WO2002066098A1 - Plastic tube processing method and device - Google Patents

Plastic tube processing method and device Download PDF

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Publication number
WO2002066098A1
WO2002066098A1 PCT/JP2002/001174 JP0201174W WO02066098A1 WO 2002066098 A1 WO2002066098 A1 WO 2002066098A1 JP 0201174 W JP0201174 W JP 0201174W WO 02066098 A1 WO02066098 A1 WO 02066098A1
Authority
WO
WIPO (PCT)
Prior art keywords
plastic tube
plastic
pair
clamp
cut
Prior art date
Application number
PCT/JP2002/001174
Other languages
French (fr)
Japanese (ja)
Inventor
Takashi Arai
Kazuhide Nomura
Original Assignee
Shimizu Medical Care Co., Ltd.
Priority date (The priority date is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the date listed.)
Filing date
Publication date
Application filed by Shimizu Medical Care Co., Ltd. filed Critical Shimizu Medical Care Co., Ltd.
Publication of WO2002066098A1 publication Critical patent/WO2002066098A1/en

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Classifications

    • BPERFORMING OPERATIONS; TRANSPORTING
    • B29WORKING OF PLASTICS; WORKING OF SUBSTANCES IN A PLASTIC STATE IN GENERAL
    • B29CSHAPING OR JOINING OF PLASTICS; SHAPING OF MATERIAL IN A PLASTIC STATE, NOT OTHERWISE PROVIDED FOR; AFTER-TREATMENT OF THE SHAPED PRODUCTS, e.g. REPAIRING
    • B29C65/00Joining or sealing of preformed parts, e.g. welding of plastics materials; Apparatus therefor
    • B29C65/02Joining or sealing of preformed parts, e.g. welding of plastics materials; Apparatus therefor by heating, with or without pressure
    • B29C65/18Joining or sealing of preformed parts, e.g. welding of plastics materials; Apparatus therefor by heating, with or without pressure using heated tools
    • B29C65/20Joining or sealing of preformed parts, e.g. welding of plastics materials; Apparatus therefor by heating, with or without pressure using heated tools with direct contact, e.g. using "mirror"
    • B29C65/2046Joining or sealing of preformed parts, e.g. welding of plastics materials; Apparatus therefor by heating, with or without pressure using heated tools with direct contact, e.g. using "mirror" using a welding mirror which also cuts the parts to be joined, e.g. for sterile welding
    • AHUMAN NECESSITIES
    • A61MEDICAL OR VETERINARY SCIENCE; HYGIENE
    • A61MDEVICES FOR INTRODUCING MEDIA INTO, OR ONTO, THE BODY; DEVICES FOR TRANSDUCING BODY MEDIA OR FOR TAKING MEDIA FROM THE BODY; DEVICES FOR PRODUCING OR ENDING SLEEP OR STUPOR
    • A61M39/00Tubes, tube connectors, tube couplings, valves, access sites or the like, specially adapted for medical use
    • A61M39/10Tube connectors; Tube couplings
    • A61M39/14Tube connectors; Tube couplings for connecting tubes having sealed ends
    • A61M39/146Tube connectors; Tube couplings for connecting tubes having sealed ends by cutting and welding
    • BPERFORMING OPERATIONS; TRANSPORTING
    • B29WORKING OF PLASTICS; WORKING OF SUBSTANCES IN A PLASTIC STATE IN GENERAL
    • B29CSHAPING OR JOINING OF PLASTICS; SHAPING OF MATERIAL IN A PLASTIC STATE, NOT OTHERWISE PROVIDED FOR; AFTER-TREATMENT OF THE SHAPED PRODUCTS, e.g. REPAIRING
    • B29C65/00Joining or sealing of preformed parts, e.g. welding of plastics materials; Apparatus therefor
    • B29C65/02Joining or sealing of preformed parts, e.g. welding of plastics materials; Apparatus therefor by heating, with or without pressure
    • B29C65/14Joining or sealing of preformed parts, e.g. welding of plastics materials; Apparatus therefor by heating, with or without pressure using wave energy, i.e. electromagnetic radiation, or particle radiation
    • B29C65/1403Joining or sealing of preformed parts, e.g. welding of plastics materials; Apparatus therefor by heating, with or without pressure using wave energy, i.e. electromagnetic radiation, or particle radiation characterised by the type of electromagnetic or particle radiation
    • B29C65/1412Infrared [IR] radiation
    • BPERFORMING OPERATIONS; TRANSPORTING
    • B29WORKING OF PLASTICS; WORKING OF SUBSTANCES IN A PLASTIC STATE IN GENERAL
    • B29CSHAPING OR JOINING OF PLASTICS; SHAPING OF MATERIAL IN A PLASTIC STATE, NOT OTHERWISE PROVIDED FOR; AFTER-TREATMENT OF THE SHAPED PRODUCTS, e.g. REPAIRING
    • B29C65/00Joining or sealing of preformed parts, e.g. welding of plastics materials; Apparatus therefor
    • B29C65/02Joining or sealing of preformed parts, e.g. welding of plastics materials; Apparatus therefor by heating, with or without pressure
    • B29C65/14Joining or sealing of preformed parts, e.g. welding of plastics materials; Apparatus therefor by heating, with or without pressure using wave energy, i.e. electromagnetic radiation, or particle radiation
    • B29C65/1429Joining or sealing of preformed parts, e.g. welding of plastics materials; Apparatus therefor by heating, with or without pressure using wave energy, i.e. electromagnetic radiation, or particle radiation characterised by the way of heating the interface
    • B29C65/1432Joining or sealing of preformed parts, e.g. welding of plastics materials; Apparatus therefor by heating, with or without pressure using wave energy, i.e. electromagnetic radiation, or particle radiation characterised by the way of heating the interface direct heating of the surfaces to be joined
    • BPERFORMING OPERATIONS; TRANSPORTING
    • B29WORKING OF PLASTICS; WORKING OF SUBSTANCES IN A PLASTIC STATE IN GENERAL
    • B29CSHAPING OR JOINING OF PLASTICS; SHAPING OF MATERIAL IN A PLASTIC STATE, NOT OTHERWISE PROVIDED FOR; AFTER-TREATMENT OF THE SHAPED PRODUCTS, e.g. REPAIRING
    • B29C65/00Joining or sealing of preformed parts, e.g. welding of plastics materials; Apparatus therefor
    • B29C65/02Joining or sealing of preformed parts, e.g. welding of plastics materials; Apparatus therefor by heating, with or without pressure
    • B29C65/18Joining or sealing of preformed parts, e.g. welding of plastics materials; Apparatus therefor by heating, with or without pressure using heated tools
    • B29C65/20Joining or sealing of preformed parts, e.g. welding of plastics materials; Apparatus therefor by heating, with or without pressure using heated tools with direct contact, e.g. using "mirror"
    • B29C65/2007Joining or sealing of preformed parts, e.g. welding of plastics materials; Apparatus therefor by heating, with or without pressure using heated tools with direct contact, e.g. using "mirror" characterised by the type of welding mirror
    • B29C65/2038Joining or sealing of preformed parts, e.g. welding of plastics materials; Apparatus therefor by heating, with or without pressure using heated tools with direct contact, e.g. using "mirror" characterised by the type of welding mirror being a wire
    • BPERFORMING OPERATIONS; TRANSPORTING
    • B29WORKING OF PLASTICS; WORKING OF SUBSTANCES IN A PLASTIC STATE IN GENERAL
    • B29CSHAPING OR JOINING OF PLASTICS; SHAPING OF MATERIAL IN A PLASTIC STATE, NOT OTHERWISE PROVIDED FOR; AFTER-TREATMENT OF THE SHAPED PRODUCTS, e.g. REPAIRING
    • B29C65/00Joining or sealing of preformed parts, e.g. welding of plastics materials; Apparatus therefor
    • B29C65/74Joining or sealing of preformed parts, e.g. welding of plastics materials; Apparatus therefor by welding and severing, or by joining and severing, the severing being performed in the area to be joined, next to the area to be joined, in the joint area or next to the joint area
    • B29C65/745Joining or sealing of preformed parts, e.g. welding of plastics materials; Apparatus therefor by welding and severing, or by joining and severing, the severing being performed in the area to be joined, next to the area to be joined, in the joint area or next to the joint area using a single unit having both a severing tool and a welding tool
    • B29C65/7451Joining or sealing of preformed parts, e.g. welding of plastics materials; Apparatus therefor by welding and severing, or by joining and severing, the severing being performed in the area to be joined, next to the area to be joined, in the joint area or next to the joint area using a single unit having both a severing tool and a welding tool the severing tool and the welding tool being movable with respect to one-another
    • BPERFORMING OPERATIONS; TRANSPORTING
    • B29WORKING OF PLASTICS; WORKING OF SUBSTANCES IN A PLASTIC STATE IN GENERAL
    • B29CSHAPING OR JOINING OF PLASTICS; SHAPING OF MATERIAL IN A PLASTIC STATE, NOT OTHERWISE PROVIDED FOR; AFTER-TREATMENT OF THE SHAPED PRODUCTS, e.g. REPAIRING
    • B29C65/00Joining or sealing of preformed parts, e.g. welding of plastics materials; Apparatus therefor
    • B29C65/78Means for handling the parts to be joined, e.g. for making containers or hollow articles, e.g. means for handling sheets, plates, web-like materials, tubular articles, hollow articles or elements to be joined therewith; Means for discharging the joined articles from the joining apparatus
    • B29C65/7802Positioning the parts to be joined, e.g. aligning, indexing or centring
    • BPERFORMING OPERATIONS; TRANSPORTING
    • B29WORKING OF PLASTICS; WORKING OF SUBSTANCES IN A PLASTIC STATE IN GENERAL
    • B29CSHAPING OR JOINING OF PLASTICS; SHAPING OF MATERIAL IN A PLASTIC STATE, NOT OTHERWISE PROVIDED FOR; AFTER-TREATMENT OF THE SHAPED PRODUCTS, e.g. REPAIRING
    • B29C65/00Joining or sealing of preformed parts, e.g. welding of plastics materials; Apparatus therefor
    • B29C65/78Means for handling the parts to be joined, e.g. for making containers or hollow articles, e.g. means for handling sheets, plates, web-like materials, tubular articles, hollow articles or elements to be joined therewith; Means for discharging the joined articles from the joining apparatus
    • B29C65/7841Holding or clamping means for handling purposes
    • BPERFORMING OPERATIONS; TRANSPORTING
    • B29WORKING OF PLASTICS; WORKING OF SUBSTANCES IN A PLASTIC STATE IN GENERAL
    • B29CSHAPING OR JOINING OF PLASTICS; SHAPING OF MATERIAL IN A PLASTIC STATE, NOT OTHERWISE PROVIDED FOR; AFTER-TREATMENT OF THE SHAPED PRODUCTS, e.g. REPAIRING
    • B29C66/00General aspects of processes or apparatus for joining preformed parts
    • B29C66/001Joining in special atmospheres
    • B29C66/0012Joining in special atmospheres characterised by the type of environment
    • B29C66/0018Joining in special atmospheres characterised by the type of environment being sterile
    • BPERFORMING OPERATIONS; TRANSPORTING
    • B29WORKING OF PLASTICS; WORKING OF SUBSTANCES IN A PLASTIC STATE IN GENERAL
    • B29CSHAPING OR JOINING OF PLASTICS; SHAPING OF MATERIAL IN A PLASTIC STATE, NOT OTHERWISE PROVIDED FOR; AFTER-TREATMENT OF THE SHAPED PRODUCTS, e.g. REPAIRING
    • B29C66/00General aspects of processes or apparatus for joining preformed parts
    • B29C66/01General aspects dealing with the joint area or with the area to be joined
    • B29C66/05Particular design of joint configurations
    • B29C66/10Particular design of joint configurations particular design of the joint cross-sections
    • B29C66/11Joint cross-sections comprising a single joint-segment, i.e. one of the parts to be joined comprising a single joint-segment in the joint cross-section
    • B29C66/114Single butt joints
    • B29C66/1142Single butt to butt joints
    • BPERFORMING OPERATIONS; TRANSPORTING
    • B29WORKING OF PLASTICS; WORKING OF SUBSTANCES IN A PLASTIC STATE IN GENERAL
    • B29CSHAPING OR JOINING OF PLASTICS; SHAPING OF MATERIAL IN A PLASTIC STATE, NOT OTHERWISE PROVIDED FOR; AFTER-TREATMENT OF THE SHAPED PRODUCTS, e.g. REPAIRING
    • B29C66/00General aspects of processes or apparatus for joining preformed parts
    • B29C66/50General aspects of joining tubular articles; General aspects of joining long products, i.e. bars or profiled elements; General aspects of joining single elements to tubular articles, hollow articles or bars; General aspects of joining several hollow-preforms to form hollow or tubular articles
    • B29C66/51Joining tubular articles, profiled elements or bars; Joining single elements to tubular articles, hollow articles or bars; Joining several hollow-preforms to form hollow or tubular articles
    • B29C66/52Joining tubular articles, bars or profiled elements
    • B29C66/522Joining tubular articles
    • B29C66/5221Joining tubular articles for forming coaxial connections, i.e. the tubular articles to be joined forming a zero angle relative to each other
    • BPERFORMING OPERATIONS; TRANSPORTING
    • B29WORKING OF PLASTICS; WORKING OF SUBSTANCES IN A PLASTIC STATE IN GENERAL
    • B29CSHAPING OR JOINING OF PLASTICS; SHAPING OF MATERIAL IN A PLASTIC STATE, NOT OTHERWISE PROVIDED FOR; AFTER-TREATMENT OF THE SHAPED PRODUCTS, e.g. REPAIRING
    • B29C66/00General aspects of processes or apparatus for joining preformed parts
    • B29C66/50General aspects of joining tubular articles; General aspects of joining long products, i.e. bars or profiled elements; General aspects of joining single elements to tubular articles, hollow articles or bars; General aspects of joining several hollow-preforms to form hollow or tubular articles
    • B29C66/51Joining tubular articles, profiled elements or bars; Joining single elements to tubular articles, hollow articles or bars; Joining several hollow-preforms to form hollow or tubular articles
    • B29C66/52Joining tubular articles, bars or profiled elements
    • B29C66/522Joining tubular articles
    • B29C66/5229Joining tubular articles involving the use of a socket
    • BPERFORMING OPERATIONS; TRANSPORTING
    • B29WORKING OF PLASTICS; WORKING OF SUBSTANCES IN A PLASTIC STATE IN GENERAL
    • B29CSHAPING OR JOINING OF PLASTICS; SHAPING OF MATERIAL IN A PLASTIC STATE, NOT OTHERWISE PROVIDED FOR; AFTER-TREATMENT OF THE SHAPED PRODUCTS, e.g. REPAIRING
    • B29C66/00General aspects of processes or apparatus for joining preformed parts
    • B29C66/80General aspects of machine operations or constructions and parts thereof
    • B29C66/81General aspects of the pressing elements, i.e. the elements applying pressure on the parts to be joined in the area to be joined, e.g. the welding jaws or clamps
    • B29C66/814General aspects of the pressing elements, i.e. the elements applying pressure on the parts to be joined in the area to be joined, e.g. the welding jaws or clamps characterised by the design of the pressing elements, e.g. of the welding jaws or clamps
    • B29C66/8141General aspects of the pressing elements, i.e. the elements applying pressure on the parts to be joined in the area to be joined, e.g. the welding jaws or clamps characterised by the design of the pressing elements, e.g. of the welding jaws or clamps characterised by the surface geometry of the part of the pressing elements, e.g. welding jaws or clamps, coming into contact with the parts to be joined
    • B29C66/81427General aspects of the pressing elements, i.e. the elements applying pressure on the parts to be joined in the area to be joined, e.g. the welding jaws or clamps characterised by the design of the pressing elements, e.g. of the welding jaws or clamps characterised by the surface geometry of the part of the pressing elements, e.g. welding jaws or clamps, coming into contact with the parts to be joined comprising a single ridge, e.g. for making a weakening line; comprising a single tooth
    • BPERFORMING OPERATIONS; TRANSPORTING
    • B29WORKING OF PLASTICS; WORKING OF SUBSTANCES IN A PLASTIC STATE IN GENERAL
    • B29CSHAPING OR JOINING OF PLASTICS; SHAPING OF MATERIAL IN A PLASTIC STATE, NOT OTHERWISE PROVIDED FOR; AFTER-TREATMENT OF THE SHAPED PRODUCTS, e.g. REPAIRING
    • B29C66/00General aspects of processes or apparatus for joining preformed parts
    • B29C66/80General aspects of machine operations or constructions and parts thereof
    • B29C66/81General aspects of the pressing elements, i.e. the elements applying pressure on the parts to be joined in the area to be joined, e.g. the welding jaws or clamps
    • B29C66/814General aspects of the pressing elements, i.e. the elements applying pressure on the parts to be joined in the area to be joined, e.g. the welding jaws or clamps characterised by the design of the pressing elements, e.g. of the welding jaws or clamps
    • B29C66/8141General aspects of the pressing elements, i.e. the elements applying pressure on the parts to be joined in the area to be joined, e.g. the welding jaws or clamps characterised by the design of the pressing elements, e.g. of the welding jaws or clamps characterised by the surface geometry of the part of the pressing elements, e.g. welding jaws or clamps, coming into contact with the parts to be joined
    • B29C66/81431General aspects of the pressing elements, i.e. the elements applying pressure on the parts to be joined in the area to be joined, e.g. the welding jaws or clamps characterised by the design of the pressing elements, e.g. of the welding jaws or clamps characterised by the surface geometry of the part of the pressing elements, e.g. welding jaws or clamps, coming into contact with the parts to be joined comprising a single cavity, e.g. a groove
    • BPERFORMING OPERATIONS; TRANSPORTING
    • B29WORKING OF PLASTICS; WORKING OF SUBSTANCES IN A PLASTIC STATE IN GENERAL
    • B29CSHAPING OR JOINING OF PLASTICS; SHAPING OF MATERIAL IN A PLASTIC STATE, NOT OTHERWISE PROVIDED FOR; AFTER-TREATMENT OF THE SHAPED PRODUCTS, e.g. REPAIRING
    • B29C66/00General aspects of processes or apparatus for joining preformed parts
    • B29C66/80General aspects of machine operations or constructions and parts thereof
    • B29C66/84Specific machine types or machines suitable for specific applications
    • B29C66/857Medical tube welding machines
    • AHUMAN NECESSITIES
    • A61MEDICAL OR VETERINARY SCIENCE; HYGIENE
    • A61MDEVICES FOR INTRODUCING MEDIA INTO, OR ONTO, THE BODY; DEVICES FOR TRANSDUCING BODY MEDIA OR FOR TAKING MEDIA FROM THE BODY; DEVICES FOR PRODUCING OR ENDING SLEEP OR STUPOR
    • A61M1/00Suction or pumping devices for medical purposes; Devices for carrying-off, for treatment of, or for carrying-over, body-liquids; Drainage systems
    • A61M1/14Dialysis systems; Artificial kidneys; Blood oxygenators ; Reciprocating systems for treatment of body fluids, e.g. single needle systems for hemofiltration or pheresis
    • A61M1/28Peritoneal dialysis ; Other peritoneal treatment, e.g. oxygenation
    • BPERFORMING OPERATIONS; TRANSPORTING
    • B29WORKING OF PLASTICS; WORKING OF SUBSTANCES IN A PLASTIC STATE IN GENERAL
    • B29CSHAPING OR JOINING OF PLASTICS; SHAPING OF MATERIAL IN A PLASTIC STATE, NOT OTHERWISE PROVIDED FOR; AFTER-TREATMENT OF THE SHAPED PRODUCTS, e.g. REPAIRING
    • B29C35/00Heating, cooling or curing, e.g. crosslinking or vulcanising; Apparatus therefor
    • B29C35/02Heating or curing, e.g. crosslinking or vulcanizing during moulding, e.g. in a mould
    • B29C35/08Heating or curing, e.g. crosslinking or vulcanizing during moulding, e.g. in a mould by wave energy or particle radiation
    • B29C35/0805Heating or curing, e.g. crosslinking or vulcanizing during moulding, e.g. in a mould by wave energy or particle radiation using electromagnetic radiation
    • B29C2035/0822Heating or curing, e.g. crosslinking or vulcanizing during moulding, e.g. in a mould by wave energy or particle radiation using electromagnetic radiation using IR radiation
    • BPERFORMING OPERATIONS; TRANSPORTING
    • B29WORKING OF PLASTICS; WORKING OF SUBSTANCES IN A PLASTIC STATE IN GENERAL
    • B29CSHAPING OR JOINING OF PLASTICS; SHAPING OF MATERIAL IN A PLASTIC STATE, NOT OTHERWISE PROVIDED FOR; AFTER-TREATMENT OF THE SHAPED PRODUCTS, e.g. REPAIRING
    • B29C66/00General aspects of processes or apparatus for joining preformed parts
    • B29C66/80General aspects of machine operations or constructions and parts thereof
    • B29C66/81General aspects of the pressing elements, i.e. the elements applying pressure on the parts to be joined in the area to be joined, e.g. the welding jaws or clamps
    • B29C66/814General aspects of the pressing elements, i.e. the elements applying pressure on the parts to be joined in the area to be joined, e.g. the welding jaws or clamps characterised by the design of the pressing elements, e.g. of the welding jaws or clamps
    • B29C66/8141General aspects of the pressing elements, i.e. the elements applying pressure on the parts to be joined in the area to be joined, e.g. the welding jaws or clamps characterised by the design of the pressing elements, e.g. of the welding jaws or clamps characterised by the surface geometry of the part of the pressing elements, e.g. welding jaws or clamps, coming into contact with the parts to be joined
    • B29C66/81411General aspects of the pressing elements, i.e. the elements applying pressure on the parts to be joined in the area to be joined, e.g. the welding jaws or clamps characterised by the design of the pressing elements, e.g. of the welding jaws or clamps characterised by the surface geometry of the part of the pressing elements, e.g. welding jaws or clamps, coming into contact with the parts to be joined characterised by its cross-section, e.g. transversal or longitudinal, being non-flat
    • B29C66/81421General aspects of the pressing elements, i.e. the elements applying pressure on the parts to be joined in the area to be joined, e.g. the welding jaws or clamps characterised by the design of the pressing elements, e.g. of the welding jaws or clamps characterised by the surface geometry of the part of the pressing elements, e.g. welding jaws or clamps, coming into contact with the parts to be joined characterised by its cross-section, e.g. transversal or longitudinal, being non-flat being convex or concave
    • B29C66/81423General aspects of the pressing elements, i.e. the elements applying pressure on the parts to be joined in the area to be joined, e.g. the welding jaws or clamps characterised by the design of the pressing elements, e.g. of the welding jaws or clamps characterised by the surface geometry of the part of the pressing elements, e.g. welding jaws or clamps, coming into contact with the parts to be joined characterised by its cross-section, e.g. transversal or longitudinal, being non-flat being convex or concave being concave

Definitions

  • the present invention relates to a processing method and apparatus for sealing or connecting a plastic tube, and in a peritoneal dialysis, a plastic tube (transformation tube) between a patient's peritoneal cavity and a dialysate back. It is particularly suitable for the patient to perform the disconnection and connection of aseptic method under aseptic condition by himself.
  • one end of a plastic tube (a catheter) is embedded in the patient's peritoneal cavity, and the other end of the plastic tube is connected to a dialysate pack.
  • the first step is to cut the plastic tube and seal the cut end prior to replacement as the first step
  • the second step is to make the plastic tube from the patient's abdominal cavity.
  • the sealed end of the plastic tube is connected to the sealed end of the plastic tube from the new dialysate pack.
  • Various systems have been proposed for automating the plastic tube sealing and connection work so that patients can perform their own work.
  • the cut end of the plastic tube is heated and melted by the length introduced into the recess, and finally, the plastic tube is cooled by the low temperature clamp coming into contact with the wafer, and the plastic tube is sealed.
  • a toe is formed.
  • the method disclosed in Japanese Patent Application Laid-Open No. 6-1979757 is a thin copper plate that is heated by an electric heater when forming the sealed end of a plastic tube.
  • the plastic tube is melted by introducing the cut end of the plastic tube, and the plastic tube is connected (welded) by moving the heated aluminum wafer to wipe the plastic tube. Removal of plastic sealing end and melting of plastic tube end face. For this reason, the melt easily adheres to the ewa at a temperature of at most 300 ° C, and from the viewpoint of preventing infection by various bacteria, the eha is disposable each time, which is one of the causes of the increase in dialysis cost. .
  • Japanese Patent Application Laid-Open No. H10-165498 discloses a technique employing a rotary clamp and a sealing auxiliary tube. That is, in the technology disclosed in Japanese Patent Application Laid-Open No. H10-165498, a pair of rotating clamps are arranged apart from each other, and a plastic tube and a sealing aid from the abdominal cavity are placed on one rotating clamp.
  • the present invention has been made in view of the above-mentioned problems of the prior art, and has as its object to realize aseptic disconnection and connection of a plastic tube at low cost. Disclosure of the invention
  • the plastic tube is processed to be cut.
  • a linear heating element intersects the plastic tube between a pair of clamps while clamping flatly between a pair of parts separated in the same direction to tension the plastic tube in the longitudinal direction.
  • a method for sealing a cut end portion of a plastic tube wherein the plastic tube is clamped in a flat shape close to the cut end portion and close to the clamp portion. Open the plastic tube end face, and heat at least the inner peripheral surface of the plastic tube facing the open end until it reaches a molten state in a non-contact manner, and crush the plastic tube end from the outer peripheral side. Thereby, the opposed inner peripheral surfaces are welded to each other, thereby providing a method of sealing the cut end of the plastic tube.
  • the plastic tubes are clamped so as to be opened, and at least the opposite open end faces of the pair of plastic tubes are heated in a non-contact manner to a molten state, and the respective plastic tubes approach each other while regulating the outer circumference thereof.
  • a method of contacting and welding opposing open end faces by moving in opposite directions is provided.
  • a method for treating a plastic tube so as to cut the plastic tube wherein the tensioned plastic tube is clamped in a flat shape between a pair of portions spaced apart in a longitudinal direction, and a pair of clamps are formed.
  • a method for melting and cutting a plastic tube is provided by moving a linear heating element and a plastic tube relatively in a direction intersecting with each other. Melt cutting of the plastic tube is performed by relatively moving a linear heating element such as a nickel wire or a platinum wire and the plastic tube in the cross direction.
  • Hei 10 — 169 498 a two-chrome wire or a platinum wire is used. Cutting the plastic tube by the relative movement of such a high-temperature linear heating element in the cross direction does not cause any germs due to the high temperature of the heating element, and is extremely reduced by appropriately reducing the wire diameter. Good sharpness can be obtained. Good sharpness means that there is almost no adherence of the molten material, and it is possible to use nickel wire and platinum wire repeatedly for almost the entire endurance period. The running cost can be greatly reduced. In addition, higher power consumption efficiency can be obtained compared to the indirect heating by a wafer as a metal flake in the conventional technology, and a cost reduction from the viewpoint of energy efficiency can be realized. be able to.
  • a method for sealing a cut end of a plastic tube wherein the plastic tube is clamped in a flat shape close to the cut end and close to the clamp.
  • the opened end of the plastic tube is opened, and at least the inner peripheral surface of the plastic tube facing the open end is heated in a non-contact manner until it reaches a molten state, and the end of the plastic tube is crushed from the outer peripheral side.
  • the opposing inner peripheral surfaces are welded to each other, thereby providing a method for sealing the cut end of the plastic tube.
  • At least the inner peripheral surface of the cut end surface of the plastic tube is heated in a non-contact manner from the outside, and then the inner peripheral surface is welded by crushing the end of the plastic tube from the outside, so that the plastic tube is welded.
  • the cut end of the bush is sealed. Because of non-contact heating, it goes to the recess formed in the wafer as in the conventional Japanese Patent Application Laid-Open No. 6-199757. Eliminating the need for disposable e-wafers compared to sealing by the introduction of e-tubes, reducing running costs and elaborate clamps for introducing plastic tube ends into e-recess recesses A simple operation mechanism is not required, and only a simple operation is performed, and the cost of the automation device is reduced. In addition, since an auxiliary tube for sealing with a rotating clamp as disclosed in Japanese Patent Application Laid-Open No. H10-165498 is not required, the cost can be reduced in this respect as well.
  • a method for connecting the cut end surfaces of a pair of plastic tubes so as to connect the cut end surfaces to each other At least the open end faces of the pair of plastic tubes are heated in a non-contact manner to a molten state, and the heated open end faces of the pair of plastic tubes are opposed to each other.
  • a method for abutting and welding the opposed open end faces By moving the respective plastic tubes in a direction of approaching each other while regulating their outer circumferences, a method is provided for abutting and welding the opposed open end faces.
  • At least the open ends of the pair of plastic tubes are heated in a non-contact manner, and then the pair of plastic tubes are moved in a direction approaching each other while regulating the outer periphery, and the heated open ends are heated. Are abutted and welded, thereby connecting the plastic tube.
  • Non-contact heating of a pair of plastic tubes eliminates the use of disposable parts like conventional wafers, thus reducing running costs.
  • the outer circumference of the plastic tube during welding is regulated, a smooth connection without or with less pallets can be realized.
  • the plastic tube is cooled early by contact with the outer circumference regulating means, the welding time is reduced and the cycle time can be shortened.
  • a method for treating an end portion of a plastic tube so as to seal the end portion wherein the plastic tube is tensioned in a longitudinal direction thereof and flattened from outside at a pair of portions separated in the same direction.
  • the plastic tube is cut in a molten state by the relative movement of the linear heating element and the plastic tube in a crossing direction between the pair of clamp portions, and the plastic tube facing the cut end is cut.
  • the inner peripheral portion is heated in a non-contact manner, and this plastic tube is crushed from the outside so that the heated inner peripheral portions are fused to each other, thereby sealing the end of the plastic tube.
  • the plastic tube is cut by the relative movement in the cross direction with the linear heating element, and then the inner circumference of the plastic tube, which is exposed from the cut end, is contactlessly heated and crushed from the outside.
  • the inner peripheral surface of the plastic tube is welded to seal the end of the plastic tube, and the sealed end of the plastic tube can be used without using disposable parts like a conventional wafer. It is possible to form a portion, and it is possible to reduce costs.
  • a method for treating an end portion of a plastic tube having a liquid therein so as to seal the end portion of the plastic tube The liquid between the clamp portions is transferred to the plastic tube portion outside the clamp portion while flattening the clamp from the outside, and the direction in which the linear heating element and the plastic tube intersect between the pair of clamp portions.
  • the plastic tube is cut in a molten state by the relative movement of the plastic tube, and at least the inner peripheral part of the plastic tube facing the cut end is heated without contact, and this plastic tube is crushed from the outside.
  • the heated inner peripheral portions are fused to each other, whereby the end of the plastic tube having the liquid inside is heated. Provided a way to seal It is.
  • the pair of plastic tubes are flatly clamped at a portion close to each of the sealed ends.
  • the plastic tube is held so as to be tensioned in the axial direction on the sealing end side of the clamp, and the linear heating element and the plastic tube are relatively moved in the cross direction to cut the plastic tube.
  • a portion of the plastic tube on the sealing end side from the clamp portion is cut off and the sealing end of the plastic tube is opened, so that at least the opening end face of the pair of plastic tubes is opened. Heated in a non-contact manner so that the heated open end faces of the pair of plastic tubes face each other in the axial direction.
  • the pair of plastic tubes is moved in a direction approaching each other in the axial direction thereof while regulating the outer circumference thereof, and the heated open end faces of the pair of plastic tubes are brought into contact with each other to open.
  • a method is provided for fusing the end faces together.
  • connection of a pair of plastic tubes whose ends are sealed opens the end of the plastic tube by removing the sealed end by moving the linear heating element in the cross direction, and at least this opening
  • the ends are heated in a non-contact manner, and then a pair of plastic tubes are moved in the opposite direction until the opening ends contact and weld.
  • contact-type heating the conventional technology Since disposable parts are not required, and the outer periphery is regulated by a molding tool or the like during welding, a clean connection state with or without pallets can be realized.
  • the respective plastic tubes are flattened at a portion adjacent to the sealed end. While the fluid is being clamped to the clamp, the fluid is transferred from the sealed end to the side away from the sealed end, and the plastic tube is axially stretched at the sealed end from the clamp.
  • the plastic tube is cut off by moving the linear heating element and the plastic tube relatively in the cross direction to cut the plastic tube. At the same time, the sealed end of the plastic tube is opened, and at least the open end surfaces of the pair of plastic tubes are heated in a non-contact manner.
  • the plastic tubes With the pair of plastic tubes facing each other in the axial direction, the plastic tubes are moved in a direction approaching each other while regulating the outer periphery of the plastic tubes.
  • the heated open end faces of the pair of plastic tubes A method of fusing the open end faces to each other by abutting them is provided.
  • an apparatus for processing to cut a plastic tube wherein the linear heating element and the pair of parts separated in the same direction while tensioning the plastic tube in the longitudinal direction are flattened.
  • An apparatus which comprises a clamp means for pumping and melts and cuts the plastic tube by moving the linear heating element and the plastic tube in the cross direction close to the clamp means. .
  • the present invention provides an apparatus for melting and cutting a plastic tube by relatively moving the linear heating element and the plastic tube in a cross direction.
  • the transfer means acts to move and remove the liquid between the clamps away from the sealing end. As a result, no liquid remains in the cut portion, no leakage or evaporation due to heat occurs when the plastic tube is cut by the linear heating element, and a hygienic environment can be maintained for a long time. it can.
  • the periphery of the welded part can be surrounded by a heat-shrinkable plastic film, which reinforces the welded part and makes the connection of the plastic tube more complete. It can be
  • a device for sealing a cut end of a plastic tube wherein the plastic tube is flattened close to the open end of the plastic tube with the cut end opened.
  • the plastic tube is clamped so that the end is open, the inner surface is heated in a non-contact manner from the open end, and the plastic tube is flattened so that the heated inner peripheral surface is in close contact.
  • Plastic tube The cut end can be sealed.
  • Clamping means for clamping so as to open heating means for heating at least the open end faces of the pair of plastic tubes until they reach a molten state, and regulation for regulating the outer circumference of the plastic tube
  • the plastic tubes are opposed to each other by moving the plastic tubes in a direction approaching each other while restricting the outer circumference with the heated open end faces of the plastic tubes facing the axial direction.
  • An apparatus is provided for abutting and welding the opened end faces to each other.
  • the plastic tube is clamped close to the sealing end, and at least the open end of the plastic tube is heated in a non-contact manner close to the clamp to regulate the outer circumference of the plastic tube while controlling the outer circumference of the plastic tube.
  • the plastic tube can be connected by moving the end in the approaching direction so that the molten open end is abutted and welded.
  • an apparatus for treating an end of a plastic tube so as to seal the end of the plastic tube wherein the tensioned plastic tube is closed from the outside so as to be flat at a pair of portions separated in the longitudinal direction.
  • the clamp means to be ramped, the linear heating element, and a portion of the linear heating element and the plastic tube between the pair of clamp sections which are moved closer to the respective clamp means by moving in a direction crossing relative to the linear heating element and the plastic tube.
  • the inner peripheral portions of the heated portions are fused to each other, whereby the brass extending to the liquid storage portion is formed.
  • a sealing means for sealing the end of the stick tube.
  • Clamping means clamps the tensioned plastic tube from the outside so that it becomes flat at a pair of parts spaced apart in the longitudinal direction, and cutting means relatively moves the linear heating element with the plastic tube.
  • cutting means By moving the plastic tube in the cross direction, the plastic tube is cut, and the heating means heats at least the inner peripheral surface of the plastic tube, which faces the cut end, in a non-contact manner.
  • the non-contact heated plastic tube is crushed from the outside to weld the opposed inner peripheral surfaces, thereby sealing the end of the plastic tube.
  • a plastic tube having a liquid therein is treated to seal an end of the plastic tube, and the plastic tube is tensioned in a longitudinal direction and separated in the same direction.
  • a device for processing to connect a pair of plastic tubes, each of which is sealed at one end means for flatly clamping the pair of plastic tubes at a portion close to the sealed end portion And a plastic tube extending from the clamp A holding means for holding the sealed end portion of the sealing member so as to be tensioned in the axial direction; a linear heating element; and a plastic tube and the linear heating element which are relatively moved in a crossing direction.
  • Cutting means for cutting the plastic tube in a molten state at a position close to the clamp portion of the plastic tube, heating means for heating at least the open ends of the pair of plastic tubes in a non-contact manner, and a pair of plastic tubes
  • Outer peripheral regulating means for regulating the outer periphery of the pair of plastic tubes, and in a state where the heated opposite ends of the pair of plastic tubes are axially opposed to each other, the outer peripheral regulating means regulates the outer periphery to move the pair of plastic tubes in the axial direction.
  • a connecting hand that welds the open ends of the plastic tubes by moving them in a direction closer to each other. And this provided with the winding devices.
  • the clamping means flatly clamps the pair of plastic tubes so that their sealing ends face each other in the axial direction and at a position close to the sealing end, and the holding means clamps the pair of plastic tubes.
  • the sealing end of the plastic tube extending from the section is held so as to be tensioned in the axial direction, and the cutting means moves the plastic tube and the linear heating element relatively in the cross direction.
  • the plastic tube is cut in a molten state at a position close to each clamp part, and the heating means heats at least the open ends of the pair of plastic tubes in a non-contact manner, thereby controlling the outer periphery.
  • the connecting means connects the pair of plastic tubes whose outer circumference is regulated by the outer circumference regulating means in the axial direction Ru can and this performing the heated open mouth end each other by Ri plastic Kuchubu to and this for moving in a direction coming close to each other welded connections.
  • an apparatus for processing a pair of plastic tubes each of which is sealed at one end and has a fluid therein Means for flatly clamping a pair of plastic tubes at a portion close to the sealing end, means for transferring liquid from the sealing end to the clamping part to a side away from the sealing end, The holding means for holding the sealing end of the plastic tube extending from the clamp portion so as to be tensioned in the axial direction, intersecting the linear heating element, and the plastic tube and the linear heating element Cutting means for cutting the plastic tube in a molten state at a position close to each clamp portion by moving the plastic tube in a relative direction, and at least an opening end of a pair of plastic tubes.
  • Heating means for heating in a non-contact manner outer circumference regulating means for regulating the outer circumference of the pair of plastic tubes; Connecting means for welding the plastic tube open ends to each other by moving the plastic tube in the direction of axial proximity to each other in the outer circumference regulating means.
  • the transfer means acts to transfer and remove the liquid to the clamp portion away from the sealed end. For this reason, no liquid remains in the cut portion, and when the plastic tube is cut by the linear heating element, there is no evaporation due to the leakage heat, and a sanitary environment is maintained for a long time. Can be done.
  • means for surrounding the welded portion of the plastic tube with a heat-shrinkable plastic film may be provided. This reinforces the connection and achieves a more secure connection of the plastic tube.
  • an apparatus for performing processing such as cutting, sealing and welding connection of a plastic tube.
  • a pair of spaced clamp means for flattening the clamp, and a plastic tube extending from each clamp means is held between the clamp means so as to be stretched in the longitudinal direction.
  • a heating means for heating the inner periphery and the end face of the plastic tube in a non-contact manner.
  • the pair of clamping means is flattened from the outside at a pair of spaced apart portions in the longitudinal direction of the plastic tube.
  • the clamp is cut and the cutting means moves the linear heating element in the cross direction, thereby cutting the plastic tube in a molten state between the pair of clamps in close proximity to each clamp and heating.
  • the means heats the outer circumference and the end face of the plastic tube facing from each cut end in a non-contact manner, and crushes the plastic tube from the outside by the holding means.
  • the clamp means when connecting the sealed end of the plastic tube from the patient to the sealed end of the plastic tube from the dialysate bag at the start of peritoneal dialysis, the clamp means is connected to the axis of the sealed end.
  • the plastic tube is clamped flat at the part close to the sealing end, and the holding means is made of plastic at the sealing end side of the clamp part.
  • the tube is held so as to be tensioned in the axial direction, and the cutting means is a plastic extending from the clamp by moving the linear heating element in the cross direction.
  • Non-contact heating is performed to bring the heated open end faces of the pair of plastic tubes into contact with each other, thereby fusing the open end faces.
  • This device is capable of cutting and sealing plastic tubing and welding the sealed ends independently, and automates the operation of peritoneal dialysis by the patient.
  • a linear heating element with little adhesion of the melt is used for cutting, and a non-contact type is used for heating in the sealing and connection work.
  • the running cost in peritoneal dialysis work can be reduced as compared with use.
  • the non-contact type heating device is shared between the sealing operation and the connection operation, it can contribute to lowering the cost of the device.
  • the heating means may be an infrared ray generating means for generating an infrared ray irradiated to the heated portion. Heating at a short distance by infrared rays enables energy-saving and efficient heating, and since it is contactless, it is easy to maintain a sterile condition. Also, the means for generating infrared rays can be an electric heater.
  • a regulating means for regulating the outer periphery of the plastic tube at the time of welding can be further provided.
  • the outer periphery restricting means may be a split mold which forms a cylindrical space having an inner diameter corresponding to the outer diameter of the plastic tube at the time of joining.
  • the liquid in the portion of the plastic tube held by the holding means is transferred to the portion of the plastic tube outside the clamp portion.
  • Means can be provided, The liquid is contained inside the plastic tube, but the transfer means acts to transfer and remove the liquid to the plastic club site outside the clamp. Therefore, no liquid remains in the cut portion of the plastic tube, there is no leakage or evaporation due to heat when the plastic tube is cut by the linear heating element, and a hygienic environment is maintained for a long time. Can be done.
  • the transition means can include a pair of clamp members for holding the plastic tube, and means for laterally moving the clamp member. By laterally moving the clamp member, it is possible to remove the liquid from the cut portion while also using the clamp.
  • the transfer means may include a pair of rollers for holding the plastic tube and means for rotating the rollers. Since the liquid is removed by rotating the roller, the liquid can be reliably moved and removed regardless of the position of the tube relative to the roller.
  • the transition means may include a pair of clamp members having a substantially L-shaped cross section whose bottom surface abuts the plastic tube. Due to the clamp member having the L-shaped cross section, liquid can be removed by a simple clamp operation in a wide range of the plastic tube, thereby simplifying the configuration and realizing cost reduction.
  • 1A to 1E schematically show a series of procedures in peritoneal dialysis.
  • FIG. 2 is a perspective view showing a sealing portion of the plastic tube.
  • FIG. 3 is a perspective view showing a welded portion of the plastic tube.
  • FIGS. 4A to 4H are views showing a series of steps in cutting and sealing the plastic tube.
  • FIG. 5 is a perspective view showing a schematic configuration of the clamp mechanism.
  • FIG. 6A to FIG. 6H are views showing a series of steps in the connection operation of the plastic tube.
  • FIG. 7A shows a schematic perspective view of a shaped open state.
  • FIG. 7B shows a schematic perspective view of a shaped closed state.
  • FIGS. 8A to 8D are the same as FIGS. 4A to 4D, but schematically show a modification in which the liquid is removed by ironing (lateral movement) by a clamp. .
  • FIG. 9 is a schematic side view of the clamp mechanism according to the second embodiment.
  • FIG. 10 is a schematic plan view of the clamp mechanism of FIG.
  • FIGS. 11A to 11H are views showing a series of procedures for cutting and sealing the plastic tube in the second embodiment.
  • FIGS. 12A to 12H are views showing a series of procedures in a plastic tube connecting operation in the second embodiment.
  • FIG. 13 is a schematic side view of a clamp mechanism according to the third embodiment.
  • FIG. 14 is a schematic plan view of the clamp mechanism of FIG.
  • FIGS. 15A to 15H are views showing a series of procedures for cutting and sealing the plastic tube in the third embodiment.
  • FIGS. 16A to 16H are views showing a series of procedures in a connection operation of a plastic tube in the third embodiment.
  • FIG. 17A and FIG. 17B are schematic views respectively showing a mold open state and a mold closed state in a modified embodiment in which a connection portion of a plastic tube is covered with a heat-shrinkable tube.
  • Figure 18 is a schematic cross-sectional view of the connection part of the plastic tube after the connection work is completed.
  • FIG. 1A to 1E schematically show a method of peritoneal dialysis by the method and apparatus according to the embodiment of the present invention, wherein FIG. A plastic tubing 3 extends between the dialysis fluid 2 and the dialysate from the dialysis fluid pack 2 to the peritoneal cavity of the patient 1 via the plastic tubing 3.
  • a switching means for switching from the dialysate back 2 to the drain back is also provided so that the drain pack can be drained from the abdominal cavity via the plastic tube 3.
  • the dialysis work is normally completed in about 30 minutes, and the plastic tube 3 is separated by the working device 100 shown in FIG.1B.As will be described later, first, in this separating work, Then, the plastic tube 3 is clamped at a pair of spaced-apart sites to prevent leakage from the abdominal cavity of the patient 1 and the dialysate pack 2 while performing cutting by a heating wire.
  • the inner peripheral surface of the opened cut end of the plastic tube 3 is heated in a non-contact manner by infrared rays or the like, and then the plastic tubes are crushed from the outer side to bring the opposing inner peripheral surfaces into close contact with each other. By doing so, it is sealed flat.
  • FIG. 1B.As will be described later
  • FIG. 1C shows a completed state of the dialysis work, and a plastic tube 3 whose end 5 is sealed extends from the abdominal cavity of the patient 1.
  • a new dialysis pack 2A is prepared and extends from dialysis pack 2A.
  • the operation of connecting the plastic tube 3A to the plastic tube 3 from the patient 1 is performed.
  • the working device 100 clamps the sealing ends 5, 5A of the plastic tubes 3, 3A in front of the sealing ends 5, 5A, thereby preventing liquid leakage while preventing leakage of the liquid.
  • 5A is cut off with a heating wire, the open end formed by this is heated in a non-contact manner by infrared rays, and the heated open end is positively welded by welding. Weld the tip tubes 3 and 3A.
  • the heat-welded portion between the plastic tubes 3 and 3A thus formed is shown in Fig. 1E-4 (see also Fig. 3).
  • the working device 100 basically includes a pair of clamp mechanisms 7 (see FIG. 5) and 8 arranged coaxially in the longitudinal direction of the plastic tube 3 and a pair of heating wire cutters 9. , An infrared heater 10, an auxiliary clamp mechanism 11, and a molding die 14 (see FIGS. 7A and 7B).
  • the clamp mechanisms 7 and 8 constitute the clamp means of the present invention, each of which is configured to be movable a certain distance back and forth in the coaxial direction (in the direction of arrow a in FIG. 4A).
  • the clamp mechanism 7 is provided with a pair of clamp members 7-1 and 7-2, and the clamp members -1 and 7-2 each have a vertical direction (see FIG. 5). It is configured to be movable to the arrow b) of 5.
  • the clamp members 7-1 and 7-2 have the lower end surface and the upper end surface which are the clamp surfaces. Each of them has a flat surface, and the plastic tube 3 is flattened as shown in Fig. 5 by moving the clamp members 7-1 and 7-2 in a direction approaching each other. Crushed.
  • the cut end 6 can be opened in a substantially circular shape by elastic reversion by clamping the cut end 6 somewhat (several millimeters) in front of the cut end 6.
  • the clamp of the plastic tube 3 is released by moving the clamp members 7-1 and 7-2 away from each other.
  • the clamping mechanism 8 has the same structure as the clamping mechanism 7, and the plastic tube 3 can be selectively clamped and released.
  • the auxiliary clamp mechanism 11 constitutes the holding means of the present invention, and is composed of upper and lower clamp members having a flat clamp surface similarly to the clamp mechanisms 7 and 8, and the upper and lower clamp members. It is the same as the clamp mechanisms 7 and 8 that the members are configured so as to be movable in the direction facing and away from each other. Then, during the heating operation by the infrared heater 10, a linear drive type for retracting the auxiliary clamp mechanism 11 from the coaxial position on the plastic tube axis in a direction perpendicular to the paper surface or the like. Alternatively, a lever-type evacuation mechanism is installed although not shown.
  • the heating wire cutter 9 constitutes the cutting means of the present invention, and is composed of a linear heating element such as a nickel wire, a platinum wire, a kanta wire, a tungsten wire, and a driving means therefor. can do.
  • a linear heating element such as a nickel wire, a platinum wire, a kanta wire, a tungsten wire, and a driving means therefor.
  • the heating wire When the heating wire is energized, it is much higher than the melting point (around 200 ° C) of the plastic material, such as vinyl chloride or polypropylene, that composes the plastic tube. Heated to about C.
  • the plastic tube 3 can be melt-cut by moving the heating wire cutter 9 in a direction perpendicular to the plastic tube 3 (a direction perpendicular to the paper surface). Sharp cutting can be performed with high-temperature nickel wire or platinum wire. Therefore, the adhesion of the melt is ignored for a long time. Therefore, the plastic tube can be repeatedly cut a considerable number of times.
  • a normal circular shape may be originally a rectangular shape or another deformed cross-sectional shape.
  • the infrared heater 10 (FIG. 4E) constitutes the heating means of the present invention, and in this embodiment, a heating section 12 composed of a rod-shaped electric resistance element heating element extending cantilevered in the opposite direction in the axial direction. , 12A, and the heating section 12, 12A is positioned so as to face the cut end of the plastic tube 3, and the heating section 12, 12A is energized to cause red heat.
  • a heating section 12 composed of a rod-shaped electric resistance element heating element extending cantilevered in the opposite direction in the axial direction. , 12A, and the heating section 12, 12A is positioned so as to face the cut end of the plastic tube 3, and the heating section 12, 12A is energized to cause red heat.
  • Adoption of non-contact type heating has the advantage that there is no adhesion of plastic melt that cannot be avoided when using a contact type wafer in the conventional technology.
  • a heating section composed of electric resistance wires 12 and 12A reach a high temperature exceeding 800 ° C when energized, so even if there are bacteria in the vicinity, they can be killed and the invasion of bacteria by the heating wire 9 into the opening end of the plastic tube is eliminated. I do. Therefore, the non-contact heating by the infrared heater 10 in this embodiment is excellent from the viewpoint of preventing infection by various bacteria.
  • the infrared heater 10 is provided with a mechanism (not shown) for moving the infrared heater 10 back and forth in a direction perpendicular to the paper so as to prevent mechanical interference with the auxiliary clamp mechanism 11. If not, it is in the evacuation position.
  • Mold 14 constitutes the outer circumference regulating means of the present invention, It is used for connecting the plastic tube, and functions to regulate the outer circumference to a predetermined diameter when joining the plastic tube, and to shape the welded portion of the plastic tube. That is, as shown in FIG. 7A and FIG. 7B, the molding die 14 is composed of the upper die 15 and the lower die 16, and the upper die 15 is a molding surface having a downward semicircular cross section. 1 and the lower mold 16 has a downward facing semicircular cross-section forming surface 16-1 and is normally separated as shown in Fig. 7A, but approaches each other as shown by arrow c. When the upper mold 15 and the lower mold 16 are combined as shown in FIG.
  • a cylindrical molding cavity 17 (see also FIG. 6G) is formed.
  • the plastic tubes 3 and 3A are joined, the plastic tubes are introduced into the rectangular cavity 17 of the mold from both sides (in the direction of the arrow a2 in Fig. 7A) with the opposing end surfaces in a molten state.
  • the fusion ends are abutted and welded.
  • the outer circumference of the plastic tube comes into contact with the inner circumference of the internal cavity 17 of the molding die, so the outer circumference of the plastic tube is restricted.
  • the flesh of the abutment does not protrude in a paris shape, so it is beautiful.
  • the joint shape can be obtained. Since the joint shape is smooth, the dialysis work can be performed without any problem even if this part is clamped at the next or subsequent connection.
  • the entrance of the cavity 17 can be appropriately tapered.
  • FIG. 1A the details of the detaching operation of the plastic tube 3 described in FIG. 1B by the working device 100 will be described step by step with reference to FIGS. 4A to 4B.
  • One stage is shown, and the auxiliary clamp mechanism 11 moves from the retracted position so as to be coaxial with the clamp mechanisms 7 and 8, and in this state, the clamp mechanisms 7, 8, and 11 are open.
  • the plastic tube 3 extending from the dialysate pack 2 to the abdominal cavity of the patient 1 is open, and the clamp mechanism 7, 8, 1 1 Will be introduced.
  • Fig. 4B the clamping mechanisms 7, 8, 11 are closed. That is, as shown for the clamp mechanism 7 in FIG. 5, the clamp members 7-1 and 7-2 are moved in a direction approaching each other, and the plastic tube 3 is moved by the clamp mechanisms 7, 8, and 11. It is crushed flat at three axially separated points.
  • the heating wire cutter 9 which was located at a retracted position (not shown) separated in a direction perpendicular to the plane of the paper, was driven, and as shown in FIG. 4C, the clamp mechanism 7, 11 and 8, Between 11, the heating wire cutter 9 crosses the plastic tube 3 in the direction perpendicular to the plastic tube 3 (the direction perpendicular to the paper surface in FIG. 4C), and as a result, the plastic tube 3 is melted and cut. At this time, since the plastic tube 3 is in a tensioned state between the clamp mechanisms 7 and 11 and between the clamp mechanisms 8 and 11, a sharp cutting state by the heating wire cutter 9 can be obtained.
  • C Fig. 4D shows a plastic tube 3 with a heating wire cutter 9.
  • the auxiliary clamp 11 is retracted in the direction perpendicular to the plane of the drawing, and the central part (not shown) of the cut plastic tube 3 held by the auxiliary clamp 11 is shown. Is discarded. Then, the plastic tube 3 from the patient's abdominal cavity and the electrolyte pack remains clamped by the clamp mechanisms 7, 8, but the plastic tube 3 from the clamp mechanisms 7, 8 at the cutting end side. Tube 3 has lost its tension and The cut ends 6, 6 'of the plastic tube 3 return to a substantially circular cross section under the elasticity.
  • the heating wire cutter 9 is retracted from the axial center position to a retracted position (not shown), and the infrared heater 10 is moved from the retracted position to the cut end of the plastic tube 8 as shown in FIG. 4E. It can be moved to a concentric position.
  • the clamp mechanisms 7 and 8 are moved axially in the direction (arrow a) facing each other from the state of Fig. 4E, and the heating of the infrared heater 10 is performed as shown in Fig. 4F.
  • Parts 12, 12A are located slightly inside cut ends 6, 6 'of plastic tubes 3, 3A, respectively.
  • the heating sections 12, 12A of the infrared heater 10 are located at a close distance without contact with the inner side walls of the plastic tubes 3, 3A, the movement of the clamp mechanisms 7, 8 is stopped. You.
  • the heating sections 12 and 12 A are brought into a red heat state, and the infrared rays generated by the heating cause the inner surface and the end face of the cut end of the plastic tube 3.
  • reference numerals 13 and 13 ' denote the melted portions on the inner surface and the end surface of the end of the plastic tube 3 obtained by such non-contact heating by infrared rays.
  • clamp mechanisms 7 and 8 are quickly retracted in the direction away from each other in the axial direction (arrow al) so as to maintain the molten state of the fusion sections 13 and 13 '. Is retracted from the axis position.
  • the clamping mechanisms 7, 8 are advanced again in the direction in which they face each other (arrow a2), so that the cut ends 6, 6 'of the plastic tube 3 do not touch.
  • the auxiliary clamp mechanism 11 in the open state is simultaneously introduced from the retracted position to the concentric position.
  • stage diagram 4H the clamp member of the auxiliary clamp mechanism 11 is The plastic tube 3 is moved in the approaching direction, and the cut ends 6, 6 'of the plastic tube 3 are crushed flat, whereby the opposing inner peripheral surfaces of the melted portions 13, 13' at the end of the plastic tube 3 are brought into close contact with each other. After the welding and cooling, the sealed ends 5, 5 '(see FIG. 2 for the shape of the sealed end) are formed.
  • FIGS. 6A to 6H Indicates the first stage, and the auxiliary clamp mechanism 11 is introduced at the coaxial position so as to be coaxial with the clamp mechanisms 7 and 8.
  • the clamp mechanisms 7, 8, and 11 are open, and as shown in FIG. 1D, the sealed end 5 of the plastic tube 3 from the patient's abdominal cavity and the plastic from the dialysate pack 2A.
  • the sealing end 5A of the clamp tube 3A is positioned on the axis so that the crushed surface is parallel to the clamp surface of the auxiliary clamp mechanism 11.
  • the clamp member of the auxiliary clamp mechanism 11 is moved in the uniting direction, and the flat sealing ends 5, 5A of the plastic tubes 3, 3A are attached to the auxiliary clamp mechanism. It is clamped between the clamp members of the pump mechanism 11.
  • the heating wire cutter 9 that was in the retracted position was introduced again, and as shown in Figure 6C, the plastic tubes 3, 3A were connected between the clamp mechanisms 7, 11 and between 8, 11.
  • the plastic tubes 3 and 3A are moved in the orthogonal direction (the direction orthogonal to the paper surface of Fig. 6C), and the plastic tubes 3 and 3A extend between the clamp mechanism 7 and the auxiliary clamp mechanism 11.
  • the plastic tubes 3 and 3A are sharply cut between the clamp mechanisms 7 and 11 and between the clamp mechanisms 8 and 11 because the tension between the clamp mechanism and the auxiliary clamp mechanism 11 is relatively high. Is done.
  • Figure 6D shows cutting of plastic tubes 3 and 3A by heating wire cutter 9.
  • the auxiliary clamp 11 is retracted to a retracted position (not shown) while holding the cut portion of the plastic tube from the sealing portions 5 and 5A to the cutting portion, and the auxiliary clamp 11 is shown.
  • the cut portions 5, 5A 'held by the lamp 11 are discarded.
  • the plastic tube 3 from the abdominal cavity of the patient and the plastic tube 3A from the dialysate pack remain clamped by the clamp mechanisms 7 and 8, but are not clamped by the clamp mechanisms 7 and 8.
  • the tension of the plastic tubes 3 and 3A is lost, and the cut ends 6 and 6A of the plastic tubes 3 and 3A at the cut end return to a substantially circular cross section.
  • the heating wire cutter 9 is retracted to the retracted position again, and reaches the stage shown in FIG. 6E, where the infrared heater 10 is moved from the retracted position to a position concentric with the cut end of the plastic tube 8. Will be introduced again.
  • the clamp mechanisms 7, 8 are moved axially in the direction facing each other (arrow a2 in Fig. 6E), and as shown in Fig. 6F, the heating section of the infrared heater 10 is heated. 12 and 12A are located slightly inside the cut ends 6 and 6A of the plastic tubes 3 and 3A, respectively. Then, the movement of the clamp mechanisms 7, 8 is stopped when the heating sections 12, 12A of the infrared heater 10 are located at a close distance without contact with the inner side walls of the plastic tubes 3, 3A.
  • the heating sections 12, 12A are glowed red, and the infrared rays generated by the heating cause the inner surfaces and end faces of the ends of the plastic tubes 3, 3A to be heated and melted.
  • Fig. 6F, 13 and 13A indicate the melted portions on the inner and outer surfaces of the ends of the plastic tubes 3 and 3A obtained by such non-contact heating by infrared rays.
  • the clamp mechanisms 7 and 8 are quickly retracted in the direction away from each other in the axial direction so as to maintain the melted state of the ends of the plastic tubes 3 and 3A (along arrow al), and The infrared heater 10 is retracted to the retract position.
  • the mold 14 is moved from the retracted position to a position where it is aligned with the plastic tubes 3, 3A.
  • the clamp mechanisms 7, 8 are advanced in the directions opposite to each other (the direction of the arrow a2), and the cut ends 6, 6A of the plastic tube are combined into the upper and lower molds (FIG. 7B).
  • the heated end faces at the cut ends 6, 6A of the plastic tube, which are introduced into the cylindrical cavity 17 formed between 15, 15 and 16, are abutted against each other, and the fused portions 13, 13A are welded to each other to generate heat.
  • a weld 4 is formed. Heating by the infrared heater 10 heats not only the end faces of the plastic tubes 3 and 3A, but also the inner periphery adjacent to the end faces, which increases the melting area and increases the welding allowance at the time of the sudden impact.
  • the outer circumference of the plastic tubes 3 and 3A is regulated by the inner circumference of the cylindrical cavity 17 of the molding die 14, so that it is possible to suppress the pallet of the abutting portion and obtain a clean connection state. it can.
  • the molding die 14 is opened up and down as shown in FIG. 7A, and at the same time, the clamping mechanisms 7 and 8 are unclamped.
  • the dialysis solution can be circulated, and peritoneal dialysis can be performed.
  • the temperature of the mold 14 is low and its heat capacity is much smaller than that of the melted part of the plastic tube, so that contact with the mold 14 realizes rapid cooling of the melted part of the plastic tube, The time can be reduced.
  • FIGS. 4A to 4D correspond to FIGS. 4A to 4D in the first embodiment, but show a modified embodiment in which ironing of a liquid by a clamp is performed. That is, when the clamp 7 starts to clamp the plastic tube 3, the clamps 7, 8 are positioned close to the auxiliary clamp mechanism 11 as shown in FIG. Click on plastic tube 3 The lamp is ramped, and the clamps 7, 8 are moved to their original positions in the direction away from each other as shown by the arrow al while maintaining the clamp state. As a result, the plastic tube 3 is laddered between the clamps 7 and 11 and between the clamps 8 and 11, and the liquid is transferred to the plastic tube portion outside the clamps 7 and 8.
  • the heating portions 6 and 6A for heating the ends of the plastic tubes 3 and 3A have a shape that slightly protrudes from the inner surface of the plastic tube, but similar to the second embodiment described later. Even with a simple coil-shaped heating wire (see Fig. 9) separated from the end face of the plastic tube, the ends of the plastic tubes 3 and 3A can be abutted and fused without any trouble.
  • Second embodiment
  • the working device of the second embodiment includes a first pair of upper and lower rollers 18, a second pair of upper and lower rollers 20, and a pair of upper and lower clamp mechanisms 22 between these roller pairs.
  • the upper and lower rollers 18 and 20 are provided in a cantilever shape, are provided so as to be rotationally driven by a rotation driving device (not shown), and have an axis line formed by a linear driving device (not shown). It is provided to be movable in the direction (the direction of arrow k in FIG. 10). By moving the cantilever upper and lower rollers 18, 20 in a direction away from each other, the plastic tube 3 can be introduced between the free ends from there.
  • Each of the clamp mechanisms 22 is composed of a pair of side clamps 24A, 24B and a center clamp 26 between the side clamps 24A, 24B. As shown in FIG. 9, these elements 24A, 24B, and 26 constituting the clamp mechanism 22 are provided in a cantilever shape, and are turned around a fulcrum at one end (not shown) to open these elements. By doing so, the plastic tube 3 can be introduced between them.
  • a support member 28 supports a heating wire cutter 30 for cutting the plastic tube 3 and a heating portion 32 for melting the end of the plastic tube 3.
  • two sets of the heating wire heater 9 and the heating sections 12 and 12A are provided for each of the left and right plastic tubes, but in this embodiment, a common heating wire cutter 3 is provided. 0 and the heating section 32 are shared between the left and right plastic tubes.
  • the heating wire cutter 30 has a nickel wire having a diameter of 0.2 mm and a beam 34 formed of a heat-resistant electrical insulating material extending from the support member 28.
  • the infrared heater 32 is formed by forming a nickel wire having a diameter of 0.5 mm in the form of a plane coil in this embodiment, and fixing both ends to the beam 34.
  • the support member 28 has a linear drive unit (not shown) on the side away from the heating wire cutter 30 and the heating unit 32, and is capable of reciprocating in the horizontal direction (arrows d1, d2).
  • FIG. 11A shows the first stage, in which the upper and lower rollers 18, 20 and the upper and lower clamp mechanisms 2 are opened, and the plastic tube 3 is inserted through the opening.
  • the insertion direction of the plastic tube 3 is indicated by arrow e in FIG.
  • Fig. 11D the plastic tubes 3 are crushed by the roller pairs 18 and 20, and the center clamps 26 of the side clamps 24A and 24B are opened and the left and right roller pairs are opened. 18 and 20 are rotated somewhat in the direction of arrow h, so that the plastic tube 3 is tensioned between the pair of rollers 18 and 20.
  • FIG. 11E the support member 28 at the retracted position in FIG. 9 is moved in the direction of the arrow dl in FIG. 9, and this direction is orthogonal to the paper in FIG. 11E.
  • the heating wire cutter 30 is cross-moved with respect to the plastic tube 3, and as a result, the plastic tube 3 is melted and cut.
  • the cutting releases the tension of the plastic tube 3, and the cut ends 6, 6 '(see Fig. 11F) return to the circular state under the elasticity.
  • the support member 28 is further advanced in the direction of arrow dl in Fig. 9, and the heating section 32 formed by winding a nickel wire into a planar coil cuts the plastic tube 3. Faced to edges 6 and 6 '. By energizing the nickel wire forming the heating section 32, the cut tube end inner side surface and the end surface of the plastic tube 3 exhibit a heat-melted state. Then, the support member 28 is retracted in the direction of the arrow d2 in FIG. In the next stage, Fig.
  • FIGS. 12A to 12H on the left half are schematic side views at each stage of the connection work
  • FIGS. 12A ′ to 12H ′ on the right half are schematic plan views. is there.
  • FIGS. 12A and 12A ′ show the first stage, in which the upper and lower clamp mechanisms 22 each consisting of upper and lower side clamps 24A, 24B and a center clamp 26 are opened, while the lower clamp mechanism is opened.
  • the upper and lower pairs of rollers 18 and 20 are separated from each other, and the sealing end 5 of the plastic tube 3 from the patient's abdominal cavity is introduced between the upper and lower rollers 18 on the left side.
  • the crushed surface of the tube 3A with the sealing end 5A is introduced between the upper and lower rollers 20 on the right side.
  • the plastic tubes 3 and 3A are shifted horizontally.
  • the holding state of the plastic tube 3 by the roller pairs 18 and 20 is shown by the imaginary line P in Figs. 9 and 10, and the holding state of the plastic tube 3A is shown by the imaginary line PA in Figs.
  • FIGS. 12B and 12B ' the left roller pair 18 that has clamped the plastic tube 3 is rotated in the direction of the arrow hi, and the roller 18 squeezes the plastic tube 3 as indicated by the arrow j. To the right, and to just before the right roller pair 20. Note that however, a mechanism is provided to detect the sealing end 5 of the plastic tube 3 and stop the feed of the roller 18. Then, the right side clamp 24B is moved in the approaching direction as indicated by the arrow f, and the flattened plastic tube 3 is clamped.
  • FIGS. 12D and 12D ' showing the next stage, the pair of left and right rollers 18, 20 is slightly reversed in the direction of arrow h, and the plastic tubes 3, 3A are tightened between the rollers 18, 20. Then, the support member 28 in FIG. 9 is advanced in the direction of the arrow dl in FIG. 9, and the electric heating cutter 3 ⁇ is moved in a direction crossing the plastic tubes 3 and 3 A, and is first moved by the electric heating cutter 30. The plastic tube 3 A is cut next, followed by the plastic tube 3.
  • FIGS. 12E and 12E ' show the state after cutting, and the original sealing portions separated by cutting are shown by 5' and 5A 'in FIG. 12E', respectively.
  • the heating part 32 of the infrared heater (the nickel wire is wound into a planar coil) is made into a plastic tube. Position it directly against cut ends 6 and 6A of 3, 3A.
  • the heating section 32 is glowed red by energization, and the infrared rays generated by the heating cause the inner surfaces and the end faces of the ends of the plastic tubes 3 and 3A to be in a heated and molten state.
  • a split mold 36 having a semicircular cross section similar to the upper and lower molds 15 and 16 in the first embodiment (the split mold 36 is formed as shown in FIG. 9) It can be formed integrally with the clamp mechanism 22), so that the cut ends 6 , 6A of the plastic tubes 3 , 3A are sandwiched from above and below, and are formed when the upper and lower dies 15, 16 are combined.
  • the cut ends 6, 6A of the plastic tubes 3, 3A face the molding cavity 38 with a circular cross section, and at the same time, the left and right roller pairs 18, 20 are rotated in the direction of the arrow hi.
  • the plastic tubes 3 and 3A are moved in the direction facing each other in the same manner as the operation described with reference to FIGS. 7A and 7B, and the plastic tubes 3 and 3A are heated at the cut ends 6 and 6A. end faces are provided abutting in the molding cavity 3 in 8 of circular cross section, the molten portion I 3, 13A leads to mutually soluble Chakusuru.
  • FIGS. 12H and 12H ' showing the final stage, the roller pairs 18, 20 and the clamp members 24A, 24B, 26 are opened, and the left and right plastic tubes 3, 3A are joined by the heat-welded portion 4 similar to that in FIG. Connected.
  • the rotation of the rollers 18 and 20 causes the The feeding is securely applied to the stick tubes 3 and 3A, and when connecting the sealing ends 5 and 5A, regardless of the position of the sealing ends 5 and 5A with respect to the rollers 18 and 20 in Fig. 12A when connecting the sealing ends 5 and 5A.
  • since only one heating wire heater 30 and one heating unit 32 are required there is an advantage that the number of parts can be reduced.
  • FIGS. 13 to 16H show a third embodiment, which is the same as the second embodiment in that the heating parts of the heating wire cutter and the infrared heater are shared by the left and right plastic tubes. It is. However, the roller pair in the second embodiment is not used, and a clamp mechanism having an L-shaped cross section is used instead. That is, the clamp mechanism 40 includes upper and lower clamp members 42 on the left and upper and lower clamps 44 on the right. The clamps 42 and 44 have an L-shaped cross section, and the clamps 42 and The lower side of 44 extends to face each other. A center clamp 46 is provided between the left and right L-shaped clamps 42 and 44 so as to face vertically. These clamp members 42, 44, 46 are provided at the free end of the lever as shown in FIGS.
  • auxiliary guides 48 and 50 for lateral movement of the plastic tube are provided with L-shaped cross sections as shown in FIGS. 16B and 16B ′. It is installed outside the pumps 42 and 44. In addition, upper and lower halves 52 having semicircular inner surfaces are installed in the clamp mechanism. Since the structures of the moving member 28 and the heating wire cutter 30 and the infrared heater 32 mounted thereon are the same as those in the second embodiment, the same reference numerals are given to the parts having the same functions in FIG. The description is omitted.
  • FIG. 15A showing the first stage, the upper and lower clamp mechanisms 40 are in an opened ready state.
  • FIG. 15C which shows the next stage, the upper and lower center clamps 46 of the clamp mechanism 40 are moved in the approaching direction as indicated by arrow f, and hit the center clamp 46.
  • the area of the plastic tube 3 that comes into contact is crushed flat.
  • Fig. 15D which shows the next stage, the left and right and left and right side clamps 42 are moved in the opposite directions as indicated by the arrow f ', respectively, while maintaining the clamped state by the center clamp 46.
  • the portion of the plastic tube 3 that abuts the side clamps 42 and 44 is also crushed flat.
  • Fig. 15E which shows the next stage
  • the left and right side clamps 42, 44 holding the plastic tube 3 are slightly moved in the direction away from each other as indicated by the arrows, and the distance between the side clamps 42, 44 is increased.
  • the plastic tube 3 gripped by the tube receives tension.
  • the support member 28 at the retracted position in FIG. 13 is moved in the direction of the arrow dl in the same figure, and as a result, the heating wire power 30 is moved in the direction of the arrow dl with respect to the plastic tube 3.
  • the plastic tube 3 is melt-cut.
  • the cutting releases the tension of the plastic tube 3, and the cut end returns to a circular state under its elasticity. Cut
  • Cut The damaged end is indicated by 6, 6A.
  • FIG. 15F which shows the next stage, the supporting member 28 is further advanced in the direction of arrow dl in FIG. 13 (in the direction crossing the paper in FIG. 15F), and the nickel wire is wound into a planar coil.
  • the heated section 32 is made to face the cut ends 6 and 6A of the plastic tube 3. Then, by energizing the nickel wire constituting the heating section 32, the inner surfaces and the end surfaces of the cut ends 6, 6A of the plastic tube 3 exhibit a heated molten state.
  • FIG. 15G the center clamps 46 are moved towards each other, the cut ends 6, 6 'of the plastic tube 3 are crushed flat, and the plastic tube 3 The opposing inner peripheral surfaces of the fused portions 13 and 13 'at the ends are brought into close contact with each other and welded to form sealed ends 5, 5' (see FIG. 2).
  • FIG. 15H showing the last stage, the side clamps 42 and 44 and the center clamp 46 are opened, and the cutting process of the plastic tube 3 is completed.
  • FIG. 16A shows the first step. This indicates that the upper and lower clamp mechanisms 40 have been opened.
  • the plastic tube 3 moves from the left side as shown by the arrow m while being guided by the guide 48, and seals the plastic tube 3 from the patient's abdominal cavity.
  • the end 5 is introduced from between the left clamps 42, and the flattened sealing end 5 is positioned by abutting the stopper 60, and the right clamp 44 and the right clamp 44 are positioned. Aligned.
  • the plastic tube 3A moves from the right side as indicated by the arrow m while being guided by the guide 50, and the plastic tube from the dialysate pack is moved.
  • Tube 3A The sealing end 5A is introduced from between the right clamps 44 and positioned by contacting the stopper 62, and the flattened sealing end 5A is positioned on the left clamp. Aligned with lamp 42.
  • the phantom line P indicates the clamped state of the plastic tube 3
  • the phantom line PA indicates the clamped state of the plastic tube 3A.
  • the L-shaped clamp 42 on the left side is moved in the approaching direction as shown by the arrow f, and the portion clamped by the center clamp 46
  • the plastic tube 3 adjacent to the plastic tube 3 is crushed flat, and at the same time, as shown in FIG. 16D ', the right cross-sectional L-shaped clamp 44 is moved in the approaching direction as indicated by the arrow f, and the center clamp 4 6
  • the portion of the plastic tube 3A adjacent to the portion clamped by the flattened portion is crushed flat, so that the plastic tubes on the sealing end portions 5 and 5A side by the clamps 42 and 44 are flattened and crushed.
  • Figure 16F shows the plastic tubes 3 and 3A after cutting. Since the tension is released by the cutting, the elasticity of the plastic tubes 3, 3A causes the open ends 6, 6A to return to a circular shape. Thereafter, the clamps 42 and 44 are independently moved in a direction perpendicular to the plane of FIG. 16F, and the elasticity of the plastic tubes 3 and 3A aligns the open ends 6 and 6A. Let it. In Fig. 13, the phantom line P 'indicates that the plastic tubes 3 and 3A are finally aligned in the axial direction, and the plastic tube 3 and 3A is located above the plastic tubes 3 and 3A located along the imaginary line P'. It can be seen that the half mold 52 is located. This step is the same as the operation of FIGS.
  • Fig. 16G which shows the next stage, the cut ends of the plastic tubes 3, 3A are formed by the upper and lower split molds 52 having semicircular inner peripheral surfaces similar to those in Figs. 7A and 7B.
  • the left and right cross section: L-shaped clamp 42 is moved in the approaching direction as indicated by arrow al while holding 6 and 6A from above and below, and the circular cross section formed when upper and lower dies 52 are combined is formed.
  • the cut ends 6, 6A of the plastic tubes 3, 3A are moved toward the cavities 38 so as to face each other, and abutting welding of the molten portion by infrared heating is performed.
  • Fig. 16H the left and right cross-section L-shaped clamps 42 are separated vertically and the split mold 52 at the center is opened vertically, and is heated at the cut ends 6, 6A of the plastic tube.
  • the welded portions 13 and 13A are welded to each other to form a heat-welded portion 4 similar to that shown in FIG.
  • the clamp 42 having an L-shaped cross section is flat.
  • the plastic tube is clamped in some parts, and the liquid inside the plastic tube can be squeezed simply by approaching the clamp without complicated operations such as rotation. There is an advantage that can be simplified. Modified embodiment
  • the forming mold at the time of connection is composed of an upper mold half 54 having a semicircular cross section and a lower mold half 56 having the same semicircular cross section.
  • the plastic tubes 3 and 3A clamped by the clamps 7 and 8, respectively, have their open ends 6 and 6A heated by infrared rays.
  • a thin sleeve 58 made of a heat-shrinkable plastic material is supplied from supply means (not shown).
  • the heated open ends 6, 6A of the plastic tubes 3, 3A are moved to the sleeves 58, 8 by moving the clamps 7, 8 in the approaching direction as indicated by an arrow a2.
  • the upper and lower dies 54 and 56 are mutually matched in the direction of arrow f as shown in Fig. 17B, and a circular cavity is formed between the dies 54 and 56.
  • the non-contact heater is infrared heating using an electric heater, but this is merely an example, and other non-contact heating methods, for example, hot air Heating or laser heating can be used.
  • the clamped plastic tubes 3 and 3A are fixed, and the plastic heating tubes 3 and 3A are cut by moving the heating wire cutters 9 and 30. In some cases, cutting by moving the plastic tubes 3 and 3A is also possible. In short, it is good if the heating wire cutter and the plastic tube can be moved relative to each other in the cross direction.
  • the infrared heaters 10 and 32 in this embodiment also achieve the function of killing various bacteria near the open end of the plastic tube and preventing contamination by the bacteria due to the high temperature.
  • a sterilizing device using ultraviolet light or the like can be incorporated into the device 100 in order to ensure that the bacteria can be prevented from entering the plastic tubes 3 and 3A during the sealing or connection work.
  • the present invention eliminates the invasion of various bacteria in plastics in peritoneal dialysis, other hemodialysis, and treatment of culture in biotechnology, etc. It can be used when measures such as cutting, sealing, and connecting tubes are required.

Abstract

Sealing and joining of plastic tubes are disclosed. Clamp mechanisms (7, 8) for plastic tubes and an auxiliary clam mechanism (11) therefor are installed, and an electric heating wire cutter (9) and an infrared heater (10) are installed. A plastic tube (3) is fusion-cut by moving the electric heating wire cutter (9) in a cross direction while clamping the plastic tube (3) by the clamp mechanisms (7, 8). Cut ends (6, 6') are noncontact-wise heated by the infrared heater (10) to have fusion zones (13, 13') formed on their inner surface and end surfaces, which are then crushed by the auxiliary clamp mechanism, the opposed inner surfaces being fused to serve as sealed ends. During tube cutting, the sealed end is cut by the electric heating wire (9), the cut end surface is noncontact-wise heated by infrared rays, and end surfaces are abutted against each other within a shaping form, thus forming the fusion zones.

Description

明 細  Detail
プラスチッ クチ ブ処理方法及び装置  Plastic processing method and apparatus
発明の背景 Background of the Invention
この発明はプラスチッ クチューブの封止若しく は接続のための処 理方法及び装置に関する も のであ り 、 腹膜透析において患者の腹腔 と透析液バッ ク と の間のプラスチッ クチューブ ( ト ラ ンス フ ァチュ ープ) の切離し及ぴ接続を無菌にて患者自 らが行 う ため等に特に好 適なものである。  The present invention relates to a processing method and apparatus for sealing or connecting a plastic tube, and in a peritoneal dialysis, a plastic tube (transformation tube) between a patient's peritoneal cavity and a dialysate back. It is particularly suitable for the patient to perform the disconnection and connection of aseptic method under aseptic condition by himself.
背景技術 Background art
腹膜透析においては患者の腹腔にはプラスチッ クチューブ (カテ 一テル) の一端が埋め込まれ、 プラスチッ クチューブの他端は透析 液パックが接続される。 透析液パッ ク の交換作業に際してほ,、 第 1 段階と して、 交換に先立ってプラスチッ クチューブを切断する と共 に切断端の封止を行い、 第 2段階と して患者腹腔からのプラスチッ クチューブの封止端部を新規な透析液パッ クからのプラスチ クチ ユーブの封止された端部と の接続を行 う よ う にしている。 そして、 患者自 らの作業が可能なよ う にプラスチッ クチューブの封止及び接 続作業の 自動化のためのシステムが各種提案されている。  In peritoneal dialysis, one end of a plastic tube (a catheter) is embedded in the patient's peritoneal cavity, and the other end of the plastic tube is connected to a dialysate pack. When replacing the dialysate pack, the first step is to cut the plastic tube and seal the cut end prior to replacement as the first step, and the second step is to make the plastic tube from the patient's abdominal cavity. The sealed end of the plastic tube is connected to the sealed end of the plastic tube from the new dialysate pack. Various systems have been proposed for automating the plastic tube sealing and connection work so that patients can perform their own work.
従来技術と して特開平 6 — 1 9 7 9 5 7号公報においては、 ブラ スチックチューブの切断時はプラスチッ クチューブを一対の離間 し たク ランプによって平坦状にク ランプし、 電熱ヒ ータ によ り 加熱さ れた薄い銅版である ゥエーハをプラスチックチューブの交差方向に 移動させる こ と によ り ク ラ ンプ部間においてプラスチックチューブ を切断する。 そして、 ク ラ ンプをゥエーハ面と平行に次いでゥェ一 ハ面と直交する方向移動させる こ と によ り プラスチッ クチューブ切 断端を ゥエ ーハ 'に形成される凹部に導入する。 そのため、 凹部への 導入長さ分プラスチックチューブ切断端が熱溶融され、 そ して最終 的には低温のク ランプがゥエーハに接触する こ と によ り プラスチッ クチューブは冷却され、 プラスチッ ク チューブの封止端部が形成さ れる。 プラスチッ クチューブの封止端部同士の接続 (溶接) を行 う 際には封止端部を対向させた状態でプラスチッ クチューブをク ラ ン プし、 加熱されたゥエーハを交差方向に移動する こ と によ り チュー ブの封止端部を切除する。 そ して、 プラスチックチューブを保持 し た状態でク ラ ンプを捩る よ う に移動させる こ と によ り プラスチッ ク の端部を開 口 させ、 ついでク ラ ンプを相互に接近する方向に移動さ せる こ と によ り プラスチッ ク開 口端面同士を融着させ、 プラスチ ッ クチューブの接続が完了する。 As a prior art, in Japanese Patent Application Laid-Open No. Hei 6-199757, when a plastic tube is cut, a plastic tube is clamped flat by a pair of spaced clamps, and the plastic tube is attached to an electrothermal heater.ゥ Cut the plastic tube between the clamps by moving the evaporator, which is a thinner copper plate heated in the cross direction of the plastic tube. Then, the plastic tube is cut by moving the clamp parallel to the wafer surface and then in the direction perpendicular to the wafer surface. The stump is introduced into the recess formed in the wafer. Therefore, the cut end of the plastic tube is heated and melted by the length introduced into the recess, and finally, the plastic tube is cooled by the low temperature clamp coming into contact with the wafer, and the plastic tube is sealed. A toe is formed. When connecting (welding) the sealed ends of the plastic tubes, clamp the plastic tubes with the sealed ends facing each other and move the heated wafer in the cross direction. Cut off the sealed end of the tube with. Then, by holding the plastic tube and twisting the clamp, the end of the plastic is opened, and then the clamps are moved in a direction to approach each other. By doing so, the plastic opening end faces are fused together, and the connection of the plastic tube is completed.
特開平 6 — 1 9 7 9 5 7 号公報の方法はプラスチックチューブの 封止端部の形成に際しては電熱ヒータ によ り 加熱される薄い銅版で ある ゥエ ーハに形成される 凹部にプラスチッ クチューブの切断端を 導入する こ と によ り プラスチックチューブを溶融させ、 プラスチッ クチューブの接続 (溶接) に際しては加熱されたゥエーハをプラス チックチューブに対して拭 う よ う に移動させる こ と によ り プラスチ ック封止端部の除去及びプラスチッ ク チューブの端面の溶融を行つ ている。 そのため、 温度がせいぜい 3 0 0 °Cのゥエーハに溶融物が 付着しやすく 、 雑菌による感染防止の観点から ゥエーハはその都度 使い捨てに してお り 、 透析コス 卜が嵩む原因の一つと なっていた。 また、 プラスチックチューブの封止端部の形成のためプラスチッ ク チューブの切断端をゥエーハに形成される凹部に導入する必要があ るためプラスチッ クチューブのク ラ ンプの複雑かつ微妙な動きが必 要とな り 、 高精度の制御装置が必要と なるため装置コス 卜が嵩む欠 点があった。 装置コス ト を低減するための改善と して特開平 1 0 — 1 6 5 4 9 8 号公報では回転型のク ラ ンプと封止補助チューブの採用を行う も のを開示する。 即ち、 特開平 1 0 — 1 6 5 4 9 8 号公報に開示され た技術では一対の回転ク ラ ンプを離間 させて配置し、 一方の回転ク ランプに腹腔からのプラスチックチューブ及ぴ封止補助チューブを ク ランプし、 他方の回転ク ランプには透析液バッ クからのプラスチ ックチューブを及び封止補助チューブをク ランプする。 そして、 プ ラスチック チューブの切断時は回転ク ラ ンプ間を ゥエーハ (特開平 1 0 - 1 6 5 4 9 8 号公報の場合は特開平 6 — 1 9 7 9 5 7 号公報 と異な り ゥエーハ内にヒータを内臓している) を移動させ、 ゥエー ハの熱によ ってプラスチッ クチューブを切断する。 そして、 回転ク ランプを回転させる こ と によ り プラスチッ クチューブの溶融切断端 を相手方の回転ク ラ ンプにク ランプされた封止補助チューブに対向 させ、 ク ラ ンプを向き合う 方向に移動させる こ と によ り プラスチッ クチューブの切断端を対向 した補助チューブに対 し端面同士で溶着 する。 The method disclosed in Japanese Patent Application Laid-Open No. 6-1979757 is a thin copper plate that is heated by an electric heater when forming the sealed end of a plastic tube. The plastic tube is melted by introducing the cut end of the plastic tube, and the plastic tube is connected (welded) by moving the heated aluminum wafer to wipe the plastic tube. Removal of plastic sealing end and melting of plastic tube end face. For this reason, the melt easily adheres to the ewa at a temperature of at most 300 ° C, and from the viewpoint of preventing infection by various bacteria, the eha is disposable each time, which is one of the causes of the increase in dialysis cost. . In addition, since it is necessary to introduce the cut end of the plastic tube into a concave portion formed in the wafer to form the sealed end of the plastic tube, complicated and subtle movement of the plastic tube clamp is required. In other words, a high-precision control device was required, and the device cost was high. As an improvement for reducing the cost of the apparatus, Japanese Patent Application Laid-Open No. H10-165498 discloses a technique employing a rotary clamp and a sealing auxiliary tube. That is, in the technology disclosed in Japanese Patent Application Laid-Open No. H10-165498, a pair of rotating clamps are arranged apart from each other, and a plastic tube and a sealing aid from the abdominal cavity are placed on one rotating clamp. Clamp the tube, the other rotating clamp with the plastic tube from the dialysate backing and the sealing aid tube. When cutting the plastic tube, the distance between the rotating clamps is set to the distance between the rotating clamps (in the case of Japanese Patent Application Laid-Open No. Hei 10-169498, unlike in the case of Japanese Patent Application Laid-Open No. Hei 6-199757). Move the heater), and cut the plastic tube by the heat of the heater. Then, by rotating the rotary clamp, the melt-cut end of the plastic tube is made to face the sealing auxiliary tube clamped by the other rotary clamp, and the clamp is moved in the opposite direction. As a result, the cut end of the plastic tube is welded to the opposite auxiliary tube at the end faces.
この特開平 1 0 — 1 6 5 4 9 8 号公報の技術においてはク ランプ の動作に関 しては比較的単純化がされてはいるが、 依然と して使い 捨てのゥエーハを使用 している。 また、 そ してゥエーハ と してはヒ ータ内臓の高価なものであ り 、 しかも封止補助チューブが必要であ るため透析コス 卜が嵩むものとなっていた。  In the technology disclosed in Japanese Patent Application Laid-Open No. H10-165548, the operation of the clamp is relatively simplified, but it is still possible to use a disposable wafer. I have. In addition, as a wafer, an expensive heater with a built-in heater was required, and a dialysis cost was increased because a sealing auxiliary tube was required.
この発明は以上の従来技術の問題点に鑑みてな されたものであ り プラスチッ クチューブの無菌での切離し及び接続を低コス トにて実 現し う る よ う にする こ と を 目的とする。 発明の開示  The present invention has been made in view of the above-mentioned problems of the prior art, and has as its object to realize aseptic disconnection and connection of a plastic tube at low cost. Disclosure of the invention
この発明によれば、 プラスチックチューブを切断するべく 処理す る方法であって、 プラスチックチューブを長手方向に緊張するべく 同方向に離間 した一対の部位間で扁平状にク ランプしつつ、 一対の ク ラ ンプ部間で線状発熱体をプラスチックチューブに交差する方向 に移動させる こ と によ り プラスチッ クチューブを溶融切断する方法 が提供される。 According to the invention, the plastic tube is processed to be cut. A linear heating element intersects the plastic tube between a pair of clamps while clamping flatly between a pair of parts separated in the same direction to tension the plastic tube in the longitudinal direction. Thus, a method for melting and cutting a plastic tube by moving the plastic tube in a direction in which the plastic tube moves is provided.
この発明によれば、 プラスチッ クチューブの切断端部を封止する ベく 処理する方法であって、 プラスチッ クチューブを切断端部に近 接して扁平状にク ラ ンプしつつ、 ク ラ ンプ部に近接したプラスチッ クチューブ端面は開口 させ、 プラスチッ クチューブの少なく と も開 口端よ り 臨まれる内周面を非接触式に溶融状態に至るまで加熱し、 プラスチッ クチューブ端部を外周側よ り 圧潰する こ と によ り 対向内 周面同士を溶着せしめ、 これによ り プラスチックチューブの切断端 部の封止を行う方法が提供される。  According to the present invention, there is provided a method for sealing a cut end portion of a plastic tube, wherein the plastic tube is clamped in a flat shape close to the cut end portion and close to the clamp portion. Open the plastic tube end face, and heat at least the inner peripheral surface of the plastic tube facing the open end until it reaches a molten state in a non-contact manner, and crush the plastic tube end from the outer peripheral side. Thereby, the opposed inner peripheral surfaces are welded to each other, thereby providing a method of sealing the cut end of the plastic tube.
この発明によれば、 一対のプラスチッ クチューブの切断端面を接 続するべく 処理する方法であって、 一対のプラスチッ クチューブを 切断端面に近接した部位を扁平状と しつつ端面は実質的に円形に開 口する よ う にク ランプし、 一対のプラスチックチューブの少なく と も対向 した開口端面を非接触的に溶融状態に至る まで加熱し、 それ ぞれのプラスチックチューブをその外周を規制しつつ相互に接近す る方向に移動させる こ と によ り 対向 した開 口端面同士を当接 · 溶着 させる方法が提供される。  According to the present invention, there is provided a method for connecting the cut end faces of a pair of plastic tubes so as to connect the cut end faces, the end faces being substantially circular while the portions close to the cut end faces are made flat. The plastic tubes are clamped so as to be opened, and at least the opposite open end faces of the pair of plastic tubes are heated in a non-contact manner to a molten state, and the respective plastic tubes approach each other while regulating the outer circumference thereof. A method of contacting and welding opposing open end faces by moving in opposite directions is provided.
この発明によれば、 プラスチッ クチューブを切断するべく 処理す る方法であって、 緊張されたプラスチックチューブを長手方向に離 間 した一対の部位間で扁平状にク ラ ンプしつつ、 一対のク ランプ部 間で線状発熱体とプラスチックチューブと を相対的に交差する方向 に移動させる こ と によ り プラスチッ クチューブを溶融切断する方法 が提供される。 プラスチッ クチューブの溶融切断はニク ロ ム線や白金線のよ う な 線状発熱体と プラスチックチューブと を交差方向に相対移動させる こ と によ り 行われる。 従来の特開平 6 — 1 9 7 9 5 7 号公報ゃ特開 平 1 0 — 1 6 5 4 9 8 号公報のゥエーハによ る切断と は異な り 、 二 ク ロ ム線や白金線の よ う な高温の線状発熱体の交差方向における相 対移動によ るプラスチックチューブの切断は発熱体の高温によ り 雑 菌が生ぜず、 また線径を適度に細く する こ と によ り 極めて良好な切 れ味を得る こ とができ る。 切れ味が良好であるため、 溶融物の付着 が殆ど無く ニク ロ ム線や白金線の殆ど全耐久期間にわたっての繰返 し的な使用が可能であ り 、 従来技術における ゥエーハの使い捨て と 比較してラ ンニングコス 卜の大幅削減を実現する こ とができ る。 ま た、 従来技術における金属薄片と してのゥエーハによ る間接的な加 熱と比較して、 高い電力消費効率を得る こ と ができ、 エネルギ効率 の観点からのコス ト低減をも実現する こ と ができ る。 According to the present invention, there is provided a method for treating a plastic tube so as to cut the plastic tube, wherein the tensioned plastic tube is clamped in a flat shape between a pair of portions spaced apart in a longitudinal direction, and a pair of clamps are formed. A method for melting and cutting a plastic tube is provided by moving a linear heating element and a plastic tube relatively in a direction intersecting with each other. Melt cutting of the plastic tube is performed by relatively moving a linear heating element such as a nickel wire or a platinum wire and the plastic tube in the cross direction. Unlike the conventional cutting method using an e-ha in Japanese Patent Application Laid-Open No. Hei 6 — 197 757 and Japanese Patent Application Laid-Open No. Hei 10 — 169 498, a two-chrome wire or a platinum wire is used. Cutting the plastic tube by the relative movement of such a high-temperature linear heating element in the cross direction does not cause any germs due to the high temperature of the heating element, and is extremely reduced by appropriately reducing the wire diameter. Good sharpness can be obtained. Good sharpness means that there is almost no adherence of the molten material, and it is possible to use nickel wire and platinum wire repeatedly for almost the entire endurance period. The running cost can be greatly reduced. In addition, higher power consumption efficiency can be obtained compared to the indirect heating by a wafer as a metal flake in the conventional technology, and a cost reduction from the viewpoint of energy efficiency can be realized. be able to.
この発明によれば、 プラスチック チューブの切断端部を封止する ベく 処理する方法であって、 プラスチッ クチューブを切断端部に近 接して扁平状にク ラ ンプしつつ、 ク ラ ンプ部に近接したプラスチッ クチューブ端面は開 口 させ、 プラスチッ クチューブの少なく と も開 口端よ り 臨まれる内周面を非接触式に溶融状態に至るまで加熱し、 プラスチッ クチューブ端部を外周側よ り 圧潰する こ と によ り 対向内 周面同士を溶着せしめ、 これによ り プラスチッ クチューブの切断端 部の封止を行 う 方法が提供される。  According to the present invention, there is provided a method for sealing a cut end of a plastic tube, wherein the plastic tube is clamped in a flat shape close to the cut end and close to the clamp. The opened end of the plastic tube is opened, and at least the inner peripheral surface of the plastic tube facing the open end is heated in a non-contact manner until it reaches a molten state, and the end of the plastic tube is crushed from the outer peripheral side. Thus, the opposing inner peripheral surfaces are welded to each other, thereby providing a method for sealing the cut end of the plastic tube.
プラスチッ クチューブの切断端面は外部よ り その少なく と も内周 面が非接触的に加熱され、 その後プラスチッ クチューブ端部を外側 から圧潰する こ と によ り 内周対向面が溶着され、 プラスチックチュ ーブの切断端部の封止が行われる。 非接触加熱であるため従来の特 開平 6 — 1 9 7 9 5 7号公報のよ う な ゥエーハに形成される凹部へ の導入によ る封止 と比較してゥエーハの使い捨てが必要なく な り ラ ンニングコス ト を削減し う る と と もにゥエーハの凹部にプラスチッ クチューブ端部を導入するためのク ラ ンプの精巧複雑な動作機構が 不要であ り 、 単純な動作のみであ り 自動化装置のコス ト も低減し う る。 また、 特開平 1 0 — 1 6 5 4 9 8 号公報のよ う な回転ク ランプ による封止における補助チューブが不要と なるためこの点でも コス ト低減を図る こ と ができ る。 At least the inner peripheral surface of the cut end surface of the plastic tube is heated in a non-contact manner from the outside, and then the inner peripheral surface is welded by crushing the end of the plastic tube from the outside, so that the plastic tube is welded. The cut end of the bush is sealed. Because of non-contact heating, it goes to the recess formed in the wafer as in the conventional Japanese Patent Application Laid-Open No. 6-199757. Eliminating the need for disposable e-wafers compared to sealing by the introduction of e-tubes, reducing running costs and elaborate clamps for introducing plastic tube ends into e-recess recesses A simple operation mechanism is not required, and only a simple operation is performed, and the cost of the automation device is reduced. In addition, since an auxiliary tube for sealing with a rotating clamp as disclosed in Japanese Patent Application Laid-Open No. H10-165498 is not required, the cost can be reduced in this respect as well.
この発明によれば、 一対のプラスチックチューブの切断端面を接 続するべく 処理する方法であって、 一対のプラスチッ クチューブを 切断端面に近接した部位を扁平状と しつつ端面は実質的に円形に開 口する よ う にク ラ ンプし、 一対のプラスチッ クチューブの少なく と も開 口端面を非接触的に溶融状態に至るまで加熱し、 一対のプラス チックチューブの加熱された開口端面を対向 させる と 共にそれぞれ のプラスチックチューブをその外周を規制しつつ相互に接近する方 向に移動させる こ と によ り 対向 した開 口端面同士を当接 · 溶着させ る方法が提供される。  According to the present invention, there is provided a method for connecting the cut end surfaces of a pair of plastic tubes so as to connect the cut end surfaces to each other. At least the open end faces of the pair of plastic tubes are heated in a non-contact manner to a molten state, and the heated open end faces of the pair of plastic tubes are opposed to each other. By moving the respective plastic tubes in a direction of approaching each other while regulating their outer circumferences, a method is provided for abutting and welding the opposed open end faces.
一対のプラスチッ ク チューブの少な く と も開 口端は非接触的な加 熱を受け、 その後一対のプラスチッ クチューブは外周を規制 しつつ 相互に接近する方向に移動され、 加熱を受けた開 口端は当接し溶着 され、 これによ り プラスチックチューブの接続が行われる。 非接触 による一対のプラスチッ ク チューブの加熱方式によ り 従来のゥエー ハのよ う な使い捨て部品を使用 しないためラ ンニングコス トの低減 を実現する こ とができ る。 また、 溶着中のプラスチッ クチューブの 外周を規制しているためパ リ のない又は少ない滑らかな接続を実現 する こ とができ る。 また、 外周規制手段と の接触によ ってプラスチ ックチューブの早期冷却が実現するため融着作業時間が少なく サイ クルタイ ムの短縮を図る こ とができ る。 この発明によれば、 プラスチッ ク チューブの端部を封止するべく 処理する方法であって、 プラスチッ ク チューブをその長手方向に緊 張させて同方向に離間した一対の部位において外側から扁平にク ラ ンプし、 一対のク ラ ンプ部間において線状発熱体とプラスチッ ク チ ユーブと の交差方向の相対移動によ り プラスチッ クチューブを溶融 状態下で切断し、 切断端よ り 臨まれるプラスチッ クチューブの内周 部分を非接触的に加熱し、 このプラスチッ クチューブを外側から圧 潰する こ と によ り 加熱内周部分同士を融着に至ら しめ、 これによ り プラスチッ クチューブの端部を封止する方法が提供される。 At least the open ends of the pair of plastic tubes are heated in a non-contact manner, and then the pair of plastic tubes are moved in a direction approaching each other while regulating the outer periphery, and the heated open ends are heated. Are abutted and welded, thereby connecting the plastic tube. Non-contact heating of a pair of plastic tubes eliminates the use of disposable parts like conventional wafers, thus reducing running costs. In addition, since the outer circumference of the plastic tube during welding is regulated, a smooth connection without or with less pallets can be realized. In addition, since the plastic tube is cooled early by contact with the outer circumference regulating means, the welding time is reduced and the cycle time can be shortened. According to the present invention, there is provided a method for treating an end portion of a plastic tube so as to seal the end portion, wherein the plastic tube is tensioned in a longitudinal direction thereof and flattened from outside at a pair of portions separated in the same direction. The plastic tube is cut in a molten state by the relative movement of the linear heating element and the plastic tube in a crossing direction between the pair of clamp portions, and the plastic tube facing the cut end is cut. The inner peripheral portion is heated in a non-contact manner, and this plastic tube is crushed from the outside so that the heated inner peripheral portions are fused to each other, thereby sealing the end of the plastic tube. A method is provided.
線状発熱体と の交差方向の相対移動によ り プラスチッ ク チューブ の切断が行われ、 その後切断端よ り 臨まれるプラスチックチューブ 内周を非接触的に加熱し、 外側から圧潰する こ と によ り 対向内周面 を溶着し、 これによ り プラスチッ ク チューブの端部を封止を行って おり 、 従来のゥエーハのよ う な使い捨ての部品を使用する こ と な く プラスチッ クチューブの封止端部の形成が可能と な り 、 コス ト低減 を図る こ と ができ る。  The plastic tube is cut by the relative movement in the cross direction with the linear heating element, and then the inner circumference of the plastic tube, which is exposed from the cut end, is contactlessly heated and crushed from the outside. The inner peripheral surface of the plastic tube is welded to seal the end of the plastic tube, and the sealed end of the plastic tube can be used without using disposable parts like a conventional wafer. It is possible to form a portion, and it is possible to reduce costs.
この発明によれば、 内部に液体を有したプラスチッ ク チューブの 端部を封止するべく 処理する方法であって、 プラスチッ クチューブ をその長手方向に緊張するべく 同方向に離間した一対の部位におい て外側から扁平にク ランプしつつク ラ ンプ部間の液体をク ラ ンプ部 の外側におけるプラスチッ クチューブの部位に移行させ、 一対のク ランプ部間において線状発熱体とプラスチックチューブと の交差方 向の相対移動によ り プラスチックチューブを溶融状態下で切断し、 切断端よ り 臨まれるプラスチックチューブの少な く と も内周部分を 非接触的に加熱し、 このプラスチッ クチューブを外側から圧潰する こ と によ り 加熱内周部分同士を融着に至ら しめ、 これによ り 内部に 液体を有したプラスチック チューブの端部を封止する方法が提供さ れる。 According to the present invention, there is provided a method for treating an end portion of a plastic tube having a liquid therein so as to seal the end portion of the plastic tube. The liquid between the clamp portions is transferred to the plastic tube portion outside the clamp portion while flattening the clamp from the outside, and the direction in which the linear heating element and the plastic tube intersect between the pair of clamp portions. The plastic tube is cut in a molten state by the relative movement of the plastic tube, and at least the inner peripheral part of the plastic tube facing the cut end is heated without contact, and this plastic tube is crushed from the outside. As a result, the heated inner peripheral portions are fused to each other, whereby the end of the plastic tube having the liquid inside is heated. Provided a way to seal It is.
プラスチックチューブの内部には液体が含まれているがク ランプ 部間におけるプラスチッ クチューブの部位の液体をク ランプ部の外 側に移行させているため、 切断部には液体が残存せず、 線状発熱体 によるプラスチッ クチューブの切断時にその漏洩や熱によ る蒸発が なく 、 衛生的な環境を長期にわた り 保持する こ と ができ る。  Although liquid is contained inside the plastic tube, the liquid in the plastic tube part between the clamps is transferred to the outside of the clamp, so no liquid remains in the cut, and there is a linear shape. When the plastic tube is cut by the heating element, it does not leak or evaporate due to heat, so that a sanitary environment can be maintained for a long time.
この発明によれば、 それぞれが一端で封止された一対のプラスチ ックチューブを接続するべく 処理する方法において、 一対のプラス チックチューブをそれぞれの封止端部に近接した部位において扁平 にク ランプする と共に、 ク ランプ部よ り 封止端部側においてプラス チックチューブを軸線方向に緊張し う る よ う に保持し、 線状発熱体 とプラスチッ クチューブと を交差方向に相対移動させプラスチッ ク チューブを切断する こ と によ り ク ラ ンプ部よ り 封止端部側のプラス チックチューブの部分を切除する と共にプラスチッ クチューブの封 止端部を開 口 させ、 一対のプラスチッ クチューブの少なく と も開 口 端面を非接触的に加熱し、 一対のプラスチッ クチューブの前記加熱 された開 口端面を軸線方向に対向させる と共に一対のプラスチッ ク チューブをその外周を規制しつつその軸線方向に相互に近接する方 向に移動させて、 一対のプラスチッ ク チューブの加熱された開口端 面同士を突き当てる こ と によ り 開口端面同士を融着せしめる方法が 提供される。  According to the present invention, in a method for connecting a pair of plastic tubes, each of which is sealed at one end thereof, the pair of plastic tubes are flatly clamped at a portion close to each of the sealed ends. The plastic tube is held so as to be tensioned in the axial direction on the sealing end side of the clamp, and the linear heating element and the plastic tube are relatively moved in the cross direction to cut the plastic tube. As a result, a portion of the plastic tube on the sealing end side from the clamp portion is cut off and the sealing end of the plastic tube is opened, so that at least the opening end face of the pair of plastic tubes is opened. Heated in a non-contact manner so that the heated open end faces of the pair of plastic tubes face each other in the axial direction. At the same time, the pair of plastic tubes is moved in a direction approaching each other in the axial direction thereof while regulating the outer circumference thereof, and the heated open end faces of the pair of plastic tubes are brought into contact with each other to open. A method is provided for fusing the end faces together.
端部が封止された一対のプラスチッ クチューブの接続は線状発熱 体の交差方向移動によ る封止端部の除去によ り プラスチックチュー ブの端部を開口 させ、少なく と も この開 口端部を非接触的に加熱し、 その後に一対のプラスチッ ク チューブを対向方向に開 口端部が当 接 · 溶着に至るまで移動して行ってお り 、 線状発熱体による切断及 び非接触型の加熱の採用によ り 従来技術における ゥエーハのよ う な 使い捨て部品が不要であ り 、 また溶着時に成形型な どによ り 外周の 規制を行っているためパ リ のない又は少ない綺麗な接続状態を実現 する こ と ができ る。 The connection of a pair of plastic tubes whose ends are sealed opens the end of the plastic tube by removing the sealed end by moving the linear heating element in the cross direction, and at least this opening The ends are heated in a non-contact manner, and then a pair of plastic tubes are moved in the opposite direction until the opening ends contact and weld. With the use of contact-type heating, the conventional technology Since disposable parts are not required, and the outer periphery is regulated by a molding tool or the like during welding, a clean connection state with or without pallets can be realized.
この発明によれば、 それぞれが一端で封止され、 内部に液体を有 する一対のプラスチックチューブを接続するべく 処理する方法にお いて、 それぞれのプラスチッ クチューブを封止端部に近接した部位 において扁平にク ラ ンプしつつク ランプ部に対し流体を封止端部か ら離間側に移行させる と共に、 ク ラ ンプ部よ り封止端部側において プラスチッ クチューブを軸線方向に綮張し う る よ う に保持し、 線状 発熱体と プラスチッ クチューブと を相対的に交差方向に移動させプ ラスチッ クチューブを切断する こ と によ り ク ランプ部よ り 封止端部 側のプラスチックチューブの部分を切除する と共にプラスチック チ ユ ーブの封止端部を開 口 させ、 一対のプラスチッ ク チューブの少な く と も開 口端面を非接触的に加熱し、 一対のプラスチッ ク チューブ を軸線方向に対向 して位置させた状態においてプラスチッ クチュー ブの外周を規制しつつ軸線方向に相互に近接する方向に移動させて. 一対のプラスチック チューブの加熱された開口端面同士を突き 当て る こ と によ り 開口端面同士を融着せしめる方法が提供される。  According to the present invention, in a method of connecting a pair of plastic tubes each having one end sealed and having a liquid therein, the respective plastic tubes are flattened at a portion adjacent to the sealed end. While the fluid is being clamped to the clamp, the fluid is transferred from the sealed end to the side away from the sealed end, and the plastic tube is axially stretched at the sealed end from the clamp. The plastic tube is cut off by moving the linear heating element and the plastic tube relatively in the cross direction to cut the plastic tube. At the same time, the sealed end of the plastic tube is opened, and at least the open end surfaces of the pair of plastic tubes are heated in a non-contact manner. With the pair of plastic tubes facing each other in the axial direction, the plastic tubes are moved in a direction approaching each other while regulating the outer periphery of the plastic tubes. The heated open end faces of the pair of plastic tubes A method of fusing the open end faces to each other by abutting them is provided.
この発明によれば、 プラスチックチューブを切断するべく 処理す る装置であって、 線状発熱体と 、 プラスチックチューブを長手方向 に緊張させつつ同方向に離間 した一対の部位間で扁平状にク ラ ンプ する ク ラ ンプ手段と よ り 成 り 、 ク ラ ンプ手段に近接させて前記線状 発熱体とプラスチッ クチューブと の交差方向移動によ り プラスチッ クチューブを溶融切断する こ と を装置が提供される。  According to the present invention, there is provided an apparatus for processing to cut a plastic tube, wherein the linear heating element and the pair of parts separated in the same direction while tensioning the plastic tube in the longitudinal direction are flattened. An apparatus is provided which comprises a clamp means for pumping and melts and cuts the plastic tube by moving the linear heating element and the plastic tube in the cross direction close to the clamp means. .
この発明によれば、 内部に液体を有したプラスチックチューブを 切断するべく 処理する装置であって、 線状発熱体と 、 プラスチッ ク チューブを長手方向に緊張させつつ同方向に離間 した一対の部位間 で扁平状にク ランプする ク ランプ手段と 、 ク ランプ間の液体をク ラ ンプ部の外側におけるプラスチック チューブの部位に移行せしめる 手段と よ り 成 り 、 ク ランプ手段によ る ク ラ ンプ部間において前記線 状発熱体と プラスチックチューブと を交差方向に相対移動させる こ と によ り プラスチッ クチューブを溶融切断する こ と を装置が提供さ れる。 According to the present invention, there is provided an apparatus for processing a plastic tube having a liquid therein, between a linear heating element and a pair of parts separated in the same direction while tensioning the plastic tube in the longitudinal direction. And a means for transferring the liquid between the clamps to a portion of the plastic tube outside the clamp section, and the clamp section is clamped by the clamp means. The present invention provides an apparatus for melting and cutting a plastic tube by relatively moving the linear heating element and the plastic tube in a cross direction.
プラスチッ クチューブの内部には液体が含まれていても、 移行手 段はク ラ ンプ部間の液体を封止端部よ り 離間側に移動 ' 排除する よ う に作用する。 そのため、 切断部には液体が残存せず、 線状発熱体 によ るプラスチッ ク チューブの切断時にその漏洩や熱によ る蒸発が なく 、 衛生的な環境を長期にわた り 保持する こ と ができる。  Even if liquid is contained inside the plastic tube, the transfer means acts to move and remove the liquid between the clamps away from the sealing end. As a result, no liquid remains in the cut portion, no leakage or evaporation due to heat occurs when the plastic tube is cut by the linear heating element, and a hygienic environment can be maintained for a long time. it can.
内部に液体が含まれているプラスチッ クチューブの接続に際して は溶着部の周囲を熱収縮プラスチッ ク フィルムで包囲せしめる こ と ができ、 これによ り 溶着部を補強し、 プラスチッ クチューブの接続 をよ り 完全にする こ とができ る。  When connecting a plastic tube that contains liquid inside, the periphery of the welded part can be surrounded by a heat-shrinkable plastic film, which reinforces the welded part and makes the connection of the plastic tube more complete. It can be
この発明によれば、 プラスチッ クチューブの切断端部を封止する ベく 処理する装置であって、 プラスチッ クチューブをその切断端部 を開 口 させた状態でその開 口部に近接して扁平状にク ランプする ク ランプ手段と 、 プラスチックチューブの少なく と も開口端よ り 臨ま れる 内周面を非接触式に溶融状態に至るまで加熱する加熱手段と 、 プラスチッ クチューブ端部を外周側よ り 圧潰する よ う に保持する保 持手段と を備え、 プラスチックチューブの開口端における対向溶融 内周面を密着に至らせるべく 保持し、 プラスチッ クチューブの切断 端部を封止する こ と を装置が提供される。  According to the present invention, there is provided a device for sealing a cut end of a plastic tube, wherein the plastic tube is flattened close to the open end of the plastic tube with the cut end opened. Clamping means for clamping, heating means for heating at least the inner peripheral surface of the plastic tube facing the open end until it reaches a molten state, and crushing the end of the plastic tube from the outer peripheral side And a holding means for holding the plastic tube in such a manner that the inner peripheral surface of the opposite end of the plastic tube at the open end is brought into close contact with the plastic tube and the cut end of the plastic tube is sealed. .
プラスチッ クチューブを端部が開 口する よ う にク ランプし、 開 口 端よ り その内面を非接触式に加熱し、 加熱内周面を密着する よ う に プラスチッ クチューブを扁平にする こ と でプラスチックチューブの 切断端部の封を行 う こ とができ る。 The plastic tube is clamped so that the end is open, the inner surface is heated in a non-contact manner from the open end, and the plastic tube is flattened so that the heated inner peripheral surface is in close contact. Plastic tube The cut end can be sealed.
この発明によれば、 一対のプラスチッ クチューブの切断端面を接 続するべく 処理する装置であって、 一対のプラスチッ クチューブを 切断端面に近接した部位が扁平状と な り かつ端面は実質的に円形に 開口する よ う にク ラ ンプする ク ランプ手段と 、 一対のプラスチッ ク チューブの少なく と も開口端面を非接触的に溶融状態に至るまで加 熱する加熱手段と、 プラスチッ クチューブの外周を規制する規制手 段と を備え、 プラスチックチューブの加熱された開 口端面を軸線方 向に対向 させた状態でそれぞれのプラスチッ クチューブをその外周 を規制 しつつ相互に接近する方向に移動させる こ と によ り 対向 した 開口端面同士を当接 · 溶着させる こ と を装置が提供される。  According to the present invention, there is provided an apparatus for processing a pair of plastic tubes so as to connect the cut end surfaces thereof, wherein a portion of the pair of plastic tubes close to the cut end surface is flat and the end surfaces are substantially circular. Clamping means for clamping so as to open, heating means for heating at least the open end faces of the pair of plastic tubes until they reach a molten state, and regulation for regulating the outer circumference of the plastic tube The plastic tubes are opposed to each other by moving the plastic tubes in a direction approaching each other while restricting the outer circumference with the heated open end faces of the plastic tubes facing the axial direction. An apparatus is provided for abutting and welding the opened end faces to each other.
プラスチッ クチューブをその封止端に近接してク ランプし、 ク ラ ンプ部に近接してプラスチックチューブの少なく と も開口端を非接 触的に加熱し、 プラスチッ クチューブの外周を規制 しつつプラスチ ックチューブの端部を接近方向に移動させる こ と によ り溶融した開 口端が突当溶着される こ と によ り プラスチッ クチューブの接続を行 う こ と ができ る。  The plastic tube is clamped close to the sealing end, and at least the open end of the plastic tube is heated in a non-contact manner close to the clamp to regulate the outer circumference of the plastic tube while controlling the outer circumference of the plastic tube. The plastic tube can be connected by moving the end in the approaching direction so that the molten open end is abutted and welded.
この発明によれば、 プラスチッ ク チューブの端部を封止するべく 処理する装置であって、 緊張状態のプラスチックチューブを長手方 向に離間 した一対の部位にて扁平になる よ う に外側からク ランプす る ク ラ ンプ手段と、 線状発熱体と 、 一対のク ラ ンプ部間において線 状発熱体と プラスチッ クチューブと相対的交差方向移動によ り それ ぞれのク ランプ手段に近接した部位においてプラスチックチューブ を溶融状態下で切断する切断手段と 、 切断端よ り 臨まれるプラスチ ックチューブの少な く と も内周部分を非接触的に加熱する加熱手段 と、 プラスチックチューブを外側から圧潰する こ と によ り 加熱内周 部分同士を融着に至ら しめ、 これによ り液体収容部まで延びるブラ スチッ クチューブの端部を封止する封止手段と を具備したこ と を装 置が提供される。 According to the present invention, there is provided an apparatus for treating an end of a plastic tube so as to seal the end of the plastic tube, wherein the tensioned plastic tube is closed from the outside so as to be flat at a pair of portions separated in the longitudinal direction. The clamp means to be ramped, the linear heating element, and a portion of the linear heating element and the plastic tube between the pair of clamp sections which are moved closer to the respective clamp means by moving in a direction crossing relative to the linear heating element and the plastic tube. Cutting means for cutting the plastic tube in a molten state, heating means for contactlessly heating at least the inner peripheral portion of the plastic tube facing the cut end, and crushing the plastic tube from outside. As a result, the inner peripheral portions of the heated portions are fused to each other, whereby the brass extending to the liquid storage portion is formed. And a sealing means for sealing the end of the stick tube.
ク ラ ンプ手段は緊張状態のプラスチックチューブを長手方向に離 間 した一対の部位にて扁平になる よ う に外側から ク ラ ンプし、 切断 手段は線状発熱体をプラスチッ クチューブと で相対的に交差方向に 移動させる こ と によ り プラスチッ ク チューブの切断を行い、 加熱手 段は、 切断端よ り 臨まれる プラスチッ クチューブの少なく と も内周 面を非接触的に加熱し、 封止手段は、 非接触加熱を受けたプラスチ ックチューブを外側から圧潰する こ と によ り 対向内周面を溶着し、 これによ り プラスチックチューブの端部を封止を行う こ と ができ る こ の発明によれば、 内部に液体を有したプラスチッ クチューブの 端部を封止するべく 処理する装置であって、 プラスチッ クチューブ を長手方向に緊張させて同方向に離間 した一対の部位にて扁平にな る よ う に外側から ク ランプする ク ラ ンプ手段と 、 ク ラ ンプ部間の液 体をク ランプ部の外側におけるプラスチックチューブの部位に移行 せしめる手段と、 線状発熱体と、 一対のク ラ ンプ部間においてブラ スチッ クチューブと線状発熱体と の交差方向移動によ り ク ランプ手 段の間においてプラスチッ クチューブを溶融状態下で切断する切断 手段と 、 切断端よ り 臨まれるプラスチックチューブの少なく と も内 周部分を非接触的に加熱する加熱手段と、 プラスチッ クチューブを 外側から圧潰する こ と によ り 加熱内周部分同士を融着に至ら しめ、 これによ り 液体収容部まで延びるプラスチッ クチューブの端部を封 止する封止手段と を具備したこ と を装置が提供される。  Clamping means clamps the tensioned plastic tube from the outside so that it becomes flat at a pair of parts spaced apart in the longitudinal direction, and cutting means relatively moves the linear heating element with the plastic tube. By moving the plastic tube in the cross direction, the plastic tube is cut, and the heating means heats at least the inner peripheral surface of the plastic tube, which faces the cut end, in a non-contact manner. In this invention, the non-contact heated plastic tube is crushed from the outside to weld the opposed inner peripheral surfaces, thereby sealing the end of the plastic tube. According to the device, a plastic tube having a liquid therein is treated to seal an end of the plastic tube, and the plastic tube is tensioned in a longitudinal direction and separated in the same direction. A clamp means for clamping from the outside so as to be flat at the paired portions, a means for transferring the liquid between the clamp portions to a portion of the plastic tube outside the clamp portion, and a line. Cutting means for cutting the plastic tube in a molten state between the clamping means by the crosswise movement of the plastic tube and the linear heating element between the pair of clamps, and cutting Heating means for heating at least the inner peripheral portion of the plastic tube facing the end in a non-contact manner, and crushing the plastic tube from the outside to cause fusion of the heated inner peripheral portions to each other. And a sealing means for sealing an end of the plastic tube extending to the liquid container.
この発明によれば、 それぞれが一端で封止された一対のプラスチ ックチューブを接続するべく 処理する装置において、 一対のプラス チッ クチューブをその封止端部に近接した部位において扁平にク ラ ンプする手段と、 ク ラ ンプ部から延びてく るプラスチックチューブ の封止端部を軸線方向において緊張し う る よ う に保持する保持手段 と 、 線状発熱体と、 プラスチッ クチューブと線状発熱体と を交差方 向に相対移動させる こ と によ り それぞれのク ラ ンプ部に近接した部 位においてプラスチックチューブを溶融状態下で切断する切断手段 と 、 一対のプラスチッ クチューブの少なく と も開 口端を非接触的に 加熱する加熱手段と 、 一対のプラスチッ クチューブをその外周を規 制する外周規制手段と、 一対のプラスチッ クチューブの加熱された 対向端を軸線方向に対向させた状態において前記外周規制手段によ り 外周を規制 しつつ一対のプラスチッ クチューブを軸線方向に相互 に近接する方向に移動せしめる こ と に よ り プラスチックチューブの 開 口端同士を溶着接続せしめる接続手段と を具備したこ と を装置が 提供される。 According to the present invention, in a device for processing to connect a pair of plastic tubes, each of which is sealed at one end, means for flatly clamping the pair of plastic tubes at a portion close to the sealed end portion And a plastic tube extending from the clamp A holding means for holding the sealed end portion of the sealing member so as to be tensioned in the axial direction; a linear heating element; and a plastic tube and the linear heating element which are relatively moved in a crossing direction. Cutting means for cutting the plastic tube in a molten state at a position close to the clamp portion of the plastic tube, heating means for heating at least the open ends of the pair of plastic tubes in a non-contact manner, and a pair of plastic tubes Outer peripheral regulating means for regulating the outer periphery of the pair of plastic tubes, and in a state where the heated opposite ends of the pair of plastic tubes are axially opposed to each other, the outer peripheral regulating means regulates the outer periphery to move the pair of plastic tubes in the axial direction. A connecting hand that welds the open ends of the plastic tubes by moving them in a direction closer to each other. And this provided with the winding devices.
ク ラ ンプ手段は一対のプラスチッ ク チューブをその封止端部が軸 線方向において対向する よ う にかつ封止端部に近接した部位におい て扁平にク ラ ンプし、 保持手段はク ラ ンプ部から延びてく るプラス チッ クチューブの封止端部を軸線方向において緊張し う る よ う に保 持し、 切断手段はプラスチッ クチューブと線状発熱体と を相対的に 交差方向に移動させる こ と によ り それぞれのク ラ ンプ部に近接した 部位においてプラスチックチューブを溶融状態下で切断し、 加熱手 段は一対のプラスチッ クチューブの少なく と も開 口端を非接触的に 加熱し、 外周規制手段は一対のプラスチックチューブをその外周を 規制 し、 接続手段は、 前記外周規制手段によ り 外周が規制された一 対のプラスチックチューブを軸線方向に相互に近接する方向に移動 せしめる こ と によ り プラスチッ クチューブの加熱された開 口端同士 の溶着接続を行う こ とができ る。  The clamping means flatly clamps the pair of plastic tubes so that their sealing ends face each other in the axial direction and at a position close to the sealing end, and the holding means clamps the pair of plastic tubes. The sealing end of the plastic tube extending from the section is held so as to be tensioned in the axial direction, and the cutting means moves the plastic tube and the linear heating element relatively in the cross direction. As a result, the plastic tube is cut in a molten state at a position close to each clamp part, and the heating means heats at least the open ends of the pair of plastic tubes in a non-contact manner, thereby controlling the outer periphery. Regulates the outer circumference of the pair of plastic tubes, and the connecting means connects the pair of plastic tubes whose outer circumference is regulated by the outer circumference regulating means in the axial direction Ru can and this performing the heated open mouth end each other by Ri plastic Kuchubu to and this for moving in a direction coming close to each other welded connections.
この発明によれば、 それぞれが一端で封止され、 内部に流体を有 した一対のプラスチックチューブを接続するべく 処理する装置にお いて、 一対のプラスチックチューブをその封止端部に近接した部位 において扁平にク ラ ンプする手段と 、 封止端から ク ラ ンプ部までの 液体を封止端から離間側に移行させる手段と 、 ク ランプ部から延び てく るプラスチッ クチューブの封止端部を軸線方向において緊張し う る よ う に保持する保持手段と、 線状発熱体と 、 プラスチックチュ 一ブと線状発熱体と を交差する方向に相対移動させる こ と によ り そ れぞれのク ラ ンプ部に近接した部位においてプラスチックチューブ を溶融状態下で切断する切断手段と 、 一対のプラスチッ ク チューブ の少なく と も開 口端を非接触的に加熱する加熱手段と、 一対のブラ スチックチューブをその外周を規制する外周規制手段 と、 加熱され た開口端が対向位置した一対のプラスチック チューブを前記外周規 制手段内において軸線方向に相互に近接する方向に移動せしめる こ と によ り プラスチッ クチューブの開 口端同士を溶着接続せしめる接 続手段と を具備したこ と を装置が提供される。 According to the present invention, there is provided an apparatus for processing a pair of plastic tubes each of which is sealed at one end and has a fluid therein. Means for flatly clamping a pair of plastic tubes at a portion close to the sealing end, means for transferring liquid from the sealing end to the clamping part to a side away from the sealing end, The holding means for holding the sealing end of the plastic tube extending from the clamp portion so as to be tensioned in the axial direction, intersecting the linear heating element, and the plastic tube and the linear heating element Cutting means for cutting the plastic tube in a molten state at a position close to each clamp portion by moving the plastic tube in a relative direction, and at least an opening end of a pair of plastic tubes. Heating means for heating in a non-contact manner; outer circumference regulating means for regulating the outer circumference of the pair of plastic tubes; Connecting means for welding the plastic tube open ends to each other by moving the plastic tube in the direction of axial proximity to each other in the outer circumference regulating means. Provided.
プラスチックチューブの内部には液体が含まれている場合におい て、 移行手段はク ラ ンプ部に対し液体を封止端部よ り 離間側に移 動 · 排除する よ う に作用する。 そのため、 切断部には液体が残存せ ず、 線状発熱体によ るプラスチックチューブの切断時にその漏澳ゃ 熱によ る蒸発がな く 、 衛生的な環境を長期にわた り 保持する こ と が でき る。  When the liquid is contained in the plastic tube, the transfer means acts to transfer and remove the liquid to the clamp portion away from the sealed end. For this reason, no liquid remains in the cut portion, and when the plastic tube is cut by the linear heating element, there is no evaporation due to the leakage heat, and a sanitary environment is maintained for a long time. Can be done.
内部に液体が含まれるプラスチッ ク チューブの接続を行う 上記装 置において、 プラスチッ クチューブの溶着部の周囲を熱収縮プラス チック フィ ルムで包囲せしめる手段を設ける こ と ができ る。 これに よ り接続部を補強し、 プラスチックチューブのよ り 確実な接続を実 現する こ と ができ る。  In the above-described apparatus for connecting a plastic tube containing a liquid therein, means for surrounding the welded portion of the plastic tube with a heat-shrinkable plastic film may be provided. This reinforces the connection and achieves a more secure connection of the plastic tube.
この発明によれば、 プラスチックチューブの切断 · 封止及ぴ溶着 接続などの処理を行 う ための装置であって、 プラスチックチューブ を扁平にク ラ ンプするための離間 した一対のク ラ ンプ手段と、 一対 のク ランプ手段間に配置され、 それぞれのク ラ ンプ手段から延びて く るプラスチックチューブを長手方向に緊張するべく 保持する保持 手段と、 線状発熱体と、 各ク ラ ンプ手段に近接して線状発熱体と プ ラスチック チューブと を相対的に交差方向に移動させプラスチッ ク チューブを溶融状態下で切断する切断手段と 、 プラスチッ クチュー ブの内周及び端面を非接触的に加熱する加熱手段 と を具備したこ と を装置が提供される。 According to the present invention, there is provided an apparatus for performing processing such as cutting, sealing and welding connection of a plastic tube. And a pair of spaced clamp means for flattening the clamp, and a plastic tube extending from each clamp means is held between the clamp means so as to be stretched in the longitudinal direction. Holding means, a linear heating element, and a cutting means for moving the linear heating element and the plastic tube in the direction of crossing relatively close to each clamp means to cut the plastic tube in a molten state. And a heating means for heating the inner periphery and the end face of the plastic tube in a non-contact manner.
腹膜透析な どにおける患者と透析液パッ ク と を接続するプラスチ ッ クチューブの切断の如き場合は、 一対のク ラ ンプ手段は、 プラス チックチューブの長手方向における一対の離間した部位で外側から 扁平にク ラ ンプし、 切断手段は線状発熱体を交差方向に移動させる こ と によ り 一対のク ランプ部間においてそれぞれのク ランプ部に近 接してプラスチック チューブを溶融状態下で切断し、 加熱手段はそ れぞれの切断端よ り 臨まれるプラスチッ クチューブの內周及び端面 を非接触的に加熱し、 保持手段によ り プラスチッ クチューブを外側 から圧潰する こ と によ り 加熱内周部分同士を融着に至ら しめ、 これ によ り 患者からのプラスチッ クチューブの切断端部及び透析液パッ クからのプラスチッ クチューブの切断端部を無菌にて封止する こ と ができ る。 また、 腹膜透析の開始において、 患者からのプラスチッ クチューブの封止端と透析液バックからのプラスチッ クチューブの 封止端と を接続する場合は、 前記ク ラ ンプ手段は、 前記封止端を軸 線方向において対向する よ う に位置させ、 それぞれのプラスチッ ク チューブを封止端部に近接した部位において扁平にク ランプする と 共に、 保持手段はク ラ ンプ部よ り封止端部側においてプラスチッ ク チューブを軸線方向に緊張し う る よ う に保持し、 切断手段は線状発 熱体を交差方向に移動させる こ と によ り ク ラ ンプ部から延びるプラ スチッ クチューブを溶融状態下で切断する こ と によ り プラスチッ ク チューブの端部を開口 させ、 加熱手段によ り 軸線方向に対向 して位 置する一対のプラスチッ ク チューブの内周面及び端面の非接触的加 熱を行い、 一対のプラスチ ックチューブの加熱された開口端面同士 を当接にさせる こ と によ り 開口端面同士を融着せしめる。 この装置 は、 単独で、 プラスチッ ク チューブの切断 ' 封止、 並びに封止端部 同士の溶着の作業を行 う こ とができ、 患者自 らによ る腹膜透析にお ける作業の 自動化を行 う こ とができ、 また、 切断については溶融物 の付着の少ない線状発熱体を使用 し、 封止及び接続作業における加 熱においては非接触型であるために従来技術における使い捨ての ゥ エーハの使用 と比較して腹膜透析作業における ランニングコス ト の 低減を図る こ とができ る。 また、 非接触型の加熱装置は封止作業と 接続作業と で共用 しているため、 装置の低コス ト化に寄与させる こ と ができ る。 In the case of cutting a plastic tube that connects a patient and a dialysate pack in peritoneal dialysis or the like, the pair of clamping means is flattened from the outside at a pair of spaced apart portions in the longitudinal direction of the plastic tube. The clamp is cut and the cutting means moves the linear heating element in the cross direction, thereby cutting the plastic tube in a molten state between the pair of clamps in close proximity to each clamp and heating. The means heats the outer circumference and the end face of the plastic tube facing from each cut end in a non-contact manner, and crushes the plastic tube from the outside by the holding means. The plastic tube from the patient and the plastic tube from the dialysate pack. Ru can and child to seal the under sterile. Further, when connecting the sealed end of the plastic tube from the patient to the sealed end of the plastic tube from the dialysate bag at the start of peritoneal dialysis, the clamp means is connected to the axis of the sealed end. The plastic tube is clamped flat at the part close to the sealing end, and the holding means is made of plastic at the sealing end side of the clamp part. The tube is held so as to be tensioned in the axial direction, and the cutting means is a plastic extending from the clamp by moving the linear heating element in the cross direction. By cutting the plastic tube in a molten state, the ends of the plastic tube are opened, and the inner peripheral surface and the end surface of the pair of plastic tubes that are positioned to face each other in the axial direction by heating means. Non-contact heating is performed to bring the heated open end faces of the pair of plastic tubes into contact with each other, thereby fusing the open end faces. This device is capable of cutting and sealing plastic tubing and welding the sealed ends independently, and automates the operation of peritoneal dialysis by the patient. In addition, a linear heating element with little adhesion of the melt is used for cutting, and a non-contact type is used for heating in the sealing and connection work. The running cost in peritoneal dialysis work can be reduced as compared with use. In addition, since the non-contact type heating device is shared between the sealing operation and the connection operation, it can contribute to lowering the cost of the device.
上記発明において、 前記加熱手段は被加熱部に照射される赤外線 を発生する赤外線発生手段 とする こ と ができ る。 赤外線によ る至近 距離での加熱によ り 省エネルギで効率的な加熱が行われ、 しかも無 接触であるため無菌状態の維持が容易 と なる。 また、 赤外線発生手 段は電熱式ヒータ とする こ とができ る。  In the above invention, the heating means may be an infrared ray generating means for generating an infrared ray irradiated to the heated portion. Heating at a short distance by infrared rays enables energy-saving and efficient heating, and since it is contactless, it is easy to maintain a sterile condition. Also, the means for generating infrared rays can be an electric heater.
上記発明において、 溶着時のプラスチックチューブの外周を規制 する規制手段を更に具備せしめる こ と ができ る。 前記外周規制手段 は合体時にプラスチッ ク チューブの外径に見合った内径の筒状の空 間を形成する割型とする こ とができ る。  In the above invention, a regulating means for regulating the outer periphery of the plastic tube at the time of welding can be further provided. The outer periphery restricting means may be a split mold which forms a cylindrical space having an inner diameter corresponding to the outer diameter of the plastic tube at the time of joining.
上記発明において、 プラスチッ クチューブは内部に液体を有したも のである場合において、 保持手段によ り 保持されたプラスチックチ ユ ーブの部位における液体をク ランプ部の外側におけるプラスチッ クチューブの部位に移行せしめる手段を具備せしめる こ とができ る , プラスチッ クチューブの内部には液体が含まれているが、 移行手段 は液体を ク ラ ンプ部の外側におけるプラス チ ッ ク ラブの部位に移 動 ' 排除する よ う に作用する。 そのため、 プラスチッ クチューブの 切断部には液体が残存せず、 線状発熱体によ るプラスチックチュー ブの切断時にその漏洩や熱による蒸発がなく 、 衛生的な環境を長期 にわた り 保持する こ と ができ る。 In the above invention, when the plastic tube has a liquid inside, the liquid in the portion of the plastic tube held by the holding means is transferred to the portion of the plastic tube outside the clamp portion. Means can be provided, The liquid is contained inside the plastic tube, but the transfer means acts to transfer and remove the liquid to the plastic club site outside the clamp. Therefore, no liquid remains in the cut portion of the plastic tube, there is no leakage or evaporation due to heat when the plastic tube is cut by the linear heating element, and a hygienic environment is maintained for a long time. Can be done.
前記移行手段はプラスチッ クチューブを把持する一対のク ラ ンプ 部材と、 ク ラ ンプ部材を横移動させる手段と を具備する こ とができ る。 ク ラ ンプ部材を横移動させる こ と によ り ク ラ ンプを兼用 させつ つ切断部からの液体の排除が可能と なる。  The transition means can include a pair of clamp members for holding the plastic tube, and means for laterally moving the clamp member. By laterally moving the clamp member, it is possible to remove the liquid from the cut portion while also using the clamp.
前記移行手段はプラスチッ クチューブを把持する一対のローラ と ローラを回転させる手段と を具備する こ と ができ る。 ローラの回転 によ り液体の排除を行っているためローラに対するチューブの姿勢 にかかわらず液体の確実な移動 · 排除が可能と なる。  The transfer means may include a pair of rollers for holding the plastic tube and means for rotating the rollers. Since the liquid is removed by rotating the roller, the liquid can be reliably moved and removed regardless of the position of the tube relative to the roller.
前記移行手段は底面がプラスチック チューブに当接する実質的に断 面 L形状の一対のク ランプ部材を具備せしめる こ と ができ る。 断面 L 形状のク ラ ンプ部材によ り プラスチッ クチューブの広範囲な部分 において液体の排除が単なる ク ラ ンプ作動のみで可能であ り 、 構成 を単純化しコス トダウンを実現する こ とができ る。 図面の簡単な説明 The transition means may include a pair of clamp members having a substantially L-shaped cross section whose bottom surface abuts the plastic tube. Due to the clamp member having the L-shaped cross section, liquid can be removed by a simple clamp operation in a wide range of the plastic tube, thereby simplifying the configuration and realizing cost reduction. BRIEF DESCRIPTION OF THE FIGURES
図 1 A〜図 1 Eは腹膜透析における一連の手順を概略的に示す図 である。  1A to 1E schematically show a series of procedures in peritoneal dialysis.
図 2 はプラスチッ クチューブの封止部を示す斜視図である。 図 3 はプラスチッ クチューブの溶着部を示す斜視図である。 図 4 A〜図 4 Hはプラスチックチューブの切断 · 封止作業におけ る一連の手順を示す図である。 図 5 はク ランプ機構の概略構成を示す斜視図である。 FIG. 2 is a perspective view showing a sealing portion of the plastic tube. FIG. 3 is a perspective view showing a welded portion of the plastic tube. FIGS. 4A to 4H are views showing a series of steps in cutting and sealing the plastic tube. FIG. 5 is a perspective view showing a schematic configuration of the clamp mechanism.
図 6 Aから図 6 Hはプラスチッ ク チューブの接続作業における一 連の手順を示す図である。  FIG. 6A to FIG. 6H are views showing a series of steps in the connection operation of the plastic tube.
図 7 Aは整形型の開放状態の概略斜視図を示す。  FIG. 7A shows a schematic perspective view of a shaped open state.
図 7 B は整形型の閉鎖状態の概略斜視図を示す。 FIG. 7B shows a schematic perspective view of a shaped closed state.
図 8 A〜図 8 Dは図 4 A〜図 4 D と 同様であるが、 ク ラ ンプによ る しごき (横移動) によ る液体の排除を行う変形例を概略的に示す 図である。  FIGS. 8A to 8D are the same as FIGS. 4A to 4D, but schematically show a modification in which the liquid is removed by ironing (lateral movement) by a clamp. .
図 9 は第 2 の実施形態における ク ラ ンプ機構の概略的側面図であ る。  FIG. 9 is a schematic side view of the clamp mechanism according to the second embodiment.
図 1 0 は図 9 のク ラ ンプ機構の概略的平面図である。  FIG. 10 is a schematic plan view of the clamp mechanism of FIG.
図 1 1 A〜図 1 1 Hは第 2 実施形態におけるプラスチッ クチュー ブの切断 · 封止のための一連の手順を示す図である。  FIGS. 11A to 11H are views showing a series of procedures for cutting and sealing the plastic tube in the second embodiment.
図 1 2 A〜図 1 2 Hは第 2実施形態におけるプラスチッ クチュー ブの接続作業における一連の手順を示す図である。  FIGS. 12A to 12H are views showing a series of procedures in a plastic tube connecting operation in the second embodiment.
図 1 3 は第 3 の実施形態における ク ランプ機構の概略的側面図で める。  FIG. 13 is a schematic side view of a clamp mechanism according to the third embodiment.
図 1 4 は図 1 3 のク ラ ンプ機構の概略的平面図である。  FIG. 14 is a schematic plan view of the clamp mechanism of FIG.
図 1 5 A〜図 1 5 Hは第 3 の実施形態におけるプラスチッ クチュ ーブの切断 · 封止のための一連の手順を示す図である。  FIGS. 15A to 15H are views showing a series of procedures for cutting and sealing the plastic tube in the third embodiment.
図 1 6 A〜図 1 6 Hは第 3 の実施形態におけるプラスチックチュ ーブの接続作業における一連の手順を示す図である。  FIGS. 16A to 16H are views showing a series of procedures in a connection operation of a plastic tube in the third embodiment.
図 1 7 A及ぴ図 1 7 B はプラスチッ クチューブの接続部を熱収縮 チューブで被覆する変形実施形態における型開き状態及び型閉鎖状 態をそれぞれを示す概略図である。  FIG. 17A and FIG. 17B are schematic views respectively showing a mold open state and a mold closed state in a modified embodiment in which a connection portion of a plastic tube is covered with a heat-shrinkable tube.
図 1 8 は接続作業完了後のプラスチックチューブの接続部の模式 的断面図である。 発明を実施するための最良の形態 Figure 18 is a schematic cross-sectional view of the connection part of the plastic tube after the connection work is completed. BEST MODE FOR CARRYING OUT THE INVENTION
一般的説明  General description
図 1 A〜図 1 E この発明の実施形態における方法及び装置によ る 腹膜透析の方法を概略的に示してお り 、図 1 Aは透析作業中を示し、 患者 1 の腹腔と透析液パッ ク 2 と の間をプラスチックチューブ 3 が 延びてお り 、 透析液パッ ク 2 からの透析液はプラスチックチューブ 3 を介して患者 1 の腹腔に導入される。 図示しないが、 透析液バッ ク 2 から排液バッ クへの切替手段も設け られ、 腹腔からプラスチッ ク チューブ 3 を介して排液パックの排液が行われる よ う になつてい る。  1A to 1E schematically show a method of peritoneal dialysis by the method and apparatus according to the embodiment of the present invention, wherein FIG. A plastic tubing 3 extends between the dialysis fluid 2 and the dialysate from the dialysis fluid pack 2 to the peritoneal cavity of the patient 1 via the plastic tubing 3. Although not shown, a switching means for switching from the dialysate back 2 to the drain back is also provided so that the drain pack can be drained from the abdominal cavity via the plastic tube 3.
透析作業は通常であれば 3 0分程度で完了 し、 図 1 B に示す作業 装置 1 0 0 によ り プラスチックチューブ 3 の切離し作業が行われる , 後述の通 り 、 この切離し作業に際しては、 先ず、 プラスチッ クチュ ーブ 3 を一対の離間 した部位にてク ラ ンプする こ と によ り 患者 1 の 腹腔及び透析液パッ ク 2 からの液漏れを防止しつつ電熱線による切 断を行い、 次いで、 プラスチッ クチューブ 3 の開 口 した切断端の内 周面を赤外線などによ り 非接触的に加熱し、 その後外側よ り プラス チッ クチューブを圧潰する こ と によ り 対向内周面を相互に密着する こ と によ り 平坦状に封止する。 図 1 B において 5 , 5 'はこのよ う に してプラスチッ ク チューブ 3 に形成された封止端を示す。 (封止端 5 , 5 の形状については図 2 を参照。) その後、 使用済みと なった透 祈液パッ ク 2 は廃棄する こ と になる。 図 1 Cは透析作業の完了状態 を示し、 患者 1 の腹腔からは端部 5 が封止されたプラスチッ クチュ ーブ 3 が延びている。  The dialysis work is normally completed in about 30 minutes, and the plastic tube 3 is separated by the working device 100 shown in FIG.1B.As will be described later, first, in this separating work, Then, the plastic tube 3 is clamped at a pair of spaced-apart sites to prevent leakage from the abdominal cavity of the patient 1 and the dialysate pack 2 while performing cutting by a heating wire. The inner peripheral surface of the opened cut end of the plastic tube 3 is heated in a non-contact manner by infrared rays or the like, and then the plastic tubes are crushed from the outer side to bring the opposing inner peripheral surfaces into close contact with each other. By doing so, it is sealed flat. In FIG. 1B, reference numerals 5 and 5 'denote sealing ends formed in the plastic tube 3 in this manner. (Refer to Fig. 2 for the shape of the sealing ends 5 and 5.) After that, the used permeation liquid pack 2 will be discarded. FIG. 1C shows a completed state of the dialysis work, and a plastic tube 3 whose end 5 is sealed extends from the abdominal cavity of the patient 1.
次回の透析作業は 5〜 6 時間経過後に行われる。 図 1 Dのよ う に 新規な透析パック 2 Aが準備され、 透析パッ ク 2 Aから延ぴてく る プラスチッ ク チューブ 3 Aを患者 1 からのプラスチッ クチューブ 3 に接続する作業が行われる。 後述の よ う に、 作業装置 1 0 0 によ り プラスチッ ク チューブ 3 , 3A の封止端 5, 5A の手前をク ランプする こ と によ り 液漏れを防止しつつ封止端部 5, 5A を電熱線によって切 除し、 これによ り 形成された開後端部を赤外線によって非接触的に 加熱し、 加熱された開 口端部を突当式に溶着する こ と によ り プラス チッ クチューブ 3, 3A の溶着を行う 。 このよ う に して形成されたプ ラスチッ クチューブ 3, 3A間の熱溶着部を図 1 Eの 4 (図 3 も参照) にて示す。 The next dialysis work will be performed after 5-6 hours. As shown in Fig. 1D, a new dialysis pack 2A is prepared and extends from dialysis pack 2A. The operation of connecting the plastic tube 3A to the plastic tube 3 from the patient 1 is performed. As will be described later, the working device 100 clamps the sealing ends 5, 5A of the plastic tubes 3, 3A in front of the sealing ends 5, 5A, thereby preventing liquid leakage while preventing leakage of the liquid. 5A is cut off with a heating wire, the open end formed by this is heated in a non-contact manner by infrared rays, and the heated open end is positively welded by welding. Weld the tip tubes 3 and 3A. The heat-welded portion between the plastic tubes 3 and 3A thus formed is shown in Fig. 1E-4 (see also Fig. 3).
再び、 5 ~ 6 時間経過する と次回の腹膜透析作業が行われるがそ のと き図 1 Aから図 1 Eにおいて既に説明の手順が再び繰り 返され る こ と になる。 第 1 実施形態  Again, after 5 to 6 hours, the next peritoneal dialysis operation is performed, at which time the steps already described in FIGS. 1A to 1E will be repeated again. First embodiment
以下この発明の実施形態と しての腹膜透析中におけるプラスチッ クチューブの切離し及ぴ接続作業について図 4 A〜図 7 B を参照 し てよ り 詳細に説明する。 作業装置 1 0 0 は、 基本的には、 プラスチ ックチューブ 3 の長手方向に同軸状態に配置された一対のク ラ ンプ 機構 7 (図 5 参照) 及び 8 と、 一対の電熱線カ ツ タ 9 と、 赤外線加 熱器 1 0 と 、 補助ク ラ ンプ機構 1 1 と 、 成形型 1 4 (図 7 A及び図 7 B参照) から構成される。  Hereinafter, the operation of disconnecting and connecting the plastic tube during peritoneal dialysis as an embodiment of the present invention will be described in more detail with reference to FIGS. 4A to 7B. The working device 100 basically includes a pair of clamp mechanisms 7 (see FIG. 5) and 8 arranged coaxially in the longitudinal direction of the plastic tube 3 and a pair of heating wire cutters 9. , An infrared heater 10, an auxiliary clamp mechanism 11, and a molding die 14 (see FIGS. 7A and 7B).
ク ラ ンプ機構 7及ぴ 8 はこの発明のク ラ ンプ手段を構成し、 その 各々が同軸方向に前後に (図 4 Aの矢印 a の方向に) ある程度の距 離移動可能に構成される。 図 5 に示すよ う にク ラ ンプ機構 7 は一対 のク ラ ンプ部材 7- 1, 7-2 を備えてお り 、 ク ランプ部材 ァ- 1 , 7-2 は その各々が上下方向 (図 5 の矢印 b ) に移動可能に構成される。 そ して、 ク ラ ンプ部材 7 - 1 , 7-2 はク ラ ンプ面と なる下端面、 上端面が それぞれ平坦面状をな してお り 、 ク ランプ部材 7 - 1, 7- 2 を相互に接 近する方向に移動させる こ と によ り プラスチッ クチューブ 3 は図 5 に示すよ う に平坦状に圧潰される。 そして、 切断端 6 よ り 幾分 (数 ミ リ メ一トル) 手前をク ラ ンプさせる こ と によ り 切断端 6 を弾性復 帰によ り ほぼ円形に開口 させる こ と ができ る。 また、 ク ラ ンプ部材 7- 1, 7-2 を相互に離間する方向に移動させる こ と によ り プラスチッ クチューブ 3 のク ラ ンプは解除される。 ク ランプ機構 8 はク ランプ 機構 7 と 同一の構造を備えてお り 、 プラスチッ クチューブ 3 の選択 的なク ランプ及び解除が可能である。 The clamp mechanisms 7 and 8 constitute the clamp means of the present invention, each of which is configured to be movable a certain distance back and forth in the coaxial direction (in the direction of arrow a in FIG. 4A). As shown in FIG. 5, the clamp mechanism 7 is provided with a pair of clamp members 7-1 and 7-2, and the clamp members -1 and 7-2 each have a vertical direction (see FIG. 5). It is configured to be movable to the arrow b) of 5. Then, the clamp members 7-1 and 7-2 have the lower end surface and the upper end surface which are the clamp surfaces. Each of them has a flat surface, and the plastic tube 3 is flattened as shown in Fig. 5 by moving the clamp members 7-1 and 7-2 in a direction approaching each other. Crushed. Then, the cut end 6 can be opened in a substantially circular shape by elastic reversion by clamping the cut end 6 somewhat (several millimeters) in front of the cut end 6. In addition, the clamp of the plastic tube 3 is released by moving the clamp members 7-1 and 7-2 away from each other. The clamping mechanism 8 has the same structure as the clamping mechanism 7, and the plastic tube 3 can be selectively clamped and released.
補助ク ラ ンプ機構 1 1 はこの発明の保持手段を構成し、 ク ラ ンプ 機構 7及ぴ 8 と 同様にク ラ ンプ面が平坦な上下のク ラ ンプ部材ょ り 構成され、 上下のク ランプ部材が相互に対向及ぴ離間する方向に移 動可能に構成される こ と はク ランプ機構 7 , 8 と 同様である。そ して、 赤外線加熱機 1 0 によ る加熱作業時に補助ク ラ ンプ機構 1 1 をブラ スチックチューブ軸線上の同軸位置から紙面に直交する方向等にお いて退避させるための直線駆動式若し く はレバー式の退避機構も図 示しないが設置されている。  The auxiliary clamp mechanism 11 constitutes the holding means of the present invention, and is composed of upper and lower clamp members having a flat clamp surface similarly to the clamp mechanisms 7 and 8, and the upper and lower clamp members. It is the same as the clamp mechanisms 7 and 8 that the members are configured so as to be movable in the direction facing and away from each other. Then, during the heating operation by the infrared heater 10, a linear drive type for retracting the auxiliary clamp mechanism 11 from the coaxial position on the plastic tube axis in a direction perpendicular to the paper surface or the like. Alternatively, a lever-type evacuation mechanism is installed although not shown.
電熱線カ ツタ 9 (図 4 C ) はこの発明の切断手段を構成し、 ニク ロ ム線や白金線やカ ンタル線やタ ングステン線な どの線状発熱体と その駆動手段と によ り構成する こ とができ る。 電熱線は通電する こ と によ り プラスチッ クチューブを構成する塩化ビニールやポ リ プロ ピ レンな どのプラスチッ ク素材の融点(200 °C付近)よ り はるか高温 の例えば 6 0 0〜8 0 0 °C程度に加熱される。 そ して、 電熱線カ ツ タ 9 をプラスチッ ク チューブ 3 と直交する方向 (紙面と直交する方 向) に移動させる こ と によ り プラスチックチューブ 3 を溶融切断す る こ とができる。 高温のニク ロ ム線や白金線によ り 鋭利な切断を行 う こ とができ る。 そのため、 溶融物の付着が長期にわたって無視し う るため、 相当な回数にわたってプラスチッ クチューブの切断を繰 返し的に行 う こ とができ る。 The heating wire cutter 9 (FIG. 4C) constitutes the cutting means of the present invention, and is composed of a linear heating element such as a nickel wire, a platinum wire, a kanta wire, a tungsten wire, and a driving means therefor. can do. When the heating wire is energized, it is much higher than the melting point (around 200 ° C) of the plastic material, such as vinyl chloride or polypropylene, that composes the plastic tube. Heated to about C. Then, the plastic tube 3 can be melt-cut by moving the heating wire cutter 9 in a direction perpendicular to the plastic tube 3 (a direction perpendicular to the paper surface). Sharp cutting can be performed with high-temperature nickel wire or platinum wire. Therefore, the adhesion of the melt is ignored for a long time. Therefore, the plastic tube can be repeatedly cut a considerable number of times.
電熱線はその径が細いほ ど良好な切れ味が得られるが余 り に細い 場合は寿命が短縮するため切れ味と耐久性と が適当に調和する よ う に線径は選定する必要があるが、 0. 2 mm程度の線径のもので十分良 好な結果を得る こ と ができた。 また電熱線の断面形状と しては通常 の円形はも と よ り 矩形でもそれ以外の異形断面のものでも よいこ と はも と よ り である。  The smaller the diameter of the heating wire, the better its sharpness can be obtained, but if it is too thin, its life will be shortened, so it is necessary to select the wire diameter so that the sharpness and durability are appropriately balanced. Sufficiently good results could be obtained with a wire diameter of about 0.2 mm. In addition, as for the cross-sectional shape of the heating wire, a normal circular shape may be originally a rectangular shape or another deformed cross-sectional shape.
赤外線加熱器 1 0 (図 4 E ) はこの発明の加熱手段を構成し、 こ の実施形態においては軸方向において反対方向に片持ちに延びる棒 状電気抵抗素子発熱体よ り 成る加熱部 1 2 , 12Aを備えてお り 、 こ の 加熱部 12, 12A をプラスチッ クチューブ 3 の切断端部を臨ませる よ う に位置させ、 加熱部 12 , 12A に通電する こ と によ り 赤熱に至ら し め、 赤外線を発生させる こ と によ り プラスチックチューブ 3 の切断 端部の非接触型加熱、 即ち、 輻射加熱を行う こ と ができ る。 非接触 型の加熱の採用によ り従来技術における接触式ゥエーハを採用 した 場合には回避し得ないプラスチック溶融物の付着がない利点がある , また、電気抵抗線によ り 構成される加熱部 12 , 12Aは通電時に 800 °C を超える高温と なるためその近傍に雑菌があってもそれば死滅せし められ、 電熱線 9 による切断時のプラスチッ クチューブ開 口端への 雑菌の進入を排除する。 そのため、 この実施形態における赤外線加 熱器 1 0 による非接触加熱は雑菌によ る感染防止の観点から優れた ものである。 また、 赤外線加熱器 1 0 は補助ク ラ ンプ機構 1 1 と機 械的な干渉が起こ らないよ う に紙面に直交する方向等に前後に移動 せしめる機構 (図示せず) が設けられ、 必要ない場合は退避位置し ている。  The infrared heater 10 (FIG. 4E) constitutes the heating means of the present invention, and in this embodiment, a heating section 12 composed of a rod-shaped electric resistance element heating element extending cantilevered in the opposite direction in the axial direction. , 12A, and the heating section 12, 12A is positioned so as to face the cut end of the plastic tube 3, and the heating section 12, 12A is energized to cause red heat. By generating infrared rays, non-contact heating of the cut end of the plastic tube 3, that is, radiant heating can be performed. Adoption of non-contact type heating has the advantage that there is no adhesion of plastic melt that cannot be avoided when using a contact type wafer in the conventional technology.In addition, a heating section composed of electric resistance wires 12 and 12A reach a high temperature exceeding 800 ° C when energized, so even if there are bacteria in the vicinity, they can be killed and the invasion of bacteria by the heating wire 9 into the opening end of the plastic tube is eliminated. I do. Therefore, the non-contact heating by the infrared heater 10 in this embodiment is excellent from the viewpoint of preventing infection by various bacteria. In addition, the infrared heater 10 is provided with a mechanism (not shown) for moving the infrared heater 10 back and forth in a direction perpendicular to the paper so as to prevent mechanical interference with the auxiliary clamp mechanism 11. If not, it is in the evacuation position.
成形型 1 4 (図 6 G ) はこの発明の外周規制手段を構成し、 ブラ スチックチューブの接続作業に使用 される ものであ り 、 プラスチッ クチューブの接合時に外周を所定径に規制 しプラスチッ ク の溶着部 を整形する よ う に機能する ものである。 即ち、 図 7 A及び図 7 B に 示すよ う に成形型 1 4 は上型 1 5 と下型 1 6 とカゝらな り 、 上型 1 5 は下向きの半円形断面の成形面 15- 1 を有し、下型 1 6 は下向きの半 円形断面の成形面 16- 1 を有し、通常では図 7 Aのよ う に離間してい るが、 矢印 c のよ う に相互に接近方向に移動させる こ と によ り 図 7 B のよ う に上型 1 5 と下型 1 6 とが合体した と き筒状の成形空洞 1 7 (図 6 G も参照) が形成される。 プラスチッ クチューブ 3 , 3Aの 接合時、 プラスチッ クチューブは対向端面を溶融状態に して成形型 の简状空洞 1 7 に両側 (図 7 Aの矢印 a 2 の方向) から導入され、 プ ラスチック チューブの対向溶融端は突当 られ、溶着される。その際、 プラスチッ クチューブの外周は成形型の内部空洞 1 7 の内周に接触 するためプラスチッ クチューブの外周は規制を受け、 突当部の肉が パリ 状に突出する こ と がないため、 綺麗な接合形状を得る こ とがで き る。 接合形状がスムースであるため、 次回又はその後の接続時に この部分がク ランプされる よ う に場合にも問題な く 透析作業を行 う こ とができ る。 成形型 1 4 へのプラスチッ クチューブ端部の導入を スムースに行 う ため空洞 1 7 の入口部は適宜なテーパ形状とする こ とができ る。 Mold 14 (FIG. 6G) constitutes the outer circumference regulating means of the present invention, It is used for connecting the plastic tube, and functions to regulate the outer circumference to a predetermined diameter when joining the plastic tube, and to shape the welded portion of the plastic tube. That is, as shown in FIG. 7A and FIG. 7B, the molding die 14 is composed of the upper die 15 and the lower die 16, and the upper die 15 is a molding surface having a downward semicircular cross section. 1 and the lower mold 16 has a downward facing semicircular cross-section forming surface 16-1 and is normally separated as shown in Fig. 7A, but approaches each other as shown by arrow c. When the upper mold 15 and the lower mold 16 are combined as shown in FIG. 7B, a cylindrical molding cavity 17 (see also FIG. 6G) is formed. When the plastic tubes 3 and 3A are joined, the plastic tubes are introduced into the rectangular cavity 17 of the mold from both sides (in the direction of the arrow a2 in Fig. 7A) with the opposing end surfaces in a molten state. The fusion ends are abutted and welded. At this time, the outer circumference of the plastic tube comes into contact with the inner circumference of the internal cavity 17 of the molding die, so the outer circumference of the plastic tube is restricted.The flesh of the abutment does not protrude in a paris shape, so it is beautiful. The joint shape can be obtained. Since the joint shape is smooth, the dialysis work can be performed without any problem even if this part is clamped at the next or subsequent connection. In order to smoothly introduce the end of the plastic tube into the mold 14, the entrance of the cavity 17 can be appropriately tapered.
次に、 作業装置 1 0 0 による、 図 1 Bで簡単に説明 したプラスチ ックチューブ 3 の切離し作業の詳細について図 4 A〜図 4 B を参照 して段階を追って説明する と、 図 4 Aは第 1 段階を示し、 ク ランプ 機構 7及び 8 に同軸と なる よ う に補助ク ランプ機構 1 1 が退避位置 から移動してきて、 この状態ではク ラ ンプ機構 7 , 8 , 1 1 は開放状態 であ り 、 図 1 Aのよ う に透析液パック 2 から患者 1 の腹腔に延びて いるプラスチッ ク チューブ 3 が開放状態のク ラ ンプ機構 7, 8 , 1 1 に導入される。 Next, the details of the detaching operation of the plastic tube 3 described in FIG. 1B by the working device 100 will be described step by step with reference to FIGS. 4A to 4B. One stage is shown, and the auxiliary clamp mechanism 11 moves from the retracted position so as to be coaxial with the clamp mechanisms 7 and 8, and in this state, the clamp mechanisms 7, 8, and 11 are open. Thus, as shown in Fig. 1A, the plastic tube 3 extending from the dialysate pack 2 to the abdominal cavity of the patient 1 is open, and the clamp mechanism 7, 8, 1 1 Will be introduced.
次の段階である図 4 B ではク ランプ機構 7, 8, 11 は閉鎖される。 即ち、 図 5 でク ラ ンプ機構 7 について示すよ う にク ラ ンプ部材 7-1, 7-2 は相互に接近する方向に移動され、 プラスチッ ク チューブ 3 は ク ランプ機構 7, 8, 11 によって軸方向に離間 した 3 ケ所において平 坦に圧潰される。  In the next stage, Fig. 4B, the clamping mechanisms 7, 8, 11 are closed. That is, as shown for the clamp mechanism 7 in FIG. 5, the clamp members 7-1 and 7-2 are moved in a direction approaching each other, and the plastic tube 3 is moved by the clamp mechanisms 7, 8, and 11. It is crushed flat at three axially separated points.
次に、 それまで、 紙面に直交する方向に離間した図示しない退避 位置にあった電熱線カ ツタ 9 が駆動され、 図 4 C に示すよ う にク ラ ンプ機構 7, 11 間及ぴ 8, 11 間において電熱線カ ツ タ 9 はプラスチ ッ クチューブ 3 と直交方向 (図 4 C において紙面と直交する方向) に交差移動され、 その結果、 プラスチックチューブ 3 は溶融切断さ れる。 この際、 ク ラ ンプ機構 7, 11 間及び 8, 11 間においてプラス チックチューブ 3 は緊張した状態にあるため電熱線カ ツタ 9 によ る 鋭利な切断状態を得る こ と ができ る。 そ して、 ク ラ ンプ機構 7, 8 によ り 患者 1 の腹腔及び透析液パッ ク 2 からのプラスチッ クチュー プ 3 は圧潰されているため、透析液の流出は阻止されている。また、 電熱線カ ツタ 9 は細 く かつ高温であるため切断時に溶融物の付着が 殆ど無く 、 適切な太さ の線径を選択し必要な耐久性の確保さ え配慮 すれば殆ど無制限と いい う る回数の繰返し的な使用が可能であ り 、 また高温によ り 雑菌も死滅されるため衛生上の観点から好適である c 図 4 Dは電熱線カ ツ タ 9 によ るプラスチッ クチューブ 3 の切断完 了後の状態を示してお り 、 補助ク ラ ンプ 1 1 は紙面直交方向に退避 され、 補助ク ラ ンプ 1 1 に保持された切断されたプラスチックチュ ーブ 3 の図示しない中央部が廃棄される。 そ して、 患者腹腔及び透 析液パックからのプラスチックチューブ 3 はク ラ ンプ機構 7, 8 に ク ランプされた状態に留ま るが、 ク ラ ンプ機構 7, 8 から切断端側で はプラスチッ クチューブ 3 の緊張は失われてお り 、 切断端側でのプ ラスチックチューブ 3 の切断端 6, 6'ではその弾性下で略円形断面 状態に復帰 している。 Next, the heating wire cutter 9, which was located at a retracted position (not shown) separated in a direction perpendicular to the plane of the paper, was driven, and as shown in FIG. 4C, the clamp mechanism 7, 11 and 8, Between 11, the heating wire cutter 9 crosses the plastic tube 3 in the direction perpendicular to the plastic tube 3 (the direction perpendicular to the paper surface in FIG. 4C), and as a result, the plastic tube 3 is melted and cut. At this time, since the plastic tube 3 is in a tensioned state between the clamp mechanisms 7 and 11 and between the clamp mechanisms 8 and 11, a sharp cutting state by the heating wire cutter 9 can be obtained. Then, since the plastic tubes 3 from the abdominal cavity of the patient 1 and the dialysate pack 2 are crushed by the clamp mechanisms 7 and 8, the outflow of the dialysate is prevented. Also, since the heating wire cutter 9 is thin and high temperature, there is almost no adhesion of molten material when cutting, and it is said that it is almost unlimited if an appropriate wire diameter is selected and the required durability is taken into consideration. It is possible to use repeatedly several times, and it is preferable from the viewpoint of hygiene because various bacteria are also killed by the high temperature. C Fig. 4D shows a plastic tube 3 with a heating wire cutter 9. The auxiliary clamp 11 is retracted in the direction perpendicular to the plane of the drawing, and the central part (not shown) of the cut plastic tube 3 held by the auxiliary clamp 11 is shown. Is discarded. Then, the plastic tube 3 from the patient's abdominal cavity and the electrolyte pack remains clamped by the clamp mechanisms 7, 8, but the plastic tube 3 from the clamp mechanisms 7, 8 at the cutting end side. Tube 3 has lost its tension and The cut ends 6, 6 'of the plastic tube 3 return to a substantially circular cross section under the elasticity.
次に、 電熱線カ ツ タ 9 は軸心位置から.外れた図示しない退避位置 に後退され、 図 4 Eに示すよ う に赤外線加熱器 1 0 が退避位置から プラスチッ ク チューブ 8 の切断端に同芯と なる位置まで移動せしめ られる。  Next, the heating wire cutter 9 is retracted from the axial center position to a retracted position (not shown), and the infrared heater 10 is moved from the retracted position to the cut end of the plastic tube 8 as shown in FIG. 4E. It can be moved to a concentric position.
次の段階では図 4 Eの状態から ク ラ ンプ機構 7, 8は相互に向き合 う 方向 (矢印 a ) に軸方向に移動され、 図 4 F に示すよ う に赤外線 加熱器 1 0 の加熱部 12, 12Aはそれぞれプラスチッ クチューブ 3, 3A の切断端 6, 6'の内側に少し入り 込んで位置される。 そして、 赤外 線加熱器 1 0 の加熱部 12, 12Aがプラスチックチューブ 3, 3A の内 側側壁に非接触で至近距離に位置 した と こ ろでク ラ ンプ機構 7, 8 の移動は停止 される。 そ して、 赤外線加熱器 1 0 に通電を行う こ と で加熱部 12, 12Aは赤熱状態に至ら しめ られ、 これによ り発生する 赤外線によ り プラスチッ ク チューブ 3 の切断端部内側面及び端面 は加熱溶融状態を呈する。 図 4 F において 13, 13'はこのよ う な赤 外線によ る非接触加熱によ り 得られるプラスチッ ク チューブ 3 の 端部内側面及び端面における溶融部を示している。  In the next stage, the clamp mechanisms 7 and 8 are moved axially in the direction (arrow a) facing each other from the state of Fig. 4E, and the heating of the infrared heater 10 is performed as shown in Fig. 4F. Parts 12, 12A are located slightly inside cut ends 6, 6 'of plastic tubes 3, 3A, respectively. Then, when the heating sections 12, 12A of the infrared heater 10 are located at a close distance without contact with the inner side walls of the plastic tubes 3, 3A, the movement of the clamp mechanisms 7, 8 is stopped. You. By heating the infrared heater 10, the heating sections 12 and 12 A are brought into a red heat state, and the infrared rays generated by the heating cause the inner surface and the end face of the cut end of the plastic tube 3. Exhibits a heat-melted state. In FIG. 4F, reference numerals 13 and 13 'denote the melted portions on the inner surface and the end surface of the end of the plastic tube 3 obtained by such non-contact heating by infrared rays.
次に、 溶融部 13, 13'の溶融状態を維持する よ う にク ラ ンプ機構 7, 8は軸線方向に相互に離間する方向(矢印 al)に素早く 後退され、 そして、 赤外線加熱器 1 0 は軸心位置から後退される。  Next, the clamp mechanisms 7 and 8 are quickly retracted in the direction away from each other in the axial direction (arrow al) so as to maintain the molten state of the fusion sections 13 and 13 '. Is retracted from the axis position.
次の段階では図 4 Gに示すよ う にク ランプ機構 7, 8が再び相互に 向き合 う 方向 (矢印 a2) に前進され、 プラスチッ クチューブ 3 の切 断端 6, 6'は接触しないよ う にしかし近接位置せしめ られ、同時に、 開放状態の補助ク ランプ機構 1 1 が退避位置から同芯位置に導入さ れる。  In the next stage, as shown in Fig. 4G, the clamping mechanisms 7, 8 are advanced again in the direction in which they face each other (arrow a2), so that the cut ends 6, 6 'of the plastic tube 3 do not touch. However, the auxiliary clamp mechanism 11 in the open state is simultaneously introduced from the retracted position to the concentric position.
そ して、 段階図 4 Hでは補助ク ラ ンプ機構 1 1 のク ラ ンプ部材が 接近方向に移動され、 プラスチック チューブ 3 の切断端 6, 6'が平 坦状に圧潰され、 これよ り プラスチッ クチューブ 3 の端部における 溶融部 13, 13' における対向内周面が相互に密接され溶着に至り 、 冷却を待つこ と によ り 封止端部 5, 5' (封止端部の形状については 図 2参照) が形成される。 Then, in stage diagram 4H, the clamp member of the auxiliary clamp mechanism 11 is The plastic tube 3 is moved in the approaching direction, and the cut ends 6, 6 'of the plastic tube 3 are crushed flat, whereby the opposing inner peripheral surfaces of the melted portions 13, 13' at the end of the plastic tube 3 are brought into close contact with each other. After the welding and cooling, the sealed ends 5, 5 '(see FIG. 2 for the shape of the sealed end) are formed.
次に、 作業装置 1 0 0 による、 図 I Dで簡単に説明 したプラスチ ックチューブ 3, 3Aの接続作業の詳細について図 6 A〜図 6 Hを参 照して段階を追って説明する と、 図 6 Aは第 1 段階を示し、 ク ラ ン プ機構 7及び 8 に同軸と なる よ う に補助ク ラ ンプ機構 1 1 が同軸位 置に導入される。 この状態ではク ラ ンプ機構 7, 8, 11 は開放状態で あ り 、 図 1 Dのよ う に患者の腹腔からのプラスチックチューブ 3 の 封止端部 5 と透析液パッ ク 2 Aからのプラスチッ クチューブ 3 Aの 封止端部 5 A と が圧潰面が補助ク ラ ンプ機構 1 1 のク ランプ面と平 行する よ う に軸線上において正対せしめられる。  Next, the details of the connection operation of the plastic tubes 3 and 3A, which have been briefly described with reference to FIG. ID, by the working device 100 will be described step by step with reference to FIGS. 6A to 6H. Indicates the first stage, and the auxiliary clamp mechanism 11 is introduced at the coaxial position so as to be coaxial with the clamp mechanisms 7 and 8. In this state, the clamp mechanisms 7, 8, and 11 are open, and as shown in FIG. 1D, the sealed end 5 of the plastic tube 3 from the patient's abdominal cavity and the plastic from the dialysate pack 2A. The sealing end 5A of the clamp tube 3A is positioned on the axis so that the crushed surface is parallel to the clamp surface of the auxiliary clamp mechanism 11.
次に、 図 6 B に示すよ う に補助ク ラ ンプ機構 1 1 のク ランプ部材 が合体方向に移動され、 プラスチッ ク チューブ 3, 3A の平坦状の封 止端部 5, 5Aが補助ク ラ ンプ機構 1 1 のク ラ ンプ部材間にク ランプ される。  Next, as shown in FIG. 6B, the clamp member of the auxiliary clamp mechanism 11 is moved in the uniting direction, and the flat sealing ends 5, 5A of the plastic tubes 3, 3A are attached to the auxiliary clamp mechanism. It is clamped between the clamp members of the pump mechanism 11.
次に、それまで退避位置にあった電熱線力 ッ タ 9 が再度導入され、 図 6 C に示すよ う にク ラ ンプ機構 7, 11 間及び 8, 11 間においてプ ラスチック チューブ 3, 3A と直交方向 (図 6 Cの紙面と直交する方 向) に移動せしめ られ、 プラスチッ ク チューブ 3, 3A はク ラ ンプ機 構 7 と補助ク ラ ンプ機構 1 1 との間及ぴク ラ ンプ機構 8 と補助ク ラ ンプ機構 1 1 と の間で比較的緊張状態に保持されているため、 ブラ スチッ クチューブ 3, 3A はク ラ ンプ機構 7, 11 間及ぴ 8, 11 間にお いて鋭利に切断される。  Next, the heating wire cutter 9 that was in the retracted position was introduced again, and as shown in Figure 6C, the plastic tubes 3, 3A were connected between the clamp mechanisms 7, 11 and between 8, 11. The plastic tubes 3 and 3A are moved in the orthogonal direction (the direction orthogonal to the paper surface of Fig. 6C), and the plastic tubes 3 and 3A extend between the clamp mechanism 7 and the auxiliary clamp mechanism 11. The plastic tubes 3 and 3A are sharply cut between the clamp mechanisms 7 and 11 and between the clamp mechanisms 8 and 11 because the tension between the clamp mechanism and the auxiliary clamp mechanism 11 is relatively high. Is done.
図 6 Dは電熱線カ ツ タ 9 によるプラスチッ クチューブ 3, 3Aの切 断完了後の状態を示 してお り 、 補助ク ランプ 1 1 は封止部 5 , 5Aか ら切断部までのプラスチッ ク チューブの切除部分を保持しつつ図示 しない退避位置に後退され、 補助ク ラ ンプ 1 1 に把持された切除部 分 5 , 5A'は廃棄される。 他方、 患者腹腔からのプラスチッ クチュー ブ 3及ぴ透析液パッ クからのプラスチックチューブ 3 Aはク ラ ンプ 機構 7 , 8 にク ランプされた状態に留ま るが、 ク ラ ンプ機構 7 , 8 か ら切断端側ではプラスチッ クチューブ 3 , 3Aの緊張は失われてお り 、 切断端側でのプラスチッ ク チューブ 3, 3Aの切断端 6, 6A は略円形 断面に復帰している。 Figure 6D shows cutting of plastic tubes 3 and 3A by heating wire cutter 9. The auxiliary clamp 11 is retracted to a retracted position (not shown) while holding the cut portion of the plastic tube from the sealing portions 5 and 5A to the cutting portion, and the auxiliary clamp 11 is shown. The cut portions 5, 5A 'held by the lamp 11 are discarded. On the other hand, the plastic tube 3 from the abdominal cavity of the patient and the plastic tube 3A from the dialysate pack remain clamped by the clamp mechanisms 7 and 8, but are not clamped by the clamp mechanisms 7 and 8. At the cut end, the tension of the plastic tubes 3 and 3A is lost, and the cut ends 6 and 6A of the plastic tubes 3 and 3A at the cut end return to a substantially circular cross section.
次に、 電熱線カ ツ タ 9 は再び退避位置に後退され、 図 6 Eに示す 段階に至 り 、 赤外線加熱器 1 0 が退避位置からプラスチッ クチュー ブ 8 の切断端に同芯と なる位置まで再度導入せしめ られる。  Next, the heating wire cutter 9 is retracted to the retracted position again, and reaches the stage shown in FIG. 6E, where the infrared heater 10 is moved from the retracted position to a position concentric with the cut end of the plastic tube 8. Will be introduced again.
次の段階ではク ラ ンプ機構 7 , 8 は相互に向き合 う方向 (図 6 Eの 矢印 a 2 ) に軸方向に移動され、 図 6 F に示すよ う に赤外線加熱器 1 0 の加熱部 12 , 12A はそれぞれプラスチックチューブ 3 , 3A の切断 端 6, 6A の内側に少し入 り 込んで位置される。 そ して、 赤外線加熱 器 1 0 の加熱部 12, 12Aがプラスチッ クチューブ 3 , 3A の内側側壁 に非接触で至近距離に位置したと こ ろでク ランプ機構 7 , 8の移動は 停止される。 そして、 赤外線加熱器 1 0 に通電を行 う こ と で加熱部 12 , 12A は赤熱せしめられ、 これによ り発生せしめ られる赤外線に よ り プラスチックチューブ 3, 3A の端部内側面及び端面は加熱溶融 状態を呈する。 図 6 F において 1 3, 13Aはこのよ う な赤外線による 非接触加熱によ り得られるプラスチッ クチューブ 3, 3A の端部内側 面及ぴ端面における溶融部を示している。 そして、 プラスチック チ ユ ーブ 3, 3Aの端部の溶融加熱状態を維持する よ う にク ラ ンプ機構 7 , 8 は軸線方向に相互に離間する方向に素早く 後退 (矢印 a l方向) され、 そして、 赤外線加熱器 1 0 は退避位置まで後退される。 次の段階では図 6 Gに示すよ う に成形型 1 4が退避位置からブラ スチッ クチューブ 3, 3A と整列する位置まで移動される。 In the next stage, the clamp mechanisms 7, 8 are moved axially in the direction facing each other (arrow a2 in Fig. 6E), and as shown in Fig. 6F, the heating section of the infrared heater 10 is heated. 12 and 12A are located slightly inside the cut ends 6 and 6A of the plastic tubes 3 and 3A, respectively. Then, the movement of the clamp mechanisms 7, 8 is stopped when the heating sections 12, 12A of the infrared heater 10 are located at a close distance without contact with the inner side walls of the plastic tubes 3, 3A. When the infrared heater 10 is energized, the heating sections 12, 12A are glowed red, and the infrared rays generated by the heating cause the inner surfaces and end faces of the ends of the plastic tubes 3, 3A to be heated and melted. Present state. In Fig. 6F, 13 and 13A indicate the melted portions on the inner and outer surfaces of the ends of the plastic tubes 3 and 3A obtained by such non-contact heating by infrared rays. Then, the clamp mechanisms 7 and 8 are quickly retracted in the direction away from each other in the axial direction so as to maintain the melted state of the ends of the plastic tubes 3 and 3A (along arrow al), and The infrared heater 10 is retracted to the retract position. In the next stage, as shown in FIG. 6G, the mold 14 is moved from the retracted position to a position where it is aligned with the plastic tubes 3, 3A.
そして、 段階図 6 Hではク ラ ンプ機構 7, 8 は再ぴ相互に向き合う 方向 (矢印 a2 方向) に前進され、 プラスチック チューブの切断端 6, 6Aが合体状態 (図 7 B ) の上下の型 15, 16 間に形成される筒状 空洞 1 7 に導入され、 プラスチッ ク チューブの切断端 6, 6A におけ る加熱された端面同士は突当 られ、 溶融部 13, 13Aは相互に溶着し 熱溶着部 4 を形成するに至る。 赤外線加熱器 1 0 による加熱はブラ スチッ クチューブ 3, 3Aの端面のみでな く 端面に隣接して内周部も 加熱するが、 これによ り溶融面積が広く なるため突当時の溶着代が 大き く な り 、 良好な融着状態を得る こ とができる。 溶着時において プラスチッ クチューブ 3, 3Aの外周部は成形型 1 4 の筒状空洞 1 7 の内周によ り規制され、 突当部のパ リ を抑え、 綺麗な接続状態を得 る こ と ができ る。 突当部が冷却する と 、 成形型 1 4 は図 7 Aのよ う に上下に開かれ、 同時にク ラ ンプ機構 7, 8 をアンク ラ ンプする こ と によ り 、 プラスチッ クチューブ 3, 3A間での透析液の流通が可能と な り 、 腹膜透析の実施が可能と なる。 成形型 1 4 は温度が低く 、 そ の熱容量はプラスチックチューブの溶融部のそれよ り 圧倒的に小さ いため、 成形型 1 4 と の接触はプラスチッ クチューブの溶融部の急 速冷却を実現し、 作業時間の短縮化を図る こ とができ る。 第 1 実施形餱の部分的変形実施形態  Then, in the step diagram 6H, the clamp mechanisms 7, 8 are advanced in the directions opposite to each other (the direction of the arrow a2), and the cut ends 6, 6A of the plastic tube are combined into the upper and lower molds (FIG. 7B). The heated end faces at the cut ends 6, 6A of the plastic tube, which are introduced into the cylindrical cavity 17 formed between 15, 15 and 16, are abutted against each other, and the fused portions 13, 13A are welded to each other to generate heat. A weld 4 is formed. Heating by the infrared heater 10 heats not only the end faces of the plastic tubes 3 and 3A, but also the inner periphery adjacent to the end faces, which increases the melting area and increases the welding allowance at the time of the sudden impact. As a result, a good fusion state can be obtained. At the time of welding, the outer circumference of the plastic tubes 3 and 3A is regulated by the inner circumference of the cylindrical cavity 17 of the molding die 14, so that it is possible to suppress the pallet of the abutting portion and obtain a clean connection state. it can. When the abutting part cools, the molding die 14 is opened up and down as shown in FIG. 7A, and at the same time, the clamping mechanisms 7 and 8 are unclamped. The dialysis solution can be circulated, and peritoneal dialysis can be performed. The temperature of the mold 14 is low and its heat capacity is much smaller than that of the melted part of the plastic tube, so that contact with the mold 14 realizes rapid cooling of the melted part of the plastic tube, The time can be reduced. Partially modified embodiment of the first embodiment
図 8 A〜図 8 Dは第 1 の実施形態における図 4 A〜図 4 D に相当 するが、 ク ランプによ る液体のしごき を行う 変形実施形態を示して レヽる。 即ち、 ク ランプ 7 によるプラスチッ ク チューブ 3 のク ラ ンプ 開始時、 図 8 Aに示すよ う にク ラ ンプ 7, 8 を捕助ク ラ ンプ機構 1 1 に近接位置させ、 図 8 B に示すよ う にプラスチッ クチューブ 3 をク ランプし、 ク ランプ状態を維持しつつク ランプ 7, 8 を矢印 a l のよ う に相互に離間する方向に本来の位置まで移動させる。 その結果、 ク ラ ンプ 7 , 1 1 間及び 8 , 1 1 間でプラスチッ クチューブ 3 はしごか れ、 液体はク ラ ンプ 7, 8 の外側のプラスチッ クチューブの部位に移 行せしめ られ、 ク ラ ンプ 7 , 8 間におけるプラスチッ クチューブの部 位に液体の残存がないため、 それに継続する電熱線カ ツタ 9 によ る パイ プ切断時に液漏れや電熱線の熱による液の蒸発のおそれを解消 し う る点で好都合である。 プラスチッ クチューブ 3 の接続時におい ても、 図 6 Aから図 6 C の動作においてク ラ ンプ 7, 8 の同様な しご き作用を惹起させ、 同等の効果を奏する こ とができ る。 8A to 8D correspond to FIGS. 4A to 4D in the first embodiment, but show a modified embodiment in which ironing of a liquid by a clamp is performed. That is, when the clamp 7 starts to clamp the plastic tube 3, the clamps 7, 8 are positioned close to the auxiliary clamp mechanism 11 as shown in FIG. Click on plastic tube 3 The lamp is ramped, and the clamps 7, 8 are moved to their original positions in the direction away from each other as shown by the arrow al while maintaining the clamp state. As a result, the plastic tube 3 is laddered between the clamps 7 and 11 and between the clamps 8 and 11, and the liquid is transferred to the plastic tube portion outside the clamps 7 and 8. Since there is no liquid remaining in the plastic tube between the points 8 and 9, the risk of liquid leakage and evaporation of the liquid due to the heat of the heating wire is eliminated when the pipe is cut by the heating wire cutter 9 that continues. It is convenient in this respect. Even when the plastic tube 3 is connected, in the operations of FIGS. 6A to 6C, the same ironing action of the clamps 7 and 8 can be induced, and the same effect can be obtained.
以上の第 1 の実施形態において、 プラスチッ クチューブ 3, 3Aの 端部の加熱のための加熱部 6 , 6Aはプラスチッ クチューブの内面に 幾分突出する形状と したが後述の第 2 実施形態 と 同様にプラスチッ クチューブの端面から幾分離間させた単なる コイル状の電熱線 (図 9参照) であってもプラスチックチューブ 3 , 3Aの端部同士の突当 融着を支障なく 行い う る。 第 2実施形態  In the above-described first embodiment, the heating portions 6 and 6A for heating the ends of the plastic tubes 3 and 3A have a shape that slightly protrudes from the inner surface of the plastic tube, but similar to the second embodiment described later. Even with a simple coil-shaped heating wire (see Fig. 9) separated from the end face of the plastic tube, the ends of the plastic tubes 3 and 3A can be abutted and fused without any trouble. Second embodiment
次に、 第 2 の実施形態について説明する。 第 2 の実施形態の作業 装置は第 1 の対の上下のローラ 1 8 と 、 第 2 の対の上下のローラ 2 0 と 、 これら ローラ対間における一対の上下のク ラ ンプ機構 2 2 と から構成される。 図 1 0 に示すよ う に上下のローラ 18 , 20 は片持状 に設けられ、 図示しない回転駆動装置によ り 回転駆動し う る よ う に 設けられる と共に図示しない直線駆動装置によ り 軸線方向 (図 1 0 の矢印 k方向) に移動可能に設けられる。 また、 片持状の上下の口 ーラ 18 , 20 は相互に離間方向に移動させる こ と によ り 、 自 由端側よ り プラスチックチューブ 3 をその間に導入する こ とができ る。 上下 のク ラ ンプ機構 2 2 は、その各々 が、一対のサイ ドク ランプ 24A, 24B と、 サイ ドク ランプ 24A, 24B 間のセンタ ク ラ ンプ 2 6 と から構成さ れる。 図 9 に示すよ う にク ラ ンプ機構 2 2 を構成する これらの要素 24A, 24B , 26 は片持レパー状に設け られ、 図示しない一端の支点の 周 り でこれら要素を開放するべく 回動 させる こ と によ り その間にプ ラスチッ ク チューブ 3 を導入する こ と ができ る。 Next, a second embodiment will be described. The working device of the second embodiment includes a first pair of upper and lower rollers 18, a second pair of upper and lower rollers 20, and a pair of upper and lower clamp mechanisms 22 between these roller pairs. Be composed. As shown in FIG. 10, the upper and lower rollers 18 and 20 are provided in a cantilever shape, are provided so as to be rotationally driven by a rotation driving device (not shown), and have an axis line formed by a linear driving device (not shown). It is provided to be movable in the direction (the direction of arrow k in FIG. 10). By moving the cantilever upper and lower rollers 18, 20 in a direction away from each other, the plastic tube 3 can be introduced between the free ends from there. Up and down Each of the clamp mechanisms 22 is composed of a pair of side clamps 24A, 24B and a center clamp 26 between the side clamps 24A, 24B. As shown in FIG. 9, these elements 24A, 24B, and 26 constituting the clamp mechanism 22 are provided in a cantilever shape, and are turned around a fulcrum at one end (not shown) to open these elements. By doing so, the plastic tube 3 can be introduced between them.
図 9 において、 支持部材 2 8 はプラスチッ クチューブ 3 の切断用 の電熱線カ ツ タ 3 0 とプラスチッ ク チューブ 3 の端面の熱溶融用の 加熱部 3 2 と を支持する ものである。 第 1 の実施形態では電熱線力 ッ タ 9 及び加熱部 12 , 12Aは左右のプラスチックチューブ毎に、 即 ち、 2組設け られていたが、 こ の実施形態では共通の電熱線カ ツ タ 3 0 と加熱部 3 2 と を左右のプラスチッ クチューブ間で共用する よ う にしている。 第 1 の実施形態と 同様に電熱線カ ツタ 3 0 は 0. 2mm といつた径のニク 口 ム線を支持部材 2 8 から延びる耐熱性の電気絶 縁素材にて形成されたビーム 3 4 間に張り 渡して構成される。他方、 赤外線加熱器 3 2 はこの実施形態では 0. 5mm といった径のニク ロ ム 線を平面コイル状に形成し、 その両端をビーム 3 4 に固着して構成 される。 支持部材 2 8 は電熱線カ ツ タ 3 0 と加熱部 3 2 から離間側 において図示しない直線駆動部を有してお り 、 水平方向 (矢印 d l , d2 ) に往復移動可能と なっている。  In FIG. 9, a support member 28 supports a heating wire cutter 30 for cutting the plastic tube 3 and a heating portion 32 for melting the end of the plastic tube 3. In the first embodiment, two sets of the heating wire heater 9 and the heating sections 12 and 12A are provided for each of the left and right plastic tubes, but in this embodiment, a common heating wire cutter 3 is provided. 0 and the heating section 32 are shared between the left and right plastic tubes. As in the first embodiment, the heating wire cutter 30 has a nickel wire having a diameter of 0.2 mm and a beam 34 formed of a heat-resistant electrical insulating material extending from the support member 28. It is constructed by stretching over On the other hand, the infrared heater 32 is formed by forming a nickel wire having a diameter of 0.5 mm in the form of a plane coil in this embodiment, and fixing both ends to the beam 34. The support member 28 has a linear drive unit (not shown) on the side away from the heating wire cutter 30 and the heating unit 32, and is capable of reciprocating in the horizontal direction (arrows d1, d2).
次に、 以上説明 した第 2 の実施形態における作業装置によ る腹膜 透析中におけるプラスチッ クチューブの切離し及ぴ接続作業につい て説明する。 図 1 1 Aは第 1 段階を示 し、 上下のローラ 18 , 20及ぴ 上下のク ラ ンプ機構 2 は開かれ、 その開口部よ り プラスチックチュ ーブ 3 が挿入されている。 プラスチ ッ クチューブ 3 の挿入方向は図 9 で矢印 e にて示す。  Next, the operation of disconnecting and connecting the plastic tube during peritoneal dialysis by the working device according to the second embodiment described above will be described. FIG. 11A shows the first stage, in which the upper and lower rollers 18, 20 and the upper and lower clamp mechanisms 2 are opened, and the plastic tube 3 is inserted through the opening. The insertion direction of the plastic tube 3 is indicated by arrow e in FIG.
次の段階を示す図 1 1 B では上下のク ランプ機構 2 6 は閉鎖され る。 即ち、 上下のサイ ドク ラ ンプ 24A , 24B及ぴセンタ ク ランプ 2 6 は相互に接近方向 (矢印 f ) に移動され、 プラスチックチューブ 3 を介して当接せしめ られ、 ク ランプされたプラスチックチューブ 3 の部分は平坦に圧潰される。 In the next step, Figure 11B, the upper and lower clamp mechanisms 26 are closed. You. That is, the upper and lower side clamps 24A, 24B and the center clamp 26 are moved toward each other in the approaching direction (arrow f), contacted via the plastic tube 3, and the clamped plastic tube 3 The part is crushed flat.
次の段階である図 1 1 Cでは左右の ローラ対 18, 20の各々は相互 に接近方向 (矢印 g ) に移動される。 ローラ対 18 , 20 はプラスチッ クチューブ 3 を圧潰する。 そのため、 内部の液体はチューブ 3 の丸 断面部分側へ押しやられる (移行せしめ られる)。  In the next stage, Fig. 11C, the left and right roller pairs 18, 20 are moved toward each other in the approaching direction (arrow g). Roller pairs 18 and 20 crush plastic tube 3. Therefore, the liquid inside is pushed (transferred) toward the round cross-section of tube 3.
次の段階である図 1 1 Dではローラ対 18 , 20によ り プラスチッ ク チューブ 3 を圧潰した状態でサイ ドク ラ ンプ 24A , 24Bの及ぴセンタ ク ランプ 2 6 は開かれる と共に左右のローラ対 18 , 20は矢印 h方向 に幾分回転され、 そのためローラ対 18, 20間においてプラスチッ ク チューブ 3 は緊張を受ける。  In the next stage, Fig. 11D, the plastic tubes 3 are crushed by the roller pairs 18 and 20, and the center clamps 26 of the side clamps 24A and 24B are opened and the left and right roller pairs are opened. 18 and 20 are rotated somewhat in the direction of arrow h, so that the plastic tube 3 is tensioned between the pair of rollers 18 and 20.
次の段階である図 1 1 Eでは、 図 9 の後退位置にあった支持部材 2 8 が図 9 の矢印 d l の方向に移動され、この方向は図 1 1 Eでは紙 面に直交方向であ り 、 電熱線カ ツタ 3 0 はプラスチックチューブ 3 に対して交差移動され、 その結果、 プラスチッ ク チューブ 3 は溶融 切断される。切断によ り プラスチックチューブ 3 の緊張は開放され、 その弾性下で切断端 6 , 6' (図 1 1 F参照) は円形の状態に復帰さ れる。  In the next step, FIG. 11E, the support member 28 at the retracted position in FIG. 9 is moved in the direction of the arrow dl in FIG. 9, and this direction is orthogonal to the paper in FIG. 11E. Then, the heating wire cutter 30 is cross-moved with respect to the plastic tube 3, and as a result, the plastic tube 3 is melted and cut. The cutting releases the tension of the plastic tube 3, and the cut ends 6, 6 '(see Fig. 11F) return to the circular state under the elasticity.
次の段階である図 1 1 Fでは支持部材 2 8 は図 9 の矢印 d l 方向 に更に前進され、 ニク ロ ム線を平面コイル状に卷回してなる加熱部 3 2がプラスチッ ク チューブ 3 の切断端 6 , 6 ' に対面せしめられる。 そして、 加熱部 3 2 を構成するニク ロ ム線に通電する こ と によ り プ ラスチッ ク チューブ 3 の切断端部内側面及ぴ端面は加熱溶融状態 を呈する。そして、支持部材 2 8 は図 9 の矢印 d2方向に後退される。 次の段階である図 1 1 Gでは上下のサイ ドク ラ ンプ 24A, 24B及ぴ センタ ク ラ ンプ 2 6 は矢印 f のよ う に相互に向き合 う 方向に移動さ れ、 プラスチックチューブ 3 の切断端 6, 6'が平坦状に圧潰され、 これよ り プラスチッ クチューブ 3 の端部における溶融部 13, 13'に おける対向内周面が相互に密接され溶着に至 り 、 封止端部 5, 5' (図 2 も参照) が形成される。 最終段階である図 1 1 Hでは左右のロ ー ラ 18, 20 の対及びク ラ ンプ機構 2 2 が矢印 fl方向に開かれ、 封止 端部 5, 5'を形成したプラスチックチューブ 3が引き抜かれた状態 を示す。 In the next stage, Fig. 11F, the support member 28 is further advanced in the direction of arrow dl in Fig. 9, and the heating section 32 formed by winding a nickel wire into a planar coil cuts the plastic tube 3. Faced to edges 6 and 6 '. By energizing the nickel wire forming the heating section 32, the cut tube end inner side surface and the end surface of the plastic tube 3 exhibit a heat-melted state. Then, the support member 28 is retracted in the direction of the arrow d2 in FIG. In the next stage, Fig. 11G, the upper and lower side clamps 24A, 24B and The center clamps 26 are moved in opposite directions as indicated by the arrow f, and the cut ends 6, 6 'of the plastic tube 3 are crushed flat, whereby the end of the plastic tube 3 is The opposing inner peripheral surfaces of the melted portions 13 and 13 'in FIG. 1 are brought into close contact with each other and welded to form sealed ends 5, 5' (see also FIG. 2). In the final stage, Fig. 11H, the pair of left and right rollers 18 and 20 and the clamp mechanism 22 are opened in the direction of the arrow fl, and the plastic tube 3 formed with the sealing ends 5, 5 'is pulled. Indicates that it has been pulled out.
次に、 第 2 の実施形態についてプラスチックチューブ 3, 3Aの接 続作業の詳細について段階を追って説明する。 接続作業の各段階に おいて左半分の図 1 2 A〜図 1 2 Hは接続作業の各段階における側 面概略図であ り 、 右半分の図 12A'〜図 12H'は平面概略図である。 図 12A及ぴ図 12A'は第 1 段階を示し、 それぞれが上下のサイ ドク ラ ン プ 24A, 24B及びセンタ ク ラ ンプ 2 6 よ り 成る上下のク ランプ機構 2 2 は開かれ、 他方ロ ーラ 18, 20 の上下の対は離間せしめられ、 患者 の腹腔からのプラスチッ クチューブ 3 の封止端部 5 が左側の上下の ローラ 1 8 間に導入され、 透析液パッ ク 2 Aからのプラスチックチ ユ ーブ 3 Aの封止端部 5 A と の圧潰面が右側の上下のローラ 2 0 間 に導入される。 図 12A' に示すよ う にこの段階ではプラスチッ クチ ユ ーブ 3, 3A は水平方向にずれて位置している。 ローラ対 18, 20 によるプラスチック チューブ 3 の保持状態を図 9, 10 では想像線 P にて示し、 プラスチッ クチューブ 3 Aの保持状態を図 9, 10 では想 像線 P Aにて示す。 Next, details of the connection work of the plastic tubes 3 and 3A in the second embodiment will be described step by step. At each stage of the connection work, FIGS. 12A to 12H on the left half are schematic side views at each stage of the connection work, and FIGS. 12A ′ to 12H ′ on the right half are schematic plan views. is there. FIGS. 12A and 12A ′ show the first stage, in which the upper and lower clamp mechanisms 22 each consisting of upper and lower side clamps 24A, 24B and a center clamp 26 are opened, while the lower clamp mechanism is opened. The upper and lower pairs of rollers 18 and 20 are separated from each other, and the sealing end 5 of the plastic tube 3 from the patient's abdominal cavity is introduced between the upper and lower rollers 18 on the left side. The crushed surface of the tube 3A with the sealing end 5A is introduced between the upper and lower rollers 20 on the right side. At this stage, as shown in Fig. 12A ', the plastic tubes 3 and 3A are shifted horizontally. The holding state of the plastic tube 3 by the roller pairs 18 and 20 is shown by the imaginary line P in Figs. 9 and 10, and the holding state of the plastic tube 3A is shown by the imaginary line PA in Figs.
次の段階を示す図 12B及び図 12B'ではプラスチックチューブ 3 を ク ランプした左側のローラ対 1 8 が矢印 hi方向に回転せしめ られ、 ローラ 1 8 はプラスチックチューブ 3 をしごきなが ら矢印 j のよ う に右方向に送り 、 右側のロ ーラ対 2 0 の直前まで送る。 尚、 図示し ないが、 プラスチッ クチューブ 3 の封止端 5 を検出してローラ 1 8 の送り を停止せしめる機構が設けられる。 そして、 右側のサイ ドク ラ ンプ 2 4 Bが矢印 f のよ う に接近方向に移動され、 平坦に圧潰さ れたプラスチックチューブ 3 をク ラ ンプする。 In the next step, FIGS. 12B and 12B ', the left roller pair 18 that has clamped the plastic tube 3 is rotated in the direction of the arrow hi, and the roller 18 squeezes the plastic tube 3 as indicated by the arrow j. To the right, and to just before the right roller pair 20. Note that However, a mechanism is provided to detect the sealing end 5 of the plastic tube 3 and stop the feed of the roller 18. Then, the right side clamp 24B is moved in the approaching direction as indicated by the arrow f, and the flattened plastic tube 3 is clamped.
次の段階を示す図 12C及び図 12C'では右側の上下のローラ 2 0 が 矢印 hi 方向に回転され、プラスチッ クチューブ 3 Aは同様に圧潰さ れつつローラ 1 8 の手前の位置まで左方向に移動され、 左側の上下 のサイ ドク ラ ンプ 2 4 Aが接近方向に移動され、 平坦に圧潰された プラスチッ ク チューブ 3 Aをク ラ ンプする。 同様に、 プラスチッ ク チューブ 3 Aの封止端 5 Aを検出 してローラ 2 0 の送り を停止せし める機構が設け られる。 第 2段階 (図 12B及び図 12B' ) 及ぴ第 3段 階 (図 12C 及び図 12C' ) においてローラ I8, 20 の回転によ るプラ スチッ クチューブ 3, 3Aのしごきによ り プラスチックチューブ内の 液は搾られ丸断面部に押しやられる (移行される) ため、 切断部に おける液の残留がな く 、 汚染や加熱時の蒸発のおそれを防止する こ と ができ る。 12C and 12C 'showing the next stage, the upper and lower right rollers 20 are rotated in the direction of the arrow hi, and the plastic tube 3A is similarly crushed and moves leftward to the position before the roller 18 in the same manner. Then, the upper and lower side clamps 24 A on the left side are moved in the approaching direction, and clamp the plastic tube 3 A which is crushed flat. Similarly, a mechanism is provided for detecting the sealing end 5A of the plastic tube 3A and stopping the feed of the roller 20. The second step (FIG. 12B and FIG. 12B ')及Pi third stage floor (FIGS. 12C and 12C') in the roller I 8, 20 plug that by the rotation of Suchi' Kuchubu 3, 3A by Ri in plastic tube squeezing of Since the liquid is squeezed and pushed (transferred) to the round cross-section, the liquid does not remain in the cut portion, and contamination and evaporation during heating can be prevented.
次の段階を示す図 12D 及び図 12D'では、 左右のローラ 18, 20 の 対は矢印 h方向に少 し逆転され、 ローラ 18, 20 間においてプラスチ ッ クチューブ 3 , 3A は緊張される。 そして、 図 9 の支持部材 2 8 が 同図の矢印 dl方向に前進され、電熱カ ツタ 3 ◦ はプラスチッ クチュ ーブ 3, 3A と交差方向に移動され、 電熱カ ツタ 3 0 によ り 最初にプ ラスチッ クチューブ 3 Aが次いでプラスチッ クチューブ 3 が切断さ れる。 図 12E及ぴ図 12E'は切断後の状態を示し、 切断によ り 切 り 離 された元の封止部分は図 12E'に 5' , 5A'にてそれぞれ示す。 プラス チッ クチューブ 3, 3Aは切断によ り 緊張が解除されるためその弾性 によ り 開 口端 6, 6A は円形状に復帰される。 これらの部分 5', 5A' はサイ ドク ラ ンプ 24A, 24B を開く こ と によ り 除去され廃棄される。 次の段階を示す図 12F及ぴ図 12F'では、 一方のローラ対、 この例 では左側ローラ対 1 8 をプラスチッ ク チューブ 3 の把持を維持して その軸線に沿って水平面内に矢印 k方向に後退させ、 それが把持す るプラスチッ クチューブ 3 をローラ 2 0 によ り 把持されたプラスチ ックチューブ 3 A と正対した状態に至ら しめる。 そして、 図 9 にお ける支持部材 2 8 の同図矢印 dl方向の移動によ り 、赤外線加熱器の 加熱部 3 2 (ニク ロ ム線を平面コイル状に卷回したもの) をプラス チックチューブ 3, 3A の切断端 6, 6A に正対して位置させる。 そ し て、 通電を行う こ と によ り 加熱部 3 2 は赤熱せしめ られ、 これによ り発生せしめ られる赤外線によ り プラスチッ クチューブ 3, 3A の端 部内側面及び端面は加熱溶融状態を呈する。 In FIGS. 12D and 12D 'showing the next stage, the pair of left and right rollers 18, 20 is slightly reversed in the direction of arrow h, and the plastic tubes 3, 3A are tightened between the rollers 18, 20. Then, the support member 28 in FIG. 9 is advanced in the direction of the arrow dl in FIG. 9, and the electric heating cutter 3 ◦ is moved in a direction crossing the plastic tubes 3 and 3 A, and is first moved by the electric heating cutter 30. The plastic tube 3 A is cut next, followed by the plastic tube 3. FIGS. 12E and 12E 'show the state after cutting, and the original sealing portions separated by cutting are shown by 5' and 5A 'in FIG. 12E', respectively. Since the plastic tubes 3 and 3A are released from the tension by being cut, their open ends 6 and 6A return to a circular shape due to their elasticity. These parts 5 ', 5A' are removed and opened by opening side clamps 24A, 24B. In Figure 12F and Figure 12F ', which show the next stage, one roller pair, in this case the left roller pair 18 is held in the horizontal plane along its axis in the direction of arrow k while holding the plastic tube 3 in place. It is retracted to bring the plastic tube 3 gripped by the roller 20 directly into contact with the plastic tube 3 A gripped by the rollers 20. Then, by moving the support member 28 in FIG. 9 in the direction of the arrow dl in the same figure, the heating part 32 of the infrared heater (the nickel wire is wound into a planar coil) is made into a plastic tube. Position it directly against cut ends 6 and 6A of 3, 3A. The heating section 32 is glowed red by energization, and the infrared rays generated by the heating cause the inner surfaces and the end faces of the ends of the plastic tubes 3 and 3A to be in a heated and molten state.
次の段階を示す図 12G及び図 12G' においては、 第 1 実施形態にお ける上下の型 15, 16 と 同様な断面半円形の割型 3 6 (割型 3 6 は図 9 のよ う にク ラ ンプ機構 2 2 に一体に形成する こ とができ る) によ り プラスチッ クチューブ 3, 3Aの切断端 6, 6Aを上下よ り 挟みつつ、 上下の型 15, 16の合体時に形成される 円形断面の成形空洞 3 8 にプ ラスチッ ク チューブ 3, 3A の切断端 6, 6A を対向位置せしめる と 同 時に、 左右のローラ対 18, 20 を矢印 hi方向に回転せしめる。 その 結果、 図 7 A及び図 7 Bで説明した動作と 同様にプラスチックチュ —ブ 3, 3A相互に向き合う 方向に移動せしめ られ、 プラスチック チ ユ ーブ 3, 3Aの切断端 6, 6A における加熱された端面同士は円形断 面の成形空洞 3 8 内において突当 られ、 溶融部 I3, 13Aは相互に溶 着する に至る。 In FIGS. 12G and 12G ′ showing the next stage, a split mold 36 having a semicircular cross section similar to the upper and lower molds 15 and 16 in the first embodiment (the split mold 36 is formed as shown in FIG. 9) It can be formed integrally with the clamp mechanism 22), so that the cut ends 6 , 6A of the plastic tubes 3 , 3A are sandwiched from above and below, and are formed when the upper and lower dies 15, 16 are combined. The cut ends 6, 6A of the plastic tubes 3, 3A face the molding cavity 38 with a circular cross section, and at the same time, the left and right roller pairs 18, 20 are rotated in the direction of the arrow hi. As a result, the plastic tubes 3 and 3A are moved in the direction facing each other in the same manner as the operation described with reference to FIGS. 7A and 7B, and the plastic tubes 3 and 3A are heated at the cut ends 6 and 6A. end faces are provided abutting in the molding cavity 3 in 8 of circular cross section, the molten portion I 3, 13A leads to mutually soluble Chakusuru.
最終段階を示す図 12H及び図 12H'おいてはローラ対 18, 20及び ク ランプ部材 24A, 24B, 26 が開かれ、 左右のプラスチックチューブ 3, 3Aが図 3 と 同様な熱溶着部 4 によ り 接続された状態を示す。 以上説明 した第 2 の実施形態ではローラ 18, 20の回転によ り プラ スチッ クチューブ 3 , 3A に確実な送り をかけてお り 、 封止端 5 , 5A の接続を行 う場合において図 1 2 Aにおいてローラ 18 , 20に対する 封止端 5 , 5Aの姿勢に関わ らずプラスチックチューブの切断部に残 存する液体をク ランプの外側の円断面部に移行 · 排出する こ とがで き る メ リ ッ 卜がある。 また、 第 1 の実施形態と比較して電熱線ヒ ー タ 3 0及び加熱部 3 2 がーつずつで済むため、 部品点数が節約でき る メ リ ッ トがある。 第 3 実施形態 ' In FIGS. 12H and 12H 'showing the final stage, the roller pairs 18, 20 and the clamp members 24A, 24B, 26 are opened, and the left and right plastic tubes 3, 3A are joined by the heat-welded portion 4 similar to that in FIG. Connected. In the second embodiment described above, the rotation of the rollers 18 and 20 causes the The feeding is securely applied to the stick tubes 3 and 3A, and when connecting the sealing ends 5 and 5A, regardless of the position of the sealing ends 5 and 5A with respect to the rollers 18 and 20 in Fig. 12A when connecting the sealing ends 5 and 5A. There is a merit that allows the liquid remaining in the cut part of the plastic tube to be transferred and discharged to the circular cross section outside the clamp. Further, compared with the first embodiment, since only one heating wire heater 30 and one heating unit 32 are required, there is an advantage that the number of parts can be reduced. Third embodiment ''
図 1 3 〜図 1 6 Hは第 3 の実施形態を示し、 この実施形態は電熱 線カ ツタ及ぴ赤外線加熱器の加熱部を左右のプラスチックチューブ で共有させた点は第 2実施形態と 同様である。 しかしなが ら、 第 2 の実施形態における ローラ対は使用せず、 代わ り に断面 L形のク ラ ンプ機構を使用 している。 即ち、 ク ラ ンプ機構 4 0 は左側の上下の ク ラ ンプ部材 4 2 と右側の上下のク ラ ンプ 4 4 と を備え、 ク ラ ンプ 42 , 44 は断面 L状をなし、 ク ランプ 42 , 44 の下辺は相互に面する よ う に延設されている。 左右の断面 L型クランプ 42, 44 間にセンタ ク ランプ 4 6 が上下に対向する よ う に設けられる。 これらのク ラ ン プ部材 42 , 44, 46 は図 1 3 及び図 1 4 に示すよ う にレバーの自 由端 に設け られ、 ク ランプ機構 2 2 の開放時に自 由端側よ り プラスチッ クチューブの導入が可能である。 また、 図 1 3及び図 1 4 には示さ れないが、 図 1 6 B及ぴ図 16B ' に示すよ う にプラスチック チューブ の横移動のための補助ガイ ド 48 , 50 が断面 L型ク ラ ンプ 42 , 44 の 外側に設置される。 また、 ク ラ ンプ機構に半円形内面を有する上下 の半割型 5 2 も設置される。 尚、 移動部材 2 8及ぴそれに設置され る電熱線カ ツタ 3 0及び赤外線加熱器 3 2 の構造は第 2実施形態と 同様であるため図 1 3 において同一機能の部品に同一参照符号を付 し、 その説明は省略する。 FIGS. 13 to 16H show a third embodiment, which is the same as the second embodiment in that the heating parts of the heating wire cutter and the infrared heater are shared by the left and right plastic tubes. It is. However, the roller pair in the second embodiment is not used, and a clamp mechanism having an L-shaped cross section is used instead. That is, the clamp mechanism 40 includes upper and lower clamp members 42 on the left and upper and lower clamps 44 on the right. The clamps 42 and 44 have an L-shaped cross section, and the clamps 42 and The lower side of 44 extends to face each other. A center clamp 46 is provided between the left and right L-shaped clamps 42 and 44 so as to face vertically. These clamp members 42, 44, 46 are provided at the free end of the lever as shown in FIGS. 13 and 14, and when the clamp mechanism 22 is opened, the plastic tube is higher than the free end side. Can be introduced. Although not shown in FIGS. 13 and 14, auxiliary guides 48 and 50 for lateral movement of the plastic tube are provided with L-shaped cross sections as shown in FIGS. 16B and 16B ′. It is installed outside the pumps 42 and 44. In addition, upper and lower halves 52 having semicircular inner surfaces are installed in the clamp mechanism. Since the structures of the moving member 28 and the heating wire cutter 30 and the infrared heater 32 mounted thereon are the same as those in the second embodiment, the same reference numerals are given to the parts having the same functions in FIG. The description is omitted.
以下、 第 3 の実施形態におけるプラスチッ クチューブの切断及び 接続作業について説明する と、 第 1 段階を示す図 1 5 Aにおいては 上下のク ラ ンプ機構 4 0 は開かれた準備状態である。  Hereinafter, the cutting and connecting work of the plastic tube according to the third embodiment will be described. In FIG. 15A showing the first stage, the upper and lower clamp mechanisms 40 are in an opened ready state.
次の段階を示す図 1 5 B では上下の開かれたク ラ ンプ機構 4 0 間 にプラスチックチューブ 3 が導入される。  In the next step, FIG. 15B, the plastic tube 3 is introduced between the open and closed clamp mechanisms 40.
次の段階を示す図 1 5 Cではク ラ ンプ機構 4 0 の う ち、 上下のセ ンタ ク ラ ンプ 4 6 が矢印 f のよ う に接近方向に移動され、 センタ ク ラ ンプ 4 6 に当接するプラスチッ ク チューブ 3 の部分は平坦に押し 潰される。  In FIG. 15C, which shows the next stage, the upper and lower center clamps 46 of the clamp mechanism 40 are moved in the approaching direction as indicated by arrow f, and hit the center clamp 46. The area of the plastic tube 3 that comes into contact is crushed flat.
次の段階を示す図 1 5 Dではセンタ ク ランプ 4 6 による ク ラ ンプ 状態を維持しつつ左右の上下のサイ ドク ランプ 4 2 がそれぞれ矢印 f ' のよ う に対向方向に移動され、 左右のサイ ドク ラ ンプ 42, 44 に当 接するプラスチックチューブ 3 の部分も平坦に押し潰される。 サイ ドク ランプ 42, 44を L形状とする こ と によ り 第 2 の実施例のよ う な ローラによ る しごき作用を行う こ と なく 単なるク ラ ンプ動作だけで プラスチッ ク の被切断部における液体を丸断面部側に確実に移行さ せ、 切断部における液体の残留を防止する こ とができ る。  In Fig. 15D, which shows the next stage, the left and right and left and right side clamps 42 are moved in the opposite directions as indicated by the arrow f ', respectively, while maintaining the clamped state by the center clamp 46. The portion of the plastic tube 3 that abuts the side clamps 42 and 44 is also crushed flat. By making the side clamps 42 and 44 L-shaped, the ironing action by the rollers as in the second embodiment is not performed, and only the clamping operation is performed at the plastic cutting section. The liquid can be reliably transferred to the round cross section, and the liquid can be prevented from remaining at the cutting section.
次の段階を示す図 1 5 Eではプラスチッ クチューブ 3 を把持した 左右のサイ ドク ランプ 42 , 44 は矢 a l 印のよ う に相互に離間方向に 幾分移動され、 サイ ドク ラ ンプ 42 , 44 間に把持されたプラスチッ ク チューブ 3 は緊張を受ける。 そ して、 図 1 3 の後退位置にあった支 持部材 2 8 が同図の矢印 d l の方向に移動され、 その結果、 電熱線力 ッ タ 3 0 はプラスチック チューブ 3 に対して矢印 d l の方向(図 1 5 Eの紙面直交方向) に移動され、 その結果、 プラスチックチューブ 3 は溶融切断される。 切断によ り プラスチックチューブ 3 の緊張は 開放され、 その弾性下で切断端は円形の状態に復帰される。 切断さ れた端部を 6, 6A にて示す。 In Fig. 15E, which shows the next stage, the left and right side clamps 42, 44 holding the plastic tube 3 are slightly moved in the direction away from each other as indicated by the arrows, and the distance between the side clamps 42, 44 is increased. The plastic tube 3 gripped by the tube receives tension. Then, the support member 28 at the retracted position in FIG. 13 is moved in the direction of the arrow dl in the same figure, and as a result, the heating wire power 30 is moved in the direction of the arrow dl with respect to the plastic tube 3. In the direction (perpendicular to the paper plane in Fig. 15E), and as a result, the plastic tube 3 is melt-cut. The cutting releases the tension of the plastic tube 3, and the cut end returns to a circular state under its elasticity. Cut The damaged end is indicated by 6, 6A.
次の段階を示す図 1 5 Fでは支持部材 2 8 は図 1 3 の矢印 dl 方 向 (図 1 5 F において紙面に交差方向) に更に前進され、 ニク ロ ム 線を平面コイル状に卷回してなる加熱部 3 2がプラスチッ クチュー ブ 3 の切断端 6, 6Aに対面せしめ られる。 そして、 加熱部 3 2 を構成 するニク ロ ム線に通電する こ と によ り プラスチッ ク チューブ 3 の 切断端部 6, 6Aの内側面及び端面は加熱溶融状態を呈する。  In FIG. 15F, which shows the next stage, the supporting member 28 is further advanced in the direction of arrow dl in FIG. 13 (in the direction crossing the paper in FIG. 15F), and the nickel wire is wound into a planar coil. The heated section 32 is made to face the cut ends 6 and 6A of the plastic tube 3. Then, by energizing the nickel wire constituting the heating section 32, the inner surfaces and the end surfaces of the cut ends 6, 6A of the plastic tube 3 exhibit a heated molten state.
次の段階を示す図 1 5 Gではセンタ ク ランプ 4 6 は相互に向き合 う方向に移動され、 プラスチッ クチューブ 3 の切断端 6, 6'が平坦 状に圧潰され、 これよ り プラスチッ クチューブ 3 の端部における溶 融部 13, 13' における対向内周面が相互に密接され溶着に至り 、 封 止端部 5, 5' (図 2参照) が形成される。  In the next step, FIG. 15G, the center clamps 46 are moved towards each other, the cut ends 6, 6 'of the plastic tube 3 are crushed flat, and the plastic tube 3 The opposing inner peripheral surfaces of the fused portions 13 and 13 'at the ends are brought into close contact with each other and welded to form sealed ends 5, 5' (see FIG. 2).
最後の段階を示す図 1 5 Hではサイ ドク ランプ 42, 44及びセンタ ク ラ ンプ 4 6 が開かれ、 プラスチッ クチューブ 3 の切断工程が完了 する。  In FIG. 15H showing the last stage, the side clamps 42 and 44 and the center clamp 46 are opened, and the cutting process of the plastic tube 3 is completed.
次に、 第 3 の実施形態についてプラスチックチューブ 3, 3A の接 続作業の詳細について図 1 6 八〜図 1 6 Hを参照して段階を追って 説明する、 図 1 6 Aは第 1 段階を示し、 上下のク ラ ンプ機構 4 0 が 開かれたと ころを示す。  Next, the details of the connection work of the plastic tubes 3 and 3A according to the third embodiment will be described step by step with reference to FIGS. 168 to 16H. FIG. 16A shows the first step. This indicates that the upper and lower clamp mechanisms 40 have been opened.
次の段階では図 1 6 B に示すよ う にプラスチッ クチューブ 3 がガ ィ ド 4 8 によ り案内されつつ矢印 mのよ う に左側から移動してきて 患者の腹腔からのプラスチッ クチューブ 3 の封止端部 5 が左側のク ラ ンプ 4 2 間から導入され、 平坦化された封止端部 5 がス ト ツパ 6 0 に当接する こ と によ り位置決め され、 右側のク ランプ 4 4 と整列 位置される。 これと 同時に図 16B' に示すよ う に、 プラスチックチュ ーブ 3 Aがガイ ド 5 0 によ り 案内されしつつ矢印 mのよ う に右側か ら移動してきて、 透析液パッ クからのプラスチッ クチューブ 3 Aの 封止端部 5 Aが右側のク ラ ンプ 4 4 間から導入され、 ス ト ッパ 6 2 に当接する こ と によ り位置決めされ、 平坦化された封止端部 5 Aが 左側のク ラ ンプ 4 2 と整列位置される。 図 1 3及び図 1 4 において 仮想線 P はプラスチックチューブ 3 のク ランプ状態を示し、 仮想線 PA はプラスチッ クチューブ 3 Aのク ラ ンプ状態を示す。 In the next stage, as shown in Fig. 16B, the plastic tube 3 moves from the left side as shown by the arrow m while being guided by the guide 48, and seals the plastic tube 3 from the patient's abdominal cavity. The end 5 is introduced from between the left clamps 42, and the flattened sealing end 5 is positioned by abutting the stopper 60, and the right clamp 44 and the right clamp 44 are positioned. Aligned. At the same time, as shown in FIG. 16B ', the plastic tube 3A moves from the right side as indicated by the arrow m while being guided by the guide 50, and the plastic tube from the dialysate pack is moved. Tube 3A The sealing end 5A is introduced from between the right clamps 44 and positioned by contacting the stopper 62, and the flattened sealing end 5A is positioned on the left clamp. Aligned with lamp 42. In FIGS. 13 and 14, the phantom line P indicates the clamped state of the plastic tube 3, and the phantom line PA indicates the clamped state of the plastic tube 3A.
次の段階 を示す図 1 6 Cでは上下のセンタ ク ラ ンプ 4 6 が接近 移動され、 封止端部 5 に連なるプラスチックチューブ 3 の部分を平 坦に押し潰し、 同時にセンタ ク ラ ンプ 4 6 は図 16C 'に示すよ う に封 止端部 5 Aに連なるプラスチッ クチューブ 3 Aの部分を平坦に押し 潰する。  In the next step, Figure 16C, the upper and lower center clamps 46 are moved closer together, flattening the portion of the plastic tube 3 connected to the sealing end 5, and at the same time the center clamp 46 As shown in Fig. 16C ', crush flat the plastic tube 3A connected to the sealed end 5A.
次の段階では図 1 6 Dのよ う に左側の断面 L型ク ラ ンプ 4 2 が矢 印 f のよ う に接近方向に移動され、 センタ ク ランプ 4 6 によ り ク ラ ンプされた部分に隣接するプラスチッ クチューブ 3 の部分を平坦に 押し潰し、 同時に図 16D 'に示すよ う に右側の断面 L型ク ラ ンプ 4 4 が矢印 f のよ う に接近方向に移動され、 センタク ランプ 4 6 によ り ク ランプされた部分に隣接するプラスチックチューブ 3 Aの部分を 平坦に押し潰し、 そのため、 ク ランプ 42, 44 よ り 封止端部 5 , 5A 側のプラスチッ クチューブは平坦に押し潰され、 液体は丸断面部に 移行され切断部における内部の液体の残留を排除する こ と ができ る c 次の段階を示す図 1 6 Eでは、 左右の断面 L形ク ラ ンプ 42 , 44 は矢印 a 方向に幾分離間方向に移動され、 ク ランプ 42 , 44 間におい てプラスチックチューブ 3 , 3A は緊張を受ける。 そして、 支持部材 2 8 が図 1 3 の矢印 d l方向に前進され、電熱カ ツタ 3 0 はプラスチ ッ クチューブ 3 , 3A と交差方向に移動され、 電熱カ ツタ 3 0 によ り 最初にプラスチックチューブ 3 Aが次いでプラスチッ クチューブ 3 が切断される。 In the next stage, as shown in Fig. 16D, the L-shaped clamp 42 on the left side is moved in the approaching direction as shown by the arrow f, and the portion clamped by the center clamp 46 The plastic tube 3 adjacent to the plastic tube 3 is crushed flat, and at the same time, as shown in FIG. 16D ', the right cross-sectional L-shaped clamp 44 is moved in the approaching direction as indicated by the arrow f, and the center clamp 4 6 The portion of the plastic tube 3A adjacent to the portion clamped by the flattened portion is crushed flat, so that the plastic tubes on the sealing end portions 5 and 5A side by the clamps 42 and 44 are flattened and crushed. the liquid in Fig. 1 6 E showing the interior of the c following steps that can have a this to eliminate residual of the liquid in the cut portion is migrated to a round cross section, the left and right cross-section L Katachiku lamp 42, 44 is an arrow a Moved in the direction between two directions, clamps 42 and 44 Plastic tube 3 Te smell, 3A is subjected to tension. Then, the supporting member 28 is advanced in the direction of the arrow dl in FIG. 13, and the electric heating cutter 30 is moved in a direction crossing the plastic tubes 3 and 3A. A then plastic tube 3 is cut.
図 1 6 F において切断後のプラスチックチューブ 3, 3A を示し、 切断によ り 緊張が解除されるためプラスチッ クチューブ 3, 3A はそ の弾性によ り 開 口端 6, 6Aは円形状に復帰される。 この後、 ク ラ ン プ 42, 44 を独立的に図 1 6 F の紙面に直交する方向に移動させ、 プ ラスチッ ク チューブ 3, 3Aはその弾性によ り 開口端 6, 6A を整列位 置させる。 図 1 3 で仮想線 P'はプラスチッ クチューブ 3, 3Aが最終 的に軸線方向に整列した状態を示し、 仮想線 P'のよ う に位置するプ ラスチッ ク チューブ 3, 3Aの上方に成形用の半割型 5 2が位置して いる こ と がわかる。 この工程は第 2 の実施形態における図 12E及び 図 12E'から図 12F及び図 12F'の動作と 同様である。 そして、 図 1 3 における支持部材 2 8 の同図矢印 dl 方向における更なる直線移動 によ り 、 赤外線加熱器の加熱部 3 2 をプラスチ ッ クチューブ 3, 3A の切断端 6, 6A に正対して位置させる。 そ して、 通電を行 う こ と に よ り 加熱部 3 2 は赤熱せしめ られ、 これによ り 発生せしめ られる赤 外線によ り プラスチックチューブ 3, 3A の端部内側面及び端面は加 熱溶融状態を呈する。 Figure 16F shows the plastic tubes 3 and 3A after cutting. Since the tension is released by the cutting, the elasticity of the plastic tubes 3, 3A causes the open ends 6, 6A to return to a circular shape. Thereafter, the clamps 42 and 44 are independently moved in a direction perpendicular to the plane of FIG. 16F, and the elasticity of the plastic tubes 3 and 3A aligns the open ends 6 and 6A. Let it. In Fig. 13, the phantom line P 'indicates that the plastic tubes 3 and 3A are finally aligned in the axial direction, and the plastic tube 3 and 3A is located above the plastic tubes 3 and 3A located along the imaginary line P'. It can be seen that the half mold 52 is located. This step is the same as the operation of FIGS. 12E and 12E ′ to FIGS. 12F and 12F ′ in the second embodiment. Further, by further linear movement of the support member 28 in FIG. 13 in the direction of the arrow dl, the heating section 32 of the infrared heater is directly opposed to the cut ends 6 and 6A of the plastic tubes 3 and 3A. Position. The energization causes the heating part 32 to glow red, and the infrared rays generated by this cause the inner and inner surfaces of the ends of the plastic tubes 3, 3A to be heated and melted. Present.
次の段階を示す図 1 6 Gにおいては、 図 7 A及ぴ図 7 B と 同様な 半円形の内周面を有した上下の割型 5 2 によ り プラスチッ クチュー ブ 3, 3A の切断端 6, 6Aを上下よ り挟みつつ、 左右の断面: L形ク ラ ンプ 4 2 を矢印 al のよ う に接近方向に移動させ、上下の型 5 2 の合 体時に形成される 円形断面の成形空洞 3 8 に向けてプラスチッ クチ ユ ーブ 3, 3Aの切断端 6, 6A を相互に向き合う よ う に移動せしめ、 赤外線加熱による溶融部の突当溶着を行わしめる。  In Fig. 16G, which shows the next stage, the cut ends of the plastic tubes 3, 3A are formed by the upper and lower split molds 52 having semicircular inner peripheral surfaces similar to those in Figs. 7A and 7B. The left and right cross section: L-shaped clamp 42 is moved in the approaching direction as indicated by arrow al while holding 6 and 6A from above and below, and the circular cross section formed when upper and lower dies 52 are combined is formed. The cut ends 6, 6A of the plastic tubes 3, 3A are moved toward the cavities 38 so as to face each other, and abutting welding of the molten portion by infrared heating is performed.
図 1 6 Hではは左右の断面 L状ク ラ ンプ 4 2 は上下に離間され、 中央の割型 5 2 が上下に開かれた状態を示し、 プラスチックチュー ブの切断端 6, 6A における加熱された端面同士は突当 られ、 溶融部 13, 13Aは相互に溶着し図 3 と 同様な熱溶着部 4 を形成する に至る。 以上説明 した第 3 の実施形態では断面 L形のク ランプ 4 2 の平坦 部によ り プラスチッ クチューブのク ラ ンプを してお り 、 回転な どの 複雑な動作を伴う こ と なく 単にク ラ ンプを接近させるだけでプラス チッ クチューブ内部の液体を絞る こ と ができ、 構成の単純化を図る こ とができ る メ リ ッ トがある。 変形実施形態 In Fig. 16H, the left and right cross-section L-shaped clamps 42 are separated vertically and the split mold 52 at the center is opened vertically, and is heated at the cut ends 6, 6A of the plastic tube. The welded portions 13 and 13A are welded to each other to form a heat-welded portion 4 similar to that shown in FIG. In the third embodiment described above, the clamp 42 having an L-shaped cross section is flat. The plastic tube is clamped in some parts, and the liquid inside the plastic tube can be squeezed simply by approaching the clamp without complicated operations such as rotation. There is an advantage that can be simplified. Modified embodiment
以上の第 1 〜第 3 の実施形態を通じて、 プラスチックチューブ 3 , 3A の接続時に端面溶着部の周囲に熱収縮性の肉薄のプラスチッ ク ス リ ーブを装着し、 溶着時の熱でプラスチッ クス リ ーブを熱収縮さ せ、 接続部の強化を図る こ とができ る。 以下この変形実施例を第 1 実施形態における図 6 G と の関連で説明するが、 第 2及び第 3 実施 例にも等し く 応用 し う る。 図 1 7 Aにおいて、 接続時の成形型は半 円形断面の上割型 5 4 と 同 じく 半円形断面の下割型 5 6 と から構成 される。 ク ラ ンプ 7, 8 でそれぞれク ラ ンプされたプラスチッ クチュ ープ 3 , 3A はその開 口端 6 , 6Aが赤外線によ る加熱を受けている も の とする。 下型 5 6 上には熱収縮性プラスチック素材で形成された 薄肉のス リ ーブ 5 8 が図示しない供給手段から供給されている。 こ の状態でク ラ ンプ 7 , 8 を矢印 a 2 のよ う に接近方向に移動させる こ と によ り 、 プラスチックチューブ 3 , 3A の加熱された開口端 6 , 6A はス リ ーブ 5 8 に導入され、 これと平行的に図 1 7 B に示すよ う に 上下の型 54 , 56 が矢印 f 方向に相互に型合わせせしめられ、 型 54 , 56間に形成される 円形空洞によ り 外周を規制されつつ、開口端 6 , 6A の当接によ り 端面同士は溶着され熱溶着部 4 を形成し、 同時にその 熱で外周側のス リ ーブ 5 8 が熱収縮する。 そのため、 図 1 8 に示す よ う に熱収縮したス リ ープ 5 8 で開 口端 6, 6Aの融着部 4 の周囲を 補強した構造が得られる。 図 1 7 A及び図 1 7 B に示すよ う に割型 54 , 56 はプラスチッ ク薄肉ス リ ーブ 5 8 と の対抗面が切 り 欠かれ両 端部 54 - 1 のみで接触される よ う にされ、 これによ り 割型 54, 56 が 接触時の熱の放散を最小に押え、 プラスチックチューブ 3 , 3 A の加 熱された開 口端 6 , 6Aが溶着される と き の熱でプラスチッ ク薄肉ス リ ーブ 5 8 の熱収縮を行わしめる よ う に している。 端面溶着部 4 の 外周を熱収縮ス リ ーブ 5 8 で包囲せしめる こ と によ り プラスチッ ク チューブ 3, 3 Aの端面熱溶着部の強度及び信頼性をよ り 高める こ と ができ る。 Through the first to third embodiments described above, when connecting the plastic tubes 3 and 3A, a thin heat-shrinkable plastic sleeve is attached around the welded end face, and the plastic sleeve is heated by welding. The heat-shrinkage of the tube can strengthen the connection. Hereinafter, this modified example will be described in relation to FIG. 6G in the first embodiment, but it is applied equally to the second and third examples. In FIG. 17A, the forming mold at the time of connection is composed of an upper mold half 54 having a semicircular cross section and a lower mold half 56 having the same semicircular cross section. The plastic tubes 3 and 3A clamped by the clamps 7 and 8, respectively, have their open ends 6 and 6A heated by infrared rays. On the lower mold 56, a thin sleeve 58 made of a heat-shrinkable plastic material is supplied from supply means (not shown). In this state, the heated open ends 6, 6A of the plastic tubes 3, 3A are moved to the sleeves 58, 8 by moving the clamps 7, 8 in the approaching direction as indicated by an arrow a2. In parallel with this, the upper and lower dies 54 and 56 are mutually matched in the direction of arrow f as shown in Fig. 17B, and a circular cavity is formed between the dies 54 and 56. While the outer circumference is regulated, the end faces are welded by the contact of the open ends 6 and 6A to form a heat-welded portion 4, and at the same time, the sleeve 58 on the outer circumference side thermally contracts due to the heat. Therefore, as shown in Fig. 18, a structure is obtained in which the periphery of the welded portion 4 at the open ends 6 and 6A is reinforced by the thermally contracted sleep 58. As shown in Fig. 17A and Fig. 17B, the split dies 54 and 56 are notched because the surface facing the plastic thin sleeve 58 is notched. Contact is made only at the end 54-1, so that the split dies 54, 56 minimize heat dissipation during contact and the heated open ends of the plastic tubes 3, 3 A The heat generated when 6, 6A is welded causes the plastic thin-walled sleeve 58 to thermally contract. By enclosing the outer periphery of the end welded portion 4 with the heat shrink sleeve 58, the strength and reliability of the end welded portions of the plastic tubes 3 and 3A can be further improved.
以上の実施形態において非接触型加熱器と しては電気ヒータによ る赤外線加熱であつたが、 これはあ く までも例示であ り 、 それ以外 の非接触加熱方式、 例えば熱風によ る加熱やレーザによる加熱を採 用する こ と ができ る。  In the above embodiments, the non-contact heater is infrared heating using an electric heater, but this is merely an example, and other non-contact heating methods, for example, hot air Heating or laser heating can be used.
また、 以上の実施形態ではク ランプされたプラスチックチューブ 3 , 3 A は固定で、 電熱線カ ツタ 9 , 30 の移動によ り プラスチッ ク チ ユ ーブ 3 , 3 A の切断を行っていたが、 プラスチッ クチューブ 3 , 3A の移動によ る切断も場合によっては可能であ り 、 要は電熱線カ ツ タ とプラスチッ クチューブと は交差方向の相対移動が可能であれば良 レヽ。  In the above embodiment, the clamped plastic tubes 3 and 3A are fixed, and the plastic heating tubes 3 and 3A are cut by moving the heating wire cutters 9 and 30. In some cases, cutting by moving the plastic tubes 3 and 3A is also possible. In short, it is good if the heating wire cutter and the plastic tube can be moved relative to each other in the cross direction.
前述のよ う に この実施形態における赤外線加熱器 10, 32はその高 温によ り プラスチッ クチューブの開 口端付近の雑菌を死滅させ雑菌 による汚染を防止する機能も達成するが、 さ らに万全を期するため 装置 1 0 0 に紫外線な どによる滅菌装置を組み込み、 封止ないしは 接続作業中におけるプラスチックチューブ 3 , 3Aへの雑菌進入排除 の万全を期する こ と ができ る。 産業上の利用分野  As described above, the infrared heaters 10 and 32 in this embodiment also achieve the function of killing various bacteria near the open end of the plastic tube and preventing contamination by the bacteria due to the high temperature. A sterilizing device using ultraviolet light or the like can be incorporated into the device 100 in order to ensure that the bacteria can be prevented from entering the plastic tubes 3 and 3A during the sealing or connection work. Industrial applications
この発明は腹膜透析及びその他血液透析や、 バイ オ技術における 培養液の処理などにおいて、 雑菌の進入を排除しつつプラスチッ ク チューブの切断、 封止、 接続などの処置が必要な場合に利用する と ができ る ものである。 The present invention eliminates the invasion of various bacteria in plastics in peritoneal dialysis, other hemodialysis, and treatment of culture in biotechnology, etc. It can be used when measures such as cutting, sealing, and connecting tubes are required.

Claims

請求の範囲 The scope of the claims
1. プラスチッ クチューブを切断するべく 処理する方法であって . プラスチッ クチューブを長手方向に緊張するべく 同方向に離間した 一対の部位間で扁平状にク ランプしつつ、 一対のク ラ ンプ部間で線 状発熱体をプラスチッ クチューブに交差する方向に移動させる こ と によ り プラスチッ クチューブを溶融切断する方法。 1. A method of processing a plastic tube to cut it. The plastic tube is clamped in a flat shape between a pair of parts spaced apart in the same direction in order to tension the plastic tube in the longitudinal direction, and between the pair of clamp portions. A method of melting and cutting a plastic tube by moving a linear heating element in a direction crossing the plastic tube.
2. プラスチッ クチューブの切断端部を封止するべく 処理する方 法であって、 プラスチッ クチューブを切断端部に近接して扁平状に ク ランプしつつ、 ク ラ ンプ部に近接したプラスチックチューブ端面 は開口 させ、 プラスチッ クチューブの少なく と も開口端よ り 臨まれ る 内周面を非接触式に溶融状態に至る まで加熱し、 プラスチッ ク チ ユ ーブ端部を外周側よ り圧潰する こ と によ り 対向内周面同士を溶着 せしめ、 これによ り プラスチックチューブの切断端部の封止を行 う 方法。  2. This is a method of treating the plastic tube in such a way that the cut end of the plastic tube is sealed, in which the plastic tube is flattened close to the cut end and the plastic tube end surface close to the clamp is closed. When the plastic tube is opened, at least the inner peripheral surface facing the open end of the plastic tube is heated in a non-contact manner until it reaches a molten state, and the plastic tube end is crushed from the outer peripheral side. A method in which the opposing inner peripheral surfaces are welded together to seal the cut end of the plastic tube.
3 . 一対のプラスチッ クチューブの切断端面を接続するべく 処理 する方法であって、 一対のプラスチッ クチューブを切断端面に近接 した部位を扁平状と しつつ端面は実質的に円形に開 口する よ う にク ラ ンプし、 一対のプラスチックチューブの少なく と も対向 した開 口 端面を非接触的に溶融状態に至るまで加熱し、 それぞれのプラスチ ッ クチューブをその外周を規制 しつつ相互に接近する方向に移動さ せる こ と によ り 対向 した開 口端面同士を当接 · 溶着させる方法。 3. A method of connecting the cut end faces of a pair of plastic tubes so that the portions close to the cut end faces of the pair of plastic tubes are made flat and the end faces are opened in a substantially circular shape. Clamps and heats at least the open end faces of the pair of plastic tubes in a non-contact manner until it reaches a molten state, and moves each plastic tube in a direction approaching each other while regulating the outer circumference. A method of abutting and welding opposing open end faces.
4. プラスチッ クチューブを切断するべく 処理する方法であって プラスチッ クチューブを長手方向に緊張するべく 同方向に離間した 一対の部位間で扁平状にク ランプしつつ、 一対のク ランプ部間で線 状発熱体と プラスチックチューブと を相対的に交差する方向に移動 させる こ と によ り プラスチッ クチューブを溶融切断する方法。 4. A method of processing to cut a plastic tube, in which the plastic tube is clamped in a flat shape between a pair of parts separated in the same direction to tension the plastic tube in the longitudinal direction, and is linear between a pair of clamp parts. A method of melting and cutting a plastic tube by moving a heating element and a plastic tube in a direction that intersects relatively.
5. プラスチッ クチューブの切断端部を封止するべく 処理する方 法であって、 プラスチッ クチューブを切断端部に近接して扁平状に ク ランプしつつ、 ク ラ ンプ部に近接したプラスチッ クチューブ端面 は開口 させ、 プラスチッ ク チューブの少な く と も 開口端よ り 臨まれ る内周面を非接触式に溶融状態に至る まで加熱し、 プラスチッ クチ ユ ーブ端部を外周側よ り 圧潰する こ と によ り 対向内周面同士を溶着 せしめ、 これによ り プラスチックチューブの切断端部の封止を行う 方法。 5. This is a method of treating the cut end of the plastic tube so as to seal it. The plastic tube is clamped flat near the cut end, and the end of the plastic tube close to the clamp is closed. Open the plastic tube, heat at least the inner surface of the plastic tube facing the open end until it reaches a molten state in a non-contact manner, and crush the end of the plastic tube from the outer side. A method in which opposing inner peripheral surfaces are welded to each other, thereby sealing the cut end of the plastic tube.
6. 一対のプラスチッ クチューブの切断端面を接続するべく 処理 する方法であって、 一対のプラスチッ クチューブを切断端面に近接 した部位を扁平状と しつつ端面は実質的に円形に開 口する よ う にク ラ ンプし、 一対のプラスチックチューブの少なく と も開口端面を非 接触的に溶融状態に至るまで加熱し、 一対のプラスチック チューブ の加熱された開口端面を対向させる共にそれぞれのプラスチッ クチ ユ ーブをその外周を規制 しつつ相互に接近する方向に移動させる こ と によ り 対向 した開 口端面同士を当接 · 溶着させる方法。  6. A method of connecting the cut end surfaces of a pair of plastic tubes so that the portions close to the cut end surfaces of the pair of plastic tubes are made flat and the end surfaces are opened in a substantially circular shape. Clamps and heats at least the open end surfaces of the pair of plastic tubes until it reaches a molten state in a non-contact manner, and makes the heated open end surfaces of the pair of plastic tubes face each other, and also applies the respective plastic tubes. A method of contacting and welding opposing open end faces by moving them in a direction approaching each other while regulating their outer circumferences.
7. プラスチッ クチューブの端部を封止するべく 処理する方法で あって、 プラスチッ クチューブをその長手方向に緊張するべく 同方 向に離間した一対の部位において外側から扁平にク ラ ンプし、 一対 のク ランプ部間において線状発熱体と プラスチッ クチューブと の交 差方向の相対移動によ り プラスチッ ク チューブを溶融状態下で切断 し、 切断端よ り 臨まれるプラスチッ クチューブの少な く と も内周部 分を非接触的に加熱し、 このプラスチッ クチューブを外側から圧潰 する こ と によ り 加熱内周部分同士を融着に至ら しめ、 これによ り プ ラスチック チューブの端部を封止する方法。  7. A method of treating the ends of a plastic tube in such a manner that the ends of the plastic tube are flattened from the outside at a pair of parts spaced apart in the same direction so as to be tensioned in the longitudinal direction, and a pair of the clamps is formed. The plastic tube is cut in a molten state by the relative movement of the linear heating element and the plastic tube in the cross direction between the lamps, and at least the inner peripheral part of the plastic tube that faces the cut end A non-contact heating of the plastic tube and crushing the plastic tube from the outside so that the heated inner peripheral portions are fused to each other, thereby sealing an end of the plastic tube.
8. 内部に液体を有したプラスチッ ク チューブの端部を封止する ぺく 処理する方法であって、 プラスチッ ク チューブをその長手方向 に緊張するべく 同方向に離間した一対の部位において外側から扁平 にク ラ ンプしつつク ラ ンプ部間の液体をク ラ ンプ部の外側における プラスチックチューブの部位に移行させ、 一対のク ラ ンプ部間にお いて線状発熱体と プラスチックチューブと の交差方向の相対移動に よ り プラスチッ クチューブを溶融状態下で切断し、 切断端よ り 臨ま れるプラスチッ クチューブの少なく と も内周部分を非接触的に加熱 し、 このプラスチッ クチューブを外側から圧潰する こ と によ り加熱 内周部分同士を融着に至ら しめ、 これによ り 内部に液体を有したプ ラスチックチューブの端部を封止する方法。 8. Sealing the end of the plastic tube with liquid inside it, a process of wrapping the plastic tube in the longitudinal direction The liquid between the clamp portions is transferred to the plastic tube portion outside the clamp portion while flattening the clamp from the outside at the pair of portions separated in the same direction so as to be strained on the pair of clamps. The plastic tube is cut in a molten state by the relative movement of the linear heating element and the plastic tube in the intersecting direction between the parts, and at least the inner peripheral part of the plastic tube facing the cut end is not in contact. The plastic tube is heated and crushed from the outside to cause fusion of the heated inner peripheral parts, thereby sealing the end of the plastic tube having a liquid inside. Method.
9. それぞれが一端で封止 された一対のプラスチ ッ クチューブを 接続するべく 処理する方法において、 一対のプラスチックチューブ をそれぞれの封止端部に近接した部位において扁平にク ランプする と共に、 ク ラ ンプ部よ り 封止端部側においてプラスチックチューブ を軸線方向に緊張し う る よ う に保持し、 線状発熱体と プラスチッ ク チューブと を交差方向において相対移動させプラスチックチューブ を切断する こ と によ り ク ラ ンプ部よ り 封止端部側のプラスチックチ ユ ーブの部分を切除する と共にプラスチッ クチューブの封止端部を 開 口 させ、 一対のプラスチックチューブの少なく と も開口端面を非 接触的に加熱し、 一対のプラスチッ ク チューブの前記加熱された開 口端面を軸線方向に対向させる と共に一対のプラスチックチューブ をその外周を規制しつつその軸線方向に相互に近接する方向に移動 させて、 一対のプラスチッ クチューブの加熱された開 口端面同士を 突き当てる こ と によ り 開 口端面同士を融着せしめる方法。  9. In a method of connecting a pair of plastic tubes, each of which is sealed at one end, a pair of plastic tubes are flattened at a position close to each sealed end, and the clamps are clamped. By holding the plastic tube so that it is tensioned in the axial direction on the sealed end side of the plastic tube, the linear heating element and the plastic tube are relatively moved in the cross direction to cut the plastic tube. The plastic tube at the sealing end side of the plastic tube is cut off and the sealing end of the plastic tube is opened, so that at least the open end surface of the pair of plastic tubes is non-contact. And the heated open end faces of the pair of plastic tubes are axially opposed to each other. The plastic tubing is moved in a direction close to each other in the axial direction while regulating its outer circumference, and the heated piercing end faces of a pair of plastic tubes are brought into contact with each other to fuse the piercing end faces. How to dress.
10. それぞれが一端で封止され、内部に液体を有する一対のプラ スチッ クチューブを接続するべく 処理する方法において、 それぞれ のプラスチックチューブを封止端部に近接した部位において扁平に ク ラ ンプしつつク ラ ンプ部に対し流体を封止端部から離間側に移行 させる と共に、 ク ラ ンプ部よ り 封止端部側においてプラスチッ クチ ユ ーブを軸線方向に緊張し う る よ う に保持し、 線状発熱体と プラス チッ クチューブと を相対的に交差方向に移動させプラスチッ クチュ ーブを切断する こ と によ り ク ランプ部よ り 封止端部側のプラスチッ クチューブの部分を切除する と共にプラスチッ ク チューブの封止端 部を開 口 させ、 一対のプラスチック チューブの少なく と も開 口端面 を非接触的に加熱し、 一対のプラスチックチューブを軸線方向に対 向 して位置させた状態においてプラスチックチューブの外周を規制 しつつ軸線方向に相互に近接する方向に移動させて、 一対のプラス チックチューブの加熱された開口端面同士を突き 当てる こ と によ り 開 口端面同士を融着せしめる方法。 10. A method of connecting a pair of plastic tubes, each of which is sealed at one end and having a liquid inside, by flattening each plastic tube at a location close to the sealed end. Fluid moves from the sealing end to the separation side to the clamp At the same time, the plastic tube is held so as to be tensioned in the axial direction on the sealing end side from the clamp portion, and the linear heating element and the plastic tube are relatively crossed. By moving and cutting the plastic tube, the plastic tube on the sealed end side from the clamp is cut off, and the sealed end of the plastic tube is opened to open a pair of plastic tubes. At least the open end faces are heated in a non-contact manner, and when a pair of plastic tubes are positioned in the axial direction, they move in a direction approaching each other in the axial direction while regulating the outer circumference of the plastic tubes. Then, the heated open end faces of a pair of plastic tubes are brought into contact with each other to fuse the open end faces together. .
1 1. 請求の範囲 1 0 の方法において、プラスチッ ク チューブの溶 着部の周囲を熱収縮プラスチック フ ィ ルムで包囲せしめる方法。  1 1. The method according to claim 10, wherein the welded portion of the plastic tube is surrounded by a heat-shrinkable plastic film.
12. プラスチッ ク チューブを切断するべく 処理する装置であつ て、 線状発熱体と 、 プラスチックチューブを長手方向に緊張させつ つ同方向に離間した一対の部位間で扁平状にク ラ ンプする ク ラ ンプ 手段と よ り 成り 、 ク ランプ手段に近接させて前記線状発熱体とブラ スチッ クチューブと の交差方向に相対移動させる こ と によ り プラス チッ ク チューブを溶融切断する こ と を装置。  12. A device for processing a plastic tube to cut it, which clamps a linear heating element and a flat tube between a pair of parts separated in the same direction while tensioning the plastic tube in the longitudinal direction. An apparatus for melting and cutting a plastic tube by relatively moving in a crossing direction of the linear heating element and the plastic tube in the vicinity of the clamp means, comprising a lamp means.
13. 内部に液体を有したプラスチック チューブを切断するべく 処理する装置であって、 線状発熱体と 、 プラスチック チューブを長 手方向に緊張させつつ同方向に離間 した一対の部位間で扁平状にク ラ ンプする ク ランプ手段と 、 ク ランプ部間の液体をク ラ ンプ部の外 側におけるプラスチッ クチューブの部位に移行せしめる手段と よ り 成 り 、 ク ランプ手段によ る ク ランプ部位間において前記線状発熱体 と プラスチックチューブと を交差方向に相対移動させる こ と によ り プラスチックチューブを溶融切断する こ と を装置。 13. A device that cuts a plastic tube that has a liquid inside. It is flat between a linear heating element and a pair of parts that are separated in the same direction while tensioning the plastic tube in the longitudinal direction. A clamp means for clamping, and means for transferring the liquid between the clamp parts to a portion of the plastic tube outside the clamp part, wherein the clamp means is provided between the clamp parts by the clamp means. This device melts and cuts the plastic tube by moving the linear heating element and the plastic tube relatively in the cross direction.
14. プラスチッ ク チューブの切断端部を封止するべく 処理する 装置であって、 プラスチッ クチューブをその切断端部を開 口 させた 状態でその開口部に近接して扁平状にク ランプする ク ランプ手段 と プラスチッ クチューブの少な く と も開 口端よ り 臨まれる内周面を非 接触式に溶融状態に至るまで加熱する加熱手段と 、 プラスチック チ ユ ーブ端部を外周側よ り 圧潰する よ う に保持する保持手段 と を備え プラスチッ クチューブの開 口端における対向溶融内周面を密着に至 らせるべく 保持し、 プラスチックチューブの切断端部を封止する こ と を装置。 14. A device for treating the cut end of a plastic tube to seal the cut end, wherein the plastic tube is clamped in a flat shape close to the opening with the cut end opened. Means and a heating means for heating at least the inner peripheral surface of the plastic tube facing the open end until it reaches a molten state, and crushing the end of the plastic tube from the outer peripheral side. And a holding means for holding the melted inner peripheral surface at the open end of the plastic tube so as to bring it into close contact, and sealing the cut end of the plastic tube.
15 . 一対のプラスチッ ク チューブの切断端面を接続するべく 処 理する装置であって、 一対のプラスチックチューブを切断端面に近 接した部位が扁平状 と な り かつ端面は実質的に円形に開口する よ う にク ラ ンプする ク ラ ンプ手段と 、 一対のプラスチッ クチューブの少 なく と も開 口端面を非接触的に溶融状態に至るまで加熱する加熱手 段と 、 プラスチッ ク チューブの外周を規制する規制手段と を備え、 プラスチッ クチューブの加熱された開口端面を軸線方向に対向させ た状態でそれぞれのプラスチックチューブをその外周を規制 しつつ 相互に接近する方向に移動させる こ と によ り 対向 した開口端面同士 を当接 · 溶着させる こ と を装置。  15. A device for connecting the cut end surfaces of a pair of plastic tubes so as to connect the cut end surfaces of the pair of plastic tubes, where the portion near the cut end surfaces is flat and the end surfaces are substantially circularly opened. A clamping means for clamping in such a manner, a heating means for heating at least the open end surfaces of the pair of plastic tubes until they reach a molten state, and regulating the outer periphery of the plastic tube. Regulating means, and the opposed openings by moving the plastic tubes in a direction approaching each other while regulating the outer circumference thereof with the heated opening end faces of the plastic tubes facing in the axial direction. A device that abuts and welds end faces.
16. プラスチッ ク チューブの端部を封止するべく 処理する装置 であって、 プラスチッ クチューブを長手方向に緊張させて同方向に 離間 した一対の部位にて扁平になる よ う に外側から ク ランプする ク ラ ンプ手段と、 線状発熱体と 、 一対のク ランプ部間においてプラス チックチューブと線状発熱体との交差方向の相対移動によ り それぞ れのク ランプ手段に近接した部位においてプラスチックチューブを 溶融状態下で切断する切断手段と、 切断端よ り 臨まれるプラスチッ クチューブの少なく と も内周部分を非接触的に加熱する加熱手段 と プラスチッ クチューブを外側から圧潰する こ と によ り 加熱内周部分 同士を融着に至ら しめ、 これによ り 液体収容部まで延びるプラスチ ッ クチューブの端部を封止する封止手段と を具備 したこ と を装置。 16. A device for treating the end of a plastic tube to seal it. The plastic tube is tensioned in the longitudinal direction and clamped from the outside so as to be flat at a pair of parts separated in the same direction. The clamp means, the linear heating element, and the plastic material at a position close to each of the clamp means due to the relative movement of the plastic tube and the linear heating element between the pair of clamp sections in the cross direction. Cutting means for cutting the tube in a molten state, and heating means for heating at least the inner peripheral portion of the plastic tube facing the cut end in a non-contact manner; And sealing means for sealing the ends of the plastic tube extending to the liquid storage portion by crushing the plastic tube from the outside to cause fusion of the heated inner peripheral portions to each other. This is the device.
17. 内部に液体を有したプラスチッ ク チューブの端部を封止す るべく 処理する装置であって、 プラスチッ クチューブを長手方向に 緊張させて同方向に離間 した一対の部位にて扁平になる よ う に外側 から ク ランプするク ラ ンプ手段と 、 ク ランプ部間の液体をク ランプ 部の外側におけるプラスチッ クチューブの部位に移行せしめる手段 と 、 線状発熱体と、 一対のク ラ ンプ部間においてプラスチッ クチュ 一ブと線状発熱体と の交差方向移動によ り ク ランプ手段の間におい てプラスチ ックチューブを溶融状態下で切断する切断手段と 、 切断 端よ り 臨まれるプラスチッ クチューブの少なく と も内周部分を非接 触的に加熱する加熱手段と 、 プラスチッ クチューブを外側から圧潰 する こ と に よ り加熱内周部分同士を融着に至ら しめ、 これによ り 液 体収容部まで延びるプラスチックチューブの端部を封止する封止手 段と を具備 したこ と を装置。  17. A device that seals the end of a plastic tube that has a liquid inside. The plastic tube is stretched in the longitudinal direction and flattened at a pair of parts separated in the same direction. Clamp means for clamping from the outside as described above, means for transferring the liquid between the clamp parts to the plastic tube part outside the clamp part, a linear heating element, and a means for clamping between the pair of clamp parts. Cutting means for cutting the plastic tube in a molten state between the clamping means by the crosswise movement of the plastic tube and the linear heating element, and at least the inside of the plastic tube facing the cut end. Heating means for heating the peripheral part in a non-contact manner and crushing the plastic tube from the outside to fuse the heated inner peripheral parts to each other And a sealing means for sealing the end of the plastic tube extending to the liquid container.
18. それぞれが一端で封止 された一対のプラスチ ッ ク チュ一ブ を接続するべく 処理する装置において、 一対のプラスチッ クチュー ブをその封止端部に近接した部位において扁平にク ラ ンプする手段 と 、 ク ランプ部から延びて く るプラスチッ クチューブの封止端部を 軸線方向において緊張し う る よ う に保持する保持手段と、 線状発熱 体と 、 プラスチックチューブと線状発熱体と を交差方向に相対移動 させる こ と によ り それぞれのク ランプ部に近接した部位においてプ ラスチック チューブを溶融状態下で切断する切断手段と、 一対のプ ラスチック チューブの少な く と も開 口端を非接触的に加熱する加熱 手段と 、 一対のプラスチッ クチューブをその外周を規制する外周規 制手段と 、 一対のプラスチッ クチューブの加熱された開口端を軸線 方向に対向 させた状態において前記外周規制手段によ り 外周を規制 しつつ一対のプラスチックチューブを軸線方向に相互に近接する方 向に移動せしめる こ と によ り プラスチ ックチューブの開 口端同士を 溶着接続せしめる接続手段と を具備 したこ と を装置。 18. In a device for processing a pair of plastic tubes, each sealed at one end, means to clamp the pair of plastic tubes flat at a location adjacent to the sealed end. And a holding means for holding the sealing end of the plastic tube extending from the clamp so as to be tensioned in the axial direction, and intersecting the linear heating element, the plastic tube and the linear heating element. A cutting means that cuts the plastic tube in a molten state at a position close to each clamp part by making relative movement in the direction, and at least the open end of a pair of plastic tubes is not in contact with the open end Heating means for electrically heating, outer circumference regulating means for regulating the outer circumference of the pair of plastic tubes, and a pair of plastic tubes The heated open end axis When the pair of plastic tubes are moved in a direction approaching each other in the axial direction while restricting the outer periphery by the outer periphery restricting means in a state where they are opposed to each other in the direction, the open ends of the plastic tubes are welded to each other. A connection means for connecting.
19. それぞれが一端で封止され、内部に流体を有した一対のプラ スチッ クチューブを接続するべく 処理する装置において、 一対のプ ラスチッ ク チューブをその封止端部に近接した部位において扁平に ク ランプする手段と 、 封止端からク ラ ンプ部までの液体を封止端か ら離間側に移行させる手段と、 ク ラ ンプ部から延びてく るプラスチ ッ クチューブの封止端部を軸線方向において緊張し う る よ う に保持 する保持手段と、 線状発熱体と、 プラスチックチューブと線状発熱 体と を交差する方向に相対移動させる こ と によ り それぞれのク ラ ン プ部に近接した部位においてプラスチッ クチューブを溶融状態下で 切断する切断手段と 、 一対のプラスチックチューブの少な く と も 開 口端を非接触的に加熱する加熱手段 と 、 一対のプラスチッ クチュー ブをその外周を規制する外周規制手段 と、 加熱された開口端が対向 位置した一対のプラスチッ クチューブを前記外周規制手段内におい て軸線方向に相互に近接する方向に移動せしめる こ と によ り プラス チック チューブの開 口端同士を溶着接続せしめる接続手段と を具備 したこ と を装置。  19. In a device for processing to connect a pair of plastic tubes, each sealed at one end and having a fluid inside, the pair of plastic tubes are flattened at a position close to the sealed end. Means for ramping, means for transferring the liquid from the sealed end to the clamp part to the side away from the sealed end, and means for axially extending the sealed end of the plastic tube extending from the clamp part. The holding means for holding them in tension, the linear heating element, and the relative movement of the plastic tube and the linear heating element in the direction intersecting with each other make it possible to approach each clamp part. Cutting means for cutting the plastic tube at the site in a molten state, and heating means for heating at least the open ends of the pair of plastic tubes in a non-contact manner; Outer peripheral regulating means for regulating the outer periphery of a pair of plastic tubes, and moving a pair of plastic tubes having heated open ends facing each other in the axial direction within the outer peripheral regulating means. And a connecting means for welding and connecting the open ends of the plastic tube.
20. 請求の範囲 1 9 の装置において、プラスチック チューブの溶 着部の外周を熱収縮性のプラスチッ ク ス リ ーブで包囲せしめる手段 20. The apparatus according to claim 19, wherein the outer periphery of the welded portion of the plastic tube is surrounded by a heat-shrinkable plastic sleeve.
- を更に具備した装置。 A device further comprising:
21. プラスチックチューブの処理を行 う ための装置であって、プ ラスチック チューブを扁平にク ランプするための離間した一対のク ラ ンプ手段と、 一対のク ラ ンプ手段間に配置され、 それぞれのク ラ ンプ手段から延びてく るプラスチッ ク チューブを長手方向に緊張す るべく 保持する保持手段と 、 線状発熱体と、 各ク ランプ手段に近接 して線状発熱体とプラスチックチューブを相対的に交差方向に移動 させプラスチッ クチューブを溶融状態下で切断する切断手段と 、 プ ラスチッ ク チューブの内周及び端面を非接触的に加熱する加熱手段 と を具備したこ と を装置。 21. A device for processing a plastic tube, comprising a pair of spaced clamp means for flattening a plastic tube, and a pair of clamp means arranged between each pair of clamp means. Tension the plastic tube extending from the clamping means in the longitudinal direction Holding means for holding as much as possible; a linear heating element; and cutting means for moving the linear heating element and the plastic tube relatively close to each clamp means in the cross direction to cut the plastic tube in a molten state. A heating means for heating the inner periphery and the end face of the plastic tube in a non-contact manner.
22. 請求の範囲 2 1 の装置において、前記加熱手段は被加熱部に 照射される赤外線を発生する赤外線発生手段である こ と を装置。  22. The apparatus according to claim 21, wherein said heating means is an infrared ray generating means for generating an infrared ray to be radiated to a portion to be heated.
23 . 請求の範囲 2 2 の装置において、赤外線発生手段は電熱式ヒ ータである こ と を装置。  23. The apparatus according to claim 22, wherein the infrared ray generating means is an electrothermal heater.
24. 請求の範囲 2 1 の装置において、溶着時のプラスチッ クチュ ーブの外周を規制する規制手段を更に具備したこ と を装置。  24. The apparatus according to claim 21, further comprising a regulating means for regulating an outer periphery of the plastic tube at the time of welding.
25. 請求の範囲 2 4 の装置において、前記外周規制手段は合体時 にプラスチッ クチューブの外径に見合った内径の筒状の空間を形成 する割型である こ と を装置。  25. The apparatus according to claim 24, wherein said outer circumference restricting means is a split mold that forms a cylindrical space having an inner diameter corresponding to the outer diameter of the plastic tube when united.
26. 請求の範囲 2 1 の装置において、プラスチックチューブは内 部に液体を有してお り 、 保持手段によ り 保持されたプラスチッ ク チ ユ ーブの部位における液体をク ランプ部の外側におけるプラスチッ クチューブの部位に移行せしめる手段を具備したこ と を装置。  26. In the apparatus according to claim 21, the plastic tube has a liquid inside, and the liquid at the portion of the plastic tube held by the holding means is discharged outside the clamp portion. The device has a means to transfer to the plastic tube.
27. 請求の範囲 2 6 の装置において、前記移行手段はプラスチッ クチューブを把持する一対のク ラ ンプ部材と、 ク ランプ部材を横移 動させる手段と を具備している こ と を装置。  27. The apparatus according to claim 26, wherein said transition means includes a pair of clamp members for gripping the plastic tube, and means for laterally moving the clamp member.
28. 請求の範囲 2 6 の装置において、前記移行手段はプラスチッ クチューブ把持する一対のローラ と 、 ローラを横移動させる手段と を具備している こ と を装置。  28. The apparatus according to claim 26, wherein said transition means includes a pair of rollers for holding the plastic tube, and means for moving the rollers laterally.
29. 請求の範囲 2 6 の装置において、前記移行手段は底面がプラ スチッ クチューブに当接する実質的に断面 L形状の一対のク ランプ 部材である こ と を装置。  29. The apparatus according to claim 26, wherein said transition means is a pair of clamp members having a substantially L-shaped cross section whose bottom faces abut the plastic tube.
PCT/JP2002/001174 2001-02-21 2002-02-13 Plastic tube processing method and device WO2002066098A1 (en)

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