DE19608522A1 - Welding and sealing unit forming e.g. filled pouches from plastic lay-flat tubing - Google Patents

Welding and sealing unit forming e.g. filled pouches from plastic lay-flat tubing

Info

Publication number
DE19608522A1
DE19608522A1 DE19608522A DE19608522A DE19608522A1 DE 19608522 A1 DE19608522 A1 DE 19608522A1 DE 19608522 A DE19608522 A DE 19608522A DE 19608522 A DE19608522 A DE 19608522A DE 19608522 A1 DE19608522 A1 DE 19608522A1
Authority
DE
Germany
Prior art keywords
welding
stripping
film tube
jaw
stripping device
Prior art date
Legal status (The legal status 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 status listed.)
Withdrawn
Application number
DE19608522A
Other languages
German (de)
Inventor
Dieter Kundt
Walter Dr Baur
Current Assignee (The listed assignees may be inaccurate. Google has not performed a legal analysis and makes no representation or warranty as to the accuracy of the list.)
Rovema GmbH
Original Assignee
Rovema GmbH
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 Rovema GmbH filed Critical Rovema GmbH
Priority to DE19608522A priority Critical patent/DE19608522A1/en
Publication of DE19608522A1 publication Critical patent/DE19608522A1/en
Withdrawn legal-status Critical Current

Links

Classifications

    • B—PERFORMING OPERATIONS; TRANSPORTING
    • B29—WORKING OF PLASTICS; WORKING OF SUBSTANCES IN A PLASTIC STATE IN GENERAL
    • B29C—SHAPING OR JOINING OF PLASTICS; SHAPING OF MATERIAL IN A PLASTIC STATE, NOT OTHERWISE PROVIDED FOR; AFTER-TREATMENT OF THE SHAPED PRODUCTS, e.g. REPAIRING
    • B29C65/00—Joining or sealing of preformed parts, e.g. welding of plastics materials; Apparatus therefor
    • B29C65/02—Joining or sealing of preformed parts, e.g. welding of plastics materials; Apparatus therefor by heating, with or without pressure
    • B—PERFORMING OPERATIONS; TRANSPORTING
    • B29—WORKING OF PLASTICS; WORKING OF SUBSTANCES IN A PLASTIC STATE IN GENERAL
    • B29C—SHAPING OR JOINING OF PLASTICS; SHAPING OF MATERIAL IN A PLASTIC STATE, NOT OTHERWISE PROVIDED FOR; AFTER-TREATMENT OF THE SHAPED PRODUCTS, e.g. REPAIRING
    • B29C65/00—Joining or sealing of preformed parts, e.g. welding of plastics materials; Apparatus therefor
    • B29C65/74—Joining 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
    • B29C65/745—Joining 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
    • B—PERFORMING OPERATIONS; TRANSPORTING
    • B29—WORKING OF PLASTICS; WORKING OF SUBSTANCES IN A PLASTIC STATE IN GENERAL
    • B29C—SHAPING OR JOINING OF PLASTICS; SHAPING OF MATERIAL IN A PLASTIC STATE, NOT OTHERWISE PROVIDED FOR; AFTER-TREATMENT OF THE SHAPED PRODUCTS, e.g. REPAIRING
    • B29C66/00—General aspects of processes or apparatus for joining preformed parts
    • B29C66/01—General aspects dealing with the joint area or with the area to be joined
    • B29C66/05—Particular design of joint configurations
    • B29C66/10—Particular design of joint configurations particular design of the joint cross-sections
    • B29C66/11—Joint 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
    • B29C66/112—Single lapped joints
    • B29C66/1122—Single lap to lap joints, i.e. overlap joints
    • B—PERFORMING OPERATIONS; TRANSPORTING
    • B29—WORKING OF PLASTICS; WORKING OF SUBSTANCES IN A PLASTIC STATE IN GENERAL
    • B29C—SHAPING OR JOINING OF PLASTICS; SHAPING OF MATERIAL IN A PLASTIC STATE, NOT OTHERWISE PROVIDED FOR; AFTER-TREATMENT OF THE SHAPED PRODUCTS, e.g. REPAIRING
    • B29C66/00—General aspects of processes or apparatus for joining preformed parts
    • B29C66/40—General aspects of joining substantially flat articles, e.g. plates, sheets or web-like materials; Making flat seams in tubular or hollow articles; Joining single elements to substantially flat surfaces
    • B29C66/41—Joining substantially flat articles ; Making flat seams in tubular or hollow articles
    • B29C66/43—Joining a relatively small portion of the surface of said articles
    • B29C66/431—Joining the articles to themselves
    • B29C66/4312—Joining the articles to themselves for making flat seams in tubular or hollow articles, e.g. transversal seams
    • B—PERFORMING OPERATIONS; TRANSPORTING
    • B29—WORKING OF PLASTICS; WORKING OF SUBSTANCES IN A PLASTIC STATE IN GENERAL
    • B29C—SHAPING OR JOINING OF PLASTICS; SHAPING OF MATERIAL IN A PLASTIC STATE, NOT OTHERWISE PROVIDED FOR; AFTER-TREATMENT OF THE SHAPED PRODUCTS, e.g. REPAIRING
    • B29C66/00—General aspects of processes or apparatus for joining preformed parts
    • B29C66/70—General aspects of processes or apparatus for joining preformed parts characterised by the composition, physical properties or the structure of the material of the parts to be joined; Joining with non-plastics material
    • B29C66/73—General aspects of processes or apparatus for joining preformed parts characterised by the composition, physical properties or the structure of the material of the parts to be joined; Joining with non-plastics material characterised by the intensive physical properties of the material of the parts to be joined, by the optical properties of the material of the parts to be joined, by the extensive physical properties of the parts to be joined, by the state of the material of the parts to be joined or by the material of the parts to be joined being a thermoplastic or a thermoset
    • B29C66/737—General aspects of processes or apparatus for joining preformed parts characterised by the composition, physical properties or the structure of the material of the parts to be joined; Joining with non-plastics material characterised by the intensive physical properties of the material of the parts to be joined, by the optical properties of the material of the parts to be joined, by the extensive physical properties of the parts to be joined, by the state of the material of the parts to be joined or by the material of the parts to be joined being a thermoplastic or a thermoset characterised by the state of the material of the parts to be joined
    • B29C66/7373—Joining soiled or oxidised materials
    • B—PERFORMING OPERATIONS; TRANSPORTING
    • B29—WORKING OF PLASTICS; WORKING OF SUBSTANCES IN A PLASTIC STATE IN GENERAL
    • B29C—SHAPING OR JOINING OF PLASTICS; SHAPING OF MATERIAL IN A PLASTIC STATE, NOT OTHERWISE PROVIDED FOR; AFTER-TREATMENT OF THE SHAPED PRODUCTS, e.g. REPAIRING
    • B29C66/00—General aspects of processes or apparatus for joining preformed parts
    • B29C66/80—General aspects of machine operations or constructions and parts thereof
    • B—PERFORMING OPERATIONS; TRANSPORTING
    • B29—WORKING OF PLASTICS; WORKING OF SUBSTANCES IN A PLASTIC STATE IN GENERAL
    • B29C—SHAPING OR JOINING OF PLASTICS; SHAPING OF MATERIAL IN A PLASTIC STATE, NOT OTHERWISE PROVIDED FOR; AFTER-TREATMENT OF THE SHAPED PRODUCTS, e.g. REPAIRING
    • B29C66/00—General aspects of processes or apparatus for joining preformed parts
    • B29C66/80—General aspects of machine operations or constructions and parts thereof
    • B29C66/81—General 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
    • B29C66/814—General 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
    • B29C66/8141—General 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
    • B29C66/81427—General 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
    • B—PERFORMING OPERATIONS; TRANSPORTING
    • B29—WORKING OF PLASTICS; WORKING OF SUBSTANCES IN A PLASTIC STATE IN GENERAL
    • B29C—SHAPING OR JOINING OF PLASTICS; SHAPING OF MATERIAL IN A PLASTIC STATE, NOT OTHERWISE PROVIDED FOR; AFTER-TREATMENT OF THE SHAPED PRODUCTS, e.g. REPAIRING
    • B29C66/00—General aspects of processes or apparatus for joining preformed parts
    • B29C66/80—General aspects of machine operations or constructions and parts thereof
    • B29C66/81—General 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
    • B29C66/814—General 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
    • B29C66/8141—General 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
    • B29C66/81431—General 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
    • B—PERFORMING OPERATIONS; TRANSPORTING
    • B29—WORKING OF PLASTICS; WORKING OF SUBSTANCES IN A PLASTIC STATE IN GENERAL
    • B29C—SHAPING OR JOINING OF PLASTICS; SHAPING OF MATERIAL IN A PLASTIC STATE, NOT OTHERWISE PROVIDED FOR; AFTER-TREATMENT OF THE SHAPED PRODUCTS, e.g. REPAIRING
    • B29C66/00—General aspects of processes or apparatus for joining preformed parts
    • B29C66/80—General aspects of machine operations or constructions and parts thereof
    • B29C66/81—General 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
    • B29C66/816—General 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 mounting of the pressing elements, e.g. of the welding jaws or clamps
    • B29C66/8161—General 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 mounting of the pressing elements, e.g. of the welding jaws or clamps said pressing elements being supported or backed-up by springs or by resilient material
    • B—PERFORMING OPERATIONS; TRANSPORTING
    • B29—WORKING OF PLASTICS; WORKING OF SUBSTANCES IN A PLASTIC STATE IN GENERAL
    • B29C—SHAPING OR JOINING OF PLASTICS; SHAPING OF MATERIAL IN A PLASTIC STATE, NOT OTHERWISE PROVIDED FOR; AFTER-TREATMENT OF THE SHAPED PRODUCTS, e.g. REPAIRING
    • B29C66/00—General aspects of processes or apparatus for joining preformed parts
    • B29C66/80—General aspects of machine operations or constructions and parts thereof
    • B29C66/81—General 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
    • B29C66/816—General 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 mounting of the pressing elements, e.g. of the welding jaws or clamps
    • B29C66/8167—Quick change joining tools or surfaces
    • B—PERFORMING OPERATIONS; TRANSPORTING
    • B29—WORKING OF PLASTICS; WORKING OF SUBSTANCES IN A PLASTIC STATE IN GENERAL
    • B29C—SHAPING OR JOINING OF PLASTICS; SHAPING OF MATERIAL IN A PLASTIC STATE, NOT OTHERWISE PROVIDED FOR; AFTER-TREATMENT OF THE SHAPED PRODUCTS, e.g. REPAIRING
    • B29C66/00—General aspects of processes or apparatus for joining preformed parts
    • B29C66/80—General aspects of machine operations or constructions and parts thereof
    • B29C66/82—Pressure application arrangements, e.g. transmission or actuating mechanisms for joining tools or clamps
    • B29C66/822—Transmission mechanisms
    • B29C66/8225—Crank mechanisms
    • B—PERFORMING OPERATIONS; TRANSPORTING
    • B29—WORKING OF PLASTICS; WORKING OF SUBSTANCES IN A PLASTIC STATE IN GENERAL
    • B29C—SHAPING OR JOINING OF PLASTICS; SHAPING OF MATERIAL IN A PLASTIC STATE, NOT OTHERWISE PROVIDED FOR; AFTER-TREATMENT OF THE SHAPED PRODUCTS, e.g. REPAIRING
    • B29C66/00—General aspects of processes or apparatus for joining preformed parts
    • B29C66/80—General aspects of machine operations or constructions and parts thereof
    • B29C66/83—General aspects of machine operations or constructions and parts thereof characterised by the movement of the joining or pressing tools
    • B29C66/834—General aspects of machine operations or constructions and parts thereof characterised by the movement of the joining or pressing tools moving with the parts to be joined
    • B29C66/8351—Jaws mounted on rollers, cylinders, drums, bands, belts or chains; Flying jaws
    • B29C66/83541—Jaws mounted on rollers, cylinders, drums, bands, belts or chains; Flying jaws flying jaws, e.g. jaws mounted on crank mechanisms or following a hand over hand movement
    • B29C66/83543—Jaws mounted on rollers, cylinders, drums, bands, belts or chains; Flying jaws flying jaws, e.g. jaws mounted on crank mechanisms or following a hand over hand movement cooperating flying jaws
    • B—PERFORMING OPERATIONS; TRANSPORTING
    • B29—WORKING OF PLASTICS; WORKING OF SUBSTANCES IN A PLASTIC STATE IN GENERAL
    • B29C—SHAPING OR JOINING OF PLASTICS; SHAPING OF MATERIAL IN A PLASTIC STATE, NOT OTHERWISE PROVIDED FOR; AFTER-TREATMENT OF THE SHAPED PRODUCTS, e.g. REPAIRING
    • B29C66/00—General aspects of processes or apparatus for joining preformed parts
    • B29C66/80—General aspects of machine operations or constructions and parts thereof
    • B29C66/84—Specific machine types or machines suitable for specific applications
    • B29C66/849—Packaging machines
    • B29C66/8491—Packaging machines welding through a filled container, e.g. tube or bag
    • B—PERFORMING OPERATIONS; TRANSPORTING
    • B65—CONVEYING; PACKING; STORING; HANDLING THIN OR FILAMENTARY MATERIAL
    • B65B—MACHINES, APPARATUS OR DEVICES FOR, OR METHODS OF, PACKAGING ARTICLES OR MATERIALS; UNPACKING
    • B65B51/00—Devices for, or methods of, sealing or securing package folds or closures; Devices for gathering or twisting wrappers, or necks of bags
    • B65B51/10—Applying or generating heat or pressure or combinations thereof
    • B65B51/26—Devices specially adapted for producing transverse or longitudinal seams in webs or tubes
    • B65B51/30—Devices, e.g. jaws, for applying pressure and heat, e.g. for subdividing filled tubes
    • B65B51/306—Counter-rotating devices
    • B—PERFORMING OPERATIONS; TRANSPORTING
    • B65—CONVEYING; PACKING; STORING; HANDLING THIN OR FILAMENTARY MATERIAL
    • B65B—MACHINES, APPARATUS OR DEVICES FOR, OR METHODS OF, PACKAGING ARTICLES OR MATERIALS; UNPACKING
    • B65B9/00—Enclosing successive articles, or quantities of material, e.g. liquids or semiliquids, in flat, folded, or tubular webs of flexible sheet material; Subdividing filled flexible tubes to form packages
    • B65B9/10—Enclosing successive articles, or quantities of material, in preformed tubular webs, or in webs formed into tubes around filling nozzles, e.g. extruded tubular webs
    • B65B9/20—Enclosing successive articles, or quantities of material, in preformed tubular webs, or in webs formed into tubes around filling nozzles, e.g. extruded tubular webs the webs being formed into tubes in situ around the filling nozzles
    • B65B9/2014—Tube advancing means
    • B65B9/2021—Tube advancing means combined with longitudinal welding devices
    • B—PERFORMING OPERATIONS; TRANSPORTING
    • B65—CONVEYING; PACKING; STORING; HANDLING THIN OR FILAMENTARY MATERIAL
    • B65B—MACHINES, APPARATUS OR DEVICES FOR, OR METHODS OF, PACKAGING ARTICLES OR MATERIALS; UNPACKING
    • B65B9/00—Enclosing successive articles, or quantities of material, e.g. liquids or semiliquids, in flat, folded, or tubular webs of flexible sheet material; Subdividing filled flexible tubes to form packages
    • B65B9/10—Enclosing successive articles, or quantities of material, in preformed tubular webs, or in webs formed into tubes around filling nozzles, e.g. extruded tubular webs
    • B65B9/20—Enclosing successive articles, or quantities of material, in preformed tubular webs, or in webs formed into tubes around filling nozzles, e.g. extruded tubular webs the webs being formed into tubes in situ around the filling nozzles
    • B65B9/207—Enclosing successive articles, or quantities of material, in preformed tubular webs, or in webs formed into tubes around filling nozzles, e.g. extruded tubular webs the webs being formed into tubes in situ around the filling nozzles the web advancing continuously
    • B—PERFORMING OPERATIONS; TRANSPORTING
    • B29—WORKING OF PLASTICS; WORKING OF SUBSTANCES IN A PLASTIC STATE IN GENERAL
    • B29C—SHAPING OR JOINING OF PLASTICS; SHAPING OF MATERIAL IN A PLASTIC STATE, NOT OTHERWISE PROVIDED FOR; AFTER-TREATMENT OF THE SHAPED PRODUCTS, e.g. REPAIRING
    • B29C53/00—Shaping by bending, folding, twisting, straightening or flattening; Apparatus therefor
    • B29C53/36—Bending and joining, e.g. for making hollow articles
    • B29C53/38—Bending and joining, e.g. for making hollow articles by bending sheets or strips at right angles to the longitudinal axis of the article being formed and joining the edges
    • B29C53/48—Bending and joining, e.g. for making hollow articles by bending sheets or strips at right angles to the longitudinal axis of the article being formed and joining the edges for articles of indefinite length, i.e. bending a strip progressively
    • B29C53/50—Bending and joining, e.g. for making hollow articles by bending sheets or strips at right angles to the longitudinal axis of the article being formed and joining the edges for articles of indefinite length, i.e. bending a strip progressively using internal forming surfaces, e.g. mandrels
    • B—PERFORMING OPERATIONS; TRANSPORTING
    • B29—WORKING OF PLASTICS; WORKING OF SUBSTANCES IN A PLASTIC STATE IN GENERAL
    • B29C—SHAPING OR JOINING OF PLASTICS; SHAPING OF MATERIAL IN A PLASTIC STATE, NOT OTHERWISE PROVIDED FOR; AFTER-TREATMENT OF THE SHAPED PRODUCTS, e.g. REPAIRING
    • B29C65/00—Joining or sealing of preformed parts, e.g. welding of plastics materials; Apparatus therefor
    • B29C65/02—Joining or sealing of preformed parts, e.g. welding of plastics materials; Apparatus therefor by heating, with or without pressure
    • B29C65/18—Joining or sealing of preformed parts, e.g. welding of plastics materials; Apparatus therefor by heating, with or without pressure using heated tools
    • B—PERFORMING OPERATIONS; TRANSPORTING
    • B29—WORKING OF PLASTICS; WORKING OF SUBSTANCES IN A PLASTIC STATE IN GENERAL
    • B29C—SHAPING OR JOINING OF PLASTICS; SHAPING OF MATERIAL IN A PLASTIC STATE, NOT OTHERWISE PROVIDED FOR; AFTER-TREATMENT OF THE SHAPED PRODUCTS, e.g. REPAIRING
    • B29C65/00—Joining or sealing of preformed parts, e.g. welding of plastics materials; Apparatus therefor
    • B29C65/74—Joining 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
    • B29C65/745—Joining 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
    • B29C65/7451—Joining 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
    • B—PERFORMING OPERATIONS; TRANSPORTING
    • B29—WORKING OF PLASTICS; WORKING OF SUBSTANCES IN A PLASTIC STATE IN GENERAL
    • B29C—SHAPING OR JOINING OF PLASTICS; SHAPING OF MATERIAL IN A PLASTIC STATE, NOT OTHERWISE PROVIDED FOR; AFTER-TREATMENT OF THE SHAPED PRODUCTS, e.g. REPAIRING
    • B29C66/00—General aspects of processes or apparatus for joining preformed parts
    • B29C66/80—General aspects of machine operations or constructions and parts thereof
    • B29C66/83—General aspects of machine operations or constructions and parts thereof characterised by the movement of the joining or pressing tools
    • B29C66/834—General aspects of machine operations or constructions and parts thereof characterised by the movement of the joining or pressing tools moving with the parts to be joined
    • B29C66/8341—Roller, cylinder or drum types; Band or belt types; Ball types
    • B29C66/83421—Roller, cylinder or drum types; Band or belt types; Ball types band or belt types
    • B—PERFORMING OPERATIONS; TRANSPORTING
    • B65—CONVEYING; PACKING; STORING; HANDLING THIN OR FILAMENTARY MATERIAL
    • B65B—MACHINES, APPARATUS OR DEVICES FOR, OR METHODS OF, PACKAGING ARTICLES OR MATERIALS; UNPACKING
    • B65B9/00—Enclosing successive articles, or quantities of material, e.g. liquids or semiliquids, in flat, folded, or tubular webs of flexible sheet material; Subdividing filled flexible tubes to form packages
    • B65B9/10—Enclosing successive articles, or quantities of material, in preformed tubular webs, or in webs formed into tubes around filling nozzles, e.g. extruded tubular webs
    • B65B9/20—Enclosing successive articles, or quantities of material, in preformed tubular webs, or in webs formed into tubes around filling nozzles, e.g. extruded tubular webs the webs being formed into tubes in situ around the filling nozzles
    • B65B9/2007—Means for stripping or squeezing filled tubes prior to sealing to remove air or products from sealing area

Abstract

This novel unit welds and separates a lay-flat tube, using moving welding jaws, in which a separating device moves against the jaw. The separator (18) and jaws (15) have an adjuster (20) and mechanism (41) to move them parallel to both the welding surfaces (21) and the tube direction. The separator projects out towards the lay-flat tubing (7) and can be retracted in the opposite direction.

Description

Die Erfindung betrifft eine Vorrichtung zum Verschweißen und Abstreifen eines Folienschlauches, mit gegenläufig bewegbaren Schweißbacken, einer Trennein­ richtung zum Durchtrennen des Folienschlauches, sowie einer Abstreifeinrichtung zum Abstreifen des Folienschlauches in Schlauchrichtung.The invention relates to a device for welding and stripping Foil tube, with oppositely movable welding jaws, a separator direction for cutting the film tube, as well as a Wiping device for wiping the film tube in the tube direction.

Aus der EP-OS 0165 819 ist eine Vorrichtung dieser Art an einer vertikalen Schlauchbeutelmaschine beschrieben. Eine Abstreifeinrichtung ist an jeweils einer Quersiegelbacke dieser Verpackungsmaschine vorgesehen.From EP-OS 0165 819 a device of this type is on a vertical Tubular bag machine described. A scraper is on a cross sealing jaw of this packaging machine.

Die Abstreifeinrichtung dient dem Abstreifen des Folienschlauches in der Weise, daß Produkt im Innern des Folienschlauches durch die Abstreifeinrichtung nach unten bewegt wird, um den Verpackungsprozeß dahingehend zu verbessern, daß eine Produktportion schnell und vollständig in das untere Ende des Folienschlauchs gebracht wird. Die Abstreifbewegung wird dabei derart erreicht, daß die Abstreifeinrichtung eine zwangsgeführte Schwenkbewegung gegenüber den Armeinrichtungen der Schweißbacke ausführt.The stripping device is used for stripping the film tube in the Way that product inside the film tube through the Scraper is moved down to the packaging process to improve that a product portion quickly and completely in the lower end of the film tube is brought. The wiping motion will achieved in such a way that the scraper device a positively guided Swiveling movement in relation to the arm devices of the welding jaw executes.

Die bekannte Vorrichtung hat den Nachteil, daß eine Veränderung des am Folienschlauch verlaufenden Abstreifweges nur mit einem relativ großen Montageaufwand vorgenommen werden kann. Eine derartige Veränderung ist bei einer veränderten Portionsmasse oder bei einem anderen Produkt, welches andere Falleigenschaften oder eine andere Verdichtung aufweist, von Vorteil.The known device has the disadvantage that a change in the Foil tube extending stripping path only with a relatively large Assembly effort can be made. Such a change is with a changed portion mass or with another product which has other falling properties or a different compression, advantageous.

Der Erfindung liegt die Aufgabe zu Grunde, die Vorrichtung derart zu gestalten, daß der Abstreifweg in einfacher Weise veränderbar wird. The object of the invention is to design the device in such a way that that the stripping path can be changed in a simple manner.  

Gelöst ist die Aufgabe gemäß dem kennzeichnenden Teil des Anspruchs 1.The problem is solved according to the characterizing part of claim 1.

Danach sind die Abstreifeinrichtung und die Schweißbacke mittels einer Verstelleinrichtung parallel zu der Schweißfläche und der Schlauchrichtung auf ein die Schweißbacke und die Abstreifeinrichtung tragendes Bewegungselement verstellbar, die Abstreifeinrichtung ragt über die Schweißfläche hinaus in die Richtung zum Folienschlauch hin und ist entgegen diese Richtung rückstellbar.Then the scraper and the welding jaw are by means of a Adjustment device parallel to the welding surface and the hose direction a moving element carrying the welding jaw and the stripping device adjustable, the scraper protrudes beyond the welding surface into the Direction to the film tube and can be reset against this direction.

Die erfindungsgemäße Vorrichtung hat den Vorteil, daß eine relativ komplizierte Schwenkbewegung zwischen der Abstreifeinrichtung und der Schweißbacke vermieden wird. Statt dessen erfolgt eine Relativbewegung der Abstreifeinrichtung mitsamt der Schweißbacke entlang eines geraden Weges auf das Bewegungselement zu bzw. von diesem weg. Eine gerade Wegstrecke ist in einfacher Weise durch die Verschiebung ihres Startpunktes und/oder ihres Zielpunktes veränderbar. Die Verstelleinrichtung kann hierzu modifiziert werden bzw. modifiziert betrieben werden. Das Abstreifen des Folienschlauches geschieht durch die über die Schweißfläche hinausragende Abstreifeinrichtung während eines Verstellvorganges. Danach werden die Schweißflächen der Schweißbacken gegeneinander gepreßt, um die Folienverschweißung vorzunehmen.The device according to the invention has the advantage that it is relatively complicated Swiveling movement between the scraper and the welding jaw is avoided. Instead, there is a relative movement of the Scraper along with the welding jaw along a straight path towards or away from the movement element. A straight line is in a simple way by moving your starting point and / or your Target point changeable. The adjustment device can be modified for this operated or modified. The stripping of the film tube happens through the scraper protruding beyond the welding surface during an adjustment process. Then the welding surfaces of the Welding jaws pressed against each other to seal the foil to make.

Weitere vorteilhafte Ausgestaltungen der erfindungsgemäßen Vorrichtung sind in den Ansprüchen 2 bis 16 beschrieben.Further advantageous configurations of the device according to the invention are described in claims 2 to 16.

Sind die Schweißbacken und die Abstreifeinrichtung über eine Verbindung direkt mit dem Bewegungselement verbunden (Anspruch 2), so bestimmt in einfacher Weise die Auslenkung der Verbindung den Abstreifweg. Der Start- bzw. der Zielpunkt werden durch die Abmessung der Verbindung begrenzt. Are the welding jaws and the scraper device connected directly connected to the moving element (claim 2), as determined in simple way the deflection of the connection the stripping path. The start or the destination point are limited by the dimension of the connection.  

Die Schweißbacke und die Abstreifeinrichtung sind unabhängig vom Auslenkungszustand der Verbindung stabilisiert und leicht ortsveränderbar, wenn analog Anspruch 3 die Verbindung aus mindestens zwei parallel zueinander angeordneten Stiften besteht, die parallel zueinander angeordnet sind, und die an einem Ende die Schweißbacke und die Abstreifeinrichtung tragen, und deren entgegengesetztes Ende in jeweils einer Aussparung des Bewegungselementes verschiebbar angeordnet ist.The welding jaw and the stripping device are independent of Deflection state of the connection stabilized and easy to move, if analogous to claim 3, the connection of at least two in parallel pins arranged to each other, which are arranged parallel to each other and the welding jaw and the scraper at one end wear, and the opposite end of each in a recess of the Movement element is slidably arranged.

Die Stifte verhindern ein Verdrehen der Schweißbacke und der Abstreifeinrichtung bezüglich des Bewegungselementes. Die Aussparungen dienen als Gleitlager für die Stifte.The pins prevent the welding jaw from rotating Scraper device with respect to the moving element. The cutouts serve as plain bearings for the pins.

Sowohl die Art und Weise der Verbindung der Schweißbacke und der Abstreifeinrichtung mit dem Bewegungselement als auch der Erzeugung der Relativbewegung zwischen diesen Bauteilen können unterschiedlich sein.Both the way of connecting the welding jaw and the Scraper with the moving element and the generation of Relative movement between these components can be different.

So kann z. B. die Verstelleinrichtung einen Motor aufweisen, der starr mit dem Bewegungselement verbunden ist, und der die Verbindung verstellt (Anspruch 4). Bei dieser Ausgestaltung kann der Motor abhängig vom augenblicklichen Zustand der Vorrichtung bzw. des Bewegungselementes betrieben werden, wobei auch ungleichförmige Abstreifbewegungen ausgeführt werden können. Eine Veränderung des Abstreifweges kann allein durch den Motorbetrieb erreicht werden. Als Alternative zu einem separaten Motor eignet sich als Verstelleinrichtung eine Zwangsführung für die Abstreifeinrichtung (Anspruch 5). Die Zwangsführung kann z. B. aus einer entlang einer Bahn abrollenden Rolle oder durch eine verbindende Mechanik realisiert werden.So z. B. the adjusting device have a motor that is rigid with the Movement element is connected, and which adjusts the connection (claim 4). With this configuration, the motor can be dependent on the current one State of the device or of the movement element are operated, non-uniform stripping movements can also be carried out. A change in the wiping distance can only be done by engine operation can be achieved. As an alternative to a separate motor is suitable as Adjustment device a positive guide for the stripping device (claim 5). The forced operation can, for. B. from a roll rolling along a path or be realized by a connecting mechanism.

Eine Bewegung der Schweißbacken kann rotierend und damit unter Aufbringung relativ geringer Kräfte und relativ schnell erfolgen, wenn gemäß Anspruch 6 um Achsen gegenläufig rotierende Schweißbacken vorgesehen sind. A movement of the welding jaws can rotate and therefore with application relatively low forces and take place relatively quickly when according to claim 6 Axes rotating in opposite directions are provided.  

Ist für die Schweißbacken eines Backenstocks eine Zwangsführung in Form einer D-Kurve vorgesehen (Anspruch 7), so kann eine für einen Schweißvorgang günstige Backenbewegung realisiert werden. Die Verschweißung erfolgt hierbei während einer geradelinigen Bewegung der Schweißbacken. Eine kostengünstige Alternative hierzu ist gemäß Anspruch 8, daß jede Schweißbacke über eine Teleskopverbindung mit einer Achse verbunden ist. Die Teleskopverbindung ermöglicht eine D-förmige Backenbewegung allein dadurch, daß bei Backenkontakt die Verbindung gestaucht und dadurch die Backbahn gerade wird.Is a positive guide for the welding jaws of a cheek block a D curve provided (claim 7), one for one Welding process favorable jaw movement can be realized. The Welding takes place during a straight movement of the Welding jaws. A cost-effective alternative to this is according to claim 8, that each welding jaw has a telescopic connection with an axis connected is. The telescopic connection enables a D-shaped Jaw movement only because the connection is in contact with the jaw compressed and thereby the baking path is straight.

Ein um zwei Rollen umlaufendes Heißsiegelband als Längsschweißeinrichtung (Anspruch 9) hat den Vorteil, daß eine gleichmäßige Längsverschweißung bei einem kontinuierlich weiterbewegten Folienschlauch erreicht ist.A heat sealing tape running around two rolls as a longitudinal welding device (Claim 9) has the advantage that a uniform longitudinal welding a continuously moving film tube is reached.

Die Bewegung der Abstreifeinrichtung relativ zur Schweißbacke wird gedämpft, wenn analog Anspruch 10 die Verbindung gegenüber der Schweißbacke oder der Verstelleinrichtung mittels einer Feder vorgespannt ist.The movement of the stripping device relative to the welding jaw is damped, if analogous to claim 10, the connection to the welding jaw or the adjusting device is biased by a spring.

Weist die Verbindung einen oberen Anschlag und einen unteren Anschlag für die Auslenkung der Schweißbacke und der Abstreifeinrichtung auf (Anspruch 11), so ist ein Widerstand für die Begrenzung der Auslenkung gegeben.The connection has an upper stop and a lower stop for the deflection of the welding jaw and the stripping device on (claim 11), there is resistance for limiting the deflection.

Ein Abstreifen wird weiter verbessert, wenn die Abstreifeinrichtung eine Stange (12) oder ein Abstreifblech (Anspruch 13) ist, und wenn an jeder Schweißbacke eine Abstreifeinrichtung vorgesehen ist (Anspruch 14). Stripping is further improved if the stripping device is a rod ( 12 ) or a stripping plate (claim 13), and if a stripping device is provided on each welding jaw (claim 14).

Sind die Schweißbacken Quersiegelbacken einer vertikalen Schlauchbeutelmaschine (Anspruch 15), so ist die Vorrichtung an einer Verpackungsmaschine realisiert, an der infolge des Falls des zu verpackenden Produkts der Einsatz einer Abstreifeinrichtung zur Fallunterstützung und zur Produktstauchung besonders geeignet ist.Are the sealing jaws cross sealing jaws of a vertical Tubular bag machine (claim 15), the device is at one Packaging machine realized on the due to the fall of the to be packaged Product the use of a stripping device for case support and Product compression is particularly suitable.

Mittels eines Viergelenkmechanismusses analog Anspruch 16 wird erreicht, daß die Schweißbacke und die Abstreifeinrichtung unabhängig vom momentanen Drehwinkel einer rotierenden Schweißbacke senkrecht auf die Oberfläche des Folienschlauches ausgerichtet sind.By means of a four-bar mechanism analogous to claim 16, it is achieved that the welding jaw and the scraper device regardless of the current one Angle of rotation of a rotating welding jaw perpendicular to the surface of the Foil tube are aligned.

Um folgenden wird die erfindungsgemäße Vorrichtung anhand von Figuren, die zwei Ausführungsbeispiele darstellen, näher beschrieben. Es zeigt:To the following, the device according to the invention is based on figures that represent two embodiments, described in more detail. It shows:

Fig. 1 in einer Seitenansicht schematisch eine Schlauchbeutelmaschine mit einer Vorrichtung zum Verschweißen und Abstreifen eines Folienschlauches, wobei die Vorrichtung gegenläufig um Achsen bewegte Bewegungseinrichtungen mit einer Quersiegelbacke aufweist, wobei an jeder Quersiegelbacke eine Abstreifeinrichtung vorhanden ist, und wobei die Quersiegelbacke mitsamt der Abstreifeinrichtung mittels einer Verstelleinrichtung parallel zu der Schweißfläche und der Schlauchrichtung auf die Bewegungseinrichtung zu verstellbar ist; Fig. 1 in a side view schematically a tubular bag machine with a device for welding and stripping a film tube, the device having movement devices moving in opposite directions about axes with a cross sealing jaw, with a stripping device being present on each cross sealing jaw, and wherein the cross sealing jaw together with the stripping device by means of a Adjusting device is adjustable parallel to the welding surface and the hose direction on the movement device;

Fig. 2 in einer Seitenansicht einen Teil des Gegenstandes der Fig. 1, jedoch in vergrößerter Darstellung, wobei die Stangen der Verstelleinrichtung in einer oberen Position einen Abstreifkontakt mit dem Folienschlauch haben; FIG. 2 shows a side view of part of the object of FIG. 1, but in an enlarged view, the rods of the adjusting device having a wiping contact with the film tube in an upper position;

Fig. 3 in einer Seitenansicht den Gegenstand der Fig. 2, jedoch kurze Zeit später in einer Position, bei der der Abstreifvorgang beendet ist, ein erzeugter Schlauchbeutel verschweißt und vom Folienschlauch abgetrennt wird; Fig. 3 is a side view of the object of FIG 2, but a short time later at a position at which the stripping operation is completed, a generated welded tubular bags, and is separated from the film tube.

Fig. 4 in einer Seitenansicht ein weiteres Beispiel einer erfindungsgemäßen Vorrichtung mit zwei gegenläufig um jeweils einen vier Gelenke aufweisenden Gelenkmechanismus bewegbaren Bewegungselementen, mit denen über jeweils eine Verstelleinrichtung eine Schweißbacke und ein Abstreifblech verbunden sind; Fig. 4 is a side view of another example of a device according to the invention with two counter movable in each case a four-joints link mechanism having moving elements, which via an adjusting a welding jaw and a stripper plate are connected;

Fig. 5 in einer Seitenansicht den Gegenstand der Fig. 4, jedoch in einer anschließenden Drehposition des Gelenkmechanismusses und mit ausgefahrener Verstelleinrichtung; Fig. 5 is a side view of the subject matter of Figure 4, but in a subsequent rotational position of the wrist mechanism and with extended adjustment.

Fig. 6 in einer Seitenansicht den Gegenstand der Fig. 5, jedoch in einer anschließenden Drehposition, mit einem Abstreifkontakt zwischen dem Folienschlauch und dem Abstreifblech bei Beginn eines Abstreifvorganges, sowie Fig. 6 is a side view of the subject of Fig. 5, but in a subsequent rotational position, with a stripping contact between the film tube and the stripping plate at the start of a stripping process, and

Fig. 7 in einer Seitenansicht den Gegenstand der Fig. 6, jedoch in einer anschließenden Drehposition, nach Beendigung des Abstreif- und des Verschweißvorganges, und während einer Durchtrennung des Folienschlauches. Fig. 7 is a side view of the subject of Fig. 6, but in a subsequent rotational position, after the stripping and welding process, and during a severing of the film tube.

Bei einer vertikalen Schlauchbeutelmaschine 1 wird mittels eines Folienabzuges 2 eine ebene Folienbahn 3 von einer Vorratsrolle 4 abgezogen (Fig. 1). Die Folienbahn 3 wird an einer Umlenkrolle 5 umgelenkt und mittels einer Formschulter 6 zu einem Folienschlauch 7 umgeformt. Der Folienschlauch 7 umgibt ein Füllrohr 8. In a vertical tubular bag machine 1 , a flat film web 3 is pulled off a supply roll 4 by means of a film take-off 2 ( FIG. 1). The film web 3 is deflected on a deflecting roller 5 and shaped into a film tube 7 by means of a shaped shoulder 6 . The film tube 7 surrounds a filling tube 8 .

Der Folienabzug 2 wirkt gegen den Folienschlauch 7 und gegen das Füllrohr 8. Eine Längsschweißeinrichtung 9 dient der Längsverschweißung des Folienschlauches 7. Die Längsschweißeinrichtung 9 ist ein um zwei Rollen 10, 11 umlaufendes Heißsiegelband 12.The film take-off 2 acts against the film tube 7 and against the filling pipe 8 . A longitudinal welding device 9 is used for longitudinal welding of the film tube 7 . The longitudinal welding device 9 is a heat sealing tape 12 which runs around two rollers 10 , 11 .

Auf gegenüberliegenden Seiten des Folienschlauches 7 ist jeweils ein Backenstock 13 mit jeweils zwei um eine Achse 14 umlaufenden Schweißbacken 15 vorgesehen. Die beiden Achsen 14 sind senkrecht zur Schlauchrichtung 16 ausgerichtet.On each side of the film tube 7 there is a baking stick 13 with two welding jaws 15 rotating around an axis 14 . The two axes 14 are aligned perpendicular to the hose direction 16 .

An zwei Schweißbacken 15 ist jeweils eine Trenneinrichtung 17 zum Durchtrennen des Folienschlauches 7 vorgesehen. An jeder Schweißbacke 15 ist zudem eine Abstreifeinrichtung 18 zum Abstreifen des Folienschlauches 7 vorgesehen. An jeder Schweißbacke 15 ist zudem eine Abstreifeinrichtung 18 zum Abstreifen des Folienschlauches 7 in Schlauchrichtung 16 angebracht.A separating device 17 is provided on each of two welding jaws 15 for severing the film tube 7 . A stripping device 18 for stripping the film tube 7 is also provided on each welding jaw 15 . A stripping device 18 for stripping the film tube 7 in the tube direction 16 is also attached to each welding jaw 15 .

Die Abstreifeinrichtung 18 ist mitsamt der Schweißbacke 15 mittels einer Verstelleinrichtung 20 parallel zu den Schweißflächen 21 der Schweißbacken 15 und der Schlauchrichtung 16 auf ein umlaufendes Bewegungselement 41 zu und von dem Bewegungselement 41 weg verstellbar (Fig. 2). Die Schweißbacken 15 sind Quersiegelbacken 22.The stripping device 18 , together with the welding jaw 15, can be adjusted by means of an adjusting device 20 parallel to the welding surfaces 21 of the welding jaws 15 and the hose direction 16 to a rotating movement element 41 to and from the movement element 41 ( FIG. 2). The welding jaws 15 are transverse sealing jaws 22 .

Die Abstreifeinrichtung 18 ist eine Stange 23, die direkt mit der Schweißbacke 15 verbunden und von einer Feder 42 in einer schlauchnahen Position gehalten ist. Die Verbindung 24 besteht aus zwei parallel zueinander angeordneten Stiften 25, die an einem Ende 26 die Abstreifeinrichtung 18 und die Schweißbacke 25 tragen, und deren entgegengesetztes Ende 27 in jeweils einer Aussparung 28 der Schweißbacke 15 verschiebbar angeordnet ist. Jede Aussparung 28 dient dabei als Gleitlager 29. The stripping device 18 is a rod 23 which is connected directly to the welding jaw 15 and is held in a position close to the hose by a spring 42 . The connection 24 consists of two pins 25 arranged parallel to one another, which carry the stripping device 18 and the welding jaw 25 at one end 26 , and the opposite end 27 of which is slidably arranged in a recess 28 of the welding jaw 15 . Each recess 28 serves as a slide bearing 29 .

Die Verstelleinrichtung 20 weist einen Motor 30 auf, welcher starr mit dem Bewegungselement 41 verbunden ist. Der Motor 30 verstellt die Verbindung 24. (Einzelheiten wie Getriebe und Eingriff des Getriebes in die Verbindung, sowie eine genaue Ausgestaltung der Verbindung, z. B. als Zahnstange, wurden der besseren Veranschaulichung wegen nicht dargestellt.)
Die Abstreifeinrichtung 18 ist senkrecht zur Schlauchrichtung 16 verschiebbar mit einem Ende 26 der Verbindung 24 verbunden. Die Abstreifeinrichtung 18 ist mittels einer Feder 31 gegen die Verbindung 24 vorgespannt. Die Verbindung 24 weist einen oberen Anschlag 34 und einen unteren Anschlag 35 für die Auslenkung der Verstelleinrichtung 20 auf. Die Verbindung 24 ist gegenüber der Schweißbacke 15 und der Abstreifeinrichtung 18 mittels einer Feder 36 vorgespannt.The adjusting device 20 has a motor 30 which is rigidly connected to the movement element 41 . The motor 30 adjusts the connection 24 . (Details such as gear and engagement of the gear in the connection, as well as a precise design of the connection, for example as a rack, have not been shown for the sake of better illustration.)
The stripping device 18 is connected to one end 26 of the connection 24 so as to be displaceable perpendicular to the hose direction 16 . The stripping device 18 is biased against the connection 24 by means of a spring 31 . The connection 24 has an upper stop 34 and a lower stop 35 for the deflection of the adjusting device 20 . The connection 24 is biased relative to the welding jaw 15 and the stripping device 18 by means of a spring 36 .

Jedes Bewegungselement 41 ist über eine Teleskopverbindung 37 mit einer Achse 14 verbunden.Each movement element 41 is connected to an axis 14 via a telescopic connection 37 .

Zwei Schweißbacken 15 gelangen durch Rotation um ihre Achse 14 in Druckkontakt miteinander und verschweißen dabei (Fig. 2) und entlang ihres weiteren Wegs nach unten (Fig. 3) eine Kopfnaht 38 eines Schlauchbeutels 39 und eine Bodennaht 40 am Ende des Folienschlauches 7 mit ihren Schweißflächen 21. Während des Wegs nach unten werden die Teleskopverbindungen 37 gestaucht und die Schweißbacken 15 mit den Abstreifeinrichtungen 18 werden mit Hilfe des Motors 30 nach unten bewegt.Two welding jaws 15 come into pressure contact with one another by rotation about their axis 14 and thereby weld ( FIG. 2) and along their further path downward ( FIG. 3) a top seam 38 of a tubular bag 39 and a bottom seam 40 at the end of the tubular film 7 with them Welding surfaces 21 . During the downward movement, the telescopic connections 37 are compressed and the welding jaws 15 with the stripping devices 18 are moved downwards by means of the motor 30 .

Die Abstreifeinrichtungen 18 streifen dabei zunächst den Folienschlauch 7 derart, daß ein durch das Füllrohr 8 in das untere Ende des verschweißten Folienschlauch 7 gefallenes Produkt dort komprimiert wird. Durch diese Komprimierung ist einerseits der zu erzeugende Schlauchbeutel 39 kompakter, und andererseits ist der von den nachfolgenden Schweißbacken 15 zu verschweißende Bereich des Folienschlauches 7 frei von Produkt. The stripping devices 18 initially strip the film tube 7 in such a way that a product which has fallen through the filling tube 8 into the lower end of the welded film tube 7 is compressed there. As a result of this compression, the tubular bag 39 to be produced is on the one hand more compact, and on the other hand the area of the film tube 7 to be welded by the subsequent sealing jaws 15 is free of product.

Nach erfolgter Verschweißung wird ein Schlauchbeutel 39 mit der Trenneinrichtung 17 vom Folienschlauch 7 getrennt (Fig. 3).After welding, a tubular bag 39 with the separating device 17 is separated from the tubular film 7 ( FIG. 3).

Wegen der Vorspannung der Abstreifeinrichtung 18 durch die Feder 31 erreicht die Abstreifeinrichtung 18 den Folienschlauch 7 bereits vor Beginn des Schweißvorganges und streift entsprechend früher den Folienschlauch 7 ab.Because of the pretensioning of the stripping device 18 by the spring 31 , the stripping device 18 reaches the film tube 7 before the welding process begins and accordingly strips the film tube 7 earlier.

Beim Ausführungsbeispiel der Fig. 4 bis 7 weist die Vorrichtung ein an der Schweißbacke 15 gleitbar befestigtes Abstreifblech 42 als Abstreifeinrichtung 18 auf. Das Abstreifblech 42 ist gegenüber der Verstelleinrichtung 20 mittels einer Feder 43 vorgespannt (Fig. 4).In the exemplary embodiment in FIGS . 4 to 7, the device has a scraper plate 42 slidably attached to the welding jaw 15 as the scraper device 18 . The wiper plate 42 is biased relative to the adjusting device 20 by means of a spring 43 ( FIG. 4).

Jeweils ein Bewegungselement 41 wird mittels eines um vier Gelenke 44, 45, 46, 47 beweglichen Gelenkmechanismus 48 mit zwei Kurbeln 49, 50 rotierbar angetrieben. Jeweils ein Gelenk 45, 47 des Gelenkmechanismus 48 verbindet eine Kurbel 49, 50 mit einem ortsfesten, zeichnerisch nicht dargestellten Bauteil, z. B. dem Maschinenrahmen, und ein weiteres Gelenk 44, 46 verbindet eine Kurbel 49, 50 mit einem Bewegungselement 41.In each case one movement element 41 is rotatably driven by means of a joint mechanism 48 which is movable about four joints 44 , 45 , 46 , 47 and has two cranks 49 , 50 . In each case a joint 45 , 47 of the joint mechanism 48 connects a crank 49 , 50 to a stationary component, not shown in the drawing, for. B. the machine frame, and another joint 44 , 46 connects a crank 49 , 50 with a moving element 41st

Durch Drehung der Kurbeln 49, 50 um 90° (Fig. 5) werden die Bewegungselemente 41 höher und näher an den Folienschlauch 7 gestellt. Durch Herausfahren der Verbindung 24 gelangen die Schweißbacken 15 in eine weiter erhöhte Position. Während der kontinuierlichen Drehbewegung um die Gelenke 45, 47 wird der Folienschlauch 7 kontinuierlich nach unten bewegt.By rotating the cranks 49 , 50 by 90 ° ( FIG. 5), the movement elements 41 are set higher and closer to the film tube 7 . By moving the connection 24 out , the welding jaws 15 reach a further elevated position. During the continuous rotary movement about the joints 45 , 47 , the film tube 7 is continuously moved downwards.

Bei einer zeitlich sich anschließenden Drehposition der Vorrichtung (Fig. 6) sind die Abstreifbleche 42 in einer Position, in der sie gerade den Folienschlauch 7 berühren. Die Schweißflächen 21 haben aber keinen Berührungskontakt mit dem Folienschlauch 7. When the device rotates at a later time ( FIG. 6), the stripping plates 42 are in a position in which they are just touching the film tube 7 . However, the welding surfaces 21 have no contact with the film tube 7 .

Als nächstes wird die Verstelleinrichtung 20 nach unten verstellt. Durch diese Verstellung werden die Abstreifbleche 42 deutlich schneller als der Folienschlauch 7 nach unten bewegt und streifen, unterstützt durch die kontinuierliche Drehbewegung und ihrer gegenseitigen Annäherung, den Folienschlauch 7 und damit das im Folienschlauch 7 enthaltene Produkt nach unten ab. Die Abstreifbleche 42 werden während des Abstreifvorganges gegen die Feder 43 zurückgestellt. Am Ende des Abstreifvorganges (Fig. 7) sind die Schweißflächen 21 der Schweißbacken 15 in Druckkontakt zueinander und verschweißen den erzeugten befüllten Schlauchbeutel 39 mit einer Kopfnaht 38 und das Schlauchende 51 mit einer Bodennaht 40. Der Schlauchbeutel 39 wird sodann mittels der Trenneinrichtung 17 vom Folienschlauch 7 getrennt. Die Vorrichtung wird dann kontinuierlich weiterbewegt, so daß wieder die in Fig. 4 dargestellte Position erreicht wird, und ein neuer Befüllvorgang zur Füllung des Folienschlauches 7 mit Produkt und der nächste Abstreif- und Verschweißvorgang folgen.Next, the adjustment device 20 is adjusted downwards. Through this adjustment, the stripping plates 42 are moved down and rub down significantly faster than the film tube 7 , supported by the continuous rotary movement and their mutual approach, the film tube 7 and thus the product contained in the film tube 7 downwards. The stripping plates 42 are reset against the spring 43 during the stripping process. At the end of the stripping process ( FIG. 7), the welding surfaces 21 of the welding jaws 15 are in pressure contact with one another and weld the filled tubular bag 39 produced with a head seam 38 and the hose end 51 with a bottom seam 40 . The tubular bag 39 is then separated from the film tube 7 by means of the separating device 17 . The device is then continuously moved so that the position shown in FIG. 4 is reached again, and a new filling process for filling the film tube 7 with product and the next stripping and welding process follow.

BezugszeichenlisteReference list

1 Schlauchbeutelmaschine
2 Folienabzug
3 Folienbahn
4 Vorratsrolle
5 Umlenkrolle
6 Formschulter
7 Folienschlauch
8 Füllrohr
9 Längsschweißeinrichtung
10, 11 Rolle
12 Heißsiegelband
13 Backenstock
14 Achse
15 Schweißbacke
16 Schlauchrichtung
17 Trenneinrichtung
18 Abstreifeinrichtung
20 Verstelleinrichtung
21 Schweißfläche
22 Quersiegelbacke
23 Stange
24 Verbindung
25 Stift
26, 27 Ende
28 Aussparung
29 Gleitlager
30 Motor
31 Feder
34, 35 Anschlag
36 Feder
37 Teleskopverbindung
38 Kopfnaht
39 Schlauchbeutel
40 Bodennaht
41 Bewegungselement
42 Abstreifblech
43 Feder
44, 45, 46, 47 Gelenk
48 Gelenkmechanismus
49, 50 Kurbel
51 Schlauchende 1 tubular bag machine
2 film deduction
3 foil web
4 supply roll
5 pulley
6 shape shoulder
7 film tube
8 filling tube
9 longitudinal welding device
10 , 11 roll
12 heat seal tape
13 baking stick
14 axis
15 welding jaw
16 hose direction
17 separating device
18 scraper
20 adjustment device
21 welding surface
22 cross sealing jaw
23 rod
24 connection
25 pen
26 , 27 end
28 recess
29 plain bearings
30 engine
31 spring
34 , 35 stop
36 spring
37 Telescopic connection
38 top seam
39 tubular bags
40 bottom seam
41 movement element
42 scraper plate
43 spring
44 , 45 , 46 , 47 joint
48 hinge mechanism
49 , 50 crank
51 hose end

Claims (16)

1. Vorrichtung zum Verschweißen und Abstreifen eines Folienschlauches, mit mittels Bewegungselementen gegeneinander bewegbaren Schweißbacken einer Trenneinrichtung zum Durchtrennen des Folienschlauches in Schlauchrichtung sowie einer gegenüber der Schweißbacke beweglichen Abstreifeinrichtung zum Abstreifen des Folienschlauches in Schlauchrichtung, dadurch gekennzeichnet, daß die Abstreifeinrichtung (18) und die Schweißbacke (15) mittels einer Verstelleinrichtung (20) parallel zu der Schweißfläche (21) und der Schlauchrichtung (16) auf ein die Schweißbacke (15) und die Abstreifeinrichtung (18) tragendes Bewegungselement (41) verstellbar sind, und daß die Abstreifeinrichtung (18) über die Schweißfläche (21) in die Richtung zum Folienschlauch (7) hin hinausragt und entgegen diese Richtung rückstellbar ist.1.Device for welding and stripping a film tube, with welding jaws which can be moved relative to one another by means of movement elements, a separating device for severing the film tube in the hose direction and a stripping device which can be moved relative to the welding jaw for stripping the film tube in the tube direction, characterized in that the stripping device ( 18 ) and the welding jaw ( 15 ) can be adjusted by means of an adjusting device ( 20 ) parallel to the welding surface ( 21 ) and the hose direction ( 16 ) on a movement element ( 41 ) carrying the welding jaw ( 15 ) and the stripping device ( 18 ), and that the stripping device ( 18 ) extends beyond the welding surface ( 21 ) in the direction of the film tube ( 7 ) and can be reset in the opposite direction. 2. Vorrichtung nach Anspruch 1, dadurch gekennzeichnet, daß die Schweiß­ backe (15) und die Abstreifeinrichtung (18) über eine Verbindung (24) direkt mit dem Bewegungselement (41) verbunden ist.2. Device according to claim 1, characterized in that the welding jaw ( 15 ) and the stripping device ( 18 ) via a connection ( 24 ) is connected directly to the movement element ( 41 ). 3. Vorrichtung nach Anspruch 2, dadurch gekennzeichnet, daß die Verbindung (24) aus mindestens zwei parallel zueinander angeordneten Stiften (25) besteht, die an einem Ende (26) die Schweißbacke (15) und die Abstreifeinrichtung (18) tragen und deren entgegengesetztes Ende (27) in jeweils einer Aussparung (28) des Bewegungselementes (41) verschiebbar angeordnet ist.3. Apparatus according to claim 2, characterized in that the connection ( 24 ) consists of at least two parallel pins ( 25 ) which carry the welding jaw ( 15 ) and the stripping device ( 18 ) at one end ( 26 ) and their opposite End ( 27 ) in each case in a recess ( 28 ) of the movement element ( 41 ) is slidably arranged. 4. Vorrichtung nach Anspruch 2 oder Anspruch 3, dadurch gekennzeichnet, daß die Verstelleinrichtung (20) einen Motor (30) aufweist, daß der Motor (30) starr mit dem Bewegungselement (41) verbunden ist, und daß der Motor (30) die Verbindung (24) verstellt.4. Apparatus according to claim 2 or claim 3, characterized in that the adjusting device ( 20 ) has a motor ( 30 ), that the motor ( 30 ) is rigidly connected to the moving element ( 41 ), and that the motor ( 30 ) Connection ( 24 ) adjusted. 5. Vorrichtung nach Anspruch 1, dadurch gekennzeichnet, daß eine Zwangs­ führung für die Abstreifeinrichtung als Verstelleinrichtung vorgesehen ist.5. The device according to claim 1, characterized in that a constraint guide for the stripping device is provided as an adjusting device. 6. Vorrichtung nach Anspruch 1, Anspruch 4 oder Anspruch 5, dadurch gekenn­ zeichnet, daß auf gegenüberliegenden Seiten des Folienschlauches (7) jeweils ein Backenstock (13) mit um eine Achse (14) umlaufenden Schweißbacken (15) vorgesehen ist, und daß die beiden Achsen (14) senkrecht zur Schlauchrichtung (16) ausgerichtet sind.6. The device according to claim 1, claim 4 or claim 5, characterized in that on opposite sides of the film tube ( 7 ) each have a baking stick ( 13 ) with an axis ( 14 ) rotating welding jaws ( 15 ) is provided, and that both axes ( 14 ) are aligned perpendicular to the hose direction ( 16 ). 7. Vorrichtung nach Anspruch 6, dadurch gekennzeichnet, daß jede Schweiß­ backe (15) über eine Teleskopverbindung (37) mit einer Achse (14) verbunden ist. 7. The device according to claim 6, characterized in that each welding jaw ( 15 ) via a telescopic connection ( 37 ) with an axis ( 14 ) is connected. 8. Vorrichtung nach Anspruch 6 oder Anspruch 7, dadurch gekennzeichnet, daß jede Schweißbacke (15) über eine Teleskopverbindung (37) mit einer Achse (14) verbunden ist.8. The device according to claim 6 or claim 7, characterized in that each welding jaw ( 15 ) via a telescopic connection ( 37 ) is connected to an axis ( 14 ). 9. Vorrichtung nach Anspruch 1, dadurch gekennzeichnet, daß eine Längs­ schweißeinrichtung (9) zur Längsverschweißung des Folienschlauches (7) am Folienschlauch (7) vorgesehen ist, und daß die Längsschweißeinrichtung (9) ein um zwei Rollen (10, 11) umlaufendes Heißsiegelband (12) ist.9. The device according to claim 1, characterized in that a longitudinal welding device ( 9 ) for longitudinal welding of the film tube ( 7 ) on the film tube ( 7 ) is provided, and that the longitudinal welding device ( 9 ) around two rollers ( 10 , 11 ) rotating heat seal tape ( 12 ) is. 10. Vorrichtung nach Anspruch 1, dadurch gekennzeichnet, daß die Abstreif­ einrichtung (18) gegenüber der Schweißbacke (15) oder der Verstelleinrichtung (20) mittels einer Feder (31) vorgespannt ist.10. The device according to claim 1, characterized in that the stripping device ( 18 ) against the welding jaw ( 15 ) or the adjusting device ( 20 ) by means of a spring ( 31 ) is biased. 11. Vorrichtung nach Anspruch 10, dadurch gekennzeichnet, daß die Verbin­ dung (24) einen oberen Anschlag (34) und einen unteren Anschlag (25) für die Auslenkung der Schweißbacke (15) und der Abstreifeinrichtung (18) aufweist.11. The device according to claim 10, characterized in that the connec tion ( 24 ) has an upper stop ( 34 ) and a lower stop ( 25 ) for the deflection of the welding jaw ( 15 ) and the stripping device ( 18 ). 12. Vorrichtung nach Anspruch 1, dadurch gekennzeichnet, daß die Abstreif­ einrichtung (18) eine Stange (23) ist.12. The apparatus according to claim 1, characterized in that the stripping device ( 18 ) is a rod ( 23 ). 13. Vorrichtung nach Anspruch 1, dadurch gekennzeichnet, daß die Ab­ streifeinrichtung (18) ein Abstreifblech (42) ist.13. The apparatus according to claim 1, characterized in that the stripping device ( 18 ) is a scraper plate ( 42 ). 14. Vorrichtung nach Anspruch 1, dadurch gekennzeichnet, daß an jeder Schweißbacke (15) der Vorrichtung eine Abstreifeinrichtung (18) vorgesehen ist.14. The apparatus according to claim 1, characterized in that a stripping device ( 18 ) is provided on each welding jaw ( 15 ) of the device. 15. Vorrichtung nach Anspruch 1, dadurch gekennzeichnet, daß die Schweiß­ backen (15) Quersiegelbacken (22) einer vertikalen Schlauchbeutel­ maschine (1) sind.15. The apparatus according to claim 1, characterized in that the welding jaws ( 15 ) cross sealing jaws ( 22 ) of a vertical tubular bag machine ( 1 ). 16. Vorrichtung nach Anspruch 6, dadurch gekennzeichnet, daß das Bewe­ gungselement (41) mittels eines um vier Gelenke (44, 45, 46, 47) beweglichen Gelenkmechanismus (48) mit zwei Kurbeln (49, 50) gedreht wird, wobei jeweils ein Gelenk (45, 47) des Gelenkmechanismus (48) eine Kurbel (49, 50) mit einem ortsfesten Bauteil und ein weiteres Gelenk (44, 46) die Kurbel (49, 50) mit dem Bewegungselement (41) verbindet.16. The apparatus according to claim 6, characterized in that the movement element ( 41 ) by means of a four joints ( 44 , 45 , 46 , 47 ) movable joint mechanism ( 48 ) with two cranks ( 49 , 50 ) is rotated, each one Joint ( 45 , 47 ) of the joint mechanism ( 48 ) connects a crank ( 49 , 50 ) with a stationary component and a further joint ( 44 , 46 ) connects the crank ( 49 , 50 ) to the movement element ( 41 ).
DE19608522A 1996-03-06 1996-03-06 Welding and sealing unit forming e.g. filled pouches from plastic lay-flat tubing Withdrawn DE19608522A1 (en)

Priority Applications (1)

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DE19608522A DE19608522A1 (en) 1996-03-06 1996-03-06 Welding and sealing unit forming e.g. filled pouches from plastic lay-flat tubing

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Application Number Priority Date Filing Date Title
DE19608522A DE19608522A1 (en) 1996-03-06 1996-03-06 Welding and sealing unit forming e.g. filled pouches from plastic lay-flat tubing

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Cited By (2)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
WO2005030588A1 (en) * 2003-09-24 2005-04-07 Manfred Hauers Continuously operating vertical bag forming, filling and sealing machine
WO2016198477A1 (en) * 2015-06-08 2016-12-15 Windmöller & Hölscher Kg Device and method for cooling a blown film

Cited By (4)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
WO2005030588A1 (en) * 2003-09-24 2005-04-07 Manfred Hauers Continuously operating vertical bag forming, filling and sealing machine
US7448188B2 (en) * 2003-09-24 2008-11-11 Manfred Hauers Continuously operating vertical bag forming filling and sealing machine
WO2016198477A1 (en) * 2015-06-08 2016-12-15 Windmöller & Hölscher Kg Device and method for cooling a blown film
US10974434B2 (en) 2015-06-08 2021-04-13 Windmöller & Hölscher Kg Device and method for cooling a blown film

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