WO1992009480A1

WO1992009480A1 - Film-foldback type packaging apparatus for bag making and filling

Info

Publication number: WO1992009480A1
Application number: PCT/JP1991/001652
Authority: WO
Inventors: Kazuhisa Kinsen; Yoshikuni Tobise; Haruki Abe; Toru Bandou
Original assignee: Nippon Carbide Kogyo Kabushiki Kaisha
Priority date: 1990-11-29
Filing date: 1991-11-29
Publication date: 1992-06-11

Abstract

A packaging apparatus (10) in which an article to be packaged (24) is sealed by a double-folded film (16) for packaging. A single layer film (16) is supplied to a film former (20), where the film is double-folded, an article to be packaged (24) is supplied by a knife edge conveyor (26) into the double-folded film through an insert opening, the film is sealed and cut by seal-cut devices (32), the article to be packaged is packaged in the film to thereby be formed into a package (38) which is carried out by an extendable conveyor (40).

Description

Light

TECHNICAL FIELD The present invention relates to a packaging device, and more particularly, to a packaging device that seals and packs an object to be packaged in a folded film. BACKGROUND ART For example, in U.S. Pat. No. 4,219,988, there are described a film supply device for supplying a film, a film former for folding the film in half, and a film for folding in two. Between the conveyor for loading products between

There is disclosed a packaging device including a seal-cutting device for joining and cutting a film, a film transporting device for transporting the film, and an unloading conveyor for unloading the formed package. For example, in the film former disclosed in the above-mentioned U.S. Patent Specification and Japanese Utility Model Publication No. 60-20567, a roll of a folded film obtained by a pre-folding operation. Is used. The two-fold film supplied from the roll is stripped by the film former at the overlapping part, and folded in the opposite direction. In this film former, an insertion opening for inserting a product or the like is formed at a portion where the folding is performed in the reverse direction, so that the product or the like can be easily inserted. However, when the two-fold film used in this film former is wound into a roll, the overlapped portion is closely attached due to the film load and winding tension, forming a roll. If left for a long time at a high temperature, the inner surface of the double-folded portion will adhere to each other, causing a blocking phenomenon. The problem is that the automatic packaging does not open easily and the automatic packaging does not work smoothly. In order to prevent this blocking phenomenon, it has been proposed to spray fine powder such as starch and talc on the film surface.However, when such fine powder is used, the heat-fusibility of the film is reduced, There are problems such as the subsequent heat fusion processing not being performed properly and the fine powder being packaged together with the article to be packaged.

On the other hand, Japanese Patent Application Laid-Open No. 47-29087 discloses a packaging apparatus provided with a film former using a single-layer film. In this packaging device, a single-layer film is supplied from a roller. First, the film is folded into two by a folding device, and the folded film is further turned upside down by a film former. It is folded in two. For this reason, before the film is supplied to the film former, a two-folding device is required to fold the film into two, which causes a problem that the packaging device becomes complicated, bulky, and large.

In addition, Japanese Utility Model Application Laid-Open No. 57-187 7 229 discloses a film * former that uses a single-layer film and does not require a separate folding unit from the film former. . However, in this film former, a reversing part for reversing from a single-layer film to a two-fold film is present inside the two-fold film, and an entrance opening for introducing a product or the like is not formed. For this reason, it is difficult to insert products and the like.

Further, in a packaging device using a film former that folds a film into two, various devices for exhausting air in the package have been proposed, but there are the following problems to be further solved.

That is, in the packaging device as described above, the method of exhausting the inside of the package is For example, a nozzle method, a chamber method, a deep drawing method, and the like have been proposed.

In the nozzle method, the product is introduced into a bag-like material that has been processed into a bag beforehand, a deaeration nozzle is inserted into the center of the opening of the bag-like material, and the bag-like material is used with the deaeration nozzle

', The air inside is exhausted, the deaeration nozzle is pulled out of the bag, the opening of the bag is welded and sealed. In this nozzle method, it is necessary to process the film into a bag shape in advance, and therefore, there is a problem that the work process is complicated and the packaging cost is increased. Furthermore, since the bag-like material is formed in advance, if the size of the packaged material is different, there is a problem that the packaging and degassing cannot be performed properly. Another problem is that the deaeration nozzle sticks to the bag during deaeration, and the deaeration cannot be performed smoothly.

In the chamber method, a product is placed in a bag, placed in the chamber, the chamber is evacuated, the bag is also evacuated, and the opening of the bag is opened.

15 Sealing method. This method requires the use of a bag-like material formed in advance, and has the same problems as the nozzle method as described above. Further, the chamber method has a problem in that it is necessary to exhaust the inside of a relatively large chamber, and a large-scale exhaust pump is required.

In the deep drawing method, a roll-wound film can be used as it is, but since the deep drawing mold has a fixed shape, it is not possible to degas packages of various shapes. There is a problem that can not be. Furthermore, the use of a deep drawing die causes problems such as an increase in equipment size and investment cost.

On the other hand, the seal and cut device used for the packaging device was folded in two. Seal and cut at the periphery of the film to form a package. This sealing of the film is usually performed by heating the film and heat welding the inner surfaces of the film together.

For example, the seal-cutting device disclosed in Japanese Unexamined Patent Application Publication No. 52-147172 and Japanese Utility Model Application Laid-Open No. 52-98656 discloses a sealer and a sealer pedestal. Wherein the sealer comprises a heating element and a cutting blade. For this reason, the cutting blade of the sealer is heated by the heating element, so that the cutting edge of the cutting blade is liable to be blunted, and furthermore, there is a problem that a cut piece of the film adheres to the cutting edge and deteriorates the cutting edge. .

On the other hand, Japanese Utility Model Publication No. 48-7899 discloses that a sealer and a sealer pedestal are provided, the sealer employs a heating element, and the sealer pedestal is provided with a cutting blade. A device is disclosed. However, in this seal-cutting device, the shape of the cam is so large that the sealer and the sealer pedestal are in contact with and separated from each other, and the seal and the cut are not performed strictly at the same time. There is a problem that a packaging time is lost per machine and a mechanical configuration becomes complicated. Furthermore, when the packaging material is wrinkled, there is a problem that a sufficient sealing pressure cannot be obtained and a hermetic sealing cannot be performed. When performing continuous operation with short tact time, there is a problem in that the heat storage function acts greatly on the elastic body, and a preparation operation of several ten minutes is required to perform stable sealing.

Further, Japanese Utility Model Laid-Open No. 59-7101 discloses an impulse sealer device. In the device disclosed in this publication, the heating element is covered with a Teflon sheet to prevent the film from adhering to the heating element during sealing. However, Teflon sheets are not durable, If the Teflon sheet is used for a long time, a hole will be formed in the Teflon sheet, and the film will adhere to the heating element at the time of sealing, and the heating element must be replaced.

In the packaging apparatus as described above, it is necessary to change the dimensions of the package according to the size of the article to be packaged. As a configuration for changing the dimensions of the package, for example, as disclosed in Japanese Utility Model Publication No. 60-20567, a film former and a carry-in conveyor are installed on a movable base. There has been proposed a configuration in which the package is moved in a direction perpendicular to the direction of movement by operating a handle attached to the base.

However, according to this configuration, the film former and the carry-in conveyor move with respect to the film transfer device and the carry-out conveyor, which causes a problem that the film is wrinkled. If wrinkling occurs, a hermetic seal cannot be obtained and there is a risk that a package with serious defects will be formed. '

Further, in the packaging device as described above, the packaged object is covered with a film, and the film is joined and cut by a seal / cutting device to form a package having predetermined dimensions. The seal-cutting device includes a device for joining and cutting a film in a direction perpendicular to and parallel to a moving direction of the film, for example, a horizontal sealer cutter and a vertical sealer cutter. The horizontal sealer cuts, for example, has a sealer and a sealer pedestal that are in contact with and separated from each other in a plane perpendicular to the moving direction of the film, and when the sealer and the sealer cradle are in contact with each other, the film is moved in the moving direction. Join and cut the film in a vertical direction. The horizontal sealer Katsuyu is equipped with a sealer and a sealer cradle that are in contact with and separated from each other in a plane perpendicular to the direction of film movement. Are arranged, for example, between two conveyors that support an object to be packaged, so that when the sealer and the sealer cradle face each other, the two conveyors are separated from each other.

Such a conveyor apparatus having two conveyors is disclosed, for example, in Japanese Utility Model Laid-Open No. 62-174006. In this conveyor device, one of the conveyors is made to be able to expand and contract, and the space between the two conveyors is opened. At the rear end and the front end of the two conveyors, endless belts are supported by rollers, respectively, and when in close proximity, a recess is formed between the two conveyors according to the radius of the rollers. For this reason, a shock is applied to the package or the article to be packaged when the conveyor is connected. Therefore, in the case of electronic components that are sensitive to impact, the impact at the time of this connection becomes a problem. In particular, when the package is small, the impact at the time of connection is large, and there is a risk that the package may be damaged. In addition, since the generation of static electricity on the endless belt of the conveyor is not considered, there is a problem that the generated static electricity may damage the package.

Disclosure of the invention

According to the present invention, in order to solve the above-described problem,

A feeding device for feeding a single-layer film in a first movement direction;

A first reversing part for reversing one side edge of the single-layer film in a mountain fold with respect to the sealing surface and advancing in a second moving direction;

A second reversing portion for reversing the other side edge of the single-layer film in a mountain fold with respect to the sealing surface;

The other side edge, which has been inverted by the second inverting portion, is further inverted in a mountain fold with respect to the sealing surface, and substantially advances in the second moving direction. And a third reversing part,

The single-layer film is formed into a film folded in half by the center portion of the film by the first inversion portion, the second inversion portion, and the inversion by the third inversion portion,

The first reversing portion and the third reversing portion are separated from each other when viewed in the second movement direction, and substantially V-shaped when viewed in a direction perpendicular to the second movement direction. A film former, wherein an insertion opening for inserting an article between the two-folded film is formed in the film.

Is provided.

This film former uses a single layer of film and does not require the film to be folded in two before feeding into the film former. Further, an insertion opening for inserting an article is formed, so that the article can be easily inserted. The film and the former are preferably formed of a reversal member formed by bending a substantially triangular plate into a U-shape. When this reversing member is used, the film is easily folded in two, and the occurrence of wrinkles is small and the resistance at the time of feeding is small.

Preferably, an object to be packaged is transported by a belt conveyor into a film folded in two by the film former, and sealed and cut by a seal / cutting device. It is carried out by conveyor belt. However, instead of these belt conveyors, other conveying means, for example, a roller conveyor, a robot-type conveying device, or the like can be used.

Further, according to the present invention, in order to solve the above-described problems, A film supply device that supplies film, a film former that forms a folded film, a carry-in conveyor that carries the packaged material between the folded films, and a film that has the package folded in half. A packaging device comprising: a seal / cutting device that forms a package by separating from the other part of the film to form a package; and a film transport device that transports the film.

A vacuum source, a deaeration nozzle, a tube for connecting the vacuum source and the deaeration nozzle, and the deaeration nozzle is folded in two with an inner surface of a folded portion of the folded film. It is characterized by comprising a drive device for moving between an inner position between an object to be packaged between films and an outer position of a folded film. Packaging equipment

Is provided.

The deaeration nozzle preferably has a flattened tip in order to minimize air leakage during extraction after suction. Further, for example, a pressing member made of an elastic material is installed on the sealer and the sealer pedestal of the horizontal sealer and the cutout, and when the air in the film is sucked by the deaeration nozzle, the opening of the film is formed by the crossing member. It is preferable to close the opening to prevent air from entering through the opening.

As a driving device for moving the deaeration nozzle, a driving device of an air type, an electric type, a hydraulic type or the like can be used. Also, the insertion position of the degassing nozzle is preferably close to the inner surface of the folded portion of the two-fold film, and the distance between the tip of the inserted degassing nozzle and the inner surface of the bent portion of the film is preferable. Is within 50 mm, preferably within 1 mm, more preferably within 5 mm. Preferably, the internal pressure in the package to be formed can be adjusted. As the vacuum source, a rotary vacuum pump, a diaphragm vacuum pump, a linear motor vacuum pump, an ejector, a blower, or the like can be used. The ejector is preferable in terms of cost and space saving, and a suction capacity. From the point of view, a vacuum pump is preferable.

It is preferable to arrange a pressure regulator between the deaeration nozzle and the vacuum source. As this pressure regulator, a vacuum regulator (a vacuum pressure reducing valve) and a timer can be used. Further, pressure can be detected and controlled using a Bourdon tube pressure gauge, a diaphragm pressure gauge, an electronic pressure transducer pressure switch, a proximity diaphragm vacuum switch, or the like.

The suction capacity of the vacuum source is 40 to 200 liters Z, preferably 50 to 100 liters Z, more preferably 60 to 80 liters Z, and the suction capacity is too small. If the suction capacity is too high, the film sticks to the suction port of the deaeration nozzle, resulting in poor efficiency. The degassing time is preferably from 1 to 10 seconds', more preferably from 2 to 5 seconds. If the degassing time is short, the film tends to stick to the suction port of the degassing nozzle, and if it is long, the efficiency becomes poor.

Further, according to the present invention, in order to solve the above-mentioned problems, a sealer and a sealer cradle arranged so as to be in contact with and separated from each other are provided, and the sealer is provided with two heating elements,

The sealer pedestal is provided with two pressing members that are in contact with the heating element, and one cutting blade disposed at the center of the two pressing members.

A concave portion is provided between the two heating elements, the sealer and the sealer; When the cradle is in contact with the heating element of the line and the pressing member of the line is sandwiched by the folded film, the cutting blade of the line is positioned between the heating element of the line. A seal and a force-fitting device, wherein the seal and the force-fitting device are located in the recess. '

According to this seal and cutting device, the cutting blade is not heated by radiant heat or conductive heat from the heating element, so that the cutting edge becomes dull or film chips adhere to the cutting edge. Nothing. Furthermore, sealing and cutting can be performed at the same time, the loss of tact time is small, and the configuration can be simplified. Further, even when the film is as thin as 100 or less, or when the film is wrapped easily, the sealing pressure can be sufficiently obtained, so that a hermetic seal can be suitably obtained. In addition, when performing continuous operation with a short tact time, the heat storage is small, so that stable sealing and cutting can be performed immediately after the start of operation of the device.

Further, in a preferred embodiment, the sealing and cutting device includes a cover film made of a Teflon-coated polyimide resin film, and the heating element and the pressing member are folded in half with the cover film. Confront with Irum. By doing so, durability and peelability can be improved.

As a sealing method using a heating element, an impulse method, a hot plate method, a high frequency method, an ultrasonic method, or the like can be used, and an impulse method or a hot plate method is preferable in order to obtain good sealing performance. The sealing width is 2 mm or more, preferably 3 mm or more, and more preferably 5 mm or more in order to improve the sealing performance. Further, according to the present invention, in order to solve the above-mentioned problems, a film supply device for supplying a film, a film former for forming a two-fold film, and a film for folding a packaged object into two. And a sealing and cutting device that seals the packaged object between the folded films and separates it from other parts of the film to form a package. A film transport device for transporting a film, and an unloading conveyor for unloading the package,

The seal / cutting device includes a vertical sealer and a cutout for sealing and separating the film in a direction in which the film is transported, and a horizontal sealer and a cutout for sealingly separating the film in a direction perpendicular to the direction in which the film is transferred.

Further, a packaging device comprising a sealing force moving device for moving the vertical sealer / cutter and the unloading conveyor in a direction perpendicular to a film transfer direction.

Is provided.

According to this packaging device, the vertical sealer and cutter are moved in the direction perpendicular to the film transfer direction while the film former and the carry-in conveyor are fixed, and the cutting position by the vertical sealer and cutter is adjusted. can do. For this reason, it is possible to prevent the film from wrinkling.

The packaging device preferably includes a film transport device having a clamp device for gripping an end face of the film cut by the horizontal sealer and a driving device for driving the clamp device in the film transport direction. . This film transfer device grips the end face of the film, so that the film is more wasteful than the conventional film transfer device that grips the side edges of the film. Less and use less film.

Further, according to the present invention, in order to solve the problems as described above, in order to solve the problem, in the package transport device for transporting the package, comprising two conveyors having a conveyor belt arranged in series in the transport direction,

One of the conveyors is a knife edge conveyor having a radius of curvature of 1 to 1 O mm at the end of the connecting portion,

Other conveyor, transit portion is extendable telescopic conveyor, the conveyor belt of both conveyor has a 1 0 surface resistance of ⁴ to 1 0 ^{1 1} QZ cm ²

Provided is a package transport device for transporting a package in a packaging machine characterized by the above.

Since the surface resistance has the above-mentioned value in the package transport device, the packaged item at the time of transit is not damaged by impact or static electricity.

The “film” used in the present invention is a single-layer film, which is not a two-layered film like a two-fold film, but is a film that appears to be substantially one in appearance. For example, a laminate of two or more kinds of films to form a substantially one-sheet film is included as a single-layer film.

The film used in the present invention is preferably a resin film, and examples thereof include, but are not particularly limited to, polyolefins such as polyethylene, polypropylene, and polybutene, and ionomers thereof, polyethylene terephthalate, and polybutylene. Polyester such as terephthalate and polyethylene 2.6-naphthalate, nylon 6, nylon 12, etc. Polyamide, Polycarbonate, Polystyrene, Polyvinyl Chloride, Co-Polymer, Polyvinylidene Chloride, Aromatic Polyamide, Polyimide, Polyfluorocarbon, Polyvinyl Acetate, Acrylic Resin, Cellulose Resin, etc. Of these, polyolefins such as polyethylene, polypropylene, and polybutene, and their ionomers and polyvinyl acetate are preferred from the viewpoints of heat sealability and adhesiveness during packaging, and mechanical strength against packaging machines and the like. In terms of the piercing strength against the contents when packaged, polyesters such as polyethylene terephthalate, polybutylene terephthalate, and polyethylene 2.6-naphthalate, nylon 6, nylon 12, nylon 66, and nylon 610 Polyamide etc. Preferred, especially polyethylene terephthalate, nylon 6 6 are preferred. The film used in the present invention may form or laminate a conductive film by coating, laminating, vapor deposition, and the like. In such a case, a corona discharge treatment, a flame treatment, a plasma treatment, a glow discharge treatment, A surface treatment such as a roughening treatment or a known anchor treatment may be performed. Although it is possible to have a composition of several layers, it is better not to have more or less layers in terms of cost.

Further, the film used in the present invention is formed into a film by a hot melting method, a solution casting method, or the like, and then, by adhering each of them, a desired resin film can be obtained. In addition, each resin can be sequentially coated, and a resin film in which several layers are laminated by a coextrusion method can be obtained.

Here, an adhesive resin for adhering each resin film layer is used as needed. Generally, there is an olefin type, an acrylic type, a urethane type, an amide type, and a vinyl type. Is preferred. Ore Examples of the fin-based resin include low-density polyethylene, linear low-density polyethylene, high-density polyethylene, polypropylene, and ethylene-vinyl acetate copolymer, and among others, linear low-density polyethylene, polypropylene, and ethylene-vinyl acetate copolymer Is preferable, and linear low-density polyethylene is particularly preferable. The thickness of the adhesive layer is 0.5 to 10 i, respectively, preferably 1 to 1.

The film used in the present invention can also use an antistatic agent in order to suitably obtain its surface resistance value, triboelectric charging value, and damping characteristics. Preferred are cationic surfactants, anionic surfactants, nonionic surfactants, amphoteric surfactants, and mixtures thereof. Particularly preferred are nonionic surfactants such as fatty acid ester type, ether type, amino and amide type, and ethanol amide type, among which fatty acid ester type and ether type are preferred. Examples of the fatty acid ester type include polyoxyethylene glycerin fatty acid ester, sorbitan fatty acid ester, and glycerin fatty acid ester. Among them, polyoxyethylene glycerin fatty acid ester is preferably used. In addition, silicone-based antistatic agents can also be suitably used.

Similarly to the antistatic agent, a conductive material can be added to the resin film. Generally, there are metal powder, metal foil, carbon black, metal flake, metal fiber, copper-adsorbed fiber, mica and metal iodide. Among them, metal powder, carbon black and the like are preferable, and metal powder is particularly preferable. Here, the metal includes not only a pure metal but also a metal oxide, a metal sulfide, an alloy thereof, and the like. Among them, a pure metal and a metal oxide are preferable. Examples of pure metals include aluminum, nickel, chromium and copper, silver, gold, etc. Among them, aluminum is preferable, and examples of the metal oxide include tin oxide, antimony oxide, indium oxide, cesium oxide, iron oxide, and titanium oxide, and among them, tin oxide, antimony oxide, and indium oxide are preferable. Antimony oxide is preferred. The particle size of the metal powder is not particularly limited and may be appropriately selected and used.

0.1 to 30 /, preferably 0.5 to 3 //, and the amount added to the resin is generally 30 to 150 PHR, preferably 40 to: L 0 0 PHR It is. Above this range, the film becomes brittle, and below this range, favorable conductivity cannot be obtained.

Mainly, resin films such as ethylene vinyl alcohol copolymer, polypropylene, linear low-density polyethylene, and vinylidene chloride can be laminated to provide gas barrier properties such as water vapor permeability and oxygen permeability. Noh. In particular, ethylene vinyl alcohol copolymer is preferable, and as the molecular structure, the molar ratio of ethylene Z vinyl alcohol is 20 Z80 to 60, preferably 30 Z70 to 50, and the layer thickness is From the viewpoint of cost and performance, it is 2 to 15, preferably 3 to 12 ^. In addition, gas barrier properties may be imparted by laminating aluminum foil, or by forming a thin film of, for example, gay oxide, aluminum, or aluminum oxide, and it is particularly preferable to form a laminate of aluminum foil or a thin film of aluminum. A conventionally known thin film forming method such as a vacuum evaporation method, a sputtering method, an ion plating method, and an electron beam evaporation method can be used for forming the thin film.

The total thickness of the film used in the present invention is not particularly limited, but is desirably in the range of 3 to 400 ^, and is preferably 5 to 5 from the viewpoint of mechanical strength for a packaging machine and the like and piercing strength for the contents when packaged. Be in the range of 300 desirable.

The film used in the present invention can appropriately print characters and patterns on the outer surface and / or inner surface, and can also perform abrasion-resistant coating and extrusion lamination. When the film is a laminated product, characters and designs can be printed on the laminated surface.

In the present invention, the “packaged object” is not particularly limited, and may be any article. In addition, preferably, a single-layer film can be used, so that mixing of the anti-blocking powder is eliminated, so that electronic devices, electronic circuit boards and electronic materials used therein, electronic materials such as motors, medical materials such as artificial eyes, Optical materials such as plastic lenses.

In addition, a blocking sieve film containing a surfactant can be used, and it is similarly suitably used for a packaged article requiring antistatic and a fresh food requiring an antifogging effect.

BRIEF DESCRIPTION OF THE FIGURES

FIG. 1 is a block diagram of a packaging device according to a preferred embodiment of the present invention.

FIG. 2 is a simplified perspective view of a packaging device according to the first embodiment of the present invention.

FIG. 3 is a simplified perspective view of a carry-in conveyor and a film former of the packaging device of FIG.

FIG. 4 is a simplified front view of the film former of FIG.

FIG. 5 is a simplified plan view of the film former of FIG.

FIG. 6 to FIG. 13 are schematic views showing a mode of folding a film.

FIG. 14 is a simplified perspective view showing another embodiment of the film former.

FIG. 15 is a simplified perspective view of the tip of a deaeration nozzle of the packaging device of FIG.

FIG. 16 is a perspective view of a horizontal seal cutter of the packaging device of FIG. FIG. 17 is a perspective view of the vertical sealer of the packaging apparatus of FIG.

FIG. 18 is a perspective view of a sealer of a horizontal sealer and a force cutter of the packaging device of FIG. 2 and a sealer cradle.

FIG. 19 is a partially enlarged perspective view of the horizontal sealer and cutlery sealer of the packaging apparatus of FIG.

FIG. 20 is a cross-sectional view of the sealer and the sealer cradle of the horizontal sealer and cutlery of the packaging device of FIG. 2 in a separated state.

FIG. 21 is a cross-sectional view of the sealer and the sealer cradle of the horizontal sealer and cutlery of the packaging apparatus of FIG.

FIG. 22 is a perspective view of a carry-in conveyor and a carry-out conveyor of the packaging apparatus of FIG.

FIG. 23 is a simplified front view of the carry-in conveyor and the carry-out conveyor of the packaging apparatus of FIG.

FIG. 24 is a partially enlarged front view of the carry-in conveyor and the carry-out conveyor of the packaging apparatus in FIG.

FIGS. 25 to 29 are simplified partial plan views showing the operating state of the packaging apparatus of FIG. 2.

FIG. 30 is a simplified perspective view of a packaging device according to a second embodiment of the present invention.

FIG. 31 is a perspective view of a main part of the packaging device of FIG. 30.

FIG. 32 is a front view of a main part of the packaging device of FIG. 30.

FIG. 33 is a simplified perspective view of a film transfer device of the packaging device of FIG. 30. FIG. 34 is a front view of a main part of the packaging apparatus of FIG. 30.

BEST MODE FOR CARRYING OUT THE INVENTION

Referring now to the accompanying drawings, a description will be given of a packaging device according to a preferred embodiment of the present invention. I do.

First embodiment

(Overview of packaging equipment)

First, an outline of a packaging device according to a first embodiment of the present invention will be described with reference to FIG. 1 and FIG.

This packaging device 10 includes a product insertion device 12 and a separating and sealing device 14. The product insertion device 12 operates to insert the product (that is, the item to be packaged) into the folded film. The separation and sealing device 14 joins and seals the film around the product. Separate to form a package.

The product input device 12 consists of a film supply device 18 that supplies the film 16 (Fig. 2), a film former 20 that folds the film 16 in half, and a film former 16 that folds the film 16. The apparatus is provided with a carry-in conveyor 26 for carrying the product 24 therebetween, and a deaerator 28 for reducing the pressure inside the film 16. The separating / sealing device 14 includes a seal / cutting device 32 with a horizontal sealer / cutter 29 and a vertical sealer / cutter 30 for joining and cutting the film 16, and a seal / cutting device 32. The seal / cut device moving device 34 (FIG. 1) to be moved, the film transferring device 36 for transferring the film, and the unloading conveyor 40 for unloading the formed package 38 are provided.

Note that, in the first embodiment shown in FIG. 2, the seal / cut device moving device 34 is omitted.

(Film supply device)

As shown in FIG. 2, the film supply device 18 includes a support base 42, a film roll 44, and first, second and third guide rollers 46, 48 and 50. . The support base 42 can move between a position located in the base portion 52 of the product insertion device 12 as shown and a take-out position.

The film roll 44 includes a roll-shaped single-layer film and a support shaft 56. The support shaft 56 is rotatably supported by the support base 42. Alternatively, the film rolls 44 can be arranged and supported on the outer circumference of two support rolls rotatably supported by the support base.

The first, second and third guide rollers 46, 48 and 50 are rotatably supported by a support plate (not shown) of the base portion 52. At least one of these guides 46, 48, and 50 is elastically supported, and provides a film tension adjustment function that protects the film in the event that excessive tension is applied to the extruded film. Preferably, it is adapted to

As described later, the film 16 is intermittently withdrawn from the film supply device 18 by the film transfer device of the separation and sealing device 14.

(Film former)

Next, with reference to FIGS. 2 to 7, a film former 20 according to a preferred embodiment of the present invention will be described. '

As shown in FIGS. 2 to 5, the film former 20 is formed of a reversing member made of a rigid plate obtained by bending a substantially triangular plate into a U-shape. In FIGS. 4 and 5, the input comparator 26 shown in FIG. 3 is omitted. The film former 20 includes a bottom portion 60, side portions 62, and a top portion 64. The side edge of the bottom portion 60 indicated by OC in FIG. 3 constitutes the first inversion portion, the outer surface of the side portion 62 indicated by OA constitutes the second inversion portion, and is indicated by OB. The side edge of the formed top portion 64 constitutes a third inversion portion. The film 16 is divided into left and right parts along the central axis in the longitudinal direction.For example, the right side part is the first side part 66, and the left side part is the second side part 68.

"o

According to the third guide roll 50 of the film supply device 18 (FIG. 2), the film 16 is moved in the first movement direction 70 along the bottom surface of the bottom 60 of the film former 20. Moved. The first side portion 66 of the film 16 is sequentially turned by the first reversing portion OC such that the lower surface faces upward and proceeds from the first movement direction 70 to the second movement direction 72. It is inverted. In this embodiment, the first movement direction and the second movement direction have an angle of about 90 °. The second side edge portion 68 of the film 16 is turned over by the second turning portion 0A so that the lower surface faces upward and moves in the moving direction opposite to the first moving direction 70. Thereafter, the third reversing unit OB sequentially reverses the upper surface so that the lower surface thereof faces downward again and proceeds substantially in the second movement direction 72. In this way, the film 16 is folded in two.

Further, with reference to FIGS. 6 and 7, the basic operation of the film former 20 is as follows. That is, first, as shown in FIG. 6, the film 16 is folded in a direction of about 90 ° with the lower surface facing upward, and the folded portion is aligned with the longitudinal central axis of the film 16. Fold in half the center. By folding in this manner, the lower surface of the film 16 constitutes the inner surface of the folded film 16, and the inner surface constitutes a sealing surface to be adhered to each other.

The film former 20 folds the first side edge portion 66 of the film 16 at the first reversal portion OC with respect to the sealing surface (lower surface) to form a second fold. The inverted portion OA of the second side edge portion 68 is formed into a mountain fold with respect to the sealing surface (lower surface), and the third inverted portion OB is formed by folding the second side edge portion 68 with the sealing surface (lower surface). On the other hand, it will be a mountain fold.

The film former 20 is not limited to the above-described embodiment, but may be configured in various other embodiments.

For example, as shown in FIG. 7, in the above-described embodiment, the first movement direction 70 and the second movement direction 72 have an angle of about 90 °, for example, as shown in FIG. As shown in FIG. 9, the first moving direction 70 and the second moving direction 72 may have an angle other than 90 °.

In addition, as shown in FIG. 7, in the above-described embodiment, the direction of the second inversion portion 0A is the same as the second movement direction 72 indicated by OM, however, FIGS. As shown in the figure, the direction of the second inversion section OA and the second movement direction 72 indicated by 0 M may be configured not to match.

As shown in these drawings, these angular relationships are as follows.

AO C + ZBOM = π

In practice, it is not necessary to be exactly ΤΓ (radian), but it is preferable that this value be 7Γ (1 ± 1/8) radian in order to prevent the occurrence of wrinkles when folding the film in half. .

Further, as shown in FIG. 7, when a perpendicular is drawn from the line segment BC to the point 0 and the point is D, it is preferable that the following expression is satisfied.

0 <ZAOC = Β ΟΜ <π Also in this equation, AOC = ZBOM is not necessarily required in practice.However, in order to prevent the occurrence of wrinkles when folding the film, the difference between these values must be ± ττ Ζ 8 radians or less. Is preferred.

As shown in FIGS. 2 to 5, the film former 20 preferably has a configuration in which the film is continuously inverted to prevent the generation of wrinkles and to reduce the feeding resistance. As shown in FIG. 14, a reversing member formed by connecting a film former to a substantially trapezoidal plate 74 and a substantially triangular plate 76 by pillars 78 can be used. It is also possible to use a reversing member composed of three rods or linear bodies whose surfaces have been subjected to a low friction treatment.

The thickness of the material used for the film former 20 or the diameter of the wire or rod is 0.2 to: L 0.0 mm, preferably 0.5 to 5.0 mm, more preferably 1. 0-3.0 mm. If this value is too large, wrinkles are likely to occur in the film former, and if it is too small, the feeding resistance in the film formater becomes large.

(Carry-in conveyor)

As shown in FIG. 3, the carry-in conveyor 26 includes a drive roller 90, a conveyor table 92, a guide roller 94, and a conveyor belt 96 supported by these.

The drive roller 90 is intermittently driven at a predetermined timing by a drive mechanism (not shown) to drive the conveyor belt 96.

The conveyor table 92 is configured such that the radius of curvature of the rear end portion 98 is small, and the radius of curvature of the conveyor belt 96 that runs therearound is 2 to 10 mm, preferably 3 to 5 mm. Conveyor belt 9 6 has a surface resistance of 1 0 ⁴ to 1 Bruno cm ^2, preferably configured to be ^{^{1 0 6 ~1 0 8 ΩΖ cm}} 2.

The carry-in comparator 26 and the carry-out conveyor 40 constitute a package transfer device as described below. These will be described in detail later.

(Deaerator)

As shown in FIG. 2, the deaerator 28 includes a deaeration nozzle 100, a drive cylinder 102 connected to the deaeration nozzle 100, a flexible tube 104, A leak valve 106 and a vacuum pump 108 as pressure regulators connected to the flexible tube 104 are provided.

The tip of the degassing nozzle 100 has, for example, the shape shown in FIG. 15 and has a suction port 101 at the tip. The drive cylinder 102 moves the deaeration nozzle 100 in the longitudinal direction at a predetermined timing. The vacuum pump 108 sucks air at a predetermined timing from the suction port 101 of the deaeration nozzle 100 via the leak valve 106 and the flexible tube 104.

(Seal and force device) ''

Next, the seal and cut device 32 will be described with reference to FIGS. 2, 16 to 21. FIG.

As shown in FIG. 2, the seal / cutting device 32 is provided with a horizontal sealer / cutter 29 and a vertical sealer / cutter 30. These are sealed and cut in an L-shape in one operation, and the side edges and the rear end of one package and the front end of the next package are sealed and cut.

As shown in FIGS. 2 and 16, the horizontal sealer / cutter 29 is composed of two vertical seals fixed to the frame 110 of the separating and sealing device 14 (FIG. 2). Support rods 1 1 2 and 1 1 4, a support plate 1 1 6 supported on the support rods 1 1 2 and 1 1 4 movably in the vertical direction, and a support plate 1 3 by three poles 1 1 8 6 fixed sealers 1 2 0, 2 support rods 1 1 2, 1 1 4 A pair of support members 1 2 2 supported movably up and down, and fixed to support members 1 2 2 And a link device 126 for moving the sealer 120 and the sealer receiver 124 up and down.

The sealer 120 and the sealer cradle 124 are pressed against each other to form two seal strips along the longitudinal direction thereof and a cutting line at the center thereof. These configurations will be described later in detail.

The link device 126 is connected to the main shaft 128, a drive cylinder 130 for reciprocating the main shaft 128 over a predetermined rotation angle, and the main shaft 128, and a support plate is provided according to the rotational motion of the main shaft. 1 1 6 and sealer 1 2 0 move up and down 2 drive rods 1 3 2 and support member 1 2 2 and sealer cradle 1 2 4 move up and down according to rotational movement of main shaft 1 2 8 1 Drive rods 1 3 4.

Thus, by the driving force of the driving cylinder 130 of the link device 126, the sealer 120 and the sealer pedestal 124 are moved at predetermined timings as shown in FIG. 16 and FIG. Can be moved between the separated position as shown in Figure 2 and the mutually pressed position as shown in Figure 21.

As shown in Fig. 2 and Fig. 17, the vertical sealer 30 is provided with two vertical fixing devices fixed to the frame 110 of the separating and sealing device 14 (Fig. 2). Support bar 13 6, a first support frame 13 8 supported vertically movably by the support bar 13 6, an air cylinder 14 40 fixed to the first support frame 13 38, and support Frame 1 38 in the longitudinal direction (right of Fig. 17 (Upper, lower left) Support plate 1 4 2 supported movably, Sealer 1 4 6 fixed to support plate 1 4 2 by 3 poles 1 4 4 and 2 support rods 1 3 6 A second support frame 148 supported movably in the vertical direction, an air cylinder 150 fixed to the second support frame 148, and a second support

-, On the frame 14 8, the sealer pedestal 15 2 supported movably in the longitudinal direction (upper right and lower left in FIG. 17), and the sealer 146 and the sealer pedestal 15 2 It has a link device 154 for moving it.

The sealer 146 and the sealer pedestal 154 operate in the same manner as the sealer 120 and the sealer pedestal 124 of the horizontal sealer 'cutter 29'. About these configurations

,. Details will be described later.

Due to the driving force of the driving cylinder 156 of the link device 154, the sealer 146 and the sealer receiving pedestal 152 came into contact with each other at a predetermined timing with the separated positions shown in FIG. You can move between positions. Next, referring to FIGS. 18 to 21, the system of the horizontal sealer cutter 29 is described.

_{The 5} -roller 120 and the sealer receiver 124 will be described. The sealer 1 4 6 and the sealer cradle 1 5 2 of the vertical sealer / cutter 30 are respectively configured as: the sealer 1 2 0 and the sealer cradle 1 2 4 of the horizontal sealer / cutter 2 9. Operate.

The sealer 120 includes a heating device 100 and a sealer cover part 72. The heating device 170 is fixed to the pole 1 18, and the sealer cover part 1 72 has a linear bearing 1 74 fitted to the pole 118, and can be moved in the vertical direction It is supported by.

As shown in FIG. 19, the heating device 170 includes a concave body 1 76, insulating members 1 78 provided on both left and right ends of the concave body 1 76, and an insulating member 1 7 8 and a support bracket 180 fixed to the support bracket 8. The supporting bracket 180 is provided with a pair of heating element tensioning brackets 182 so as to be pivotable. As shown in FIG. 20, an insulating heat radiation sheet 184 made of an elastic body is provided on the bottom surface of the concave body 176, and a heating element 186 is provided therebelow. The end of the heating element 186 is fixed to the heating element tensioning bracket 182, and a spring 188 is arranged between the heating element tensioning bracket 182 and the insulator to apply a predetermined tension to the heating element 186. .

Further, a wire 190 connected to a power source (not shown) is connected to the heating element tensioning bracket 182. At the other end (not shown), the pair of heating element tensioning members 182 are electrically connected by wires. Therefore, the current from the power source is generated by the wire 190, the heating element tensioning bracket 182, the heating element 186, the heating element tensioning bracket at the other end, the wire (not shown), the other heating element tensioning bracket, the heating element 186, and the heat generation. It will flow through the body tension fitting 182 and the wire 19.

As the heating element 186, if the specific resistance is too large, the amount of heat generation becomes large and adverse effects due to heat storage occur.If the heating element 186 is too small, the sealing resin cannot be sealed due to insufficient melting of the sealing resin. US, iron-chromium, kantalum alloys and the like are preferable, and nichrome and SUS are particularly preferable. In this embodiment, a heating element for a horizontal cutter 29 is used as a heating element using Nippon Metal Industries' two-chrome wire, NTK No. 1, 3.2 mm width χθ. 12 mm thickness, 108 QZcm. As for the heating element 186 for the length of 42 cm and the heating element 186 for the vertical sealer and cutlet 30, a thing of 64 cm in length was used.

The sealer cover portion 172 includes the linear motion bearing 174 as described above and the linear motion Sealer cover 192 fixed to bearings 1Ί4, mounting bracket 196 attached to sealer cover 192 with screws 194, holding band 1980 made of silicon rubber, It comprises a cover film 200 and a cover film fixing bracket 202 to which the cover film 200 is fixed. By tightening the screws 194, the mounting bracket 196 fixes the holding band 198 and the cover film fixing bracket 202 to the sealer cover 192.

The pair of holding strips 198 and the cover film 200 extend over the entire length of the sealer cover portion 172 in the longitudinal direction. A slit is provided between the two cover films 200. Is provided.

In the case of the cover film 200, the heat melting properties, the releasability of the cooled film and the heating element are important factors in the sealing properties (seal strength, appearance such as burrs, edge cut, etc.). Particularly, a polyimide resin film is preferable. Furthermore, when the thickness of the cover film 200 is small, the service life is short, and when the cover film 200 is thick, a large amount of heat is required to perform a large appropriate sealing. Therefore, it is preferably 30 to 1251, and particularly preferably 50 to 1001. In this embodiment, as the cover film 200, a Kapton film 300 F021, manufactured by Toray DuPont, a single-sided Teflon coat type, 75 // thick polyimide resin film was used.

As shown in FIG. 20, the sealer pedestal 124 has a base member 204 fixed to a pair of support members 122 (FIG. 16), and an upper surface of the base member 204. Cutting blade fixing bracket 206 fixed to the cutting blade, fixing blade 202 fixed to the cutting blade fixing bracket 206, and a plurality of circles provided on the base member 204. A spring 212 disposed in the cylindrical hole 210, a guide rod 214 extending into the hole 210 through the hole of the cutting blade fixing bracket 206, and a two-strand pressing body 215 fixed to the guide rod 214 And The pressing body 215 includes a pressing plate 216 made of aluminum, an insulating heat radiation sheet 218, and a Teflon sheet 220.

The cutting blade 208 and the pressing body 215 extend over the entire length of the sealer pedestal 124 in the longitudinal direction. When a downward force is applied from the upper surface of the Teflon sheet 220, the guide rod 214 is pushed down against the spring 212, whereby the pressing body 215 is pressed down, and the two-strength pressing body 215 From between, the cutting blade 208 protrudes.

The cutting blade 208 preferably has a shape that forms a zigzag cutting edge so that the package can be easily opened.

The insulating heat-dissipating sheet 184 of the heating device 170 and the insulating heat-dissipating sheet 218 of the pressing body 215 are elastic bodies and need to have flexibility, heat dissipation, heat resistance, and insulation. Accordingly, silicon rubber and fluoro rubber (Viton trademark) are preferable, and among them, silicon rubber is particularly preferable in view of workability, kneading properties of other substances, and the like. The hardness is preferably 30 to 70 ° (Shore hardness, A type), and particularly preferably 40 to 60 ° (Shore hardness, A type). Furthermore, the insulating heat dissipating sheet 184 and 218, thermal conductivity, rather preferably ^{has, 10- 3 ~ 10 ca 1 Z} cm · sec · ° C, more ^{preferably, 1 X 10- 4 ~8 xl O-} 4 cal / cm * sec * ° C. If this value is too small, it is necessary to increase the amount of the thermal conductivity imparting agent added to the elastic body, and as a result, the insulating property is reduced and electric leakage may occur. Furthermore, there is a risk that the elastic life will be shortened. On the other hand, if this value is too large, heat dissipation will be reduced and continuous The heat storage increases during cooling, causing problems such as cut edges of the seals, making it impossible to seal properly. If the thickness of the insulating heat radiation sheets 184 and 218 is too large or too small, any of the above characteristics is not satisfied.

In this embodiment, the insulating heat dissipating sheet 184, Fuji Polymer Industries Co., Ltd., Ltd., Sarcon 85 F- 52W, 1 sheet 0. 85 mm thick X, Shoa hardness (A type) 50 °, the thermal conductivity 2. 2x10- ³ Using cal zcm 'sec * ° C, three sheets of the same product, 0.85 mm thick x 3 sheets, were used as insulating heat dissipation sheet 218.

The sealer 120 and the sealer cradle 124 operate as follows.

The folded film is placed between the sealer 120 and the sealer cradle 124. For example, the sealer 120 and the sealer pedestal 124 are brought close to each other by the link device 126 as shown in FIG. 16, and the silicone rubber pressing member of the sealer 120 is sandwiched between the folded films. The band 198 and the pressing body 215 of the sealer cradle 124 are in contact with each other. When the sealer 120 and the sealer pedestal 124 are further closer to each other, an upward force is applied to the pressing band 198 of the sealer 120 by the pressing body 215 of the sealer pedestal 124, and the sealer cover is applied to the heating device 170 of the sealer 120. The part 172 rises, and finally, as shown in FIG. 21, the heating element 186 of the sealer 120 and the pressing body 215 of the sealer pedestal 124 separate the cover film 200 and the folded film. We sandwich and face. As the sealer 120 and sealer pedestal 124 come closer together, the spring 212 of the sealer pedestal 124 is compressed. And the heating element of the cutting blade sealer 120 A pressure of preferably 2-6 kg / cm, more preferably 3-5 kcm ² is applied between 186 and the pressing body 215 of the sealer pedestal 124.

At this time, from a power source (not shown) to a pair of heating elements 186 via a wire 190, preferably for 15 to 40 amps for 0.5 to 3.0 seconds, particularly preferably for 20 to 20 seconds An impulse current of 3030 amps X 1.0 to 2.5 seconds is passed, the heating element 186 is heated, and the folded film is thermally bonded along the two lines of the heating element 186. After applying current, maintain this condition and cool the film. The cooling time is preferably longer in consideration of the sealing characteristics, but is preferably 1 to 5 seconds in consideration of the processing capacity.

Simultaneously with the thermal bonding as described above, the spring 212 is compressed as described above, so that the cutting blade 2 protrudes above the pressing body 215 and cuts the two folded films, Through the slit between the cover films 200, it enters the recess of the recess body 174. At this time, the cutting blade 200 does not contact the cover film 200 and the concave body 174.

Thereafter, the sealer 120 and the sealer cradle 124 are separated from each other.

In this embodiment, a method of heating by an impulse current is used as described above. Alternatively, a method such as heat sealing, ultrasonic wave, or high-frequency welder may be used. However, the impulse method, which has good work efficiency and less formation of a bad seal, is optimal.

(Film transfer device)

As shown in FIG. 2, the film transfer device 36 is composed of a pair of endless belts 222, 224, belt supports 226, 228 that support them, and belt supports 226, 228. Fixed to body 110 Support members 230 and 232.

The belt supports 222, 228 are composed of a plurality of rollers and a support plate for rotatably supporting these rollers. One of the rollers is driven to rotate by a driving device (not shown), and the endless belt 222 is formed. , 224 are rotated in the opposite direction at the same speed.

The endless belts 2 2 2 and 2 2 4 have a linear portion that presses against each other across the film, and the linear portion is a side edge 2 of the film 16 that is not cut by the horizontal sealer / cutter 29. Grab 25 and transport film 16 in its longitudinal direction.

The film transfer device 36 is preferably installed so as to be movable in the horizontal direction, that is, in the direction perpendicular to the longitudinal direction of the film, so that the film can be appropriately transferred even if the width of the film 16 changes.

(Unloading conveyor)

Next, the carry-out conveyor 40 will be described with reference to FIG. 2 and FIGS. 22 to 24.

As shown in FIGS. 22 to 24, the unloading conveyor 40 has a drive roller 234, a guide roller 2336, a fixed roller 2338, and two moving rollers 24. 0, 2 42, and a conveyor belt 2 43 supported by these. Further, a stationary roller 2 rotatably supports the driving roller 2 34, the guide roller 2 36, and the fixed roller 2 38. The frame 2 44 (FIG. 22), the movable frame 2 46 that rotatably supports the two moving rollers 2 40, 2 42, and the movable frame 2 46 move in a predetermined moving direction. And an air cylinder 250 that moves with respect to the movable frame 246 and the fixed frame 244. The drive roller 234 is driven at a predetermined rotational speed by a drive device (not shown), and drives the conveyor belt 243 at the same speed as the compare belt 96 of the carry-in conveyor 26.

It is preferable that a belt having the same characteristics as the conveyor belt 96 of the carry-in conveyor 26 be used as the conveyor belt 243.

The air cylinder 250 moves the movable frame 2 46 and the two moving rollers 2 40 and 2 42 between a protruded position shown by a solid line in FIG. 23 and a retracted position shown by a broken line. Let me move. In any position, the length of the conveyor belt 243 supported by these rollers does not change, so that the tension of the conveyor belt 243 is kept constant.

When the movable frame 2 46 is in the retracted position indicated by the broken line in FIG. 23, the horizontal sealer cutout 29 (FIG. 2) operates, and the sealer 120 and the sealer support stand are actuated. 1 2 4 (FIG. 16) press against each other to cut transversely and seal film 16. Then, the sealer 120 and the sealer receiver 124 move away from each other, and the moving rollers 240 and 242 move to the protruding positions shown by the solid lines in FIG. The side edge 2 25 (FIG. 2) of the film 16 is pulled by the film transfer device 36, and the product 24 placed in the folded film 16 is unloaded from the loading conveyor 26. It is moved to conveyor 40.

As described above, the conveyor table 92 of the carry-in conveyor 26 has a small radius of curvature at the rear end portion 98, and the radius of curvature of the conveyor belt 96 that rotates therearound is 2 to 10 mm, preferably 3 to 10 mm. It is configured to be 5 mm. For this reason, as shown in FIG. 22, only a small gap is formed between the rear end portion 98 of the carry-in conveyor 26 and the moving roller 242 of the carry-out conveyor 40. No impact when connecting. When the radius of curvature is less than 2 mm, the bending angle of the conveyor belt increases, and the life of the conveyor belt is significantly shortened.

Further, the conveyor belt 243 of the delivery conveyor 40, like the conveyor belt 96 of the input conveyor 2 6, the surface resistance ^{is, 1 0 4 ~1 0 ΗΩ /} cm preferably to ^{^{1 0 6 ~1 0 8 ΩΖ cm}} 2 It is configured so that The surface resistance is equal to or 1 0 ⁴ QZcm ² below, only the resistance value is low, for example, if the conveyor belt is charged for any reason, to discharge the electronic component on the conveyor belt, the risk of damage to electronic components Occurs. In this embodiment, as a compare belt 243 con base Aberuto 96 and out conveyors 40 of input conveyor 26, Samsung belt made, Neofuretsu box start U, the type NS 41 UDS, 0Z2 BK :, surface resistance ¹⁰ β Ω Zcm ² The conveyor belts 96 and 243 were rotated at a speed of 1 OmZmin using a conveyor table 92 of the carry-in conveyor 26 having a rear end 98 having a radius of curvature of 4 mm. The running belt voltage 'of the conveyor belts 96 and 243 rotated in this manner was less than the measurement limit of the super-precision static electricity meter made by Shisido Electrostatics, "Statillon S type". Furthermore, when a hard disk (105 mm wide x 155 mm long x 15 mm thick) manufactured by Shinshu Fuji Electric was transported on the compare belts 96 and 243, no static electricity was observed. In addition, the shock level at the time of transit was measured using a shock sensor made by Fuji Photo Film (3 Omm width x 5 Omm length x 15 mm height). The result was less than 15 G.

(Actuation)

Next, the operation of the first embodiment will be described with reference to FIGS. 25 to 29. I do.

As shown in FIG. 2, the film 16 is supplied from the film roll 44 of the film supply device 18 to the first guide roll 46, the second guide roll 48, and the third guide roll 50. Through the film former 20. Then, the film 16 is folded in two by the film 'former 20', and the horizontal sealer 'cutter 20 is separated from the sealer 120 and the sealer receiving stand 124, and the vertical sealer cutter 30'. Is supplied between the separated sealer 1 4 6 and the sealer cradle 1 5 2. The overlapped two edges 2 25 of the folded film 16 are gripped between the two endless belts 2 2 2 2 4 of the film transfer device 36.

The package 24 is placed at a predetermined position on the carry-in conveyor 26 using an automatic device such as a conveyor (not shown) that automatically supplies the package, or manually.

When this apparatus is operated, the film transfer device 36 grasps the edge 2 25 of the film 16 and transfers the film 16 at a predetermined speed, and the conveyor belt 96 of the carry-in conveyor 26 and the carry-out conveyor 26. The conveyor belt 24 of 43 is driven at the same speed as the transfer speed of the film 16 by the film transfer device 36.

The film 16 is transported a predetermined distance, and the object 24 on the carry-in conveyor 26 is moved to a position adjacent to the horizontal sealer / cutter 29, and the film 16 and the object 24 are stopped. I'm sullen. Thereafter, the horizontal sealer cutter 29 and the vertical sealer cutter 30 are operated, leaving the film edge portion 222 and removing the central portion of the film 16. The end of the film 16 is cut and sealed by the transverse sealer cutter 19, The state shown in Fig. 25 (a) and (b) is obtained.

Then, the second packaged object 24 is placed at a predetermined position of the carry-in conveyor 26 using an automatic device or manually.

Thereafter, the film 16 and the package 24 are transferred to the positions shown in FIGS. 26 (a) and (b) by the film transfer device 36, the carry-in conveyor 26 and the carry-out conveyor 40. At this time, the sealer 1 46 of the vertical sealer's cutter 30 and the sealer receiving stand 15 2 are moved by the air sinders 140 and 150 (Fig. 16), respectively, as shown in Fig. 26. As shown in (a), it is located at a position that partially overlaps the sealer 120 and the sealer cradle 124 of the horizontal sealer / cutter 29. With the transfer of the packaged object 24, the deaeration nozzle 100 is moved in the longitudinal direction by a driving cylinder 102, and the suction port of the deaeration nozzle 100 is provided with a horizontal sealer / cutter 2 It is placed between the inner surface of the folded film exceeding 9 and the package. Then, at this position, the sealer 14 46 and the sealer pedestal 15 of the vertical sealer cutter 40 are pressed against each other, and the folded film 16 is moved along its side edge. , Cut and seal on both sides of the cutting line. In this way, as shown in FIG. 27, the two-folded film 16 is sealed at three parts: the folded edge, the vertical vertical sealing edge, and the longitudinal sealing edge. A bag is formed.

Then, the sealer 1 46 and the sealer cradle 15 2 of the vertical sealer and cutter 30 are moved horizontally by the air sinders 140 and 150, respectively, as shown in Fig. 27 (a). Sheila Katsuu 29 Moved to a position where it does not overlap with Sheila 120 and Sheela Cradle 1 24 on 29. Then, the horizontal sealer and the sealer 120 in the evening 29 fall, holding down the film 16 and in this state Then, the vacuum pump 108 (Fig. 2) operates, sucking air from the suction port of the deaeration nozzle 100, and the air in the bag formed as described above by the film 16 is sucked. .

Next, the deaeration nozzle 100 is returned to the retracted position as shown in FIG. 28 (a) by the drive cylinder 102. Then, the sealer 120 of the horizontal sealer / cutter 29 and the sealer pedestal 124 are pressed against each other to cut the folded film 16 perpendicularly to its moving direction, Seal on both sides of the cutting line and then separate from each other to form a package 38 o

Then, as shown in FIG. 29, the unloading conveyor 40 is operated, and the package body 38 is transferred to the next conveyor (not shown), and the vertical sealer's sealer 144 of the cutter 30 and the sealer are transported. As shown in Fig. 29 (a), the receivers 152 and the sealers 120 and 150 of the horizontal sealer / cutter 29 are respectively provided by the air cylinders 140 and 150. It is returned to a position that partially overlaps 1 2 4. Then, the state returns to the state shown in FIG. 25, and the second packaged object and the third packaged object are sequentially packaged.

When the packaged object 24 is an article having a large thickness, the film 16 is pulled when the film 16 is cut perpendicularly to the moving direction by the vertical shutter / cutter 29. For this reason, the sealers 12 and 4 of the vertical sealer cutlet 29 cut the film 16, seal it on both sides of the cutting line, and then separate from each other. As shown in FIG. 29 and the like, the vertical cutting 緣 of the film 16 moves to the packaged object 24.

Second embodiment

(Overview of packaging equipment) The packaging device according to the second embodiment of the present invention also has the configuration as shown in FIG. 1, but differs from the first embodiment in that a seal / cutting device 32 and a seal / cutting device moving device 34, and the film transfer device 36 are different.

That is, as shown in FIG. 30, according to the second embodiment, as in the first embodiment, the film 16 is supplied from the film supply device 18 to the film 'former 20, and 24 is placed on the carry-in conveyor 26, and the object 24 is placed in the film 16 folded in two by the film former 20.

As shown in FIG. 30, according to the second embodiment, the horizontal and vertical directions are provided by the horizontal sealer / cutter 3290 and the vertical sealer / cutter 3330 of the seal / cutting device 33. Then, the horizontal position of the vertical seal / cut 330 is adjusted by the seal / cut device moving device 34. Further, the film 16 is transported by the film transport device 336, and the package is transported by the pair of unloading conveyors 340 and 341 in a direction perpendicular to the moving direction of the film 16. .

(Seal and power device and seal and power device)

The seal and cutting device 332 will be described with reference to FIGS. 31 and 32. FIG. In FIG. 31, in order to clearly show the seal / cutting device 33 2, the film transfer device 3 36 and the unloading conveyor 3 40 0.34 1 shown in FIG. 3 The film presser 3 52 and the film jumper 3 54 shown in Fig. 3 and Fig. 3 3 have been removed. In Fig. 32, the unloading conveyors 3 4 0 and 3 4 1 have been removed. I have.

As shown in Fig. 31, the seal and cutting device 3 3 2 is composed of two guide rails 3 58 fixed to the top surface of the frame 3 56 and a guide rail 3 5 8 A support frame 360 mounted slidably in the direction of movement of the film, an air cylinder 362 that drives the support frame 360, and a horizontal sealer cut on the support frame 360 The evening is equipped with 329 and vertical sheila 'Katsuta 330'. The vertical sealer / cutter 330 is supported on a support frame 360 by a sealing device moving device 34.

The support frame 360 includes two vertical plates 366 on the guide rail 358, and a guide 368 that supports the vertical plate 366 on the guide rail 358 so as to be slidable in the vertical direction. It has a horizontal bar 370, a first horizontal guide rail 372, and a second horizontal guide rail 374. .

The drive shaft 3 75 of the air cinder 3 62 is connected to the horizontal bar 3 70, and the operation of the air cinder 36 2 causes the support frame 360 to move in the moving direction, that is, the vertical direction, to the film 16. Can be

As shown in Fig. 31, the horizontal sealer and cut-out support are fixed to the vertical plate 36 6 by the fixing device 37 6 adjacent to the second horizontal guide rail 37 4 A member 378, a link bar 380 pivotably connected to the support member 378, and an air cylinder 382 pivotally connected to the support member 378 and the link bar 380. A support plate 384 pivotally connected to the link bar 380, an elastic member 386 pivotally connected to the support member 378 and the support plate 384, and a support plate. A sealer 388 fixed to 384 and a sealer receiving base 390 fixed to the support member 378 are provided.

The link bar 380 is swung around the swivel connecting shaft 391 with the support member 378 by the air cylinder 382. The support member 378, the link bar 380, the support plate 384 and the elastic member 386 form a quadrilateral, and the link bar 380 and the support member 378 are formed by the air cylinder 382. of When the sealer 3888 and the sealer receiver 3900 are turned around the swivel connecting shaft 391 and come into contact with each other via the film 16, the sealer 3888 and the sealer receiver 3900 are brought into contact with each other. Are parallel to each other. The elastic member 3886 elastically adjusts the angle when the sealer 3888 and the sealer cradle 3900 are not parallel when they come into contact with each other.

The sealer 388 and the sealer pedestal 390 have the same configuration as the conventional sealer and the sealer pedestal, but the horizontal sealer described with reference to FIGS. It can also be configured as the sealer 120 of the cutter 29 and the sealer stand 124.

The sealing device moving device 34 includes a guide 392 that slides on the first horizontal guide rail 372, a stepping motor 394 fixed to one of the vertical plates 366, and a stepping. And a ball screw 3 9 & connected to the drive shaft of the motor 3 94.

The support member 398 of the vertical sealer cutter 330 is fixed to the guide 392, and is supported when the support member 398 is moved in a direction perpendicular to the moving direction of the film 16. The member 398 is maintained in a direction parallel to the moving direction of the film 16.

The ball screw 3996 is rotatably supported by bearings 400 and 401 fixed to the vertical plate 3666, and is fixed to the support member 3998 of the vertical sealer and cutter 330. It is screwed into female screw 402. Further, a roller 405 that rotates on the second horizontal guide rail 374 is provided on the support member 398.

When the stepping motor 3 94 rotates, the ball screw 3 96 rotates, and the supporting member 3 98 According to the rotation direction of 94, the film 16 is moved right or left in a direction perpendicular to the movement direction.

The vertical sealer / cutter 330 is composed of a support member 398 fixed to the guide 392 as described above, and a link bar rotatably connected to the support member 398.

_; Single 4 0 4, the support member 3 9 8 and link bars 4 0 air cylinder 4 0 6 pivotally connected to the 4, the support plate 4 0 8 which is pivotally connected to Link Bar one 4 0 4 The elastic member 410 that is pivotally connected to the support member 398 and the support plate 408, the sealer 412 fixed to the support plate 408, and the support member 398 And a fixed sealer receiver 4 1 4. They are,

. It is configured and operates in the same way as the corresponding members of the horizontal sealer and cutter 329.

(Film transfer device)

Next, the film transfer device 336 will be described with reference to FIGS. 32 to 34. FIG. The film transfer device 336 is preferably configured as shown in FIG.

It cooperates with the film hold-down device 352 and the film jumper 354 as shown in FIG. '

As shown in FIGS. 32 and 33, the film transfer device 336 is provided with a rail 4 2 4 fixed to the ceiling portion 4 2 0 of the frame by a support rod 4 2 2, and a rail 4 2 4. With a fixed drive 4 2 6 and a drive 4 2 6

, Driven burley 4 28, driven burley 4 30, timing belt 4 3 2 supported by drive burley 4 2 8 and idler pulley 4 3 0, and rail 4 2 4 by guide 4 3 4 Slidably supported, fixing bracket 4

First base plate connected to timing belt 4 3 2 by 3 6

4 3 8 and clamping device 4 4 0 connected to the first base plate 4 3 8 And the second base plate slidably supported by the rails 4 2 4 and releasably connected to the first base plate 4 3 8 by the air cylinder 4 4 2

And a corner holding device 4 4 6 installed on the second base plate 4 4 4.

The drive device 426 includes a steering motor 448 connected to a drive pulley 428 via a reduction gear. The rotation of the steering motor 448 causes the first base plate 438 to be fixed. Move a predetermined distance in the direction of.

The clamp device 4440 includes a first clamp bar 452 fixed to the first base plate 438 by a fixing member 450, and a second clamp bar rotatably mounted on the first clamp bar 452. 4 5 4 and spring 4 5 6 to force second clamp bar 1 4 5 4 to the open position and 2nd clamp bar 4

An air cylinder 458 for forcing the cylinder 54 into the closed position is provided.

The second clamp bar 4 54 is normally in the open position by the spring 4 56, and moves to the closed position when the air cylinder 4 58 is actuated, and the film 1 together with the first clamp bar 4 52 is moved to the closed position. Hold the tip of 6.

The second clamp bar 454 is preferably provided with a tear port cutter 460. Used when the seal and cutting device forms a straight cutting edge. That is, the tearing cutter 460 forms a cut on the outside of the sealed seal of the package so that the package can be easily opened. The corner presser 4 4 6 includes an air cylinder 4 62 and a presser 4 64 connected to the drive shaft of the air cylinder 4 62. 4 6 4 Move down to the corner of the sealed end of the film 16 and remove it from the conveyor 3 4 1 conveyor belt 4 6 δ (Fig. 30) and force the sealed film 16 so that it does not wrinkle or wrinkle.

The film transport device 3336 preferably cooperates with a film hold-down device 352 and a film flip-up device 354 as shown in FIGS. 32 and 34.

The film holding device 35 2 comprises a first holder 4 6 6 fixed to a frame 3 5 6 (Fig. 32), an air cylinder 4 6 8 fixed to the frame 3 56, and an air cylinder. A second holder 47 is fixed to the drive shaft 468. Preferably, the first holder 466 and the second holder 470 extend over the entire width of the folded film 16. By the operation of the air cylinder 468, the first holder 466 and the second holder 470 move between the separated position and the position in contact with the film 16 therebetween.

The film flip-up device 354 includes an air cylinder 472 and a blade 474 installed at the sealer receiver 390 of the horizontal sealer cutter 329. By operating the air cylinder 472, the tip of the film 16 is flipped up by rotating the blade # 474.

The film holding device 352 and the film flipping device 3554 ensure that the tip of the film 16 is disposed between the first clamp bar 452 and the second clamp bar 454.

(Unloading conveyor)

As shown in FIG. 30, this packaging apparatus includes a first unloading conveyor 340 and a second unloading conveyor 341.

These unloading conveyors 34 0 and 34 1 Unload the package in a vertical direction.

Between the first unloading conveyor 340 and the second unloading conveyor 341, a sealer pedestal 414 of the vertical sealer cutter 330 is arranged.

The first unloading conveyor 340 transfers the formed package to the second unloading conveyor 340 over the sealer receiving table 414. The package is transferred from the second conveyor 340 to another conveyor (not shown), or the package is manually picked up from the second conveyor 340.

These unloading conveyors 340 and 341 are supported, for example, by a support member 398 of a vertical sealer / cutter 330, and the vertical sealer / cutter is moved by a seal / cutter moving device 34. When the 330 is moved left and right in a direction perpendicular to the moving direction of the film 16, the unloading comparators 34 0 and 34 1 are also moved right and left. Preferably, a suction nozzle is provided between the second unloading conveyor 341, and the sealer pedestal 414 of the vertical sealer cutter 33, so that the cut chips are sucked. I have.

(Actuation) ''

Next, the operation of the second embodiment will be described with reference to FIGS. 30 to 34.

As in the first embodiment, the film 16 is supplied from the film supply device 18 to the film former 20 and is folded in two. The package 24 is placed in the film 16 which is folded by the carry-in conveyor 26.

4 o

If necessary, the stepper motor 394 of the seal / cutting device moving device 34 operates to move the vertical sealer / cutter 330 horizontally and move it vertically. Adjust the operating position of Sheila Katsu 3330.

By means of the stepping motor 448 of the film transfer device 336, the clamping device 4440 is located adjacent to the sealer support 3900 of the horizontal sealer 'cutter 3229' as shown in Fig. 34. Moved to the position. At this time, the second clamp bar 4 54 of the clamping device 4440 is in the open position, the horizontal sealer's cutter 329 is at the most right position in Fig. 32, and the horizontal sealer's cutter is The sealer pedestal 390 of 329 is located below the first holder 466 of the film presser 352.

Lower the second holder 470 of the film holding device 352 shown in Fig. 34, and close the first holder 466 and the second holder 470, and seal between them. Press down the end of the film 16 By operating the air cylinder 472 of the film lifting device 354, the end of the film 16 projecting from the first holder 466 and the second holder 470 of the film holding device 352 is moved upward. Jump up. This ensures that the tip of the film 16 is disposed between the first clamp bar 452 and the second clamp bar 454 of the clamp device 44. '

Next, the air cylinder 458 of the clamp device 440 is actuated to force the second clamp bar 454 to the closed position, and the first clamp bar 452 and the second clamp bar 454 are connected to each other. Insert the end of film 16 between them. Then, the steering motor 448 of the drive device 426 operates to move the first base plate 438, the clamp device 440, the second base plate 444, etc., to the left in FIG. 32. Let me move.

Then, at the position corresponding to the length of the article to be packaged, move the second clamp bar 454 of the clamp device 440 to the open position, and operate the air cylinder 442. Then, the connection between the second base plate 4 4 4 and the first base plate 4 3 8 is released. The second base plate 4 4 4 is held at the position where the connection is released, and the first base plate 4 3 8 is obstructed by the stepping motor 4 4 8 It can be moved to the left in Fig. 32 until there is no position.

Next, the air cylinder 4 62 of the corner presser 4 4 6 is operated, the presser 4 6 4 is lowered, and the presser 4 6 4 and the conveyor belt 4 6 5 of the second unloading conveyor 3 4 1 are connected. Press the corner of the end of film 16 between them.

Then, the vertical sealer / cutter 330 operates to perform sealing and cutting in the vertical direction.

Next, the air cylinder 362 of the seal / loading device 322 is operated, and the support frame 360 and the horizontal sealer / cutting device 3229 supported by the support frame 360 are moved to the third frame. Move to the left in the figure. Then, the inside of the film is exhausted by the deaeration nozzle 100, and the film is sealed and cut so as to intersect with the portion sealed by the vertical sealer / cutter 330. The operation relationship between the deaeration nozzle 100 and the sealing / cutting device 32 2 is the same as in the first embodiment.

Next, the formed package is unloaded by the first and second unloading conveyors 34 0 and 34 1.

Then, the air cylinder 362 of the sealing / cutting device 322 is actuated, and the support frame 360 and the horizontal sealer cutout 329 supported by the support frame 360 are moved as shown in FIG. Move rightward to the rightmost position shown in Fig. 34.

Claims

The scope of the claims

1. A feeding device for feeding a single-layer film in a first movement direction, and one side portion of the single-layer film is folded in a mountain fold with respect to a sealing surface to advance in a second movement direction. A first reversing part,

A third reversing in which the other side edge portion reversed by the second reversing portion is further reversed in a mountain fold with respect to the sealing surface, and substantially advances in the second moving direction. Part and

The first reversing part and the third reversing part are separated from each other when viewed in the second movement direction, and substantially when viewed in a direction perpendicular to the second movement: direction. A V-shape is formed, whereby an insertion opening for inserting an article between the folded films is formed in the film. Film former.

2. The first reversing portion is defined by a side edge of a bottom portion of a reversing member formed by bending a substantially triangular plate into a U-shape,

The first inversion portion is defined by an outer surface of a side portion of the inversion member, and the third inversion portion is defined by a side edge of an upper surface of the inversion member. The described film former.

3. The first reversing portion is defined by a first side edge of the trapezoidal plate of the reversing member including a substantially trapezoidal plate, a substantially triangular plate, and a column connecting them. And

The second reversing portion is defined by a second side edge of the trapezoidal plate of the reversing member and a first side edge of the substantially triangular plate;

2. The film former according to claim 1, wherein the third reversing portion is defined from a second side edge of the substantially triangular plate.

4. A film feeder that supplies the film, a film former that forms a folded film, a carry-in conveyor that carries the packaged material between the folded films, and a packaged material that is folded in two. And a sealing and cutting device that forms a package and separates from other portions of the film to form a package, and a film transport device that transports the film. ,

A vacuum source, a deaeration nozzle, a tube for connecting the vacuum source and the deaeration nozzle, and the deaeration nozzle is folded in two with an inner surface of a folded portion of the folded film. A drive device for moving between a position on the inner side of the film to be packaged between the films and a position on the outer side of the folded film is provided. Packaging equipment.

5. The packaging device according to claim 4, wherein the drive device moves the deaeration nozzle in a direction parallel to a direction in which the package to be packaged by the carry-in conveyor is loaded into the folded film.

6. The seal cutting device seals and cuts the rear end of the package and the front end of the next package, and the vertical sealer cuts and seals the side edges of the package. 6. The packaging device according to claim 4, comprising:

7. Providing a sealer and a sealer cradle arranged to be in contact with and separated from each other; The sealer comprises two heating elements,

A concave portion is provided between the heating elements of the streaks, and the sealer and the sealer pedestal are in contact with each other, and the heating elements of the streaks are sandwiched between two folded films. A seal and a cutting device characterized in that, when coming into contact with a pressing member, the one cutting blade is located in a concave portion between the two heating elements.

8. The seal and cutting device according to claim 7, wherein the heating element is a heating element that is heated by an impulse current.

9. The sealer includes a cover film that covers the heating element, and the heating element and the pressing member are folded into two with the cover film when the sealer and the sealer cradle are in contact with each other. 9. The seal and cutting device according to claim 7, wherein the seal and the cut device are in contact with each other with the film interposed therebetween.

10. The seal and cut device according to claim 9, wherein the cover film is made of a polyimide resin film coated with Teflon on a surface that comes into contact with the folded film. '

1 1. A film supply device that supplies the film, a film former that forms a folded film, a carry-in conveyor that carries the packaged material between the folded films, and 2 The seal is sandwiched between the folded films, separated from the rest of the film to form a package, a seal-cutting device, a film transport device for transporting the film, and the package. In a packaging apparatus provided with an unloading conveyor for unloading, the seal-cutting device seals and separates the film in a direction in which the film is transported; And a sealer for moving the vertical sealer and the output conveyor in a direction perpendicular to the direction in which the film is transported. A packaging device comprising:

1 2. The film transfer device comprises: a clamp device for gripping an end face of the folded film cut by the horizontal sealer and a cutting device; and a driving means for driving the clamp device in a film transfer direction. The packaging device according to claim 11, comprising:

1 3. In a package transporting device that transports packages to be packaged, comprising two conveyors with conveyor belts arranged in series in the transport direction, one of the conveyors has a radius of curvature of 1 at the end of the connecting portion. A knife edge conveyor that is

The other conveyor is an expansion / contraction conveyor with a transferable part that can expand and contract, and the conveyor belts of both conveyors have a surface resistance of ^^ (^ ~ ^{1 11} QZ cm ²

A package transporting device for transporting packages to be packaged.

1 4. The knife edge conveyor includes a driving roller, a conveyor table, a guide opening, and a conveyor belt supported by the rollers, and one end of the conveyor table is connected to a connecting portion. The package transporting device according to claim 13, wherein the package transporting device is formed.