JP2015129011A - Manufacturing device for multilayer film bag product - Google Patents

Abstract

PROBLEM TO BE SOLVED: To provide a manufacturing device for a multilayer film bag product capable of removing defects and performing a connection operation automatically.SOLUTION: When a defect mark 19 indicating a defect portion is detected by a defect mark detection sensor 23, a removal and welding of a perforation defect portion is automatically performed. When a defect mark 19 indicating a defect portion is detected by a defect mark detection sensor 23, a film is transferred such that a bag having a defect portion comes to a position (between a defect portion cut position 28 and a downstream defect portion cut position 29) where a defect portion is automatically removed. At this position, a film area corresponding to one bag (defect removal portion) 59 where a defect portion 18 exists is removed and after that the film is welded by welding means.

Description

  The present invention relates to an apparatus for automatically removing and joining defective portions generated in a manufacturing process of a multilayer film bag product.

  For example, in a web-like packaging material for making a soft packaging bag, the web-like packaging material is inspected for defects such as dirt and foreign matter by printing, laminating, etc., and the defective portion is cut and removed. As a single wound product, for example, it is made into a product after processing into a packaging bag by an automatic filling machine in the next process and processing such as filling food into the bag.

  A general packaging bag is manufactured into a packaging bag using a printed film, and an outer shape is removed, and various packaging bags are manufactured according to the function and type of the bag. A back-in box is shown in FIG. 1 as an example of a packaging bag. The back-in-box combines the inner layer films 7 and 8 and the outer layer films 6 and 9, the overlapped portion 3 is fixed by heat sealing (thermal welding), the contents 100 are filled from the spout 2, and the cap Do one. Since the back-in box is mainly a business bag, the outer layer film 9 is not printed and is packed in a box after filling.

  2A and 2B are diagrams showing a manufacturing process of the back-in box, FIG. 2A is a top view, and FIG. 2B is a side view. As shown in FIG. 2, the outer layer upper film 6 and the inner layer upper film 7, and the outer layer lower film 9 and the inner layer lower film 8 are overlapped, and the outer layer upper film 6 and the inner layer upper film 7 are formed by the spout punching punch unit 10. A hole called “Spout 2” is passed from below, and the flange portion is further thermally welded. After the four layers of films are stacked, the four sides are thermally welded by the horizontal seal unit 13 and the vertical seal unit 14. . After that, the perforation unit 15 is put in the perforation unit 15 so that it can be cut after being filled, and is packed in the box 16 in a continuous product state without cutting every bag. Reference numeral 11 denotes a guide roll, and reference numeral 12 denotes a nip roll for pitch-feeding and conveying in accordance with the product pitch.

  Usually, in the back-in-box manufacturing process, a defect inspection machine is installed, and the detected defective part is removed and both ends of the removed part are succeeded in a subsequent process. A method for removing and joining the defective portion is shown in FIG. A continuous product that is not cut for each bag is taken off from the box 16 (see FIG. 2) offline after packing up to the defect position mark 19 attached to the part where the defective part 18 is detected by the defect inspection machine (FIG. 3A). ), The defective portion is removed by the perforation 17 (FIG. 3B), the front end portion and the rear end portion of the removal portion are abutted, and the adhesive tape 20 is adhered and bonded (FIG. 3). 3 (c)). Reference numeral 2 denotes a spout.

Japanese Patent No. 3904675 Japanese Patent No. 4316053

  Since the removal of defective parts that occur in the conventional back-in-box manufacturing process is done manually by offline work, it is not possible to sufficiently detect and deal with defects during production, and the removal and joining work of defective parts is done manually. As a result, work efficiency has not been improved.

  Therefore, an object of the present invention is to provide a bag manufacturing apparatus that can automatically perform removal failure and joining work.

Therefore, the invention described in claim 1 of the present invention is
An apparatus for producing a multilayer film bag product,
The manufacturing apparatus includes a heat welding part, a perforation unit, a defect mark detection sensor, a defective part automatic removal means, and a joining means in the film conveying direction. The heat welding part is a multi-layer film laminated. Which is to be welded
The perforation unit is for inserting perforations for separating the continuous bag of heat-welded bags into individual bags,
The defect mark detection sensor detects the defect mark provided in the defective part.
The defective portion automatic removing means is for removing the bag in which the defective portion exists,
The joining means joins the front and rear parts of the removed bag,
An apparatus for producing a multi-layer film bag product, comprising:

The invention according to claim 2 of the present invention is
The defective portion automatic removal means includes a perforation detection unit that detects the perforation, and automatically detects a defective portion of a bag having a defective portion detected by the defect mark detection sensor by detecting the perforation. The apparatus for producing a multilayer film bag product according to claim 1, further comprising a mechanism that moves to a position, and removing a defective portion along the perforation.

The invention according to claim 3 of the present invention is
3. The multilayer film bag product according to claim 1, wherein after the defective portion is removed, the joining means abuts the portions before and after the removal, and is bonded with an adhesive tape to form a continuous body. Device.

  According to the apparatus for manufacturing a multilayer film bag product according to claim 1 of the present invention, a perforation for separating the continuous body of the bags on which the film is laminated by the heat welding portion into individual bags is inserted, and further a defect inspection is performed. A defective mark is applied to the defective portion detected by the portion, the defective mark is detected by a defective mark detection sensor, the defective portion is removed by a defective portion automatic removing means, and the parts before and after the removed defective portion are joined By joining by means, it is possible to obtain a continuous bag having no defective portion.

  According to the apparatus for manufacturing a multilayer film bag product according to claim 2, the defective part automatic removing means automatically detects the defective part by detecting a perforation provided in the perforation unit. The region where the defective portion exists can be surely removed at the position of the perforation.

  According to the apparatus for producing a multilayered film bag product according to claim 3, the joining means continuously joins the parts before and after the removal after the defective part is removed, and bonds the joined part with an adhesive tape. It can be a body.

Explanatory drawing of a back-in box. The figure which shows the manufacturing process of a back in box. Explanatory drawing of the defect removal joining method. The figure which shows a back in box as an example of the multilayer film bag-made goods manufactured with the manufacturing apparatus of the multilayer film bag-made goods of this invention. The figure which shows the bag making goods manufacturing apparatus of this invention. The figure ((a)-(c)) explaining the defect automatic removal and joining operation | movement which concern on this invention. The figure ((d)-(f)) explaining the defect automatic removal and joining operation | movement which concern on this invention. The figure which shows the method of affixing on the part which faced the adhesive tape which concerns on this invention. The figure which shows the method different from FIG. 8 stuck on the part which faced the adhesive tape which concerns on this invention.

  The present invention will be described below with reference to the drawings.

  FIG. 4 is a view showing a back-in box as an example of the multilayer film bag-made product manufactured by the multilayer film bag-made product manufacturing apparatus of the present invention. The back-in box is a multilayer in which the outer layer upper film 46 and the inner layer upper film 47, and the portion 3a where the outer layer lower film 49 and the inner layer lower film 48 are overlapped are heat-sealed (heat-welded) and the spout 2 (spout) is heat-welded. A film bag product, which is filled with the contents 100 and then placed in an outer box such as cardboard.

  FIG. 5 shows an apparatus for manufacturing a bag product according to the present invention. FIG. 5A is a top view showing an upstream portion of the bag manufacturing apparatus, FIG. 5B is a side view, and FIG. 5C is a top view showing a downstream section of the bag manufacturing apparatus. 5 (d) shows a side view of FIG. 5 (c).

  In the bag manufacturing product manufacturing apparatus of the present invention shown in FIG. 5, an insertion hole for the spout 2 is formed in the inner layer upper film 47 and the outer layer upper film 46 by a spout (plug) hole punch 50. The spout 2 is inserted into the vacant hole and the spout is fixed by heat welding. The inner lower layer film 48, the outer lower layer film 49, the inner upper layer film 47, and the outer upper layer film 46 are combined, and the horizontal heat seal bar 53 and the vertical heat seal bar are combined. At 54, a four-layer film is thermally welded into a bag shape. The four films are fed and conveyed by the guide roll 51 and the nip roll 52 in accordance with the product pitch. Further, a perforation unit 57 is inserted by the perforation unit 55 so that the continuous bag can be separated into individual bags, and a bag film 58 (hereinafter, film 58) is packed in the box 56.

  Here, the film 58 is once packed in the box 56 and then supplied to the downstream part of the bag manufacturing product manufacturing apparatus shown in FIG. 5C. You may supply to the downstream part of a manufacturing apparatus.

  A method for automatically removing a defective portion by the defective portion automatic removing means will be described. In FIG. 5C, when the defect mark 19 indicating the defect site is detected by the defect mark detection sensor 23, the perforation defect site is automatically removed and joined. When the defective mark 19 is detected by the defective mark detection sensor 23, the defective portion automatic removing means includes a mechanism that moves the bag containing the defective portion detected by the defective mark detection sensor to a position where the defective portion is automatically removed. . That is, the film is conveyed so that the bag in which the defect mark 19 exists is positioned between the upstream defective portion cut position 28 and the downstream defective portion cut position 29. In this case, the perforation 57 is captured by the perforation imaging image sensor 26, and when a predetermined number of perforations are detected, the conveyance is stopped and the defect mark 19 is located between the upstream defective portion cut position 28 and the downstream defective portion cut position 29. To come to. The predetermined number is determined in advance by the distance between the defect mark detection sensor 23 and the place where the defect is removed and the pitch dimension of the bag of the film 58. In this way, after the defective mark 19 is conveyed between the upstream defective portion cut position 28 and the downstream defective portion cut position 29, the defective portion is fixed with the film 58 fixed by the movable clamp 25 and the downstream fixed clamp 30. One bag (defect removal site) 59 in which 18 exists is removed. Reference numeral 27 denotes a meandering correction edge sensor, which can prevent film meandering.

  After removing the defective removal part 59, it joins by a joining means. A method of joining will be described. After removing one bag of the defective removal portion 59 where the defective portion 18 is present as described above, the movable clamp 25 is moved to the downstream side of the adhesive tape application position 29 while holding the film 58 with the movable clamp 25. After moving in the direction indicated by the arrow 25a and abutting the front end and the rear end at the adhesive tape application position 29, the adhesive tape lower base 33 is raised, and the adhesive tape 20 is attached by the rotary adhesive tape upper base 32 to Fix the rear end.

  The automatic defect removal and bonding operation will be described with reference to FIGS.

  The defect removal portion 59 is moved to the removal position 61, and the film 58 is gripped by the movable clamp 25 and the downstream side fixed clamp 30 (FIG. 6A).

  The upstream film cutting lower base 41-1 and the downstream film cutting lower base 41-2 are raised and the upstream film presser upper base 43-1 and the downstream film presser upper base 43-2 are lowered to fix the film 58, and the upstream film The cutting plate 42-1 and the downstream film cutting plate 42-2 are lowered to remove the defective removal portion 59 including the defective portion 18 (FIG. 6B).

  After removing the defect removal portion 58, the upstream film cutting lower base 41-1 and the downstream film cutting lower base 41-2 are lowered, and the upstream film press upper base 43-1, the downstream film press upper base 43-2, and the upstream side The film cutting plate 42-1 and the downstream film cutting plate 42-2 are raised (FIG. 6C).

  The movable clamp 25 is moved to the adhesive tape application position in the direction of the arrow 25a, and the downstream side film cutting lower base 41-2, the downstream side film pressing upper base 43-2, and the downstream side film cutting plate 42-2 are indicated by the downstream arrow 41a. (Fig. 7 (d)).

  Further, the lower base 33 of the adhesive tape is raised in the direction indicated by the arrow 33a so that the leading edge and the trailing edge of the film are abutted, and then the adhesive tape (not shown) is attached to the abutted portion. Thereafter, the adhesive tape upper base 32 is lowered in the direction indicated by the arrow 32a, and the adhesive tape surface is pressed to fix the adhesive tape (FIG. 7E).

  The movable clamp 25 returns to the direction indicated by the arrow 25b after releasing the grip. The adhesive tape upper base 32 is raised in the direction of arrow 32b, and the adhesive tape lower base 33 is lowered in the direction of arrow 33b. Further, the gripping by the downstream side fixing clamp 30 is released, and the downstream side film cutting lower base 41-2, the downstream side film cutting plate 42-2, and the downstream side film cutting presser upper base 43-2 are returned to their original positions (FIG. 7 (f )).

  FIG. 8 shows a method of attaching the adhesive tape to the abutted portion. The tip of the adhesive tape 20 is directly attached to the films 58a and 58b to be bonded, the tape is fixed with the adhesive press roll 31 (FIG. 8A), the adhesive tape 20 is unwound to a specified length, and then the adhesive Cut with the tape cut 36 (FIG. 8B).

  Further, FIG. 9 shows a method different from that shown in FIG. After the adhesive tape 20 is cut and pasted to the rotary adhesive tape upper base 32 by the adhesive tape cut 36 to the specified length, the rotary adhesive tape upper base 32 is rotated in the direction indicated by the arrow 37 (FIG. 9A), Adhesive tape 20 is affixed to the film (FIG. 9B). In this case, the surface of the pressure-sensitive adhesive tape that is not the pressure-sensitive adhesive surface is adsorbed and fixed by the rotary pressure-sensitive adhesive tape upper base 32, and after adhering to the abutted portion, the pressure-sensitive adhesive tape is released from being adsorbed and fixed.

  In the above description, the case of four layers is exemplified as the multilayer film, but the present invention is not limited to this, and the present invention can be applied to multilayer films of 6, 8, or more layers.

  As described above, according to the bag manufacturing product manufacturing apparatus of the present invention, it is possible to automatically perform the removal of the defective portion and the subsequent joining operation, thereby improving work efficiency and further preventing the defective portion from being overlooked. Because it can, it can play a role of quality assurance.

1 ... Cap 2 ... Spout
3, 3a: Heat-sealed (heat-sealed) overlapped portion 6: outer layer upper film 7 ... inner layer upper film 8 ... inner layer lower film 9 ... outer layer lower film 10 ... Spout (plug) hole punching unit 11 ... guide roll 12 ... nip roll 13 ... horizontal heat seal unit 14 ... vertical heat seal unit 15 ... perforation unit 16 ... box 17 .... Perforation 18 ... Defective part 19 ... Defective mark 20 ... Adhesive tape 21 ... Upstream nip roll 22 ... Downstream nip roll 23 ... Defective mark detection sensor 24 ... Upstream Fixed clamp 25... Movable clamp 26... Image sensor 27 for perforation imaging... Meandering edge sensor 28. Side defective part cut position + adhesive tape application position 30 ... downstream side fixed clamp 31 ... adhesive tape presser roll 32 ... rotary adhesive tape upper base 33 ... adhesive tape lower base 34 ... meandering correction base 35 ... Meandering correction guide 36 ... Adhesive tape cut 41-1 ... Upstream film cutting base 41-2 ... Downstream film cutting base 42-1 ... Upstream film cutting plate 42-2・ ・ Downstream side film cutting plate 43-1 ... Upstream side film presser base 43-2 ... Downstream side film presser base 46 ... Outer layer upper film 47 ... Inner layer upper film 48 ... Inner layer lower film 49 ... Outer layer lower film 50 ... Spout (plug) drilling punch 51 ... Guide roll 52 ... Nip roll 53 ... Horizontal heat seal bar 54 ... Vertical heat seal Ruber 55 ... perforation unit 56 ... box 57 ... perforations 58 ... bag film (film)
59 ... 1 bag (defect removal site)
61 ... removal position 100 ... contents

Claims (3)

An apparatus for producing a multilayer film bag product,
The manufacturing apparatus includes a heat welding part, a perforation unit, a defect mark detection sensor, a defective part automatic removal means, and a joining means in the film conveying direction. The heat welding part is a multi-layer film laminated. Which is to be welded
The perforation unit is for inserting perforations for separating the continuous bag of heat-welded bags into individual bags,
The defect mark detection sensor detects the defect mark provided in the defective part.
The defective portion automatic removing means is for removing the bag in which the defective portion exists,
The joining means joins the front and rear parts of the removed bag,
An apparatus for producing a multi-layer film bag product, comprising:   The defective portion automatic removal means includes a perforation detection unit that detects the perforation, and automatically detects a defective portion of a bag having a defective portion detected by the defect mark detection sensor by detecting the perforation. The apparatus for producing a multilayer film bag product according to claim 1, further comprising a mechanism that moves to a position, and removing a defective portion along the perforation.   3. The multilayer film bag product according to claim 1, wherein after the defective portion is removed, the joining means abuts the portions before and after the removal, and is bonded with an adhesive tape to form a continuous body. apparatus.