JPS59169840A - Device for manufacturing gusset bag body with chuck - Google Patents

Abstract

(57) [Summary] This bulletin contains application data before electronic filing, so abstract data is not recorded.

Description

DETAILED DESCRIPTION OF THE INVENTION The present invention relates to an apparatus for manufacturing a bag having a zipper at the opening and a gusset at the bottom.

A bag made of synthetic resin film has a gusset formed at the bottom, and when the contents are filled, the bottom expands from side to side, making the gusset the bottom surface and allowing the bag to stand upright. The body is not equipped with a zipper at the opening.

To manufacture a general gusset bag that is not equipped with the above-mentioned zipper, the film is unwound vertically downward and upward from a pair of upper and lower bobbins, and the bottom tape is made into a gusset with punched holes in the required locations. It is inserted horizontally in the same direction as the running of the film between the pair of upper and lower films, and is formed into a bag by welding the film and the bottom tape and by forming the side seal into a bag.

With such conventional manufacturing equipment, it is not possible to manufacture a gusset bag using a raw film with a zipper. The reason for this is that the original film with a chuck is folded in half with the chuck engaged and wound onto a bobbin. Therefore, the upper and lower films are stacked, and in order to insert the bottom tape of the gazette into the bottom part, it is necessary to open the upper and lower films of the bottom part, and the related mechanism is required. . In addition, since it has a chuck, the dimensions of the chuck shrink over time, resulting in wrinkles in the original film, or when supplying a raw film with an uncertain shape such as a curved shape. This results in a drop in quality, so a mechanism to prevent this is also required.

In view of the above-mentioned problems, the present invention provides a manufacturing apparatus that continuously produces zippered gusset bags of good quality and stable quality without variation.

Embodiments of the present invention will be described below based on the drawings.

The apparatus of the present invention is roughly divided into a raw fabric supply section A, a dance roll section B, a bottom tape supply section C, and a bag making section.

The original fabric supply section A has the following configuration. Reference numeral 1 denotes a bobbin, on which the original film 3 with a chuck is folded in half with the chuck 2 engaged and wound up. A feed roll 4 continuously loosens the raw film 3 from the bobbin 1 and applies running tension, and is rotationally driven by a variable speed motor 5. 6 is a heater that heats the raw film 3 that is unraveled from the bobbin 1 and runs; 7 is a heater that heats the raw film 3 that is loosened from the bobbin 1 and runs;
is the end position control.

In the dance roll section B, a plurality of rolls 8 are arranged in a vertical zigzag manner so that the raw film 3 that has come out of the raw film supply section A is meandered in the vertical direction. Further, a so-called large cutter device 9 is installed for cutting the folds of the original film 3 folded in half when it exits the dance roll section B.

The bottom tape supply section C has the following configuration. The upper film 3 of the original film 3 opened to the top by the cutter device 9
A pair of upper and lower guide rolls 10 convert the running direction of α into a vertical upper blade and the lower film 3h vertically downward to separate and release the chuck 2, and the upper film 3α and the lower film 3b are moved horizontally. A pair of upper and lower unfolding rolls 11α, 11h that convert the running in the horizontal direction, and a pair of upper and lower guide rolls 12α that convert the running of the upper film 3a, which is transported in the horizontal direction, to vertically downward and the lower film 3h to vertically upward.
, 1〉 and the guide rolls 1.21Z, 12h combine the upper and lower films 3α, 3b again, and the transfer speed of the films 3α, 3h is determined by the intermittent movement in the bag making section which will be described later. It is equipped with an auxiliary feed roll 13 driven by a synchronized variable speed motor 14 and a claw hooking device 19 that re-engages the chucks 2 of the opposed upper and lower films 3a and 3b. , a folding plate 17 is continuously supplied from the side in a direction perpendicular to the running direction of the films 3α, 3h into the space of the horizontal running portion of the lower films 3α, 3b, and is installed in the space.
The film 3 is folded in half by the guide roller 18.
A punching device 14 is provided which can punch holes 16 at required intervals in the bottom tube 15 (gusset band) to be inserted between the pair of upper and lower films 3α and 3b by changing the feeding direction to the same direction as α and 3h. is set up.

Furthermore, in the bag making section, the films 3a, 3b and the bottom tape 1
5 and a bottom welding device, a chuck elution par 21 for melting the chuck 2 in the area to be side sealed and crushing the thickness of the chuck, a side seal bar 22, a cooling bar B, and a bottom tape 15. Films 3α and 3h on the welded side
A slitter is used to cut the ends of the material to make them even.
It is composed of a draw roll 5 and a cutter 26 that cuts the side seal portion to form a bag body of a predetermined width.

γ is a conveyor for conveying the cut bags.

Since the present invention has the above-mentioned configuration, in the raw film supply section A, the raw film 3 running at a constant speed with the feed roll 4 engaged with the chuck to be loosened than the bobbin 1 is moved by the heater 6. It is heated to become a flexible state, and a running tension is applied to stretch and straighten the wrinkles in the original film 3 and the curvature of the chuck 2, and then the film is supplied to part B for the next process. This meandering movement of the raw film 3 in the dance roll section B generates a running speed difference that converts the continuous running motion of the raw film 3 toward the raw fabric supply section into intermittent motion in the bottom tape supply section and the bag making section. Buffer.

In the bottom tape supply section C, the original film 3 which has been top-opened by the cutter device 9 after exiting the dance roll section B is vertically separated into two upper and lower films by a guide roll 10 and developing rolls 11α and 11h. to release the chuck 2 and guide rolls 12α, 12/l.
The upper and lower films 3α and 3b separated by the auxiliary feed roll 13 are reunited and brought together. f.Furthermore, it is supplied from the side by a punching device 14 installed in a space between the upper and lower films 3a and 3h, which are separated and run horizontally, and merges between the pair of upper and lower films 3α and 3h. Punch holes at required intervals in the bottom tape 15 to be inserted]
Drill 6. Then, after the bottom chevron 15 is inserted between the upper and lower films 3α and 3b, the chuck 2, which had been disengaged, is engaged again by the claw hooking device 9, and the bag is made ready to be made, and the process moves to the bag making section. be.

7- In the bag making section, the films 3a and 3h are welded to the bottom tape 15 using a bottom welding device as is conventionally known, the chuck 2 is melt-pressed at predetermined intervals by the chuck elution bar 21, and the side seal bar n Side-seal the films 3α and 3h in a direction perpendicular to the running direction, and then use a slitter to align the bottom edges (cut, cut the side-sealed part with a part of the cutter, and make bags of a predetermined width). It is then conveyed onto a conveyor n by a draw roll 5.

According to the apparatus of the present invention, in the raw film supply section, the running raw film is heated by a heater and stretched by applying running tension, so that there are wrinkles due to shrinkage and curvature of the chuck part, which is characteristic of raw film with a chuck. is corrected and supplied to the next process. In addition, the dance roll section buffers (absorbs) the difference in running speed caused by the continuous running of the original film in the original film supply section and the intermittent running of the original film in the bottom tape supply section and the bag making section. Enables a series of tape supply and bag making processes.

8-Furthermore, in the bottom tape supply section, the two upper and lower films opened at the top are separated in the vertical direction, the engaging chuck is released, and the separated films are separated from the upper and lower positions and run horizontally. By installing a punching device for the bottom tape in that space, it is possible to insert the bottom tape between the upper and lower films that meet and meet without the need for a special machine (by punching holes in the bottom tape). , the bottom tape can be easily inserted.Furthermore, after the separated upper and lower films are merged and matched and the bottom tape is inserted, they are engaged again with a chuck hooking device and transferred to the bag making section. Bag making is carried out with the zipper engaged.Therefore, it is possible to continuously produce zippered gusseted bags, which could not be obtained with conventional equipment, and to provide stable and high quality zippered gusseted bags. This has the effect of making it possible.

[Brief explanation of drawings]

The drawing is a perspective view of the device of the present invention. 8-tsubo・i anti-supply i, B-・dance roll club, C・・
・Bottom tape supply section, D...Bag making section, 1st stitch ・Bobbin, 2
・0. Chuck, 3rd. Original film, 3α... Upper film, 3h...
Lower film, 4--Feed roll, 6--Heater, 8--Dance roll, 9--Cutter device,
10III・Guide roll, 1. 11b11-@Development roll, 12α, 12b1111・
Guide roll, 1.3"・φm assistance') roll, 14・
... Punching device, 15... Bottom tape, 19. Life.
Claw hooking device, processing... ψ bottom welding device, quality... chuck elution bar, Z2 II 11 IT side seal bar, 26
11 m @ cutter. 11-

Claims (1)

[Claims] 2. Hold the original film with chuck with the chuck engaged.
The raw film is continuously removed from the bobbin that is folded and rolled up by a feed roll, and then the film is run.
During this running process, the raw film is heated by a heating means,
A film supply section that applies continuous running tension to the film in a flexible state, a dance roll section that makes the film run in a meandering manner, and a cutter device that cuts the folded part of the upper part of the chuck of the film that comes out of the dance roll section. A pair of upper and lower guide rolls separates the cut upper and lower films by converting the running direction vertically upward and downward to release the chuck, and a pair of upper and lower guide rolls move the upper and lower separated films horizontally. A pair of upper and lower unfolding rolls that convert the running in the force direction, a guide roll that converts the upper and lower films running in the horizontal force direction to approximately vertical lower blades and upwards, and the upper and lower films that merge by this guide roll are paired again. A punching device is arranged in the space between a pair of upper and lower auxiliary feed rolls to be brought together and the developed upper and lower films, and the long gusset band that is intermittently transferred by this punching device is punched with holes at required intervals to separate the upper and lower films. Insert between pairs of films
A bottom tape supply unit, a claw hooking device that re-engages the upper and lower film chucks into which the bottom tape has been inserted, and a cutter that welds the film and bottom tape after the chuck is engaged, side-seals them at predetermined intervals, and a cutter. A device for manufacturing gusset bags with a zipper, which is comprised of a bag making section that cuts the bags at the machine.