JP6894210B2 - Zipper pasting device and zipper end forming device - Google Patents

Description

The present invention relates to a zipper sticking device and a zipper end forming device for sticking a zipper formed by cutting a zipper tape to a predetermined length to a film.

Conventionally, a bag with a zipper that can be opened and closed and having a zipper having a linear fitting convex portion and a fitting concave portion that are detachably fitted has been used as a bag for sealing and storing contents such as food. .. In this type of bag with a zipper, for example, the zipper is attached in the process of film making by the zipper attaching device of the bag manufacturing apparatus with a zipper described in Patent Document 1.

The zipper sticking device provided in this zippered bag manufacturing device grips the zipper tape from the zipper reel with one gripping member and feeds it out, and cuts the zipper tape to a predetermined length according to the film width to form an end portion of the zipper piece. The fitting convex portion and the fitting concave portion that are in the fitted state at the above positions are crushed and welded by the zipper end crushing means. Then, after cutting the zipper tape into zipper pieces having a predetermined length with a cutter, the zipper pieces are further moved to the film sticking position by the above-mentioned gripping member and welded.

In the above-mentioned zipper attaching device, when crushing the zipper end of the zipper piece, the distance from the zipper end crushing means to the tension roller that applies tension to the zipper tape on the downstream side is shorter than the length of the zipper piece, and is rearward. When the zipper end is crushed, an inner ring difference is generated between the convex tape having the fitting convex portion and the concave tape having the fitting concave portion. Therefore, distortion occurs due to a slight dimensional difference between the convex tape and the concave tape between the zipper ends on both sides that have been crushed, and depending on the type of zipper tape, the fitting convex portion and the fitting concave portion may be disengaged. there were.

Further, when the fitting convex portion and the fitting concave portion in which the convex tape and the concave tape are fitted are crushed and welded by the zipper end crushing means, welding residue or the like may be rarely generated. At that time, it was necessary to monitor the welding residue so that it would not adhere to the bag with a zipper or get mixed in the bag.

Japanese Unexamined Patent Publication No. 2008-179035

By the way, in the zipper sticking device disclosed in Patent Document 1 described above, the feeding for cutting the zipper into a zipper piece having a predetermined length and the movement of the zipper piece to the film sticking position are continuously performed by one gripping member. Therefore, it was not possible to speed up the feeding of the zipper tape and the transfer of the cut zipper piece to the sticking position. Therefore, the film bag-making work must be performed at a relatively low speed in accordance with the speed of the zipper piece sticking work, and the bag-making work cannot be performed efficiently.

The present invention has been made in view of the above circumstances, and an object of the present invention is to provide a zipper sticking device capable of transporting a cut zipper from feeding a zipper tape to a sticking position of a cut zipper at high speed.

The zipper sticking device according to the present invention is a zipper sticking device for sticking a zipper of a predetermined length to a film, and has a delivery position having a zipper reel for feeding out the zipper tape and a cutting position for cutting the drawn zipper tape. A feeding member for moving the zipper tape to a predetermined length at the cutting position, a transport member for delivering the zipper from the feeding member at the delivery position and moving the zipper tape to a position where the film is attached to the film, and the above. It is characterized by including a guide member for guiding the delivery and movement of the zipper between the feeding member and the transporting member, and a control means for controlling the movement of the feeding member and the transporting member, respectively.
According to the present invention, the zipper tape can be fed to the delivery position by the feeding member, and the zipper obtained by cutting the zipper tape to a predetermined length can be delivered from the feeding member to the transport member and transported to the film attachment position. Since the feeding member can be moved to grip the zipper tape during the feeding of the zipper, the feeding of the zipper tape and the feeding of the cut zipper to the sticking position can be performed at high speed.

Further, a film sensor for detecting the position of the film in the width direction may be further provided, and the position of the zipper attached by the transport member may be adjusted based on the position of the film detected by the sensor by the control means.
Even if meandering occurs in the film to be conveyed, it can be detected by the film sensor, and the movement of the conveying member to the attachment position of the zipper can be adjusted by the control means based on the position of the film.

The zipper end forming apparatus according to the present invention includes a zipper end crushing means for crushing and welding a position of a zipper having a predetermined length in the unwound zipper tape, and a zipper end crushing method in the feeding direction of the zipper tape. It is characterized in that it is provided with a downstream roller provided at a position separated by a zipper length or more on the downstream side of the means.
When the rear end of the zipper tape having a predetermined length in the feeding direction is crushed and welded by the zipper end crushing means, the zipper portion is positioned in a plane between the zipper end crushing means and the downstream roller. Therefore, the zipper end can be crushed and welded with high accuracy. Therefore, it is possible to prevent the tip end portion of the zipper from being wound around the downstream roller to cause an inner ring difference and the fitting portion to come off.

The zipper end forming apparatus according to the present invention is crushed by a zipper end crushing means for crushing and welding a position of a zipper of a predetermined length in a drawn zipper tape and a zipper end crushing means. It is characterized by including a zipper cleaner in which an air outlet is installed at a position facing the fitting convex portion and the fitting concave portion of the zipper tape.
Even if welding debris is generated in the fitting convex portion and the fitting concave portion of the zipper tape crushed by the zipper end crushing means, it can be blown off by the air blown from the air outlet of the zipper cleaner.

According to the zipper piece sticking device of the present invention, since the feeding member and the transporting member can be individually moved and controlled, the feeding member can be moved to the feeding start position of the zipper tape during the zipper transporting by the transporting member. You can move and paste the zipper at high speed.

It is a schematic block diagram of the manufacturing apparatus of the bag with a zipper according to 1st Embodiment of this invention. It is an enlarged view of the main part of the zipper sticking apparatus shown in FIG. (A) is a front view of the zipper piece, (b) is a sectional view taken along line AA of the same figure (a), and (c) is a front view of a main part of the tip portion of the zipper tape. It is explanatory drawing of the zipper end part forming apparatus which crushes and welds the zipper end part of the zipper tape. It is a main part perspective view which shows the zipper supply device of the zipper sticking device. It is explanatory drawing which shows the zipper piece temporary fixing control system to a film in a zipper sticking apparatus. (A)-(e) is a process diagram which shows the process of transporting and sticking a zipper piece to a film. It is a main part perspective view which shows the welding residue recovery apparatus of the zipper sticking apparatus by the 2nd Embodiment of this invention. It is a front view of the welding residue recovery apparatus shown in FIG. (A) is an explanatory diagram of a state in which the welding debris of the zipper tape is blown off by a zipper cleaner, and (b) is an explanatory diagram of a state in which the welding debris of the zipper tape is blown off by a zipper cleaner according to a modified example.

Hereinafter, a device for manufacturing a bag with a zipper provided with a zipper attaching device and a zipper end forming device according to an embodiment of the present invention will be described with reference to the accompanying drawings.
The zippered bag manufacturing apparatus 1 according to the first embodiment will be described with reference to FIGS. 1 to 7. FIG. 1 shows a schematic configuration of a zippered bag manufacturing apparatus 1 according to the present embodiment. The bag making device 1 with a zipper includes a bag making device 2 and a zipper sticking device 3. The bag making device 1 with a zipper conveys the film f unwound from the film roll F to the zipper sticking device 3 via a tension roller 4 or the like, and temporarily fixes the zipper piece Ja described later to the film f to make a bag. It is conveyed to the bag making tube 6 of the device 2.

The bag-making device 2 is, for example, a vertical bag-making filling machine, in which a bag-making guide 7 is attached to the upper side of the bag-making tube 6, and a hopper 6a for filling the contents in a bag with a zipper is installed above the bag-making guide 7. Has been done. When the film f passes between the outer peripheral surface of the bag making tube 6 and the bag making guide 7, the sheet-shaped film f is bent and formed into a tubular shape along the outer peripheral surface of the bag making tube 6.
In the bag making tube 6, both ends of the tubular film f are vertically sealed with a vertical sealer 8 and intermittently conveyed downward by a feeding belt 9. Below the bag making tube 6, a horizontal sealer 10 having a cutter that seals the bottom of a bag with a zipper (not shown) filled with contents and the upper part of the next bag with a zipper and cuts between them is installed. There is. On the downstream side thereof, a zipper main attachment heater 11 for attaching the temporarily attached zipper piece Ja to the film f is installed.

FIG. 2 is an enlarged view of a main part of the zipper pasting device 3 shown in FIG. In FIG. 2, the film f unwound through the tension roller 4 is tensioned between the fixed roller 12 and the sandwiching roller 13, and the zipper sticking device 3 is installed between them. A heater guide portion 14 having a substantially L-shaped cross section for changing the traveling direction of the film f by a predetermined angle, for example, approximately 90 degrees is installed between the fixed roller 12 and the sandwiching roller 13. Below the heater guide portion 14, a transport member 43, which will be described later, is installed to grip and transport the zipper piece Ja having a predetermined length. The zipper piece Ja can be gripped by the grip claw 51 provided on the transport member 43 and held at a position in contact with or close to the film f on the heater guide portion 14.

Further, a heater pedestal 19 provided on the heater pedestal support portion 18 is installed on one side of sandwiching the film f and the zipper piece Ja with the heater guide portion 14. The zipper piece Ja can be held by the heater pedestal support portion 18 and the holding member 18a provided on the heater guide portion 14. A heater cylinder 20 is installed on the back side of the heater guide portion 14, and a heater head 22 is installed at the tip of a rod 21 provided on the heater cylinder 20 so as to be able to advance and retreat.
Therefore, by operating the heater cylinder 20 to project the heater head 22 and thermocompression bonding the film f and the zipper piece Ja between the film f and the heater cradle 19, the zipper piece Ja can be temporarily fixed to the film f. it can.

Next, the configuration of the zipper piece Ja will be described with reference to FIG.
As shown in FIGS. 3A and 3B, the zipper piece Ja is composed of a male side zipper piece (male side zipper tape) 24 and a female side zipper piece (female side zipper tape) 25. The male side zipper piece 24 is provided with a fitting convex portion 24a extending linearly in the longitudinal direction, and is provided with a flange portion 24b on one side in the width direction of the fitting convex portion 24a. The female side zipper piece 25 is provided with a fitting recess 25a extending linearly in the longitudinal direction, and is provided with flange portions 25b and 25c on both sides in the width direction with the fitting recess 25a interposed therebetween.
The male side zipper piece 24 and the female side zipper piece 25 are welded to the flange portions 24b, the flange portions 25b and 25c, respectively, on the opposite inner surfaces of the bag with the zipper. The zipper piece Ja has a fitting portion 26 in which the fitting convex portion 24a and the fitting concave portion 25a are detachably fitted, and the fitting convex portion 24a and the fitting concave portion are provided at both ends (zipper ends) in the longitudinal direction thereof. It includes a crimped portion 27 in which 25a is compressed in a fitted state, and a crushed portion 28 that is flatter and wider and melt-bonded from the periphery of the crimped portion 27 to both ends. As shown in FIG. 3C, the zipper piece Ja is obtained by cutting the center of two crushed portions 28 on the rear end side of the zipper piece Ja on the front end side of the zipper tape J along the cutting line S.

Next, the zipper forming device 23 in the zipper attaching device 3 will be described with reference to FIGS. 4 to 6. The zipper forming device 23 includes a zipper end forming device 30 and a zipper supply device 31. In the zipper end forming device 30 shown in FIG. 4, the zipper tape J is unwound from a zipper reel (not shown) and conveyed to the tension applying member 32. The zipper tape J is composed of a male side zipper tape 24 and a female side zipper tape 25 in which the fitting convex portion 24a and the fitting concave portion 25a are detachably fitted.

The tension applying member 32 includes a plurality of upper fixed rollers 34a arranged side by side in the lateral direction, a tension lever 34b extending in the lateral direction and rotating vertically with the upstream end as the center of rotation. A plurality of lower swing rollers 34c supported by the tension lever 34b are provided. The zipper tape J unwound from the zipper reel is alternately wound and supported on the upper fixed roller 34a and the lower rocking roller 34c from the upstream side. A spring 34d is attached to the tension lever 34b so as to rotate the tension lever 34b downward to urge the swing roller 34c to swing downward.

As a result, the zipper tape J wound around the rollers 34a and 34c of the tension applying member 32 is pulled downward by the rotation of the tension lever 34b according to the urging force of the spring 34d, and a constant tension is applied.
Further, a tension blocking means 35 is installed on the fixed roller 34a on the most downstream side of the tension applying member 32. The tension blocking means 35 can push the elastic member 35b provided at the tip of the cylinder 35a and press the zipper tape J against the fixing roller 34a to shut off the tension.

The zipper tape J unwound from the tension applying member 32 is changed in direction by the upstream roller 37a and sent to the ultrasonic end crushing device 36. The zipper tape J is linearly conveyed between the upstream roller 37a and the downstream roller 37b arranged side by side in the lateral direction. The ultrasonic end crushing device 36 is installed between the upstream roller 37a and the downstream roller 37b. The ultrasonic end crushing device 36 includes an ultrasonic head 38a and an anvil 38b that are vertically opposed to each other with a zipper tape J wound around and supplied by an upstream roller 37a.
The ultrasonic head 38a that oscillates ultrasonic waves on the zipper tape J is formed in a substantially columnar shape, for example, and the contact surface in contact with the zipper tape J is formed on a flat surface. On the other hand, the anvil 38b is provided so as to be able to move forward and backward, and when it moves to the ultrasonic head 38a side, the zipper tape J is pressed and sandwiched between the anvil tape J and the ultrasonic head 38a. In the anvil 38b, a caulking chamber for forming the caulking portion 27 and a melting chamber for forming the crushing portion 28 are formed as recesses on the contact surface with the zipper tape J, respectively.

The ultrasonic end crushing device 36 sandwiches the zipper tape J in a state where the tension of the zipper tape J is blocked by the tension blocking means 35 and the feeding is stopped between the ultrasonic head 38a and the anvil 38b. Then, by oscillating ultrasonic waves from the ultrasonic head 38a, as shown in FIG. 7, two caulking portions 27 and a crushing portion 28 are integrally formed. Further, the caulking portions 27 and the crushing portions 28 for each of the two are formed at predetermined intervals in the feeding direction of the zipper tape J, and the centers of the two adjacent caulking portions 27 and the crushing portions 28 are formed. By cutting, as shown in FIG. 3A, a zipper piece Ja having a length of one bag having one crimping portion 27 and one crushing portion 28 is formed at both ends.

Here, the distance between the ultrasonic end crushing device 36 and the downstream roller 37b installed on the downstream side thereof is set to be larger than the length of one zipper piece Ja. Then, while the zipper tape J is conveyed between the ultrasonic end crushing device 36 and the downstream roller 37b, the crimped portions 27 and the crushed portions 28 at both ends of one zipper piece Ja are formed. It has become.
As a result, when the rear crimped portion 27 and the crushed portion 28 of one zipper piece Ja are ultrasonically welded, the front crimped portion 27 and the crushed portion 28 are not bent by the downstream roller 37b, so that the flat surface is formed. It is supported in a shape, and it is possible to prevent an inner ring difference from occurring. The zipper tape J on which the crimped portions 27 and the crushed portions 28 are formed by the ultrasonic end crushing device 36 at intervals of the zipper pieces Ja is the zipper supply device of the zipper forming device 23 shown in FIGS. 5 and 6. It is transported to 31.

The zipper supply device 31 shown in FIG. 5 is provided with a delivery support portion 40 for the zipper piece Ja. A guide rail 41 made of, for example, an LM guide is installed along the delivery support portion 40, and the feeding member 42 and the transport member 43 are slidably installed on the guide rail 41. The feeding member 42 grips the zipper tape J formed by the crimping portion 27 and the crushing portion 28 at predetermined intervals and conveys the zipper tape J to the delivery position provided with the cutting position T shown in FIG. At the cutting position T, the zipper tape J is cut by the cutter 44 at the center of two crushed portions 28 to form a zipper piece Ja having a predetermined length. The zipper piece Ja is delivered from the feeding member 42 by the transport member 43 and transported to the position where it is attached to the film f.
In the delivery support portion 40, for example, a first motor M1 for reciprocating the feeding member 42 and a second motor M2 for reciprocating the transport member 43 are installed in upper and lower stages. The driving force of the first motor M1 is transmitted to the feeding member 42 by the first driving shaft 45, and the feeding member 42 is moved back and forth along the guide rail 41. Similarly, the second motor M2 transmits its driving force to the transport member 43 by the second drive shaft 46, and moves the transport member 43 back and forth along the guide rail 41.

An air chuck 49 having a pair of cylinders built therein is installed on the substrate 42a of the feeding member 42, and the pair of grip claws 48 for gripping the zipper tape J are held openably and closably by the air chuck 49. Similarly, the transport member 43 has a pair of air chucks 50 installed on the substrate 43a, and the air chucks 50 hold the pair of grip claws 51 for gripping the zipper tape J so as to be openable and closable.
In FIG. 6, a control means 53 for controlling the movement of the feeding member 42 and the transporting member 43 and the delivery of the zipper piece Ja is installed. The control means 53 drives and controls the feeding member 42 and the conveying member 43 according to the width and length dimension data of the bag with zipper, the film f, and the zipper piece Ja input from the input means 54. Further, a film sensor 55 that detects the meandering of the film f to be conveyed at its end is installed, and the detection result is input to the control means 53 to adjust the temporary fixing position of the zipper piece Ja to the film f by the conveying member 43. To do.

According to the control means 53, as shown in FIG. 7, the zipper tape J is gripped by the grip claw 48 of the feeding member 42 and is fed to the delivery position. At the delivery position, the transport member 43 grips the zipper tape J by the grip claw 51 on the left side of the feed member 42. Then, one zipper piece Ja is cut from the tip of the zipper tape J by the cutter 44, the feeding member 42 separates the zipper piece Ja, and the transport member 43 transports the zipper piece Ja to the temporary attachment position on the film f.
At that time, in the present embodiment, the feeding position is set so that the center of the zipper piece Ja coincides with the center line O of the film f. When meandering occurs in the film f, when the film sensor 55 detects the amount of meandering X in the width direction, the movement position of the zipper piece Ja is corrected by the distance X, so that the zipper piece Ja is aligned with the center line O of the film f. Can be adjusted so that the centers of the are aligned.

The manufacturing apparatus 1 for a bag with a zipper provided with the zipper attaching apparatus 3 according to the present embodiment has the above-described configuration, and then a method of attaching the zipper piece Ja to the film f will be described with reference to FIG. 7. ..
In FIG. 1, the film f is unwound from the film roll F and conveyed to the zipper affixing device 3. In FIG. 4, the zipper tape J intermittently unwound from the zipper roll is conveyed to the zipper end forming device 30 of the zipper forming device 23 via the tension applying member 32. In the zipper end forming device 30, the ultrasonic head 38a and the anvil 38b of the ultrasonic end crushing device 36 sandwich the zipper tape J between the upstream roller 37a and the downstream roller 37b on the downstream side of the tension applying member 32. They are arranged facing each other. As shown in FIG. 4, when the crimping portion 27 and the crushing portion 28 on the upstream side are formed in the zipper piece Ja continuously formed on the zipper tape J, the crimping portion 27 and the crushing portion 28 on the downstream side are downstream. It is located on the upstream side of the side roller 37b.

Therefore, the zipper tape J including at least one zipper piece Ja is held flat between the downstream roller 37b and the ultrasonic end crushing device 36. In this state, the anvil 38b operates on the ultrasonic head 38a of the ultrasonic end crushing device 36 to crimp and melt the zipper tape J by ultrasonic waves, and the crimped portion 27 and the crushed portion 28 on the upstream side are formed. To form.
Therefore, when forming a zipper piece Ja for one piece of the zipper tape J intermittently conveyed by the ultrasonic end crushing device 36, an inner ring difference occurs when the zipper piece Ja is wound around the downstream roller 37b and the direction is changed. Therefore, a flat and highly accurate zipper piece Ja can be continuously formed. In this way, the zipper tape J having two crimped portions 27 and crushed portions 28 formed on both side ends of each zipper piece Ja is conveyed to the zipper supply device 31.

The zipper tape J conveyed from the ultrasonic end crushing device 36 to the zipper supply device 31 shown in FIG. 5 is gripped by the grip claw 48 of the feeding member 42 according to the instruction from the control means 53. Then, as shown in FIGS. 7A to 7C, the feeding member 42 pulls out the zipper tape J and holds it at the delivery position.
In this state, the rear end portion of the zipper piece Ja on the tip end side of the zipper tape J is held at the cutting position T, the transport member 43 moves, and the zipper tape J is gripped on the tip end side of the feeding member 42. Then, the cutter 44 cuts at the center of the two crushed portions 28 on the rear end side of the zipper piece Ja, and separates the zipper piece Ja on the front end side.

Then, as shown in FIGS. 7 (d) and 7 (e), the feeding member 42 returns to the rear and grips the tip of the zipper tape J at the feeding start position. At the same time, the transport member 43 grips the zipper piece Ja with the grip claw 51 and moves forward to the left side of the film f, and the center line O of the film f and the center line of the zipper piece Ja coincide with each other as the sticking position. Stack. On the other hand, the film f is moved to the heater guide portion 14 of the zipper sticking device 3 and is held in the stopped state.
Next, as shown in FIG. 2, the heater cylinder 20 in the zipper sticking device 3 is operated to press the heater head 22 against the fixedly held heater cradle 19, and the zipper piece Ja and the film f are thermocompression bonded. , Temporarily attach. After that, the feeding member 42 grips the tip of the zipper tape J, pulls it forward, and moves it to the delivery position. Further, the transport member 43 separates the grip claw 51 from the zipper piece Ja and returns to the delivery position of the zipper tape J.
In this way, the feeding member 42 feeds the zipper tape J to the delivery position, the conveying member 43 receives the zipper piece Ja, cuts each zipper piece Ja, and moves the film f to the sticking position repeatedly.

Further, when the film f is conveyed to the heater guide portion 14 at the position where the zipper piece Ja is attached, the film f may meander in the width direction. When the film sensor 55 detects the meandering amount of the film f as X, the detection signal is output to the control means 53. The control means 53 sets the moving position of the zipper piece Ja by the transport member 43 so that the correction amount in the width direction of the zipper piece Ja is X with respect to the center line O of the film f according to the meandering amount X of the film f. .. Thereby, the deviation of the temporary fixing position of the zipper piece Ja due to the meandering of the film f can be corrected, and the accuracy of the mounting position of the zipper piece Ja centered on the center line O can be ensured.
The film f temporarily fixed with the zipper piece Ja is conveyed to the bag making device 2, formed into a tubular shape through the gap between the bag making tube 6 and the bag making guide 7, and both ends of the film f are vertically sealed with vertical sealers 8. At the same time, it is conveyed downward by the feeding belt 9. Below the bag making tube 6, a horizontal sealer 10 is used to laterally seal the bottom of the zippered bag and the upper part of the zippered bag above it to cut it. After that, the temporarily fixed zipper piece Ja is heat-sealed and fixed by the main attachment heater 11.

As described above, according to the zipper attaching device 3 of the zippered bag manufacturing apparatus 1 according to the first embodiment, the feeding member 42 and the conveying member 43 can be individually moved and controlled except at the time of delivery. Compared with the zipper sticking device, the feeding of the zipper tape J by the feeding member 42 and the feeding operation of the zipper piece Ja by the feeding member 43 to the mounting position on the film f can be performed at a high speed. Therefore, the bag-making operation of the film f with a zipper can be performed at high speed.
Moreover, the feeding member 42 and the transporting member 43 reciprocate along one guide rail 41 to feed the zipper tape J and deliver the cut zipper piece Ja to the attachment position. Therefore, the number of parts is small and the cost is low.

Since the film sensor 55 can detect the meandering of the film f and correct the sticking position of the zipper piece Ja, even if the film f meanders, the zipper piece Ja can be stuck at an accurate position on the film f. it can. This makes it possible to prevent the occurrence of defective products when the film f is made into a bag.
Further, in the zipper pasting device 3 according to the present embodiment, the zipper tape J held flat between the ultrasonic end crushing device 36 and the downstream roller 37b is provided with two zipper pieces Ja at both ends. Since the crimped portion 27 and the crushed portion 28 can be welded and formed in sequence, it is possible to prevent the male side zipper tape 24 and the female side zipper tape 25 that are held and held from being misaligned due to the inner ring difference and disengagement.

The zipper sticking device 3 of the zippered bag manufacturing device 1 according to the first embodiment of the present invention has been described in detail above, but the present invention is not limited to the above-described embodiment, and the gist of the present invention is described. Appropriate changes and substitutions can be made without deviation, and all of these are included in the present invention. Hereinafter, other embodiments and modifications of the present invention will be described, but the same reference numerals will be used for the same or similar parts and members as in the above-described embodiments, and the description thereof will be omitted.

8 to 10 show the zipper sticking device 3 according to the second embodiment of the present invention.
In the second embodiment, as described above, the welding residue that may be generated when the fitting portion 26 of the zipper tape J is crushed by the ultrasonic end crushing device 36 can be reliably eliminated. That is, in the zipper end forming device 30 shown in FIG. 4, a welding residue collecting device 58 for collecting welding debris from the zipper tape J was installed between the ultrasonic end crushing device 36 and the downstream roller 37b.

The welded residue collecting device 58 will be described with reference to FIGS. 8 to 10. In the welded waste collecting device 58 shown in FIGS. 8 and 9, the substrate 59 is fixed in an upright state substantially parallel to the zipper tape J in which the fitting portion 26 is crushed at predetermined intervals, and the substrate 59 is fixed to the substrate 59 in the transport direction of the zipper tape J. The support plate 60 is installed in the direction orthogonal to each other.
An opening 60a is formed in the support plate 60, and a pair of zipper cleaners 61 are arranged to face each other on both sides of the opening 60a, and the zipper tape J is conveyed between the pair of zipper cleaners 61. Each zipper cleaner 61 is connected to an air supply pipe 62, and a plurality of outlets 61b are formed at predetermined intervals along the conveying direction of the zipper tape J on the protruding portions 61a on the facing surfaces.

As shown in FIGS. 9 and 10A, the protruding portion 61a of each zipper cleaner 61 faces the fitting portion 26 of the zipper tape J, and the flange portion 24b and the flange portion extend in the width direction from the fitting portion 26. It is inserted between 25b and 25c. Moreover, the zipper cleaner 61 is housed in a cover box 63 installed so as to surround the support plate 60. A recovery box 64 for collecting welding debris and the like through the opening 60a is attached to the lower part of the support plate 60.
Therefore, the welding debris adhering to the crimped portion 27 and the crushed portion 28 of the fitting portion 26 is blown off in the cover box 63 by the air blown from the outlet 61b of the protruding portion 61a of each zipper cleaner 61 and collides with the cover box 63. , Can be collected in the collection box 64 from the opening 60a.

Further, a guide hole 59a for moving the support plate 60 together with the zipper cleaner 61 is formed on the substrate 59, and a rack 67 is fixed below the guide hole 59a along the longitudinal direction of the guide hole 59a. The support plate 60 is connected to the handle 68 through the guide hole 59a, and the pinion 69 provided on the handle 68 meshes with the rack 67. Therefore, by rotating the handle 68 in the forward and reverse directions, the support plate 60 and the zipper cleaner 61 can be moved back and forth along the substrate 59 to adjust the position. Further, a lock member 70 for fixing the support plate 60 to the rack 67 is installed.
In the present embodiment, when the width of the bag with the zipper is changed, the length of the zipper piece Ja is also changed, so that the distance between the crushed portions 28 is also changed. Further, the zipper cleaner 61 does not always blow air, but blows air to each end of the zipper tape J that has been crushed immediately before at the timing when the ultrasonic crushing device 36 crushes the end of the zipper tape J. Therefore, the zipper cleaner 61 needs to be located at a position separated by the length of the zipper piece Ja from the ultrasonic end crushing device 36, and the ultrasonic crushing device changes the width of the bag with the zipper and the zipper piece Ja. Since it is necessary to change the installation position of the 36, the position is adjusted by the handle 68.

Note that FIG. 10B shows a modified example of the zipper tape J. For example, flange portions 24b of the male zipper tape 24 are formed on both sides of the fitting convex portion 24a. Therefore, the welding debris is blown off by the air discharged from the outlet 61b of the zipper cleaner 61, but collides with the cover box 63 and falls into the opening 60a.
Therefore, even if welding debris is generated when the fitting portion 26 of the zipper tape J is crushed by the ultrasonic end crushing device 36, it can be reliably collected without leaving it around the zipper tape J.

Further, in the zipper end forming device 30, when the welding residue is blown off by the zipper cleaner 61, the cover box 63 that suppresses the scattering of the welding residue and the recovery box 64 that collects the welding residue through the opening 60a of the support plate 60 are not necessarily used. It does not have to be installed. Even in this case, the welding debris blown off by the zipper cleaner 61 falls below the transport line of the zipper tape J, on the floor surface, etc., so that it is separated from the zipper tape Ja and can be prevented from adhering to the bag with the zipper.

Further, in the zipper supply device 31, the feeding member 42 and the transporting member 43 are reciprocated along one guide rail 41 to feed the zipper tape J and to deliver and attach the cut zipper piece Ja to the delivery and sticking positions. Although it is used for transportation, it may be moved by separate guide rails.
Further, the installation position of the zipper piece Ja with respect to the film f does not have to be aligned with the center line O, and can be attached at an appropriate position such as the edge of the film f.
The zipper piece Ja is included in the zipper. The ultrasonic end crushing device 36 is included in the zipper end crushing means.

1 Bag manufacturing device with zipper 2 Bag making device 3 Zipper pasting device 23 Zipper forming device 24 Male side zipper piece (male side zipper tape)
24a Fitting convex part 24b Flange part 25 Female side zipper piece (female side zipper tape)
25a Fitting recess 25b Flange part 26 Fitting part (opening and closing part)
27 Crimping part 28 Crushing part 30 Zipper end forming device 31 Zipper end forming device 36 Ultrasonic end crushing device 37b Downstream roller 41 Guide rail 42 Feeding member 43 Conveying member 48, 51 Grip claw 53 Control means 58 Welding residue collection Device 61 Zipper cleaner 61a Protruding part 61b Outlet 63 Cover box 64 Recovery box J Zipper tape Ja Zipper piece f Film

Claims (4)

In a zipper sticking device that sticks a zipper of a predetermined length to a film
A zipper reel that feeds out zipper tape and
A feeding member that moves the fed-out zipper tape to a delivery position having a cutting position at which the zipper tape is cut, and a feeding member.
A transport member in which the zipper tape is cut to a predetermined length at the cutting position is delivered from the feeding member at the delivery position and moved to a position where the film is attached to the film.
A guide member in which the feeding member and the transporting member are movably installed to guide the delivery and movement of the zipper by the feeding member and the transporting member.
A control means for controlling the movement of the feeding member and the transporting member, respectively.
A zipper pasting device characterized by being equipped with. It is further equipped with a film sensor that detects the position of the film in the width direction.
The zipper sticking device according to claim 1, wherein the control means adjusts the sticking position of the zipper by the transport member based on the position of the film detected by the film sensor. A zipper end crushing means for crushing and welding a position of the zipper end portion of the zipper tape unwound from the zipper reel, and a zipper end crushing means.
A downstream roller provided at a position downstream of the zipper end crushing means in the feeding direction of the zipper tape at a position separated by the length of the zipper or more.
The zipper pasting device according to claim 1 or 2. A zipper end crushing means for crushing and welding the position of the end of a zipper of a predetermined length in the unwound zipper tape, and a zipper end crushing means.
A zipper cleaner having an air outlet installed at a position facing the fitting convex portion and the fitting concave portion of the zipper tape crushed by the zipper end crushing means.
A zipper end forming device characterized by being provided with.

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