JP5886467B1 - Method and apparatus for manufacturing synthetic resin gusset bag - Google Patents

Abstract

A method and an apparatus for manufacturing a gusset bag capable of selecting and manufacturing a single gusset bag or a two-piece gusset bag with one automatic bag making machine. A cutting step 110 for cutting a horizontal gusset film 3 into one or two pieces is provided. A holding step 120 for holding the horizontal gusset film so as to be adjustable in length is provided. A conveying step 130 is provided for sucking and conveying the longitudinal ends of the held horizontal gusset film 3. A temporary fixing process 140 for temporarily fixing the horizontal gusset film 3 on the back film 2 is provided. A bottom temporary fixing step of temporarily fixing the surface film 1 to the bottom side of the horizontal gusset film 3 is provided. An adhesive step of opening the bottom side end of the horizontal gusset film 3 and bonding the folded bottom film 4 is provided. [Selection] Figure 2

Description

  The present invention relates to a method and an apparatus for manufacturing a gusset bag formed of a synthetic resin material, and selects and manufactures a single-piece gusset bag or a two-piece gusset bag with a single automatic bag-making machine. The present invention relates to a method and apparatus for manufacturing a synthetic resin gusset bag.

  As a method and an apparatus for manufacturing a synthetic resin gusset bag, techniques described in Patent Documents 1 to 4 have been proposed.

  The bag making machine for a gusset bag described in Patent Document 1 folds the lower end portion of a belt-shaped film constituting the body portion (lateral gusset portion) into two folds, and joins the bottom molding material to the lower end portion. This is an apparatus configured to manufacture the square bottom of the gusset bag.

  In the manufacturing method described in Patent Document 2, a horizontal gusset film that forms the left and right horizontal gusset parts and a bottom film that forms the bottom part are formed, and a position that is orthogonal to one longitudinal side surface of the belt-like front and back film The horizontal gusset film is supplied onto the front and back film from the front side, and the bottom film is supplied along the other side surface to produce a zette bag.

  Patent document 3 is the manufacturing method and manufacturing apparatus which this inventor invented previously. That is, the horizontal gusset film constituting the left and right horizontal gussets is placed on the upper surface of the back film from the upper side of the back film and temporarily fixed, and then the surface film is supplied to shorten the manufacturing time of the gusset bag and improve the efficiency. It has become possible to manufacture well.

  Patent Document 4 is a manufacturing method and a manufacturing apparatus improved based on Patent Document 3 so that two gusset bags can be taken. This improvement is achieved by temporarily fixing a horizontal gusset film having a length twice that of the horizontal gusset portion on the back film having a width that is twice the height of the gusset bag to be manufactured. By cutting at the part, two gusset bags can be taken.

Japanese Patent No. 3655627 Japanese Patent No. 4436521 Japanese Patent No. 5538598 Japanese Patent No. 5584815

  The manufacturing method and device described in Patent Document 4 enable two gusset bags to be picked up, but it is difficult to respond to changes in the length of the horizontal gusset, so it can be used as a two-piece dedicated machine. However, it was a configuration that could not be used as a single product.

  That is, in order to form a horizontal gusset by the manufacturing method of Patent Document 4, the longitudinal center part of the horizontal gusset member for taking two pieces is cut to form a pair of bottom parts, so the length of the horizontal gusset member is 2 in advance. It is set to the length for capping. Further, since the both ends of the horizontal gusset material are sucked by the transport device above the back film and transported as it is onto the back film, this transport device is the length of the horizontal gusset member for taking two pieces in advance. It is configured to match.

  On the other hand, as described in Patent Document 3, when manufacturing a gusset bag with a single-chip manufacturing method and apparatus, the length of the horizontal gusset member is set in advance to the length for single-chip, and this horizontal gusset material Since the both end portions are sucked and directly conveyed onto the back film, the conveying device is configured in advance according to the length of the horizontal gusset member for taking one piece.

  As described above, in the manufacturing methods and apparatuses described in Patent Documents 3 and 4, since the horizontal gusset material is directly transported from above the back film, the transport device is set in advance to the length of the lateral gusset. For this reason, even if each can be used as a machine for exclusive use of two picking machines or a machine for exclusive use of one picking machine, it has not been possible to select either one for single picking or two for picking with one automatic bag making machine. As a result, it has been difficult to arbitrarily change the production amount per unit time in one automatic bag making machine.

  Therefore, the present invention was created to solve the above-described problems. When manufacturing a gusset bag, a single gusset bag or a two-piece gusset bag is selected by one automatic bag making machine. It is an object of the present invention to provide a manufacturing method and a manufacturing apparatus for a synthetic resin gusset bag that can be manufactured and can be arbitrarily changed in manufacturing amount per unit time.

In order to achieve the above object, the first means in the present invention is to temporarily fix the horizontal gusset film 3 so as to be orthogonal to the longitudinal direction from the upper side to the upper surface of the belt-like back film 2 transported by the transport roller 21, and then the back surface. The horizontal gusset forming means 100 for superimposing the surface film 1 on the upper surface of the film 2, the bottom forming means 200 for arranging the belt-like bottom film 4 at the bottom side end of the horizontal gusset film 3, the horizontal gusset film 3 and the bottom film 4 In the method for producing a synthetic resin gusset bag having a joining means 300 for joining between the front film 1 and the back film 2,
The horizontal gusset forming means 100 includes a cutting step 110 for cutting the length of the horizontal gusset film 3 into one or two pieces of the gusset bag 10, and other than the longitudinal both ends of the cut horizontal gusset film 10 A holding step 120 for holding the portion with adjustable length, a conveying step 130 for sucking and conveying the longitudinal both ends of the horizontal gusset film 3 held in the holding step 120 onto the back film 2, and a horizontal gusset film 3 is provided with a temporary fixing step 140 for temporarily fixing the lateral gusset film 3 on the back film 2 in a state in which the opening side of 3 is arranged on the long side edge side of the back film 2.
The bottom portion forming means 200 is provided with a bottom temporary fixing step 210 for temporarily fixing the surface film 1 to the bottom side of one or two horizontal gusset films 3, and one or two by opening the temporarily fixed surface film 1. And a bonding step 220 for bonding the bottom film 4 to the folded portion by opening and folding the bottom side end of each horizontal gusset film 3.

  The second means is that the holding step 120 in the horizontal gusset forming means 100 is a horizontal gusset film between an upper belt 31 and a lower belt 32 configured to be stretchable according to the length of the horizontal gusset film 3. 3 is a step of holding the surface excluding the left and right end portions.

  The third means is a position of the opening of the one or two horizontal gusset films 3 by folding back the extending member 2A extended from one or both of the longitudinal side edges of the back film 2 in the joining means 300. The header 16 and the flap 17 are formed, and the header 16 and the flap 17 are provided in the opening of the one or two gusset bags 10.

  The fourth means is that in the joining means 300, a pair of reinforcing films 7 disposed between the front film 1 and the back film 2 are positioned at the openings of the one or two horizontal gusset films 3. It has a step of joining and opening a hand hole 18A penetrating through the reinforcing film 7, and the hand 18 is provided at the opening of the one or two gusset bags.

  A fifth means is that, in the joining means 300, the chuck strip 8 disposed between the front film 1 and the back film 2 is positioned at the opening of the one or two horizontal gusset films 3. And a sealing chuck 19 is provided at the opening of the one or two gusset bags 10.

The sixth means is to temporarily fix the lateral gusset film 3 so as to be orthogonal to the longitudinal direction from the upper side to the upper surface of the belt-like back film 2 transported by the transport belt, and then superimposes the surface film 1 on the upper surface of the back film 2, A synthetic resin gusset bag in which the belt-like bottom film 4 is disposed at the bottom side end of the horizontal gusset film 3 and the horizontal gusset film 3 and the bottom film 4 are joined between the front film 1 and the back film 2. In the manufacturing equipment of
A feed mechanism 20 that moves the front film 1 and the back film 2 along the longitudinal direction by a transport roller 21;
An upper belt 31 and a lower belt 32 that are configured to be stretchable according to the length of the horizontal gusset film 3 cut to an arbitrary length are provided, and a horizontal gusset is provided between the upper belt 31 and the lower belt 32. The side of the film 3 excluding the right and left ends is pressed and held , and the horizontal gusset film 3 cut into the length of one or two gusset bags 10 is conveyed onto the back film 2. A lateral gusset arrangement mechanism 30;
A horizontal gusset temporary fixing mechanism 40 for temporarily fixing the horizontal gusset film 3 on the back film 2 in a state where the opening side of the horizontal gusset film 3 is arranged on the longitudinal side edge side of the back film 2;
A temporary surface fixing mechanism 50 for temporarily adhering the surface film 1 onto one or two horizontal gusset films 3;
By opening the cut end portion of the horizontal gusset film 3 to which the surface film 1 is temporarily bonded in the width direction, the cut opening 3A of the horizontal gusset film 3 is opened, and the bottom portion 3B of the horizontal gusset film 3 positioned at the bottom of the gusset bag 10 is respectively provided. A folding back bottom display mechanism 60;
One closing film 4 is bonded to the bottom surface portion 3B of one or two horizontal gusset films 3, and a closing tool 71 configured to close the bottom surface portion 3B folded together with the bonded bottom film 4 is provided. A bottom seal mechanism 70;
A joining mechanism 80 for joining the lateral gusset film 3 and the bottom film 4 to the surface film 1 and the back film 2 and cutting the surface film 1 and the back film 2 along the outline of one or two gusset bags 10; Be prepared.

  The horizontal gusset arrangement mechanism 30 of the seventh means includes a pair of slide suction machines 33 for sucking and feeding the longitudinal both ends of the held horizontal gusset film 3 onto the back film 2, and one slide suction machine 33 is fixed to the longitudinal one end side of the horizontal gusset film 3, and the other slide suction device 33 is movably provided along the other longitudinal end side of the lateral gusset film 3, so that the length of the lateral gusset film 3 is increased. It is configured to match the size.

  As in the manufacturing method according to claim 1, by providing the horizontal gusset forming means 100, the bottom forming means 200, and the joining means 300, a single automatic bag making machine can be used to collect a single gusset bag or two pieces. A gusset bag can be selected and manufactured, and the production amount of the gusset bag per unit time can be arbitrarily changed.

  The lateral gusset forming means 100 according to claim 2 holds the surface of the lateral gusset film 3 excluding the left and right end portions between the upper belt 31 and the lower belt 32 configured to be stretchable. It can be easily held in accordance with the length of the horizontal gusset film 3 cut into pieces or two pieces. In addition, since the size of each gusset bag 10 can be freely changed, not only the selection of one piece or two pieces but also the size change can be adapted so that various gusset bags 10 can be easily manufactured. It is possible.

  According to the joining means 300 of the third aspect, one or two gusset bags 10 including the header 16 and the flap 17 can be taken.

  According to the joining means 300 of the fourth aspect, one or two gusset bags 10 each having the handbag 18 can be taken.

  According to the joining means 300 of the fifth aspect, one or two gusset bags 10 provided with the sealing chuck 19 can be taken.

  According to the sixth aspect, the manufacturing apparatus of the present invention can easily manufacture a single gusset bag or a two-piece gusset bag by using one automatic bag making machine.

Moreover , since the upper belt 31 and the lower belt 32 that are configured to be stretchable according to the length of the horizontal gusset film 3 are provided, they are cut into one or two gusset bags 10. The length of the horizontal gusset film 3 can be adjusted. Moreover, the length adjustment of the upper belt 31 and the lower belt 32 can be finely adjusted according to the slight length of the horizontal gusset film 3, so that it can be adapted to individual size changes and is extremely diverse. Gusset bag 10 can be manufactured.

According to the lateral gusset arrangement mechanism 30 of claim 7 , one slide suction device 33 is fixed to the longitudinal one end side of the lateral gusset film 3, and the other slide suction device 33 is secured to the longitudinal other end portion side of the lateral gusset film 3. In accordance with the length of the horizontal gusset film 3 held by the stretchable upper belt 31 and lower belt 32, both ends are sucked and conveyed onto the back film 2. can do.

Schematic which shows the Example of 2 picking of this invention manufacturing method. The principal part schematic which shows one Example of the horizontal gusset formation means and horizontal gusset arrangement | positioning mechanism of this invention manufacturing method. Schematic which shows the bottom part formation means of this invention manufacturing method. Schematic which shows the example of 1 picking of this invention manufacturing method. The perspective view which shows the holding process of this invention manufacturing method. The holding | maintenance process of this invention manufacturing method is shown, (A) is for taking two pieces, (B) is a perspective view showing for taking one piece. The principal part perspective view which shows the horizontal gusset arrangement | positioning mechanism of this invention manufacturing apparatus. The fragmentary perspective view which shows the suction state by the slide suction machine of this invention horizontal gusset arrangement | positioning mechanism. The schematic perspective view which shows the one part Example of 2 picking of this invention manufacturing apparatus. The schematic plan view which shows the bottom part expression mechanism of this invention manufacturing apparatus. Schematic which shows one Example of the joining mechanism of this invention manufacturing apparatus. The schematic plan view which shows one Example of the state joined by this invention manufacturing apparatus. The perspective view which shows one Example of the gusset bag shape | molded by this invention manufacturing apparatus. Schematic which shows the other Example of the joining mechanism of this invention manufacturing apparatus. The schematic plan view which shows the other Example of the state joined by this invention manufacturing apparatus. The perspective view which shows the other Example of the gusset bag shape | molded with this invention manufacturing apparatus. Schematic which shows the other Example of the joining mechanism of this invention manufacturing apparatus. The schematic plan view which shows the other Example of the state joined by this invention manufacturing apparatus. The perspective view which shows the other Example of the gusset bag shape | molded with this invention manufacturing apparatus. Schematic which shows the Example of single picking of the joining mechanism of this invention manufacturing apparatus. The perspective view which shows the other Example of the gusset bag shape | molded with this invention manufacturing apparatus. The perspective view which shows the other Example of the gusset bag shape | molded with this invention manufacturing apparatus.

  According to the present invention, it is possible to select and manufacture a single-piece gusset bag or a two-piece gusset bag with one automatic bag making machine, and it is possible to arbitrarily change the production amount of the gusset bag. We achieved the original purpose of becoming.

  As the material of the synthetic resin gusset bag of the present invention, for example, any synthetic resin material such as a film material obtained by laminating a nylon film on a polypropylene film, an LDPE film, an HDPE film, a PET film, or an aluminum vapor deposition film can be used. It is. And the structure of this invention gusset bag 10 is comprised by the front body part 11, the back body part 12, the horizontal gusset part 13, and the square bottom part 14 (refer FIG. 13, FIG. 16, FIG. 19).

  The production method of the present invention particularly has the following three means. That is, the horizontal gusset forming means 100, the bottom forming means 200, and the joining means 300 (see FIG. 1).

  The lateral gusset forming means 100 is a means for forming the lateral gusset film 3 constituting the lateral gusset portion 13 of the gusset bag 10. This horizontal gusset film 3 is a film member in which a strip-like film made of a synthetic resin is folded into a flat tube shape and forms the horizontal gusset portion 13 of the gusset bag 10 (see FIG. 2). And after fixing the horizontal gusset film 3 temporarily to the upper surface of the strip | belt-shaped back surface film 2 conveyed with the conveyance roller 21 so as to be orthogonal to a longitudinal direction, the surface film 1 is made to overlap the upper surface of the back surface film 2. FIG.

  Therefore, the horizontal gusset forming means 100 further includes a cutting step 110, a holding step 120, a conveying step 130, and a temporary fixing step 140 (see FIG. 2).

  The cutting step 110 is a step of cutting the length of the horizontal gusset film 3 into one or two gusset bags 10 (see FIG. 2). At this time, the length of the lateral gusset film 3 can be finely adjusted according to the size of each gusset bag 10 in addition to the length of one or two gusset bags 10.

  The holding step 120 is a step of holding a portion other than the longitudinal ends of the cut horizontal gusset film so that the length can be adjusted by the horizontal gusset arrangement mechanism 30 described later (see FIG. 2). At this time, the length of the two gusset bags 10 is twice as long as the one of the gusset bags 10, but this holding step is performed no matter how the length of the lateral gusset film 3 changes. The center side of the lateral gusset film 3 with both ends left is held by 120.

  That is, the horizontal gusset arrangement mechanism 30 used in the holding step 120 includes an upper belt 31 and a lower belt 32 configured to be stretchable, and a surface of the horizontal gusset film 3 excluding the left and right end portions is interposed therebetween. (See FIG. 5). When the lengths of the upper belt 31 and the lower belt 32 are adjusted to lengthen the holding portion, the horizontal gusset film 3 formed in a length for taking two pieces can be held (FIG. 6A). reference). Further, when the lengths of the upper belt 31 and the lower belt 32 are adjusted to shorten the holding portion, it is possible to hold the horizontal gusset film 3 formed to have a length for picking up one piece (FIG. 6 (b) )reference).

  The conveying step 130 is a step of sucking and conveying the longitudinal both ends of the horizontal gusset film 3 held in the holding step 120 onto the back film 2 (see FIG. 2). In the conveying step 130, the both ends of the horizontal gusset film 3 are sucked while being held in the holding step 120, and then the holding step 120 is released, and then the horizontal gusset film 3 is conveyed.

  The temporary fixing process 140 is a process of temporarily fixing the horizontal gusset film 3 on the back film 2 in a state where the opening side of the horizontal gusset film 3 is arranged on the long side edge side of the back film 2 (see FIG. 2). At this time, in order to place the horizontal gusset film 3 having a length corresponding to two pieces of the gusset bag 10, the horizontal gusset film 3 for taking two pieces is placed on the back film 2 having a width of two pieces of the gusset bag 10. Temporarily fix. Thereafter, in the case of taking two pieces, the horizontal gusset film 3 is cut at a position where the width of the horizontal gusset film 3 bisects. The cut end of the horizontal gusset film 3 becomes the bottom of the gusset bag 10.

  On the other hand, the single-sided horizontal gusset film 3 is arranged on the longitudinal side edge side of the back film 2 on both the opening side and the bottom side (see FIG. 4). In this state, the horizontal gusset film 3 is temporarily fixed on the back film 2. In the case of taking one piece, it is not necessary to cut the horizontal gusset film 3, but it may be cut depending on the case where the width of the horizontal gusset film 3 is not uniform. Moreover, the width | variety of the back surface film 2 becomes a width | variety of the width | variety of the back surface film 2 for 2 piece taking.

  The bottom forming means 200 is means for disposing the belt-like bottom film 4 at the bottom side end of the horizontal gusset film 3 (see FIG. 3). The bottom forming means 200 includes a bottom temporary fixing process 210 and an adhesion process 220.

  The bottom temporary fixing step 210 is a step of temporarily fixing one surface film 1 to the bottom side of the horizontal gusset film 3 cut into one or two pieces (see FIG. 3). When temporarily fixing the surface film 1 to the horizontal gusset film 3 for taking two pieces, since the horizontal gusset film 3 has already been divided into two, the temporarily fixed surface film 1 is also cut at the bottom side of the horizontal gusset film 3. On the other hand, in the case of the horizontal gusset film 3 for taking a single piece, the surface film 1 having a width corresponding to the length of the horizontal gusset film 3 is used (not shown).

  The bonding step 220 is a step of opening and folding the bottom side end of one or two horizontal gusset films 3 and bonding the bottom film 4 to the folded portion (see FIG. 3). At this time, since the surface film 1 is temporarily fixed to the bottom side end portion of the horizontal gusset film 3, by opening the surface film 1 in the width end direction, the cut opening 3A and the bottom portion of the horizontal gusset film 3 are provided. The side end portion is also opened along with the surface film 1. In this way, the opening end of the bottom is defined as a cutting opening 3A, and the opened bottom side end is defined as a bottom 3B (see FIG. 10). And the bottom film 4 of 1 sheet is adhere | attached on this bottom face part 3B.

  Although the illustrated bottom film 4 is a separate film from the surface film 1, the bottom film 4 can be formed separately from the surface film 1 (not shown). Finally, the bottom portion 3B to which the bottom film 4 is bonded is closed together with the bottom film 4 (see FIG. 10).

  The joining means 300 is means for joining the horizontal gusset film 3 and the bottom film 4 between the front film 1 and the back film 2 (see FIG. 11). Then, it cut | disconnects along the outline of the gusset bag 10, and forms the 1 or 2 gusset bag 10. FIG. At this time, the opening side of the gusset bag 10 is positioned along the longitudinal side edge of the back film 2 regardless of whether the number of gusset bags 10 is one or two. Therefore, a header 16, a flap 17, a handbag 18, a sealing chuck 19 and the like can be provided on the opening 15 side as necessary.

  FIGS. 11 to 13 show a process of forming the header 16 and the flap 17 at the position of the opening 15 of the two gusset bags 10 in the joining means 300. That is, it is a process of forming the header 16 and the flap 17 at the position of the opening 15 by folding back the extending member 2A extended from both ends of the width of the back film 2 (see FIG. 11). A header 16 and a flap 17 are formed on the gusset bag 10 formed by such a process (see FIG. 12). In the illustrated example, when the flap 17 is folded, a long adhesive tape 17A is disposed inside the flap 17 (see FIG. 11). And when the front film 1 and the back film 2 are cut | disconnected and the two gusset bags 10 are formed, the gusset bag 10 with the flap 17 is formed (refer FIG. 13). On the other hand, in the single-use gusset bag 10, since one side of the back film 2 is set as an opening, the header 16 and the flap 17 are attached to the opening of the gusset bag 10 using the process shown in FIG. 11. Can be formed (not shown).

  FIGS. 14 to 16 show a process of forming the hand hole 18 </ b> A at the position of the opening 15 of the two gusset bags 10 in the joining means 300. In the example of illustration, a pair of reinforcement film 7 is arrange | positioned between the surface film 1 and the back surface film 2, and it joins to the position of the opening part of a pair of gusset bag 10 (refer FIG. 14). Further, it is a step of opening the hand-carrying hole 18A at the position of the opening 15 of the portion reinforced by the reinforcing film 7. And if the front side surface 1 and the back surface film 2 are cut | disconnected (refer FIG. 15), the gusset bag 10 provided with 18 A of handbag holes will be formed (refer FIG. 16). On the other hand, in the single-use gusset bag 10, since one side of the back film 2 is set as an opening, a hand hole 18 </ b> A is formed in the opening of the gusset bag 10 using the process shown in FIG. 14. (Not shown).

  17 to 19 show a process of forming the sealing chuck 19 at the position of the opening 15 of the two gusset bags 10 in the joining means 300. In the illustrated example, first, the opening side end of the horizontal gusset film 3 is bonded to the front film 1 and the back film 2 with the adhesive tape 9 (see FIG. 17). Next, the chuck band 8 is disposed between the front film 1 and the back film 2, and the chuck band 8 is joined to the position of the opening 15 of the pair of gusset bags 10 (see FIG. 18). As a result, the sealing chuck 19 is provided in the opening 15 of each gusset bag 10 (see FIG. 19).

  On the other hand, since the single-sided gusset bag 10 has one side of the back film 2 set as an opening, the sealing chuck 19 can be formed in the same process (see FIG. 20). In this case, the lateral gusset film 3 is arranged on the longitudinal side edge side of the back film 2 on both the opening side and the bottom side (see FIG. 4). At this time, the width of the back film 2 is half the width of the back film 2 for taking two pieces. Further, when the chuck strip 8 is joined to the position of the opening 15 of one gusset bag 10, a sealing chuck 19 is provided in the opening 15 of the gusset bag 10 (see FIG. 19).

  Next, the manufacturing apparatus of the present invention will be described. The manufacturing apparatus of the present invention is an apparatus for performing the manufacturing method. That is, the basic structure of the apparatus for taking one or two gusset bags 10 made of synthetic resin is as follows: feed mechanism 20, lateral gusset arrangement mechanism 30, lateral gusset temporary fixing mechanism 40, surface temporary fixing mechanism 50, bottom surface expression. A mechanism 60, a bottom seal mechanism 70, and a joining mechanism 80 are provided.

  The feed mechanism 20 is a mechanism that moves the front film 1 and the back film 2 along the longitudinal direction (see FIG. 2). In the example of illustration, the feed mechanism 20 which moves the surface film 1 and the back film 2 using the some roller 21 is shown. And each film is sent by these conveyance rollers 21, and the conversion of a conveyance direction etc. are also performed. That is, a gradient portion 90 is provided that horizontally moves each film by the transport roller 21 and lifts the film diagonally upward to return it to the horizontal again (see FIG. 9).

  The horizontal gusset arrangement mechanism 30 is a mechanism for installing the horizontal gusset film 3 on the back film 2 (see FIG. 2). The illustrated horizontal gusset arrangement mechanism 30 includes a cutter 34 that cuts the horizontal gusset film 3 into a predetermined length. This cutter 34 feeds the horizontal gusset film 3 obtained by folding the film material for the horizontal gusset portion 13 into a substantially cylindrical shape to the position of the cutter 34 by the feed roller 35, and then the horizontal gusset film 3 is one piece of the gusset bag 10. Cut into minutes or two pieces. At this time, the end portions of the horizontal gusset film 3 folded into a substantially cylindrical shape are sealed with a spot seal tool 36 so as not to be opened. Then, the cut horizontal gusset film 3 is conveyed onto the back film 2.

  Further, the horizontal gusset arrangement mechanism 30 is provided with an upper belt 31 and a lower belt 32 that are configured to be extendable and contractible (see FIG. 5). In the illustrated example, the length of the horizontal gusset film 3 held by the upper belt 31 and the lower belt 32 is adjusted by using three reference gears 31A and 32A and two moving gears 31B and 32B, respectively. ing. The reference gears 31A and 32A are fixed in advance in a fixed position, and the moving gears 31B and 32B move horizontally with respect to the reference gears 31A and 32A so that the length of the surface holding the lateral gusset film 3 can be freely adjusted. It is configured.

  Further, the horizontal gusset arrangement mechanism 30 is provided with a pair of slide suction machines 33 (see FIG. 7). The slide suction machine 33 sucks the longitudinal both ends of the horizontal gusset film 3 held by the upper belt 31 and the lower belt 32 and conveys it onto the back film 2. The illustrated slide suction machine 33 is provided with a suction port 33A at the end of the belt-like substrate 33B (see FIG. 8).

  In the slide suction machine 33 shown in FIG. 7, the slide suction machine 33 on the reference gears 31A, 32A side is fixed in place in advance, and the slide suction machine 33 on the movement gears 31B, 32B side is configured to be movable horizontally. Yes. By comprising in this way, the position of the slide suction device 33 can be adjusted according to the length of the horizontal gusset film 3. Further, in the illustrated example, when the slide suction machine 33 moves while the both ends of the horizontal gusset film 3 are sucked by the slide suction machine 33, the horizontal gusset film is moved along the slide rail 33C arranged on the lower surface of the horizontal gusset film 3. 3 moves. In this way, the horizontal gusset film 3 is arranged on the back film 2 from above the back film 2 (see FIG. 2).

  The horizontal gusset temporary fixing mechanism 40 is a mechanism for temporarily fixing the horizontal gusset film 3 on the back film 2 (see FIG. 2). That is, the horizontal gusset film 3 placed on the back film 2 is temporarily fixed by the sealing hot plate 41. In the illustrated example, by applying a sealing hot plate 41 from the lower surface side of the back film 2 and pressing the horizontal gusset film 3 from above the horizontal gusset film 3 with a pressing stamp 42, the back film 2 and the horizontal gusset film 3 Is temporarily bonded. Furthermore, when the horizontal gusset film 3 for taking two pieces is arranged, a cutter 43 that bisects the temporarily bonded horizontal gusset film 3 is provided.

  The surface temporary fixing mechanism 50 is a mechanism for temporarily adhering the surface film 1 onto the horizontal gusset film 3 (see FIG. 9). In the illustrated example, a surface film 1 is arranged from above on a horizontal gusset film 3 temporarily bonded on a back film 2 for taking two pieces, and a sealing hot plate 52 is pressed from the upper surface side of the surface film 1. The bottom side of the horizontal gusset film 3 and the surface film 1 are temporarily bonded. When two surface films 1 are used, the horizontal gusset film 3 is bisected by the cutter 51.

  The bottom expression mechanism 60 is a mechanism that folds the bottom surface portion 3B of the horizontal gusset film 3 (see FIG. 10). In the example of illustration, the expansion roller 62 which contacts the cutting edge part 1A of the surface film 1 temporarily adhered to the horizontal gusset film 3 for taking 2 pieces is arrange | positioned, and the cutting edge part of the surface film 1 is arranged with this expansion roller 62 Open 1A. Then, the cut opening 3A of the horizontal gusset film 3 temporarily fixed to the surface film 1 is also opened together with the cut end 1A. Further, a folding plate 63 that contacts the side surface of the cutting opening 3A of the gusset forming material 3 is disposed. The folding plate 63 is a member that folds the cut opening 3A of the lateral gusset film 3 onto the lateral gusset film 3 to form a bottom surface portion 3B located at the bottom of the gusset bag 10. The folding plate 63 in the illustrated example has a configuration of a pair of plates that sandwich the cutting port 3 </ b> A widened by the spreading roller 62 from above and below.

  Further, the folding plate 63 of the bottom part exposing mechanism 60 is disposed on the gradient part 90 of the feeding mechanism 20 (see FIG. 9). If a part of the bottom part exposure mechanism 60 is arranged at such an inclined position, the cutting end 1A of the cylinder 1 and the cutting opening 3A of the horizontal gusset film 3 can be easily expanded, and the expansion process can be easily confirmed. There are also advantages.

  The bottom seal mechanism 70 is a mechanism for adhering one bottom film 4 to the bottom surface portion 3B of one or two lateral gusset films 3 that have been expanded (see FIG. 9). In the example of illustration, it adheres to the horizontal gusset film 3 for taking 2 pieces with the hot plate 72 for temporary fixing. At this time, the bottom film 4 is bonded to a portion where the cut opening 3A of the horizontal gusset film 3 is linear (see FIG. 10). Further, the bottom seal mechanism 70 is provided with a closing tool 71. The closing tool 71 is configured to close the bottom surface portion 3 </ b> B that is folded back together with the bonded bottom film 4. In the illustrated example, a plate-like closing tool 71 having an opening having a substantially C shape is provided. Then, the cut end 3A of the lateral film 3 folded together with the surface film 1 is brought into contact with the bottom film 4 by bringing the cut end 1A folded of the surface film 1 into contact with the substantially C-shaped opening. Each is configured to close.

  Further, the closing tool 71 of the bottom seal mechanism 70 is also disposed on the gradient portion 90 of the feed mechanism 20 in the same manner as the bottom expression mechanism 60 (see FIG. 9). When the closing tool 71 is disposed at such an inclined position, the folded cut end 1A and the cut opening 3A can be easily returned to the original position, and there is an advantage that the process of sealing the bottom can be easily confirmed.

  The joining mechanism 80 is a mechanism for taking one or two gusset bags 10 by joining the front film 1 and the back film 2 and then cutting them (see FIG. 9). The joining mechanism 80 includes a vertical sealing hot plate 81 and a horizontal sealing hot plate 82. And the horizontal gusset film 3 and the bottom film 4 are joined to the surface film 1 and the back film 2 by the hot plate 81 for vertical seals and the hot plate 82 for horizontal seals. Further, simultaneously with or after the joining, the front film 1 and the back film 2 are cut along the outline of one or two gusset bags 10 (see FIGS. 12, 15, and 18).

  A joining mechanism 80 shown in FIG. 11 is a mechanism for forming the header 16 and the flap 17 at the position of the opening 15 of the gusset bag 10. That is, in order to fold back the extending member 2A extended from both width ends of the back film 2 to form the header 16 and the flap 17 at the position of the opening 15, the reinforcing hot plate 83 for welding the folded portion of the header 16 is disposed. ing. Further, the welded header 16 is provided with a heating pin 84 that opens the locking hole 16A. By this joining mechanism 80, the gusset bag 10 with the header 16 and the flap 17 is formed (see FIG. 13).

  The joining mechanism 80 shown in FIG. 14 is a mechanism that forms a hand-hole 18 </ b> A at the position of the opening 15 of the gusset bag 10. That is, a pair of reinforcing films 7 disposed between the front film 1 and the back film 2 are welded by the reinforcing hot plate 83 to reinforce the position of the opening of the gusset bag 10. Furthermore, a handbag hole 18A is opened by a hot plate 87 for opening in a portion reinforced by the reinforcing film 7 to form a gusset bag 10 having the handbag hole 18A (see FIG. 16).

  A joining mechanism 80 shown in FIG. 17 is a mechanism for forming the sealing chuck 19 on the gusset bag 10 by the chuck strip 8. In the illustrated example, the adhesive tape 9 is disposed on the opening side end of the horizontal gusset film 3 for taking two pieces, and is adhered to the front film 1 and the back film 2 by the reinforcing hot plate 83. Next, the chuck strip 8 is disposed between the front film 1 and the back film 2 and is welded by the chuck hot plate 86. And if it cut | disconnects along the shape of the gusset bag 10 with the hot plate 81 for vertical seals, and the hot plate 82 for horizontal seals, the gusset bag 10 with the sealing chuck 19 will be formed (refer FIG. 19).

  A joining mechanism 80 shown in FIG. 20 is a mechanism for forming the sealing chuck 19 at the opening of the single-piece gusset bag 10. In this case, the adhesive tape 9 is arranged on the opening side end of the single horizontal gusset film 3 and bonded to the front film 1 and the back film 2 by the reinforcing hot plate 83. Next, the chuck strip 8 is disposed between the front film 1 and the back film 2 and is welded by the chuck hot plate 86. And if it cut | disconnects along the shape of the gusset bag 10 with the hot plate 81 for vertical seals, and the hot plate 82 for horizontal seals, the gusset bag 10 with the sealing chuck 19 will be formed (refer FIG. 19). In this case, the width of the back film 2 is half the width of the back film 2 for taking two pieces.

  When the sealing chuck 19 is formed on the gusset bag 10 by the joining mechanism 80, the gusset bag 10 with the header 16 can be formed (see FIGS. 21 and 22). At this time, the gusset bag 10 shown in FIG. 21 is configured such that the sealing chuck 19 is provided on each of the front body portion 11 and the back surface portion 12 and both end portions of the sealing chuck 19 are opened via the lateral gusset portion 13. doing. On the other hand, the gusset bag 10 shown in FIG. 22 is configured such that one end of the sealing chuck 19 is bonded and only one side of the sealing chuck 19 is opened.

  The configuration of the device of the present invention is not limited to the illustration. Furthermore, the design can be freely changed without changing the gist of the present invention.

DESCRIPTION OF SYMBOLS 1 Surface film 1A Cutting edge part 2 Back surface film 2A Extension member 3 Horizontal gusset film 3A Cutting opening 3B Bottom part 4 Bottom film 5 Handpiece piece 6 Bonding film 7 Reinforcement film 8 Zipper strip 9 Adhesive tape 10 Gazette bag 11 Front body part 12 Back surface 13 Horizontal gusset 14 Square bottom 15 Opening 16 Header 17 Flap 18 Hand carry 18A Hand carry hole 19 Sealing chuck 20 Feed mechanism 21 Transport roller 30 Horizontal gusset arrangement mechanism 31 Upper belt 31A Reference gear 31B Moving gear 32 Lower belt 32A Reference Gear 32B Moving gear 33 Slide suction machine 33A Suction port 33B Substrate 33C Slide rail 34 Cutter 35 Feed roller 36 Spot seal device 40 Horizontal gusset temporary fixing mechanism 41 Hot plate for sealing 42 Press stamp 43 Cutter 50 Surface Stopping mechanism 51 Cutter 52 Heating plate for sealing 60 Bottom exposing mechanism 61 Cutter 62 Expanding roller 63 Folding plate 70 Bottom sealing mechanism 71 Closure 72 Hot plate for temporary fixing 80 Joining mechanism 81 Hot plate for vertical sealing 82 Horizontal seal Hot plate 83 Reinforcing hot plate 84 Heating pin 85 Hand carrying device 86 Hot plate for chuck 87 Hot plate for opening 90 Gradient portion 100 Horizontal gusset forming means 110 Cutting step 120 Holding step 130 Conveying step 140 Temporary fixing step 200 Bottom portion forming means 210 Bottom temporary fixing process 220 Adhesive process 300

Claims (7)

After temporarily fixing the horizontal gusset film so that it is perpendicular to the longitudinal direction from the upper side to the upper surface of the belt-like back film transported by the transport roller, the horizontal gusset forming means for overlaying the top film on the top surface of the back film, and the belt-like bottom film In a method for producing a synthetic resin gusset bag having bottom forming means arranged at the bottom side end of the horizontal gusset film, and joining means for joining the horizontal gusset film and the bottom film between the front film and the back film,
The horizontal gusset forming means includes a cutting step of cutting the length of the horizontal gusset film into one or two gusset bags, and lengths of the cut portions of the horizontal gusset film other than the longitudinal ends. A holding step for adjusting and holding, a conveying step for sucking and conveying the longitudinal both ends of the horizontal gusset film held in the holding step onto the back film, and an opening side of the horizontal gusset film for the length of the conveying roller In the state arranged on the side edge side, with a temporary fixing step of temporarily fixing the horizontal gusset film on the back film,
The bottom forming means includes a bottom temporary fixing step of temporarily fixing a surface film on the bottom side of one or two horizontal gusset films, and one or two horizontal gusset films by opening the temporarily fixed surface film. The synthetic resin gusset bag is provided with an adhesive step of opening and folding the bottom side end of the sheet and bonding the bottom film to the folded portion.   In the horizontal gusset forming means, the holding step includes a surface excluding the left and right end portions of the horizontal gusset film between an upper belt and a lower belt configured to be stretchable according to the length of the horizontal gusset film. The method for producing a synthetic resin gusset bag according to claim 1, wherein the synthetic resin gusset bag is held.   The joining means includes a step of folding back an extension member extended from one or both of the longitudinal side edges of the back film to form a header and a flap at the opening of the one or two horizontal gusset films. The method for manufacturing a synthetic resin gusset bag according to claim 1, wherein a header and a flap are provided at an opening of the one or two gusset bags.   In the joining means, a pair of reinforcing films disposed between the front film and the back film are joined to the positions of the openings of the one or two horizontal gusset films, and the hand holes that penetrate the reinforcing films A method for producing a synthetic resin gusset bag according to claim 1, further comprising a step of providing a handbag at an opening of the one or two gusset bags.   The bonding means includes a step of bonding a chuck strip disposed between the front film and the back film to the position of the opening of the one or two horizontal gusset films, The method for producing a synthetic resin gusset bag according to claim 1, wherein a sealing chuck is provided at the openings of the two gusset bags. After temporarily fixing the horizontal gusset film so as to be orthogonal to the longitudinal direction from the upper side to the upper surface of the belt-like back film transported by the transport belt, the surface film is overlaid on the upper surface of the back film, and the belt-like bottom film is placed on the bottom of the horizontal gusset film In the apparatus for manufacturing a synthetic resin gusset bag, which is arranged at the side end and configured to join the horizontal gusset film and the bottom film between the front film and the back film,
A feeding mechanism that moves the front film and the back film along the longitudinal direction with a conveying roller, and an upper belt and a lower belt that are configured to be stretchable according to the length of the horizontal gusset film cut to an arbitrary length, The upper belt and the lower belt are configured to press and hold the surface of the horizontal gusset film except for the left and right ends, and cut into a length of one or two gusset bags. A horizontal gusset placement mechanism for transporting the horizontal gusset film onto the back film;
A horizontal gusset temporary fixing mechanism for temporarily fixing the horizontal gusset film on the back film in a state where the opening side of the horizontal gusset film is arranged on the long side edge side of the back film,
A surface temporary fixing mechanism for temporarily adhering a surface film on one or two horizontal gusset films, and a cut end of the horizontal gusset film by opening the cut end portion of the horizontal gusset film temporarily bonded to the surface film in the width direction. A bottom expression mechanism that folds back each bottom gusset film located at the bottom of the open gusset bag;
A bottom seal mechanism comprising a closing device configured to adhere one bottom film to the bottom portion of one or two horizontal gusset films and to close the bottom portion folded together with the adhered bottom film;
A synthesis characterized by joining a horizontal gusset film and a bottom film to a surface film and a back film, and a joining mechanism for cutting the surface film and the back film along the outline of one or two gusset bags. Production equipment for resin gusset bags.   The horizontal gusset arrangement mechanism includes a pair of slide suction machines for sucking and conveying the longitudinal both ends of the held horizontal gusset film onto the back film, and one of the slide suction machines is a longitudinal one end of the horizontal gusset film. The synthetic resin according to claim 6, wherein the synthetic resin is fixed to the side, and the other slide suction device is movably provided along the other longitudinal end of the horizontal gusset film so as to match the length of the horizontal gusset film. Equipment for manufacturing gusset bags.

Images