JP2021010955A - Bag-making apparatus - Google Patents

Abstract

To provide a bag-making apparatus capable of preventing chips produced during a cutting process from attaching to packaging bags and excellent in the packaging bag production efficiency.SOLUTION: Provided is a bag-making apparatus that shear-cuts a film material F having portions 100 corresponding to packaging bags continuing through a margin region ML, with cross-wise end edges of the margin region ML as a first cut line L1 and a second cut line L2, and that performs a notch forming process and a corner cutting process in-line. A notch forming part 120 includes a first notch forming member that forms first notch holes 106 across the first cut line L1, and a second notch forming member that forms second notch holes 107, each independent from the first notch holes 106, across the second cut line L2.SELECTED DRAWING: Figure 1

Description

The present invention relates to a bag making device that manufactures a packaging bag while continuously supplying a resin film material.

Conventionally, a packaging bag made of a flexible packaging material such as a flexible plastic film has been widely used as a container containing foodstuffs, liquid detergents, and the like.
In general, such a packaging bag has a sealing step of sequentially forming a packaging bag equivalent portion by heat-sealing a predetermined area of a film material to be intermittently conveyed, and an opening notch is formed in each packaging bag equivalent portion. The film material is cut at the notch forming process, the corner cut process in which, for example, R processing is performed on the corners of the four corners of each packaging bag, and the cut line set for the adjacent packaging bag. It can be manufactured by carrying out an in-line cutting process for separating the individual packaging bags.

In such a manufacturing method, for example, a corner cut process is performed by punching a film material using a punch and a die and cutting the corners into a corner shape, but the apex of the punched shape is a cut line. If it does not match correctly, there is a problem that a protrusion called "one" is generated.
In response to such a problem, in Patent Document 1, as shown in FIG. 7, the feeding direction of the film material F is set between the adjacent packaging bag corresponding portions 100, 100 (indicated by a white arrow in FIG. 7). A technique for cutting the film material F by shear-cutting at two cut lines L1 and L2 separated from each other has been proposed.

JP-A-2018-199215

Thus, the notch forming process is performed by drilling the notch holes 205 across the two cut lines L1 and L2 using, for example, a punch and a die, so that the film material F is respectively formed. By cutting at the cut lines L1 and L2, the notch 115 of the preceding packaging bag corresponding portion 100 and the notch 115 of the succeeding packaging bag corresponding portion 100 can be formed by one notch hole 205.
However, when the cutting process is performed by the method described in Patent Document 1, as shown in FIG. 7, the margin region portion ML1 on the opening 101 side of the packaging bag 110 and the seal portion 103 side of the packaging bag 110 Cut waste W in a state of being separated from the margin region portion ML2 is generated. Since the cut debris from the margin region portion ML1 on the opening 101 side of the packaging bag 110 is generally small, the cut debris is not reliably sucked and removed by the suction means, but adheres to the packaging bag 110 and is mixed into the product. There is a risk.
The actual situation is that the worker (operator) confirms whether or not the cutting waste adheres to the packaging bag, and there is a problem that the productivity of the packaging bag is lowered.

The present invention solves the above-mentioned problems, and provides a bag making device capable of preventing the cutting waste generated by the cutting process from adhering to the packaging bag and having high production efficiency of the packaging bag. The purpose.

In the bag making device of the present invention, an intermittent feed portion for intermittently feeding a film material in which a portion corresponding to the packaging bag is formed to be continuous through a band-shaped margin region and a notch for opening are formed in the portion corresponding to the packaging bag. The notch forming portion to be formed, the corner cut portion for processing the corner portion corresponding to the packaging bag into a corner shape, and both end edges in the width direction of the margin region are designated as a first cut line and a second cut line, respectively. A bag-making device including a cutting section for shear-cutting a film material and a discharging section for sucking and discharging cutting debris generated in the cutting section. The notch forming section is the first cut line. The configuration includes a first notch forming member that forms a first notch straddling the first notch, and a second notch forming member that forms a second notch independent of the first notch across the second cut line. By doing so, the above problem is solved.

According to the bag making apparatus according to claim 1, when the film material is cut at the first cut line and the margin region remaining in the packaging bag is removed, the cut debris formed by the margin region forms the notch forming portion. It occurs as one without sandwiching and separating. Therefore, the cutting debris generated in the cutting portion can be reliably sucked and removed by the discharging portion, and the cutting debris can be prevented from adhering to the packaging bag.
Further, since the number of workers required for the confirmation work for confirming the presence or absence of the cut waste adhering to the packaging bag can be reduced, the work load can be reduced and high production efficiency can be obtained.

When a notch hole is formed in the notch forming portion in order to form a notch-shaped notch in the obtained packaging bag, the margin region portion on the opening side of the packaging bag becomes smaller, which is a conventional method. Then, the cutting waste generated by the cutting process easily adheres to the packaging bag. However, according to the bag-making device according to claim 2, the above effect can be surely obtained even when a notch-shaped notch is formed.

According to the bag making device according to claim 3, two notch holes independent of each other can be formed in two adjacent packaging bags by a single punching operation, and the notch blade is operated. Since only one drive mechanism is required, the device structure can be simplified.

According to the bag making device according to claim 4, since the punching debris can be blown off by an air flow and removed, it is possible to prevent the punching debris from adhering to the punching blade and other constituent members. , It is possible to prevent the cut debris generated during the processing of the preceding packaging bag from adhering to the packaging bag during the subsequent processing of the packaging bag.

According to the bag making apparatus according to claim 5, the film material is sheared from the edge side to the center side of the margin region in the width direction of the margin region to form two notch holes. The desired notch hole can be reliably formed while leaving the portion that isolates the notch hole.

According to the bag-making apparatus according to claim 6, the first cutting mechanism and the second cutting mechanism are arranged at positions set according to the feed amount of the film material, so that the first cutting line is the first. Alignment with respect to the cutting mechanism and alignment of the second cut line with respect to the second cutting mechanism can be easily and surely performed. Therefore, it is possible to surely prevent the protrusions from being generated at the corners of the packaging bag, and it is possible to prevent the generation of unnecessary cutting debris that can adhere to the packaging bag.

It is a schematic diagram which shows the main part structure in the example of the bag making apparatus of this invention together with the plan view of the film material. It is a top view which shows the state of the corner part of the part corresponding to a packaging bag in a film material after a corner cut process. It is a figure which shows one structural example of the punch for forming a notch used in the bag making apparatus of this invention, (a) the end view seen from the tip side, (b) (a) (C) It is an enlarged view of the surrounding part by a two-dot chain line in (b). It is a figure which shows one structural example of the die for forming a notch used in the bag making apparatus of this invention, (a) plan view, (b) (a) BB line sectional view, (d) (a). It is an enlarged view of the surrounding part by a two-dot chain line in). It is the schematic for demonstrating the notch forming process performed in the bag making apparatus of this invention. It is the schematic for demonstrating the shear cutting process performed in the bag making apparatus of this invention. It is a schematic diagram which shows an example of the shear cut processing in the conventional bag making apparatus.

In the bag making apparatus of the present invention, a film material in which a portion corresponding to a packaging bag formed by sealing a predetermined region of the film material supplied from the raw fabric is continuous at least in the length direction of the film material through a margin region. In a bag making device that manufactures a packaging bag by cutting at a predetermined cut line, the notch forming process and the corner cut process are configured to be performed in-line.
The bag-making apparatus of the present invention may be configured to form a portion corresponding to the packaging bag so as to be continuous in the width direction of the film material to simultaneously manufacture a plurality of packaging bags. The number of packaging bag equivalent parts (number of pieces) arranged in the width direction of the film material is not particularly limited.

The margin region is preferably set within the range of, for example, 1 to 3 mm from the viewpoint of reducing the loss of the film material. Further, when the packaging bag is manufactured by multiple picking, the margin area set between the packaging bag equivalent portions arranged in the width direction of the film material is set between the packaging bag equivalent portions arranged in the length direction of the film material. The size may be the same as or different from the margin area to be formed.

The film material may be a single-layer or multi-layer film made of a resin film, a metal foil, a flexible packaging material such as paper, or a slightly thick sheet-like material.
The form (shape) of the packaging bag formed in the bag making device of the present invention is not particularly limited, and is a so-called standing pouch packaging bag, a flat pouch sealed on all sides, a pouch with a gusset, and the like. , It may be of various forms such as a packaging bag in which three sides of the folded film are sealed.

Hereinafter, embodiments of the present invention will be described with reference to the drawings, taking as an example a packaging bag configured to take two packaging bags from a film material.

FIG. 1 is a schematic view showing a main part configuration in an example of the bag making device of the present invention together with a flat part of a film material.
The film material F has two packaging bag-corresponding portions 100 that are sealed on three sides and have openings on the other side via a band-shaped margin region MW that extends in the width direction of the film material F in the length direction of the film material F. It is formed so as to be continuous and the packaging bag corresponding portion 100 is continuous in the length direction of the film material F through a band-shaped margin region ML extending in the width direction of the film material F. The packaging bag corresponding portion 100 is formed so that the opening 101 faces outward in the width direction of the film material F. In FIG. 1, the seal portion 103 is shaded for convenience.

In the bag making device of the present embodiment, the notch forming processing portion 120 for drilling a notch hole 105 for forming the notch 115 for opening in the packaging bag corresponding portion 100 of the film material F to be intermittently conveyed, and the packaging bag corresponding portion 100. A corner cut processing portion 140 that processes the sharp right-angled corner portions 102 of the four corners into corners 112, and a leather cut processing portion 150 that cuts the film material F in the length direction along a predetermined cut line. , The cutting processing portion 160 that shear-cuts the film material F in the width direction and divides it into individual packaging bags 110, the intermittent feeding portion 155 that intermittently feeds the film material F to the cutting processing portion 160, and the cutting processing portion 160. It is provided with a discharge unit 170 that sucks and discharges the cut waste W generated in. The notch forming processing portion 120, the corner cutting processing portion 140, the leather cutting processing portion 150, and the cutting processing portion 160 are arranged along the transport path of the film material F so as to be arranged in this order in the feed direction of the film material F.

The notch forming processing portion 120 is configured to drill a notch hole 105 in each of two packaging bag corresponding portions 100 adjacent to each other in the length direction of the film material F by punching, and the die 121 and the punching blade are formed. It is provided with a punch 125 for drilling a notch hole 105 in cooperation with the die 121. The punch 125 is arranged so as to face the die 121 with the transport path of the film material F interposed therebetween, and is driven so as to be in contact with and separated from the die 121.
The notch forming portion 120 may be configured to form, for example, a cut notch in the packaging bag corresponding portion 100.

The corner cut processing portion 140 is for R processing the right-angled corner portion 102 of the packaging bag equivalent portion 100 by punching, and is provided with a die 141 and a punching blade and is punched in cooperation with the die 141 to perform corner cut processing. It has 145 and. The punch 145 is arranged so as to face the die 141 with the transport path of the film material F interposed therebetween, and is driven so as to be in contact with and separated from the die 141.
As shown in FIG. 2, the punching blade of the punch 145 in the present embodiment has a cross-shaped or rhombic contour such that the contour of the corner 112 of the packaging bag corresponding portion 100 is, for example, an arc with a circumference of 1/4. .. That is, the punching blade of the punch 145 is in the width direction of the film material F with respect to each of the two packaging bag corresponding portions 100a and 100b and the packaging bag corresponding portions 100a and 100b adjacent to each other in the length direction of the film material F. It is configured so that four corner portions 102 facing each other of two adjacent packaging bag corresponding portions 100c and 100d can be cut at the same time. The punching blade may have a contour such that the contour shape of the corner 112 of the packaging bag corresponding portion 100 is an elliptical arc or another curved arc. The die 141 has a punching edge shape that follows the contour of the punching blade.

The leather cut processing unit 150 cuts the film material F as the film material F is conveyed, with both end edges of the margin region MW as leather cut lines L3 and L4 in the width direction of the film material F, respectively. It includes two razor blades 151 and 151 arranged at the same interval as the size of the margin region MW in the width direction of F.

The intermittent feed unit 155 includes a pair of rolls 156 and 156 that rotationally drive the film material F so as to intermittently convey the film material F while alternately repeating the transfer and the stop of the film material F. In the present embodiment, the pair of rolls 156 and 156 are arranged at positions on the rear side of the cutting portion 160 in the feeding direction of the film material F.

The cutting processing portion 160 has the first cutting mechanism 161 and the first cutting mechanism 161 for cutting the first cut line L1 by setting both end edges of the margin region ML as the first cut line L1 and the second cut line L2, respectively, in the length direction of the film material F. 2 A second cutting mechanism 166 for cutting the cut line L2 is provided. The first cutting mechanism 161 and the second cutting mechanism 166 are set according to the intermittent feed amount of the film material F so that the first cutting mechanism 161 is located on the front side with respect to the feed direction of the film material F. They are arranged at intervals.

The first cutting mechanism 161 and the second cutting mechanism 166 are configured to be displaceable so as to be in contact with and separated from the fixed blades 162 and 167 and the fixed blades 162 and 167, and cooperate with the fixed blades 162 and 167 to form a film material. It is provided with movable blades 163 and 168 for shearing F. The movable blade 163 in the first cutting mechanism 161 and the movable blade 168 in the second cutting mechanism 166 are driven in a state of being synchronized with each other.

Thus, in the bag making device of the present invention, the punching blade in the punch 125 constituting the notch forming processing portion 120 follows the two packaging bag corresponding portions 100 adjacent to each other in the feeding direction of the film material F. A first cutting blade 131 (first notch forming member) for drilling a first notch hole 106 for forming a first notch in a portion corresponding to the packaging bag across the first cut line L1 and a first notch corresponding portion in the preceding packaging bag. It is configured to include a 1-notch hole 106 and a second cutting edge 135 (second notch forming member) that drills a second notch hole 107 that forms a second notch independent of each other across the second cut line L2. ing.

In the bag making device of the present embodiment, as shown in FIGS. 3A to 3C, the punch 125 includes a columnar shank 126 and a punching blade 130 continuous with the tip of the shank 126. The first cutting blade 131 and the second cutting blade 130 are integrally formed so that the punching blade 130 is separated from the feeding direction of the film material F (indicated by the white arrows in FIGS. 3A to 3C). It is composed of a blade 135.
The first cutting edge 131 is configured such that the cutting edge surface 132 is inclined in a direction away from the die 121 toward the front in the feeding direction of the film material F in a cross section perpendicular to the width direction of the film material F. The blade 135 is configured such that the blade edge surface 136 is inclined in a direction opposite to that of the blade edge surface 132 of the first cutting blade 131.

The cutting edge surface 132 of the first cutting edge 131 and the cutting edge surface 136 of the second cutting edge 135 are shaped so that, for example, a hexagonal type (home base type) cutout is formed in the film material F. The shape of the notch hole to be formed (shape of the cutting edge surface) is not particularly limited, and is not limited to I notch (straight cut), U notch (U-shaped cutout), and V notch (V-shaped). It may be a cutout) or the like.

The first cutting edge 131 and the second cutting edge 135 have air blow holes 133 and 137 that open in the cutting edge surfaces 132 and 136, and the respective air blow holes 133 and 137 extend in the axial direction inside the shank 126, respectively. It communicates with the formed air blow flow path 127.

On the other hand, the die 121 for drilling the notch hole 105 in cooperation with such a punch 125 is composed of a cylindrical body whose one end is closed by an end wall 122 as shown in FIGS. 4A to 4C. The outer surface of the end wall 122 functions as a support surface for the film material F.
The end wall 122 is formed with punching blade insertion holes 123 and 124 having an opening shape corresponding to the shape of the punching blade 130 of the punch 125 and forming an edge portion having a sharp opening edge.
The punching blade insertion holes 123 and 124 are the outer peripheral surfaces of the first cutting blade 131 in a state where the first cutting blade 131 and the second cutting blade 135 of the punch 125 are inserted into the corresponding punching blade insertion holes 123 and 124. A predetermined size of clearance between the blade and the inner peripheral surface of one punching blade insertion hole 123, and between the outer peripheral surface of the second cutting blade 135 and the inner peripheral surface of the other punching blade insertion hole 124. Is configured to be formed.

Hereinafter, the operation of the bag making device of the above embodiment will be described.
In the bag making device of the present embodiment, first, in the notch forming processing portion 120, a notch hole 105 is formed at a predetermined position of a packaging bag corresponding portion 100 in the film material F which is intermittently conveyed in a horizontally extending posture, for example. In the process in which the corner 102 of the packaging bag corresponding portion 100 in which the notch hole 105 is formed is R-processed into the corner-shaped corner 112 in the corner-cut processing portion 140, and the film material F passes through the leather-cut processing portion 150. The film material F is cut in the feed direction of the film material F by the shaving blade 151, and then the film material F is cut in the width direction in the cutting processing portion 160, so that the packaging bag 110 having the notch 115 for opening is formed. Manufactured. The punching scraps and cutting scraps generated in the notch forming processing section 120, the corner cutting processing section 140, and the leather cutting processing section 150 are sucked and discharged by a suction / discharge means (not shown).

In the notch forming processing portion 120, the notch forming processing is performed as follows for the packaging bag equivalent portion (hereinafter, referred to as “preceding packaging bag equivalent portion”) located at the head in the feeding direction of the film material F. Is done.
That is, as shown in FIG. 5A, a region including a band-shaped margin region ML set on the front side of the preceding packaging bag corresponding portion 100p and extending in the width direction of the film material F was supported from the lower surface side by the die 121. Be in a state. In this state, by driving the punch 125 in the direction approaching the die 121, the edge portion of the cutting edge surface 132 of the first cutting edge 131 in the punch 125 and the opening of the punching blade insertion hole 123 of the corresponding die 121 The film material F is sheared by the edge, and the first notch hole 106 is formed across the rear edge of the margin region ML set as the first cut line L1 at a position separated from the tip edge of the film material F. Will be done. At this time, by ejecting compressed air from the air blow hole 133 that opens in the blade edge surface 132 of the first cutting blade 131, it is possible to promote the downward bending of the punched portion and to blow the punched dust downward to remove it. ..

Then, when the film material F is intermittently conveyed with a predetermined feed amount, as shown in FIG. 5B, the preceding packaging bag equivalent portion 100p, the preceding packaging bag equivalent portion 100p, and the film material F are adjacent to each other in the feeding direction. A region including a margin region ML between the subsequent packaging bag-corresponding portion (hereinafter, referred to as “subsequent packaging bag-corresponding portion”) 100f is supported by the die 121 from the lower surface side. In this state, by driving the punch 125 in the direction approaching the die 121, the second notch hole 107 paired with the first notch hole 106 formed by the previous notch forming process corresponds to the preceding packaging bag. Along with being formed in the portion 100p, a first notch hole 106 is formed in the portion 100f corresponding to the subsequent packaging bag. That is, with respect to the portion corresponding to the preceding packaging bag 100p, the film material F is formed by the edge portion of the cutting edge surface 136 of the second cutting blade 135 in the punch 125 and the opening edge of the punching blade insertion hole 124 of the corresponding die 121. It is sheared and a second notch hole 107 is drilled across the front edge of the margin region ML set as the second cut line L2. Further, with respect to the subsequent packaging bag equivalent portion 100f, the film material F is formed by the edge portion of the cutting edge surface 132 of the first cutting blade 131 in the punch 125 and the opening edge of the punching blade insertion hole 123 of the corresponding die 121. The first notch hole 106, which is sheared and is independent of the second notch hole 107 of the preceding packaging bag equivalent portion 100p, is bored across the rear edge of the margin region ML set as the second cut line L1. ..

When the film material F is cut in the width direction at the cutting processing portion 160, a margin region ML is generated as cut waste. However, in the film material F subjected to the notch forming processing as described above, as shown in FIG. In addition, the margin region portion ML1 on the opening 101 side of the packaging bag 110 with respect to the notch hole forming portion N and the margin region portion ML2 on the sealing portion 103 side of the packaging bag 110 with respect to the notch hole forming portion N are integrated. Cut waste W is generated. Therefore, according to the bag-making device of the present embodiment, the cut waste W generated in the shear-cut processing by the cutting processing unit 160 can be reliably sucked and removed, and the cut waste W can be surely attached to the packaging bag 110. Can be prevented.

Although one embodiment of the present invention has been described above, the present invention is not limited to the above embodiment, and the notch forming processed portion forms the first notch across the first cut line. Any other specific configuration is provided as long as it includes a member and a second notch forming member that forms a second notch independent of the first notch across the second cut line. May be good.

Hereinafter, examples carried out for confirming the effects of the present invention will be described.

[Example 1]
With reference to the configuration shown in FIG. 1, the film material (F) is shear-cut in the width direction at two cut lines (L1, L2) set in the portion corresponding to the adjacent packaging bag and separated in the feeding direction of the film material. A cutting-type bag making device was manufactured. The punching device constituting the notch forming processing portion (120) includes a punch (125) having a punching blade (130) including a first cutting blade (131) and a second cutting blade (135).
A total of 2 million bags of various types shown below were manufactured by this bag making device, and the total number of cut wastes adhering to the packaging bags was examined. As a result, in all types of packaging bags, the cut wastes were found. No adhesion was confirmed.
[Bag size (width x height x bottom material fold width)]
Type A: 110 mm x 160 mm x 31 mm (3 pieces)
Type B: 130 mm x 180 mm x 36 mm (3 pieces)
Type C: 100 mm x 160 mm x 20 mm (3 pieces)
Type D: 120 mm x 180 mm x 33 mm (3 pieces)
Type E: 90 mm x 140 mm x 28 mm (3 pieces)
Type F: 200 mm x 290 mm (2 picks)

[Comparative Example 1]
The same as the bag making device produced in Example 1 except that a punching device having a punching blade for forming a hexagonal notch hole was used as the punching device constituting the notch forming processed portion. A bag making device for comparison having a structure was produced.
A total of 2 million packaging bags were manufactured by this comparative bag making device in the same manner as in Example 1, and the total number of cutting chips adhering to the packaging bags was examined. Was confirmed to exceed 7,000.
The reason for this is not clear in detail, but it is considered that the cut debris generated in the shear cutting process at the second cut line is soared due to the influence of static electricity, friction, air retention, or the like.

100 ・ ・ ・ Packaging bag equivalent part 100a, 100b, 100c, 100d ・ ・ ・ Packaging bag equivalent part 100p ・ ・ ・ Advance packaging bag equivalent part 100f ・ ・ ・ Subsequent packaging bag equivalent part 101 ・ ・ ・ Opening 102 ・ ・ ・Corner 103 ・ ・ ・ Seal 105, 205 ・ ・ ・ Notch hole 106 ・ ・ ・ First notch hole 107 ・ ・ ・ Second notch hole 110 ・ ・ ・ Packaging bag 112 ・ ・ ・ Corner 115 ・ ・ ・Notch 120 ・ ・ ・ Notch forming part 121 ・ ・ ・ Die 122 ・ ・ ・ End wall 123 ・ ・ ・ Punching blade insertion hole 124 ・ ・ ・ Punching blade insertion hole 125 ・ ・ ・ Punch 126 ・ ・ ・ Shank 127 ・・ ・ Air blow flow path 130 ・ ・ ・ Punching blade 131 ・ ・ ・ 1st cutting blade 132 ・ ・ ・ Cutting edge surface 133 ・ ・ ・ Air blow hole 135 ・ ・ ・ 2nd cutting blade 136 ・ ・ ・ Cutting edge surface 137 ・ ・ ・Air blow hole 140 ・ ・ ・ Corner cut processing part 141 ・ ・ ・ Die 145 ・ ・ ・ Punch 150 ・ ・ ・ Leather cut processing part 151 ・ ・ ・ Shaving blade 155 ・ ・ ・ Intermittent feed part 156 ・ ・ ・ Roll 160 ・ ・ ・Cutting part 161 ・ ・ ・ First cutting mechanism 162 ・ ・ ・ Fixed blade 163 ・ ・ ・ Movable blade 166 ・ ・ ・ Second cutting mechanism 167 ・ ・ ・ Fixed blade 168 ・ ・ ・ Movable blade 170 ・ ・ ・ Discharge part F・ ・ ・ Film material L1 ・ ・ ・ 1st cut line L2 ・ ・ ・ 2nd cut line L3, L4 ・ ・ ・ Leather cut line MW ・ ・ ・ Margin area ML ・ ・ ・ Margin area ML1 ・ ・ ・ Margin area part ML2・ ・ ・ Margin area part N ・ ・ ・ Notch hole forming part W ・ ・ ・ Cut waste

Claims (6)

An intermittent feed portion for intermittently feeding a film material in which a portion corresponding to the packaging bag is continuously formed through a band-shaped margin region, a notch forming portion for forming a notch for opening in the portion corresponding to the packaging bag, and the above. A corner-cutting part that processes the corners of the part corresponding to the packaging bag into a corner shape, and a cutting process that shear-cuts the film material with both end edges in the width direction of the margin area as the first cut line and the second cut line, respectively. A bag-making device provided with a portion and a discharge portion for sucking and discharging cut waste generated in the cutting processing portion.
The notch forming processing portion forms a first notch forming member that forms the first notch across the first cut line and a second notch that is independent of the first notch across the second cut line. A bag making device including a second notch forming member. The notch forming portion comprises a punch having a punching blade that cooperates with a die to drill a notch hole for forming the notch.
The punching blade includes a first cutting blade that drills a hole for a first notch that forms the first notch, and a second cutting blade that drills a hole for a second notch that forms the second notch. The bag making device according to claim 1. The bag-making device according to claim 2, wherein the punching blade is integrally formed by separating the first cutting blade and the second cutting blade in the feeding direction of the film material. .. The bag-making device according to claim 2 or 3, wherein the first cutting edge and the second cutting edge have an air blow hole that opens in the cutting edge surface. The first cutting edge is configured such that in a cross section perpendicular to the width direction of the film material, the cutting edge surface is inclined in a direction away from the die toward the front in the feeding direction of the film material, and the second cutting edge is formed. The bag-making device according to any one of claims 2 to 4, wherein the blade is configured such that the cutting edge surface is inclined in a direction opposite to that of the cutting edge surface of the first cutting blade. The cutting processing portion is located on the rear side of the first cutting mechanism with respect to the feeding direction of the film material and the first cutting mechanism for cutting the first cut line, and the second cutting for cutting the second cut line. Equipped with a mechanism
The first cutting mechanism and the second cutting mechanism are configured to be displaceable so as to be in contact with and separated from the fixed blade, and the movable blade that shears the film material in cooperation with the fixed blade. Prepare,
The method according to any one of claims 2 to 5, wherein the movable blade in the first cutting mechanism and the movable blade in the second cutting mechanism are driven in a state of being synchronized with each other. Bag making device.

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