JP2005028526A - Rotary type punching device - Google Patents

Abstract

<P>PROBLEM TO BE SOLVED: To provide a rotary type punching device for forming cut lines of which the intervals are different in a flow direction on a rolled laminated film, using one type of die roll formed with a plurality of punching edges. <P>SOLUTION: In this rotary type punching device constituted of the die roll which is formed with the plurality of punching edges on an outer periphery surface at equal intervals in a circumferential direction, and an anvil roll which is disposed so as to face the die roll at prescribed intervals, a metallic sheet having a wider area than a range which is brought into contact with at least one punching edge of the die roll is attached onto the outer periphery surface of the anvil roll. <P>COPYRIGHT: (C)2005,JPO&NCIPI

Description

  The present invention relates to a configuration of an anvil roll in a rotary punching apparatus composed of a die roll and an anvil roll each having a punching blade formed on an outer peripheral surface.

Conventionally, as a rotary punching machine using an anvil roll with an anvil mounted on the outer peripheral surface, a hard rubber urethane system or a similar cushioning material is used to fit the outer peripheral surface of the cylinder with an appropriate thickness. An anvil, which is molded into a cylindrical shape and has mounting pieces bent at both ends in an L shape, is molded into a cylindrical shape in the cylinder of an anvil roll with axial concave grooves engraved at appropriate locations on the circumferential surface. There has been known an anvil roller in a rotary punching machine having a configuration in which an anvil mounting piece is fitted and an anvil holding metal fitting is fitted and fixed to a cylinder (see, for example, Patent Document 1). However, the above-mentioned anvil roller has a configuration in which an anvil formed by cylindrically molding a cushion material having an appropriate thickness made of hard rubber urethane or the like is attached to the entire outer surface of the cylinder, and a predetermined punching blade is provided on the outer peripheral surface. There is a problem that it is impossible to form cuts by changing the interval in the flow direction in the roll-shaped laminated film using one type of formed die roll.
Japanese Utility Model Publication No. 47-1831 (first column, line 36 to second column, line 11)

  An object of the present invention is to use a die roll in which a plurality of punching blades are formed at equal intervals in the circumferential direction on the outer peripheral surface, and a rotary type capable of forming cuts with different intervals in the flow direction in a roll-shaped laminated film. It is to provide a punching device.

  In a rotary punching device comprising a die roll having a plurality of punching blades formed at equal intervals in the circumferential direction on an outer peripheral surface, and an anvil roll disposed to face the die roll at a predetermined interval, the outer periphery of the anvil roll In the rotary punching device, a metal sheet having a larger area than a region in contact with the punching blade is mounted on a surface at a position facing at least one punching blade of the die roll.

  In the above rotary punching device, the punching blade has a linear shape parallel to the axial direction of the die roll.

  In the above rotary punching device, the punching blade is a sewing blade.

  In the above rotary punching device, the metal sheet is configured to be fixed to the outer peripheral surface of the anvil roll by an adhesive tape at an outer peripheral edge portion from a region where the punching blade contacts.

  According to the rotary punching device of the present invention, a metal sheet is mounted on a predetermined area of the outer peripheral surface of the anvil roll, so that at least one punching blade of a plurality of punching blades formed on the die roll can be rolled. Since it is possible to form a cut by half-cut from the outer surface of the laminated film to the depth penetrating the base material layer constituting the roll-shaped laminated film, by changing the position of the metal sheet attached to the anvil roll, one type No. of die rolls can be used to form cuts by half-cuts with different intervals in the flow direction on the roll film.

  Further, by forming a perforation through the perforated film into the base film constituting the roll laminated film by forming the perforated blade as a perforated blade, a base formed with a perforated perforation is formed. By laminating a film to be a material layer and another layer, a roll-shaped laminated film having a cut line can be obtained.

  Furthermore, by using the adhesive tape and fixing the metal sheet to the outer peripheral surface of the anvil roll at the outer peripheral edge portion from the region in contact with the punching blade, the metal sheet can be easily fixed to the outer peripheral surface of the anvil roll. At the same time, since there can be no adhesive tape in the region facing the punching blade of the die roll, adhesion when forming a cut on the roll-shaped laminated film or the film that becomes the substrate layer constituting the roll-shaped laminated film The influence of the tape can be eliminated.

  Hereinafter, embodiments of the present invention will be described with reference to the drawings.

  1 is a side view showing a rotary punching device according to a first embodiment of the present invention, FIG. 2 is an enlarged side view of a portion where a metal sheet is bonded to the outer peripheral surface of an anvil roll in the first embodiment, and FIG. The perspective view of the die roll used for the rotary punching apparatus of 1st Embodiment, FIG. 4 shows the roll-shaped laminated film which formed the cut using the rotary punching apparatus of 1st Embodiment, and its roll-shaped laminated film. The perspective view which shows the bag produced using, FIG. 5 is a side view which shows the rotary punching apparatus of 2nd Embodiment of this invention, FIG. 6 uses the rotary punching apparatus of 2nd Embodiment. It is a perspective view which shows the bag produced using the roll-shaped laminated film and the roll-shaped laminated film which formed the cut, 1, 1 'is an anvil roll, 2a, 2b, 2c is a metal sheet, 3 is a die roll, 4a, 4b, 4c, 4d, 4e, 4f are punching blades, 5 and 5 'are roll-shaped laminated films , 6 is an adhesive tape, 7 is a cut, and 8 and 8 'are bags.

  As shown in FIG. 1, the rotary punching device of the first embodiment of the present invention has six side holes formed on the outer peripheral surface at straight intervals along the circumference in a straight line parallel to the axial direction. The die roll 3 on which the punching blades 4a, 4b, 4c, 4d, 4e, and 4f are formed, and the metal at positions facing the punching blade 4a, the punching blade 4c, and the punching blade 4e of the die roll 3 on the outer peripheral surface. The structure is composed of an anvil roll 1 to which a sheet 2a, a metal sheet 2c, and a metal sheet 2e are bonded. The die roll 3 has six punching blades 4a, 4b, 4c, 4d, 4e, 4f that are linearly spaced along the circumference in the direction parallel to the axial direction on the outer peripheral surface. 1, the metal sheet 2a, the metal sheet 2c, and the metal sheet 2e are bonded only at three positions facing the punching blade 4a, the punching blade 4c, and the punching blade 4e of the die roll 3, and the punching blade 4b , 4d and 4f are not bonded to the metal sheet.

  An enlarged side view of a portion where the metal sheet 2a is bonded to the outer peripheral surface of the anvil roll 1 so as to face the punching blade 4a of the die roll 3 is as shown in FIG. The metal sheet 2a to be bonded to the center is larger by a predetermined dimension in the circumferential direction of the anvil roll 1 than the area facing the punching blade 4a, and the circumference is a certain dimension than the area facing the punching blade 4a. It is set as the structure adhere | attached on the outer peripheral surface of the anvil roll 1 using the adhesive tape 6 in the location outside on the direction. With this configuration, only the metal sheet 2a is present on the outer peripheral surface of the anvil roll 1 at a position facing the punching blade 4a, so that the metal is not affected by the thickness of the adhesive tape 6. By setting the thickness of the sheet 2a to a predetermined thickness, the gap between the punching blade 4a and the metal sheet 2a can be accurately adjusted. Therefore, by adjusting the gap between the punching blade 4a and the metal sheet 2a, it is possible to form a cut having a predetermined depth in the roll-shaped laminated film 5.

  In the rotary punching device of the first embodiment of the present invention, the shapes of the punching blades 4a, 4b, 4c, 4d, 4e, 4f formed on the outer peripheral surface of the die roll 3 are as shown in FIG. The cutting edge is a sewing machine blade, is a straight line parallel to the axial direction of the die roll, and six punching blades 4a, 4b, 4c, 4d, 4e, 4f are formed at equal intervals along the circumference. Consists of configuration. The punching blades 4a, 4b, 4c, 4d, 4e, 4f can form perforated opening cuts in a roll-like laminated film or the like.

  In the rotary punching apparatus of the first embodiment of the present invention, six punching blades 4a, 4b, 4c, 4d, 4e, 4f are formed on the outer peripheral surface of the die roll 3 at equal intervals along the circumference. In addition, three metal sheets 2a, 2c, 2e are bonded to the outer peripheral surface of the anvil roll 1 at positions 3 facing the punching blades 4a, 4c, 4e.

  The roll laminated film 5 formed with the opening cut 7 produced by the rotary punching apparatus of the first embodiment and the bag 8 produced from the roll laminated film 5 are, for example, as shown in FIG. Since the cuts 7 are formed in the roll-shaped laminated film 5 at a relatively narrow interval in the flow direction, the short bag 8 in the vertical direction in which the cuts 7 are formed along the edge of the bag can be produced. Is. If the rotary punching apparatus of 1st Embodiment is used, a cut can be formed in the roll-shaped laminated film 5 by the half cut from an outer surface.

  As shown in FIG. 5, the rotary punching device of the second embodiment of the present invention has six pieces formed at regular intervals along the circumference in a straight line parallel to the axial direction on the outer peripheral surface as shown in FIG. A metal sheet in a position opposite to the die roll 3 on which the punching blades 4a, 4b, 4c, 4d, 4e, and 4f are formed, and the punching blade 4a and the punching blade 4d of the die roll 3 on the outer peripheral surface. 2a and an anvil roll 1 ′ to which a metal sheet 2d is bonded.

  The roll-shaped laminated film 5 ′ formed with the opening cut 7 produced by the rotary punching apparatus of the second embodiment and the bag 8 ′ produced from the roll-shaped laminated film 5 ′ are, for example, FIG. Since the cuts 7 are formed at a relatively large interval in the flow direction in the roll-shaped laminated film 5 ′, the longitudinally long bag 8 ′ in which the cuts 7 are formed along the edge of the bag is as shown in FIG. It is produced. If the rotary punching device of the second embodiment is used, a perforated cut can be formed on the roll-shaped laminated film 5 ′ by half-cut from the outer surface. In addition, after forming a perforated cut through the film to be a base material layer constituting the roll-shaped laminated film 5 ′, the roll-shaped laminated film 5 is formed by laminating other layers to form a perforated cut. 'Can also be made.

  The die roll 3 used in the first and second embodiments has six punching blades 4a, 4b, 4c, 4d, 4e, which are formed in a straight line parallel to the axial direction at equal intervals along the circumference. Although 4f is formed, the number of punching blades formed on the outer peripheral surface of the die roll is arbitrary as long as it is formed at equal intervals along the circumference. In addition, the shape of the punching blade formed on the outer peripheral surface of the die roll is arbitrary, and can be a linear shape, a curved shape, a closed curved shape, etc. in the axial direction of the die roll, and the shape of the cutting edge of the punching blade. As for, a linear shape, a perforated shape, etc. are arbitrary. Regarding the metal sheet to be bonded to the outer peripheral surface of the anvil roll, the metal sheet may be attached by facing the region where the cut is to be formed in the roll-shaped laminated film with the die roll punching blade.

  As a method for forming a cut in a roll-shaped laminated film comprising a base material layer, a gas barrier layer, and a heat-adhesive resin layer, the base material layer, the gas barrier layer, and the heat are formed regardless of the shape of the cutting edge of the punching blade. It can carry out by the method of forming the half cut of the depth which penetrates only a base material layer from the base material layer surface of a roll-shaped laminated film, after laminating | stacking an adhesive resin layer and producing a roll-shaped laminated film. Further, when the punching blade is a perforation blade, a gas barrier layer is formed on the base material layer in which the perforation is formed after the perforation is formed through the film that becomes the base material layer of the roll-shaped laminated film. And a heat-adhesive resin layer may be laminated to produce a roll-shaped laminated film in which cuts are formed.

  As the roll-shaped laminated film, a laminated body composed of a base material layer, a gas barrier layer, and a heat-adhesive resin layer is used. As the base material layer, biaxially stretched films such as biaxially stretched polyethylene terephthalate (PET) and biaxially stretched polypropylene (OPP), or a laminate of these biaxially stretched films and paper can be used. As the gas barrier layer, silica-deposited biaxially stretched polyethylene terephthalate (VMPET), silica-deposited biaxially stretched nylon (VMON), aluminum foil (AL), or the like can be used. As the heat adhesive resin layer, low density polyethylene (LDPE), linear low density polyethylene (LLDPE), ethylene-vinyl acetate copolymer (EVA), unstretched polypropylene (CPP), or the like can be used. The film is laminated by extrusion lamination (EC) such as polyethylene, dry lamination (DL) using a urethane adhesive, or the like. The opening cut is formed so as to penetrate the base material layer. By using paper as the base material layer of the roll-shaped laminated film, the paper becomes a buffer layer when forming a cut by half-cut from the base material layer surface of the roll-shaped laminated film, so that processing is easy. Become.

  By using the rotary punching device of the present invention, it becomes possible to form cuts with different intervals in the flow direction on the roll-shaped laminated film using one type of die roll, It can be used to produce easy-open bags with different vertical dimensions provided at low cost.

The side view which shows the rotary punching apparatus of 1st Embodiment of this invention. The expanded side view of the location which adhere | attached the metal sheet on the outer peripheral surface of the anvil roll in 1st Embodiment. The perspective view of the die roll used for the rotary punching apparatus of 1st Embodiment. The perspective view which shows the bag produced using the roll-shaped laminated film which formed the cut using the rotary punching apparatus of 1st Embodiment, and the roll-shaped laminated film. The side view which shows the rotary punching apparatus of 2nd Embodiment of this invention. The perspective view which shows the bag produced using the roll-shaped laminated film which formed the cut using the rotary punching apparatus of 2nd Embodiment, and the roll-shaped laminated film.

Explanation of symbols

1,1 'anvil roll
2a, 2b, 2c Metal sheet 3 Die roll
4a, 4b, 4c, 4d, 4e, 4f Punching blade 5,5 'Rolled laminated film 6 Adhesive tape 7 Cut 8, 8' Bag

Claims (4)

In a rotary punching device comprising a die roll having a plurality of punching blades formed at equal intervals in the circumferential direction on an outer peripheral surface, and an anvil roll disposed to face the die roll at a predetermined interval, the outer periphery of the anvil roll A rotary punching device, characterized in that a metal sheet having a larger area than a region in contact with the punching blade is mounted on a surface at a position facing at least one punching blade of the die roll. 2. The rotary punching device according to claim 1, wherein the punching blade has a linear shape parallel to the axial direction of the die roll. The rotary punching device according to claim 1 or 2, wherein the punching blade is a sewing machine blade. The rotation according to any one of claims 1 to 3, wherein the metal sheet is fixed to an outer peripheral surface of the anvil roll with an adhesive tape at an outer peripheral edge portion from an area where the punching blade contacts. Type punching device.

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