JP2020097110A - Punching scrap removal female die - Google Patents

Abstract

To provide a punching scrap removal female die which can easily perform processing for forming a vent hole or the like for removal of a punching scrap in a substrate by use of, for example, a cutter knife or the like, which can be inexpensively manufactured while assuring a physical strength thereof, and which can be easily assembled without breaking the substrate.SOLUTION: A punching scrap removal female die 1 comprises: a substrate 2 which supports parts other than a part which becomes a punching scrap in a material sheet when pulling out and removing the punching scrap from the material sheet after punching; a leg member 3 which supports the substrate 2; and a fastening tool 4 which fastens the substrate 2 and the leg member 3. In the punching scrap removal female die, the substrate 2 is so configured in such a manner that paper sheets 6, which form a plate surface on both of front and rear surfaces of an intermediate layer comprising a tabular honeycomb core 5 made of paper, and a collar member, which regulates a fastening amount of the fastening tool 4, is provided.SELECTED DRAWING: Figure 1

Description

BACKGROUND OF THE INVENTION 1. Field of the Invention The present invention relates to a punching scrap removal female die suitable for use in removing a portion that becomes a scrap when a blank such as a paper container is manufactured by punching a material sheet such as a corrugated board and a paperboard.

When a blank such as a paper container is manufactured by punching out a material sheet such as a corrugated board or a paperboard, the material sheet is first punched to obtain a punched product (blank) having a desired shape. In this punching process, a notch is formed between the part that becomes the product and the part that becomes the scrap to be removed. In addition, when the portion to be the scrap is large, the portion to be the product and the portion to be the scrap are connected by the narrow connecting portion provided at an appropriate interval, and the portion to be the scrap is small. Is retained at the punched part as it is due to the catch between the part which becomes the scrap and the surrounding part.

After the punching process is performed, a punching dust removing step of removing a portion to be a scrap from the material sheet is performed. In this punching scrap removal step, a material sheet is placed between the punching scraps removing male die (upper die) and the punching scraps removing female die (lower die), and the upper die is lowered with respect to the lower die. A punching scrap removing tool provided in the mold is used to push out a portion serving as a scrap from the material sheet (see Patent Documents 1 to 3).

JP, 2001-300897, A JP 2004-17189 A Registered utility model No. 3183627

Generally, a punching scrap removal female die supports a portion of a material sheet other than a portion to be a punching scrap, and a leg member that supports the substrate at a predetermined position when the punching scrap removal female die is mounted on a punching scrap removing device. And a fastener for fastening the substrate and the leg member.

By the way, the substrate in the conventional punching scrap removal female mold uses a plywood which is excellent in physical strength but relatively expensive as a constituent material, and the processing for forming a punching hole or the like for punching scraps in the substrate is performed by a laser cutting device. Is performed by thermal cutting with laser light. For this reason, there is a problem that the material cost and the processing cost are high, and when the number of lots is small, it cannot be manufactured at low cost, and it cannot be applied to small lot production.

The present invention has been made in view of the problems as described above, and the process of forming a hole or the like for extracting scraps on the substrate can be easily performed using, for example, a cutter knife, and the physical PROBLEM TO BE SOLVED: To provide a punching scrap removing female mold which can be manufactured at a low cost while securing a mechanical strength, is suitable for disposal, can be easily recycled, and can be easily assembled without damaging a substrate. The purpose is.

In order to achieve the above object, the punching scrap removing female mold according to the present invention comprises:
When removing the scraps from a material sheet in which a notch is formed between a product part and a scrap part to be removed by punching, the scraps in the material sheet are removed. In a punching scrap removal female die including a substrate supporting a portion other than a portion to be a substrate, a leg member supporting the substrate, and a fastener for fastening the substrate and the leg member,
The substrate is made of paper and has a plate-shaped honeycomb core as an intermediate layer, and paper sheets forming plate surfaces are bonded to both front and back surfaces of the intermediate layer, and the tightening amount for controlling the tightening amount of the fastener is controlled. It is characterized in that a coating amount regulating member is provided.

According to the punching scrap removal female mold of the present invention, the substrate that supports the portion other than the cutting scraps in the material sheet is made of paper and has a plate-shaped honeycomb core as an intermediate layer, and forms a plate surface on both front and back surfaces of the intermediate layer. Since it is supposed to be made by pasting sheet-made sheets, it is possible to easily perform the process of forming punch holes etc. on the substrate for pulling out scraps, for example, using a cutter knife, etc., while ensuring the physical strength. At the same time, the material cost can be kept low, the manufacturing cost can be low, and the material can be easily disposed of for recycling. Further, since the tightening amount regulating member that regulates the tightening amount of the fastener that fastens the substrate and the leg member is provided, the tightening operation can be performed without worrying about the excessive tightening amount. Further, since the tightening amount restricting member regulates the tightening amount to a predetermined amount, an excessive tightening force does not act on the substrate, and the substrate can be easily assembled without damage. Therefore, the punched-dust-removing female mold of the present invention can be used for small-lot production.

It is a figure which shows the punching waste removal female mold|die which concerns on one Embodiment of this invention, (a) is a top view, (b) is a front view, (c) is a bottom view. It is a figure which illustrates the cross section of a honeycomb core. FIG. 2 is an enlarged view of part A of FIG. 3 is a cross-sectional view taken along the line BB of FIG. 3, in which (a) is a mode view in which a collar member is used as a tightening amount control member, and (b) is a mode view in which a nut portion of a claw nut is used as a tightening amount control member. Is.

Next, specific embodiments of the punching scrap removing female die according to the present invention will be described with reference to the drawings.

<Outline of punching scrap removal female mold>
The punching scrap removal female die 1 shown in FIGS. 1A to 1C has a notch formed between a portion to be a product and a portion to be a scrap to be removed by punching. The substrate 2 that supports a portion of the material sheet other than the portion to be the scrap when the scrap is extracted from the material sheet, the pair of leg members 3 that support the substrate 2, the substrate 2 and the leg member 3 are provided. The fastener 4 for fastening is provided.

<Explanation of substrate>
The substrate 2 is made of a plate-shaped honeycomb core 5 made of paper as an intermediate layer, and a paper sheet 6 forming a plate surface is bonded to both front and back surfaces of the intermediate layer, and the plate surface is arranged in the vertical direction. ing. The substrate 2 is provided with a required punch hole 7 at a predetermined position so that a portion to be a scrap to be removed passes through.

Here, the plate-shaped honeycomb core 5 is a plate-shaped member in which a myriad of tubular parts are formed adjacent to each other in the outer peripheral direction, and a cross section parallel to the plate surface is formed into a honeycomb shape. The material is not limited to the one that penetrates, but may include the one that is closed on both sides. Thus, by using a so-called paper honeycomb board composed of the paper-made honeycomb core 5 and the paper-made sheet 6 as the constituent material of the substrate 2, it is possible to reduce the cost and weight while ensuring the physical strength. it can.

The honeycomb core 5 is not limited to a cross section having a set of triangles used in the present embodiment, a cross section having a set of circles (see FIGS. 2A and 2B), and a corrugated cross section. Some of them (see FIGS. 2C and 2D), ones having a cross section of hexagons (see FIG. 2E), and the like are included.

The honeycomb core 5 only needs to have the surfaces forming the tubular portions perpendicular to the surfaces of the paper sheets 6 attached to the front and back surfaces, and each tubular portion does not necessarily have to be formed. It does not need to be stuck to each other, and they may exist separately or in blocks. In addition, the size and shape of the tubular portion may be different, or the bent strips may have a shape in which they are adhered to each other at arbitrary points on the strip surface. In order to obtain the same, it is preferable that the cylindrical portions have the same size and shape, and that they closely adhere to each other. Further, each of the tubular portions may be fine or large, but in order to increase the strength of the substrate 2 and improve the adhesiveness with the paper sheet 6, It is preferable to reduce the bottom area of each tubular portion and increase the thickness of the material forming each tubular portion.

<Explanation of leg members>
As shown in FIG. 3, the leg member 3 includes a long side flange portion 11 in contact with the lower plate surface of the substrate 2, a short side flange portion 12 facing the long side flange portion 11, and these flange portions 11, 12 has a web portion 13 connecting one end portions of the flange portions 11 and 12 so as to form a right angle, and an opening portion 14 defined by the long side flange portion 11, the short side flange portion 12 and the web portion 13. ing. In the present embodiment, as the leg member 3, for example, a long side flange portion 11, a short side flange portion 12, and a web portion 13 are integrally molded so as to be continuous, for example, an aluminum material, an iron material, or the like having one-sided and unequal-sided cross-sectional shapes. Uses a channel material with a square shape. The pair of leg members 3 are arranged in parallel at predetermined intervals with the openings 14 thereof facing outward (see FIGS. 1B and 1C).

<Explanation of fasteners>
As shown in FIG. 4( a ), the fastener 4 includes a nut 21 with a claw and a wing bolt 22.

The claw nuts 21 are embedded in a required number of boards 2 in a predetermined arrangement so as to correspond to a predetermined portion of the board 2 with which the long side flange portion 11 of the leg member 3 comes into contact. The claw nut 21 is provided with a cylindrical nut portion 21a, a flange portion 21b integrally provided on one end side of the nut portion 21a, and a protruding portion from the plunge portion 21b so as to be arranged around the nut portion 21a in a predetermined arrangement. And a plurality of (four) claws 21c that are formed so that the plurality of claws 21c bite into the inside of the substrate 2 from the upper plate surface side of the substrate 2 so as not to be rotated when tightening the butterfly bolt 22. A reaction force against the tightening force can be secured on the substrate 2.

The butterfly bolt 22 is formed by integrally connecting an axially threaded shaft portion 22 a and a butterfly-shaped head portion 22 b having a shape like a butterfly blade, and the shaft portion 22 a of the leg member 3. The male screw of the shaft portion 22 a penetrates the long side flange portion 11, the male screw of the shaft portion 22 a is screwed into the nut portion 21 a of the nut 21 with the pawl, and the butterfly head 22 b is in contact with the long side flange portion 11 of the leg member 3. It is possible to fasten the substrate 2 and the leg member 3 or to release the fastening, by manually grasping the butterfly-shaped head 22b with fingers.

<Explanation of restriction member>
As shown in FIG. 4A, when the height dimension H of the claw nut 21 is smaller than the thickness dimension T of the substrate 2, the nut portion 21 a of the claw nut 21 and the long side flange portion of the leg member 3 are. 11, the nut portion 21a is not in contact with the long side flange portion 11 before tightening the fastener 4, so that when the wing bolt 22 is tightened, the nut portion 21a abuts the long side flange portion 11. A squeezing force that crushes the substrate 2 acts between the flange portion 21b and the long side flange portion 11, and the substrate 2 may be damaged. In order to prevent such a problem in advance, between the flange portion 21b of the nut 21 with a claw and the long side flange portion 11 of the leg member 3, a cylindrical shape that can be externally fitted and mounted on the nut portion 21a of the nut 21 with a claw. The collar member 25 is provided, and the collar member 25 functions as a tightening amount restricting member that restricts the tightening amount of the fastener 4.

In the collar member 25, a flange portion which is flush with the upper plate surface of the substrate 2 from the other end of the collar member 25 in a state where one end of the collar member 25 is abutted against the flange portion 21b of the nut 21 with a claw. The length dimension of the collar member 25 is determined so that the distance L to the end face of 21b is equal to the thickness dimension T of the substrate 2, and the collar member 25 is attached to the long side flange portion 11 of the leg member 3 with the fastener 4. It is designed to abut before tightening.

As shown in FIG. 4B, when the height dimension H′ of the claw nut 21 is the same as the thickness dimension T of the substrate 2, the nut portion 21 a ′ of the claw nut 21 is longer than the leg member 3. Since the side flange portion 11 is brought into contact with the fastener 4 before the fastener 4 is tightened, the nut portion 21 a ′ functions as a tightening amount regulation member that regulates the tightening amount of the fastener 4.

According to the punching dust removal female mold 1 of the present embodiment as described above, the substrate 2 supporting the portion of the material sheet other than the punching dust has the paper-shaped plate-like honeycomb core 5 as the intermediate layer and the intermediate layer. Since the paper sheet 6 forming the plate surface is attached to both front and back sides of the above, it is easy to perform the process of forming the punching holes 7 and the like on the substrate 2 for removing the scraps by using, for example, a cutter knife or the like. In addition to being able to perform the above, the material cost can be kept low while ensuring the physical strength, the manufacturing cost can be low, and the material can be easily disposed of for recycling. Further, since the collar member 25 that regulates the tightening amount of the fastener 4 that fastens the substrate 2 and the leg member 3 is provided, the tightening operation can be performed without worrying about the excessive tightening amount. Since the collar member 25 regulates the tightening amount to a predetermined amount, an excessive tightening force does not act on the substrate 2, and the substrate 2 can be easily assembled without damage. Therefore, the punched-dust-removing female die 1 of this embodiment can be used for small-lot production.

As described above, the punching dust removing female mold of the present invention has been described based on the embodiment, but the present invention is not limited to the structure described in the above embodiment, and the structure thereof is appropriately changed without departing from the spirit thereof. Can be changed.

INDUSTRIAL APPLICABILITY The punching scrap removal female die of the present invention can easily perform processing for forming a punch hole or the like on the substrate using a cutter knife or the like, and at a low cost while ensuring physical strength. Suitable for multi-product, small-lot production because it has characteristics that it can be manufactured, is suitable for disposal, can be easily recycled, and can be easily assembled without damaging the board. It can be suitably used for the application of the punched chip removing female mold. It has high industrial applicability.

1 Cutting Die Removal Female Model 2 Board 3 Leg Member 4 Fastener 5 Honeycomb Core 6 Paper Sheet 21 Claw Nut 22 Butterfly Bolt 25 Color Member (Tightening Amount Control Member)

Claims (1)

When removing the scraps from a material sheet in which a notch is formed between a product part and a scrap part to be removed by punching, the scraps in the material sheet are removed. In a punching scrap removal female die including a substrate supporting a portion other than a portion to be a substrate, a leg member supporting the substrate, and a fastener for fastening the substrate and the leg member,
The substrate is made of paper and has a plate-shaped honeycomb core as an intermediate layer, and paper sheets forming plate surfaces are bonded to both front and back surfaces of the intermediate layer, and the tightening amount for controlling the tightening amount of the fastener is controlled. A female die for punching scrap removal, characterized in that an amount regulating member is provided.

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