JPH1094839A - Method and device for punching of plate - Google Patents

Abstract

PROBLEM TO BE SOLVED: To conduct punching with a die partially changed by mounting a cutting edge to a lower die main body by selecting the cutting edge block being a kind of the shape of a plate to be punched and blocking the relative movement of a presser with respect to a upper die main body corresponding to the cutting edge demounted from the lower die. SOLUTION: Cutting blocks 5, 6 are fixed to a lower die main body 3, other cutting edge blocks are demounted from the lower die main body 3. On the other hand, a spacer 21 is arranged between a presser 10 and an upper die main body 9, a relative movement of the presser 10 with respect to the upper die main body 9 is blocked. In this state, a plate is set on the cutting blocks 5, 6, by descending the upper die, the plate 28 having a shape corresponding to that of the cutting edge blocks 5, 6 is punched by the cutting edge of the outer periphery of the cutting edge blocks 5, 6, the presser 10 and an upper die cutting edge. By this method, punching is coped well without increasing the number of sets of upper die and lower die, the production cost is reduced as well.

Description

DETAILED DESCRIPTION OF THE INVENTION

[0001]

BACKGROUND OF THE INVENTION 1. Field of the Invention The present invention relates to a method and an apparatus for punching plate materials for punching plate materials having a plurality of shapes.

[0002]

2. Description of the Related Art Conventionally, it has been known to use a punching die composed of an upper die and a lower die in order to punch a plate of a required shape from a large plate. (See, for example, JP-A-7-32063)

[0003]

However, when a plurality of types of plate materials are punched, a large number of sets of upper and lower dies corresponding to the number of types are required, so that the manufacturing cost of the die is high. In addition, every time the type of shape is changed, it is necessary to replace the entire upper die and lower die, and there is a disadvantage that a large space is required for the place for placing the die.

The present invention has been made in view of the above circumstances, and an object of the present invention is to make it possible to perform punching of a plurality of types of plate materials by changing a part of a mold. It is in.

[0005]

In order to achieve the above object, an invention according to claim 1 is a method of punching a plate material having a plurality of shapes, the method comprising a plurality of plates having a cutting edge at an upper corner. A lower die having a cutting blade block detachably attached to the lower die main body, and a presser having a shape corresponding to each cutting blade block of the lower die and having a cutting blade at a lower corner portion are vertically elastically attached to the upper die main body. Prepare the supported upper die and select the cutting blade block so that it will be the type of plate material to be punched, attach it to the lower die main body, and press the upper die of the presser corresponding to the cutting blade block removed from the lower die The punching shape is set by preventing relative movement with respect to the main body, and the plate material is punched out using the upper die and the lower die having the punching shape set as described above.

[0006] In the case of the above configuration, the cutting blade block is selected so as to be the type of the plate material to be punched, and is attached to the lower die body to set the punching shape of the lower die. By setting the punching shape of the upper die by preventing relative movement of the presser corresponding to the blade block with respect to the upper die body, the setting of the die is completed. This results in a punching die that matches the shape of the plate to be punched. In the case of punching a plate of another shape, it can be achieved by changing the attachment or removal of some of the cutting blade blocks and changing the position of the presser that prevents movement with respect to the upper die body. it can.

According to a second aspect of the present invention, as a method of preventing relative movement of the presser with respect to the upper die body according to the first aspect of the present invention, a spacer is disposed between the upper die body and the presser. .

In the case of the above configuration, the setting of the punching shape on the upper die side in the first aspect of the present invention is specifically specified.
That is, in order to set the upper die corresponding to the lower die that is selected and attached to the cutting blade block so as to be the type of the shape of the plate material to be punched, by disposing the spacer between the upper die body and the presser, The relative movement of the presser with respect to the upper mold body is prevented, and the cutting blade at the lower part of the presser can be used as the upper cutting edge.

According to a third aspect of the present invention, the upper die of the first aspect is provided with a cutting blade surrounding the outer periphery of the presser. In the case of the above configuration, the configuration of the upper die in the first aspect of the invention is specifically specified. That is, by changing the type of the plate material by changing the shape of the plate material by changing the presser only to prevent the relative movement with respect to the upper mold body by changing the shape of the plate material by fixedly providing the outermost cutting edge of the cutting blade block to the upper mold. It is possible to respond by.

According to a fourth aspect of the present invention, there is provided a punching device for punching a plurality of types of plate materials, wherein a plurality of cutting blade blocks each having a cutting blade at an upper corner portion are detachably provided on a lower die body. The lower die, the upper die having a shape corresponding to each cutting blade block of the lower die, and a presser having a cutting blade at a lower corner portion elastically supported vertically in the upper die body, and removed according to the punching shape. And a means for preventing relative movement of the presser corresponding to the cutting blade block to the upper die body. In the case of the above configuration, the specific configuration of the plate material punching apparatus according to the first aspect of the present invention is specified.

[0011]

Embodiments of the present invention will be described below with reference to the drawings. FIG. 1 shows a punching device for performing a method of punching a plate material according to an embodiment of the present invention,
It is composed of an upper mold 1 and a lower mold 2. The lower die 1 includes a lower die main body 3 and a plurality of cutting blade blocks 4, 5, 6, 7 detachably provided on the lower die main body 3. The plurality of cutting blade blocks 4, 5, 6, and 7 are provided adjacent to each other, and are configured to cut a plurality of plate materials by a combination thereof. A cutting blade 8 is provided at the upper corner of each of the cutting blade blocks 4, 5, 6, and 7, and the cutting blade blocks 4, 5, 6, and 7 can be attached to and detached from the lower die body 3 by fixing means (not shown). It has become.

The upper die 1 comprises an upper die body 9 and pressers 10, 1
The upper die cutting edge 14 surrounds the outer periphery of the presser fixed to the upper die body 9. Pressa 1
Reference numerals 0, 11, 12, and 13 respectively have shapes corresponding to the lower cutting blade blocks 4, 5, 6, and 7 and have a cutting blade 15 at a lower corner. Presser 10 is the guide post 1
6, 17 and 18 support the upper die body 9 so as to be movable up and down relatively. As shown in FIG. 6, the guide post 17 has a collar 19 for regulating the lowering limit of the presser 10.
Is provided. A spring 20 is contracted between the presser 10 and the upper die body 9, and this structure elastically supports the presser 10 with respect to the upper die body 9. The pressers 11, 12, 13 are also supported by the upper die body 9 with the same configuration as the presser 10.

The pressers 10, 11, 12,
The insertion hole 22 of the spacer 21 shown in FIG.
Is provided. The spacer 21 has a spring 2 at its tip.
0 and a mounting flange 24 for the upper die body 9. This spacer 21
Is arranged between each of the pressers 10, 11, 12, 13 and the upper die body 9 to prevent compression of the spring 20 and prevent relative movement of the pressers 10, 11, 12, 13 with respect to the upper die body 9. . 2 and FIG.
5 and 26 are guide portions of the lower mold 2 and the upper mold 1.

Hereinafter, a method of punching a plurality of plate members having the above-described configuration will be described. First, in FIG. 1, when punching a plate material having a shape corresponding to the outer periphery of the cutting blade blocks 4, 5, 6, and 7,
5, 6, 7 are attached to the lower mold body 3, and the spacer 21 is not used at all. In this state, the cutting blade blocks 4, 5, 6, 7
When a large plate material is set on the upper die 1 and the upper die 1 is lowered, the plate material is held by the pressers 10, 11, 12, 13 and the outer periphery of the cutting blade blocks 4, 5, 6, 7 by the lowering of the upper die 1 thereafter. The plate 27 can be punched by the cutting blade 8 and the upper cutting blade 14.

Next, when the plate material is punched into a shape in which the cutting block 5 and the cutting block 6 are combined, the cutting block 5 and the cutting block 6 are fixed to the lower die body 3 and the cutting block 4 is fixed. Then, the cutting blade block 7 is removed from the lower die body 3.
On the other hand, spacers 21 are arranged between presser 10 and upper die body 9 and between presser 13 and upper die body 9,
0 and the presser 13 prevent relative movement with respect to the upper die body 9.

In this state, when a plate material is set on the cutting blade blocks 5 and 6 and the upper die 1 is lowered, the cutting blade 8 on the outer periphery of the cutting blade blocks 5 and 6, the presser 10 and the cutting blade 15 of the presser 13
The plate 28 having a shape corresponding to the shape of the cutting block 5 or 6 can be punched by the upper cutting blade 14 and the upper die 14.

Similarly, in the case of punching a plate material having a shape in which the cutting blade blocks 4, 5, and 6 are combined, the cutting blade block 7
Only the upper mold body 9 can be removed by removing only the lower mold body 3 from the presser 13 and the upper mold body 9.
Similarly, other shapes can be obtained by a combination of a cutting blade block and a presser on which the spacer 21 is arranged.

[0018]

As described above, according to the plate material punching method according to the first aspect of the present invention, the cutting blade block is attached to the lower die body so that the shape of the plate material to be punched is different. The presser corresponding to the cutting blade block removed from the upper die body is prevented from moving relative to the upper die body, so that the punching shape is set. And the change of the presser to prevent movement can be achieved. For this reason, it is possible to cope with the change of the plate material to be punched without increasing the number of sets of the upper die and the lower die, thereby reducing the manufacturing cost. Further, since the change does not replace the entire mold, the change can be easily made.
Further, since the removed cutting blade block may be stored outside the mold, the storage space can be significantly reduced as compared with the case where a plurality of sets of the upper mold and the lower mold are provided.

According to the second aspect of the present invention, prevention of relative movement of the presser with respect to the upper mold body in the first aspect of the present invention can be easily achieved by the spacer disposed between the upper mold body and the presser. Can be.

According to the third aspect of the present invention, since the upper die is provided with the cutting edge surrounding the outer periphery of the fresher, the change of the upper die cutting edge can be dealt with only by the change of the presser for preventing the relative movement with respect to the upper die main body. be able to. According to the fourth aspect of the present invention, it is possible to obtain a specific plate material punching apparatus having the same effect as the plate material punching method according to the first aspect.

[Brief description of the drawings]

FIG. 1 is a front view showing a plate material punching device according to an embodiment of the present invention.

FIG. 2 is a plan view of a lower die in FIG.

FIG. 3 is a bottom view of the upper die in FIG. 1;

FIG. 4 is a front view showing an operation when punching a plate material having a shape different from that of FIG. 1;

FIG. 5 is a plan view of a spacer that can be arranged between the upper die body and the presser.

FIG. 6 is an enlarged sectional view showing the structure of the presser.

[Explanation of symbols]

 DESCRIPTION OF SYMBOLS 1 Upper die 2 Lower die 3 Lower die main body 4,5,6,7 Cutting blade block 8 Cutting blade 9 Upper die main body 10,11,12,13 Presser 14 Upper die cutting blade 15 Cutting blade 20 Spring 21 Spacer

Claims (4)

[Claims] 1. A method of punching a plate material of a plurality of shapes, comprising: a lower die having a plurality of cutting blade blocks having cutting blades at upper corner portions detachably provided on a lower die body; Prepare a presser that has a shape corresponding to each cutting blade block of the lower die and has a cutting edge at the lower corner that is elastically supported in the vertical direction on the upper die body, and it becomes the type of plate material to be punched Select the cutting blade block and attach it to the lower die body as described above, and set the punching shape by preventing relative movement of the presser corresponding to the cutting blade block removed from the lower die with respect to the upper die body. A plate material punching method, comprising punching a plate material using an upper die and a lower die in which a punch shape is set. 2. The method according to claim 1, wherein a spacer is arranged between the upper die body and the presser to prevent relative movement of the presser with respect to the upper die body. 3. The method according to claim 2, wherein an upper die having a cutting blade surrounding the outer periphery of the presser is used. 4. A lower die for punching plate materials of a plurality of shapes, the lower die having a plurality of cutting blade blocks having cutting blades at upper corners detachably provided on a lower die body. Supports an upper die with a shape corresponding to each cutting blade block of the lower die and a cutting edge at the lower corner that is elastically supported on the upper die body in the vertical direction, and a cutting blade block that is removed according to the punching shape Means for preventing relative movement of the presser with respect to the upper die body.