JP3436129B2 - Die-cut block - Google Patents

Description

Detailed Description of the Invention

[0001]

BACKGROUND OF THE INVENTION 1. Field of the Invention The present invention relates to a die block which is incorporated in a part of a die having a cutting blade, and more particularly to a metal die block having a cutting blade continuous with a cutting blade provided in a wooden die. It is a thing.

[0002]

2. Description of the Related Art Conventionally, when a film-shaped article such as a liquid crystal film, paper (cardboard), thin plate (metal foil), etc. is cut into a predetermined shape, a cutting blade having a cutting blade adapted to the shape to be cut is used. It is common to use a device.

When manufacturing a relatively inexpensive article, it is necessary to reduce the cost of the die cutting.
A structure is used in which the cutting blade is embedded in a relatively inexpensive and easy-to-process member such as plywood.

Furthermore, in a punched product (article to be cut), when the product is mounted on a part of another device or the like, its mounting direction and high dimensional accuracy may be required. In such a case, it is common practice to form a concavo-convex portion on the product, or to form a hole for attachment or alignment.

Therefore, in the die cutting, a circular forming blade is embedded in the plywood in order to form a complicatedly bent portion of the cutting blade and a mounting hole. Conventionally, these cutting blades and cylindrical forming blades have been manually bent to fit the shape of the article to be cut and embedded in the plywood. Then, if the punching waste after the article to be cut is punched is clogged inside the forming blade for forming the mounting hole, the cutting function of the forming blade may be hindered. A scrap discharge pin that can move up and down is provided inside the shape-forming blade to automatically discharge scraps.

Since the cutting blade is worn out after a certain amount of time and cannot be cut, it is used by appropriately polishing it. However, since the height becomes low when the cutting blade is polished, each part is conventionally adjusted according to the height of the cutting blade. By adjusting, the article to be cut can be surely cut.

[0007]

As described above, the prior art is as follows.
For example, because a thin cylindrical molding blade for forming a circular hole was embedded, or while a long cutting blade was bent, it was manually embedded in plywood (wooden mounting member) in the holding groove, For parts with complicated shapes, such as the parts to be cut, it takes time to install, and if there are multiple holes in the product to be cut, only the spacing (dimensions) between these forming blades As a result, it was difficult to make the distance between the cutting blade and the forming blade accurate.

Further, the shaping blade forming the positioning or mounting hole is, for example, inside a thin cylindrical member, the dust discharge pin is elastically moved in the axial direction of the dust discharge pin by being biased by the coil spring. Since it is a fine part (part with a diameter of about 1 mm) that is movable, maintenance such as polishing of the molding blade and replacement of the coil spring was troublesome. In particular, since the forming blade is a small part, only a very small coil spring can be used, and it is difficult to set a large elastic force, that is, a scrap discharge force, and a long service life is set. Can't
There was a problem that the replacement frequency increased. further,
The blade parts such as the molding blades change their dimensions due to polishing, so it is not only difficult to adjust the height with other cutting blades, but also when they are moved vertically to adjust the height with respect to the plywood of the die, There was a problem that the fixing became loose easily.

The present invention has been made in view of the above problems, and it is an object of the present invention to attach a cutting blade in a die without labor and to discharge cutting waste for a long period of time. It is an object of the present invention to provide a structure that can be reliably performed, and that even after polishing the cutting blade, the positional deviation between the cutting blade and the forming blade and the height adjustment can be easily performed.

[0010]

A die block according to the present invention is a metal die block incorporated in a part of a die, and a block body is provided with a cutting blade for cutting out an article to be cut. A molding blade for attaching the cut object or forming a positioning hole is provided, and further, a scrap discharge pin that is elastically movable along the protruding direction of the molding blade is provided inside the molding blade. This is characterized (claim 1), and the above object can be achieved thereby.

In the die-cut block according to the present invention, the block main body has a bottom lid that closes an accommodation hole for accommodating the scrap discharge pin and elastic means for urging the scrap discharge pin, The bottom lid is configured to substantially cover the entire bottom surface of the block body, and the bottom lid is detachably configured to have a plurality of thicknesses that change the dimensions of the block body. 2), In the scrap discharge pin, a portion housed in the housing hole has a diameter larger than that of a pin tip portion housed in the forming blade (claim 3), the elastic means. Is made of a rubber material (claim 4).

(Operation) In the die-cutting block according to the present invention configured as described above, the block blade having the cutting blade is integrally provided with the molding blade for forming the attachment hole of the article to be cut. The mounting dimensional accuracy with the forming blade can be improved. Further, since the scrap discharge pin that is elastically movable in the forming blade can be mounted on a relatively large block main body, its assembly and maintenance are facilitated (claim 1).

Further, in the die-cut block according to the present invention,
The block main body has a bottom lid that closes the accommodation hole that accommodates the scrap discharge pin and the elastic means for urging the scrap discharge pin, and the bottom cover is configured to substantially cover the entire bottom surface of the block main body, In addition, since the block main body having a plurality of thicknesses is detachably attached, the bottom cover can have a function of adjusting the dimensions of the cutting blade and the forming blade. Therefore, the height can be easily adjusted when the cutting blade and the forming blade are polished (claim 2).

Further, in the die-cut block according to the present invention, the scrap discharging pin is slidable by making the portion accommodated in the accommodating hole larger in diameter than the tip portion of the pin accommodated in the forming blade. Since the body part which is the part can be enlarged, and the biasing means can be enlarged,
Not only is the operation of the dust discharge pin stable and accurate over a long period of time, but it is also convenient for parts replacement (claim 3).

Furthermore, in the die-cut block according to the present invention, since the elastic means is made of a rubber material, a large elastic force can be set and a long life can be achieved (claim 4).

[0016]

BEST MODE FOR CARRYING OUT THE INVENTION Embodiments of a die-cutting block according to the present invention will be described below in detail with reference to the drawings. 1 is a perspective view showing a cutting device to which the punching block according to the present invention is applied. FIG. 2 is a cross-sectional view of essential parts in a state in which the cutting block according to the present invention is attached to the cutting device.

First, with reference to FIG. 1, a cutting device 1 to which a die block according to the present invention is applied will be described. The cutting device 1 includes a press surface plate 11 and the press surface plate 11
A die 12 arranged above and a press up / down operation plate 1 arranged above the press surface plate 11 and configured to be vertically movable.
3 and 3. In addition, reference numeral 14 in FIG. 1 indicates an article to be cut, which is cut by the cutting device 1, and reference numeral 17 indicates
It is a cylinder that drives the press up / down operation plate 13.

The die 12 is made of plywood having an appropriate thickness to which the cutting blade 22 can be attached. This die 1
The metal 2 has a metal die block 23 at a position where a part of the region where the embedded cutting blade 22 is provided is divided. The cutting blade 22 has a thin blade shape, and is bent into a substantially quadrangular shape here according to the shape of the article 14 to be cut. Then, the lower side of the cutting blade 22 is embedded in the plywood by a predetermined depth (partially embedded so as to be exposed on the back surface of the die), and the upper side is projected from the front surface of the die 12 to form a cutting edge. Further, the die-cut block 23 is for forming the attachment portion 15 and the attachment hole 16 used when the article 14 to be cut is attached to the device.

The die block 23 has a construction in which a cutting blade 26 and a forming blade 27 are provided on a block body 25 which is a metal rectangular parallelepiped which is removably embedded in the die 12. That is, on one surface side of the block main body 25, the intermediate portion is located inside the cutting blade 26 bent in a U-shape, and a circular, oval or polygonal molding blade for forming the mounting hole 16 is formed. 27 are provided.

As shown in FIG. 2, the punching block 23 has a circular, oval or polygonal molding blade 27 attached to the block body 25 for punching out the mounting hole 16 of the article 14 to be cut. A scrap discharging pin 28 for discharging scraps clogging the molding blade 27, a cushion rubber 29 for biasing the scrap discharging pin 28 upward, and a block body 2
5 and a bottom lid 30 attached to the bottom portion.

The forming blade 27 has the same height as the cutting blade 26. Further, the scrap discharge pin 28 has a pin portion 31 which is movable in the forming blade 27 and a cylindrical portion 32 having a diameter larger than that of the pin tip portion. The pin portion 31 projects from the forming blade 27 by a predetermined height. Column part 32
Is movably arranged in the accommodation hole 33 of the block body 25. A cushion rubber 29 such as silicon rubber is arranged in the accommodation hole 33.

The diameter of the accommodation hole 33 is, for example, 8 mm
The cushion rubber 29 loaded in the accommodation hole 33 can have a diameter of about 7 mm to 9 mm and a height (length) of about 8 mm. As described above, since the cushion rubber 29 has a larger size than the conventional coil spring and is made of a rubber material, a large elastic force can be set and the scrap discharge pin can be maintained in a stable state. It is also possible to extend the service life.

Next, the operation of the cutting device 1 will be described.
When the article 14 to be cut (hereinafter, also simply referred to as “product”) is cut, the press vertical working plate 13 descends, and the material of the product 14 is cut by the cutting blade 22 on the press surface plate 11 and the press vertical working plate 13. The product 14 is cut by pressing.
At this time, the pin portion 31 of the scrap discharge pin 28 is pressed downward and elastically pushed into the molding blade 27, and the mounting hole 16 is cut by the molding blade 27. After the cutting, the scraps that have been cut off are pushed into the forming blade 27 while riding on the pin portion 31.

After the product 14 is cut, the press up / down operation plate 13
Rises. At this time, the scrap discharge pin 28 is biased upward by the cushion rubber 29, and the pin portion 31 projects from the forming blade 27. As a result, the residue on the pin portion 31 is discharged from the forming blade 27. Further, the cutting blade 26 and the molding blade 27 of the removal block 23 with the scrap discharge pin are worn and cannot be cut after being used to some extent, and thus can be appropriately polished before use. In this case, since the heights of the cutting blade 26 and the forming blade 27 change, the cutting blade 26 and the forming blade 27 can be replaced by replacing the bottom cover 30 with one having a large thickness.
The height of can be easily adjusted to the cutting blade 22 on the die 21 side. Therefore, it is not necessary to adjust other parts.

As mentioned above, this cutting device 1
The cutting blade 23 for forming the mounting portion 15 of No. 4 and the forming blade 27 for forming the mounting hole 16 are detachable blocks, so that the dimensions of the mounting portion 15 and the mounting hole 16 are accurate. You can In this embodiment, the mounting portion 1
Although the case where there is one 5 has been described, the case where there are a plurality of 5 can be dealt with by providing a plurality of die-cut blocks 23 with scrap discharge pins. Then, in this case, the molding blade 27 of the die-cut block 23 with each waste discharge pin
Can be made highly accurate, which allows the dimensions between the mounting holes 16 to be finished with high accuracy.

Further, the scraps of the product contained in the molding blade 27 are pushed out by the scraps discharging pin 28 by providing the scraps discharging pin 28 which can be elastically moved up and down in the molding blade 27. The relatively large diameter cylindrical portion 32 that slides in the accommodation hole 33 ensures stable operation for a long time. Therefore, reliable punching work can be guaranteed without trouble such as clogging of scraps.

Further, the removal block 23 with a scrap discharge pin
Since the bottom cover 30 is provided on the base plate, and the thickness of the bottom cover 30 can be changed, the cutting blade 26 and the molding blade 27 have a dimension adjusting function. Since it is not necessary to adjust the portion of, the height can be easily adjusted.

[0028]

As described above, in the die-cutting block according to the present invention, the block blade having the cutting blade is integrally provided with the molding blade for forming the mounting hole of the article to be cut, so that the cutting blade and the molding blade are molded. It is possible to improve the dimensional accuracy of attachment to the blade. In addition, since the scrap discharge pin that can be elastically moved in the forming blade can be mounted on a relatively large block body, its assembly and maintenance are facilitated. Further, according to the die-cut block according to the present invention, the block main body has a bottom lid that closes the accommodation hole that accommodates the scrap discharge pin and the elastic means for urging the scrap discharge pin. The bottom cover can be provided with a dimension adjusting function for the cutting blade and the forming blade by being configured to substantially cover the entire bottom surface of the main body and being configured to be attachable / detachable to and from the block main body having a plurality of thicknesses. . Therefore, the height can be easily adjusted when the cutting blade and the forming blade are polished. Further, according to the die-off block according to the present invention, the scrap discharge pin is configured such that the portion accommodated in the accommodation hole has a larger diameter than the tip end portion of the pin accommodated in the molding blade. It is possible to increase the size of the body portion, increase the urging means, and use a rubber material. Therefore, the operation of the waste discharge pin can be stable for a long period of time (long life can be achieved) and Not only is it accurate, but it is also convenient for maintenance such as parts replacement.

[Brief description of drawings]

FIG. 1 is a perspective view showing a cutting device to which a punching block according to the present invention is applied.

FIG. 2 is a cross-sectional view of a main part of the cutting device to which the punching block according to the present invention is applied, in which the punching block is mounted, and is a cross-sectional view taken along the line AA in FIG.

[Explanation of symbols]

1 cutting device 14 products (articles to be cut) 16 mounting holes 23 cutting blade 25 block body 27 forming blade 28 waste discharge pin 30 Bottom lid

─────────────────────────────────────────────────── ─── Continuation of the front page (58) Fields surveyed (Int.Cl. ⁷ , DB name) B26F 1/44

Claims (4)

(57) [Claims] 1. A metal die block to be incorporated in a part of a die, wherein the block body is provided with a cutting blade for cutting out an article to be cut, and is used for attaching the article to be cut or forming a positioning hole. A molding block, wherein a molding blade is provided, and further, a scrap discharge pin that is elastically movable along a protruding direction of the molding blade is provided inside the molding blade. 2. The block main body has a bottom lid that closes an accommodation hole that accommodates the scrap discharge pin and an elastic means for urging the scrap discharge pin, and the bottom cover covers the entire bottom surface of the block main body. It is configured so as to substantially cover, and the bottom lid is detachably configured to have a plurality of thicknesses for changing the size of the block body.
The die-cut block described in. 3. The scrap discharge pin, wherein the portion accommodated in the accommodation hole has a larger diameter than the pin tip portion accommodated in the molding blade. The die-cut block described in. 4. The die block according to claim 2, wherein the elastic means is made of a rubber material.