JPH10309619A - Shearing device for bent material - Google Patents

Abstract

PROBLEM TO BE SOLVED: To provide a shearing device for a bent material, capable of easily and reliably shearing a bent material and performing mass production. SOLUTION: In a cutting device for partially cut a bent material 1 formed by bending plate-shape parts 1a, 1b into an L shape or a U shape, a shearing blade 3 for cutting one plate-shape part 1a is fixed on the central part of a base table 2, fitting parts 8 to which the other plate-shape part 1b is to be fitted is formed near the shearing blade 3 of the base table 2, a press surface plate 4 is arranged above the shearing blade 3, one plate-shape part 1a of the bent material is placed on the cutting blade 3, the other plate-shape part 1b is fitted to the fitting part 8, one plate-shape part is pressed toward the shearing blade 3 by the press surface plate 4, and therefore, the bent material 1 is cut.

Description

DETAILED DESCRIPTION OF THE INVENTION

[0001]

BACKGROUND OF THE INVENTION 1. Field of the Invention The present invention relates to a cutting apparatus for cutting a part of a bent material such as a corrugated cardboard material or a foamed resin plate bent in an L-shape or a U-shape.

[0002]

2. Description of the Related Art For example, when a product is stored in a packaging box for packaging, it is known that a cushioning material such as cardboard or a foamed resin plate is interposed between the product and the inner surface of the packaging box in order to protect the product. Have been. In this case, when a part of the product is protruding, it is necessary to cut a hole in the cushioning material to escape the protruding portion of the product. Therefore, conventionally, the cushioning material has been cut and processed with a drill or a panel saw. Specifically, first, the surface of the material is scribed in a predetermined shape such as a circle or a polygon, and cut along a scribed line with a drill or a panel saw.

[0003]

However, in such a processing method, a scribing operation must be performed on the material every time the material is cut. For this reason, there is a problem that the work before cutting is very troublesome, and time is required for setting the material, so that mass production cannot be performed and the cost increases.

[0004] When a material to be processed is a bent material bent in an L-shape or a U-shape, when cutting a part thereof, another part may obstruct the processing.

SUMMARY OF THE INVENTION It is an object of the present invention to solve the above-mentioned problems and, in particular, to provide a bending material cutting apparatus capable of easily and surely cutting the above-mentioned bending material and mass-producing it.

[0006]

In order to solve the above-mentioned problems, an apparatus for cutting a bent material according to the present invention comprises a bent member formed by bending two or more plate-shaped portions into an L-shape or a U-shape. A cutting device that cuts a part, fixing a cutting blade that cuts one plate-shaped portion of the bent material at the center of the base,
In the vicinity of the cutting blade of the base, a fitting portion is formed in which another plate-shaped portion of the bending material is fitted, and a press face plate is arranged above the cutting blade, and on the cutting blade. One plate-shaped portion of the bent material is placed, the other plate-shaped portion is fitted to the fitting portion, and the one plate-shaped portion is pressed toward a cutting blade by a press face plate to bend the bent material. Is characterized by cutting.

[0007] It is preferable that an elastic body which is compressed by the other plate-like portion when the pressing face plate is pressed is disposed at the bottom of the fitting concave portion.

[0008]

1 and 2 show a cutting apparatus. This cutting device cuts a bent material 1 and includes a cutting blade 3 provided at an upper center of a base 2 and a press face plate 4 disposed above the cutting blade 3.

The bent member 1 is made of a corrugated cardboard material and has a laminated structure. The horizontal plate portion 1a and the vertical plate portion 1b are formed by L
It is formed by bending into a letter shape, and is intended to cut a part of the horizontal plate-like portion 1a. In addition, the bending material 1 is not limited to a cardboard material. For example, a foamed resin material may be bent.

The base 2 is made of plywood, and a fixed base 5 is further formed at the upper center thereof. A support member 6 that supports the cutting blade 3 is fixed to the fixed base 5. Support member 6
A pressure plate 7 made of metal such as iron or stainless steel is disposed between the pressure plate 7 and the fixing table 5, and the cutting blade 3 is supported on the pressure plate 7.

Although the shape of the cutting blade 3 is rectangular, it may be circular, elliptical, polygonal, or the like, if necessary. The height h of the cutting blade 3 is set to be at least larger than the thickness t1 of the horizontal plate-like portion 1a of the bent member 1.

Next, a fitting portion 8 is formed near the cutting blade 3 of the base 2. The width w of the fitting portion 8 is formed to be substantially the same as the thickness t2 of the vertical plate-like portion 1b of the bending member 1. By fitting the vertical plate-like portion 1b, the vertical plate-like portion 1b is attached to the base 2. The fitting portion 8 is formed at a position where the cutting blade 3 comes into contact with a predetermined processing portion of the horizontal plate-shaped portion 1a when the vertical plate-shaped portion 1b is fitted. I have. The fitting portion may be formed according to the shape of the bent material.

An elastic body 9 is arranged at the bottom of the fitting portion 8. The dimension from the opening end of the fitting portion 8 to the surface of the elastic body 9 is set such that the vertical plate-like portion 1b comes into contact with the surface of the elastic body 9 when the horizontal plate-like portion 1a of the bending member 1 hits the cutting blade 3. It is preferable to set The elastic body 9 may be a material such as urethane resin or a spring material.

The press face plate 4 is operatively connected to a press machine (not shown), and is configured to move downward in conjunction with the operation of the press machine.

When the cutting apparatus having the above structure is used, the horizontal plate-like portion 1a of the bent member 1 is placed on the cutting blade 3 supported and fixed on the base 2, while the vertical plate of the bent member 1 is placed. The shape part 1 b is fitted into the fitting part 8 of the base 2. Then, the pressing machine is operated to press the horizontal plate-shaped portion 1 a by the press face plate 4 toward the cutting blade 3 to cut the plate 1 a. Thereby, a hole is formed in a predetermined portion of the horizontal plate-shaped portion 1a.

When the horizontal plate-like portion 1a is cut, the vertical plate-like portion 1b is pushed down below the fitting portion 8, so that
The tip presses and compresses the elastic body 9. Therefore,
When the press face plate 4 returns to the original position after the cutting process, the restoring force of the elastic body 9 acts on the vertical plate-like portion 1b. The processed portion easily comes off from the cutting blade 3.
Therefore, the work becomes easier.

It is not always necessary to dispose the elastic member 9 in the fitting portion 8. In this case, the vertical plate-shaped portion 1b is fitted into the fitting portion 8 and does not touch the surface of the base 2, so that the cutting operation can be performed without any trouble.

The cutting blade 3 does not sink even when receiving the pressing force of the pressing face plate 4 by the pressure-resistant plate 7 during pressing, and the horizontal plate-shaped portion 1a can be reliably cut.

FIGS. 3 and 4 show another example of a cutting device of the bending member 1, wherein the bending member 1 is formed in a U-shape. In this case, the vertical plate portions 1b on both sides may be fitted to the fitting portions 8 on both sides of the cutting apparatus. Since the position of the cutting blade 3 with respect to the horizontal plate-shaped portion 1a is set at a predetermined position by the fitting, the bent material 1 can be cut easily and reliably continuously as in the above-described example.

Since the width of the bent member 1 and the processed portion of the horizontal plate-shaped portion 1a are not always constant, it is preferable that the width and the position of the fitting portion 8 can be adjusted in the horizontal direction.
Further, the fitting portion 8 is not limited to the illustrated one. It may be a hole that penetrates the base 2 or a groove.

Further, according to the cutting apparatus, not only bent materials but also flat materials can be cut.

[0022]

According to the first aspect of the present invention, the position of the fitting portion is such that when one plate-like portion of the bent material is fitted, the cutting blade hits a predetermined processing portion of the other plate-like portion. Formed at the location. That is, since the fitting portion constitutes a means for positioning the processing portion, the conventional scribing operation is not required at all, and the processing can be performed continuously. Therefore, the cutting process can be performed easily and reliably, and mass production can be performed, and the cost can be significantly reduced.

Further, since the plate-like portion bent with respect to the plate-like portion processed by the bending material is fitted into the fitting portion, it does not touch the surface of the base, so that the cutting operation can be performed without any trouble. And the height of the cutting blade with respect to the base does not need to be unnecessarily increased, so that the cutting blade is stabilized.

According to the second aspect of the present invention, in addition to the above-described effects, since the elastic body is disposed below the fitting portion, the plate-like portion fitted to the fitting portion is pressed down at the time of pressing. The tip presses and contracts the elastic body. Therefore, when the pressing force by the press face plate is released after the cutting process, the elastic material restores the plate-like portion in the fitting portion, and the elastic material automatically pushes up the bent material by this elastic force. As a result, the processed portion easily comes out of the cutting blade, and the work is further facilitated.

[Brief description of the drawings]

FIG. 1 is a side view of an example of a bending material cutting apparatus according to the present invention.

FIG. 2 is a perspective view of the cutting apparatus.

FIG. 3 is a side view of a cutting apparatus of another example of a bending material.

FIG. 4 is a perspective view of the cutting apparatus.

[Explanation of symbols]

 DESCRIPTION OF SYMBOLS 1 Bending material 2 Base 3 Cutting blade 4 Press face plate 8 Fitting part 9 Elastic body

Claims (2)

[Claims] 1. A cutting device for cutting a part of a bent member formed by bending two or more plate-shaped portions into an L-shape or a U-shape, wherein the bending member is provided at the center of a base. A cutting blade for cutting the two plate-like portions is fixed, and a fitting portion is formed near the cutting blade of the base to which another plate-like portion of the bending material fits, and above the cutting blade. A press face plate is arranged, one plate-shaped portion of the bent material is placed on the cutting blade, the other plate-shaped portion is fitted to the fitting portion, and the one plate-shaped portion is pressed. An apparatus for cutting a bent material, wherein the bent material is cut by being pressed toward a cutting blade by a face plate. 2. The bending material cutting apparatus according to claim 1, wherein an elastic body that is compressed by the other plate-shaped portion when the pressing face plate is pressed is disposed at a bottom of the fitting recess.