JP2796279B2 - Cutting method of thin plate - Google Patents

Description

DETAILED DESCRIPTION OF THE INVENTION

[0001]

BACKGROUND OF THE INVENTION 1. Field of the Invention The present invention relates to a decorative plate in which a decorative layer of paper quality is laminated on the surface of a substrate, the decorative plate can be cut by press punching, and the disorder of the cut surface on the product side can be prevented. The present invention relates to a method for cutting a thin plate that can improve quality.

[0002]

2. Description of the Related Art Conventionally, as shown in FIGS. 6 and 7, a thin plate a used as a face material of a door of a building is provided with a cutting blade c vertically erected on an upper surface of a base b. After the thin plate a is placed on the embankment members d, d made of an elastic material provided in the above, the thin plate a is pressed by a press machine to form an opening e as shown in FIG. Is done.

[0003]

However, in such a conventional method, when the thin plate a is pressed and pressed, the cutting blade c is tilted toward the product side as shown in FIG.
As shown in Nos. 0 to 12, the cut product of the thin plate a is liable to generate disturbance on the product side cut surface such as a corner portion crack f, a swelling g, and a surface crack h, often resulting in a product defect. .

In particular, when the thin plate a is a decorative plate (shown in FIG. 8) obtained by laminating and bonding a paper-like decorative layer a2 to the surface of a substrate a1 in which wood powder and an adhesive are kneaded and hardened, the substrate a1 is hard and hard to pass a blade. For this reason, the cutting blade c is frequently tilted, so that the conventional method by press pressing cannot be applied to the thin plate a (decorative plate), and a method that is inferior in productivity such as router processing is currently employed. is there.

[0005] The present invention is based on the fact that a support portion made of a hard material is laminated on the surface of an elastic material portion in a bank-like material on the product side, and when a thin plate is pressed, a cutting blade is inclined to the product side. It is an object of the present invention to provide a method of cutting a thin plate, which can prevent the occurrence of a defective product by suppressing disturbance of a cut surface on a product side and improve quality.

[0006]

SUMMARY OF THE INVENTION The present invention provides a method of cutting a thin plate, wherein the thin plate is cut by a blade of a cutting blade and one of the cut thin plates is a product side and the other is a scrap material side. The embankment-like material having an elastic material portion which is placed and pressed by the cutting and the elastic material portion is shrunk by being pushed over the blade portion with the cutting thereof is placed on both sides of the cutting blade and at a small gap from the cutting blade. In addition, the embankment material on the product side is characterized in that a support portion made of a hard material and preventing partial deformation is laminated on the surface of the elastic material portion.

The total thickness of the elastic material portion and the support portion of the embankment material on the product side is substantially equal to the thickness of the embankment material on the end material side, and the elastic modulus of the elastic material portion on the product side Is smaller than the elastic modulus of the embankment material on the side of the end material, the elastic material portions of both embankment materials can be uniformly contracted when pressed, and a lateral force acts on the cutting blade. This is desirable in that the inclination can be prevented more reliably and the inclination can be prevented more reliably.

Further, the present invention can prevent a cut surface on the product side of the thin plate from being disturbed and resulting in a defective product even when the thin plate is a decorative plate having a paper-like decorative layer laminated on a substrate surface.

[0009]

DETAILED DESCRIPTION OF THE PREFERRED EMBODIMENTS Referring to FIGS. 1 to 5, the method of cutting a thin plate according to the present invention is as follows. In the present embodiment, a thin plate A forming a door surface material is cut by a blade 2A of a cutting blade 2, and for example, a rectangular opening B is cut. …
To form a product C (shown in FIG. 5).

The thin plate A to be cut is, in this example,
As shown in FIG. 4, a decorative board K in which a paper quality decorative layer A2 is laminated and adhered to the surface of a hard substrate A1 in which wood powder and an adhesive are kneaded and hardened is used, but the thin plate A cut by the cutting method of the present invention is used. In addition to the decorative plate K, various plate-like materials such as a plywood sheet having a vinyl chloride sheet adhered thereto can be employed.

Further, by being cut, the thin plate A is divided into a product side in which one is the product C, and is divided into an end material side in which the other is the end material D.

In the method of cutting the thin plate A, as shown in FIG. 1, first, a cutting blade 2 which is continuous in a flat rectangular shape is placed on a horizontal upper surface of the base 15 and at a position along the periphery of the opening B to be bored. The blade 2A is vertically arranged upward.

The thickness T of the cutting blade 2 is set to a small thickness of about 1/10 to 1/3 times the thickness of the thin plate A.

On both sides of each cutting blade 2, as shown in FIGS. 2 and 3, the upper surface is located slightly above the tip of the blade portion 2A of the cutting blade 2, so that a thin plate A
Are placed on the ridges 3 and 4 and the cutting blade 2 has a small gap G.
And are continuously arranged in a plane rectangular shape with a space therebetween.

The pair of embankment members 3 and 4 are made of an elastic material portion 5 made of, for example, a sponge or the like which contracts when the thin plate A is pressed and pushed over the blade portion 2A as the thin plate A is cut. , 6.

The small gap G has a minimum width which allows the elastic members 5, 6 contracted by the pressing of the thin plate A in the lateral direction.

The embankment member 3 on the product side is formed on the surface (upper surface) of the elastic member portion 5 having a rectangular cross section fixed to the upper surface of the base 15 along the annular shape of a flat rectangular frame along the elastic member portion 5. And a support portion 7 made of a hard material such as plywood is laminated and bonded to be integrated.

The embankment member 4 on the side of the end material is composed of only the elastic member portion 6 having a rectangular cross section fixed to the upper surface of the base 15, and the thickness of the embankment member 3 on the product side, ie, the elastic member The total thickness T1 of the portion 5 and the support portion 7 and the thickness T2 of the embankment-shaped material 4 on the end material side are substantially the same such that the upper surface can support the thin plate A.

On the upper surface of the base 15, a rectangular frame-shaped receiving member 16 for supporting the peripheral portion of the pressed thin plate A is mounted.

On the upper surfaces of the embankment members 3 and 4, the decorative paper layer A2
As shown in FIG. 4, the thin plate A placed on the upper side is pressed down using an appropriate press machine, and the blade portion 2 is pressed.
It is cut by pushing over A.

At this time, the elastic members 5, 6 of the bank members 3, 4 contract to support the thin plate A, but the elastic modulus of the elastic member 5 on the product side is reduced by the elastic member 5, 4 on the end member side. (Elastic material part 6)
By making the elastic modulus smaller than the elastic modulus of the elastic member, it is possible to balance the reaction force at the time of pressing the elastic material portion 5 and the elastic material portion 6 on the end material side which are thinned by the thickness of the support portion 7. As a result, it is possible to equalize the contraction of both elastic material portions 5 and 6, thereby preventing a lateral force from acting on the cutting blade 2,
The inclination of the cutting blade 2 can be eliminated, and the quality of the cut surface on the product side can be stabilized.

Since the support portion 7 made of a hard material is laminated on the surface of the elastic portion 5 on the product side, the cutting blade 2
Can be suppressed by the support portion 7 by preventing partial deformation of the upper edge portion of the bank-like material 3 on the product side, and the cutting blade 2 cracks at the edge of the opening B of the product C. ,
The thin plate A can be cut with good quality without causing product defects such as swelling.

Further, in the present embodiment, since the support portion 7 is annularly continuous, the cutting blade 2 can be supported over its entire length, and the falling of the cutting blade 2 toward the product can be prevented more reliably. .

Further, by vertically disposing the cutting blades 2 in a ring shape, the inclination of the cutting blades 2 can be suppressed more reliably.

Further, the decorative plate K in which the paper quality decorative layer A2 whose cut surface is likely to be disturbed by the relative movement of the cutting blade 2 and particularly the returning operation after cutting is laminated on the surface of the substrate A1 is used as the thin plate A. Since the cutting blade 2 is supported by the support portion 7 to prevent the cutting blade 2 from tilting toward the product side, it is possible to reliably prevent the cut surface of the decorative plate K on the product side from being disturbed and causing a product defect.

The decorative board K is formed by laminating a paper decorative board A2 on only one side of the substrate A1.
Even those laminated with a paper decorative board on both sides can be cut with high quality by the method of the present invention.

Conventionally, such a decorative board K cannot be cut by press punching due to the hardness of the substrate A1 or a defective cut surface, so that the decorative board K relies on router processing or the like. However, the method of the present invention is adopted. By doing so, the inclination of the cutting blade 2 can be prevented, so that cutting can be performed even by press punching, and productivity can be improved.

[0028]

As described above, the method for cutting a thin plate according to the present invention comprises:
In the embankment material on the product side, since the support part made of hard material and preventing partial deformation is laminated on the surface of the elastic material part, the inclination of the cutting blade to the product side due to the operation when pressing the thin plate is The cutting portion can be suppressed by supporting the cutting blade by the support portion that prevents partial deformation of the material, preventing the cutting blade from leaning toward the product side and causing a disorder on the product side cut surface of the thin plate, suppressing product defects and improving quality. Can be improved, and productivity can be increased as compared with router processing.

According to the second aspect of the present invention, the thickness of the embankment on the product side is substantially the same as the thickness of the embankment on the offcut side, and the elastic modulus of the elastic member on the product side is set to When the elastic modulus of the elastic material part is smaller than that of the embankment material, the elastic modulus of the elastic material part on the product side where the thickness of the elastic material part becomes thinner by the thickness of the support part is reduced. The balance of the reaction force at the time of pressing by the elastic material portion of the material can be achieved, and both elastic material portions can be contracted evenly at the time of pressing. As a result, a lateral force acts on the cutting blade, so that the cutting blade is Tilt can be prevented, and thin plates can be cut with good quality and sharpness.

Further, in the invention according to claim 3, when the thin plate is a decorative plate in which a decorative paper layer is laminated on the surface of a substrate, the cut surface of the decorative paper layer is moved by the cutting blade, and particularly the cut surface of the cutting blade after cutting. Despite being easily disturbed by the return operation, since the supporting portion suppresses the inclination of the cutting blade toward the product, it is ensured that the cutting blade is inclined and the cut surface of the thin plate on the product side is disturbed to cause a product defect. In addition to being able to improve the quality, it is possible to improve the quality, and also what can be conventionally adopted only for the router processing can also be performed by the press punching processing, thereby improving the productivity.

[Brief description of the drawings]

FIG. 1 is a perspective view showing an example of an arrangement of a cutting blade and a bank material.

FIG. 2 is an enlarged perspective view showing a part thereof.

FIG. 3 is a sectional view of the same.

FIG. 4 is a cross-sectional view showing a pressed state of a thin plate.

FIG. 5 is a perspective view showing a product after cutting a thin plate.

FIG. 6 is a perspective view for explaining a conventional technique.

FIG. 7 is a sectional view of the same.

FIG. 8 is a sectional view showing the inclination of a cutting blade when a thin plate is pressed.

FIG. 9 is a perspective view showing the product after cutting the thin plate.

FIG. 10 is a partial perspective view showing an example of a defective product.

FIG. 11 is a partial perspective view showing another example of poor product quality.

FIG. 12 is a partial perspective view showing still another example of poor quality of a product.

[Explanation of symbols]

 2 Cutting blade 2A Blade part 3, 4 Embankment material 5, 6 Elastic material part 7 Support part A Thin plate A1 Substrate A2 Paper quality decorative layer K Decorative plate

Claims (3)

(57) [Claims] 1. A method for cutting a thin plate, wherein one of the thin plates to be cut is cut by a blade portion of a cutting blade and one of the thin plates is cut to a product side, and the other is cut off. A ridge-shaped material having an elastic material portion which is pressed along with the blade portion and contracts by being pushed over the blade portion is disposed on both sides of the cutting blade and at a small gap from the cutting blade, and a ridge on the product side is provided. A method for cutting a thin plate, wherein a support member made of a hard material to prevent partial deformation is laminated on a surface of an elastic material portion. 2. The embankment on the product side, wherein the total thickness of the elastic material portion and the support portion is substantially the same as the thickness of the embankment material on the end material side, and 2. The method for cutting a thin plate according to claim 1, wherein the elastic modulus is smaller than the elastic modulus of the bank material on the side of the offcuts. 3. The method for cutting a thin plate according to claim 1, wherein the thin plate is a decorative plate in which a decorative layer of paper quality is laminated on a substrate surface.