JPH0733255U - Cutting knife - Google Patents

Abstract

(57) [Abstract] [Purpose] An object of the present invention is to provide a cutting knife that moves sufficiently in the direction of the tip of a blade to exhibit sufficient sharpness. [Arrangement] On the cutting side, a concavo-convex blade having each apex in the direction of the cutting edge is provided, and the concavo-convex shape forms an acute angle notch on the front side and the back side in the thickness direction, or Based on the cutting knife based on forming a sharp cut in one direction from the side to the back side,
As a result, the knife for cutting can increase the cutting effect on the portion to be cut by moving vertically to the tip direction of the blade.

Description

[Detailed description of the device]

[0001]

[Industrial applications]

 The present invention relates to a cutting knife that is convenient for cutting an article, especially the edge of the article.

[0002]

[Prior art]

 In general, cutting of an article with a moving cutting knife is performed in various steps in order to meet the standards such as length and weight of the article, or to obtain an appropriate thickness.

Usually, in such a cutting process, the tip of the cutting edge has a linear shape like a so-called guillotine, and as shown in the sectional views of FIGS. 1A and 1B, the tip has a front surface and a back surface. A blade is used that is bilaterally cut with a sharp angle or has a sharp cut from the front surface to the back surface of the tip.

However, even if such a conventional guillotine type cutting knife is moved in the tip direction, the sharpness of the knife is not sufficient because the tip shape of the blade of the knife forms a straight line. Therefore, it is necessary to devise various methods for moving the blade, such as moving the knife in a direction oblique to the tip.

However, adopting such a special moving method is complicated when automatically cutting an article.

[0006]

[Problems that the device needs to solve]

 The present invention aims to provide a cutting knife that overcomes the above-mentioned drawbacks of conventional cutting knives and can perform a sufficient cutting function only by moving in the direction of the blade tip. .

[0007]

[Means for Solving the Problems]

 In order to solve the problems as described above, the structure of the present invention is provided with an uneven blade having each apex in the cutting edge direction on the cutting side, and the uneven shape is formed on both the front surface side and the back surface side in the thickness direction. It comprises a cutting knife based on forming an acute-angle incision on the surface or forming an acute-angle incision in one direction from the front surface side to the back surface side.

[0008]

[Function of the device]

 In the above configuration, the cutting knife of the present invention has an uneven shape having each apex at the tip end of the cutting edge, similar to a so-called saw, and therefore, in the process of moving the knife in the tip direction, the cutting knife is sharply cut. You will have to cut in.

On the other hand, in the case of a saw, the inclined cutting directions formed from the front surface to the back surface of the knife are alternately reversed in the left-right direction of each uneven surface. In the cutting knife, as described above, an acute-angled notch is formed in both the front side and the back-side in the thickness direction, or an acute-angled notch is formed in one direction from the front side to the back side. However, this is based on the fact that it is not necessary to make the cuts in opposite directions because they move in the direction of the cutting edge rather than moving in the lateral direction as with a saw.

[0010]

Embodiment 1 FIGS. 2 (a) and 2 (b) show the shape of a blade of a typical cutting knife 1 of the present invention, in which each uneven portion 11 is formed in a substantially triangular shape.

However, as shown in FIG. 2A, the inner portion of each uneven portion 11 does not need to intersect each uneven portion in a zigzag shape, and may have a smoothly connecting shape.

In the first embodiment, as shown in FIG. 2B, the cutting of the cutting edge is formed at an acute angle on both the front surface side and the back surface side in the thickness direction.

[0013]

Embodiment 2 FIGS. 3 (a) and 3 (b) show an embodiment in which the tip of each concave-convex shaped portion 11 is sharply inclined in the plane direction, and the inside thereof has a gradually gradual inclination.

The present embodiment is characterized in that when the cutting knife 1 is moved, it sharply cuts into the object 2 to be cut.

In the case of Example 2, as shown in FIG. 3B, an acute-angled cut is formed in one direction from the front surface side to the back surface side.

[0016]

[Effect of device]

 In the cutting knife according to the present invention as described above, if the knife moves vertically in the tip direction, it has an uneven shape having a top at the tip part of the cutting edge and has an acute angle on both the front surface and the back surface in the thickness direction. Since a notch is formed or an acute-angled notch is formed in one direction from the front surface to the back surface, the knife bites sharply inside the part to be cut, and compared with the conventional guillotine-type cutting knife, it has a special cut. It shows excellent sharpness.

In particular, as shown in FIG. 4, in order to make the standards of moving objects uniform, when cutting an end, the cutting blade selects a sharp cut from the front surface to the back surface in one direction, and If the inclination is on the ear side to be cut or excluded, the cut ear easily separates from the original object to be cut and does not stick to the knife, so perform efficient cutting. You can

[Brief description of drawings]

1 (a) and (b): sectional views showing a conventional guillotine-shaped cutting knife.

2A and 2B are a plan view and a side view, respectively, showing the shape of the first embodiment of the present invention.

2 (a) and (b): plan view and side view showing the shape of a cutting knife according to a second embodiment of the present invention.

FIG. 3 is a sectional view showing a state in which an ear end of an object is cut by the cutting knife of the present invention. (The black arrow indicates the moving direction of the cutting knife.)

FIG. 4 is a sectional view showing a state in which an object to be cut is cut by the cutting knife of the present invention.

[Explanation of sign]

 1: Knife for cutting 11: Concavo-convex part 2: Object to be cut

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[Procedure amendment]

[Submission date] March 30, 1994

[Procedure Amendment 1]

[Document name to be amended] Statement

[Name of item to be corrected] Brief description of the drawing

[Correction method] Change

[Correction content]

[Brief description of drawings]

1 (a) and (b): sectional views showing a conventional guillotine-shaped cutting knife.

2A and 2B are a plan view and a side view, respectively, showing the shape of the first embodiment of the present invention.

3 (a) and (b): a plan view and a side view showing a shape of a cutting knife according to a second embodiment of the present invention.

FIG. 4 is a sectional view showing a state in which an ear end of an object is cut by the cutting knife of the present invention. (The black arrow indicates the moving direction of the cutting knife.)

Claims (4)

[Scope of utility model registration request] 1. A cutting edge is provided with an uneven blade having each apex in the direction of the cutting edge, and the uneven shape forms an acute-angled cut on both the front surface side and the back surface side in the thickness direction, or Cutting knife based on forming a sharp cut in one direction from the front side to the back side 2. The cutting knife according to claim 1, wherein each of the irregularities has a substantially triangular shape. 3. The cutting knife according to claim 1, wherein each concave-convex shape is sharp at the tip of the cutting edge, and is formed by a curve that forms a gradual angle from the tip to the inside. 4. A cutting method by moving the cutting knife according to claim 1 in the direction of the top of the blade of the knife.