JP2576667Y2 - Industrial knife - Google Patents

Description

[Detailed description of the invention]

[0001]

BACKGROUND OF THE INVENTION 1. Field of the Invention The present invention relates to an industrial knife (so-called Thomson blade), and more particularly to an industrial knife for punching and cutting paper, leather, fabric, plastic sheet, and the like.

[0002]

2. Description of the Related Art An industrial knife is, for example, a long one having a cross-sectional shape as shown in FIG. 1, in which a pressing blade 3 is formed at one end of two parallel side surfaces 1 and 2, and a back portion 4 is formed at the other end. Have been. The manufacturer of this industrial blade uses a long strip of steel material wound in a roll as a raw material, forms a blade of this, heat-treats, polishes the blade edge, cuts to a predetermined length, for example, 1,800 mm, Packaging and shipping.

[0003] The next trader manufactures a punching die by bending and cutting this industrial blade in accordance with the shape to be punched and implanting it in a groove of a base material such as a plywood plate.

[0004] An automatic bending machine has been put into practical use for automatically bending the industrial blade in accordance with a pre-written program command.

[0005]

For example, as shown in FIG. 6, the shape to be bent is determined by repetition of a bending position, a bending angle, and a radius of curvature of bending. In this case, in order to instruct and control the bending position by instructing these numerical values by the microcomputer program, the bending position A is represented by the length L from the previous bending position B, and the length L is measured. There must be. Therefore, it is necessary to control the feed amount of the material while measuring a long distance with high accuracy.

On the other hand, an object of the present invention is to provide an industrial blade capable of controlling a bending position with high accuracy without requiring a long distance measurement.

[0007]

According to the present invention, there is provided an industrial cutter having a cut, a recess, an engraved line or a cut line formed on a side surface of the blade at a predetermined pitch along a longitudinal direction of the blade. It is characterized in that a mark is provided.

[0008]

The automatic bending machine counts the number of marks and measures and controls the bending position from the final mark position.

[0009]

FIG. 2 is a perspective view showing an incised V-shaped groove 5 at a predetermined pitch in a back portion 4 of an industrial blade, which can be recognized from both side surfaces 1 and 2 of the blade. Can be. The V-grooves 5 can be formed by grinding.

FIG. 3 shows an incision 6 of a predetermined pitch formed on one side surface 1 of an industrial blade. This marking line 6 ... 6
Can be formed, for example, by scratching or pressing a carbide die.

FIG. 4 shows a printed image of white, silver or the like engravings 7...

FIG. 5 shows a pyramidal recess 8... 8 having a predetermined pitch engraved on one side 1 of an industrial blade. The recesses 8 can be formed, for example, by pressing a carbide die.

[0013]

According to the present invention, the distance from a bending point to the next bending point or cutting point is represented by counting the number of marks and the length from the last mark to control the feed amount of the blade. Therefore, the processing accuracy of the punching blade is improved, and the configuration of the automatic bending machine is simplified. Moreover, in the present invention, since the notch, the recess, the inscription, or the engraved line is used as the mark, the above-described effect can be achieved without lowering the strength of the blade.

[Brief description of the drawings]

FIG. 1 is a sectional view of an industrial knife.

FIG. 2 is a perspective view showing an embodiment of the present invention.

FIG. 3 is a perspective view showing another embodiment of the present invention.

FIG. 4 is a perspective view showing still another embodiment of the present invention.

FIG. 5 is a perspective view showing still another embodiment of the present invention.

FIG. 6 is an explanatory diagram of a solution problem.

[Explanation of symbols]

 1, 2 ··· Cross section of blade 3 ··· Blade 4 ··· Back 5 ··· V groove of predetermined pitch 6 ··· Marking line of predetermined pitch 7 ··· Engraved mark 8: recesses of a predetermined pitch P: predetermined pitch

Claims (1)

(57) [Scope of request for utility model registration] 1. An industrial cutting tool for punching and cutting paper, leather, cloth, plastic sheet, etc., having a cross section having a blade at one end of two parallel sides and a back at the other end. , on the side, at a predetermined pitch along the longitudinal direction, switching inclusive, recesses, industrial tool, wherein a mark by stamping or embossing lines are provided.