JP2596375Y2 - Blank type cutting tool - Google Patents

Description

[Detailed description of the invention]

[0001]

BACKGROUND OF THE INVENTION 1. Field of the Invention The present invention relates to a blank-type cutting blade for cutting an edge of a panel-shaped work.

[0002]

2. Description of the Related Art As shown in FIG. 2, a blank die for cutting an edge of a panel-shaped work is a lower die 1 having a lower die cutting edge 3. As shown in FIG.
An upper die 2 that moves up and down with respect to the lower die 1; a pad 4 that presses a work W set on the lower die 1 when the upper die 2 descends; Hanging cam 5,
The upper cutting blade 6, which is provided on the front surface of the upper hanging cam 5 and cuts the edge of the workpiece W by the lower cutting edge 3, and the cut scrap S are dropped, and the scrap S is dropped out of the lower die 1. And a chute 7 for discharging.

[0003]

In the blank mold having the above-mentioned conventional structure, there is a blank mold in which an edge of a workpiece W to be cut is formed into an arc-shaped curved surface by press forming in a previous process. In this case, since the front end of the curved surface interferes with the front end surface of the upper die cutting edge 6, a notched relief recess 6a is formed in the front end surface of the upper die cutting edge 6.

[0004] Therefore, the edge of the workpiece W to be cut is
The upper die 6 is cut in such a manner as to enter the relief recess 6a. Then, the cut scrap S should drop onto the chute 7 by its gravity, but the cut scrap S cut in such a manner as to enter the escape recess 6a of the upper cutting edge 6 scatters in an irregular direction, There was a problem that the scrap S was caught on the lower mold 1 and clogged with the scrap.

An object of the present invention is to provide a blank-type cutting blade which solves the conventional problems.

[0006]

SUMMARY OF THE INVENTION In order to achieve the above object, the gist of the present invention is to provide a lower die having a lower die cutting edge, an upper die that moves up and down with respect to the lower die, and an upper die that moves upward and downward. In a blank mold having an upper die cutting edge that moves forward by the downward movement and cuts an arc-shaped edge of the work with the lower die cutting edge, the front edge of the upper die cutting edge has a work edge shape. An arc-shaped convex portion having the same shape, and a jaw protruding from the arc-shaped convex portion below the arc-shaped convex portion are provided.

[0007]

According to the above construction, the edge of the workpiece to be cut is in contact with the arcuate convex portion of the front end surface of the upper die cutting blade, and is supported by the jaw. Push it out to a certain position and let it fall.

[0008]

DESCRIPTION OF THE PREFERRED EMBODIMENTS Embodiments of the present invention will be described below with reference to the drawings. In FIG. 1, reference numeral 1 denotes a lower die, and 2 denotes an upper die that moves up and down with respect to the lower die 1. The lower die 1 has a lower cutting edge 3,
And a chute 7 for discharging the scrap S out of the lower mold 1.

The upper die 2 has a pad 4 for pressing a work W set on the lower die 1 when the upper die 2 descends, an upper suspension cam 5 which moves forward and backward by moving the upper die 2 up and down, and The work W is provided on the front surface of the suspension cam 5 and is
And an upper cutting edge 6 for cutting the edge of the upper die.

In the present invention, an arc-shaped convex portion 6b having the same shape as the edge of the work is provided on the front end surface of the upper die cutting edge 6, and a jaw 6c projecting below the arc-shaped convex portion 6b below the arc-shaped convex portion 6b.
Are provided.

Since the present invention has the structure as described above, the upper die 2 descends and the pad 4 presses the work W set on the lower die 1, and the upper die cutting blade via the upper suspension cam 5. 6
Moves forward.

By moving the upper cutting edge 6 forward, the workpiece W
Are in contact with the arc-shaped convex surface 6b formed on the front end surface of the upper cutting edge 6, and the lower edge of the arc-shaped edge is supported by the jaw 6c.

In this state, the arcuate edge of the workpiece W is cut by the upper die 6 and the lower die 3 by the forward movement of the upper die 6. The arcuate edge of the cut workpiece W is moved to the forward moving end of the upper cutting edge 6 while being held by the front end face of the upper cutting edge 6, and the scrap S is moved at the forward moving end of the upper cutting edge 6.
And push it to a certain position on the chute 7 and let it fall,
Discharge outside the lower mold 1.

[0014]

[Effects of the Invention] As described above, according to the present invention, a lower die having a lower die cutting edge, an upper die that moves up and down with respect to the lower die,
In a blank die having an upper die cutting edge for moving forward by the lowering movement of the upper die and cutting the arc-shaped edge of the work with the lower die cutting edge, a work end is provided at a front end face of the upper die cutting edge. An arc-shaped convex portion having the same shape as the edge shape, and below the arc-shaped convex portion,
Since the jaws projecting from the arcuate convex surface are provided, the arc-shaped edge of the workpiece after cutting is held on the front end surface of the upper die cutting edge up to the forward moving end of the upper die cutting edge, so that scrap is removed. Thus, the arc-shaped edge of the work can be surely dropped to a predetermined position on the chute, thereby preventing the clogging of the scrap due to the scattering of the scrap and having the advantage of smoothly and surely discharging the scrap.

[Brief description of the drawings]

FIG. 1 is a sectional view of a main part of the present invention.

FIG. 2 is a sectional view of a conventional main part.

[Explanation of symbols]

 DESCRIPTION OF SYMBOLS 1 Lower die 2 Upper die 3 Lower die cutting blade 4 Pad 5 Upper hanging cam 6 Upper die cutting blade 6b Convex convex part 6c Jaw part 7 Chute part

Claims (1)

(57) [Scope of request for utility model registration] 1. A lower mold having a lower mold cutting edge, an upper mold moving up and down with respect to the lower mold, and moving forward by the lowering movement of the upper mold to form a circle of a work by the lower mold cutting blade. In a blank mold having an upper die cutting blade for cutting an arc-shaped edge, an arc-shaped convex portion having the same shape as an edge shape of a work on a front end surface of the upper die cutting blade ,
A blank-type cutting blade characterized by having a jaw projecting below the arc-shaped convex portion below the arc-shaped convex portion .