JP2001162434A - Hoop material cutter - Google Patents

Abstract

PROBLEM TO BE SOLVED: To provide a hoop material cutter that employs a reduced number of parts and can ensure a smooth sliding movement of its ram and high-precision machining. SOLUTION: A base frame 20, a sub frame 21 and a spacer 25 forming a clearance in which a ram 3 is capable of sliding motion constitute a three- layered structure. The spacer 25 is integrally cast as a hollow rectangle along the edges of the base frame 20 or sub frame 21.

Description

DETAILED DESCRIPTION OF THE INVENTION

[0001]

BACKGROUND OF THE INVENTION 1. Field of the Invention The present invention relates to a hoop material cutter for cutting a scrap hoop material in conjunction with an automatic press device or the like, and more particularly, to a spacer for keeping a space between a base frame and a subframe where a ram can slide. .

[0002]

2. Description of the Related Art Conventionally, in order to keep an interval at which a ram can slide between a base frame and a subframe, a steel material corresponding to each of four sides is provided between the base frame and the subframe having a substantially rectangular shape. A rod-shaped spacer is interposed, and the three members are integrated by tightening together.

[0003]

However, the above-mentioned conventional method can save material cost, but has a large number of parts, and the steel material is deformed due to processing, so that each part is processed with equal accuracy. This distortion makes the gap for the ram slide uneven, and the slide becomes uneven. In addition, there is a problem that strict precision control must be performed over a long processing time in order to obtain a compatible part having no processing distortion.

Accordingly, the present invention has been made in view of the above problems, and has as its object to provide a hoop material cutter capable of reducing the number of parts and smoothing the ram, and capable of high-precision machining.

[0005]

In order to achieve the above object, a moving blade fixed to a ram that reciprocates while sliding between a base frame and a subframe is provided. In the hoop material cutter that cuts the hoop material between the fixed blade fixed to the, the spacer that keeps the gap that the ram can slide between the base frame and the sub-frame is separated from the base frame and the sub-frame, It has a three-layer structure of a base frame, a spacer, and a sub-frame, and is formed by integrally casting the pacer into a square ring along the periphery of the base frame or the sub-frame.

According to the first aspect, since the spacer is separated from the base frame or the subframe and is integrally cast into a square ring, distortion is hardly generated at the time of processing, and processing can be performed with high precision. Each of the sub-frame and the spacer can be separately mass-produced, thereby improving productivity. This makes it possible to reduce the number of parts.

[0007] When a thick steel plate is used as the material of the spacer and is formed into a rectangular ring shape by welding, internal stress is generated by welding, and this internal stress appears as distortion during processing. This makes it difficult to perform high-precision processing as compared with a material that is integrally cast.

[0008]

Embodiments of the present invention will be described below with reference to the drawings. 1 and 2 relate to an embodiment of the present invention. FIG. 1 is a sectional view of a hoop material cutter, and FIG. 2 is a perspective view of a spacer.

Referring to FIG. 1, a hoop material cutter according to the present invention is provided with a base frame 20 and a sub-frame 21 having a substantially rectangular plate shape, and a spacer 25 between which a ram 22 is slidable. Frame 2
1 and the spacer 25 form a three-layer structure.

The spacer 25 is integrally cast in a rectangular ring shape along the periphery of the base frame 20 and the sub-frame 21, and the ram 22 slides smoothly between the base frame 20 and the sub-frame 21 without play. It is processed to be thicker than the ram 22 by the amount of the obtained gap.

A moving blade 18 is fixed to an end of the ram 22 with a bolt 27, and a fixed blade 19 is fixed to an open end of the sub-frame 21 with a bolt 28. And the spacer 25 is a bolt 2
6, three sheets are integrally fixed by simultaneous tightening.

A motor 23 is fixed to the lower surface of the base frame 20. The motor 23 is fitted on the motor shaft 23a via the eccentric cam 24 on the ram 22, and the ram 22 is rotated via the eccentric cam 24 by the rotation of the motor 23. It is configured to reciprocate while sliding between the frame 20 and the sub-frame 21, and the hoop material is cut between the moving blade 18 and the fixed blade 19 that reciprocate.

Reference numeral 29 in the figure denotes a hopper for supplying a hoop material, which is fixed to the end of the ram 22 together with the moving blade 18 and reciprocates with the ram 22.

As described above, since the base frame 20, the sub-frame 21, and the spacer 25 are separately separated parts, mass production can be performed for each part. Therefore, it is possible to perform processing with high accuracy with extremely little generation of processing distortion.

[0015]

According to the present invention, the base frame, the sub-frame, and the spacer are configured in a three-layer structure in which each is separated, and the respective parts can be mass-produced to improve the productivity. .

Further, since the spacers are integrally cast in a rectangular ring shape, processing distortion is extremely small and high precision processing is possible.

Thus, it is possible to form a gap required for the ram to slide smoothly without play.

[Brief description of the drawings]

FIG. 1 is a sectional view of a hoop material cutter according to Embodiment 1 of the present invention.

FIG. 2 is a perspective view of a spacer.

[Explanation of symbols]

 Reference Signs List 18 moving blade 19 fixed blade 20 base frame 21 subframe 22 ram 23 motor 24 eccentric cam 25 spacer 26, 17, 28 bolt

Claims (1)

[Claims] 1. A hoop material cutter for cutting a hoop material between a moving blade fixed to a ram that reciprocates while sliding between a base frame and a subframe, and a fixed blade fixed to the base frame. , A spacer that keeps the space where the ram can slide between the base frame and the subframe,
It is separated from the base frame and the sub-frame to form a three-layer structure of the base frame, the spacer and the sub-frame, and the pacer is integrally cast into a square ring along the periphery of the base frame or the sub-frame. And hoop material cutter.