JP2003236631A - Absorber parts for hanging bolt of stripper frame of press die - Google Patents

Abstract

<P>PROBLEM TO BE SOLVED: To provide absorber parts for a hanging bolt with which the generation of noise, vibration, clearance and rust is prevented even when a thickness washer is abutted on the upper surface of a punch holder whenever the hanging bolt is upward moved and returned to the home position. <P>SOLUTION: An annular spot facing formed on the surface of a punch holder on which the thickness washer 3 attached just under the bolt of the hanging bolt 4 of the stripper frame of a press die abuts is formed and the absorber parts 1 are attached to the annular spot facing. The absorber parts consists of an impact absorbing material having thickness which is approximately equal to the depth of the annular spot facing and an outside diameter which is approximately equal to the outside diameter of the annular spot facing and a inside diameter which is larger 0.5-1.0 mm than the outside diameter of the hanging bolt. <P>COPYRIGHT: (C)2003,JPO

Description

Detailed Description of the Invention

[0001]

BACKGROUND OF THE INVENTION 1. Field of the Invention The present invention relates to an absorber component for a suspension bolt of a press die stripper frame.

[0002]

2. Description of the Related Art FIG. 3 is a front sectional view of a conventional press die. When punching a metal plate with a punch 6,
After the punch blade edge 61 has been inserted into the metal plate, the punch blade edge 61 is removed, but to prevent deformation of the metal plate and to facilitate punch removal, the upper surface of the metal plate is stripped by the stripper plate except the press punched portion. Pressed by 7.
After the punch 6 returns to the upper end position, the stripper plate 7 stops pressing and moves upward. The stripper plate 7 is attached to the stripper frame 8. The stripper frame 8 is guided by the sub-guide posts 9 and reciprocates linearly up and down. The stripper frame 8 is attached to the punch holder 21 by the hanging bolt 4, and the hanging bolt 4 is 1 to 2 m from the punch holder 21.
Move up about m. Immediately below the head of the suspension bolt 4, a quenched steel washer 3 is inserted and directly contacts the upper surface of the punch holder 21. The punch holder 21 is steel such as tool steel.

[0003]

However, each time the suspension bolt 4 moves upward by about 1 to 2 mm and returns to its original position, the kinematic washer 3 and the upper surface of the punch holder 21 come into contact with each other, but both are made of metal. Therefore, rust is generated, heat is generated, backlash is generated, and noise is generated. These problems are exacerbated especially at higher press speeds.

[0004]

The above-mentioned problems are caused by the absorber parts for the suspension bolts of the stripper frame for a press die according to the present invention, that is, the sequencer attached immediately below the bolts of the suspension bolts of the stripper frame for a press die. An absorber part to be attached to an annular pocket formed on the punch holder surface with which the washer comes into contact, the thickness of which is substantially equal to the depth of the annular pocket, and the outer diameter of which is approximately the same as the outer diameter of the annular pocket. This is solved by an absorber part for a hanging bolt of a press die stripper frame made of an impact absorbing material having an inner diameter larger than the outer diameter of the bolt by 0.5 to 1 mm.

Further, in a preferred embodiment of the present invention, the shock absorbing material is a resin,
An absorber component for a hanging bolt of a press die stripper frame according to claim 1, wherein the absorber component is one of carbon fiber-dispersed resin, glass fiber-dispersed resin, hard rubber, and urethane, or a material containing any one of these. Is.

[0006]

BEST MODE FOR CARRYING OUT THE INVENTION Embodiments of the absorber component for a suspension bolt of a stripper frame for a press die according to the present invention will be described in detail below with reference to the accompanying drawings.

FIG. 1 is a front sectional view near the head of a stripper frame suspension bolt according to an embodiment of the present invention.

On the upper surface of the punch holder, a ring-shaped counterbore 2 is formed around the through hole for the suspension bolt. The outer diameter D2out of the annular ring is the outer diameter D of the squeness washer 3.
Slightly larger than 3out. The depth of the ring ring is D2
Is.

FIG. 2 is a perspective view of the absorber component according to the embodiment of the present invention. The absorber part 1 has an annular shape, and the inner diameter D1in is the outer diameter D4ou of the bolt portion 41 of the hanging bolt 4.
0.5 to 1 mm larger than t, the outer diameter D1out of the absorber component 1 is slightly smaller than the outer diameter D2out of the annular trim 2, and the thickness t1 of the absorber component 1 is greater than the depth D2 of the annular trim 2. Slightly small. Therefore, the absorber component 1 can be housed in the annular trim 2, and the clearance between the inner diameter of the absorber component 1 and the bolt portion 41 of the suspension bolt 4 is designed to be 0.5 to 1 mm. The material is carbon fiber dispersed resin (CF resin).

The absorber part 1 is provided with three screw holes 11 penetrating from the upper surface 10 to the lower surface, and a screw fixing peg 12 for completely accommodating the head of a bolt (not shown) for screwing is formed. Has been formed. Therefore, the absorber part 1 has a circular ring trimming 2 on the upper surface of the punch holder.
The head of the bolt, which is fixed inside and is fixed to the screw, is located below the upper surface 10 of the absorber component 1, and the bolt for fixing the screw does not come into contact with the weight washer.

FIG. 4 is a perspective view of an absorber component according to another embodiment of the present invention. The absorber part 5 has an annular shape of the same size, but the center in the thickness direction is the metal 51, the upper part is the glass fiber dispersed resin (GF resin) 52, and the lower part is the resin 53. The upper part is hard, has no repulsive force, and is hard to crack, the central part is strong and is hard to crack, and the lower part is easy to absorb impact loads, and these properties are combined to form a composite material.

[0012]

According to the absorber part for the suspension bolt of the press die stripper frame of the present invention, since the absorber part made of the shock absorbing material is attached to the portion of the upper surface of the punch holder where the sikness washer comes into contact, Even if the cycle washer is repeatedly brought into contact, heat is not generated, rust does not occur, and the sound generated during punching is reduced.

Further, when the shock absorbing material is resin, carbon fiber dispersed resin or the like as in the preferred embodiment of the present invention, it is hard and has little repulsive force, and it is easy to absorb shock load and is hard to break. It can be used without replacement for a long time.

[Brief description of drawings]

FIG. 1 is a front cross-sectional view near a head of a stripper frame suspension bolt according to an embodiment of the present invention.

FIG. 2 is a perspective view of an absorber component according to the embodiment of the present invention.

FIG. 3 is a front sectional view of a conventional press die.

FIG. 4 is a perspective view of another absorber component according to the embodiment of the present invention.

[Explanation of symbols]

1 absorber parts 10 Top surface 11 screw holes 12 screw tightening 2 circular ring 21 punch holder 3 Cycles washers 4 bolts 41 bolt 5 absorber parts 51 metal 52 Glass fiber dispersed resin 53 resin 6 punches 61 cutting edge 7 Stripper plate 8 stripper frame 9 Sub guide post

Claims (2)

[Claims] Claim: What is claimed is: 1. An absorber component attached to a circular ring-shaped countersink formed on a punch holder surface, which is contacted by a washer mounted directly below a suspension bolt of a press die stripper frame. The outer diameter of the suspension bolt is about 0.5 to about 0.5 mm from the outer diameter of the hanging bolt.
Absorber parts for hanging bolts of press die stripper frames made of shock absorbing material with an inner diameter larger than 1 mm. 2. The shock-absorbing material is any one of resin, carbon fiber-dispersed resin, glass fiber-dispersed resin, hard rubber, urethane, or a material containing any one of them. Absorber parts for hanging bolts of press die stripper frame of.