SU1606236A1 - Die for sheet stamping - Google Patents

Abstract

The invention relates to the processing of metals by pressure, in particular to a die tooling. The purpose of the invention is to improve ease of operation. On the top plate 1 of the stamp mounted matrix 2 and the clamp-ejector, made of composite plates 3 and 7, between which is placed an elastic ring 8. In each of the plates 3 and 7 there is a through hole. A check valve 4 is installed in the through-hole of the plate 3. A punch 11 and a clamping puller 12 are located on the bottom plate 10. The workpiece is laid on the puller 12 and the cutting plate 13 is cut down during the upper plate 1. When cutting, the elastic ring 8 is compressed condition. When the upper plate 1 reaches its extreme upper position, the elastic ring 8 expands, the air pressure in the cavity of this ring becomes less than atmospheric, and the cut product 13 remains on the plate 7, pressed against its surface by the force of atmospheric pressure. 2 Il.

Description

The invention relates to the processing of metals by pressure, in particular to technological die tooling.

The purpose of the invention is to improve the usability

The figure shows a die for cutting in the extreme upper position, a cut J in Fig. 2 is a die for drawing in the extreme upper position, a cut ,.

The punching die (Fig. 1) contains a movable upper plate 1, to which the matrix 2 is cracked with its base, in the working window of which there is a pressing-ejector, made composite in height in the form of interconnected with the possibility of relative displacement of two plates In the inner the plate 3 has a through hole; at its end there is a check valve, for example, in the form of a ball 4, ground to the conical hole, a spring 5 and a threaded plug b with an air outlet

A through hole is made in the outer plate 7 of the pusher. Between the plates 3 and 7 a ring 8 is installed of splashed material. Through the hole in the upper plate 1, the pusher 9 transfers the pushing force from the press (not shown) to the ejector

On the fixed plate 10 of the punch, there is a punch 11 and a spring-loaded puller J2., The cut product is indicated with the position 13

The stamp works as follows

The workpiece is placed on the puller 12. When lowering the top plate 1, the product is cut down between the cutting edges of the punch 11 and the 2 o matrix. The product is pushed into the working hole of the matrix, lifts the outer ring 7 and compresses the elastic ring 8 o. located in it is compressed, displaced through the hole in the inner plate 3, raises the spring-loaded ball 4 of the check valve and through the hole in the stopper 6, in the top plate 1 and the pusher 9 goes into the atmosphere o. Air pressure in the cavity of the ejector is reduced and the ball 4 under the action of the spring 5 closes the hole in the inner plate 3.

When the upper plate 1 moves upward, the matrix 2 moves away from the punch 11,

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The puller 12 removes waste from the AND punch and the product 13 remains in the matrix. expanding, the cavity, the rings increase in volume, the air pressure becomes less than atmospheric. As a result, the cut-out product 13, after being pushed out of the matrix 2, remains on the plate 7, pressed against its surface by the force of atmospheric pressure from the place of end act elastic ring 8

with plates 3 and 7 of the ejector, as well as the point of contact of the surface of the product 13 with the working end of the ejector, are sealed with an oil film

The force of atmospheric pressure that holds the product 13 on the ejector depends on the magnitude of the discharge in the ejector cavity, proportional to the amount of deformation of the elastic ring 8, established experimentally depending on the design or technological characteristics of the product (material, shape and todo)

Fig. 1 shows an example of the use of the proposed technical solution in a stamp for stretching hollow articles. The work of the stamp in Fig. 2 is similar to the work of the stamp in Fig. 1.

Formulas

the invention

A stamp for sheet metal stamping containing interacting working tools, each of which is fixed on one of the stamp plates, as well as located coaxially to one working tool with the ability to interact with the working end of the other working tool, a clamp made in the form of a plate with a through hole and provided with means for the resulting part, having an elastic element and a check valve installed in the through-hole of the plate and connecting the cavity in the elastic element to the atmosphere, excl chayuschiy- the fact that, in order g1ovsh1eni convenience in operation, the pressing plate is formed integral height (in the form of two parts interconnected by a fuss, and an elastic member is

these parts of the plate.

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Claims (1)

Claim A stamp for sheet stamping containing interacting working tools, each of which is fixed to one of the plates of the stamp, and also located coaxially with one working tool with the ability to interact with the working end of the other working tool, a clamp made in the form of a plate with a through hole and equipped with means for holding the resulting parts having an elastic element and a check valve installed in the through hole of the plate and connecting the cavity in the elastic element with the atmosphere, I distinguish this in that, in order to increase the convenience in operation, the pressure plate is made integral in height <in the form of two parts connected with each other | 5 1606236 ^{6 with the} possibility of relative movement in the form of a ring placed between the interface, and the elastic element is made by these parts of the plate.