SU1202665A1 - Die for punching holes by means of elastic medium - Google Patents

Description

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The invention relates to the processing of metals by pressure, in particular to dies for punching holes with elastic medium.

The purpose of the invention is to improve the quality of the parts produced.

Figure 1 shows the proposed stamp, section; in fig. 2 - view of the non-moving part of the stamp; figure 3 - node I in figure 1, (the distribution valve stamp p working position), figure 4 - the same in the initial position (compressed air supply into the working cavity matritz, terminated).

The stamp contains the container 1, elastic medium 2, mounted on the movable plate 3,.

Between the movable plate 3 and the container 1 installed elastic strip 4. In another part of the stamp. mounted fixed composite plate 5 with a cavity 6 and a system of channels. Between parts 7 and 8 of the composite plate 5 an elastic element is installed, made in the form of a membrane 9 with holes 10. The matrix 11 with working holes 12 is fixed to part 7 of the composite plate 5. The distribution valves are filled in the form of rods 13 mounted in the indicated channels. One end of each of the valves is located in the working holes 12 at the level of the mirror of the matrix 11, and the other is installed with the possibility of interaction with the membrane 9. In part 8 of the composite plate 5

026652

There is no additional channel to connect to a compressed air source. Between, parts of the composite plate 5 are installed gaskets 14 and 15. On

5 rods x 13 grooves 16 are made of different heights. In the container 1 there is a hole in which a screw 17 is installed. The material to be processed is indicated by the numeral 18

10 The stamp works as follows.

When the movable part of the stamp moves downwards, the elastic medium 2 acts on the material being processed IB mounted on the matrix 11. Separable

15 portions of the material being processed 18, lowering into the working openings 12 of the matrix 11, act on the rods 13, moving them down toward the open. At the same time, compressed air from cavity 6 through the grooves 16 enters the working opening 12 of the matrix 11, exerting a back pressure on the material being processed. Due to the fact that the height of the grooves of the 16 valves is different,

25 compressed air enters the corresponding working holes 12 of the matrix 11 according to the appropriate program.

At the end of the working stroke, all valves are actuated, and during the return stroke

30 of the movable parts of the punch compressed air removes waste, from the working openings 12 of the die 11. The membrane 9 returns the valves to their original condition, blocking access of the compressed air to

with working holes 12.

The invention improves the quality of the parts produced.

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Claims (1)

STAMP FOR PUNCHING HOLES WITH AN ELASTIC ENVIRONMENT, containing a container with an elastic medium mounted in one part and a plate installed in another part with a cavity and a system of channels associated with it, control valves made in the form of rods mounted in these channels and a matrix, working the holes of which are connected with channels, characterized in that, in order to improve the quality of the parts obtained, it is equipped with an elastic element with holes located in the cavity of the plate, one end of each of these valves it is laid in the working holes at the level of the matrix mirror, and the other is installed with the possibility of interaction with the elastic element, while an additional channel is made in the plate for connecting the cavity to a source of compressed air. y d SU ,, „1202665 1 1202665