RU58960U1 - DEVICE FOR CUTTING-PUNCHING OF PARTS BY ELASTOMER - Google Patents

Abstract

A device for cutting - punching parts with an elastomer relates to the field of metal forming, in particular for sheet stamping, and can be used for cutting parts, punching holes and grooves, as well as for shallow molding.

The essence of the utility model: a device for cutting-punching parts with an elastomer consists of a container with an elastomer (polyurethane or rubber) and a metal plate, a sub-stamp plate with holes in which inserts are made of elastomer with a conical upper and lower parts on which inserts are mounted to fix the cut-out template. And on the protrusions of the sub-die plate, an elastomer sleeve is mounted on which a metal washer is mounted.

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Description

A device for cutting - punching parts with an elastomer relates to the field of metal forming, in particular for sheet stamping, and can be used for cutting parts, punching holes and grooves, as well as for shallow molding.

A device is known for cutting blanks and punching parts, consisting of a rigid punch and a rigid matrix (Romanovsky V.P. Handbook of cold stamping. - 6th ed., Revised. And add. - L .: Engineering. Leningrad. -nie, 1979, p. 354, tab. 165).

The disadvantage of this device is the complexity of its manufacture, as it requires punches and dies for cutting parts along the contour and punching holes, and the high cost of production.

Closest to the proposed device is a device designed for cutting parts from sheet materials, containing a container with an elastomer and a metal plate, a sub-stamp plate (Komarov A.D., Romanovsky V.P. Cutting parts with polyurethane. - L .: LDNTP, 1986, p. 13, fig. 3).

This device has disadvantages, which are that it does not allow you to cut the workpiece along with cutting parts. Therefore, blanking is carried out separately on additional dies, and only after that a part is cut from the blank on this device. This leads to an increase in equipment costs and time for the manufacture of parts, which reduces labor productivity.

The task: to develop a device that allows to increase the utilization of the material due to a significant reduction in waste when cutting the outer contour of the part, since cutting - punching of parts can be carried out without additional cutting operations.

The problem is solved due to the fact that in the proposed device for cutting - punching parts with an elastomer containing a container with an elastomer and a metal plate, the stamp plate, according to the utility model, holes are made in the stamp plate in which inserts of elastomer with conical upper and lower are installed the parts on which the inserts are installed to fix the cut-out template, and on the protrusions of the sub-stamp plate there is an elastomer sleeve on which a metal washer is mounted.

The essence of the utility model is illustrated by drawings, in which Fig. 1 shows a sectional view of the device at the initial stage, in Fig. 2 - in an intermediate stage, in Fig. 3 - at the final stage of the stamping process.

The proposed device consists of a container 1 with an elastomer 2 and a metal plate 3, which during the press stroke presses on a strip of material 4 and a cutout template 5 fixed by inserts 6 and mounted on a sub-stamp plate 7, into which inserts from elastomer 8 are pressed in. A metal washer 9 lies on a sleeve of elastomer 10, which is mounted on the protrusions of the sub-stamp plate 7.

The device operates as follows. A cut-out template 5 is mounted on the sub-stamp plate 7 and centered by the inserts 6 installed in the sub-stamp plate 7. A strip of material 4 is fed along the cut-out pattern 5 (Fig. 1). After turning on the working stroke of the press, the container 1 lowers down. To accurately align the inner sharp edge of the container with the outer sharp edge of the notched template, as well as to accurately feed the strip of material, this device is mounted on a universal stamping block containing an upper plate with guide bushings and a lower plate with guide columns. The part is cut down along the contour from a strip of material. At the same time, the elastomer 2 pushes the workpiece into the holes of the cutout template 5, while the inserts 6 are lowered, which rely on inserts from the elastomer 8, acting as springs and having conical upper and

lower parts so that the inserts can deform and allow the liners 6 to move down. In addition, when lowering the container, the sleeve of elastomer 10, with a metal washer 9 mounted on it and with a strip of material, is compressed and lowered. Thus, there is a cutting part with the simultaneous punching of all holes (figure 2).

At the end of the working stroke of the press, the container 1 rises. A sleeve of elastomer 10 through a metal washer 11 extends a strip of material, and inserts of elastomer 8, unclenching, lift the liners 6, and with them the waste material from punching holes (figure 3). After that, the finished part and the strip of material are easily removed.

Claims (1)

A device for cutting-punching parts with an elastomer, containing a container with an elastomer and a metal plate, a punched plate, characterized in that the punched plate has openings in which inserts of elastomer with a conical upper and lower parts are installed on which inserts are used to fix the cut-out template and an elastomer sleeve is mounted on the protrusions of the sub-die plate on which the metal washer is located.