RU56230U1 - DEVICE FOR CUTTING PREPARATIONS AND CUTTING-PUNCHING DETAILS BY ELASTOMER - Google Patents

Abstract

A device for cutting a workpiece and cutting-punching a part with an elastomer relates to the field of metal forming, in particular sheet metal stamping, and can be used to simultaneously cut a workpiece and cut a part, punching holes and grooves in one press stroke. The essence of the utility model: a device for cutting a blank of cutting-punching a part with an elastomer consists of a flat striker, an electromagnetic plate, a container in which the elastomer (polyurethane or rubber) is located, a metal plate and an elastomer sleeve fixed by a pin. 3 ill.

Description

A device for cutting a workpiece and cutting - punching a part with an elastomer relates to the field of metal forming, in particular sheet stamping, and can be used to simultaneously cut a workpiece and cut a part, punching holes and grooves in one press stroke.

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 for the manufacture of parts by cutting from a piece of workpiece containing a flat firing pin, a container with a cavity in which the elastomer and the metal plate are located (Khodyrev V.A. Design, manufacture and operation of dies with polyurethane / Edited by A.A Pozdeeva. - Perm: Perm Book Publishing House, 1975, p. 220, Fig. 85).

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 labor productivity by cutting blanks and cutting - punching

details in one press stroke.

The problem is solved due to the fact that in the proposed device for cutting a workpiece and cutting - punching a part with an elastomer containing a flat striker, a container with an elastomer in it and a metal plate, according to a utility model, an electromagnetic plate is fixed on a flat striker, the container is additionally made a cavity of a smaller diameter with the formation of a ledge, in which a sleeve of elastomer is mounted, fixed by a pin, and a metal plate is located on the sleeve of elastomer.

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 flat striker 1 with an electromagnetic plate 2, to which a notched template 3 is attached. A strip of material 4 is mounted on an elastomer 5 enclosed in a container 6. A metal plate 7 lies on an elastomer sleeve 8, which is fixed by a pin 9.

The device operates as follows. A strip of material 4 is fed through an elastomer 5 enclosed in a container 6. (FIG. 1). After turning on the working stroke of the press of the striker 1 with an electromagnetic plate 2, to which the cut-out template 3 is attached, goes down. To accurately align the inner sharp edge of the container 6 with the outer sharp edge of the electromagnetic plate 2, 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 blank is cut from a strip of material. In this case, the elastomer 5 is lowered until the metal plate 7, on which the elastomer 5 rests, drops all the way into the ledge of the container 6. The sleeve of the elastomer 8 is installed so that its compression occurs in the most natural way, then

is in both directions (figure 2). To fix the sleeve from the elastomer 8 there is a centering pin 9. Thus, under the action of the cutout template 3 in the closed volume of the container 6, the elastomer 5 presses the edges of the cut blank to the electromagnetic plate 2 and pushes its central part into the hole of the cutout template, and the sharp edge of the cutout template 2 is pressed into the material of the workpiece 3, cutting out the part from it.

At the end of the working stroke of the press of the firing pin 1 with an electromagnetic plate 2, to which the cutout template 3 is attached, rises, the sleeve 8 pushes the elastomer 5 through the plate 7 to its original position, the strip of material is removed (figure 3), and the finished part with the departure from the cut and punching can be easily removed from the open surface of the elastomer 5.

Claims (1)

A device for cutting a workpiece and cutting-punching parts with an elastomer, containing a flat head, a container with a cavity in which the elastomer and a metal plate are located, characterized in that an electromagnetic plate is fixed on the flat head, a smaller diameter cavity is made in the container to form a step, in which has an elastomer sleeve fixed with a pin, and a metal plate is located on the elastomer sleeve.