SU60306A1 - Rubber stamped to transfer pressure to sheet metal - Google Patents

Description

Punches are already known in the industry for cutting out parts in which rubber is used to transfer pressure to the sheet to be stamped.

The present invention improves these known stamps in that, under the sheet metal being punched, the knife-template used for cutting a product is provided, besides the usual cutting edges, with working parts in the form of sleeves protruding above the upper surface of the template. Due to this position of the sleeves, the cutting edges of which are attached to a corresponding shape, it is possible not only to punch holes in the material cut by the template, but also to bend the edges of these holes.

A feature of this stamp is that the frame with rubber is located under the knife frame. As is known, a frame with rubber is usually attached to a press ram. In this case, the tire sags and often falls out. The position of the rubber under the knife-copier on the press table completely eliminates this drawback.

parts of the stamp with rubber in it.

The lower part of the stamp (Figs. 1 and 2) consists of a plate which, on the nips 5, strengthened a knife-template 2 with cores 4 and bushings 3 protruding above the upper surface of the template. Pattern 2 has a beveled edge around the contour. The sleeves 3 have a sharp inner edge and a rounded outer edge, which transforms into a bevel.

During “the work time, the holes are cut down on the inner edge of the sleeves 3, and the edges of the edges are cut out on the outer edge. The outer edge of the plate 2 is used to cut the product, and the center pins 4 are used to extrude recesses into the parts, if this is required by the process of processing the part.

As shown in FIG. 3, rubber 6 is placed in frame 7 mounted on the press table. The material being stamped 8 is placed on the rubber, and a template 2 is placed on it. A metal plate serves as a punch of such a stamp. The inner edge of the frame 7 is rounded.

Subject invention

Claims (2)

1. A stamp using rubber to transfer pressure to the sheet metal to be stamped, which is required. This is because, in order to simultaneously cut through the “flanging of the edges,” the sleeves 3 are used, projecting above the top the surface of the knife-template 2 located below the sheet metal being punched, on which the part is being cut down, 2. The form of the stamp according to claim I, characterized in that under the knife-template 2 there is a frame with rubber, placed on the press table.