SU48105A1 - Stamp for making wire carbines - Google Patents

Description

The production of carbines for coupling cufflinks is currently being performed, usually in three steps. The first step is to prepare pieces of wire of a certain length by cutting it into specially adapted scissors. Next, the prepared pieces are folded in a known manner and, finally, the folded products are refined. The proposed stamp is intended to make the same carbines in one operation.

In FIG. 1 and 2 depict punches in two projections, and FIG. 3 and 4 matrix.

In the base 22 of the stamp, the lower part 73 of the stamp is inserted with a through hole to the size of the part. Starting from the top plane, the hole goes down the cone, so that a gradually forming hole is formed. On the upper edge of the bevel of part J3, a wire passes through the screw 25 and passes through the channel 4 between the movable knives 2-4 of the scissors 24. The knives are driven by the wedges 30, 31, fastened in the holder 27 by screws 33, Wedge 31, the entrance to the guide slot //, with its bevelled end, horizontally forwards the knife 2 for cutting the wire. Second wedge with intermediate wedge / acts on

Izh 4 vertically down, freeing the wire from the groove for folding. The arrangement of the knives with respect to the axis of the die is such that an oblique cut of the wire is made, which subsequently forms a more reliable connection in the product. The bend is made on the protrusion 34 of the mandrel having the shape of the die opening 35 in cross section.

Punson, sinking into the matrix with his shoulder, rests on the wire located on the edge of the matrix and drives it down the bevels of the forming hole, bending it around its protrusion 34, and pushes it through the hole of the matrix. Returning back, the product is removed from the punch by the sharp edges of the bottom of the die.

The subject matter of the invention.

A punch for making carbines from wire in one stroke of a punch, characterized in that its upper movable part consists of two wedges 30, 31 and mandrels with a protrusion 34, and the lower part / J of scissors 24, one knife 2 of which under the action of a wedge 31 cuts the wire, and the other - # under the action of the wedge 30 is lowered by the time of wire twining around the protrusion 34 of the mandrel as it passes through the gradually tapering hole 35. According to B.G. to Sverdlov's author No. 48105

fig

fig.Z

J3

341

O 1 I O

H -25

2

thirty

FIG. 2

31

V-T

F-UTIU

7

33

l3f