SU1386333A2 - Bending die - Google Patents

Abstract

The invention relates to the field of metal forming, in particular, to the bending of sheet blanks, and makes it possible to increase the reliability of the tool. 1gamp contains a die, an ejector with levers - pullers (PC) and a punch. On the side surfaces of the punch, grooves are made for the PC and latches for fixing the PC in the grooves. During the bending process, the PCs enter into the slots and are fixed by means of latches. When raising the punch, the finished product is removed by simultaneously lifting the ejector. 5 il.

Description

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The invention relates to the processing of metals by pressure, in particular, to the bending of sheet blanks, and is an improvement to the stamp according to the main author. No. 730414.

The purpose of the invention is to increase the reliability of the stamp.

Figure 1 shows the stamp, the closed position; Fig, 2 - section. A-A in Fig.1 (open position); in FIG. 3, node I in FIG. 1, (closed position); in FIG. 4, the same, (open position); on fig.Z - type B on fig.Z.

The bending stamp contains an upper plate 1 with a punch 2 fixed on it. On the sides of the punch 2, grooves 3 are made with steps 4 whose surfaces are inclined to the outer surface of the punch 2. On the bottom plate 5, the matrix sections 6 and 7 are fixed and guides 8 Between sections 6 and 7 of the matrix is placed an ejector plate 9 mounted on springs 10 and having bevels 11 in the lower part. On the plate 9 pusher, on the axis x 12 mounted levers puller 13 with bevels 14, spring loaded 1 5.

The upper ends of the levers I3 pullers have steps 16 and 17. At the step 17, the side surface 18 is inclined towards the plane of the lever. In the plate 5, limiters 19 for moving the ejector plate 9 are also installed. On the opposite side surfaces of the punch 2, there are fixed lamellar spring latches 20 having a beveled portion toward 21 and a guide portion 2-2.

The stamp works as follows. The workpiece 23 is installed on sections 6 and 7. During the course of the press slide

(not shown) downwards, the levers 13, interacting with the beveled section 21 of the latch 18 20, enter the chamber with the guide section 22. As the piston moves further, the punch 2

There is a bend, and the ends of the levers fit into the grooves on the sides of the 3 punch. During the course of the punch upward, the inclined surfaces 18 of the step 17 of the levers 13 are in contact with the inclined

surfaces 4 of the punch 2, whereby the levers 13 hang on the punch, pull up the ejector plate 9 and remove the finished product from the die. At this moment thanks

the bevels 14 and under the action of the springs 15, the levers 13 unfold to contact with the guide section 22 of the latch 20 and remove the part from the punch 2. With further movement up

the levers 13 disengage from the guide portion 22 and rotate to their original position under the action of the springs, 15. After removing the product, the cycle is repeated,

The use of the invention will improve the reliability and safety of the work of the stamp by fixing the levers on the punch.

Claims (1)

The invention of the Bending stamp on the author, St. # 730414, I distinguish by the fact that, in order to increase reliability, it is provided with plate-shaped spring clips fixed to opposite side surfaces of the punch for fixing the levers-removers. fig.i 20 Q3l / t3 Si / dB L V 21 F1 / gA FIG. five