SU1230735A1 - Die for pressing by squeezing-out - Google Patents

Description

The invention relates to the processing of metals by pressure, in particular to the design of dies for cold volumetric deformation of metals.

The aim of the invention is to increase productivity by improving the conditions for removing stamped parts.

FIG. 1 shows a stamp with a locking unit t g, made in the form of a spring-loaded lever; in fig. 2 - section AA in FIG. one; on fig. 3 - a stamp with a knot, stoppers r in the form of a power cylinder.

The stamp for extrusion (Fig. 1) contains mounted on the top plate 1

the semi-matrix 8 enters the container 16, is centered and, in contact with the lower matrix 17, forms a working cavity. Upon further lowering of the upper plate 1, the spring 6 is compressed, the punch 2 deforms the workpiece 32, the metal fills the cavity, the pulls 5 lift, the conical part of the head squeezes the latches 13 to the side, turning from around the vertical axis 14. After the passage of the head pulls 5 to the upper the position of the locks 13 with the help of the springs 12 returns to its original position, preventing the return of the grades 5 to the initial lower position after the deformation of the workpiece 32 has been completed and the upper plate 1 has returned

punch 2 placed under it through the 15 original upper position. Otstampovanny disk 3 upper ejector 4, attached to the top plate 1 by means of t g 5 and spring-loaded springs b through the support ring 7 upper half-matrix 8. In the inner cavity, formed by the top plate 1 and attached to it with a lid 9 fixed in it with using nuts 10 centering sleeve 11, installed spring-loaded springs 12 (Fig. 2) on

at least two latches 13, the cycle is repeated, performed in the form of a two-arm lever, each of which can rotate around an axis 14 pressed into the upper plate 1. A container 16 is placed on the lower plate 15 of the stamp, in which the half-matrix 17 is placed, resting on the gaskets 18, 0 19 and 20. In the vertical through cavity of the semi-matrix 17 a counter-punch 21 is placed, supported on the gasket 20, in which the lower ejector 22 is located. The upper and lower semi-matrix is banded.

the part left in the cavity of the upper semi-matrix 8 is pushed out by means of the ejector 4 and the punch 2, which at the final stage of ejection with its tail conical part acts on the shoulder of the retainer 13, rotates it around the axis 14, as a result descend together with the upper half-matrix 8 to its original position. In the far Stamp with the nodes of the stopper of r, made according to the second variant, works in this way.

When the press ram moves down after touching the semi-matrix, the piston 23 begins to move upwards. The fluid displaced from the cavity 25 through the overflow (pressure) valve 29, which is adjusted to a certain pressure, is necessary so that the half-matrix, when the workpiece is deformed, does not open, passes into the accumulator 30, from where it passes through the non-return valve 31 26

In another implementation of the locking knots, the g stamp comprises a locking knot of the grids, made in the form of a ram cylinder with a piston 23, the rod 24 of which is a brace, 40 on which the upper half-matrix is suspended, and the piston cavity 25 and the schtokov cavity 26 the device 27, controlled, for example, the tail part of the punch 2 through

When the press ram moves down after touching the semi-matrix, the piston 23 begins to move upwards. The fluid displaced from the cavity 25 through the overflow (pressure) valve 29, which is adjusted to a certain pressure, is necessary so that the half-matrix, when the workpiece is deformed, does not open, passes into the accumulator 30, from where it passes through the non-return valve 31 26

In this position, the matrix remains in reverse, as the fluid in the rod cavity is locked by means of a check valve 31 and a closed distribution device 27. The movable part

the pusher 28, the overflow (discharge) valve 45 of the punch rises with the slider, the vial 29, the battery 30 and the backward nod through the punch 2 pushes the otplaka 31. stamped part, and at the end of the course the tail part of the punch 2 acts t g per -

This version works as follows

zom.

The billet 32 (mostly cold) is placed on the end of the counter-punch 21 into the cavity of the half-matrix 17. The upper plate 1 is in the upper starting position, the upper semi-matrix 8 is pressed out by springs 6 on the tons 5, which with their heads rest on the indented surface of the cover 9. top first

It opens onto the switchgear 27 (for example, directly by the pusher 28), as a result of which the liquid flows from the accumulator 30 and the rod cavity 26 into the piston cavity 25, and the piston 23 is lowered together with the half matrix to its original position. The switchgear 27 again returns to the closed state before commencing deformation after contact with the workpiece of the punch and its movement upwards to the supporting disk 3. The control of the semi-matrix 8 enters the container 16, centers and, in contact with the lower matrix 17, forms working cavity. Upon further lowering of the upper plate 1, the spring 6 is compressed, the punch 2 deforms the workpiece 32, the metal fills the cavity, the pulls 5 lift, the conical part of the head squeezes the latches 13 to the side, turning from around the vertical axis 14. After the passage of the head pulls 5 to the upper the position of the locks 13 with the help of the springs 12 returns to its original position, preventing the return of the grades 5 to the initial lower position after the deformation of the workpiece 32 has been completed and the upper plate 1 has returned

starting upper position. Ostamped cycle repeats,

the part left in the cavity of the upper semi-matrix 8 is pushed out by means of the ejector 4 and the punch 2, which at the final stage of ejection with its tail conical part acts on the shoulder of the retainer 13, rotates it around the axis 14, as a result descend together with the upper half-matrix 8 to its original position. The cycle then repeats,

A stamp with locking knots t g, made according to the second variant, works in this way.

cycle repeats,

When the press ram moves down after touching the semi-matrix, the piston 23 begins to move upwards. The fluid displaced from the cavity 25 through the overflow (pressure) valve 29, which is adjusted to a certain pressure, is necessary so that the half-matrix, when the workpiece is deformed, does not open, passes into the accumulator 30, from where it passes through the non-return valve 31 26

yes the tail of the punch 2 impact

It opens onto the switchgear 27 (for example, directly by the pusher 28), as a result of which the liquid flows from the accumulator 30 and the rod cavity 26 into the piston cavity 25, and the piston 23 is lowered together with the half matrix to its original position. The switchgear 27 again returns to the closed state before the deformation begins, after contact with the workpiece of the punch and its movement upwards to the supporting disc 3. Distribution control 312307354

The lithe device 27, which is carried out from the limit switches, is located by an electromagnetic drive with electric signals received in the path of movement by the tail of the clock, which is supplied by a punch.

Aa

/five

FIG. 2

2.3 GW 26 25

Editor L. Povhan Order 2306/14

VNIIPI USSR State Committee

for inventions and discoveries

113035, Moscow, Zh-35, Raushsk nab. 4/5

Filnal PPP "Patent, Uzhgorod, st. Project, 4

Compiled by V. Karpychev

Tehred I. VeresKorrektor M. Samborska

Circulation 655Subscribe

Claims (3)

1. EXPLOSION STAMP, containing an upper plate with a half-matrix and a punch mounted on it using rods, with a shank with a conical lateral surface, and a lower plate with a half-matrix and a counter-punch, characterized in that, in order to increase productivity by improving the impact conditions For stamped parts, it is equipped with nodes locking rods in their upper · position. 2. The stamp on π. 1, characterized in that each node locking rods is made in the form of a spring-loaded two shoulders lever located in the upper plate with the possibility of rotation in a plane perpendicular to the axis of pressure of the stamp, and the interaction of one of the shoulders with the rod, and the other with the shank of the punch. 3. The stamp on π. 1, characterized in that each node locking rods is made in the form of a power cylinder located in the upper plate with a piston, the piston and rod cavities of which are interconnected by means of an adjustable _l body, overflow valve, accumulator § and check valve, while the rods are rigidly connected with pistons. SU ,,,, 1230735 Figure 1