SU1602597A1 - Arrangement for fixing sheet material in the die - Google Patents

Abstract

The invention relates to the processing of metals by pressure, in particular to devices for fixing sheet material in a die. The purpose of the invention is to improve the accuracy of fixation and expansion of the possibility of fixation. The device comprises a lower plate 1 with a matrix 2, on which the stop-clamp 4 is pivotally mounted, made in the form of a lever, spring-loaded with a spring 5, interacting with a pin 6, fixed in the lever. To limit the return stroke of the lever, a stopper is installed in the form of a rod 12 having an inclined surface for interaction with the stop-clamp and a groove spring-loaded 14 relative to the spring-loaded spring 16 of the pusher 15. The latter is located in the holder 17 fixed on the upper plate 18. For fixing the rod in the upper position, a latch 19 is located in the matrix, for the release of which from the rod groove and free lowering it into the lower position under the action of the pusher 15 a wedge 23 is fixed in the holder 17. P. f-ly, 9 ill.

Description

The invention relates to the processing of metal pressure, in particular to devices for fixing sheet material B stamp about

The purpose of the invention is to increase the point of fixation and the expansion of the possibility of fixing

FIG. The device is shown, general view 5 in FIG. 2. - view A in FIG. 1; Fig. 4, fig. 4, arrangement in the open position, general VID1 in Fig. 5 and 6, view B in Fig. 4 (the moment of fixation of the workpiece, and the moment when the workpiece has not yet been laid, respectively); Fig 7 - section on Srig.b; on Fig - section DD, ka on fig 9 - remote element of Fig, 8,

A device for fixing sheet material in a stamp comprises a base with a matrix fixed on it. 25, on which axis 3 is installed, 4, implemented in the form of a lever podzhshuinennogo spring kinoy 5, interacting with the pin 6} is fixed - .HbUvi in the lever 4

The lever 4 has at one end a fixed surface E, and at the other, a clamping surface W, which are interconnected by means of a pull 7 installed in a threaded hole made in the lever perpendicular to the clamping surface and fixed on one side by a nut 8, on the other hand it is hingedly connected with the help of a finger 9 with a separate element with a clamping surface W,

A guide bar 10 and a guide 11, B last are fixed to the matrix with the possibility of reciprocating movement. A part of the lever with a clamping surface W 5 is placed.

To limit the backward movement of the lever B, a 2p rod has an inclined surface (conical working part) for engagement with the lever 4 and an annular groove 13 °. The rod 12 is spring-loaded 14 "

The pusher 15 is spring-loaded in a direction opposite to the rod by a spring 16 and is located in a holder 7 fixed to the upper plate 18. In the matrix there is a cylindrical retainer 19 with two flats 20, spring-loaded 21 in the direction 1SH9

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parallel to the plane of rotation of the levers, and installed with the possibility of interaction with the said groove 13 of the rod 12, while the latch 19 is installed with the possibility of interaction of one lip with the rod 12 and the other with the pin 22 fixed in the matrix 3

To release the retainer 19 from the groove 13 of the rod 12 and freely lower the rod 12 to the lower position under the action of the pusher, the end of the retainer 19 has an end bevel for interacting with a wedge 23 fixed in the holder of the upper plate,

The working part 3 of the rod 12 is made conical. The drawing also shows the blank 24.

The device works as follows

In the initial position, the lever 4 is pressed by the spring 5 and partially overlaps the hole in which the rod 12 is placed, in that the rod 12 faces with the end face 4 of the lever 4 and cannot escape from this hole. When applying the workpiece 24 to the thrust surface E of the lever 4, the latter rotates around the axis 3 and, overcoming the force of the spring 5, with the smooth surface W presses the workpiece against the guide bar 10, while the lever | 4 releases the hole in which the rod 12 is placed and the latter under the action the spring 14 rises up and the surface Ж fixes the lever 4, limiting its reverse course. At this time, the axes of the groove 13 of the rod 12 and the hole in which the latch 19 is placed coincide and the latch 9. enters the groove 13, locking the rod 12o

As the top plate 18 moves down, the pusher 15 rests on the rod 12, and since the latter is fixed BaHj, the pusher 15 stops, compressing the spring 16 "

At the end of the stroke of the upper plate 18 DOWN, the wedge 23, interacting with the latch 19, displaces it, while the latch 19 due to the flies 20 comes out of engagement with the rod 12 and the rod 12 under the action of the pusher 15 is set below the plane of the matrix 2

During the course of the upper plate 18 upward, the wedge 23 releases the clamp 19 which, under the action of the spring 2, cannot be mo / 5 .76 g

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Claims (2)

Claim 1. An apparatus for fixing the sheet material in a die comprising a base matrix with a guide bar and a spring-loaded lever mounted on the axis of the pivotally, one arm of which is the end-face abutment, and the other side · _I holder, characterized in that, in order to increase accuracy of fixation, it is equipped with a mechanism for fixing the position of the said lever, made in the form of a fixed pin installed in the matrix, a rod with a conical working part and an annular groove, spring-loaded in the direction, perpendicular cular plane of rotation of the lever, the cylindrical latch with two lateral flattenings and socket bevel disposed between the stationary pin and the rod 15, and spring-loaded in a direction parallel to the plane of rotation of the lever and ustanovlen- GOVERNMENTAL ¹ in the upper plate and the spring-loaded wedge pusher, wherein the pusher 20 installed with interoperability. with the end face of the rod installed in the matrix and spring-loaded in the direction opposite to it, and the wedge is installed with the possibility of interaction with the end bevel of a cylindrical retainer installed in the matrix. 2 "The device according to π. 1, it is noteworthy that, in order to expand the possibility of fixation, the part of the arm of the lever serving as a side clip is made as a separate element connected to the lever arm pivotally and mounted with the possibility of adjusting the distance between it and the shoulder the lever on which it is mounted " Figure 2 r-r Dd twisted FIG. in