SU761086A1 - Arrangement for fixing blank in the working zone of die - Google Patents

Description

The invention relates to the processing of metals by pressure, in particular to the feeding and fixing devices, can

be used to fix the material in the working area of the stamp. five

A device for fixing the material of flat blanks on the working position of the stamp, containing the matrix attached to the bottom plate of the stamp. On the mirror of the matrix are mounted fixing ¹⁰ strips located at a distance from one another, less than the width of a flat blank, which are spring-loaded with buffer rubber inserts perpendicularly

to the longitudinal axis of the stamp. Rubber inserts have the same hardness and are attached to the stop plates with screws that can move freely in the holes of the stop plates. The working surface of each of the fixing plates 20 is made with a bevel inclined so that the distance between the two planks increases as the matrix is removed from the mirror [11 The disadvantages of the known device is that the removal of the part is difficult, and when fixing the workpiece with a burr inaccurate fixation, in addition, when the rubber is worn, there may be an unequal compression force on the fixing bars, which will give 30

2

accuracy in fixing the workpiece at the working position of the stamp. In the manufacture of parts from a sheet of large-sized material, its deflection is possible, this will lead to inaccuracy of fixation and to an error in the manufacture of parts.

It is also known a device for fixing material at a working position of a stamp, comprising retainers located on both sides of the working position and interacting with the workpiece, one of which is fixed on a slider located on the lower plate of the stamp and set in motion in the direction perpendicular to the direction of movement of the workpieces from the top plate stamp through the wedge [2].

A disadvantage of the known device is the lack of accuracy of fixation of workpieces on the working position of the stamp.

The aim of the invention is to eliminate this drawback.

This goal is achieved by the fact that the device is equipped with an additional slide set in the direction perpendicular to the direction of movement of the workpiece from the wedge, mounted on the lower plate of the stamp and passing through the specified slide.

Wedge can be mounted "on the top plate of the stamp with the possibility of verti761086

3

the shaft movement and is spring-loaded relative to the top plate.

FIG. 1 shows the proposed device, a general view (plan view); in fig. 2 - section A — A of FIG. one.

Device for fixing blanks in the working area of the stamp containing the wedge 1 (or cone) mounted on the top plate 2 of the stamp can be moved in the vertical direction and spring-loaded spring 3.

On the bottom plate 4 of the stamp are mounted the sliders 5, on which the protrusions 6 are made, interacting with the material 7 fed into the working zone of the stamp. The sliders 5 are spring-loaded springs 8. On the sliders 5 are wedge supports 9 interacting with the wedge 1.

On the bottom plate 4 is also installed spring-loaded springs 10 slider 11, on which the protrusions 12, interacting with the feed material 7, and wedge bearings 13, interacting with the wedge 1.

On the upper plate 2, the punch 14 is fixed, and on the lower plate 4, the guide rails 15 and the stops 16 are mounted. The slider 5 is located under the slider 11.

A device for fixing the material in the working area of the stamp works as follows.

Material 7 is fed into the working area of the stamp between the guide bars 15 to the stops 16. Then, under the action of a drive (not shown), the upper plate 2 moves downwards. The wedge 1 with its working surface acts on the wedge supports 9 of the slider 5 and the wedge support 13 of the slider 11, sets the slider 5 and 11 into motion.

. In this case, the sliders 5 move to the left (Fig. 2), and the sliders 11 move to the right, with their projections b and 12, respectively, act on the material 7 and fix it on the working position of the stamp. Upon further lowering of the top plate 2 of the stamp wedge 1, compressing the spring 3, remains motionless, and the punch 14b 4

acts on the material 7 and produces shaping.

Then the upper plate 2 moves up, while the wedge 1 under the action of the spring 3 is pressed against the wedge supports 9 and 13 and remains stationary.

Then the wedge moves up under the action of the top plate, out of contact with the wedge supports 9 and 13.

The sliders 11 under the action of the springs 10 move to the left, and the sliders 5 under the action of the springs 8 move to the right.

The projections 6 and 12 release material 7. Then the cycle repeats.

Claims (2)

Claim 1. Device for fixing blanks in the working area of the stamp, containing located on both sides of the working position and interacting with the workpiece clamps, one of which is fixed on the slider, located on the lower plate of the stamp and 'driven in a direction perpendicular to the direction of movement of the blanks from the upper stamp plate through a wedge, characterized in that, in order to improve the accuracy of fixing blanks at the working position of the stamp, the device is equipped with a movement in a direction perpendicular to NIJ move workpieces from the wedge, more polzushkoy mounted on the lower die plate and extending through said polzushku and the other retainer is secured to additional polzushke. 2. Device by π. 1, characterized in that the wedge is mounted on the top plate of the stamp with the ability to move in the vertical direction and is spring-loaded relative to the top plate.