SU782917A1 - Automatic stop to punching and progressive dies - Google Patents

Description

The invention relates to the field of cold metal forming and can be used in die-cutting and sequential dies as a preliminary stop. ’

Known automatic stop for felling ⁵ and nym successive dies having one end pivotally mounted to a spring-loaded scraper arm to a matrix, on the free end of which a projection cooperating with the cutting material

Known emphasis is unreliable in work.

The aim of the invention is to increase the reliability.

This goal is achieved in that the emphasis is provided with a latch for fixing the end with the protrusion in the upper position.

The latch can be made in the form of _Ά pivotally mounted in the puller with one End, spring-loaded in the horizontal plane and set in motion in this plane by the processed material of the additional lever, on the free end of which a leaf spring is fixed, interacting with the end of the lever, which carries the protrusion.

In FIG. 1 shows the proposed emphasis, General view; in FIG. 2 is a view along arrow A in FIG. 1.

The automatic emphasis on the punching and sequential dies contains a lever 3 fixed with an axis 1 in the groove of the puller 2 with a protrusion 4 at the end and with a protrusion 5. At the end of the lever 3, a wedge protrusion 6 is made, In the puller 2 about in the same groove using the axis 7 fixed with the possibility of rotation in the horizontal plane of the lever 8. At the end of the lever 8 is fixed a leaf spring

9. At the other end of the lever 8, a wedge protrusion 10 is made, the height of which is equal to the gap between the puller 2 and the lower part of the stamp (matrix). Position 11 denotes the processed material. The lever 3 is spring-loaded relative to the puller 2 in the vertical direction by a spring

...........-....... 3

12, and the lever 8 is spring-loaded relative to the puller 2 in the horizontal plane by the spring 13.

_a . Aromatic emphasis on punching. And a series of stamps works as follows.

When entering the dies, the workpiece (material) 11 acts on the wedge protrusion 10 with its leading edge and rotates the lever 8 in the horizontal plane, compressing the spring 13. The leaf spring 9 is located above the * end of the lever 3. Then, the workpiece 11 rests against the 'projections 4 with the leading edge and stopping ..... loses.

The cutting operation is performed, and during the punch up (not shown in the drawings), the workpiece 11 is carried away by the punch up and acts on the protrusion 5 of the lever 3, which rotates around axis 1 and compresses the spring 12.

In this case, the end of the lever 3 with a wedge protrusion 6 slides along the spring 9, which extends beyond the wedge f * protrusion 6 and fixes pj] chag 3 in the upper position. /

At the exit of the workpiece 11 from the working area of the stamp, the lever 8 under the action of the spring 13 rotates horizontally around the axis 7, the spring 9 goes out of interaction with the end of the arm 782917 - ₄ <chaga 3, and the lever 3 under the action of the spring 12 rotates around the axis 1. The protrusion 4 is lowered on the bottom of the stamp (matrix).

Claims (2)

Claim 1. An automatic emphasis on punching and sequential dies, comprising a lever spring-loaded to the matrix pivotally attached at one end in a puller, on the free end of which there is a ridge that interacts with the material being processed, on behalf of lorn and with the aim of increasing reliability of operation, the emphasis is equipped with a latch for fixing the end with a protrusion in the upper position. 2. The automatic emphasis according to claim 1, characterized in that the latch 2о is made in the form of pivotally fixed, in the puller with one end, spring-loaded in the horizontal plane and driven into motion in this plane additionally. body arm, on the free end of which a plate spring is fixed. a spring interacting with the end of the arm supporting the protrusion.