SU969382A1 - Die for cold sheet stamping - Google Patents

Description

(54) STAMP FOR COLD SHEET STAMPING

one

The invention relates to a tooling for cold sheet punching, in particular to devices used in dies for pressing and filling workpieces to the YURDIM benchmark of punch elements, and can be used in industry and other industries.

A stamp for cold sheet punching is known, comprising a device for clamping-billet a sheet stock to the orienting stamp parts, comprising a spring loaded pad that is movably placed at the base and moved from the top plate of the stamp through a pusher tlj.

The disadvantage of this stamp is the impossibility of creating significant efforts to clamp-send the workpiece.

 A stamp for processing sheet blanks is known, comprising a lower stationary plate, a puller and a device in the form of a clamping-to-squatter blanks for the orienting parts of a punch movably mounted in the puller and spring-loaded in a direction perpendicular to the direction of movement of the punch. Known clamp-Dsylatel made with a bevel on the working end 2,

The disadvantages of this brand also include the inability to develop large efforts to clamp-send the workpiece and the difficulty of its movement and installation.

The closest in technical essence and the achieved effect to the proposed is a stamp for cold sheet punching / containing the upper movable and lower fixed plates, bearing a punch, a matrix, an emphasis and a clamp-plate, pressing the workpiece against the emphasis and moving under the action of a wedge 15 mechanism, installed on the lower state of the stamp. The clamping device is located between the matrix holder and the fixed puller GZ.

The disadvantage of the famous stamp

20 . is the limited effort when pressing and unloading and installing sheet blanks in the working area of the punch due to the presence of protruding parts of the pressure receiver above the plane of the mirror matrix and the impossibility of processing not only small but also large loading areas.

The purpose of the invention is to improve the conditions of movement and installation of balers in the working area of the stamp.

This goal is achieved by the fact that in 1 tampa for cold sheet punching, which contains upper sub-lower and lower fixed plates that carry a punch, a matrix, an emphasis and a clamp-rammer, pressing the workpiece against the abutment and moving under the action of a wedge mechanism, the clamp-ram is made in the form a lever hinged on the top plate and carrying a roller / a at the lower end of the wedge mechanism is designed in the form of a vertical 14. movable slide installed in the bottom plate equipped with a spring and an associated wedge plate roller surface.

The drawing shows a stamp for cold sheet punching, a cross-section.

The stamp for COLD sheet stamping contains the upper movable 1 and the lower stationary. 2 plates, a punch 3, a matrix 4, an emphasis 5 and a squeezer containing a lever b, hingedly fixed by an axis 7 and returning to the rest position, a spring 8, At the end of the lever 6. a clamping bar 9 is fixed for pressing and sending the workpiece 10 and roller 11, interacting with a wedge mechanism, made in the form of a vertically movable slide 12, installed on the bottom plate of the stamp 2 and not protruding above the mirror of the matrix 4, with a spring-loaded spring 13.

The work is as follows.

During the progress of the press slide with the upper plate 1 of the punch down the roller 11 comes into contact with the bevel of the slider 12, which is in the extreme upper position, i.e. at the level of the mirror matrix (shown by the dash-dotted line). The roller 11 turns the lever b to the left side until the workpiece 10 is pressed by the clamping bar 9 to the stop 5 and only after that the punch 3 enters the matrix 4,

and the slide 12 is pushed by the lever 6, down the spring 13.

The use of the invention will expand the technological capabilities of the stallet, the cold sheet

stamping, i.e. to process both small workpieces, where no greater clamping force is required, as well as large ones, which require considerable clamping-and-pouring forces during their processing.

In addition, the absence of protruding parts of the clamp-rammer above the mirror and it allows you to install it along its movement, as well as use the mirror of the matrix and the lower PLATE of the stamp to feed the workpiece for processing.

Claims (3)

Invention Formula Stamp for cold sheet punching, containing upper movable and lower fixed plates, bearing a punch, a die, an emphasis and a clamp-rammer, pressing the workpiece against the stop and moving under the action of a wedge mechanism, so that that, in order to improve the conditions of movement and installation of blanks in the working area of the punch, the clamp-doler is made in the form of a ryochag hinged on the upper plate and carrying a roller at the lower end, and the wedge mechanism is made in the form of a vertically movable slider mounted at the bottom 5 Pour, fitted with a spring and a wedge-shaped surface with a roller. Sources of information accepted. Attention in the examination 0 1. USSR author's certificate 453222, cl. B 21 D 43/00, 03.30.73. 2. USSR author's certificate No. 667291, cl. B 21 D 43/00, 01/10/78. 3. Skvortsov GD, Fundamentals of the design of stamps, m., 1972, p. 182, FIG. 142