SU774713A1 - Combined-action die for punching and perforating - Google Patents

Description

one

The invention relates to a tooling for sheet metal stamping with devices for mechanizing and automating the removal of parts and can be used in the field of mechanical engineering.

A combined action stamp for simultaneous punching and punching is known, comprising a punch and die rigidly connected to the movable plate, as well as a punch matrix mounted on the fixed plate and a spring-loaded puller.

The stamp has the disadvantage that the part being pushed out of the die in the upper position of the movable plate remains in the working area, and its removal is associated with a waste of time and danger of the operator's hands in the stamping area.

A device is known for automating the removal of parts from combined-action dies, comprising a tray installed in the fixed part of the die and a reset device pj. This device is unreliable when working on high-speed presses and with a small (up to 80 mm) stroke length of the press ram.

A well-known stamp is a combined action for punching and cutting, which contains a movable plate, a carrier of a punching punch, a fixed plate, and also a cutting matrix with a resetter mounted on it, which is spring-loaded in the direction

10 perpendicular to the direction of movement of the movable plate, and the removal of parts from the breakdown machine

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5 The well-known stamp contains a wedge drive stop with a ejector, which complicates the stamp, its manufacture and adjustment,

In the described stamp for easier NIN of its manufacture and adjustment, the cutting matrix is fixed on a non-O-movable plate with the possibility of axial displacement and facing to it with a working end, and the parts remover from the punching punch is fixed on the non-working end of the cutting matrix, in which the non-working end is grooved for placing the dumper and a window for removing the finished part.

Describing the 1st stamp is depicted. in the drawing, a longitudinal section, on the left, at the moment of punching and cutting, on the right, before removing the part,

The stamp contains in the lower part a fixed punch-matrix 1 rigidly attached to the lower plate 2 and enclosed by the puller 3 resting on the buffer 4 and rigidly attached to the matrix 5 (from the side of the mirror). On the non-working end side, a stripper 6 of parts 7 is attached to the matrix 5 from a piercing punch with a hole, a window a is provided for removing parts 7, and a resetter 8 is installed, spring-loaded in a horizontal direction perpendicular to the direction of movement of the movable plate, by compression spring 9. In the upper part of the die there is a movable plate 10, which interacts with the lower fixed plate 2 by means of columns 11 and sleeves 12. A punched punch 14 is attached to the plate 10 by means of a holder 13, to ensure the coaxiality of the working parts and uniform distribution of the gap matrix 5 in its vertical reversing movement (by the amount of buffer compression 4) is directed along columns 11 or along individual columns (not shown in the drawing).

Gattice 5 is equipped with a working skull value, 3 1.2–1.5 times the thickness of the processing of the sheet-strip 15. Extending the working width of the hole in the paciaKpeiio matrix for an unhindered pressure barrier; details /. The remaining on the punch 14. 3 is provided with a support stop 16. Which can be performed, for example, automatically drowning, the Interstation matrix 5 and the stripper 3 provides a gap through the groove b, made in the feed direction 15. The height of the groove b exceeds the total height of the stop 16 and the strip 15. If it is necessary to press the strip 15 at the moment of cutting the part, the height of the groove will be reduced by means of the proximity of the matrix 5 and the puller J. To this end, rigid nuggles 17 may be replaced by spring-loaded ones, and emphasis 16 is made by a drowning man.

The stamp works as follows.

movably

In the upper position of the shtggmpa part, the l: j strip is fed. When lowering to the stop 16 in slot b, 13, it finds the SRI of the 10th plate on the top 6 and moves

down together with a punch 14 matrix 5 and a puller

3, compressing the elastic buffer 4, Weai. By modifying the working edges of the matrix 5, the punch matrix 1 and the punch 14, cut along the contour and punching the hole in the part 7. When lifting the plate 10, the buffer 4 raises the puller 3 and the matrix 5 also up, and The punch 14 with the remaining part 7 of 7 is moved upwards in the hole of the die 5. At the same time, part 7, having reached the resetter 8, is removed from the punch 14 by means of the ram 6. Spring 9 is sharply opened and the action of the resetter 8 is ejected through the end of part 7 window a - from the stamping area.

In the following, the stamping cycle is repeated.

The stamp is distinguished by simplicity of design and reliability in operation, especially when cutting - punching complex parts from sheet material with a thickness above 1 mm. The stamp allows the ocyiuecTBHTb to work in automatic mode, which increases the safety and productivity of the work, and it also contributes to increasing the durability of the equipment

The stamp can also be installed on presses that are not equipped with an ejector system, which increases the flexibility of the method of combined stamping and raises the areas of its radial use.

the invention

Formula

O Combined punching action for punching and cutting, containing a movable plate that carries a hardener punch, a fixed plate, as well as a cutting die with mounted pe. with the release device, spring-loaded in the direction perpendicular to

0 to the direction of movement of the movable plate, and the puller of parts from the piercing punch, characterized in that, in order to simplify the manufacture of the punch and its adjustment, the die-cutting matrix is fixed on the fixed plate with the possibility of axial displacement and the parts stripper from the traction punch fixed on the non-working end of the cutting matrix; in the last from the non-working end, there is a groove for accommodating the dumper and a window for removing the finished part,

Sources of information taken into account in the examination

1. Romanovsky V.P. Handbook of Cold Stamping. L., Mechanical Engineering, 1971, p. 501, tab. 204.

2.Avtorskoe SEIdedelstvo USSR

J 849450, CL B 21 O 45/04, 03.12.79.

3. USSR author's certificate

W 528937, cl. B 21 D 45/04, 05.C3.74 (prototype).

Claims (1)

The claims in the Combined Action Stamp for punching and punching, comprising a movable plate carrying a punch punch, a fixed plate, and a die die with a ejector mounted behind it, spring-loaded in a direction perpendicular to the direction of movement of the movable plate, and a part puller from the punch punch, characterized by the fact that, in order to simplify the manufacture of the stamp and its adjustment, the die cutting matrix is mounted on a fixed plate with the possibility of axial displacement and facing it with a working end IR components with the breakdown of the punch is attached to the non-working end of the punching matrix, the latter on the part of the non-working end of a groove to accommodate the ejector and a window for the removal of finished parts>