SU1199364A1 - Arrangement for successive stamping - Google Patents

Abstract

SEQUENTIAL PUNCHING DEVICE from a strip of parts such as sleeves, containing a pulson for cutting off the workpiece from a strip, having a slot on the working end, the walls of which are perpendicular to the direction of movement of the strip, one at least sectional punch for bending, a support for moving the workpiece, a slide for movement of the workpiece, a mandrel for bending and elements for guiding the strip, a punch for cutting and one of the sections of the punch for bending are located in one part of the device, another section are located in another part of the device a punch for bending and a support placed under the punch dp cuts, and the mandrel is located between the sections of the punch for bending, characterized in that, in order to reduce overall dimensions, the support for moving the workpiece is spring-loaded to the punch for cuts and a groove is made on its end facing towards it whose walls are parallel to the walls of the groove. cut punch, gate made 5 in cross section (LNII, smaller in the same section of the cavity formed by the grooves of the support and cut punch, and the mandrel is made of two different sized parts connected by a smooth transition, each of which has a constant cross section, is rigidly connected to a part with a smaller cross section with a ShiQO bent and is located in the groove of a punch 10 for dividing. about: 41 ;.

Description

The invention relates to the treatment of metals by pressure, in particular to tooling for stamping from sheet material. The purpose of the invention is to reduce the size of the device. FIG. 1. shows the proposed device, a general view in section; in fig. 2 is a section A-A in FIG. figure 3 - section bb in figure 1; in fig. 4 - section bb In figure 1; figure 5 - section GG in fig. one; in Fig. 6, the automaton in which the device is applied. The device for sequential punching comprises a punch 1 for cutting from a groove 2 and a support 3, spring-loaded 4 and the pressing functions, sections 5 and 6 of the pre-bending punch, section 7-9 of the punch of the final bending, gate 10 and associated mandrel 11, consisting of a thickened part 12, a thin part 13 and a smooth transition connecting them 14, guides 15. The device is mounted on a hook machine 16 and all the tools of the device are operated by cams 17-23 each sitting on one axes with a corresponding scale three (not all gears shown) driven by a common drive (not shown) of the machine. The machine includes a feed mechanism 24, a roll basket 25, and a kit 26 of tools for punching, local forming, etc., associated with the drive of the machine as described, can be installed in it. The device works as follows. The strip 27, through the roll holder 25, is supplied by the cam 23 through the guides 15 under the die for cutting. When the cam 17 rotates, the punch 1 produces a cut of the workpiece 28, lowering the support-clamp 3 and compressing the spring 4. With further rotation of the cam 17, the punch I returns to its original position, and the support-clamp 3 returns the workpiece 28 to feed level. Then, the gate 10 is moved from the cam 23, moving the workpiece 28 to the pre-bending position, where sections 5 and 6 pre-bend on the section 13 of the mandrel 11. During the return travel of the gate 10 with the mandrel 11, the preform is bent and transferred to the punch when moving the mandrel 11 along its groove 2, moves relative to the mandrel 11 to its transition 14, unclasping due to the difference in cross sections and fixed on the mandrel 11 from displacements. Further operation of the device occurs as described above, and the blanks arrive at the final bending position and are removed from the mandrel, moving one to the other. The implementation of the invention will make it possible to reduce the dimensions of the device by eliminating the independent drive of the mandrel when it is coupled with the gate and carried out with a variable cross section of its parts.

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FIG. 2

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Fig.b

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FIG. five

Claims (1)

DEVICE FOR SEQUENTIAL STAMPING from a strip of parts such as bushings, containing a punch for cutting a workpiece from a strip, having a groove on the working end, the walls of which are perpendicular to the direction of movement of the strip, at least one sectional punch for bending, a support for moving the workpiece, a slide for moving blanks, a mandrel for bending and elements for guiding the strip, a punch for cutting and one of the sections of the punch for bending are located in one part of the device, in the other part of the device there is another section of the punch bending sone and a support located under the cutting punch, and the mandrel is located between the bending punch sections, characterized in that, in order to reduce the dimensions, the support for moving the workpiece is spring-loaded to the cutting punch and a groove is made on its end facing it, the walls of which are parallel to the walls of the groove of the punch for cutting, the gate is made with dimensions in the cross section smaller than the dimensions in the same section of the cavity formed by the grooves of the support and the punch for cutting, and the mandrel is made of two different sizes astey associated smooth transition, each of which has a constant cross-section, is rigidly connected with a part of smaller cross section and a damper disposed in the groove of the punch for cutting. SU,.,. 1199364