SU1215791A1 - Sheet bending machine - Google Patents

Description

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The invention relates to the processing of metals by pressure, in particular, to devices for bending parts from sheet blanks.

The purpose of the invention is to improve the safety of work on the machine.

FIG. 1 shows a car, a general view; in fig. 2 shows section A-A in FIG. 1, when bending the first edge of the workpiece; in fig. 3 - the same, when bending the second edge of the workpiece; in fig. 4 - the same, with circular tibka of the workpiece; in fig. 5 is a section BB in FIG. four.

The sheet bending machine contains Station 1 with racks 2 and 3 fixed on it, in which a common axis 4 is mounted with pivoting levers 5-8 of the mechanism 9 for moving the side rolls with side rollers 5, Q installed in the levers 5, front 10 and rear 11. 3, a hinged support mechanism 12 is attached. On the base 1, the main drive 13 is placed. On the levers 5 and 6 or on the ends of the side rolls 10 and II, plates 14 and 15 are mounted with cantilever swiveling curved arms 16 and 17, the latter are set free rotating po Fig. 18. At the axis 19 of the arms of the levers, fungi 20 are mounted, interacting with the commanding apparatus 21 mounted on the plates 14 and 15. The swing arms are spring-loaded with springs 22.

The proposed plate bending machine works as follows.

Before feeding the workpiece 23, the side rollers 10 and 11. are installed with a clearance relative to the upper roller 24. The blank 23 is inserted between the rollers. So that its front end is flush with the horizontal forming rear roller P. At this time roller 18, mounted on the swing arm 16, fixed on the front roll Yu, is retracted to the extreme right position, the spring 22 is extended, the fungus 20 does not interact with the pilot 21, the contacts of the latter become normally closed, i.e. the rolls should turn to the left, however, since the main drive 13 is turned off, this does not happen. Then, when-i water 9 moves the rear side

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roll 11 up and bend; ku front edge of the workpiece.

  After finishing the front edge of the workpiece, the head drive is turned on, and since the contacts of the commander 2 are closed, the rolls are rotated to the left and the workpiece is moved, while the operator turns on the back drive of the side roll 11 and the front roll drive side roll 10 up to hem the trailing edge of the workpiece. At this time, the roller 18, mounted on the rocker lever 15, 17, mounted on the rear roller I1, moves gradually to the extreme left position, the spring 22 expands and the fungus 20 gradually comes out of the interaction 20 with the control unit 21.

Simultaneously, the roller 18 mounted on the lever 16 fixed on the front side roll moves to the extreme left position 25, the spring 22 is compressed and the fungus 20 gradually enters into interaction with the control unit 21. The contacts of the latter become normally open - 2Q mandala set on

the rear side roll becomes normally closed, as a result of which the hem of the trailing edge of the workpiece ends and stops growing. rolls to the left and starts

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BpanteHHe rolls to the right, i.e. -as40

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the process of circular bending of the workpiece becomes blunt and the operator periodically switches the side rolls up to obtain the specified size of the shell diameter, do not worry about switching the direction of rotation of the rolls, and also that the workpiece is. k can fly out of the rolls of the car and cause injury to others and to himself. As soon as the roller comes out of contact with the workpiece, or after obtaining the minimum diameter, the spring 22 is compressed, the fungus 20 comes into contact with the control unit 21, the contacts of the latter become normally open and the rolls stop. To make a new shell, the cycle is repeated.

The implementation of the invention in comparison with the known devices allows to simplify the design in connection with the reduction of the number of parts and the reduction of their technological complexity.

the rear side roll is finally closed as a result of which the hem of the trailing edge of the workpiece ends and stops growing. rolls to the left and starts

BpanteHHe rolls to the right, i.e. -us

the process of circular bending of the workpiece becomes blunt and the operator periodically switches the side rolls up to obtain the specified size of the shell diameter, do not worry about switching the direction of rotation of the rolls, and also that the workpiece is. k can fly out of the rolls of the car and cause injury to others and to himself. As soon as the roller comes out of contact with the workpiece, or after obtaining the minimum diameter, the spring 22 is compressed, the fungus 20 comes into contact with the control unit 21, the contacts of the latter become normally open and the rolls stop. To make a new shell, the cycle is repeated.

The implementation of the invention in comparison with the known devices allows to simplify the design in connection with the reduction of the number of parts and the reduction of their technological complexity.

31215791

nosti; reduce the metal intensity of the fishing machine, cams, spindle screws, etc. by 86 kg; reduce the labor intensity of the engine by 78 standard hours. and increase machine waste, as the work on sheet bending machines is no longer necessary; Manufacturing of leading wipes.

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VNIIPI Order 931/9 Circulation 783. Subscription Affiliate GOSH Patent, Uzhgorod, Proektna St., 4

Claims (1)

A BENDING MACHINE for bending conical and cylindrical shells, comprising side rolls mounted on the bed, mounted in rotary arms, which is characterized by the fact that, in order to improve safety conditions, it is equipped with an automatic stop and reverse unit for rotating the side rolls mounted on said arms, made in the form of plates with cantilever mounted on them spring-loaded swinging levers and control gears of the drive for stopping and reversing the rotation of the rolls, while on a free tse each of the levers is mounted freely rotatable roller, and at the lever pivot axis - a fungus which interacts with a corresponding sequencer.