SU531671A1 - Varietal shears for cutting metal blanks - Google Patents

Description

one

The invention relates to the field of forge and press engineering and can be used in machine building plants for the production of blanks for subsequent stamping, mechanical processing, etc.

Scissors for cutting metal blanks are known, containing upper and lower traverses installed in guide beds with the possibility of reciprocating movement from the slide and carrying the upper and lower blades respectively, as well as a clamping mechanism with an adjustable slide 1.

Also known are scissors for cutting steel, containing upper and lower traverses carrying, respectively, upper and lower blades, as well as a clamping mechanism driven by a pneumatic cylinder 2.

A significant disadvantage of the known scissor structures is the presence of significant end residues of the long-life metal to be discarded.

The purpose of the invention is to increase the yield of rolled products and improve the performance of the device.

For this, in the proposed scissors, the clamping mechanism is equipped with a spring-loaded traverse beam mounted on a slide with the possibility of reciprocating

move in the direction of the slider movement.

FIG. 1 shows the proposed varietal shears for cutting metal blanks, general view, cut; in fig. 2 is a view along arrow A in FIG. 1 (clamping mechanism).

The scissors contain a bed 1, a drive 2, a slider 3, connections through rocking 4 with an upper traverse 5 and an lower traverse 6,

the clamping mechanism 7 with an individual drive 8. In the slider 9 of the clamping mechanism, the power cylinders 10 are embedded, on the rods of which the yoke 11 is fixed, pressed by the springs 12 to the slider. The workpiece 13 is fed to the scissors with the roller table 14 until it stops 15. The closed height of the clamping mechanism is adjusted by the electric motor 16 through the gearbox 17. A lever 18 controls the end of the workpiece. To the upper traverse fastened

the upper movable knife 19 and the lower movable knife 20 to the lower traverse. The stationary lower knife 21 is attached to the frame. The cut blanks are fed to the discharge chute 22. The operation of the scissors is as follows.

The blank 13, fed by the roller conveyor 14 to the cutting zone up to the stop 15, is pressed against the fixed knife 21 by the action of the actuator 8.

From drive 2, motion is transmitted to a slider.

3 and through the rocking chair 4 traverse 5 and 6. Upper

3

and the lower crosshead clamped with knives 19 and 20, the end of the workpiece 13.

Upon further downward movement of the slider 3, the cut end of the workpiece is shifted relative to the workpiece 13 lying on the bottom knife 21. The cut end of the workpiece falls into the discharge chute 22. Traverse 11, pressed by springs 12 to the slider 9, moves with it.

The adjustment of the closed height of the clamping mechanism 7 is carried out through the gearbox 17. As soon as the end of the workpiece 13 passes through the lever 18, the power cylinders 10 come into operation, which lower the yoke 11. The traverse, holding the rest of the workpiece, prevents it from falling into the discharge tray. The rest of the workpiece is again fed into the cutting area until it stops 15.

The remaining unmeasured (less than the length of the workpiece) piece of the workpiece is pushed to the discharge chute 22 by the next feed.

Claims (2)

1. Auth. St. No. 209183, M. Kl.2 V 23D 23/00, 1964 (prototype). 2. Auth. St. № 468714, M. CL. 23D 23/00, 1972 2 GB Type A FIG. 2