SU1500442A1 - Combination shears - Google Patents

Abstract

The invention relates to the processing of metals by pressure and can be used when cutting material. The purpose of the invention is to increase the reliability, safety and ease of maintenance, as well as to reduce metal consumption. When turning on the electromagnet 13 tons ha 17 turns the V-shaped lever on the axis 16. The inner surface of the V-shaped lever acts on the roller 19 and turns it together with the connecting rod 8 to the right. When the working shaft 10 rotates, the connecting rod 8 rests on the follower 7, moving the slider 3. Res. The electromagnet 13 is turned off. The t he 17 is lowered, the V-shaped lever 15 rotates on the axis 16. The slider 3 returns to its original position. 3 il.

Description

3150

The invention relates to the processing of metals by pressure and can be used when cutting material.

The aim of the invention is to increase reliability, reduce metal consumption, as well as improve labor safety and serviceability.

FIG. 2 shows a combined scissors, a general VIEW of FIG. 2 — node I in FIG. 2; on fig.Z - section aa in figure 2.

Combined scissors contain a bed 1, with which by means of axis 2 the swiveling rod 3 is pivotally connected, held in the upper initial position by means of a spring balancer 4 and carrying a knife of a variety-shaped 5 and a drill 6 section Slider 3 through a slot 7, a connecting rod 8 a balance bar 9 is associated with a working shaft 10, which is rotated by a scissor drive. The balance bar 9 is pivotally connected to the end of the return lever 11, the second end of which is movably connected to the guide 12 fixed on the slide 3. The operation of the combined scissors is carried out on the electromagnet 13 connected to the connecting rod 8 by means of a lever mechanism a support 14 mounted on the bed 1 above the slider 3. The lever mechanism is made in the form of an i-shaped lever 15 mounted rotatably on an axis 16, one arm of which is pivotally connected through an adjustable rod 17 with an electric magnet 18 18. The axis 16 is located on the bend of the lever 15 and is fixed on the bed 1. Between the arms of the U-shaped lever 15 is placed a roller 19 mounted on the axis 20 and alternately interacting with the inner surfaces 21, 22 of the I-shaped lever 15. The axis 20 is mounted on a connecting rod . 8. A support 23 is also fixed on the base 1, intended to limit the rotation of the I-shaped lever 15 and to determine

its initial position.

I

Combined scissors work

in the following way

In the initial position, the bark 18 of the electromagnet 13 is in its lowest position, the U-shaped lever 15 is pressed against the outer surface to the stop 23, and the roller 19 contacts the inner surface 21 21. Ka5

o

5 0 5 0 5

0

The sliding slider 3 is held by the spring balancer 4 in its initial upper position.

On command from the commander, the electromagnet 3 is turned on, the measles 18 of which, retracted, moves upward along with the adjustable thrust 17. At the same time, the i-shaped lever 15 pivotally connected to the thrust 17 turns on the axis 16 and, with its inner surface 21, on the roller 19, turns the roller 19 together with the connecting rod 8 to the right. When turning the crank of the constantly rotating working shaft 10 from the upper to the lowest position, the lower part of the connecting rod 8 passes an adjustable free clearance e and abuts against the subgun 7, alternates ix nozki carrier slide 3 and the fulfillment of the working operation. In this case, the spring of the balancer 4 is compressed. At the moment when the slider 3 is in its lowest position, the electromagnet 13 is turned off, its measles 18, together with the adjustable gravity 17, are lowered under the action of gravity, and the i-shaped lever 15 turns on its axis 16. surface 22 into contact with the roller 19. The crank of the constantly rotating working shaft 10 rotates from the lowest position to the top, the slider 3 under the influence of the spring of the balancer 4 returns to the original upper position, and the rod 8 comes out of contact with the slider 7 of the slide 3. I

The connecting rod 8 with roller 19 brought out of contact with the bolster 7 under the action of its own force of gravity and gravity of the core 18, the adjustable rod 17 and the I-shaped lever 15 rotates to the left until the outer surface of the U-shaped lever 15 is will come into contact with the stop 23, and the roller 19 will come into contact with the inner surface 21 of the U-shaped lever 15. The lever mechanism and the crank 8 are in the initial position. The above described cycle is repeated.

Claims (1)

Invention Formula Combined sheaths containing a frame, crawlers with knives, pivotally mounted on a frame, a spring balancer, a working shaft, a connecting rod with a balance bar connected to it, and an electromagnet for switching on the slide stroke, connected by means of a lever mechanism with a connecting rod, a clamp mounted on a slide, an emphasis and associated with the working shaft drive, characterized in that, in order to increase reliability, safety and ease of maintenance as well as reducing metal consumption, the connecting rod is provided with a roller, the lever mechanism is made in the form of a U-shaped lever, the bending point of which is pivotally connected to the bed, and one arm is pivotally connected to the electromagnet mounted on the frame above the slide, the stop is mounted on frame, while the roller is located between the shoulders of the U-shaped lever. nineteen 7. JG7 1S Sree & .2 A-L