SU1569109A1 - Eccentric shears for cutting metal - Google Patents

Abstract

The invention relates to the processing of metals by pressure, in particular to the rolling of blooms and slabs, and can be used for their cutting. The purpose of the invention is to increase the reliability of scissors and improve the quality of the products. When the actuator 15 is turned on, the coupling 16 and the intermediate shaft 17, rotating the eccentrics 9 and 10, transmit motion to the connecting rods 7 and 8 and to the sliders 2 and 3 with the blades 4 and 5. Together with the slider 3 the limiter 18 moves upwards. The yoke 20, link 11 and lever 12 is rotated counterclockwise. The rod 13 with the clamp 14 goes down. The first is touching the strip 27 of the knife 5 of the lower slider. Then the knife 5 moves together with the strip 27 upward until the pressure 14 comes in contact with it. The link 11 and the lever 12 together with the pressure clip 14, the strip 27, the slider 3 and the knife 5 move upwards until they meet with the upper knife 4. Rocker 20, as the limiter 18 rises, rotates counterclockwise until it stops 22. Then, the shears are cut and returned to their original position. At the same time, the axis 21 of the articulated joint of the rocker arm 20 is shifted relative to its center of gravity towards the limiter 18. 1 Il.

Description

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The invention relates to the processing of metals by pressure, in particular to the rolling of blooms and slabs, and can be used for their cutting.

The purpose of the invention is to increase the reliability and improve the quality of the products.

The drawing shows the kinematic scheme of scissors (the drive is conventionally rotated 90 °).

Eccentric shears for metal cutting include a housing 1 with upper 2 and lower 3 sliders mounted in it, knives 4 and 5 mounted on sliders 2 and 3 parallel to each other, an eccentric shaft 6 mounted for rotation 1, connecting rods 7 and 8 , connected by one ends with eccentrics 9 and 10 of the shaft, and others - with sliders 2 and 3, the pressing mechanism with link 11, lever 12, rod 13 with pressing 14 and drive 15 connected to eccentric shaft 6 through coupling 16 and intermediate shaft 17. On the lower slider 3 there is a limiter 18, and on Tange 13 - stopper 19. The main body 1 is set rocker arm 20 by a hinge 21 to cooperate with limiters. The axis of the articulated joint of the rocker is mixed relative to its center of gravity towards the limiter 18. On the housing 1, a stop 22 is installed, limiting the movement of the rocker arm 20. On the foundation 23 of the eccentric shears there is a shock absorber 24 of the lower slider 3. The sliders 2 and 3 are installed with the possibility of movement in guides 25 and 26 of the housing 1. The strip 27 is located on the roll table 28.

Eccentric shears for metal cutting work as follows.

When the actuator 15 is turned on, through the coupling 16, the intermediate shaft 17, rotating the eccentrics 9 and 10. Movement of the connecting rods 7 and 8 and the sliders 2 and 3 with the knives 4 and 5 is transmitted. Together with the slider 3, the limiter 18 moves upwards. The rocker 20, link 11 and the lever 12 is rotated counterclockwise. The rod 13 with the clamp 14 goes down. First touches

strip 27 knife 5 lower ram. Then the knife 5 moves together with the strip 27 upward until pressure 14 comes in contact with it, after which the link 11 and the lever 12 together with the clamp 14, the strip 27, the slider 3 and the knife 5 move upwards to meet with the upper knife 4 The yoke 20, as it is raised, the limiter 18 is rotated counterclockwise until it stops 22. Then, cutting occurs with the lower and upper blades.

The return of the scissors mechanism to its original position is as follows. The upper slider with the help of the eccentric 9 and the connecting rod 7 rises, and the lower one at

the help of the eccentric 10 and the connecting rod 8 is lowered down onto the shock absorber 24 mounted on a fixed foundation 23. The stopper 18 rotates the beam 20 clockwise, which through the stopper 19 lifts the rod 13 with the clamp 14.

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Claims (1)

Invention Formula Eccentric shears for metal cutting, comprising a housing with upper and lower sliders mounted in it, knives mounted on sliders parallel to one another, an eccentric shaft mounted in the housing, a lever pivotally mounted in the lower slide, connecting rods connected at one end to the eccentric shaft, and the others, respectively, with the upper crawler and one of the arms of the lever, the clamping mechanism with a rod pivotally connected to the second shoulder of the lever, a link pivotally connected at its ends to the rod and the lower crawler, and so forth iodine, characterized in that, in order to increase the reliability and improve the quality of the products obtained, they are equipped with a rocker arm and two limiters, one of which is mounted on the rod, the other on the lower the slider, the rocker arm is hingedly mounted on the body with the possibility of its shoulders interacting with the limiters, while the axis of the rocker arm is shifted relative to its center of gravity towards the limiter mounted on the lower slider.