Withdrawal roll device of end trimming shear

Abstract

The invention discloses an end trimming shears pinch roll device on a steel rolling production line of medium plates. The device can prevent the phenomenon that steel plates 'are pulled to one side' during conveying. The end trimming shears pinch roll device comprises a fixed side upper pinch roll, a fixed side lower pinch roll, a movable side upper pinch roll and a movable side lower pinch roll, wherein the fixed side lower pinch roll is axially connected with the movable side lower pinch roll through a synchronous shaft; the fixed side upper pinch roll and the fixed side lower pinch roll are synchronously driven by a driving mechanism; and the movable side upper pinch roll and the movable side lower pinch roll are synchronously driven by a driving mechanism, so that the end trimming shears pinch roll device can guarantee consistent linear velocity of roll surfaces between two opposite upper and lower pinch rolls, avoid the phenomenon that the steel plates are 'pulled to one side' during the conveying, and improve the quality of the steel plates sheared by a pair of end trimming shears.

Description

technical field [0001] The invention relates to front and rear pinch equipment of trimming shears on a metallurgical plate rolling production line, in particular to a pinch roll device of edge trimming shears on a medium-thick plate rolling production line. Background technique [0002] The existing trimming shear pinch roll device used in the medium and heavy plate rolling production line generally adopts the following structure and driving form: it includes a fixed side pinch roll and a moving side pinch roll, and the fixed side pinch roll is pinched by the fixed side. The pinch roller on the moving side is composed of the upper pinch roller on the moving side and the lower pinch roller on the moving side. Each pinch roller is independently driven by a motor with a reducer. The upper and lower opposite pinch rollers are controlled by an electrical system to run synchronously. The upper and lower opposite pinch rollers rely on hydraulic cylinders to change the size and size...

AI Technical Summary

Problems solved by technology

The disadvantages of the pinch rollers in the above form are: when the pinch rollers are frequently started and stopped (the nominal maximum value can reach 1800 times / hour) to convey the steel plate, due to the large number of motors, and the inherent mechanical properties of each motor It is difficult to ensure the consistency of the characteristics, which causes a large roller surface line speed difference between the upper and lower pinch rollers, which makes the steel plate easy to "deviate" during the conveying process - the theoretical center line of the steel plate elongation direction Deviating from the ideal center line of the running direction, resulting in obvious handover and dislocation marks at the edge of the steel plate each time it is cut, affecting the shape quality of the steel plate

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