A method for controlling positioning of tape tail slitting

Abstract

The invention discloses a tape tail slitting and positioning control method. The tape tail is continuously conveyed by a pinch roller before cutting, and the slitting shears are controlled to continuously cut the tape tail with a set tape tail cutting length S0; the cutting process , when it is detected that the length of the remaining tape tail reaches the set initial length L0 of the tape tail waste, start to obtain the conveying length L1 of the tape tail, calculate the remaining length L2 of the tape tail and the number of remaining shears N; when the remaining shear When the number of times N≤n, carry out pre-control adjustment to the cutting length of the tape tail, and the slitting shears will cut the tape tail with the adjusted tape tail cutting length; when calculating the number of remaining cutting times N=0, or detect the clip When there is no strip passing through the feeding roller, the pinch roller before cutting is opened, and the cutting of the strip tail is completed. The strip tail slitting and positioning control method provided by the invention can effectively reduce the incidence of accidents of steel retention or steel jamming when tails are broken, reduce the safety risk of manual handling of steel jamming / steel retention, and avoid slitting and shearing of double-layer strip steel , causing damage to the device.

Description

technical field [0001] The application belongs to the technical field of automatic control, and in particular relates to a strip tail slitting positioning control method applied to the control of the length of cut waste when slitting and cutting the shredded tail in a cold-rolled strip processing line. Background technique [0002] When the tail of the strip on the uncoiler of the cold rolling processing line is flicked to the slitting and shearing, in order to improve the yield, it will continue to move forward for a certain distance according to the plate shape before slitting. Cut into shreds, and the shredded tails fall into the waste chute. [0003] When the slitter cuts the tail, the last strip is sometimes long and sometimes short. If the length of the last strip is too long and exceeds the width of the waste chute, the last strip will be stuck between the shear blade and the waste chute and cannot fall down; If the last piece of strip is too short, the strip will re...

AI Technical Summary

Problems solved by technology

[0003] When the slitter cuts the tail, the last piece of steel strip is sometimes long and sometimes short. If the length of the last piece of steel strip is too long and exceeds the width of the waste chute, the last piece of steel strip will be stuck between the shear blade and the waste chute and cannot fall down; If the last piece of strip is too short, the strip will remain on the platform between the slitter and the pinch roll after it leaves the pre-shear pinch roll, causing the slitter to shear when cutting the next roll of strip. Double layer, bad effect on equipment

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