A method and control system for controlling the internal tension of double loopers in a production line

Abstract

The invention belongs to the technical field of looper tension control, and proposes a method for controlling the internal tension of double loopers in a production line, which includes the following steps: setting the total tension of the first looper and the second looper as F0, and assigning it to the first looper The tension is F1, and the tension assigned to the second looper is F2; ​​according to the tension of the first looper and the tension of the second looper, adjust the torque T1 of the first looper motor and the torque T2 of the second looper motor ;Obtain the set amount H1 of the first looper and the set amount H2 of the second looper; calculate the difference between the set amount H1 of the first looper and the set amount H2 of the second looper; perform PID calculation according to the difference, Obtain the compensation value for the torque T1 of the first looper motor and the torque T2 of the second looper motor; adjust the tension F1 of the first looper to F3 and adjust the tension of the second looper to F2 according to the compensation value It is F4, adjust the torque T1 and torque T2 according to the adjusted tension of the first looper and the tension of the second looper. Through the above technical solution, the problems in the prior art are solved.

Description

technical field [0001] The invention belongs to the technical field of looper tension control, and relates to a method and a control system for controlling the internal tension of double loopers in a production line. Background technique [0002] The main function of the looper is to store aluminum foil strips for roll change. In the aluminum processing hydrophilic aluminum foil coating production line, due to the requirements of production technology and production efficiency, it is necessary to make the equipment continue to produce without stopping during the roll change process. Therefore, it is necessary to use loopers; most of the production lines currently use single loopers, and a few use double loopers, but when using single loopers, there are problems such as high vertical height, small reserves of aluminum foil strips, and low production speed; The double looper is usually controlled separately by two loopers. This control method has the problem that the tension o...

AI Technical Summary

Problems solved by technology

[0002] The main function of the looper is to store aluminum foil strips for roll change. In the aluminum processing hydrophilic aluminum foil coating production line, due to the requirements of production technology and production efficiency, it is necessary to make the equipment continue to produce without stopping during the roll change process. Therefore, it is necessary to use loopers; most of the production lines currently use single loopers, and a few use double loopers, but when using single loopers, there are problems such as high vertical height, small reserves of aluminum foil strips, and low production speed; The double looper is usually controlled separately by two loopers. This kind of control method has the problem that the tension of the looper fluctuates greatly during the acceleration, deceleration and roll change of the machine train, which makes the amount of looper unbalanced.

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