Tension control method and control device for unwinding system

Abstract

The invention discloses a tension control method of an unwinding system. The unwinding system comprises an unwinding motor, a material storage mechanism and a material storage motor, wherein the unwinding motor is used for providing torque which is opposite to the material unwinding direction, the material storage motor is used for driving the material storage mechanism to act, so that the materials stored in the material storage mechanism can be changed between a preset upper limit and a lower limit; according to the unwinding system, the clamping mechanism at the front end of the material storage mechanism is additionally arranged, and a simple control algorithm is adopted, so that constant tension control of the materials in the roll changing process can be realized. The invention further discloses a tension control device of the unwinding system. According to the unwinding system with the storage mechanism, the clamping mechanism at the front end of the material storage mechanism is additionally arranged, and the simple control algorithm is adopted, and constant tension control of the materials in the roll changing process can be realized, the follow-up winding tension controlis easy to achieve and easy to high-precision control, and the quality of processed products can be effectively improved.

Description

technical field [0001] The invention relates to a tension control method and a control device of an unwinding system. Background technique [0002] In textile machinery, fur, papermaking, battery, film, packaging, metallurgy, cable and many other industries, the control system for winding and unwinding of strip materials is involved. Since the tension of the material during the winding and unwinding process will have an important impact on the production quality, most of the winding and unwinding control systems will be designed to control the tension of the material to maintain a constant tension control device, usually based on the load detected by the tension sensor Torque is realized by closed-loop control of a motor such as a magnetic powder brake. [0003] During the whole process of unwinding and unwinding, there must be actions of changing rolls at the unwinding position and at the winding position. After these actions are required, one response method is to stop al...

AI Technical Summary

Problems solved by technology

The efficiency of this method is higher than that of the first method, and it is more widely used in the winding and unwinding control system. However, this scheme will cause huge fluctuations in the tension of the unwinding load during the roll changing process, making the roll changing process The quality of processed products fluctuates, and sometimes even fails to meet the quality requirements of the product

At the same time, higher dynamic and stability control requirements are put forward for the tension control of subsequent winding, which increases the technical difficulty of the tension control technology of winding

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