Regarding tension control, I really need to understand
In many industries of industrial production, winding control problems are often encountered. For example, in the production process of paper, textiles, plastic films, wires, printed materials, magnetic tapes, metal strips and wires, etc., the unwinding and coiling tension of the strips or wires is critical to the quality of the product. To this end, constant tension control is required That is, the product is subjected to good tension during the winding process, and remains unchanged from beginning to end.
Tension control refers to the ability to permanently control the tension of raw materials as they are conveyed on the equipment. This control must be effective for any running speed of the machine, including acceleration, deceleration and uniform speed of the machine. Even in emergency stop conditions, it should be able to ensure that the cut object is not damaged. The stability of the tension control is directly related to the quality of the slitting product. If the tension is too large, it will cause the tensile deformation of the processed material; if the tension is too small, it will deform the layer-to-layer stress of the coiled material, causing uneven winding and affecting the processing quality. In the strip winding system, the tension control system occupies an important position, and it is quite complicated.
The tension controller is a system developed by a single-chip microcomputer or some embedded devices and peripheral circuits. It is a control instrument. It can directly set the tension value to be controlled, and then directly input the signal of the tension sensor as the tension feedback value. After the deviation is obtained through the comparison, it is input to the PID and other controllers for processing, and it is output to the external actuators for control, and finally the purpose of small deviation and fast system response is achieved.
The effects of tension control include:
1. Ensure that the continuous production and processing process can be performed normally, that is, ensure that the material flow rate of the processed material is the same in all parts of the continuous production line, so as to meet the requirements of neither stacking nor breaking;
2. Ensure the quality of the processed product, such as dimensional accuracy (thickness, width, cross-sectional shape, etc.), straightness, winding tightness, shape and material performance, etc. meet the standard requirements.
The above points about the relevant knowledge about tension control, I hope to be helpful to everyone's work. For more information, please pay attention to the website of Hailing Magnetic Powder Company: http://rad-ko.com