A tension control device and control method for a copy warping machine

Abstract

The invention relates to the technical field of warping machine tension control, in particular to a tension control device for a copying type warping machine. The tension control device comprises a revolution encoder, a meter length encoder, a tension sensing device, a servo motor and a PLC or PC industrial control computer. The output end of the revolution encoder, the output end of the meter length encoder and the output end of the tension sensing device are connected with the input end of the PLC or the PC industrial control computer. The output end of the PLC or the PC industrial control computer is connected with the input end of the servo motor. When a mother beam works, the PLC or the PC industrial control computer will automatically record the meter length, the perimeter and a yarn tension value of the beam during different revolutions; when a son beam works, the PLC or the PC industrial control computer will perform data comparison on the condition that the revolutions of the mother beam are the same, and a tension roller is adjusted through a servo driving device. The tension control device can keep the yarn tension fluctuation range to be the minimum, and can precisely control the yarn tension.

Description

technical field [0001] The invention relates to the technical field of warping machine tension control, in particular to a tension control device and a control method for a copy warping machine. Background technique [0002] Warping is the process of winding a certain number of warp yarns in parallel on the warp beam or weaving beam according to the specified length and width. Warping requires the tension of each warp yarn to be equal and evenly distributed on the warp beam or weaving beam. [0003] At present, the control mode of the copy warping machine of the section warping machine is divided into two modes: the first one is to detect the tension through the tension sensor, and then adjust the tension through the frequency conversion drive device installed on the tension roller; the other One is to not install the tension sensor device, record the circumference and meter length data of the first warp beam, that is, the mother warp beam, and compare the child warp beam a...

AI Technical Summary

Problems solved by technology

The first control method only controls the yarn tension, so the control of the circumference of the warp beam cannot meet the high standard requirements, which will cause residual yarn on the creel. On the other hand, the adjustment accuracy of the variable frequency drive device is about 0.1%. In the process of tension adjustment, the tension fluctuation is too large

The second control method meets the control requirements in the control of the circumference of the warp beam, but in the process of tension adjustment, since the real-time tension of the yarn is not known, the tension may be too tight or too loose during adjustment, which will lead to The warp knitting machine will have the problem of defective cloth on the cloth surface

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