Large bobbin and small bobbin mixed control method

Abstract

The invention relates to a large bobbin and small bobbin mixed control method. Tension F is set on a human-computer interface and transmitted to a PLC controller, the tension F and yarn linear velocity V obtained through calculation are transmitted to a direct current servo controller through the PLC controller, the measured bobbin revolution number R is transmitted to the direct current servo controller, the revolution number R is the number of bobbin rotating rings in unit time, N is calculated by the direct current servo controller according to formulas: the practical bobbin rotating diameter D=V / (R*pi), and the servo motor output torque N=DF / 2, namely N=FV / (2R*pi), and finally the output torque of the direct current servo motor is controlled by the direct current servo controller according to calculation results. By means of the large bobbin and small bobbin mixed control method, the aim that bobbins different in diameter are the same in yarn producing tension is achieved, the aim that the tension is kept constant in the process that the bobbins are gradually reduced is guaranteed, the warp knitting beaming quality is improved, and the production difficulty and the production cost are reduced.

Description

technical field [0001] The invention relates to the field of textile manufacturing, in particular to a method for controlling the mixed use of large and small yarn bobbins. Background technique [0002] At present, some warping machines (such as split warping machines, plastic flat yarn and other warping machines) on the market are controlled by AC torque motors on the bobbins (such as chemical fiber mother silk, plastic flat yarn, etc.) All the torque motors use the same voltage to control the tension of yarn output from the bobbins, and there are many bobbins on the warping machine. This control method allows users to use bobbins with the same diameter. After winding and use, there will inevitably be differences in diameter. In the production process, this bobbin control method increases the inconvenience of use and causes waste of raw materials. Contents of the invention [0003] The object of the present invention is to provide a control method for mixing large and sm...

AI Technical Summary

Problems solved by technology

[0002] At present, some warping machines (such as split warping machines, plastic flat yarn and other warping machines) on the market are controlled by AC torque motors on the bobbins (such as chemical fiber mother silk, plastic flat yarn, etc.) All the torque motors use the same voltage to control the tension of yarn output from the bobbins, and there are many bobbins on the warping machine. This control method allows users to use bobbins with the same diameter. After winding and use, the diameter will inevitably be different. In the production process, this method of bobbin control increases the inconvenience of use and causes waste of raw materials.

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