Abstract
In the ring spinning system, a dynamic twist-resistant device has been applied to improve yarn quality. In this paper, a mechanical model quantifies the relationship between twist blockage, yarn tension, and the parameters of the device and yarn when yarn passes through the dynamic twist-resistant device. During the modeling process, the force applied by the twist-resistant device was considered, and the twisting torque was precisely calculated by yarn tension rather than calculated by the assumption that yarn-twisting torque is linearly related to the yarn twist. Finally, twist blockage and yarn tension are given as a function of the normal force applied by the device, the radii of cylinders in the device, warp angle, deviation angle and radius of the yarn. The simulation results are presented and analyzed.
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