Machining device and method for increasing single-yarn twist in siro-spinning

Abstract

The invention relates to a machining device for increasing single-yarn twist in siro-spinning. The other technical scheme of the invention provides a machining method for increasing the single-yarn twist in the siro-spinning based on the machining device. Aiming at problems in a siro-spinning production process, a self-propelled rotary false-twisting device is additionally arranged between a front roller jaw and a twisting point. Under the condition of normal operation, after fiber strands output by the front roller jaw pass through the self-propelled rotary false-twisting device, the twist of the fiber strands is increased. On one hand, the strength of the fiber strands on the section is improved and broken ends caused by non-uniformity are reduced; on the other hand, the fiber strands can be drawn into more twist in a combination process due to the non-uniformity of twist transmission, and the performance of a finished product is closer to that of folded yarns.

Description

technical field [0001] The invention relates to a device for pre-twisting the single yarn sliver output by the front roller in the process of siro spinning, so as to reduce the hairiness of the yarn, improve the strength of the yarn and expand the adaptability of processed products. Background technique [0002] Siro spinning is a spinning method that produces yarns with a strand-like structure on conventional ring spinning machines. Specifically, it refers to feeding two rovings with a certain distance on the spinning frame and drawing them at the same time, and then outputting them from the front roller. Due to the transfer of twist, the single yarn has a small amount of twist on it, and is further twisted after twisting. into ply-like yarns to form siro-spun yarns. [0003] In siro spinning, the fibers in the sliver are arranged helically around the strands. The surface hairiness of the yarn body is less than that of ring-spinning, and it has better wear resistance and ...

AI Technical Summary

Problems solved by technology

However, since the two slivers output from the nip of the front roller only have the twist given by the roving during the spinning process, after passing through the ring twisting device, the twist of the single yarn that constitutes the twin spun yarn is relatively small, and there is still a certain amount of twist. The hairiness on the surface of the yarn body affects the surface properties and strength of the yarn

In addition, there is still a certain distance between the converging point of the twisting process and the front jaw. Since the converging point fluctuates up and down during the spinning process, the twist of this section of yarn changes, resulting in unexpected drafting and more details.

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