Method for improving yarn evenness of spun yarns based on circular yarn path

Abstract

The invention relates to a device for improving the yarn evenness of spun yarns by using a vortex spray pipe with a circular yarn path, and belongs to the technical field of textile engineering. The device is named the vortex spray pipe for short. The vortex spray pipe is mainly composed of the yarn path and an air path, mounted on a rack of a spinning machine, and placed between a front roller and a snail wire. During usage, yarns which pass through the center of the yarn path are under the action of airflow which is vertically tangent to the yarn path inside the air path, the airflow which is sprayed into the yarn path from the air path forms a vortex, untwisting and twisting are conducted to the yarns with a great deal of hairiness, and thereby the hairiness is effectively reduced. Meanwhile, the yarn evenness and the strength of the spun yarns are improved. The device is simple in structure, low in equipment transformation cost, and convenient to mount, thereby having good development and application value.

Description

technical field [0001] A nozzle for reducing yarn hairiness by using vortex is called a vortex nozzle. The invention belongs to the technical field of textile engineering and relates to a novel device for reducing hairiness of ring spinning yarns. Background technique [0002] Ring spinning frame is currently the most widely used spinning method in the world, accounting for more than 90% of the total number of spinning spindles. The technology is mature, the spinning quality is stable, and the range of trial spinning yarn numbers is wide. In the ring spinning drafting system, the drafting force in the pre-drawing zone will untwist the yarn, and the drafting force in the main drafting zone will stretch the untwisted fiber bundles to the required fineness. The cohesion between the fibers in the bundle is basically eliminated, and the fiber bundle presents a certain width, but the twist transmitted through the traveler cannot all enter the front jaw line, and the width of the ...

AI Technical Summary

Problems solved by technology

But the disadvantages are: large equipment investment, high fixed cost and start-up cost, complex mechanism, and difficult transformation; (3) Sirospun, this technology has a certain effect on reducing yarn hairiness and improving yarn quality, but it is limited (4) Air-jet ring spinning (Jet-ring spinning), which improves hairiness by installing a nozzle on the spinning frame, but the nozzle uses four micro-holes whose axes are on the same plane. Generating eddy currents to reduce hairiness requires high processing precision, and the strength of the yarn produced by this method is lower than that produced by ordinary ring spinning, so it is difficult to promote industrialization

Images