Drafting device with four rollers in ring spinner

Abstract

This invention relates to a four-roller drafting device of a ring spinning machine including a finished upper roller, a finished lower roller and a bracket set on a cradle, a collector and the finished upper roller are set on the bracket, a front lower bolt and a finished lower roller are set on a slider, the collector and the lower bolt are set between the front upper roller, the front lower roller, the finished upper roller and the lower roller and a slot of 0.6-1.5 mm is set between the collector and the front lower bolt, which increases total times of drafting and secures yarn quality.

Description

1. Technical field [0001] The invention belongs to the field of ring spinning machines, in particular to a four-roller drafting device of a ring spinning machine. 2. Background technology [0002] The ring spinning frame is a commonly used textile machine, which is used to twist and spin the cotton yarn strands into required spun yarns after step-by-step drafting. When the ordinary ring spinning frame is working, the fiber strands are drawn by the rollers in the drafting area. The impact of pressure makes its cross-section flat. When the fiber strands are sent out from the nip of the front roller, they enter the twisting zone and rotate at a high speed under the action of the lower traveler to complete the twisting action, thus forming a so-called "twisting triangle zone" at the nipper of the front roller. Due to the existence of the twisting triangular area, the fibers in the fiber strands are unevenly stressed during the twisting process, and the fibers are rotated inside...

AI Technical Summary

Problems solved by technology

However, the device has a flaky structure, which cannot completely solve the formed hairiness and affect the yarn quality.

Images