Super-high-draft device

Abstract

The invention relates to a super-high-draft device which comprises a front roller, a middle roller, a rear roller, a pressure bar, a bell mouth and leather collars, and is characterized in that a pressure bar is additionally mounted in a rear zone of the conventional draft device and the leather collar is additionally mounted on the rear roller, so that the friction field of the rear zone is increased, and control of floating fibers in the rear draft zone is strengthened. Harmful feathers are reduced, and the draft multiple is improved.

Description

technical field [0001] The invention relates to a three-roller super-large drafting device, which belongs to the technical field of textiles, in particular to a spinning frame super-large drafting device. Background technique [0002] Existing spun yarn all adopts three-roller double apron drafting device, and this device has three pairs of rollers, and bottom roller is the roller of active transmission, and top roller is all passive transmission. The transmission speed increases from front to back, so as to achieve the purpose of drafting roving into spun yarn. The device is equipped with an apron on the middle roller, so that it forms a front drafting area with the front roller, and a rear drafting area between the middle roller and the rear roller. Among them, the front drafting area is the main drafting area of ​​the spinning frame, and the drafting ratio is generally about 30 times, and the drafting ratio in the rear drafting area is generally about 1.4. Since the pos...

AI Technical Summary

Problems solved by technology

Since the post-drawing area adopts simple roller drafting, it is not conducive to controlling the floating fibers in the post-drawing. When the drafting ratio is too large, it will deteriorate the evenness

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