Precise separation device and method for down and hair fibers of animals

Abstract

The invention provides a precise separation device and method for down and hair fibers of animals. The device comprises an original down winding roller and a down fiber stripping roller, wherein first card clothing and second card clothing which have the same structure are arranged on surface circumferences of the original down winding roller and the down fiber stripping roller at equal angles, the first card clothing and the second card clothing are flat-head card clothing with arc bottoms, the rotating speed of the original down winding roller is smaller than that of the down fiber stripping roller, and the rotating directions of the original down winding roller and the down fiber stripping roller are identical. During usage, original down fiber containing down fiber and hair fiber winds around the original down winding roller, the original down fiber is gradually transferred to the down fiber stripping roller by the aid of negative pressure difference produced during rotation of the original down winding roller and the down fiber stripping roller, meanwhile, the hair fiber falls off during transferring as the rigidity and weight of the hair fiber are larger than those of the down fiber, so that precise separation of down and hair in the original down fiber flexibly carded on the basis of small distance and large space is realized, the carding times are reduced, and low-damage carding is realized.

Description

technical field [0001] The invention relates to the technical field of spinning, in particular to a precise separation device and separation method for animal fluff fibers. Background technique [0002] Special animal down fibers represented by yak down, camel down, cashmere, rabbit down, mohair, etc. have excellent wearability and are known as the soft gold in fibers. 90% of them are produced in China and are almost unique textile raw materials in my country. Therefore, there are few studies abroad on its processing and application, and my country's processing technology for special animal down represents the world level. Foreign research on special animal cashmere fibers is mainly concentrated on cashmere. [0003] At the end of the 19th century, Todd & Duncan cooperated with Dawson International to invent the world's first wool-free separating machine, became the world's first cashmere yarn production enterprise, and created the modern cashmere industry. In terms of prod...

AI Technical Summary

Problems solved by technology

"Japan Taikein model" adopts the structural design of automatic wool feeding hopper + opening + Taikein roughening + 2 combined flat machine, the pressure on the cotton feeding roller is strong, and the gripping force of the card clothing on the cashmere is relatively increased. The rough hair is separated from the fleece under the action of centrifugal rate, and the coarsening effect is better; however, the strong impact force of the licker-in roller leads to repeated strikes, so the damage to the fiber is relatively large, and the fleece is transferred by the fan for many times, and the moisture regain gradually decreases. As a result, static electricity increases, and the friction between cashmere and cashmere produces velvet grains, which makes carding difficult in the subsequent process, and the fibers are destroyed when entering the carding machine, resulting in increased velvet leakage and cover plate flowers, reducing the extraction rate

"British Dawson model" adopts the structure design of automatic feeding hopper + 6 sets of wind wheel transfer, loosening and coarsening + state carding + 2 combined cover machines, feeding by roller extrusion needle punching, weak striking force, Strong holding power, easy to comb, less damage to fibers, less shedding, high extraction rate; multi-group feeding, multi-group roughing, gradually remove different shapes of coarse hairs, and the effect of removing coarse hairs is better; However, this model still needs to be further improved in terms of raw material adaptability of cashmere fibers, reduction of fiber length damage, and improvement of extraction rate.

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