Processing device and method of air-jet vortex spun blended yarn

Abstract

The invention relates to a processing device and method of air-jet vortex spun blended yarn. The processing device is characterized by comprising a double-passage drafting unit, the double-passage drafting unit includes a front roller unit composed of a first front roller and a second front roller, a middle roller unit composed of a first middle roller and a second middle roller, and a rear rollerunit composed of a first rear roller and a second rear roller; the speed ratio of the first front roller, first middle roller and first rear roller and the speed ratio of the second front roller, second middle roller and second rear roller are adjustable only; a double-passage flared buncher is mounted between outlets of the first and second front rollers and a nozzle inlet and includes a first passage and a second passage; the first passage is collinear to the center axes of the nozzle inlet, guide pin, air twisting chamber, and hollow spindle yarn-guide tube; a transverse distance is provided between the second passage and the first passage. Online control is achieved for the blend ratio of two fiber components of air-jet vortex spun blended yarn, and for its inner and outer layer layout.

Description

technical field [0001] The invention relates to a processing device and method for air-jet vortex blended yarn, belonging to the technical field of textiles. Background technique [0002] The spinning process of air-jet vortex spinning is as follows: compressed air is sprayed tangentially into the air-twisting chamber through four nozzle holes along the inner wall of the nozzle, forming a three-dimensional high-speed rotating strong negative pressure vortex field, and the airflow velocity in the air-twisting chamber is in the position of the central axis. U-shaped distribution law with lower and higher positions around (Han CC, Xue WL and Cheng LD, Textile Res J, 86(14):1498-1506, 2016); the quantitative fiber strands after the drawing process are drawn by the nozzle After the inlet enters the air-twisting chamber, the fibers located at the central axis are easily guided by the guide needle and adsorbed by the negative pressure eddy current field, and directly enter the holl...

AI Technical Summary

Problems solved by technology

[0003] Blended yarn refers to the yarn that is mixed and spun by two or more fibers of different components in a certain proportion. The air-jet vortex blended yarn technology currently only involves the process of fiber mixing before spinning, such as: authorized The date of the announcement is February 22, 2017, the authorized announcement number is CN104480592B, and the Chinese invention patent titled "a blended yarn containing 11 different fibers and its production method" discloses an air jet for producing multi-component fiber blends. The method of vortex spinning blended yarn, in which the multi-component fibers need to go through complex processes such as cotton bag blending, sliver blending, and cotton sliver blending before spinning, and the production efficiency is low

The main problem in the current production of air-jet vortex blended yarn is that the online regulation of the fiber blending ratio and the distribution of the inner and outer layers of the yarn cannot be realized

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