A device for improving yarn structure by moist heat drafting and smoothing

Abstract

The invention relates to a device for improving a yarn structure by drafting and stroking in a damp and hot condition, and belongs to the technical field of textile processing. According to the device, a groove-typed heating device is located between a wetting device and a drying device, the groove-typed heating device, the wetting device and the drying device are arranged in a shape like a Chinese character 'pin', a rear roller is arranged between the wetting device and the groove-typed heating device, a front roller is arranged between the groove-typed heating device and the drying device, yarns are wetted firstly, then drafting and stroking treatment is conducted on the yarns in the damp and hot condition, next hot drying and shaping are conducted, multiple circles of the yarns are wound on the front roller and the rear roller which have speed difference through a sixth yarn guide wheel, a third yarn guide wheel, a fourth yarn guide wheel, and a fifth yarn guide wheel, damp and hot drafting is conducted, fiber hooks inside the yarns are stretched, fiber orientation is increased, and the internal structure of the yarns is improved. The twisted yarn body main trunk makes contact with the upper groove wall of the heating groove in a stroking mode, hairiness is wound on the yarn body main trunk again, and an outer layer structure is improved. The processed yarns are processed through the drying device, and the structure is solidified. The device is reasonable in structure, convenient to operate and easy to apply and popularize.

Description

technical field [0001] The invention relates to a device for improving yarn structure by moist heat drafting and smoothing, and belongs to the technical field of textile processing. technical background [0002] Yarn mechanical properties are not only an important index to measure yarn quality, but also determine the quality and efficiency of subsequent yarn production and processing, especially the high-speed weaving characteristics of shuttleless air-jet looms, which require mechanical properties such as yarn strength and wear resistance very high. The mechanical properties of the yarn depend on the properties of the fiber material itself and the structure of the finished yarn. The surface structure of the yarn (such as the hairiness index) affects the wear resistance of the yarn. key factor in performance. However, after the actual spinning, twisting and winding forming, the yarn has more hairiness on the surface, more internal fiber hooks, and poor fiber orientation in...

AI Technical Summary

Problems solved by technology

[0011] Due to the adoption of the above technical solutions, compared with the prior art, a device for improving the yarn structure by moist heat drafting and smoothing according to the present invention has the advantages that: the present invention adopts a trough-type heating device located between the soaking device and the drying device. Between them, the three are distributed in a character shape. There is a rear roller between the soaking device and the trough heating device, and a front roller between the trough heating device and the drying device, so as to effectively realize the first soaking of the yarn, and then the wet heat pulling. Stretching and smoothing treatment, final heat drying and setting, the third yarn guide wheel and the sixth yarn guide wheel are on the same plane, the axes of the fourth yarn guide wheel and the fifth yarn guide wheel are on the same plane, due to the The difference in distance can realize the spiral winding of the yarn on the front roller and the rear roller to generate the holding force, and the difference in the speed of the front roller and the rear roller can generate the drafting force, and the yarn between the front roller and the rear roller is subjected to wet heat drafting, Stretch and eliminate the internal fiber hooks, increase the internal fiber orientation, and improve the internal structure of the yarn; especially the groove bottom of the fourth yarn guide wheel, the groove bottom of the fifth yarn guide wheel and the upper groove wall of the heating groove of the groove heating device are at the same On the plane, when the twisting and dynamic self-adjusting rearrangement of the yarn during the hot and humid drafting process results in twisting, the main body of the yarn body is in smooth contact with the upper groove wall of the heating tank, rewinding the hairiness to the main body of the yarn body, and improving the outer layer structure of the yarn; treatment After the yarn is heat-dried and shaped, the structure is stabilized and solidified to optimize the structure, effectively realize the coordinated regulation and improvement of the inner and outer structure of the yarn, greatly improve the fiber utilization rate and yarn strength, and not only achieve a comprehensive understanding of the inner and outer structure of the yarn Improvement, and solve the problems of hairiness entanglement and laxity when using a special hairiness reduction device to reduce hairiness, structure relaxation in untwisting, resulting in deterioration of evenness, follow-up friction hairiness rebound, etc.

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