气流导向装置对紧密纺负压分布影响及其成纱性能  

Effect of an airflow guide device on the negative pressure distribution of compact spinning and its yarn formation performance

作　　者：龚浩然 余豪 胡胜伢 杨圣明[2] 刘可帅 GONG Haoran;YU Hao;HU Shengya;YANG Shengming;LIU Keshuai(School of Textile Science and Engineering,Wuhan Textile University,Wuhan 430200,China;Anhui Huamao Textile Co.,Ltd.,Anqing 246018,China)

机构地区：[1]武汉纺织大学纺织科学与工程学院,武汉430200 [2]安徽华茂纺织股份有限公司,安徽安庆246018

出　　处：《现代纺织技术》2023年第5期151-156,共6页Advanced Textile Technology

基　　金：国家自然科学基金青年基金项目(52203373)。

摘　　要：为改善气流对紧密纺成纱质量的影响,设计了一款气流导向元件,通过改变气流对纱线的作用方向,探究气流导向元件对成纱质量的影响及其成纱原理。针对不同线密度的纺纱工艺,设计了相应的试验方案,并开展了对比研究,以评估所纺不同线密度纱线的条干、毛羽和强力性能。结果表明:气流导向装置可以显著改善纱线的机械性能。相较于传统紧密纺纱线,新式纺纱线在强力和毛羽方面表现得更加优异,但条干性能方面略有降低。同时,随着所纺纱线线密度的降低,强力的提高效果更加明显,而毛羽改善效果则随着线密度的增大而变得更好。在纺7.4 tex纱线时,强力提高了7.4%,同时3 mm毛羽降低了16.0%;在纺14.8 tex纱线时,强力提高了3.0%,同时3 mm毛羽降低了58.1%。Although new technologies such as compact spinning and torsion spinning have been widely used in today's spinning environment,ring spinning as the mainstream spinning method still has the advantages of reasonable structure and a wide range of suitable spinning numbers.New technologies such as compact spinning have been extended based on ring spinning to meet the increasing demand for yarn quality.Specifically,compact spinning is characterized by the addition of a fiber agglomeration device that agglomerates the bearded strips after spinning and then completes the twisting process.This method improves yarn quality by effectively reducing the width of the output strands,thereby reducing or even eliminating the twisting triangle,increasing the fiber holding force,and improving yarn quality.In actual production,fiber agglomeration is mainly achieved by the negative pressure generated by the suction device.However,in this process,problems include excessive energy consumption and unreasonable negative pressure distribution to the fibers.Therefore,to improve yarn quality and reduce energy consumption at the same time,we proposed the design of an airflow-guiding device based on negative-pressure compact spinning.By adding an airflow guiding device above the suction port,the direction of airflow on the yarn and the magnitude of the force can be changed to improve the fiber agglomeration effect.In the spinning process for different thread densities,we proposed a corresponding experimental scheme and comparatively studied the dryness,hairiness,and strength properties of the compact spun yarns.The experimental results show that the airflow-guiding device significantly changes the yarn properties.Compared with conventional compact spun yarns,the strength and hairiness of the yarn are significantly improved,but the dryness deteriorates.The improvement of strength is more obvious as the density of the spun yarn decreases,while the improvement of hairiness is better as the density of the yarn increases.For example,in spinning 7.

关 键 词：气流导向装置 紧密纺 成纱原理 纱线质量 集聚区 

分 类 号：TS112.3[轻工技术与工程—纺织材料与纺织品设计]