气流槽聚型集聚纺纱条捻度传递的力学分析

Mechanical analysis on twist propagation of compact yarn in compact spinning with pneumatic groove

为深入了解集聚纺纱系统,提高纱线的品质性能,重点探讨气流槽聚型集聚纺纱系统的捻度传递机制,介绍气流槽聚型集聚纺纱系统的结构特点,分析捻度传递过程中的纺纱张力变化,给出纺纱张力的求解过程,分析纱条在捻度传递过程中外力产生的阻力矩,及其与纱线自身回转产生的扭矩的关系。研究结果表明:纺纱张力、吸气管负压以及集聚罗拉的结构参数对纱条捻度的上传有一定的影响;通过调整纺纱张力与吸气管负压可以保证该系统所纺纱线的品质。

To further study the compact spinning system with pneumatic groove and improve the yarn quality,the twist propagation of compact spinning system with pneumatic groove and the construction features of the compact spinning system are analyzed.The change of spinning tension in infinitesimal radian is analyzed in the twist propagation,and the equations of spinning tension are also given.The moment of resistance to twist and the moment of torsion in process of twist propagation are analyzed.Results from this research confirmed that the spinning tension and the negative pressure in air suction pipe as well as related structure parameters of the pneumatic groove roller affect the twist propagation.For a designed compact spinning system,the negative pressure in air suction pipe and the spinning tension are adjusted for meeting the change of the compact yarn properties.