【摘要】 气流纺纱机中的阻捻盘对气流杯内纱臂上一段纱的捻度高低有很大影响。也可以说,气流纺纱器的纺纱性能在一定程度上与阻捻盘设计有关。一些研究工作者曾就阻捻盘设计对成纱质量的影响进行了若干实验研究,然而有关阻捻盘设计对杯内捻度影响的数值分析尚未见有正式文章发表。本文就是借助电子计算机对阻捻盘摩擦区内纱条所受的摩擦力矩以及纱线离开摩擦区时的最终张力进行了数值分析。文章的第二部分主要是计算了在不同阻捻盘设计条件下的纱线与阻捻盘摩擦表面间的包围角大小;第二部分着重计算与分析了不同阻捻盘设计和纺纱工艺条件对摩擦力矩与最终张力值的影响。最后,就本文所得到的若干理论上的结果在生产实际中的应用以及本文所涉及的这一领域里的进一步工作进行了若干必要的讨论。更多还原

【Abstract】 The doffing tube has a great influence on twist level inside the rotor.The spin- ning performance of the rotor spinner is dependent to a certain extent on the doffing tube design,which some research workers have made a number of experimental inves- tigations of its influence upon the spun-yarn properties.However,no publication which deals with the numerical analysis of the doffing tube design for false twist level inside the rotor has been found.In this paper the author has made a numerical analysis of the moment of friction arose from doffing tube during the processes of spinning and,also,calculated by means of numeration the final yarn tension when yarn is passing through the friction zone of the doffing tube.The first part of the paper deals primarily with the calculation of the warp angle,while the second main- ly focuses on analysis of the influence of the different doffing tube designs and spinning parameters on the amount of the friction moment and the final yarn ten- sion.In the end the author makes a discussion about the application of these theore- tical results to practical production and at the same time suggests some further research work to be done afterwards in this field.更多还原