棉纺环锭细纱机纺纱动力的研究

本文包含了下面三部分的内容: 1.对环锭细纱机纺纱动力的基本概念进行了讨论。纺纱动力是由七部分的动力消耗所组成,其中钢丝圈的摩擦功率占有最大的比重。 2.提出了瞬时纺纱功率的测试方法,并利用该法在高速、纺中支纱的情况下,对纺纱动力进行了测定,得到了一些重要的结论:①在钢领板升降动程中,大直径纺纱功率大于小直径纺纱功率;②在一落纱中,纺纱功率的大小具有一定的分布。最大功率发生在成形结束大直径时,而最小功率发生在大纱小直径时;③在实际纺纱中,纺纱功率是气圈高度的指数函数,其指数的变化范围为:2.1—2.6。此外,对锭速与纺纱功率的关系,钢丝圈重量与纺纱功率的关系也作了测定与讨论。 3.讨论了减少纺纱动力消耗的途径:①通过设计新型钢领钢丝圈来减小一落纱的平均张力;②通过改变导纱钩的升降型式来降低一落纱的平均气圈高度。

A STUDY OF SPINNING POWER IN COTTON RING FRAME

Spinning power in the ring frame is dealt with in three respects: 1. A general concept of spinning power in ring frame is discussed. Power consumption is claimed to be composed of seven parts such as that caused by traveller friction and that caused by air resistance in ballooning, with the former accounting for the greatest proportion. 2. A method for measuring instantaneous spinning power is devised. The measuring results reveal some important laws concerning spinning power, namely (A) During one lift of the ring plate, the spinning power consumption is larger at the shoulder than at the nose; (B) The varying winding diameter and balloon height lead to a power distribution during one doffing cycle, with the maximum at the completion of cop bottom build motion and the minimum at the nose of the doffing position, and (C) The spinning power forms an exponential function, varying 2.1--2.6, to the balloon height. 3. The ways are found to reduce spinning power consumption, as by modifying ring and traveller, chaging the form of thread guide movement or reducing the mean height of the balloon.