Study on Pneumatic Splice

An ideal pneumatic splice has not only interminglings in the middle, but also many small wrappings on both sides of the spliced region, and must have near overlapping loopy wrappings at both ends. Only the fluffy and hairy untwisted yarn ends obtained from a swirling jet untwisting can generate many small wrappings when spliced.To get the fluffy and hairy untwisted yarn ends, a small swirling intensity value X must be used to eliminate a reverse flow zone. To increase the wrappings at both ends, a larger swirling intensity value X must be used to form a reverse flow zone. Only a perfect splice can better the yarn's appearance,increase its strength and make it impossible for its fibers to slip easily.     

自动络筒机空气捻接器的机构分析与设计

利用机构分析和设计方法分析纱线捻接的机构运动,对捻接过程中纱线的抓取和导引机构进行运动剖析,以便设计该导纱空间机构及有关的凸轮廓线,为空气捻接器机构的设计改进提供理论基础.     

几种退捻加捻法测试转杯纱捻度的比较

国内外测试转杯纱捻度的方法很多,如二重法、三倍退捻加捻法、一次退捻加捻法(GB 2543-81)、一次退捻加捻法(FZ/T 10001-92)和二次退捻加抢法等,在分析了前3种方法测试原理的基础上,通过对后3种方法测试原理的分析,指出了上述5种方法测试结果所呈现的规律性及各种方法的特点,为根据测试试样特点等因素选用恰当的测试方法提供理论依据.