多供一梳并联在自由端纺纱短流程应用的工艺创新

Technological Innovation of Several Supplying One Carding-drawing Unit Applied in Open-end Spinning Short Process

为了实现梳并联技术在自由端纺纱流程中的产业化应用,分析其中存在梳棉机与并条机产能不平衡问题的原因,提出多供一大缓存量生条缓存式输送梳并联系统配置方案,以及在转杯纺流程应用“偶数法则”、在涡流纺流程应用“奇数法则”的工艺设置要点;通过理论探讨、类比分析以及试纺,验证转杯纺、涡流纺流程中棉条并合或定量增大对降低混合不匀、降低结构不匀以及对牵伸的效应,提出在梳并联技术中应用“生条定量换取并合根数”的工艺新理念,并与组合式牵伸机(IDF)工艺进行类比。指出:多供一大缓存量生条缓存式输送梳并联技术方案,突破梳并联中梳棉机速度受并条机速度和生条输出线速度制约的瓶颈,其应用进一步缩短自由端纺纱流程;梳并联机组应用以“生条定量换取并合根数”的并合与牵伸新工艺理念,能达到与传统工艺相同或相近的并合和牵伸效应;多供一大缓存量生条缓存式输送梳并联技术方案在自由端纺纱短流程的应用,契合纺纱生产降本增效和管理优化的需求,其产业化推广已具备基础条件。

In order to realize the industrialization application of the carding-drawing unit technology in the open-end spinning process,the reasons for the production capacity imbalance between carding machine and drawing frame are analyzed,and the configuration scheme of the caching type transfer carding-drawing system with several supplying one large storage of slivers is put forward,as well as the key points of applying“even number rule”in the spinning process and“odd number rule”in the vortex spinning process.Through theoretical discussion,analogical analysis and test spinning,the effects of sliver blending or weight per unit increase on reducing blending irregularity,structural irregularity and drafting in rotor spinning and vortex spinning processes are verified.A new process concept of“weight per unit of card sliver in exchange for the combining number”applied in carding-drawing unit technology is put forward,and the new process is compared with Integrated Drafting Frame(IDF)process.It is pointed out that the technology scheme of using caching type transfer carding-drawing unit with several supplying one large storage of slivers breaks through the bottleneck that the speed of carding machine is restricted by the speed of drawing frame and the output speed of slivers,and its application can further shorten the open-end spinning process.The application of the new process concept of“weight per unit of card sliver in exchange for the combining number”can achieve the same or similar combining and drafing effects as the traditional process.The application of the technology scheme of the caching type transfer carding-drawing system with several supplying one large storage of slivers in the short process of open-end spinning meets the needs of cost reduction and efficiency increase and management optimization of spinning production,and its industrialization promotion has the basic conditions.