The combing machine refers to the machinery used to realize the combing process in the spinning process. The main function is to exclude short fibers, remove kinks (neps, wool particles, grass clippings, cocoon skin, etc.) in the fibers, make the fibers further straight and parallel, and finally make combed slivers with relatively uniform thickness.
The function of the drawing frame is to improve the internal structure of the sliver, so as to improve the uniformity of its long segments, reduce the unevenness of the weight at the same time, make the fibers in the sliver straight and parallel, reduce the hooks, make the fineness meet the requirements, and make different types or Raw materials of different qualities are mixed evenly to achieve the specified mixing ratio. According to the form of drafting mechanism, the drawing frame is divided into two categories: roller drafting drawing frame and needle carding machine.
According to the form of twisting mechanism, the roving frame is divided into wing spindle roving frame and twisting roving frame. The flyer roving frame continuously applies twist to the sliver by the rotation of the flyer to produce twisted roving. The rubbing roving machine relies on a pair of rubbing leather plates to clamp and twist the yarn sliver, forming false twists with positive and negative twists on the yarn sliver, and producing twistless roving. Flyer roving frames and rubbing roving frames can be divided into first pass, second pass and single pass roving frames.
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