Influence of quality on yarn quality(1)

1.Processing technology innovation
Roller pilot holes and threading were originally two processes. They were processed by ordinary machine tools. By innovation, they were changed to CNC machine tools, which were clamped and processed once, which greatly improved the concentricity of rollers. The original Roller surface polishing technology has greatly improved the smoothness of the surface of the rollers, ensuring that there are no defects inside and outside each groove of the rollers. It not only guarantees the grip, but also improves the life of the top roller. Roller straightening is changed from manual straightening to full automatic straightening, which eliminates the influence of manual straightening based on experience and feeling, so that rollers that cannot meet the quality requirements can be automatically removed, thereby ensuring the quality of the rollers.
2, middle roller pattern density
The diamond pattern is processed on the spinning section of the middle roller. The lower ring is driven by the middle roller and then the upper ring is rotated by the lower ring friction. The friction force generated by the interaction of the upper and lower ring controls the movement of the sliver to ensure the fiber The shift point is concentrated near the front jaw. If the lower apron slips on the middle roller and the slippery rate is high, it will inevitably affect the normal movement of the sliver, increase the unevenness of the yarn, and increase the details and thickness of the yarn accordingly. The density of the diamond pattern affects the friction coefficient between the surface of the middle roller and the lower rubber ring. Too large or too small the density of the diamond pattern will affect the slip rate of the rubber ring. It is proved through experiments that when the number of teeth of the middle roller is about 32 teeth / cm2, the rubber The lap slip rate is small.