Negative pressure guide capturing type ring spinning method

Abstract

The invention relates to a ring spinning method, in particular to a negative pressure guide capturing type ring spinning method, and belongs to the technical field of textile processing. A negative pressure guide capturing device is arranged in front of each drawing system of an ordinary ring throstle, fiber strands drawn and output by the drawing systems are twisted to form slivers, the slivers enter holding grooves of capturing holding devices and guided by negative pressure airflow inside the holding grooves, the fiber at the edges of the fiber strands is tightly attached to a sliver body, the fiber and rotary sliver surfaces are wound and combined before entering a exhaust inlet and then are captured on the sliver body, the part not captured forms yarn hairiness, the yarn hairness on the surfaces of the slivers are subjected to friction holding on a suction channel and the inner walls of the holding grooves under the action of negative pressure, and are wound on the sliver body in a tensioned state to be eliminated, the quality of finished yarns is improved, and the slivers output by the holding grooves pass through yarn guide hooks, steel collars and bead rings and finally are wound on a bobbin. The involved negative pressure guide capturing devices are reasonable in structure, convenient to operate and easy to use and popularize.

Description

technical field [0001] The invention relates to a ring spinning method, in particular to a negative pressure guided and captured ring spinning method, which belongs to the technical field of textile processing. technical background [0002] Hairiness is one of the important indicators to measure the quality of yarn. Yarn hairiness not only affects the production efficiency of weaving, knitting and other post-processes, but also affects the appearance quality of the final product. Especially today, when high-speed shuttleless looms are widely used, reducing yarn hairiness is of great significance. [0003] Yarn hairiness occurs during the spinning process of ring spinning. The key problem in the spinning process of ordinary ring spinning is: the front roller jaws press the fiber strands into a flat ribbon shape, and under the action of twisting torsion, the fibers in the flat ribbon fiber strands are transferred from inside to outside, when the fibers A certain part has ent...

AI Technical Summary

Problems solved by technology

The key problem in the spinning process of ordinary ring spinning is: the front roller jaws press the fiber strands into a flat ribbon shape, and under the action of twisting torsion, the fibers in the flat ribbon fiber strands are transferred from inside to outside, when the fibers A certain part has entered the yarn body through internal and external transfer. At this time, the head end of the fiber exposed from the yarn body is out of the grip of the front roller jaw, and cannot enter or wrap around the main body of the yarn body again, thus forming hairiness; when the fiber is in the At the edge of the flat ribbon-shaped fiber strands, the adhesion and cohesion between the fibers and the main body of the twisted strands is weak. As soon as the fibers come out of the nip of the front roller, they are easily changed by the negative pressure suction of the flute tube. The main body of the twisted sliver, at this time, after the fibers are completely separated from the grip of the front roller jaws, they are directly sucked away by the negative pressure of the flute tube to form tow fibers, reducing fiber utilization and ring spinning quality

However, the ironing device involved in this method is only limited to reducing the fiber modulus to improve the fiber's easy torsion and bending properties, and to improve the smoothness of the yarn.

Similarly, the ironing device still brings additional energy consumption problems, and the ironing and spinning effect on some fibers with poor heat sensitivity (such as wool fibers) is poor, and the yarn quality cannot be improved

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