Combined frictional false twisting device for ring spinning frame

摘要

A frictional false twister is disclosed. The twister has a plurality of rotating friction plates located between the nip of the front rollers and the yarn guide. The friction plates are staggeringly arranged for rubbing a twisted yarn. The spinning direction of the twisted yarn is opposite to the rotating direction of the friction plates. Through the action of the frictional false twister, the twist of the yarn between the false twisting device to the front nip can be increased, shortening the twisting triangle height, and increasing the spinning strength. As the yarn and the outer surface of the friction plate make relative sliding and rubbing, the friction damping force correspondingly reduces the spinning tension in the twisting triangle.

主权项

1. A ring spinning apparatus, comprising:
a yarn guide; a roller nip arranged to output a yarn toward the yarn guide, the yarn arranged to spin in a spinning direction; and a frictional false twisting device arranged to receive the yarn from the roller nip, wherein the frictional false twisting device comprises: a plurality of friction plates, located between the roller nip and the yarn guide, each friction plate comprising a peripheral outer surface; and a movement mechanism arranged to rotate the friction plates in a rotating direction different from the spinning direction, wherein at least two of said plurality of friction plates are located adjacent to each other but on different planes and rotated about different axes such that a segment of the yarn between the roller nip and the yarn guide is arranged to rub against the peripheral outer surfaces of said at least two friction plates, wherein the plurality of friction plates are arranged to rotate about a first rotating axis, a second rotating axis and a third rotating axis, and wherein said at least two friction plates comprises a first friction plate arranged to rotate about the first rotating axis, and a second friction plate arranged to rotate about a second rotating axis, said plurality of friction plates further comprising a third friction plate arranged to rotate in the first rotating direction about the third rotating axis such that the second and third friction plates are located on a first plane and the first friction plate is located on a different second plane adjacent to the first plane, and wherein each of the second and third friction plates has a diameter, and the second rotating axis and third rotating axis is separated by a distance greater the diameter, and wherein the first friction plate is arranged such that the peripheral outer surface of the first friction plate is tangential to a plane passing through the second and third rotating axes.