US 11,098,417 B2 · Yarn twisting method and device for ring-spinning machine

Abstract

A yarn twisting method and device for a ring spinning machine is provided. The twisting method comprises the following steps: feeding three roving strands (1, 2, 3) into a back roller (8) of the ring spinning machine; after drafting, the three roving strands, three fiber strands (1, 2, 3) exiting from a nip point of a front roller (10), wherein a fiber strand (2) in the middle forms an angle with a plane formed by the other two fiber strands (1, 3), and thus the three fiber strands (1, 2, 3) form a multi-strand spinning triangle region having a three-dimensional spatial form; and in the multi-strand spinning triangle region, the three fiber strands (1, 2, 3) obtaining twist by means of a ring traveler of the ring spinning machine, and the twisted fiber strands (1 ,2, 3) are combined into a composite yarn (4) through a convergence point.

Claims8

Dependent claims

A yarn twisting method for a ring spinning machine, comprising:

feeding three roving strands into a back roller of the ring spinning machine and drafting the three roving strands into three fiber strands;
lifting a middle fiber strand of the three fiber strands by a multi-strand twisting mechanism installed at a nip point of a front roller, so that for the three fiber strands exiting from the nip point of the front roller the middle fiber strand forms an angle θ greater than zero degrees with a plane formed by the other two fiber strands, and thereby the three fiber strands form a multi-strand spinning triangle region having a three-dimensional spatial form;
and
in the multi-strand spinning triangle region, the three fiber strands obtaining twist by means of a ring traveller of the ring spinning machine thereby forming twisted fiber strands, and the twisted fiber strands combined into a composite yarn through a convergence point.

1 more element

A yarn twisting apparatus for a ring spinning machine, comprising a back roller, a middle roller and a front roller, wherein three roving strands are fed into the back roller in parallel;

after drafting the three roving strands into three fiber strands, the three fiber strands exit from a nip point of the front roller, wherein a middle fiber strand of the three fiber strands forms a first angle with a plane formed by the two other fiber strands, and thereby the three fiber strands form a multi-strand spinning triangle region having a three-dimensional spatial form;
and in the multi-strand spinning triangle region, the three fiber strands obtain twist by means of a ring traveller of the ring spinning machine to form twisted fiber strands, and the twisted fiber strands are combined into a composite yarn through a convergence point, and
wherein the yarn twisting apparatus further comprises a multi-strand twisting mechanism installed at the nip point of the front roller for lifting the middle fiber strand, such that the middle fiber strand and the two other fiber strands are not in the same plane, and the first angle formed is larger than 0 degrees and less than or equal to 45 degrees.

Dependencies are inferred from the claim text.

Yarn twisting method and device for ring-spinning machine

Life of this patent

Yarn twisting method and device for ring-spinning machine

Life of this patent

Abstract

Claims8