Title:
PRODUCTION METHOD AND APPARATUS OF EXCELLENT SPINNING YARNS
Document Type and Number:
WIPO Patent Application WO/1991/002834
Kind Code:
A1
Abstract:
This invention relates to a production method and apparatus for improving the quality of yarns spun by a spinning frame or the like and improving its productivity. In a known fore-spinning machine or ring spinning, napping increases due to the centrifugal force resulting from revolution at the time of twisting and take-up and the tensile strength of the spun yarns drops remarkably. This invention solves this problem. The production method of the present invention is characterized in that a suction-twisting pipe (S) including generation means of air eddy flow is mounted at a delivery point of a drafted sliver (F) so that the drafted slivers (F) can be sucked by the suction force and at the same time, the slivers (F) are contracted and turned in such a manner as to be gathered in a bundle form. The production apparatus of the present invention is characterized in that a ring member (H) having resilience is fitted to part of the suction-twisting pipe (S) described above, the other end portion is fixed onto the beam (B) of the front surface of the spinning frame and the suction-twisting pipe (S) is supported in such a manner as to be capable of rocking.
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Inventors:
NEGISHI EISABRO (JP)
Application Number:
PCT/JP1989/001068
Publication Date:
March 07, 1991
Filing Date:
October 18, 1989
Export Citation:
Assignee:
NGS BOKI KABUSHIKI KAISHA (JP)
International Classes:
D01H1/00; D01H1/02; D01H1/115; (IPC1-7): D01H1/00; D01H7/90
Foreign References:
| JPS6325089B2 | 1988-05-24 | |||
| JPS58169529A | 1983-10-06 | |||
| JPS50233U | 1975-01-06 |
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