Textiles: spinning – twisting – and twining – Apparatus and processes – Monitor and control
Patent
1991-12-19
1995-03-28
Hail, III, Joseph J.
Textiles: spinning, twisting, and twining
Apparatus and processes
Monitor and control
57 97, D01H 1244
Patent
active
054005825
ABSTRACT:
In a textile machine with a drafting arrangement and textile spindles, the spindles are driven by an electric main drive. The drafting arrangement cylinders are coupled so that their speed is a given proportion of the speed of the main drive. The coupling is via a position-controlled brushless D.C. motor with electronic commutation for driving the drafting arrangement. An additional flywheel mass on the drafting arrangement drive is dimensioned so that the slowing-down time of the drafting arrangement is of the same order as the slowing-down time of the main drive, resulting in controlled slowing-down conditions if the voltage suddenly fails. The drafting arrangement motor can be made much smaller than hitherto. Also, the starting and slowing-down conditions can be accurately and sensitively controlled, thus reducing the risk of thread breakages.
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Machine Design p. 20, May 17, 1979 Electrical & Electronics Reference Issue, Section 1 Motors.
Hartmeier Werner
Huppi Stefan
Hail III Joseph J.
Hand Francis C.
Rieter Machine Works Ltd.
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