Method and device for the optimization of the drawing process on autoleveller drawframes in the textile industry
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United States of America Patent
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Mar 31, 1987
Grant Date -
N/A
app pub date -
Sep 16, 1985
filing date -
Sep 25, 1984
priority date (Note) -
Expired
status (Latency Note)
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Abstract
A rapidly reacting measuring element is used at the delivery of the drafting zone on autolevelling drawframes used in the textile industry, which makes it possible to superimpose on the signal thus obtained from the measuring element by means of an electronic system a further measurement signal at the delivery of the drawing passage and thus correct the parameters governing the drafting values in such a way that even short-term variations in cross-section of the textile material are levelled out. The critical factors here are especially the delay time T of the textile material between the correcting element (pair of drafting rollers with variable speed of rotation) and the measuring element and also the overall amplification V of the measurement signal.
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