Apparatus for controlling the winding speed of roving in roving frame
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United States of America Patent
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-
Nov 12, 1985
Grant Date -
N/A
app pub date -
Jul 30, 1984
filing date -
Aug 2, 1983
priority date (Note) -
Expired
status (Latency Note)
Importance
Abstract
An apparatus for controlling the roving winding speed in a roving frame, in which a roving position detecting unit detects central positions of vibration of the roving in the vertical direction while suspended between a front roller of the drafting device and a flyer top by means of a plurality of photoelectric sensors. An average central vertical position of the vibrating roving is computed from the values measured by the roving position detecting unit, and a correction amount of the rotation speed of a bobbin is computed from the difference between the average central position and a desired value for controlling the roving winding speed and from a correction coefficient. A correction signal is generated corresponding to the correction amount, and the rotation speed of the bobbin is regulated based on the correction signal.
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