Device for controlling operations of shaft frames of a weaving machine
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United States of America Patent
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-
Jul 8, 1997
Grant Date -
N/A
app pub date -
Dec 5, 1994
filing date -
Jun 10, 1992
priority date (Note) -
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status (Latency Note)
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Abstract
In a weaving machine a control unit for controlling the movement of the shaft frames or harnesses creates a feedback function through load cells and AC-servo motors that enables accurate shaft frame adjustment in forming an open shed. The weaving machine includes detecting mechanisms that detect parameters regarding condition the shaft frames. An individual control unit controls each of the shaft frames. The control units adjust the shaft frames in one or more positions to create open and closed sheds in the warp threads to enable the weft threads to be inserted by the shuttles as the warp threads change position. The control units receive feedback data of at least one of the parameters from the detecting mechanisms, such that operation of the control units incorporates the feedback data. Control systems control the control units to create a substantially constant level in the butting edge of the fabric irrespective of the positions of the shaft frames.
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