Strip steering
Number of patents in Portfolio can not be more than 2000
United States of America Patent
Stats
-
Oct 10, 2000
Grant Date -
N/A
app pub date -
Sep 16, 1998
filing date -
Sep 19, 1997
priority date (Note) -
Expired
status (Latency Note)
Importance
Abstract
Method and apparatus for steering a strip along a desired path. The strip 12 is fed along a guide table 13 by a pair of pinch rolls 50 which are of concave formation so as to grip the strip at two laterally spaced locations at the edges of the strip. A pair of fluid cylinder units 52 are independently operable to vary the pressures applied by the rolls at the two gripping locations to steer the strips. The position of the strip is monitored in the vicinity of the rolls 50 by a strip position sensor 51. Steering of the strip is controlled by a control signal derived from the output of sensor 51. The control signal in the sum of three factors the first of which is a measure of an instantaneous value of the lateral position of the strip, the second of which is a measure of an instantaneous lateral traversing velocity of the strip and the third of which is an integration of instantaneous values of the lateral position of the strip over a preceding time interval.
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