System for decelerating the drive of a web-winding apparatus
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United States of America Patent
Stats
-
Mar 27, 1984
Grant Date -
N/A
app pub date -
Jan 13, 1982
filing date -
Jan 17, 1981
priority date (Note) -
Expired
status (Latency Note)
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Abstract
A process for decelerating the drive of a web-winding apparatus including a yardage counter for the wound web and a speedometer for the web to be wound, comprising setting a computer for the nominal length of the web which computer, on the basis of the nominal length and of the instantaneous web speed, causes the drive to slow down to a standstill with a preset degree of deceleration; comparing said degree of deceleration with two different curves of which one would result in the nominal length of the web being undershot while the other would result in its being overshot if either curve alone were effective after deceleration has been initiated; and by means of the computer resetting the degree of deceleration on the basis of said two curves and switching from one to the other whenever the instantaneous degree of deceleration indicates the nominal length would be undershot or overshot.
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