Apparatus for adjusting an anglebar or a compensator roller in a folder of a printing press
Number of patents in Portfolio can not be more than 2000
United States of America Patent
Stats
-
Sep 17, 1991
Grant Date -
N/A
app pub date -
Nov 19, 1990
filing date -
Nov 19, 1990
priority date (Note) -
Expired
status (Latency Note)
Importance
Abstract
An anglebar and/or a compensator roller in a folder of a printing press is adjustable. A motor has an output shaft operatively connected with the anglebar and/or the compensator roller to, when driven, adjust the position of the anglebar and/or the compensator roller. A tachometer provides a speed reference signal indicative of the speed of movement of a web of sheet material relative to the anglebar and/or the compensator roller. A web position sensor provides an adjustment control signal indicating that the anglebar and/or the compensator roller should be adjusted. A computer responds to the speed reference signal and the adjustment control signal to control a DC drive. The DC drive drives the motor at a speed which varies with the speed of movement of the web of sheet material. The anglebar and/or the compensator roller is thereby moved to a desired position at a rate which is a function of the speed of movement of the web of sheet material relative to the anglebar and/or the compensator roller.
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