Apparatus for adjusting an anglebar or a compensator roller in a

Details Apparatus for adjusting an anglebar or a compensator roller in a Apparatus for adjusting an anglebar or a compensator roller in a

1990-11-19

1991-09-17

Look, Edward K.

Sheet-material associating

Associating or disassociating

Signature associating

270 10, 270 18, 270 43, 270 19, 226197, 226199, B65H 3900

Patent

active

050488104

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.

REFERENCES:
patent: 2506053 (1950-05-01), Zuckerman
patent: 3556509 (1971-01-01), Crum
patent: 3679116 (1972-07-01), Hamlin
patent: 3734487 (1973-05-01), Treff
patent: 4155496 (1979-05-01), Houck

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