Device for laterally aligning sheets in a feeder of a sheet-fed

Details Device for laterally aligning sheets in a feeder of a sheet-fed Device for laterally aligning sheets in a feeder of a sheet-fed

1996-07-08

1999-09-07

Milef, Boris

Sheet feeding or delivering

Feeding

With means to align sheet

271246, 271254, 271277, 101410, B65H 702

Patent

active

059474696

ABSTRACT:
Device for laterally aligning sheets in a feeder of a sheet-fed rotary printing press wherein sheets having respective leading edges aligned at front lays of a feeder table are gripped by a gripper system of a pregripper in succession individually at an edge region thereof, and transferred with a swivelling or revolving movement to a gripper system of a revolvingly driven feed cylinder, includes motorized adjustment elements for laterally displacing at least one of the gripper systems transversely to sheet travel through the printing press, measuring elements for determining an actual position of a side edge of a respective sheet on the feeder table, and a setpoint- actual value comparator for comparing a setpoint position of the side edge of the respective sheet on the feeder table with the actual position of the side edge determined by the measuring elements, and for generating pulses for controlling the measuring elements in accordance with the comparison.

REFERENCES:
patent: 3743277 (1973-07-01), Bolza-Schunemann et al.
patent: 3985074 (1976-10-01), Bonsch
patent: 4702469 (1987-10-01), Jeschke et al.
patent: 4833989 (1989-05-01), Wieland

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