Preadjustment unit for plate cylinder - has electric motor connected by clutch or freewheel to compensate for different plate diameters. and web length

摘要

Electromagnetically operable couplings (10) join the plate cylinder (1-5) to the main drive shaft (6) which is connected to an impulse generator (16) registering in a counter (21) the shaft rotation. A three-phase current drive motor (19) rotates the main drive shaft (6) during the adjusting process. The motor is connected to the main shaft (6) through a free-wheel or clutch (14). The respective control impulse occurs when the counter has logged the impulse number (22) associated with the rotational angle.