Adjustable drive for a sheet processing machine, especially a sheet-fed rotary printing press

摘要

At least three swivel gearwheels (2-4) are provided between the drive gearwheel (1) and output gearwheel (14). A swivel gear wheel (3) is mounted on a swing bar (5) to swivel about a further gearwheel (2). A spring drive with different thread engages on the swing bar and the drive is mounted in a swivel holding plate (11). The spindle drive has a spring (10) engaging in a threaded bore of the holding plate (11), a spindle nut connection (7,8) coupled with the swing bar and a gearwheel (9) in connection with both the spindle and the spindle nut connection. The gearwheel is biased by a servo drive and the thread pitches of the spindle and spindle nut connection are different.