Printing couple of a printing unit of a printing press
A printing couple of a printing unit for a web-fed rotary press includes a transfer cylinder, a form cylinder, and an inking couple having at least one roller. The transfer cylinder is coupled to the form cylinder, and the form cylinder is coupled to at least one roller of the inking couple, by side-by-side straight gears arranged in a first gear plane. The drive motor is coupled to the transfer cylinder by side-by-side helical gears arranged in a second gear plane.
1 . A printing couple of a printing unit for a web-fed rotary press, the couple comprising:
a transfer cylinder;
a form cylinder;
an inking couple comprising at least one roller;
side-by-side straight gears arranged in a first gear plane to couple the transfer cylinder to the form cylinder, and the form cylinder to the at least one roller of the inking couple; and
side-by-side helical gears arranged in a second gear plane to couple a drive motor to the transfer cylinder.
2 . The printing couple of claim 1 wherein one of the straight gears and one of the helical gears are arranged on a shaft of the transfer cylinder.
3 . The printing couple of claim 2 wherein another one of the helical gears is arranged on a shaft of the drive motor and is coupled to the helical gear on the shaft of the transfer cylinder.
4 . The printing couple of claim 2 wherein another one of the helical gears is mounted on a separate shaft, the couple further comprising a compensating coupling which couples the separate shaft to a shaft of the drive motor.
5 . The printing couple of claim 2 wherein another one of the straight gears is arranged on a shaft of the form cylinder and is coupled to the one of the straight gears on the shaft of the transfer cylinder.
6 . The printing couple of claim 5 wherein another one of the straight gears is arranged on a shaft of the roller of the inking couple and is coupled to another one of the straight gears which in turn is coupled to the straight gear on the shaft of the form cylinder.
7 . The printing couple of claim 5 further comprising a dampening unit having a roller on a shaft, wherein one of the side-by-side straight gears is mounted on the shaft of the roller of the dampening unit and is coupled to the straight gear on the shaft of the form roller.
8 . The printing couple of claim 1 further comprising a dampening unit having a roller, wherein the side-by-side straight gears are arranged to couple the transfer cylinder to the roller of the dampening unit.