Driving mechanism for a cylinder of a rotary printing machine

Details Driving mechanism for a cylinder of a rotary printing machine Driving mechanism for a cylinder of a rotary printing machine

1999-11-29

2001-03-20

Eickholt, Eugene (Department: 2854)

Printing

Rolling contact machines

C101S217000, C101S247000, C101S142000, C101S144000

Reexamination Certificate

active

06202555

ABSTRACT:

FIELD OF THE INVENTION
The present invention relates to a driving mechanism for a cylinder of a rotary printing press. This cylinder is seated in a eccentric bushing and carries a drive gear on a journal of the cylinder. The drive gear is engaged by a drive pinion.
DESCRIPTION OF THE PRIOR ART
EP 0 644 048 A2 describes a drive mechanism for a group of cylinders of an offset rotary printing press by means of a toothed belt.
DE 3704314 C1 describes an arrangement for adjusting the backlash between the drive wheels of sheet-transporting cylinders of a rotary printing press. In this device, each cylinder is pivotably seated in eccentric bushings.
SUMMARY OF THE INVENTION
The object of the present invention is based on providing a drive mechanism for a cylinder of a rotary printing press.
The object is attained in accordance with the invention by the arrangement of the axes of rotation of a shiftable transfer cylinder, a fixed drive and a fixed printing cylinder in a manner that will minimize gear backlash when the transfer cylinder is shifted.
The advantages which can be obtained by the present invention rest, in particular, in that in connection with cylinders, whose axis of rotation can be changed in location, or respectively in position, a change in the backlash between a toothed gear of the cylinder and an assigned drive pinion is minimized when the position is changed.


REFERENCES:
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patent: 4072104 (1978-02-01), Schaffer
patent: 4301728 (1981-11-01), Jaffee et al.
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patent: 4945830 (1990-08-01), Maehara
patent: 5159878 (1992-11-01), Donelan
patent: 5423254 (1995-06-01), Kimura et al.
patent: 5706728 (1998-01-01), Motard et al.
patent: 753695 (1952-11-01), None
patent: 1113220 (1960-04-01), None
patent: 1259356 (1968-01-01), None
patent: 3704314 C1 (1988-01-01), None
patent: 0644048 A2 (1994-12-01), None

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