Drive for a rotating component of a rotary printing press

Details Drive for a rotating component of a rotary printing press Drive for a rotating component of a rotary printing press

1999-11-12

2001-01-30

Yan, Ren (Department: 2854)

Printing

Rolling contact machines

Rotary

C101S216000

Reexamination Certificate

active

06178884

ABSTRACT:

FIELD OF THE INVENTION
The present invention relates to the drive of a cylinder or a roller of a rotary printing press A hollow shaft motor is coupled to the cylinder or roller by couplings that compensate for angular deviations. The couplings are connected by a connector that is situated in the hollow shaft of the hollow shaft motor.
DESCRIPTION OF THE PRIOR ART
DE 94 22 044 U1 and DE 43 22 744 A1 respectively describe a directly driven cylinder of a rotary printing press. This cylinder is movably seated in eccentric bushings and is driven by an also movable electric motor.
U.S. Pat. No. 4,831,858 A discloses a drive for a vertically operating mill. Here, an end, which faces away form the mill, of a hollow shaft motor is connected by means of a uneversal joint with the mill. The mill itself is arranged fixed in place. The object of this patent is the reduction of the structural height.
GB 1,160,538, shows a drive for a cylinder, which is intended to be placed obliquely. The journal of the cylinder is seated by means of a rolling bearing in an eccentric bushing. The gear wheel is rotatably arranged on the eccentric bushing. The drive gear wheel and the journal are connected by means of a double-jointed coupling. It is the object of this arangement to prevent interference in the meshing of teeth.
SUMMARY OF THE INVENTION
The invention present is based on the object of creating a drive for a cylinder or a roller of a rotary printing press.
In accordance with the invention, this object is attained by the utilization of a hollow shaft motor to drive the cylinder or the roller. The motor is fixed in place while the axis of rotation of the cylinder or roller is shiftable. The motor rotor and the cylinder are both provided with couplings which compensate for angular deviation. These couplings can be joined by a connector arranged in the hollow shaft of the motor.
The advantages to be obtained by means of the invention consist in particular in that in connection with rotating components, whose rotating shaft is movable, or respectively whose position can be changed, a change in the tilt angle of a connector between the components and the drive motor is minimized. Stresses on compensation couplings are reduced in this way.


REFERENCES:
patent: 3584474 (1971-06-01), Church
patent: 4831858 (1989-05-01), Yoshizawa et al.
patent: 5656909 (1997-08-01), Gotz et al.
patent: 5813336 (1998-09-01), Guaraldi et al.
patent: 5953991 (1999-09-01), Geissenberger et al.
patent: 4322744 A1 (1995-01-01), None
patent: 9422044 U1 (1997-09-01), None
patent: 0669208 (1995-08-01), None
patent: 1160538 (1969-08-01), None

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