Printing – Rolling contact machines – Rotary
Patent
1995-09-18
1997-03-18
Eickholt, Eugene H.
Printing
Rolling contact machines
Rotary
271 82, 271206, 271277, 101409, B41F 1324
Patent
active
056112777
ABSTRACT:
A sheet-conveying drum for use between units in a printing machine is provided with a plurality of gripper bridges arranged substantially circumferentially symmetrically on the drum surface. The gripper bridges include gripper impact strips that are adjustable substantially radially relative to the drum in order to accommodate printing materials of different thickness. Each gripper impact strip is adjusted by means of a positioning device that is arranged on the drum radially inward of the gripper impact strip and mounted so that it can move axially relative to the drum and cam the gripper impact strip radially. The axial movement of each positioning device is brought about by an adjusting means which is selectively operated by a drive that is disposed in one of the drum journals. The adjusting means includes a gear coupling and a shaft associated with each positioning device which is rotatably mounted on the drum and coupled to the corresponding positioning device so that rotation of the shaft moves the positioning rod in the axial direction. Each shaft is rotated by the engagement of external toothing on the shaft with a corresponding toothed rack which is included in the gear coupling. The toothed racks are adapted so that only one engages its corresponding shaft at any given time thereby resulting in individual adjustment of the gripper impact strips.
REFERENCES:
patent: 4848230 (1989-07-01), Haupenthal
patent: 5390601 (1995-02-01), Fricke et al.
patent: 5398606 (1995-03-01), Becker
patent: 5398609 (1995-03-01), Stiel
patent: 5516096 (1996-05-01), Whiteside et al.
Bayer Harald
Kemmerer Klemens
Eickholt Eugene H.
MAN Roland Druckmaschinen AG
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