Printing – Work supporting members – Grippers
Patent
1994-09-08
1995-08-15
Eickholt, Eugene H.
Printing
Work supporting members
Grippers
271206, 271268, 271277, 101242, 101232, B41F 130
Patent
active
054409837
ABSTRACT:
Gripper control for a cyclically swingably driven pregripper for transporting single sheets in a sheet-fed printing press, the pregripper having at least one sheet gripper mounted on a free end of a swivel lever motorizingly pivotable about a frame-fixed swivel shaft, the gripper control including cams for forcibly moving the sheet gripper about an articulated shaft oriented parallel to the swivel shaft so as to close and open the sheet gripper upon sheet acceptance and sheet transfer, one of the cams being revolvable in a single revolution for cyclically shifting the other of the cams in the position thereof, the other of the cams being secured to a roller lever supported pivotally at a fixed location and having a cam roller resting on the one cam, relative positions of the cams being adjustable for determining the instants of closing and opening of the gripper, the other of the cams being a cam segment having two successive circular cam regions with radii of curvature of different length and a common center point, the cam segment being adjustable equidistantly to the circular cam regions with respect to the roller lever, the one cam revolving in a single revolution being effective for opening the gripper and the cam segment being effective for closing the gripper.
REFERENCES:
patent: 3903795 (1975-09-01), Suzuki
patent: 3992993 (1976-11-01), Kuhn et al.
patent: 4052055 (1977-10-01), Jirus
patent: 4290595 (1981-09-01), Thunker
patent: 4311093 (1982-01-01), Abendroth et al.
patent: 4370928 (1983-02-01), Weisbach et al.
patent: 5076165 (1991-12-01), Pollich
patent: 5125336 (1992-06-01), Germann
patent: 5142983 (1992-09-01), Kobler et al.
patent: 5343806 (1994-09-01), Fricke et al.
Dopke Stefan
Fricke Andreas
Eickholt Eugene H.
Greenberg Laurence A.
Heidelberger Druckmaschinen
Lerner Herbert L.
LandOfFree
Swinging pregripper of a sheet-fed printing press does not yet have a rating. At this time, there are no reviews or comments for this patent.
If you have personal experience with Swinging pregripper of a sheet-fed printing press, we encourage you to share that experience with our LandOfFree.com community. Your opinion is very important and Swinging pregripper of a sheet-fed printing press will most certainly appreciate the feedback.
Profile ID: LFUS-PAI-O-2174952