Gripper for a conveying device for conveying single-sheet or mul

Details Gripper for a conveying device for conveying single-sheet or mul Gripper for a conveying device for conveying single-sheet or mul

1993-11-29

1995-03-07

Kramer, Dean J.

Handling: hand and hoist-line implements

Grapple

Fixed and moveable jaw

294 991, 271204, 271277, 1988039, B65G 4786

Patent

active

053951514

ABSTRACT:
A gripper includes two gripper parts. The first gripper part is arranged pivotably relative to the other, second gripper part. The two gripper parts interact to securely hold a printed product at the free ends of the gripper parts. The first gripper part is mounted by a ball joint in a bearing part, which is seated unrotatably on a rotatably mounted hollow shaft. A compression spring is mounted in the first gripper part between the bearing part and the first gripper part, which is spherically mounted in the latter. The compression spring in the closed position of the bearing part exerts a compressive force on the first gripper part. The ball joint is offset rearwards with respect to the pivot axis of the bearing part. As a result, a rearward lengthening of the leg of the first gripper part is attained. This results in more favorable leverages and, with a given compression spring, accordingly results in higher clamping forces at the free end of the first gripper part.

REFERENCES:
patent: 4307801 (1981-12-01), Hansch
patent: 4381056 (1983-04-01), Eberle
patent: 4638906 (1987-01-01), Winiasz
patent: 4681213 (1987-07-01), Winiasz
patent: 4746007 (1988-05-01), Houseman
patent: 4852722 (1989-08-01), Houseman
patent: 4905818 (1990-03-01), Houseman
patent: 4921294 (1990-05-01), Klopfenstein
patent: 4953847 (1990-09-01), Honegger
patent: 4968081 (1990-11-01), Beight et al.
patent: 4982944 (1991-01-01), Eberle
patent: 5064187 (1991-11-01), Muller
patent: 5178262 (1993-01-01), Merkli et al.
patent: 5188349 (1993-02-01), Honegger

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