Bending-resistant gripper carriage for use in offset printing machines, and process for manufacture thereof
AssigneeMaschinenfabrik Augsburg-Nurnberg Aktiengesellschaft
InventorsHerbert Heissler, Horst Wurtinger, Eberhard Willeitner
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Abstract
A bending-resistant gripper carriage structure is constructed in a fiber sandwich construction of the gripper carriage support. At least one layer of fibers is provided which may be in a shell-type mode with two layers of fibers each having different directions of elongation, one layer having fibers extending in the longitudinal direction of the gripper carriage support, and the other layer having fibers extending crosswise to the longitudinal direction. Several manufacturing techniques can be utilized such as fiber winding and/or lamination of fiber strips or tubes.
Claims28
A bending-resistant gripper carriage arrangement for offset printing machines which comprises a gripper bar of bonded fiber construction having a continuous, smooth, curved upper outer sheet receiving surface, a gripper shaft supported by said gripper bar and gripping brackets carried by said gripper shaft for movement between sheet gripping and sheet releasing positions, said gripping brackets gripping a sheet between said brackets and said upper outer sheet receiving surface of the gripper bar in said sheet gripping position.
A process for manufacturing bending-resistant gripper bars for gripper carriages in offset printing machines, comprising the steps of forming a core in the shape of a bar, applying a first layer of fibers onto the core and applying a second layer of fibers onto the first layer of fibers wherein the fibers of the first layer extend parallel to the longitudinal axis of the core and wherein the fibers of the second layer are arranged crosswise.
Dependencies are inferred from the claim text.