Heidelberger Druckmaschinen Ag

Linde Aktiengesellschaft

Roland Angert

Carsten Kelm

Udo Lautenklos

Richard Hofmann

Norbert Th&uuml;nker

Peter Wilhelm G&ouml;gele

Bernward Welschof

Christian Bergmann

Hans-Dieter Dorr

A delivery for a machine processing flat printing materials includes a suction belt conveyer having conveying runs forming a support surface. To remove rejects or proof sheets as required, the delivery transports the materials along a transport path over a stack that is otherwise built up and transfers the sheets to the support surface. The physical position of the support surface can be varied while maintaining its generatrix. Therefore, the support surface can be adjusted in each print job to a working position in which secured transfer of removed printing materials to the suction belt conveyer is ensured. In a particular configuration, a latching device is provided that permits the conveying runs to escape from their working position in the event of a jam. Preferably, the latching device has a latching pin and a latching recess.

Delivery for a machine processing flat printing materials

This invention relates to a device to reduce pulsations on a hydrostatic positive displacement units, such as an axial or radial piston machine working both as a pump and as a motor with a reversible direction of rotation. In the displacement units, at least one piston is mounted so that it can move longitudinally in a cylinder bore which forms a cylinder chamber. The device has a buffer element which is in communication with the high-pressure side and can be brought into connection with the cylinder chamber. The device reduces pulsations on hydrostatic positive displacement units by which the reversing actions of the cylinder chambers are optimized and the pulsations are effectively minimized in a broad bandwidth of operating conditions. A switchable valve, in particular a non-return valve which opens toward the cylinder chamber is located in a connecting channel between the buffer element and the cylinder chamber.

Device to reduce pulsations on a hydrostatic positive displacement unit

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Pfungstadt, Germany

Roland Angert