Man Roland Druckmaschinen Ag

Jens Gebel

Peter Hummel

Robert Ortner

Marc Hinz

Harald Wolski

Bernd Ullrich

Uwe Basel

Klemens Kemmerer

Harald Bayer

Georg Herzan

In a stack changing device, on a sheet feeder the remaining stack bars ( A, B) are pulled from the stack area, out-of-line in relation to each other. For improved stack joining, the inner remaining stack bars ( A, B) are each pulled more slowly than the outer remaining stack bars ( A, B).

Stack changing device

A feeder unit for a sheet-processing machine having a plurality of processing units is provided. The feeder unit includes a feeder, a feed table, and a feed drum. The feed drum is double-sized or larger in that it has a diameter at least twice that of the diameter of the plate or blanket cylinder of at least one of the processing units of the sheet-processing machine. The feed drum includes at least two gripper systems distributed symmetrically on a periphery of the feed drum. The feed drum is arranged with its rotational axis on or offset vertically above a horizontal plane formed by the rotational axes of the printing cylinders in the processing units. Each gripper system is pivotally supported on the feed drum and includes a gripper shaft, at least one gripper arranged on the gripper shaft, a gripper stop bar associated with the gripper, and a front guide arranged on the gripper stop bar.

Feeder unit for a sheet-processing machine

In a non-stop stack changing device, remaining-stack bars are pulled from the stack area one by one and out-of-line in relation to each other. To this end, a pull/push drive is provided, which makes it possible to push the remaining-stack bars simultaneously into the grooves of a pallet carrying a sheet stack. Furthermore, the pull/push drive makes it possible to pull the remaining-stack bars in pairs from inside outwards out of the stack area. In addition, the remaining-stack bars can be pulled in a first and second sequence in accordance with this model. An individual motor drive is provided for this purpose, which operates interlockingly on each individual remaining-stack bar.

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Seligenstadt, Germany

Jens Gebel