Man Roland Druckmaschinen Ag

Harald Wolski

Peter Hummel

Robert Ortner

Bernd Ullrich

Marc Hinz

Jens Gebel

Uwe Basel

Jurgen Wenzel

A remaining-stack carrying device ( ) in a sheet feeder ( ) is used in non-stop stack changing. The remaining-stack carrying device ( ) is integrated into the stack feeder ( ) to simplify retrofitting. A remaining-stack lifting gear ( ) uses the lifting elements present in each sheet feeder ( ) for lifting and lowering during stack exchange.

Stack changing device

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).

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.

A guide track for use with a chain drive having roller chains is provided with a plurality of components assembled in end-to-end relation. The transition joints between the individual components are characterized by the component arranged upstream in the running direction of the chain drive having a substantially concave end face and the component arranged downstream in the running direction of the chain drive having a mating substantially concave end face thereby providing a substantially chatter-free junction.

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Rodgau, Germany

Harald Wolski