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US 6,547,512 B1Granted
Stack changing device
AssigneeMAN Roland Druckmaschinen AG
InventorsPeter Hummel, Robert Ortner, Bernd Ullrich, Harald Wolski
Life of this patent
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Abstract
A remaining-stack carrying device (3) in a sheet feeder (2) is used in non-stop stack changing. The remaining-stack carrying device (3) is integrated into the stack feeder (2) to simplify retrofitting. A remaining-stack lifting gear (5) uses the lifting elements present in each sheet feeder (2) for lifting and lowering during stack exchange.
Claims9
A device for changing a sheet stack in a sheet feeder of a sheet-processing machine, the device comprising:
- a main stack lifting mechanism for raising and lowering of a sheet stack,
- a remaining-stack carrying device including remaining-stack bars for temporarily receiving a remaining stack and transferring said remaining stack to a newly fed-in sheet stack,
- a drive mechanism for slidably moving the remaining-stackbars longitudinally into a stack position in staggered relation to one another and retracting the remaining-stack bars from the stacking position in staggered relation to one another, and
- a remaining-stack lifting mechanism for raising the remaining-stack carrying device,
- wherein the remaining-stack carrying device includes a first portion connected to the remaining-stack lifting mechanism and a second portion that carries the remaining-stack bars, the first and second portions of the carrying device being guided on vertical guide rails mounted on the sheet feeder with the first portion of the carrying device being arranged inside the sheet feeder and the second portion of the carrying device being arranged outside of the sheet feeder.
2 more elements
Dependencies are inferred from the claim text.