Turning or reversing device with a storage device for flat or sheet-like material
AssigneeHeidelberger Druckmaschinen AG
InventorGünther Stephan
Life of this patent
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Abstract
Provided, in combination, is a device for turning sheet-like material, with an impression cylinder for guiding the sheet-like material, the impression cylinder being preceded by a first transfer cylinder and followed by a second transfer cylinder, the sheet-like material being receivable on an outer jacket surface of the impression cylinder so as to be printable by a third transfer cylinder, and further included are a storage device, and a device for imparting a deformation in the sheet-like material during entry thereof into the storage device and while the sheet-like material is gripped at an edge thereof; and a printing unit and a multicolor rotary printing machine, respectively, provided with the combination.
Claims1
A method for storing a sheet-shaped material during a turning process, which comprises:
- storing the sheet-shaped material on an impression cylinder connected with an upstream transfer cylinder and a downstream transfer cylinder, for printing the sheet-shaped material with a transmission cylinder;
- guiding the sheet-shaped material, in a wedge-shaped region formed between the impression cylinder and the upstream transfer cylinder, by a storage device;
- holding a leading edge of the sheet-shaped material by a gripping device of the impression cylinder and a trailing edge of the sheet-shaped material by a gripping device of the downstream transfer cylinder;
- releasing the leading edge of the sheet-shaped material by the gripping device of the impression cylinder;
- and
- exerting external forces on the sheet-shaped material forming an additional bending in the sheet-shaped material.
Dependencies are inferred from the claim text.