Sheet delivery at a printing machine
AssigneeHeidelberger Druckmaschinen AG
InventorGerhard Pollich
Life of this patent
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Abstract
Sheet delivery apparatus at a printing machine. The sheet delivery apparatus comprises a chain conveying system for conveying printed sheets to a delivery pile and a suction roller for decelerating the sheets before being deposited on the pile. A suction chamber, positioned below the chain-conveying system, extends over the width of the sheets and up to the suction roller. In the region of the upper sheet layers of the delivery pile, suction boxes are disposed at four lateral pile surfaces.
Claims20
Sheet delivery apparatus of a printing machine, the printing machine comprising at least one printing unit and a sheet delivery area, the sheet delivery area being configured for receiving sheets delivered thereto and piling the sheets atop one another, the sheet delivery area having an upper portion and, at the upper portion, four lateral side areas corresponding to four lateral sides of delivered sheets, said apparatus comprising:
- means for conveying sheets to the sheet delivery area, said conveying means extending between the printing unit and the sheet delivery area and being configured for transporting sheets from the at least one printing unit to the sheet delivery area;
- means for guiding the sheets during the transport of the sheets between the printing unit and the sheet delivery area;
- blower means disposed above the sheet delivery area for blowing air downwardly onto sheets being delivered;
- a plurality of suction means being mounted at the sheet delivery area for providing suction at the upper portion of the sheet delivery area;
- and
- said plurality of suction means comprising four suction means, each of said four suction means being configured for providing suction at a corresponding one of the four lateral side areas of the upper portion of the sheet delivery area.
Dependencies are inferred from the claim text.