Sheet feeding or delivering – Delivering – With transfer means between conveyor and receiver
Patent
1994-04-14
1995-08-29
Skaggs, H. Grant
Sheet feeding or delivering
Delivering
With transfer means between conveyor and receiver
271204, 271211, B65H 2954
Patent
active
054453720
ABSTRACT:
Device for depositing printed sheets on a sheet pile, including at least one pair of mechanical grippers for seizing the printed sheets at a respective leading edge thereof, the gripper pair being movable over the sheet pile and being controllable for releasing the printed sheets at a given instant of time, a pneumatic device for applying varying pressure to defined regions over a depositing surface of the respective printed sheets for decelerating and transporting the sheets against a mechanical stop, and adjusting elements for the grippers and the pneumatic device, also includes a control device including a computer and having an input and an output, the control device being connected via the output thereof to the adjusting elements, an input device for receiving sheet-specific and process-specific data being connected to the control device via the input thereof, the sheet-specific and process-specific data including data regarding two-dimensional mass distribution of the respective printed sheet, the adjusting elements of the pneumatic device being controllable by the control device so as to produce a pressure distribution on the depositing surface of the respective printed sheet which is correlated with the mass distribution of the respective printed sheet.
REFERENCES:
patent: 3556519 (1971-01-01), Keller
patent: 4083556 (1978-04-01), Schilling et al.
patent: 4317563 (1982-03-01), Zimmerman et al.
patent: 4643414 (1987-02-01), Weisgerber
patent: 4702468 (1987-10-01), Pollich
patent: 5251891 (1993-10-01), Blaser et al.
patent: 5259608 (1993-11-01), Pollich
Blaser Peter T.
Hauck Dieter
Miltner Karl-Hermann
Greenberg Laurence A.
Heidelberger Druckmaschinen AG
Lerner Herbert L.
Skaggs H. Grant
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