Sheet feeding or delivering – Feeding – By means to convey sheet
Patent
1994-05-10
1996-01-02
Bollinger, David H.
Sheet feeding or delivering
Feeding
By means to convey sheet
271277, B65H 502
Patent
active
054801389
ABSTRACT:
Device for sheet-format adjustment of a sheet-transfer drum formed of sheet-holding segments displaceable in guides radially and in a rotational direction of the sheet-transfer drum, and having gripper devices for holding leading and trailing edges of sheets, the gripper devices being adjustable with respect to one another in an outer cylindrical surface of the sheet-transfer drum in the rotational direction thereof, the sheet-holding segments and the gripper devices being simultaneously adjustable for two sheets to be transported, includes guide discs disposed on both sides of the sheet-transfer drum and fixedly connected to a shaft of the sheet-transfer drum, the guide discs being formed with radial guide slots extending parallel to one another, and at least one guide element connected to a sheet-holding segment and being seated in each of the guide slots, and a respective control disc disposed on each side of the sheet-transfer drum and rotatable on the shaft of the sheet-transfer drum, the control disc being associated with the respective guide disc and being connected to at least one cross-member, the at least one guide element being seated in a control slot formed in the control disc, the control slot having a radial guiding component, the gripper devices for holding the sheet trailing edge being disposed on the at least one cross-member, at least one of the control discs being connected to a driving element for rotating the control discs relative to the guide discs on the shaft of the sheet-transfer drum.
REFERENCES:
patent: 4043548 (1977-08-01), Pollich
patent: 4357870 (1982-11-01), Rudolph et al.
Haupenthal Rudi
Lammerzahl Maurice
Bollinger David H.
Greenberg Laurence A.
Heidelberger Druckmaschinen AG
Lerner Herbert L.
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