Suction-air control device
AssigneeHeidelberger Druckmaschinen AG
InventorsKarl-Heinz Helmstadter, Raimund Schroder
Life of this patent
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Abstract
A suction-air control device for controlling suction air applied to suction openings of a printing-press cylinder, having controllable valves by which the suction openings are connectable to a suction-air source, and a first pneumatic control device for timed or cyclically feeding the suction air, includes a second pneumatic control device for controlling the suction air in a manner dependent upon the format of the printing substrate, the valves being pneumatically controllable and being disposed on the cylinder.
Claims10
In a suction-air control device for controlling suction air applied to suction openings of a printing-press cylinder receiving printing substrates having various formats, the improvement comprising:
- a suction air source;
- a control air source;
- at least one pneumatically controllable valve disposed on the printing-press cylinder connecting the suction openings of the printing-press cylinder to said suction-air source and having a pneumatically adjustable actuating element connected to said control air source;
- a first pneumatic control device for timed or cyclically feeding the suction air from the suction air source;
- a second pneumatic control device connected to said control air source, to said at least one pneumatically controllable valve and to said pneumatically adjustable actuating element, for controlling said at least one pneumatically controllable valve, for pneumatically adjusting said actuating element with the control air from said control air source, and for controlling the suction air from the suction air source dependent upon the format of the printing substrate.
Dependencies are inferred from the claim text.