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US 8,132,805 B2Granted
Method and apparatus for feeding sheets to a processing machine
AssigneeHeidelberger Druckmaschinen AG
InventorsAndreas Müller, Burkhard Wolf
Life of this patent
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Abstract
In a method and an apparatus for feeding sheets to a processing machine, in particular a printing press, provision is made for the sheet to be accelerated to processing speed by use of at least two acceleration stations arranged one after the other. One of the acceleration stations is arranged such that the acceleration station can be displaced in order to align the sheet.
Claims7
A method for feeding sheets to a sheet-processing machine, which comprises the steps of:
- feeding the sheets in an overlapping formation on a feed table to a first acceleration station and the sheets being accelerated by the first acceleration station;
- providing a skewed position correction to the sheets by the first acceleration station as the sheets are accelerated;
- feeding the sheets to at least one second acceleration station and the sheets being accelerated by the at least one second acceleration station to a machine speed of the sheet-processing machine, before the sheets are fed to sheet gripper devices of a feed cylinder of the sheet-processing machine;
- and
- feeding the sheets via a transport device that is driven continuously at a cycle rate of the sheet-processing machine to the gripper devices of the feed cylinder of the sheet-processing machine, after the sheets have been accelerated to the machine speed.
2 more elements
An apparatus for feeding sheets to a sheet-processing machine, the apparatus comprising:
- a feed table on which the sheets are transported in overlapping formation;
- a first acceleration station for a sheet, said first acceleration station disposed in said feed table, said first acceleration station being adjustably mounted to said feed table for sheet alignment;
- at least one second acceleration station for the sheet disposed downstream of said first acceleration station;
- and
- a transport device for being driven at a cycle rate of the sheet-processing machine, said transport device being disposed downstream of said first and at least one second acceleration stations.
2 more elements
Dependencies are inferred from the claim text.