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US 8,006,975 B2Granted
Method and apparatus for conveying a sheet back into the overlapping stream in the event of a machine stop
AssigneeHeidelberger Druckmaschinen AG
InventorsAndreas Müller, Burkhard Wolf
Life of this patent
Estimating the term…
Abstract
A method and an apparatus are provided to convey and align sheets being fed to a processing machine. In the event of a machine “stop,” a sheet, which has been separated from an overlapping stream, is conveyed back into the overlapping stream by raising the rear sheet edge with a mechanical or pneumatic device.
Claims6
An apparatus for conveying sheets to a processing machine having a feeder with a transport station for overlapping transport of sheets, the apparatus comprising:
- an aligning and accelerating station is disposed downstream of the transport station;
- a pneumatically or mechanically acting raising apparatus, disposed between the transport station and said aligning and accelerating station, for a rear edge of the sheets;
- and
- a transport device controlled to move in reverse while said raising apparatus is actuated.
1 more element
A method for conveying sheets to a processing machine, the method comprising the following steps:
- conveying the sheets in a feeder in an overlapping stream;
- separating sheets out of the overlapping stream and feeding the separated sheets to an aligning and accelerating station disposed in a feed plane;
- stopping the feeder;
- and
- while the feeder is stopped, conveying a sheet back onto the overlapping stream by raising up a rear sheet edge of the sheet while conveying the sheet backward;
- and
- after the sheet has been conveyed back onto the overlapping stream, restarting the feeder and conveying the sheet to the aligning and accelerating station.
4 more elements
Dependencies are inferred from the claim text.