Heidelberger Druckmaschinen Ag

Holger Edinger

Burkhard Wolf

Rolf Kündgen

Rudolf Hutzenlaub

Thomas Bechberger

Jürgen Zeltner

Klaus Lulay

Juergen Zeltner

Hermann Karl Buck

A method and an apparatus for laterally aligning a sheet in a processing machine, in particular a printing machine, carries out lateral sheet alignment on a cylinder of the printing machine, e.g. a feed cylinder. In order to achieve large correction distances in relation to a possible lateral movement capability of a gripper bar, the latter is prealigned prior to correction in such a way that, in the event of deviation from predetermined desired values, it is prealigned laterally to defined positions. A sheet-fed rotary printing machine having the apparatus, is also provided.

Method and apparatus for laterally aligning a sheet in a processing machine and sheet-fed printing machine having the apparatus

A method for feeding sheets to a printing technology machine improves reliability of feeding sheets and reduces an acceleration time from a base speed to a production speed. The sheets are conveyed onto a feed table in shingled formation by a first drive and are individually and successively conveyed from the feed table to a first processing station of the machine by a second drive. The sheets are conveyed onto the feed table before an acceleration of the second drive to production speed is completed and the first drive is accelerated to the production speed when the processing station has reached the production speed.

Method for feeding sheets to a printing technology machine

In a method and an apparatus for guiding sheets to a sheet processing machines, provision is made to reduce the adhesion forces between sheets following one another by the trailing edge of the respective first sheet of a sheet stream being lifted. The sheet is lifted using a blowing/suction nozzle or a suction nozzle.

Method and apparatus for guiding sheets to a sheet processing machine, in particular a printing press

A device for controlling blast and/or suction air in a sheet processing machine, especially a printing press, includes a rotary valve for making ready different positive and negative pressure levels during a work cycle. The rotary valve is connected as a bypass parallel to a supply line between a consumer or load and a positive and negative pressure source. The rotary valve is connected at an input side thereof with the ambient air.

Device for cycling blast or suction air in a sheet processing machine

A device for transporting sheets to a sheet processing machine includes a feed table, and at least one suction belt endlessly revolvable over the feed table. The suction belt is subjectible to vacuum from suction regions of different pressure levels disposed behind one another in a direction of sheet transport and the suction regions are producible by a single vacuum source. The suction belt is formed with through openings, and the feed table is formed with suction openings and ventilation openings, both of which correspond with the through openings formed in the suction belt.

Sheet-transporting device having a suction belt module with a blower

A conveying apparatus for transporting sheets to a sheet processing machine, in particular a printing press, has a suction belt table between a sheet in-feed and the sheet-processing machine. A transport belt of the suction belt table is formed with at least two rows of suction openings that exert a holding force on the sheet. Ventilation openings that reduce a frictional force of the suction belt on the feed table are provided below the transport belt in a region between the rows of suction openings.

Apparatus for the transport of sheets

A device for transporting sheets in a region of a selectively usable sheet pile feeder includes a crosscutter of a sheet-fed processing machine having conveyor belts and contact-pressure devices cooperating therewith for feeding the sheets from the crosscutter, and a separating device of the sheet pile feeder, whereon contact-pressure devices are disposed.

Crosscutter

A method and apparatus for feeding printing plates to a tensioning device of a plate cylinder of a printing press includes subjecting a front region of a printing plate to flexion to orient a leading edge of the printing plate essentially parallel to tensioning surfaces of a leading-edge tensioner for insertion into the leading-edge tensioner, and inserting the printing plate into the leading-edge tensioner and attaching the printing plate at the plate cylinder.

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Weinheim, Germany

Holger Edinger