Heidelberger Druckmaschinen Ag

Matthias Herden

Bernhard Wagensommer

Holger Faulhammer

Eckehard Sommer

Andreas Mallok

Ralf Würdinger

A sheet transport apparatus in a sheet processing machine has at least one driven transport belt for the transport of sheet printing materials from a first location to a second location. It being possible for the transport belt to be driven at different transport speeds. The acceptance of the sheet printing materials at the first location is carried out at a relatively low transport speed, and the transfer of the sheet printing materials at the second location is carried out at a relatively high transport speed.

Non-integer overlap feeder for machines processing printing materials

A method is provided for synchronizing drive combinations having a plurality of drives for machines. The drives include at least one master drive and a plurality of slave drives assigned to the master drive. A central control unit is provided, as well as controls for each of the drives, including data processing and storage equipment. The slave drives are synchronized with respect to at least one of rotational speed and angular setting as prescribed by the master drive. The steps of the method, depending upon operating values of the master drive, include determining at least one synchronization function for each of the slave drives, determining master-synchronous operating values for each operating time for the respective slave drive with the synchronization function, and prescribing the determined operating values for the respective drive. A device for performing the method is also provided.

Method and device for synchronizing drive combinations

A printing press has a ductor inking unit that includes a ductor roller and a motor for moving the ductor roller via a rotatable cam disc, the motor being constructed so as to subject the cam disc to periodic angular acceleration at constant printing speed of the printing press, and so as to rotate the cam disc alternatingly in opposite rotational directions; and a method of operating the printing press.

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Mannheim, Germany

Matthias Herden