Bosch Rexroth Ag

Rexroth Indramat Gmbh

Dieter Staub

Klaus Peters

Thomas Gabler

Karin Steudel

A web offset printing press that prints and processes at least one material web and has printing units and/or printing unit assemblies, at least one folder, and transport elements operates by transporting the at least one material web by the transport elements through a web of the printing press into the at least one folder, electrically driving the at least one folder, the printing units and/or printing unit assemblies and the transport elements at least partially mechanically independently of each other, and synchronizing during printing operation via specified setpoints values of at least one master axis with an electronically generated synchronization clock, and starting from a initial state of the at least one folder in which the master axis and/or condition of motion of the folder are independent of each other, adapting by the at least one folder its initial state to or synchronizing by the at least one folder its initial state with setpoint value assignments of the master axis, by performing compensating motions.

Web offset printing press and method for operating a web offset printing press

In a method for operating machines () with a plurality of shafts (), in which the shafts () are each driven, synchronized with one another, by individual drive mechanisms () belonging to them, in accordance with an electronic, chronological guide shaft function, which corresponds to an instantaneous position of a guide shaft L, and the motions of a plurality of derived shafts () are derived from the guide shaft L in accordance with conversion functions that correspond to respective predetermined mechanical conversions () with respect to the guide shaft L, it is proposed, in order to improve the method in such a way that&#x2014;particularly when there is a large number of shafts to be regulated&#x2014;simple startup at comparatively little expense for equipment is permitted, that all the shafts () of at least one group () of shafts, which correspond to one another in terms of the conversion (), obey an electronic, chronological following guide shaft function, which corresponds to an instantaneous position of a following guide shaft F and is formed by linking the applicable conversion function and the guide shaft function.

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Rechtenbach, Germany

Dieter Staub