Heidelberger Druckmaschinen Ag

Eric Knopf

Bernhard Buck

Malte Seidler

Stefan Schreiber

Matthias Nöll

Uwe Tessmann

Detlef Strunk

Detleff Strunk

In a method for compensating an oscillation which has a frequency spectrum with a number of discrete frequency components in a printing press, at least one counter torque is introduced into the printing press in order to compensate for at least one discrete frequency component of the oscillation. A first group of one or more frequency components are compensated for by introducing one or more previously determined counter torques, and a second group of one or more frequency components is compensated for by introducing specific counter torques as a function of a measurement, carried out during the operation of the printing press, of at least one signal which contains at least the one or the plurality of frequency components.

Method for compensating for an oscillation in a printing press

An imaging device for setting an image on a printing form by at least one imaging energy source, includes a device for determining a component of a relative movement between the imaging energy source and the printing form whereon an image is to be set. An actuator device moves the imaging energy source in such a manner that undesired components of the relative movement between the imaging energy source and the printing form are reduced. An imaging module may be formed of at least two of the imaging devices. A printing press includes the imaging device or the imaging module. A method sets an image on a printing form.

Image setting device, module and printing press for relative motion compensation of image setting device and printing form

For the active compensation of oscillations in a machine which processes printing material, a signal which contains an oscillation of the machine or of a part of the machine is measured and at least one counter torque is introduced into the machine to reduce the oscillation. At least one measure for a ratio between the amplitude of the uncompensated oscillation and the amplitude of the counter torque necessary for complete compensation is compared with a threshold value. The counter torque is determined in a first functional relationship with the oscillation if the measure is greater than the threshold value, and the counter torque is determined in a second functional relationship with the oscillation, if the measure is smaller than the threshold value. In the machine, a regulating device is operated in a first or second operating mode in dependence on the measure of the ratio.

Method for active compensation of oscillations in a machine which processes printing material, and a machine which processes printing material

A method for controlling a drive () of a first subsystem of a printing press () which is mechanically decoupled from a second subsystem of the printing press (). In the method, a motion sequence is determined for the second subsystem in advance, the motion sequence being used as a reference curve for controlling the drive () of the first subsystem.

Growing community of inventors

Heidelberg, Germany

Eric Knopf