Heidelberger Druckmaschinen Ag

J&uuml;rgen Maass

Bernhard Roskosch

Bernhard Buck

Martin Riese

Sven Mader

Stefan Maier

Holger Faulhammer

Christopher Berti

Michael Kr&uuml;ger

Matthias N&ouml;ll

Kai Oskar M&uuml;ller

Walter Hofheinz

Thomas Schaeffer

Norbert Th&uuml;nker

Volker M&uuml;ller

Hubert Scheib

A method and device for suppressing vibrations in a printing press includes placing, on at least one element of the press, a mass that vibrates freely with one degree of freedom, determining the rotational speed of the press and feeding the speed to a control device, and, in the control device, utilizing the rotational speed, determining an actuating variable and feeding the actuating variable to at least one actuator, at least one vibration parameter of the mass being changed in accordance with the rotational speed by the actuator.

Method and device for suppressing vibrations in a printing press

A method of driving a machine related to printing technology, wherein movable elements forming a kinematic chain are coupled with one another via at least one gear mechanism, includes infeeding torque components by a respective motor of at least one group of two motors, respectively located at least at two elements associated with one another. The torque components are of equal amplitude but have opposite directions of rotation, for suppressing disruptive oscillations at least at the one group of two motors. The amplitude of the torque components is proportional to relative rotation of the two elements associated with one another. Rotary encoders are provided to obtain signals for reproducing rotational positions of the elements.

Method of driving a machine related to printing technology

A pre-gripper driving device for a pre-gripper cyclically driven oscillatingly and serving for transporting individual sheets in a sheet-processing machine, includes sheet grippers disposed at a free end of a rocking lever pivotable about a pivot pin fixed to a frame, the sheet grippers being movable relative to a gripper support about a gripper shaft aligned parallel to the pivot pin, for closing and opening the sheet grippers, and an activatable and regulatable drive for producing the movement of the grippers, the drive, on one hand, being connected to the sheet grippers and, on the other hand, being supported on one of the rocking lever and the frame; and a printing unit, a digital printing unit, a rotary printing machine and a multicolor rotary printing machine, respectively including the pre-gripper driving device.

Actuator-gripper control

An ink metering system in a printing press is described. The printing press has a roller that is divided into a plurality of ink zones, whereby each of the ink zones has an associated piezoelectrical actuating drive. An ink metering system is characterized by a control device containing the actuating drive and a sensor.

Ink metering system in a printing press with piezoelectric actuating element

Growing community of inventors

Wiesloch, Germany

Jürgen Maass

Growing community of inventors

Wiesloch, Germany

J&uuml;rgen Maass

Jürgen Maass