Heidelberger Druckmaschinen Ag

Michael Kr&uuml;ger

Bernhard Wagensommer

Bernhard Roskosch

Bernhard Buck

Martin Riese

Sven Mader

Stefan Maier

Holger Faulhammer

Christopher Berti

J&uuml;rgen Maass

Matthias N&ouml;ll

Kai Oskar M&uuml;ller

Sven Kerpe

Klaus Hartmann

Hans-J&ouml;rg Laubscher

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 sheet-braking device for a sheet-processing machine includes a plurality of brake modules with a revolving suction belt formed with at least one suction opening. The brake modules have assigned thereto individual drives with controls for stipulating a reference speed relative to a speed of the machine.

Device for braking sheets

A method of operating a lifting sucker which takes sheets off a pile, the sheets being picked up and lifted by suction, which comprises determining at least one of the physical variables characterizing the method and comparing it with an associated desired value, and initiating countermeasures if there are any deviations from the desired value; and a lifting device operated by the method.

Lifting sucker and method of operating a lifting sucker

A printing press drive system includes at least one drive having a motor with an external rotor equipped with permanent magnets, the one drive being assigned to at least one cylinder of the printing press for driving the cylinder, and with a stator provided with windings and firmly fixed to the side panel of the printing press, at least part of the drive system being implemented via a gear train, and the rotor having a gear rim at a perimeter thereof.

Printing press having motor with an external rotor

A sheet transport system for a rotary printing press, including a sheet transport device having a sheet holder, and a first and a second propulsive drive element for propulsively driving the sheet transport device guidingly in a first and a second guide rail, respectively, the second guide rail extending substantially parallel to the first guide rail, the first and the second propulsive drive elements forming rotors of an electric linear drive, the first and the second guide rails having a plurality of drive stations disposed thereon and forming a stator of the linear drive, and a control device assigned to the drive stations for controlling and regulating movement of the first and the second propulsive drive elements, each of the first and second propulsive drive elements being a structure formed of magnetizable material, at least part of which is movable relative to another part thereof, and the drive stations being spaced from one another, at least in some sections of the sheet transport device, a distance which is at most equal to the length of the propulsive drive elements; and a propulsive drive device, a web infeed device and a transport gripper system.

Growing community of inventors

Edingen-Neckarhausen, Germany

Michael Krüger

Growing community of inventors

Edingen-Neckarhausen, Germany

Michael Kr&uuml;ger

Michael Krüger