Heidelberger Druckmaschinen Ag

Heidelberger Druckmaschinen

Peter Heiler

Martin Mayer

Dieter Schaffrath

Frank Schaum

Frank Kropp

Jens Friedrichs

Burkhard Maass

Rudi Stellberger

Gerd Merkel

Jens Hieronymus

Bernhard Schwaab

Rolf Kuendgen

Jurgen Rautert

J&uuml;rgen Rothaug

Michael Postels

Michael Münster

Uwe Dengel

Stefan Otto Dopke, Deceased

Arno Kern

Michael Ruck

Michael Dischinger

Joachim Huber

By Katrin Ewert, Heir

Burkhard Maaß

In a method for controlling a distributor roller of a printing press, the phase position of at least one reversal point of the distributor roller is changed automatically during the ongoing printing. A change is made to the phase position for every specified number of revolutions of a plate cylinder.

Method for controlling a distributor roller control system

A method for setting up printing presses includes providing cylinders, a drive for at least one cylinder, a register adjustment device for at least one cylinder and at least one control unit. During set-up operations on the printing press, the control unit actuates the register adjustment device while the printing press is being accelerated or decelerated or while washing operations in the printing press are being carried out and while a production run is switched off and cylinders are rotating. A printing press carrying out the method is also provided.

Method for register adjustment during set-up processes in printing presses and printing press carrying out the method

A method for operating a printing unit of a printing press includes operating the printing unit in a first operating mode, for example printing operation, and in a second operating mode, for example maintenance operation. In the first operating mode, a printing unit cylinder and a distributor roller are driven rotationally by a first motor and the distributor roller is driven axially by a second motor. In the second operating mode, the distributor roller is driven rotationally by a third motor and the distributor roller is driven axially by the second motor. A printing press for carrying out the method is also provided.

Printing press and method for operating a printing unit of a printing press

A method for roller adjustment in a printing press includes providing a first roller, a second roller and a third roller. The second roller bears both against the first roller and against the third roller and is oriented in an axially nonparallel manner relative to the third roller. The first roller is displaced into a position in which the first roller is oriented in an axially nonparallel manner relative to the third roller. A dampening unit for carrying out the method is also provided.

Method for roller adjustment in a printing press and dampening unit of a printing press

A device for selectively positioning at least one cylinder in a printing machine, the cylinder being rotatably mounted in a carrier and, together with the carrier, forming a unit that is adjustable into different positions, includes a guide, and a drive for adjusting one of the unit and the carrier, respectively, along a first direction of motion and placing it on the guide for guidingly adjusting it along a second direction of motion.

Positioning device in a printing machine

A dampening unit for a printing press contains a first roller and a second roller that together form a slip gap. The dampening unit is distinguished in that a pivot axis, about which the first roller is pivotably supported against the second roller, extends through a center axis of the first roller and substantially parallel to a tangential line that is located on a line L which extends through the slip gap.

Dampening unit for a printing press

A device for positioning and tensioning a cylinder dressing on a printing-machine cylinder, wherein both a leading dressing end and a trailing dressing end of the cylinder dressing are tensioned, includes, in a first step, tensioning both dressing ends, and in a second step, relieving the tension in a first of the two dressing ends, while retensioning a second of the dressing ends; and a printing machine provided with the device.

Device for tensioning a cylinder dressing on a printing machine-cylinder

A device for ensuring correct tooth engagement during coupling of an adjustable, first gearwheel to a second gearwheel of a printing-material processing machine, includes a first adjustment device for adjusting the first gearwheel in a direction towards the second gearwheel during coupling, and further includes a protrusion and a guide for guiding the protrusion during the coupling, the protrusion being disposed eccentrically to one of the two gearwheels and being connected to the one gearwheel, so that, during rotation of the one gearwheel about a central axis thereof, the protrusion is rotatable together with the one gearwheel.

Device for ensuring correct tooth engagement during coupling of two gearwheels

A dampening unit of a planographic printing machine has a pan roller, a transfer roller, and a dampening unit roller. The transfer roller is held in bearing contact against the dampening unit roller with a regulating force such as, in particular, a spring force F . The transfer roller, together with the pan roller, is pivotable about a pivot axis that is offset relative to the roller axis of the pan roller, and/or the pivot axis lies essentially on a tangential line running through a circumferential contact point which is formed by the transfer roller together with the dampening unit roller.

Dampening unit of a planographic printing machine

A clamping device for firmly clamping a cylinder packing or covering on a printing machine cylinder, the clamping device having a clamping seat, a clamping jaw cooperating therewith, and an eccentric shaft, includes a support wherein the eccentric shaft and the clamping jaw are jointly mounted, the support being adjustable alternatively into a first support position and into a second support position relative to the clamping seat; and a printing machine having at least one clamping device with the foregoing construction.

Printing machine cylinder and clamping device for firmly clamping a cylinder packing

A transfer drum in a sheet-fed printing press having a support surface formed at least segmentally of individual punctiform support elements disposed on the circumference of the transfer drum includes another support surface disposed at least segmentally on the circumference of the transfer drum, the other support surface being continuous, both of the support surfaces being mutually interchangeable.

Transfer drum in a sheet-processing printing press

An inking unit for a rotary printing press with inking rollers, at least one of which has a hard outer cylindrical surface, including a device having nozzles for applying fresh cleaning fluid onto the respective inking rollers and a device for squeegeeing cleaning fluid soiled with ink residues from the roller of the inking unit having the hard outer cylindrical surface, further includes a drip pan disposed beneath the nozzles and formed with a drain having a discharge end, the squeegeeing device being a doctor blade device and having assigned thereto a collection vessel wherein the drain discharge end terminates, the collection vessel being periodically removable from the printing press for emptying therefrom the collected cleaning fluid soiled with ink residues, and a follow-up trough assigned to the drain discharge end, the follow-up trough being swingable beneath the discharge end when the collection vessel is removed from the printing press.

Inking unit for a rotary printing press

Device suitable for removing test sheets from sheet-fed printing presses includes leading-edge stops for a downwardly directed sheet stream, the stops being pivotable by a stop lever, and catch arms articulatedly connected to catch levers, the catch arms being adjustable by a tilt lever from outside the sheet stream into a catch position therewithin, as well as a spring engaging with the stop lever, the leading-edge stops being pivotable against the action of the spring out of a stop position and into a release position after the catch arms have reached the catch position thereof. This follow-up control is realized by a linearly adjustable adjusting member with a cam and a sliding block which is maintained in continuous engagement in a slot or coulisse formed in the tilt lever, while the cam is maintained in alternating operating connection with the stop lever and a spring leg of the spring which is formed as a leg spring.

Device for forming a sheet pile

Device for extemporaneously raising a transport roller in a feeder of a sheet processing machine, wherein the transport roller is swivelably arranged on a shaft supported crosswise in a frame of the machine above a feed table, so as to execute stroking movements in synchronism with the machine and be liftable from the feed table extemporaneously by a swiveling motion of the shaft, includes an entrainer disposed on the shaft, and an adjusting member formed with a coulisse, the entrainer engaging in the coulisse with a rotary angle clearance at least equivalent to the stroking movements in synchronism with the machine, the adjusting member being swivelable, out of a stop position and counter to a spring bias, about the shaft axis and through a rotary angle greater than the rotary angle clearance.

Device for extemporaneously raising a transport roller in a feeder of a

A printing press has at least one printing stand with a plate cylinder, an inking unit for providing ink to the plate cylinder, a blanket cylinder, an impression cylinder, a sheet feed device for feeding printing stock into the print stand, and a dampening unit for feeding dampening medium to the printing plate of the plate cylinder. The dampening unit has at least one form roller engageable with the plate cylinder, a dipping roller dipping into dampening medium contained in a dampening-medium tank, at least one intermediate roller provided between the form roller and dipping roller, adjusting means through which the form roller is engageable with the plate cylinder and the intermediate roller with the form roller and the dipping roller, and a device for preventing any permanent deformation on the elastic outer cylindrical surface when the printing press is at a standstill.

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Forst, Germany

Peter Heiler