Heidelberger Druckmaschinen Ag

Hans-Jurgen Kusch

Rudi Stellberger

Walter D'Heureuse

Bernd Ruf

Gerhard Heppenstiel

Bernd Herrmann

Edgar Grundke

Uwe Kleinschmidt

Martin Greive

Paul Nicola

Bernhard Maul

Gunter Zobl

Peter Marten

Volker Bergen

Norbert Benthake

Rudiger Engelmann

Device for guiding a print carrier while the print carrier is respectively fed to and removed from a plate cylinder of a printing press includes a pair of guide elements arranged in parallel with the axis of the plate cylinder, and a setting mechanism for positioning the guide elements, the guide elements being formed, respectively, of at least one segment, one of the guide elements, during feeding of a print carrier to the plate cylinder, and another of the guide elements, during removal of the print carrier, being in engagement with the respective print carrier.

Device for guiding a print carrier

Rubber-blanket cylinder engagement and disengagement device for a rotary printing press having a plate cylinder and an impression cylinder includes swivel arms whereon the rubber-blanket cylinder is journalled, the swivel arms being articulatedly connected to a frame of the rotary printing press, an actuating device for swivelling the swivel arms, and an adjustable stop device disposed at a side of the frame for limiting swivelling motion of the swivel arms so as to bring about a setting thereof in a rubber-blanket cylinder engagement position, the stop device having at least one supporting element formed with a large supporting surface by which the stop device cooperates with the rubber-blanket cylinder.

Rubber-blanket cylinder engagement and disengagement device

Plate-cylinder bearing arrangement for a printing press having a plate cylinder and a rubber-blanket cylinder mounted on respective shafts, the plate cylinder and its shaft being displaceable, and a side-register adjusting device serving for position correction includes two bearing levers extending in a direction towards ends of the blanket-cylinder shaft for maintaining the plate-cylinder shaft in its axial position, the plate-cylinder shaft being connected at each of its ends through the intermediary of self-aligning bearings to one of the bearing levers, respectively, and the bearing levers being connected to a printing-press housing, through the intermediary of spherical-cup bearings, so as to be swivellable in axial direction of the plate cylinder.

Plate-cylinder bearing arrangement

A device for the coupling and uncoupling of a printing unit, said printing unit, with its plate cylinder, being engaged with a blanket cylinder in a first position and being disengaged from said blanket cylinder in a second position. Further, the device can be configured so as to additionally serve for a printing press, having at least two printing units assigned to one blanket cylinder, to be variably operated with optimal results. This is achieved in that the printing unit can be brought into a third position, wherein it is disconnected from the drive. Also contemplated herein is a method for coupling printing stands to one another in a printing press.

Coupling arrangement for coupling printing stands to one another in a

Provided in a printing press having a printing-press housing and an impression cylinder are a numbering box having a numbering-box shaft for holding numbering devices, an inking device with an ink form roller, and a switching or control device, including telescopic rails mounted in the printing-press housing, the numbering box being disposed on the telescopic rails and being displaceable thereon into and out of engagement with the impression cylinder, and a mechanism for simultaneously effecting mutual engagement and disengagement of the inking device and the numbering-box shaft.

Numbering box

The device for supplying printing plates to plate cylinders of printing machines includes elements for holding and for guiding printing plates. The plates can thereby be supplied to at least two different plate cylinders. The plate-holding assembly can thereby be pivoted into at least two different plate changing positions for feeding (and removing) printing printing plates at at least two printing units.

Device for supplying printing plates in a printing machine

Device for holding perforating tools opposite a sheet-carrying cylinder of a rotary printing press includes a bearing and indexing shaft, a carrier body axially displaceably supported by the shaft, the carrier body being formed with a bore extending therethrough axially parallel to the shaft, the carrier body being provided with a clamping device for clamping the carrier body relative to the shaft and with an actuating device for, respectively, effecting a mutual clamping of the shaft and the carrier body and for releasing a mutual clamping of the shaft and the carrier body, the actuating device including rotatably supported rings carried by the carrier body around the shaft, the rings including an eccentric ring provided with a perforating tool.

Device for holding or receiving indexable perforating tools

Device for conveying flexible printing forms away from a printing-form cylinder of a printing press includes a structure defining a conveying plane over which the printing forms are guidable, a conveying device leading away from the printing-form cylinder over a deflecting region adjacent to the conveying plane, and a feeding device cooperatively engaging the conveying device for feeding the printing forms to a repository.

Method and device for conveying flexible printing forms

A device for pivoting flexible printing plates on the plate cylinder of a rotary printing machine comprises clamping rails for mounting and clamping the two plate ends, articulated levers pivot-mounted on the cylinder body and articulatingly connected to the clamping rails so that both clamping rails are adjustable relative to each other such that the printing plate may be cocked on the plate cylinder.

Device for pivotably adjusting flexible printing plates on the plate

A plate cylinder for rotary printing presses, in which the printing plate inside the machine is manufactured digitally, e.g. by spark erosion, and in which the covering with printing foil and the changing of individual segments of the foil following printing is done simply, automatically and with maximum precision inside the machine, with the use of a replaceable cartridge for the printing foil.

Plate cylinder for a printing press having plate material in a cartridge

A device for adjusting the circumferential register at rotary printing machines. At least one pulley engaging in a groove of a grooved cam is fastened to the gearwheel. Via tappets, the grooved cam is guided at the cylinder body so as to be axially displaceable. The groove is obliquely disposed as seen axially, and the grooved cam is axially movable via an adjusting means. A simple adjustment of the circumferential register is permitted, and such adjustment can be effected with great accuracy during machine operation. The drive forces caused by the gearwheel may be transmitted onto the cylinder body largely without play.

Device for adjusting the circumferential register at rotary printing

A sealing device for a dampening unit on an offset printing press having a channel for receiving a dampening-solution supply and defined by a dampening-solution applicator roller and a metering roller which roll on one another, and having a seal holder mountable on a side part of the dampening unit and being in contact engagement with a sealing element, closing off one end of the channel, the sealing element having formed with an overflow opening for excess dampening solution, comprising a drain passage located between the sealing element and the seal holder and formed by a cutout on a side of the sealing element facing away from the channel, the cutout being connected with the overflow opening.

Sealing device

A rubber-covered roller includes a rod core, and a cylindrical covering on the core formed of rubber, the cylindrical covering having respective end faces at which the rubber is in a physical state formed by ultraviolet irradiation which is between a rubber-elastic physical state and a glasslike physical state.

Rubber covered roller in which the physical state of the rubber at the

Dampening unit for an offset printing machine includes a metering roller, a dampening form roller for applying dampening medium to a plate cylinder of the printing machine, the metering roller and the form roller being in mutually pressing engagement at a contact zone along respective axially parallel lines on respective casings of the rollers, a drive for rotating the metering roller and the form rolelr with circumferential speeds which are substantially in a downward direction in vicinity of the contact zone, a storage space for dampening medium located above the contact zone and defined by surfaces of the casings of the metering roller and the form roller and sealing elements located at respective ends of the metering roller and the form roller, and a traversing distributor roller disposed in direct friction contact with the metering roller.

Dampening unit for an offset printing machine

A dampening unit for an offset printing machine, includes a roller pair consisting of a metering roller, and a dampening form roller for applying dampening medium to a plate cylinder of the printing machine, the metering roller and the form roller being in mutually pressing engagement at a first contact zone along respective axially parallel lines on respective casings of the roller pair, a gear drive for driving the roller pair with circumferential speeds of the metering roller and the form roller substantially in a downward direction in vicinity of the contact zone, and means defining a storage space for dampening medium located above the contact zone and including surfaces of the casings of the roller pair and sealing elements located at respective ends of the roller pair, only the metering roller of the roller pair being driven by a gear meshing with a drive gear of the gear drive, the form roller being in driven engagement via friction contact at the first contact zone in a first position of the form roller wherein the form roller is lifted away from the plate cylinder, and being in driven engagement via friction contact both at the first contact zone and at a second contact zone between the form roller and the plate cylinder in a second position of the form roller wherein the form roller is in engagement with the plate cylinder, the metering roller being drivable at a circumferential speed increased to such an extent over that of the plate cylinder to compensate for braking moments applied to the form roller so that the form roller rotates in the second position thereof with a circumferential speed slower by an order of magnitude of 0.5% to 2% than the circumferential speed of the plate cylinder.

Growing community of inventors

Neckargemund, Germany

Hans-Jurgen Kusch