Heidelberger Druckmaschinen Ag

Werner Weber

Willi Jeschke

Rudi Junghans

Martin Mayer

Eckart Frankenberger

Norbert Thunker

Markus Gerstenberger

Ludwig Becker

The clamping device is used to adjust at least one register element in a printing machine. The device has an upper clamping rail, to which the register element is fixed. The upper clamping rail can be moved in a guide and fixed in position in order to adjust the register element.

Device for adjusting at least one register element in a printing machine, and corresponding method

A device for tensioning printing formes (or 'printing plates') on a forme (or 'plate') cylinder of a rotary printing machine, including a stretching shaft extending through a gap formed in the cylinder, the stretching shaft holding receiving elements and, opposite thereof, clamping surfaces gripping the trailing end of a printing plate, with individual tensioning elements being mounted side by side on the stretching shaft, and the stretching shaft being stretchable, via adjusting elements, linearly in axial direction in order to optimally tension the trailing end of the printing plate independently of a possible stretching of the printing plate.

Apparatus for tensioning printing plates on a cylinder of a rotary

A positioning device for a rubber-blanket cylinder which is supported in double-excentric bearing rings allows a positional adjustment of the rubber-blanket cylinder relative to a plate cylinder and a printing substrate supported on an impression cylinder. The plate cylinder and the impression cylinder have stationary axes of rotation relative to the frame of the printing unit. A printing gap is adjusted by the positioning device to varying printing substrate thickness, and in one terminal position, the rubber-blanket cylinder is fully disengaged from the other cylinders. The rubber-blanket cylinder is shifted along a positioning path with one segment following an arc of a circle which is concentric with the plate cylinder. The parameters of the bearing and the adjusting devices are defined such that the positioning path is traversed while the respective inner and outer bearing rings rotate continuously.

Positioning device for a rubber-blanket cylinder

Clamping device for fastening a flexible printing form on a jacket surface of a cylinder includes a structure defining a groove formed in and across a jacket surface of a cylinder for receiving a leading end of a printing form therein, a structure defining a cylinder gap formed axially parallel in the jacket surface of the cylinder for receiving therein a trailing end of the printing form bent with an obtuse angle, a turnable clamping shaft disposed axially parallel in the cylinder and having at least one resilient element fastened thereto, the one resilient element being movable with respect to the trailing end of the printing form, the structure defining the cylinder gap including a leading lateral surface formed in the cylinder and provided with an edge engageable by the trailing end of the printing form, the one resilient element having two legs, one of which, in an unclamped condition of the clamping device, extends freely into the gap.

Clamping device for fastening a flexible printing form on a jacket

The invention relates to a print unit cylinder for rotary presses, the cylinder having a narrow non-printing gap for accommodating the rubber blanket or pressplate ends, the gap running parallel to the axis of the cylinder, and also an elastomeric filler element for bridging the non-printing gap opening to thus prevent a sudden change of the roll characteristic when two interacting cylinders roll over the cylinder gaps.

Print unit cylinder for rotary presses

The invention relates to a printing unit cylinder for a rotary printing machine comprising a gap strip arranged in a cylinder gap of said printing unit cylinder, said gap strip being supported on the bottom of said cylinder gap, being removably fastened via a fastening means and being of resilient design in order to achieve a reliable vibration absorption in the area of the cylinder gaps.

Printing unit cylinder for a rotary printing machine

Drive system having drive means for axially reciprocating a distributor roller of an inking unit which, in addition to the distributor roller, includes other ink rollers, including additional drive means for superimposing an additional oscillatory movement of the distributor roller in axial direction in the form of a shorter stroke upon a longer stroke effected with the axial reciprocation of the distributor roller by the first mentioned drive means.

Drive system with drive means for axial reciprocation of distributor

An ink duct for a printing press having an ink knife forming a bottom part thereof which is adjustably movable relative to an ink-duct roller, respective ink-duct jaws being disposed at opposite sides of the ink knife and defining therewith and with the ink-duct roller an inner space for receiving a supply of ink therein includes a sealing surface formed on the ink-duct jaws for sealing the ink-duct jaws with the cylindrical surface of the ink-duct roller, the sealing surface being a surface in contact with the cylindrical surface of the ink-duct roller and having a width equal to part of the width of the respective ink-duct jaw, the contact surface having a spiral construction with respect to the ink-duct jaw so that a trailing end of the contact surface, as viewed in rotary direction of the ink-duct roller, faces towards the inner space of the ink duct.

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Sandhausen, Germany

Werner Weber