Man Roland Druckmaschinen Ag

Ditf Deutsche Institute Fur Textil-Und Faserforschung

Manroland Ag

Manroland Sheetfed Gmbh

Toni Ehrhard

Helmut Schild

Georg Hartung

Bernd Lindner

Ulrich Jung

Manfred Herold

Holger Wiese

Klaus-Peter Reichardt

Joachim Blumör

Michael Rother

Helmut Dipl-Ing Schild

The invention relates to a direct drive for a cylinder of a converting machine, in particular a printing press or coating machine that converts sheet-type printed materials. The aim of the invention is to develop a direct drive for a cylinder of the afore-mentioned type in such a way that the required lateral corrections are significantly reduced. To this end, the direct drive includes a rotor () that is detachably mounted on the end of the cylinder () and a stator () that is concentric with the rotor and is detachably fixed to the side frame (). A register motor (), which is fixed to the frame, is coupled to gearing () and this gearing () is coupled to a helical gear or screw drive (), which is in turn coupled to the cylinder () by means of an axial/rotative coupling ().

Direct drive for a cylinder of a converting machine

A method and apparatus for applying a liquid medium to a printing carrier in offset printing machines. It is suitable for processing media of different viscosity, such as low-viscosity dispersion lacquers or higher-viscosity bronze and effect printing inks. In order to guarantee precise metering, two function modules are assigned in an exchangeable manner to a forme cylinder in two bearings. If processing of low-viscosity media is required, the first function module, consisting at least of a metering roller and an applicator roller, is used. For processing higher-viscosity media, the second function module, consisting at least of a screened applicator roller and a chamber-type doctor, is used.

Method and apparatus for applying a liquid medium to a printing carrier

A chamber-type doctor blade apparatus for exchanging or replacing a doctor blade in a running printing press is disclosed. The apparatus includes a housing defining an elongated opening for slidably receiving a receiver carrying a doctor blade. When inserted in the elongated opening, the receiver pivots a sealing doctor blade against its normal bias and out of engagement with an applicator roller of the printing press. When the receiver is removed from the elongated opening the sealing doctor blade pivots back into engagement with the applicator roller thereby preventing printing fluids from exiting the chamber-type doctor blade apparatus through the elongated opening when the receiver is removed. As a result, the doctor blades of the chamber-type doctor blade apparatus can be replaced while the serviced printing machine is running.

Apparatus for exchanging a doctor blade in a rotary printing press

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Breuberg, Germany

Toni Ehrhard