Heidelberger Druckmaschinen Ag

Gerhard Gorl

Gerd Raasch

Device for in-line perforation of a continuous web of material in a gap between a pair of cylinders, the web being printed on at least one side thereof, both of the cylinders being held in side walls of a perforating unit and being driven, one of the cylinders carrying elements for perforating the web of material, includes a draw roller for drawing the web of material into the perforating unit, and a separate drive motor associated with the perforating unit and connected with the draw roller and the perforating-cylinder pair for simultaneously driving the draw roller and the perforating-cylinder pair.

Device for in-line perforation of continuous webs of material

A cleaning unit for cleaning ink-carrying surfaces in printing units of rotary printing machines comprises a supply reel carrying a web of washcloth; a take-up reel for receiving washcloth from the supply reel; a drive for driving the take-up reel and a coupling for mechanically coupling the take-up reel with the drive; a pivotable guide element, the guide element deflecting the web of washcloth extending between the supply and take-up reels; and a device for simultaneously pivoting the guide element towards a surface to be cleaned and for transporting a portion of the web of washcloth from the supply reel to the take-up reel.

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Frankenthal, Germany

Gerhard Gorl