Heidelberger Druckmaschinen Ag

Manfred Gang

Erich Michael Zahn

Bernd Ruf

Reiner Pfister

A guard for contrarotatable cylinders of a printing press includes a finger protective element disposable adjacent cylindrical surfaces of the cylinder for guarding a nip between the cylinders in vicinity of a danger zone, the finger protective element being in fixed position and having at least one switch sensor disposed in the region of the cylinder nip.

Guard on contrarotatable cylinders of a printing press

A safety device on a printing press, including at least one switch, a mechanical protective device changeable in position for operating the switch, the switch being fastened to a frame of the printing press so as to be adjustable in position and releasable from the frame, and connecting elements by the aid of which the switch is firmly seated on a base plate and held immovably on the frame, includes an intermediate plate formed of a relatively soft material disposed between respective fastening surfaces of the base plate and the frame, the intermediate plate being secured in position against movement in a direction parallel to the fastening surfaces, the fastening surface of the base plate having at least one projection formed of a material relatively harder than the relatively soft material of the intermediate plate, the projection being pressable into the relatively soft material of the intermediate plate by holding forces exerted by the connecting elements perpendicularly to the respective fastening surfaces of the base plate and the frame.

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Oberhausen/Rheinhausen, Germany

Manfred Gang