Man Roland Druckmaschinen Ag

Man Roland Druckmaschinen

Marc Hinz

Peter Hummel

Robert Ortner

Valentin Gensheimer

Albrecht Volz

Joachim Blumor

Achim Stoffler

Jurgen Wenzel

Harald Wolski

Bernd Ullrich

Hubert Zschetzsche

Jens Gebel

Manfred Straub

Uwe Basel

Edgar Werber

In a stack changing device, on a sheet feeder the remaining stack bars ( A, B) are pulled from the stack area, out-of-line in relation to each other. For improved stack joining, the inner remaining stack bars ( A, B) are each pulled more slowly than the outer remaining stack bars ( A, B).

Stack changing device

In a non-stop stack changing device, remaining-stack bars are pulled from the stack area one by one and out-of-line in relation to each other. To this end, a pull/push drive is provided, which makes it possible to push the remaining-stack bars simultaneously into the grooves of a pallet carrying a sheet stack. Furthermore, the pull/push drive makes it possible to pull the remaining-stack bars in pairs from inside outwards out of the stack area. In addition, the remaining-stack bars can be pulled in a first and second sequence in accordance with this model. An individual motor drive is provided for this purpose, which operates interlockingly on each individual remaining-stack bar.

An undershot inking unit and associated method are disclosed. The undershot inking unit includes an ink fountain roller that is controlled independently of the printing speed of the printing machine, and in which the rotational contact angle of the distributor roller on the ink fountain roller is varied according to the printing unit speed. The method comprises controlling the rotational speed of the ink fountain roller independently of the printing speed of the printing machine; and varying the rotational contact angle of the intermittent ductor roller on the ink fountain roller according to the printing speed of the printing machine. In a preferred embodiment, the apparatus includes two coaxial cams rotatably adjustable with respect to each other. Each cam includes a predominant circumferential contour and a subordinate circumferential contour. By adjusting the relative rotational position of the cams, the rotational contact angle of the ductor roller on the ink foundation roller is varied according to the printing unit speed.

Method and apparatus for regulating ink distribution in an undershot

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Rodenbach, Germany

Marc Hinz