Swivelable cylinder driven by an electric individual drive

Details Swivelable cylinder driven by an electric individual drive Swivelable cylinder driven by an electric individual drive

B - Operations, Transporting

41

F

B41F 13/38 (2006.01) B41F 3/56 (2006.01) B41F 13/004 (2006.01) B41F 33/00 (2006.01)

Patent

CA 2237424

A cylinder for a printing press is adjusted away from a printing stock web or an adjacent cylinder by rotation of an eccentric element. The change in position caused by the movement of the eccentric element is compensated by an additional rotating movement superposed on the rotating movement of the cylinder such that the outer surface of the cylinder has no relative velocity relative to the adjacent cylinder or the printing stock web. Compensation is carried out by a regulating circuit to which is supplied the actual rotational angle of the cylinder with respect to the eccentric element and the actual rotational angle of the eccentric element with respect to the side wall or an angular function derived therefrom.

Un cylindre de presse à imprimer est éloigné de la bande de papier du tirage ou d'un cylindre adjacent par rotation d'un excentrique. Le changement de position du cylindre est causé par le fait que le mouvement de l'excentrique est compensé par un mouvement de rotation additionnel superposé au mouvement de rotation du cylindre, de telle sorte que la surface extérieure du cylindre n'a pas de vélocité relative par rapport au cylindre adjacent ou à la bande de papier du tirage. La compensation est réalisée par un circuit de régulation suite à la transmission de l'angle de rotation réel du cylindre par rapport à l'excentrique et à l'angle de rotation réel de l'excentrique par rapport à la paroi latérale ou à une fonction angulaire dérivée de celle-ci.

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