Apparatus for supporting a cylinder in a rotary printing unit

Details Apparatus for supporting a cylinder in a rotary printing unit Apparatus for supporting a cylinder in a rotary printing unit

B - Operations, Transporting

41

F

B41F 7/04 (2006.01) B41F 13/20 (2006.01)

Patent

CA 2099353

A rotary printing press comprises a frame including spaced sidewalls (12, 14), first and second printing cylinders (16, 18), and bearing members (26, 28) for supporting the ends (20, 22) of the first and second printing cylinders (16, 18) for rotation in the sidewalls (12, 14) of the frame. The first and second bearing members (26, 28) are removable from one end of the printing cylinders (16, 18). A first counterpoise assembly (40) includes a first rotary arm (50) having a supporting position for applying a force to the other end (20) of the first printing cylinder (16) to support the first printing cylinder (16) in the frame when the first bearing member (26) is removed. A second counterpoise assembly (42) includes a second rotary arm (50) having a supporting position for applying a force to the other end (22) of the second printing cylinder (18) to support the second printing cylinder (18) in the frame when the second bearing member (28) is removed. Each of the counterpoise assemblies (40, 42) includes a toggle member (60) for moving the respective rotary arm (50) into its supporting position, and for holding the rotary arm (50) in its supporting position against the weight of the associated printing cylinder (16, 18).

Presse rotative comprenant un châssis muni de parois latérales espacées (12, 14), d'un premier et d'un deuxième cylindres d'impression (16, 18) et d'éléments d'appui (26, 28) pour soutenir les extrémités (20, 22) du premier et du deuxième cylindres d'impression (16, 18) pour une rotation dans les parois latérales (12, 14) du châssis. Les premier et deuxième éléments d'appui (26, 28) peuvent être retirés d'une des extrémités des cylindres d'impression (16, 18). Un premier ensemble de contrepoids (40) comprend un premier bras rotatif (50) ayant une position de support pour exercer une force sur l'autre extrémité (20) du premier cylindre d'impression (16) pour soutenir ce dernier (16) dans le châssis lorsque le premier élément d'appui (26) est retiré. Un deuxième ensemble de contrepoids (42) comprend un deuxième bras rotatif (50) ayant une position de support pour exercer une force sur l'autre extrémité (22) du deuxième cylindre (18) pour soutenir ce dernier (18) dans le châssis lorsque le deuxième élément d'appui (28) est retiré. Chacun des ensembles de contrepoids (40, 42) inclut un élément d'articulation à genouillère (60) pour déplacer le bras rotatif respectif (50) dans la position de support, et pour le (50) retenir dans cette position contre le poids du cylindre d'impression correspondant (16, 18).

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