| 摘要 |
PURPOSE:To make it possible not only to drive an impression cylinder so as to follow the movement of the impression cylinder but also to easily control driving, by fixing a friction- receiving traction wheel to the shaft of the impression cylinder and providing a friction driving wheel in the vicinity of the leading end of a lever and revolving the lever so that the friction-receiving traction wheel and the friction driving wheel are contacted with each other in a slidable manner and allowed to be spaced apart from each other. CONSTITUTION:A friction receiving traction wheel 12 is mounted to the shaft of an impression cylinder 11 and a lever 10 is revolved by an air cylinder 7 through a lever 8. A shaft 5 fixes a friction driving wheel 6 and is supported in a freely rotatable manner with respect to the lever 10. When the air cylinder 7 is extended and contracted to revolve the lever 10, the friction driving wheel 6 can be operated so as to be freely contacted with the friction- receiving traction wheel 12 in a slidable manner and allowed to be spaced apart therefrom. Further, regardless of the revolving position of the lever 10, the friction driving wheel 6 can be rotated by a motor 1. When a air cylinder 15 is operated to move the impression cylinder 11 around an impression cylinder support shaft 19, the air cylinder 7 is operated to revolve the lever 10 and the slide contact transmission of the friction driving wheel 6 and the friction-receiving traction wheel 12 can be held and, by allowing both wheels 6, 12 to be spaced apart from each other, transmission can be blocked. |
