| 摘要 |
PURPOSE: To exchange with a required impression cylinder corresponding to a film width without manual work, by raising impression cylinders not to be in touch with a form cylinder, moving a movable sprocket to impress a tension to an endless chain, releasing the holding of the impression cylinders, detecting and positioning/holding the required impression cylinder. CONSTITUTION: A lower supporting shaft 23 is held to a pressuring movable stage 10 via a block 27 in a rotatable state. The supporting shaft 23 is mounted at a position determined so that a shaft 4 of an impression cylinder 3 held by an endless chain 20 meshed with the lowest part of a sprocket 25 faces a holding pin of a chuck device 13. Therefore, the endless chain 20 hung between sprockets 24 and 25 of the upper and lower supporting shafts 22 and 23 can run along a route where the held impression cylinder 3 passes an impression cylinder exchange device attaching/detaching the impression cylinder to the chuck device 13. Since the impression cylinder 3 is positionally regulated by the sprocket 25, the position of the cylinder 3 becomes correct and the shaft 4 of the impression cylinder 3 can be attached/detached by the chuck device 13 easily and surely. |
