| 摘要 |
PURPOSE:To make it possible to change automatically by presetting beforehand an original sheet that has a special zig in a form of cartridge and providing a means to mount and dismount automatically printing cylinder successively with only push button operation. CONSTITUTION:An automatic exchanging device consists of an original sheet 3 with a jig, sheet presetting device 16, sheet carrier 17 and sheet transfer device. The original sheet 3 has as a whole elastic, effect, and provided with anchor shaped mounting devices 12 and 15 at both front and rear ends. The sheet preset device 16 is movable and sends out the original sheets 3 that are arranged beforehand by order successively to a specified position. When the sheet carrier 17 receives the original sheet 3 from the preset device 16 and carry it to a specified position on the upper part of a printing section, the sheet transfer device hands it to a printing cylinder 77. The original sheets 3 that have to be exchanged successively are set like a cartridge at the outside of the machine, and the cartridge can be automatically mounted and dismounted with a push button only with the assistance of a cylinder 21. |
