| 摘要 |
PURPOSE:To prevent a slip caused between a conveyed article and shield belt, by providing a sucker belt device which moves running the shield belt for preventing vacant suction of a sucker conveyer at an equal speed to a belt of the sucker conveyer. CONSTITUTION:If a printed corrugated cardboard 4 is fed between a perforated belt 5 and shield belt 15 from a printing roll 2, belt holes 12 on a suction box 11 are partially covered by the cardboard 4, however, the rest of the holes is covered by the belt 15, and vacant suction is not caused, then the cardboard 4 is applied with prescribed sucking force, closely attached to the belt 5 and fed to a work roll 3. As the cardboard 4 advances, the belt 15 is separated from the belt 5 of a sucker conveyer 1, however, the belt 15 is always driven by a perforated belt 25 in a shield belt device 14 in the upper front end to move at an equal speed to the belt 5 of the conveyer 1, and the upper face of the cardboard conveyed by the belt 5 and a part of the shield belt contacted to the upper face of said cardboard are advanced at the same speed without causing slip page. |
