| 摘要 |
PURPOSE:To make a sag in a belt and the falling of a plate work preventable without fail, by forming a holeless belt part in a specified spot in the direction of the breadth of a multiholed belt over its overall length, while installing a belt holding suction pressure part in a passing position of the backside. CONSTITUTION:A plate work being fed to the lower surface of a multiholed belt 12 is attracted to a surface of the multiholed belt 12 and conveyed forward when each of pressure chambers 21 is interconnected to a suction pressure chamber 24 via a rotary valve 28, while the rotary valve 28 is changed over at a specified position and each of these pressure chambers 21 is interconnected to a positive pressure chamber 27, and if so, the plate work immediately drops, thus piling takes place as specified. In addition, the multiholed belt 12 is formed with a holeless belt part 19 over its overall length, while a belt holding suction pressure part 34 faces on its passing backside and is interconnected to the suction pressure chamber 24 all the time so that the multiholed belt 12 will in no case sag with its dead load. Thus, an unattractable spot for the plate work is not produced there and its careless drop is prevented with certainty. |
