| 摘要 |
PURPOSE:To eliminate dislocation of a sheet material by controlling a means to move a sheet attraction part by the use of a sensor to sense the leading edge of the sheet. CONSTITUTION:Attraction port sliders 5 installed on both external sides of a sheet attraction part 4 are taken up by a slide shaft 6 installed at the undersurface of a base plate 10 of a suction air casing 1. A gear 13 is mounted on one of the attraction port sliders 5 installed on both external sides of sheet attraction part 4, and is given slidability through reversible operation of motor 11. The sheet material attraction part 4 moves on the above-mentioned slide shaft 6 in compliance with signals of a photo-transistor, which receives beam from an LED30 for the purpose of sensing the sheet end taken up by the suction air casing 1. Accordingly the sheet misplaced upon the sheet feed base-plate can be put in place certainly. |
