| 摘要 |
<p>Vacuum plate (1) for releasably fastening items to be worked on, to a surface of said plate, wherein said plate comprises a box structure having a bottom plate, four sides and a top plate, where the top plate is provided with at least one aperture (5), and where the volume enclosed by the box structure comprises for each aperture a separate air duct (8) passing under the aperture, and where all air ducts are connected to a source of pressurised air (6), such that an airflow may be created past the aperture, and that upstream in relation to the aperture in each air duct a venturi (9) is arranged, and down stream from said aperture an air outlet (13) is provided, and further that the aperture is in communication with the air duct (6), between the venturi and the outlet.</p> |
