Vacuum gripper with a replaceable film

摘要

The invention relates to a surface area vacuum gripper for sucking and handling workpieces, comprising a housing, in which a negative pressure chamber is provided that can be subjected to negative pressure and wherein the housing comprises on the suction side, facing the workpiece, suction openings having a suction cross-section, wherein a flexible lining is associated to this suction side, which is applied to the workpiece. A film is interposed between the suction side of the housing and the flexible lining. The film includes flow openings which are locally corresponding to the suction openings, wherein the flow resistance of the suction openings is adjustable via the flow cross-section of the flow openings of the film.

主权项

1. A surface area vacuum gripper for suctioning and manipulating workpieces, said gripper comprising a housing having a vacuum chamber that can be subjected to a vacuum, a suction surface and suction openings on said suction surface facing the workpiece, a valve body, in particular a valve ball, a vane element, or a membrane valve of a flow control valve is disposed in the suction openings, said suction openings having a cross-section, wherein a flexible lining is allocated to said suction surface, which is applied to the workpiece, wherein a replaceable film is inserted between the suction surface of the housing and the flexible lining such that the film forms a part of the flow control valve, the valve insert, or a regulating valve, and the film has flow openings corresponding spatially to the suction openings, wherein the cross-section area of the flow openings is smaller than the cross-section area of the suction openings, and wherein the overall flow resistance for an air flow through a suction opening and the corresponding flow opening is determined by the flow cross-section of the flow opening in the film.