Vacuum chuck for notebook computer cover plate

The utility model relates to a vacuum chuck for a notebook computer cover plate. The vacuum chuck is mainly used in the field of repeated positioning and clamping devices for grinding and polishing die-casting products by industrial robots. The suction cup comprises a suction cup cover and a suction cup bottom which are connected, and is structurally characterized in that a suction cup cavity is formed in one side of the suction cup cover, an air storage groove and an air conveying groove are formed in the inner wall of the suction cup cavity, the air storage groove is communicated with the air conveying groove, an air vent is formed in the side wall of the suction cup cover, and the air vent is communicated with the air storage groove. The suction cup bottom is provided with an air conveying hole, one side of the suction cup bottom is provided with an adsorption groove, the adsorption groove is communicated with the air conveying hole, the air conveying hole is communicated with the suction cup cavity, one s