Suction gripper

The utility model relates to a suction gripper, which belongs to the technical field of grippers and comprises a connecting base, a plurality of connecting through holes are formed in the connecting base, a connecting rod is inserted into the position, corresponding to each connecting through hole, of the connecting base, one end, close to the connecting base, of each connecting rod is connected with a top disc, and the top discs abut against the connecting base. The ends, close to the top disc, of the connecting rods are fixedly connected with expansion parts, the expansion parts abut againstthe sides, corresponding to the interiors of the connecting through holes, of the connecting bases, conical surfaces are formed in the expansion parts, and the diameters of the expansion parts are gradually reduced from the ends close to the top disc to the ends away from the top disc. A sleeve is fixedly connected to the position, close to each connecting rod, of the support, the ends, close tothe support, of the connec