Adsorption manipulator capable of preventing workpiece from falling off

The adsorption manipulator capable of preventing the workpiece from falling off comprises a mounting frame, a fixing plate, a connecting seat, an adjusting mechanism and a connecting pipe, the fixing plate is fixedly connected to the middle of the top of the mounting frame, the connecting seat is fixedly connected to the middle of the top of the fixing plate, and the adjusting mechanism is fixedly connected to the connecting seat. According to the adsorption mechanical arm capable of preventing the workpiece from falling off, after adsorption is completed, a double-shaft motor is started, a threaded rod is driven to rotate, moving blocks are made to get close to each other through cooperation of limiting blocks and limiting grooves, the moving blocks are driven to move, and the workpiece is prevented from falling off. Therefore, the situation that the workpiece falls off due to insufficient suction force caused by the fact that the workpiece is too heavy or the surface of the workpiece is uneven is avoided, t