Laser upside-down hanging robot for welding

The utility model discloses a laser upside-down hanging robot for welding, which belongs to the technical field of welding equipment and comprises a working table, a workpiece and a U-shaped plate are arranged at the top end of the working table, first sliding grooves are formed in two sides of the working table, and a driving motor is mounted on the side face of the U-shaped plate. A groove is formed in the bottom face, a hydraulic cylinder is arranged, first sliding blocks located in the first sliding grooves are fixed to the inner sides of the bottom end of the hydraulic cylinder, the output end of the driving motor extends into the groove and is connected with a screw rod, a moving block in threaded connection with the screw rod is fixed to the top end of the hydraulic cylinder, and a piston rod of the hydraulic cylinder is connected with a bearing block; a straight rod is fixed to the side face of the bearing block through a connecting block, a mounting base is fixed to the bottom end of the straight rod