The utility model belongs to the technical field of mechanically welded and welding manipulator is disclosed, the on -line screen storage device comprises a base, the top of base is equipped with thespout, just is in the top of spout is equipped with rather than the slider of mutually supporting and using, and the top of slider is equipped with a support the top of support is equipped with a workpiece the one end of work piece is equipped with the test rod, just is in the bottom of test rod is equipped with a digital display angle spirit level, one side of digital display angle spirit levelis equipped with a reflective membrane, one side of spout is equipped with an emitter, the top and the feeding base fixed connection of base. The utility model discloses can conveniently adjust welding manipulator's welding height to satisfy different weld workpiece's welding requirements, make it possess application range better, through adopting mutually supporting of slider and spout, can realize the welding jobs to weld workpiece, thus can be so that the manipulator welding of our case become simpler, and welding quality is also more stable.