High-stability semiconductor laser marking machine

The utility model relates to the technical field of marking machines, and discloses a high-stability semiconductor laser marking machine which comprises a base, a fixing frame is fixedly arranged at the top of the base, an air cylinder is fixedly arranged at the top of the fixing frame, a mounting rod is fixedly arranged at the tail end of a piston rod of the air cylinder, and a radio frequency laser is fixedly arranged at the lower end of the mounting rod. A fixing table is fixedly arranged at the top of the base, and a placing table is arranged at the top of the fixing table in a sliding mode; a protective cover is slidably arranged on the rod wall of the mounting rod, an elastic assembly connected with the protective cover is arranged on the rod wall of the mounting rod, a dust suction box is fixedly arranged on the side wall of the fixing frame, a connecting pipe is fixedly arranged on the side wall of the dust suction box, and the tail end of the connecting pipe communicates with the side wall of the pro