Laser engraving machine

The invention discloses a laser engraving machine, and particularly relates to the technical field of laser processing equipment. The laser engraving machine comprises a laser device and a displacement mechanism; the bottoms of supporting rods are rotationally connected with a first rotary shaft, a first helical gear is arranged on the first rotary shaft, and the bottom of the first helical gear is provided with a sponge and cleaning hair; a second rotary shaft is rotationally connected between the two supporting rods and provided with a wind wheel and a second helical gear; two connection rods are fixed to the bottom of a water bag, and a first supporting frame is slidably connected between the two connection rods and rotationally connected with a third rotary shaft and a fourth rotary shaft; the third rotary shaft is provided with a driving wheel, the fourth rotary shaft is provided with a cam, and a belt is connected between the third rotary shaft and the fourth rotary shaft; and one side of the water bag