Laser engraving device

The invention discloses a laser engraving device. The device comprises a machine base, a workbench, a laser engraving head and an adjustable mechanism are arranged on the machine base, and a round hole is formed in the middle of the workbench; first sliding grooves and auxiliary grooves are correspondingly and symmetrically formed in the workbench along the round hole, sliding blocks are slidablyconnected in the first sliding grooves, and first springs are arranged between the sliding blocks and the first sliding grooves; round shafts are rotationally connected in the first sliding grooves; the auxiliary grooves comprise vertical grooves and transverse grooves, first inclined wedge blocks are slidably connected in the vertical grooves, and second inclined wedge blocks are arranged in thetransverse grooves; second springs are arranged between the second inclined wedge blocks and the vertical grooves, and clamping mechanisms are arranged on the second inclined wedge blocks; through holes are formed in the botto