Laser marking machine with lens protection mechanism

The utility model relates to the technical field of laser marking machines, and discloses a laser marking machine with a lens protection mechanism, which comprises a base, a support table is fixedly arranged on the top surface of the base, and a protection mechanism and a moving mechanism are arranged on the top surface of the support table. A reciprocating threaded rod is driven by a first motor to rotate, so that the reciprocating threaded rod drives a first sliding block to move up and down, and a second threaded rod is rotated to drive a second sliding block and a first hydraulic rod to move; a second clamping plate is driven by a first hydraulic rod to carry out clamping laser marking on an object needing to be marked; a sliding rod is rotated to drive a third sliding block and a second supporting box to move, a second inserting rod and a first supporting rod are rotated to drive two rods to drive a first sliding block to move, and a check block arranged on the side face of the second supporting box and