Full-automatic positioning device convenient for laser etching

The utility model belongs to the technical field of laser etching positioning, and relates to a full-automatic positioning device convenient for laser etching, which comprises a bottom shell, and the bottom of the inner wall of the bottom shell is fixedly connected with a fixed frame and a vertical plate. According to the full-automatic positioning device convenient for laser etching, a clamping rod, a spring, a clamping groove and a crank are arranged, and the crank is rocked to drive a second right-hand threaded column and a second left-hand threaded column to rotate, so that two second threaded cylinders move on the surfaces of the second right-hand threaded column and the second left-hand threaded column correspondingly, and the two second threaded cylinders drive movable seats to move correspondingly; the two movable seats drive the two arc-shaped limiting plates to get close to each other or get away from each other, a product can be rapidly positioned and fixed, a clamping rod is pulled to be separated