Laser film transfer device on printing machine

The laser film transfer device comprises a shell, a lifting block, a positioning wheel, a limiting device, a mounting plate, a discharging wheel and a collecting wheel, a positioning groove is formed in the outer wall of the shell, the lifting block is slidably connected to the inner wall of the positioning groove, a lifting rod is fixedly connected to the top of the lifting block, and the limiting device is fixedly connected to the top of the lifting rod. A first lead screw is arranged in a through hole in the middle of the lifting rod and arranged on the outer walls of the two sides of the shell. According to the laser film feeding device, the mounting block is pulled to sequentially penetrate through the non-lifting strip and the bottom of the positioning wheel, then the mounting block and a laser film on the outer wall of the feeding wheel are mutually adhered together, then a rotating shaft is rotated to drive a connecting rope to rotate, and then the connecting rope drives the laser film to move outward