Optoelectronic tracking mechanism for box type transparent paper packaging machine

An electro-optic tracking mechanism for a cassette type transparent paper packing machine is provided with an additional input turning arm on the driving roller of the film cutting mechanism of the packing machine, a gear set on the driving roller and the additional input turning arm, and an end of an additional input turning arm A synchronous motor is connected; a rotary cutter shaft signal piece is connected to the rotary cutter shaft of the slit film mechanism, and a signal switch is arranged at the rear side of the cutter holder. The photoelectric head is mounted on the film of the film tension transfer mechanism of the packaging machine. There is a lining board under the photoelectric head and printing film, and a light-control correcting device is installed on the packing machine. The light-control correcting device is electrically connected with the synchronous motor, the signal switch and the photoelectric head, and can receive signals from the signal switch. The electric signal indicates that the photoelectric head detects the printed film image and then processes the detected result to issue a command to the synchronous motor. The utility model can make the printing film picture cut accurately, avoid the phenomenon of disordered printing, and improve the packaging precision and work efficiency.