Automatic protection device for photosensitive drum

The utility model discloses an automatic protection device for a photosensitive drum, which relates to the technical field of photosensitive drums and comprises mounting plates, shading structures and taking-out structures, a photosensitive drum body is transversely mounted between the mounting plates, and the taking-out structures are positioned on one side of the mounting plates at the upper end and the lower end of the photosensitive drum body. Servo motors are mounted on the sides, away from each other, of the mounting plates, cavities are formed in the middle positions in the mounting plates, rotating rods are mounted at the output ends of the servo motors, the shading structures are located in the mounting plates on the outer sides of the cavities, and each shading structure comprises an annular sliding groove. According to the photosensitive drum shading device, the sliding block is driven by the movable rod, the sliding block drives the connecting rod, the connecting rod drives the movable plate, the