Novel cutting-off device for thin film

The utility model relates to a novel cutting-off device for a thin film. The novel cutting-off device comprises a mounting plate and a winding roller for rolling the thin film, wherein a pressure roller pressing the thin film of the winding roller is arranged on the mounting plate. The novel cutting-off device is technically characterized in that a cutter swing arm is hinged to the mounting plate; a cutter which can be used for cutting off the thin film is arranged at one end, close to the winding roller, of the cutter swing arm; a pressing and brushing block which can be used for smoothing the thin film and pressing the thin film on the winding roller when the cutter cuts off the thin film is arranged on the cutter; a driving mechanism for driving the cutter swing arm to rotate is arranged on the mounting plate. According to the novel cutting-off device disclosed by the utility model, the structure is simple; the thin film cut off by the cutter can be stably wound, and cut-off tailings are fewer.