Cutting positioning device for plastic film production

The utility model discloses a cutting positioning device for plastic film production, which comprises a box body, brackets, a discharging groove, an air cylinder and a cutter, the brackets are fixedly connected to two sides of the box body, the discharging groove is arranged at the top of the right side of the box body, and the air cylinder is fixedly connected to the top of the inner wall of the discharging groove. According to the utility model, by arranging the bracket, a plastic film rolling shaft is placed on the bracket during use, the plastic film roller shaft is supported by the bracket, then one end of a plastic film penetrates through the discharging groove and is wound on the other roller shaft, and when the length of the plastic film reaches the required length, the cutter is driven by the air cylinder to move downwards; according to the positioning and cutting device for the plastic film, the plastic film is cut, the length of the plastic film is detected through the distance measuring sensor bef