Detection device for paper bag production

The utility model discloses a detection device for paper bag production. The device comprises a base and an infrared emitter, a machine body is installed on the base. An upper feeding paper tube is rotationally connected to the rotating bracket; a paper tape on the upper feeding paper tube penetrates through the guide roller; the guide roller is mounted on the bracket; a sleeve is mounted on the bracket; the sleeve is provided with a lower feeding roller through a rotating shaft; paper tapes on the upper feeding paper tube and the lower feeding roller penetrate through a gap between the uppertransverse plate and the lower transverse plate; support shafts are fixed on the upper transverse plate and the lower transverse plate; the supporting shaft is inserted into the insertion hole of thesupporting rod, the lower end of the supporting rod is provided with a roller, the supporting shaft is sleeved with a spring, the upper transverse plate is provided with an infrared emitter, the lowertransverse plate is provid