Carton film covering device

The utility model discloses a carton film covering device which comprises a first conveying mechanism, a second conveying mechanism and a film cutting device. The film cutting device comprises a portal frame, a base, screw rods, an upper film cutting seat, a lower film cutting seat, an electric heating head, a cutting knife and a heat sealing base plate, the portal frame is symmetrically provided with the two screw rods, the upper part and the lower part of each screw rod are in threaded mirror arrangement, the upper film cutting seat and the lower film cutting seat are symmetrically arranged, and the upper film cutting seat and the lower film cutting seat are driven by a driving mechanism to do synchronous mirror movement; an electric heating head is fixed to the bottom of the upper film cutting base, a cutting groove is formed in the middle of the bottom face of the electric heating head, a cutting knife is fixed to the middle of the top face of the lower film cutting base, a heat sealing base plate is inst