Cylindrical film packaging bag forming and opening device

The utility model discloses a barrel film packaging bag forming and opening device, and belongs to the technical field of packaging. The edge sealing and cutting module comprises a heat edge sealing mechanism and a cutting mechanism, the heat edge sealing mechanism is used for conducting heat edge sealing on the front end of the barrel film packaging bag, and the cutting mechanism is used for cutting the rear end of the barrel film packaging bag; the conveying module is used for conveying the barrel film packaging bag to the pre-opening module; the pre-opening module comprises an upper opening mechanism and a lower opening mechanism which are oppositely arranged, and the upper opening mechanism and the lower opening mechanism are used for opening the rear end of the cylindrical film packaging bag so that the bag opening module can be inserted; the bag opening module comprises a left bag opening sub-package and a right bag opening sub-package, and each of the left bag opening sub-package and the right bag open