Bag opening and opening mechanism

The utility model relates to a bag opening and opening mechanism, belongs to the technical field of bag opening equipment, and solves the technical problem that a bag opening mechanism in the prior art is inconvenient for bagging. The bag opening and opening mechanism comprises a U-shaped base. The round pipe is mounted on the U-shaped base and located between the opposite inner side faces of the U-shaped base, and the axis of the round pipe is horizontally arranged; the opening and closing mechanism is rotationally installed on the round pipe, a material channel is formed in the opening and closing mechanism, the material channel communicates with the round pipe, and the opening and closing mechanism is used for opening a bag opening of the bag; and the driving mechanism is hinged to the outer side wall of the U-shaped base, the output end of the driving mechanism is hinged to the opening and closing mechanism, and the driving mechanism is used for driving the opening and closing mechanism to enlarge and shr