Four-edge-sealed three-dimensional bag packaging machine

The invention discloses a four-edge-sealed three-dimensional bag packaging machine. An automatic film supply module and a punching device are arranged at the lower part of a quantitative conveying line and are matched with a three-sealing module for conveying to realize shaping and sealing of three three-dimensional edges of a three-dimensional bag, then a film material guide frame is used for guiding a covering film into a rear-end bagging conveying line, meanwhile, the rear-end bagging conveying line is in butt joint with the quantitative conveying line, quantitative bagged food is guided into the film material, then the last edge of the film material is sealed, then the four-edge-sealed three-dimensional bag moves towards an end opening sealing module on the rear-end bagging conveying line in a cylindrical unsealed state, and hot melting sealing of the two ends of the four-edge-sealed three-dimensional bag is achieved through the end opening sealing module. According to the four-edge-sealed three-dimension