Three-dimensional plastic bag vacuum packaging equipment

The invention discloses three-dimensional plastic bag vacuum packaging equipment which comprises a bag jacking and feeding mechanism, a bag transferring mechanism, a product feeding line and a pushing mechanism, a movable part of the bag transferring mechanism can reciprocate between the bag jacking and feeding mechanism and the product feeding line, a suction cup is arranged on the movable part of the bag transferring mechanism, and the pushing mechanism is arranged on the suction cup. A transfer platform is arranged at one end of the product feeding line and located in a U-shaped movable frame, four air cylinders for product clamping are arranged on the U-shaped movable frame, and an L-shaped clamping block is arranged on each air cylinder for product clamping. After the plastic bag is opened, the four L-shaped clamping blocks clamp the four edges of the product, the movable frame moves forwards, the four L-shaped clamping blocks and the product stretch into the plastic bag, and the pushing mechanism pushes