Guide rail bag feeding mechanism on vacuum packaging machine

The utility model discloses a guide rail bag feeding mechanism on a vacuum packaging machine, which comprises two guide rails, the two guide rails are respectively provided with a sliding seat sliding along the guide rails, the sliding seats are driven by a motor to move, the sliding seats are provided with material taking air cylinders, telescopic rods of the material taking air cylinders are provided with material placing air cylinders, and the telescopic rods of the material taking air cylinders are provided with the material placing air cylinders. A flat plate is mounted on a piston rod of the discharging air cylinder, a vacuum suction cup is mounted on the flat plate, mounting strips sequentially arranged extend out of the two side walls of the flat plate respectively, strip-shaped first mounting grooves are formed in the mounting strips, the first mounting grooves can extend to the flat plate, second mounting grooves sequentially arranged are formed in the middle of the flat plate, and the first mountin