Flattening device of automatic packaging machine

The utility model provides a flattening device of an automatic packaging machine, belongs to the technical field of packaging equipment, and solves the technical problems that an existing packaging bag is prone to wrinkling in the product packaging process, product packaging is affected, working efficiency is reduced and the like. The flattening device of the automatic packaging machine comprises a base, a side plate is fixed to the top end of the base, a plurality of first protruding blocks are fixed to the side plate, through holes are formed in the first protruding blocks, sliding rods are slidably connected into the through holes, racks are fixed to the sliding rods, a plurality of transverse rods are fixed to the sliding rods, flattening rollers are rotationally connected to the transverse rods, and a first supporting frame is fixed to the top end of the base. A driving assembly is arranged on the first supporting frame and connected with the rack. The packaging machine has the advantages that the packag