Automatic stacking device of packing machine

The invention relates to the technical field of stacking equipment, in particular to an automatic stacking device of a packer, which comprises a base, support frames are mounted at the bottom of the base in a rectangular array, the base is of a U-shaped structure, a square hole is formed in the left side of the base in a penetrating manner, and a pushing assembly for pushing plates is arranged on the right side of the base. Two first limiting plates are arranged at the top of the left side of the base, second limiting plates penetrating through the bottom of a square hole are installed on the opposite sides of the two first limiting plates, and third limiting plates are installed on the right sides of the first limiting plates. And then under the cooperation of the intermittent moving assembly, the plates intermittently extend and retract downwards on the first sliding base, when the plates are stacked to reach a certain height, the plates can be driven to be discharged through the pushing and pressing assemb