Full-automatic pneumatic cover pressing device

The utility model discloses a full-automatic pneumatic capping device, which relates to the field of bottle capping and comprises a main conveying belt and an auxiliary conveying belt, the upper surfaces of the main conveying belt and the auxiliary conveying belt are fixedly connected with sliding chutes, the interiors of the sliding chutes are connected with guide rails in a sliding manner, and the upper parts of the guide rails are provided with damping components; positioning plates are fixedly connected to the two sides of the upper surface of the damping assembly, first springs are fixedly connected to the side walls of the positioning plates, and clamping plates are fixedly connected to the other ends of the first springs; through cooperation of the base, the piston plate, the second spring and the air bag, when the compression air cylinder conducts extrusion forming on bottles and cans and bottle caps, a certain buffering effect can be achieved; due to the fact that the air bag is communicated with the