Automatic barrel holding and cover pressing device of production line

An automatic barrel holding and cover pressing device of a production line comprises a base plate, a barrel holding device, an up-down moving mechanism, a cover taking device and a cover supporting and loading device, the barrel holding device comprises a two-way air cylinder and two clamping bodies, and the shapes of the clamping bodies are matched with the shapes of barrels; the two-way air cylinder is fixed to the lower surface of the base plate, the up-down moving mechanism is fixed to the upper surface of the base plate, and the cover taking device is fixed to the up-down moving mechanism. The supporting cover loading device is opposite to the base plate and is matched with the cover taking device; and the base plate moves, the cover taking device takes the cover, the barrel holding device holds the barrel, the base plate returns, and the up-down moving mechanism moves downwards to complete cover pressing. The barrel holding device and the cover taking device are located on the same vertical straight lin