Pneumatic bag beating type automatic unpacking and feeding device

The invention discloses a pneumatic bag beating type automatic unpacking and feeding device. The device comprises a bag carrying machine and a bag conveying mechanism which are used for automatically carrying and conveying material bags and enabling the long side edges of the material bags to face downwards, a bag cutting bin, a cutting mechanism and a fork needle ejection mechanism. The bag cutting bin is used for providing a station for material bag cutting, and notches for passing are formed at the bottom and the side face of the bag cutting bin; a material collector is arranged below the bag cutting bin, and materials are fed into a production machine through a material supply pipeline after being collected; the cutting mechanism is used for cutting the long side edges of the material bags; and the fork needle ejection mechanism is used for ejecting fork needles to fork the material bags and ejecting pulse airflow into the material bags through air holes which are formed in the surfaces of the fork needle