Feeding mechanism of bag feeding machine

The utility model discloses a feeding mechanism of a bag feeding machine, and relates to the technical field of feeding of bag feeding machines. Raw materials are poured into the charging box, and the air in the charging box is pumped out through starting of the exhaust pipe, so that the raw materials are tighter; raw materials fall into the first discharging pipe from the charging box, and then the raw materials are driven to move through rotation of the first rotating piece; after the raw materials move into the second discharging pipe, the second rotating piece rotates to drive the raw materials to move, the output quantity of the raw materials is controlled according to the number of turns and the speed of rotation, it is ensured that the output quantity of each bag does not have too large errors, and the product quality is better controlled; when material injection is not needed, a round rod blocks a funnel leakage opening, when material injection is needed, the funnel leakage opening is not blocked by t