Automatic split charging device of powder split charging machine

The automatic split charging device of the powder split charging machine comprises a supporting mechanism and a filling mechanism, the filling mechanism comprises a feeding hopper and a discharging hopper, and a limiting assembly is arranged on the lower surface of the discharging hopper; the limiting assembly comprises a connecting rod, a transverse plate and a spring ring, the outer wall of the connecting rod is sleeved with the spring ring, the upper surface of the spring ring abuts against the transverse plate, and according to the technical field of powder filling machines, the transverse plate is pressed downwards, so that a filling bag makes contact with the limiting column, then the transverse plate is loosened, and the transverse plate makes contact with a discharging hopper above under the action of the spring ring; and meanwhile, when the filling bags with different sizes are filled, the height of the bearing plate is changed by changing the position relation between the bearing plate and the inser