Material mixing machine for compound additives

The utility model discloses a material mixing machine for compound additives, which comprises an inverted conical cylinder body, a distribution box, a rotating arm, a first braking part, a second braking part and agitation parts. A feeding port and a discharging port are arranged at the top and the bottom of the inverted cylinder body respectively. One end of the distribution box is arranged outside the cylinder body, and the other end of the distribution box is arranged inside the cylinder body. The end inside the cylinder body is close to the top of the cylinder body. The middle of the rotating arm is connected with the end of the distribution box inside the cylinder body. The agitation parts are arranged at two ends of the rotating arm respectively. The agitation parts comprise driving heads connected with the rotating arm and spiral shafts connected with the driving heads, and free ends of the spiral shafts incline to the bottom of the cylinder body. When the rotating arm rotates along the axis of the rot