Injection molding pulverizer capable of automatically distributing materials

The utility model discloses an injection molding pulverizer capable of automatically distributing, which relates to the technical field of firework production, and comprises a pulverizing box and a classification assembly, a mounting seat is arranged below the rear end of the pulverizing box, an additional back plate is arranged below the front end of the mounting seat, and the classification assembly is arranged above the right side of the front end of the additional back plate. And the classifying assembly comprises a speed adjusting motor, a driving roller, a first belt wheel, a conveying belt, a second belt wheel and a transmission roller, the output end of the speed adjusting motor is connected with the driving roller, and the driving roller is sleeved with the first belt wheel. According to the injection molding pulverizer capable of automatically distributing the materials, the speed adjusting motor drives the driving roller and the first belt wheel to transmit, the first belt wheel drives the three se