Material mixing device

The utility model provides a material mixing device. The mixer comprises a rack, a mixing cylinder and a rotary driving mechanism, wherein the rotary driving mechanism is mounted on the rack; the rotary driving mechanism comprises a driving motor, a speed reducing mechanism, a rotating shaft and an encoder; wherein the output end of the driving motor is connected with the input end of the speed reducing mechanism, the output end of the speed reducing mechanism is connected with the rotating shaft, the mixing cylinder is connected with the rotating shaft, and the encoder is installed on the rotating shaft and electrically connected with the driving motor. Compared with the prior art, according to the material mixing device, the encoder is arranged on the rotating shaft, the rotating angle of the rotating shaft can be detected through the encoder, so that the rotating angle of the mixing barrel is obtained, then the driving motor is controlled to be stopped or started, the feeding hole and the discharging hole