The utility model belongs to the field of automobile sound insulation cotton, and particularly relates to a
raw material mixing device for automobile sound insulation cotton production, which comprises a bottom plate, the top of the bottom plate is fixedly connected with a mixing cylinder; the top of the mixing cylinder is fixedly connected with a top cover; the
impurity removing mechanism comprises a screening box fixedly connected to the top of the top cover, the screening box is opposite to the top groove in position, a side groove is formed in the screening box, and a screen is slidably connected into the side groove; through the structural design of the
impurity removal mechanism, large-particle impurities existing on the surfaces of raw materials can be screened out through a screen, an electric telescopic rod drives the screen to move up and down in a circulating mode, meanwhile, the screen is vibrated through a connecting spring, the raw materials are distributed on the surfaces of the screen, and the screening-out speed of the large-particle impurities is increased; the cleanliness of the raw materials before mixing is improved, the situation that the
mixing effect on the raw materials is affected by the existence of impurities is avoided, meanwhile, the raw materials on the inner wall of the mixing
barrel can be mixed through rotation of the stirring rod, and mixing dead corners of the raw materials are avoided.