Mixing device for preparing thermoplastic plastic product POS machine shell

The utility model discloses a mixing device for preparing a thermoplastic plastic product POS (Point Of Sale) machine shell, relates to the technical field of POS shells, and aims to solve the problems of incomplete discharging and inconvenience in cleaning caused by adhesion of thermoplastic plastic raw materials on the inner wall of mixing equipment during mixed preparation of the conventional POS shell. Comprising a mixing cylinder, two sleeving outer discs are arranged on the outer wall of the mixing cylinder, two vertical supporting rods are arranged at the lower ends of the two sleeving outer discs, and a material receiving box is arranged between the two vertical supporting rods; the stainless steel inner container is installed in the mixing cylinder, clamping end blocks are arranged on the outer walls of the two sides of the stainless steel inner container, the clamping end blocks and the stainless steel inner container are integrally formed, two clamping grooves are formed in the inner wall of the mi