Waste plastic crushing device

The utility model discloses a waste plastic crushing device. Box body, a feeding funnel is arranged at the upper end of the box body in a penetrating manner; device cavities are formed in the inner walls of the two opposite sides of the box body. Limiting mechanisms are fixedly connected to the inner bottoms of the two device cavities; a supporting table is fixedly connected to the side wall of the box body. The upper end of the supporting table is fixedly connected with two supporting legs. The upper ends of the two supporting legs are jointly and fixedly connected with a driving motor. And an output shaft of the driving motor is fixedly connected with a first-stage crushing mechanism, baffles are fixedly connected to the inner walls of the two opposite sides of the box body, a second-stage crushing mechanism is arranged between the two baffles, a discharging opening is formed in the lower end of the box body in a penetrating mode, and two supporting legs are fixedly connected to thelower end of the box body