Pneumatic type steel ball sorting module for PLC teaching practical training and checking method of pneumatic type steel ball sorting module

The invention discloses a pneumatic steel ball sorting module for PLC teaching practical training and an examination method thereof. The pneumatic steel ball sorting module comprises a mounting plate, a steel ball blanking assembly, a steel ball specification judgment assembly, a steel ball classified collection assembly and a PLC control unit, the steel ball discharging assembly pushes steel balls into the steel ball specification judging assembly through a sliding table air cylinder, the steel ball specification judging assembly is provided with a stepped groove, each step of the stepped groove is provided with a photoelectric switch, the specification of the steel balls is judged according to the shielding condition of the photoelectric switches, and the stepped groove is connected with an overturning air cylinder. The steel balls enter the sliding ways from the stepped grooves after being driven by the overturning air cylinders to overturn, the rotating baffles are powered by the push-pull air cylinders,