Sorting system applied to injection molding production

The invention provides a sorting system applied to injection molding production. The sorting system comprises an air cylinder drawing mechanism, a tray device, an industrial weighing instrument and a circuit signal controller. The air cylinder drawing mechanism is arranged above the tray device. The tray device makes contact with the top end of the industrial weighing instrument. The industrial weighing instrument is electrically connected with the circuit signal controller. The circuit signal controller is electrically connected with the air cylinder drawing mechanism. The industrial weighing instrument is used for measuring cable clamps, the circuit signal controller controls the air cylinder drawing mechanism for control, the cable clamps are sorted through the air cylinder drawing mechanism, defects of the cable clamps are confirmed accurately, the cable clamps with the defects are sorted out, the occupation rate of defective goods is reduced, and therefore production cost is reduced.