Defective product control box for production line

The utility model discloses a defective product control box for a production line. A box body structure is adopted. A feed opening and an open door are arranged at the upper part of a box body, wherein an extraction opening and a closed door are arranged at the lower part of the back surface of the box body; an electric control device is arranged on the box body, and comprises a power supply, a transformer, a delay relay, an air intake source, an electromagnetic valve, an air pump and a signal control board; the power supply is electrically connected with the other electric parts through the transformer and the delay relay; the air pump is arranged at the upper part of the box body through a first connecting seat after being connected with the air intake source and the electromagnetic valve; a telescopic rod at the front end of the air pump is connected with the back of the open door to control the open door to be opened or closed; the signal control board is arranged on the front surface of the box body. According to the defective product control box, a relatively closed box body structure is adopted, so that defective products cannot be freely extracted; the defective product control box can be arranged together with electric detection equipment, and forms a certain linkage relationship with the electric detection equipment; the storage and centralized reworking of the defective products are facilitated, the management of the production line is facilitated, and the quality of products is ensured.