Device for spraying antirust paint on outer surface of metal packing box

The invention provides a device for spraying antirust paint on the outer surface of a metal packing box. The device comprises a platform, a clamping mechanism and a paint spraying mechanism; the clamping mechanism is used for fixing the metal packing box; the paint spraying mechanism comprises a sliding chute, a sliding table, a nozzle fixing rod and a paint spraying nozzle; the sliding chute is arranged on one side of a screw rod fixing groove, and the length direction of the sliding chute is parallel to the length direction of the screw rod fixing groove; the bottom of the sliding table is embedded into the sliding chute, and a sliding rail and sliding block structure is formed by the sliding table and the sliding chute; the nozzle fixing rod is fixed on the upper surface of the slidingtable, the paint spraying nozzle is arranged at the top end of the nozzle fixing rod, and the paint spraying direction of the paint spraying nozzle faces a clamping space. The position of the metal packing box to be sprayed w