Coating device for reducing pinhole defect of paint film on surface of enameled wire

The utility model discloses a coating device for reducing pinhole defects of a paint film on the surface of an enameled wire, which comprises a plurality of paint storage pipes which are longitudinally arranged, the paint storage pipes are transparent pipes, the upper ends of the paint storage pipes are connected with a flow electromagnetic valve, the flow electromagnetic valve is connected with an infusion pump, and the infusion pump is arranged on a liquid storage tank so as to pump out paint liquid in the liquid storage tank at a constant speed; a through hole is formed in the lower portion of the paint storage pipe, the diameter of the through hole is larger than that of the wire core by 0.1-0.2 mm, the wire core penetrates through the through hole in a suspended mode, paint liquid filled in the paint storage pipe coats the surface of the wire core to form a paint film after the wire core penetrates through the through hole, and a backflow pipe communicated with the paint storage pipe is further arranged