Code spraying equipment for magnetisable cylindrical material part

A code spraying device for magnetisable cylindrical material pieces comprises a clamping jaw device used for clamping the cylindrical material pieces located at a first position, conveying the clamped cylindrical material pieces to a second position and spraying codes; the first magnetizing piece is located above the first position, and the first magnetizing piece is provided with an upper magnet capable of magnetizing the columnar material piece; the second magnetizing piece is located below the first position, and the second magnetizing piece is provided with a lower magnet capable of magnetizing the columnar material piece; the upper magnet and the lower magnet act on the columnar material piece at the same time and drive the columnar material piece to have the pointing direction under the action of the magnetic field. According to the invention, the upper magnet and the lower magnet are adopted to realize automatic alignment of the magnetisable columnar material piece, the manual operation process is omit