The invention discloses a cleaning device of an injection mold. The cleaning device comprises a first support, a liquid inlet
pipe, a cleaning liquid spray head, a second support, a fixed device, a telescopic rod, a rotating device, a
brush rod,
brush heads, a conveying belt and an injection molding device fixing box. The first support and the second support are arranged on one side of the conveying belt. The cleaning liquid spray head is mounted at one end of the first support. The fixed device is arranged on the lower portion of the upper end of the second support. The telescopic rod is arranged at the lower end of the fixed device. The rotating device is arranged at the lower end of the telescopic rod. The
brush rod and the brush heads are arranged at the lower end of the rotating device. The cleaning device is simple in structure, convenient to use, high in cleaning speed and good in
impurity removal effect, and little energy is utilized.