The invention provides a multi-water-channel
hot stamping die. The multi-water-channel
hot stamping die comprises an upper die base, upper die inserts, a lower die base and lower die inserts. The upper die base and the lower die base are each provided with a main
water channel, a plurality of cavities are formed in each main
water channel, the cavities are communicated through water passing openings, the
caliber of each water passing opening is far smaller than the size of the corresponding cavity, cooling media in the water channels and the cavities in a
stable state can be changed into a turbulent flow state, and the
cooling efficiency is improved. Meanwhile, the multiple cavities are arranged in a non-single straight line in the main water channels, water retaining blocks are placed insome water passing openings of the cavities, multiple cooling areas can be formed, the multiple inserts are correspondingly arranged in the multiple cooling areas, simultaneous cooling of the multipleinserts can be achieved,
water supply cooling can be conducted on only one insert, The cooling
water flow of the main water channels is controlled in a targeted mode, unnecessary cooling circulationis reduced, the main water channels and all parts of the inserts are accurately controlled to be evenly cooled, a
hot stamping part is fully and evenly cooled, and the problems that the
mechanical property of the hot
stamping part is unstable and the deformation amount is large are solved.