The utility model relates to the technical field of
punching dies, and discloses a deep taper hole product forming die which comprises an upper die base and a lower die base, an upper die plate is installed at the bottom end of the upper die base through an upper pressing plate, a lower die plate matched with the upper die plate in an adaptive mode is installed at the top end of the lower die base, and a blank body is arranged on the top face of the lower die plate. An electric telescopic rod is installed at the position, close to one side, of the top end of the lower die base, a liquid spraying
pipe is installed at the
tail end of a push rod of the electric telescopic rod, a connecting
pipe is connected to the middle of the side, away from the lower die plate, of the liquid spraying
pipe, and the end, away from the liquid spraying pipe, of the connecting pipe is connected with an air conveying pipe and an infusion pipe. Lubricating
oil can be sequentially sprayed on the surfaces of the lower mold plate and the blank body through the connecting pipe, the liquid spraying pipe, the lower mold base and the blank body, so that friction between the blank body and the upper mold plate is reduced, the blank body is easier to deform in a cavity, and the probability that other defects such as scratches are generated on the surface of a blank is reduced.