Puncturing die structure

The utility model discloses a piercing die structure which comprises a lower die holder, a fixed die and an upper die holder, the fixed die is fixed at the top end of the lower die holder, a movable die is fixed at the bottom end of the upper die holder, cutters are mounted on two sides of the movable die, and dismounting structures are arranged at the top ends of the cutters. The upper die base can be conveniently lifted by arranging the buffer structure, the upper die base needs to be lifted for demolding during use, the buffer sleeve moves downwards along with the upper die base during stamping, the buffer sleeve extrudes the buffer spring downwards at the moment, the guide column can guide the buffer sleeve, and the buffer sleeve is prevented from falling off. The rolling wheels in the guide columns roll in the sliding grooves so that friction force between the guide columns and the buffer sleeves can be reduced, the service life of the die can be longer, after stamping is completed, the buffer sleeves ar