Patent ID: 8146470

Claim:
A die stamping system, comprising: an upper die; a sliding block comprising a body with a wedge-shaped head facing downwardly, a punch connected to the body, and two arms on opposite sides of the body, respectively; a lower stripper matching the upper die and having a aperture for a passage of the punch therethrough; a die holder connected to the lower stripper and comprising an opening for passage of the body therethrough, and a first notch for receiving the two arms, wherein the first notch is larger than the arms; and a lower die-set movably connected to the die holder and comprising a wedge-shaped padding block facing up, supporting the wedge-shaped head of the body, wherein the sliding block further comprises a cavity defined in the body and an offsetting spring received in the cavity, and the die holder further comprises a second notch receiving the offsetting spring, wherein a total axial length of the cavity and the second notch is equal to or less than an axial length of the offsetting spring.