Die block assembly with clearance protection mechanism

A die block assembly comprising:

• an upper die including at least one receiving hole defined therein and at least one ram depending therefrom;
• at least one spring, each spring being received in the corresponding receiving hole of the upper die;
• an unloading plate connected under the upper die and vertically movable relative to the upper die, the unloading plate defining at least one through hole, each through hole accommodating the corresponding ram of the upper die;
• and
• blocking means for preventing fragments produced by the spring from entering a clearance between the upper die and the unloading plate, wherein the blocking means is positioned on the unloading plate, and partly received in the at least one receiving hole when the upper die is farthest from the unloading plate;
• and the spring is positioned on the blocking means and is entirely located in the least one receiving hole.

A die block assembly comprising:

• an upper plate including an upper fixing plate, an intermediate plate and a lower clamping plate stacked with one another;
• a receiving hole extending through both said intermediate and clamping plate with one end terminating in the fixing plate and the other end terminating on a bottom surface of the clamping plate;
• an unloading plate under said clamping plate;
• a clearance between the upper die and the unloading plate;
• a spring entirely, constantly disposed in said receiving hole;
• a workpiece located under the unloading plate;
• and
• a spacer block located on said clamping plate and in alignment with said receiving hole;
• wherein
• said spacer block includes a base with an upper portion constantly received in
• said receiving hole, and one end of the spring seated on said upper portion and the other end of the spring received in said fixing plate.