Safety device for Hydraulic Press

A safety device for a hydraulic press comprising:

• a bottom plate;
• wherein the bottom plate includes a through orifice thereon and a pull stud inserted through the through orifice, and the pull stud includes a shank and at least one defining ring fitted on the shank, wherein the bottom plate further includes a clamper, and the clamper has an abutting projection mounted above a top of the bottom plate, wherein the abutting projection has two tilted swing arms rotatably connected on two sides thereof, and two extensions of the two tilted swing arms are located on two sides of the pull stud, wherein a respective one tilted swing arm includes an elongated orifice extending thereon from a central section of the respective one tilted swing arm, and the elongated orifice of the respective one tilted swing arm slidably accommodates a guide rod, wherein the bottom plate further includes a drive device mounted thereon and located behind the abutting projection, and the drive device includes a pushing element;
• wherein in an original state, the clamper is in a clamping state so that two extensions of the two tilted swing arms move close to each other, and the respective one defining ring of the pull stud does not pass across a gap of the two extensions of the two tilted swing arms in the clamping state;
• wherein the pushing element of the drive device pushes the abutting projection to move forward, such that the clamper is switched to be in an unclamping state, and the two extensions of the two tilted swing arms are spaced from each other so that the respective one defining ring of the pull stud passes across a gap of the two extensions of the two tilted swing arms.