Patent ID: 7552613

Claim:
A bending machine comprising a base comprising a bottom board having two sides and a top surface; a pivotal bracket being mounted securely on the top surface of the bottom board and having a top; and a pivotal portion formed on the top; an opened bracket being mounted securely on the top surface of the bottom board, separated from and opposite to the pivotal bracket and having a top; and an opening being formed through the top of the opened bracket; and a mold die being disposed on the top surface of the bottom board and being securely mounted between the pivotal bracket and the opened bracket; and a stage having a pivotal end being pivotally connected with the pivotal portion of the pivotal bracket; a detachable end being adjacent to the opening of the opened bracket and detachably connected with the opened bracket; a driver being mounted securely on the stage and having a shaft slidably mounted through the stage; and a ram being mounted securely on the distal end of the shaft and having a side corresponding to the opening of the opened bracket, wherein the pivotal portion of the pivotal bracket has a pivot hole formed transversely through the pivotal portion; the opened bracket has two ears being formed oppositely on the top of the opened bracket adjacent to the opening, and each ear has a mounting hole formed transversely through the ear and aligning with the mounting hole of the other ear; the pivotal end of the stage has a through hole formed transversely through the pivotal end and coaxially aligning with the pivot hole of the pivotal portion; the detachable end of the stage has a protrusion disposed between the ears of the opened bracket and having a securing hole formed transversely through the protrusion and coaxially aligning with the mounting holes of the ears of the opened bracket; and the bending machine further has a pintle being mounted through the through hole in the pivotal end of the stage and the pivot hole in the pivotal portion of the pivotal bracket to pivotally connect the pivotal end of the stage with the pivotal portion of the pivotal bracket of the base; and a pin being mounted through the mounting holes of the ears of the opened bracket and the securing hole in the protrusion of the stage to detachably connect the detachable end of the stage with the opened bracket of the base.