Stamping mold adapted to stamp characters in workpieces

A stamping mold to stamp characters in workpieces, comprising:

• a base comprising a supporting surface and a protruding block extending upwardly from the supporting surface, and defining a first through hole in a center of the supporting surface;
• a mold holder rotatably installed on the base and defining a second through hole corresponding to the first through hole and a plurality of receiving holes arranged in a circular array around the second through hole;
• a plurality of mold inserts received in the plurality receiving holes respectively, and selectively corresponding to the protruding block, wherein each of the plurality of mold inserts comprises a character locating on a top thereof, wherein a height of each character is substantially equal to that of the protruding block;
• a stripper comprising a cover and a positioning shaft projecting vertically from the cover, the cover defining a plurality of passage holes arranged in a circular array around the positioning shaft, wherein the positioning shaft comprises a positioning portion passing through the second and first through holes, in turn, and a stopper portion stopped below the base to prevent the positioning shaft from moving out of the first and second through holes, wherein the positioning portion matches with the first through hole to prevent the stripper from rotating relative to the base;
• and
• a spring coiled around the positioning shaft with two ends respectively abutting against the cover and the mold holder to space the cover from the mold holder;
• wherein during stamping characters, the mold holder is driven to rotate about the positioning shaft of the stripper until selected one of the mold inserts is pushed up by the protruding block, then the stripper is pressed down toward the mold holder, and the pushed mold insert passes through corresponding one of the passage hole in the stripper and exposed out of the cover to stamp the workpieces.