Patent ID: 6110047
Filing Date: 2000-08-29
Classification: B21G,B21J,B21K

Abstract:
A mold for forming an auger tip on a screw, the mold comprising a pair of symmetrical secondary molds each having:a base mold (50) defining therein a U-shaped cutout (51) and a first hole (52) defined to communicate with said U-shaped cutout (51);a first mold (30) detachably received in said U-shaped cutout (51) of said base mold (50), said first mold (30) including a substantially rectangular cutout (31) defined therein, a pair of tracks (32) formed on opposite ends defining said cutout (31), a second screw hole (33) defined to communicate with said cutout (31) and a conical recess (34) defined to align with said first screw hole (52) of said base mold (50) thereby allowing a first screw (53) to be inserted through said first screw hole (52) to abut said first mold (30) at a bottom face defining said conical recess (34);a pair of rails (43) formed to correspond to said pair of tracks (32) of said first mold (30) and a V-shaped path (44) defined to correspond to said second screw hole (33); anda second screw (35) provided to be inserted through said second hole (33) and into said V-shaped path (44) after a second mold (40) is received in said first mold (30).