Patent ID: 7845926

Claim:
A mold apparatus comprising: a female mold comprising: at least one female mold unit each comprising a space with an opening and a through hole connecting the space; at least one screw tooth block each mounted in the space of one of the at least one female mold unit and comprising an inserted concavity separating a pair of opposite surfaces respectively and a through hole in the other opposite surfaces, the inserted concavity comprising an inner fastener; a first fastener passing through the through hole of each of the at least one female mold unit and the through hole of each of the at least one screw tooth block to fasten the corresponding screw tooth block in the space of the female mold unit; a male mold combined with the female mold and comprising: at least one male mold unit, corresponding to the at least one female mold unit, each comprising a space with an opening and a through hole connecting with the space; at least one screw tooth block each mounted in the space of each of the at least one male mold unit and comprising an inserted concavity in a pair of opposite surfaces respectively and a through hole in the other opposite surfaces, the inserted concavity comprising an inner screw; a first fastener passing through the through hole of each of the at least one male mold unit and the through hole of the corresponding screw tooth block to fasten the screw tooth block in the space of the male mold unit.