Patent ID: 7802981
Filing Date: 2010-09-28
Classification: B29C,B29L

Abstract:
1. A mold assembly, comprising: a base, having a plurality of receiving spaces and a plurality of slots, wherein the receiving spaces being associated with the slots are disposed on the base and spaced apart from each other; a device for extracting a mold core comprising; a first gear; a driving apparatus driving the first gear to rotate; a plurality of first racks; and a plurality of transmission assemblies, which are spaced apart from each other along a periphery of the first gear, and disposed between the periphery of the first gear and the first racks, respectively, so as to transform a rotating motion of the first gear to a reciprocating motion of each of the first racks from a first position to a second position, each of the transmission assemblies comprising: wherein each of the first racks and each of the third gears are received in each of the slots and each of the receiving spaces, respectively; a plurality of embedded strips, disposed on two opposite sides defining the slot, and each of the embedded strips is detachable from the respective slot thereof: and a plurality of sleeves, disposed on the receiving spaces respectively, and each of the sleeves is detachable from the respective space thereof.