Patent ID: 7726966

Claim:
A mold unit, comprising: a first mold module; a second mold module adjacent to the first mold module, each of the first mold module and the second mold module comprising: a fixed mold and a movable mold capable of moving toward and away from the fixed mold, the fixed and movable molds configured to form a plurality of shaping chambers therebetween when the fixed and movable molds are in a closed position, the fixed mold defining a main runner having an inner end capable of communicating with the shaping chambers for supplying molten material into the shaping chambers; and two parallel guiding structures each extending through both the first mold module and the second mold module, the fixed molds respectively located at two opposite ends of the mold unit and the movable molds located in a middle of the mold unit such that the first and second mold modules are arranged symmetrically opposite each other, the movable molds of the first and second mold modules capable of moving toward or away from the fixed molds of the first and second mold modules by sliding along the guiding structures.