| 摘要 |
PROBLEM TO BE SOLVED: To provide an injection mold of manufacturing a resin-made propeller fan having good dimensional precision and little imbalance. SOLUTION: The injection mold of manufacturing the resin-made propeller fan having a plurality of wings around a rotary shaft is characterized in that mating parts 3A and 3B both cooperating with each other are mounted in at least a part of the circumference of a portion forming wings of a fixed mold 1 and a movable mold 2. Since the mating parts 3A and 3B eliminate gap and displacement of the molds, it is possible to provide the resin-made propeller fan having good dimensional precision and little imbalance and rotating smoothly. COPYRIGHT: (C)2006,JPO&NCIPI |
