| 摘要 |
<P>PROBLEM TO BE SOLVED: To facilitate manufacturing work of a resin-made gear by surely taking out the resin-made gear after being molded from a molding chamber. <P>SOLUTION: A recessed and projecting part 35 for molding gear tooth which parallely extends in the axial direction is provided on the inner peripheral surface of the molding chamber 34 of a fixed mold 32, and a gear tooth 24a1 is molded by the recessed and projecting part 35 for molding gear tooth on the outer peripheral surface of a gear body 24 formed inside the molding chamber 34. A cylindrical part 24d is molded by a core part 41 provided in a movable mold 33 at one end of the gear body 24 in the axial direction. A recessed and projecting part 42 for holding extending inclined with respect to the axial direction is provided on the outer peripheral surface of the core part 41, and a holding tooth 24e extending inclined with respect to the axial direction is molded by the recessed and projecting part 42 for holding on the inner peripheral surface of the cylindrical part 24d. The gear body 24 is held in the movable mold 33 by the engagement of the recessed and projecting part 42 for molding with the holding tooth 24e. <P>COPYRIGHT: (C)2010,JPO&INPIT |
