发明名称 |
MOLD FOR INJECTION-MOLDING A GOLF BALL, AND GOLF BALL MANUFACTUING METHOD |
摘要 |
The invention provides a mold for injection-molding a golf ball, which mold has a cavity inner wall with a vertical diameter connecting both poles in a vertical direction thereof that is longer than a horizontal diameter connecting both poles in a horizontal direction thereof. A method of manufacturing golf balls using such a mold is also provided. The use of this mold eliminates molding problems that arise when molding the outermost cover layer of a golf ball, enabling the cover to be stably molded and also making it possible to easily and reliably obtain golf balls of high symmetry in which a cover of uniform thickness has been formed. |
申请公布号 |
US2014175699(A1) |
申请公布日期 |
2014.06.26 |
申请号 |
US201213722460 |
申请日期 |
2012.12.20 |
申请人 |
BRIDGESTONE SPORTS CO., LTD. |
发明人 |
KASASHIMA Atsuki;MOTEGI Yoshio |
分类号 |
B29D99/00 |
主分类号 |
B29D99/00 |
代理机构 |
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代理人 |
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主权项 |
1. A mold for injection-molding a golf ball, comprising a plurality of mold sections which have at least a parting surface that is based on a golf ball equator-based mold parting line and removably mate to form an interior cavity for molding the golf ball, the cavity having an inner wall with a plurality of dimple-forming protrusions provided thereon,
wherein at least four resin gates are formed along the parting surface that is based on a golf ball equator-based mold parting line, and the inner wall has a vertical diameter connecting two poles of the cavity in a vertical direction thereof and a horizontal diameter connecting two poles of the cavity in a horizontal direction thereof, the vertical diameter being longer than the horizontal diameter. |
地址 |
Tokyo JP |