| 摘要 |
<p>PROBLEM TO BE SOLVED: To facilitate mold releasing after molding by separably connecting a specific number of segments each protruded with at least one lug on a cavity forming face to form a spherical cavity. SOLUTION: This golf ball injection molding die is formed with a lower die 1 and an upper die of the same type, and a spherical cavity 2 is formed with at least six segments 3. The lower die 1 is formed with at least three separable side segments 3a divided at three uniformly distributed positions separated by 120 deg. from each other along the peripheral direction of a die equatorial plane P. At least one lug 4 is protruded on the inner face of each side segment 3a, at least three lugs 4 on the lower die 1, and at least six lugs 4 on the whole die. The lugs 4 are preferably protruded toward the center of the cavity 2, and the mold releasing of a molding can be facilitated.</p> |
