| 摘要 |
The present invention relates to a pin for molding a stud hole which is installed in a tire vulcanizing mold. By providing a stud pin in which the lower end of a guide (3) is formed with two or more partition bodies (31, 32) in order for the lower end to be split towards outside and a space unit (33) between the partition bodies (31, 32) is filled with fillers (4) which have large coefficient of expansion, the lower part of the stud pin can be split same amount even when a hole for installing the stud pin is expanded during vulcanization so that installation state of the stud pin can be maintained to be tight. Therefore, untie of the stud pin can be prevented and depth of the stud hole of the tire cannot be deepen and break away of the stud stuck in the stud hole during driving can be reduced. |
