| 摘要 |
A mini plug of a tire vulcanizing mold for preventing an extra trimming of a vent is provided to reduce length of precipitation rubber, and to shorten a precipitation rubber removal process by opening both ends of vertical air outlets up to a lower surface of the mini plug. A mini plug(20) of a tire vulcanizing mold for preventing an extra trimming of a vent comprises a body, a central inlet(22), a horizontal flow path(26), and vertical air outlets(24). The central inlet is formed at the center of an upper end of the body. The horizontal flow path is connected to one end of the central inlet. The both ends of the horizontal flow path are connected to ends of the vertical air outlets, and the other ends of the vertical air outlets are opened up to the lower end of the mini plug. The diameter of the central inlet ranges from 0.9 to 1.1mm, and a groove of the central inlet ranges from 0.9 to 1.1mm. The diameter of the horizontal flow path ranges from 0.4 to 0.6mm. The diameter of the vertical central inlet ranges from 0.9 to 1.1mm. The diameter of the horizontal flow path is narrower than that of the central inlet.
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