MOLD FOR TIRE VULCANIZATION, RAW COVER, PNEUMATIC TIRE AND ITS MANUFACTURING METHOD,申请号JP20140246644-传众专利搜索

MOLD FOR TIRE VULCANIZATION, RAW COVER, PNEUMATIC TIRE AND ITS MANUFACTURING METHOD

申请公布号：JP2016107489(A)

申请号：JP20140246644

申请日期：2014.12.05

申请公布日期：2016.06.20

申请人：

SUMITOMO RUBBER IND LTD

发明人：TODA YOSHIHIRO

分类号：B29C33/02;B29C33/10;B29C35/02;B29D30/06;B60C11/00

主分类号：B29C33/02

摘要：PROBLEM TO BE SOLVED: To provide a pneumatic tire vulcanization molding technique in vulcanization molding for a pneumatic tire with an SOT structure whereby the occurrence of vent hole spew and poor tire appearance is prevented as in the case of vulcanization molding for a pneumatic tire with a TOS structure.SOLUTION: Provided is a mold for tire vulcanization used in vulcanization molding for a pneumatic tire with a side wall over tread structure. In the mold for tire vulcanization, a plurality of rows of spring vents are arranged in the range of 0 to 15 mm from an inflection point at the tread shoulder position of a shoulder portion to near the center of a tread. Provided is a raw cover for the pneumatic tire with the side wall over tread structure. The raw cover, when set in the mold for tire vulcanization, is molded in such a manner that the hoisting position of a side wall is positioned from 2 to 15 mm from the lowest end of the hole in the spring vents.SELECTED DRAWING: Figure 5