| 摘要 |
<p><P>PROBLEM TO BE SOLVED: To prevent, by reducing the thrust/pull-out resistance of the blades arranged on the sector molds, the deformation, damage, etc. of the blades, molds, flat part of the tread and the like. <P>SOLUTION: The vulcanizing mold is equipped with a plurality of the sector molds 1 for vulcanizing the tread part of a green tire and a plurality of the blades 2 for forming fine grooves that protrude from the inner peripheral surface of each sector mold 1 to the inside. The mold is characterized by the following: the intersectionθbetween the line L and the radial line segment R is made to be smaller than the intersectionθ<SB>1</SB>between the normal line N and the radial line segment R. Herein, the radial line segment R is the one that extends, in the cross section of the peripheral direction of the sector mold 1, through the middle point C of the inner peripheral surface of the sector mold 1 and the center O of the space surrounded by each sector mold 1, the line L is the one that extends through the base of the projection and tip of the projection of each blade 2 arranged with the radial line segment R between, and the normal line N is the one that is erected on the base of the projection of the blade 2. <P>COPYRIGHT: (C)2008,JPO&INPIT</p> |
