Tire Vulcanization Mold and Manufacturing Method Therefor

A manufacturing method for a tire vulcanization mold in which a small groove is formed between an exhaust groove and a blade by embedding the blade in the exhaust groove opening to a tire molding surface of the tire vulcanization mold, and the small gap is linked to an exhaust hole opening to the outside of the mold, the method comprising:

• providing a projection that projects in a thickness direction midway in a vertical direction of the blade;
• providing a communicating portion that extends from below the projection to above the projection and that penetrates the blade in the thickness direction;
• forming the exhaust groove so that the thickness of the exhaust groove is thinner than the thickness of the projection;
• inserting and positioning the bottom end of the blade in the exhaust groove;
• forming the small gap between an upper side portion of the projection of the embedded blade and the exhaust groove by embedding the positioned blade by press fitting in the depth direction into the exhaust groove while expanding the exhaust groove in the thickness direction by the projection;
• and
• linking the small gap and the exhaust hole through the communicating portion.