Method of manufacturing a sipe blade
AssigneeBridgestone Corporation
InventorSachiko Kamata
Life of this patent
Estimating the term…
Abstract
Manufacturing of a sipe blade at a low cost and in a short time, and shortening of a manufacturing period and reduction in cost of a tire vulcanizing mold are achieved. A metal wire material is subjected to rolling and molding processing, and subsequently is subjected to heat treatment to form an intermediate material. The intermediate material is cut off and a hole is formed therein, and the sipe blade is thereby manufactured.
Claims13
A method of manufacturing a sipe blade, comprising:
- manufacturing an intermediate material whose cross section in a transverse direction thereof is of a desired shape, said manufacturing comprising:
- rolling a metal wire material serving as a base material;
- heat treating the rolled metal wire;
- and
- passing the rolled and heat treated metal wire material through a die;
- and
- at least one of desired cutting, hole-forming, or bending of the intermediate material to form the sipe blade.
A method of manufacturing a sipe blade used in a tire vulcanizing mold in which a sipe blade for forming a sipe on a surface of a tire is fixed onto a surface of the mold, comprising:
- manufacturing an intermediate material whose cross section in a transverse direction thereof is of a desired shape, said manufacturing, comprising:
- rolling a metal wire material serving as a base material;
- heat treating the rolled metal wire;
- and
- passing the rolled and heat treated metal wire material through a die;
- and
- at least one of desired cutting, hole-forming, or bending of the intermediate material to form the sipe blade used in the tire-vulcanizing mold.
A method of manufacturing a sipe blade which is used in a tire vulcanizing mold for forming a sipe in a tire tread, comprising:
- forming an intermediate member by:
- passing a metal wire through at least one pair of opposing rollers;
- heat treating the metal wire after the wire is passed through said at least one pair of opposing rollers;
- and
- passing the metal wire that has been heat treated through a die to form the intermediate member;
- and
- bending, cutting and/or forming a hole in the intermediate member to form the sipe blade which is to be used in the tire vulcanizing mold for forming the sipe in the tire tread.
Dependencies are inferred from the claim text.