Tire vulcanization device and method

Patent metadata

Field	Value
Publication number	US-12459222-B2
Application number	US-201917310711-A
Country	US
Kind code	B2
Filing date	Dec 2, 2019
Priority date	Feb 25, 2019
Publication date	Nov 4, 2025
Grant date	Nov 4, 2025

Abstract

In a tire vulcanization device and method, when a mold is closed, dividing walls disposed on an outer circumferential side of a container ring form a space with a container and hermetically block communication between the inside and outside of the container, and a center vent path communicating vertically through a center mechanism, a plurality of mold interior vent paths formed in the mold at intervals in the circumferential direction in a plan view, a container interior vent path formed in the container components and communicating between an opposing surface and a space, and the space are made to be in communication, and by an air suction machine disposed outside the container and connected to a lower end portion of the center vent path, unnecessary air present inside the mold is suctioned through the mold interior vent path and the container vent path that are in communication.

First claim

The invention claimed is:

1 . A tire vulcanization device having a center mechanism inserted vertically through a cylindrical vulcanization bladder, a vulcanization mold installed to surround the center mechanism, and a vulcanization container to which the vulcanization mold is attached, comprising:
dividing walls that are disposed on an outer circumferential side of a container ring forming the vulcanization container, form a space with the vulcanization container, and hermetically block communication between inside and outside of the vulcanization container in a closed state of the vulcanization mold; a center vent path vertically extending through a center post forming the center mechanism; an air suction machine disposed outside the vulcanization container and connected to a lower end portion of the center vent path; a mold interior vent path extending in the vulcanization mold to communicate between a tire molding surface and an attachment surface that is respective to a container component forming the vulcanization container; and, a container interior vent path extending in the container component to communicate between an opposing surface opposing the attachment surface and the space, a plurality of the mold interior vent paths being formed at intervals in a circumferential direction in a plan view and, when the vulcanization mold is closed, the center vent path, each of the mold interior vent paths, the container interior vent path, and the space being in communication.

2 . The tire vulcanization device according to claim 1 , further comprising an air injection machine disposed outside of the vulcanization container and connected to the lower end portion of the center vent path,
wherein the air injection machine injects air between the tire molding surface and a vulcanized tire in the vulcanization mold through the center vent path, each of the container interior vent paths and the mold interior vent path being in communication.

3 . The tire vulcanization device according to claim 2 , wherein when the vulcanization mold is closed, the mold interior vent path and the container interior vent path extend radially about the center vent path in a plan view and are in communication.

4 . The tire vulcanization device according to claim 3 , wherein an annular circumferential groove extending in the circumferential direction on the attachment surface and allowing the plurality of the mold interior vent paths opening to the attachment surface to be in communication, or an annular circumferential groove extending in the circumferential direction on the opposing surface and allowing the plurality of the container interior vent paths opening to the opposing surface to be in communication, is formed.

5 . The tire vulcanization device according to claim 1 , wherein when the vulcanization mold is closed, the mold interior vent path and the container interior vent path extend radially about the center vent path in a plan view and are in communication.

6 . The tire vulcanization device according to claim 1 , wherein an annular circumferential groove extending in the circumferential direction on the attachment surface and allowing the plurality of the mold interior vent paths opening to the attachment surface to be in communication, or an annular circumferential groove extending in the circumferential direction on the opposing surface and allowing the plurality of the container interior vent paths opening to the opposing surface to be in communication, is formed.

7 . A tire vulcanizing method, comprising:
attaching a vulcanization mold to a vulcanization container; disposing a green tire transversely inside the vulcanization mold and installing the vulcanization mold to surround a center mechanism inserted vertically through a cylindrical vulcanization bladder with the vulcanization mold open; and, vulcanizing a green tire with the vulcanization mold closed, the method further comprising: providing dividing walls that are disposed on an outer circumferential side of a container ring forming the vulcanization container, form a space with the vulcanization container, and hermetically block communication between inside and outside of the vulcanization container in a closed state of the vulcanization mold; providing, in the center mechanism, a center vent path vertically extending through a center post; providing, in the vulcanization mold, a plurality of mold interior vent paths extending at intervals in a circumferential direction in a plan view to communicate between a tire molding surface and an attachment surface that is respective to a container component forming the vulcanization container; and, providing, in the container component, a container interior vent path extending in the container components to communicate between an opposing surface opposing the attachment surface and the space, when the vulcanization mold is closed, the center vent path, each of the mold interior vent paths, the container interior vent path, and the space being allowed to be in communication, and by an air suction machine disposed outside the vulcanization container and connected to a lower end portion of the center vent path, air that is present inside the vulcanization mold being suctioned through the mold interior vent path and the container interior vent path that are in communication.

8 . The tire vulcanizing method according to claim 7 , wherein after the green tire is vulcanized, by an air injection machine disposed outside the vulcanization container and connected to a lower end portion of the center vent path, air is injected between the tire molding surface and a vulcanized tire in the vulcanization mold through the center vent path, the mold interior vent path and the container interior vent path that are in communication with the vulcanization mold closed.

Assignees

• Yokohama Rubber Co Ltd

Inventors

• Takahashi Yukihisa

Classifications

• B29D2030/0617

  Venting devices, e.g. vent plugs or inserts · CPC title

• B29C35/02

  Heating or curing, e.g. crosslinking or vulcanizing {during moulding, e.g. in a mould}(cold vulcanisation B29C35/18 {; vulcanising tyres, presses therefor B29D30/0601}) · CPC title

• B29C33/46

  using fluid pressure · CPC title

• B29C33/10

  with incorporated venting means · CPC title

• B29C33/02 Primary

  with incorporated heating or cooling means · CPC title