Pneumatic tire molding method and molding apparatus

A technology of pneumatic tires and tires, which is applied to tires, other household appliances, household appliances, etc., can solve the problems of surface deformation and sticking difficulties of sidewall parts, and achieve the effect of reliable maintenance

Inactive Publication Date: 2012-12-12
THE YOKOHAMA RUBBER CO LTD
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

In order to adhere to the sidewall parts, it is effective to press the sidewall parts strongly, but if the pressing force is too large, there will be a problem that the surface shape of the unvulcanized sidewall parts will be deformed.
Therefore, it is difficult to bring the sidewall member into close contact with the tire components provided on the outer peripheral surface of the rigid inner mold while preventing the deformation of the surface shape of the sidewall member.

Method used

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  • Pneumatic tire molding method and molding apparatus
  • Pneumatic tire molding method and molding apparatus
  • Pneumatic tire molding method and molding apparatus

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Effect test

Embodiment Construction

[0048] Hereinafter, the method and apparatus for forming a pneumatic tire of the present invention will be described based on the illustrated embodiment.

[0049] Such as figure 1 , figure 2 As an example, the pneumatic tire forming apparatus 1 of the present invention (hereinafter referred to as the forming apparatus 1) is an apparatus used when forming a green tire G on the outer periphery of the rigid inner mold 11. Tire components are sequentially laminated on the outer peripheral surface of the rigid inner mold 11 to complete the green tire G.

[0050] in image 3 On the outer peripheral surface of the rigid inner mold 11 illustrated in the example, the inner liner 16 and the carcass material 17 are laminated and arranged in this order. The carcass material 17 is erected between a pair of bead rings 18, and the bead rubber 19 is folded back around the bead ring 18 from the inside to the outside.

[0051] The rigid inner mold 11 has a cylindrical shape and is composed of a plur...

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Abstract

The invention provides a pneumatic tire molding method and a molding apparatus. An annular recess (3) formed in an annular holder (2) is arranged side-by-side with and made to cover an area (T) corresponding to a tire side section of a carcass material (17) arranged on an external circumferential surface of a circular-cylindrically shaped rigid inner mold (11) having substantially the same shape as a profile of an internal circumferential surface of a tire to be manufactured. Air is sucked from a space (S) between the recess (3) and the carcass (17) covered by the recess (3) so as to reduce a pressure in the space (S). A holding part (4) is arranged inside the recess (3) and has a holding surface (5) having the same shape as a surface of a side member (20). The holding part (4) holds the surface of the side member (20) and presses the side member (20) against and attaches the side member (20) to the area (T) under the pressure-reduced state. Remaining tire component members are attached to complete a green tire (G).

Description

Technical field [0001] The present invention relates to a method and apparatus for forming a pneumatic tire. More specifically, it relates to a sidewall member that can be attached to a tire component provided on the outer peripheral surface of a rigid inner mold while preventing the surface shape of the sidewall member from being deformed. The method and apparatus for forming a pneumatic tire of the sidewall component. Background technique [0002] Various manufacturing methods of pneumatic tires have been disclosed in which a green tire is formed on the outer peripheral surface of a rigid inner mold made of metal, and the formed green tire and the rigid inner mold are arranged together in the vulcanization mold to perform vulcanization (for example, Refer to Patent Document 1). According to the manufacturing method using such a rigid inner mold, since the green tire has a shape close to that of the tire after vulcanization, the load on the green tire generated during vulcaniza...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): B29D30/08
CPCB29D30/72
Inventor 高田昇
Owner THE YOKOHAMA RUBBER CO LTD
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