Manufacture method for pneumatic tire and rigid core used for the method

A technology of pneumatic tires and rigid cores, applied in the field of rigid cores, can solve the problems of low storage management efficiency, increased storage space, and increased manufacturing costs of core sections c, and achieve the goal of suppressing the reduction in storage management efficiency and facilitating storage Effect

Inactive Publication Date: 2011-08-24
SUMITOMO RUBBER IND LTD
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

[0005] As a result, the types of core section c (rigid core a) are significantly increased, leading to problems such as inefficiency in storage management, increase in storage space, and increase in manufacturing cost of core section c.

Method used

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  • Manufacture method for pneumatic tire and rigid core used for the method
  • Manufacture method for pneumatic tire and rigid core used for the method
  • Manufacture method for pneumatic tire and rigid core used for the method

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Embodiment Construction

[0076] Next, embodiments of the present invention will be described in detail.

[0077] The manufacturing method of the pneumatic tire of the present invention is constituted to include: a green tire forming step S1, such as figure 1 As schematically shown, this process uses a ring-shaped hollow rigid core 10, and the raw tire 1 is formed by sequentially attaching unvulcanized tire components 12 on the outer surface of the rigid core 10; vulcanization process S2, such as figure 2 As schematically shown, in this process, the raw tire 1 and the rigid core 10 are put into the vulcanization mold 11 for vulcanization molding. Examples of the tire constituent member 12 include an innerliner 12a, a carcass cord 12b, a belt 12c, a bead core 12d, a lap rubber 12e, a sidewall rubber 12f, and a tread rubber 12g.

[0078] In addition, since various conventional green tire forming steps and vulcanizing steps using rigid cores can be appropriately adopted as the raw tire forming step S1 ...

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Abstract

The invention aims at realizing type reduction of rigid core as well as improving keeping efficiency, keeping space, and manufacturing cost, and provides a manufacture method for a pneumatic tire and a rigid core used for the method. Wherein the core section of the rigid core is cut in an axial direction of a tire via a cutting surface going through the tire surface forming part, and is formed by a plurality of section sheets, the section sheets comprise: side section sheets at one side and provided with a side forming part at one side of the tire axial direction, side section sheets at the other side and provided with a side forming part at the other side of the tire axial direction, and middle section sheets between side section sheets at the two sides. Via replacing of the middle section sheets with middle section sheets in other sizes and with different tire axial widths, and/or increasing or decreasing number of middle section sheets, adjustment of width of the rigid core is performed according to the size of the air tire.

Description

technical field [0001] The present invention relates to a method of manufacturing a pneumatic tire capable of adjusting the axial width of a rigid core according to the size of the manufactured pneumatic tire, and to a rigid core used in the method. Background technique [0002] In recent years, in order to improve the forming accuracy of the tire and reduce the residual deformation in the tire, the following methods have been proposed (see, for example, Patent Document 1): Figure 12 As shown in (A), use a rigid core a that conforms to the shape of the tire inner cavity surface after vulcanization, and stick the inner liner, carcass ply, belt layer, and sidewall rubber on the rigid core a sequentially. , tread rubber and other unvulcanized tire components to form a green tire t, and put the green tire t into the vulcanization mold b together with the rigid core a, and the rigid core a as the inner mold and the outer mold The tire is vulcanized and molded between the vulcani...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): B29D30/08
Inventor 鸟居知晴
Owner SUMITOMO RUBBER IND LTD
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