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Manufacturing method of pneumatic tire

A technology for pneumatic tires and manufacturing methods, applied to tires, other household appliances, household appliances, etc., can solve problems such as unfavorable tire production, and achieve the effects of suppressing unevenness, suppressing the reduction of durability, and suppressing deformation

Active Publication Date: 2016-05-11
SUMITOMO RUBBER IND LTD
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

As a result, inventories of various intermediate parts, etc. are generated, which brings great disadvantages to the production of tires with a strong tendency to produce multiple types and small quantities.

Method used

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  • Manufacturing method of pneumatic tire
  • Manufacturing method of pneumatic tire
  • Manufacturing method of pneumatic tire

Examples

Experimental program
Comparison scheme
Effect test

Embodiment

[0048] Based on the manufacturing method of the present invention using a rigid core, according to the specifications in Table 1, a figure 1 Pneumatic tires (tire size 175 / 65R14) of the internal construction indicated, and the uniformity, durability and entrapped air of each test tire were tested. Also for comparison, if Figure 9 As shown, as Comparative Example 1, a wide-band-shaped ply material was used, and the ply material was wound around a rigid core in the circumferential direction for one turn, and the conventional method of sewing both axial sides of the tire was used to manufacture A tire formed with a belt ply was compared with the examples. In addition, Comparative Examples 2 and 3 and Examples 1 to 3 differ only in the belt width Wt of the cut belt piece, and at the outer end of the belt ply, the side edges of the cut belt piece are butted against each other (De=0). Also, in Comparative Example 4, between the side edges of the belt cut pieces at the outer end o...

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Abstract

The invention discloses a method of manufacturing a pneumatic tire with a rigidity-type core, being able to further improve the uniformity. The belt layer cord fabric forming processes comprises: cutting process: cutting the narrow-band cord thread belt with bandwidth of 10 to 50mm into cutting pieces in a theta angle corresponding to the length direction; splicing process: splicing the cutting pieces on the tire forming surface with the rigidity-type core in a angle being equal to the theta angle corresponding to the circumference of the tire and being a distance from the tire body cord thread successively, thus forming the belt layer cord fabric and making the side edge of adjacent cutting pieces on the tire circumference be abutting jointed outside the belt layer cord fabric and be separated at the center side of the tire surface intervally.

Description

technical field [0001] The present invention relates to a method of manufacturing a pneumatic tire including a belt ply forming process of forming a belt ply by sequentially affixing a belt cut piece to a rigid core via a carcass ply, wherein the belt cut piece is formed from a long Dimensions Narrow strip-shaped cord belts are cut to a certain size. Background technique [0002] In recent years, in order to improve the uniformity of the tire, for example, a method of manufacturing a pneumatic tire having a green tire forming process using a rigid core having an outer shape close to that of the inner cavity of the finished tire has been proposed, by Unvulcanized tire components including a carcass ply and a belt ply are sequentially pasted on the outer surface of the rigid core to form a green tire (see Patent Documents 1 and 2 below). [0003] However if Figure 9 As shown in (A), since the rigid core a has an outer shape close to that of the inner cavity of the tire, the ...

Claims

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Application Information

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Patent Type & Authority Patents(China)
IPC IPC(8): B29D30/10
Inventor 中田典克
Owner SUMITOMO RUBBER IND LTD
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