Manufacturing method of pneumatic tire

A technology of a pneumatic tire and a manufacturing method, which can be applied to tires, other household appliances, household appliances, etc., and can solve the problems such as the decrease of the detachability of the rigid core a, and achieve the effect of preventing peeling and improving the detachability

Active Publication Date: 2014-04-02
SUMITOMO RUBBER IND LTD
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

Due to such a large friction, the rubber strip g forming the lining d of the inner cavity surface h tends to be peeled off, and there is a problem that the detachability of the rigid core a tends to decrease.

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

[0070] Tires using the rubber strips shown in Table 1 were produced based on the production method of the present invention, and the detachability of the rigid core and the productivity of the inner liner were evaluated. Also, for comparison, as in Figure 11 As shown in (a), the same evaluation was performed on tires formed by adhering rubber strips in a spiral shape from the inner side toward the outer side in the tire radial direction to form an inner liner. Among them, the common specifications are as follows.

[0071] Tire size: 235 / 40R19

[0072] The number of sectors of the rigid core: 8

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Abstract

The present invention provides a manufacturing method of a pneumatic tire, which may improve the removal nature of a rigidity core. The manufacturing method of the pneumatic tire makes the pneumatic tire by means of a core shaping method. The manufacturing method includes: in the raw tyre shaping process (S1), pasting tyre units on the outside surface (18) of rigidity mold core (10) to generate raw tyre (1L). In the vulcanization process (S2), performing vulcanization on the raw tyre (1L). In the dismounting rigidity mold core process (S3), it dismounts rigidity mold core (10) from the vulcanized tyre (1). The raw tyre shaping process (S1) includes lining shaping process (S11), shaping a least one pair of tire bead (18c) from the outside surface (18) of the rigidity mold core (10), making overlapping between the lateral margins (24t) of zonal rubber stripe (24) and pasting the zonal rubber stripe (24) from outside tyre to inner tyre as heliciform shaping. Therefore, it forms the side area (9c) of lining (9).

Description

technical field [0001] The present invention relates to a method of manufacturing a pneumatic tire capable of improving the detachability of a rigid core. Background technique [0002] In recent years, in order to improve the uniformity of tires, it has been proposed to manufacture pneumatic tires using a rigid core having an outer surface that shapes the inner cavity surface of the tire (see Patent Document 1 below) . For example, a plurality of sectors are connected along the tire circumferential direction to assemble a rigid core. By moving each segment of such a rigid core sequentially inward in the tire radial direction, each segment can be detached from the pneumatic tire. [0003] In the method of manufacturing a pneumatic tire using a rigid core, first, a green tire forming step is performed in which a tire component is pasted on the outer surface of the rigid core to form a green tire. Next, a vulcanization step is implemented in which the green tire is vulcanize...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): B29D30/16B29D30/10
Inventor 坂本雅之
Owner SUMITOMO RUBBER IND LTD
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