Method for manufacturing inflated tire

Abstract

The invention provides a method for manufacturing an inflate tire. In a process of forming a green tire of a tire by using a mold core, tire bead wires can be directly pasted on the mold core in a spiral manner. The method of manufacturing the inflated tire (1) comprises a tire bead wire winding step, where the tire bead wires (10) are spirally pasted around a tire rotating shaft, on an outer surface of a tire bead portion (4) of an inner lining layer (9) and / or an outer surface of the tire bead portion (4) of a tire core fabric (6A), namely, wire pasting surfaces (S). The tire bead wire winding step comprises a wire fixing step, where winding starting ends (10e) of the tire bead wires are fixed on the wire pasting surfaces (S); and a wire spiral-winding step, where, by rotating the mold core (N) around the tire rotating shaft, the tire bead wires are pasted on the wire pasting surfaces (S) along the tire periphery at a press position (T) pressed by a press roller (20), and the tire rotating shaft of the mold core (N) is inclined so that the press position is changed towards the tire radial outer side of the mold core (N).

Description

technical field [0001] The present invention relates to a method of manufacturing a pneumatic tire in which a bead core is formed by directly affixing a bead wire to the core in a spiral form in a method of forming a raw tire tire using a core. Background technique [0002] Conventionally, a method of manufacturing a pneumatic tire has been proposed in the following Patent Document 1, such as Figure 12 As shown, this method uses a core N having an outer peripheral surface that approximates the shape of the inner surface of the tire when the internal pressure is filled (hereinafter referred to as "core method"). In this core construction method, the inner liner 9, inner and outer apexes 8i, 8o, carcass cord 6A, bead core 5, belt layer 7, tread rubber 2G and The raw tire 1a is molded with the side rubber 3G and the like, and the green tire 1a is vulcanized together with the core N. This method has the advantage of improving the uniformity of the pneumatic tire 1 since the te...

AI Technical Summary

Problems solved by technology

[0004] However, since the diameter of the wound wire body 5a varies depending on the size of the tire, the above-mentioned method needs to prepare a plurality of jigs for each tire size.

In addition, when the size of the tire to be manufactured is changed, it is necessary to replace the jig

Therefore, the conventional core method has a problem that the manufacturing cost is high.

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