| 摘要 |
The present invention increases tire formation precision and is a tire manufacturing method, which comprises a step (S1) for forming a green tire (Tn) on the outer surface (S) of a rigid inner ring (1) and a vulcanization step (S2) for vulcanizing the green tire (Tn). The rigid inner ring (1) comprises: an inner ring body (3), which is obtained from multiple segments (4); a core (5), which substantially binds the various segments (4); and an outer diameter-adjustment means (33) for changing the outer diameter (D1) of the core (5) by changing the temperature of the core (5). Moreover, the rigid inner ring (1) performs changes such that by expansion of the outer diameter (D1) of the core (5), the various segments (4) move outward in the radial direction of the tire and gaps (G) between the segments (4) are enlarged, while by reducing the outer diameter (D1) of the core (5), the various segments (4) move inward in the radial direction of the tire and the level differences (R) on the outer surface (S) between adjacent segments (4) increase. The vulcanization step (S2) comprises an adjustment step (S21) for adjusting the outer diameter (D1) of the core (5) using the outer diameter adjustment means (33) so that the gaps (G) and the level differences (R) are within a previously established range. |
