The invention provides a tire mold (56) capable of realizing optimization of ground contact surface shape and ground contact pressure distribution. The mold (56) is provided with a tread forming surface (64) for shaping the tread surface (22). The tread-forming surface (64) is provided with ridges (74) that form the circumferential grooves (42), and land-surface-forming sections (76) that form land surfaces (46). Among the three land surface forming portions (76) arranged with the ridges (74) therebetween in the axial direction, the land surface forming portion (76) located between the two ridges (74) is a curved land surface forming portion (76B). The contour of the curved land surface forming portion (76B) is represented by one or more arcs. The boundary between the reference side surface (80a) of the ridge (74) and the curved land surface forming portion (76B) is a reference boundary point (BBm), and the reference boundary point (BBm) is positioned further inward than the reference forming surface (FBL) of the tread forming surface (64).
本发明提供可实现接地面形状及接地压分布的优化的轮胎用模具(56)。模具(56)具备对胎面表面(22)进行造型的胎面形成面(64)。胎面形成面(64)具备形成周向沟(42)的凸条(74)、和形成陆地面(46)的陆地面形成部(76)。在轴向上隔着凸条(74)排列的、三个陆地面形成部(76)中的、位于两个凸条(74)之间的陆地面形成部(76)是弯曲陆地面形成部(76B)。弯曲陆地面形成部(76B)的轮廓用一个或多个圆弧表示。凸条(74)的基准侧面(80a)与弯曲陆地面形成部(76B)的边界是基准边界点(BBm),基准边界点(BBm)位于比胎面形成面(64)的基准形成面(FBL)靠内侧的位置。
Tire mold, tire manufacturing method, and tire
轮胎用模具、轮胎的制造方法以及轮胎
2022-05-27
Patent
Electronic Resource
Chinese