外直径相近同花纹轮胎活络模花纹块共用的探讨

Common tread patterns block of segmented mold for tires with similar overall diameter and same tread patterns

以２９５／７５Ｒ２２－５ 轮胎与２７５／８０Ｒ２２－５ 轮胎和１０Ｒ２２－５ 轮胎与９－００Ｒ２０ 轮胎为例，说明外直径相近的轮胎共用活络模花纹块和模壳的条件。当充气外直径Ｄ与被套用活络模的外直径Ｄｍ 满足０－９９５ ０ Ｄｍ ＜ Ｄ＜１－０１０ １ Ｄｍ 时，可以考虑进行活络模的套用。套用已有活络模，一般可节约模具加工费用的２／３，并缩短２／３模具加工周期。

The using conditions of the common tread patterns block and shell for the tires with similar overall diameter are described giving 295/75R22 5 to 275/80R22 5 and 10R22 5 to 9 00R20 as examples.The indiscriminate application of segmented mold can be considered as the over all diameter of inflated tire D and the overall diameter of indiscriminately applied mold D m meet0 995 0 D m< D <1 010 1 D m.The mold processing cost of indiscriminately applied mold is reduced by two thirds and its processing cycle is also reduced by two thirds.