Sole preparation method and outsole mold in three-opening mold

The invention relates to a preparation method of a shoe sole, in particular to a three-opening mold middle-outsole mold. The preparation method comprises the following steps: (1) heating the three-opening mold middle-outsole mold with a vacuum suction function; (2) thermosetting polyurethane is added into an outsole mold in the three-opening mold, a bonding layer is arranged, and the mold is closed; (3) opening the mold after curing to obtain an outsole; and (4) sucking a film on the outsole, pouring the raw materials of the insole, closing the mold, curing and demolding to obtain the sole. According to the method, the sole containing the outsole and the midsole can be prepared without replacing a mold, the process is simple, the production efficiency is high, the cost is low, and the environmental protection property is good. 本发明涉及一种鞋底的制备方法、三开模中大底模具，所述制备方法包括如下步骤：(1)将具备吸真空功能的三开模中大底模具加热；(2)在所述三开模中大底模具中添加热固性聚氨酯，设置粘接层，合模；(3)固化后开模，得到大底；(4)在大底上进行吸膜，再浇注中底的原料，合模，熟化后脱模，得到鞋底。本发明所述方法无需更换模具即可实现制备同时含大底和中底的鞋底，工艺简单，生产效率高，成