The invention discloses a recovering and manufacturing process for
polyurethane shoe materials. The process includes the following steps that firstly, crushing is carried out, specifically, waste
polyurethane shoe materials are poured into a strong
crusher to be crushed; secondly, stirring is carried out, specifically, waste particle materials are poured into a low-speed heating stirrer,
rosin powder and auxiliaries are added and stirred, and
polyurethane injection molding materials can be obtained under the condition of stirring for 80-100 minutes at the stirring temperature of 100-110 DEG C; the weight of the
rosin powder accounts for 0.8%-1.2% of the total weight, the auxiliaries are dioctyl
phthalate, and the weight of the auxiliaries accounts for 1%-1.3% of the total weight; and thirdly, injection molding is carried out, specifically, the polyurethane injection molding materials are subjected to injection molding through a disc
injection molding machine, so that the polyurethane shoe materials are obtained. Compared with the prior art, the waste polyurethane shoe materials are completely recycled, resources are effectively utilized, a large number of other auxiliary components are not needed, and the
recovery cost is low; the process has the advantages that the
recovery cost is low, and
recovery products are soft. The invention further discloses a polyurethane-shoe-material injection-molding feeding mechanism used for achieving injection molding of polyurethane.