Air hole sleeve for tire mold

The invention relates to an air hole sleeve for a tire mold. The air hole sleeve comprises a sleeve body and an inner cavity located in the sleeve, wherein the inner cavity is of a taper structure and the inlet of the inner cavity is provided with a chamfer. The air hole sleeve has the beneficial effects that rubber whiskers formed after a rubber compound flows into the air hole sleeve are conical bodies with gradually decreasing diameters, and the rubber whiskers are easy to separate from the air hole sleeve, hard to fracture and reduces the influence of decreased internal diameter of the air hole sleeve after being pressed into the air hole sleeve compared with cylindrical rubber whiskers formed after a rubber compound flows into a conventional air hole sleeve; and due to the internal diameter of the air hole sleeve gradually decreases, blocking matters can be easily sucked out in virtue of vacuum, so cleaning is convenient. 本发明涉及种轮胎模具用气孔套。所述气孔套包括套体，位于所述套体内的内腔，所述内腔为锥形结构。所述内腔的进口处设有倒角。有益效果：胶料流入本发明气孔套后形成的胶须为直径