Rubber watchband cold runner flash-free die

The utility model discloses a rubber watchband cold runner flash-free die which comprises an upper die and a lower die, the upper die is arranged above the lower die, the lower die is provided with a lower forming groove, the upper die is provided with an upper forming groove, and the upper forming groove and the lower forming groove form a watchband cavity; and an injection hole is also vertically formed in the upper mold and is communicated with the watchband forming cavity. Feeding is carried out through the injection hole in an injection mode, the problem that flashes are thick due to the fact that feeding is carried out first and then mold closing is carried out is solved, injection is carried out in the mode that mold closing is carried out first and then main material feeding is carried out, and therefore the problem that the flashes are thick can be solved. 本实用新型公开了一种橡胶表带冷流道无飞边模具，包括上模和下模，其中：上模设在下模上方，下模具有下成型槽，上模具有上成型槽，上成型槽和下成型槽组成表带型腔；上模上还竖向开有注射孔，注射孔与表带成型腔连通。通过注射孔以注射的方式进行给料，解决先投料在合模导致的飞边厚的情况，注射采用是先合模后主料