Mold for injection molding of plastic product

The utility model discloses a mould for injection molding of plastic products, which comprises a sprue bush, a glue inlet part at the lower part of the sprue bush penetrates through an upper mould plate and extends into a runner in an upper mould frame, a heating jacket is sleeved on the outer side of the glue inlet part, a heat exchange wire is arranged on the inner side of the heating jacket, a one-way valve body is arranged at the bottom end of the glue inlet part, and the one-way valve body is connected with the heating jacket. And a discharge hole of the one-way valve body corresponds to a glue inlet in the mold core and is communicated with the forming cavity through the glue inlet. According to the utility model, a molten material is injected into the molding cavity in the mold core through the sprue bush, and when the molten material passes through the long-distance runner part, the glue inlet part and the heating sleeve are at a higher temperature under the heating action of the heat exchange wires,