Injection molding method and mold for plastic product

The invention belongs to the technical field of plastic molding, and particularly relates to an injection molding method and mold for a plastic product. According to the injection molding method of the plastic product, a molding cavity is divided into cavities from the first cavity to the Nth cavity in the first direction, the cavities from the second cavity to the Nth cavity each comprise a connecting cavity and a main cavity, injection molding is conducted on the main cavity of the Mth cavity and the connecting cavity of the (M + 1) th cavity, and the steps are repeated till all the molding cavities are subjected to injection molding. In the whole injection molding process, the core-pulling slide block is not easy to deform, so that the obtained plastic product has better quality and higher yield. According to the injection molding mold for the plastic product, the second mold assembly comprises the main mold and the connecting mold, the second mold assembly is provided with the multiple injection molding p