Manufacturing method of insert molding

Abstract

The invention provides a manufacturing method of insert moldings. The manufacturing method of an insert molding comprises the following steps: providing an injection mould, wherein the injection mouldcomprises a female mould and a male mould which is matched with the female mould, one of the female mould or the male mould is provided with a mould cavity, and the other one is provided with a mouldcore and a sprue which penetrates into the mould core; providing a special material insert, wherein the special material insert is provided with a through hole; putting the special material insert onthe mould core, aligning the through hole and the sprue and forming a passage; combining the female mould and the male mould, forming a mould chamber by the mould cavity and the mould core and positioning the special material insert into the mould chamber; and injecting molten thermoplastic plastics into the mould chamber from the passage, forming a plastic component after cooling the molten thermoplastic plastics, combining plastic component and the special material insert into a whole and forming the insert molding .

Description

technical field [0001] The invention relates to an injection molded product, in particular to an insert molded product. Background technique [0002] Insert molding (insert molding) refers to the injection of plastic after loading pre-prepared inserts of different materials into the mold. The heterogeneous material insert is generally metal or inorganic solid, etc., and the molten plastic is bonded and solidified with the heterogeneous material insert to form an integrated product. see figure 1 , as shown because the position of the gate 12 of the mold 10 and the insert 20 of different materials are staggered. Therefore, the plastic impact force generated during insert molding injection will make the insert 20 of different material float, so that the molten plastic is easy to squeeze into the space between the insert 20 of different material and the mold core 14, resulting in poor molding quality of the insert molding product. High, such as overflow glue failure. Conten...

AI Technical Summary

Problems solved by technology

Therefore, the plastic impact force generated during insert molding injection will make the insert 20 of different material float, so that the molten plastic is easy to squeeze into the space between the insert 20 of different material and the mold core 14, resulting in poor molding quality of the insert molding product. High, such as overflow glue failure

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