Forming process of combined and re-fused injection molded part with metal insert

Abstract

The invention discloses a forming process of a combined and re-fused injection molded part with a metal insert. The forming process comprises the following steps that firstly, injection molding is conducted to form multiple plastic assemblies independently, and all the plastic assemblies are combined and assembled to form a storage cavity capable of containing the metal insert; secondly, the metalinsert and the plastic assemblies are combined to form an assembly, wherein the assembly and a designed product are of the consistent structure; and thirdly, heating and pressurizing are conducted onthe assembly in a mold, and therefore the contact surfaces of all the plastic assemblies can be fused to form an integral plastic part, and the injection molded part with the metal insert is obtainedafter cooling. By means of the forming process, the problems of bubbles and turbulent flow appearing in the direct embedding forming process of an existing insert type plastic part can be effectivelyavoided, the forming efficiency is greatly improved, the production efficiency is improved, the cost is reduced, and the product quality is improved.

Description

technical field [0001] The invention belongs to the technical field of molding plastic parts with metal inserts, and in particular relates to a combined and refused injection molded parts molding process with metal inserts. Background technique [0002] In the past, the method of inserting metal parts into plastics was to directly open a plastic insert injection mold (Insert mold), and place the metal parts in the cavity of the metal mold for plastic insert injection. The molten plastic directly fills the mold cavity through the pressure output by the injection screw, and covers the metal parts. After cooling, it forms a single part and takes it out of the mold cavity. The molding process is as follows: figure 1 shown. figure 1 Shown is the molding process of embedded injection of metal parts in the prior art, which has the following defects: [0003] 1) The metal covered by plastic is incomplete, and the plastic cannot be tightly bonded to the metal part due to air bubble...

AI Technical Summary

Problems solved by technology

[0003] 1) The metal covered by plastic is incomplete, and the plastic cannot be tightly bonded to the metal part due to air bubbles and turbulence, and the whole part contains air bubbles or even separates;

[0004] 2) The speed of injection molding needs to be slowed down. Metal parts are easy to absorb heat when placed in the mold and affect the mold temperature. It is necessary to wait for the mold temperature to balance, and the processing time will slow down;

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