Rubber injection method containing metal insert and mold

Abstract

The invention relates to a rubber injection mold containing a metal insert. The rubber injection mold is used for carrying out injection molding on a rubber injection molded part which is composed ofthe annular metal insert and the annular rubber part; the mold comprises an upper mold and a lower mold, the upper mold is provided with an upper mold concave part for containing the metal insert andan upper mold rubber groove for forming a rubber part, the lower mold is provided with a lower mold boss penetrating into the central hole of the metal insert, the lower mold is arranged in the uppermold concave part, and a first rubber overflow groove and a second rubber overflow groove are formed in the inner side and the outer side of the upper mold rubber groove respectively. The invention further provides a method for carrying out injection molding by utilizing the mold. The first rubber overflow groove and the second rubber overflow groove are arranged, so that sealing rings can be formed around the inner side and the outer side of the upper mold rubber groove through the rubber overflow phenomenon, overflow waste materials are used for sealing and automatic size adjustment, waste and burrs are reduced, and important parts in the overflow protection mold can also be used, such as a sliding block, a guide column and the like, and the waste materials can be prevented from enteringa precise part to cause the damage of the mold.

Description

technical field [0001] The invention relates to an injection molding process and the field of molds, in particular to a rubber injection molding method and a mold containing metal inserts. Background technique [0002] In the insert molding technology, especially in the production and application of electronic equipment parts such as mobile phones, the rubber injection molding technology of metal inserts is often used, which usually pre-places the metal inserts in the mold , Inject rubber into the mold through an injection molding machine to form an integral body with the metal insert. [0003] figure 1 Shown is a three-dimensional schematic diagram of a rubber injection molded part with a metal insert, figure 2 yes figure 1 Cutaway view of the part shown, figure 1 and figure 2 The part 1 shown is composed of a metal insert 11 and a rubber part 12. The metal insert 11 is an annular metal sheet, and the rubber part 12 is also a ring structure, which is tightly integrat...

AI Technical Summary

Problems solved by technology

Therefore, using Figure 3-4 When the mold is processed, the problem of glue overflow is difficult to eliminate. The overflowing burr needs to be manually removed, which increases the process and reduces the efficiency. The overflowing waste also causes waste, and the overflowing waste may enter the important part of the mold, such as sliding Blocks, guide posts, etc., easily cause mold damage

Images