Earpiece moulding method by implanting plastic into metal fittings

Abstract

The invention discloses an earpiece moulding method by implanting plastic into a metal fittings. The method comprises the steps of: (1) putting the metal fittings into a cavity of a mould; (2) arranging an thimble on the mould, wherein the thimble stretches into the cavity and supports the metal fittings, in this way, the metal fittings is suspended in the cavity; (3) injecting fused plastic into the cavity, enabling the thimble to contract and supporting the metal part by the cured plastic when the fused plastic is close to the thimble; (4) keeping on injecting the fused plastic till the whole cavity is full of the fused plastic and the metal part is enveloped; and (5) cooling, opening the mould, and de-moulding so as to obtain the moulded earpiece. With the adoption of the method, the moulding of the earpiece is finished by one plastic injection process, the moulding time is saved effectively and the production efficiency is enhanced; the enveloping strength of the moulded plastic to the metal part is higher, the undesirable effects of burst, separation, and the like, are avoided, so that the whole quality of the product is stable, and the manufacturing cost is reduced simultaneously.

Description

technical field [0001] The invention relates to the technology in the field of spectacles, in particular to a method for forming spectacle temples in which plastics are implanted into metal fittings. Background technique [0002] Spectacle temples are an important part of glasses. Usually, for various reasons, such as strengthening the strength of the temples or making it easier to connect the temples to the frame, metal fittings need to be implanted when the temples are formed. Please refer to Figure 1 to Figure 3 It is a schematic diagram of the molding process of traditional plastic implanted metal fittings. The molding process includes the following steps: [0003] (1) First make the half-mold 10' of the glasses feet, and the half-mold 10' is designed with a concave position 11' for the metal fitting 20'; [0004] (2) if figure 1 As shown, the half mold 10' is placed in the lower mold 101' of the mould; [0005] (3) if figure 2 As shown, the metal fitting 20' is fi...

AI Technical Summary

Problems solved by technology

[0012] In view of this, the present invention aims at the deficiencies in the prior art, and its main purpose is to provide a molding method for eyeglass temples with plastic implanted into metal fittings, which can effectively solve the problem of time-consuming, low efficiency, and product quality problems in the existing methods for molding eyeglass temples. Instability and high cost

[0013] Another object of the present invention is to provide a molding method of plastic implanted metal fittings, which can effectively solve the problem that the radian and curvature of the metal fittings cannot be adjusted arbitrarily in the existing molding method of spectacle temples, resulting in inconvenient molding and poor product quality. single type of problem

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