Production method for glasses with secondary-injected nose support and structure of glasses

Abstract

The invention relates to a production method for glasses with a secondary-injected nose support and a structure of the glasses and discloses a production technical method for the glasses with the nose support and a glasses structure manufactured by the technical method. The method comprises the following steps of (1) performing disposable injection on a glasses framework raw material in a glasses framework mold at the temperature of 150-220 DEG C to form a glasses framework with a nose support fixing convex block, and cooled-molding and shaping the glasses framework; (2) arranging the nose support fixing convex block of the molded glasses framework at a position corresponding to a nose support mold, performing secondary injection on a nose support raw material at the temperature of 150-220 DEG C to form a nose support, injecting the nose support on the convex block of the glasses framework, and performing cooled and fixed molding on the nose support; (3) injecting glasses legs on the glasses leg mold, and cooled-molding and demolding the glasses legs; and (4) assembling the glasses framework and the glasses legs to form a finished product. By adopting secondary injection, the nose support and the glasses framework achieve an extremely good fixing effect; furthermore, the labor cost is saved, and the efficiency is improved.

Description

technical field [0001] The invention belongs to the field of spectacles, and mainly relates to a production process and structure of spectacles with nose pads. technical background [0002] In the prior art, the nose pads of plastic spectacle frames are generally integrally formed on the frame, and the material properties are the same as those of the frame. Since the material properties of the spectacle frames are harder, the hardness of the nose pads will also be higher. That is to say, there will be a sense of pressure on the bridge of the nose when wearing it, which is uncomfortable, and long-term wearing will cause indentations. At present, there are also nose pads that are made of soft materials, which will relieve the pressure on the bridge of the nose when worn, but the nose pads and the frame are formed separately, and must be fixed on the frame by glue or locking screws. The disadvantage is that the installation is complicated and it is very easy to fall off. Con...

AI Technical Summary

Problems solved by technology

[0002] In the prior art, the nose pads of plastic spectacle frames are generally integrally formed on the frame, and the material properties are the same as those of the frame. Since the material properties of the spectacle frames are harder, the hardness of the nose pads will also be higher. That is to say, the bridge of the nose will feel oppressive and uncomfortable when worn, and long-term wearing will cause indentations

At present, there are also nose pads that are made of soft materials, which will relieve the pressure on the bridge of the nose when worn, but the nose pads and the frame are formed separately, and must be fixed on the frame by glue or locking screws. The disadvantage is that the installation is complicated and it is very easy to fall off

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