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A kind of manufacturing method of 3D curved surface lens

A manufacturing method and curved surface technology, which can be applied to other household appliances, optical components, household appliances, etc., can solve the large number of CNC engraving machines, the lack of forming 3D curved plastic lenses, and the low yield rate of 3D forming glass processing and other problems to achieve the effect of small deformation, low cost and high product hardness

Active Publication Date: 2017-07-07
DONGGUAN HUAQING OPTICAL TECH
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  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

The processing yield rate of 3D shaped glass is low, the overall yield rate is lower than 50%, and the production cannot reach mass production. 3D shaped glass processing requires a large number of CNC engraving machines, and the investment cost is high. The time for 3D forming glass is more than 40 minutes, and the processing efficiency is less than one-fifth of that of ordinary cover glass
Transparent plastic is gradually replacing the dominant position of 3D curved glass. The product has the advantages of light and thin, transparent and clean, anti-fingerprint, anti-glare, hard, and scratch-resistant, but there is no process for molding 3D curved plastic lenses.

Method used

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  • A kind of manufacturing method of 3D curved surface lens
  • A kind of manufacturing method of 3D curved surface lens

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Experimental program
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Effect test

Embodiment Construction

[0034] The present invention will be further described below with reference to the accompanying drawings and in combination with preferred embodiments.

[0035] In some embodiments, the method for manufacturing a 3D curved lens includes the following steps:

[0036] (1) Injection molding step: the molten material is injected from one side of the mold cavity, and when the molten material fills 10% to 40% of the volume of the mold cavity, an auxiliary gas is injected into the mold cavity;

[0037] (2) Compression step: when the molten material fills 45% to 90% of the volume of the mold cavity, the auxiliary gas is discharged, and the inside of the mold cavity starts to be compressed to obtain the 3D curved lens.

[0038] In a preferred embodiment, including:

[0039] Such as figure 2 As shown, the shape of the molded 3D curved lens is a rectangular arc surface, and the melting material used is PC. The final molded 3D curved lens is transparent, and the thickness can reach 0.6...

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Abstract

The invention discloses a production method of a 3D curved lens. The production method comprises the following steps: a step of injection molding: a melt is injected in from one side of a die cavity, and when 10%-40% of the volume of the die cavity is filled with the melt, auxiliary gas is injected into the die cavity; a step of compression: when 45%-90% of the volume of the die cavity is filled with the melt, the auxiliary gas is exhausted, compression of the inside of the die cavity is started, and the 3D curved lens is obtained. A finally obtained 3D curved lens product can replace glass to serve as parts such as a screen, a back cover and the like of a 3C (computer, communication and consumer electronics) product, and can be applied to the fields of high-end smarkphones and tablet personal computers, wearable equipment, dash boards, industrial computers and the like.

Description

technical field [0001] The invention relates to a compression injection molding process, in particular to a manufacturing method of a 3D curved lens. Background technique [0002] At present, the production of 3D curved glass is processed by 3D forming glass technology. The 3D forming glass technology is to place the glass between the curved molds, heat it to 800°C to the edge of melting, and then press it into the curved mold to bend the glass. , through CNC engraving machining and polishing treatment, and then heat transfer decorative patterns for visual effect processing. The processing yield rate of 3D shaped glass is low, the overall yield rate is lower than 50%, and the production cannot reach mass production. For 3D shaped glass processing, the number of CNC engraving machines is in great demand, and the investment cost is high. The time for 3D forming glass is more than 40 minutes, and the processing efficiency is less than one-fifth of that of ordinary cover glass....

Claims

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Application Information

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Patent Type & Authority Patents(China)
IPC IPC(8): B29C45/56B29C45/63B29C45/17B29L11/00
CPCB29C45/1703B29C45/57B29C45/76B29C45/77B29C45/78B29C2045/1729B29C2945/76551B29C2945/76591B29C2945/76595
Inventor 孙侥鲜王长明谢守德黎小莉
Owner DONGGUAN HUAQING OPTICAL TECH
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