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Optical element molding mould

A mold and elastic element technology, applied in the field of molds for forming thin optical elements, can solve the problems of poor products, small spacer ring size, small contact area, etc.

Inactive Publication Date: 2013-04-24
HONG FU JIN PRECISION IND (SHENZHEN) CO LTD +1
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

However, in actual production, such as in the injection molding process of thin spacer rings, due to the small size of spacer rings, it is not easy to set the position of the ejector pin during mold design, and when using ejector pins to directly eject thin products, due to the small contact area, It is easy to cause defective products

Method used

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  • Optical element molding mould
  • Optical element molding mould
  • Optical element molding mould

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Embodiment Construction

[0011] The mold provided by the embodiment of the technical solution will be further described in detail below with reference to the drawings and embodiments.

[0012] see figure 1 and figure 2 , the present embodiment provides a mold 100 for molding optical elements such as lenses and spacer rings. It includes a female mold core 110 , a mold core seat 120 , a sleeve 130 , an elastic element 140 , a base 150 , a central pin 160 and a thimble 170 .

[0013] The female mold core 110 has a surface 111 , and a depression is formed from the surface 111 toward the inside of the female mold core 110 to form a molding surface 112 . In this embodiment, the mold 100 is used for forming the spacer ring, and the molding surface 112 is circular.

[0014] The mold core seat 120 is disposed opposite to the female mold core 110, and is provided with a receiving space, and the sleeve 130 is accommodated in the receiving space. In this embodiment, the core seat 120 has a first end surface ...

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PUM

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Abstract

The invention relates to a mould used for manufacturing an optical element. The mould comprises a mould core with a mould press surface, a mould core seat, a sleeve and a thimble, wherein the sleeve is movably embedded in the mould core seat and provided with a slide hole, an end face and a central pin which passes through the slide hole and is provided with a molding part protruding out of the end face; the mould press surface, the end face of the sleeve and the molding part together enclose a mould cavity; the thimble is used for ejecting the sleeve out after a product is molded and the mould is opened so as to ensure that the product falls off the end part of the central pin; an elastic element is arranged between the mould core seat and the sleeve and used for making the sleeve returnto an initial position when the action of the thimble to the sleeve stops.

Description

technical field [0001] The invention relates to a mold, in particular to a mold for molding thin optical elements. Background technique [0002] In recent years, with the development of multimedia, there is an increasing demand for optical components mounted on laptop computers, videophones, and mobile phones. This increase in demand requires further miniaturization and low cost of the optical components themselves. Optical components such as micro-lenses, light guide plates and other products are usually molded by injection molding. The use of injection molding can greatly improve production efficiency and output, and reduce costs. See Multiobjective optimization of a plastic injectionmolding process, Seaman, C.M., Desrochers, A.A; List, G.F.; Control Systems Technology, IEEE Transactions on Volume 2, Issue 3, Sept. 1994 Page(s: 157-168. [0003] In the prior art, the injection-molded product is usually ejected directly through the ejector pin. However, in actual produc...

Claims

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Application Information

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Patent Type & Authority Patents(China)
IPC IPC(8): B29C33/44B29L11/00
Inventor 林后尧余盛荣
Owner HONG FU JIN PRECISION IND (SHENZHEN) CO LTD