Lens forming die

A technology for molding molds and lenses, which is applied in glass molding, manufacturing tools, household appliances, etc. It can solve the problems of time-consuming machining, affecting the accuracy of lenses, surface smoothness, labor, etc.

Inactive Publication Date: 2006-12-13
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

like figure 1 As shown, the lens 2 is molded by the prior art lens forming mold, and the center points of the surfaces 22 and 24 of the lens 2 are not on the same vertical line, so there is an eccentricity. In order to eliminate the eccentricity, it can only be improved by passive machining , Machining is time-consuming and laborious, and will also affect the precision and surface finish of the lens

Method used

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Embodiment Construction

[0019] Please refer to Figure 2 to Figure 5 As shown, the lens forming mold 1 for forming the lens 60 provided in this embodiment includes: an upper mold core 10, a lower mold core 20, a mold core 10 located between the upper mold core 10 and the lower mold core 20. The positioning mechanism 30 between them, and a mold cover 40 for installing the upper mold core 10, the lower mold core 20 and the positioning mechanism 30.

[0020] Among them, the upper mold core 10 can be made of tungsten carbide (WC), silicon carbide (SiC), silicon nitride (Si 3 N 4 ), titanium carbide (TiC) or tungsten carbide-cobalt alloy. The upper mold core 10 includes an upper mold core body 110 , one end of the upper mold core body 110 is formed with an upper mold core convex column 120 concentric with the upper mold core body 110 , and an upper mold core convex column 120 is provided with an upper molding surface 122 .

[0021] The lower mold core 20 can be made of tungsten carbide, silicon carbide...

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Abstract

The invention provides the lens forming die, solving the eccentric center problem. The lens forming die comprises a top die, a counter die, cover die, and direction fixed pin. On the cover die there is pin-and-hole, on the counter die there many locating holes, and the direction fixed pin is embed into one of the locating holes.

Description

【Technical field】 [0001] The invention relates to a mold, especially a lens forming mold. 【Background technique】 [0002] The manufacture of optical glass products, such as aspheric glass lenses, mainly adopts compression molding technology, and the development of compression molding technology mainly depends on the progress of mold core materials and mold core manufacturing technology. There are the following requirements for the mold core of compression molding: [0003] a. At high temperature, it has good rigidity, mechanical impact resistance and sufficient hardness; [0004] b. The mold core does not produce cracks and deformation under the thermal shock of repeated and rapid heating and cooling; [0005] c. At high temperature, the molding surface of the mold core does not chemically react with the optical glass, and does not adhere to the glass; [0006] d. No high temperature oxidation; [0007] e. Good processing performance, easy to process into profiles with h...

Claims

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Application Information

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IPC IPC(8): C03B11/08
CPCC03B2215/60Y10S425/808C03B2215/65C03B2215/73C03B11/08
Inventor 江宗韦
Owner HONG FU JIN PRECISION IND (SHENZHEN) CO LTD
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