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Injection molding hyperboloid reflector and injection molding method thereof

A hyperboloid reflector and hyperboloid technology, which is applied to mirrors, other household appliances, optical components, etc., can solve the problems of inability to process reflectors, etc., and achieve the effects of improving light utilization, easy process operation, and convenient transportation

Inactive Publication Date: 2016-11-09
SHENZHEN ANGTEER SOLAR ENERGY INVESTMENT
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

Solve the technical problem that existing conventional glass or alloy materials cannot be processed to obtain high-precision reflectors with hyperbolic concave surfaces

Method used

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  • Injection molding hyperboloid reflector and injection molding method thereof
  • Injection molding hyperboloid reflector and injection molding method thereof

Examples

Experimental program
Comparison scheme
Effect test

Embodiment 1

[0033] combine figure 1 and figure 2 As shown, an injection molded hyperboloid reflector of the present invention includes a base 10 with a hyperboloid concave arc surface 101 obtained by injection molding by injection molding process, and a reflective layer 20 .

[0034] In order to ensure the smoothness of the reflective layer 20 , it is necessary to ensure that the roughness Ra of the concave arc surface 101 of the base 10 is 0.3-0.7 μm.

[0035] The base 10 is made of engineering plastics. Specifically, one of PMMA, PC, PPO and ABS or a composite injection molding material of at least two of them is preferably used.

[0036] The reflective layer 20 is coated on the concave arc surface 101 of the base 10 by a vacuum coating process. Wherein, the vacuum coating process may specifically adopt vacuum sputtering, vacuum evaporation or vacuum electroplating. The specific vacuum coating process can be determined according to the specific material of the reflective layer 20 ...

Embodiment 2

[0040] Embodiment 2 of the present invention provides a relational equation that the curved surface of the hyperboloid concave arc surface 101 of the hyperboloid mirror satisfies. The relationship of the concave arc surface 101 of the hyperboloid on the base 10 of the reflector in the X-axis, Y axis and Z-axis direction in the three-dimensional coordinate system is as follows: with a corner of the concave arc surface 101 as the origin, Z=( x 2 +y 2 ) / 2n, the value range of n is 300mm~700mm; where Z is the height in the Z-axis direction, X is the length in the X-axis direction, Y is the length in the Y-axis direction, and the units of X and Y are millimeters. The values ​​of X and Y are continuous numerical intervals, X is in the range of (0,400mm], and Y is in the range of (0,380mm].

[0041] The focal length of the hyperboloid reflector of present embodiment 2 is between 100mm~190mm; And the focal length of the square Fresnel condenser lens (380mm×380mm) of similar size is ...

Embodiment 3

[0043] The present embodiment 3 is the preparation method of the injection molded hyperboloid mirror of the present invention, comprising the following steps:

[0044] Step 1, preparing the base by injection molding: preparing a mold, the mold has a cavity consistent with the outline of the reflector base; filling the cavity of the mold with plastic melt, heat preservation and pressure, cooling, and demoulding to obtain base;

[0045] Step 2, connecting a reflective layer on the concave arc surface of the base prepared in step 1; obtaining an injection molded hyperboloid mirror.

[0046] In step 1 of Example 3, in order to ensure that the roughness Ra of the concave arc surface of the base reaches the range of 0.3-0.7 μm, it is necessary to match the concave arc surface of the mirror base in the mold cavity to The inner wall of the matching convex arc is specially treated so that the roughness Ra of the inner wall of the convex arc is 0.1-0.5 μm. Specifically, the roughness of...

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Abstract

The invention provides an injection molding hyperboloid reflector and an injection molding method thereof. The injection molding hyperboloid reflector comprises a pedestal which is obtained by employing an injection molding process and provided with a hyperboloid concave surface, and a reflecting layer connected to the concave surface. The pedestal is integrated through injection molding; the reflecting layer is connected to the pedestal concave surface through the vacuum coating technology. The pedestal which is obtained through injection molding and provided with a hyperboloid concave surface has sound moldability, is convenient to install and transport, and can better protect the reflecting layer in a transportation process. The pedestal preferably employs engineering plastics capable of injection molding, has great weatherability, is hard to deform, guarantees the service life of the hyperboloid reflector, and is light; meanwhile, the tolerance between the dimension of the hyperboloid concave surface of the hyperboloid reflector and the dimension of a theoretically calculated curved surface is small, and the hyperboloid concave surface is almost identical with a designed curved surface, has excellent light condensing effects, and can improve a light utilization rate. The injection molding method is simple to operate.

Description

technical field [0001] The invention relates to the technical field of a hyperboloid reflector and its preparation process, in particular to an injection molding hyperboloid reflector and an injection molding method thereof. Background technique [0002] In the solar module, the reflector is the main light-gathering component, and its light-gathering effect directly affects the light conversion efficiency of the solar module. [0003] At present, it has been pointed out in the literature that a reflector with a hyperbolic concave surface has a short spot focal length and a high light efficiency utilization rate, and is a new type of high-efficiency light-gathering component. However, because the processing of the concave surface of the hyperboloid requires high precision, the conventionally used glass or alloy material is difficult to process, and the processed surface cannot fully conform to the surface equation of the hyperboloid, resulting in a large gap between the conca...

Claims

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Application Information

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IPC IPC(8): G02B5/08G02B5/10B29D11/00
Inventor 王纪盛王国祥刘兰兰巫育恒
Owner SHENZHEN ANGTEER SOLAR ENERGY INVESTMENT
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