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A kind of preparation method of quadric mirror

A quadratic surface and reflector technology, which is applied in the field of curved reflectors, can solve problems such as inconsistent changes in curvature radius, sharp inflection points at seams, and unusable reflectors, so as to improve the yield rate in the later stage and achieve good surface shape consistency , product quality and stable effect

Active Publication Date: 2021-02-02
郭远芳
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

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Problems solved by technology

The main disadvantage of this process is that it cannot fundamentally solve the problem of thermal deformation of the edge of the resin reflector, resulting in inconsistent changes in the radius of curvature of each reflector unit when the temperature deviates from the design, and sharp inflection points appear at the seams, which in severe cases makes the reflector unusable, or even is an irreversible deformation

Method used

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  • A kind of preparation method of quadric mirror
  • A kind of preparation method of quadric mirror
  • A kind of preparation method of quadric mirror

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preparation example Construction

[0023] The invention provides a method for preparing a quadratic mirror, comprising the following steps:

[0024] (1) cutting and ultrasonically welding the thermoplastic non-crystalline resin plate coated with the metal film in sequence to obtain a parison; the shape and size of the parison are to completely cover the mirror port of the quadric mirror to be made The unfolded shape prevails;

[0025] (2) Heating the parison to a target temperature for blow molding to obtain a quadric reflector; the target temperature is greater than the deformation temperature of the parison and lower than the thermal damage temperature of the metal film on the parison.

[0026] The preparation method provided by the present invention directly uses the thermoplastic non-crystalline resin plate coated with metal film as the raw material, obtains the parison by cutting and ultrasonic welding, and then obtains the quadratic surface by controlling the temperature of the blow molding process at one...

Embodiment 1

[0061] (1) The steel molding control frame is prepared by metal numerical control processing technology, and its structure is as follows figure 1 with figure 2 As shown, it includes a concave frame and a convex frame; the shape and size of the frame opening of the concave frame and the convex frame are the same, and are the same as the shape and size of the mirror opening of the quadric surface mirror that needs to be made;

[0062] (2) The acrylic plate coated with aluminum film is used as the material for making a large-scale quadric surface reflector, the thickness of the acrylic base plate in the acrylic plate coated with aluminum film is 5mm, and the thickness of the aluminum film is 300~480nm. The specification of the acrylic plate with aluminum film is 1.8*1.2m; the acrylic plate coated with aluminum film is cut and ultrasonically welded in turn to obtain a parison with a diameter of 4 meters; the weld seam of the ultrasonic welding is as thin as possible and Regular ...

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Abstract

The invention belongs to the technical field of curved surface mirrors. The preparation method provided by the present invention directly uses the metal-coated thermoplastic non-crystalline resin plate as a raw material, and obtains a parison by cutting and ultrasonic welding, and then obtains a quadratic surface by controlling the temperature of the blow molding process at one time. Reflector. This method reduces the investment in basic equipment, production costs and technical risks, and the operation process is simple, which significantly improves the yield in the later stage, and the product quality is high and stable; at the same time, the method has good surface consistency, no need for splicing, and the finished product is light in weight. It is convenient; the size and specifications can be changed flexibly, and those skilled in the art can make the molding control frame according to the needs. The process has strong adaptability, and the obtained product has a clean appearance and can be used directly.

Description

technical field [0001] The invention relates to the technical field of curved mirrors, in particular to a method for preparing a quadric mirror. Background technique [0002] In flight simulator virtual image display systems and other systems or devices that require large virtual image displays, large quadric mirrors are required. The curved surface radius of the finished large quadric surface mirror is generally not more than 3.5 meters, and the range of the spherical zone is not more than 70 degrees vertically and 260 degrees horizontally. At present, there are four kinds of materials used in this type of reflector: metal, glass, mylar film and resin. Among them, the metal material is still in the research stage and has not been popularized on a large scale; the glass material is currently the best in terms of reflectivity, surface accuracy and other technical performances, but the existing glass processing methods are difficult to meet the requirements of industrial mass...

Claims

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Application Information

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Patent Type & Authority Patents(China)
IPC IPC(8): B29C49/02B29C49/78B29C65/74B29L11/00
CPCB29C49/02B29C49/783B29C49/786B29C65/74B29C66/84B29L2011/0083B29C2949/08
Inventor 郭远芳
Owner 郭远芳
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