CN103631014A - Foam-sandwich-structured light scanning mirror and manufacturing method thereof - Google Patents
Foam-sandwich-structured light scanning mirror and manufacturing method thereof Download PDFInfo
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- CN103631014A CN103631014A CN201310647967.4A CN201310647967A CN103631014A CN 103631014 A CN103631014 A CN 103631014A CN 201310647967 A CN201310647967 A CN 201310647967A CN 103631014 A CN103631014 A CN 103631014A
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Abstract
The invention discloses a foam-sandwich-structured light scanning mirror and a manufacturing method thereof. The scanning mirror is of a sandwich structure composed of a front high-reflectivity mirror aluminum sheet, middle foamed plastic and a back structural aluminum plate, and the foam-sandwich-structured light scanning mirror is manufactured by adopting a mould to fix the high-reflectivity mirror aluminum sheet and the structural aluminum plate and processed by filling the foamed plastic therebetween for formation. Compared to a conventional scanning mirror integrally manufactured, the foam-sandwich-structured light scanning mirror is light in structural quality, small in loading moment, simple in structure and low in cost, and a new method for light weight of the scanning mirror and miniaturization of a scanning mechanism is provided.
Description
Technical field
The present invention relates to the loss of weight problem of optical imagery Detection Techniques field, especially scanning mirror, be specifically related to foam sandwich structure lightweight scanning mirror and preparation method thereof.
Background technology
In a lot of fields such as optical imagery detections, due to the limitation of the visual field of optical system own, need to come by mechanically operated scanning mirror the visual field of expanding system, to complete the fast scan imaging to target.The Heat stability is goods such as the general adopting quartz glass of traditional scanning mirror, SiC, metallic beryllium and aluminium, the material that rigidity is large form by mechanical integrated processing and fabricating, and wherein metallic aluminium is because good optical reflectivity is widely used in the making of scanning mirror and the plated film of scanning mirror.Yet, because the needed scanning mirror size of optical imaging system of large visual field is larger, thereby cause by the scanning mirror quality of the large density material making such as above-mentioned quartz glass, SiC, metallic beryllium and aluminium too large, the required moment of scanning mechanism driven sweep mirror is larger, thereby cause the overall dimensions of scanning mechanism and the increase of quality, although can make lightweight hole at the back of scanning mirror, its weight loss effect is still undesirable, and its process-cycle is long, price is high.The scanning mirror of large quality, long process-cycle, high price has limited optical imaging system in very many-sided application such as miniaturization, the marketizations.Therefore, need badly and a kind ofly can realize scanning mirror lightweight and can realize the scanning mirror structure of large-scale production and scanning mirror method for making substitutes existing integral type processing and back lightweight weight losing method.
Summary of the invention
For defect of the prior art, the object of this invention is to provide a kind of foam sandwich structure lightweight scanning mirror and preparation method thereof and solve above-mentioned large scale scanning mirror loss of weight and realize the problem that batch production aspect exists.
According to foam sandwich structure lightweight scanning mirror provided by the invention, comprising: high reflectance minute surface aluminium sheet, chemically foamed plastic, structure aluminium sheet;
Chemically foamed plastic is between high reflectance minute surface aluminium sheet and structure aluminium sheet; High reflectance minute surface aluminium sheet arrives optical system for the functional minute surface as scanning mirror with reflection object space light; Shape as the structure aluminium sheet 3 of structural support is consistent with high reflectance minute surface aluminium sheet.
Preferably, high reflectance minute surface aluminium sheet is parallel to structure aluminium sheet.
Preferably, the main part of high reflectance minute surface aluminium sheet is oval or circular.
Preferably, high reflectance minute surface aluminium sheet comprises two gulde edges, and the bearing of trend of two gulde edges is mutually vertical.
Preferably, between high reflectance minute surface aluminium sheet and structure aluminium sheet, the cohesive force by cooled chemically foamed plastic combines.
Preferably, chemically foamed plastic is polyurethane foam plastics.
According to the method for making of above-mentioned foam sandwich structure lightweight scanning mirror provided by the invention, it utilizes mould that front high reflectance minute surface aluminium sheet and structure aluminium sheet are fixed, then in fixing high reflectance minute surface aluminium sheet and the mold cavity between structure aluminium sheet, pour into a mould appropriate chemically foamed plastic, sealed cast mouth after cast, after chemically foamed plastic is cooling, molding obtains the scanning mirror of foam sandwich structure.
Preferably, mold materials for fixing front high reflectance minute surface aluminium sheet and structure aluminium sheet is aluminium alloy or stainless steel, mould structure divides upper die and lower die, upper die and lower die are all die, and the bottom surface of upper die and lower die die cavity is identical with the shape of structure aluminium sheet with scanning mirror front high reflectance minute surface aluminium sheet; The detent mechanism of the protrusion of making on patrix die joint coordinates to guarantee the positioning precision of upper die and lower die die cavity with the recessed detent mechanism of making on counterdie die joint; On upper die and lower die die joint, be manufactured with the funnel shaped cast gate cooperatively interacting, be beneficial to the injection of foamed plastic; On upper die and lower die die joint, be manufactured with the rectangular parallelepiped blind hole that cooperatively interacts to facilitate the cooled molding of scanning mirror model.
Preferably, the cooperation between upper mould, counterdie die cavity and front high reflectance minute surface aluminium sheet and structure aluminium sheet is transition fit.
Compare with the scanning mirror that the large density material of quartz glass, SiC, metallic beryllium and the aluminium etc. of prior art is made, it is light that the present invention has quality, and loading moment is little, the advantage that can greatly simplify the quality of scanning mechanism and volume, saves production cost.The making of foam sandwich structure lightweight scanning mirror of the present invention adopts the method for die casting foamed plastic moulding, and with respect to traditional mechanical integrated job operation, method is simple, easy to operate, and the process-cycle is short, and cost is low, is suitable for mass production.
Accompanying drawing explanation
By reading the detailed description of non-limiting example being done with reference to the following drawings, it is more obvious that other features, objects and advantages of the present invention will become:
Fig. 1 is the structural drawing of foam sandwich structure lightweight scanning mirror thickness direction of the present invention.
Fig. 2 is the shape of an embodiment of foam sandwich structure lightweight scanning mirror of the present invention.
Fig. 3 is that foam sandwich structure lightweight scanning mirror of the present invention is made die needed wiring layout.
Fig. 4 is that foam sandwich structure lightweight scanning mirror of the present invention is made die needed patrix.
Fig. 5 is that foam sandwich structure lightweight scanning mirror of the present invention is made die needed counterdie.
Fig. 6 is foam sandwich structure lightweight scanning mirror method for making sketch of the present invention.
Embodiment
Below in conjunction with specific embodiment, the present invention is described in detail.Following examples will contribute to those skilled in the art further to understand the present invention, but not limit in any form the present invention.It should be pointed out that to those skilled in the art, without departing from the inventive concept of the premise, can also make some distortion and improvement.These all belong to protection scope of the present invention.
The principle of foam sandwich structure scanning mirror loss of weight of the present invention is to utilize the low density porous structure of middle layer foamed plastic to replace original solid construction, utilizing positive specular aluminium to guarantee the mirror-reflection function of scanning mirror, utilize the structure aluminium sheet at the back side to guarantee scanning mirror rigidity and the situation of installing with scanning mechanism under realize the lightweight of scanning mirror.
The method for making of foam sandwich structure scanning mirror of the present invention is utilized the fixing positive minute surface aluminium sheet of mould and the structure aluminium sheet at the back side, and inject foamed plastic between front minute surface aluminium sheet and structure aluminium sheet, expansion tension while utilizing foamed plastic foaming and the flatness of mold cavity guarantee flatness and the depth of parallelism that scanning mirror is made, and utilize the cohesive force between the cooling rear same aluminium sheet of foamed plastic that front minute surface aluminium sheet and back structures aluminium sheet are bonded together.
Particularly, below in conjunction with accompanying drawing 1 to Fig. 6, the embodiment of foam sandwich structure lightweight scanning mirror of the present invention an and preparation method thereof embodiment is elaborated:
As shown in Figure 1, foam sandwich structure lightweight scanning mirror comprises the sandwich structure being mainly comprised of positive high reflectance minute surface aluminium sheet 1, the polyurethane foam plastics 2 of centre and the structure aluminium sheet 3 at the back side.Front high reflectance minute surface aluminium sheet 1 is the functional minute surface of scanning mirror, for reflecting object space light to optical system.The minute surface basic configuration of high reflectance minute surface aluminium sheet 1 is oval as shown in Figure 2, because oval-shaped curve is inconvenient to locate, is therefore positioned at for convenience the gulde edge 4 that has added two vertical direction on oval structure.Scanning mirror structure aluminium sheet 3 is structural supports of scanning mirror, and for guaranteeing the rigidity of scanning mirror and guaranteeing scanning mirror front high reflectance minute surface aluminium sheet 1 and depth of parallelism when scanning mechanism installs, its shape is in full accord with front high reflectance minute surface aluminium sheet 1.The polyurethane foam plastics 2 of filling between scanning mirror front high reflectance minute surface aluminium sheet 1 and back ordinary construction aluminium sheet 3, for guaranteeing the supporting construction material of scanning mirror rigidity, is also the weight-reducing material of scanning mirror simultaneously.Scanning mirror front high reflectance minute surface aluminium sheet 1, back ordinary construction aluminium sheet 3 are with connecting by the cooled viscous force of liquid urethane foam plastic foaming between middle sandwich polyurethane foam plastics 2 supporting constructions.
The making of foam sandwich structure lightweight scanning mirror of the present invention is by the mould shown in Fig. 3 fixedly front high reflectance minute surface aluminium sheet 1 and structure aluminium sheet 3 as shown in Figure 6, then in the mold cavity between two blocks of aluminium sheets, waters that liquid polyurethane polyfoam 2 obtains after foaming cooling forming.Shown in Fig. 4 and Fig. 5, for fixedly stainless steel or the aluminium-making mould of front high reflectance minute surface aluminium sheet and structure aluminium sheet, be divided into patrix 5 and counterdie 6, it is die joint that patrix 5 and counterdie 6 be take the central plane of thickness direction, and upper and lower mould is all die.The shape (shown in Fig. 2) of the positive specular aluminium 1 of upper and lower mould cavity shape 7a and 7b and scanning mirror and structure aluminium sheet 3 is identical.Between patrix 5 and counterdie 6, by bolt, utilize the threaded hole 8a and the 8b that coordinate up and down to connect, the detent mechanism 9a that is manufactured with protrusion on patrix 5 die joints coordinates to guarantee the positioning precision of upper and lower mould die cavity 7a and 7b with detent mechanism 9b recessed on counterdie 6 die joints.On patrix 5 and counterdie 6, be manufactured with sprue cup 10a and the 10b cooperatively interacting, be beneficial to the injection of liquid polyurethane plastics.For convenience of molding, on patrix 5 and counterdie 6, be manufactured with die cavity 11a and the 11b that cooperatively interact simultaneously.
Above specific embodiments of the invention are described.It will be appreciated that, the present invention is not limited to above-mentioned specific implementations, and those skilled in the art can make various distortion or modification within the scope of the claims, and this does not affect flesh and blood of the present invention.
Claims (9)
1. a foam sandwich structure lightweight scanning mirror, is characterized in that, comprising: high reflectance minute surface aluminium sheet, chemically foamed plastic, structure aluminium sheet;
Chemically foamed plastic is between high reflectance minute surface aluminium sheet and structure aluminium sheet; High reflectance minute surface aluminium sheet arrives optical system for the functional minute surface as scanning mirror with reflection object space light; Shape as the structure aluminium sheet of structural support is consistent with high reflectance minute surface aluminium sheet.
2. foam sandwich structure lightweight scanning mirror according to claim 1, is characterized in that, high reflectance minute surface aluminium sheet is parallel to structure aluminium sheet.
3. foam sandwich structure lightweight scanning mirror according to claim 1, is characterized in that, the main part of high reflectance minute surface aluminium sheet is oval or circular.
4. foam sandwich structure lightweight scanning mirror according to claim 1, is characterized in that, high reflectance minute surface aluminium sheet comprises two gulde edges, and the bearing of trend of two gulde edges is mutually vertical.
5. foam sandwich structure lightweight scanning mirror according to claim 1, is characterized in that, the cohesive force by cooled chemically foamed plastic between high reflectance minute surface aluminium sheet and structure aluminium sheet combines.
6. foam sandwich structure lightweight scanning mirror according to claim 5, is characterized in that, chemically foamed plastic is polyurethane foam plastics.
7. the method for making of a foam sandwich structure lightweight scanning mirror claimed in claim 1, it is characterized in that: utilize mould that front high reflectance minute surface aluminium sheet and structure aluminium sheet are fixed, then in fixing high reflectance minute surface aluminium sheet and the mold cavity between structure aluminium sheet, pour into a mould appropriate chemically foamed plastic, sealed cast mouth after cast, after chemically foamed plastic is cooling, molding obtains the scanning mirror of foam sandwich structure.
8. the method for making of foam sandwich structure lightweight scanning mirror according to claim 7, it is characterized in that: for the fixing mold materials of front high reflectance minute surface aluminium sheet and structure aluminium sheet, be aluminium alloy or stainless steel, mould structure divides upper die and lower die, upper die and lower die are all die, and the bottom surface of upper die and lower die die cavity is identical with the shape of structure aluminium sheet with scanning mirror front high reflectance minute surface aluminium sheet; The detent mechanism of the protrusion of making on patrix die joint coordinates to guarantee the positioning precision of upper die and lower die die cavity with the recessed detent mechanism of making on counterdie die joint; On upper die and lower die die joint, be manufactured with the funnel shaped cast gate cooperatively interacting, be beneficial to the injection of foamed plastic; On upper die and lower die die joint, be manufactured with the rectangular parallelepiped blind hole that cooperatively interacts to facilitate the cooled molding of scanning mirror model.
9. the method for making of foam sandwich structure lightweight scanning mirror according to claim 8, is characterized in that: the cooperation between upper mould, counterdie die cavity and front high reflectance minute surface aluminium sheet and structure aluminium sheet is transition fit.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201310647967.4A CN103631014A (en) | 2013-12-04 | 2013-12-04 | Foam-sandwich-structured light scanning mirror and manufacturing method thereof |
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| CN201310647967.4A CN103631014A (en) | 2013-12-04 | 2013-12-04 | Foam-sandwich-structured light scanning mirror and manufacturing method thereof |
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| CN103631014A true CN103631014A (en) | 2014-03-12 |
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| CN201310647967.4A Pending CN103631014A (en) | 2013-12-04 | 2013-12-04 | Foam-sandwich-structured light scanning mirror and manufacturing method thereof |
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Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN110146977A (en) * | 2019-06-06 | 2019-08-20 | 西安交通大学 | A kind of light-duty heavy caliber continuous film distorting lens and its manufacturing method |
Citations (3)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| JPH07319077A (en) * | 1994-05-20 | 1995-12-08 | Fuji Xerox Co Ltd | Optical scanning device |
| CN1769946A (en) * | 2004-11-03 | 2006-05-10 | 一品光学工业股份有限公司 | F-theta lens of laser scanning unit and making method thereof |
| CN102749706A (en) * | 2011-04-19 | 2012-10-24 | 株式会社理光 | Optical scanning apparatus and imaging apparatus |
-
2013
- 2013-12-04 CN CN201310647967.4A patent/CN103631014A/en active Pending
Patent Citations (3)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| JPH07319077A (en) * | 1994-05-20 | 1995-12-08 | Fuji Xerox Co Ltd | Optical scanning device |
| CN1769946A (en) * | 2004-11-03 | 2006-05-10 | 一品光学工业股份有限公司 | F-theta lens of laser scanning unit and making method thereof |
| CN102749706A (en) * | 2011-04-19 | 2012-10-24 | 株式会社理光 | Optical scanning apparatus and imaging apparatus |
Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN110146977A (en) * | 2019-06-06 | 2019-08-20 | 西安交通大学 | A kind of light-duty heavy caliber continuous film distorting lens and its manufacturing method |
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Application publication date: 20140312 |