CN1180924C - Roll mold for continuous Fresnel lens producing process - Google Patents
Roll mold for continuous Fresnel lens producing process Download PDFInfo
- Publication number
- CN1180924C CN1180924C CNB011085991A CN01108599A CN1180924C CN 1180924 C CN1180924 C CN 1180924C CN B011085991 A CNB011085991 A CN B011085991A CN 01108599 A CN01108599 A CN 01108599A CN 1180924 C CN1180924 C CN 1180924C
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- Prior art keywords
- drum
- fresnel lenses
- die
- continuous
- roller
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- Legal status (The legal status is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the status listed.)
- Expired - Fee Related
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- 238000000034 method Methods 0.000 title claims abstract description 27
- 239000002184 metal Substances 0.000 claims abstract description 22
- 238000010924 continuous production Methods 0.000 claims abstract description 9
- 239000011347 resin Substances 0.000 claims description 27
- 229920005989 resin Polymers 0.000 claims description 27
- 238000004519 manufacturing process Methods 0.000 claims description 17
- 238000005516 engineering process Methods 0.000 claims description 9
- 229920003229 poly(methyl methacrylate) Polymers 0.000 claims description 9
- 239000004926 polymethyl methacrylate Substances 0.000 claims description 9
- 239000007788 liquid Substances 0.000 claims description 5
- 229920002799 BoPET Polymers 0.000 claims description 3
- 238000005520 cutting process Methods 0.000 claims description 3
- 239000012528 membrane Substances 0.000 claims description 3
- 230000000694 effects Effects 0.000 claims description 2
- 239000003292 glue Substances 0.000 claims description 2
- 238000001723 curing Methods 0.000 description 5
- 239000000463 material Substances 0.000 description 5
- 238000000465 moulding Methods 0.000 description 4
- 238000000016 photochemical curing Methods 0.000 description 4
- 239000002994 raw material Substances 0.000 description 4
- 238000001816 cooling Methods 0.000 description 3
- 239000010410 layer Substances 0.000 description 3
- 238000005498 polishing Methods 0.000 description 3
- 238000007711 solidification Methods 0.000 description 3
- 230000008023 solidification Effects 0.000 description 3
- 238000013036 cure process Methods 0.000 description 2
- 238000010586 diagram Methods 0.000 description 2
- 238000001125 extrusion Methods 0.000 description 2
- 239000000945 filler Substances 0.000 description 2
- 238000013007 heat curing Methods 0.000 description 2
- 230000001105 regulatory effect Effects 0.000 description 2
- 238000007493 shaping process Methods 0.000 description 2
- 229920005992 thermoplastic resin Polymers 0.000 description 2
- YAOAJCYJJRXVGD-UHFFFAOYSA-N C=C.CCCCCCCCOC(=O)C1=CC=CC=C1C(=O)OCCCCCCCC Chemical compound C=C.CCCCCCCCOC(=O)C1=CC=CC=C1C(=O)OCCCCCCCC YAOAJCYJJRXVGD-UHFFFAOYSA-N 0.000 description 1
- VVQNEPGJFQJSBK-UHFFFAOYSA-N Methyl methacrylate Chemical compound COC(=O)C(C)=C VVQNEPGJFQJSBK-UHFFFAOYSA-N 0.000 description 1
- 229920005372 Plexiglas® Polymers 0.000 description 1
- 239000004793 Polystyrene Substances 0.000 description 1
- 230000001070 adhesive effect Effects 0.000 description 1
- 238000010923 batch production Methods 0.000 description 1
- 230000005540 biological transmission Effects 0.000 description 1
- 230000015572 biosynthetic process Effects 0.000 description 1
- 238000005266 casting Methods 0.000 description 1
- 238000006243 chemical reaction Methods 0.000 description 1
- 239000011247 coating layer Substances 0.000 description 1
- 238000010276 construction Methods 0.000 description 1
- 230000008602 contraction Effects 0.000 description 1
- 230000002950 deficient Effects 0.000 description 1
- 238000007323 disproportionation reaction Methods 0.000 description 1
- 239000011521 glass Substances 0.000 description 1
- 230000003760 hair shine Effects 0.000 description 1
- 238000005286 illumination Methods 0.000 description 1
- 239000004973 liquid crystal related substance Substances 0.000 description 1
- 238000003754 machining Methods 0.000 description 1
- 230000003287 optical effect Effects 0.000 description 1
- 239000004417 polycarbonate Substances 0.000 description 1
- 229920000515 polycarbonate Polymers 0.000 description 1
- 229920006389 polyphenyl polymer Polymers 0.000 description 1
- 229920002223 polystyrene Polymers 0.000 description 1
- 239000004800 polyvinyl chloride Substances 0.000 description 1
- 229920000915 polyvinyl chloride Polymers 0.000 description 1
- 238000003892 spreading Methods 0.000 description 1
Abstract
The present invention relates to a roller mould in a continuously productive process of a frensnel lens. The roller mould is composed of a cylindrical roller (1), a metal mould (2) and a V-shaped block (3), wherein the metal mould (2) is extruded and close pasted above the cylindrical roller (1) through the V-shaped block (3), the outer side of the metal mould (2) is in the surface shape of the frensnel lens, the shape outline of the V-shaped block (3) has the same curvature radius as the curvature radius of the outer diameter of the cylindrical roller (1), and the V-shaped block (3) is preferably fixed on the cylindrical roller (1) through a fixing piece (18). The roller mould and a pressure roll (4) of the present invention are applied to various automatic and continuous processes for producing the frensnel lens in a fit mode, and the processes need to treat the surface microstructural shape of the frensnel lens.
Description
The invention belongs to the generation apparatus field of rear projection screen, specifically is the drum die in the used continuous Fresnel lens producing process of a kind of rear projection screen.
Fresnel Lenses and cylindrical mirror are used and are applicable to rear projection screen, and the Fresnel Lenses that the present invention relates to is the plane Fresnel Lenses, and one side is the concentric face of prismatic groove, and another side is the plane.Generally be made of a series of concentric prismatic grooves, each endless belt all is equivalent to an independently plane of refraction, and these prismatic bands can make incident light converge to a common focus.
Along with the raising of projected image definition, the pixel count of liquid crystal projector is brought up to 1,000,000 orders of magnitude from tens thousand of orders of magnitude of routine.This just requires the quantity of prismatic groove in every millimeter distance of Fresnel Lenses increase, generally will be between 2 to 20 every millimeter in the scope.
The method of producing Fresnel Lenses at present mainly contains three kinds:
(1) hot-forming
Hot press forming technology generally all adopts platen technology (be about to thermoplastic resin plate and place on the Fresnel Lenses mould, evenly impose certain pressure on the resin plate plane, pass through cooling and shaping); Or adopt the flat technology of roll-in (place thermoplastic resin plate on the Fresnel Lenses mould with the roller spreading, make its moulding, again cooling shaping).Its shortcoming be hot-forming in cooling procedure temperature distributing disproportionation even, it is longer that thermal contraction phenomenon, gradient of temperature cycle easily take place, and only is fit to the production of individual Fresnel Lenses, production efficiency is low.
(2) moulding by casting
Pouring forming technology generally is with liquid state, and the resin-cast that certain flowability arranged carries out resin solidification in the Fresnel Lenses mould of matched moulds, and its shortcoming is that the duration of pouring is longer, hardening time is long, easily produce bubble, also only be fit to the production of individual Fresnel Lenses, production efficiency is still low.
(3) planar light curing molding
The planar light cure process generally is to use the raw materials for production of light-cured resin as Fresnel Lenses, at the uniform liquid light-cured resin of Fresnel Lenses mould last layer thickness, place a transparent plexiglass plate thereon, at the uniform velocity pass through ultraviolet light source, ultraviolet ray shines through transparent organic glass and makes its curing on the light-cured resin, after curing is finished, carry out the demoulding and handle.Though the production time of adopting this planar light cure process can not be realized automatic continuous batch process than short but also still only suitable individual Fresnel Lenses production.
The surperficial special construction of Fresnel Lenses causes above-mentioned several production forming method efficient low, can not realize that the basic reason that serialization is produced is limited by the mould of Fresnel Lenses, owing to can only be processed into plane form in machining.
The objective of the invention is in order to overcome the defective of prior art, for people provide drum die in a kind of continuous Fresnel lens producing process, the use of drum die can absorb the advantage of above-mentioned three kinds of prior aries, can adopt light-cured resin as raw materials for production again, really realize the large-scale Fresnel Lenses of automatic continuous production.
The objective of the invention is to realize by following technical proposals.
Drum die in the continuous Fresnel lens producing process of the present invention is made up of rotatingcylindrical drum (1), metal die (2), vee-block (3), metal die (2) closely pastes on cylindrical drum (1) by vee-block (3) extruding, the outside of metal die (2) has the Fresnel Lenses surface configuration, and the appearance profile of vee-block (3) has identical radius of curvature with cylindrical drum (1) external diameter.
In the such scheme, vee-block (3) is to be fixed on the cylindrical drum (1) by fixture.
In the such scheme, filled by material softer low-melting-point metal or resin between vee-block (3) and the cylindrical drum (1), seam crossing carries out polishing.
Drum die in the continuous Fresnel lens producing process of the present invention and pressure roll (4) cooperate, can be used for the serialization production of polytechnic Fresnel Lenses such as heat cure, photocuring.So being cylindrical form, Fresnel Lenses drum die of the present invention also can adopt the method for roll extrusion to replace the photocuring moulding.
Drum die in the continuous Fresnel lens producing process of the present invention is applicable to the various sizes size, especially the large-scale continuous Fresnel lens producing process more than 42 inches.
The present invention will have certain amount of deflection and toughness and have the metal die of Fresnel Lenses surface configuration closely to paste on a cylinder by the vee-block extruding, fill by material softer low-melting-point metal or resin between vee-block and the cylinder, seam crossing carries out polishing, the appearance profile of vee-block has identical radius of curvature with the cylinder external diameter, otherwise when roll extrusion, can produce intermittent impact (referring to Fig. 1), vee-block on the drum die can closely paste the Fresnel Lenses metal die on cylinder, and metal pattern is had stretching, positioning action.So just realized making serialization production that material base arranged by the conversion of flat plate mold to drum die.From following application examples as seen, the invention of drum die of the present invention, make the technology of automatic continuous production Fresnel Lenses accomplished, can not only realize the continuous automatic production of large-scale Fresnel Lenses, and the wear extent of metal die is less, so its service life is almost unlimited, it has shortened the production cycle of individual screen greatly, and the Fresnel Lenses surface micro-structure precision of its formation is higher, and excellent optical characteristics can satisfy the needs of different user.
Further describe the present invention below by Application Example, the present invention is not limited only to described Application Example.
Accompanying drawing 1 is the cross section structure schematic diagram of the drum die in the continuous Fresnel lens producing process.
Accompanying drawing 2 is the part miscellaneous equipment of the automatic continuous production of Fresnel Lenses, the overall structure of visible drum die among the figure.
Accompanying drawing 3 is the complete equipment schematic diagram of the automatic continuous production application example of Fresnel Lenses.
Among the figure, 1, cylinder; 2, metal die; 3, vee-block; 4, pressure roll; 5, ultraviolet lamp; 6, support membrane; 7, fixture; 8, conveying roller; 9, plater; 10, guide roller; 11, plater; 12, poly (methyl methacrylate) plate; 13, series of rollers; 14, roller; 15, cutting knife; 16 series of rollers; 17, filler.
As shown in Figure 1: the drum die in the continuous Fresnel lens producing process of the present invention is made up of rotatingcylindrical drum (1), metal die (2), vee-block (3), metal die (2) closely pastes on cylindrical drum (1) by vee-block (3) extruding, the outside of metal die (2) has the Fresnel Lenses surface configuration, and the appearance profile of vee-block (3) has identical radius of curvature with cylindrical drum (1) external diameter.Vee-block (3) is fixed on the cylindrical drum (1) by fixture (7), and fixture (7) is a sunk screw.Be that filler (17) is filled by material softer low-melting-point metal or resin between vee-block (3) and the cylindrical drum (1), seam crossing carries out polishing.
Figure 3 shows that the technological process and the equipment that adopt the automatic continuous manufacturing Fresnel Lenses of ultraviolet curing process, further describe the present invention below by introducing technical process: as shown in Figure 3:
(1) transparent support film (6) is that the PET film is transported to plater (9) through conveying roller (8) and locates in regional A, by the blade in the plater (9) liquid light-cured resin is evenly coated on the whole surface of support membrane (6), forms the uniform transparent resin film of a layer thickness;
(2) film enters between roller mould and the pressure roll (4) by guide roller (10), the effect that above-mentioned roller mould is equipped with pressure roll (4) is that the Fresnel Lenses surface micro-structure shape that metal die (2) outside is had is passed to above-mentioned transparent resin film, by the ultraviolet irradiation in the ultraviolet lamp (5), light-cured resin is solidified, form a series of concentric prismatic groove structures;
(3) after film enters area B through regional A, by plater (11) layer of transparent glue is evenly coated on the poly (methyl methacrylate) plate (12), poly (methyl methacrylate) plate (12) is by the appointed area that delivers into of series of rollers (13), by roller (14) cured resin is rolled on poly (methyl methacrylate) plate (13), use cutting knife (15) to cut off in position, be transported to subsequent processing by series of rollers (16).By the continuous supply of poly (methyl methacrylate) plate and film, thereby realized the continuous automatic production of large-scale Fresnel Lenses.
In the above-mentioned application examples: the transparent support film 6 general ultraviolet (uv) transmission films that adopt, itself and light-cured resin have adhesive property preferably, material can be selected PET film, polyphenyl dioctyl phthalate ethene, polycarbonate, polyvinyl chloride, polystyrene etc., blade to plater 9 has no special requirements, and general the employing scraped film or coater.
The thickness of the light-cured resin that is coated with on transparent support 6 is according to the characteristic of Fresnel Lenses and fixed, and the flow that liquid light-cured resin is controlled in the edge of a knife of the viscosity that coating layer thickness can be by adjusting light-cured resin and the amount of feeding of transparent support film and plater and the gap of transparent support film is controlled effectively.In order to enhance productivity, reduce the resin solidification time, adopt the raw material of ultraviolet photo-curing resin as Fresnel Lenses.
The curing that film is located at ultraviolet lamp (5) can be regulated the solidification process of light-cured resin by the characteristic of regulating the amount of feeding that ultraviolet intensity, illumination penetrates the length of time, film and light-cured resin arbitrarily.From last application examples as seen, drum die of the present invention is the key that realizes the technology of automatic continuous production Fresnel Lenses, miscellaneous equipment except that drum die, and process conditions, process route (photocuring or heat cure or other method), raw materials for production etc. all can have various variations, drum die promptly of the present invention need to can be applicable in the technology of various automatic continuous production Fresnel Lenses of processing Fresnel Lenses surface micro-structure shape as required.
Claims (4)
1, the drum die in the continuous Fresnel lens producing process, it is characterized in that this drum die is made up of rotatingcylindrical drum (1), metal die (2), vee-block (3), metal die (2) closely pastes on cylindrical drum (1) by vee-block (3) extruding, the outside of metal die (2) has the Fresnel Lenses surface configuration, and the appearance profile of vee-block (3) has identical radius of curvature with cylindrical drum (1) external diameter.
2, to it is characterized in that described vee-block (3) is to be fixed on the cylindrical drum (1) by fixture (7) according to the drum die of asking in the 1 described continuous Fresnel lens producing process according to right.
3, the application of the drum die in the described continuous Fresnel lens producing process of claim 1 is characterized in that described drum die and pressure roll (4) fit applications is in the technology of the various automatic continuous production Fresnel Lenses of needs processing Fresnel Lenses surface micro-structure shape.
4, the application of the drum die in the described continuous Fresnel lens producing process of claim 3 is characterized in that the technology of described automatic continuous production Fresnel Lenses is:
(1) transparent support film (6) is that the PET film is transported to plater (9) through conveying roller (8) and locates in regional A, by the blade in the plater (9) liquid light-cured resin is evenly coated on the whole surface of support membrane (6), forms the uniform transparent resin film of a layer thickness;
(2) film enters between roller mould and the pressure roll (4) by guide roller (10), the effect that above-mentioned roller mould is equipped with pressure roll (4) is that the Fresnel Lenses surface micro-structure shape that metal die (2) outside is had is passed to above-mentioned transparent resin film, by the ultraviolet irradiation in the ultraviolet lamp (5), light-cured resin is solidified, form a series of concentric prismatic groove structures;
(3) after film enters area B through regional A, by plater (11) layer of transparent glue is evenly coated on the poly (methyl methacrylate) plate (12), poly (methyl methacrylate) plate (12) is by the appointed area that delivers into of series of rollers (13), by roller (14) cured resin is rolled on poly (methyl methacrylate) plate (13), use cutting knife (15) to cut off in position, by, series of rollers (16) is transported to subsequent processing, by the continuous supply of poly (methyl methacrylate) plate and film, realize the continuous automatic production of large-scale Fresnel Lenses.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CNB011085991A CN1180924C (en) | 2001-07-05 | 2001-07-05 | Roll mold for continuous Fresnel lens producing process |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CNB011085991A CN1180924C (en) | 2001-07-05 | 2001-07-05 | Roll mold for continuous Fresnel lens producing process |
Publications (2)
| Publication Number | Publication Date |
|---|---|
| CN1336277A CN1336277A (en) | 2002-02-20 |
| CN1180924C true CN1180924C (en) | 2004-12-22 |
Family
ID=4657402
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CNB011085991A Expired - Fee Related CN1180924C (en) | 2001-07-05 | 2001-07-05 | Roll mold for continuous Fresnel lens producing process |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN1180924C (en) |
Families Citing this family (12)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN1292977C (en) * | 2005-06-09 | 2007-01-03 | 西安交通大学 | Deep submicron three-dimensional rolling mould and its mfg. method |
| CN100463792C (en) * | 2005-06-28 | 2009-02-25 | 阮立山 | Fresnel lens roller forming process and machine |
| CN101618571B (en) * | 2009-07-23 | 2012-05-30 | 沈英 | Ceramic plate imprinting process and device thereof |
| CN102540285A (en) * | 2011-12-31 | 2012-07-04 | 冯光友 | Manufacturing method of Fresnel film with light and heat gathering function |
| CN102611358B (en) * | 2012-04-14 | 2014-12-10 | 成都菲斯特科技有限公司 | Strip-type Fresnel lens light-gathering power generation device and manufacturing method thereof |
| CN103895219B (en) * | 2014-04-25 | 2016-01-20 | 成都菲斯特科技有限公司 | For making the taper roller of Fresnel Lenses |
| CN104960187B (en) * | 2015-05-21 | 2017-03-01 | 哈尔滨工业大学 | A kind of Kapton curved surface pre-forming device |
| CN107015298A (en) * | 2017-05-03 | 2017-08-04 | 成都菲斯特科技有限公司 | A kind of preparation method of linear Fresnel lens |
| CN108097984B (en) * | 2017-12-14 | 2020-06-09 | 广东工业大学 | A mold for machining radial Fresnel structure and its machining machine |
| CN108680972A (en) * | 2018-03-19 | 2018-10-19 | 青岛海信激光显示股份有限公司 | A kind of making mold, making apparatus and the production method of Fresnel micro-structure |
| CN109856709A (en) * | 2019-03-29 | 2019-06-07 | 刘刚 | A kind of production method of major diameter Fresnel Lenses |
| CN113589636B (en) * | 2020-04-30 | 2024-06-14 | 成都菲斯特科技有限公司 | Optical projection screen production line |
-
2001
- 2001-07-05 CN CNB011085991A patent/CN1180924C/en not_active Expired - Fee Related
Also Published As
| Publication number | Publication date |
|---|---|
| CN1336277A (en) | 2002-02-20 |
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Granted publication date: 20041222 Termination date: 20100705 |