CN1336277A - Roll mold for continuous Fresnel lens producing process - Google Patents
Roll mold for continuous Fresnel lens producing process Download PDFInfo
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- CN1336277A CN1336277A CN 01108599 CN01108599A CN1336277A CN 1336277 A CN1336277 A CN 1336277A CN 01108599 CN01108599 CN 01108599 CN 01108599 A CN01108599 A CN 01108599A CN 1336277 A CN1336277 A CN 1336277A
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- drum
- fresnel lenses
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Abstract
The present invention relates to drum mould used in continuous productions process of fresnel lens, said drum mould is composed of cylinder shape drum, metal mould and V shaped block, the metal mould is pressed closely on cylindrical drum by V shaped block, the outside of metal mould possesses the Fresnel lens surface shape, its outer contour of V shaped block has same redius is curvature with the cylindrical drum, V shaped block is fixed on cylindrical drum fixed unit.
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 one thereon and lack transparent plexiglass plate, 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 restrain the defective of newspaper 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 Throwing light to be handled, 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 (18) 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 true CN1336277A (en) | 2002-02-20 |
| CN1180924C CN1180924C (en) | 2004-12-22 |
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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 |
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| CN (1) | CN1180924C (en) |
Cited By (11)
| 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 stamping technology and ceramic plate stamping device |
| CN102540285A (en) * | 2011-12-31 | 2012-07-04 | 冯光友 | Manufacturing method of Fresnel film with light and heat gathering function |
| CN102611358A (en) * | 2012-04-14 | 2012-07-25 | 成都菲斯特科技有限公司 | Strip-type Fresnel lens light-gathering power generation device and manufacturing method thereof |
| CN103895219A (en) * | 2014-04-25 | 2014-07-02 | 成都菲斯特科技有限公司 | Conical roller for making Fresnel lens |
| CN104960187A (en) * | 2015-05-21 | 2015-10-07 | 哈尔滨工业大学 | Polyimide membrane curved surface performing 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 |
| CN108097984A (en) * | 2017-12-14 | 2018-06-01 | 广东工业大学 | A kind of mold and its machining tool for processing radial direction Fresnel structure |
| 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 |
-
2001
- 2001-07-05 CN CNB011085991A patent/CN1180924C/en not_active Expired - Fee Related
Cited By (14)
| 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 stamping technology and ceramic plate stamping device |
| CN102540285A (en) * | 2011-12-31 | 2012-07-04 | 冯光友 | Manufacturing method of Fresnel film with light and heat gathering function |
| CN102611358A (en) * | 2012-04-14 | 2012-07-25 | 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 |
| CN103895219A (en) * | 2014-04-25 | 2014-07-02 | 成都菲斯特科技有限公司 | Conical roller for making Fresnel lens |
| CN104960187A (en) * | 2015-05-21 | 2015-10-07 | 哈尔滨工业大学 | Polyimide membrane curved surface performing device |
| 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 |
| CN108097984A (en) * | 2017-12-14 | 2018-06-01 | 广东工业大学 | A kind of mold and its machining tool for processing radial direction Fresnel structure |
| CN108097984B (en) * | 2017-12-14 | 2020-06-09 | 广东工业大学 | Mould for processing radial Fresnel structure and processing machine tool thereof |
| 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 |
Also Published As
| Publication number | Publication date |
|---|---|
| CN1180924C (en) | 2004-12-22 |
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Granted publication date: 20041222 Termination date: 20100705 |