JPH0929549A - Manufacture of penetration type screen die and device therefor - Google Patents
Manufacture of penetration type screen die and device thereforInfo
- Publication number
- JPH0929549A JPH0929549A JP17725595A JP17725595A JPH0929549A JP H0929549 A JPH0929549 A JP H0929549A JP 17725595 A JP17725595 A JP 17725595A JP 17725595 A JP17725595 A JP 17725595A JP H0929549 A JPH0929549 A JP H0929549A
- Authority
- JP
- Japan
- Prior art keywords
- cylindrical roll
- die
- transmissive screen
- mold
- curable resin
- Prior art date
- 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.)
- Granted
Links
- 238000004519 manufacturing process Methods 0.000 title claims abstract description 15
- 230000035515 penetration Effects 0.000 title abstract 2
- 239000011347 resin Substances 0.000 claims abstract description 26
- 229920005989 resin Polymers 0.000 claims abstract description 26
- 238000000034 method Methods 0.000 claims abstract description 19
- 238000004804 winding Methods 0.000 claims abstract description 4
- 230000003014 reinforcing effect Effects 0.000 claims description 9
- 230000001681 protective effect Effects 0.000 claims description 6
- 239000007788 liquid Substances 0.000 claims description 5
- 230000005540 biological transmission Effects 0.000 claims description 3
- 239000000853 adhesive Substances 0.000 claims 1
- 230000001070 adhesive effect Effects 0.000 claims 1
- 239000000463 material Substances 0.000 abstract description 26
- 238000010586 diagram Methods 0.000 description 7
- 238000003848 UV Light-Curing Methods 0.000 description 3
- 238000009499 grossing Methods 0.000 description 3
- 238000007796 conventional method Methods 0.000 description 2
- 238000001723 curing Methods 0.000 description 2
- 230000005489 elastic deformation Effects 0.000 description 1
- 239000004973 liquid crystal related substance Substances 0.000 description 1
- 239000012778 molding material Substances 0.000 description 1
- 230000002787 reinforcement Effects 0.000 description 1
- 238000005096 rolling process Methods 0.000 description 1
Landscapes
- Turning (AREA)
- Moulds For Moulding Plastics Or The Like (AREA)
Abstract
Description
【０００１】[0001]
【産業上の利用分野】本発明は、透過型スクリーンに用
いられるレンチキュラスクリーン及びリニアフレネルス
クリーンを形成するための金型の製造方法及び製造装置
に関する。BACKGROUND OF THE INVENTION 1. Field of the Invention The present invention relates to a method and an apparatus for manufacturing a mold for forming a lenticular screen and a linear Fresnel screen used for a transmissive screen.
【０００２】[0002]
【従来の技術】従来、この種の透過型スクリーン金型の
製造方法は、高精細画像を有するハイビジョンプロジェ
クタや液晶プロジェクタ用としてファインピッチ且つ高
精度なレンチキュラレンズ金型を得ることを目的として
用いられている。例えば特開平４−５３６４２号公報で
は、円筒ロールに型材をその表面歪み量が型材の弾性限
度内であるように巻き付け旋削加工を施すことを特徴と
している。即ち型材を円筒ロールに巻き付けた際に円周
方向断面の発生応力が型材の弾性変形内であれば旋削加
工後に円筒ロールから取り外すだけで平坦性が良好で且
つレンズ形状の微細な変化のない透過型スクリーン金型
が得られるということが記載されている。2. Description of the Related Art Conventionally, a method of manufacturing a transmissive screen mold of this kind has been used for the purpose of obtaining a lenticular lens mold having a fine pitch and a high precision for a high vision projector or a liquid crystal projector having a high definition image. ing. For example, Japanese Unexamined Patent Publication No. 4-53642 is characterized in that a cylindrical material is wound and turned so that the surface strain amount is within the elastic limit of the molding material. That is, if the stress generated in the circumferential cross section when the mold material is wound on a cylindrical roll is within the elastic deformation of the mold material, the flatness is good and the transmission without any minute change in the lens shape is achieved simply by removing it from the cylindrical roll after turning. It is stated that a mold screen mold is obtained.
【０００３】図６は従来の金型旋削加工を示す工程図で
あり、（Ａ）は円筒ロールの端面方向から見た図、
（Ｂ）は横方向から見た図、（Ｃ）は加工溝の断面拡大
図である。（Ａ）において型材１０は円筒ロール１１に
取り付けられ回転し、溝仮構バイト１２によって旋削加
工を施される。（Ｂ）に示すように型材１０の表面に溝
が加工される。FIG. 6 is a process diagram showing a conventional die turning process. FIG. 6A is a view seen from the end face direction of a cylindrical roll.
(B) is a view seen from the lateral direction, and (C) is an enlarged cross-sectional view of the processed groove. In (A), the mold material 10 is attached to a cylindrical roll 11 and rotated, and is subjected to a turning process by a groove temporary bite 12. As shown in (B), grooves are formed on the surface of the mold material 10.
【０００４】[0004]
【発明が解決しようとする課題】この従来の透過型スク
リーン金型の製造方法は、型材に薄板を用いているため
型材自身に製造時の圧延工程における残留応力または表
面硬化が存在し、弾性限度内で巻き付けたとしても、旋
削加工によって型材自身の加工面と非加工面、即ち表面
と裏面での残留応力のバランスが崩れてしまうことによ
る反りが発生し、完全な平坦を得ることは困難である。
また特開平４−５３６４２号公報で記載されているよう
に薄板状の型材ではハンドリング・強度等に問題がある
ため補強板に接着することが、平坦性を得るためにも必
要不可欠となり、その際貼り付け工程や加工工程におい
て加工溝に直接外力が加わり加工溝が変形することがあ
る。このような加工溝の変形問題はピッチが微細になる
ほど顕著に現れる。In this conventional method for manufacturing a transmissive screen mold, since a thin plate is used as the mold material, residual stress or surface hardening in the rolling process at the time of manufacture exists in the mold material itself, and the elastic limit is reached. Even if it is wound inside, warping occurs due to the balance of residual stress on the machined surface and the non-machined surface of the mold itself, that is, the front surface and the back surface, is broken by turning, and it is difficult to obtain perfect flatness. is there.
Further, as described in Japanese Patent Application Laid-Open No. 4-53642, since a thin plate-shaped material has problems in handling, strength, etc., it is indispensable to bond it to the reinforcing plate in order to obtain flatness. An external force may be directly applied to the processing groove in the attaching step or the processing step to deform the processing groove. The problem of the deformation of the processed groove becomes more remarkable as the pitch becomes finer.
【０００５】本発明の目的は、薄板の透過型スクリーン
金型に関して、ハンドリング・強度確保のための補強板
接着工程において、加工溝の変形を防ぎ、平坦度を高め
る製造方法を提供することにある。SUMMARY OF THE INVENTION An object of the present invention is to provide a manufacturing method for a thin transmissive screen die, which prevents deformation of a working groove and enhances flatness in a step of adhering a reinforcing plate for handling and securing strength. .
【０００６】[0006]
【課題を解決するための手段】本発明によれば、少なく
とも片面にレンチキュラレンズまたはリニアフレネンレ
ンズ等を複数連続配置してなる透過型スクリーン金型に
関し、円筒ロールに薄板を巻き付け旋削加工を施し、次
に金型加工後加工面に紫外線硬化樹脂膜を保護膜として
形成させることを特徴とする透過型スクリーン金型の製
造方法が得られる。According to the present invention, there is provided a transmission screen mold comprising a plurality of lenticular lenses, linear Fresnel lenses, etc. arranged continuously on at least one surface thereof. Then, a method for manufacturing a transmissive screen die is obtained, which is characterized by forming an ultraviolet curable resin film as a protective film on the processed surface after die processing.
【０００７】[0007]
【実施例】次に、本発明について図面を参照して説明す
る。Next, the present invention will be described with reference to the drawings.
【０００８】図１は本発明による紫外線硬化樹脂膜形成
工程図であり、（Ａ），（Ｂ），（Ｃ）は図６の
（Ａ），（Ｂ），（Ｃ）に対応している。図６に示した
従来技術による旋削加工が終了した後、型材１０及び円
筒ロール１１の下部を紫外線硬化樹脂液１３を満たした
漕１４に浸漬する。型材１０及び円筒ロール１１を回転
させることにより、型材１０の表面即ち加工面に紫外線
硬化樹脂液１３が連続して付着し、上部紫外線ランプ１
５近傍で硬化し膜が形成される。このような工程を連続
して行うことにより型材１０の表面全体に紫外線硬化樹
脂膜１６が形成される。紫外線ランプ１５は（Ｂ）に示
すように長管タイプを用いる。（Ｃ）に示すように紫外
線硬化樹脂膜１６の表面はこの状態では完全な平滑では
ない。FIG. 1 is a process diagram of forming an ultraviolet curable resin film according to the present invention, and (A), (B) and (C) correspond to (A), (B) and (C) of FIG. . After the turning according to the conventional technique shown in FIG. 6 is completed, the lower parts of the mold material 10 and the cylindrical roll 11 are immersed in a bath 14 filled with the ultraviolet curable resin liquid 13. By rotating the mold material 10 and the cylindrical roll 11, the ultraviolet curable resin liquid 13 continuously adheres to the surface of the mold material 10, that is, the processed surface, and the upper ultraviolet lamp 1
It hardens in the vicinity of 5 to form a film. The ultraviolet curable resin film 16 is formed on the entire surface of the mold material 10 by continuously performing such steps. The ultraviolet lamp 15 uses a long tube type as shown in FIG. As shown in (C), the surface of the ultraviolet curable resin film 16 is not perfectly smooth in this state.
【０００９】図２は本発明による紫外線硬化樹脂膜旋削
加工を示す工程図であり、（Ａ），（Ｂ），（Ｃ）は図
１の（Ａ），（Ｂ），（Ｃ）に対応する。図で硬化した
紫外線硬化樹脂膜１６が形成された型材１０および円筒
ロール１１を回転させ平滑加工バイト１７によって旋削
加工を行う。旋削加工後は（Ｃ）に示すように表面が平
滑な紫外線硬化樹脂膜１８が形成される。FIG. 2 is a process chart showing the turning process of the ultraviolet curable resin film according to the present invention, and (A), (B) and (C) correspond to (A), (B) and (C) of FIG. To do. The mold material 10 and the cylindrical roll 11 on which the ultraviolet-cured resin film 16 cured in the figure is rotated, and the smoothing tool 17 performs a turning process. After the turning process, the ultraviolet curable resin film 18 having a smooth surface is formed as shown in (C).
【００１０】図３は紫外線硬化樹脂膜１８が形成された
型材１０を円筒ロール１１から取り外した状態を示して
いる図である。図６の旋削加工によって型材１０の内部
応力のバランスが崩れ、反りが発生している状態を示し
ている。FIG. 3 is a view showing a state in which the mold material 10 on which the ultraviolet curable resin film 18 is formed is removed from the cylindrical roll 11. FIG. 6 shows a state in which the internal stress of the mold material 10 is unbalanced and warpage occurs due to the turning process.
【００１１】図４は紫外線硬化樹脂膜１８が形成された
型材１０を補強板１９に接着する工程を示す図である。
整直ローラ２０によって型材１０と補強板１９が密着す
るように接着を行う。FIG. 4 is a diagram showing a step of adhering the mold material 10 on which the ultraviolet curable resin film 18 is formed to the reinforcing plate 19.
Bonding is performed by the straightening roller 20 so that the mold material 10 and the reinforcing plate 19 are in close contact with each other.
【００１２】図５は接着後、紫外線硬化樹脂膜１８を取
り除く工程を示している。この工程終了後透過型スクリ
ーン金型として用いることができる。FIG. 5 shows a step of removing the ultraviolet curable resin film 18 after the adhesion. After this step, it can be used as a transmissive screen mold.
【００１３】[0013]
【発明の効果】以上説明したように、本発明による透過
型スクリーン金型の製造方法は、加工面に紫外線硬化樹
脂膜を保護膜として形成させることにより、次工程の補
強板接着において加工溝の変形を防ぐことができる。ま
た補強板と型材がより密着して接着する事ができるため
平坦度が向上する。さらに平坦度の向上によって成形品
すなわちスクリーンを薄くすることができ、それによっ
てプロジェクタの画質が向上する。As described above, in the method for manufacturing a transmissive screen mold according to the present invention, the ultraviolet curable resin film is formed as a protective film on the processed surface, so that the processed groove can be formed in the next step of bonding the reinforcing plate. Deformation can be prevented. Further, since the reinforcing plate and the mold material can be more closely adhered to each other, the flatness is improved. Further, the improved flatness allows the molded product, that is, the screen, to be made thinner, thereby improving the image quality of the projector.
【図１】本発明における型材表面に紫外線硬化樹脂液を
付着・硬化させる工程の概要図であり、（Ａ）は端面方
向から見た図、（Ｂ）は横方向から見た図、（Ｃ）は加
工溝を示す図である。FIG. 1 is a schematic view of a step of adhering and curing an ultraviolet curable resin liquid on the surface of a mold material according to the present invention, (A) is a view seen from an end face direction, (B) is a view seen from a lateral direction, (C) ) Is a view showing a processed groove.
【図２】本発明における紫外線硬化樹脂膜の表面を平滑
加工する工程の概要図であり、（Ａ）は端面方向から見
た図、（Ｂ）は横方向から見た図、（Ｃ）は加工溝を示
す図である。2A and 2B are schematic views of a process of smoothing the surface of an ultraviolet curable resin film according to the present invention, in which FIG. 2A is a view seen from an end face direction, FIG. 2B is a view seen from a lateral direction, and FIG. It is a figure which shows a processed groove.
【図３】本発明において円筒ロールから型材を取り外し
たときの状態を示す図である。FIG. 3 is a diagram showing a state in which a mold material is removed from a cylindrical roll in the present invention.
【図４】本発明において型材を補強板に接着する工程を
示した図である。FIG. 4 is a diagram showing a step of adhering a mold member to a reinforcing plate in the present invention.
【図５】本発明において型材から紫外線硬化樹脂膜を取
り除いている工程を示した図である。FIG. 5 is a diagram showing a process of removing an ultraviolet curable resin film from a mold material in the present invention.
【図６】従来の円筒ロールに型材を巻き付け旋削加工を
施す工程を示した概要図であり、（Ａ）は端面方向から
見た図、（Ｂ）は横方向から見た図、（Ｃ）は加工溝を
示す図である。6A and 6B are schematic views showing a process of winding a mold material on a conventional cylindrical roll and performing a turning process, in which FIG. 6A is a view seen from an end face direction, FIG. 6B is a view seen from a lateral direction, and FIG. FIG. 4 is a diagram showing a processed groove.
１０ 型材 １１ 円筒ロール １２ 溝加工バイト １３ 紫外線硬化樹脂液 １４ 漕 １５ 紫外線ランプ １６ 紫外線硬化樹脂膜（硬化状態） １７ 平滑加工バイト １８ 紫外線硬化樹脂膜（表面平滑状態） １９ 補強板 ２０ 整直ローラ 10 Mold Material 11 Cylindrical Roll 12 Grooving Tool 13 UV Curing Resin Liquid 14 Tank 15 UV Lamp 16 UV Curing Resin Film (Curing State) 17 Smoothing Tool 18 UV Curing Resin Film (Smooth Surface State) 19 Reinforcement Plate 20 Aligning Roller
Claims (6)
施し、その後加工面に紫外線硬化樹脂膜を保護膜として
形成させることを特徴とする透過型スクリーン金型の製
造方法。1. A method for producing a transmissive screen mold, comprising winding a thin plate around a cylindrical roll, performing a turning process, and then forming an ultraviolet curable resin film on the processed surface as a protective film.
加工することを特徴とする請求項１の透過型スクリーン
金型の製造方法。2. The method for manufacturing a transmissive screen mold according to claim 1, wherein the surface is processed after forming the protective film.
筒ロールから取りはずし、補強板に接着することを特徴
とする請求項２の透過型スクリーン製造方法。3. The method for producing a transmissive screen according to claim 2, wherein after the protective film is smoothed, the thin plate is removed from the cylindrical roll and bonded to the reinforcing plate.
圧することを特徴とする請求項３の透過型スクリーン製
造方法。4. The method for producing a transmissive screen according to claim 3, wherein the surface is pressed by a roller when the adhesive is bonded to the reinforcing plate.
施す手段と、前記加工後加工面に紫外線硬化樹脂膜を保
護膜として形成させる保護膜形成手段とを具備する透過
型スクリーン金型の製造装置。5. An apparatus for manufacturing a transmissive screen mold, comprising: a means for winding a thin plate around a cylindrical roll for turning; and a protection film forming means for forming an ultraviolet curing resin film as a protection film on the processed surface after processing. .
側に配置された紫外線ランプと、円筒ロールの下側に配
置され円筒ロールを浸す紫外線硬化樹脂液を溜める漕と
を含む請求項５の透過型スクリーン金型の製造装置。6. The protective film forming means includes an ultraviolet lamp disposed above the cylindrical roll, and a tank disposed below the cylindrical roll for storing the ultraviolet curable resin liquid for immersing the cylindrical roll. Transmission screen mold manufacturing equipment.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| JP7177255A JP2894251B2 (en) | 1995-07-13 | 1995-07-13 | Method and apparatus for manufacturing transmission screen die |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| JP7177255A JP2894251B2 (en) | 1995-07-13 | 1995-07-13 | Method and apparatus for manufacturing transmission screen die |
Publications (2)
| Publication Number | Publication Date |
|---|---|
| JPH0929549A true JPH0929549A (en) | 1997-02-04 |
| JP2894251B2 JP2894251B2 (en) | 1999-05-24 |
Family
ID=16027884
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| JP7177255A Expired - Lifetime JP2894251B2 (en) | 1995-07-13 | 1995-07-13 | Method and apparatus for manufacturing transmission screen die |
Country Status (1)
| Country | Link |
|---|---|
| JP (1) | JP2894251B2 (en) |
Citations (3)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| JPS6219413A (en) * | 1985-07-19 | 1987-01-28 | Kyowa Gas Chem Ind Co Ltd | Manufacture of mold for synthetic resin lenticular lens |
| JPH0547045A (en) * | 1991-08-15 | 1993-02-26 | Dainippon Ink & Chem Inc | How to fix the stamper |
| JPH06155173A (en) * | 1992-11-18 | 1994-06-03 | Kuraray Co Ltd | Manufacture of metal mold for flat plate-shaped molded object |
-
1995
- 1995-07-13 JP JP7177255A patent/JP2894251B2/en not_active Expired - Lifetime
Patent Citations (3)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| JPS6219413A (en) * | 1985-07-19 | 1987-01-28 | Kyowa Gas Chem Ind Co Ltd | Manufacture of mold for synthetic resin lenticular lens |
| JPH0547045A (en) * | 1991-08-15 | 1993-02-26 | Dainippon Ink & Chem Inc | How to fix the stamper |
| JPH06155173A (en) * | 1992-11-18 | 1994-06-03 | Kuraray Co Ltd | Manufacture of metal mold for flat plate-shaped molded object |
Also Published As
| Publication number | Publication date |
|---|---|
| JP2894251B2 (en) | 1999-05-24 |
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Legal Events
| Date | Code | Title | Description |
|---|---|---|---|
| A01 | Written decision to grant a patent or to grant a registration (utility model) |
Free format text: JAPANESE INTERMEDIATE CODE: A01 Effective date: 19990202 |