JPH0326517U - - Google Patents
Info
- Publication number
- JPH0326517U JPH0326517U JP8825989U JP8825989U JPH0326517U JP H0326517 U JPH0326517 U JP H0326517U JP 8825989 U JP8825989 U JP 8825989U JP 8825989 U JP8825989 U JP 8825989U JP H0326517 U JPH0326517 U JP H0326517U
- Authority
- JP
- Japan
- Prior art keywords
- cylindrical body
- peripheral surface
- notch
- injection port
- protrusion band
- 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
- 238000002347 injection Methods 0.000 claims description 7
- 239000007924 injection Substances 0.000 claims description 7
- 238000005266 casting Methods 0.000 claims description 3
- 239000000178 monomer Substances 0.000 claims description 3
- 230000002093 peripheral effect Effects 0.000 claims 4
Landscapes
- Moulds For Moulding Plastics Or The Like (AREA)
- Casting Or Compression Moulding Of Plastics Or The Like (AREA)
Description
第１図は本考案のガスケツトの一実施例を示す
平面図、第２図は第１図中の−線断面図、第
３図は第２図の部分拡大断面図、第４図は第１図
の右側面図、第５図は第１図のガスケツトを使用
してプラスチツクレンズを成型するときの状態を
示す縦断面図、第６図は従来のレンズ注型を示す
縦断面図、第７図は従来のレンズ注型を示す斜視
図である。
符号の説明、１……ガスケツト、２……筒状体
、３……リング状突起帯、３ｃ……切欠き、５…
…モノマー注入口部、５ａ……注入口、５ｂ……
注入孔、６……上型モールド、７……下型モール
ド、８……キヤビテイ。
Fig. 1 is a plan view showing one embodiment of the gasket of the present invention, Fig. 2 is a cross-sectional view taken along the line - - in Fig. 1, Fig. 3 is a partially enlarged sectional view of Fig. 2, and Fig. 4 is a cross-sectional view taken along the line - 5 is a vertical cross-sectional view showing the state when a plastic lens is molded using the gasket shown in FIG. 1, FIG. 6 is a vertical cross-sectional view showing conventional lens casting, and FIG. The figure is a perspective view showing a conventional lens casting. Explanation of symbols, 1... Gasket, 2... Cylindrical body, 3... Ring-shaped projection band, 3c... Notch, 5...
...Monomer injection port, 5a...Injection port, 5b...
Injection hole, 6... Upper mold, 7... Lower mold, 8... Cavity.
Claims (1)
状突起帯を有し、この突起帯の上面及び下面はそ
れぞれ上型モールドの周縁下面及び下型モールド
の周縁上面が当接可能に形成され、前記筒状体の
内周面で前記２つのモールドを挟持可能に形成す
ると共に前記リング状突起帯の一部に切欠き部が
形成され、この切欠き部に隣接する前記筒状体の
外周面側に注入口を有し且つ前記筒状体の厚みよ
り薄い成型厚みを有するモノマー注入口部が形成
され、このモノマー注入口部と前記切欠き部とを
前記筒状体に形成された注入孔を介して連通した
ことを特徴とするプラスチツクレンズ注型ガスケ
ツト。 The inner wall surface of the cylindrical body has a ring-shaped protrusion band along its circumferential direction, and the upper and lower surfaces of the protrusion band are formed so that the lower peripheral surface of the upper mold and the upper peripheral surface of the lower mold can abut, respectively. The inner peripheral surface of the cylindrical body is formed so that the two molds can be held between them, and a notch is formed in a part of the ring-shaped protrusion band, and the cylindrical body adjacent to this notch is A monomer injection port having an injection port on the outer peripheral surface side and having a molded thickness thinner than the thickness of the cylindrical body is formed, and the monomer injection port and the notch are formed in the cylindrical body. A plastic lens casting gasket characterized by communication through an injection hole.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| JP8825989U JPH0639951Y2 (en) | 1989-07-27 | 1989-07-27 | Plastic lens casting gasket |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| JP8825989U JPH0639951Y2 (en) | 1989-07-27 | 1989-07-27 | Plastic lens casting gasket |
Publications (2)
| Publication Number | Publication Date |
|---|---|
| JPH0326517U true JPH0326517U (en) | 1991-03-18 |
| JPH0639951Y2 JPH0639951Y2 (en) | 1994-10-19 |
Family
ID=31637882
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| JP8825989U Expired - Lifetime JPH0639951Y2 (en) | 1989-07-27 | 1989-07-27 | Plastic lens casting gasket |
Country Status (1)
| Country | Link |
|---|---|
| JP (1) | JPH0639951Y2 (en) |
Cited By (3)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| WO2002055893A1 (en) * | 2001-01-12 | 2002-07-18 | Teruo Nakagami | Tightening structure for locking and nut and washer for the tightening structure |
| JP2009234111A (en) * | 2008-03-27 | 2009-10-15 | Hoya Corp | Lens forming gasket, lens forming device, and lens forming method |
| WO2010098466A1 (en) * | 2009-02-27 | 2010-09-02 | Hoya株式会社 | Mold and method for producing plastic lens |
Families Citing this family (3)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| US7682531B2 (en) * | 2002-04-08 | 2010-03-23 | Hoya Corporation | Process for producing optical member |
| WO2004062872A1 (en) | 2003-01-14 | 2004-07-29 | Hoya Corporation | Device and method for assembling mold for forming plastic lens |
| US7842203B2 (en) | 2003-10-31 | 2010-11-30 | Hoya Corporation | Gasket for molding plastic lens |
-
1989
- 1989-07-27 JP JP8825989U patent/JPH0639951Y2/en not_active Expired - Lifetime
Cited By (3)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| WO2002055893A1 (en) * | 2001-01-12 | 2002-07-18 | Teruo Nakagami | Tightening structure for locking and nut and washer for the tightening structure |
| JP2009234111A (en) * | 2008-03-27 | 2009-10-15 | Hoya Corp | Lens forming gasket, lens forming device, and lens forming method |
| WO2010098466A1 (en) * | 2009-02-27 | 2010-09-02 | Hoya株式会社 | Mold and method for producing plastic lens |
Also Published As
| Publication number | Publication date |
|---|---|
| JPH0639951Y2 (en) | 1994-10-19 |
Similar Documents
Legal Events
| Date | Code | Title | Description |
|---|---|---|---|
| EXPY | Cancellation because of completion of term |