JPS62185022U - - Google Patents
Info
- Publication number
- JPS62185022U JPS62185022U JP7363086U JP7363086U JPS62185022U JP S62185022 U JPS62185022 U JP S62185022U JP 7363086 U JP7363086 U JP 7363086U JP 7363086 U JP7363086 U JP 7363086U JP S62185022 U JPS62185022 U JP S62185022U
- Authority
- JP
- Japan
- Prior art keywords
- mold
- cavity wall
- stamper
- molds
- wall surface
- 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 6
- 239000007924 injection Substances 0.000 claims description 6
- 230000003287 optical effect Effects 0.000 claims description 5
- 238000000465 moulding Methods 0.000 claims description 4
- 239000011347 resin Substances 0.000 claims description 3
- 229920005989 resin Polymers 0.000 claims description 3
- 238000001746 injection moulding Methods 0.000 claims 1
- 238000013022 venting Methods 0.000 claims 1
Landscapes
- Manufacturing Optical Record Carriers (AREA)
- Moulds For Moulding Plastics Or The Like (AREA)
- Injection Moulding Of Plastics Or The Like (AREA)
Description
第１図は本考案に係る光デイスク成形用の射出
成形金型の全体構成を示す部分断面図、第２図は
第１図に示すスタンパ押さえの形状を拡大して示
す平面図、第３図は第１図に示す射出成形金型の
要部を拡大して示す部分断面図、第４図は従来の
光デイスク成形用の射出成形金型の要部を示す部
分断面図、第５図は第４図に示すスタンパ押さえ
の平面図である。
２０……射出成形金型、２５，２６……金型、
３０……溶融樹脂、３３……スタンパ、３４……
スタンパ押さえ、３５……外周部、３６……キヤ
ビテイ壁面、４０……キヤビテイ壁面、４１……
間隙。
FIG. 1 is a partial sectional view showing the overall configuration of an injection mold for molding an optical disk according to the present invention, FIG. 2 is a plan view showing an enlarged shape of the stamper holder shown in FIG. 1, and FIG. 1 is an enlarged partial cross-sectional view of the main parts of the injection mold shown in FIG. 1, FIG. 4 is a partial cross-sectional view showing the main parts of a conventional injection mold for molding optical disks, and FIG. 5 is a plan view of the stamper holder shown in FIG. 4. FIG. 20... Injection mold, 25, 26... Mold,
30... Molten resin, 33... Stamper, 34...
Stamper holder, 35...Outer periphery, 36...Cavity wall surface, 40...Cavity wall surface, 41...
gap.
Claims (1)
周部を周回り方向に巡りつつその厚さ方向から一
対の金型の一方の金型のキヤビテイ壁面に押圧す
るスタンパ押さえを、該一対の金型と協働してキ
ヤビテイを構成するようにして前記一方の金型に
取付け、型締め圧力を受けさせつつ溶融樹脂をキ
ヤビテイに充填して光デイスクを射出成形する光
デイスク成形用の射出成形金型において、 前記スタンパ押さえのうち前記スタンパを前記
一方の金型のキヤビテイ壁面に押圧する押圧部が
、前記溶融樹脂の充填に伴つて他方の金型のキヤ
ビテイ壁面に向かつて撓み得るように、前記他方
の金型のキヤビテイ壁面と前記押圧部との間に周
回り方向に伸びる間隙を形成し、該間隙をガス抜
き通路に兼用させたことを特徴とする光デイスク
成形用の射出成形金型。[Scope of Claim for Utility Model Registration] A stamper holder that presses against the cavity wall of one of a pair of molds from the thickness direction while circumferentially circumferentially around the outer circumference of a stamper for transferring recorded information to an optical disk. is attached to one of the molds so as to form a cavity in cooperation with the pair of molds, and the cavity is filled with molten resin while being subjected to mold clamping pressure to form an optical disc by injection molding. In an injection mold for molding, a pressing part of the stamper holder that presses the stamper against the cavity wall surface of the one mold moves toward the cavity wall surface of the other mold as the molten resin is filled. For optical disk molding, a gap extending in the circumferential direction is formed between the cavity wall surface of the other mold and the pressing part so as to be flexible, and the gap is also used as a gas venting passage. injection mold.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| JP1986073630U JPH065142Y2 (en) | 1986-05-16 | 1986-05-16 | Injection mold for optical disk molding |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| JP1986073630U JPH065142Y2 (en) | 1986-05-16 | 1986-05-16 | Injection mold for optical disk molding |
Publications (2)
| Publication Number | Publication Date |
|---|---|
| JPS62185022U true JPS62185022U (en) | 1987-11-25 |
| JPH065142Y2 JPH065142Y2 (en) | 1994-02-09 |
Family
ID=30918129
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| JP1986073630U Expired - Lifetime JPH065142Y2 (en) | 1986-05-16 | 1986-05-16 | Injection mold for optical disk molding |
Country Status (1)
| Country | Link |
|---|---|
| JP (1) | JPH065142Y2 (en) |
Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| JPH03278339A (en) * | 1989-03-31 | 1991-12-10 | Hitachi Maxell Ltd | Production of optical recording medium and transparent substrate for optical recording medium and mold for transparent substrate for optical recording medium |
Citations (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| JPS60115417A (en) * | 1983-11-28 | 1985-06-21 | Meiki Co Ltd | Mold assembly of injection molding machine |
-
1986
- 1986-05-16 JP JP1986073630U patent/JPH065142Y2/en not_active Expired - Lifetime
Patent Citations (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| JPS60115417A (en) * | 1983-11-28 | 1985-06-21 | Meiki Co Ltd | Mold assembly of injection molding machine |
Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| JPH03278339A (en) * | 1989-03-31 | 1991-12-10 | Hitachi Maxell Ltd | Production of optical recording medium and transparent substrate for optical recording medium and mold for transparent substrate for optical recording medium |
Also Published As
| Publication number | Publication date |
|---|---|
| JPH065142Y2 (en) | 1994-02-09 |
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