JPH0516167A - Metal mold for molding data recording disk - Google Patents
Metal mold for molding data recording diskInfo
- Publication number
- JPH0516167A JPH0516167A JP19616991A JP19616991A JPH0516167A JP H0516167 A JPH0516167 A JP H0516167A JP 19616991 A JP19616991 A JP 19616991A JP 19616991 A JP19616991 A JP 19616991A JP H0516167 A JPH0516167 A JP H0516167A
- Authority
- JP
- Japan
- Prior art keywords
- outer peripheral
- peripheral edge
- holder
- cavity
- recess
- 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
Landscapes
- Moulds For Moulding Plastics Or The Like (AREA)
- Manufacturing Optical Record Carriers (AREA)
Abstract
Description
【０００１】[0001]
【産業上の利用分野】この発明は、光ディスクなどの情
報記録円盤の成形金型に関するものである。BACKGROUND OF THE INVENTION 1. Field of the Invention The present invention relates to a molding die for an information recording disk such as an optical disc.
【０００２】[0002]
【従来の技術】この種の成形金型では、金型のキャビテ
ィ面に配設したスタンパの外周面を、キャビティ用の凹
所の外側内に嵌合した外周ホルダーにより押さえてい
る。2. Description of the Related Art In a molding die of this type, the outer peripheral surface of a stamper disposed on the cavity surface of the mold is pressed by an outer peripheral holder fitted inside the cavity recess.
【０００３】この外周ホルダーは、内周縁がキャビティ
外周縁を形成するドーナツ状のもので、成形品であるデ
ィスクの真円度維持のため、極めて高精度な同芯度をも
って組付けられることが望まれている。This outer peripheral holder is of a donut shape whose inner peripheral edge forms the outer peripheral edge of the cavity, and it is desirable that the outer peripheral holder is assembled with extremely high precision concentricity in order to maintain the circularity of the molded disc. It is rare.
【０００４】そのようなことから、外周ホルダーは上記
凹所の内周縁との間に微細なクリアランスを設定して凹
所内に嵌込まれ、複数箇所をボルト付けして金型に固定
してある。For this reason, the outer peripheral holder is fitted in the recess with a fine clearance set between the outer peripheral holder and the inner peripheral edge of the recess, and is bolted at a plurality of positions to be fixed to the mold. .
【０００５】[0005]
【発明が解決しようとする課題】このような成形金型に
おける課題は、金型側の凹所の内径と外周ホルダーの外
径との差が極めて僅かであるために、そこにクリアラン
スが設定してあっても、スタンパの交換時の外周ホルダ
ーの着脱に手数が掛かり、また嵌合した後の位置決めも
困難なことである。The problem with such a molding die is that the clearance is set there because the difference between the inner diameter of the recess on the die side and the outer diameter of the outer peripheral holder is extremely small. However, it is troublesome to attach and detach the outer peripheral holder when replacing the stamper, and it is difficult to position the outer holder after fitting.
【０００６】特に温調のため加熱すると、着脱は更に困
難となるので、従来では組付け精度と交換に際する操作
性を妥協する寸法を設定して、外周ホルダーの組付けを
行っていた。[0006] Particularly, when heating due to temperature control, it becomes more difficult to attach / detach. Therefore, conventionally, the outer peripheral holder was assembled by setting a dimension that compromises the assembly accuracy and the operability during replacement.
【０００７】この発明は上記従来の課題を解決するため
に考えられたものであって、その目的は、極めて簡単な
手段により外周ホルダーの着脱及び位置決めを容易に行
うことができる新たな構成のスタンパ外周押えを提供す
ることにある。The present invention has been conceived in order to solve the above-mentioned conventional problems, and an object thereof is a stamper having a new structure in which the outer peripheral holder can be easily attached and detached and positioned by an extremely simple means. It is to provide a peripheral presser foot.
【０００８】[0008]
【課題を解決するための手段】上記目的によるこの発明
の特徴は、金型に設けたキャビティ用の凹所の外側内に
嵌合位置してキャビティ面に配設したスタンパの外周面
を押さえ、かつ内周縁がキャビティ外周縁を成形するド
ーナツ状の外周ホルダーを備え、その外周ホルダーの外
周縁と、上記凹所の内周縁とに所要長さのクリアランス
形成用の複数の切欠段部を一定間隔ごとに位置を同じく
して設けてなることにある。According to the features of the present invention according to the above object, an outer peripheral surface of a stamper disposed on a cavity surface is fitted at a position fitted inside an outer cavity of a cavity provided in a mold, Further, the inner peripheral edge is provided with a donut-shaped outer peripheral holder for molding the outer peripheral edge of the cavity, and a plurality of notched step portions for forming a clearance of a required length are provided at a constant interval between the outer peripheral edge of the outer peripheral holder and the inner peripheral edge of the recess. The position is the same for each.
【０００９】また上記切欠段部のコーナーは面取りされ
ていることを他の特徴とするものでもある。Another feature is that the corners of the notched step portion are chamfered.
【００１０】[0010]
【作 用】上記構成では、一定間隔ごとの切欠段部によ
って、外周ホルダーの外周縁と凹所の内周縁は凹凸縁に
形成されていることから、切欠段部の位置を相互にずら
せると、双方の切欠段部の間の凸部が相手方の切欠段部
に位置し、凹所の内周縁と外周ホルダーの外周縁との間
に大きなクリアランスが生ずる。[Operation] In the above configuration, since the outer peripheral edge of the outer peripheral holder and the inner peripheral edge of the recess are formed as uneven edges by the notched step portions at regular intervals, it is possible to shift the notch step portions from each other. The convex portion between the two notch steps is located at the other notch step, and a large clearance is generated between the inner peripheral edge of the recess and the outer peripheral edge of the outer peripheral holder.
【００１１】このクリアランスは、予め定められた位置
に外周ホルダーを戻すと失われて同位置の切欠段部とな
り、凸部同志は微細な設定クリアランスを隔てて対向位
置する。This clearance is lost when the outer peripheral holder is returned to a predetermined position and becomes a notch step portion at the same position, and the convex portions are opposed to each other with a minute set clearance.
【００１２】したがって、大きなクリアランスの下に外
周ホルダーの着脱ができ、また微細な設定クリアランス
の下に外周ホルダーの嵌合，位置決めと固定を行うこと
ができる。Therefore, the outer peripheral holder can be attached and detached under a large clearance, and the outer peripheral holder can be fitted, positioned and fixed under a finely set clearance.
【００１３】[0013]
【実施例】図中１は平面形状が円形のミラーブロック
で、背板２上の抱持盤３に嵌装してある。このミラーブ
ロック１の表側に上記抱持盤２によってキャビティ用の
凹所４が形成してある（図３参照）。DETAILED DESCRIPTION OF THE PREFERRED EMBODIMENTS Reference numeral 1 in the drawing denotes a mirror block having a circular plane shape, which is mounted on a holding board 3 on a back plate 2. A cavity 4 is formed on the front side of the mirror block 1 by the holding board 2 (see FIG. 3).
【００１４】またミラーブロック１の中央部にはスプル
ブッシュ５と、キャビティ面に当接したスタンパ６の内
周ホルダー７とが同心に嵌挿してある。A sprue bush 5 and an inner peripheral holder 7 of a stamper 6 which is in contact with the cavity surface are concentrically fitted in the central portion of the mirror block 1.
【００１５】上記凹所４の外側内には、上記スタンパ６
の外周面を押えるとともに、内周縁がキャビティ８の外
周縁を形成するドーナツ状の外周ホルダー９が、凹所内
周縁との間に微細（０．００５mm以下）なクリアランス
を設けて嵌込んであり、さらに複数箇所に施したボルト
１０により上記ミラーブロック３に固定してある。Inside the outside of the recess 4, the stamper 6 is provided.
A donut-shaped outer peripheral holder 9 whose inner peripheral edge forms the outer peripheral edge of the cavity 8 while pressing the outer peripheral surface of the recess, and is fitted with a fine clearance (0.005 mm or less) between the inner peripheral edge of the recess and Further, it is fixed to the mirror block 3 by bolts 10 provided at a plurality of points.
【００１６】この外周ホルダー９の外周縁と、上記凹所
４の内周縁とには、所要長さの複数の切欠段部１１，１
２が一定間隔ごとに位置を同じくして設けてあり、これ
により図３及び図４に示すように、外周ホルダー９の外
周縁と凹所４の内周縁とは、それぞれ凹凸縁に形成され
ている。The outer peripheral edge of the outer peripheral holder 9 and the inner peripheral edge of the recess 4 are provided with a plurality of notched step portions 11, 1 having a required length.
2 are provided at the same position at regular intervals, so that as shown in FIGS. 3 and 4, the outer peripheral edge of the outer peripheral holder 9 and the inner peripheral edge of the recess 4 are respectively formed as uneven edges. There is.
【００１７】図示の例では、切欠段部１１，１２を円周
方向の８箇所に２５°角の横巾にて等間隔に設けてお
り、またクリアランスとなる切欠段差は片側で０．１〜
０．０５mm程度の深さに形成してある。In the illustrated example, the notch step portions 11 and 12 are provided at eight positions in the circumferential direction at equal intervals with a horizontal width of 25 °, and the notch step serving as a clearance is 0.1 to 1 on one side.
It is formed to a depth of about 0.05 mm.
【００１８】このような設定では、切欠段部間の凸部４
ａ，９ａは、切欠段部１１，１２より横幅が小さいの
で、相互の位置を横にずらせると、図５に示すように、
互いに切欠段部の巾内に位置するようになり、また双方
の切欠段部１１，１２が交互に連なって、そこに切欠段
差による一連のクリアランス１３が生ずる。With such a setting, the protrusions 4 between the notch steps are formed.
Since the widths of a and 9a are smaller than that of the notched step portions 11 and 12, when the mutual positions are laterally displaced, as shown in FIG.
The notch step portions 11 and 12 are alternately located within the width of the notch step portion, and a series of clearances 13 due to the notch step are formed therein.
【００１９】このクリアランス１３は凹所内周縁とホル
ダー外周縁との間に設定された嵌め合いのための上記ク
リアランスよりも著しく大きいことから、その大きなク
リアランス１３を利用して、外周ホルダー９の着脱を行
うことができる。Since the clearance 13 is significantly larger than the clearance for fitting set between the inner peripheral edge of the recess and the outer peripheral edge of the holder, the large outer clearance 13 is used to attach and detach the outer peripheral holder 9. It can be carried out.
【００２０】この位置決めを手際よく高精度に行うに
は、予め凹所側と外周ホルダー側の凸部４ａ，９ａの中
央と、隣接した凹所側の切欠段部１２の中央とに位置決
めマーク１４，１５，１６を施し、この位置決めマーク
を基準として行うとよい。In order to perform this positioning efficiently and with high accuracy, the positioning marks 14 are preliminarily provided at the centers of the projections 4a and 9a on the recess side and the outer peripheral holder side and the center of the notch step 12 on the adjacent recess side. , 15 and 16 are applied, and this positioning mark is preferably used as a reference.
【００２１】外周ホルダー９の取付けに際しては、凹所
側の切欠段部１２に外周ホルダー９の凸部９ａを位置さ
せて凹所内に嵌込み、次に外周ホルダー９を回動して位
置決めマーク１４，１５が一致するところまで凸部９ａ
を横にずらせればよく、これによりミラーブロック３と
外周ホルダー９とに穿ったボルト孔１７，１８が一致す
るので、その位置を上記ボルト１０により固定すればよ
い。When mounting the outer peripheral holder 9, the convex portion 9a of the outer peripheral holder 9 is positioned in the notch step portion 12 on the concave side and fitted into the concave portion, and then the outer peripheral holder 9 is rotated to position the positioning mark 14. , 15 up to the point where they coincide
The bolt holes 17 and 18 formed in the mirror block 3 and the outer peripheral holder 9 are aligned with each other, so that their positions may be fixed by the bolts 10.
【００２２】またクリアランス１３によって、嵌込み時
に外周ホルダー９の位置がずれ、凸部４ａ，９ａが互い
に切欠段部１１，１２に入り込んだ状態では、外周ホル
ダー９の回動時にコーナーが当って回動しに難いが、予
めコーナーに面取りを施しておくと、そのような問題も
簡単に解決することができる。Further, when the outer peripheral holder 9 is displaced due to the clearance 13 and the convex portions 4a and 9a are inserted into the notched step portions 11 and 12, the corners are rotated when the outer peripheral holder 9 is rotated. It is difficult to move, but such a problem can be easily solved by chamfering the corners in advance.
【００２３】コーナーの面取りは両側に限らず、図６に
示すように、回動により互いに突き当たる側のコーナー
１１ａ，１２ａに面取りを施すだけでもよく、これら面
取りにより位置ずれが生じても、外周ホルダー９の定位
置への回動をスムーズになすことがてきる。The chamfering of the corners is not limited to both sides, and as shown in FIG. 6, it is sufficient to chamfer the corners 11a and 12a on the sides that abut each other by rotation. It is possible to smoothly rotate the 9 to the fixed position.
【００２４】また取外に際してしは、ボルト１０を外し
たのちに、外周ホルダー９を位置決めマーク１５が凹所
側の位置決めマーク１６と一致するところまで回動して
凸部９ａを横にずらせばよく、それにより双方の切欠段
部１１，１２が交互に連なって、切欠段差による一連の
クリアランス１３が生ずるので、そのクリアランス１３
を利用して簡単に取り出すことができる。In addition, at the time of removal, after removing the bolt 10, the outer peripheral holder 9 is rotated until the positioning mark 15 coincides with the positioning mark 16 on the recess side, and the convex portion 9a is laterally displaced. Of course, because of this, the notch step portions 11 and 12 are alternately connected, and a series of clearances 13 due to the notch steps are generated.
You can easily take it out using.
【００２５】[0025]
【発明の効果】この発明は上述のように、キャビティ用
の凹所の外側内に嵌合位置したドーナツ状の外周ホルダ
ーの外周縁と、上記凹所の内周縁とに所要長さのクリア
ランス形成用の複数の切欠段部を一定間隔ごとに位置を
同じくして設け、切欠段部の位置を相互にずらせた際に
生ずる大きなクリアランスを利用して、外周ホルダーの
着脱を行えるようにしたので、微細な嵌め合い時のクリ
アランスの下に行う場合よりもそれらの作業が容易にで
きる。As described above, according to the present invention, a clearance having a required length is formed between the outer peripheral edge of the donut-shaped outer peripheral holder fitted inside the outer side of the cavity recess and the inner peripheral edge of the recess. Since a plurality of notch steps for use are provided at the same position at regular intervals and the large clearance generated when the positions of the notch steps are mutually displaced, the outer peripheral holder can be attached and detached. These operations can be performed more easily than when performed under the clearance for fine fitting.
【００２６】しかも位置決め時の精度も操作性を除外し
て設定できるので、位置決め精度も従来より向上させる
ことができる。Moreover, since the positioning accuracy can be set excluding the operability, the positioning accuracy can be improved as compared with the prior art.
【００２７】また外周ホルダーの外周縁と凹所の内周縁
とに切欠段部を設けるだけでよいから、構造が特に複雑
となるようなこともなく、着脱及び位置決めに特別な操
作も必要ないので、従来よりも短時間で外周ホルダーの
着脱を完了することができるなどの特長を有する。Further, since it is only necessary to provide the notched step portions on the outer peripheral edge of the outer peripheral holder and the inner peripheral edge of the recess, the structure is not particularly complicated, and no special operation is required for attachment / detachment and positioning. Also, it has the feature that the attachment and detachment of the outer peripheral holder can be completed in a shorter time than before.
【図１】この発明のスタンパ外周押えを備えた情報記録
円盤の成形金型の縦断側面図である。FIG. 1 is a vertical cross-sectional side view of a molding die for an information recording disk provided with a stamper outer peripheral presser according to the present invention.
【図２】同上の平面図図である。FIG. 2 is a plan view of the above.
【図３】外周ホルダーを除いた情報記録円盤の成形金型
の平面図である。FIG. 3 is a plan view of a molding die for an information recording disc excluding an outer peripheral holder.
【図４】外周ホルダーの平面図である。FIG. 4 is a plan view of an outer circumference holder.
【図５】外周ホルダーの装着状態を示す部分平面図であ
る。FIG. 5 is a partial plan view showing a mounted state of an outer peripheral holder.
【図６】コーナーに面取りを施した場合の装着状態を示
す部分平面図である。FIG. 6 is a partial plan view showing a mounted state when a corner is chamfered.
１ ミラーブロック ２ 背板 ３ 抱持盤 ４ キャビティ形成用の凹所 ５ スプルブッシュ ６ スタンパ ７ スタンパの内周ホルダー ８ キャビティ ９ 外周ホルダー １０ ボルト １１ 外周ホルダー側の切欠段部 １２ 凹所側の切欠段部 １３ クリアランス １４，１５，１６ 位置決めマーク 1 mirror block 2 backboard 3 holding board 4 Recess for cavity formation 5 sprue bush 6 stampers 7 Stamper inner circumference holder 8 cavities 9 Peripheral holder 10 volts 11 Notch step on outer peripheral holder side 12 Notch step on the recess side 13 clearance 14,15,16 Positioning mark
Claims (2)
内に嵌合位置してキャビティ面に配設したスタンパの外
周面を押さえ、かつ内周縁がキャビティ外周縁を成形す
るドーナツ状の外周ホルダーを備え、その外周ホルダー
の外周縁と、上記凹所の内周縁とに所要長さのクリアラ
ンス形成用の複数の切欠段部を一定間隔ごとに位置を同
じくして設けてなることを特徴とする情報記録円盤用成
形金型。1. A donut shape in which the outer peripheral surface of a stamper disposed in the cavity surface is fitted into the outer side of a cavity recess provided in a mold and the inner peripheral edge forms the outer peripheral edge of the cavity. An outer peripheral holder is provided, and a plurality of notched step portions for forming a clearance having a required length are provided at the same intervals on the outer peripheral edge of the outer peripheral holder and the inner peripheral edge of the recess at regular intervals. Mold for information recording discs.
ことを特徴とする請求項１記載の情報記録円盤用成形金
型。2. The molding die for an information recording disk according to claim 1, wherein the corner of the notch step portion is chamfered.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| JP3196169A JPH07118997B2 (en) | 1991-07-11 | 1991-07-11 | Mold for information recording disk |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| JP3196169A JPH07118997B2 (en) | 1991-07-11 | 1991-07-11 | Mold for information recording disk |
Publications (2)
| Publication Number | Publication Date |
|---|---|
| JPH0516167A true JPH0516167A (en) | 1993-01-26 |
| JPH07118997B2 JPH07118997B2 (en) | 1995-12-20 |
Family
ID=16353357
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| JP3196169A Expired - Fee Related JPH07118997B2 (en) | 1991-07-11 | 1991-07-11 | Mold for information recording disk |
Country Status (1)
| Country | Link |
|---|---|
| JP (1) | JPH07118997B2 (en) |
Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| WO2010086986A1 (en) * | 2009-01-29 | 2010-08-05 | パイオニア株式会社 | Mold and method for manufacturing the same |
Citations (3)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| JPS63130320A (en) * | 1986-11-20 | 1988-06-02 | Meiki Co Ltd | Disk molding mold |
| JPS646267U (en) * | 1987-06-30 | 1989-01-13 | ||
| JPH02295725A (en) * | 1989-05-09 | 1990-12-06 | Seiko Giken:Kk | Mold apparatus for molding disc |
-
1991
- 1991-07-11 JP JP3196169A patent/JPH07118997B2/en not_active Expired - Fee Related
Patent Citations (3)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| JPS63130320A (en) * | 1986-11-20 | 1988-06-02 | Meiki Co Ltd | Disk molding mold |
| JPS646267U (en) * | 1987-06-30 | 1989-01-13 | ||
| JPH02295725A (en) * | 1989-05-09 | 1990-12-06 | Seiko Giken:Kk | Mold apparatus for molding disc |
Cited By (4)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| WO2010086986A1 (en) * | 2009-01-29 | 2010-08-05 | パイオニア株式会社 | Mold and method for manufacturing the same |
| JP4608028B2 (en) * | 2009-01-29 | 2011-01-05 | パイオニア株式会社 | Mold and manufacturing method thereof |
| US8192194B2 (en) | 2009-01-29 | 2012-06-05 | Pioneer Corporation | Mold and method for manufacturing the same |
| JPWO2010086986A1 (en) * | 2009-01-29 | 2012-07-26 | パイオニア株式会社 | Mold and manufacturing method thereof |
Also Published As
| Publication number | Publication date |
|---|---|
| JPH07118997B2 (en) | 1995-12-20 |
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