JPS6082314A - Manufacture of disk - Google Patents
Manufacture of diskInfo
- Publication number
- JPS6082314A JPS6082314A JP19030383A JP19030383A JPS6082314A JP S6082314 A JPS6082314 A JP S6082314A JP 19030383 A JP19030383 A JP 19030383A JP 19030383 A JP19030383 A JP 19030383A JP S6082314 A JPS6082314 A JP S6082314A
- Authority
- JP
- Japan
- Prior art keywords
- disk
- resin
- mold
- injected
- guide hole
- 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 description 12
- 238000002347 injection Methods 0.000 claims abstract description 13
- 239000007924 injection Substances 0.000 claims abstract description 13
- 238000000465 moulding Methods 0.000 claims abstract description 9
- 229920005992 thermoplastic resin Polymers 0.000 claims abstract description 5
- 229920005989 resin Polymers 0.000 abstract description 9
- 239000011347 resin Substances 0.000 abstract description 9
- 230000003287 optical effect Effects 0.000 description 11
- 239000000463 material Substances 0.000 description 4
- 238000005498 polishing Methods 0.000 description 3
- 230000005389 magnetism Effects 0.000 description 2
- 238000000034 method Methods 0.000 description 2
- 230000003213 activating effect Effects 0.000 description 1
- XAGFODPZIPBFFR-UHFFFAOYSA-N aluminium Chemical compound [Al] XAGFODPZIPBFFR-UHFFFAOYSA-N 0.000 description 1
- 229910052782 aluminium Inorganic materials 0.000 description 1
- 230000000694 effects Effects 0.000 description 1
- 239000003365 glass fiber Substances 0.000 description 1
- 239000012778 molding material Substances 0.000 description 1
- 230000002093 peripheral effect Effects 0.000 description 1
- 238000012805 post-processing Methods 0.000 description 1
- 238000003825 pressing Methods 0.000 description 1
- 239000002994 raw material Substances 0.000 description 1
Classifications
-
- B—PERFORMING OPERATIONS; TRANSPORTING
- B29—WORKING OF PLASTICS; WORKING OF SUBSTANCES IN A PLASTIC STATE IN GENERAL
- B29C—SHAPING OR JOINING OF PLASTICS; SHAPING OF MATERIAL IN A PLASTIC STATE, NOT OTHERWISE PROVIDED FOR; AFTER-TREATMENT OF THE SHAPED PRODUCTS, e.g. REPAIRING
- B29C45/00—Injection moulding, i.e. forcing the required volume of moulding material through a nozzle into a closed mould; Apparatus therefor
- B29C45/17—Component parts, details or accessories; Auxiliary operations
- B29C45/26—Moulds
- B29C45/27—Sprue channels ; Runner channels or runner nozzles
- B29C45/2701—Details not specific to hot or cold runner channels
-
- B—PERFORMING OPERATIONS; TRANSPORTING
- B29—WORKING OF PLASTICS; WORKING OF SUBSTANCES IN A PLASTIC STATE IN GENERAL
- B29C—SHAPING OR JOINING OF PLASTICS; SHAPING OF MATERIAL IN A PLASTIC STATE, NOT OTHERWISE PROVIDED FOR; AFTER-TREATMENT OF THE SHAPED PRODUCTS, e.g. REPAIRING
- B29C45/00—Injection moulding, i.e. forcing the required volume of moulding material through a nozzle into a closed mould; Apparatus therefor
- B29C45/17—Component parts, details or accessories; Auxiliary operations
- B29C45/46—Means for plasticising or homogenising the moulding material or forcing it into the mould
- B29C45/56—Means for plasticising or homogenising the moulding material or forcing it into the mould using mould parts movable during or after injection, e.g. injection-compression moulding
- B29C45/5605—Rotatable mould parts
-
- B—PERFORMING OPERATIONS; TRANSPORTING
- B29—WORKING OF PLASTICS; WORKING OF SUBSTANCES IN A PLASTIC STATE IN GENERAL
- B29C—SHAPING OR JOINING OF PLASTICS; SHAPING OF MATERIAL IN A PLASTIC STATE, NOT OTHERWISE PROVIDED FOR; AFTER-TREATMENT OF THE SHAPED PRODUCTS, e.g. REPAIRING
- B29C45/00—Injection moulding, i.e. forcing the required volume of moulding material through a nozzle into a closed mould; Apparatus therefor
- B29C45/17—Component parts, details or accessories; Auxiliary operations
- B29C45/26—Moulds
- B29C45/27—Sprue channels ; Runner channels or runner nozzles
- B29C45/2701—Details not specific to hot or cold runner channels
- B29C45/2703—Means for controlling the runner flow, e.g. runner switches, adjustable runners or gates
- B29C2045/2706—Means for controlling the runner flow, e.g. runner switches, adjustable runners or gates rotatable sprue bushings or runner channels for controlling runner flow in one cavity
-
- B—PERFORMING OPERATIONS; TRANSPORTING
- B29—WORKING OF PLASTICS; WORKING OF SUBSTANCES IN A PLASTIC STATE IN GENERAL
- B29C—SHAPING OR JOINING OF PLASTICS; SHAPING OF MATERIAL IN A PLASTIC STATE, NOT OTHERWISE PROVIDED FOR; AFTER-TREATMENT OF THE SHAPED PRODUCTS, e.g. REPAIRING
- B29C45/00—Injection moulding, i.e. forcing the required volume of moulding material through a nozzle into a closed mould; Apparatus therefor
- B29C45/17—Component parts, details or accessories; Auxiliary operations
- B29C45/26—Moulds
- B29C45/263—Moulds with mould wall parts provided with fine grooves or impressions, e.g. for record discs
-
- B—PERFORMING OPERATIONS; TRANSPORTING
- B29—WORKING OF PLASTICS; WORKING OF SUBSTANCES IN A PLASTIC STATE IN GENERAL
- B29L—INDEXING SCHEME ASSOCIATED WITH SUBCLASS B29C, RELATING TO PARTICULAR ARTICLES
- B29L2017/00—Carriers for sound or information
- B29L2017/001—Carriers of records containing fine grooves or impressions, e.g. disc records for needle playback, cylinder records
- B29L2017/003—Records or discs
- B29L2017/005—CD''s, DVD''s
Landscapes
- Engineering & Computer Science (AREA)
- Manufacturing & Machinery (AREA)
- Mechanical Engineering (AREA)
- Moulds For Moulding Plastics Or The Like (AREA)
- Casting Or Compression Moulding Of Plastics Or The Like (AREA)
- Manufacturing Of Magnetic Record Carriers (AREA)
- Manufacturing Optical Record Carriers (AREA)
Abstract
Description
【発明の詳細な説明】
（イ）発明の技術分野
この発明は、音響や画像等を再生する際に使用されるよ
うなオーディオディスクやビデオディスクに関し、さら
に詳しくは樹脂原料を素材として効率よく製造すること
ができるディスクの製造方法に関する。Detailed Description of the Invention (a) Technical Field of the Invention The present invention relates to audio discs and video discs used to reproduce sounds, images, etc. The present invention relates to a method of manufacturing a disc that can be used.
（ロ）発明の背景
上述例のようなディスクは、近年光ディスクおよび磁気
ディスクがその主流であって、これらは周知のごとくデ
ィスク表面に、光の反射溝（ビット）を刻設するか、所
要の磁気を付与することに基づいて再生すべく設けてお
り、以下光ディスクを例にとって説明する。(B) Background of the Invention In recent years, optical disks and magnetic disks have been the mainstream of disks like the one described above, and as is well known, these disks have light reflecting grooves (bits) carved on the disk surface or the required It is provided for reproduction based on the application of magnetism, and will be explained below using an optical disc as an example.
従来使用されている光ディスクの原料は周知のごとく、
耐変形性および耐久性等の優れたアルミ材またはガラス
繊維材料が使用されている。As is well known, the raw materials for conventionally used optical discs are:
Aluminum or glass fiber materials, which have excellent deformation resistance and durability, are used.
しかし、光ディスクの表面は高感度の光の反射溝を形成
する機能上、ディスクの製造に際してはディスク表面に
対する特殊研磨を必要とし、コメ１−高を誘引してディ
スクの単価が高価なものについていた。However, because the surface of an optical disk has a function of forming highly sensitive light reflection grooves, special polishing of the disk surface is required when manufacturing the disk, which leads to high cost and makes the unit price of the disk expensive. .
（ハ）発明の目的
そこでこの発明は、特殊研磨を要することなく製造する
ことができるディスク製造方法の提供を目的とする。(c) Purpose of the Invention Therefore, it is an object of the present invention to provide a method for manufacturing a disk that can be manufactured without requiring special polishing.
（ニ）発明の要約
この発明はディスク成形金型の中央部に加熱軟化した耐
変形性の優れた熱可塑性樹脂をラッパ状の射出案内孔を
有する回転ノズルより射出することに基づいて熱可塑性
樹脂を遠心力にてディスク成形金型内に注入するディス
ク製造方法であることを特徴とする。(D) Summary of the Invention This invention is based on injecting a heat-softened thermoplastic resin with excellent deformation resistance into the center of a disk molding die through a rotating nozzle having a trumpet-shaped injection guide hole. The disc manufacturing method is characterized by injecting into a disc molding mold using centrifugal force.
（ホ）発明の効果
そしてこの発明によれば、熱可塑性樹脂がディスク成形
金型の中央部より回転ノズルの遠心力作用に基づいて金
型内の外周端部から中央部へと効率よく注入して成形で
きるので、全体が均一に成形されてディスクが変形しな
いのはもちろんのこと、ディスク表面は特殊研磨を要し
ないディスク表面に適した高精度のディスク面が得られ
る。(e) Effects of the Invention According to the present invention, thermoplastic resin is efficiently injected from the outer edge of the disc mold to the center based on the centrifugal force of the rotating nozzle. Since the entire disc can be molded uniformly and the disc does not deform, it is possible to obtain a highly accurate disc surface suitable for disc surfaces that does not require special polishing.
このため、製作工数が少なくてすみ、低コスト化に基づ
いた兼備なディスクを提供することができる。Therefore, the number of man-hours required for manufacturing is reduced, and it is possible to provide a disk with multiple functions based on cost reduction.
（へ）発明の実施例 この発明の一実施例を以下図面に基づいて詳述する。(f) Examples of the invention An embodiment of the present invention will be described in detail below based on the drawings.
図面は光ディスクの製作例を示し、第１図において、光
デイスク製造装置１は、固定装置２と可動装置３とから
構成される。The drawings show an example of manufacturing an optical disc, and in FIG. 1, an optical disc manufacturing apparatus 1 is comprised of a fixing device 2 and a movable device 3.
そして固定装置２は、支持部材（図外）を介して固定設
置された筒状体のケーシング４と、このケーシング４内
にディスクの成形素材を射出する回転ノズル５およびそ
のノズル駆動装Ｎ６が内設される。The fixing device 2 includes a cylindrical casing 4 that is fixedly installed via a support member (not shown), and a rotary nozzle 5 for injecting a disk molding material into the casing 4 and its nozzle drive device N6. will be established.
上述の回転ノズル５は、先端には大径軸部７を有し、基
端側には小径軸部８を有する段付き軸体に形成され、そ
の大径軸部７の先端面９がケーシング４の先端開口面に
露出される程度に位置すると共に、この大径軸部７の先
端面９はケーシング４の先端面より内方にディスク厚さ
だけ凹んだ状態で軸受け１０・・・を介してケーシング
４内に同芯して軸支されている。The above-mentioned rotating nozzle 5 is formed into a stepped shaft body having a large-diameter shaft portion 7 at the tip and a small-diameter shaft portion 8 at the base end, and the distal end surface 9 of the large-diameter shaft portion 7 is connected to the casing. The large-diameter shaft portion 7 is positioned to such an extent that it is exposed to the opening surface of the distal end of the casing 4, and the distal end surface 9 of the large diameter shaft portion 7 is recessed inward from the distal end surface of the casing 4 by the thickness of the disk. and is coaxially supported within the casing 4.
また、この回転ノズル５のノズル形状は、先端に向けて
拡径となるラッパ状の射出案内孔１１を右しており、こ
の射出案内孔１１とノズルの回転作用に基づいて射出素
材に遠心力を持たばて射出素材を軸方向から径方向に方
向変換させて勢よく射出する役目をする。In addition, the nozzle shape of this rotating nozzle 5 has a trumpet-shaped injection guide hole 11 whose diameter increases toward the tip, and centrifugal force is applied to the injection material based on the rotational action of this injection guide hole 11 and the nozzle. It has the role of changing the direction of the injection material from the axial direction to the radial direction and injecting it vigorously.
上述のノズル駆動装置６は、モータ１２および減速装置
１３を介した駆動ギヤ１４と、回転ノズル５の小径軸部
８上に外嵌固定された従動ギヤ１５とが噛合して設番プ
られ、モータ１２の駆動出力に基づいて回転ノズル５は
一定速度で回転駆動される。The above-described nozzle drive device 6 is constructed by meshing a drive gear 14 via a motor 12 and a speed reduction device 13 with a driven gear 15 externally fitted and fixed on the small diameter shaft portion 8 of the rotating nozzle 5. Based on the drive output of the motor 12, the rotary nozzle 5 is driven to rotate at a constant speed.
このように構成された固定装置２と後述する可動装置３
との対向面間に、ディスクの成形金型１６が形成される
。The fixing device 2 configured in this way and the movable device 3 described later
A disk mold 16 is formed between the opposing surfaces.
上述の可動装置３は、前述のケーシング４と同径に形成
された円板状の押圧板１７と、この押圧板１７を進退し
て固定装置２の先端面に対接離反自在に操作する進退装
置１８とから構成される。The above-mentioned movable device 3 includes a disk-shaped press plate 17 formed to have the same diameter as the above-mentioned casing 4, and a movable device that moves the press plate 17 forward and backward to move it toward and away from the distal end surface of the fixing device 2. It consists of a device 18.
上述の抑圧板１７と回転ノズル５との対接空間部、すな
わち押圧板１７の先端面１９と、回転ノズル５の先端面
９と、ケーシングの先端内周面２０とで囲まれる空間部
がディスクの成形金型１６として設けられる。The contact space between the above-mentioned suppressing plate 17 and the rotating nozzle 5, that is, the space surrounded by the tip surface 19 of the pressing plate 17, the tip surface 9 of the rotating nozzle 5, and the inner peripheral surface 20 of the tip of the casing is a disk. It is provided as a molding die 16.
上述の進退装置１８は、押圧板１７の背面側に、油圧シ
リンダ２１．２１のピストンロッド２２゜２２を取付【
プて押圧板１７を進退自在に設けている。[
A push plate 17 is provided so as to be movable forward and backward.
そして、進退装置１８を作動して押圧板１７を前進させ
てディスクの成形金型１６を形成した後、樹脂２３を加
熱軟化して回転ノズル５より射出させれば、樹脂２３は
射出案内孔１１を通過しつつこの回転ノズル５の回転に
伴う遠心力作用を受１プでノズルの先端部よりディスク
の成形金型１６内に射出されると共に、これより樹脂２
３は遠心力に基づいて外向きの径方向に順次分散注入さ
れ、金型１６の外周側より中央部分へと均一に注入され
る。そして、注入完了後は射出操作を停止し、樹脂２３
が固化するのを持って押圧板１７を後退さぜ、金型１６
内より固化したディスクを取出して後段のプレス成形工
程にて後処理すれば、第２図に示すように円板状の光デ
ィスク２４は製造される。 なお、上述の一実施例にお
いては光ディスクについて説明したが、磁気ディスクに
おいても磁気を伺与可能な樹脂材料を使用することによ
って適用できる。Then, after activating the advancement/retraction device 18 to advance the press plate 17 to form the disk mold 16, the resin 23 is heated and softened and injected from the rotating nozzle 5. The resin 2 is injected from the tip of the nozzle into the mold 16 of the disk in one step, while passing through the nozzle 5 and being subjected to the centrifugal force caused by the rotation of the rotating nozzle 5.
3 is dispersed and injected sequentially in the outward radial direction based on centrifugal force, and is uniformly injected from the outer circumferential side of the mold 16 to the central portion. After the injection is completed, the injection operation is stopped and the resin 23
When it solidifies, move back the press plate 17 and remove the mold 16.
By taking out the solidified disk from the inside and post-processing it in a subsequent press molding process, a disk-shaped optical disk 24 is manufactured as shown in FIG. In the above embodiment, an optical disk was described, but the present invention can also be applied to a magnetic disk by using a resin material that can exhibit magnetism.
図面はこの発明の一実施例を示し、
第１図は光デイスク製造装置の製造状態を示す要部縦断
面図。
第２図は光ディスクを示Ｊ斜視図である。
１・・・光デイスク製造装置
５・・・回転ノズル １１・・・射出案内孔１６・・・
ディスクの成形金型The drawings show an embodiment of the present invention, and FIG. 1 is a vertical cross-sectional view of a main part showing the manufacturing state of an optical disk manufacturing apparatus. FIG. 2 is a perspective view of the optical disc. 1... Optical disk manufacturing device 5... Rotating nozzle 11... Injection guide hole 16...
Disc mold
Claims (1)
の優れた熱可塑性樹脂をラッパ状の射出案内孔を有する
回転ノズルより射出することに基づいて前記熱可塑性樹
脂を遠心力にてディスク成形金型内に注入することを特
徴とする ディスク製造方法。[Claims] 1. The thermoplastic resin is produced by injecting a heat-softened thermoplastic resin with excellent deformation resistance into the center of a disk molding die through a rotating nozzle having a trumpet-shaped injection guide hole. A disc manufacturing method characterized by injecting into a disc molding mold using centrifugal force.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| JP19030383A JPH0245970B2 (en) | 1983-10-11 | 1983-10-11 | DEISUKUSEIZOHOHO |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| JP19030383A JPH0245970B2 (en) | 1983-10-11 | 1983-10-11 | DEISUKUSEIZOHOHO |
Publications (2)
| Publication Number | Publication Date |
|---|---|
| JPS6082314A true JPS6082314A (en) | 1985-05-10 |
| JPH0245970B2 JPH0245970B2 (en) | 1990-10-12 |
Family
ID=16255908
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| JP19030383A Expired - Lifetime JPH0245970B2 (en) | 1983-10-11 | 1983-10-11 | DEISUKUSEIZOHOHO |
Country Status (1)
| Country | Link |
|---|---|
| JP (1) | JPH0245970B2 (en) |
Cited By (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| JPS62246708A (en) * | 1986-04-09 | 1987-10-27 | Daicel Chem Ind Ltd | Injection molding of plastic base plate for optical disk |
| WO2000012285A1 (en) * | 1998-08-28 | 2000-03-09 | Atecs Mannesmann Ag | Method and device for injection-moulding a plastic material |
-
1983
- 1983-10-11 JP JP19030383A patent/JPH0245970B2/en not_active Expired - Lifetime
Cited By (3)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| JPS62246708A (en) * | 1986-04-09 | 1987-10-27 | Daicel Chem Ind Ltd | Injection molding of plastic base plate for optical disk |
| JPH0579008B2 (en) * | 1986-04-09 | 1993-11-01 | Daicel Chem | |
| WO2000012285A1 (en) * | 1998-08-28 | 2000-03-09 | Atecs Mannesmann Ag | Method and device for injection-moulding a plastic material |
Also Published As
| Publication number | Publication date |
|---|---|
| JPH0245970B2 (en) | 1990-10-12 |
Similar Documents
| Publication | Publication Date | Title |
|---|---|---|
| JPH0260502B2 (en) | ||
| SE7602604L (en) | CLAMPING DEVICE FOR A ROTARY INFORMATION DISC | |
| JPH02193301A (en) | Turntable assembly, manufacture thereof and disc player | |
| JPS6082314A (en) | Manufacture of disk | |
| JPH0313902A (en) | Compound optical parts and production thereof | |
| JP2001118317A (en) | Turntable and disk drive device | |
| JP3264419B2 (en) | Recording disk and molding die device | |
| JPS6097820A (en) | Manufacture of disc | |
| US4415138A (en) | Elastomeric videodisc mold | |
| JPH0291835A (en) | Manufacture of carrier having optically readable digital information | |
| JPS6023014B2 (en) | Injection molding method for record discs | |
| JP3383387B2 (en) | Optical disc substrate and mold for molding this optical disc substrate | |
| JPS63236612A (en) | Gate structure of mold for insert molding | |
| JP2625285B2 (en) | Method of manufacturing molded body for frequency generator in audio equipment | |
| CN111483099B (en) | Mold for demolding contact lenses and method thereof | |
| JP3520689B2 (en) | Method for producing resin turntable and resin turntable obtained thereby | |
| JPS63174007A (en) | Plastic screw and its molding method | |
| JP2630880B2 (en) | Disk holding device | |
| JPH0521390Y2 (en) | ||
| WO2004064058A1 (en) | Turn table device manufacturing method and turn table device | |
| JPS61159615A (en) | Resin polygonal mirror and its production | |
| JPS63273288A (en) | Hub for optical recording medium | |
| JP2003217190A (en) | Manufacturing method of disk optical recording medium and disk optical recording medium | |
| JP3749470B2 (en) | Method for manufacturing disc-shaped substrate material | |
| JPS6215841Y2 (en) |