WO2006123703A1 - ディスク成形用金型、その製造方法及び金型部品 - Google Patents
ディスク成形用金型、その製造方法及び金型部品 Download PDFInfo
- Publication number
- WO2006123703A1 WO2006123703A1 PCT/JP2006/309839 JP2006309839W WO2006123703A1 WO 2006123703 A1 WO2006123703 A1 WO 2006123703A1 JP 2006309839 W JP2006309839 W JP 2006309839W WO 2006123703 A1 WO2006123703 A1 WO 2006123703A1
- Authority
- WO
- WIPO (PCT)
- Prior art keywords
- mold
- disk
- support plate
- plate
- low
- 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.)
- Ceased
Links
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
-
- 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
- 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
- B29C33/00—Moulds or cores; Details thereof or accessories therefor
- B29C33/38—Moulds or cores; Details thereof or accessories therefor characterised by the material or the manufacturing process
-
- 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
- B29C33/00—Moulds or cores; Details thereof or accessories therefor
- B29C33/56—Coatings, e.g. enameled or galvanised; Releasing, lubricating or separating agents
-
- G—PHYSICS
- G11—INFORMATION STORAGE
- G11B—INFORMATION STORAGE BASED ON RELATIVE MOVEMENT BETWEEN RECORD CARRIER AND TRANSDUCER
- G11B7/00—Recording or reproducing by optical means, e.g. recording using a thermal beam of optical radiation by modifying optical properties or the physical structure, reproducing using an optical beam at lower power by sensing optical properties; Record carriers therefor
- G11B7/24—Record carriers characterised by shape, structure or physical properties, or by the selection of the material
- G11B7/26—Apparatus or processes specially adapted for the manufacture of record carriers
-
- G—PHYSICS
- G11—INFORMATION STORAGE
- G11B—INFORMATION STORAGE BASED ON RELATIVE MOVEMENT BETWEEN RECORD CARRIER AND TRANSDUCER
- G11B7/00—Recording or reproducing by optical means, e.g. recording using a thermal beam of optical radiation by modifying optical properties or the physical structure, reproducing using an optical beam at lower power by sensing optical properties; Record carriers therefor
- G11B7/24—Record carriers characterised by shape, structure or physical properties, or by the selection of the material
- G11B7/26—Apparatus or processes specially adapted for the manufacture of record carriers
- G11B7/263—Preparing and using a stamper, e.g. pressing or injection molding substrates
-
- 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
Definitions
- the present invention relates to a disk molding die, a manufacturing method thereof, and a mold part.
- a molding machine for example, an injection molding machine for molding a disk substrate.
- the melted resin is filled in the heating space in the heating cylinder and filled in the cavity space in the disk molding die, and the resin is cooled and solidified in the cavity, thereby allowing the disk substrate.
- the resin is cooled and solidified in the cavity, thereby allowing the disk substrate.
- the injection molding machine includes: a mold for disk formation comprising a mold assembly on the fixed side and a mold assembly on the movable side; an injection device for filling the cavity with the grease; And a mold clamping device for bringing the movable mold assembly into and out of contact with the fixed mold assembly. Then, the mold assembly on the movable side is advanced and retracted by the mold clamping device, the mold for closing the disk is closed, the mold is clamped and the mold is opened. A cavity space is formed between the plate and the disk plate of the movable mold assembly.
- the injection device includes a heating cylinder, an injection nozzle attached to a front end of the heating cylinder, and a screw that is rotatably and reciprocally disposed in the heating cylinder.
- the screw is rotated, the resin is melted and stored in front of the screw, and the screw is retracted accordingly.
- the mold is closed and clamped.
- the screw is advanced, and the grease stored in front of the screw is injected by an injection nozzle to fill the cavity space.
- the cooling step the resin in the cavity space is cooled, drilled, and a disk substrate is formed.
- the mold is opened and the disk substrate is taken out.
- the disk for forming irregularities on the information surface of the disk substrate is formed on the disk plate on the fixed side.
- a tamper is attached, and a cap ring for forming the outer peripheral edge of the disk substrate is attached to the movable disk plate, and the outer peripheral edge of the cavity space is formed by the cap ring.
- the cap ring is brought into contact with and abutted against the abutment ring arranged in the fixed-side mold assembly every time molding is performed. Therefore, it is conceivable to improve the wear resistance of the cap ring by performing a nitriding treatment on the surface of the cap ring.
- the nitriding treatment temperature is generally in the range of 530 to 570 [in], and is high. Therefore, when nitriding is performed on a mold part having a thin and complicated shape such as a cap ring, the variation in dimensions that is caused only by the deformation of the cap ring increases. Therefore, the accuracy of the disc substrate is lowered.
- the present invention solves the problems of the conventional disk-molding mold, improves the wear resistance of the mold parts, and improves the precision of the disk substrate.
- An object is to provide a mold, a manufacturing method thereof, and a mold part.
- a first mold including a first support plate, and a first mirror plate attached to the first support plate; And a second mold having a second mirror plate attached to the second support plate.
- the first mold including the first support plate and the first mirror plate attached to the first support plate; 2 support plugs And a second mold with a second mirror plate attached to the second support plate.
- the wear resistance of the mold part can be improved.
- the processing temperature is low, even if a low-temperature nitriding process is performed on a mold part having a complicated shape, it is possible to reduce the variation in dimensions that the mold part does not deform. As a result, the accuracy of the disk substrate can be increased.
- FIG. 1 is a cross-sectional view of a disk-molding mold in an embodiment of the present invention.
- FIG. 2 is a relationship diagram between the processing temperature and the variation in the dimensions of the cap ring in the embodiment of the present invention.
- FIG. 1 is a cross-sectional view of a disk molding die in an embodiment of the present invention
- FIG. 2 is a relationship diagram between a processing temperature and a variation in dimensions of a cap ring in the embodiment of the present invention.
- the horizontal axis represents the processing temperature
- the vertical axis represents the dimensional variation.
- a mold assembly on the fixed side as a first mold, and the mold assembly 12 includes a base plate 15 as a first support plate, a first mirror plate attached to the base plate 15 and
- the disk plate 16 is disposed in the mounting plate 13 so as to face the fixed platen side, and locates the base plate 15 with respect to the fixed platen.
- a spring bush 24 arranged adjacent to the location ring 23 is provided.
- a die 28 is formed at the front end of the sprue bush 24 so as to face the cavity space C. The die 28 is communicated with the die 28, and a resin as an injection molding material is injected from an injection nozzle of an injection device (not shown).
- a sprue 26 is formed for threading.
- the injection device includes a heating cylinder (not shown), an injection nozzle attached to the front end of the heating cylinder, and a screw that is rotatable in the heating cylinder and is provided to move forward and backward.
- a stamper (not shown) for forming irregularities on the information surface of the disk substrate (not shown) is attached to the disk plate 16 and radially outward of the front half of the sprue bushing 24.
- a stamper presser bush 14 for pressing the inner peripheral edge of the stamper is disposed on the stamper.
- the mold assembly 12 is also provided with an air probe or the like (not shown).
- annular abutment ring 18 is attached to the outer peripheral edge of the disc plate 16 with a bolt bl, and an annular first outer peripheral ring is formed radially outward from the disc plate 16 and the abutment ring 18. 19 is attached to the base plate 15.
- the stamper presser bushing 14, the disk plate 16, the abutting ring 18, the first outer peripheral ring 19, the air probe bush, etc. constitute a mold part on the mold assembly 12 side.
- 32 is a movable side mold & solid as a second mold attached to a movable platen (not shown) by a bolt (not shown).
- the mold ⁇ & solid 32 is a base plate 35.
- the intermediate plate 40 attached to the base plate 35 with bolts b2, the disc plate 36 as a second mirror plate attached to the intermediate plate 40 with bolts b3, and the base plate 35 facing the movable platen.
- Cylinder 44 as an enclosing member installed on intermediate plate 40 with bolt b4, and
- a cut punch 48 is provided as a perforated member which is advanced and retracted along the Linda 44 and whose front end has a shape corresponding to the die 28.
- the base plate 35 and the intermediate plate 40 constitute a second support plate.
- a cap ring 37 having an annular shape is disposed on the outer peripheral edge of the disc plate 36 so as to move with respect to the disc plate 36 and to face the abutting ring 18.
- An annular second outer peripheral ring 38 is attached to the intermediate plate 40 so as to face the first outer peripheral ring 19 and radially outward from the disc plate 36 and the cap ring 37.
- the capillary ring 37 is attached to the rod 41 by a bolt b5 and is movably disposed with respect to the intermediate plate 40 via the rod 41.
- a spring 63 as a first urging member is brought into contact with the rod 41, and the spring 63 urges the rod 41 and the cavity ring 37 toward the mold assembly 12 side.
- Reference numeral 39 denotes a cap ring presser attached to the second outer peripheral ring 38 by a bolt (not shown), and the presser foot 39 is locked to the outer peripheral edge of the cap ring 37.
- the cap ring 37 is protruded from the front end surface of the disc plate 36, and the outer peripheral edge of the disk substrate is formed by the inner peripheral surface of the cap ring 37.
- a flange 51 formed integrally with the cut punch 48 is disposed in the cylinder 44 so as to be able to advance and retreat, and a rear end 51 a of the flange 51 is received by the cylinder 44.
- a cut punch return spring 52 as a second biasing member is disposed in front of the flange 51, and the flange 51 is biased rearward by the cut punch return spring 52.
- a disc molding die is constituted by the mold assemblies 12 and 32, and a mold clamping device (not shown) is provided to bring the mold assembly 32 into and out of contact with the mold assembly 12. It is done.
- the mold closing cylinder is closed, the mold is clamped, and the mold is opened by driving a mold clamping cylinder as a mold clamping drive unit of the mold clamping apparatus and moving the mold assembly 32 forward and backward.
- the cavity space C is formed between the disc plates 16 and 36 during mold clamping.
- the cut punch 48 when the cut punch 48 is advanced by driving a drive cylinder (not shown) as a driving unit for drilling (not shown) during mold clamping, the front end of the cut punch 48 enters the die 28. As a result, the resin in the cavity space C can be drilled. wear.
- An eject tab 62 for projecting the disk substrate is disposed radially outward of the first half of the cut punch 48, and compressed air is blown onto the disk substrate outward of the ejector tab 62 in the radial direction.
- An air probe 47 for releasing the substrate from the disk plate 36 is provided.
- the mold assembly 32 is also provided with ejector pins and the like (not shown).
- the disk plate 36, the cap ring 37, the second outer ring 38, the rod 41, the air probe 47, the cut punch 48, the jet tab 62 and the like constitute a mold part on the mold assembly 32 side.
- First and second temperature control channels 93 and 94 are formed in the disk plates 16 and 36, respectively. Water, oil, air, etc. are provided in the first and second temperature control channels 93 and 94, respectively.
- the disk plates 16 and 36 are cooled by supplying the temperature control medium.
- the screw is rotated, the resin is melted and stored in front of the screw, and the screw is retracted accordingly.
- the disk molding die is Mold closing and mold clamping are performed.
- the injection step the screw is advanced, and the grease stored in front of the screw is injected by the injection nozzle and filled in the cavity space C.
- the cooling step the resin in the cavity space C is cooled, drilled, and a disk substrate is formed. Subsequently, mold opening is performed, and the disk substrate is taken out.
- the cap ring 37 is accommodated in an annular groove formed by the disc plate 36 and the second outer peripheral ring 38, and is disposed so as to be movable in the axial direction. It is biased towards the assembly 12. Therefore, when the die ring 37 is closed and abuts against the abutting ring 18, the cap ring 37 is then retracted against the urging force of the spring 63, and the mold is opened to leave the abutting ring 18. Then, it is advanced by the urging force of the spring 63.
- the cap ring 37 is brought into contact with the abutting ring 18 and is slid whenever the molding is performed. Further, the cap ring 37 is advanced and retracted in the groove every time molding is performed, so that the outer peripheral surface and inner peripheral surface of the cap ring 37 are the inner surface of the groove (the outer peripheral surface of the disk plate 36 in the groove and The inner peripheral surface of the second outer peripheral ring 38).
- the surface of the cap ring 37 is a sliding surface that contacts and slides against the abutment ring 18 in the cap ring 37 in this embodiment.
- the contact surface is subjected to a low temperature nitriding treatment.
- the low temperature nitriding treatment, the Kiyapiringu 37 for example, if made of an iron-based metal material such as used Te you!, The present embodiment, Na +, cation component of K + and the like, and CN —
- a salt bath of a molten salt composition containing a key component such as CNO—, CO 2 or the like a key component such as CNO—, CO 2 or the like,
- the bath composition is likely to change, for example, a part of the molten salt composition precipitates as the processing temperature decreases, and it becomes difficult to form a uniform nitrided layer.
- the nitriding process is performed at a temperature around 570 [deg.]
- the size of the cavity ring 37 varies by 40 to 70 [m] as in the area AR1.
- the nitriding process is performed at a temperature of about 480 []
- the dimensional variation of the cap ring 37 and the disc substrate Expressed by roughness the surface roughness is measured by a centerline average roughness measuring method according to JIS B0601.
- the low temperature nitriding process is performed on the contact surface that contacts and slides on the cap ring 37 in the abutting ring 18 under the same processing conditions. Furthermore, other sliding surfaces in the cap ring 37, that is, the outer peripheral surface and inner peripheral surface of the cap ring 37, and the inner surface of the groove can be subjected to low temperature nitriding treatment under the same processing conditions.
- the wear resistance of the cap ring 37 can be improved.
- the processing temperature is low, even when a low-temperature nitriding process is performed on a thin mold part having a complicated shape, such as Capilling 37, there is a variation in dimensions that prevents Capilling 37 from being deformed. It can be made smaller. As a result, the accuracy of the disk substrate can be increased. In particular, sufficient precision can be obtained even when a high-density disk substrate such as a DVD-R is formed.
- the nitriding treatment is subjected to surface modification, so that the wear resistance can be improved even inside the cap ring 37 to be treated. .
- the processing cost for the work can be suppressed and the cost can be reduced.
- the stamper and the abutting ring 18 are attached to the disc plate 16.
- cap ring 37 is arranged at the rate 36, a cavity ring can be arranged on the disc plate 16, and a stamper and an abutment ring can be arranged on the disc plate 36.
- the present invention is not limited to the above-described embodiment, and can be variously modified based on the gist of the present invention, and does not exclude the scope of the present invention.
- the present invention can be applied to a disk molding die for molding a disk substrate.
Landscapes
- Engineering & Computer Science (AREA)
- Manufacturing & Machinery (AREA)
- Mechanical Engineering (AREA)
- Moulds For Moulding Plastics Or The Like (AREA)
- Manufacturing Optical Record Carriers (AREA)
Description
Claims
Priority Applications (3)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| US11/920,536 US20090074904A1 (en) | 2005-05-19 | 2006-05-17 | Mold for forming disc, method for manufacture same, and mold parts |
| EP06746542A EP1882575A1 (en) | 2005-05-19 | 2006-05-17 | Disc-molding mold, method for manufacturing the same, and mold part |
| JP2007516321A JPWO2006123703A1 (ja) | 2005-05-19 | 2006-05-17 | ディスク成形用金型、その製造方法及び金型部品 |
Applications Claiming Priority (2)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| JP2005146430 | 2005-05-19 | ||
| JP2005-146430 | 2005-05-19 |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| WO2006123703A1 true WO2006123703A1 (ja) | 2006-11-23 |
Family
ID=37431276
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| PCT/JP2006/309839 Ceased WO2006123703A1 (ja) | 2005-05-19 | 2006-05-17 | ディスク成形用金型、その製造方法及び金型部品 |
Country Status (7)
| Country | Link |
|---|---|
| US (1) | US20090074904A1 (ja) |
| EP (1) | EP1882575A1 (ja) |
| JP (1) | JPWO2006123703A1 (ja) |
| KR (1) | KR20080009718A (ja) |
| CN (1) | CN101175623A (ja) |
| TW (1) | TW200641181A (ja) |
| WO (1) | WO2006123703A1 (ja) |
Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| JP2010036495A (ja) * | 2008-08-06 | 2010-02-18 | Meiki Co Ltd | 射出圧縮成形金型 |
Families Citing this family (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN104105583B (zh) * | 2012-07-09 | 2016-05-11 | 奥林巴斯株式会社 | 成型品的成型模具结构以及成型品的制造方法 |
| CN112397097B (zh) * | 2020-11-30 | 2021-10-15 | 北京中科开迪软件有限公司 | 一种用于光盘生产的光盘压模设备及其使用方法 |
Citations (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| JPS61183446A (ja) * | 1985-02-08 | 1986-08-16 | Plus Eng Co Ltd | プラスチツク用押出ピン |
| JP2003320552A (ja) * | 2002-04-30 | 2003-11-11 | Mitsubishi Materials Corp | 光ディスク成形用金型装置 |
Family Cites Families (6)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| US4446351A (en) * | 1981-02-27 | 1984-05-01 | Mitsubishi Denki Kabushiki Kaisha | Process for preparing a press die |
| JPS6059049A (ja) * | 1983-09-09 | 1985-04-05 | Kunio Kusaka | 靭性の優れたプラスチック用押出ピン |
| JPS62105616A (ja) * | 1985-11-01 | 1987-05-16 | Daicel Chem Ind Ltd | 光デイスクの射出成形用金型 |
| JPH04210477A (ja) * | 1990-07-31 | 1992-07-31 | Sumitomo Electric Ind Ltd | アルミ鋳造用鋳抜きピンおよびその製造方法 |
| JP3056478B1 (ja) * | 1999-03-04 | 2000-06-26 | 本田技研工業株式会社 | 樹脂成形用金型 |
| KR100566077B1 (ko) * | 2002-10-17 | 2006-03-30 | 스미도모쥬기가이고교 가부시키가이샤 | 금형장치 및 그 제조방법, 성형방법, 성형품 및 성형기 |
-
2006
- 2006-05-17 EP EP06746542A patent/EP1882575A1/en not_active Withdrawn
- 2006-05-17 KR KR1020077026679A patent/KR20080009718A/ko not_active Ceased
- 2006-05-17 CN CNA2006800171691A patent/CN101175623A/zh active Pending
- 2006-05-17 WO PCT/JP2006/309839 patent/WO2006123703A1/ja not_active Ceased
- 2006-05-17 US US11/920,536 patent/US20090074904A1/en not_active Abandoned
- 2006-05-17 JP JP2007516321A patent/JPWO2006123703A1/ja active Pending
- 2006-05-19 TW TW095117806A patent/TW200641181A/zh unknown
Patent Citations (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| JPS61183446A (ja) * | 1985-02-08 | 1986-08-16 | Plus Eng Co Ltd | プラスチツク用押出ピン |
| JP2003320552A (ja) * | 2002-04-30 | 2003-11-11 | Mitsubishi Materials Corp | 光ディスク成形用金型装置 |
Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| JP2010036495A (ja) * | 2008-08-06 | 2010-02-18 | Meiki Co Ltd | 射出圧縮成形金型 |
Also Published As
| Publication number | Publication date |
|---|---|
| KR20080009718A (ko) | 2008-01-29 |
| EP1882575A1 (en) | 2008-01-30 |
| CN101175623A (zh) | 2008-05-07 |
| TW200641181A (en) | 2006-12-01 |
| US20090074904A1 (en) | 2009-03-19 |
| JPWO2006123703A1 (ja) | 2008-12-25 |
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