KR0138443Y1 - Injection molds for optical disc - Google Patents
Injection molds for optical disc Download PDFInfo
- Publication number
- KR0138443Y1 KR0138443Y1 KR2019950043072U KR19950043072U KR0138443Y1 KR 0138443 Y1 KR0138443 Y1 KR 0138443Y1 KR 2019950043072 U KR2019950043072 U KR 2019950043072U KR 19950043072 U KR19950043072 U KR 19950043072U KR 0138443 Y1 KR0138443 Y1 KR 0138443Y1
- Authority
- KR
- South Korea
- Prior art keywords
- sprue bush
- side template
- optical disk
- sprue
- resin
- Prior art date
Links
- 238000002347 injection Methods 0.000 title claims abstract description 29
- 239000007924 injection Substances 0.000 title claims abstract description 29
- 230000003287 optical effect Effects 0.000 title claims abstract description 29
- 239000011347 resin Substances 0.000 claims abstract description 31
- 229920005989 resin Polymers 0.000 claims abstract description 31
- 238000010438 heat treatment Methods 0.000 claims abstract description 4
- 238000000465 moulding Methods 0.000 abstract description 13
- 239000000758 substrate Substances 0.000 abstract description 7
- 238000000034 method Methods 0.000 description 4
- WQAQPCDUOCURKW-UHFFFAOYSA-N butanethiol Chemical compound CCCCS WQAQPCDUOCURKW-UHFFFAOYSA-N 0.000 description 1
- 238000004891 communication Methods 0.000 description 1
- 238000007796 conventional method Methods 0.000 description 1
- 239000002699 waste material Substances 0.000 description 1
Classifications
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- 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
- B29D—PRODUCING PARTICULAR ARTICLES FROM PLASTICS OR FROM SUBSTANCES IN A PLASTIC STATE
- B29D17/00—Producing carriers of records containing fine grooves or impressions, e.g. disc records for needle playback, cylinder records; Producing record discs from master stencils
- B29D17/005—Producing optically read record carriers, e.g. optical 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
- 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
- B29C45/2737—Heating or cooling means therefor
- B29C2045/274—Thermocouples or heat sensors
-
- 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
- B29C2045/2779—Nozzles with a plurality of outlets
-
- 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
Landscapes
- Engineering & Computer Science (AREA)
- Mechanical Engineering (AREA)
- Manufacturing & Machinery (AREA)
- Manufacturing Optical Record Carriers (AREA)
- Moulds For Moulding Plastics Or The Like (AREA)
Abstract
본 고안은 광 디스크 사출금형을 개시한다. 개시된 광 디스크 사출금형은, 스프루 부시의 내부에 가열수단으로서의 열전대가 설치되고, 상기 스프루 부시의 단부에는 스프루 부시와 연통되는 중앙공과 이 중앙공과 직교된 상태로 캐비티와 연통되는 복수개의 수지주입공이 방사상으로 형성된 노즐부재가 나사결합된 것을 특징한다. 따라서 광디스크 기판의 성형후 스프루와 런너에 남아있는 수지를 취출하지 않고 재 가열하여 다음 성형에 사용할 수 있으므로 수지를 절감할 수 있게 된다.The present invention discloses an optical disc injection mold. In the disclosed optical disk injection mold, a thermocouple as a heating means is provided inside the sprue bush, and at the end of the sprue bush, a central hole communicating with the sprue bush and a plurality of resins communicating with the cavity in a state orthogonal to the central hole are provided. It is characterized in that the nozzle member radially formed with the injection hole is screwed. Therefore, after molding the optical disk substrate, the resin remaining in the sprue and runner can be reheated without being taken out and used for the next molding, thereby reducing the resin.
Description
제1도는 종래의 광 디스크 사출금형을 개략적으로 도시한 단면도.1 is a cross-sectional view schematically showing a conventional optical disc injection mold.
제2도는 본 고안에 따른 광 디스크 사출금형을 개략적으로 도시한 단면도.2 is a cross-sectional view schematically showing an optical disk injection mold according to the present invention.
제3도는 제2도에 도시된 스프루부시를 발췌하여 도시한 분리단면도.3 is a cross-sectional view showing an extract of the sprue bush shown in FIG.
제4도는 제3도의 A-A선 단면도.4 is a cross-sectional view taken along the line A-A of FIG.
* 도면의 주요부분에 대한 부호의 설명* Explanation of symbols for main parts of the drawings
11 : 고정측 형판 12 : 가동측 형판11: fixed side template 12: movable side template
13 : 캐비티 17 : 스프루 부시13: cavity 17: sprue bush
17a : 스프루 18 : 노즐부재17a: sprue 18: nozzle member
18a : 중앙공 18b : 수지주입공18a: center hole 18b: resin injection hole
19 : 열전대19: thermocouple
본 고안은 광 디스크 사출금형에 관한 것으로서, 더 상세하게는 고정측 형판에 설치되는 스프루 부시를 개량한 광 디스크 사출금형에 관한 것이다.The present invention relates to an optical disc injection mold, and more particularly, to an optical disc injection mold having an improved sprue bush installed on a fixed side template.
종래의 광 디스크 사출금형은 제1도에 개략적으로 도시되어 있는 바와같이, 고정측 형판(2)과, 이 고정측 형판(2)과 형합되어 그 사이에 광디스크 성형 캐비티(4)를 형성하는 가동축 형판(3)을 구비한다. 그리고 가동측 형판(3)에는 이젝트 핀(EJECT PIN : 5) 과 게이트 커트 펀치(GATE CUT PUNCH : 6) 및 플로팅 펀치(FLOATING PUNCH : 7)가 설치되고, 고정측형판(2)에는 용융수지를 캐비티(4)로 안내하는 스프루 부시(SPRUE BUSH : 8)가 설치되어 있다.Conventional optical disc injection molds are movable to form the fixed side template 2 and the fixed side template 2 to form the optical disc forming cavity 4 therebetween, as schematically shown in FIG. The shaft template 3 is provided. In addition, an eject pin (EJECT PIN: 5), a gate cut punch (GATE CUT PUNCH: 6), and a floating punch (FLOATING PUNCH: 7) are installed in the movable side template (3), and the molten resin is installed in the fixed side template (2). A sprue bush (SPRUE BUSH: 8) which guides to the cavity 4 is provided.
이와같이 구성된 종래의 광 디스크 사출금형은, 스프루 부시(8)를 통해 용융된 수지가 고정측 형판(2)과. 가동측 형판(3) 사이의 광디스크 성형 캐비티(4)로 주입되고, 게이트 커트 펀치(6)가 케이트를 커팅하여 중앙공을 형성하게 되며, 이젝트 핀(5)이 커팅된 스프루와 런너를 밀어서 분리시키게 되고, 플로팅 펀치(7)가 중앙공이 형성된 광디스크 기판을 밀어 캐비티(4)로부터 분리시킴으로써 광디스크기판을 형성하게 된다.In the conventional optical disk injection mold configured as described above, the resin melted through the sprue bush 8 is fixed-side template 2. It is injected into the optical disk forming cavity 4 between the movable side template 3, the gate cut punch 6 cuts the gate to form a center hole, and the eject pin 5 pushes the cut sprue and runner by In this case, the floating punch 7 pushes the optical disk substrate having the central hole and separates it from the cavity 4 to form the optical disk substrate.
그러나 이와같이 구성된 종래의 광 디스크 사출금형은, 사출완료시 스프루와 런너 내부에 용융수지가 냉각된 상태로 남아있게 되고, 냉각된 상태로 남아있는 수지를 이젝트 핀으로 취출하여 제거하도록 되어 있으므로, 금형의 구조 및 성형공정이 복잡하게 되고, 또한 스프루와 런너 내부에서 냉각된 상태로 남아있는 수지의 양만큼 용융수지가 불필요하게 소모되게 됨에따라 수지의 낭비가 심한 문제점이 있었다.However, in the conventional optical disk injection mold configured as described above, the molten resin remains in the sprue and runner inside when the injection is completed, and the resin remaining in the cooled state is ejected and removed by the eject pin. The structure and the molding process of the complicated and also the waste of the resin is severely consumed as the molten resin is unnecessarily consumed by the amount of the resin remaining in the cool state inside the sprue and runner.
본 고안은 상술한 바와같은 문제점을 해결하기 위하여 안출된 것으로서, 광디스크 기판의 성형후 스프루와 런너에 남아있는 수지를 취출하지 않고 재 가열하여 다음 성형에 사용할 수 있도록 스프루 부시의 구조를 개량한 광 디스크 사출금형을 제공하는데 그 목적이 있다.The present invention was devised to solve the problems described above, and improved the structure of the sprue bush so that the resin remaining in the sprue and the runner after molding of the optical disk substrate could be reheated and used for the next molding. The object is to provide an optical disc injection mold.
본 고안의 상기 목적은, 고정측 형판과, 상기 고정측 형판과 형합되어 그 사이에 광 디스크 성형 캐비티를 형성하는 가동측 형판과, 상기 고정측 형판에 설치되며 용융된 수지를 상기 캐비티로 공급하는 스프루 부시를 구비하는 광 디스크 사출금형에 있어서, 상기 스프루 부시의 내부에 가열수단으로서의 열전대가 설치되고, 상기 스프루 부시의 단부에는 스프루 부시와 연통되는 중앙공과 이 중앙공과 직교된 상태로 캐비티와 연통되는 복수개의 수지주입공이 방사상으로 형성된 노즐부재가 나사결합된 것을 특징으로 하는 광 디스크 사출금형을 제공함으로써 달성될 수 있다.The object of the present invention is to provide a fixed side template, a movable side template to be joined with the fixed side template to form an optical disk forming cavity therebetween, and to supply molten resin to the cavity provided in the fixed side template. In an optical disk injection mold having a sprue bush, a thermocouple serving as a heating means is provided inside the sprue bush, and at the end of the sprue bush in a state perpendicular to the central hole communicating with the sprue bush and the central hole. A plurality of resin injection holes communicating with the cavity can be achieved by providing an optical disk injection mold, wherein a nozzle member radially formed is screwed together.
이하 첨부된 도면을 참조하여 본 고안에 따른 바람직한 실시예를 상세하게 설명한다.Hereinafter, exemplary embodiments of the present invention will be described in detail with reference to the accompanying drawings.
본 고안에 따른 광 디스크 사출금형은 제2도에 개략적으로 도시되어 있는 바와같이, 고정측 형판(11)과, 이 고정측 형판(11)과 형합되어 그 사이에 광 디스크 성형 캐비티(13)를 형성하는 가동측 형판(12)을 구비한다. 그리고 가동측 형판(12)에는 게이트 커트 펀치(GATE CUT PUNCH : 15)와 플로팅 펀치(FLOATING PUNCH : 16)가 설치되고, 고정측형판(11)에는 캐비티로 용융수지를 공급하는 스프루 부시(17)가 설치된다. 그리고 본 고안의 특징에 따라 스프루 부시(17)의 단부에는 스프루 부시(17)의 스프루(17a)와 연통되는 중앙공(18a)과 이 중앙공(18a)과 직교된 상태로 캐비티(13)와 연통되는 복수개의 수지주입공(18b)이 방사상으로 형성된 노즐부재(18)가 착탈가능하도록 나사 결합된다. 그리고 스프루 부시(17)의 내부에는 사출완료시 스프루(17a)와 노즐부재(18)의 수지주입공(18b)에 남아있는 수지를 다음 성형에 다시 사용할 수 있도록 가열하여 소정온도로 유지시키는 열전대(19)가 설치된다.The optical disk injection mold according to the present invention, as shown schematically in FIG. 2, is fixed to the fixed side template 11 and the fixed side template 11 to form an optical disk forming cavity 13 therebetween. A movable side template 12 to be formed is provided. The movable side template 12 is provided with a gate cut punch 15 and a floating punch 16, and the fixed side plate 11 is a sprue bush 17 for supplying molten resin to the cavity. ) Is installed. And the end of the sprue bush 17 in accordance with a feature of the present invention and the central hole (18a) in communication with the sprue (17a) of the sprue bush 17 and the cavity orthogonal to the central hole (18a) A plurality of resin injection holes 18b communicating with 13 are screwed so that the nozzle members 18 radially formed are detachable. And the inside of the sprue bush 17 is heated so that the resin remaining in the sprue 17a and the resin injection hole (18b) of the nozzle member 18 to be used for the next molding when the injection is completed to maintain at a predetermined temperature The thermocouple 19 is installed.
이와같이 구성된 본 고안에 따른 광 디스크 사출금형은, 스프루 부시(17)의 스프루(17a)를 통해 용융된 수지가 주입되게 되고, 주입된 수지를 스프루 부시(17)의 단부에 나사결합된 노즐부재(18)의 중앙공(18a)과 이 중앙공(18a)과 직교된 상태로 연통된 복수개의 방사상 수지주입공(18b)을 통해 캐비티(13)에 채워진 상태로 냉각되게 된다.In the optical disk injection mold according to the present invention configured as described above, molten resin is injected through the sprue 17a of the sprue bush 17, and the injected resin is screwed to the end of the sprue bush 17. The central hole 18a of the nozzle member 18 and the plurality of radial resin injection holes 18b communicated in a state orthogonal to the central hole 18a are cooled while being filled in the cavity 13.
그리고 게이트 커터 펀치(15)가 동작하여 노즐부재(18)의 수지주입공(18b)과 캐비티(13) 사이의 게이트를 커팅하여 중앙공을 형성하게 되고, 이어서 가동측 형판(12)이 고정측 형판(11)으로부터 분리되고, 가동측 형판(12)과 고정측 형판(11)이 분리된 상태에서 플로팅 펀치(16)가 광디스크 기판을 가압하여 캐비티(13)로부터 분리시킴으로써 광디스크 기판의 성형이 완료되게 된다.The gate cutter punch 15 is operated to cut the gate between the resin injection hole 18b and the cavity 13 of the nozzle member 18 to form a center hole, and then the movable side template 12 is fixed to the fixed side. The molding of the optical disk substrate is completed by separating the mold 11 from the cavity 13 by pressing the optical disk substrate and separating it from the cavity 13 while being separated from the template 11 and the movable side template 12 and the fixed side template 11 are separated. Will be.
그리고 성형이 완료된 상태에서 본 고안의 특징에 따라 스프루 부시(17)에 설치된 열전대(19)가 스프루(17a)와 노즐부재(18)의 수지주입공(18b)에 남아있는 수지를 가열하여 다음 성형에 다시 사용할 수 있도록 수지를 소정온도로 유지시키게 된다.And the thermocouple 19 installed in the sprue bush 17 in accordance with the features of the present invention in the state that the molding is completed by heating the resin remaining in the sprue 17a and the resin injection hole (18b) of the nozzle member 18 The resin is kept at a predetermined temperature so that it can be used again in the next molding.
따라서 종래 방식에서 별도의 이젝트 핀을 사용하여 스프루와 런너에 채워진 수지를 취출하던 방식에 비하여 수지를 대폭 절감할 수 있게 된다. 또한 본 고안에 의하면 별도의 이젝트 핀이 불필요하게 됨에따라 금형의 구조 및 성형공정이 간단하여 금형비 및 작업 공수를 절감할 수 있게 된다.Therefore, compared to the method of taking out the resin filled in the sprue and the runner by using a separate eject pin in the conventional method it is possible to significantly reduce the resin. In addition, according to the present invention, since a separate eject pin is unnecessary, the mold structure and the molding process can be simplified, thereby reducing the mold cost and the work man-hour.
이상에서 설명한 바와같이 본 고안 광 디스크 사출금형에 의하면, 광디스크 기판의 성형후 스프루와 런너에 남아있는 수지를 취출하지 않고 재 가열하여 다음 성형에 사용할 수 있으므로 수지를 절감할 수 있게 된다. 또한 이젝트 핀이 필요 없게 됨에따라 금형의 구조 및 성형공정이 간단하여 금형비 및 작업공수를 절감할 수 있게 된다.As described above, according to the optical disk injection mold of the present invention, since the resin remaining in the sprue and the runner after molding the optical disk substrate can be reheated and used for the next molding, the resin can be saved. In addition, as the eject pin is not required, the mold structure and the molding process can be simplified, thereby reducing the mold cost and the labor.
Claims (1)
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| KR2019950043072U KR0138443Y1 (en) | 1995-12-18 | 1995-12-18 | Injection molds for optical disc |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| KR2019950043072U KR0138443Y1 (en) | 1995-12-18 | 1995-12-18 | Injection molds for optical disc |
Publications (2)
| Publication Number | Publication Date |
|---|---|
| KR970028083U KR970028083U (en) | 1997-07-24 |
| KR0138443Y1 true KR0138443Y1 (en) | 1999-05-15 |
Family
ID=19435295
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| KR2019950043072U KR0138443Y1 (en) | 1995-12-18 | 1995-12-18 | Injection molds for optical disc |
Country Status (1)
| Country | Link |
|---|---|
| KR (1) | KR0138443Y1 (en) |
-
1995
- 1995-12-18 KR KR2019950043072U patent/KR0138443Y1/en not_active IP Right Cessation
Also Published As
| Publication number | Publication date |
|---|---|
| KR970028083U (en) | 1997-07-24 |
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Legal Events
| Date | Code | Title | Description |
|---|---|---|---|
| A201 | Request for examination | ||
| E902 | Notification of reason for refusal | ||
| E701 | Decision to grant or registration of patent right | ||
| REGI | Registration of establishment | ||
| LAPS | Lapse due to unpaid annual fee |