KR20030030106A - Method for manufacturing resin mould of injection moulding - Google Patents
Method for manufacturing resin mould of injection moulding Download PDFInfo
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- KR20030030106A KR20030030106A KR1020010061759A KR20010061759A KR20030030106A KR 20030030106 A KR20030030106 A KR 20030030106A KR 1020010061759 A KR1020010061759 A KR 1020010061759A KR 20010061759 A KR20010061759 A KR 20010061759A KR 20030030106 A KR20030030106 A KR 20030030106A
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- mold
- manufacturing
- heat treatment
- resin
- zas
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- 238000004519 manufacturing process Methods 0.000 title claims abstract description 39
- 238000000034 method Methods 0.000 title claims abstract description 27
- 229920005989 resin Polymers 0.000 title claims abstract description 27
- 239000011347 resin Substances 0.000 title claims abstract description 27
- 238000001746 injection moulding Methods 0.000 title claims abstract description 10
- 238000010438 heat treatment Methods 0.000 claims abstract description 24
- 230000002787 reinforcement Effects 0.000 claims abstract description 10
- 238000003754 machining Methods 0.000 claims abstract description 8
- 239000004593 Epoxy Substances 0.000 claims abstract description 7
- 238000005266 casting Methods 0.000 claims abstract description 4
- 239000011120 plywood Substances 0.000 claims abstract description 4
- 238000009413 insulation Methods 0.000 claims abstract description 3
- 238000000926 separation method Methods 0.000 claims abstract description 3
- 238000004904 shortening Methods 0.000 abstract 1
- 238000002347 injection Methods 0.000 description 10
- 239000007924 injection Substances 0.000 description 10
- 238000000465 moulding Methods 0.000 description 4
- 230000000694 effects Effects 0.000 description 2
- 239000011247 coating layer Substances 0.000 description 1
- 238000005336 cracking Methods 0.000 description 1
- 238000010586 diagram Methods 0.000 description 1
- 229920006334 epoxy coating Polymers 0.000 description 1
- 239000003822 epoxy resin Substances 0.000 description 1
- 238000003475 lamination Methods 0.000 description 1
- 229920000647 polyepoxide Polymers 0.000 description 1
- 238000002360 preparation method Methods 0.000 description 1
- 230000003014 reinforcing effect Effects 0.000 description 1
- 239000007858 starting material Substances 0.000 description 1
- 230000001502 supplementing effect Effects 0.000 description 1
- 239000002023 wood 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
- B29C45/2602—Mould construction elements
-
- 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
- B29C45/72—Heating or cooling
- B29C45/73—Heating or cooling of the mould
Landscapes
- Engineering & Computer Science (AREA)
- Manufacturing & Machinery (AREA)
- Mechanical Engineering (AREA)
- Moulds For Moulding Plastics Or The Like (AREA)
Abstract
본 발명은 사출성형용 수지 금형 제조 방법에 관한 것으로, 설계 스펙에 맞는 제품을 제작공정의 단축과 함께 제조 비용을 절감할 수 있는 사출성형용 수지 금형 제조 방법을 제공하는데 있다.The present invention relates to a method for manufacturing a resin mold for injection molding, and to providing a method for manufacturing a resin mold for injection molding that can reduce the manufacturing cost with a shortening of the manufacturing process for a product meeting the design specifications.
이를 실현하기 위한 본 발명은 합판과 수지로 마스터 몰드를 제작하는 과정과, 보강부 ZAS를 주조하여 가공하는 과정과, 상기 ZAS를 마스터 몰드상부에 안착시키고 내열 에폭시를 주입하여 1차 열처리를 하는 과정과, 마스터 몰드를 제거하여 상형(cavity)를 완성하는 단계와, 상술한 단계를 순차적으로 수행하여 하형(core)을 제조하는 단계와, 상기 상형과 하형을 합형한 다음 2차 열처리를 하는 과정과, 상하형 분리후 기계가공 및 단열 핫 러너(hot runner)를 조립하는 과정으로 이루어진 것을 특징으로 한다.The present invention for realizing this process of manufacturing a master mold from plywood and resin, the process of casting and processing the reinforcement part ZAS, the process of seating the ZAS on the master mold and injecting heat-resistant epoxy to the first heat treatment And removing the master mold to complete the cavity, and sequentially performing the above-described steps to prepare a core, combining the upper mold and the lower mold, and then performing a second heat treatment. After the separation, the upper and lower types are characterized in that the process consisting of assembling the machining and insulation hot runner (hot runner).
본 발명의 바람직한 구현예에서, 상기 1차 열처리는 45℃에서 48시간동안 이루어지는 것을 특징으로 한다.In a preferred embodiment of the present invention, the first heat treatment is characterized in that it is made for 48 hours at 45 ℃.
또한, 상기 2차 열처리는 150℃에서 5시간동안 이루어지는 것을 특징으로 한다.In addition, the secondary heat treatment is characterized in that for 5 hours at 150 ℃.
Description
본 발명은 사출성형용 수지 금형 제조 방법에 관한 것으로, 더욱 상세하게는 시작차용 간이 금형인 RIM 성형에서 설계 스펙에 맞지 않는 단점과 개발 기간이 긴 사출 금형의 단점을 보완하여 비용 절감과 함께 제품 개발 일정을 단축시킬 수 있는 사출성형용 수지 금형 제조 방법에 관한 것이다.The present invention relates to a method of manufacturing a resin mold for injection molding, and more particularly, to develop a product with cost reduction by supplementing the disadvantages of the RIM molding, which is a simple mold for a starting vehicle, and the disadvantage of an injection mold having a long development period. The present invention relates to a resin mold manufacturing method for injection molding that can shorten a schedule.
일반적으로 시작차용 의장 부품의 경우 사출 금형을 제조하여 부품을 성형하게 되며, 부품의 수량이 적거나 제조 일정이 짧은 경우 RIM 성형을 통해 부품을 성형하게 된다.In general, in the case of the design parts for the starter car, the injection mold is manufactured to mold the parts, and when the number of parts is small or the manufacturing schedule is short, the parts are molded through RIM molding.
RIM 성형 몰드는 다음과 같은 순서에 의해 이루어지게 된다. 먼저, 1) 목재 또는 수지 등으로 목업(mock-up) 제작, 2) 하형 제작( : ① 외곽틀 제작 ② 젤 코팅층 적층 ③ 보강용 에폭시 도포(2회), 3) 탈형 및 반전, 4) 제품 두께 및 보스 가공 : 반전된 하형 금형에 시트 왁스(sheet wax) 또는 수지 등으로 제품의 두께와 보스 그리고 비브 등을 가공, 5) 상형 제작(상술한 하형 제작(과정2)과 동일한 방법으로 제작), 6) 탈형 및 두께 부분 제거하여 상하 금형을 얻게 된다.The RIM molding mold is made in the following order. First, 1) mock-up production of wood or resin, 2) lower mold production (: ① outer frame production ② lamination of gel coating layer ③ reinforcement epoxy coating (twice), 3) demoulding and reversing, 4) product Thickness and Boss Machining: Process the thickness, boss, and bevel of the product with sheet wax or resin on the inverted lower mold. 5) Forming the upper mold (produced by the same method as the fabrication of the lower mold as described above) , 6) demolding and removing the thickness part to obtain the upper and lower molds.
그러나, 이러한 RIM 성형용 몰드는 단시간 내에 금형을 제조하여 제품을 생산할 수 있는 장점은 있으나 설계 스펙(spec)에 맞지 않는 간이 부품이 생산되는 단점이 있다.However, the RIM molding mold has the advantage of producing a product in a short time by producing a mold, but has the disadvantage of producing a simple part that does not meet the design specifications (spec).
첨부도면 도 3은 사출 금형 제조 공정을 나타내는 공정도이다. 사출 금형제조 공정은 1) 상하 금형 주조 및 형판 준비 단계, 2) NC가공(황삭-정삭-잔삭), 3) 기계가공(면삭 및 홀 가공), 4) 방전 가공, 5) 금형 사상, 그리고 6) 습합 및 조립 과정으로 이루어진다.3 is a process chart showing an injection mold manufacturing process. The injection mold manufacturing process includes: 1) upper and lower mold casting and die preparation, 2) NC machining (roughing-finishing-residue), 3) machining (face-and-hole machining), 4) discharge machining, 5) mold finishing, and 6 A) It consists of a wet and assembly process.
하지만 종래의 사출 금형 제조 공정은 설계 스펙에 맞는 제품을 생산할 수 있는 장점은 있으나 제작 기간이 긴 단점이 있어 이에 대한 개선이 필요하게 되었다.However, the conventional injection mold manufacturing process has the advantage of producing a product that meets the design specifications, but has a long manufacturing period disadvantages need to be improved.
본 발명은 이러한 점을 감안하여 안출한 것으로, 설계 스펙에 맞는 제품을 제작공정의 단축과 함께 제조 비용을 절감할 수 있는 사출성형용 수지 금형 제조 방법을 제공하는데 그 목적이 있다.SUMMARY OF THE INVENTION The present invention has been made in view of this point, and an object of the present invention is to provide a method for manufacturing a resin mold for injection molding that can reduce a manufacturing cost and reduce a manufacturing process of a product meeting a design specification.
도 1은 본 발명에 따르는 수지 금형 제조 방법으로 캐비티 몰드(cavity mold)를 제조하는 과정을 나타내는 순서도,1 is a flow chart showing a process of manufacturing a cavity mold (cavity mold) by the resin mold manufacturing method according to the present invention,
도 2는 본 발명에 따르는 수지 금형 제조 방법으로 코어 몰드(core mold)를 제조하는 과정을 나타내는 순서도,2 is a flow chart showing a process of manufacturing a core mold (core mold) by the resin mold manufacturing method according to the present invention,
도 3은 종래의 사출금형 방법을 설명하기 위한 제작 공정도.Figure 3 is a manufacturing process diagram for explaining a conventional injection mold method.
[도면의 주요 부분에 대한 부호의 설명][Description of Symbols for Main Parts of Drawing]
10 : 마스터 몰드(master mold) 20 : 보강부 ZAS10: master mold 20: reinforcement part ZAS
21 : 주입구 22 : 오버플로어21: injection hole 22: overflow
30 : 내열 에폭시 40 : 상형 금형30: heat resistant epoxy 40: upper mold
50 : 하형 금형50: lower mold
이를 실현하기 위한 본 발명은 합판과 수지로 마스터 몰드를 제작하는 과정과, 보강부 ZAS를 주조하여 가공하는 과정과, 상기 ZAS를 마스터 몰드상부에 안착시키고 내열 에폭시를 주입하여 1차 열처리를 하는 과정과, 마스터 몰드를 제거하여 상형(cavity)를 완성하는 단계와, 상술한 단계를 순차적으로 수행하여 하형(core)을 제조하는 단계와, 상기 상형과 하형을 합형한 다음 2차 열처리를 하는 과정과, 상하형 분리후 기계가공 및 단열 핫 러너(hot runner)를 조립하는 과정으로 이루어진 것을 특징으로 한다.The present invention for realizing this process of manufacturing a master mold from plywood and resin, the process of casting and processing the reinforcement part ZAS, the process of seating the ZAS on the master mold and injecting heat-resistant epoxy to the first heat treatment And removing the master mold to complete the cavity, and sequentially performing the above-described steps to prepare a core, combining the upper mold and the lower mold, and then performing a second heat treatment. After the separation, the upper and lower types are characterized in that the process consisting of assembling the machining and insulation hot runner (hot runner).
본 발명의 바람직한 구현예에서, 상기 1차 열처리는 45℃에서 48시간동안 이루어지는 것을 특징으로 한다.In a preferred embodiment of the present invention, the first heat treatment is characterized in that it is made for 48 hours at 45 ℃.
또한, 상기 2차 열처리는 150℃에서 5시간동안 이루어지는 것을 특징으로 한다.In addition, the secondary heat treatment is characterized in that for 5 hours at 150 ℃.
이하, 첨부도면을 참조하여 본 발명의 구성 및 작용 효과에 대해 설명하면 다음과 같다.Hereinafter, with reference to the accompanying drawings, the configuration and effect of the present invention will be described.
첨부도면 도 1은 본 발명에 따르는 수지 금형 제조 방법으로 캐비티 몰드(cavity mold)를 제조하는 과정을 나타내는 순서도이고, 첨부도면 도 2는 본 발명에 따르는 수지 금형 제조 방법으로 코어 몰드(core mold)를 제조하는 과정을 나타내는 순서도이다.1 is a flowchart showing a process of manufacturing a cavity mold (cavity mold) by the resin mold manufacturing method according to the present invention, Figure 2 is a core mold (core mold) by the resin mold manufacturing method according to the present invention. It is a flowchart showing the manufacturing process.
본 발명은 제작 일정의 단축과 비용을 절감하기 위한 사출 성형용 수지 금형의 제조 방법에 관한 것으로, 본 발명에 따르는 수지 금형 제조 방법은 다음과 같은 단계를 거치게 된다.The present invention relates to a method of manufacturing a resin mold for injection molding to reduce the production schedule and cost, the resin mold manufacturing method according to the present invention is subjected to the following steps.
첫번째 단계로 합판과 수지로 마스터 몰드(master mold)(10)를 제조하게 된다. 이때, 마스터 몰드(10)는 제품의 스킨 데이타(skin data)를 기준으로 하여 만들게 된다.In the first step, the master mold 10 is made of plywood and resin. At this time, the master mold 10 is made based on skin data of the product.
그 다음 단계로 보강부 ZAS(20)를 제조하여 가공을 하게 된다. 특히, 상기 보강부 ZAS(20)는 마스터 몰드(10)와의 접촉면을 기준으로 해서 약 20mm 정도 빼기 상태(에폭시 수지를 주입하기 위한 공간)를 가지도록 제조한다. 물론, 이 공정에서 수지 주입을 위한 주입구(21) 및 오버플로어(22)를 함께 가공하게 된다.In the next step, the reinforcement part ZAS 20 is manufactured and processed. In particular, the reinforcing part ZAS 20 is manufactured to have a state of about 20 mm subtraction (space for injecting epoxy resin) based on the contact surface with the master mold 10. Of course, in this process, the injection hole 21 and the overflow 22 for resin injection are processed together.
상기 마스터 몰드(10)와 보강부 ZAS(20)가 만들어 지면, 상기 보강부 ZAS(20)를 마스터 몰드(10)의 상부에 안착시켜 고정시키게 되고, 상기 주입구(21)를 통해 내열 에폭시(30)를 주입하게 된다. 상기 내열 에폭시(30)는 내열도가 250℃ 이상으로 마스터 몰드(10)와 보강부 ZAS(20) 사이의 공간부에 주입하게 된다.When the master mold 10 and the reinforcement part ZAS 20 are made, the reinforcement part ZAS 20 is seated and fixed on the upper part of the master mold 10, and the heat-resistant epoxy 30 is formed through the inlet 21. ) Will be injected. The heat-resistant epoxy 30 is injected into the space between the master mold 10 and the reinforcement part ZAS 20 with a heat resistance of 250 ° C. or higher.
내열 에폭시(30)를 주입한 다음 다음 1차 열처리를 하게 된다. 1차 열처리는 수지의 치수 안정성과 경화를 위한 것으로, 이때의 열처리 조건은 45℃에서 48시간 동안 진행을 하게 된다. 이러한 1차 열처리 후에는 수지의 크랙 발생을 억제하기 위해 서냉시키게 된다.Heat-resistant epoxy 30 is injected and then subjected to the first heat treatment. Primary heat treatment is for the dimensional stability and curing of the resin, wherein the heat treatment conditions proceed for 48 hours at 45 ℃. After the first heat treatment, the resin is slowly cooled to suppress cracking of the resin.
열처리 후 보강부 ZAS(20)로부터 마스터 몰드(10)를 탈거하여 상형(cavity)을 얻게 된다.After the heat treatment, the master mold 10 is removed from the reinforcement part ZAS 20 to obtain a cavity.
본 발명의 바람직한 구현예에서는, 상술한 바와 같이 상형(cavity) 금형(40)을 얻는 방법과 동일한 단계를 반복하여 하형(core) 금형(50)을 얻게 된다. 특히, 상기 금형(40)과 하형(50)은 동일한 방법으로 이루어지게 되며, 이들 금형은 동시에 제작하여 제조 시간을 줄이는 것이 바람직하다.In a preferred embodiment of the present invention, the core mold 50 is obtained by repeating the same steps as the method of obtaining the cavity mold 40 as described above. In particular, the mold 40 and the lower mold 50 is made in the same way, it is preferable that these molds are produced at the same time to reduce the manufacturing time.
이와 같이 상형 금형(40)과 하형 금형(50)을 각 마스터 몰드(10)로부터 탈거한 다음 2차 열처리를 하게 된다. 상기 2차 열처리는 상형 금형(40)과 하형 금형(50)을 합형한 상태에서 진행하게 된다. 이때의 열처리 조건은 150℃에서 5시간 정도 열처리를 하게 되며, 이러한 열처리를 통해 수지의 강도를 향상시켜 주게 된다.As such, the upper mold 40 and the lower mold 50 are removed from each master mold 10 and then subjected to a second heat treatment. The secondary heat treatment is performed in a state in which the upper mold 40 and the lower mold 50 are combined. At this time, the heat treatment condition is a heat treatment for about 5 hours at 150 ℃, through this heat treatment to improve the strength of the resin.
마지막으로, 이렇게 2차 열처리를 끝낸 상형 금형(40)과 하형 금형(50)은 분리하여 사출 성형이 가능하도록 기계 가공을 하게 된다. 이때 밑핀과 게이트 그리고 가이드 핀을 조립하기 위한 홀 가공도 함께 이루어지게 되며, 미리 제작된 핫 러너(hot runner)를 상형 금형(40)에 설치하여 사출 성형시 수지의 흐름이 원활하게 이루어지도록 유도하게 된다.Finally, the upper mold 40 and the lower mold 50 after the second heat treatment are separated and machined to enable injection molding. At this time, the hole processing for assembling the bottom pin, the gate and the guide pin is also performed. A pre-fabricated hot runner is installed in the upper mold 40 to induce a smooth flow of the resin during injection molding. do.
이상에서 본 바와 같이 본 발명은 수지를 이용하여 상형(cavity) 금형과 하형(core) 금형을 제조함으로써 다음과 같은 효과를 얻게 된다.As described above, the present invention obtains the following effects by manufacturing a cavity mold and a core mold using a resin.
1) 상형 금형과 하형 금형을 동시에 제조할 수 있게 되어 금형의 제작 기간을 줄일 수 있게 된다.1) It is possible to manufacture the upper mold and the lower mold at the same time, thereby reducing the production period of the mold.
2) 수지의 열처리를 통해 경화 및 강도를 높여 설계 스펙에 맞는 성형품을 얻을 수 있게 된다.2) Through heat treatment of the resin, it is possible to obtain a molded product that meets design specifications by increasing hardening and strength.
3) RIM 성형품의 설계 스펙에 맞지 않는 단점과 개발 기간이 긴 사출 금형의 단점을 보완할 수 있게 된다.3) The shortcomings that do not meet the RIM molded product design specifications and the long development period of injection molds can be compensated for.
Claims (3)
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| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| KR1020010061759A KR20030030106A (en) | 2001-10-08 | 2001-10-08 | Method for manufacturing resin mould of injection moulding |
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| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| KR1020010061759A KR20030030106A (en) | 2001-10-08 | 2001-10-08 | Method for manufacturing resin mould of injection moulding |
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| KR20030030106A true KR20030030106A (en) | 2003-04-18 |
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Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| US7351366B2 (en) | 2003-11-12 | 2008-04-01 | Hyundai Mobis Co., Ltd. | Method of manufacturing low pressure injection type RIM mold, and product formed using the mold |
Citations (5)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| KR910004326A (en) * | 1989-08-07 | 1991-03-28 | 구메 유다까 | Epoxy resin now filled with metal powder and its manufacturing method |
| JPH05329845A (en) * | 1992-05-27 | 1993-12-14 | Toto Ltd | Mold for molding resin product |
| KR960010123A (en) * | 1994-09-26 | 1996-04-20 | 전성원 | Injection mold composed of zinc and epoxy and manufacturing method |
| KR19980044345A (en) * | 1996-12-06 | 1998-09-05 | 유기범 | Over Current Protection Circuit of Digital Line Card |
| JP2000280258A (en) * | 1999-03-31 | 2000-10-10 | Takahashi Seiko Kk | Production of mold |
-
2001
- 2001-10-08 KR KR1020010061759A patent/KR20030030106A/en not_active Ceased
Patent Citations (5)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| KR910004326A (en) * | 1989-08-07 | 1991-03-28 | 구메 유다까 | Epoxy resin now filled with metal powder and its manufacturing method |
| JPH05329845A (en) * | 1992-05-27 | 1993-12-14 | Toto Ltd | Mold for molding resin product |
| KR960010123A (en) * | 1994-09-26 | 1996-04-20 | 전성원 | Injection mold composed of zinc and epoxy and manufacturing method |
| KR19980044345A (en) * | 1996-12-06 | 1998-09-05 | 유기범 | Over Current Protection Circuit of Digital Line Card |
| JP2000280258A (en) * | 1999-03-31 | 2000-10-10 | Takahashi Seiko Kk | Production of mold |
Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| US7351366B2 (en) | 2003-11-12 | 2008-04-01 | Hyundai Mobis Co., Ltd. | Method of manufacturing low pressure injection type RIM mold, and product formed using the mold |
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