KR200421064Y1 - Undercut processing unit of incline - Google Patents
Undercut processing unit of incline Download PDFInfo
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- KR200421064Y1 KR200421064Y1 KR2020060009349U KR20060009349U KR200421064Y1 KR 200421064 Y1 KR200421064 Y1 KR 200421064Y1 KR 2020060009349 U KR2020060009349 U KR 2020060009349U KR 20060009349 U KR20060009349 U KR 20060009349U KR 200421064 Y1 KR200421064 Y1 KR 200421064Y1
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- South Korea
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- undercut
- inclined surface
- slide core
- core
- operating piece
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- 230000000875 corresponding Effects 0.000 claims abstract description 4
- 238000002347 injection Methods 0.000 claims abstract description 4
- 239000007924 injection Substances 0.000 claims abstract description 4
- 230000000149 penetrating Effects 0.000 claims 1
- 238000000465 moulding Methods 0.000 description 9
- 238000001746 injection moulding Methods 0.000 description 6
- 238000003780 insertion Methods 0.000 description 3
- 239000000463 material Substances 0.000 description 3
- 230000001808 coupling Effects 0.000 description 2
- 238000010168 coupling process Methods 0.000 description 2
- 238000005859 coupling reaction Methods 0.000 description 2
- 238000000034 method Methods 0.000 description 2
- 206010009839 Coeliac disease Diseases 0.000 description 1
- 206010025476 Malabsorption Diseases 0.000 description 1
- 230000000694 effects Effects 0.000 description 1
- 238000010137 moulding (plastic) Methods 0.000 description 1
- 229920001169 thermoplastic Polymers 0.000 description 1
- 229920001187 thermosetting polymer Polymers 0.000 description 1
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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
- B29C45/40—Removing or ejecting moulded articles
- B29C45/44—Removing or ejecting moulded articles for undercut articles
- B29C45/4435—Removing or ejecting moulded articles for undercut articles using inclined, tiltable or flexible undercut forming elements driven by the ejector means
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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
- B29C45/33—Moulds having transversely, e.g. radially, movable mould parts
- B29C45/332—Mountings or guides therefor; Drives therefor
- B29C2045/336—Cam drives
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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
- B29C45/40—Removing or ejecting moulded articles
- B29C45/44—Removing or ejecting moulded articles for undercut articles
- B29C2045/4492—Removing or ejecting moulded articles for undercut articles preventing damage or deformation of undercut articles during ejection
Abstract
본 고안은 경사면 언더컷 처리 구조에 관한 것으로, 고정측 설치판에 일체로 설치되고 스트리퍼 플레이트를 관통하며 종단에 경사부가 형성된 작동캠, 상기한 작동캠의 경사부와 대응되는 경사홈을 갖고 고정측 형판의 상부에 중심을 향하여 이동가능하도록 설치되며 선단 하부에 경사면을 갖는 슬라이드 코어와, 상기한 슬라이드 코어의 경사면에 일체로 설치되고 하향면에 가이드홈이 형성된 작동편, 상기한 작동편의 가이드홈에 이동가능하도록 맞물리고 캐비티에 형성된 경사홈을 관통하여 작동편의 이동에 따라 경사홈 내에서 승/하강하여 언더컷을 형성하는 코어핀으로 구성되는 경사면 언더컷 처리 구조를 제공하여, 제품 외관에 파팅라인이 발생되지 않으면서 경사면에 홀이 천공되도록 한 것이다.The present invention relates to an inclined surface undercut treatment structure, which is integrally installed on a fixed side mounting plate, penetrates a stripper plate, and has an inclined groove formed at an end thereof, and has an inclined groove corresponding to the inclined portion of the above-mentioned operating cam. The slide core is installed to be movable toward the center at the top of the slide core having an inclined surface at the lower end thereof, and the operating piece integrally installed on the inclined surface of the slide core and having a guide groove formed on the downward surface thereof, and moving to the guide groove of the operating piece. It provides a sloped undercut treatment structure consisting of core pins that engage with each other and penetrate through the inclined groove formed in the cavity and move up / down in the inclined groove according to the movement of the working piece to form an undercut. The hole is drilled in the inclined surface without.
경사면, 언더컷, 사출금형 Slope, Undercut, Injection Mold
Description
도 1a는 본 고안에 따른 경사면 언더컷 처리 구조를 나타내는 금형장치의 단면도Figure 1a is a cross-sectional view of a mold apparatus showing an inclined surface undercut treatment structure according to the present invention
도 1b는 도 1a의 작동편과 코어핀의 결합구조를 나타내는 단면도Figure 1b is a cross-sectional view showing a coupling structure of the operating piece and the core pin of Figure 1a
도 2는 본 고안에 따른 경사면 언더컷 처리 구조의 실시예를 나타내는 단면도2 is a cross-sectional view showing an embodiment of the inclined surface undercut treatment structure according to the present invention
*도면의 주요부분에 대한 부호의 설명** Description of the symbols for the main parts of the drawings *
10 : 고정측 설치판 20 : 작동캠10: fixed side mounting plate 20: operating cam
22 : 경사부 30 : 슬라이드 코어22: inclined portion 30: slide core
32 : 경사홈 40 : 작동편 32: inclined groove 40: working piece
42 : 안내홈 50 : 코어핀42: guide groove 50: core pin
52 : 단턱 80 : 캐비티52: step 80: cavity
90 : 코어90 core
본 고안은 경사면 언더컷 처리 구조에 관한 것으로, 보다 상세하게는 제품 외관에 파팅라인이 발생되지 않으면서 경사면에 홀이 천공되도록 한 경사면 언더컷 처리 구조에 관한 것이다.The present invention relates to an inclined surface undercut treatment structure, and more particularly to an inclined surface undercut treatment structure to allow holes to be drilled on the inclined surface without generating parting lines in the product appearance.
일반적으로 사출성형은 열가소성 플라스틱 또는 열경화성 플라스틱 성형재료를 사출성형기 내에서 가열 용융한 후, 스크루를 통해 사출금형의 캐비티 내로 가압 주입하여 충전하고, 이를 고화 또는 경화하여 성형품으로서 꺼내는 성형방법이다.In general, injection molding is a molding method in which a thermoplastic or thermosetting plastic molding material is heated and melted in an injection molding machine, and then press-filled into a cavity of an injection mold through a screw, and solidified or cured and taken out as a molded product.
상기 사출성형용 금형에 있어서, 용융된 재료는 스프루, 런너 및 게이트 등의 주입공간을 통하여 제품의 성형공간인 금형의 캐비티 내로 주입되어 성형되고, 성형이 완료된 후에는 밀판이 동작하여 밀핀이 승강하면서, 게이트와 성형물의 연결부분이 분리되어, 런너와 게이트 및 성형물이 분리되면서 취출된다.In the injection molding mold, the molten material is injected into the cavity of the mold, which is the molding space of the product, through injection spaces such as sprues, runners, and gates, and after the molding is completed, the mill is operated to push up the pin. At the same time, the connection portion of the gate and the molding is separated, and the runner, the gate, and the molding are separated and taken out.
이와 같은 성형물의 취출 과정에서 성형물을 캐비티로부터 분리해내기 어렵게 장애를 주는 부분을 통상 언더컷이라 하고, 종래의 경사면 언더컷 처리 구조를 살펴보면, 고정측 형판과 스트리퍼 플레이트에 공간을 형성하고, 공간 내부에는 경사면 언더컷을 위한 코어핀이 구비된 실린더를 설치하여, 성형 완료 후 고정측 설치판과 고정측형판 및 스트리퍼 플레이트가 소정간격 이격될 때 상기한 실린더가 동작되어 코어핀을 후퇴시킨 후 성형물을 취출하였다.The part which makes it difficult to separate the molding from the cavity in the process of taking out the molding is called an undercut, and when looking at the conventional inclined surface undercut structure, a space is formed in the fixed side template and the stripper plate, and the inclined surface is inside the space. A cylinder equipped with a core pin for undercut was installed, and when the fixed side mounting plate, the fixed side plate, and the stripper plate were spaced a predetermined distance after completion of molding, the cylinder was operated to retreat the core pin, and then the molded product was taken out.
그러나 이와 같은 종래의 경사면 언더컷 처리 구조에서는 금형장치 내부에 실린더가 설치되어야 하므로, 실린더를 설치하고 가동하기 위한 공간과 구성이 필요하므로, 금형장치의 부피가 커지고 구성이 복잡해지는 문제점이 있었다.However, in the conventional inclined surface undercut processing structure, since a cylinder must be installed inside the mold apparatus, a space and a configuration for installing and operating the cylinder are required, and thus, the volume of the mold apparatus is large and the configuration is complicated.
상기한 문제점을 해결하기 위한 본 고안의 목적은 부피가 크지 않고 제품 외관에 파팅라인이 발생되지 않으면서 경사면에 홀이 천공되도록 한 경사면 언더컷 처리 구조를 제공하는 데 있다. An object of the present invention for solving the above problems is to provide an inclined surface undercut treatment structure so that the hole is drilled in the inclined surface without bulking and no parting line is generated in the product appearance.
상기한 목적을 달성하기 위한 본 고안의 특징은 고정측 설치판에 일체로 설치되고 스트리퍼 플레이트를 관통하며 종단에 경사부가 형성된 작동캠, 상기한 작동캠의 경사부와 대응되는 경사홈을 갖고 고정측 형판의 상부에 중심을 향하여 이동 가능하도록 설치되며 선단 하부에 경사면을 갖는 슬라이드 코어와, 상기한 슬라이드 코어의 경사면에 일체로 설치되고 하향면에 가이드홈이 형성된 작동편, 상기한 작동편의 가이드홈에 이동가능하도록 맞물리고 캐비티에 형성된 경사홈을 관통하여 작동편의 이동에 따라 경사홈내에서 승/하강하여 언더컷을 형성하는 코어핀으로 구성된다.A feature of the present invention for achieving the above object is a fixed side having an inclined groove corresponding to the inclined portion of the operation cam, which is integrally installed on the fixed side mounting plate and penetrates the stripper plate and has an inclined portion at its end. It is installed on the upper part of the template so as to be movable toward the center and has a slide core having an inclined surface at the lower end thereof, an operating piece which is integrally installed on the inclined surface of the slide core and has a guide groove formed on the downward surface thereof, It is composed of a core pin that is engaged to move and penetrates the inclined groove formed in the cavity to move up and down in the inclined groove according to the movement of the working piece to form an undercut.
상기한 바와 같은 특징을 갖는 본 고안의 실시예를 하기에서 첨부된 도면을 참조하여 보다 상세하게 살펴본다.An embodiment of the present invention having the features as described above will be described in more detail with reference to the accompanying drawings.
도 1a는 본 고안에 따른 경사면 언더컷 처리 구조를 나타내는 금형장치의 단면도이고, 도 1b는 도 1a의 작동편과 코어핀의 결합구조를 나타내는 단면도이며, 도 2는 본 고안에 따른 경사면 언더컷 처리 구조의 실시예를 나타내는 단면도이다.Figure 1a is a cross-sectional view of the mold apparatus showing an inclined surface undercut treatment structure according to the present invention, Figure 1b is a cross-sectional view showing a coupling structure of the working piece and the core pin of Figure 1a, Figure 2 is a view of the inclined surface undercut treatment structure It is sectional drawing which shows an Example.
본 고안에 따른 경사면 언더컷 처리 구조는 크게, 종단에 경사부(22)가 형성되어 고정측 설치판(10)을 따라 승/하강하는 작동캠(20)과, 상기한 작동캠(20)과 맞물려서 이동하는 슬라이드 코어(30)와 작동편(40) 및, 상기한 작동편(40)의 이동에 의하여 경사방향으로 이동하여 언더컷을 형성하는 코어핀(50)으로 구성된다.The inclined surface undercut treatment structure according to the present invention is largely inclined with an operation cam 20 which is formed at the end of the inclined portion 22 and moves up and down along the fixed side mounting plate 10 and the operation cam 20 described above. It comprises a moving core 30 and the operating piece 40, and the core pin 50 to move in the oblique direction by the movement of the operating piece 40 to form an undercut.
상기한 구성에서 작동캠(20)은 볼트(14)에 의하여 고정측 설치판(10)에 고정설치되며, 상부는 일자형으로 형성되어 스트리퍼 플레이트(60)에 천공된 삽입공(62)을 관통하고, 하부에는 경사부(22)가 형성되는데, 상기한 경사부(22)는 삽입공(62)의 폭을 넘지 않는 크기로 형성되어 스트리퍼 플레이트(60)와 고정측형판(70)이 이격될 때 상기한 경사부(22)가 스트리퍼 플레이트(60)의 삽입공(62) 내로 삽입될 수 있도록 한다.In the above configuration, the operation cam 20 is fixedly installed on the fixed side mounting plate 10 by bolts 14, and the upper portion is formed in a straight shape to penetrate the insertion hole 62 drilled in the stripper plate 60. , The inclined portion 22 is formed in the lower portion, the inclined portion 22 is formed to a size not exceeding the width of the insertion hole 62 when the stripper plate 60 and the fixed side plate 70 is spaced apart The inclined portion 22 may be inserted into the insertion hole 62 of the stripper plate 60.
그리고 상기한 슬라이드 코어(30)는 작동캠(20)의 경사부(22)와 대응되는 경사홈(32)이 형성되고, 선단부 하부모서리가 잘려서 경사면(34)이 형성되어 고정측형판(70)에 좌/우 이동가능하도록 설치되는데, 상기한 슬라이드 코어(30)의 후방에는 고정볼트(36)가 나사결합되고, 상기한 고정볼트(36)는 슬라이드 코어(30)의 후방에 일정간격 이격되어 고정설치된 고정블록(37)을 관통하고, 상기한 고정블록(37)과 고정볼트(36)의 헤드부 사이에는 스프링(38)이 더 설치되어 슬라이드 코어(30)의 후진이 원활하도록 하면서 사출 성형 장치가 완전히 개방된 상태에서 작동캠(20)이 경사홈(32)으로 진입할 수 있도록 위치를 고정한다.In addition, the slide core 30 has an inclined groove 32 corresponding to the inclined portion 22 of the operation cam 20, and the inclined surface 34 is formed by cutting the lower edge of the tip portion, thereby fixing the side plate 70. It is installed so as to move left / right, the fixed bolt 36 is screwed to the rear of the slide core 30, the fixed bolt 36 is spaced apart at a certain interval behind the slide core 30 The fixed block 37 is fixedly installed, and a spring 38 is further installed between the fixed block 37 and the head of the fixed bolt 36 to smoothly reverse the slide core 30 and injection molding. The position is fixed so that the operation cam 20 can enter the inclined groove 32 with the device fully open.
그리고 상기한 작동편(40)은 평평하게 형성되어 슬라이드 코어(30)의 경사면(34)에 일체로 고정되고 그 하부에는 입구가 좁고 내측이 넓은 안내홈(42)이 형성된다.And the operation piece 40 is formed flat and integrally fixed to the inclined surface 34 of the slide core 30, the lower portion is formed with a guide groove 42 is narrow inlet and wide inside.
상기한 코어핀(50)은 캐비티(80)에 언더컷의 경사각에 따라 형성된 경사지게 형성된 경사홈(82) 내부에 이동가능하도록 설치되고 후단부에는 상기한 안내홈(42)내로 삽입되어 운동할 수 있도록 단턱(52)이 형성되며, 언더컷의 수와 위치에 따라 다수개가 설치된다.The core pin 50 is installed in the cavity 80 so as to be movable inside the inclined groove 82 formed inclined according to the inclination angle of the undercut, and the rear end is inserted into the guide groove 42 so as to move. A step 52 is formed, and a plurality of stepped parts are installed according to the number and position of the undercuts.
한편, 상기한 구성에서 캐비티(80)의 슬라이드 코어(30)측 모서리는 슬라이드 코어(30)가 전진한 상태에서 작동편(40)과 접하도록 경사지게 형성된다.On the other hand, in the above configuration, the edge of the slide core 30 side of the cavity 80 is formed to be inclined to contact the operating piece 40 in the state in which the slide core 30 is advanced.
이상과 같이 구성된 본 고안에 따른 언더컷 처리구조를 살펴보면, 용융재료가 캐비티(80)와 코어(90) 내부로 주입되어 성형이 완료되면, 상기한 고정측 설치판(10)과 스트리퍼 플레이트(60) 및 고정측형판(70)이 각각 분리된다.Looking at the undercut treatment structure according to the present invention configured as described above, when the molten material is injected into the cavity 80 and the core 90 to complete the molding, the fixed side mounting plate 10 and the stripper plate 60 And the fixed side plate 70 are separated.
이에 따라 상기한 스트리퍼 플레이트(60)에 일체로 설치된 작동캠(20)의 경사부(22)는 슬라이드 코어(30)의 경사홈(32)을 따라 이동하여 슬라이드 코어(30)를 후퇴시키고, 상기한 슬라이드 코어(30)에 일체로 설치된 작동편(42)이 후퇴하면서 상기한 코어핀(50)의 단턱(52)이 안내홈(42) 내부에서 위치이동을 하게 되므로 코어핀(50)은 경사홈(82)을 따라 승강하게 되므로 성형품(100)의 경사면에 언더컷(200)이 형성된다.Accordingly, the inclined portion 22 of the operation cam 20 integrally installed in the stripper plate 60 moves along the inclined groove 32 of the slide core 30 to retreat the slide core 30. As the working piece 42 integrally installed on one slide core 30 is retracted, the stepped portion 52 of the core pin 50 moves in the guide groove 42, so that the core pin 50 is inclined. The undercut 200 is formed on the inclined surface of the molded product 100 because it is elevated along the groove 82.
그리고 상기한 언더컷 형성 과정에서 고정볼트(36)는 슬라이드 코어(40)와 일체로 나사결합되어 있어서 슬라이드 코어(40)를 따라 직선운동하면서 후퇴하고 이에 따라 압축되어 있던 스프링(38)이 신장되면서 슬라이드 블록(40)이 후퇴한 위치에서 작동캠(20)의 하당 외에 발생될 수 있는 어떠한 외압에 의해서도 전진하는 것을 방지하므로, 사출 성형 과정이 종료되고 사출 성형 장치가 닫힐 경우 상기한 작동캠(20)의 경사부(22)가 경사홈(32)으로 진입할 수 있게 된다. In the undercut forming process, the fixing bolt 36 is screwed integrally with the slide core 40 so as to retreat while moving linearly along the slide core 40 and thus the spring 38 that has been compressed is extended. Since the block 40 is prevented from advancing by any external pressure that may be generated in addition to the lower limit of the actuating cam 20 in the retracted position, the actuating cam 20 described above when the injection molding process is finished and the injection molding apparatus is closed. The inclined portion 22 is able to enter the inclined groove (32).
상기한 바와 같이 구성된 본 고안에 의하면 경사면에 언더컷을 처리하기 위한 구조가 간단하고 부피가 작아서 금형 장치의 크기가 감소되는 효과가 있다.According to the present invention configured as described above, the structure for processing the undercut on the inclined surface is simple and the volume is small, thereby reducing the size of the mold apparatus.
또한, 성형품에 파팅 라인이 형성되지 않아서 제품의 품질이 향상되는 효과가 있다.In addition, since the parting line is not formed in the molded article, there is an effect of improving the quality of the product.
Claims (2)
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| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| KR2020060009349U KR200421064Y1 (en) | 2006-04-07 | 2006-04-07 | Undercut processing unit of incline |
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| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| KR2020060009349U KR200421064Y1 (en) | 2006-04-07 | 2006-04-07 | Undercut processing unit of incline |
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| KR200421064Y1 true KR200421064Y1 (en) | 2006-07-10 |
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Cited By (5)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| KR100879633B1 (en) * | 2007-10-08 | 2009-01-21 | 한국단자공업 주식회사 | Mold assembly |
| KR200460255Y1 (en) | 2010-02-19 | 2012-05-15 | 구미에이테크솔루션주식회사 | Molding unit for Undercut |
| CN102514155A (en) * | 2011-12-28 | 2012-06-27 | 厦门市超日精密模具有限公司 | Combined type slide block |
| KR200467369Y1 (en) * | 2012-02-29 | 2013-06-14 | 구미에이테크솔루션주식회사 | High-speed, high-pressure molding device |
| CN104494065A (en) * | 2014-12-05 | 2015-04-08 | 宁波方正汽车模具有限公司 | Core pulling mechanism of automobile front door upper framework |
-
2006
- 2006-04-07 KR KR2020060009349U patent/KR200421064Y1/en not_active IP Right Cessation
Cited By (6)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| KR100879633B1 (en) * | 2007-10-08 | 2009-01-21 | 한국단자공업 주식회사 | Mold assembly |
| KR200460255Y1 (en) | 2010-02-19 | 2012-05-15 | 구미에이테크솔루션주식회사 | Molding unit for Undercut |
| CN102514155A (en) * | 2011-12-28 | 2012-06-27 | 厦门市超日精密模具有限公司 | Combined type slide block |
| CN102514155B (en) * | 2011-12-28 | 2014-05-28 | 厦门市超日精密模具有限公司 | Combined type slide block |
| KR200467369Y1 (en) * | 2012-02-29 | 2013-06-14 | 구미에이테크솔루션주식회사 | High-speed, high-pressure molding device |
| CN104494065A (en) * | 2014-12-05 | 2015-04-08 | 宁波方正汽车模具有限公司 | Core pulling mechanism of automobile front door upper framework |
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