KR200444791Y1 - Undercut processing structure of injection molding - Google Patents

Undercut processing structure of injection molding Download PDF

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Publication number
KR200444791Y1
KR200444791Y1 KR2020070017785U KR20070017785U KR200444791Y1 KR 200444791 Y1 KR200444791 Y1 KR 200444791Y1 KR 2020070017785 U KR2020070017785 U KR 2020070017785U KR 20070017785 U KR20070017785 U KR 20070017785U KR 200444791 Y1 KR200444791 Y1 KR 200444791Y1
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South Korea
Prior art keywords
undercut
core
slide
angular
processing
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KR2020070017785U
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Korean (ko)
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KR20090004317U (en
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이석주
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구미에이테크솔루션주식회사
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Priority to KR2020070017785U priority Critical patent/KR200444791Y1/en
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    • BPERFORMING OPERATIONS; TRANSPORTING
    • B29WORKING OF PLASTICS; WORKING OF SUBSTANCES IN A PLASTIC STATE IN GENERAL
    • B29CSHAPING OR JOINING OF PLASTICS; SHAPING OF MATERIAL IN A PLASTIC STATE, NOT OTHERWISE PROVIDED FOR; AFTER-TREATMENT OF THE SHAPED PRODUCTS, e.g. REPAIRING
    • B29C45/00Injection moulding, i.e. forcing the required volume of moulding material through a nozzle into a closed mould; Apparatus therefor
    • B29C45/17Component parts, details or accessories; Auxiliary operations
    • B29C45/40Removing or ejecting moulded articles
    • B29C45/44Removing or ejecting moulded articles for undercut articles
    • B29C45/4435Removing or ejecting moulded articles for undercut articles using inclined, tiltable or flexible undercut forming elements driven by the ejector means
    • BPERFORMING OPERATIONS; TRANSPORTING
    • B29WORKING OF PLASTICS; WORKING OF SUBSTANCES IN A PLASTIC STATE IN GENERAL
    • B29CSHAPING OR JOINING OF PLASTICS; SHAPING OF MATERIAL IN A PLASTIC STATE, NOT OTHERWISE PROVIDED FOR; AFTER-TREATMENT OF THE SHAPED PRODUCTS, e.g. REPAIRING
    • B29C45/00Injection moulding, i.e. forcing the required volume of moulding material through a nozzle into a closed mould; Apparatus therefor
    • B29C45/17Component parts, details or accessories; Auxiliary operations
    • B29C45/40Removing or ejecting moulded articles
    • B29C45/4005Ejector constructions; Ejector operating mechanisms
    • BPERFORMING OPERATIONS; TRANSPORTING
    • B29WORKING OF PLASTICS; WORKING OF SUBSTANCES IN A PLASTIC STATE IN GENERAL
    • B29CSHAPING OR JOINING OF PLASTICS; SHAPING OF MATERIAL IN A PLASTIC STATE, NOT OTHERWISE PROVIDED FOR; AFTER-TREATMENT OF THE SHAPED PRODUCTS, e.g. REPAIRING
    • B29C45/00Injection moulding, i.e. forcing the required volume of moulding material through a nozzle into a closed mould; Apparatus therefor
    • B29C45/17Component parts, details or accessories; Auxiliary operations
    • B29C45/26Moulds
    • B29C45/33Moulds having transversely, e.g. radially, movable mould parts
    • B29C45/332Mountings or guides therefor; Drives therefor
    • B29C2045/336Cam drives
    • BPERFORMING OPERATIONS; TRANSPORTING
    • B29WORKING OF PLASTICS; WORKING OF SUBSTANCES IN A PLASTIC STATE IN GENERAL
    • B29CSHAPING OR JOINING OF PLASTICS; SHAPING OF MATERIAL IN A PLASTIC STATE, NOT OTHERWISE PROVIDED FOR; AFTER-TREATMENT OF THE SHAPED PRODUCTS, e.g. REPAIRING
    • B29C45/00Injection moulding, i.e. forcing the required volume of moulding material through a nozzle into a closed mould; Apparatus therefor
    • B29C45/17Component parts, details or accessories; Auxiliary operations
    • B29C45/40Removing or ejecting moulded articles
    • B29C45/44Removing or ejecting moulded articles for undercut articles
    • B29C2045/4492Removing or ejecting moulded articles for undercut articles preventing damage or deformation of undercut articles during ejection

Abstract

본 고안은 슬라이드 코어와 변형 밀핀을 이용한 성형품 내/외측 언더컷 처리 장치에 관한 것으로, 내/외부에 언더컷을 갖는 사출품을 취출하기 위하여, 고정측 형판에 경사지게 돌출형성된 작동캠에 의하여 좌/우 이동하면서 외측 언더컷을 해결하는 슬라이드 블록과, 상기한 슬라이드 블록의 언더컷 부분에 설치되어 측면 외측 언더컷부분을 관통하여 상부로 경사지게 설치되는 앵귤러 코어와 상기한 앵귤러 코어에 맞물려서 내측 언더컷을 처리하는 슬라이드 코어 및 상기한 슬라이드 코어가 이동가능하도록 내부에 경사지게 설치되고 하부는 밀판에 힌지 결합되어 가동측에 경사지게 설치된 변형 밀핀으로 구성되는 슬라이드코어와 변형 밀핀을 이용한 성형품 내/외측 언더컷 처리 장치에 의하여, 사출금형에서 내/외측 언더컷을 위한 장치가 간단하도록 한 것이다.The present invention relates to an internal / external undercut processing apparatus using a slide core and a deformation mill pin. In order to take out an injection product having an undercut inside / outward, the left / right movement is performed by an operation cam protruding obliquely to the fixed side template. And a slide block for solving the outer undercut, an angular core installed in the undercut portion of the slide block and inclined upwardly through the side outer undercut portion, and a slide core for engaging the angular core to process the inner undercut; The slide core is inclined in the inside so as to be movable, and the lower part is hinged to the plate, and the slide core is composed of the deformation mill pin inclined on the movable side, and the inside / outside undercut processing apparatus using the deformation mill pin is used in the injection mold. Makes the device for / outside undercut simple It is a lock.

언더컷, 슬라이드 블록, 밀핀 Undercut, Slide Block, Milpin

Description

슬라이드 코어와 변형 밀핀을 이용한 성형품 내/외측 언더컷 처리 장치{Undercut processing structure of injection molding}Undercut processing structure of injection molding using slide core and deformation pin

본 고안은 슬라이드 코어와 변형 밀핀을 이용한 성형품 내/외측 언더컷 처리 장치에 관한 것으로, 보다 상세하게는 성형품의 내/외부 언더컷을 간단한 장치로 동시에 처리할 수 있도록 한 성형품 내/외측 언더컷 처리 장치에 관한 것이다.The present invention relates to an internal / external undercut processing apparatus for a molded article using a slide core and a deformation mill pin, and more particularly, to an internal / external undercut processing apparatus for processing an internal / external undercut of a molded article simultaneously with a simple device. will be.

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 성형품의 성형공간인 금형의 캐비티 내로 주입되어 성형되고, 성형이 완료된 후에는 밀판이 동작하여 밀핀이 승강하면서, 게이트와 성형품의 연결부분이 분리되어, 런너와 게이트 및 성형품이 분리되면서 취출된다.In the injection molding die, the molten material is injected into the cavity of the mold, which is a molding space of the molded article, through injection spaces such as sprues, runners, and gates, and after the molding is completed, the mill plate is operated to push up the pin. At the same time, the connection portion between the gate and the molded article is separated, and the runner, the gate, and the molded article are separated and taken out.

이와 같은 성형품의 취출 과정에서 성형품을 캐비티로부터 분리해내기 어렵게 장애를 주는 부분을 통상 언더컷이라 하고, 통상 하부나 측부 등 한부분에만 언 더컷이 있는 경우에는 슬라이드 코어를 해당 부분에 맞게 이동시켜 간단하게 처리하였으나, 내측과 외측에 동시에 있는 언더컷의 경우에는 처리가 용이하지 않았다.The part which makes it difficult to separate the molded part from the cavity during the extraction process of such a molded part is usually called an undercut.If there is an undercut only in one part such as the lower part or the side part, the slide core is moved to the corresponding part and simply The treatment was not easy, however, in the case of the undercut simultaneously on the inner and outer sides.

이러한 문제점을 해결하기 위한 선행기술로 20-0421077호에는 내/외측 언더컷을 처리하기 위하여 슬라이드 코어를 이중으로 설치하여, 금형의 개형시에 복수개의 슬라이드 코어가 각각 동작하면서 내/외측 언더컷을 처리하도록 하고 있으나, 이러한 이중 슬라이드 코어를 사용할 경우, 사출성형장치 내에 복수개의 슬라이드코어를 배치하여야 하므로 설계가 용이하지 않고 구성이 복잡해지며, 유지/보수 또한 용이하지 않은 문제점이 있었다.In order to solve this problem, the prior art 20-0421077 is provided with a double slide core in order to process the inner / outer undercut, so that the plurality of slide cores to operate the inner / outer undercut, respectively during the opening of the mold. However, in the case of using such a double slide core, a plurality of slide cores must be disposed in the injection molding apparatus, so that the design is not easy, the configuration is complicated, and the maintenance / maintenance is not easy.

상기한 문제점을 해결하기 위한 본 고안의 목적은 내/외부에 언더컷을 갖는 사출품을 취출하기 위하여, 측면 외부언더컷을 처리하기 위한 슬라이드 코어에 연계하여 하측 내부 언더컷을 처리하는 슬라이드 코어를 구동시키고, 상기한 슬라이드 코어는 경사지게 설치된 변형밀핀에 설치함으로써, 내/외부 언더컷을 처리하기 위한 구성이 간단하도록 한 슬라이드 코어와 변형 밀핀을 이용한 성형품 내/외측 언더컷 처리 장치를 제공하는 데 있다.An object of the present invention for solving the above problems is to drive the slide core for processing the lower inner undercut in conjunction with the slide core for processing the side outer undercut, in order to take out the injection product having an undercut inside / outside, The slide core is provided on the deformation mill pin inclined so as to provide an internal / external undercut processing apparatus using the slide core and the deformation mill pin to simplify the configuration for processing the internal / external undercut.

상기한 목적을 달성하기 위한 본 고안의 특징은, 내/외부에 언더컷을 갖는 사출품을 취출하기 위하여, 고정측 형판에 경사지게 돌출형성된 작동캠에 의하여 좌/우 이동하면서 외측 언더컷을 해결하는 슬라이드 블록과, 상기한 슬라이드 블록의 언더컷 부분에 설치되어 측면 외측 언더컷부분을 관통하여 상부로 경사지게 설치되는 앵귤러 코어와 상기한 앵귤러 코어에 맞물려서 내측 언더컷을 처리하는 슬라이드 코어 및 상기한 슬라이드 코어가 이동가능하도록 내부에 경사지게 설치되고 하부는 밀판에 힌지 결합되어 가동측에 경사지게 설치된 변형 밀핀으로 구성되는 슬라이드코어와 변형 밀핀을 이용한 성형품 내/외측 언더컷 처리 장치에 의하여, 사출금형에서 내/외측 언더컷을 위한 장치가 간단하도록 한 것이다.A feature of the present invention for achieving the above object is a slide block for solving the outer undercut while moving left / right by an actuating cam protruding obliquely to the fixed side template to take out an injection product having an undercut inside / outside. And an angular core installed at an undercut portion of the slide block and inclined upwardly through a side outer undercut portion and a slide core for engaging with the angular core to process an inner undercut and the slide core therein. The device for the inside and outside undercut in the injection mold is simplified by the slide core and the under / outside undercutting device formed using the deformation mill pin, which is composed of the deformation mill pin which is installed to be inclined to the bottom plate and hinged to the plate. I did it.

상기한 바와 같은 본 고안에 의하면 내/외측 언더컷을 처리하기 위하여 복수 개의 슬라이드 블록을 사용하지 않고, 외측 언더컷은 슬라이드 블록을 통해서 내측언더컷은 상기한 슬라이드 블록과 변형 밀핀에 의하여 처리되므로, 내/외측 언더컷을 처리하기 위한 구성이 간단하여, 금형의 설계 및 유지 보수가 용이한 효과가 있다.According to the present invention as described above, without using a plurality of slide blocks to process the inner / outer undercut, the outer undercut through the slide block, the inner undercut is processed by the slide block and the deformation pin, the inner / outer The configuration for processing the undercut is simple, so that the design and maintenance of the mold are easy.

이하 본 고안의 실시예를 첨부된 도면을 참조하여 살펴본다.Hereinafter, an embodiment of the present invention will be described with reference to the accompanying drawings.

도 1은 본 고안에 따른 슬라이드 코어와 변형밀핀을 이용한 성형품 내/외측 언더컷 처리 장치를 나타내는 단면도이다.1 is a cross-sectional view showing an inside / outside undercut processing apparatus of a molded article using a slide core and a strain mill according to the present invention.

본 고안에 따른 언더컷 처리 장치는 고정측에 경사지게 하부로 일체로 돌출형성된 작동캠(110), 가동측에 좌/우 이동가능하도록 설치되어 전방에 언더컷 부분이 형성되고 상기한 작동캠(110)이 삽입되는 경사진 제 1작동공(212)이 형성되어 상기한 작동캠(110)에 의하여 좌/우 이동하여 성형품의 측부 외측 언더컷을 해소하는 슬라이드 블록(210)과, 상기한 슬라이드 블록(210)의 언더컷 부분에 일체로 설치되어 측면 외측 언더컷 부분을 관통하고 상부로 경사지게 설치되는 앵귤러 코어(220), 상기한 앵귤러 코어(220)가 삽입되는 제 2작동공(232)이 천공되어 앵귤러 코어(220)에 의하여 승/하강하며 하부 종단에 성형품의 내측 언더컷 부분이 형성된 슬라이드 코어(230), 상기한 슬라이드 코어(230)와 앵귤러 코어(220)가 각각 상하 및 좌우로 이동가능하도록 내부에 설치되어 상부는 가동측 캐비티의 일측부를 형성하고 하부는 힌지(242)에 의하여 밀판(250)에 체결되어 가동측에 경사지게 설치된 변형 밀핀(240)으로 구성된다.The undercut treatment apparatus according to the present invention is installed to be integrally projected to the lower side inclined to the fixed side, the movable cam is installed to be movable left / right, the undercut portion is formed in the front and the operation cam 110 is An inclined first operating hole 212 is formed to slide left and right by the operation cam 110 to eliminate the side outer undercut of the molded article, and the slide block 210 described above. The angular core 220 is integrally installed in the undercut portion of the angular core 220 and penetrates the lateral outer undercut portion, and the second operating hole 232 into which the angular core 220 is inserted is drilled to form the angular core 220. The slide core 230, the slide core 230 and the angular core 220, which are moved up and down by the inner side and the inner undercut portion of the molded article is formed at the lower end thereof, are installed in the upper and lower sides and the left and right sides, respectively. Air upper and lower parts are formed in one side of the movable side cavity is of a strain milpin 240 is fastened to milpan 250 by a hinge 242 is installed obliquely on the movable side.

상기한 구성에서 변형 밀핀(240)에는 상기한 슬라이드 코어(230)가 삽입되는 경사진 설치홈(244)과 앵귤러 코어(220)가 삽입되는 삽입공(246)이 형성되는데, 상기한 설치홈(244)은 상하로 슬라이드 코어(230)의 치수보다 다소 크게 형성되고 하부는 도시하지는 않았으나 슬라이드 코어(230)의 하부 이동을 제한하기 위한 스톱퍼 등이 가장자리 부분에 돌출형성되고, 삽입공(246)은 좌우로 형성되며 상기한 삽입공(246)의 하부는 앵귤러 코어(220)의 경사면과 동일한 경사로 형성되고 상부는 앵귤러 코어(220)의 좌/우 이동을 수용할 수 있도록 수평하게 형성된다.In the above-described configuration, the deformation mill pin 240 is provided with an inclined installation groove 244 into which the slide core 230 is inserted and an insertion hole 246 into which the angular core 220 is inserted. 244 is formed slightly larger than the dimensions of the slide core 230 up and down, and the bottom is not shown, but a stopper or the like is formed at the edge portion to limit the bottom movement of the slide core 230, the insertion hole 246 is It is formed left and right and the lower portion of the insertion hole 246 is formed at the same slope as the inclined surface of the angular core 220 and the upper portion is formed horizontally to accommodate the left / right movement of the angular core 220.

이와 같이 구성된 본 고안의 작동예를 살펴보면, 우선 사출성형장치가 상/하로 형개 작동하면 슬라이드 코어(230)가 작동캠(110)에 의하여 우측으로 후퇴함과 동시에 일체로 맞물린 앵귤러 코어(220)가 우측으로 후퇴하게 되고, 상기한 앵귤러 코어(220)에 맞물린 슬라이드 코어(230)가 제 2작동공(232)을 따라 승강하면서 하부 내측 언더컷이 해소되며, 이때 설치홈(244)이 슬라이드 코어(230)에 비하여 다소 크게 형성되어 있어서 상기한 슬라이드 코어(230)의 승/하강 위치를 흡수할 수 있게 된다.Looking at the operation example of the present invention configured as described above, first, when the injection molding apparatus is operated to open the mold up / down, the slide core 230 is retracted to the right by the operation cam 110 and at the same time the angular core 220 integrally engaged When the slide core 230 engaged with the angular core 220 is lifted along the second operating hole 232, the lower inner undercut is removed while the installation groove 244 is the slide core 230. It is formed somewhat larger than) so that the slide core 230 can absorb the up / down position.

그리고, 형개 완료 후 이형과정에서 밀판(250)에 의하여 변형 밀핀(240)이 승강하면 성형품(300)은 변형 밀핀(240)과 함께 상승하게 되므로, 성형품(300)의 변형밀핀(240) 반대편은 지지하는 수단없이 자유로운 상태로 되고, 성형품(300)의 변형 밀핀(240)측은 변형 밀핀(240)과 접한 상태에서 상승되며, 이 과정에서 변형 밀핀(240)이 경사지게 형성되어 있어서 성형품(300)과 변형 밀핀(240)이 도면의 좌 측으로 이동하면서 승강되므로, 앵귤러 코어(220)가 성형품(300)의 외측으로 완전히 이탈하게 되어 성형품(300)의 측부 외측 언더컷을 해소하게 된다.In addition, when the modified mill pin 240 is lifted by the mill plate 250 during the mold release process after completion of mold opening, the molded article 300 rises together with the modified mill pin 240, so that the opposite side of the modified mill pin 240 of the molded article 300 is formed. It becomes free without a means for supporting, and the deformation | transformation mill pin 240 side of the molded article 300 is raised in the state which contacted the deformation | transformation mill pin 240, In this process, the deformation | transformation mill pin 240 is inclined, and the molded article 300 and Since the deformed mil pin 240 is moved up and down while moving to the left side of the drawing, the angular core 220 is completely separated to the outside of the molded article 300 to eliminate the side outer undercut of the molded article 300.

도 1은 본 고안에 따른 슬라이드 코어와 변형밀핀을 이용한 성형품 내/외측 언더컷 처리 장치를 나타내는 단면도1 is a cross-sectional view showing an inner / outer undercut processing apparatus for a molded article using a slide core and a deformation mill according to the present invention.

*도면의 주요부분에 대한 부호의 설명** Description of the symbols for the main parts of the drawings *

110 : 작동캠 210 : 슬라이드 블록110: operation cam 210: slide block

220 : 앵귤러 코어 230 : 슬라이드 코어220: angular core 230: slide core

240 : 변형 밀핀 250 : 밀판240: deformed mill pin 250: mill plate

300 : 성형품300: molded article

Claims (1)

내/외부에 언더컷을 갖는 사출품을 취출하기 위한 내/외측 언더컷 처리 장치에 있어서,In the inside / outside undercut processing apparatus for taking out the injection molded article having an undercut inside / outside, 고정측에 경사지게 돌출형성된 작동캠(110),Actuating cam 110 protruding obliquely to the fixed side, 상기한 작동캠(110)이 삽입되는 제 1작동공(212)이 천공되어 가동측에 좌/우 이동가능하도록 설치되어 외측 언더컷을 해결하는 슬라이드 블록(210),The first operation hole 212 into which the operation cam 110 is inserted is drilled and installed to move left / right on the movable side to solve the outer undercut. 상기한 슬라이드 블록(210)의 언더컷 부분에 설치되어 성형품(300)의 측면 외측 언더컷부분을 관통하여 경사지게 설치되는 앵귤러 코어(220)와,An angular core 220 installed in the undercut portion of the slide block 210 and inclinedly penetrating through the side outer undercut portion of the molded product 300; 상기한 앵귤러 코어(220)가 삽입되는 제 2작동공(232)이 천공되어 앵귤러 코어(220)에 맞물려서 이동하면서 내측 언더컷을 처리하는 슬라이드 코어(230) 및,The slide core 230 for processing the inner undercut while the second operation hole 232 is inserted into the angular core 220 is inserted into the angular core 220 and moved, 상기한 앵귤러 코어(220)와 슬라이드 코어(230)가 이동가능하도록 내부에 설치되고 하부는 밀판(250)에 힌지(242) 결합되어 가동측에 경사지게 설치된 변형 밀핀(240)으로 구성되는 것을 특징으로 하는 슬라이드코어와 변형 밀핀을 이용한 성형품 내/외측 언더컷 처리 장치.The angular core 220 and the slide core 230 is installed therein so as to be movable, and the lower portion of the angular core 220 is coupled to the hinge 242 to the mill plate 250 is characterized in that it consists of a deformed mill pin 240 is installed inclined to the movable side Molded product inner and outer undercut processing device using a slide core and a deformation mill pin.
KR2020070017785U 2007-11-03 2007-11-03 Undercut processing structure of injection molding KR200444791Y1 (en)

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Publication number Priority date Publication date Assignee Title
CN102935676A (en) * 2012-11-07 2013-02-20 凡嘉科技(无锡)有限公司 Reset structure of inclined roof ejecting mechanism

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KR200459395Y1 (en) * 2009-12-15 2012-03-23 구미에이테크솔루션주식회사 Mold for undercut processing of cylindrical product
KR101482984B1 (en) * 2013-09-02 2015-01-15 에이테크솔루션(주) A cam assembly for treatment of an undercut in injection mould

Cited By (1)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
CN102935676A (en) * 2012-11-07 2013-02-20 凡嘉科技(无锡)有限公司 Reset structure of inclined roof ejecting mechanism

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