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KR200451371Y1 - Mold device for internal and external double undercut processing - Google Patents

Mold device for internal and external double undercut processing Download PDF

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Publication number
KR200451371Y1
KR200451371Y1 KR2020080017405U KR20080017405U KR200451371Y1 KR 200451371 Y1 KR200451371 Y1 KR 200451371Y1 KR 2020080017405 U KR2020080017405 U KR 2020080017405U KR 20080017405 U KR20080017405 U KR 20080017405U KR 200451371 Y1 KR200451371 Y1 KR 200451371Y1
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KR
South Korea
Prior art keywords
pin
slide
slide core
core
undercut
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KR2020080017405U
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Korean (ko)
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KR20100007017U (en
Inventor
이석주
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구미에이테크솔루션주식회사
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Priority to KR2020080017405U priority Critical patent/KR200451371Y1/en
Publication of KR20100007017U publication Critical patent/KR20100007017U/en
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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
    • 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
    • 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
    • B29C45/46—Means for plasticising or homogenising the moulding material or forcing it into the mould
    • B29C45/56—Means for plasticising or homogenising the moulding material or forcing it into the mould using mould parts movable during or after injection, e.g. injection-compression moulding
    • B29C45/561—Injection-compression moulding
    • 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

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  • Engineering & Computer Science (AREA)
  • Manufacturing & Machinery (AREA)
  • Mechanical Engineering (AREA)
  • Moulds For Moulding Plastics Or The Like (AREA)

Abstract

본 고안에 따른 상ㆍ하금형(10)(10')은 독립적으로 분할형성되어 형협시 내부에 캐비티공간(12)이 형성된다. 상ㆍ하금형(10)(10') 중 어느 하나는 실린더를 포함한 이송부재(도시생략)에 의해 승하강작동되도록 설치되고, 상ㆍ하금형(10)(10')이 형합된 상태로 서로 대응하는 경계면에 성형품(A)과 동일한 형상의 캐비티공간(12)이 형성된다.The upper and lower molds 10 and 10 'according to the present invention are formed separately and the cavity space 12 is formed inside the mold. Any one of the upper and lower molds 10 and 10 'is installed to move up and down by a conveying member (not shown) including a cylinder, and the upper and lower molds 10 and 10' are joined to each other in a state in which they are joined together. The cavity space 12 of the same shape as the molded article A is formed in the corresponding interface.

이에 따라, 본 고안에 의하면 성형품의 내외측에 복합적으로 형성되는 언더컷처리가 용이하면서, 특히 내측 언더컷을 처리하기 위한 내측슬라이드핀이 슬라이드코아핀에 의해 동축상에서 가압지지되어 성형중 유격발생 및 조립위치 오류로 인한 성형불량이 방지되고, 또 언더컷부분의 형상이 국부적으로 변경시 내측 슬라이드코어 및 슬라이드코어핀의 단순 교체만으로 금형 수정이 간편하게 이루어지는 효과가 있다.Accordingly, according to the present invention, the undercut treatment formed on the inside and the outside of the molded article is easily performed, and in particular, the inner slide pin for processing the inner undercut is coaxially supported by the slide core pin to generate the play and the assembly position during molding. Molding defects due to errors are prevented, and when the shape of the undercut portion is locally changed, there is an effect that the mold is easily modified by simply replacing the inner slide core and the slide core pin.

언더컷, 슬라이드코어, 슬라이드코어핀, 작동핀, 내측슬라이드핀 Undercut, Slide Core, Slide Core Pin, Actuating Pin, Inner Slide Pin

Description

내외측 이중 언더컷처리용 금형장치{Molding for inside/outside double under cut processing}Mold device for inside and outside double undercut processing {Molding for inside / outside double under cut processing}

본 고안은 내외측 이중 언더컷처리용 금형장치에 관한 것으로, 보다 상세하게는 성형품의 내측면에 형성된 언더컷을 처리하기 위한 내외측 이중 언더컷처리용 금형장치에 관한 것이다.The present invention relates to a mold apparatus for inner and outer double undercut treatment, and more particularly to a mold apparatus for inner and outer double undercut treatment for processing an undercut formed on the inner surface of a molded article.

일반적으로, 언더컷이란 금형장치의 형 닫힘이나 형 열림 방향의 운동만으로 사출물을 배출하기 곤란한 음양각 부분을 일컫으며, 언더컷위치 및 형태에 따라 분할 코어 방식, 핑거 핀 방식, 도그레그 캠 식, 무리 빼기 등 다양한 방식이 선택적으로 적용되고 있다.In general, the undercut refers to the yin and yang portion that is difficult to eject the injection only by the movement of the mold closing or mold opening direction of the mold apparatus, and divided core method, finger pin method, dogleg cam type, group removal, etc. according to the undercut position and shape. Various methods are selectively applied.

그러나, 상기한 대부분의 언더컷이 성형품의 외측 혹은 내측에 국부적으로 형성됨에 따라 언더컷부분에 대응하는 코어가 독립작동되도록 분할형성하여 형 열림 직전에 언더컷처리를 위한 코어를 미리 후퇴작동시키는 단순한 구조를 가지므로 복잡한 형상의 언더컷처리에 부적합한 실정이다.However, as most of the above undercuts are locally formed on the outside or inside of the molded part, the cores corresponding to the undercut portions are separately formed so that the cores for the undercut treatment are retracted in advance just before the mold opening. Therefore, the situation is unsuitable for the undercut of a complicated shape.

일예로서, 일측에 홀 혹은 홈형태의 함몰부가 형성되고, 함몰부의 내외측으로 통공이 형성되는 성형품을 성형시 함몰부상에 형성되는 통공이 언더컷으로 작용 하는바, 특히 성형품의 내면에 형성되는 통공은 좁은 공간으로 인해 코어의 분할형성 및 독립작동으로는 언더컷처리가 불가능하다.For example, a hole or a groove-shaped depression is formed on one side, and when the molded article is formed in the inner and outer sides of the depression, the through-hole formed on the depression functions as an undercut, and the through-hole formed in the inner surface of the molded article is narrow. Due to space, undercutting is not possible with splitting and independent operation of the core.

이에 종래에 실용신안 공개번호 실1999-0019360호에서 외측슬라이드코어의 하측으로 록킹홈을 형성하며 상기 록킹홈에 록킹되는 록킹부가 일측 단부에 돌출 형성되고 다른 일측은 슬라이드 이동되며 캐비티로 돌출되는 코어핀이 일체로 된 내측슬라이드코어와, 상기 내측슬라이드코어가 삽입되어 슬라이드 이동을 가이드 하는 공간부가 형성되며 가동측형판의 상측으로 결합되어 이와 동시에 승강되는 받침편으로 이루어져 가동측형판의 승강에 따라 앵귤러핀을 기준으로 슬라이드 이동되는 외측슬라이코어에 내측슬라이드코어가 동시에 승강되며 슬라이드 이동되도록 함으로서 제품의 내측과 외측에 형성되는 언더컷의 처리가 동시에 이루어지도록 한 사출금형의 언더컷 처리장치가 선공개된바 있다.Therefore, in the related art Utility Model Publication No. 1999-0019360, the locking groove is formed to the lower side of the outer slide core, and the locking part which is locked to the locking groove is formed to protrude at one end and the other side slides and protrudes into the cavity. The integrated inner slide core and the inner slide core are inserted to form a space for guiding the slide movement, and are composed of a support piece which is coupled to the upper side of the movable side plate and simultaneously raised and lowered according to the elevation of the movable side plate. An undercut treatment apparatus of an injection mold has been previously disclosed to allow an inner slide core to be simultaneously lifted and slided to an outer slide core that is slide-moved based on the same.

그러나, 상기한 사출금형의 언더컷 처리장치는 내면에 언더컷을 처리하기 위한 내측슬라이드코어가 받침편상에 슬라이드이송되도록 설치되고, 내측슬라이드 상단부에 코어핀이 구비됨에 따라 내측슬라이드코아가 받침편상에서 미세유격발생시 코어핀의 위치가 크게 변경됨에 따라 성형불량을 초례하는 폐단이 따랐다.However, the above-described injection mold undercut processing apparatus is installed so that the inner slide core for processing the undercut on the inner surface is slide-transmitted on the support piece, and the inner slide core is finely spaced on the support piece as the core pin is provided at the upper end of the inner slide. As the position of the core pin changed significantly when it occurred, the closing end was preceded for poor molding.

뿐만 아니라, 내측슬라이드코어와 코어핀이 일체로 형성됨에 따라 성형품의 언더컷부분 형상을 부분적으로 변경시 내측슬라이드코어를 전체적으로 교체해야 하는 문제점이 따랐다.In addition, as the inner slide core and the core pin are integrally formed, when the undercut portion of the molded part is partially changed, the inner slide core must be replaced as a whole.

상기한 문제점을 해결하기 위한 본 고안은 성형품의 내외측에 형성된 이중 언더컷부분을 정밀성형함과 아울러 언더컷부분의 형상을 국부적으로 변경시 금형장치를 전체적으로 교체하지 않고 간편하게 구조변경이 가능한 내외측 이중 언더컷처리용 금형장치를 제공하는 데 있다.In order to solve the above problems, the present invention precisely molds the double undercut portion formed on the inside and outside of the molded product, and when the shape of the undercut portion is locally changed, the inside and outside double undercuts can be easily changed without changing the mold apparatus as a whole. It is to provide a mold apparatus for processing.

상기한 목적을 달성하기 위한 본 고안의 특징은, 내부에 캐비티공간(12)을 형성하는 상ㆍ하금형(10)(10'); 상기 하금형(10')의 캐비티공간(12)으로 돌출형성되고, 내부에 내측 슬라이드핀(22)이 스프링(24)과 함께 삽입되며, 내측 슬라이드핀(22)의 일단부가 외부로 노출되도록 일측에 제1통공(26)이 형성되는 내측코어부(20); 상기 상금형(10)에 구비되는 앵귤러핀(14)과 경사운동되는 앵귤러공(32)이 형성되어 형개시 하금형(10')상에서 수평운동되는 슬라이드코어(30); 상기 슬라이드코어(30)상에 일단이 설치되고, 내측코어부(20)의 다른 일측에 형성되는 제2통공(28)으로 삽입되어 내측 슬라이드핀(22)을 가압하도록 구비되는 슬라이드코어핀(40); 및 상기 슬라이드코어핀(40)과 대향하도록 하금형상에 설치되고, 내측 슬라이드핀(22)의 단부와 맞물려 후퇴이송을 제어하는 작동핀(50);을 포함하여 이루어지는 것을 특징으로 한다.Features of the present invention for achieving the above object, the upper and lower molds (10, 10 ') forming a cavity space 12 therein; Protrudes into the cavity space 12 of the lower die 10 ', the inner slide pin 22 is inserted with the spring 24 therein, and one side so that one end of the inner slide pin 22 is exposed to the outside An inner core part 20 having a first through hole 26 formed therein; An angular pin 14 provided in the upper mold 10 and an angular hole 32 inclined motion are formed so that the slide core 30 moves horizontally on the lower mold 10 '; One end is installed on the slide core 30, the slide core pin 40 is inserted into the second through hole 28 formed on the other side of the inner core portion 20 to press the inner slide pin 22 ); And an operation pin (50) installed on the lower die so as to face the slide core pin (40) and engaged with the end of the inner slide pin (22) to control the retraction transfer.

이때, 상기 슬라이드코어(30)는 저면에 한 쌍의 위치고정홈(34)이 형성되고, 한 쌍의 위치고정홈(32) 중 어느 일측에 대응하는 하금형(10')상에 위치고정볼(36)이 스프링(36a)에 의해 돌출되도록 구비되는 것을 특징으로 한다. At this time, the slide core 30 has a pair of position fixing grooves 34 are formed on the bottom surface, the position fixing ball on the lower die 10 'corresponding to any one side of the pair of position fixing grooves 32 It is characterized in that the 36 is provided to protrude by the spring (36a).

또한, 상기 작동핀(50)은 내측 슬라이드핀(22)과 맞물리는 상면에 장폭의 걸 림홈(52)이 형성되고, 걸림홈(52)에 의해 내측 슬라이드핀(22)의 후퇴시점이 제어되어 슬라이드코어(30)의 작동범위가 확대되는 것을 특징으로 한다.In addition, the operation pin 50 has a long engaging groove 52 is formed on the upper surface engaged with the inner slide pin 22, the retraction point of the inner slide pin 22 is controlled by the engaging groove 52 It is characterized in that the operating range of the slide core 30 is expanded.

상기한 바와 같이 본 고안에 의하면 성형품의 내외측에 복합적으로 형성되는 언더컷처리가 용이하면서, 특히 내측 언더컷을 처리하기 위한 내측슬라이드핀이 슬라이드코아핀에 의해 동축상에서 가압지지되어 성형중 유격발생 및 조립위치 오류로 인한 성형불량이 방지되고, 또 언더컷부분의 형상이 국부적으로 변경시 내측 슬라이드코어 및 슬라이드코어핀의 단순 교체만으로 금형 수정이 간편하게 이루어지는 효과가 있다.As described above, according to the present invention, the undercut treatment that is formed on the inside and the outside of the molded article is easy, and the inner slide pin for processing the inner undercut is coaxially supported by the slide core pin to generate the play and assembly during molding. Molding defects due to position errors are prevented, and when the shape of the undercut portion is locally changed, the mold modification is easily performed by simply replacing the inner slide core and the slide core pin.

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 내외측 이중 언더컷처리용 금형장치를 전체적으로 나타내는 구성도이고, 도 2는 본 고안에 따른 내외측 이중 언더컷처리용 금형장치의 형개된 상태를 나타내는 구성도이다.1 is a configuration diagram showing the inside and outside of the double undercut processing mold apparatus according to the present invention as a whole, Figure 2 is a block diagram showing a mold opening state of the inside and outside double undercut processing mold apparatus according to the present invention.

본 고안은 내외측 이중 언더컷처리용 금형장치에 관련되며, 이때 내외측 이중 언더컷처리용 금형장치는 성형품의 내외측에 형성된 이중 언더컷부분을 처리하기 위해 상ㆍ하금형(10)(10'), 내측코어부(20), 슬라이드코어(30), 슬라이드코어핀(40), 작동핀(50)등을 포함하여 주요구성으로 이루어진다.The present invention relates to an inner and outer double undercut mold apparatus, wherein the inner and outer double undercut mold apparatus is upper and lower dies (10) (10 '), to process the double undercut portion formed on the inner and outer sides of the molded article, The inner core portion 20, the slide core 30, the slide core pin 40, the working pin 50, etc. are made of a main configuration.

본 고안에 따른 상ㆍ하금형(10)(10')은 독립적으로 분할형성되어 형협시 내부에 캐비티공간(12)이 형성된다. 상ㆍ하금형(10)(10') 중 어느 하나는 실린더를 포함한 이송부재(도시생략)에 의해 승하강작동되도록 설치되고, 상ㆍ하금형(10)(10')이 형합된 상태로 서로 대응하는 경계면에 성형품(A)과 동일한 형상의 캐비티공간(12)이 형성된다.The upper and lower molds 10 and 10 'according to the present invention are separately divided to form a cavity space 12 inside the mold narrow. Any one of the upper and lower molds 10 and 10 'is installed to move up and down by a conveying member (not shown) including a cylinder, and the upper and lower molds 10 and 10' are joined to each other in a state in which they are joined together. The cavity space 12 of the same shape as the molded article A is formed in the corresponding interface.

또한 본 고안에 따른 내측코어부(20)는 하금형(10')의 캐비티공간(12)으로 돌출형성되고, 내부에 내측 슬라이드핀(22)이 스프링(24)과 함께 삽입되며, 내측 슬라이드핀(22)의 일단부가 외부로 노출되도록 일측에 제1통공(26)이 형성된다. 내측코어부(20)는 성형품의 함몰부형상과 동일한 형상으로 돌출형성되되, 하금형과 분할형성되어 조립식으로 설치되고, 일측에 제1통공(26)을 통하여 내측 슬라이드핀(22)의 단부가 돌출되도록 구비된다. 그리고 내측 슬라이드핀(22)은 스프링(24)에 의해 내측코어부(20) 내부로 수용된 상태로 대기되고, 후술하는 슬라이드코어핀(40)의 가압력에 의해 돌출작동된다.In addition, the inner core portion 20 according to the present invention is formed to protrude into the cavity space 12 of the lower die 10 ', the inner slide pin 22 is inserted together with the spring 24, the inner slide pin The first through hole 26 is formed at one side such that one end of the 22 is exposed to the outside. The inner core part 20 is formed to protrude in the same shape as the recessed shape of the molded product, and is dividedly formed with the lower mold, and is installed in a prefabricated manner, and an end of the inner slide pin 22 is formed through the first through hole 26 on one side thereof. It is provided to protrude. And the inner slide pin 22 is waited in the state accommodated in the inner core part 20 by the spring 24, it is projected by the pressing force of the slide core pin 40 to be described later.

이처럼, 내측 슬라이드핀(22)이 내측코어부(20)상에서 전후이송되도록 설치됨에 따라 성형품(A)의 함몰부 내면에 형성된 언더컷처리가 간편하게 이루어지는 이점이 있다.As such, since the inner slide pin 22 is installed to be moved back and forth on the inner core portion 20, there is an advantage that the undercut treatment formed on the inner surface of the recessed portion of the molded article A is easily performed.

또한, 본 고안에 따른 슬라이드코어(30)는 상금형(10)에 구비되는 앵귤러핀(14)과 경사운동되는 앵귤러공(32)이 형성되어 형개시 하금형(10')상에서 수평운동된다. 슬라이드코어(30)는 내측코어부(20)와 대응하는 하금형(10') 측단에 위치되고, 상금형이 형개시 앵귤러핀(14)과 앵귤러공(32)의 경사운동에 의해 수평운동되면서 후술하는 슬라이드코어핀(40)과 작동핀(50)의 수평운동을 제어한다. In addition, the slide core 30 according to the present invention is the angular pin 14 and the inclined angular hole 32 provided in the upper mold 10 is formed to be horizontally moved on the lower mold 10 '. The slide core 30 is located at the lower end of the lower mold 10 'corresponding to the inner core portion 20, and the upper mold is horizontally moved by the inclined motion of the angular pin 14 and the angular hole 32 when the mold is opened. It controls the horizontal movement of the slide core pin 40 and the operation pin 50 to be described later.

이때, 상기 슬라이드코어(30)는 저면에 한 쌍의 위치고정홈(34)이 형성되고, 한 쌍의 위치고정홈(32) 중 어느 일측에 대응하는 하금형(10')상에 위치고정볼(36)이 스프링(36a)에 의해 돌출되도록 구비된다. 여기서 위치고정홈(32)은 슬라이드코어(30)가 후퇴된 위치에서 정지되고, 또 형합시 슬라이드코어(30)가 전진한 위치에서 정지되도록 서로 이격된 위치에 형성되고, 위치고정홈(34)은 위치고정볼(36)과 맞물려 정지된 위치에서 유격이 방지된다. 그리고 앵귤러핀(14)과 앵귤러공(32)의 경사운동에 의해 수평운동력이 작용하면 위치고정볼(34)이 스프링(36a)에 의해 완충하강되면서 슬라이드코어(30)의 이송이 허용된다. At this time, the slide core 30 has a pair of position fixing grooves 34 are formed on the bottom surface, the position fixing ball on the lower die 10 'corresponding to any one side of the pair of position fixing grooves 32 36 is provided to protrude by the spring 36a. Here, the position fixing groove 32 is formed at a position spaced apart from each other so that the slide core 30 is stopped at the retracted position, and the slide core 30 is stopped at the advanced position when mating, and the position fixing groove 34 is Is engaged with the position fixing ball 36 to prevent play in the stopped position. And when the horizontal kinetic force acts by the inclined motion of the angular pin 14 and the angular ball 32, the position fixing ball 34 is buffered down by the spring 36a while allowing the transfer of the slide core 30.

이에, 상금형(10)이 형개, 형합시 슬라이드코어(30)의 전후이송위치가 위치고정홈(32)과 위치고정볼(36)에 의해 고정됨에 따라 금형의 오작동 즉, 앵귤러핀(14)이 앵귤러공(32)상에서 완전히 이탈후 다시 조립시 슬라이드코어(30)의 위치가 정지된 상태로 대기됨에 따라 앵귤러핀(14)과 앵귤러공(32)의 삽입오류로 인한 작동불량이 방지된다.Thus, as the upper mold 10 is opened and closed, the front and rear conveying positions of the slide core 30 are fixed by the position fixing groove 32 and the position fixing ball 36, that is, the malfunction of the mold, that is, the angular pin 14. As the position of the slide core 30 is stopped in the state where the slide core 30 is completely stopped after being completely detached from the angular hole 32, the malfunction of the angular pin 14 and the angular hole 32 is prevented.

또한, 본 고안에 따른 슬라이드코어핀(40)은 슬라이드코어(30)상에 일단이 설치되고, 내측코어부(20)의 다른 일측에 형성되는 제2통공(28)으로 삽입되어 내측 슬라이드핀(22)을 가압하도록 구비된다. 슬라이드코어핀(40)은 내측 슬라이드핀(22)과 동축상에 평행하게 설치되어 슬라이드코어(30)와 함께 수평이송되고, 상금형(10)이 형합시 제2통공(28)으로 삽입되어 내측코어부(20) 내부에 설치된 내측 슬라이드핀(22)을 가압하여 전진이송을 제어한다.In addition, one end of the slide core pin 40 according to the present invention is installed on the slide core 30, is inserted into the second through hole 28 formed on the other side of the inner core portion 20 to the inner slide pin ( 22) to pressurize. The slide core pin 40 is installed in parallel with the inner slide pin 22 in parallel with the slide core 30 and is horizontally transferred. The upper die 10 is inserted into the second through hole 28 when the mold is mated. The forward slide is controlled by pressing the inner slide pin 22 installed inside the core 20.

또, 슬라이드코어핀(40)은 하금형(10') 외측에서 캐비티공간(12)을 거쳐 내측코어부(20)의 제2통공(28)으로 삽입됨에 따라 성형품(A)의 외부에서 내부로 관통 형성되는 언더컷을 처리하게 된다. In addition, the slide core pin 40 is inserted into the second through hole 28 of the inner core portion 20 through the cavity space 12 outside the lower die 10 'and from the outside of the molded article A to the inside. The undercut formed through is processed.

또한, 본 고안에 따른 작동핀(50)은 슬라이드코어핀(40)과 대향하도록 하금형상에 설치되고, 내측 슬라이드핀(22)의 단부와 맞물려 후퇴이송을 제어한다. 작동핀(50)은 내측 슬라이드핀(22)과 맞물리는 상면에 장폭의 걸림홈(52)이 형성되고, 걸림홈(52)에 의해 내측 슬라이드핀(22)의 후퇴시점이 제어되어 슬라이드코어(30)의 작동범위가 확대된다. 이때 작동핀(50)의 걸림홈(52)과 대응하는 내측 슬라이드핀(22)의 단부는 도 1 내지 2와 같이 하부로 연장되도록 돌출형성된다.In addition, the operation pin 50 according to the present invention is installed on the lower die so as to face the slide core pin 40, and meshes with the end of the inner slide pin 22 to control the retraction transfer. The operation pin 50 has a long locking groove 52 is formed on the upper surface engaged with the inner slide pin 22, the retracting time of the inner slide pin 22 is controlled by the locking groove 52, the slide core ( The operating range of 30) is expanded. At this time, the end of the inner slide pin 22 corresponding to the engaging groove 52 of the operation pin 50 is formed to protrude downward as shown in FIGS.

이에 형합시 작동핀(50)과 슬라이드코어핀(40)의 전진이송에 의해 내측 슬라이드핀(22)이 제1통공(26)으로 돌출되고, 형개시 작동핀(50)은 걸림홈(52)의 폭만큼 후퇴된 후에 내측 슬라이드핀(22)과 맞물려 후퇴이송이 제어된다. 이처럼 장폭의 걸림홈(52)에 의해 슬라이드코어(30)의 작동범위가 확대됨에 따라 슬라이드코어핀(40)을 통한 언더컷처리 및 내측 슬라이드핀(22)을 견고하게 지지하는 역할이 동시에 수행되는 이점이 있다.Accordingly, the inner slide pin 22 protrudes into the first hole 26 by the forward movement of the actuating pin 50 and the slide core pin 40 at the time of molding, and the actuating pin 50 is the catching groove 52 when the mold is started. After the retraction is retracted by the width of the retraction transfer is engaged with the inner slide pin (22). As the operating range of the slide core 30 is extended by the long locking groove 52, the undercut treatment through the slide core pin 40 and the role of firmly supporting the inner slide pin 22 are simultaneously performed. There is this.

작동상에 있어서, 상금형(10)의 작동으로 상ㆍ하금형(10)(10')이 형합되면 앵귤러핀(14)과 앵귤러공(32)의 경사운동으로 인해 슬라이드코어(30)가 수평운동되면서 슬라이드코어핀(40)과 작동핀(50)을 전진이송시키되, 이때 슬라이드코어핀(40)은 제2통공(28)으로 삽입되어 내측 슬라이드핀(22)을 가압하면, 내측 슬라이드핀(22)의 단부가 제1통공(26)을 통하여 내측코어부(20) 외부로 노출된다. 이어서 캐비티공간(12)으로 융용물을 주입하여 성형품을 성형하면 내측 슬라이드핀(22)의 단부에 의해 성형품(A)의 내측 언더컷이 처리되고, 슬라이드코어핀(40)에 의해 외 측언더컷(관통공)이 처리된다.In operation, when the upper and lower molds 10 and 10 'are combined by the operation of the upper mold 10, the slide core 30 is horizontal due to the inclined motion of the angular pin 14 and the angular hole 32. While moving forward the slide core pin 40 and the operating pin 50, the slide core pin 40 is inserted into the second through hole 28 to press the inner slide pin 22, the inner slide pin ( An end portion of 22 is exposed to the outside of the inner core part 20 through the first through hole 26. Subsequently, when the molten material is injected into the cavity space 12 to mold the molded article, the inner undercut of the molded article A is processed by the end of the inner slide pin 22, and the outer undercut is penetrated by the slide core pin 40. Blank) is processed.

그리고, 성형이 완료된 후 상ㆍ하금형(10)(10')을 형개시키면, 앵귤러핀(14)과 앵귤러공(32)의 경사운동으로 슬라이드코어(30)가 수평운동되면서 슬라이드코어핀(40)과 작동핀(50)을 후퇴이송시키되, 이때 작동핀(50)의 걸림홈(52)이 장폭으로 형성되어 슬라이드코어핀(40)이 캐비티공간(12)상에서 이탈되는 시점에 내측 슬라이드핀(22)이 후퇴작동된다.When the upper and lower molds 10 and 10 'are opened after the molding is completed, the slide core 30 is horizontally moved by the inclined motion of the angular pin 14 and the angular ball 32, and the slide core pin 40 ) And the operation pin 50 is retracted and transferred, wherein the locking groove 52 of the operation pin 50 is formed to have a long width so that the inner slide pin at the time when the slide core pin 40 is separated from the cavity space 12. 22) is retracted.

이처럼, 걸림홈(52)이 장폭으로 형성되어 슬라이드코어핀(40)의 후퇴작동에 따른 이송범위가 확대됨에 따라 성형품(A)의 내ㆍ외측에 형성되는 복합적인 언더컷처리가 용이하게 이루어진다.As such, as the locking groove 52 is formed to have a long width, as the conveying range is increased due to the retraction operation of the slide core pin 40, the complex undercut treatment formed on the inside and the outside of the molded article A is easily performed.

한편, 상기 슬라이드코어핀(40) 및 내측 슬라이드핀(22)이 부품형태로 분할제작되어 언더컷부분의 설계변경시 금형전체를 교체하지 않고도 슬라이드코어핀(40) 및 내측 슬라이드핀(22)의 단순교체로 다양한 형태의 언더컷부분을 처리가능한 이점이 있다.On the other hand, the slide core pin 40 and the inner slide pin 22 is manufactured by dividing into a part form, so that when the design of the undercut portion is changed, the slide core pin 40 and the inner slide pin 22 are simplified. Replacement has the advantage of being able to handle various types of undercut parts.

도 1은 본 고안에 따른 내외측 이중 언더컷처리용 금형장치를 전체적으로 나타내는 구성도.1 is a block diagram showing the overall internal and external double undercut mold apparatus according to the present invention.

도 2는 본 고안에 따른 내외측 이중 언더컷처리용 금형장치의 형개된 상태를 나타내는 구성도.Figure 2 is a block diagram showing a mold opening state of the inner and outer double undercut mold apparatus according to the present invention.

Claims (3)

상ㆍ하금형(10)(10')과, 상금형(10)에 구비되는 앵귤러핀(14)과 경사운동되는 앵귤러공(32)이 형성되어 형개시 하금형(10')상에서 수평운동되는 슬라이드코어(30)가 구비되는 금형장치에 있어서,The upper and lower molds 10 and 10 ', the angular pin 14 provided in the upper mold 10, and the angular hole 32 which is inclined are formed to horizontally move on the lower mold 10'. In the mold apparatus provided with a slide core 30, 상기 하금형(10')의 캐비티공간(12)으로 돌출형성되고, 내부에 내측 슬라이드핀(22)이 스프링(24)과 함께 삽입되며, 내측 슬라이드핀(22)의 일단부가 외부로 노출되도록 일측에 제1통공(26)이 형성되는 내측코어부(20);Protrudes into the cavity space 12 of the lower die 10 ', the inner slide pin 22 is inserted with the spring 24 therein, and one side so that one end of the inner slide pin 22 is exposed to the outside An inner core part 20 having a first through hole 26 formed therein; 상기 내측코어부(20)의 다른 일측에 형성되는 제2통공(28)으로 삽입되어 내측 슬라이드핀(22)을 가압하고, 일단이 슬라이드코어(30)상에 설치되는 슬라이드코어핀(40); 및A slide core pin (40) inserted into a second through hole (28) formed at the other side of the inner core portion (20) to press the inner slide pin (22) and having one end installed on the slide core (30); And 상기 슬라이드코어핀(40)과 대향하도록 하금형(10')상에 설치되고, 일단이 슬라이드코어(30)상에 고정되며, 내측 슬라이드핀(22)의 단부와 맞물리도록 상면에 장폭의 걸림홈(52)이 형성되어 내측 슬라이드핀(22)의 후퇴시점을 제어하는 작동핀(50);을 포함하여 이루어지는 것을 특징으로 하는 내외측 이중 언더컷처리용 금형장치.It is installed on the lower die 10 'so as to face the slide core pin 40, one end is fixed on the slide core 30, the locking groove of the long width on the upper surface to be engaged with the end of the inner slide pin (22) An inner and outer double undercut mold apparatus, comprising: a working pin (50) formed to control a retracting time point of the inner slide pin (22). 제1항에 있어서,The method of claim 1, 상기 슬라이드코어(30)는 저면에 한 쌍의 위치고정홈(34)이 형성되고, 한 쌍의 위치고정홈(34) 중 어느 일측에 대응하는 하금형(10')상에 위치고정볼(36)이 스프링(36a)에 의해 돌출되도록 구비되는 것을 특징으로 하는 내외측 이중 언더컷처리용 금형장치.The slide core 30 has a pair of position fixing grooves 34 formed on the bottom thereof, and the position fixing ball 36 on the lower die 10 'corresponding to any one side of the pair of position fixing grooves 34. The inner and outer double undercut mold apparatus, characterized in that is provided to protrude by the spring (36a). 삭제delete
KR2020080017405U 2008-12-30 2008-12-30 Mold device for internal and external double undercut processing KR200451371Y1 (en)

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KR101267508B1 (en) 2013-03-12 2013-05-27 구미에이테크솔루션주식회사 Double-injection devices

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CN108859017B (en) * 2018-05-24 2021-04-13 宁波方正汽车模具股份有限公司 Injection mold capable of rapidly opening and closing mold
CN110385833B (en) * 2019-08-27 2021-07-09 浙江日成模具有限公司 Injection mold

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Publication number Priority date Publication date Assignee Title
JP2001212851A (en) 2000-02-04 2001-08-07 Canon Inc Injection mold

Patent Citations (1)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
JP2001212851A (en) 2000-02-04 2001-08-07 Canon Inc Injection mold

Cited By (1)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
KR101267508B1 (en) 2013-03-12 2013-05-27 구미에이테크솔루션주식회사 Double-injection devices

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