KR100421131B1 - Mold for injection molding - Google Patents

Mold for injection molding Download PDF

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Publication number
KR100421131B1
KR100421131B1 KR10-2001-0003186A KR20010003186A KR100421131B1 KR 100421131 B1 KR100421131 B1 KR 100421131B1 KR 20010003186 A KR20010003186 A KR 20010003186A KR 100421131 B1 KR100421131 B1 KR 100421131B1
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KR
South Korea
Prior art keywords
mold
opening
cooling
molding
closing
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KR10-2001-0003186A
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Korean (ko)
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KR20020061998A (en
Inventor
정재혁
Original Assignee
에이테크솔루션(주)
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Priority to KR10-2001-0003186A priority Critical patent/KR100421131B1/en
Publication of KR20020061998A publication Critical patent/KR20020061998A/en
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Publication of KR100421131B1 publication Critical patent/KR100421131B1/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
    • B29C45/26—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
    • B29C45/26—Moulds
    • B29C45/27—Sprue channels ; Runner channels or runner nozzles
    • B29C45/2756—Cold runner channels
    • 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
    • B29C45/28—Closure devices therefor
    • 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
    • B29C45/7312—Construction of heating or cooling fluid flow channels

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

Abstract

본 발명은 사출성형용 금형에 관한 것으로, 특히 금형에 마련된 냉각유로의 개폐구조를 개선하여 성형물을 용이하게 빼낼 수 있도록 한 것이다.The present invention relates to an injection molding die, and in particular to improve the opening and closing structure of the cooling flow path provided in the mold to facilitate the removal of the molded article.

본 발명에 따른 사출성형용 금형은, 내부에 성형공간을 형성하도록 상호 합체와 분리 가능하게 결합되는 복수의 금형과, 상기 금형의 냉각을 위해 상기 금형 내부를 관통하여 형성된 냉각유로를 구비하는 사출성형용 금형에 있어서, 상기 냉각유로의 중도에 마련되어, 상기 복수의 금형이 합체될 때 상기 냉각유로가 열리고 상기 복수의 금형이 분리될 때 상기 냉각유로가 닫히도록 상기 냉각유로를 개폐하는 개폐밸브와; 상기 금형의 내부에 진퇴 가능하게 설치되어, 상기 복수의 금형의 합체 및 분리 동작에 따라 진퇴하면서 상기 개폐밸브를 개폐시키는 작동봉을 포함하는 것을 특징으로 한다.Injection mold according to the present invention, the injection molding having a plurality of molds detachably coupled with the mutual coalescing to form a molding space therein, and a cooling passage formed through the inside of the mold for cooling the mold A mold for use, comprising: an opening / closing valve provided in the middle of the cooling flow passage to open and close the cooling flow passage so that the cooling flow passage is opened when the plurality of molds are merged and the cooling flow passage is closed when the plurality of molds are separated; It is installed to be able to move forward and backward in the mold, characterized in that it comprises an operating rod for opening and closing the on-off valve while advancing in accordance with the coalescing and separating operation of the plurality of mold.

Description

사출성형용 금형{MOLD FOR INJECTION MOLDING}Injection Molding Mold {MOLD FOR INJECTION MOLDING}

본 발명은 사출성형용 금형에 관한 것으로, 더욱 상세하게는 금형에 마련된 냉각유로의 구조를 개선한 사출성형용 금형에 관한 것이다.The present invention relates to an injection molding mold, and more particularly, to an injection molding mold having an improved structure of a cooling passage provided in the mold.

일반적으로 사출성형용 금형은 내부에 제품의 외형과 상응하는 성형공간이 형성된 것으로, 성형공간에서 제조되는 성형물을 외부로 빼낼 수 있도록 상호 분리가 가능한 복수의 금형이 합체되어 이루어진다.In general, the injection molding die is formed with a molding space corresponding to the outer shape of the product, and is formed by combining a plurality of molds that can be separated from each other so that the molded product manufactured in the molding space can be taken out.

이러한 금형 중에는 통상 성형물의 중공부를 형성하도록 금형의 중앙을 관통하도록 설치되는 코어가 마련된 것이 있고, 금형이 분리될 때 제조된 성형물을 밀어주어 성형물이 금형으로부터 빠져 나오도록 코어의 주위에 다수의 이젝터 핀이 설치된 것이 있다. 또한 코어에는 성형과정에서 코어를 냉각시킬 수 있도록 코어의 중앙을 관통하는 냉각유로가 마련되어 외부로부터 공급된 냉각공기가 항시 흐르도록 되어 있다.Some of these molds are usually provided with a core installed to penetrate the center of the mold so as to form a hollow part of the molding, and a plurality of ejector pins around the core to push the molded product when the mold is separated so that the molding comes out of the mold. There is one installed. In addition, the core is provided with a cooling passage that penetrates the center of the core to cool the core during the molding process so that the cooling air supplied from the outside flows at all times.

그런데 이러한 구성의 종래 금형은 금형의 합체 및 분리동작과 무관하게 코어의 냉각유로를 통해 항상 냉각을 위한 압축공기가 흐르도록 되어 있기 때문에, 성형물을 빼내기 위해 금형이 분리할 때 냉각유로에서 분출되는 공기의 분출압력에 의해 성형물이 주변으로 이탈하는 문제가 있었다.However, the conventional mold of such a configuration is that the compressed air for cooling always flows through the cooling channel of the core irrespective of the coalescing and separating operation of the mold, so that air is ejected from the cooling channel when the mold is separated to remove the molding. There was a problem that the molded product is separated to the surrounding by the ejection pressure of.

본 발명은 이와 같은 문제점을 해결하기 위한 것으로, 본 발명의 목적은 금형이 분리될 때 냉각유로가 차단되도록 함으로써 공기의 분출에 의한 성형물의 이탈을 방지할 수 있는 사출성형용 금형을 제공하는 것이다.The present invention is to solve such a problem, an object of the present invention is to provide a mold for injection molding that can prevent the separation of the molding by the ejection of air by blocking the cooling flow path when the mold is separated.

도 1은 본 발명에 따른 사출성형용 금형의 구성을 보인 단면도이다.1 is a cross-sectional view showing the configuration of an injection molding mold according to the present invention.

도 2는 본 발명에 따른 사출성형용 금형의 단면도로, 제1금형과 제2금형이 분리된 상태를 보인 것이다.2 is a cross-sectional view of an injection molding mold according to the present invention, showing a state in which the first mold and the second mold are separated.

도 3은 본 발명에 따른 사출성형용 금형의 단면도로, 성형물의 분리동작을 보인 것이다.Figure 3 is a cross-sectional view of the injection molding mold according to the present invention, showing the separation operation of the molding.

* 도면의 주요 부분에 대한 부호의 설명 *Explanation of symbols on the main parts of the drawings

10: 제1금형, 11: 성형부재,10: first mold, 11: forming member,

13: 스프링수용부, 20: 제2금형,13: spring receiving part, 20: second mold,

30: 제1지지판, 31,71,83: 냉각유로,30: first support plate, 31, 71, 83: cooling flow path,

40: 제2지지판, 50: 이젝터 플레이트,40: second support plate, 50: ejector plate,

51: 이젝터 핀, 60: 스페이서 블록,51: ejector pin, 60: spacer block,

70: 코어, 80: 스프루 부시,70: core, 80: sprue bush,

91: 밸브홈, 92: 개폐부재,91: valve groove, 92: opening and closing member,

100: 작동봉, 110: 복원스프링.100: working rod, 110: restoring spring.

이러한 목적을 달성하기 위하여, 본 발명은, 내부에 성형공간을 형성하도록 상호 합체와 분리 가능하게 결합되는 복수의 금형과, 상기 금형의 냉각을 위해 상기 금형 내부를 관통하여 형성된 냉각유로를 구비하는 사출성형용 금형에 있어서, 상기 냉각유로의 중도에 마련되어, 상기 복수의 금형이 합체될 때 상기 냉각유로가 열리고 상기 복수의 금형이 분리될 때 상기 냉각유로가 닫히도록 상기 냉각유로를 개폐하는 개폐밸브와; 상기 금형의 내부에 진퇴 가능하게 설치되어, 상기 복수의 금형의 합체 및 분리 동작에 따라 진퇴하면서 상기 개폐밸브를 개폐시키는 작동봉을 포함하는 것을 특징으로 하는 사출성형용 금형을 제공한다.In order to achieve this object, the present invention, injection molding having a plurality of molds detachably coupled to each other to form a molding space therein, and a cooling passage formed through the inside of the mold for cooling the mold A molding die, comprising: an opening / closing valve provided in the middle of the cooling flow passage and opening and closing the cooling flow passage so that the cooling flow passage is opened when the plurality of molds are coalesced and the cooling flow passage is closed when the plurality of molds are separated; ; It is installed in the mold so as to be retracted, and provides an injection molding mold comprising a working rod for opening and closing the opening and closing valve while advancing in accordance with the coalescing and separating operation of the plurality of molds.

또 상기 개폐밸브는 상기 냉각유로의 중도에 형성된 밸브홈과, 상기 작동봉과 결합되어 상기 밸브홈 내를 진퇴하면서 상기 냉각유로를 개폐하는 개폐부재를 포함하는 것을 특징으로 한다.The on-off valve may include a valve groove formed in the middle of the cooling passage, and an opening / closing member coupled to the operating rod to open and close the cooling passage while advancing into the valve groove.

또한 상기 작동봉에는 상기 복수의 금형이 분리될 때 상기 작동봉의 일단이 일측 금형의 외부로 돌출하도록 상기 작동봉을 탄력 지지하는 복원스프링이 설치된 것을 특징으로 한다.In addition, the operating rod is characterized in that the restoring spring is installed elastically supporting the operating rod so that one end of the operating rod protrudes to the outside of the mold when the plurality of molds are separated.

이하에서는 본 발명에 따른 바람직한 실시 예를 첨부도면을 참조하여 상세히 설명한다.Hereinafter, with reference to the accompanying drawings a preferred embodiment according to the present invention will be described in detail.

본 발명에 따른 사출성형용 금형은 도 1에 도시된 바와 같이, 내부에 성형물(1)의 성형을 위한 성형공간이 형성되며 상호 합체와 분리가 가능한 판상의제1금형(10)과 제2금형(20)을 구비하며, 제1금형(10)과 제2금형(20)의 외측으로 이들을 지지하도록 설치된 제1지지판(30)과 제2지지판(40)을 구비한다. 또한 제1금형(10)과 제1지지판(30) 사이에는 이젝터 플레이트(50)를 수용하는 공간(62)을 형성하도록 스페이서 블록(60)이 설치된다.As shown in FIG. 1, the injection molding die according to the present invention has a molding space for forming the molded article 1 therein and is formed of a plate-shaped first mold 10 and a second mold, which can be separated from each other. And a first support plate 30 and a second support plate 40 installed to support them outwardly of the first mold 10 and the second mold 20. In addition, a spacer block 60 is installed between the first mold 10 and the first support plate 30 to form a space 62 for receiving the ejector plate 50.

또 제2금형(20)과 접하는 제1금형(10)의 일면에는 풀리 형태의 성형물(1)을 성형하기 위한 성형공간이 형성된 성형부재(11)가 장착되는데, 이 성형부재(11)는 양측에 고정나사(12)가 체결됨으로써 제1금형(10)에 고정된다. 또 제1금형(10)과 성형부재(11)의 중심부에는 성형물의 중공부를 형성하는 코어(70)가 이들을 관통하도록 설치되며, 코어(70)의 외측으로는 추후 성형물(1)을 금형으로부터 분리시키기 위한 다수의 이젝터 핀(51)이 설치된다. 이때 이젝터 핀(51)은 제1금형(10)과 성형부재(11)를 관통하여 성형공간에 이르도록 설치되며, 그 일단이 제1금형(10)과 제1지지판(30) 사이의 공간(62)에 진퇴 가능하게 설치된 이젝터 플레이트(50)에 고정된다. 즉 다수의 이젝터 핀(51)은 이젝터 플레이트(50)의 동작과 연동한다. 그리고 제2금형(20)의 중앙에는 용융된 수지가 성형공간의 내부로 진입되도록 안내하는 런너(81)와 게이트(82)가 형성된 스프루 부시(80)가 설치된다.In addition, on one surface of the first mold 10 in contact with the second mold 20, a molding member 11 having a molding space for forming the pulley shaped molding 1 is mounted, and the molding members 11 are both sides. The fixing screw 12 is fastened to the first mold 10. In addition, at the center of the first mold 10 and the forming member 11, a core 70 for forming a hollow portion of the molded product penetrates through them, and the molding 1 is later separated from the mold outside the core 70. A plurality of ejector pins 51 are installed for the purpose. At this time, the ejector pin 51 is installed to penetrate the first mold 10 and the forming member 11 to the molding space, one end of the space between the first mold 10 and the first support plate 30 ( It is fixed to the ejector plate (50) installed to be retractable in (62). That is, the plurality of ejector pins 51 interlock with the operation of the ejector plate 50. In addition, a sprue bush 80 having a runner 81 and a gate 82 formed to guide the molten resin into the molding space is installed at the center of the second mold 20.

또한 본 발명에 따른 금형에는 성형물(1)의 성형이 이루어질 때 코어(70)를 냉각시키기 위한 것으로 냉각유로(31,71,83)가 마련된다. 이 냉각유로는 제1지지판(30)의 외측 단부로부터 중앙부로 길게 형성된 제1유로(31)와, 제1유로(31)와 연계되도록 코어(70)의 중앙에 형성된 제2유로(71), 그리고 제2유로(71)와 연계되도록 스프루 부시(80)에 형성된 제3유로(83)를 포함한다. 여기서 부호 72는 제1유로(31)와 제2유로(71)를 연결하는 연결관이다. 이러한 구성은 외부로부터 연장된 접속관(32)을 통해 제1유로(31)로 공급된 냉각 공기가 제2유로(71)와 제3유로(83)를 통과하여 외부로 배출되도록 함으로써 코어(70)의 냉각이 이루어지도록 한 것이다.In addition, the mold according to the present invention is to cool the core 70 when the molding (1) is formed is provided with cooling passages (31, 71, 83). The cooling passage has a first flow passage 31 formed long from the outer end of the first support plate 30 to the center portion, a second flow passage 71 formed at the center of the core 70 so as to be connected to the first flow passage 31, And a third flow path 83 formed in the sprue bush 80 so as to be associated with the second flow path 71. Here, reference numeral 72 denotes a connecting pipe connecting the first passage 31 and the second passage 71. This configuration allows the cooling air supplied to the first flow passage 31 through the connection pipe 32 extending from the outside to be discharged to the outside through the second flow passage 71 and the third flow passage 83. ) Cooling is achieved.

또한 본 발명에 따른 금형에는 성형물의 제조 후 금형이 분리될 때 제1유로(31)가 폐쇄됨으로써 냉각공기의 공급이 차단되도록 하는 유로개폐수단이 마련된 것이 특징이다. 유로개폐수단은 제1지지판(30)의 제1유로(31) 중도에 마련되는 개폐밸브(90)와, 이 개폐밸브(90)를 동작시키도록 제1금형(10)과 스페이서 블록(60)을 관통하여 개폐밸브(90)에 연계되는 작동봉(100)을 포함한다.In addition, the mold according to the present invention is characterized in that the flow path opening and closing means for blocking the supply of cooling air by closing the first flow path 31 when the mold is separated after the manufacture of the molding. The flow opening and closing means includes an on / off valve 90 provided in the middle of the first flow path 31 of the first support plate 30, and the first mold 10 and the spacer block 60 to operate the on / off valve 90. It includes an operating rod 100 connected to the on-off valve 90 through.

좀더 상세히 설명하면, 개폐밸브(90)는 제1유로(31)가 형성된 방향과 교차하는 방향으로 제1유로(31)의 내경보다 큰 직경으로 형성된 밸브홈(91)과, 이 밸브홈(91) 내부를 진퇴하도록 설치된 피스톤 형태의 개폐부재(92)로 구성되며, 밸브홈(91)의 일측 단부는 커버(93)를 통해 폐쇄된다. 이러한 구성은 제1유로(31)보다 직경이 큰 개폐부재(92)가 밸브홈(91)의 내부를 진퇴하면서 제1유로(31)를 차단하거나 열어줄 수 있도록 한 것이다. 작동봉(100)은 개폐부재(92)를 진퇴시키기 위한 것으로, 일단이 개폐부재(92)에 연결되고 타단이 스페이서 블록(60)과 제1금형(10)을 관통하여 제2금형(20)의 표면에 접하도록 설치된다.In more detail, the on-off valve 90 has a valve groove 91 formed with a diameter larger than the inner diameter of the first passage 31 in a direction crossing the direction in which the first passage 31 is formed, and the valve groove 91. It is composed of a piston-shaped opening and closing member 92 installed to move forward and backward, one end of the valve groove 91 is closed through the cover 93. This configuration allows the opening and closing member 92 having a diameter larger than that of the first passage 31 to block or open the first passage 31 while advancing and retreating the inside of the valve groove 91. The actuating rod 100 is for advancing the opening / closing member 92, one end of which is connected to the opening and closing member 92, and the other end penetrates through the spacer block 60 and the first mold 10 to form the second mold 20. It is installed to contact the surface of the.

또한 작동봉(100)의 중도에는 작동봉(100)이 평소 제2금형(20) 쪽으로 전진하려는 복원력을 갖도록 작동봉(100)을 탄력 지지하는 복원스프링(110)이 설치된다. 이를 위해 작동봉(100)의 중도에는 그 외면에 끼워진 복원스프링(110)이 지지될 수 있도록 작동봉(100)의 외경보다 크게 형성된 지지턱(101)이 형성되고, 제1금형(10)에는 지지턱(101)과 복원스프링(110)을 진퇴 가능하게 수용하도록 하는 스프링수용부(13)가 마련된다. 그리고 복원스프링(110)은 일단이 지지턱(101)에 지지되고 타단이 스페이서 블록(60)에 지지된다.In addition, in the middle of the operating rod 100, the restoring spring 110 for elastically supporting the operating rod 100 is installed so that the operating rod 100 has a restoring force to advance toward the second mold 20. To this end, a supporting jaw 101 formed larger than the outer diameter of the operating rod 100 is formed in the middle of the operating rod 100 so that the restoration spring 110 fitted to the outer surface thereof is supported, and the first mold 10 A spring accommodating part 13 is provided to accommodate the support jaw 101 and the restoration spring 110 in a retractable manner. The restoration spring 110 has one end supported by the support jaw 101 and the other end supported by the spacer block 60.

이러한 구성들은 제1금형(10)과 제2금형(20)이 분리될 때 작동봉(100)이 제2금형(20) 쪽으로 전진함으로써 밸브홈(91) 내부의 개폐부재(92)가 작동봉(100)을 따라 이동하여 제1유로(31)를 차단하도록 한 것이다. 그리고 제1금형(10)과 제2금형(20)이 합체될 때에는 작동봉(100)이 제2금형(20)에 밀려 반대방향으로 움직이면서 개폐부재(92)를 역방향으로 밀어주어 제1유로(31)를 열어주도록 한 것이다.These configurations are such that when the first mold 10 and the second mold 20 are separated, the operating rod 100 is advanced toward the second mold 20 so that the opening / closing member 92 inside the valve groove 91 is operated. It moves along the 100 to block the first passage 31. When the first mold 10 and the second mold 20 are combined, the operating rod 100 is pushed against the second mold 20 and moved in the opposite direction to push the opening / closing member 92 in the opposite direction to the first flow path. 31) to open.

다음은 이러한 구성의 본 발명에 따른 사출성형용 금형을 통한 성형물의 제조 및 금형의 분리동작을 설명한다.The following describes the production of the molding through the injection molding mold and the separation operation of the mold according to the present invention of this configuration.

금형이 합체되면, 코어(70)의 외면, 성형부재(11)의 내면, 그리고 스프루 부시(80)의 일면을 통해 성형물(1)의 성형공간이 형성된다. 이러한 상태에서 스프루 부시(80)의 런너(81)와 게이트(82)를 통해 공급되는 용융수지가 성형공간 내부에 채워지면, 용융수지가 응고되면서 성형물(1)이 제조된다. 그리고 금형이 합체될 때에는 작동봉(100)과 개폐부재(92)가 B방향으로 이동되어 제1유로(31)가 열린 상태이므로 성형물(1)이 성형되는 과정에서 냉각유로(31,71,83)에는 냉각을 위한 공기가 흐른다. 즉 코어(70)의 냉각이 이루어진다.When the mold is coalesced, a molding space of the molding 1 is formed through the outer surface of the core 70, the inner surface of the molding member 11, and one surface of the sprue bush 80. In this state, when the molten resin supplied through the runner 81 and the gate 82 of the sprue bush 80 is filled in the molding space, the molding 1 is manufactured while the molten resin solidifies. And when the mold is coalesced, the operating rod 100 and the opening / closing member 92 are moved in the B direction so that the first flow path 31 is opened, and thus the cooling flow paths 31, 71, and 83 are formed in the process of forming the molding 1. ) Flows for cooling. That is, the core 70 is cooled.

제조된 성형물(1)을 외부로 빼낼 때에는 먼저 도 2에 도시된 바와 같이, 제2금형(20)이 제1금형(10)으로부터 분리되는데, 이때 성형물(1)과 연결된 스프루 부시(80)의 게이트(82)부분이 분리된다. 또한 이때는 제1금형(10)과 제2금형(20)이 이격됨에 따라 작동봉(100)이 복원스프링(110)의 탄성에 의해 제2금형(20) 쪽으로 전진하게 되므로, 작동봉(100)과 연동하는 개폐부재(92)가 A방향으로 이동하면서 제1유로(31)를 차단한다. 즉 냉각공기의 공급이 차단된다.When removing the manufactured molding 1 to the outside, first, as shown in FIG. 2, the second mold 20 is separated from the first mold 10, wherein the sprue bush 80 connected to the molding 1 is formed. The gate 82 portion of is separated. In this case, as the first mold 10 and the second mold 20 are spaced apart, the operating rod 100 is advanced toward the second mold 20 by the elasticity of the restoring spring 110, and thus, the operating rod 100. The opening and closing member 92 interlocking with each other moves in the A direction to block the first flow passage 31. That is, the supply of cooling air is cut off.

다음으로 도 3에 도시된 바와 같이, 이젝터 플레이트(50)가 제2금형(20) 쪽으로 전진하면 다수의 이젝터 핀(51)이 성형물(1)을 밀어줌으로써, 성형물(1)이 금형의 외부로 빠져 나온다. 이처럼 본 발명에 따른 금형은 냉각공기의 공급이 차단된 상태에서 성형물(1)이 빠져 나오기 때문에, 냉각공기의 분출압력에 의한 성형물(1)의 이탈을 방지할 수 있게 된다.Next, as shown in FIG. 3, when the ejector plate 50 is advanced toward the second mold 20, the plurality of ejector pins 51 push the molding 1 so that the molding 1 is moved out of the mold. Come out. As described above, the mold 1 according to the present invention is prevented from leaving the molding 1 due to the ejection pressure of the cooling air because the molding 1 exits in a state in which the supply of the cooling air is blocked.

이상에서 상세히 설명한 바와 같이, 본 발명에 따른 사출성형용 금형은 유로개폐수단을 통해 금형이 합체될 때 냉각유로가 열리고, 금형이 분리될 때 냉각유로가 차단되기 때문에, 냉각 공기의 분출에 따른 성형물의 이탈을 방지할 수 있고 이를 통해 성형물을 금형으로부터 용이하게 빼낼 수 있는 효과가 있다.As described in detail above, the injection molding mold according to the present invention is a cooling channel is opened when the mold is coalesced through the channel opening and closing means, the cooling channel is blocked when the mold is separated, the molding according to the ejection of the cooling air It is possible to prevent the departure of the through which there is an effect that can be easily removed from the mold.

Claims (4)

내부에 성형공간을 형성하도록 상호 합체와 분리 가능하게 결합되는 복수의 금형과, 상기 금형의 냉각을 위해 상기 금형 내부를 관통하여 형성된 냉각유로를 구비하는 사출성형용 금형에 있어서,In the mold for injection molding having a plurality of molds detachably coupled to each other to form a molding space therein, and a cooling passage formed through the inside of the mold for cooling the mold, 상기 냉각유로의 중도에 마련되어, 상기 복수의 금형이 합체될 때 상기 냉각유로가 열리고 상기 복수의 금형이 분리될 때 상기 냉각유로가 닫히도록 상기 냉각유로를 개폐하는 개폐밸브와;An opening / closing valve provided in the middle of the cooling passage, the opening and closing valve opening and closing the cooling passage so that the cooling passage is opened when the plurality of molds are coalesced and the cooling passage is closed when the plurality of molds are separated; 상기 금형의 내부에 진퇴 가능하게 설치되어, 상기 복수의 금형의 합체 및 분리 동작에 따라 진퇴하면서 상기 개폐밸브를 개폐시키는 작동봉을 포함하는 것을 특징으로 하는 사출성형용 금형.The mold for injection molding, characterized in that it is installed in the mold so as to be retractable, the operating rod for opening and closing the opening and closing valve while advancing in accordance with the coalescing and separating operation of the plurality of molds. 삭제delete 제1항에 있어서,The method of claim 1, 상기 개폐밸브는 상기 냉각유로의 중도에 형성된 밸브홈과, 상기 작동봉과 결합되어 상기 밸브홈 내를 진퇴하면서 상기 냉각유로를 개폐하는 개폐부재를 포함하는 것을 특징으로 하는 사출성형용 금형.The opening and closing valve is an injection molding mold comprising a valve groove formed in the middle of the cooling passage, and the opening and closing member for opening and closing the cooling passage while advancing into the valve groove coupled to the operating rod. 제1항 또는 제3항에 있어서,The method according to claim 1 or 3, 상기 작동봉에는 상기 복수의 금형이 분리될 때 상기 작동봉의 일단이 일측 금형의 외부로 돌출하도록 상기 작동봉을 탄력 지지하는 복원스프링이 설치된 것을 특징으로 하는 사출성형용 금형.The actuating rod is a mold for injection molding, characterized in that the restoring spring for elastically supporting the actuating rod is installed so that one end of the actuating rod protrudes out of one mold when the plurality of molds are separated.
KR10-2001-0003186A 2001-01-19 2001-01-19 Mold for injection molding KR100421131B1 (en)

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Citations (5)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
KR870016273U (en) * 1986-04-29 1987-11-24 주식회사 금성사 Cooling device for mold for blowing fan of blower
JPS6345018A (en) * 1987-06-12 1988-02-26 Toyo Mach & Metal Co Ltd Piping structure of cooling water in injection molding machine
JPH07214626A (en) * 1994-02-03 1995-08-15 Sanyo Electric Co Ltd Injection mold
JPH08290452A (en) * 1995-04-25 1996-11-05 Sanyo Electric Co Ltd Mold for injection molding
JPH08323759A (en) * 1995-05-30 1996-12-10 Masuko Seisakusho:Kk Mold apparatus

Patent Citations (5)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
KR870016273U (en) * 1986-04-29 1987-11-24 주식회사 금성사 Cooling device for mold for blowing fan of blower
JPS6345018A (en) * 1987-06-12 1988-02-26 Toyo Mach & Metal Co Ltd Piping structure of cooling water in injection molding machine
JPH07214626A (en) * 1994-02-03 1995-08-15 Sanyo Electric Co Ltd Injection mold
JPH08290452A (en) * 1995-04-25 1996-11-05 Sanyo Electric Co Ltd Mold for injection molding
JPH08323759A (en) * 1995-05-30 1996-12-10 Masuko Seisakusho:Kk Mold apparatus

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