KR100569132B1 - Sprue division device of plastic mold - Google Patents

Sprue division device of plastic mold Download PDF

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Publication number
KR100569132B1
KR100569132B1 KR1020030070604A KR20030070604A KR100569132B1 KR 100569132 B1 KR100569132 B1 KR 100569132B1 KR 1020030070604 A KR1020030070604 A KR 1020030070604A KR 20030070604 A KR20030070604 A KR 20030070604A KR 100569132 B1 KR100569132 B1 KR 100569132B1
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South Korea
Prior art keywords
plastic
mold
nozzle
plastic mold
cooling tube
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KR1020030070604A
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Korean (ko)
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KR20050035322A (en
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하현성
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기아자동차주식회사
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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
    • B29C45/27—Sprue channels ; Runner channels or runner nozzles
    • B29C45/2701—Details not specific to hot or 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
    • B29C45/72—Heating or cooling
    • B29C45/73—Heating or cooling of the mould
    • B29C45/7312—Construction of heating or cooling fluid flow 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
    • B29C45/2701—Details not specific to hot or cold runner channels
    • B29C2045/2724—Preventing stringing of the moulding material

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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 수지 주입구를 분할 개선함으로써 스트링을 방지하여 플라스틱 성형 불량을 방지하는 플라스틱 금형의 탕구 분할장치에 관한 것으로, 플라스틱 금형의 탕구에서 탕구 노즐 상단 끝단부에 장착되어 탕구를 분할하는 중간 막음 핀을 통해 스트링을 방지하여 플라스틱 성형 불량을 방지한다.The present invention relates to a splitting device of a plastic mold which prevents string molding by dividing and improving the resin injection hole, and prevents plastic molding defects. Prevents plastic molding defects by preventing strings through.

플라스틱, 금형, 탕구Plastic, mold, Tanggu

Description

플라스틱 금형의 탕구 분할장치{SPRUE DIVISION DEVICE OF PLASTIC MOLD}Spout divider for plastic molds {SPRUE DIVISION DEVICE OF PLASTIC MOLD}

도 1은 본 발명의 실시예에 따른 플라스틱 금형의 탕구 분할장치의 구성을 도시한 도면.BRIEF DESCRIPTION OF THE DRAWINGS Fig. 1 is a view showing the configuration of a pouring apparatus of a plastic mold according to an embodiment of the present invention.

도 2는 본 발명의 실시예에 따른 플라스틱 금형에 장착되는 플라스틱 냉각관의 장착상태를 도시한 도면.2 is a view showing a mounting state of the plastic cooling tube mounted to the plastic mold according to an embodiment of the present invention.

도 3은 플라스틱 냉각관 미부식 상태를 비교한 도면.3 is a view comparing the non-corrosive state of the plastic cooling tube.

본 발명은 플라스틱 금형의 탕구 분할장치에 관한 것이다.The present invention relates to a split mouth device of a plastic mold.

통상적으로, 플라스틱 금형에서 용융된 수지가 금형의 주입구를 통하여 금형 내에 주입(사출)되어서 제품이 성형된다. Typically, the molten resin in the plastic mold is injected (injected) into the mold through the injection port of the mold to form the product.

이때 금형에서 주입구 부분을 탕구(Sprue)라 하는데 구조는 아이스크림 콘형상의 원통형으로 되어있고 수지의 흐름 및 빠짐을 고려하여 구배를 주어서 주입구 시작부는 좁고, 주입구 끝부분은 넓은 피라미드형상의 콘 모양으로 형성한다.In this case, the inlet part of the mold is called sprue. The structure is cylindrical in the shape of an ice cream cone and gives a gradient in consideration of the flow and dropping of the resin so that the beginning of the inlet is narrow and the end of the inlet is formed into a wide pyramid cone. .

성형 사출이 완료되면 수지 사출 후 주입구 시작부 좁은 부분에서 용융된 수지가 끊어진다. After the injection molding is completed, the molten resin is broken at the narrow portion at the beginning of the injection hole after the resin injection.

이때 끊어진 부분의 수지가 실모양으로 길게 이어져 나온다.At this time, the resin of the broken portion continues to form a long.

이를 스트링(String) 또는 실 버(Burr)라고 하는데, 금형이나 성형 제품의 표면에 부착되어 다음 성형시 불량을 발생시키며, 제품은 불량 처리되고 금형에서는 이를 제거(청소)해야 하는 문제점이 있었다.This is called a string or silver, which is attached to the surface of a mold or a molded product, and causes a defect in the next molding, and the product is treated badly and the mold has to be removed (cleaned).

본 발명의 목적은 수지 주입구를 분할 개선함으로써 스트링을 방지하여 플라스틱 성형 불량을 방지하는 플라스틱 금형의 탕구 분할장치를 제공하는데 있다.SUMMARY OF THE INVENTION An object of the present invention is to provide a spout divider for a plastic mold which prevents string molding by dividing and improving the resin inlet to prevent plastic molding defects.

상기와 같은 목적을 달성하기 위하여 본 발명은 플라스틱 금형의 탕구 분할장치에 있어서, 상기 플라스틱 금형의 탕구에서 탕구 노즐 상단 끝단부에 장착되어 탕구를 분할하는 중간 막음 핀을 통해 스트링을 방지하여 플라스틱 성형 불량을 방지하는 것을 특징으로 한다.In order to achieve the above object, the present invention provides a device for splitting a mold of a plastic mold, which prevents a string through a middle blocking pin that is mounted at an upper end of a nozzle of the plastic mold and divides the mold. Characterized in that to prevent.

이하 본 발명의 바람직한 실시예를 첨부한 도면을 참조하여 상세히 설명한다. 하기 설명 및 첨부 도면과 같은 많은 특정 상세들이 본 발명의 보다 전반적인 이해를 제공하기 위해 나타나 있으나, 이들 특정 상세들은 본 발명의 설명을 위해 예시한 것으로 본 발명이 그들에 한정됨을 의미하는 것은 아니다. 그리고 본 발명의 요지를 불필요하게 흐릴 수 있는 공지 기능 및 구성에 대한 상세한 설명은 생략한다.Hereinafter, exemplary embodiments of the present invention will be described in detail with reference to the accompanying drawings. While many specific details, such as the following description and the annexed drawings, are shown to provide a more general understanding of the invention, these specific details are illustrated for the purpose of explanation of the invention and are not meant to limit the invention thereto. And a detailed description of known functions and configurations that may unnecessarily obscure the subject matter of the present invention will be omitted.

도 1 내지 도 3을 참조하여 본 발명의 실시예에 따른 플라스틱 금형(210)의 탕구(100) 분할장치의 구성을 설명한다.Referring to Figures 1 to 3 will be described the configuration of the spout 100 of the plastic mold 210 according to an embodiment of the present invention.

도 2는 본 발명의 실시예에 따른 플라스틱 금형(210)에 장착되는 플라스틱 냉각관(230)의 장착상태를 도시한 도면이며, 도 3은 종래 기술의 금형 냉각관과 본 발명의 실시예에 따른 플라스틱 냉각관(230)의 부식 상태를 비교한 도면이다.2 is a view showing a mounting state of the plastic cooling tube 230 mounted to the plastic mold 210 according to an embodiment of the present invention, Figure 3 is a mold cooling tube of the prior art and in accordance with an embodiment of the present invention A diagram comparing the corrosion state of the plastic cooling tube 230.

본 발명의 실시예는 플라스틱 금형(210)의 탕구(100)(Sprue) 분할장치에 있어서, 플라스틱 금형(210)의 탕구(100)에서 탕구 노즐 상단 끝단부(102)에 장착되어 탕구(100)를 분할하는 중간 막음 핀(110)(Pin)을 통해 탕구(100) 전단 저항을 감소시키고 스트링(String, 실 버)을 방지하여 플라스틱 성형 불량을 방지하는 것을 특징으로 한다.In the embodiment of the present invention, in the spout 100 (Sprue) splitting device of the plastic mold 210, the spout 100 is mounted on the spout nozzle upper end 102 in the spout 100 of the plastic mold 210 It is characterized in that to prevent the molding failure by reducing the shearing resistance (100) through the middle blocking pin (110) (Pin) for dividing and preventing the string (String, silver).

중간 막음 핀(110)은 플라스틱 성형시 수지가 도 1에 도시된 바와 같이 중간 막음 핀(110)을 통해 분할되는 탕구(100)의 양방향으로 갈라져서 들어가도록 탕구 노즐(Sprue Nozzle)의 상단 끝단부(102) 원통 평면 위에 설정 방향으로 설치된다.Intermediate blocking pin 110 is the upper end of the sputter nozzle (Sprue Nozzle) so that the resin is divided into the bidirectional direction of the spout 100 is divided through the middle blocking pin 110, as shown in Figure 1 102) It is installed in the set direction on the cylindrical plane.

중간 막음 핀(110)을 통해 수지 주입구를 분할하는 구조는 스트링이 발생하는 탕구 끝단부(102)(수지가 끊어지는 부위) 구조를 변경한다.The structure of dividing the resin inlet through the intermediate blocking pin 110 changes the structure of the mouth end 102 (where the resin is broken) in which the string is generated.

이곳은 통상적으로 원통형으로 형성되며, 원통 평면 위에 가로 방향으로 중간 막음 핀(110)을 설치하여 생산할 경우 이 부분이 노치(Notch) 효과를 발생하여 수지가 양방향으로 갈라져서 들어감으로써 중앙부에 발생하던 스트링, 실 버가 발생하지 않게 된다.This is usually formed in a cylindrical shape, when produced by installing the intermediate blocking pin 110 in the horizontal direction on the cylindrical plane, this part generates a notch (Notch) effect, the resin was split in both directions to enter the string, Silver will not occur.

한편, 본 발명의 실시예에 따른 플라스틱 금형(210)은 도 2에 도시된 바와 같이 플라스틱 냉각관(230)이 설치된다.On the other hand, the plastic mold 210 according to the embodiment of the present invention is provided with a plastic cooling tube 230 as shown in FIG.

플라스틱 냉각관(230)의 두께는 t=1mm 원통형으로 하고 외곽 사이즈는 플라 스틱 냉각관(230) 크기를 고려하여 조립 공차-0.3으로 하여 성형되어 금형 냉각기(220)를 통해 공급되는 냉각수의 흐름을 안내하며, 내열 티피오(TPO ; Thermoplastic Polyolefin) 소재로 형성한다.The thickness of the plastic cooling tube 230 is t = 1 mm cylindrical and the outer size is formed by the assembly tolerance -0.3 in consideration of the size of the plastic cooling tube 230 to the flow of the cooling water supplied through the mold cooler 220 It is formed of a heat-resistant Tipo (TPO; Thermoplastic Polyolefin) material.

유연성이 뛰어난 티피오 소재는 계기판이나 도어 패널 등의 차량 내장재로 사용된다.Highly flexible tipio materials are used for interior materials such as dashboards and door panels.

플라스틱 냉각관(230)은 플라스틱 금형(210)에 설치 삽입 후 막음 볼트(240)로 체결되며, 금형 냉각기(220)를 통해 냉각수가 공급되는 입구(IN)와 금형 냉각기(220)로 배출되는 출구(OUT)에 각각 커플러(Coupler)가 장착된다.The plastic cooling tube 230 is inserted into the plastic mold 210 and then inserted into the blocking bolt 240, and the inlet IN and the outlet discharged to the mold cooler 220 are supplied to the cooling water through the mold cooler 220. Couplers (Coupler) are respectively mounted at (OUT).

즉, 플라스틱 금형(210) 내에 플라스틱 냉각관(230)을 설치 삽입 후 막음 볼트(240)를 체결하고, 금형 냉각수와 플라스틱 냉각관(230)의 커플러 입구와 출구를 연결한다.That is, after installing and inserting the plastic cooling tube 230 into the plastic mold 210, the blocking bolt 240 is fastened, and the coupler inlet and the outlet of the mold cooling water and the plastic cooling tube 230 are connected.

그리고, 금형 냉각기(220)의 탱크(Tank) 내에 물과 세정액을 희석한다.Then, water and the washing solution are diluted in a tank of the mold cooler 220.

냉각수는 수배관 세정제 10%와 슬러지 제거제로 세정제의 1/10을 처방한다.Cooling water is formulated with 10% water pipe cleaner and 1/10 of the cleaner as sludge remover.

이러한 상태에서 금형 냉각기(220)의 펌프(Pump)를 이용해 세정제와 희석된 물을 플라스틱 냉각관(230)내에 순환시킨다.In this state, the cleaning agent and the diluted water are circulated in the plastic cooling tube 230 by using a pump of the mold cooler 220.

냉각수 적용 방법을 설명하면, 냉각수로 사용하고 있는 공업 용수에 부식 처방제를 설정량(7%)만큼 희석하여 냉각함으로써 플라스틱 냉각관(230) 내부 외에도, 배관, 온도 조절기, 냉동기 내부등 주변 장치의 부식(녹), 스케일 방지를 할 수 있다.The application method of the cooling water is to dilute and cool the corrosion prescription with a predetermined amount (7%) in the industrial water used as the cooling water. Corrosion (rust) and scale can be prevented.

사용되는 부식 처방제의 내구 연한은 약 5년 정도이며, 1년 주기로 농도를 체크한 후 보충한다.The service life of the corrosion prescriptions used is about 5 years. Check the concentration every year and replenish.

도 3은 플라스틱 냉각관(230) 설치 전과 설치 후의 모습이다.3 is a view before and after installing the plastic cooling tube 230.

도 3을 참조하면, 플라스틱 냉각관(230) 내부에는 부식과 스케일(Scale)이 발생하지 않고 초기의 플라스틱 냉각관(230) 직경을 확보할 수 있다.Referring to FIG. 3, the plastic cooling tube 230 may have an initial diameter of the plastic cooling tube 230 without corrosion and scale occurring inside the plastic cooling tube 230.

플라스틱 냉각관(230)을 설치 적용시 부식 방지로 인한 금형 및 사출기 주변 기기의 수명을 연장시키며, 유체 흐름에서 기포의 발생을 막아 열전달 효율 향상시키는 효과가 있다.When the plastic cooling tube 230 is installed and applied, it prolongs the life of mold and injection machine peripheral devices due to corrosion protection, and has an effect of improving heat transfer efficiency by preventing generation of bubbles in the fluid flow.

또한, 플라스틱 냉각관(230) 내부에 금속 부식 생성물, 물때, 침전 생성, 스케일의 발생을 막아 냉각 효율을 향상시켜 냉각 시간 단축으로 생산성 향상을 도모한다.In addition, by preventing the generation of metal corrosion products, scale, sedimentation, scale in the plastic cooling tube 230 to improve the cooling efficiency to improve the productivity by reducing the cooling time.

상기한 바와 같이 본 발명의 실시예는 플라스틱 금형(210) 탕구(100)의 탕구 노즐 상단 끝단부(102)에 중간 막음 핀(110)을 개발 적용하여 수지 주입구를 분할 개선함으로써 스트링(String, 실 버)을 방지하여 플라스틱 성형 불량을 방지한다.As described above, the embodiment of the present invention develops and applies the intermediate blocking pin 110 to the upper end portion 102 of the nozzle of the plastic nozzle 210, the nozzle 100, and divides and improves the resin injection hole. To prevent plastic molding defects.

상술한 바와 같이 본 발명에 따른 플라스틱 금형의 탕구 분할장치는 탕구 노즐 상단 끝단부에 탕구 중간 막음 핀을 개발 적용하여 수지 주입구를 분할 개선함으로써 스트링을 방지하여 플라스틱 성형 불량을 방지한다.As described above, the apparatus for splitting a mouthpiece of a plastic mold according to the present invention develops and applies a mouthpiece middle blocking pin at an upper end of a mouthpiece nozzle to prevent a plastic molding defect by dividing and improving a resin injection hole.

또한, 금형 내부에 파팅(Parting)면 변형 방지로 버(Burr) 제거 공정을 축소하고 작업 편의성 도모를 통해 생산성 향상의 효과가 있다.In addition, there is an effect of improving productivity through the reduction of the burr removal process by preventing parting surface deformation inside the mold and the improvement of work convenience.

Claims (4)

삭제delete 삭제delete 플라스틱 금형의 탕구에서 탕구 노즐 상단 끝단부에 장착되어 탕구를 분할하는 중간 막음 핀을 통해 스트링을 방지하여 플라스틱 성형 불량을 방지하는 플라스틱 금형의 탕구 분할장치에 있어서, In the molten metal splitting device of the plastic mold to prevent the plastic molding failure by preventing the string through the intermediate blocking pin is divided into the upper end of the molten metal nozzle in the molten metal of the molten metal, 상기 중간 막음 핀은 이를 통하여 플라스틱 성형시 수지가 분할되는 탕구의 양방향으로 갈라져서 들어가도록 상기 탕구 노즐의 상단 끝단부 원통 평면 위에 설정 방향으로 설치되며, The intermediate blocking pin is installed in the setting direction on the cylindrical end plane of the upper end of the nozzle nozzle so that the resin is split in both directions of the nozzle in which the resin is divided during plastic molding. 동시에, 상기 플라스틱 금형에 장착되어 금형 냉각기를 통해 공급되는 냉각수의 흐름을 안내하는 냉각관은 내열 티피오 소재로 원통형으로 형성되는 플라스틱 냉각관으로 성형하는 것을 특징으로 하는 플라스틱 금형의 탕구 분할장치.At the same time, the cooling pipe which is mounted on the plastic mold and guides the flow of the cooling water supplied through the mold cooler is a hot water splitting device of a plastic mold, characterized in that formed into a plastic cooling tube formed in a cylindrical shape of heat-resistant Tipio material. 제3항에 있어서, 상기 플라스틱 냉각관은 The method of claim 3, wherein the plastic cooling tube 상기 플라스틱 금형에 설치 삽입 후 막음 볼트로 체결되며, 상기 금형 냉각기를 통해 냉각수가 공급되는 입구와 상기 금형 냉각기로 배출되는 출구에 각각 커 플러가 장착되는 것을 특징으로 하는 플라스틱 금형의 탕구 분할장치.After the installation is inserted into the plastic mold is fastened with a blocking bolt, a coupler is installed in the plastic mold, characterized in that the coupler is mounted at each of the inlet and the outlet discharged to the mold cooler supplied with the cooling water.
KR1020030070604A 2003-10-10 2003-10-10 Sprue division device of plastic mold KR100569132B1 (en)

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