KR200367193Y1 - Ejaculation-sprue installing cool-jacket - Google Patents
Ejaculation-sprue installing cool-jacket Download PDFInfo
- Publication number
- KR200367193Y1 KR200367193Y1 KR20-2004-0023497U KR20040023497U KR200367193Y1 KR 200367193 Y1 KR200367193 Y1 KR 200367193Y1 KR 20040023497 U KR20040023497 U KR 20040023497U KR 200367193 Y1 KR200367193 Y1 KR 200367193Y1
- Authority
- KR
- South Korea
- Prior art keywords
- sprue
- cooling
- injection
- jacket
- die
- Prior art date
Links
- 238000001816 cooling Methods 0.000 claims abstract description 27
- 238000002347 injection Methods 0.000 claims description 23
- 239000007924 injection Substances 0.000 claims description 23
- 208000015943 Coeliac disease Diseases 0.000 description 34
- 239000000498 cooling water Substances 0.000 description 13
- 238000004519 manufacturing process Methods 0.000 description 6
- XLYOFNOQVPJJNP-UHFFFAOYSA-N water Substances O XLYOFNOQVPJJNP-UHFFFAOYSA-N 0.000 description 5
- 239000002826 coolant Substances 0.000 description 4
- 238000001746 injection moulding Methods 0.000 description 3
- 239000000463 material Substances 0.000 description 3
- 238000007599 discharging Methods 0.000 description 2
- 238000007711 solidification Methods 0.000 description 2
- 230000008023 solidification Effects 0.000 description 2
- 239000000243 solution Substances 0.000 description 2
- 238000002844 melting Methods 0.000 description 1
- 230000008018 melting Effects 0.000 description 1
- 238000000034 method Methods 0.000 description 1
- 230000002093 peripheral effect Effects 0.000 description 1
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
- B29C45/26—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
- B29C45/26—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
- B29C45/72—Heating or cooling
- B29C45/73—Heating or cooling of the mould
- B29C45/7312—Construction of heating or cooling fluid flow channels
Abstract
본 고안은 냉각재킷을 설치하여 냉각효율을 높여서 스프루 내의 플라스틱용융액의 온도를 크게 낮출 수 있는 스프루에 관한 것이다.The present invention relates to a sprue that can reduce the temperature of the plastic melt in the sprue by increasing the cooling efficiency by installing a cooling jacket.
Description
본 고안은 사출용 스프루에 관한 것으로, 더욱 상세하게는 냉각재킷을 설치하여 냉각효율을 높여서 스프루 내의 플라스틱용융액의 온도를 크게 낮출 수 있는 스프루에 관한 것이다.The present invention relates to a sprue for injection, and more particularly to a sprue which can significantly lower the temperature of the plastic melt in the sprue by installing a cooling jacket to increase the cooling efficiency.
플라스틱 재료를 녹여 금형에 주입하여 제품을 만들기 위해서는 제품의 형상을 가지는 다이 및 코어와, 상기 다이에 직접 플라스틱재료를 주입하는 게이트와, 상기 게이트와 런너로 연결되어 플라스틱재료를 안정적으로 공급하는 스프루(sprue, 탕구)가 필요하다.In order to make a product by melting a plastic material and injecting it into a mold, a die and core having a product shape, a gate for directly injecting the plastic material into the die, and a sprue connected to the gate and runner to stably supply the plastic material (sprue)
일반적으로 스프루는 상부다이에 설치되며, 주입노즐로부터 플라스틱용융액을 받기 좋도록 입구측에는 넓은 오리피스가 형성되며, 상기 오리피스와 연계되어 수직탕로가 형성된다.In general, the sprue is installed in the upper die, a wide orifice is formed at the inlet side to receive the plastic melt from the injection nozzle, and a vertical water heater is formed in association with the orifice.
즉, 스프루는 깔때기형상의 공동을 가진 기구이다.In other words, a sprue is a device having a funnel-shaped cavity.
상기에서 수직탕로는 일반적으로 상부가 하부보다 좁게 되어 있어, 하부로 갈수록 플라스틱 용액의 유속을 떨어뜨리고, 주위벽면과의 접촉면적을 넓게 하여 열전달을 크게 한다.In the above, the vertical furnace is generally narrower than the lower part, so that the lower the flow rate of the plastic solution toward the lower part, the larger the contact area with the peripheral wall surface to increase the heat transfer.
또한, 스프루는 적당한 압력을 부여하여 사출품이 치밀한 조직을 가지도록 하는 역할을 한다.In addition, the sprue acts to impart an appropriate pressure so that the injection molded product has a dense structure.
사출품의 완성 후, 사출품과 연결된 게이트와 러너와 스프루 내에서 굳은 플라스틱은 제거되고, 사출품과 연결부위는 연삭하여 깨끗한 표면을 만든다.After completion of the injection molding, the hard plastic is removed from the gates, runners and sprues connected to the injection molding, and the injection molding and the joints are ground to create a clean surface.
그러나, 주입노즐에서 나오는 플라스틱용융액의 주입온도는 300~320℃이고, 사출품이 완전히 응고되는 온도는 80~120℃이다.However, the injection temperature of the plastic melt coming out of the injection nozzle is 300 ~ 320 ℃, the temperature at which the injected product is completely solidified is 80 ~ 120 ℃.
따라서, 스프루는 사출품과 게이트 및 러너를 통해 연결되어 있으므로, 사출품과 온도차이가 크게 발생하게 된다.Therefore, since the sprue is connected to the injection molded product through a gate and a runner, a large temperature difference occurs between the injected product and the injection molded product.
즉, 사출품이 응고가 스프루의 높은 온도로 인해 방해를 받게 되며, 이것이 사출품의 제작시간을 길게하는 결과를 초래한다.That is, solidification of the injection molded product is hindered by the high temperature of the sprue, which results in lengthening the production time of the injection molded product.
따라서, 스프루 하부의 온도를 사출품의 냉각온도까지 낮출 수 있으면 사출품의 제작시간을 단축시킬 수 있어 이에 대한 해결방법이 모색되고 있으나, 현재까지는 스프루가 설치되는 상부다이에 냉각수를 순환시켜 상부다이 자체를 냉각하고 스프루의 열이 상부다이에 전달되도록 하는 방법이 사용되고 있으나, 원하는 정도의 시간당 냉각량을 얻을 수 없다.Therefore, if the temperature of the lower part of the sprue can be lowered to the cooling temperature of the injection part, the production time of the injection part can be shortened. A solution for this problem has been sought. A method of cooling the die itself and allowing the heat of the sprue to be transferred to the upper die is used, but a desired amount of cooling per hour cannot be obtained.
또한, 핫러너라는 탕도가 개발되어 사용되고 있으나, 가격이 너무 고가이어서 대량생산이 아니면 사용이 곤란하다.In addition, hot runners are developed and used, but the price is too expensive to use unless it is mass production.
상기의 문제점을 해결하기 위해 안출된 본 고안의 목적은, 냉각재킷을 설치하여 냉각효율을 높여서 스프루 내의 플라스틱용융액의 온도를 크게 낮출 수 있는 스프루를 제공함에 있다.An object of the present invention devised to solve the above problems is to provide a sprue which can significantly lower the temperature of the plastic melt in the sprue by installing a cooling jacket to increase the cooling efficiency.
도 1은 본 고안의 실시예의 단면도1 is a cross-sectional view of an embodiment of the present invention
도 2는 도 1의 A-A선에서 바라본 평면도2 is a plan view seen from the line A-A of FIG.
도 3은 본 고안의 실시예를 설치한 다이3 is a die in which an embodiment of the present invention is installed
<도면의 주요부분에 대한 부호의 설명><Description of the symbols for the main parts of the drawings>
10: 상부코어 20:하부코어10: upper core 20: lower core
100: 상부다이 101: 스프루장착홀100: upper die 101: sprue mounting hole
110: 냉각수입력관 120: 냉각수출력관110: cooling water input pipe 120: cooling water output pipe
200: 하부다이 210: 이송플레이트200: lower die 210: transfer plate
220: 액추에이터 230: 베이스플레이트220: actuator 230: base plate
240: 엑추에이터 250: 푸싱핀240: Actuator 250: Pushing pin
300: 스프루 310: 스프루상부300: sprue 310: sprue upper portion
311: 냉각수입구 312: 냉각수출구311: cooling water inlet 312: cooling water outlet
313,315: 수직부 314: 원호부313,315 vertical portion 314 circular arc portion
320: 스프루하부 330: 오리피스320: sprue lower portion 330: orifice
340: 탕로 400: 주입노즐340: water flow 400: injection nozzle
상기의 목적을 달성하기 위한 본 고안은, 다이에 설치되어 사용되는 사출용 스프루에 있어서, 탕로주위로 냉각재킷을 설치한 것을 특징으로 하는 사출용 스프루이다.The present invention for achieving the above object is an injection sprue in the injection sprue which is installed and used in the die, characterized in that a cooling jacket is installed around the water heater.
상기 냉각재킷은 상부에 냉각수입구가 형성되고, 상기 냉각수입구와 연결된 유로가 적어도 한번 이상 탕로를 감아돌아서 상부에 형성된 냉각수출구로 연결되는 것을 특징으로 한다.The cooling jacket is characterized in that the cooling inlet is formed in the upper portion, the flow path connected to the cooling inlet is wound at least once or more connected to the cooling outlet formed in the upper portion.
이하, 본 고안을 상세히 설명한다.Hereinafter, the present invention will be described in detail.
본 고안은 스프루에 직접 냉각재킷을 설치하는 것을 주요한 특징으로 한다.The subject innovation is to install the cooling jacket directly on the sprue.
따라서, 당업자에 의해 여러가지 형태의 냉각재킷이 형성될 수 있다.Accordingly, various types of cooling jackets can be formed by those skilled in the art.
냉각수의 입구 및 출구는 상부/상부, 하부/상부, 상부/하부, 하부/하부 등의 여러가지 조합이 있을 수 있으며, 냉각수의 스프로 내부에서의 유로는 열전도 효율을 높이기 위해 탕로를 많이 감을 수록 유리하다.The inlet and outlet of the coolant may have various combinations such as top / top, bottom / top, top / bottom, bottom / bottom, and the like. Do.
따라서, 냉각수의 유로는 간단하게는 하기하는 실시예와 같이 2개의 직선부와 상기 2개의 직선부를 연결하는 원호부로 구성될 수 있고, 좀 더 바람직하게는 나선으로 탕로를 여러번 휘감는 것이다.Therefore, the flow path of the cooling water may simply be composed of two straight portions and an arc portion connecting the two straight portions, as in the following embodiment, and more preferably, the hot water passage is wound several times with a spiral.
전체적인 스프루의 형상은 종래의 것과 유사하고, 냉각수를 공급받고 배출하기 위한 배관을 더 설치하여야 한다.The overall shape of the sprue is similar to the conventional one, and further pipes for supplying and discharging cooling water should be installed.
냉각수의 온도 및 유량은 스프루의 온도강하속도(℃/sec)에 따라 결정되어 지며, 이를 위한 냉각수순환시스템(도시생략)이 요구된다.The temperature and flow rate of the cooling water is determined by the temperature drop rate (° C./sec) of the sprue, and a cooling water circulation system (not shown) is required for this.
이하, 본 고안의 실시예를 도면을 통하여 상세히 설명한다.Hereinafter, embodiments of the present invention will be described in detail with reference to the drawings.
도 1은 본 고안의 실시예의 단면도이고, 도 2는 도 1중 A-A부분의 단면도이다.1 is a cross-sectional view of an embodiment of the present invention, Figure 2 is a cross-sectional view of the A-A portion in FIG.
상단부에는 주입노즐(400)로부터 플라스틱용융액을 받아들이는 오리피스(330)가 형성되고, 상기 오리피스(330)와 연결되어 탕로가 수직방향으로 형성된다.An orifice 330 is formed at the upper end to receive the plastic melt from the injection nozzle 400. The orifice 330 is connected to the orifice 330 in a vertical direction.
즉, 상기 오리피스(330)와 탕로(340)는 깔때기 모양으로 연결된다.That is, the orifice 330 and the runway 340 are connected in a funnel shape.
다음으로, 냉각재킷은 냉각수입구(311)와 냉각수출구(312)와 2개의 수직부(313,315)와 1개의 수평인 원호부(315)로 구성된다.Next, the cooling jacket is composed of a cooling water inlet 311, a cooling water outlet 312, two vertical portions (313, 315) and one horizontal arc portion 315.
냉각수입구(311) 및 냉각수출구(312)는 스프루상부(310)의 상부측면에 형성된다.Cooling water inlet 311 and the cooling water outlet 312 is formed on the upper side surface of the sprue upper portion (310).
상기 냉각수입구(311) 및 냉각수출구(312) 각각에 연결되는 수직부(313,315)는 대략적으로 스프루(300) 전체 길이의 1/2이상의 길이를 갖는다.The vertical portions 313 and 315 connected to the cooling inlet 311 and the cooling outlet 312 respectively have a length of about 1/2 or more of the entire length of the sprue 300.
상기 수직부(313,315)의 길이가 길어질수록 냉각수의 접촉면적이 커져서 냉각효율은 좋아진다.As the lengths of the vertical portions 313 and 315 become longer, the contact area of the cooling water becomes larger, thereby improving cooling efficiency.
원호부(3154)는 상기 2개의 수직부(313,315)를 연결하는 것으로, 탕로(340)주위를 감싸고 돌도록 한다.The circular arc portion 3154 connects the two vertical portions 313 and 315 to surround and surround the water supply passage 340.
상기와 같은 수직부(313,315)와 원호부(314)를 하나의 주물 또는 절삭가공하는 것이 곤란하므로, 도 1과 같이 A-A단면으로 쪼개어, 스프루상부(310)와 하부스프루(320)로 나누어 가공 후 결합하는 것이 바람직하다.Since it is difficult to cast or cut the vertical portions 313 and 315 and the arc portion 314 as described above, it is divided into AA sections as shown in FIG. 1 and divided into a sprue upper portion 310 and a lower sprue 320. It is preferable to combine after processing.
상기와 같은 스프루(300)를 도 3과 같이 상부다이(100)의 스프루장착홀(101)에 장착하고, 냉각수를 공급 및 배출하기 위한 냉각수입력관(110)과 냉각수출력관(111)을 설치한다.The sprue 300 as described above is mounted on the sprue mounting hole 101 of the upper die 100 as shown in FIG. 3, and the coolant input pipe 110 and the coolant output pipe 111 for supplying and discharging the coolant. Install.
그리고, 상기 스프루(300)의 오리피스(330) 위로 주입노즐(400)을 설치하고, 사출작업을 실시하면 된다.Then, the injection nozzle 400 is installed on the orifice 330 of the sprue 300, and the injection operation may be performed.
본 고안처럼 상부다이(100) 쪽으로 플라스틱용융액이 주입되므로, 상부다이(100)는 고정이고, 하부다이(200)는 동작하는 경우에 적용하는 것이 바람직하다.Since the plastic melt is injected toward the upper die 100 as in the present invention, the upper die 100 is fixed, and the lower die 200 is preferably applied when operating.
하부다이(200)의 동작은 하부다이(200)가 놓여져 있는 이송플레이트(210)를 엑추에이터(220)가 상하운동시켜 이루어진다.The operation of the lower die 200 is performed by the actuator 220 vertically moving the transfer plate 210 on which the lower die 200 is placed.
하부다이(200)가 하사점에서 상사점까지 위로 이송되어, 상부코어(10)와 하부코어(20)가 맞닿아 제품의 공동이 형성되면, 상기 공동으로 플라스틱용융액이 스프루(300) 및 러너(도시생략), 게이트(도시생략)를 통해 주입된다.When the lower die 200 is transferred from the bottom dead center to the top dead center, and the upper core 10 and the lower core 20 come into contact with each other to form a cavity of the product, the plastic melt is sprue 300 and the runner. (Not shown) and injection through a gate (not shown).
그리고, 수초 후 제품이 완성되면, 하부다이(200)가 하사점까지 아래로 이송되고, 푸싱핀(250)으로 사출품을 하부 코어(20)로부터 제거한다.When the product is completed after a few seconds, the lower die 200 is transferred to the bottom dead center, and the injection product is removed from the lower core 20 by the pushing pin 250.
상기 푸싱핀(250)은 엑추에이터(240)와 연결되어, 하부다이(200)의 푸싱핀홀(201)을 통해 왕복운동한다.The pushing pin 250 is connected to the actuator 240 and reciprocates through the pushing pin hole 201 of the lower die 200.
상기 엑추에이터(220,240)는 베이스플레이트(230)에 장착된다.The actuators 220 and 240 are mounted to the base plate 230.
본 고안을 통해 스프루에 냉각재킷을 설치하여 냉각효율을 높여서 스프루 내의 플라스틱용융액의 온도를 크게 낮추어, 사출품의 응고속도를 높일 수 있어 제품 한개를 생산하는 데 소요되는 시간을 줄일 수 있어서, 시간경제상 바람직하다.Through the present invention, the cooling jacket is installed on the sprue to increase the cooling efficiency, thereby greatly lowering the temperature of the plastic melt in the sprue, thereby increasing the solidification speed of the injection molded product, and thus reducing the time required to produce one product. Preferred in terms of time economy.
또한, 본 고안은 제작이 용이하여 저렴한 비용으로 생산라인에 투입할 수 있으므로, 생산비용면에서도 경제적이다.In addition, the present invention is easy to manufacture and can be introduced into the production line at a low cost, it is economical in terms of production costs.
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| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| KR20-2004-0023497U KR200367193Y1 (en) | 2004-08-17 | 2004-08-17 | Ejaculation-sprue installing cool-jacket |
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| Application Number | Priority Date | Filing Date | Title |
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| KR20-2004-0023497U KR200367193Y1 (en) | 2004-08-17 | 2004-08-17 | Ejaculation-sprue installing cool-jacket |
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| KR200367193Y1 true KR200367193Y1 (en) | 2004-11-09 |
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Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| KR20190005266A (en) * | 2017-07-05 | 2019-01-16 | 한국단자공업 주식회사 | Cooling structure of mold |
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2004
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Cited By (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| KR20190005266A (en) * | 2017-07-05 | 2019-01-16 | 한국단자공업 주식회사 | Cooling structure of mold |
| KR102316223B1 (en) * | 2017-07-05 | 2021-10-26 | 한국단자공업 주식회사 | Cooling structure of mold |
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