KR100761529B1 - Injection molding apparatus - Google Patents

Injection molding apparatus Download PDF

Info

Publication number
KR100761529B1
KR100761529B1 KR1020060027830A KR20060027830A KR100761529B1 KR 100761529 B1 KR100761529 B1 KR 100761529B1 KR 1020060027830 A KR1020060027830 A KR 1020060027830A KR 20060027830 A KR20060027830 A KR 20060027830A KR 100761529 B1 KR100761529 B1 KR 100761529B1
Authority
KR
South Korea
Prior art keywords
mold
nozzle
gate
injection molding
prevent
Prior art date
Application number
KR1020060027830A
Other languages
Korean (ko)
Inventor
김관표
Original Assignee
김관표
Priority date (The priority date is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the date listed.)
Filing date
Publication date
Application filed by 김관표 filed Critical 김관표
Priority to KR1020060027830A priority Critical patent/KR100761529B1/en
Application granted granted Critical
Publication of KR100761529B1 publication Critical patent/KR100761529B1/en

Links

Images

Classifications

    • 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
    • B29C45/74—Heating or cooling of the injection unit
    • 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
    • B29C45/2708—Gates
    • 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

An injection molding apparatus is provided to prevent a damage of a cavity core caused due to heat generated from a nozzle, and eliminate an O-ring for prevent leakage of a coolant through the gap formed between a gate bush and the cavity core. An injection molding apparatus includes a mold(310), a nozzle unit, a gate bush(330), and a cooling pipe(340). The mold has a molding space in which molten resin injected through a gate(311a) is molded. The nozzle unit includes a nozzle(322) for injecting molten resin toward the gate of the mold. The gate bush is interposed between the nozzle and the mold so as to prevent heat transferred from the nozzle unit from being transferred to the mold. The cooling pipe is interposed between the gate bush and the mold so as to prevent the temperature of the mold from rising.

Description

사출성형장치{INJECTION MOLDING APPARATUS}Injection Molding Equipment {INJECTION MOLDING APPARATUS}

도1은 종래의 사출성형기에 관한 개략적인 단면도.1 is a schematic cross-sectional view of a conventional injection molding machine.

도2는 종래의 다른 사출성형기에 관한 개략적인 단면도.Figure 2 is a schematic cross-sectional view of another conventional injection molding machine.

도3은 본 발명의 실시예에 따른 사출성형장치에 관한 개략적인 단면도.Figure 3 is a schematic cross-sectional view of an injection molding apparatus according to an embodiment of the present invention.

도4는 본 발명의 실시예에 따른 사출성형장치에 채용된 냉각관을 나타낸 도면.Figure 4 is a view showing a cooling tube employed in the injection molding apparatus according to the embodiment of the present invention.

<도면의 주요 부분에 대한 부호의 설명><Explanation of symbols for main parts of the drawings>

310:금형 111,211,311:캐비티코어310: mold 111,211,311: cavity core

311a:게이트 112,212,312:코어311a: gates 112,212,312core

321:매니폴드 321a:수지유로321: Manifold 321a: Resin Euro

321b:제1노즐핀통과홀 122,222,322:노즐321b: First nozzle pin through hole 122,222,322: Nozzle

323:노즐핀 324:피스톤323: Nozzle pin 324: Piston

130,230,330:게이트부시130,230,330: Gate Bush

330b:제3노즐핀통과홀330b: Three nozzle pin through hole

240:오링 340:냉각관240: O-ring 340: Cooling pipe

341:입수구 342:배수구341: inlet 342: drain

본 발명은 사출성형장치에 관한 것으로, 더욱 구체적으로는, 노즐에서 발생하는 열이 사출물에 직접 전달되는 것을 방지하는 기술에 관한 것이다.TECHNICAL FIELD The present invention relates to an injection molding apparatus, and more particularly, to a technology for preventing heat generated from a nozzle from being directly transmitted to an injection product.

종래의 사출성형기는 캐비티코어(Cavity Core)와 코어가 접하면서 생기는 공간에, 캐비티코어의 게이트를 통해 노즐에서 분사되는 용융수지를 주입하여 제품을 제작하는 장치이다. 그런데, 용융수지가 노즐을 통과하는 동안 굳는 것을 방지하기 위해, 노즐 내부에는 히터가 구비되어 열을 발생하게 되는데, 노즐에서 발생하는 열이 캐비티코어를 통해 전도되어 사출물에까지 이르게 되면, 이른바 '열마크'라고 하는 제조상의 오점을 남길 수가 있게 된다. 또한, 노즐의 열로 인해 캐비티코어 자체도 손상을 입을 수 있게 되며, 이때에는 캐비티코어 전체를 교체해야하는 문제점도 있다.Conventional injection molding machine is a device for manufacturing a product by injecting the molten resin injected from the nozzle through the gate of the cavity core in the space created by the cavity core (Cavity Core). However, in order to prevent the molten resin from hardening while passing through the nozzle, a heater is provided inside the nozzle to generate heat. I can leave a manufacturing fault such as'. In addition, the cavity core itself may be damaged by the heat of the nozzle, and there is a problem in that the entire cavity core needs to be replaced.

이러한 문제점을 해결하기 위해, 도1에 도시된 바와 같이, 노즐(122)과 금형(캐비티코어(111), 코어(112)) 사이에 열전도성이 낮은 게이트부시(Gate bush)(130)를 두어, 노즐(122)의 열이 캐비티코어(111)를 통해 사출물에 직접적으로 전달되는 것을 방지하는 기술이 개시된 바 있다. 또한, 게이트부시(130)만으로 열전달을 효과적으로 차단하는 데에는 무리가 있기 때문에, 도2에 도시된 바와 같이, 게이트부시(230)와 금형(캐비티코어(211), 코어(212)) 사이의 공간을 이용해 냉각수를 순환시켜 노즐(222)의 열이 사출물에 전달되는 것을 차단하는 기술이 개시된 바도 있다. 그러나 이러한 구조에서는 냉각수가 게이트부시(230)와 캐비티코 어(211)가 접한 틈새를 통해 누수되는 것을 방지하기 위해 오링(240)이 필수적으로 사용되어야 하는 단점이 있으며, 또한, 노즐(222)의 열이 오링(240)으로 빈번하게 전달됨으로 인해 오링(240)에 손상이 가해질 수 있으며, 그에 따른 오링(240)의 교체 또한 수시로 이루어져야 하는 문제점이 있다.To solve this problem, as shown in FIG. 1, a low thermal conductivity gate bush 130 is provided between the nozzle 122 and the mold (cavity core 111 and core 112). The technique for preventing the heat of the nozzle 122 from being transferred directly to the injection through the cavity core 111 has been disclosed. In addition, since it is difficult to effectively block heat transfer with only the gate bush 130, as shown in FIG. 2, a space between the gate bush 230 and the mold (cavity core 211 and core 212) is formed. There has also been disclosed a technique of circulating the coolant to prevent the heat of the nozzle 222 from being transferred to the injection molding. However, in such a structure, the O-ring 240 must be used to prevent the coolant from leaking through the gap between the gate bush 230 and the cavity core 211. In addition, the nozzle 222 has a disadvantage. Since the heat is frequently transferred to the O-ring 240 may damage the O-ring 240, there is a problem that the replacement of the O-ring 240 must be made from time to time.

본 발명은 상술한 바와 같은 문제점을 해결하기 위하여 안출된 것으로, 오링을 제거하면서도, 냉각수를 순환시켜, 노즐에서 발생하는 열이 사출물에 직접 전달되는 것을 방지하는 사출성형장치를 제공하는데 그 목적이 있다.SUMMARY OF THE INVENTION The present invention has been made to solve the above-described problems, and an object thereof is to provide an injection molding apparatus which removes an O-ring and circulates cooling water, thereby preventing heat generated from a nozzle from being transferred directly to the injection. .

상기 목적을 달성하기 위한 본 발명에 따른 사출성형장치는, 게이트를 통하여 주입되는 용융수지가 성형되는 성형공간을 가지는 금형; 상기 금형의 게이트를 향하여 용융수지를 분사시키는 노즐을 포함하는 노즐장치; 상기 금형의 게이트 주변으로 상기 노즐과 금형 사이에 마련되는 게이트부시; 상기 금형의 온도상승을 방지하기 위해 상기 게이트부시와 상기 금형 사이에 마련되는 냉각관;을 포함한다.Injection molding apparatus according to the present invention for achieving the above object, a mold having a molding space in which the molten resin is injected through the gate; A nozzle device including a nozzle for injecting molten resin toward the gate of the mold; A gate bush disposed between the nozzle and the mold around a gate of the mold; And a cooling tube provided between the gate bush and the mold to prevent a temperature increase of the mold.

여기서, 상기 냉각관은, 상기 금형측으로 밀착하여 배치되는 것이 바람직하다.Here, it is preferable that the said cooling pipe is arrange | positioned in close contact with the said mold side.

이하에서는 상술한 본 발명에 대하여 보다 구체적으로 이해할 수 있도록 바람직한 실시예를 들어 설명한다.Hereinafter, preferred embodiments will be described so that the present invention described above can be understood in more detail.

도3은 본 발명의 실시예에 따른 사출성형장치에 관한 개략적인 단면도이다. 도3에 도시된 바와 같이 본 발명에 따른 사출성형장치는 금형(310), 노즐장치, 게이트부시(330) 및 냉각관(340)을 포함한다.3 is a schematic cross-sectional view of an injection molding apparatus according to an embodiment of the present invention. As shown in FIG. 3, the injection molding apparatus according to the present invention includes a mold 310, a nozzle device, a gate bush 330, and a cooling tube 340.

금형(310)은 게이트(311a)를 통하여 주입되는 용융수지가 성형되는 성형공간을 가진다. 또한 금형(310)은 도3에 도시된 바와 같이, 캐비티코어(311)와 코어(312)를 포함하여 구성될 수도 있다. 즉, 캐비티코어(311)와 코어(312)가 접하면서 생기게 되는 성형공간에서 용융수지가 성형되는 것이며, 완성되는 제품에 따라 성형공간의 형상은 다양할 수 있다.The mold 310 has a molding space in which molten resin injected through the gate 311a is molded. Also, as shown in FIG. 3, the mold 310 may include a cavity core 311 and a core 312. That is, the molten resin is molded in the molding space generated while the cavity core 311 and the core 312 are in contact with each other, and the shape of the molding space may vary depending on the finished product.

노즐장치는 금형(310)의 게이트(311a)를 향하여 용융수지를 분사시키는 노즐(322)을 포함한다. 이러한 노즐장치는 용융수지를 주입하기 위하여 다양한 구성으로 제작될 수 있는데, 도3에 도시된 노즐장치는 그 일례가 도시된 것이다. 도3에 도시된 바와 같은 본 발명의 실시예에 따른 사출성형장치에 채용된 노즐장치는, 매니폴드(321), 노즐(322) 및 노즐핀(323)을 포함한다.The nozzle apparatus includes a nozzle 322 for spraying molten resin toward the gate 311a of the mold 310. Such a nozzle apparatus may be manufactured in various configurations for injecting molten resin, and an example of the nozzle apparatus illustrated in FIG. 3 is illustrated. The nozzle apparatus employed in the injection molding apparatus according to the embodiment of the present invention as shown in FIG. 3 includes a manifold 321, a nozzle 322, and a nozzle pin 323.

매니폴드(321)는 용융수지가 이동하는 수지유로(321a)가 형성되어 있고, 제1노즐핀통과홀(321b)이 상하방향으로 형성되어 있다. 또한 용융수지가 수지유로(321a)를 통과하면서 굳는 것을 방지하기 위한 열선(미도시)이 더 포함될 수도 있다.The manifold 321 has a resin flow path 321a through which the molten resin moves, and a first nozzle pin through hole 321b is formed in the vertical direction. In addition, a heating wire (not shown) may be further included to prevent the molten resin from hardening while passing through the resin flow passage 321a.

노즐(322)은 매니폴드(321)의 하측에 배치되고, 제1노즐핀통과홀(321b)에 대응하여 제2노즐핀통과홀(미도시)이 하부의 분사공까지 형성된다. 또한, 노즐(322)은 히터(미도시)를 더 포함하여, 용융수지가 노즐(322)의 제2노즐핀통과홀을 통과하는 동안 굳는 것을 방지한다.The nozzle 322 is disposed below the manifold 321, and a second nozzle pin through hole (not shown) is formed to a lower injection hole corresponding to the first nozzle pin through hole 321 b. In addition, the nozzle 322 further includes a heater (not shown) to prevent the molten resin from hardening while passing through the second nozzle pin through hole of the nozzle 322.

노즐핀(323)은 제1노즐핀통과홀(321b) 및 제2노즐핀통과홀을 왕복운동하여 상기 노즐(322)의 분사공을 개폐한다. 이때, 노즐장치는 외부의 유압을 받아 상하방향으로 왕복운동을 하는 피스톤(324)을 더 포함하여 노즐핀(323)을 작동시킬 수 있다.The nozzle pin 323 reciprocates the first nozzle pin through hole 321b and the second nozzle pin through hole to open and close the injection hole of the nozzle 322. At this time, the nozzle device may further include a piston 324 reciprocating in the vertical direction by receiving the external hydraulic pressure to operate the nozzle pin 323.

게이트부시(330)는, 금형(310)의 게이트(311a) 주변으로 노즐(322)과 금형(310) 사이에 마련된다. 게이트부시(330)는 제3노즐핀통과홀(330b)이 형성되어 있으며, 노즐핀(323)의 상하운동을 안내 지지해준다. 또한 게이트부시(330)는 열전도성이 낮은 재질로 형성되는 것이 바람직하며, 이는 노즐(322)에서 발생하는 열이 금형(310)의 캐비티코어(311)에 직접 전달되는 것을 일차적으로 방지할 수 있다.The gate bush 330 is provided between the nozzle 322 and the mold 310 around the gate 311a of the mold 310. The gate bush 330 is formed with a third nozzle pin through hole 330b and guides and supports the vertical movement of the nozzle pin 323. In addition, the gate bush 330 is preferably formed of a material having low thermal conductivity, which may prevent the heat generated from the nozzle 322 from being directly transmitted to the cavity core 311 of the mold 310. .

냉각관(340)은 금형(310)의 온도상승을 방지하기 위해 게이트부시(330)와 금형(310) 사이에 마련된다. 게이트부시(330)는 제3노즐핀통과홀(330b)을 중심으로 대략 원형상이며, 게이트부시(330)와 금형(310)의 캐비티코어(311) 사이의 소정 공간에 위치하는 냉각관(340) 역시 이에 따라 굴곡 된 형상이다. 물론 게이트부시(330)는 그 단면이 다각형일 수도 있으며, 이에 따라 냉각관(340)의 형상도 바뀔 수 있다.The cooling tube 340 is provided between the gate bush 330 and the mold 310 to prevent the temperature rise of the mold 310. The gate bush 330 has a substantially circular shape with respect to the third nozzle pin through hole 330b and is located in a predetermined space between the gate bush 330 and the cavity core 311 of the mold 310. ) Is also a curved shape accordingly. Of course, the gate bush 330 may have a polygonal cross section, and thus, the shape of the cooling tube 340 may be changed.

도4는 본 발명의 실시예에 따른 냉각관을 설명하기 위한 도면이다. 도4에 도시된 바와 같이, 냉각관(340)은 일측의 입수구(341)를 통해 냉각수가 입수되며, 타측의 배수구(342)를 통해 냉각수가 빠져 나가면서 냉각수의 순환이 일어나며, 이에 따라 노즐(322)에서 발생하는 열이 캐비티코어(311)에 직접 전달 되어 온도가 상승 하는 것을 방지할 수 있는 것이다. 따라서 캐비티코어(311)에 전달된 열이 사출물에 영향을 주어 이른바 '열마크'라 불리는 불량 제조 현상을 미연에 방지할 수 있는 것이다.4 is a view for explaining a cooling tube according to an embodiment of the present invention. As shown in FIG. 4, the cooling pipe 340 receives the cooling water through the inlet 341 of one side, and the circulation of the cooling water occurs while the cooling water exits through the drain hole 342 of the other side. Heat generated in 322 is directly transmitted to the cavity core 311 to prevent the temperature from rising. Therefore, the heat transferred to the cavity core 311 affects the injection molding, thereby preventing a defect manufacturing phenomenon called a “heat mark” in advance.

한편 냉각관(340)을 순환하게 되는 냉각수의 냉기가 캐비티코어(311)에 더욱 효과적으로 전달되어, 캐비티코어(311)의 온도 상승을 최대한 방지할 수 있도록, 냉각관(340)은 게이트부시(330)와 캐비티코어(311) 사이에서 캐비티코어(311)측으로 밀착하여 배치되도록 하는 것이 바람직하다.On the other hand, the cooling tube 340 is the gate bush 330 so that the cool air of the cooling water circulating in the cooling tube 340 is more effectively transmitted to the cavity core 311, thereby preventing the temperature rise of the cavity core 311 as much as possible. ) And the cavity core 311 is preferably in close contact with the cavity core 311 side.

이상과 같이, 본 발명에 대한 구체적인 설명은 첨부된 도면을 참조한 실시예에 의해서 이루어졌지만, 상술한 실시 예는 본 발명의 바람직한 예를 들어 설명하였을 뿐이기 때문에, 본 발명이 상기의 실시 예에만 국한되는 것으로 이해되어져서는 아니 되며, 본 발명의 권리범위는 후술하는 청구범위 및 그 등가개념으로 이해되어져야 할 것이다.As described above, the detailed description of the present invention has been made by the embodiments with reference to the accompanying drawings, but the above-described embodiments have been described by way of example only, and thus the present invention is limited to the above embodiments. It should not be understood that the scope of the present invention is to be understood by the claims and equivalent concepts described below.

이상에서 상세히 설명한 바와 같이 본 발명에 따르면, 누수방지를 위한 오링을 제거하면서도 냉각수를 순환시킬 수 있도록 하여, 노즐의 열이 금형을 통해 사출물에 직접 전달되는 것을 방지할 수 있다. 또한, 노즐의 열 전달로 인한 손상이 없기 때문에, 수시로 교체하는 번거로움 없이 반 영구적으로 사용할 수 있다.According to the present invention as described in detail above, it is possible to circulate the cooling water while removing the O-ring for preventing leakage, it is possible to prevent the heat of the nozzle is directly transmitted to the injection through the mold. In addition, since there is no damage due to the heat transfer of the nozzle, it can be used semi-permanently without the hassle of replacing frequently.

Claims (2)

게이트를 통하여 주입되는 용융수지가 성형되는 성형공간을 가지는 금형;A mold having a molding space in which molten resin injected through the gate is molded; 상기 금형의 게이트를 향하여 용융수지를 분사시키는 노즐을 포함하는 노즐장치;A nozzle device including a nozzle for injecting molten resin toward the gate of the mold; 상기 금형의 게이트 주변으로 상기 노즐과 금형 사이에 마련되어, 상기 노즐장치로부터 상기 금형으로의 열전달을 저해하는 게이트부시;A gate bush provided between the nozzle and the mold around the gate of the mold to inhibit heat transfer from the nozzle device to the mold; 상기 금형의 온도상승을 방지하기 위해 상기 게이트부시와 상기 금형 사이에 마련되는 냉각관;을 포함하는 것을 특징으로 하는 사출성형장치.And a cooling tube provided between the gate bush and the mold to prevent a temperature increase of the mold. 제1항에 있어서,The method of claim 1, 상기 냉각관은, 상기 금형측으로 밀착하여 배치되는 것을 특징으로 하는 사출성형장치.The cooling tube is an injection molding apparatus, characterized in that arranged in close contact with the mold side.
KR1020060027830A 2006-03-28 2006-03-28 Injection molding apparatus KR100761529B1 (en)

Priority Applications (1)

Application Number Priority Date Filing Date Title
KR1020060027830A KR100761529B1 (en) 2006-03-28 2006-03-28 Injection molding apparatus

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
KR1020060027830A KR100761529B1 (en) 2006-03-28 2006-03-28 Injection molding apparatus

Publications (1)

Publication Number Publication Date
KR100761529B1 true KR100761529B1 (en) 2007-10-04

Family

ID=39418633

Family Applications (1)

Application Number Title Priority Date Filing Date
KR1020060027830A KR100761529B1 (en) 2006-03-28 2006-03-28 Injection molding apparatus

Country Status (1)

Country Link
KR (1) KR100761529B1 (en)

Cited By (2)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
KR101845947B1 (en) * 2016-10-13 2018-04-05 주식회사 유도 Gate bush cooling system of hot runner system
CN109641378A (en) * 2016-09-05 2019-04-16 松下知识产权经营株式会社 Without runnerless injection forming device

Citations (1)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
KR19990014028U (en) * 1997-09-30 1999-04-26 전주범 Nozzle Device of Injection Molding Machine

Patent Citations (1)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
KR19990014028U (en) * 1997-09-30 1999-04-26 전주범 Nozzle Device of Injection Molding Machine

Cited By (2)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
CN109641378A (en) * 2016-09-05 2019-04-16 松下知识产权经营株式会社 Without runnerless injection forming device
KR101845947B1 (en) * 2016-10-13 2018-04-05 주식회사 유도 Gate bush cooling system of hot runner system

Similar Documents

Publication Publication Date Title
KR20070056996A (en) Cooling pin cylinder of hot runner system for injection molding machine
KR101953425B1 (en) Gate valve and method of manufacturing gate valve
KR101354185B1 (en) Valve of Hotrunner System
KR101392281B1 (en) Cold runner injection molding cooling device
KR100761529B1 (en) Injection molding apparatus
KR101393070B1 (en) Hot runner system
JP5553206B2 (en) RTM molding method
KR20130073497A (en) An engine devicewith an efficient cooling structure
KR20170141866A (en) Nozzle device of a hot runner injection mold capable of direct temperature controlling
JP2017100434A (en) Air-cooled sprue bush for injection mold
JP2010094937A (en) Side valve gate type hot runner system
KR101136553B1 (en) Single valve system
KR101463858B1 (en) PVC For Injection Molding Machine
KR20090066027A (en) Cooling device for mold assembly
KR101464554B1 (en) Apparatus for controlling the temperature of the mold
KR102280830B1 (en) Double pipe injection core chiller
KR102011004B1 (en) Hotrunner system
KR101475152B1 (en) Nozzle of Injection Molding Machine
KR101845947B1 (en) Gate bush cooling system of hot runner system
JP2019181944A (en) Apparatus for injection molding plastic materials
KR100855934B1 (en) Hot runner system for injection molding machine and thereof method
JP2008238546A (en) Mold and manufacturing method of optical flat plate member
CN108608626A (en) A kind of water cooling mode of injection mold
CN220517441U (en) Hot runner system of mould and mould
KR20190061948A (en) Equipment for cooling mold parts and method for cooling mold parts having the same

Legal Events

Date Code Title Description
A201 Request for examination
E902 Notification of reason for refusal
E701 Decision to grant or registration of patent right
GRNT Written decision to grant
G170 Publication of correction
FPAY Annual fee payment

Payment date: 20100920

Year of fee payment: 4

LAPS Lapse due to unpaid annual fee