KR0136498Y1 - Gate automatic cutting device of mold - Google Patents
Gate automatic cutting device of mold Download PDFInfo
- Publication number
- KR0136498Y1 KR0136498Y1 KR2019960035302U KR19960035302U KR0136498Y1 KR 0136498 Y1 KR0136498 Y1 KR 0136498Y1 KR 2019960035302 U KR2019960035302 U KR 2019960035302U KR 19960035302 U KR19960035302 U KR 19960035302U KR 0136498 Y1 KR0136498 Y1 KR 0136498Y1
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- South Korea
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- gate
- mold
- ejector pin
- center
- cavity
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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
- B29C45/38—Cutting-off equipment for sprues or ingates
-
- 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
- B29C45/4005—Ejector constructions; Ejector operating mechanisms
- B29C45/401—Ejector pin constructions or mountings
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- Engineering & Computer Science (AREA)
- Manufacturing & Machinery (AREA)
- Mechanical Engineering (AREA)
- Moulds For Moulding Plastics Or The Like (AREA)
Abstract
게이트가 금형의 형개시에 자동으로 제거되어 후가공이 요구되지 않도록 한 사출물의 게이트 자동절단장치에 대해 개시한다. 이 장치는 상호 결합되어 소정형상의 캐비티를 형성하는 상/하 형판(310)(320)과, 캐비티의 중심을 통해 수지가 공급되는 공급로가 형성된 고정측부착판(200)과, 수지의 중심을 관통하여 기어의 축결합공을 형성시키는 제1이젝터핀(510)과, 축결합공이 형성된 수지를 하형판(320)으로부터 취출시키는 제2이젝터핀(520)을 구비한다. 따라서 게이트의 후가공 처리를 요구하지 않는다.Disclosed is an automatic gate cutting device for an injection molding in which a gate is automatically removed at the time of mold opening so that post processing is not required. The device is connected to each other to form upper and lower die plates 310 and 320 to form a cavity of a predetermined shape, a fixed side attachment plate 200 having a supply path through which the resin is supplied through the center of the cavity, and the center of the resin. The first ejector pin 510 penetrates the through hole to form the shaft coupling hole, and the second ejector pin 520 extracts the resin having the shaft coupling hole from the lower plate 320. Therefore, no post processing of the gate is required.
Description
본 고안은 금형의 게이트 자동절단장치에 관한 것으로, 특히 기어 등의 사출금형작업시 형성되는 게이트를 금형내부에서 자동적으로 절단하여 후가공이 필요없도록 된 금형의 게이트 자동절단장치에 관한 것이다.The present invention relates to a gate automatic cutting device of a mold, and more particularly, to a gate automatic cutting device of a mold that automatically cuts the gate formed during the injection mold operation such as a gear in the mold so that post processing is unnecessary.
일반적으로 사출 금형은 플라스틱 수지를 금형의 캐비티(cavity)에 용입하여 일정시간이 경과한 뒤에 형틀을 개방시켜 고체상태의 수지로 형성시키는 플라스틱 가공법으로서, 플라스틱의 양산에 적합하다.In general, an injection mold is a plastic processing method in which a plastic resin is infused into a cavity of a mold and a mold is opened after a predetermined time has elapsed to form a solid resin, which is suitable for mass production of plastics.
종래의 사출 금형으로 제작한 기어는 도 1에 도시한 바와 같이, 형개시 게이트의 절단자국인 돌기(14a)가 형성된 몸체(14)와, 상기 몸체(14)의 중앙에 샤프트(20)가 끼움결합되는 중공(12)이 형성되는 구조로 되어 있다.As shown in FIG. 1, a gear made of a conventional injection mold includes a body 14 having a protrusion 14a, which is a cutting mark of a mold starting gate, and a shaft 20 fitted into a center of the body 14. The hollow 12 is formed.
상기 몸체(14)의 돌기(14a)는 사출 금형공정시 게이트를 통해 용입된 수지가 형틀의 상, 하 분리작업으로 인해 절단될 때 형성되는 것으로, 타발 또는 절단하는 후가공처리를 거쳐야 하는 번거로운 문제점이 있었다.The protrusion 14a of the body 14 is formed when the resin injected through the gate during the injection mold process is cut due to the upper and lower separation operations of the mold, and the cumbersome problem of undergoing punching or cutting after processing is required. there was.
또한 상기 후가공 처리는 기어(10) 정밀도의 기준인 진원도를 유지할 수 없는 문제점을 갖는다.In addition, the post-processing process has a problem that can not maintain the roundness, which is a standard of the gear 10 precision.
그리고 상기 기어(10)의 특성상 가장 이상적인 게이트 위치는 중앙이지만, 그 중앙에는 샤프트(20)가 끼움결합되는 중공(12)이 형성되는 위치이므로 게이트를 설치할 수 없는 문제점과, 설사 그 위치에 설치하더라도 후가공처리가 까다로운 문제점이 있었다.And the most ideal gate position in the characteristic of the gear 10 is the center, but since the hollow 12 is formed in the center of the shaft 20 is fitted to the problem that the gate can not be installed, even if installed in that position Post-processing has been a difficult problem.
본 고안은 상기한 제반 문제점을 감안하여 이를 해결하고자 창출된 것으로서, 다음과 같은 목적을 갖는다.The present invention was created to solve the above problems in consideration of the above-mentioned problems, and has the following objectives.
첫째, 게이트가 금형 형개시 자동으로 절단되도록 하고 게이트를 다듬질하기 위한 후가공이 요구되지 않는 금형의 게이트 자동 절단장치를 제공한다.First, it provides an automatic gate cutting device for a mold that allows the gate to be automatically cut when the mold is started and does not require post-processing to finish the gate.
둘째, 기어의 진원도를 유지하여 정밀도를 향상시킬 수 있도록 한 금형의 게이트 자동절단장치를 제공한다.Second, it provides a gate automatic cutting device of a mold to improve the precision by maintaining the roundness of the gear.
도 1은 일반적인 사출금형으로 제작한 기어를 나타낸 도면,1 is a view showing a gear made of a common injection mold,
도 2는 본 고안에 따른 금형의 게이트 자동절단장치를 도시한 단면도,2 is a cross-sectional view showing a gate automatic cutting device of a mold according to the present invention,
도 3은 본 고안의 형틀이 형개되는 상태를 도시한 단면도,3 is a cross-sectional view showing a state in which the mold of the present invention is opened;
도 4는 본 고안의 제 1이젝터 핀에 의해 게이트가 절단되는 상태를 도시한 것이고,4 illustrates a state in which the gate is cut by the first ejector pin of the present invention,
도 5는 본 고안의 제 2이젝터 핀에 의해 기어가 분리되는 상태를 보인 작동상태도이다.5 is an operating state diagram showing a state in which the gear is separated by the second ejector pin of the present invention.
도면의 주요부분에 대한 부호의 설명Explanation of symbols for main parts of the drawings
100 : 게이트200 : 고정측 부착판100: gate 200: fixed side mounting plate
310, 320 : 상, 하 형판400 : 기어310, 320: upper and lower template 400: gear
510 : 제 1이젝터 핀520 : 제 2이젝터 핀510: first ejector pin 520: second ejector pin
610, 620 : 상, 하 이젝터 플레이트610, 620: upper and lower ejector plates
700 : 가동측 부착판700: movable side attachment plate
상기한 목적을 달성하기 위한 본 고안은 중심부에 축 결합공이 형성된 기어의 사출금형에 있어서, 상호 결합되어 기어 사출물에 대응되는 형상의 캐비티를 형성하는 상/하 형판과, 상기 캐비티의 중심을 통해 수지가 공급되는 공급로가 형성된 고정측부착판과, 상기 캐비티의 중심을 관통하여 상기 축결합공에 대응하는 사출물의 일부를 취출시키는 제1이젝터핀과, 상기 축결합공이 형성된 사출물을 하형판으로부터 취출시키는 제2이젝터핀을 포함하여 된 것을 특징으로 한다.The present invention for achieving the above object in the injection mold of the gear is formed in the shaft coupling hole in the center, the upper and lower dies to form a cavity of the shape corresponding to the gear injection, and the resin through the center of the cavity A fixed side attachment plate having a supply path to which is supplied is supplied, a first ejector pin penetrating a center of the cavity to take out a part of the injection material corresponding to the axial engagement hole, and an injection molded product having the axial engagement hole formed therein; It characterized in that it comprises a second ejector pin.
이하 본 고안의 바람직한 일 실시예를 첨부되는 도면을 참조하여 설명하기로 한다.Hereinafter, a preferred embodiment of the present invention will be described with reference to the accompanying drawings.
본 고안에 따른 금형의 게이트 자동절단장치가 채용된 기어의 사출금형을 단면도로 나타낸 도 2를 참조하면, 이는 플라스틱 수지가 용입되는 스프루부쉬가 마련되는 고정측 부착판(200)과, 상기 고정측 부착판(200)의 하측에 상호 결합되어 소정형상의 캐비티(cavity)를 형성하는 상, 하 형판(310, 320)과, 상기 상, 하 형판(310, 320)에 의해 일정한 형상으로 성형된 기어(400)의 중앙 하측에 설치되어 게이트(100)를 타발하는 제 1이젝터 핀(510)과, 상기 제 1이젝터 핀(510)과 연설되고 상, 하로 승강되는 상, 하 이젝터 플레이트(610, 620)와, 상기 상, 하 이젝터 플레이트(610, 620)의 내부에 축설되어 상기 기어(400)를 이탈시키는 제 2이젝터 핀(520)과, 상기 상, 하 형판(310, 320)을 형개하는 가동측 부착판(700)을 구비한다. 한편, 상기 기어는 통상 축이 결합되는 결합공을 가진다.Referring to Figure 2 showing the injection mold of the gear employing the automatic gate cutting device of the mold according to the present invention, which is a fixed side attachment plate 200 is provided with a sprue bush in which plastic resin is injected, and the fixed The upper and lower die plates 310 and 320 coupled to the lower side of the side attachment plate 200 to form a cavity of a predetermined shape, and the upper and lower die plates 310 and 320 are formed into a predetermined shape. A first ejector pin 510 installed below the center of the gear 400 to punch the gate 100, and an upper and lower ejector plate 610 that is lifted up and down by being extended with the first ejector pin 510. 620, a second ejector pin 520 arranged in the upper and lower ejector plates 610 and 620 to separate the gear 400, and the upper and lower templates 310 and 320. A movable side attachment plate 700 is provided. On the other hand, the gear usually has a coupling hole to which the shaft is coupled.
더욱 상세하게 설명하면, 상기 상, 하 형판(310, 320)은 상기 플라스틱 수지가 일정한 시간을 거쳐 경화되고 난 후에 상, 하로 형개(型開)되도록 분리되어 있다.In more detail, the upper and lower mold plates 310 and 320 are separated to be opened up and down after the plastic resin is cured through a predetermined time.
상기 제 1이젝터 핀(510)은 상기 기어의 결합공부분에 형성되는 상기 게이트(100)를 타발하도록 상, 하 형판(310, 320)이 형개된 후에 실린더(미도시)에 의해 승강하는 상, 하 이젝터 플레이트(610, 620)와 연결되는 구조로 되어 있다.The first ejector pins 510 are lifted up and down by cylinders (not shown) after the upper and lower plates 310 and 320 are opened to punch the gate 100 formed in the coupling hole of the gear. It is configured to be connected to the ejector plate (610, 620).
상기 제 2이젝터 핀(520)은 제 1이젝터 핀(510)이 동작된 후에 순차적으로 동작되도록 상기 제 1이젝터 핀(510)과 소정 거리로 평행하게 설치되며 상기 상, 하 이젝터 플레이트(610, 620)의 내부에 형성된 공간부(A)에 축설되는 구조로 되어 있다.The second ejector pin 520 is installed in parallel with the first ejector pin 510 at a predetermined distance so that the second ejector pin 520 is sequentially operated after the first ejector pin 510 is operated, and the upper and lower ejector plates 610 and 620. It has a structure which is built up in the space A formed in the inside.
즉 상기 제 2이젝터 핀(520)은 공간부(A)의 행정 길이에 따라 상기 상, 하 이젝터 플레이트(610, 620)와 함께 상승하는 시간이 제 1이젝터 핀(510)과는 소정의 차이를 갖게 된다.That is, the second ejector pin 520 has a predetermined difference from the first ejector pin 510 when the time when the second ejector pin 520 rises together with the upper and lower ejector plates 610 and 620 according to the stroke length of the space A. Will have
이하 본 고안의 작동과정을 설명하기로 한다.Hereinafter will be described the operation of the present invention.
도 3 내지 도 5참조, 먼저 가열된 액체상태의 플라스틱 수지를 금형 내부에 용입하여 냉각되도록 하여 경화시킨다.3 to 5, first, the heated plastic resin is poured into the mold and cooled to harden.
일정시간이 경과된 후에 가동측 부착판(700)의 이동으로 상, 하 형판(310, 320)이 형개되면, 상기 경화된 수지제품인 기어(400)는 하측 형판(320)에 밀착된 채로 있게 된다.When the upper and lower die plates 310 and 320 are opened by the movement of the movable side attachment plate 700 after a predetermined time has elapsed, the hardened resin product gear 400 remains in close contact with the lower die 320. .
이 후에 상, 하 이젝터 플레이트(610, 620)가 상승하면, 이에 연동되는 제 1이젝터 핀(510)이 함께 상승하여 상기 기어의 결합공부분을 관통시켜서 상기 게이트(100)를 타발한다.Afterwards, when the upper and high ejector plates 610 and 620 rise, the first ejector pins 510 interlocked with each other rise to penetrate the coupling hole of the gear to punch the gate 100.
이후 제 2이젝터 핀(520)이 상, 하 이젝터 플레이트(610, 620)에 의해 제 1이젝터 핀(510)의 타발동작이 완료된 후에 상승하여 기어(400)를 하측 형판(320)으로부터 이젝팅시킨다.Thereafter, the second ejector pin 520 is raised after the punching operation of the first ejector pin 510 is completed by the upper and lower ejector plates 610 and 620 to eject the gear 400 from the lower template 320. .
따라서, 본 고안은 금형의 형개시에 기어의 결합공부분에 함께 형성되는 게이트(100)를 분리시킴으로써, 게이트를 다듬질하기 위한 후가공이 필요없게 된다.Therefore, the present invention separates the gate 100 formed together at the coupling hole portion of the gear at the start of mold, thereby eliminating the need for post processing to trim the gate.
상기한 바와 같이 본 고안은 다음과 같은 유용한 효과를 갖는다.As described above, the present invention has the following useful effects.
첫째, 금형의 형개와 함께 게이트를 절단할 수 있으므로, 후가공 처리가 용이하고 작업시간이 단축되는 효과를 갖는다.First, since the gate can be cut together with the mold opening, the post processing is easy and the working time is shortened.
둘째, 기어의 중앙에 게이트를 설치할 수 있으므로, 기어의 진원도를 유지하여 정밀도를 향상시키는 효과를 갖는다.Second, since the gate can be installed in the center of the gear, it has the effect of maintaining the roundness of the gear to improve the precision.
이상과 같이 설명한 본 고안은 앞서 기술한 일 실시예에만 한정되는 것이 아니라, 본 고안의 기술적 사상의 범주에 해당되는 그외 변형된 다른 실시예도 포함되는 것이 당연하다.As described above, the present invention is not limited to the above-described embodiment, and it is natural that other modified embodiments included in the scope of the technical idea of the present invention are included.
Claims (1)
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| KR2019960035302U KR0136498Y1 (en) | 1996-10-24 | 1996-10-24 | Gate automatic cutting device of mold |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| KR2019960035302U KR0136498Y1 (en) | 1996-10-24 | 1996-10-24 | Gate automatic cutting device of mold |
Publications (2)
| Publication Number | Publication Date |
|---|---|
| KR19980021974U KR19980021974U (en) | 1998-07-15 |
| KR0136498Y1 true KR0136498Y1 (en) | 1999-05-15 |
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| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| KR2019960035302U Expired - Fee Related KR0136498Y1 (en) | 1996-10-24 | 1996-10-24 | Gate automatic cutting device of mold |
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| KR (1) | KR0136498Y1 (en) |
Families Citing this family (4)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN107877796A (en) * | 2017-12-05 | 2018-04-06 | 镒生电线塑料(昆山)有限公司 | A kind of mould of surface trimming cast gate |
| KR102380445B1 (en) | 2020-09-29 | 2022-03-31 | (주)엔케이 | Injection molded product gate cutting device for automobile interior materials |
| KR20220169139A (en) | 2021-06-18 | 2022-12-27 | 에스엘 주식회사 | Molding Apparatus and operation method for the same |
| KR20230013434A (en) | 2021-07-19 | 2023-01-26 | 최용문 | Container injection mold without runner |
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1996
- 1996-10-24 KR KR2019960035302U patent/KR0136498Y1/en not_active Expired - Fee Related
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| KR19980021974U (en) | 1998-07-15 |
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