KR100633469B1 - Runner forming structure of crb mold - Google Patents

Runner forming structure of crb mold Download PDF

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Publication number
KR100633469B1
KR100633469B1 KR1020050108954A KR20050108954A KR100633469B1 KR 100633469 B1 KR100633469 B1 KR 100633469B1 KR 1020050108954 A KR1020050108954 A KR 1020050108954A KR 20050108954 A KR20050108954 A KR 20050108954A KR 100633469 B1 KR100633469 B1 KR 100633469B1
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KR
South Korea
Prior art keywords
runner
blocks
mold
vertical
block
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KR1020050108954A
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Korean (ko)
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조치호
박창주
설병태
김범섭
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평화산업주식회사
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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
    • B29C45/2756—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
    • B29C45/2701—Details not specific to hot or cold runner channels
    • B29C2045/2717—Reconfigurable runner channels

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

Abstract

Structure for forming a runner of a CRB mold is provided to prevent leakage of injection fluid to increase lifespan of the mold. Structure for forming a runner of a CRB mold includes an upper plate(11), first and second center blocks(23,24) and side blocks(25,26), a pressure block, and a lower plate(22). The upper plate forms a vertical runner. The first and second side blocks forms a vertical hole and a horizontal hole in communication with the vertical runner. The pressure block is installed at a side surface of the second block. The lower plate accommodates the first and second center blocks and side blocks, and the pressure block.

Description

ＣＲＢ 금형의 러너 형성 구조{RUNNER FORMING STRUCTURE OF CRB MOLD}RUNNER FORMING STRUCTURE OF CRB MOLD}

도 1 은 종래의 CRB 금형의 상플레이트(1)와 하플레이트(2)의 구조를 설명하기 위한 도면 1 is a view for explaining the structure of the upper plate 1 and the lower plate 2 of the conventional CRB mold

도 2 는 상하,플레이트(1,2)를 분리한 상태를 도시하는 도면2 is a view showing a state in which the upper and lower plates 1 and 2 are separated.

도 3 은 본 발명에 따른 상,하플레이트(11,22)의 구조를 설명하기 위한 도면3 is a view for explaining the structure of the upper and lower plates 11 and 22 according to the present invention.

도 4 은 본 발명의 하플레이트에 내장되는 각각의 블럭들을 분리하여 본 개략 사시도Figure 4 is a schematic perspective view of each block separated in the lower plate of the present invention

본 발명은 고무 금형에 관한 것으로, 특히, CRB(COLD RUNNER BLOCK) 금형의 런너 구조에 관한 것이다The present invention relates to a rubber mold, and more particularly, to a runner structure of a CRB (COLD RUNNER BLOCK) mold.

CRB 금형은 금형 내부에, 제품 성형부분에 가열장치와 런너 부분에 저온 유지부가 있어, 런너부의 온도를 일정하게 관리하여 런너부 재료가 성형되지 않아 재사용할 수 있는 구조의 금형으로, 런너 로스를 월등히 줄여주고 또한 런너 제거 시간이 절약되며, 캐비티부에 히터가 장치되므로 금형 가열 시간도 단축되는 등의 효과가 있어 원가 절감 및 품질 향상의 효과가 있는 구조이다The CRB mold has a low temperature holding part inside the mold, a heating device and a runner part in the mold, and manages the temperature of the runner part constantly so that the runner material is not molded and can be reused. It also reduces the time to remove the runner, and the heater is installed in the cavity, which shortens the mold heating time, thus reducing the cost and improving the quality.

종래의 CRB 금형은, 도 1 에 예시한 바와 같이, 상부에서 몰드베이스(5)의 캐비티에 고무액이 주입되는 노즐(3)이 위치하고, 그 아래는 러너(7)가 형성된 상,하플레이트(1,2)가 설치되며 이 상,하플레이트는 볼트 등으로 상호 결합 및 해체가 가능하게 이루어진다. 고무액의 통로가 되는 러너(7)는 도 2 에서 보듯이, 상하로 나뉘어 형성되어 있다.In the conventional CRB mold, as illustrated in FIG. 1, a nozzle 3 into which a rubber liquid is injected into a cavity of a mold base 5 is positioned at an upper portion thereof, and an upper and a lower plate on which a runner 7 is formed below. 1,2) is installed, and the upper and lower plates can be mutually combined and dismantled with bolts. As shown in FIG. 2, the runner 7 serving as a passage for the rubber liquid is formed by being divided up and down.

이 경우, 고무 성형 가공시, 상기한 상,하플레이트(1,2,)는 아무리 견고하게 체결되어 있어서 노즐(3)을 통한 고무액이 약 1600kgf/cm2 압력 이상으로 주입되면, 고무액이 플레이트의 틈새(4)로 삐져 나오게 된다. 이 고무액은 일반 플라스틱 사출물 보다 점도가 더 낮기 때문에 그러한 현상이 더 심하다. 그러면 그 삐져 나온 고무는 결국 버의 원인이 되고 심하게 발생하면 2 차적인 처리과정을 거쳐야 하므로 작업상 매우 불편하다.In this case, during the rubber molding process, the upper and lower plates 1 and 2 are firmly fastened so that the rubber liquid is injected when the rubber liquid through the nozzle 3 is injected at about 1600 kgf / cm 2 or more. It will stick out into the gap (4) of the plate. This phenomenon is worse because the rubber liquid has a lower viscosity than ordinary plastic injections. Then, the squeezed rubber eventually becomes the cause of burrs, and if it occurs severely, it needs to undergo a secondary treatment process, which is very inconvenient for work.

참고로, 하분리판(2)의 아래는 코아 등이 내장되어 있는 몰드베이스(5)가 설치된다. 또한 장기간 사용하면, 계속적인 상부의 가압력에 의해 플레이트는 당연히 변형이 오게 되고 액상의 고무 사출액이 번져 나오게 된다. 이때에는 다른 방도 없이 상,하플레이트(1,2)를 교체하여야 한다For reference, a mold base 5 having a core or the like installed below the lower separator 2 is installed. In addition, when used for a long time, the plate is naturally deformed due to the continuous pressing force, and the liquid rubber injection liquid is smeared out. At this time, the upper and lower plates (1, 2) should be replaced without any other method.

본 발명은 상기한 점을 감안하여 발명한 것으로, 장기 사용으로 플레이트에 변형이 오더라도 플레이트를 교체할 필요 없이 보정이 가능하고 또한 고무사출액 이 삐져 나오지 않는 견고한 구조의 고무 성형을 위한 CRB금형을 제공함에 본 발명의 목적이 있다 The present invention has been invented in view of the above-mentioned, CRB mold for the rubber molding of a rigid structure that can be corrected without the need to replace the plate even if the plate is deformed by long-term use and the rubber injection liquid does not stick out It is an object of the present invention to provide

상기한 본 발명의 목적을 달성하기 위한 본 발명의 주요 구성은, 수직런너(12)를 형성한 상플레이트(11)와: 상기한 수직런너(12)와 통하도록 한 가로공(29)과 이와 연속하여 직각으로 이루어지는 수평공(41)과 그리고 수평공(41)과 수직으로 연결되는 수직공(30)을 형성하는 제 1,2 중심블럭(23,24) 및 제1,2측블럭(25,26)과; 상기한 제2측블럭(26)의 측면에 설치되는 가압블럭(27)과; 상기한 제 1,2중심블럭(23,24)과 제1,2측블럭(25,26)과 그리고 가압블럭(27)을 수용하는 하플레이트(22)를 포함하는 것을 특징으로 하며, 상기한 제1,2중심블럭(23,24)과 제 1,2측블럭(25,26)이 접하는 면에는 수직공(30)이 상호 반분되어 형성되는 것을 특징으로 하며, 상기한 가압블럭(27)은 체결구(32)에 의해 체결되며, 체결되었을때, 하플레이트(22)의 수용면(35)과 갭(34)이 형성되게 체결됨과 동시에 하플레이트(22)의 상면(36) 보다 더 높은 높이차(h)가 있도록 체결되는 것을 특징으로 하며, 상기한 높이차(h)는 0.5mm 인 것을 특징으로 한다The main structure of the present invention for achieving the above object of the present invention, the upper plate 11 and the vertical runner 12 is formed: a horizontal hole (29) to communicate with the vertical runner 12 and the same First and second center blocks 23 and 24 and first and second side blocks 25 which form a horizontal hole 41 continuously formed at right angles and a vertical hole 30 vertically connected to the horizontal hole 41. , 26); A pressure block 27 installed at a side of the second side block 26; And a lower plate 22 accommodating the first and second center blocks 23 and 24, the first and second side blocks 25 and 26, and the pressure block 27. In the surface where the first and second center blocks 23 and 24 and the first and second side blocks 25 and 26 are in contact with each other, the vertical holes 30 are formed by being half-divided with each other. Is fastened by the fastener 32, and when fastened, the receiving surface 35 and the gap 34 of the lower plate 22 are fastened to be formed and at the same time higher than the upper surface 36 of the lower plate 22. It is characterized in that the height difference (h) is fastened so that the height difference (h) is characterized in that 0.5mm.

상기한 특징 외의 다른 특징 및 구성에 대하여 이하, 첨부 도면에 의거 추가로 상술한다Other features and configurations other than those described above will be further described below based on the accompanying drawings.

도 3 은 본 발명에 따른 상,하플레이트(11,22)를 도시하는 개략 단면도이다3 is a schematic cross-sectional view showing the upper and lower plates 11 and 22 according to the present invention.

도시한 바와 같이, 상플레이트(11)에는 단지 수직한 통로인 수직러너(12)를 형성한다. 하플레이트(22)에는 제 1,2 중심블럭(23,24)과 제 1,2 측블럭(25,26) 그 리고 가압블럭(27)이 구분되어 수용되게 만든다As shown, the upper plate 11 forms a vertical runner 12 which is only a vertical passage. The lower plate 22 allows the first and second center blocks 23 and 24, the first and second side blocks 25 and 26, and the pressure blocks 27 to be separately accommodated.

제1,2 중심블럭(23,24)은 수직러너(12)와 접하는 통공(28)이 반분되게 형성되며, 가로공(29)과 수직공(30)을 대칭되게 갖는다. 수직공(30)은 반분된다. 수직공(30)의 반은 도 4 에 도시한 바와 같이, 제1,2측블럭(25)에 형성된다. 한쪽 측부에는 가압블럭(27)이 설치되는데 이 가압블럭(27)은 한 측부가 경사면(37)을 이루고 있으며, 체결구(32)로 체결가능하게 되어 있다. 가압블럭(27)은 제2측블럭(26)의 측부에 설치되며 설치되는 하플레이트(22)의 수용면(35)과 약간의 갭(34)이 있도록 설치한다. 가압블럭(27)은 하플레이트(22)의 상면에서 약 0.5 mm 정도의 높이차(h)를 둔다. 이렇게 상하로 높이차와 갭(34)을 주는 이유는, 다음과 같다. 제 1,2중심블럭(23,24) 및 제 1,2측블럭(25,26)들을 전부 삽입한 후, 가압블럭(27)을 넣고 체결구(32)로 체결한 후, 상플레이트(11)을 위에서 체결(상,하플레이트의 체결에 관한 것은 종래와 동일하므로 이 체결에 대한 구체적인 구조는 생략 함)하여 가압할때, 가압블럭(27)이 가압되면 좌측으로 밀어주는 역할을 하도록 하기 위한 것이다.The first and second center blocks 23 and 24 are formed so that the through holes 28 contacting the vertical runners 12 are divided in half, and have the lateral holes 29 and the vertical holes 30 symmetrically. The vertical hole 30 is divided in half. Half of the vertical hole 30 is formed in the first and second side blocks 25, as shown in FIG. One side portion is provided with a pressure block 27, the pressure block 27, one side portion of the inclined surface 37, it is possible to fasten with a fastener (32). The press block 27 is installed on the side of the second side block 26 so that the receiving surface 35 and the slight gap 34 of the lower plate 22 are installed. The pressing block 27 has a height difference h of about 0.5 mm from the upper surface of the lower plate 22. The reason for giving the height difference and the gap 34 in this manner is as follows. After inserting all of the first and second center blocks 23 and 24 and the first and second side blocks 25 and 26, the pressure block 27 is inserted and fastened by the fastener 32, and then the upper plate 11 ) Is pressed from the top (the connection of the upper and lower plates is the same as in the prior art, so the specific structure for the fastening is omitted), and when the pressing block 27 is pressed, it serves to push to the left. will be.

제1,2중심블럭(23,24)에 형성하는 가로공(29)의 좌우 끝 부위에서는 그와 연속하여 개략 직각으로 전개되는 수평공(41)에 도 4 와 같이 형성된다. 여기에서도 제1,2중심블럭(23,24)과 제1,2 측블럭(25) 사이의 수평공(41)은 상호 반분된 형상으로 이루어진다At the left and right end portions of the horizontal holes 29 formed in the first and second center blocks 23 and 24, the horizontal holes 41 are formed in the horizontal holes 41 continuously extending at right angles as shown in FIG. 4. Here too, the horizontal holes 41 between the first and second center blocks 23 and 24 and the first and second side blocks 25 are formed in half of each other.

상기한 각 블럭간의 접촉면은 정밀 면가공을 한 것이므로 그 정밀도가 매우 높다. 따라서 이렇게 정밀 가공된 면을 중심으로 반분된 통공(28) 및 수직공(30)에 대하여 가압블럭(27)이 가압을 하여 주므로 통공(28) 및 수직공(30)이 완벽한 접합되어 여기서 성형 고무액 등이 절대로 누설되지 않는다 Since the contact surface between the blocks described above is subjected to precision face machining, the accuracy is very high. Therefore, the press block 27 presses against the through hole 28 and the vertical hole 30 half-centered on the precisely processed surface, so that the through hole 28 and the vertical hole 30 are perfectly joined to form the molded rubber. Liquid never leaks

이상과 같은 본 발명에 의하면, 장기 사용에 의해 상,하플레이트(11,22) 및 각 불럭들에 어느 정도 변형이 발생하여도 가압블럭(27)에 의한 밀착이 가능하므로 러너에서 발생되는 누설 등을 방지 가능하다.According to the present invention as described above, even if the deformation of the upper and lower plates (11, 22) and each block to some extent due to long-term use can be closely contacted by the pressure block 27, such as leakage generated in the runner It is possible to prevent.

예를들어 약 350 톤 이상의 압력으로 가압하여 성형하는 금형에서는 장기 사용시, 필연적으로 금형이 틀어지는 변형이 오므로 사출액이 삐져 나오는 문제가 생기는데 본 발명은 이러한 문제를 해결하여 금형을 장기간 사용 가능한 장점이 있다For example, in a mold that is pressurized at a pressure of about 350 tons or more, the mold is inevitably deformed when used for a long time, so that the injection liquid is squeezed out, and the present invention solves this problem. have

또한 필요시엔 가압블럭(27)만 별도 가공하여 변형에 대해 보정 할 수도 있다.In addition, if necessary, the pressing block 27 may be separately processed to compensate for deformation.

또한 여러 조각의 블록으로 구분되어 있어 부분적인 손상을 쉽게 발견하고, 즉각적인 보수가 가능하여, 보수유지비가 저렴하게 들고 생산 속도를 높일 수 있다In addition, it is divided into several pieces of blocks so that partial damage can be easily detected and repaired immediately, so maintenance costs are low and production speed can be increased.

Claims (4)

수직런너(12)를 형성한 상플레이트(11)와:The upper plate 11 forming the vertical runner 12 and: 상기한 수직런너(12)와 통하도록 한 가로공(29)과 이와 연속하여 직각으로 이루어지는 수평공(41)과 그리고 수평공(41)과 수직으로 연결되는 수직공(30)을 형성하는 제 1,2 중심블럭(23,24) 및 제1,2측블럭(25,26)과;First to form a horizontal hole 29 to communicate with the vertical runner 12, a horizontal hole 41 made at right angles in succession thereof, and a vertical hole 30 vertically connected to the horizontal hole 41. 2 center blocks 23 and 24 and first and second side blocks 25 and 26; 상기한 제2측블럭(26)의 측면에 설치되는 가압블럭(27)과;A pressure block 27 installed at a side of the second side block 26; 상기한 제 1,2중심블럭(23,24)과 제1,2측블럭(25,26)과 그리고 가압블럭(27)을 수용하는 하플레이트(22)를 포함하는 것을 특징으로 하는 CRB 금형의 러너 형성 구조The first and second center blocks 23 and 24, the first and second side blocks 25 and 26, and the lower plate 22 for receiving the pressurizing block 27 are included. Runner forming structure 제 1 항에 있어서,The method of claim 1, 상기한 제1,2중심블럭(23,24)과 제 1,2측블럭(25,26)이 접하는 면에는 수직공(30)이 상호 반분되어 형성되는 것을 특징으로 하는 CRB 금형의 러너 형성 구조Runner forming structure of the CRB mold, characterized in that the vertical holes 30 are formed in half of each other on the surface where the first and second center blocks 23 and 24 and the first and second side blocks 25 and 26 contact each other. 제 1 항에 있어서,The method of claim 1, 상기한 가압블럭(27)은 체결구(32)에 의해 체결되며, 체결되었을때, 하플레이트(22)의 수용면(35)과 갭(34)이 형성되게 체결됨과 동시에 하플레이트(22)의 상면(36) 보다 더 높은 높이차(h)가 있도록 체결되는 것을 특징으로 하는 CRB 금형의 러너 형성 구조The pressing block 27 is fastened by the fastener 32, and when fastened, the receiving surface 35 and the gap 34 of the lower plate 22 are fastened to form the lower plate 22. Runner forming structure of the CRB mold, characterized in that fastening so that there is a higher height difference (h) than the upper surface (36) 제 3 항에 있어서,The method of claim 3, wherein 상기한 높이차(h)는 0.5mm 인 것을 특징으로 하는 CRB 금형의 러너 형성 구조The height difference h is the runner forming structure of the CRB mold, characterized in that 0.5mm.
KR1020050108954A 2005-11-15 2005-11-15 Runner forming structure of crb mold KR100633469B1 (en)

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Cited By (3)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
CN104249419A (en) * 2014-09-12 2014-12-31 苏州好特斯模具有限公司 Trapezoid pressure-bearing cushion block
KR20220130293A (en) 2021-03-17 2022-09-27 주식회사 디엠씨 Cold runner block system with easy nozzle replacement
KR20230164322A (en) 2022-05-25 2023-12-04 주식회사 디엠씨 Cold runner block system with easy nozzle replacement

Cited By (3)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
CN104249419A (en) * 2014-09-12 2014-12-31 苏州好特斯模具有限公司 Trapezoid pressure-bearing cushion block
KR20220130293A (en) 2021-03-17 2022-09-27 주식회사 디엠씨 Cold runner block system with easy nozzle replacement
KR20230164322A (en) 2022-05-25 2023-12-04 주식회사 디엠씨 Cold runner block system with easy nozzle replacement

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