KR100244394B1 - Engine pot forming method and core - Google Patents

Engine pot forming method and core Download PDF

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Publication number
KR100244394B1
KR100244394B1 KR1019970033695A KR19970033695A KR100244394B1 KR 100244394 B1 KR100244394 B1 KR 100244394B1 KR 1019970033695 A KR1019970033695 A KR 1019970033695A KR 19970033695 A KR19970033695 A KR 19970033695A KR 100244394 B1 KR100244394 B1 KR 100244394B1
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KR
South Korea
Prior art keywords
core
intake port
cylinder head
protrusions
partition member
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KR1019970033695A
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Korean (ko)
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KR19990010819A (en
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이용균
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류정열
기아자동차주식회사
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Priority to KR1019970033695A priority Critical patent/KR100244394B1/en
Publication of KR19990010819A publication Critical patent/KR19990010819A/en
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    • B—PERFORMING OPERATIONS; TRANSPORTING
    • B22—CASTING; POWDER METALLURGY
    • B22D—CASTING OF METALS; CASTING OF OTHER SUBSTANCES BY THE SAME PROCESSES OR DEVICES
    • B22D15/00—Casting using a mould or core of which a part significant to the process is of high thermal conductivity, e.g. chill casting; Moulds or accessories specially adapted therefor
    • B22D15/02—Casting using a mould or core of which a part significant to the process is of high thermal conductivity, e.g. chill casting; Moulds or accessories specially adapted therefor of cylinders, pistons, bearing shells or like thin-walled objects
    • B—PERFORMING OPERATIONS; TRANSPORTING
    • B22—CASTING; POWDER METALLURGY
    • B22C—FOUNDRY MOULDING
    • B22C9/00—Moulds or cores; Moulding processes
    • B22C9/10—Cores; Manufacture or installation of cores
    • F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
    • F02—COMBUSTION ENGINES; HOT-GAS OR COMBUSTION-PRODUCT ENGINE PLANTS
    • F02F—CYLINDERS, PISTONS OR CASINGS, FOR COMBUSTION ENGINES; ARRANGEMENTS OF SEALINGS IN COMBUSTION ENGINES
    • F02F1/00—Cylinders; Cylinder heads 
    • F02F1/24—Cylinder heads

Abstract

본 발명은 통상 연소실과 이중의 흡기포트가 연통되게 형성되는 기관의 실린더헤드를 주조에 의해 제조하는 것에 있어서, 외곽부에 돌기(51)들이 돌출되는 박판의 격벽부재(50)가 코어(20)의 상부코어(30)와 하부코어(40) 사이에서 상기 돌기들이 외부로 돌출되게 결합되도록 하여, 상기 코어가 상기 실린더헤드 제조용 금형의 흡기포트 부위에 장착된 후 주조되도록 하므로, 상기 코어를 털어낼 때 상기 격벽부재의 돌기들이 상기 실린더헤드의 흡기포트(60) 내벽에 결합되어 이중 흡기포트(60)가 형성되도록 하므로, 코어가 격벽부재를 사이에 두고 일체로 형성되어 제품의 성형 정밀도를 향상시킬 수 있고, 제품의 원가를 저감할 수 있게 되며, 박판의 격벽부재를 사용하여 격벽을 형성하므로 격벽의 두께를 얇게 형성하는 것이 가능하도록 하는 실린더헤드의 흡기포트 성형방법 및 그 코어구조이다.According to the present invention, in the manufacture of a cylinder head of an engine in which a combustion chamber and a double intake port are communicated with each other by casting, a partition plate member 50 of a thin plate having protrusions 51 protruding outward is formed in a core 20. The protrusions are coupled between the upper core 30 and the lower core 40 of the upper core 30 so as to protrude to the outside, so that the cores are mounted on the intake port portion of the mold for manufacturing the cylinder head and then cast. When the protrusions of the partition member are coupled to the inner wall of the intake port 60 of the cylinder head so that the double intake port 60 is formed, the core is integrally formed with the partition member therebetween to improve the molding precision of the product. It is possible to reduce the cost of the product, and to form the partition wall using the partition member of the thin plate cylinder head to make it possible to form a thin thickness of the partition wall The method for forming the inlet ports and that the core structure.

Description

실린더헤드의 흡기포트 성형방법 및 그 코어구조Intake port forming method of cylinder head and core structure

본 발명은 실린더헤드의 흡기포트 성형방법 및 그 코어구조에 관한 것으로, 상부코어와 하부코어를 일체로 형성하여 제품의 성형정밀도를 향상시키고 제품의 원가를 절감할 수 있도록 하는 것이다.The present invention relates to a method for forming an intake port of a cylinder head and a core structure thereof, and to form an upper core and a lower core integrally to improve molding precision of a product and to reduce cost of a product.

일반적으로 실린더헤드의 흡기계는 도 1과 도 3에 도시된 바와 같이, 연소실이 형성되는 실린더헤드(100)의 상부에 상기 연소실에 연통되게 흡기포트(60)가 형성되며, 흡기포트(60) 중간에 격벽(120)이 형성되어 상기 흡기포트(60)가 상부흡기포트(61)와 하부흡기포트(62)로 구성되고, 상기 연소실 상부에 장치되는 흡기밸브(110)가 상부흡기포트(61)와 하부흡기포트(62)에 개폐 가능하도록 되어 있다.In general, as shown in FIGS. 1 and 3, an intake port of the cylinder head has an intake port 60 formed in communication with the combustion chamber on an upper portion of the cylinder head 100 where a combustion chamber is formed, and an intake port 60. A partition wall 120 is formed in the middle so that the intake port 60 includes the upper intake port 61 and the lower intake port 62, and the intake valve 110 installed on the combustion chamber is provided with the upper intake port 61. ) And the lower intake port 62 can be opened and closed.

이와 같이 흡기포트가 이중으로 형성되는 실린더헤드의 흡기포트 제작은 도 2에 도시된 바와 같이, 상부흡기포트와 하부흡기포트의 형상을 갖는 상부코어(140)와 하부코어(150)를 별도로 제작하여, 상부코어(140)와 하부코어(150)가 상기 격벽(120)을 형성하는 소정의 중공부(160)를 사이에 두고 금형(130)에 결합된 후, 용탕을 주입시켜 상부흡기포트와 하부흡기포트 및 격벽주위를 주조에 의해 생산하였다.As described above, as illustrated in FIG. 2, the intake port of the cylinder head having the intake port formed in duplicate may be manufactured by separately manufacturing the upper core 140 and the lower core 150 having the shape of the upper intake port and the lower intake port. After the upper core 140 and the lower core 150 are coupled to the mold 130 with a predetermined hollow portion 160 forming the partition wall 120 interposed therebetween, the upper intake port and the lower portion are injected. Intake ports and bulkheads were produced by casting.

이와 같이 흡기포트가 이중으로 형성되는 종래 실린더헤드의 흡기포트 제작은 상부코어(140)와 하부코어(150)를 별도로 제작해야 하므로 제작원가가 상승되고, 제작상 정밀도가 요구되어 제작이 용이하지 않은 단점이 있었으며, 격벽 성형의 특성상 용탕이 냉각되지 않은 상태로 중공부(160)에 흘러 들어가야 하므로 격벽(120)의 두께를 두껍게 형성해야 하는 단점이 있었다.As described above, the production of the intake port of the conventional cylinder head in which the intake port is formed in a double requires the upper core 140 and the lower core 150 to be manufactured separately, thereby increasing the manufacturing cost and requiring precision in manufacturing. There was a disadvantage, and due to the characteristics of the partition molding, the molten metal has to flow into the hollow portion 160 without cooling, so that the thickness of the partition wall 120 has to be formed thick.

본 발명의 목적은 다중 흡기포트를 성형하기 위한 코어 제작이 용이하고, 제작원가가 저감되도록 하며, 흡기포트의 성형 정밀도를 높임과 동시에 격벽의 두께를 얇게 형성할 수 있도록 하는 실린더헤드의 흡기포트 성형방법 및 코어구조를 제공함에 있다.An object of the present invention is to make the core for molding the multiple intake port, to reduce the manufacturing cost, to increase the molding precision of the intake port and at the same time to form the thickness of the partition wall inlet port molding of the cylinder head A method and a core structure are provided.

제1도는 일반적인 실린더헤드 흡기계의 구성도.1 is a block diagram of a general cylinder head intake machine.

제2도는 일반적인 실린더헤드 흡기포트 성형장치의 구성도.2 is a block diagram of a general cylinder head intake port forming apparatus.

제3도는 제1도의 A-A선 단면도.3 is a cross-sectional view taken along the line A-A of FIG.

제4도는 본 발명 흡기포트 성형장치의 구성도.4 is a configuration diagram of the intake port forming apparatus of the present invention.

제5도는 본 발명 흡기포트 성형장치의 평면도.5 is a plan view of the intake port forming apparatus of the present invention.

제6도는 본 발명 흡기포트 성형금형의 구성도.6 is a configuration diagram of the intake port molding mold of the present invention.

제7도는 본 발명 흡기포트의 구성 단면도.7 is a cross-sectional view of the intake port of the present invention.

제8도는 제7도의 B-B선 단면도.8 is a cross-sectional view taken along the line B-B in FIG.

제9도는 본 발명 흡기포트 성형장치의 다른 실시예를 나타내는 구성도.9 is a configuration diagram showing another embodiment of the intake port forming apparatus of the present invention.

〈도면의 주요부분에 대한 부호의 설명〉<Explanation of symbols for main parts of drawing>

10 : 금형 20 : 코어10: mold 20: core

30 : 상부코어 40 : 하부코어30: upper core 40: lower core

50 : 격벽부재 51 : 돌기50: partition member 51: protrusion

52 : 결합공 60 : 흡기포트52: coupling hole 60: intake port

본 발명은 실린더헤드의 흡기포트를 위해 실린더헤드 주조용 금형에 장착되는 흡기포트용 코어의 상부코어와 하부코어가 종방향 중간부 전체에 알루미늄 재질의 격벽부재가 삽입되도록 하여 일체로 형성되고, 상기 격벽의 외곽둘레에 사각형상의 돌기들이 돌출되게 형성되고, 상기 격벽부재에 상기 상부코어와 하부코어에 결합되도록 하는 결합공들이 다수 형성되는 것을 그 기술적 기본 특징으로 한다.The present invention is formed integrally so that the upper and lower cores of the intake port core mounted on the mold for casting the cylinder head for the intake port of the cylinder head are inserted into the bulkhead member of the aluminum material in the entire longitudinal middle portion. The technical features of the technical features that the rectangular protrusions are formed to protrude from the outer periphery of the partition wall, a plurality of coupling holes are formed in the partition member to be coupled to the upper core and the lower core.

이하 도면을 참조하여 본 발명의 바람직한 실시예를 설명하면 다음과 같다.Hereinafter, exemplary embodiments of the present invention will be described with reference to the accompanying drawings.

먼저, 도 4는 4밸브 실린더헤드용 흡기포트의 알루미늄 격벽부재(50)가 코어(20)에 결합된 구조를 나타내는 평단면도이고, 도 5는 상기 알루미늄 격벽부재(50)가 코어(20)에 결합된 구조를 나타내는 정면도로서, 코어(20) 제작시 일단부가 일체로 형성되고 타단부가 상부코어(30) 및 하부코어(40)로 분리 형성되는 코어(20)의 종방향 중간부에 상기 코어(20)의 외경 폭으로 폭이 형성되고 외곽부에 상기 코어(20) 외부면으로 돌출되는 복수개의 돌기(51)들이 형성되는 철이나 알루미늄 박판의 격벽부재(50)가 삽입되도록 한다.First, Figure 4 is a cross-sectional view showing a structure in which the aluminum partition member 50 of the intake port for four-valve cylinder head is coupled to the core 20, Figure 5 is the aluminum partition member 50 to the core 20 As the front view showing the combined structure, one end is integrally formed when the core 20 is manufactured and the other end is formed in the longitudinal middle portion of the core 20 in which the other end is separated into the upper core 30 and the lower core 40. The width of the outer diameter of the (20) is formed so that the partition member 50 of the iron or aluminum thin plate is formed in the outer portion formed with a plurality of protrusions 51 protruding to the outer surface of the core (20).

여기에서, 격벽부재(50)에 형성된 복수개의 구멍은 결합공(52)으로서 상부코어(30)와 하부코어(40)를 결합할 때 상기 결합공(52)을 통해 결합되도록 하는 것이다.Here, the plurality of holes formed in the partition member 50 are to be coupled through the coupling hole 52 when the upper core 30 and the lower core 40 are combined as the coupling hole 52.

이러한 본 발명의 코어는 기관의 실린더헤드 제조시 실린더헤드용 금형에 장착하고 주물 용탕을 주입하는데, 용탕 주입시 외부로 돌출된 격벽부재(50)의 돌기(51)들이 코어(20) 외부에 주입되는 용탕에 깊이 박히게 되어 코어(20)를 깨뜨린 후 실린더헤드의 흡기포트 내벽면에 견고하게 결합된다.The core of the present invention is mounted on the mold for the cylinder head during the manufacture of the cylinder head of the engine and injects casting molten metal. The projections 51 of the partition member 50 protruding outward during injection of the molten metal are injected outside the core 20. After being embedded in the molten metal, the core 20 is broken and firmly coupled to the inner wall surface of the intake port of the cylinder head.

도 6은 금형에 의해 코어를 제조하는 것을 나타내는 단면도로서, 내부에 상기 상부코어(30) 및 코어(20)의 일측 상단부 형상이 새겨진 금형(10)의 상부틀과 하부코어(40) 및 코어(20)의 일측 하단부 형상이 새겨진 금형(10)의 하부틀을 서로 착탈 가능하게 결합시키고, 코어(20)의 일단부 쪽에 형성되는 금형(10)의 주입구에 주물사를 투입하여 코어(20)를 제조하며, 이때 알루미늄 또는 철재의 격벽부재(50)를 먼저 상부코어(30)와 하부코어(40) 사이에 삽입 후 주물사를 투입한다.6 is a cross-sectional view showing the manufacturing of the core by a mold, the upper frame and the lower core 40 and the core of the mold 10 is engraved inside the upper core 30 and the shape of the upper end of one side of the core 20 ( The bottom frame of the mold 10 engraved with one side lower end shape of 20) is detachably coupled to each other, and the core 20 is manufactured by injecting molding sand into an injection hole of the mold 10 formed at one end of the core 20. At this time, the partition member 50 of aluminum or iron is first inserted between the upper core 30 and the lower core 40, and then the molding sand is input.

도 7은 금형에 주물을 주입한 후 실린더헤드의 흡기포트 부위에 격벽이 설치된 상태를 나타내는 종단면도 이고, 도 8은 도 7의 B-B선 단면도로 흡기포트의 격벽 구조를 나타내는 횡단면도 로서, 격벽부재(50)가 외곽의 돌기(51)들에 의해 실린더헤드의 흡기포트(60) 내벽면에 박혀 결합됨을 보인다.FIG. 7 is a longitudinal sectional view showing a state in which a partition is installed at an intake port portion of a cylinder head after injection of a casting into a mold, and FIG. 8 is a cross-sectional view illustrating a partition structure of an intake port in a sectional view taken along line BB of FIG. It is shown that 50 is embedded in the inner wall surface of the intake port 60 of the cylinder head by the outer protrusions 51.

여기서, 61, 62는 4밸브 기관의 흡기포트(60)에서 상부포트(61)와 하부포트(62)를 나타낸다.Here, 61 and 62 represent the upper port 61 and the lower port 62 in the intake port 60 of the four-valve engine.

한편, 도 9는 본 발명의 다른 실시예를 나타내는 것으로, 2밸브의 흡기포트를 좌, 우로 각각 분리 형성하는 경우의 코어(70)를 나타내며, 1밸브 흡기포트나 1밸브를 좌, 우로 분리 형성하거나 역시, 코어 제조 및 주조방식의 원칙은 동일하다.On the other hand, Figure 9 shows another embodiment of the present invention, and shows a core 70 in the case of separately forming the intake port of the two valves to the left and right, respectively, the one-valve intake port or one valve separated to the left and right Or again, the principles of core manufacturing and casting are the same.

즉, 본 발명은 외곽부에 돌기(51)들이 돌출되는 박판의 격벽부재(50)를 상부코어(30)와 하부코어(40) 사이에 두고 코어(20)를 제작하고, 상기 코어(20)를 실린더헤드 제조시 금형의 흡기포트 부위에 장착한 후 주물을 주입하도록 하여, 상기 주물사로 된 코어(20)를 털어낼 때 상기 격벽부재(50)가 외곽의 돌기(51)들에 의해 실린더헤드의 흡기포트(60) 내벽에 결합된 상태로 있도록 하여 이중 흡기포트(60)가 형성되도록 하는 것이다.That is, in the present invention, the core 20 is manufactured by placing the partition wall member 50 of the thin plate on which the protrusions 51 are protruded between the upper core 30 and the lower core 40, and the core 20. Is mounted on the intake port portion of the mold during the manufacture of the cylinder head, and the casting is injected. When the core 20 made of the molding sand is shaken off, the partition member 50 is surrounded by the protrusions 51 of the cylinder head. It is to be coupled to the intake port 60 of the inner wall of the double intake port 60 is to be formed.

이러한 본 발명은 실린더헤드 주조시 흡기포트(60)를 2중으로 형성하는 방법이 코어(20)에 결합된 알루미늄 또는 철판의 격벽부재(50)에 의해 격벽이 이뤄지도록 하는 것이 특징이며, 종래 제조방법에서는 코어에 중공부를 형성하여 주조시 주물 용액이 상기 중공부에 유입되도록 하여 격벽이 형성되도록 하는 것과 비교가 된다.The present invention is characterized in that the partition wall is formed by the partition member 50 of the aluminum or iron plate coupled to the core 20 in the method of forming the intake port 60 in the double cylinder head casting, the conventional manufacturing method In comparison with forming a hollow portion in the core so that the casting solution flows into the hollow portion during casting to form a partition wall.

이러한 본 발명은 코어가 격벽부재를 사이에 두고 일체로 형성되어 제품의 성형 정밀도를 향상시킬 수 있고, 제품의 원가를 저감할 수 있게 되며, 박판의 격벽부재를 사용하여 격벽을 형성하므로 격벽의 두께를 얇게 형성하는 것이 가능하다.In the present invention, the core is integrally formed with the partition member interposed therebetween to improve the molding precision of the product, and to reduce the cost of the product, and to form the partition wall using the partition wall member of the thin plate so that the thickness of the partition wall It is possible to form a thin.

Claims (2)

통상 연소실과 이중의 흡기포트가 연통되게 형성되는 기관의 실린더헤드를 주조에 의해 제조하는 것에 있어서, 외곽부에 돌기(51)들이 돌출되는 박판의 격벽부재(50)가 코어(20)의 상부코어(30)와 하부코어(40) 사이에서 상기 돌기들이 외부로 돌출되게 결합되도록 하여, 상기 코어가 상기 실리더헤드 제조용 금형의 흡기포트 부위에 장착된 후 주조되도록 하므로, 상기 코어를 털어낼 때 상기 격벽부재의 돌기들이 상기 실린더헤드의 흡기포트(60) 내벽에 결합되어 이중 흡기포트(60)가 형성되도록 하는 것을 특징으로 하는 실린더헤드의 흡기포트 성형방법.In the manufacture of a cylinder head of an engine in which a combustion chamber and a double intake port are usually communicated with each other by casting, a thin plate partition member 50 having protrusions 51 protruding outward is formed on the upper core of the core 20. The protrusions are coupled between the lower core 40 and the lower core 40 so as to protrude to the outside, so that the cores are mounted on the intake port portion of the mold for manufacturing the cylinder head, and then cast. The projections of the partition member are coupled to the inner wall of the intake port (60) of the cylinder head to form a double intake port (60). 통상 연소실과 이중의 흡기포트가 연통되게 형성되는 기관의 실린더헤드를 주조에 의해 제조하는 것에 있어서, 상기 흡기포트를 이루기 위한 코어가 주물사로 된 상부코어(30) 및 하부코어(40) 사이에 외경 폭으로 폭이 형성되고 외부면으로 복수개의 돌기(51)들 이 돌출되게 형성되는 박판의 격벽부재(50)가 삽입되어 일체로 결합 형성되는 것을 특징으로 하는 실린더헤드의 흡기포트 성형용 코어구조.In manufacturing a cylinder head of an engine in which a combustion chamber and a double intake port communicate with each other by casting, an outer diameter is formed between the upper core 30 and the lower core 40 whose cores for forming the intake port are formed by casting sand. A core structure for forming an intake port of a cylinder head, characterized in that the width is formed in width and the partition member 50 of the thin plate which is formed to protrude a plurality of protrusions 51 to the outer surface is inserted and integrally formed.
KR1019970033695A 1997-07-18 1997-07-18 Engine pot forming method and core KR100244394B1 (en)

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