KR100196468B1 - The inlet of foaming liquid - Google Patents

The inlet of foaming liquid Download PDF

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Publication number
KR100196468B1
KR100196468B1 KR1019960038660A KR19960038660A KR100196468B1 KR 100196468 B1 KR100196468 B1 KR 100196468B1 KR 1019960038660 A KR1019960038660 A KR 1019960038660A KR 19960038660 A KR19960038660 A KR 19960038660A KR 100196468 B1 KR100196468 B1 KR 100196468B1
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South Korea
Prior art keywords
foamed
liquid
injection port
foaming
skin
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KR1019960038660A
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Korean (ko)
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KR19980020239A (en
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서정돈
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서정돈
주식회사대한
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    • BPERFORMING OPERATIONS; TRANSPORTING
    • B29WORKING OF PLASTICS; WORKING OF SUBSTANCES IN A PLASTIC STATE IN GENERAL
    • B29CSHAPING OR JOINING OF PLASTICS; SHAPING OF MATERIAL IN A PLASTIC STATE, NOT OTHERWISE PROVIDED FOR; AFTER-TREATMENT OF THE SHAPED PRODUCTS, e.g. REPAIRING
    • B29C44/00Shaping by internal pressure generated in the material, e.g. swelling or foaming ; Producing porous or cellular expanded plastics articles
    • B29C44/34Auxiliary operations
    • B29C44/36Feeding the material to be shaped
    • BPERFORMING OPERATIONS; TRANSPORTING
    • B29WORKING OF PLASTICS; WORKING OF SUBSTANCES IN A PLASTIC STATE IN GENERAL
    • B29CSHAPING OR JOINING OF PLASTICS; SHAPING OF MATERIAL IN A PLASTIC STATE, NOT OTHERWISE PROVIDED FOR; AFTER-TREATMENT OF THE SHAPED PRODUCTS, e.g. REPAIRING
    • B29C44/00Shaping by internal pressure generated in the material, e.g. swelling or foaming ; Producing porous or cellular expanded plastics articles
    • B29C44/02Shaping by internal pressure generated in the material, e.g. swelling or foaming ; Producing porous or cellular expanded plastics articles for articles of definite length, i.e. discrete articles
    • B29C44/12Incorporating or moulding on preformed parts, e.g. inserts or reinforcements
    • B29C44/18Filling preformed cavities

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  • Casting Or Compression Moulding Of Plastics Or The Like (AREA)

Abstract

본 발명은 자동차 좌석의 헤드레스트나 암레스트와 같은 입체 형상의 표피일체 발포성형품을 제조할 때에 사용하는 발포액주입구에 관한 것으로, 헤드레스트의 외관을 이루는 표피(1) 내부에 발포액을 주입할 수 있도록 된 발포액주입구에 있어서, 상기 발포액주입구(6)의 주입구몸체(61) 하단 가까이서 주입구몸체(61)의 길이 방향(종방향)을 따라 슬리트형 주입구멍(65)이 형성된 것임.The present invention relates to a foamed liquid injection port for use in producing a foamed molded article having a three-dimensional shape such as a headrest or an armrest of an automobile seat, wherein the foamed liquid is injected into the inside of the skin (1) A slit-shaped injection hole 65 is formed along the longitudinal direction (longitudinal direction) of the injection port body 61 near the lower end of the injection port body 61 of the foamed liquid injection port 6.

Description

발포액주입구Foam solution inlet

제1도는 헤드레스트의 종단면도.1 is a longitudinal sectional view of a headrest;

제2도는 헤드레스트의 횡단면도.Figure 2 is a cross-sectional view of the headrest;

제3도는 종래의 발포액주입구의 단면도.FIG. 3 is a cross-sectional view of a conventional foamed liquid injection port. FIG.

제4도는 종래의 발포액주입구를 사용한 발포액주입 개념도.FIG. 4 is a conceptual view of a conventional foamed liquid injection using a foamed liquid inlet; FIG.

제5도는 종래의 발포액주입구를 사용한 발포액주입 개념도.FIG. 5 is a conceptual view of a foamed liquid injection using a conventional foamed liquid inlet.

제6도는 본 발명에 따른 발포액주입구의 단면도.FIG. 6 is a sectional view of the foamed liquid injection port according to the present invention. FIG.

제7도는 제6도의 A-A선 단면도.7 is a cross-sectional view taken along line A-A of FIG. 6;

제8도는 본 발명에 따른 발포액주입구를 사용한 발포액주입 개념도.FIG. 8 is a conceptual view of a foamed liquid injection using a foamed liquid injection port according to the present invention; FIG.

제9도는 본 발명에 따른 발포액주입구를 사용한 발포액주입 개념도.FIG. 9 is a conceptual view of a foamed liquid injection using a foamed liquid inlet according to the present invention; FIG.

* 도면의 주요부분에 대한 부호의 설명DESCRIPTION OF THE REFERENCE NUMERALS

1 : 표피 4, 6 : 발포액주입구1: epidermis 4, 6: foaming solution inlet

2 : 개구덮개몸체 23, 63 : 발포액주입구멍2: opening cover body 23, 63: foaming liquid injection hole

45,65 : 주입구멍45, 65: Injection hole

본 발명은 자동차 좌석의 헤드레스트나 암레스트와 같은 입체 형상의 표피일체 발포성형품을 제조할 때에 사용하는 발포액주입구(發泡液注入具)에 관한 것이다.BACKGROUND OF THE INVENTION 1. Field of the Invention [0001] The present invention relates to a foamed liquid injecting tool used for producing a foamed molded article having a three-dimensional shape such as a headrest or an armrest of an automobile seat.

종래에는 헤드레스트나 암레스트와 같은 물품(이하 발포성형품이라 함)은 표피 재료편을 발포성형 제품의 최종적으로 소망하는 윤각에 맞춘 입체 형상으로 봉제하고, 이렇게 봉제된 표피를 헤드레스트의 성형틀(후술하는 개구덮개몸체)에 씌운 다음, 여기에 고속 반응형 우레탄과 같은 발포액을 발포하여 발포성형품으로 완성하게 된다.BACKGROUND OF THE INVENTION [0002] Conventionally, articles such as headrests and armrests (hereinafter referred to as foamed molded articles) are produced by sewing a skin material piece in a three-dimensional shape conforming to the final desired oval angle of a foamed molded product, Described later), and then foamed liquid such as high-speed reaction type urethane is foamed to complete the foamed molded article.

이때 상기와 같이 표피를 제작할 때 봉제 작업으로 인하여 생긴 시접은 외관미를 향상시키기 위하여 겉으로 드러나지 않도록 내부에 감출 필요가 있다.At this time, when the skin is made as described above, it is necessary to conceal the inside of the seam so that it is not exposed to the outside in order to improve the appearance.

즉, 제1도 및 제2도에는 헤드레스트의 조립단면도를 도시하고 있는 것으로, 헤드레스트의 표피(1)를 봉제할 때에는 제품의 이면(裏面)이 겉으로 되도록 한 상태에서 제품의 최종적으로 소망하는 윤각에 맞춘 입체 형상으로 표피 재료편(보통천 종류를 사용한다)을 봉제하고, 이렇게 봉제된 표피 재료편을 뒤집으로면 표피(1)가 완성된다.1 and 2 show assembly cross-sectional views of the headrest. When the skin 1 of the headrest is sewed, the back side of the product is to be covered, The skin material 1 (usually cloth is used) is sewn in a three-dimensional shape adapted to the angle of erection, and the skin material 1 is completed by reversing the skin material piece thus sewn.

상기와 같이 완성된 표피(1)의 일측 개구부에는 발포액주입구멍(23)이 형성 구비되어 있는 개구덮개몸체(2)를 끼워 넣어 표피(1)의 개구부를 밀폐하면서 표피를 개구덮개몸체(2)에 고정하게 된다.The opening cover body 2 having the foamed liquid injection hole 23 formed therein is inserted into one opening of the finished skin 1 as described above to seal the opening of the skin 1 to the skin of the opening cover body 2 .

그리고, 상기 발포액주입구멍(23)에다 발포액주입구(4)를 끼워 넣고 이 발포액주입구(4)를 통하여 고속반응형의 우레탄 원료액(발포액)을 봉제의 내외 표피 안에 주입하게 되면, 이렇게 주입된 우레탄 원료액(발포액)은 봉제의 내외 표피 안에서 발포되면서 확산 팽창하게 되어 표피 안에 충만하게 되어 표피가 소망하는 헤드레스트의 외관 형상으로 형성되게 된다.When the foaming liquid injection port 4 is inserted into the foaming liquid injection hole 23 and the high-reaction type urethane raw material liquid (foaming liquid) is injected into the inner and outer skin of the garment through the foaming liquid injection port 4, The injected urethane raw material liquid (foamed liquid) is foamed in the inner and outer skin of the sewing, spreads and expands, and becomes filled in the epidermis, so that the epidermis is formed into the outer shape of the desired headrest.

여기서, 종래의 발포액주입구(4)는 제3도에 도시된 바와 같이 몸체(41)하단에 원형으로 하여 주입구멍(45)을 가공하여 이 주입구멍(45)을 통하여 발포액을 표피 안으로 주입하도록 되어 있었다.As shown in FIG. 3, the conventional foamed liquid injection port 4 has an injection hole 45 formed in a circular shape at the lower end of the body 41 and injects the foamed liquid into the epidermis through the injection hole 45 .

이와 같이 몸체 하단에 원형으로 가공된 주입구멍(45)이 구비된 발포액주입구(4)를 사용하여 발포액을 발포할 때에는 제4도 및 제5도에 도시한 바와 같이, 주입구멍(45)을 통하여 한 방향으로만 집중적으로 발포액을 주입하게 된다.As shown in FIGS. 4 and 5, when the foamed liquid is foamed by using the foamed liquid injection port 4 provided with the injection hole 45 circularly formed at the lower end of the body, The foamed liquid is injected intensively only in one direction.

그러나, 상기와 같이 종래에 발포액주입구(4)의 끝단에 형성된 주입구멍(45)을 통해 한 방향으로만 발포액을 주입할 경우, 발포하는 압력이 매우 높기 때문에 표피가 찢어져 우레탄 원료액이 누수되는 문제점이 있었고, 발포되는 우레탄 원료액이 고속 반응형의 우레탄이라 하더라도 우레탄 원료액이 내외 표피에 모든 공간안에 확산 팽창되는 데 있어서, 한 방향으로만 발포되어 표피내에 완전히 확산 팽창되는 데는 약간의 시간차를 갖게 되므로 확산 팽창이 부분적으로 불균일하게 되는 문제점이 있었다.However, when the foaming liquid is injected through the injection hole 45 formed at the end of the foaming liquid injection port 4 only in one direction as described above, since the foaming pressure is very high, the skin tears and the urea raw material liquid leaks And even if the urethane raw material liquid to be foamed is a high-speed reaction type urethane liquid, the urea raw material liquid diffuses and spreads in all the spaces on the inner and outer skin. In order to spread and expand completely in one direction only, There is a problem that the diffusion expansion is partially uneven.

더욱이 상기와 같이 우레탄 원료액의 발포 팽창되는데 약간의 시간차를 두고 단계적으로 이루어지기 때문에 맨 나중에 발포액 주입구멍(45)과 주입구 쪽에서 주입되는 우레탄 원료액은 안쪽에서 확산 팽창되어 나오는 발포액의 압력으로 인하여 상기 발포액 주입구멍(45) 부분에 있는 발포액이 충분히 확산 팽창하여 발포폼으로 형성되기도 전에 우레탄 원료액이 역류하여 우레탄 발포액은 발포 주입구멍과 주입구를 통하여 넘쳐 나오면서 발포 작업이 완료되기 때문에, 봉제의 내외 표피 안에 확산 팽창되는 발포폼의 조직과 압력이 전체 부분을 통하여 균일하지 못하게 되는 문제점이 있었다.Further, since the urea raw material liquid is foamed and expanded as described above, the urea raw material liquid injected from the foaming liquid injection hole 45 and the injection port is introduced into the foaming liquid which is diffused and expanded from the inside, The urea raw material liquid flows backward before the foaming liquid in the portion of the foaming liquid injection hole 45 sufficiently diffuses and expands to form a foamed foam, and the urethane foamed liquid is overflowed through the foaming injection hole and the filling port, , The structure and pressure of the expanded foam expanding and spreading in the inner and outer skin of the sewing are not uniform throughout the whole part.

본원 발명은 상기와 같은 문제점을 해결하기에 제안된 것으로, 발포되는 발포액의 압력을 분산시키면서 발포액의 확산 팽창시간을 단축시킴과 더불어 발포액이 역류되는 것을 방지할 수 있도록 된 발포액주입구를 제공함에 그 목적이 있다.Disclosure of the Invention The present invention has been proposed in order to solve the above problems, and it is an object of the present invention to provide a foaming solution injection port capable of shortening the diffusion expansion time of a foaming solution while dispersing the pressure of foaming solution to be foamed, The purpose is to provide.

상기와 같은 목적을 달성하기 위한 본원 발명 발포액주입구는, 발포구멍을 발포액주입구의 끝단부 가까이에서 길이 방향으로 1개 또는 2개 이상의 슬리트형 구멍으로 가공하여 형성한 것을 특징으로 한다.In order to achieve the above object, the present invention is characterized in that the foaming solution injection port is formed by processing one or two or more slit-shaped holes in the longitudinal direction near the end of the foaming solution injection port.

이하 본원 발명을 첨부도면과 함께 자세히 설명하면 다음과 같다.Hereinafter, the present invention will be described in detail with reference to the accompanying drawings.

제6도 및 제7도에는 본원 발명에 따른 발포액주입구를 도시하고 있는 것으로, 본원 발명에 따른 발포액주입구(6)는 주입구몸체(61)의 하단부 꼭지점 가까이에서 발포액주입구(6)의 주입구몸체(61)의 길이방향(종 방향)을 따라 가늘고 긴 슬리트형의 주입구멍(65)을 1개 또는 2개 이상 형성하여 되는 것이다.6 and 7 show a foamed liquid injection port according to the present invention. The foamed liquid injection port 6 according to the present invention is disposed at a position near the lower end vertex of the injection port body 61, One or more slit-shaped injection holes 65 are formed along the longitudinal direction (longitudinal direction) of the body 61.

이렇게 주입구멍(65)을 주입구몸체(61)의 길이방향으로 형성하게 되면 발포액주입구(6)를 통해 주입되는 발포액의 주입방향과 주입구멍(61)을 통해 표피의 내부로 발포되는 발포방향이 수직하게 되어 발포 압력이 분산됨은 물론 압력이 낮아지게 되어, 표피에 작용하는 발포액이 압력이 낮아져 표피가 찢어지는 것이 방지되게 된다.When the injection hole 65 is formed in the longitudinal direction of the injection port body 61, the injection direction of the foamed liquid injected through the foamed liquid injection port 6 and the foamed direction The pressure is lowered as well as the foaming pressure is dispersed vertically. As a result, the pressure of the foaming liquid acting on the skin is lowered and the skin is prevented from being torn.

또한 주입구멍(65)이 주입구몸체(61)의 길이방향(종방향)으로 가늘고 길게 형성되어 있음으로 발포되는 속도가 빠르게 되고 발포된 발포액이 확산 팽창됨에 있어서 보다 빠르게 되어 균일하게 발포 성형될 수 있게 된다.Further, since the injection hole 65 is elongated in the lengthwise direction (longitudinal direction) of the injection port body 61, the foaming speed becomes faster and the foaming liquid is diffused more rapidly, .

즉, 상기와 같이 주입구멍(65)이 가공된 발포액주입구(6)를 사용하여 우레탄 원료액을 표피 안에 발포하고자 할 때는 제8도 및 제9도에 도시된 바와 같이, 헤드레스트의 외관을 이루도록 봉제된 표피(1)에 개구덮개몸체(2)를 끼워 넣어 표피(1)의 개구부를 밀폐하면서 표피(1)를 개구덮개몸체(2)에 고정한 다음, 상기 개구 덮개몸체(2)에 형성된 발포액 주입구멍(63)에다 발포액주입구(6)를 끼워 넣고, 이 발포액주입구(6)를 통하여 고속 반응형의 우레탄 원료액(발포액)을 봉제된 표피(1)안에 주입하게 된다.That is, when foaming the urea raw material liquid into the epidermis using the foamed liquid injection port 6 in which the injection hole 65 is processed as described above, as shown in FIG. 8 and FIG. 9, The skin 1 is fixed to the opening cover body 2 while closing the opening of the skin 1 by inserting the opening cover body 2 into the skin 1 sewn to be sewn so that the skin 1 is formed on the opening cover body 2, The foaming solution injection port 6 is inserted into the foaming solution injection hole 63 and the high-reaction type urethane raw material solution (foaming solution) is injected into the sewed skin 1 through the foaming solution injection port 6.

이렇게 우레탄 원료액이 긴 슬리트형 주입구멍(65)을 통하여 표피내부에 고속으로 분사됨에 따라 우레탄 원료액은 가늘고 긴 주입구멍(65)을 통하여 고르게 그리고 빠른 속도로 주입됨으로써 비교적 짧은 시간에 주입이 완료되는 것이며, 동시에 거의 같은 속도로 확산 팽창됨으로써 가늘고 긴 주입구멍(65) 근처에 있는 우레탄 원료액이 역류하여 주입구멍(65)으로 넘쳐 나오기 전에 확산 팽창되는 조직과 압력이 매우 균일한 발포폼이 형성되게 되는 것이다.As the urea raw material liquid is injected at a high speed into the skin through the long slit-shaped injection hole 65, the urethane raw material liquid is injected evenly and at a high speed through the elongated injection hole 65, At the same time, the urethane raw material liquid near the injection hole 65, which is diffused and expanded at almost the same speed, flows back into the injection hole 65 and is spread and expanded. .

이와 같이 본원 발명에 의하면, 발포액 주입구멍을 가늘고 길게 슬리트형으로 주입구몸체의 길이방향으로 형성함으로써, 발포액이 발포되는 방향이 발포액주입구에 우레탄 원료액이 주입되는 방향에 수직하게 되어 발포되는 압력이 분산되는 효과가 있게 되고, 발포된 발포액이 표피내에서 확산 팽창되는 시간이 단축됨은 물론 발포액이 발포액주입구 쪽으로 역류되는 것이 방지되어 균일하게 발포되는 효과가 있다.As described above, according to the present invention, by forming the foamed liquid injection hole in a slit shape in the longitudinal direction of the injection port body, the foamed liquid is foamed in a direction perpendicular to the direction in which the urea raw material liquid is injected into the foaming liquid injection port There is an effect that the pressure is dispersed, the time for diffusively expanding the foamed foamed liquid in the skin is shortened, and the foamed liquid is prevented from flowing back toward the foamed liquid injection port, thereby uniformly foaming.

Claims (1)

헤드레스트의 외관을 이루는 표피 내부에 발포액을 주입할 수 있도록 된 발포액주입구에 있어서, 상기 발포액주입구의 주입구몸체 하단 가까이서 주입구몸체의 길이방향(종방향)을 따라 가늘고 긴 슬리트형 주입구멍이 형성되는 것을 특징으로 하는 발포액주입구.A slit-shaped injection hole is formed along the longitudinal direction (longitudinal direction) of the injection port body near the lower end of the injection port body of the foamed liquid injection port so that the foamed liquid can be injected into the inside of the skin forming the outer appearance of the headrest Wherein the bubbling liquid is injected into the bubbling chamber.
KR1019960038660A 1996-09-06 1996-09-06 The inlet of foaming liquid KR100196468B1 (en)

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