KR20030005808A - Crash pad forming method of vehicle - Google Patents

Crash pad forming method of vehicle Download PDF

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Publication number
KR20030005808A
KR20030005808A KR1020010041265A KR20010041265A KR20030005808A KR 20030005808 A KR20030005808 A KR 20030005808A KR 1020010041265 A KR1020010041265 A KR 1020010041265A KR 20010041265 A KR20010041265 A KR 20010041265A KR 20030005808 A KR20030005808 A KR 20030005808A
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KR
South Korea
Prior art keywords
skin
crash pad
polyurethane foam
core panel
mold
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Application number
KR1020010041265A
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Korean (ko)
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KR100412663B1 (en
Inventor
최성식
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현대자동차주식회사
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Priority to KR10-2001-0041265A priority Critical patent/KR100412663B1/en
Publication of KR20030005808A publication Critical patent/KR20030005808A/en
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Publication of KR100412663B1 publication Critical patent/KR100412663B1/en

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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
    • B29C44/00—Shaping by internal pressure generated in the material, e.g. swelling or foaming ; Producing porous or cellular expanded plastics articles
    • B29C44/02—Shaping 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
    • B29C44/12—Incorporating or moulding on preformed parts, e.g. inserts or reinforcements
    • B29C44/1214—Anchoring by foaming into a preformed part, e.g. by penetrating through holes
    • 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
    • B29C44/00—Shaping by internal pressure generated in the material, e.g. swelling or foaming ; Producing porous or cellular expanded plastics articles
    • B29C44/34—Auxiliary operations
    • B29C44/3403—Foaming under special conditions, e.g. in sub-atmospheric pressure, in or on a liquid
    • 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
    • B29C44/00—Shaping by internal pressure generated in the material, e.g. swelling or foaming ; Producing porous or cellular expanded plastics articles
    • B29C44/34—Auxiliary operations
    • B29C44/56—After-treatment of articles, e.g. for altering the shape
    • B29C44/5627—After-treatment of articles, e.g. for altering the shape by mechanical deformation, e.g. crushing, embossing, stretching
    • 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
    • B29C44/00—Shaping by internal pressure generated in the material, e.g. swelling or foaming ; Producing porous or cellular expanded plastics articles
    • B29C44/34—Auxiliary operations
    • B29C44/58—Moulds
    • B29C44/588—Moulds with means for venting, e.g. releasing foaming gas
    • B—PERFORMING OPERATIONS; TRANSPORTING
    • B29—WORKING OF PLASTICS; WORKING OF SUBSTANCES IN A PLASTIC STATE IN GENERAL
    • B29L—INDEXING SCHEME ASSOCIATED WITH SUBCLASS B29C, RELATING TO PARTICULAR ARTICLES
    • B29L2031/00—Other particular articles
    • B29L2031/58—Upholstery or cushions, e.g. vehicle upholstery or interior padding

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  • Engineering & Computer Science (AREA)
  • Mechanical Engineering (AREA)
  • Casting Or Compression Moulding Of Plastics Or The Like (AREA)

Abstract

PURPOSE: A method for fabricating a crash pad of a vehicle is provided to improve an outer appearance of the crash pad by preventing an end part of the crash pad from being exposed to an exterior. CONSTITUTION: A skin(110) forming a crash pad(200) is rolled into polyurethane foam. Then, a notch section is fixed in such a manner that a predetermined portion of the skin(110) rolled into polyurethane foam has a predetermined shape. The skin(110) and a crash pad core panel(140) coupled to the skin(110) are set in a female type porous mold. After that, polyurethane foam is injected in a space formed between the skin(110) and the crash pad core panel(140). Polyurethane foam is bonded to the skin. Then, the skin(110) integrally formed with polyurethane foam is pulled so that the skin(110) is cut.

Description

차량의 크래쉬 패드 성형방법{CRASH PAD FORMING METHOD OF VEHICLE}CRASH PAD FORMING METHOD OF VEHICLE

본 발명은 차량의 크래쉬 패드에 관한 것으로서, 특히 차량의 크래쉬 패드 성형방법에 관한 것이다.The present invention relates to a crash pad of a vehicle, and more particularly to a method of forming a crash pad of a vehicle.

도 1을 참조하여 종래 기술에 따른 부분 패드 부착 크래쉬 패드(50)(Crash Pad)의 성형방법을 설명한다.With reference to FIG. 1, the shaping | molding method of the crash pad 50 with a partial pad by a prior art is demonstrated.

종래의 크래쉬 패드(50) 제작 공정은 먼저, 도 1에 도시된 바와 같이 상부 금형(10)과 하부 금형(20)으로 이루어진 크래쉬 패드 금형에서, 상부 금형(10)을 열고 하부 금형(20)에 표피(30)(Skin)을 세팅한다(①공정). 그리고, 상부 금형(10)에 인서트(40)(Insert)를 세팅한다(②공정). 이어서, 표피(30)가 세팅된 상면에 폴리우레탄(PU : Polyurethane) 액을 주입한다(③공정). 그리고, 상부 금형(10)을 닫고 경화시킨다(④고공정). 이어서, 상부 금형(10)을 열고 크래쉬 패드(50)를 탈형한 후 이형제를 도포한다(⑤공정).In the conventional crash pad 50 manufacturing process, as shown in FIG. 1, in the crash pad mold including the upper mold 10 and the lower mold 20, the upper mold 10 is opened to the lower mold 20. Skin (30) (Skin) is set (① process). And the insert 40 (Insert) is set in the upper metal mold | die 10 (2 process). Subsequently, a polyurethane (PU: Polyurethane) solution is injected into the upper surface on which the skin 30 is set (③ process). Then, the upper mold 10 is closed and cured (④ high process). Subsequently, the upper mold 10 is opened, the crash pad 50 is demolded, and a release agent is applied (5).

이와 같은 공정으로 이루어지는 크래쉬 패드(50)의 성형에 있어서, 일체 발포 방식을 사용하는 경우 크래쉬 패드(50) 끝 부분에서 표피(30)와 폴리우레탄 폼의 절단면이 노출되므로 별도 부품을 사용하여 노출 부분을 덮는다거나 진공 성형 또는 슬러시(Slush) 성형에 의한 표피(30)를 사용해 일체 성형한다.In the molding of the crash pad 50 formed as described above, when the integral foaming method is used, since the cut surface of the skin 30 and the polyurethane foam is exposed at the end of the crash pad 50, the exposed part using a separate part. Or integrally molded using the skin 30 by vacuum molding or slush molding.

표피(30)를 일체 성형하는 경우 메일 타입(Male Type)의 금형 사용으로 진공 성형시 엠보(Embo)가 없어지며, 크래쉬 패드(50) 형상 유지와 코어 패널(Core Panel)에의 부착을 위해서 별도의 인서트 공구가 필요하다.In case of integrally molding the skin 30, the emboss disappears during vacuum molding by using the male type mold, and it is separate to maintain the shape of the crash pad 50 and to attach it to the core panel. You need an insert tool.

이와 같은 이유로 공정원가가 상승되며, 크래쉬 패드(50)에 표피(30)를 부착할 때 오차에 의한 치수 안정성 저하, 크래쉬 패드(50)와 코어 패널 간의 노이즈 (Noise) 등의 문제점이 있었다.For this reason, the process cost is increased, and there are problems such as dimensional stability deterioration due to an error when attaching the skin 30 to the crash pad 50, and noise between the crash pad 50 and the core panel.

또한, 슬러시 성형의 표피(30)를 사용한 일체 발포 방식은 표피(30) 단말부가 트리밍(Trimming)되어 있어서 발포형에서의 표피(30) 고정 및 코어 패널을 패드의 표피(30) 단말부에 위치 세팅하기 위해서는 표피(30) 단말 형상의 빼기 각도를 동일한 방향으로 해야 하는 설계상의 제약이 있었다.In addition, in the integral foaming method using the skin 30 of slush molding, the skin part 30 is trimmed so that the skin 30 is fixed and the core panel is placed in the skin part 30 of the pad. In order to set, there was a design limitation that the subtraction angle of the skin 30 terminal shape should be in the same direction.

본 발명의 목적은 크래쉬 패드의 외관을 향상시킬 수 있는 차량의 크래쉬 패드 성형방법을 제공하는데 있다.An object of the present invention is to provide a crash pad molding method of a vehicle that can improve the appearance of the crash pad.

상기와 같은 목적을 달성하기 위하여 본 발명은 차량의 크래쉬 패드 성형방법에 있어서, 상기 크래쉬 패드를 구성하는 표피를 폴리우레탄 폼쪽으로 말려 들어가게 하는 단계와; 상기 말려 들어간 부분과 그 말려 들어가게 한 부분을 되접어 꺾은 부분이 설정된 형상을 이루도록 노치부를 고정시키는 단계와; 상기 노치부 고정된 형상의 표피와 상기 표피가 결합되는 크래쉬 패드 코어 패널을 피메일 타입의 통기성 금형에 세팅하는 단계와; 상기 표피와 크래쉬 패드 코어 패널 사이에 생긴 공간에 폴리우레탄 폼을 주입 발포하는 단계와; 상기 발포된 폴리우레탄 폼과 표피를 접착하여 일체화시키는 단계와; 상기 폴리우레탄 폼과 일체화 성형된 표피를 잡아당겨 절단 제거하는 단계를 포함하여 이루어지는 것을 특징으로 한다.In order to achieve the above object, the present invention provides a method for forming a crash pad of a vehicle, comprising: drying the skin constituting the crash pad toward a polyurethane foam; Fixing the notched part so that the curled part and the curled part are folded back to form a set shape; Setting a crash pad core panel to which the cutout-shaped skin and the skin are coupled to a breathable mold of a female type; Injecting and foaming polyurethane foam into a space formed between the skin and the crash pad core panel; Bonding and integrating the foamed polyurethane foam and the skin; And pulling and removing the cuticle integrally formed with the polyurethane foam.

도 1은 종래 기술에 따른 크래쉬 패드 성형과정을 도시한 공정도.1 is a process chart showing a crash pad forming process according to the prior art.

도 2a와 도 2b는 본 발명의 실시예에 따른 크래쉬 패드를 구성하는 표피의 성형방법을 도시한 도면.2A and 2B illustrate a method of forming the skin constituting the crash pad according to the embodiment of the present invention.

도 3a와 도 3b는 본 발명의 실시예에 따른 크래쉬 패드의 성형방법을 도시한 도면.3A and 3B illustrate a method of forming a crash pad according to an embodiment of the present invention.

이하 본 발명의 바람직한 실시예를 첨부한 도면을 참조하여 상세히 설명한다. 하기 설명 및 첨부 도면과 같은 많은 특정 상세들이 본 발명의 보다 전반적인 이해를 제공하기 위해 나타나 있으나, 이들 특정 상세들은 본 발명의 설명을 위해 예시한 것으로 본 발명이 그들에 한정됨을 의미하는 것은 아니다. 그리고 본 발명의 요지를 불필요하게 흐릴 수 있는 공지 기능 및 구성에 대한 상세한 설명은 생략한다.Hereinafter, exemplary embodiments of the present invention will be described in detail with reference to the accompanying drawings. While many specific details, such as the following description and the annexed drawings, are shown to provide a more general understanding of the invention, these specific details are illustrated for the purpose of explanation of the invention and are not meant to limit the invention thereto. And a detailed description of known functions and configurations that may unnecessarily obscure the subject matter of the present invention will be omitted.

도 2a와 도 3b를 참조하여 본 발명의 실시예에 따른 차량의 크래쉬 패드 (200) 성형방법을 설명한다. 도 2a와 도 2b는 본 발명의 실시예에 따른 크래쉬 패드(200)를 구성하는 표피(110)의 성형방법이며, 도 3a와 도 3b는 도 2a와 도 2b의 단계를 통해 성형된 표피(110)를 크래쉬 패드(200)에 결합하는 성형방법을 도시한도면이다.2A and 3B, a method of forming the crash pad 200 of a vehicle according to an exemplary embodiment of the present invention will be described. 2A and 2B illustrate a method of forming the skin 110 constituting the crash pad 200 according to an embodiment of the present invention, and FIGS. 3A and 3B illustrate the skin 110 formed through the steps of FIGS. 2A and 2B. ) Is a view showing a molding method for coupling to the crash pad 200.

먼저, 도 2a와 도 2b를 참조하여 표피(110)의 성형방법을 설명한다.First, the shaping method of the skin 110 will be described with reference to FIGS. 2A and 2B.

표피(110)의 성형과정은 도 2a와 도 2b에 도시된 바와 같이 크래쉬 패드 (200)를 구성하는 표피(110)를 폴리우레탄 폼(150)쪽으로 말려 들어가게 하고, 말려 들어간 부분과 그 말려 들어가게 한 부분을 되접어 꺾은 부분이 설정된 형상(영문자 "V"자형)을 이루도록 노치부(112)를 고정시킨다. 참조 번호 (100)은 전주 금형을 나타낸다.The molding process of the skin 110 causes the skin 110 constituting the crash pad 200 to be rolled into the polyurethane foam 150, as shown in FIGS. The notched part 112 is fixed so that the folded part forms a set shape (English letter “V” shape). Reference numeral 100 denotes a pole mold.

이와 같은 상태에서 도 3a에 도시된 바와 같이 노치부(112) 고정된 형상의 표피(110)와 표피(110)가 결합되는 크래쉬 패드 코어 패널(140)(Crash Pad Core Panel)을 피메일 타입(Female Type)의 통기성 금형(120)에 세팅한다.In this state, as shown in FIG. 3A, the crash pad core panel 140 (Crash Pad Core Panel) to which the cuticle 110 and the cuticle 110 having the fixed shape of the notch part 112 are coupled is a female type ( It is set in the breathable mold 120 of the Female Type.

참고적으로, 크래쉬 패드 코어 패널(140)의 코너 부분이 놓여지는 통기성 금형(120)에는 진공 흡입구(122)를 미리 형성한다.For reference, the vacuum suction hole 122 is formed in advance in the breathable mold 120 in which the corner portion of the crash pad core panel 140 is placed.

이어서, 표피(110)와 크래쉬 패드 코어 패널(140) 사이에 생긴 공간에 폴리우레탄 폼(150)을 주입 발포하고, 발포된 폴리우레탄 폼(150)과 표피(110)를 접착하여 일체화시킨다.Subsequently, the polyurethane foam 150 is injected and foamed into a space formed between the skin 110 and the crash pad core panel 140, and the foamed polyurethane foam 150 and the skin 110 are bonded and integrated.

여기서, 표피(110)와 크래쉬 패드 코어 패널(140)을 피메일 타입의 통기성 금형(120)에 세팅하는 단계는 크래쉬 패드 코어 패널(140)에 결합되는 표피(110)의 끝부분(114)을 통기성 금형(120)에 접착제(130)로 접착하여 실링(Sealing)하는 단계와; 접착된 표피(110)의 끝부분(114)을 통기성 금형(120)에 밀착되도록 진공 흡입하는 단계로 이루어진다.Here, the step of setting the epidermis 110 and the crash pad core panel 140 to the breathable mold 120 of the female type is the end portion 114 of the epidermis 110 coupled to the crash pad core panel 140. Bonding to the breathable mold 120 with an adhesive 130 to seal; A vacuum suction is performed such that the end portion 114 of the bonded skin 110 is in close contact with the breathable mold 120.

그리고, 폴리우레탄 폼(150)과 일체화 성형된 표피(110)를 잡아당겨 절단 제거하여 크래쉬 패드(200)를 성형한다. 도 3b에 도시된 참조 번호 (160)는 상부 금형을 나타낸다.Then, by pulling and removing the cuticle 110 integrally molded with the polyurethane foam 150, the crash pad 200 is formed. Reference numeral 160 shown in FIG. 3B denotes an upper mold.

상기한 바와 같이 본 발명의 실시예에 따른 차량의 크래쉬 패드(200) 성형방법은 종래 기술에서와 같이 메일 타입(Male Type)의 금형을 사용한 진공 성형과는 달리 피메일 타입(Female Type)의 통기성 금형을 사용하며, 노치부(112) 고정된 형상의 표피(110)를 도 3a에 도시된 바와 같이 세팅한다. 이때 표피(110)의 끝부분(114)을 접착제(130)(테이프)로 실링(Sealing)하고, 통기성 금형에 형성된 진공 흡입구(122)를 이용하여 표피(110)의 끝부분(114)을 진공 흡입하여 공기를 빼내면 표피(110)가 통기성 금형에 밀착해서 세팅된다.As described above, the method for forming the crash pad 200 of the vehicle according to the exemplary embodiment of the present invention is different from the vacuum molding using a male type mold as in the prior art, and has a breathable type of female type. A mold is used, and the cuticle 110 having the notched portion 112 fixed shape is set as shown in FIG. 3A. At this time, the end portion 114 of the epidermis 110 is sealed with an adhesive 130 (tape), and the end portion 114 of the epidermis 110 is vacuumed using the vacuum inlet 122 formed in the breathable mold. When the air is sucked out, the epidermis 110 is set in close contact with the breathable mold.

상술한 바와 같이 본 발명에 따른 차량의 크래쉬 패드 성형방법은 피메일 타입 금형으로 표피에 형성되는 엠보 무늬의 형상을 향상시킬 수 있으며, 표피를 금형에 세팅하는 작업을 단순화시키고, 크래쉬 패드의 나온 부위 외관을 가리기 위해 별도 부품(인서트 공구)이 필요 없으며, 크래쉬 패드 끝부분이 노출되지 않고 부분 패드 적용으로 외관을 향상시킬 수 있는 효과가 있다.As described above, the method for forming a crash pad of a vehicle according to the present invention can improve the shape of the embossed pattern formed on the epidermis with a female mold, simplify the operation of setting the epidermis on the mold, and the portion of the crash pad. There is no need for a separate part (insert tool) to cover the exterior, and the crash pad end is not exposed, and the partial pad is applied to improve the appearance.

Claims (3)

차량의 크래쉬 패드 성형방법에 있어서,In the crash pad molding method of a vehicle, 상기 크래쉬 패드를 구성하는 표피를 폴리우레탄 폼쪽으로 말려 들어가게 하는 단계와;Drying the skin constituting the crash pad toward the polyurethane foam; 상기 말려 들어간 부분과 그 말려 들어가게 한 부분을 되접어 꺾은 부분이 설정된 형상을 이루도록 노치부를 고정시키는 단계와;Fixing the notched part so that the curled part and the curled part are folded back to form a set shape; 상기 노치부 고정된 형상의 표피와 상기 표피가 결합되는 크래쉬 패드 코어 패널을 피메일 타입의 통기성 금형에 세팅하는 단계와;Setting a crash pad core panel to which the cutout-shaped skin and the skin are coupled to a breathable mold of a female type; 상기 표피와 크래쉬 패드 코어 패널 사이에 생긴 공간에 폴리우레탄 폼을 주입 발포하는 단계와;Injecting and foaming polyurethane foam into a space formed between the skin and the crash pad core panel; 상기 발포된 폴리우레탄 폼과 표피를 접착하여 일체화시키는 단계와;Bonding and integrating the foamed polyurethane foam and the skin; 상기 폴리우레탄 폼과 일체화 성형된 표피를 잡아당겨 절단 제거하는 단계를 포함하여 이루어지는 것을 특징으로 하는 차량의 크래쉬 패드 성형방법.And pulling and removing the cuticle formed integrally with the polyurethane foam. 제1항에 있어서, 상기 크래쉬 패드 코어 패널의 코너 부분이 놓여지는 상기 통기성 금형에 진공 흡입구를 미리 형성하는 단계를 포함하여 이루어지는 것을 특징으로 하는 차량의 크래쉬 패드 성형방법.The method of claim 1, further comprising forming a vacuum suction port in advance in the breathable mold in which the corner portion of the crash pad core panel is placed. 제1항에 있어서, 상기 표피와 크래쉬 패드 코어 패널을 상기 피메일 타입의통기성 금형에 세팅하는 단계는The method of claim 1, wherein the step of setting the skin and the crash pad core panel to the breathable mold of the female type 상기 크래쉬 패드 코어 패널에 결합되는 표피의 끝부분을 상기 통기성 금형에 접착제로 접착하여 실링(Sealing)하는 단계와;Sealing the end of the epidermis bonded to the crash pad core panel by adhesive to the breathable mold; 상기 접착된 표피의 끝부분을 상기 통기성 금형에 밀착되도록 진공 흡입하는 단계로 이루어지는 것을 특징으로 하는 차량의 크래쉬 패드 성형방법.And vacuum suction the tip of the bonded skin to the breathable mold in close contact with the breathable mold.
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KR101428275B1 (en) * 2012-12-12 2014-08-07 현대자동차주식회사 Apparatus and method for manufacturing crash pad, and crash pad manufactured by the same

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KR101637769B1 (en) 2014-12-09 2016-07-07 현대자동차주식회사 Open core crash pad and process for manufacturing thereof

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FR2663880B1 (en) * 1990-06-29 1994-04-29 Roth Sa Freres PROCESS FOR THE MANUFACTURE OF POLYURETHANE FOAM MATTRESSES MOLDED IN SITU IN A TEXTILE HEADBAND AND CUSHION THUS OBTAINED.
JPH04107110A (en) * 1990-08-29 1992-04-08 Hitachi Chem Co Ltd Manufacture of pad with skin
JP3039755B2 (en) * 1994-08-19 2000-05-08 河西工業株式会社 Manufacturing method for automotive interior parts
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KR101428275B1 (en) * 2012-12-12 2014-08-07 현대자동차주식회사 Apparatus and method for manufacturing crash pad, and crash pad manufactured by the same

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