KR20040035170A - foaming metal mold for crash pad of au tomobile - Google Patents

foaming metal mold for crash pad of au tomobile Download PDF

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Publication number
KR20040035170A
KR20040035170A KR1020020063921A KR20020063921A KR20040035170A KR 20040035170 A KR20040035170 A KR 20040035170A KR 1020020063921 A KR1020020063921 A KR 1020020063921A KR 20020063921 A KR20020063921 A KR 20020063921A KR 20040035170 A KR20040035170 A KR 20040035170A
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KR
South Korea
Prior art keywords
core
skin
crash pad
mold
foaming agent
Prior art date
Application number
KR1020020063921A
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Korean (ko)
Inventor
강병영
Original Assignee
현대모비스 주식회사
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Priority to KR1020020063921A priority Critical patent/KR20040035170A/en
Publication of KR20040035170A publication Critical patent/KR20040035170A/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
    • B29C44/1228—Joining preformed parts by the expanding material
    • 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
    • B29C44/128—Internally reinforcing constructional elements, e.g. beams
    • 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
    • B29C44/35—Component parts; Details or accessories
    • B29C44/351—Means for preventing foam to leak out from the foaming device during foaming
    • 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
    • B29L2031/30—Vehicles, e.g. ships or aircraft, or body parts thereof
    • B29L2031/3005—Body finishings

Landscapes

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

Abstract

PURPOSE: A foaming mold for a crash pad of a vehicle is provided to reduce loss of foaming agent and leak removable process by restricting leakage of the foaming agent through the space part between the skin and the core, and to improve the quality of the product by applying sufficient pressure to the foaming agent. CONSTITUTION: A foaming mold for a crash pad of a vehicle is composed of a lower mold(20) mounting a skin(24) for forming the exterior of the crash pad, and an upper mold(10) mounting a core(14) used as a frame of the crash pad in the skin. The crash pad is manufactured by injecting the foaming agent between the skin and the core and forming. The foaming agent is pressed in the space part between the skin and the core by contacting the lower mold to the upper mold. Ribs(30a,30b) are protruded outward in the end of the core to close the end of the space part between the skin and the core.

Description

자동차의 크래쉬 패드용 발포금형{foaming metal mold for crash pad of au tomobile}Foaming metal mold for crash pad of a car

본 발명은 자동차의 크래쉬 패드용 발포금형에 관한 것으로, 보다 상세하게는 하부금형에 부착되어 크래쉬 패드의 외관을 형성하는 스킨과, 상부금형에 부착되어 크래쉬 패드의 골조 역할을 하는 코어 사이의 공간부 끝단을 통해 발포제가 누설되는 것을 방지하여 발포제의 손실 및 누액제거 공정을 감소시킬 수 있을 뿐만 아니라 발포제에 충분한 가압력이 가해지도록 하여 제품의 질을 향상시킬 수 있도록 하는 자동차의 크래쉬 패드용 발포금형에 관한 것이다.The present invention relates to a foam mold for a crash pad of an automobile, and more particularly, a space between a skin attached to a lower mold to form an appearance of the crash pad, and a core attached to the upper mold to serve as a frame of the crash pad. It is possible to reduce foaming agent loss and leakage removal process by preventing leakage of foaming agent through the end, and to provide foam mold for crash pads of automobiles to improve product quality by applying sufficient pressure to foaming agent. will be.

일반적으로 자동차의 내부에는 안락하고 쾌적하며 실용성 있는 실내환경을 조성하기 위한 각종 편의시설 및 안전 구조물이 장착되고 있다.In general, the interior of the vehicle is equipped with a variety of amenities and safety structures to create a comfortable, comfortable and practical indoor environment.

특히, 운전석의 전방에는 각종 지시계기 및 에어컨, 오디오 등을 조절하기 위한 스위치들이 장착되는데, 이같은 장치들이 미려한 외관을 가지고 설치되도록 함과 아울러 사고 등에 의한 승객의 충돌시에는 승객을 충돌로부터 안전하게 보호할 수 있도록 크래쉬 패드가 마련되어 있다.In particular, the front of the driver's seat is equipped with switches for controlling various indicators, air conditioners, audio, etc., such devices are installed with a beautiful appearance and to protect the passengers from collision in the event of an accident. Crash pads are provided for this purpose.

도 1은 자동차의 크래쉬 패드를 도시한 도면으로, 이러한 크래쉬 패드(1)로 최근에 각광받고 있는 것은 보통 발포 성형하여 자체적으로 탄성적인 쿠션을 제공함으로써, 어느 정도의 충격을 흡수할 수 있는 성질을 가지면서도 외관은 미려한 표면상태를 제공할 수 있도록 하는 형식이 널리 이용되고 있다.FIG. 1 is a view illustrating a crash pad of an automobile. In recent years, such a crash pad 1 is generally foamed to provide an elastic cushion on its own, thereby absorbing a certain degree of impact. In addition to having a beautiful surface appearance with a form that is widely used.

도 2는 종래 자동차의 크래쉬 패드용 발포금형을 도시한 단면도로서, 도면에 도시된 바와 같이 크래쉬 패드용 발포금형은 상부금형(10)과 하부금형(20)으로 나뉘어진다.Figure 2 is a cross-sectional view showing a foam mold for a crash pad of a conventional vehicle, as shown in the Figure foam mold for a crash pad is divided into an upper mold 10 and a lower mold (20).

상기 하부금형(20)에는 스킨전주금형에서 미리 만들어진 스킨(skin; 24)이 부착되고, 제품의 구조적 안정성을 보강하기 위해 미리 별도 제작된 코어(14)가 상기 상부금형(10)에 부착된 상태에서, 상기 스킨(24)과 코어(14) 사이에 형성된 공간부(18)에 폴리우레탄 등의 발포제를 주입하여 발포 성형하게 된다.The lower mold 20 has a skin 24 pre-made in the skin pre-molding mold, and a core 14, which is prepared separately, is attached to the upper mold 10 to reinforce structural stability of the product. In this case, a foaming agent such as polyurethane is injected into the space portion 18 formed between the skin 24 and the core 14 to perform foam molding.

상기 스킨(24)과 코어(14) 사이의 공간부(18)에 발포제를 주입한 뒤 상부금형(10)과 하부금형(20)을 밀착시켜 가압하게 되며, 가압 작업 후 일정시간이 지난 다음 탈형작업을 함으로써 크래쉬 패드(1)를 완성하게 된다.After the blowing agent is injected into the space 18 between the skin 24 and the core 14, the upper mold 10 and the lower mold 20 are pressed in close contact with each other and pressurized. By working, the crash pad 1 is completed.

이때, 상기 스킨(24)은 크래쉬 패드(1)의 미려한 외관을 형성하고, 상기 코어(14)는 상기 스킨(24)의 내측에서 크래쉬 패드(1)의 골조 역할을 하게 된다.In this case, the skin 24 forms a beautiful appearance of the crash pad 1, and the core 14 serves as a frame of the crash pad 1 inside the skin 24.

그러나, 상기한 바와 같이 상부금형(10)과 하부금형(20)에 코어(14)와 스킨(24)이 각각 부착된 종래 크래쉬 패드용 발포금형에 의하면, 코어(14)와 스킨(24) 사이의 공간부(18)에 발포제를 주입한 후 가압하는 과정에서, 코어(14)와 스킨(24) 사이의 공간부 끝단을 통해 발포제가 외부로 누설되어 발포제의 손실이 발생할 뿐만 아니라 발포제에 충분한 가압력이 제공되지 않아 제품에 공동(空洞 ;void)이 발생하여 제품의 질이 떨어지는 문제점이 있었다.However, according to the conventional crash pad foam mold having the core 14 and the skin 24 attached to the upper mold 10 and the lower mold 20 as described above, between the core 14 and the skin 24. In the process of pressurizing and then injecting the foaming agent into the space 18 of the foaming agent, the foaming agent leaks to the outside through the space end between the core 14 and the skin 24 not only causes a loss of the foaming agent but also a sufficient pressing force on the foaming agent. There is a problem in that the quality of the product is poor because the void (void) occurs in the product is not provided.

이에 본 발명은 상기와 같은 문제점들을 해소하기 위해 안출된 것으로서, 본 발명의 목적은 스킨과 코어 사이의 공간부 끝단을 통해 발포제가 누설되는 것을 방지하여 발포제의 손실 및 누액제거 공정을 감소시킬 수 있을 뿐만 아니라 발포제에 충분한 가압력이 가해지도록 하여 제품의 질을 향상시킬 수 있는 자동차의 크래쉬 패드용 발포금형을 제공하는데 있다.Accordingly, the present invention has been made to solve the above problems, the object of the present invention is to prevent the blowing agent is leaked through the space end between the skin and the core to reduce the loss of the blowing agent and leakage process In addition, to provide a foam mold for a crash pad of a vehicle that can improve the quality of the product by applying a sufficient pressure to the blowing agent.

도 1은 자동차의 크래쉬 패드를 도시한 도면,1 illustrates a crash pad of a vehicle;

도 2는 종래 자동차의 크래쉬 패드용 발포금형을 도시한 단면도,2 is a cross-sectional view showing a foam mold for a crash pad of a conventional vehicle,

도 3은 본 발명에 따른 자동차의 크래쉬 패드용 발포금형을 도시한 단면도.3 is a cross-sectional view showing a foam mold for a crash pad of a vehicle according to the present invention.

*도면의 주요부분에 대한 부호의 설명** Description of the symbols for the main parts of the drawings *

1 : 크래쉬 패드 10 : 상부금형1 crash pad 10 upper mold

14 : 코어 20 : 하부금형14 core 20 lower mold

24 : 스킨 30a,30b : 리브24: skin 30a, 30b: rib

상기와 같은 목적을 달성하기 위한 본 발명은, 크래쉬 패드의 외관을 형성하는 스킨이 부착된 하부금형과, 상기 스킨의 내측에서 크래쉬 패드의 골조 역할을 하는 코어가 부착된 상부금형으로 나뉘어져 상기 스킨과 코어 사이의 공간부에 발포제를 주입하여 발포 성형함으로써 크래쉬 패드가 제작될 수 있도록 이루어진 자동차의 크래쉬 패드용 발포금형에 있어서,The present invention for achieving the above object, the skin is divided into a lower mold is attached to the skin forming the appearance of the crash pad, the upper mold is attached to the core serving as a skeleton of the crash pad in the skin and the skin and In the foam pad for a crash pad of an automobile made by forming a crash pad by injecting a blowing agent into the space between the core and foam molding,

상기 스킨과 코어 사이의 공간부 끝단을 밀폐할 수 있도록 상기 코어의 끝단부에 리브가 외부로 돌출 형성되는 것을 특징으로 하는 자동차의 크래쉬 패드용 발포금형을 제공한다.Provided is a foam mold for a crash pad of a vehicle, characterized in that the rib is protruded to the outside of the end portion of the core to seal the end of the space between the skin and the core.

이하, 첨부한 도면을 참조하여 본 발명의 바람직한 실시예에 대해 상세하게 설명하도록 한다.Hereinafter, exemplary embodiments of the present invention will be described in detail with reference to the accompanying drawings.

이때, 종래의 기술과 동일 또는 유사한 구성요소에 대해서는 동일 또는 유사한 명칭을 부여하고 그 자세한 설명은 생략하기로 한다.In this case, the same or similar names are assigned to the same or similar elements as the related art, and detailed description thereof will be omitted.

도 3은 본 발명에 따른 자동차의 크래쉬 패드용 발포금형을 도시한 단면도이다.3 is a cross-sectional view showing a foam mold for a crash pad of a vehicle according to the present invention.

먼저, 종래 기술과 연계하여 본 발명에 따른 자동차의 크래쉬 패드용 발포금형은 상부금형(10)과 하부금형(20)으로 나뉘어지며, 상기 하부금형(20)에는 크래쉬 패드의 외관을 형성하는 스킨(24)이 부착되고, 상기 상부금형(10)에는 상기 스킨(24)의 내측에서 크래쉬 패드의 골조 역할을 코어(14)가 부착된다.First, the foam mold for a crash pad of a vehicle according to the present invention in connection with the prior art is divided into an upper mold 10 and a lower mold 20, the lower mold 20 has a skin forming the appearance of the crash pad ( 24 is attached, the core 14 is attached to the upper mold 10 to serve as a skeleton of the crash pad inside the skin (24).

상기 스킨(24)과 코어(14) 사이의 공간부(18)에 폴리우레탄과 같은 발포제를주입한 후 상기 상부금형(10)과 하부금형(20)을 밀착시켜 가압해줌으로써 자체적으로 탄성력을 갖는 크래쉬 패드가 완성된다.After injecting a foaming agent such as polyurethane into the space 18 between the skin 24 and the core 14, the upper mold 10 and the lower mold 20 in close contact and pressurized to have an elastic force by itself The crash pad is complete.

이때, 본 발명은 상기 코어(14)의 끝단부에 발포제의 누액차단을 위한 리브(30a,30b)가 형성되는 것을 요지로 한다.At this time, the present invention has the gist of the ribs (30a, 30b) for blocking the leakage of the blowing agent is formed at the end of the core (14).

상기 리브(30a,30b)는 코어(14)의 끝단부에서 상기 스킨(24)과 마주보게 되는 면상에서 외부로 돌출 형성되며, 코어(14) 제작시 일체로 형성되거나 코어(14) 제작 후 별도로 부착될 수도 있다.The ribs 30a and 30b are formed to protrude outward from the surface facing the skin 24 at the end of the core 14, and are formed integrally when the core 14 is manufactured or separately after the core 14 is manufactured. It may be attached.

이하, 본 발명의 작용 및 효과를 상세하게 설명하도록 한다.Hereinafter, the operation and effects of the present invention will be described in detail.

상기한 바와 같이, 본 발명에 따른 자동차의 크래쉬 패드용 발포금형은 스킨(24)과 코어(14) 사이의 공간부(18) 끝단을 밀폐할 수 있도록 상기 코어(14)의 끝단부에 리브(30a,30b)가 외부로 돌출 형성된다.As described above, the foam mold for a crash pad of a vehicle according to the present invention has a rib at the end of the core 14 so as to seal the end of the space 18 between the skin 24 and the core 14. 30a and 30b are formed to protrude outward.

이와 같이 구성된 상태에서, 크래쉬 패드를 제작하기 위해서 하부금형(20)에 부착된 스킨(24)과, 상부금형(10)에 부착된 코어(14)가 서로 대향하여 마주보도록 위치시킨 상태에서 상기 스킨(24)과 코어(14) 사이의 공간부(18)에 폴리우레탄 등의 발포제를 충진시키게 된다.In the state configured as described above, the skin 24 attached to the lower mold 20 and the core 14 attached to the upper mold 10 face each other to face each other in order to produce a crash pad. The space 18 between the core 24 and the core 14 is filled with a blowing agent such as polyurethane.

그리고, 계속해서 상기 하부금형(20)과 상부금형(10)을 서로 밀착시켜 상기 스킨(24)과 코어(14) 사이의 공간부(18)에 충진된 발포제를 가압하게 되는데, 이 과정에서 상기 코어(14)의 끝단부에서 외부로 돌출 형성된 리브(30a,30b)가 공간부(18)의 끝단을 밀폐하게 된다.Subsequently, the lower mold 20 and the upper mold 10 are brought into close contact with each other to pressurize the blowing agent filled in the space 18 between the skin 24 and the core 14. Ribs 30a and 30b protruding outward from the ends of the core 14 seal the ends of the space 18.

그러므로, 상기 스킨(24)과 코어(14) 사이의 공간부(18)에 충진된 발포제가공간부(18)의 끝단을 통해 외부로 누설되는 것을 방지하여 별도의 누액제거 공정을 필요치 않게 될 뿐만 아니라, 상기 코어(14)와 발포제 사이의 밀착력을 높여 탈형을 위한 이형제의 사용량을 감소시킬 수 있게 된다.Therefore, the foaming agent filled in the space 18 between the skin 24 and the core 14 is prevented from leaking to the outside through the end of the space 18 so that a separate leakage removal process is not necessary. In addition, by increasing the adhesion between the core 14 and the blowing agent it is possible to reduce the amount of the release agent for demolding.

또한, 하부금형(20)과 상부금형(10)이 밀착되면서 발포제에 충분한 가압력이 가해지게 되어 제품의 질이 향상되게 된다.In addition, as the lower mold 20 and the upper mold 10 are in close contact with each other, sufficient pressure is applied to the blowing agent, thereby improving the quality of the product.

상기한 바와 같이 본 발명에 따른 자동차의 크래쉬 패드용 발포금형에 의하면, 스킨과 코어 사이의 공간부 끝단을 통해 발포제가 누설되는 것을 방지하여 발포제의 손실 및 누액제거 공정을 감소시킬 수 있을 뿐만 아니라 발포제에 충분한 가압력이 가해지도록 하여 제품의 질을 향상시킬 수 있는 효과가 있다.As described above, according to the foam mold for a crash pad of an automobile according to the present invention, the foaming agent is prevented from leaking through the end of the space between the skin and the core, thereby reducing the loss of the foaming agent and the leakage removing process as well as the foaming agent. Enough pressure is applied to the product to improve the quality of the product.

Claims (1)

크래쉬 패드의 외관을 형성하는 스킨이 부착된 하부금형과, 상기 스킨의 내측에서 크래쉬 패드의 골조 역할을 하는 코어가 부착된 상부금형으로 나뉘어져 상기 스킨과 코어 사이의 공간부에 발포제를 주입하여 발포 성형함으로써 크래쉬 패드가 제작될 수 있도록 이루어진 자동차의 크래쉬 패드용 발포금형에 있어서,The mold is divided into a lower mold with a skin to form the exterior of the crash pad, and an upper mold with a core attached to the inside of the skin, and foamed by injecting a foaming agent into the space between the skin and the core. In the foam pad for a crash pad of an automobile made so that the crash pad can be produced, 상기 스킨과 코어 사이의 공간부 끝단을 밀폐할 수 있도록 상기 코어의 끝단부에 리브가 외부로 돌출 형성되는 것을 특징으로 하는 자동차의 크래쉬 패드용 발포금형.The foam mold for a crash pad of a vehicle, characterized in that the rib protrudes outwardly so as to seal the end of the space between the skin and the core.
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Cited By (4)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
KR100811534B1 (en) * 2006-12-06 2008-03-07 문영택 Strike of door lock
KR20130132190A (en) * 2012-05-25 2013-12-04 현대자동차주식회사 Apparatus and method for manufacturing crash pad
US9364971B2 (en) 2012-12-18 2016-06-14 Hyundai Motor Company Sealing apparatus and method of foam injection mold
US9623639B2 (en) 2014-12-09 2017-04-18 Hyundai Motor Company Open core crash pad and process for manufacturing thereof

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JPS5757921U (en) * 1980-09-19 1982-04-05
JPS5759731A (en) * 1980-09-27 1982-04-10 Nissan Motor Co Ltd Preparation of foamed molded product
JPS62144910A (en) * 1985-12-19 1987-06-29 Inoue Mtp Co Ltd Manufacture of plastic component with cushioning function
JPH01174420A (en) * 1987-12-29 1989-07-11 Tokyo Seat Kk Manufacture of cushioning foam
JPH0236913A (en) * 1988-07-26 1990-02-06 Ikeda Bussan Co Ltd Monolithic molding method for skin material and pad material

Patent Citations (5)

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Publication number Priority date Publication date Assignee Title
JPS5757921U (en) * 1980-09-19 1982-04-05
JPS5759731A (en) * 1980-09-27 1982-04-10 Nissan Motor Co Ltd Preparation of foamed molded product
JPS62144910A (en) * 1985-12-19 1987-06-29 Inoue Mtp Co Ltd Manufacture of plastic component with cushioning function
JPH01174420A (en) * 1987-12-29 1989-07-11 Tokyo Seat Kk Manufacture of cushioning foam
JPH0236913A (en) * 1988-07-26 1990-02-06 Ikeda Bussan Co Ltd Monolithic molding method for skin material and pad material

Cited By (6)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
KR100811534B1 (en) * 2006-12-06 2008-03-07 문영택 Strike of door lock
KR20130132190A (en) * 2012-05-25 2013-12-04 현대자동차주식회사 Apparatus and method for manufacturing crash pad
US9511522B2 (en) 2012-05-25 2016-12-06 Hyundai Motor Company Apparatus and method for manufacturing crash pad
US9889584B2 (en) 2012-05-25 2018-02-13 Hyundai Motor Company Apparatus and method for manufacturing crash pad
US9364971B2 (en) 2012-12-18 2016-06-14 Hyundai Motor Company Sealing apparatus and method of foam injection mold
US9623639B2 (en) 2014-12-09 2017-04-18 Hyundai Motor Company Open core crash pad and process for manufacturing thereof

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