KR100803337B1 - Structural parts for vehicle and method for producing the same - Google Patents

Structural parts for vehicle and method for producing the same Download PDF

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Publication number
KR100803337B1
KR100803337B1 KR1020060102421A KR20060102421A KR100803337B1 KR 100803337 B1 KR100803337 B1 KR 100803337B1 KR 1020060102421 A KR1020060102421 A KR 1020060102421A KR 20060102421 A KR20060102421 A KR 20060102421A KR 100803337 B1 KR100803337 B1 KR 100803337B1
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KR
South Korea
Prior art keywords
composite
mold
cover sheet
composite body
polypropylene resin
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KR1020060102421A
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Korean (ko)
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공용식
변유석
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한화엘앤씨 주식회사
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    • B—PERFORMING OPERATIONS; TRANSPORTING
    • B60—VEHICLES IN GENERAL
    • B60R—VEHICLES, VEHICLE FITTINGS, OR VEHICLE PARTS, NOT OTHERWISE PROVIDED FOR
    • B60R13/00—Elements for body-finishing, identifying, or decorating; Arrangements or adaptations for advertising purposes
    • B60R13/02—Internal Trim mouldings ; Internal Ledges; Wall liners for passenger compartments; Roof liners
    • 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
    • B29C51/00—Shaping by thermoforming, i.e. shaping sheets or sheet like preforms after heating, e.g. shaping sheets in matched moulds or by deep-drawing; Apparatus therefor
    • B29C51/08—Deep drawing or matched-mould forming, i.e. using mechanical means only
    • B29C51/082—Deep drawing or matched-mould forming, i.e. using mechanical means only by shaping between complementary mould parts
    • 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
    • B29C51/00—Shaping by thermoforming, i.e. shaping sheets or sheet like preforms after heating, e.g. shaping sheets in matched moulds or by deep-drawing; Apparatus therefor
    • B29C51/14—Shaping by thermoforming, i.e. shaping sheets or sheet like preforms after heating, e.g. shaping sheets in matched moulds or by deep-drawing; Apparatus therefor using multilayered preforms or sheets
    • B29C51/145—Shaping by thermoforming, i.e. shaping sheets or sheet like preforms after heating, e.g. shaping sheets in matched moulds or by deep-drawing; Apparatus therefor using multilayered preforms or sheets having at least one layer of textile or fibrous material combined with at least one plastics layer
    • 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
    • B29L2031/3008—Instrument panels

Abstract

Structural parts for a vehicle and a method for producing the same are provided to achieve aesthetic enhancement by preventing formation of a sink mark and to reduce costs by eliminating the necessity of an adhesive. A method for producing structural parts for a vehicle includes a step(S10) of forming a composite body by applying polypropylene resin on and beneath a mat which is formed by needling long glass fiber and hardening the mixture of long glass fiber and polypropylene resin, a step of softening the composite body through heat treatment and making the composite body into a dough, a step of cutting the composite body into the size and thickness corresponding to the shape of an objective structure, a step of sequentially stacking the composite body and a cover sheet onto a lower mold, and a step(S30) of pressing an upper mold against the lower mold. The composite body is spread all over the inside of the mold by pressing.

Description

차량용 구조품 및 그 제조방법{Structural parts for vehicle and Method for producing the same}Structural parts for vehicle and Method for producing the same

도 1은 본 발명에 따른 제조방법을 나타내는 플로차트이다.1 is a flowchart showing a manufacturing method according to the present invention.

도 2는 금형 내에서 구조품을 성형하는 단계를 설명하는 공정도이다.2 is a process diagram illustrating the steps of forming a structural product in a mold.

본 발명은 차량용 구조품 및 그 제조방법에 관한 것으로, 특히 미려한 외관을 제공하여 제품의 품위를 높일 수 있는 차량용 구조품 및 그 제조방법에 관련한다. BACKGROUND OF THE INVENTION 1. Field of the Invention The present invention relates to a vehicle structural part and a method of manufacturing the same, and more particularly, to a vehicle structural part and a method of manufacturing the same, which provide a beautiful appearance to enhance a product.

차량용 구조품 중에서, 리어 시트 패널과 같이 사용자의 육안으로 볼 수 있는 부분에 설치되는 구조품은 특히 제품 외관의 품질이 중요하다. Among the structural products for vehicles, structural products installed in a part which is visible to the naked eye such as a rear seat panel are particularly important for the quality of the product appearance.

종래에 긴 유리섬유(long glass fiber)와 폴리프로필렌 수지를 혼합한 복합소재를 이용하여 구조품을 제조하는 다양한 방법이 있었다.Conventionally, there have been various methods of manufacturing structural products using a composite material in which a long glass fiber and a polypropylene resin are mixed.

예를 들어, 커버 시트를 접착제를 개재하여 상기 복합소재로 성형된 제품에 접착하는 방법이 있다. 그러나, 이러한 제조방법에 의하면, 접착제 사용에 따른 제 조원가의 증가와 작업환경의 오염이 문제점으로 대두하였다.For example, there is a method of adhering a cover sheet to a product molded from the composite material through an adhesive. However, according to this manufacturing method, the increase in manufacturing cost and pollution of the working environment due to the use of the adhesive has emerged as problems.

또한, 금형 표면에 엠보싱을 형성하여 상기 복합소재의 제품 표면에 무늬를 넣는 금형 엠보싱 가공방법이 있다. 그러나, 이 방법의 경우, 금형을 추가 가공해야하므로 비용이 발생하고, 구조품이 경사지고 굴곡이 깊은 부분을 포함하는 경우에는 적용하기가 어렵다는 문제점이 있다.In addition, there is a mold embossing method for forming a pattern on the surface of the product of the composite material by forming embossing on the mold surface. However, this method has a problem in that it requires a further processing of the mold, so that the cost is incurred, and it is difficult to apply when the structural part is inclined and includes a deep curved portion.

또한, 제조된 구조품에 있어서, 제품 표면이 특히 리브(rib)에서 두께방향으로 수축하는 싱크 마크(sink mark)가 발생하여 제품의 외관의 품질을 저하한다.In addition, in the manufactured structure, a sink mark occurs in which the surface of the product contracts in the thickness direction, particularly in ribs, thereby degrading the quality of the appearance of the product.

따라서, 본 발명은 이러한 종래의 문제점을 해결하기 위하여 제안되는 것으로, 본 발명의 목적은 미려한 외관을 제공하여 제품의 품위를 높일 수 있는 차량용 구조품 및 그 제조방법을 제공하는 것이다.Accordingly, the present invention has been proposed to solve such a conventional problem, and an object of the present invention is to provide a vehicle structural member and a method of manufacturing the same, which can enhance the product quality by providing a beautiful appearance.

본 발명의 다른 목적과 특징 및 이점은 바람직한 실시예를 통하여 명확하게 이해될 것이다.Other objects, features and advantages of the present invention will be apparent from the preferred embodiments.

상기한 목적은, 긴 유리섬유(long glass fiber)를 니들링하여 형성한 매트의 상하면에 폴리프로필렌 수지를 도포하고 압축하여 상기 유리섬유와 폴리프로필렌 수지를 혼합한 후 경화하여 복합체를 형성하는 단계; 상기 복합체를 열처리하여 연화시키는 단계; 상기 연화 복합체를 대상 구조품의 형상에 대응하는 크기 및 두께로 상기 복합체를 절단 및 적층하는 단계; 상기 대상 구조품을 위한 하부금형 위에 상기 연화된 복합체와 커버 시트를 순차 적층하는 단계; 및 상기 하부금형에 대해 상부금형을 가압하는 단계를 포함하며, 상기 연화된 복합체는 상기 가압에 의해 흘러 상기 금형 내부에 퍼지는 차량용 구조품의 제조방법에 의해 달성된다.The above object is to apply a polypropylene resin to the upper and lower surfaces of the mat formed by needling long glass fibers and compresses to form a composite by mixing and curing the glass fiber and polypropylene resin; Heat treating the composite to soften it; Cutting and laminating the softened composite to a size and thickness corresponding to the shape of the target structure; Sequentially stacking the softened composite and the cover sheet on a lower mold for the object structure; And pressurizing the upper mold against the lower mold, wherein the softened composite flows by the pressing and is achieved by a method of manufacturing a vehicle structural part that is spread within the mold.

바람직하게, 상기 커버 시트는 상기 가압에 의해 상기 복합체가 삐져나오지 않는 재질로 이루어질 수 있으며, 더 바람직하게, 상기 커버 시트는 폴리에틸렌텔레프탈레이트(PET) 또는 패브릭(fabric)으로 이루어질 수 있다.Preferably, the cover sheet may be made of a material in which the composite does not stick out by the pressing, and more preferably, the cover sheet may be made of polyethylene terephthalate (PET) or a fabric.

상기한 목적은, 긴 유리섬유(long glass fiber)를 니들링하여 형성한 매트의 상하면에 폴리프로필렌 수지를 도포하고 압착하여 형성한 복합체를 열처리하여 연화시킨 다음 대상 구조품의 형상에 대응하는 크기 및 두께로 가공한 후, 커버 시트와 함께 금형 내부에 넣고 일체로 가압하여 상기 연화된 복합체가 상기 금형 내부에 흘러 퍼지도록 함과 동시에 상기 커버 시트가 상기 복합체에 접착되도록 한 차량용 구조품에 의해 달성될 수 있다.The above object is to soften by heat-treating the composite formed by coating and pressing polypropylene resin on the upper and lower surfaces of the mat formed by needling long glass fiber, and then the size and thickness corresponding to the shape of the target structure After processing into a mold, it can be achieved by a vehicle structure in which the softened composite flows into the mold and is integrally pressed into the mold together with the cover sheet to allow the cover sheet to adhere to the composite. have.

이하, 본 발명에 대해 첨부된 도면을 참조하여 상세하게 설명한다.Hereinafter, with reference to the accompanying drawings for the present invention will be described in detail.

도 1은 본 발명에 따른 제조방법을 나타내는 플로차트이고, 도 2는 금형 내에서 구조품을 성형하는 단계를 설명하는 공정도이다.1 is a flowchart showing a manufacturing method according to the present invention, Figure 2 is a process diagram illustrating the step of forming a structural product in a mold.

도 1을 참조하면, 본 발명의 제조방법은 크게 복합체 형성 단계(S10), 복합체 가공 단계(S20), 및 성형 단계(S30)로 이루어지며, 성형시 복합체의 흐름이 발생하도록 하는 것에 기술적 특징이 있다.Referring to Figure 1, the manufacturing method of the present invention is largely made of a composite forming step (S10), a composite processing step (S20), and a forming step (S30), the technical characteristics of causing the flow of the composite during molding have.

복합체 형성 단계(Complex formation step ( S10S10 ))

긴 유리섬유(long glass fiber)를 니들 펀치를 이용하여 니들링하여 일정한 두께를 갖는 매트 형상으로 연속 가공한다.Long glass fibers are needled using a needle punch and continuously processed into a mat shape having a constant thickness.

이 매트를 이송하면서, 그 상하면에 폴리프로필렌 수지를 도포하고 압착하여 유리섬유와 폴리프로필렌 수지를 혼합한 후 경화하여 복합체를 형성한다. 따라서, 최종 제조된 복합체는 유리섬유와 폴리프로필렌 수지가 서로 섞여 혼합된 상태로 압착되어 일정한 강도를 갖는 플레이트 형상을 갖는다.While conveying this mat, the polypropylene resin is apply | coated on the upper and lower surfaces, it crimps | mixes, glass fiber and a polypropylene resin are mixed, and it hardens | cures and forms a composite. Therefore, the final composite is compressed in a state in which the glass fiber and the polypropylene resin is mixed with each other to have a plate shape having a constant strength.

복합체 가공 단계(Composite processing step S20S20 ))

이와 같이 제조된 복합체를 이용하여 구조품을 만들기 전에 복합체를 가공한다. 다시 말해, 제조하고자 하는 차량용 구조품의 종류에 따라 구조품의 형상이 다르고 사용되는 복합체의 양이 다르기 때문에 이러한 가공 단계가 필요하다.The composite is processed before making the structure using the composite thus prepared. In other words, such a processing step is necessary because the shape of the structure is different and the amount of the composite used is different according to the type of vehicle structure to be manufactured.

이를 위해, 먼저 복합체를 열처리하여 연화시킨 다음, 대상 구조품의 형상에 대응하는 크기로 복합체를 절단하고 필요에 따라 부분적으로 복합체를 적층한다. 여기서, 연화라 함은 복합체가 가압에 의해 흐를 수 있는 반죽(dough) 상태를 말한다.To this end, the composite is first heat treated to soften it, and then the composite is cut to a size corresponding to the shape of the target structure, and the composite is partially laminated as necessary. Here, the softening refers to the dough (dough) state that the composite can flow by pressing.

성형 단계(Forming step ( S30S30 ))

상기한 바와 같이, 기설정된 크기와 두께로 가공된 연화 복합체와 커버 시트를 금형 내에 넣고 가압하여 구조품을 제조한다.As described above, the softened composite and the cover sheet processed to a predetermined size and thickness are put into a mold and pressed to produce a structural product.

도 2를 참조하면, 표면이 일정한 형상으로 가공된 하부 금형(20) 위에 복합체(30)를 놓고 그 위에 커버 시트(40)를 놓은 다음 표면이 일정한 형상으로 가공된 상부 금형(10)을 하강시켜 하부 금형(30)에 대해 가압한다. Referring to FIG. 2, the composite 30 is placed on a lower mold 20 whose surface is processed into a uniform shape, a cover sheet 40 is placed thereon, and the upper mold 10 whose surface is processed into a uniform shape is lowered. Pressing against the lower mold 30.

커버 시트(40)로는 상기한 가압에 의해 금형 내부를 흐르는 복합체가 삐져나오지 않는 재질이면 충분하며, 예를 들어, 폴리에틸렌텔레프탈레이트(PET) 또는 패브릭(fabric)으로 이루어질 수 있다.The cover sheet 40 may be formed of a material in which the composite flowing through the mold does not stick out by the above-mentioned pressure, and may be made of, for example, polyethylene terephthalate (PET) or a fabric.

이와 같이 가압을 하게 되면, 복합체가 연화된 상태이기 때문에 흐름이 발생하여 금형 내부의 캐비티(cavity)를 충진하게 되며, 이와 함께, 커버 시트(40)는 복합체(30)에 융착 결합한다.When pressurized in this way, since the composite is in a softened state, a flow occurs to fill a cavity inside the mold, and the cover sheet 40 is fusion-bonded to the composite 30.

이와 같이 제조된 구조품은 싱크 마크가 생기지 않아 미려한 외관을 연출함으로써 제품의 품위를 높일 수 있다. 또한, 별도의 접착제를 사용하지 않으므로 제조원가가 저렴하고 작업환경의 오염을 방지할 수 있다. 특히, 제조공정이 간단하기 때문에 생산수율이 향상된다는 이점도 있다.The structure manufactured as described above does not generate a sink mark, thereby enhancing the appearance of the product by producing a beautiful appearance. In addition, since a separate adhesive is not used, manufacturing cost is low and pollution of the working environment can be prevented. In particular, there is an advantage that the production yield is improved because the manufacturing process is simple.

이상에서는 본 발명의 바람직한 실시예를 중심으로 설명하였지만 당업자의 수준에서 다양한 변경이 가능하다. 따라서, 본 발명의 권리범위는 상기한 실시예에 한정하여 해석되어서는 안 되며, 이하의 특허청구범위에 기초하여 해석되어야 한다.In the above description, but with reference to the preferred embodiment of the present invention various modifications are possible at the level of those skilled in the art. Therefore, the scope of the present invention should not be construed as being limited to the above embodiment, but should be interpreted based on the claims below.

본 발명에 따르면, 싱크 마크가 생기지 않아 미려한 외관을 연출함으로써 제품의 품위를 높일 수 있고, 별도의 접착제를 사용하지 않으므로 제조원가가 저렴하고 작업환경의 오염을 방지할 수 있으며, 제조공정이 간단하기 때문에 생산수율이 향상된다는 효과를 갖는다.According to the present invention, the appearance of the product can be improved by producing a beautiful appearance without generating a sink mark, and because no additional adhesive is used, the manufacturing cost is low and pollution of the working environment can be prevented, and the manufacturing process is simple. The production yield is improved.

Claims (4)

긴 유리섬유(long glass fiber)를 니들링하여 형성한 매트의 상하면에 폴리프로필렌 수지를 도포하고 압축하여 상기 유리섬유와 폴리프로필렌 수지를 혼합한 후 경화하여 복합체를 형성하는 단계;Applying a polypropylene resin to the upper and lower surfaces of the mat formed by needling long glass fibers and compressing the mixture to cure the glass fiber and the polypropylene resin to form a composite; 상기 복합체를 열처리로 연화시켜 반죽(dough)시키는 단계;Softening the composite by heat treatment to dough; 상기 연화된 복합체를 대상 구조품의 형상에 대응하는 크기 및 두께로 절단하여 준비하는 단계;Preparing the softened composite by cutting it to a size and thickness corresponding to the shape of the target structure; 상기 대상 구조품을 위한 하부금형 위에 상기 준비된 복합체와 커버 시트를 순차 적층하는 단계; 및Sequentially stacking the prepared composite and the cover sheet on a lower mold for the object structure; And 상기 하부금형에 대해 상부금형을 가압하는 단계를 포함하며,Pressing an upper mold against the lower mold, 상기 연화된 복합체는 상기 가압에 의해 흘러 상기 금형 내부에 퍼지는 것을 특징으로 하는 차량용 구조품의 제조방법.And said softened composite flows by said pressurization and spreads within said mold. 청구항 1에 있어서,The method according to claim 1, 상기 커버 시트는 상기 가압에 의해 상기 복합체가 삐져나오지 않는 재질로 이루어지는 것을 차량용 구조품의 제조방법.The cover sheet is a manufacturing method for a structural product for a vehicle made of a material that the composite does not stick out by the pressing. 청구항 2에 있어서,The method according to claim 2, 상기 커버 시트는 폴리에틸렌텔레프탈레이트(PET) 또는 패브릭(fabric)으로 이루어지는 것을 차량용 구조품의 제조방법.The cover sheet is made of polyethylene terephthalate (PET) or fabric (fabric) manufacturing method for a vehicle structural. 긴 유리섬유(long glass fiber)를 니들링하여 형성한 매트의 상하면에 폴리프로필렌 수지를 도포하고 압착 경화한 후 열처리로 연화된 상태에서 몰드 성형으로 형성된 복합체; 및A composite formed by molding a mold in a state in which a polypropylene resin is applied to the upper and lower surfaces of a mat formed by needling long glass fibers, press-cured and softened by heat treatment; And 상기 복합체의 표면에 부착된 커버 시트로 이루어지며,It consists of a cover sheet attached to the surface of the composite, 상기 커버 시트는, 상기 몰드 성형을 위한 금형 내에 상기 연화된 상태의 복합체의 표면에 놓인 상태에서 일체로 가압되어 상기 복합체에 접착된 것을 특징으로 하는 차량용 구조품.And the cover sheet is integrally pressed in the state of being placed on the surface of the composite of the softened state in the mold for molding the mold and adhered to the composite.
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Citations (1)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
KR0123475B1 (en) * 1992-12-28 1997-11-10 사토오 아키오 Ceiling material for vehicles and production process thereof

Patent Citations (1)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
KR0123475B1 (en) * 1992-12-28 1997-11-10 사토오 아키오 Ceiling material for vehicles and production process thereof

Non-Patent Citations (1)

* Cited by examiner, † Cited by third party
Title
등록특허공보 등록번호10-0123475호B1

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