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KR100795390B1 - Vehicle FRP hollow structure with overlapping structure and its manufacturing method - Google Patents

Vehicle FRP hollow structure with overlapping structure and its manufacturing method Download PDF

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KR100795390B1
KR100795390B1 KR1020070015943A KR20070015943A KR100795390B1 KR 100795390 B1 KR100795390 B1 KR 100795390B1 KR 1020070015943 A KR1020070015943 A KR 1020070015943A KR 20070015943 A KR20070015943 A KR 20070015943A KR 100795390 B1 KR100795390 B1 KR 100795390B1
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cover
lower cover
upper cover
mold
frp
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박용근
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    • B—PERFORMING OPERATIONS; TRANSPORTING
    • B60—VEHICLES IN GENERAL
    • B60P—VEHICLES ADAPTED FOR LOAD TRANSPORTATION OR TO TRANSPORT, TO CARRY, OR TO COMPRISE SPECIAL LOADS OR OBJECTS
    • B60P7/00—Securing or covering of load on vehicles
    • B60P7/02—Covering of load
    • 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
    • B29C65/00—Joining or sealing of preformed parts, e.g. welding of plastics materials; Apparatus therefor
    • B29C65/78—Means for handling the parts to be joined, e.g. for making containers or hollow articles, e.g. means for handling sheets, plates, web-like materials, tubular articles, hollow articles or elements to be joined therewith; Means for discharging the joined articles from the joining apparatus
    • B29C65/7802—Positioning the parts to be joined, e.g. aligning, indexing or centring
    • B29C65/7838—Positioning the parts to be joined, e.g. aligning, indexing or centring from the inside, e.g. of tubular or hollow articles
    • B—PERFORMING OPERATIONS; TRANSPORTING
    • B60—VEHICLES IN GENERAL
    • B60Y—INDEXING SCHEME RELATING TO ASPECTS CROSS-CUTTING VEHICLE TECHNOLOGY
    • B60Y2200/00—Type of vehicle
    • B60Y2200/10—Road Vehicles
    • B60Y2200/14—Trucks; Load vehicles, Busses
    • B60Y2200/145—Haulage vehicles, trailing trucks
    • B—PERFORMING OPERATIONS; TRANSPORTING
    • B60—VEHICLES IN GENERAL
    • B60Y—INDEXING SCHEME RELATING TO ASPECTS CROSS-CUTTING VEHICLE TECHNOLOGY
    • B60Y2410/00—Constructional features of vehicle sub-units
    • B60Y2410/12—Production or manufacturing of vehicle parts

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

Abstract

본 발명은 차량용 FRP 중공형 구조물에 관한 것으로 특히, 상부커버의 천정면 및 측면에 관한 외관에 대응하는 형상을 음각으로 갖는 상부형틀을 구비하는 제 1단계와; 하부커버의 바닥면에 대응하는 형상이 구비되며 하부커버의 바닥면에 대응하는 형상의 내부 임의의 위치에 상부커버의 측면 형상에 대응하여 임의의 각도로 돌출되어진 돌출부를 갖는 하부형틀을 구비하는 제 2단계와; 제 1단계와 제 2단계를 통해 구비되어진 형틀의 성형부에 FRP를 여러겹 도포하여 일정두께를 이루도록 상부커버 및 하부커버를 성형하는 제 3단계와; 제 3단계를 통해 성형되어진 상부커버 및 하부커버가 경화되기 전에 상부커버의 내측면이 하부커버의 외측면에 밀착되도록 상부형틀을 하부형틀의 상부에 씌우는 제 4단계; 및 제 4단계를 통해 상부커버와 하부커버가 결합한 후 경화되어지면 상부형틀과 하부형틀로부터 성형된 중공형 구조물을 탈거하는 제 5단계를 포함하는 겹침 구조를 갖는 차량용 FRP 중공형 구조물 제조방법 및 그에 따른 구조물을 제공하면, 상부커버와 하부커버의 측면부가 겹침구조를 갖도록 구성되어 별도의 연결보강부 없이도 상부커버와 하부커버의 접합면적을 최대화할 수 있어 접합강도를 보강할 수 있도록 함과 동시에 보조수단 없이도 하부커버 생성시키며, 압입 접착면에 대한 사포공정과 같은 별도의 공정을 수행하지 않더라도 접합율 100%를 유지할 수 있어 크게 작업공수 및 생산비용을 감소시키게 된다.The present invention relates to a vehicle FRP hollow structure, in particular, a first step having an upper mold having a shape corresponding to the appearance of the ceiling surface and the side of the upper cover at an intaglio; A lower frame having a shape corresponding to the bottom surface of the lower cover and having a protrusion protruding at an arbitrary angle corresponding to the side shape of the upper cover at an arbitrary position inside the shape corresponding to the bottom surface of the lower cover. Step 2; A third step of forming an upper cover and a lower cover to form a predetermined thickness by applying multiple layers of FRP to the molding part of the mold provided through the first and second steps; A fourth step of covering the upper mold on the upper part of the lower mold so that the inner surface of the upper cover is in close contact with the outer surface of the lower cover before the upper cover and the lower cover formed through the third step are cured; And a fifth step of removing the hollow structure formed from the upper mold and the lower mold when the upper cover and the lower cover are combined and hardened through the fourth step, and a method for manufacturing a vehicle FRP hollow structure having an overlapping structure therefor. Providing the structure according to the above, the side of the upper cover and the lower cover is configured to have an overlapping structure to maximize the joint area of the upper cover and the lower cover without a separate connecting reinforcement to reinforce the bonding strength and at the same time It generates the bottom cover without the means, and can maintain 100% of the bonding rate even if a separate process such as sanding process for the press-fitting adhesive surface can greatly reduce labor and production cost.

Description

겹침 구조를 갖는 차량용 ＦＲＰ 중공형 구조물 및 그 제조방법{Box type hollow structure made of FRP with overlap construction for vehicle and manufacturing method thereof}Box type hollow structure made of FRP with overlap construction for vehicle and manufacturing method

도 1은 종래 차량용 FRP 중공형 구조물의 단면 예시도1 is a cross-sectional view of a conventional vehicle FRP hollow structure

도 2는 근래 제안되어진 차량용 FRP 중공형 구조물의 제조 공정 예시도Figure 2 is an exemplary process of manufacturing a vehicle FRP hollow structure has been proposed recently

도 3은 본 발명에 따른 겹침 구조를 갖는 차량용 FRP 중공형 구조물의 제조 공정 예시도Figure 3 is an illustration of the manufacturing process of the vehicle FRP hollow structure having an overlapping structure according to the present invention

도 4와 도 5는 본 발명에 따른 겹침 구조를 갖는 차량용 FRP 중공형 구조물 성형을 위한 상하부형틀의 예시도4 and 5 is an illustration of the upper and lower molds for forming a vehicle FRP hollow structure having an overlapping structure according to the present invention

본 발명은 차량용 FRP 중공형 구조물에 관한 것으로 특히, 상부커버와 하부커버의 측면부가 겹침구조를 갖도록 구성되어 별도의 연결보강부 없이도 상부커버와 하부커버의 접합면적을 최대화할 수 있어 접합강도를 보강할 수 있도록 함과 동시에 보 조수단 없이도 하부커버 생성시키도록 하기 위한 겹침 구조를 갖는 차량용 FRP 중공형 구조물 및 그 제조방법에 관한 것이다.The present invention relates to a vehicle FRP hollow structure, in particular, the side portion of the upper cover and the lower cover is configured to have an overlapping structure to maximize the joint area of the upper cover and the lower cover without a separate connecting reinforcement to reinforce the bonding strength The present invention relates to a vehicle FRP hollow structure having an overlapping structure for producing a lower cover without an auxiliary means and at the same time, and a method of manufacturing the same.

일반적으로, 화물차량은 운전실과 적재함으로 구분할 수 있으며, 운전실의 상부 또는 후방에 중공형 구조물이 설치되고 있다.In general, a cargo vehicle can be classified into a cab and a loading bin, and a hollow structure is installed at the top or the rear of the cab.

상술한 중공형 구조물은 화물차량의 주행시 운전실의 후방에서 발생되는 공기의 와류현상에 의한 차체의 후방쏠림을 방지함과 동시에 적재된 화물 및 차량의 공기저항을 감소시켜 차량의 안전운행을 확보하기 위한 것으로, 운전실의 후방에 설치되는 중공형 구조물의 경우, 통상의 FRP 공법으로 제작되는 중공형 구조물은 첨부한 도 1에 도시되어 있는 바와 같이 상부커버(2)와 하부커버(1)로 구성되고, 상기 상부커버(2)와 하부커버(1)의 양측 단면이 맞접하도록 접착된 구조를 이루고 있다.The above-described hollow structure prevents rear tilting of the vehicle body due to vortex phenomena of air generated at the rear of the cab while driving the cargo vehicle and at the same time reduces air resistance of the loaded cargo and the vehicle to ensure safe driving of the vehicle. In the case of a hollow structure installed at the rear of the cab, the hollow structure manufactured by the conventional FRP method is composed of an upper cover 2 and a lower cover 1 as shown in FIG. Both ends of the upper cover 2 and the lower cover 1 are bonded to each other to form a bonded structure.

이러한 FRP 재질로 구성된 종래 중공형 구조물은 상부커버(2)와 하부커버(1)가 얇은 두께(t:3~4㎜)를 구비하여 상부커버(2)와 하부커버(1)의 접합면적이 충분치 못해 접합면적을 증가시키기 위한 별도의 연결보강부(5)를 상부커버(2)와 하부커버(1)의 내부에 설치하여야 하며, 도시하지 않은 하부형틀에 하부커버(1)를 위치시킨 후 상부형틀에 위치한 상부커버(2)의 양측단면이 하부커버(1)의 양측단면과 맞접하도록 상부커버(2)를 위치시켜 상부커버와 하부커버를 접착하는 과정을 수행하게 된다.In the conventional hollow structure made of such FRP material, the upper cover 2 and the lower cover 1 have a thin thickness (t: 3 to 4 mm), and thus the bonding area between the upper cover 2 and the lower cover 1 is large. It is not enough to install a separate connecting reinforcement part 5 to the inside of the upper cover 2 and the lower cover 1 to increase the bonding area, and after placing the lower cover 1 in the lower mold not shown The upper cover 2 is positioned so that both end surfaces of the upper cover 2 positioned in the upper mold form contact with both end surfaces of the lower cover 1, thereby bonding the upper cover and the lower cover.

이때 접합라인이 중공형 구조물의 정면에 위치하고 있어 외관이 미려하지 못하고, FRP수지의 특성상 접합부위의 상하 수축현상으로 박리현상이 발생할 수 있어 주행시 진동에 따른 접합면의 크랙 및 박리가능성이 높으며, 별도의 연결보강부(5)를 설치하기 위한 작업을 수행해야 하므로 작업공수 및 생산비용이 증가하게 되는 문제점이 발생되었다.At this time, the joining line is located in front of the hollow structure, and the appearance is not beautiful. Due to the characteristics of the FRP resin, the peeling phenomenon may occur due to the up and down shrinkage of the joining part. Since the work to install the connection reinforcing portion (5) of the problem occurred that the labor and production costs increase.

이러한 문제점을 해소하기 위해 근래 제안되어진 기술이 대한민국등록특허 10-480494이며, 해당 등록기술을 첨부한 도 2를 참조하여 간략히 살펴보면, 평판인 하부형틀(10)에 보조형틀(20)을 결합한 후 이를 일체로 하여 하부커버(30)를 성형한다.Recently proposed technology to solve this problem is Republic of Korea Patent No. 10-480494, briefly with reference to Figure 2 attached to the registration technology, after combining the auxiliary frame 20 to the lower mold 10 is a flat plate The lower cover 30 is integrally formed.

이후 하부커버(30)가 성형되어지면 이를 건조시켜 경화시킨 후에 보조형틀(20)을 탈거하고, 상부형틀(40)을 이용하여 상부커버(50)를 성형한다.After the lower cover 30 is molded, after drying and curing, the auxiliary mold 20 is removed, and the upper cover 50 is formed by using the upper mold 40.

상술한 과정을 통해 상부커버(50)와 하부커버(30)가 성형 완료되면, 하부형틀(10)과 상부형틀(40)을 맞접하도록 하여 상부커버(50)의 내측단면에 하부커버(30)의 외측단면이 서로 접하며 그 접촉면을 접착하도록 하여 중공형 구조물을 형성하게 된다.When the upper cover 50 and the lower cover 30 is molded through the above-described process, the lower cover 10 is brought into contact with the upper mold 40 and the lower cover 30 on the inner end surface of the upper cover 50. The outer end face of the contact with each other and the contact surface to be bonded to form a hollow structure.

이후 형틀(10, 40)을 제거하여 완성품을 생산하게 된다.Since the mold (10, 40) is removed to produce a finished product.

그러나 이러한 등록특허 기술이 종래의 기술에 비하여 작업공수 및 생산비용이 증가를 억제하기는 하지만, 하부형틀과 보조형틀을 결합하고 하부커버가 완전히 경화될때까지 대기하였다가 분리하는 시간적 이중 공정 구조를 갖기 때문에 이 역시 작업자의 수율이 저하되는 문제점을 갖는다.However, although this patented technology suppresses the increase in labor and production cost compared to the conventional technology, it has a temporal double process structure that combines the lower mold and the auxiliary mold and waits until the lower cover is completely cured. This also has a problem that the yield of the worker is lowered.

더욱이, 하부커버가 완전히 경화되어지면 상부커버의 경화이전에 하부커버와 결합한다 하더라도 FRP 재질의 특성상 박리현상이 심화되며 접착력이 저하되기 때문에 접착면에 대한 사포공정이 필요하기 때문에 작업공수 및 생산비용의 감소 효과를 크게 기대할 수 없다는 한계성이 대두되었다.Moreover, if the lower cover is fully cured, even if it is combined with the lower cover before the upper cover is hardened, the peeling phenomenon is intensified due to the characteristics of the FRP material and the adhesive force is reduced, so the sanding process on the adhesive surface is required. There is a limit to the fact that we cannot expect a significant reduction in

상술한 문제점을 해소하기 위한 본 발명의 목적은 차량용 FRP 중공형 구조물에 관한 것으로 특히, 상부커버와 하부커버의 측면부가 겹침구조를 갖도록 구성되어 별도의 연결보강부 없이도 상부커버와 하부커버의 접합면적을 최대화할 수 있어 접합강도를 보강할 수 있도록 함과 동시에 보조수단 없이도 하부커버 생성시키도록 하기 위한 겹침 구조를 갖는 차량용 FRP 중공형 구조물 및 그 제조방법을 제공하는 데 있다.An object of the present invention for solving the above problems relates to a vehicle FRP hollow structure, in particular, the side surface of the upper cover and the lower cover is configured to have an overlapping structure, the joint area of the upper cover and the lower cover without a separate connecting reinforcement The present invention provides a vehicle FRP hollow structure and a method of manufacturing the same having an overlapping structure for generating a bottom cover without an auxiliary means while allowing to reinforce the bonding strength.

상기와 같은 목적을 달성하기 위한 본 발명에 따른 겹침구조를 갖는 차량용 FRP 중공형 구조물의 제조방법의 특징은, 특정 외관 형상을 가지며 개방구조의 내측 공간을 갖는 상부커버와, 상기 상부커버의 내측 공간에 압입되어 개방구조를 폐쇄하는 대응적 외관 형상을 가지는 하부커버로 구성되는 겹침 구조를 갖는 차량용 FRP 중공형 구조물의 제조 방법에 있어서: 상기 상부커버의 천정면 및 측면에 관한 외관에 대응하는 형상을 음각으로 갖는 상부형틀을 구비하는 제 1단계와; 상기 하부커버의 바닥면에 대응하는 형상이 구비되며 상기 하부커버의 바닥면에 대응하는 형상의 내부 임의의 위치에 상기 상부커버의 측면 형상에 대응하여 임의의 각도로 돌출되어진 돌출부를 갖는 하부형틀을 구비하는 제 2단계와; 상기 제 1단계와 제 2단계 를 통해 구비되어진 형틀의 성형부에 FRP를 여러겹 도포하여 일정두께를 이루도록 상부커버 및 하부커버를 성형하는 제 3단계와; 상기 제 3단계를 통해 성형되어진 상부커버 및 하부커버가 경화되기 전에 상부커버의 내측면이 하부커버의 외측면에 밀착되도록 상부형틀을 하부형틀의 상부에 씌우는 제 4단계; 및 상기 제 4단계를 통해 상부커버와 하부커버가 결합한 후 경화되어지면 상부형틀과 하부형틀로부터 성형된 중공형 구조물을 탈거하는 제 5단계를 포함하는 데 있다.Features of the manufacturing method of a vehicle FRP hollow structure having an overlapping structure according to the present invention for achieving the above object, the upper cover having a specific appearance shape and having an inner space of the open structure, the inner space of the upper cover A method for manufacturing a vehicular FRP hollow structure having an overlapping structure consisting of a lower cover having a corresponding exterior shape press-fitted into a closed structure, the method comprising: a shape corresponding to an exterior of a ceiling surface and a side surface of the upper cover; A first step having an upper mold having an intaglio; The lower mold having a shape corresponding to the bottom surface of the lower cover and having a protrusion protruding at an arbitrary angle corresponding to the side shape of the upper cover at an arbitrary position inside the shape corresponding to the bottom surface of the lower cover. A second step comprising; A third step of forming an upper cover and a lower cover to form a predetermined thickness by applying multiple layers of FRP to the molding part of the mold provided through the first and second steps; A fourth step of covering the upper mold on the upper part of the lower mold so that the inner surface of the upper cover is in close contact with the outer surface of the lower cover before the upper cover and the lower cover formed through the third step are cured; And a fifth step of removing the hollow structure formed from the upper mold and the lower mold when the upper cover and the lower cover are combined and hardened through the fourth step.

상기와 같은 목적을 달성하기 위한 본 발명에 따른 겹침구조를 갖는 차량용 FRP 중공형 구조물의 제조방법의 부가적인 특징은, 상기 제 2단계를 통해 구비되어진 하부형틀의 돌출부는 소정의 돌출크기를 가지며 상기 상부커버의 측면 형상에 대응하여 연속적으로 돌출 형성되어 있는 데 있다.Additional features of the manufacturing method of a vehicle FRP hollow structure having an overlapping structure according to the present invention for achieving the above object, the projection of the lower mold provided through the second step has a predetermined protrusion size It protrudes continuously to correspond to the side shape of the top cover.

상기와 같은 목적을 달성하기 위한 본 발명에 따른 겹침구조를 갖는 차량용 FRP 중공형 구조물의 특징은, 특정 외관 형상을 갖는 상부커버의 천정면 및 측면에 관한 외관에 대응하는 형상을 음각으로 갖는 상부형틀을 구비하는 제 1단계와; 하부커버의 바닥면에 대응하는 형상이 구비되며 상기 하부커버의 바닥면에 대응하는 형상의 내부 임의의 위치에 상기 상부커버의 측면 형상에 대응하여 임의의 각도로 돌출되어진 돌출부를 갖는 하부형틀을 구비하는 제 2단계와; 상기 제 1단계와 제 2단계를 통해 구비되어진 형틀의 성형부에 FRP를 여러겹 도포하여 일정두께를 갖도록 하여 상부커버 및 하부커버를 성형하는 제 3단계와; 상기 제 3단계를 통해 성형되어진 상부커버 및 하부커버가 경화되기 전에 상부커버의 내측면이 하부커버의 외측면에 밀착되도록 상부형틀을 하부형틀의 상부에 씌우는 제 4단계; 및 상기 제 4단계를 통해 상부커버와 하부커버가 결합한 후 경화되어지면 상부형틀과 하부형틀로부터 성형된 중공형 구조물을 탈거하는 제 5단계를 포함하는 제조방법에 의해: 특정 외관 형상을 가지며 개방구조의 내측 공간을 갖는 상부커버와; 상기 상부커버의 내측 공간에 압입되어 개방구조를 폐쇄하는 대응적 외관 형상을 가지는 하부커버로 구성되는 데 있다.Features of the vehicle FRP hollow structure having an overlapping structure according to the present invention for achieving the above object, the upper mold having a shape corresponding to the appearance on the ceiling surface and the side of the upper cover having a specific appearance shape intaglio A first step having a; The lower cover is provided with a shape corresponding to the bottom surface of the lower cover and has a protrusion projecting at an arbitrary angle corresponding to the side shape of the upper cover at an arbitrary position inside the shape corresponding to the bottom surface of the lower cover. A second step of doing; A third step of forming an upper cover and a lower cover by applying multiple layers of FRP to the molding parts of the mold provided through the first and second steps to have a predetermined thickness; A fourth step of covering the upper mold on the upper part of the lower mold so that the inner surface of the upper cover is in close contact with the outer surface of the lower cover before the upper cover and the lower cover formed through the third step are cured; And a fifth step of removing the hollow structure formed from the upper mold and the lower mold when the upper cover and the lower cover are combined and hardened through the fourth step. An upper cover having an inner space of the upper cover; It is composed of a lower cover having a corresponding appearance shape is pressed into the inner space of the upper cover to close the open structure.

상기와 같은 목적을 달성하기 위한 본 발명에 따른 겹침구조를 갖는 차량용 FRP 중공형 구조물의 부가적인 특징은, 상기 상부커버와 하부커버의 압입 접촉면은 상부커버 및 하부커버를 구성하는 FRP의 경화과정에서 일체화되어 임의의 접합수단이 사용되지 않는 데 있다.Additional features of the vehicle FRP hollow structure having an overlapping structure according to the present invention for achieving the above object, the press-fit contact surface of the upper cover and the lower cover in the curing process of the FRP constituting the upper cover and the lower cover Integral means that no joining means are used.

본 발명의 상술한 목적과 여러 가지 장점은 이 기술 분야에 숙련된 사람들에 의해, 첨부된 도면을 참조하여 후술되는 본 발명의 바람직한 실시 예로부터 더욱 명확하게 될 것이다.The above object and various advantages of the present invention will become more apparent from the preferred embodiments of the present invention described below with reference to the accompanying drawings by those skilled in the art.

이하, 본 발명의 바람직한 실시 예를 첨부한 도면을 참조하여 상세히 설명한다.Hereinafter, exemplary embodiments of the present invention will be described in detail with reference to the accompanying drawings.

첨부한 도 3은 본 발명에 따른 겹침 구조를 갖는 차량용 FRP 중공형 구조물의 제조 공정 예시도로서, 종래기술을 설명하기 위한 도 2에 대응한 공정 예를 도시하였으나 실제적으로는 참조번호 400으로 지칭되는 상부커버와 참조번호 200으로 지칭되는 하부커버가 동시에 성형되어짐을 미리 밝혀진다.FIG. 3 is an exemplary view illustrating a manufacturing process of a vehicle FRP hollow structure having an overlapping structure according to the present invention. Although FIG. 3 illustrates a process example corresponding to FIG. It is known in advance that the upper cover and the lower cover, which is referred to by reference numeral 200, are molded simultaneously.

우선, 상부커버(400)는 특정 외관 형상을 가지며 개방구조의 내측 공간을 가지므로, 참조번호 300으로 지칭되는 상부형틀은 상기 상부커버의 천정면 및 측면에 관한 외관에 대응하는 형상을 음각으로 갖게 된다.First, since the upper cover 400 has a specific appearance shape and has an inner space of the open structure, the upper mold, which is referred to by reference numeral 300, has a shape corresponding to the appearance of the ceiling surface and the side of the upper cover intaglio. do.

또한, 하부커버(200)는 상기 상부커버(400)의 내측 공간에 압입되어 상기 상부커버(400)의 개방구조를 폐쇄하는 형상을 가져야 하기 때문에, 참조번호 100으로 지칭되는 하부형틀은 상기 하부커버(200)의 바닥면에 대응하는 형상이 구비되어 진다.In addition, since the lower cover 200 should be press-fitted into the inner space of the upper cover 400 to close the open structure of the upper cover 400, the lower frame referred to by reference numeral 100 is the lower cover The shape corresponding to the bottom surface of the 200 is provided.

이때, 하부형틀(100)에는 상기 하부커버(200)의 바닥면에 대응하는 형상의 내부 임의의 위치에 상기 상부커버(400)의 측면 형상에 대응하여 임의의 각도로 돌출되어진 돌출부(110)를 갖는데, 상기 돌출부(110)는 소정의 돌출크기(7㎜~14㎜)를 가지며 상기 상부커버(400)의 측면 형상에 대응하여 연속적으로 돌출되어진 것이다.At this time, the lower mold 100 has a protrusion 110 protruding at an arbitrary angle corresponding to the side shape of the upper cover 400 at an arbitrary position inside the shape corresponding to the bottom surface of the lower cover 200. The protrusion 110 has a predetermined protrusion size (7 mm to 14 mm) and protrudes continuously to correspond to the side shape of the upper cover 400.

따라서 상기 돌출부(110)는 추후 성형되는 하부커버(200)의 압입면을 형성하며 성형과정에서 하부커버(200)의 흔들림 등을 방지하게 된다.Therefore, the protrusion 110 forms a press-fit surface of the lower cover 200 to be formed later, and prevents shaking of the lower cover 200 during the molding process.

상술한 상부형틀(300)과 하부형틀(100)을 준비한 후 해당 형틀의 성형부에 FRP를 여러겹 도포하여 일정두께를 갖도록 하여 상부커버(400) 및 하부커버(200)를 성형하고, 성형되어진 상부커버(400)와 하부커버(200)가 경화되기 전에 상부커버(400)의 내측면이 하부커버(200)의 외측면에 밀착되도록 상부형틀(300)을 하부형틀(100)의 상부에 씌우게 된다.After preparing the upper mold 300 and the lower mold 100 described above, by applying a plurality of layers of FRP to the molding portion of the mold to have a predetermined thickness to form the upper cover 400 and the lower cover 200, and Before the upper cover 400 and the lower cover 200 are cured, the upper mold 300 is covered on the upper portion of the lower mold 100 so that the inner surface of the upper cover 400 is in close contact with the outer surface of the lower cover 200. You will cry.

이때 약간의 가압 수행하기도 한다.At this time, some pressure may be performed.

이후, 상부커버(400)와 하부커버(200)가 결합한 후 일정시간이 경과하여 상부커버(400)와 하부커버(200)의 재질인 FRP가 경화되어지면 상부형틀(300)과 하부형틀(100)로부터 성형된 중공형 구조물을 탈거하게 된다.After the upper cover 400 and the lower cover 200 are combined, a predetermined time passes and the FRP, which is a material of the upper cover 400 and the lower cover 200, is cured, the upper mold 300 and the lower mold 100 The hollow hollow structure is removed.

이때 상기 상부커버(400)와 하부커버(200)의 압입 접촉면은 상부커버(400) 및 하부 커버(200)를 구성하는 FRP의 경화 이전단계에서 접촉하게 됨으로써, 하나로 일체화되어지며 경화단계 이후에는 임의의 접합수단이 없이도 접합율 100%를 유지하게 된다.At this time, the press-contacting contact surfaces of the upper cover 400 and the lower cover 200 are brought into contact with each other prior to the hardening of the FRP constituting the upper cover 400 and the lower cover 200, thereby being integrated into one unit and optionally after the curing step. The bonding ratio is maintained at 100% even without the bonding means.

첨부한 도 4와 도 5는 본 발명에 따른 겹침 구조를 갖는 차량용 FRP 중공형 구조물 성형을 위한 상하부형틀의 예시도로서, 도 4는 상부형틀을 나타내고 잇으며, 도 5는 하부형틀을 나타내고 있다.4 and 5 are exemplary views of upper and lower molds for forming a vehicle FRP hollow structure having an overlapping structure according to the present invention, and FIG. 4 shows an upper mold, and FIG. 5 shows a lower mold.

이상의 설명에서 본 발명은 특정의 실시 예와 관련하여 도시 및 설명하였지만, 특허청구범위에 의해 나타난 발명의 사상 및 영역으로부터 벗어나지 않는 한도 내에서 다양한 개조 및 변화가 가능하다는 것을 당 업계에서 통상의 지식을 가진 자라면 누구나 쉽게 알 수 있을 것이다.While the invention has been shown and described in connection with specific embodiments thereof, it is well known in the art that various modifications and changes can be made without departing from the spirit and scope of the invention as indicated by the claims. Anyone who owns it can easily find out.

이상에서 설명한 바와 같은 본 발명에 따른 겹침 구조를 갖는 차량용 FRP 중공형 구조물 및 그 제조방법을 제공하면, 상부커버와 하부커버의 측면부가 겹침구조를 갖도록 구성되어 별도의 연결보강부 없이도 상부커버와 하부커버의 접합면적을 최대화할 수 있어 접합강도를 보강할 수 있도록 함과 동시에 보조수단 없이도 하부커버 생성시키며, 압입 접착면에 대한 사포공정과 같은 별도의 공정을 수행하지 않더라도 접합율 100%를 유지할 수 있어 크게 작업공수 및 생산비용을 감소시키게 된다.When providing a vehicle FRP hollow structure having an overlapping structure and a method for manufacturing the same according to the present invention as described above, the side cover of the upper cover and the lower cover is configured to have an overlapping structure, the upper cover and the lower without additional connection reinforcement The joint area of the cover can be maximized to reinforce the joint strength, and the lower cover can be generated without any auxiliary means, and the joint ratio can be maintained at 100% even if a separate process such as sanding of the press-bonded adhesive surface is not performed. This greatly reduces labor and production costs.

Claims (4)

특정 외관 형상을 가지며 개방구조의 내측 공간을 갖는 상부커버와, 상기 상부커버의 내측 공간에 압입되어 개방구조를 폐쇄하는 대응적 외관 형상을 가지는 하부커버로 구성되는 겹침 구조를 갖는 차량용 FRP 중공형 구조물의 제조 방법에 있어서:FRP hollow structure for a vehicle having an overlapping structure consisting of a top cover having a specific appearance shape and an inner space of the open structure and a lower cover having a corresponding appearance shape pressed into the inner space of the top cover to close the open structure. In the manufacturing method of: 상기 상부커버의 천정면 및 측면에 관한 외관에 대응하는 형상을 음각으로 갖는 상부형틀을 구비하는 제 1단계와;A first step of having an upper mold having a shape corresponding to an appearance of a ceiling surface and a side surface of the upper cover at an intaglio; 상기 하부커버의 바닥면에 대응하는 형상이 구비되며 상기 하부커버의 바닥면에 대응하는 형상의 내부 임의의 위치에 상기 상부커버의 측면 형상에 대응하여 임의의 각도로 돌출되어진 돌출부를 갖는 하부형틀을 구비하는 제 2단계와;The lower mold having a shape corresponding to the bottom surface of the lower cover and having a protrusion protruding at an arbitrary angle corresponding to the side shape of the upper cover at an arbitrary position inside the shape corresponding to the bottom surface of the lower cover. A second step comprising; 상기 제 1단계와 제 2단계를 통해 구비되어진 형틀의 성형부에 FRP를 여러겹 도포하여 일정두께를 갖도록 하여 상부커버 및 하부커버를 성형하는 제 3단계와;A third step of forming an upper cover and a lower cover by applying multiple layers of FRP to the molding parts of the mold provided through the first and second steps to have a predetermined thickness; 상기 제 3단계를 통해 성형되어진 상부커버 및 하부커버가 경화되기 전에 상부커버의 내측면이 하부커버의 외측면에 밀착되도록 상부형틀을 하부형틀의 상부에 씌우는 제 4단계; 및A fourth step of covering the upper mold on the upper part of the lower mold so that the inner surface of the upper cover is in close contact with the outer surface of the lower cover before the upper cover and the lower cover formed through the third step are cured; And 상기 제 4단계를 통해 상부커버와 하부커버가 결합한 후 경화되어지면 상부형틀과 하부형틀로부터 성형된 중공형 구조물을 탈거하는 제 5단계를 포함하는 것을 특징으로 하는 겹침구조를 갖는 차량용 FRP 중공형 구조물의 제조방법.The FRP hollow structure for a vehicle having an overlapping structure comprising a fifth step of removing the hollow structure formed from the upper mold and the lower mold when the upper cover and the lower cover are combined and hardened through the fourth step. Manufacturing method. 제 1항에 있어서,The method of claim 1, 상기 제 2단계를 통해 구비되어진 하부형틀의 돌출부는 소정의 돌출크기를 가지며 상기 상부커버의 측면 형상에 대응하여 연속적으로 돌출 형성되어 있는 것을 특징으로 하는 겹침구조를 갖는 차량용 FRP 중공형 구조물의 제조방법.The protrusion of the lower mold provided through the second step has a predetermined protrusion size and is protruded continuously to correspond to the side shape of the upper cover. . 특정 외관 형상을 갖는 상부커버의 천정면 및 측면에 관한 외관에 대응하는 형상을 음각으로 갖는 상부형틀을 구비하는 제 1단계와; 하부커버의 바닥면에 대응하는 형상이 구비되며 상기 하부커버의 바닥면에 대응하는 형상의 내부 임의의 위치에 상기 상부커버의 측면 형상에 대응하여 임의의 각도로 돌출되어진 돌출부를 갖는 하부형틀을 구비하는 제 2단계와; 상기 제 1단계와 제 2단계를 통해 구비되어진 형틀의 성형부에 FRP를 여러겹 도포하여 일정두께를 갖도록 하여 상부커버 및 하부커버를 성형하는 제 3단계와; 상기 제 3단계를 통해 성형되어진 상부커버 및 하부커버가 경화되기 전에 상부커버의 내측면이 하부커버의 외측면에 밀착되도록 상부형틀을 하부형틀의 상부에 씌우는 제 4단계; 및 상기 제 4단계를 통해 상부커버와 하부커버가 결합한 후 경화되어지면 상부형틀과 하부형틀로부터 성형된 중공형 구조물을 탈거하는 제 5단계를 포함하는 제조방법에 의해:A first step of having a top mold having a shape corresponding to an appearance of a ceiling surface and a side surface of the top cover having a specific appearance shape at an intaglio; The lower cover is provided with a shape corresponding to the bottom surface of the lower cover and has a protrusion projecting at an arbitrary angle corresponding to the side shape of the upper cover at an arbitrary position inside the shape corresponding to the bottom surface of the lower cover. A second step of doing; A third step of forming an upper cover and a lower cover by applying multiple layers of FRP to the molding parts of the mold provided through the first and second steps to have a predetermined thickness; A fourth step of covering the upper mold on the upper part of the lower mold so that the inner surface of the upper cover is in close contact with the outer surface of the lower cover before the upper cover and the lower cover formed through the third step are cured; And a fifth step of removing the hollow structure formed from the upper mold and the lower mold when the upper cover and the lower cover are combined and hardened through the fourth step. 특정 외관 형상을 가지며 개방구조의 내측 공간을 갖는 상부커버와; 상기 상부커버의 내측 공간에 압입되어 개방구조를 폐쇄하는 대응적 외관 형상을 가지는 하부커버로 구성되는 것을 특징으로 하는 겹침 구조를 갖는 차량용 FRP 중공형 구조물.An upper cover having a specific appearance shape and having an inner space of an open structure; FRP hollow structure for a vehicle having an overlapping structure, characterized in that consisting of a lower cover having a corresponding appearance shape is pressed into the inner space of the upper cover to close the open structure. 제 3항에 있어서,The method of claim 3, wherein 상기 상부커버와 하부커버의 압입 접촉면은 상부커버 및 하부커버를 구성하는 FRP의 경화과정에서 일체화되어 임의의 접합수단이 사용되지 않는 것을 특징으로 하는 겹침 구조를 갖는 차량용 FRP 중공형 구조물.The press-fitting contact surface of the upper cover and the lower cover is integrated in the curing process of the FRP constituting the upper cover and the lower cover is a vehicle FRP hollow structure having an overlapping structure, characterized in that no bonding means is used.
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KR20240001524A (en) 2022-06-27 2024-01-03 김영복 Forming method of frp structure with thickness part

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* Cited by examiner, † Cited by third party
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