KR100303031B1 - Method for manufacturing frame for vehicle - Google Patents

Method for manufacturing frame for vehicle Download PDF

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Publication number
KR100303031B1
KR100303031B1 KR1019960070697A KR19960070697A KR100303031B1 KR 100303031 B1 KR100303031 B1 KR 100303031B1 KR 1019960070697 A KR1019960070697 A KR 1019960070697A KR 19960070697 A KR19960070697 A KR 19960070697A KR 100303031 B1 KR100303031 B1 KR 100303031B1
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KR
South Korea
Prior art keywords
resin layer
aluminum pipe
frp
frp resin
frame
Prior art date
Application number
KR1019960070697A
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Korean (ko)
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KR19980051781A (en
Inventor
호 성 권
Original Assignee
이계안
현대자동차주식회사
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Priority to KR1019960070697A priority Critical patent/KR100303031B1/en
Publication of KR19980051781A publication Critical patent/KR19980051781A/en
Application granted granted Critical
Publication of KR100303031B1 publication Critical patent/KR100303031B1/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
    • B29C70/00—Shaping composites, i.e. plastics material comprising reinforcements, fillers or preformed parts, e.g. inserts
    • B29C70/04—Shaping composites, i.e. plastics material comprising reinforcements, fillers or preformed parts, e.g. inserts comprising reinforcements only, e.g. self-reinforcing plastics
    • B29C70/28—Shaping operations therefor
    • B29C70/30—Shaping by lay-up, i.e. applying fibres, tape or broadsheet on a mould, former or core; Shaping by spray-up, i.e. spraying of fibres on a mould, former or core
    • B29C70/305—Spray-up of reinforcing fibres with or without matrix to form a non-coherent mat in or on a mould
    • 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
    • B29C70/00—Shaping composites, i.e. plastics material comprising reinforcements, fillers or preformed parts, e.g. inserts
    • B29C70/04—Shaping composites, i.e. plastics material comprising reinforcements, fillers or preformed parts, e.g. inserts comprising reinforcements only, e.g. self-reinforcing plastics
    • B29C70/06—Fibrous reinforcements only
    • B—PERFORMING OPERATIONS; TRANSPORTING
    • B29—WORKING OF PLASTICS; WORKING OF SUBSTANCES IN A PLASTIC STATE IN GENERAL
    • B29D—PRODUCING PARTICULAR ARTICLES FROM PLASTICS OR FROM SUBSTANCES IN A PLASTIC STATE
    • B29D23/00—Producing tubular articles
    • B29D23/001—Pipes; Pipe joints
    • F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
    • F16—ENGINEERING ELEMENTS AND UNITS; GENERAL MEASURES FOR PRODUCING AND MAINTAINING EFFECTIVE FUNCTIONING OF MACHINES OR INSTALLATIONS; THERMAL INSULATION IN GENERAL
    • F16L—PIPES; JOINTS OR FITTINGS FOR PIPES; SUPPORTS FOR PIPES, CABLES OR PROTECTIVE TUBING; MEANS FOR THERMAL INSULATION IN GENERAL
    • F16L9/00—Rigid pipes
    • F16L9/14—Compound tubes, i.e. made of materials not wholly covered by any one of the preceding groups
    • F16L9/147—Compound tubes, i.e. made of materials not wholly covered by any one of the preceding groups comprising only layers of metal and plastics with or without reinforcement

Landscapes

  • Engineering & Computer Science (AREA)
  • Mechanical Engineering (AREA)
  • General Engineering & Computer Science (AREA)
  • Chemical & Material Sciences (AREA)
  • Composite Materials (AREA)
  • Body Structure For Vehicles (AREA)
  • Casting Or Compression Moulding Of Plastics Or The Like (AREA)
  • Laminated Bodies (AREA)

Abstract

PURPOSE: A method for manufacturing a frame for a vehicle is provided to minimize cost by reducing weight and size, to improve vibration resistance, and to maximize shock energy absorptiveness. CONSTITUTION: A method for manufacturing a frame for a vehicle comprises the steps of injecting an FRP(Fiber Reinforced Plastic) resin layer(2) to the inner face of an aluminum pipe(1) and sustaining the temperature around the aluminum pipe at 120-130deg.C by installing a hot wire(3). By maintaining the temperature of the aluminum pipe, plasticity of the FRP resin layer is kept. The FRP resin is injected by an injection nozzle(8) rotating by a rotating shaft(7). Thus, resin is pasted uniformly. The FRP resin layer absorbs vibration and shock energy.

Description

자동차용 프레임 제조방법Manufacturing method of automobile frame

본 발명은 자동차용 프레임 제조방법에 관한 것으로서, 보다 상세하게는 프레임의 강도를 최대한 보강하고, 내진동성을 향상시키며, 충격 에너지의 흡수를 극대화시키고, 강도 대비 중량을 최소화시키는 동시에 면적 대비 크기를 최소화시키며, 비용이 절감되도록 한 자동차용 프레임 제조방법에 관한 것이다.The present invention relates to a method for manufacturing a frame for an automobile, and more particularly, to reinforce the strength of the frame to the maximum, to improve vibration resistance, to maximize the absorption of impact energy, and to minimize the weight to strength while minimizing the size to the area. And, and relates to a method for manufacturing a vehicle frame to reduce the cost.

일반적으로 차량의 각종 구조물을 지지함과 아울러 외부의 충격을 흡수하는 프레임으로 알루미늄이 널리 사용되고 있다.In general, aluminum is widely used as a frame that supports various structures of a vehicle and absorbs external shocks.

그러나, 알루미늄 프레임은 무게가 가볍다는 장점이 있는 반면에 강도 및 내진동성이 낮고, 층격을 흡수하는 정도가 낮으며, 단가가 높다는 단점이 있다.However, while the aluminum frame has the advantage of being light in weight, the strength and vibration resistance is low, the degree of absorbing the stratification is low, the unit cost is high.

본 발명의 목적은 프레임의 강도를 최대한 보강하고, 내진동성을 향상시키며, 충격 에너지의 흡수를 극대화시키고, 강도 대비 중량을 최소화시키는 동시에 면적 대비 크기를 최소화시키며, 비용이 절감되도록 한 자동차용 프레임 제소방법을 제공함에 있다.An object of the present invention is to enhance the strength of the frame, to improve vibration resistance, to maximize the absorption of impact energy, to minimize the weight compared to the strength while minimizing the size compared to the area, and to reduce costs In providing a method.

본 발명의 목적을 달성하기 위하여 열선(3)과 수지 공급용 방사상의 사출 노즐(8)을 구비한 사출 다이(4)의 내측에 알루미늄 파이프(1)를 배치하고 사출노즐(8)을 회전시키는 방법으로 FRP 수지층(2)을 알루미늄 파이프(1)의 내벽에 착포시키는 동시에 FRP 수지층(2)의 착포 후 상기 열선(3)으로 120∼130℃의 온도를 유지하여 FRP 수지층(2)의 소성상태를 유지하는 단계와, 내벽에 FRP 수지층(2)ㅇ; 착포된 알루미늄 파이프(1)를 상부 금형(5)과 하부 금형(6)의 내측에 배치하고 120∼ 130℃의 고압 증기로 가압하여 소정의 형상을 갖는 주형물을 성형하는 단계로 이루어지는 것을 특징으로 하는 자동차용 프레임 제조방법이 제공된다.In order to achieve the object of the present invention, the aluminum pipe 1 is disposed inside the injection die 4 having the heating wire 3 and the radial injection nozzle 8 for supplying the resin, and the injection nozzle 8 is rotated. The FRP resin layer 2 is formed on the inner wall of the aluminum pipe 1 by the method, and the FRP resin layer 2 is maintained by maintaining the temperature of 120 to 130 ° C. with the hot wire 3 after the FRP resin layer 2 is caught. Maintaining a sintered state of the FRP resin layer 2 on the inner wall; Comprising a step of arranging the molded aluminum pipe (1) inside the upper mold (5) and the lower mold (6) and pressurized with a high-pressure steam of 120 ~ 130 ℃ to form a mold having a predetermined shape. A vehicle frame manufacturing method is provided.

도1은 본 발명에 따른 자동차용 프레임 제조방법을 순차적으로 보여주는 개략적인 공정도1 is a schematic process diagram sequentially showing a method for manufacturing a vehicle frame according to the present invention.

도2는 본 발명에 의한 자동차용 프레임 제조방법에 사용되는 사출 노즐을 보여주는 개략적인 정면도Figure 2 is a schematic front view showing an injection nozzle used in the method for manufacturing a vehicle frame according to the present invention.

* 도면의 주요 부분에 대한 부호의 설명* Explanation of symbols for the main parts of the drawings

1 : 알루미늄 파이프 2 : FRP 수지층1: aluminum pipe 2: FRP resin layer

3 : 열선 4 : 사출 다이3: heating wire 4: injection die

5 : 상부 금형 6 : 하부 금형5: upper mold 6: lower mold

7 : 회전축 8 : 사출 노즐7: rotating shaft 8: injection nozzle

이하, 첨부한 도면을 참조하여 본 발명을 상세히 설명하면 다음과 같다.Hereinafter, the present invention will be described in detail with reference to the accompanying drawings.

본 발명에 따른 자동차용 프레임 제조방법은 먼저 도 1에 도시한 바와 같이 FRP(Fiber Reirforce Plastic) 수지층(2)을 알루미늄 파이프(1)의 내주면에 사출시킨다.In the method of manufacturing a frame for an automobile according to the present invention, as shown in FIG. 1, an FRP (Fiber Reirforce Plastic) resin layer 2 is injected into an inner circumferential surface of an aluminum pipe 1.

이때, 상기 알루미늄 파이프(1)의 주위에는 열선(3)을 설치하여 120∼130℃의 온도를 유지함으로써, FRP 수지(2)의 착포 후 소성을 유지함과 동시에 FRP수지(2)의 착포가 용이하게 이루어지도록 보온을 시킨다.At this time, by installing a heating wire 3 around the aluminum pipe 1 to maintain a temperature of 120 ~ 130 ℃, it is easy to maintain the firing after the foaming of the FRP resin (2) and the foaming of the FRP resin (2) Keep warm to make it work.

도2는 본 발명에 의한 자동차용 프레임 제조방법에 사용되는 사출 노즐을 보여주는 개략적인 정면도로서, 이러한 사출 노즐(8)은 회전축(7)에 의해 노즐 본체가 회전되면서 수지를 분사하게 되므로서, 알루미늄 파이프(1)의 내벽에 FRP 수지층(2)이 균일하게 착포된다.Figure 2 is a schematic front view showing an injection nozzle used in the automobile frame manufacturing method according to the present invention, such injection nozzle 8 is to spray the resin while the nozzle body is rotated by the rotating shaft 7, aluminum The FRP resin layer 2 is uniformly caught on the inner wall of the pipe 1.

계속해서, 내벽에 FRP 수지층(2)을 갖는 알루미늄 파이프(1)를 상부 금형(5)과 하부 금형(6)의 내부에 배치하고, 알루미늄 파이프(1)의 내측으로 120∼130℃의 온도를 갖는 고압의 증기를 가압함으로써, FRP 수지층(2)의 가소화 직전 상태와 알루미늄 파이프(1)의 연질성을 이용하여 확장되면서 금형의 형상대로 주형물이 제고 될 수 있게 된다.Subsequently, the aluminum pipe 1 which has the FRP resin layer 2 in an inner wall is arrange | positioned inside the upper die 5 and the lower die 6, and the temperature of 120-130 degreeC inside the aluminum pipe 1 is carried out. By pressurizing the high-pressure steam having a, it is possible to enhance the mold in the shape of the mold while expanding using the softness of the aluminum pipe 1 and the state immediately before the plasticization of the FRP resin layer 2.

따라서, 사출 다이 및 사출 노즐을 이용한 FRP 수지층의 착포단계와, 상하부금형을 이용한 최종 형상의 주형물 성형단계를 거쳐서 제조되는 FRP 수지층을 갖는 알루미늄 파이프는 차량의 프론트 또는 리어 범퍼 빔이나 라디에이터 어퍼 또는 로워 크로스 멤버나 기타 여러가지 보조 프레임으로 사용될 수 있으며, 이와 같이 알루미늄 파이프에 FRP 수지층을 구비함에 따라 진동 흡수는 물론 충격시 알루미늄파이프의 소성변형 직전 FRP 수지층의 변형으로 충격 에너지를 흡수할 수 있고, 최대 충돌시에는 알루미늄 파이프의 변형과 함께 그 내측에서 눌려지는 FRP 수지층의 으깨어짐으로 인해 더 많은 충격 에너지를 흡수할 수 있게 된다.Therefore, the aluminum pipe having the FRP resin layer manufactured through the foaming step of the FRP resin layer using the injection die and the injection nozzle, and the molding of the final shape of the mold using the upper and lower molds has the front or rear bumper beam or radiator upper of the vehicle. Alternatively, it can be used as a lower cross member or various other auxiliary frames. As the FRP resin layer is provided on the aluminum pipe, vibration energy can be absorbed and vibration energy can be absorbed by deformation of the FRP resin layer immediately before plastic deformation of the aluminum pipe upon impact. At the maximum impact, more impact energy can be absorbed due to the deformation of the aluminum pipe and the crushing of the FRP resin layer pressed inside.

이상에서 설명한 바와 같이 본 발명에 따른 자동차용 프레임 제조방법에 의해 제조된 프레임은 알루미늄의 강도를 최대한 보강하고, 내진동성을 향상시키며,충격 에너지의 흡수를 극대화시키는 효과가 있고, 강도 대비 중량 및 면적 대비 크기를 최소화하며, 비용이 절감되는 등의 여러가지 효과가 있다.As described above, the frame manufactured by the automobile frame manufacturing method according to the present invention has the effect of reinforcing the strength of aluminum as much as possible, improving vibration resistance, maximizing the absorption of impact energy, weight and area compared to strength. There are various effects such as minimizing the contrast size and reducing the cost.

Claims (1)

열선(3)과 수지 공급용 방사상의 사출 노즐(8)을 구비한 사출 다이(4)의 내측에 알루미늄 파이프(1)에 배치하고 사출 노즐(8)을 회전시키는 방법으로 FRP 수지층(2)을 알루미늄 파이프(1)의 내벽에 착포시키는 동시에 FRP 수지층(2)의 착포후 상기 열선(3)으로 120~130℃의 온도를 유지하여 FRP 수지층(2)의 소성상태를 유지하는 단계와, 내벽에 FRP 수지층(2)이 착포된 알루미늄 파이프(1)를 상부 금형(5)과 하부 금형(6)의 내측에 배치하고 120~130℃의 고압 증기로 가압하여 소정의 형상을 갖는 주형물을 성형하는 단계로 이루어지는 것을 특징으로 하는 자동차용 프레임 제조방법.The FRP resin layer 2 is disposed in the aluminum pipe 1 inside the injection die 4 having the heating wire 3 and the radial injection nozzle 8 for resin supply, and the injection nozzle 8 is rotated. To the inner wall of the aluminum pipe (1) and at the same time to maintain the firing state of the FRP resin layer (2) by maintaining the temperature of 120 ~ 130 ℃ with the heating wire (3) after the foaming of the FRP resin layer (2) and The aluminum pipe 1 having the FRP resin layer 2 on the inner wall is disposed inside the upper mold 5 and the lower mold 6 and pressurized with high pressure steam at 120 to 130 ° C. to have a predetermined shape. Method of manufacturing a frame for an automobile, comprising the step of forming water.
KR1019960070697A 1996-12-23 1996-12-23 Method for manufacturing frame for vehicle KR100303031B1 (en)

Priority Applications (1)

Application Number Priority Date Filing Date Title
KR1019960070697A KR100303031B1 (en) 1996-12-23 1996-12-23 Method for manufacturing frame for vehicle

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Application Number Priority Date Filing Date Title
KR1019960070697A KR100303031B1 (en) 1996-12-23 1996-12-23 Method for manufacturing frame for vehicle

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KR19980051781A KR19980051781A (en) 1998-09-25
KR100303031B1 true KR100303031B1 (en) 2001-11-22

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Citations (2)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US4102972A (en) * 1974-07-19 1978-07-25 Tomiji Tarukawa Refractory pipe fittings and production thereof
JPS5689527A (en) * 1979-12-21 1981-07-20 Mitsui Petrochem Ind Ltd Production of hollow container of thermoplastic and apparatus therefor

Patent Citations (2)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US4102972A (en) * 1974-07-19 1978-07-25 Tomiji Tarukawa Refractory pipe fittings and production thereof
JPS5689527A (en) * 1979-12-21 1981-07-20 Mitsui Petrochem Ind Ltd Production of hollow container of thermoplastic and apparatus therefor

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