KR20190071053A - Method for manufacturing fiber-reinforced plastic products including partition and metallic device for use therein - Google Patents
Method for manufacturing fiber-reinforced plastic products including partition and metallic device for use therein Download PDFInfo
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- KR20190071053A KR20190071053A KR1020170171750A KR20170171750A KR20190071053A KR 20190071053 A KR20190071053 A KR 20190071053A KR 1020170171750 A KR1020170171750 A KR 1020170171750A KR 20170171750 A KR20170171750 A KR 20170171750A KR 20190071053 A KR20190071053 A KR 20190071053A
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- reinforced plastic
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- fiber reinforced
- fiber
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- 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
- B29C45/00—Injection moulding, i.e. forcing the required volume of moulding material through a nozzle into a closed mould; Apparatus therefor
- B29C45/0005—Injection moulding, i.e. forcing the required volume of moulding material through a nozzle into a closed mould; Apparatus therefor using fibre reinforcements
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- 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
- B29C45/00—Injection moulding, i.e. forcing the required volume of moulding material through a nozzle into a closed mould; Apparatus therefor
- B29C45/17—Component parts, details or accessories; Auxiliary operations
- B29C45/1703—Introducing an auxiliary fluid into the mould
Abstract
Description
탄소섬유강화플라스틱과 같은 섬유강화플라스틱의 경우 금속 종류와 같은 압출성형 방법 등은 사용할 수 없는 관계로, 섬유강화플라스틱을 이용하여 내부에 중공이 있는 제품을 제작할 때에는 섬유강화플라스틱을 평면으로 제작한 후 이를 접착제 등을 이용하여 붙이는 방법으로 제품을 제작하거나, 소정의 내부금형(코아)에 섬유강화플라스틱을 감은 후 외부 금형에 넣고 경화시킨 후 다시 내부금형을 빼내는 방식으로 제품을 제작하는 방법을 취했다.In the case of fiber-reinforced plastics such as carbon fiber-reinforced plastics, extrusion molding methods such as metal types can not be used. Therefore, when a fiber-reinforced plastic is used to produce a hollow product, the fiber- A product is manufactured by a method of sticking it using an adhesive or the like, or a method of manufacturing a product by winding a fiber-reinforced plastic around a predetermined inner mold (core), putting it into an outer mold, curing it, and then pulling out the inner mold again.
본 발명은 내부에 칸막이가 존재하는 섬유강화플라스틱 제품의 제조방법 및 그 제조에 사용되는 금형장치에 관한 것이다. 최근 경량, 고강도의 소재로 섬유강화플라스틱(Fiber Reinforced Plastics: FRP)이 각광받고 있다. 이 섬유강화플라스틱은 상온 상압에서도 성형이 가능하고, 내식성에 강하며, 가벼우면서도 인장강도나 내충격성 등이 다른 재료에 비하여 뛰어나므로 건축재료, 요트나 소형 선박의 선체, 욕조, 컨테이너, 헬멧, 비행기의 기재 등으로 각광받고 있으며, 최근에는 골프클럽의 블랙샤프트, 낚싯대, 테니스 라켓 등 레저 스포츠 용품에 응용하는 시도도 많아지고 있다. 특히, 탄소섬유를 이용한 탄소섬유강화플라스틱(Carbon Fiber Reinforced Plastics: CFRP)의 경우 다른 섬유강화플라스틱보다 가벼우면서도 단위무게당 강도가 다른 재료에 비하여 대단히 크므로 많은 관심을 받고 있다. 탄소섬유는 유기섬유를 비활성기체 속에서 적당한 온도로 열처리한 후, 탄화·결정화시킨 섬유로 19세기 말, T.A. 에디슨이 백열전등의 필라멘트용으로 면이나 아마 등 셀룰로오스계 섬유를 원료로 탄소섬유를 만든 이래, UCC사가 레이온을 원료로 하여 로켓이나 미사일의 선단부 등의 내열재료로서 사용되는 탄소섬유를 개발하고, 최근에는 탄소섬유를 수지로 굳힌 복합재료(탄소섬유강화플라스틱)로 골프글러브의 샤프트, 테니스 라켓, 낚시줄 등 구조재료 등에도 많이 이용되고 있다.The present invention relates to a method for manufacturing a fiber-reinforced plastic product having a partition inside and a mold apparatus used for the production. Recently, Fiber Reinforced Plastics (FRP) has attracted attention as a lightweight, high strength material. This fiber-reinforced plastic can be molded at room temperature and normal pressure, is resistant to corrosion, and is lightweight, yet superior in tensile strength and impact resistance to other materials. Therefore, it can be used for construction materials, yachts, small ships, hulls, And recently, there has been an increasing tendency to apply it to leisure sports equipment such as a black shaft of a golf club, a fishing rod, a tennis racket, and the like. Particularly, carbon fiber reinforced plastics (CFRP) using carbon fiber is much more attractive than other fiber reinforced plastics because it is lighter than other materials having different strength per unit weight. Carbon fiber is a carbonized and crystallized fiber after heat treatment of organic fiber in an inert gas at an appropriate temperature, and at the end of the 19th century, T.A. Since Edison produced carbon fiber from cellulose fibers such as cotton and flax as filament for incandescent lamps, UCC has developed carbon fiber which is used as heat-resistant material such as rocket or missile tip by using rayon as material Is a composite material (carbon fiber reinforced plastic) that is made of carbon fiber resin and is widely used in construction materials such as golf glove shafts, tennis racquets, and fishing lines.
상기한 문제를 해결하기 위해서 본 발명에서는 섬유강화플라스틱을 이용하여 내부의 중공에 칸막이가 존재하는 제품을 제조하는 방법을 제공하는 것을 목적으로 한다. 또한, 상기한 문제를 해결하기 위해서 본 발명에서는 섬유강화플라스틱을 이용하여 내부의 중공에 격벽이 존재하는 제품을 제조하기 위한 금형장치를 제공하는 것을 목적으로 한다.In order to solve the above-mentioned problems, it is an object of the present invention to provide a method of manufacturing a product in which a partition is provided in a hollow space using a fiber-reinforced plastic. In order to solve the above-mentioned problems, the present invention provides a mold apparatus for producing a product having a partition wall in a hollow space using a fiber-reinforced plastic.
상기한 목적을 달성하기 위해서 본 발명은 내부에 격벽이 존재하는 소정의 섬유강화플라스틱 제품의 제조에 사용되는 금형장치에 있어서, 자유롭게 굽어지는 재질의 박막을 이용하여, 내부에 기체가 포함되고, 상기 기체의 내부 압력에 의하여 상기 제품의 격벽 사이의 중공의 형상이 유지되며, 상기 제품의 격벽 사이의 중공에 위치하는 에어몰드를 포함하는 복수의 내부금형; 및 상기 각각의 내부금형에 경화되지 않은 섬유강화플라스틱을 감은 후 상기 섬유강화플라스틱을 감은층이 상기 제품의 형상이 되도록 상기 섬유강화플라스틱을 감은 각각의 내부금형이 연결된 중간제품의 상태에서 소정의 온도에서 상기 중간제품의 외부에 소정의 압력을 가할 수 있는 외부 금형;을 포함하는 것을 특징으로 하는 내부에 격벽이 존재하는 섬유강화플라스틱 제품의 제조에 사용되는 금형장치를 제공한다.In order to accomplish the above object, the present invention provides a mold apparatus for use in manufacturing a predetermined fiber-reinforced plastic product having a partition wall therein, wherein a gas is contained in the mold using a thin film of freely bending material, A plurality of inner molds including an air mold which is held in a hollow shape between the partition walls of the product by internal pressure of the gas and is located in the hollow between the partition walls of the product; Reinforcing plastic is wound around each of the inner molds, and then the layer of the fiber-reinforced plastic is wound around the inner mold, And an outer mold capable of applying a predetermined pressure to the outside of the intermediate product at a predetermined position of the intermediate product. The present invention also provides a mold apparatus used for manufacturing a fiber-reinforced plastic product having a partition wall therein.
이상 설명한 바와 같이, 본 발명에 따르면 가벼운 칸막이를 이용하여 일반적인 내부금형을 대체하고 있으므로, 섬유강화플라스틱의 경화가 끝난 후 내부금형을 사용된 에어몰드를 제거하지 않아도 제품의 무게 등에 큰 영향을 주지 않고, 섬유강화플라스틱으로 제작되는 제품 내부의 중공에 칸막이를 설치할 수 있게 되므로 제작된 제품의 강도를 크게 향상시킬 수 있는 장점이 있다.As described above, according to the present invention, since a lightweight partition is used to replace a general internal mold, the weight of the product is not greatly affected by the removal of the air mold used after the curing of the fiber- , Since it is possible to install a partition in the hollow inside the product made of fiber reinforced plastic, the strength of the manufactured product can be greatly improved.
도 1은 종래 기술에 의한 문제점을 설명하기 위한 도면BRIEF DESCRIPTION OF THE DRAWINGS FIG.
상기한 목적을 달성하기 위해서 본 발명은 내부에 칸막이가 존재하는 소정의 섬유강화플라스틱 제품의 제조방법에 있어서, 자유롭게 굽어지는 재질의 박막을 이용하여, 내부에 기체가 포함되고, 상기 기체의 내부 압력에 의하여 상기 제품의 칸막이 사이의 중공의 형상이 유지되며, 상기 제품의 칸막이 사이의 중공에 위치하는 에어몰드를 포함하는 복수의 내부금형을 제작하는 단계; 상기 각각의 내부금형을 경화되지 않은 상기 섬유강화플리스틱을 이용하여 감는 단계; 상기 섬유강화플라스틱이 감아진 내부금형이 상기 제품의 형태를 가지도록 연결하는 단계; 및 상기 연결된 섬유강화플라스틱을 소정의 온도 조건하에서 경화시키는 단계;를 포함하는 것을 특징으로 하는 내부에 격벽이 존재하는 섬유강화플라스틱 제품의 제조방법을 제공한다.In order to accomplish the above object, the present invention provides a method for manufacturing a predetermined fiber-reinforced plastic product having a partition inside, comprising the steps of: using a thin film of a freely bending material; Forming a plurality of internal molds including an air mold positioned in the hollow between the partitions of the product, the hollow shape of which is maintained between the partitions of the product; Winding each of the inner molds with the non-hardened fiber reinforced plastic; Connecting the inner mold with the fiber-reinforced plastic wrapped to have the shape of the product; And curing the connected fiber-reinforced plastic under a predetermined temperature condition. The present invention also provides a method of manufacturing a fiber-reinforced plastic product having an internal partition wall.
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