KR100241232B1 - Composite shaft with thermal shrinkage tube and method producing it - Google Patents

Composite shaft with thermal shrinkage tube and method producing it Download PDF

Info

Publication number
KR100241232B1
KR100241232B1 KR1019970047553A KR19970047553A KR100241232B1 KR 100241232 B1 KR100241232 B1 KR 100241232B1 KR 1019970047553 A KR1019970047553 A KR 1019970047553A KR 19970047553 A KR19970047553 A KR 19970047553A KR 100241232 B1 KR100241232 B1 KR 100241232B1
Authority
KR
South Korea
Prior art keywords
shrink tube
heat shrink
composite material
heat
fiber reinforced
Prior art date
Application number
KR1019970047553A
Other languages
Korean (ko)
Other versions
KR19990025778A (en
Inventor
이대길
최진경
조덕현
오제훈
김영구
장승환
방경근
Original Assignee
윤덕용
한국과학기술원
Priority date (The priority date is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the date listed.)
Filing date
Publication date
Application filed by 윤덕용, 한국과학기술원 filed Critical 윤덕용
Priority to KR1019970047553A priority Critical patent/KR100241232B1/en
Priority to US09/104,109 priority patent/US6336986B1/en
Publication of KR19990025778A publication Critical patent/KR19990025778A/en
Application granted granted Critical
Publication of KR100241232B1 publication Critical patent/KR100241232B1/en

Links

Images

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
    • B29C70/06—Fibrous reinforcements only
    • 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
    • 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
    • C—CHEMISTRY; METALLURGY
    • C08—ORGANIC MACROMOLECULAR COMPOUNDS; THEIR PREPARATION OR CHEMICAL WORKING-UP; COMPOSITIONS BASED THEREON
    • C08L—COMPOSITIONS OF MACROMOLECULAR COMPOUNDS
    • C08L23/00—Compositions of homopolymers or copolymers of unsaturated aliphatic hydrocarbons having only one carbon-to-carbon double bond; Compositions of derivatives of such polymers
    • C08L23/02—Compositions of homopolymers or copolymers of unsaturated aliphatic hydrocarbons having only one carbon-to-carbon double bond; Compositions of derivatives of such polymers not modified by chemical after-treatment
    • B—PERFORMING OPERATIONS; TRANSPORTING
    • B29—WORKING OF PLASTICS; WORKING OF SUBSTANCES IN A PLASTIC STATE IN GENERAL
    • B29K—INDEXING SCHEME ASSOCIATED WITH SUBCLASSES B29B, B29C OR B29D, RELATING TO MOULDING MATERIALS OR TO MATERIALS FOR MOULDS, REINFORCEMENTS, FILLERS OR PREFORMED PARTS, e.g. INSERTS
    • B29K2023/00—Use of polyalkenes or derivatives thereof as moulding material

Abstract

본 발명은 복합재료 샤프트 제작시 폴리에틸렌이나 폴리프로필렌 재질의 열수축튜브를 사용함으로써, 제작공정을 단순화하고 생산단가를 절감할 수 있는 열수축튜브를 이용한 복합재료 샤프트 및 그 제조방법을 제공하는 데 그 목적이 있다.The present invention is to provide a composite shaft and a manufacturing method using a heat shrink tube that can simplify the manufacturing process and reduce the production cost by using a heat shrink tube made of polyethylene or polypropylene when manufacturing the composite shaft. have.

본 발명에 따르면, 이형제가 도포된 맨드럴(20)의 표면에 장섬유 강화 복합재료(30; continuous fiber reinforced composites)를 적층하는 적층단계(S1)와, 상기 적층단계(S1)에서 맨드럴(20)의 표면에 적층된 장섬유 강화 복합재료(30)의 둘레에 열을 가하면 수축되는 가교폴리올레핀, 폴리에틸렌, 폴리프로필렌 중의 어느 하나의 재질로 형성된 열수축튜브(10)를 삽입하는 삽입단계(S2)와, 오븐에서 상기 열수축튜브(10)를 가열하여 수지(resin)가 상기 장섬유 강화 복합재료(30)의 사이에 충진되어 상기 장섬유 강화 복합재료(30)를 경화시키는 경화단계(S3) 및, 상기 경화단계(S3)에서 경화된 상기 장섬유 강화 복합재료(30)와 상기 맨드럴(20)을 분리하는 분리단계(S4)를 포함하는 것을 특징으로 하는 열수축 튜브를 이용한 복합재료 샤프트의 제조방법이 제공된다.According to the present invention, the laminating step S1 of laminating continuous fiber reinforced composites 30 on the surface of the mandrel 20 to which the release agent is applied, and the mandrel in the laminating step S1. Insertion step (S2) of inserting the heat shrink tube 10 made of any one of crosslinked polyolefin, polyethylene, polypropylene shrinkage when heat is applied around the long fiber reinforced composite material 30 laminated on the surface of the 20) And a curing step (S3) of heating the heat shrink tube 10 in an oven to fill a resin between the long fiber reinforced composite material 30 to cure the long fiber reinforced composite material 30. Preparation of a composite shaft using a heat shrink tube, characterized in that it comprises a separation step (S4) for separating the long fiber reinforced composite material 30 and the mandrel 20 cured in the curing step (S3) A method is provided.

Description

열수축튜브를 이용한 복합재료 샤프트 및 그 제조방법Composite shaft using heat shrink tube and its manufacturing method

본 발명은 열수축튜브를 이용한 복합재료 샤프트 및 그 제조방법에 관한 것이며, 특히, 낚시대나 골프채 같은 스포츠 용품이나 필름용 롤러, 자동차용 동력전달축, 공작기계의 주축과 같은 토크를 받는 구조에 사용되는 열수축튜브를 이용한 복합재료 샤프트 및 그 제조방법에 관한 것이다.The present invention relates to a composite shaft using a heat-shrinkable tube and a method for manufacturing the same, in particular, used in a structure that receives torque such as sports goods such as fishing rods and golf clubs, rollers for films, power transmission shafts for automobiles, and spindles of machine tools The present invention relates to a composite shaft using a heat shrink tube and a method of manufacturing the same.

제1도에 도시된 바와 같이, 종래기술에 따른 복합재료 샤프트를 제조하기 위해서는, 먼저, 이형제가 도포된 원형 단면이나 다각형 단면을 갖는 맨드럴의 표면에 장섬유 강화 복합재료(continuous fiber reinforced composites)를 적층한 후, 폴리프로필렌 또는 폴리에틸렌 재질을 가지는 고분자 압착필름을 감는다. 그리고, 고온용 나이론 필름으로 제작한 진공백(vacuum bag)으로 복합재료 및 맨드럴을 감싸고 진공펌프를 이용하여 내부를 진공상태로 유지시키면서 외부에서 고온·고압을 가하여 복합재료를 경화시킨다.As shown in FIG. 1, in order to manufacture a composite shaft according to the prior art, first, continuous fiber reinforced composites are formed on a surface of a mandrel having a circular cross section or polygonal cross section coated with a release agent. After laminating, and wound the polymer pressing film having a polypropylene or polyethylene material. Then, the composite material and the mandrel are wrapped with a vacuum bag made of a high temperature nylon film, and the inside is kept in a vacuum state using a vacuum pump, and the high temperature and high pressure are applied from the outside to cure the composite material.

이렇게 장섬유 강화 복합재료를 경화시킬 때 진공백과 압착필름을 사용하고 압력을 가하는 이유는 내부에 발생하는 수증기 및 공기 등의 각종 가스를 진공펌프와 고압으로 제거하고, 레진이 섬유에 고르게 침투하여 경화가 완료된 복합재료 샤프트의 기계적인 물성을 높이기 위해서이다. 이렇게 복합재료가 경화되면, 경화된 장섬유 강화 복합재료 내측에 위치하는 맨드럴을 제거하여 복합재료 샤프트를 제조한다.When the long fiber reinforced composite material is cured, a vacuum bag and a compressed film are used and pressure is applied to remove various gases such as water vapor and air generated by the vacuum pump and high pressure, and the resin penetrates the fiber evenly. To increase the mechanical properties of the finished composite shaft. When the composite material is cured, the composite shaft is manufactured by removing the mandrel located inside the cured long fiber reinforced composite material.

그러나, 앞서 설명한 바와 같은 종래기술에 따른 복합재료 샤프트를 제조하기 위해서는 1회용으로 사용된 후 폐기되는 진공백이 사용되므로 그 제작비용이 상승된다는 문제점이 있다.However, in order to manufacture the composite shaft according to the prior art as described above, there is a problem that the manufacturing cost is increased because the vacuum bag used after being used for one time is used.

또한, 종래기술에 따른 복합재료 샤프트를 제조하기 위해서는 보통 6~10기압의 압력과 온도가 필요하며, 이런 압력과 온도의 조절이 가능한 오트클레이브(autoclave)가 사용되는데, 이런 오토클레이브는 고압용기로서 제작비가 많이 소요되고 운영비가 많이 든다는 단점이 있다.In addition, in order to manufacture a composite shaft according to the prior art, a pressure and temperature of 6 to 10 atm are usually required, and an autoclave capable of controlling such pressure and temperature is used, and such an autoclave is used as a high pressure container. There is a disadvantage in that it takes a lot of production costs and a lot of operating costs.

또한, 종래의 복합재료 샤프트는 수분침투를 차단시키고 내충격성을 높이기 위하여 고가의 방수용 에폭시 페인트와 우레탄 페인트로 부가적으로 코팅하여 사용해야 하므로 많은 비용이 드는 문제점이 있다.In addition, the conventional composite shaft has a costly problem because it must be used by additionally coated with expensive waterproof epoxy paint and urethane paint in order to block moisture penetration and increase impact resistance.

본 발명은 앞서 설명한 바와 같은 종래기술의 문제점을 해결하기 위하여 안출된 것으로서, 복합재료 샤프트 제작시 폴리에틸렌이나 폴리프로필렌 재질의 열수축튜브를 사용함으로써, 제작공정을 단순화하고 생산단가를 절감할 수 있는 열수축튜브를 이용한 복합재료 샤프트 및 그 제조방법을 제공하는 데 그 목적이 있다.The present invention has been made to solve the problems of the prior art as described above, by using a heat shrink tube made of polyethylene or polypropylene when manufacturing a composite shaft, a heat shrink tube that can simplify the manufacturing process and reduce production costs An object of the present invention is to provide a composite shaft and a method of manufacturing the same.

제1도는 종래기술에 따른 복합재료 샤프트의 제조방법을 설명하기 위한 공정도이고,1 is a process chart for explaining a method for manufacturing a composite shaft according to the prior art,

제2도는 본 발명의 한 실시예에 따른 열수축튜브를 이용한 복합재료 샤프트의 단면도이고,2 is a cross-sectional view of the composite shaft using a heat shrink tube according to an embodiment of the present invention,

제3도는 제2도에 도시된 열수축튜브를 이용한 복합재료 샤프트의 제조과정을 설명하기 위한 분해사시도이고,3 is an exploded perspective view for explaining the manufacturing process of the composite shaft using the heat shrink tube shown in FIG.

제4도는 제2도에 도시된 열수축튜브를 이용한 복합재료 샤프트의 제조과정을 설명하기 위한 공정도이며,4 is a process chart for explaining the manufacturing process of the composite shaft using the heat shrink tube shown in FIG.

제5도는 제2도에 도시된 열수축튜브를 이용한 복합재료 샤프트의 열수축튜브의 특성을 설명하기 위한 단면도.5 is a cross-sectional view for explaining the characteristics of the heat shrink tube of the composite shaft using the heat shrink tube shown in FIG.

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

10 : 열수축튜브 20 : 맨드럴10: heat shrink tube 20: mandrel

30 : 복합재료30: composite material

앞서 설명한 바와 같은 목적을 달성하기 위한 본 발명에 따르면, 낚시대나 골프채 같은 스포츠 용품이나 자동차용 동력전달축에 사용되는 열수축튜브를 이용한 복합재료 샤프트에 있어서, 이형제가 도포된 맨드럴의 표면에 장섬유 강화 복합재료(continuous fiber reinforced composites)를 적층하는 적층단계와, 상기 적층단계에서 맨드럴의 표면에 적층된 장섬유 강화 복합재료의 둘레에 열을 가하면 수축되는 가교폴리올레핀, 폴리에틸렌, 폴리프로필렌 중의 어느 하나의 재질로 형성된 열수축튜브를 삽입하는 삽입단계와, 오븐에서 상기 열수축튜브를 가열하여 수지(resin)가 상기 장섬유 강화 복합재료의 사이에 충진되어 상기 장섬유 강화 복합재료를 경화시키는 경화단계 및, 상기 경화단계에서 경화된 상기 장섬유 강화 복합재료와 상기 맨드럴을 분리하는 분리단계를 포함하는 것을 특징으로 하는 열수축튜브를 이용한 복합재료 샤프트의 제조방법에 의해 제조된 열수축튜브를 이용한 복합재료 샤프트가 제공된다.According to the present invention for achieving the object as described above, in the composite shaft using a heat-shrink tube used in sports equipment such as fishing rods and golf clubs or power transmission shaft for automobiles, long fibers on the surface of the mandrel coated with the release agent Any one of a lamination step of laminating continuous fiber reinforced composites, and crosslinked polyolefin, polyethylene, and polypropylene which contract when heat is applied around the long fiber reinforced composite material laminated on the surface of the mandrel in the lamination step. An insertion step of inserting a heat shrink tube formed of a material, and a curing step of heating the heat shrink tube in an oven to fill a resin between the long fiber reinforced composite material to cure the long fiber reinforced composite material; Separating the long fiber reinforced composite material and the mandrel cured in the curing step The composite shaft with the heat-shrinkable tube produced by the process of the composite material shaft using a heat-shrinkable tube, characterized in that it comprises a re-phase is provided.

아래에서, 본 발명에 따른 열수축튜브를 이용한 복합재료 샤프트 및 그 제조방법의 양호한 실시예를 첨부한 도면을 참조로 하여 상세히 설명하겠다.In the following, with reference to the accompanying drawings a preferred embodiment of a composite shaft and a manufacturing method using a heat shrink tube according to the present invention will be described in detail.

도면에서, 제2도는 본 발명의 한 실시예에 따른 열수축튜브를 이용한 복합재료 샤프트의 단면도이고, 제3도는 제2도에 도시된 열수축튜브를 이용한 복합재료 샤프트의 제조과정을 설명하기 위한 분해사시도이고, 제4도는 제2도에 도시된 열수축튜브를 이용한 복합재료 샤프트의 제조과정을 설명하기 위한 공정도이며, 제5도는 제2도에 도시된 열수축튜브를 이용한 복합재료 샤프트의 열수축튜브의 특성을 설명하기 위한 단면도이다.2 is a cross-sectional view of the composite shaft using a heat shrink tube according to an embodiment of the present invention, Figure 3 is an exploded perspective view for explaining the manufacturing process of the composite shaft using the heat shrink tube shown in FIG. 4 is a process chart for explaining the manufacturing process of the composite shaft using the heat shrink tube shown in FIG. 2, Figure 5 is a characteristic of the heat shrink tube of the composite shaft using the heat shrink tube shown in FIG. It is sectional drawing for illustration.

본 발명의 열수축튜브를 이용한 복합재료 샤프트에 사용되는 열축튜브(10)는 히트건(heat gun)으로 직접 가열 수축시키거나 뜨거운 오븐내에서 가열수축시키면, 반경이 약 50% 이상 수축되면서 길이는 약 10% 이내로 수축되는 성질을 가지는 가교폴리올레핀, 폴리에틸렌 및 폴리프로필렌 재질로 제작된다.The heat shrink tube 10 used in the composite shaft using the heat shrink tube of the present invention is directly contracted by a heat gun or heat contracted in a hot oven. It is made of cross-linked polyolefin, polyethylene and polypropylene material having shrinkage property within 10%.

아래에서, 이런 특징을 갖는 열수축튜브(10)에 대해 도면을 참조하여 상세히 설명하겠다.In the following, a heat shrink tube 10 having such a feature will be described in detail with reference to the drawings.

제5도에 도시된 바와 같이, 반경이 r이고 두께가 t인 열수축튜브(10)가 온도상승에 의하여 반경방향으로 50% 수축되면, 길이 방향의 수축을 무시하였을 경우, 반경은 r/2 두께는 2t로 변화되는 것을 알 수 있다. 이런 특징으로 이용하여 예를들어, 외부 반경이 2r/3인 복합재료의 표면에 열수축튜브(10)를 배치한 후 압력을 가할 경우, 열수축튜브(10)는 가상 원주방향 변위 δ를 다음과 같이 가지게 된다.As shown in FIG. 5, when the heat shrink tube 10 having a radius r and a thickness t shrinks 50% in the radial direction due to the temperature rise, when the longitudinal shrinkage is ignored, the radius is r / 2 thick. It can be seen that is changed to 2t. Using this feature, for example, when the heat shrink tube 10 is placed on the surface of the composite material having an outer radius of 2r / 3, and then pressurized, the heat shrink tube 10 has a virtual circumferential displacement δ as follows. Have.

[수학식 1][Equation 1]

Figure kpo00002
Figure kpo00002

(1)식으로 표시되는 가상 원주방향 변위 δ를 열수축튜브(10)에 가하기 위한 원주방향의 응력 σ는 열수축튜브(10)의 영률을 E라고 하면,In the circumferential stress sigma for applying the virtual circumferential displacement δ represented by the equation (1) to the heat shrink tube 10, the Young's modulus of the heat shrink tube 10 is E,

[수학식 2][Equation 2]

Figure kpo00003
Figure kpo00003

가 된다.Becomes

따라서, 복합재료표면에 수직으로 작용하는 압력 P는Therefore, the pressure P acting perpendicular to the surface of the composite

[수학식 3][Equation 3]

Figure kpo00004
Figure kpo00004

가 된다.Becomes

즉, 폴리에틸렌의 상온에서의 E값은 300㎫ 정도이나, 경화온도에서는 값이 떨어져 100㎫ 정도라고 가정하면, 열수축튜브(10)의 두께/반경(t/r)이 대게 0.01정도이므로 열수축튜브(10)에 의하여 복합재료표면에 가해지는 압력은 외부에서 7.5 기압을 가하는 효과와 동일하다. 만약, 압력의 크기를 조절하여 수지의 함유량을 변화시키려면 열수축튜브(10)와 복합재료의 반경의 차 및 열수축튜브(10)의 두께 대반경비(t/r)를 조절하여 이를 실현할 수 있다.That is, the E value at room temperature of polyethylene is about 300 MPa, but the value is lowered at about 100 MPa at the curing temperature. Therefore, since the thickness / radius (t / r) of the heat shrink tube 10 is usually about 0.01, the heat shrink tube ( The pressure applied to the surface of the composite material by 10) is the same as the effect of applying 7.5 atmospheres from the outside. In order to change the content of the resin by adjusting the magnitude of the pressure, the difference between the radius of the heat shrink tube 10 and the composite material and the thickness ratio of the heat shrink tube 10 (t / r) may be adjusted.

앞서 설명한 바와 같은 특징을 갖는 열수축튜브(10)를 사용하여 열수축튜브를 이용한 복합재료 샤프트의 제조방법에 대하여 설명하겠다.The manufacturing method of the composite shaft using the heat shrink tube using the heat shrink tube 10 having the characteristics as described above will be described.

먼저, 테프론 코팅 및 테프론 필름적층 등에 의해 이형처리된 맨드럴(20)의 표면에 복합재료(30)를 원하는 각도로 적층하여 감는다. 그리고, 열수축튜브(10)를 맨드럴(20)에 감아놓은 복합재료(30)에 끼워 넣는다. 이 때, 열수축튜브(10)의 수축량이 50%가량 되므로 감아놓은 복합재료(30) 외경의 1.3~1.7배 되는 내경의 열수축튜브(10)를 사용한다. 그런 다음, 온도조절이 가능한 오븐에서 원하는 경화사이클로 복합재료(30)를 경화시키면 열수축튜브(10)가 수축을 하여 복합재료(30)의 내부의 가스를 밀어내고, 열수축튜브(10)에 남아있는 잉여 레진을 열수축튜브(10)의 양끝으로 짜주어 복합재료(30)의 층간에 압밀(consolidation)을 도와준다. 이 때, 열수축튜브(10)의 수축을 통해 상당량의 압력이 가해지므로 압축공기를 복합재료(30) 주변에 가할 필요가 없다. 이 때, 120℃의 경화 복합재료(30)는 폴리에틸렌 열수축튜브(10)를 사용할 수 있고, 180℃의 경화 복합재료(30)는 폴리프로필렌 열수축튜브(10)를 사용할 수 있다.First, the composite material 30 is laminated and wound on a surface of the mandrel 20 released by Teflon coating and Teflon film lamination at a desired angle. Then, the heat shrink tube 10 is inserted into the composite material 30 wound around the mandrel 20. At this time, since the shrinkage of the heat shrink tube 10 is about 50%, a heat shrink tube 10 having an inner diameter of 1.3 to 1.7 times the outer diameter of the wound composite material 30 is used. Then, when the composite material 30 is cured with a desired curing cycle in an oven capable of temperature control, the heat shrink tube 10 contracts to push out the gas inside the composite material 30 and remains in the heat shrink tube 10. The excess resin is squeezed to both ends of the heat shrink tube 10 to help consolidation between the layers of the composite material 30. At this time, since a considerable amount of pressure is applied through the contraction of the heat shrink tube 10, there is no need to apply compressed air around the composite material 30. In this case, the 120 ° C. cured composite material 30 may use a polyethylene heat shrink tube 10, and the 180 ° C. cured composite material 30 may use a polypropylene heat shrink tube 10.

그리고, 최종적으로 복합재료(30)의 경화가 완료되고 맨드럴(20)을 제거하면 외부에 열수축튜브(10)가 코팅되어 부가적인 내수, 내화학, 절연처리가 필요없는 복합재료 샤프트가 제조된다.Finally, when the curing of the composite material 30 is completed and the mandrel 20 is removed, the heat shrink tube 10 is coated on the outside to produce a composite shaft that does not require additional water resistance, chemical resistance, and insulation treatment. .

앞서 설명한 실시예에서는 맨드럴을 사용하여 복합재료 샤프트를 제조하는 방법을 설명했지만, 맨드럴 대신 금속튜브의 표면에 복합재료를 적층한 다음 일체로 경화시킨 하이브리드(hybrid) 복합재료 샤프트를 제작할 수도 있다.In the above-described embodiment, a method of manufacturing a composite shaft using a mandrel has been described, but instead of the mandrel, a hybrid composite shaft in which a composite material is laminated on a surface of a metal tube and then hardened integrally may be manufactured. .

앞서 설명한 바와 같은 제조방법으로 제조된 열수축튜브를 이용한 복합재료 샤프트는 낚시대나 골프채 같은 스포츠 용품이나 필름용 롤러, 자동차용 동력전달축, 공작기계의 주축과 같은 토크를 받는 구조에 사용된다.The composite shaft using the heat shrink tube manufactured by the manufacturing method as described above is used in a structure that receives a torque such as sports goods such as fishing rods or golf clubs, rollers for films, power transmission shafts for automobiles, and main shafts of machine tools.

앞서 상세히 설명한 바와 같이, 본 발명의 열수축튜브를 이용한 복합재료 샤프트를 제조하기 위해서는, 종래기술에서처럼 1회용 진공백이나 오트클레이브를 사용하지 않아도 되므로 제작이 용이할 뿐만 아니라, 제조비용이 저렴하다는 장점이 있다.As described in detail above, in order to manufacture the composite shaft using the heat-shrink tube of the present invention, since it is not necessary to use a disposable vacuum bag or an autoclave as in the prior art, it is easy to manufacture and the advantage of low manufacturing cost have.

또한, 본 발명의 열수축튜브를 이용한 복합재료 샤프트는 열수축튜브에 의해 표면이 코팅처리되어 있으므로 내열성, 내화학성 및 난연성이 우수하다.In addition, the composite shaft using the heat shrink tube of the present invention is excellent in heat resistance, chemical resistance and flame resistance because the surface is coated by the heat shrink tube.

또한, 본 발명의 열수축튜브를 이용한 복합재료 샤프트는 사용자가 원하는 색상의 열수축튜브로 제조가능하므로, 사용자의 취향에 맞는 낚시대 및 골프채 등의 제품을 만들 수 있다.In addition, the composite shaft using the heat shrink tube of the present invention can be manufactured by the heat shrink tube of the user's desired color, it is possible to make products such as fishing rods and golf clubs according to the user's taste.

또한, 본 발명의 열수축튜브를 이용한 복합재료 샤프트는 종래기술에서처럼 수분침투를 차단시키고 내충격성을 높이기 위하여 고가의 방수용 에폭시 페인트와 우레탄 페인트를 사용하여 도장하지 않아도 되므로 매우 경제적이다.In addition, the composite shaft using the heat-shrink tube of the present invention is very economical because it does not need to use expensive waterproof epoxy paint and urethane paint to block moisture penetration and increase impact resistance as in the prior art.

이상에서 본 발명의 열수축튜브를 이용한 복합재료 샤프트 및 그 제조방법에 대한 기술사상을 첨부도면과 함께 서술하였지만 이는 본 발명의 가장 양호한 실시예를 예시적으로 설명한 것이지 본 발명을 한정하는 것은 아니다. 또한, 이 기술분야의 통상의 지식을 가진 자이면 누구나 본 발명의 기술사상의 범주를 이탈하지 않는 범위내에서 다양한 변형 및 모방이 가능함은 명백한 사실이다.Although the technical idea of the composite shaft using the heat-shrinkable tube of the present invention and a method for manufacturing the same have been described with the accompanying drawings, this is for illustrative purposes only and not for limiting the present invention. In addition, it is obvious that any person skilled in the art can make various modifications and imitations without departing from the scope of the technical idea of the present invention.

Claims (1)

이형제가 도포된 맨드럴(20)의 표면에 장섬유 강화 복합재료(30; continuous fiber reinforced composites)를 적층단계(S1)와, 상기 적층단계(S1)에서 맨드럴(20)의 표면에 적층된 장섬유 강화 복합재료(30)의 둘레에 열을 가하면 수축되는 열수축튜브(10)를 삽입하는 삽입단계(S2)와, 오븐에서 상기 열수축튜브(10)를 가열하여 수지(resin)가 상기 장섬유 강화 복합재료(30)의 사이에 충진되어 상기 장섬유 강화 복합재료(30)를 경화시키는 경화단계(S3) 및, 상기 경화단계(S3)에서 경화된 상기 장섬유 강화 복합재료(30)와 상기 맨드럴(20)을 분리하는 분리단계(S4)를 포함하는 열수축튜브를 이용한 복합재료 샤프트의 제조방법에 있어서, 상기 열수축튜브(10)는 열을 가하면 반경이 50% 이상 수축되면서 길이는 10%이내로 수축되는 성질을 갖는 가교폴리올레핀, 폴리에틸렌 및 폴리프로필렌 중의 어느 하나의 재질로 형성되고, 상기 열수축튜브(10)의 내경은 상기 복합재료(30) 외경의 1.3~1.7배 되는 것을 특징으로 하는 열수축튜브를 이용한 복합재료 샤프트의 제조방법.Continuous fiber reinforced composites (30) were laminated on the surface of the mandrel 20 to which the release agent was applied (S1), and the lamination step (S1) laminated on the surface of the mandrel 20 Insertion step (S2) for inserting the heat shrink tube 10 is shrunk when heat is applied around the long fiber reinforced composite material 30, and the heat shrink tube 10 by heating in the oven (resin) the long fiber Filled between the reinforced composite material 30 and the curing step (S3) for curing the long fiber reinforced composite material 30, and the long fiber reinforced composite material 30 and the hardened in the curing step (S3) In the method of manufacturing a composite shaft using a heat shrink tube including a separation step (S4) for separating the mandrel 20, the heat shrink tube 10 is 10% in length while the radius shrinks more than 50% when heat is applied Cross-linked polyolefins, polyethylene and polyprop with properties shrinking within Which is formed from a single material, the inner diameter of the heat-shrinkable tube (10) A method of manufacturing a composite shaft with a heat-shrinkable tube, characterized in that 1.3 ~ 1.7 times the outer diameter of the composite material (30) in the alkylene.
KR1019970047553A 1997-07-14 1997-09-18 Composite shaft with thermal shrinkage tube and method producing it KR100241232B1 (en)

Priority Applications (2)

Application Number Priority Date Filing Date Title
KR1019970047553A KR100241232B1 (en) 1997-09-18 1997-09-18 Composite shaft with thermal shrinkage tube and method producing it
US09/104,109 US6336986B1 (en) 1997-07-14 1998-06-25 Method for producing hybrid driveshaft

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
KR1019970047553A KR100241232B1 (en) 1997-09-18 1997-09-18 Composite shaft with thermal shrinkage tube and method producing it

Publications (2)

Publication Number Publication Date
KR19990025778A KR19990025778A (en) 1999-04-06
KR100241232B1 true KR100241232B1 (en) 2000-02-01

Family

ID=19521370

Family Applications (1)

Application Number Title Priority Date Filing Date
KR1019970047553A KR100241232B1 (en) 1997-07-14 1997-09-18 Composite shaft with thermal shrinkage tube and method producing it

Country Status (1)

Country Link
KR (1) KR100241232B1 (en)

Cited By (5)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
KR100631473B1 (en) * 2004-07-29 2006-11-15 주식회사 화승알앤에이 a manufacture method of a rubber hose for the car
DE112008000564T5 (en) 2007-04-10 2010-01-07 Ryu, Choong O., Gimhae Connector and this composite drive shaft assembly
DE112008000697T5 (en) 2007-04-10 2010-02-11 Ryu, Choong O., Gimhae A mold for producing a compound drive shaft and a compound drive shaft made using the mold
US8455123B2 (en) 2006-07-18 2013-06-04 Lg Chem, Ltd. Safety switch using heat shrinkage tube and secondary battery including the same
KR101464586B1 (en) * 2013-04-24 2014-11-24 여준철 Tape, tube for golf club shaft and golf club having the same

Families Citing this family (2)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
KR100374884B1 (en) * 2000-09-25 2003-03-06 정성식 a manufacturing method hula hoop
US11473343B2 (en) 2019-03-15 2022-10-18 Ford Global Technologies, Llc Actuator assembly for a vehicle door having a clip-on wiper for preventing infiltration of foreign matertal into the cable housing

Citations (1)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
JPS61115618U (en) * 1984-12-28 1986-07-22

Patent Citations (1)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
JPS61115618U (en) * 1984-12-28 1986-07-22

Cited By (6)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
KR100631473B1 (en) * 2004-07-29 2006-11-15 주식회사 화승알앤에이 a manufacture method of a rubber hose for the car
US8455123B2 (en) 2006-07-18 2013-06-04 Lg Chem, Ltd. Safety switch using heat shrinkage tube and secondary battery including the same
DE112008000564T5 (en) 2007-04-10 2010-01-07 Ryu, Choong O., Gimhae Connector and this composite drive shaft assembly
DE112008000697T5 (en) 2007-04-10 2010-02-11 Ryu, Choong O., Gimhae A mold for producing a compound drive shaft and a compound drive shaft made using the mold
US8459978B2 (en) 2007-04-10 2013-06-11 Choong O Ryu Method for manufacturing a composite drive shaft manufactured using mold
KR101464586B1 (en) * 2013-04-24 2014-11-24 여준철 Tape, tube for golf club shaft and golf club having the same

Also Published As

Publication number Publication date
KR19990025778A (en) 1999-04-06

Similar Documents

Publication Publication Date Title
US3962394A (en) Method for molding fiber reinforced composite tube
US5698055A (en) Method of manufacturing composite tube
US5071506A (en) Equipment for making composite tubes including an inflatable heated bladder and a composite mold having a negative coefficient of thermal expansion
JP3326456B2 (en) Toothed belt structure mainly formed of thermoplastic material and method of manufacturing the same
KR100241232B1 (en) Composite shaft with thermal shrinkage tube and method producing it
US20030037860A1 (en) Reinforced thermoplastic storage vessel manufacture
US6143236A (en) Method for manufacturing composite shafts with injection molded, rigidized bladder with varying wall thickness
AU2002228694A1 (en) Method to reinforce thin wall thermoplastic storage vessels
TW202116536A (en) Method for producing a positive-locking load application for rod-shaped fiber composite structures, and the design thereof
EP0311400B1 (en) Process and equipment for making composite tubes
US3999912A (en) Means for molding fiber reinforced composite tube
CA1324243C (en) Method and apparatus for forming fibre reinforced articles
JPH0361783A (en) Tube of compound material with fibrous thermoplastic coating and method of manufacturing the same
GB2089761A (en) Heat shrinking plastics member onto filament/resin composite
JPS61220828A (en) Manufacture of curved pipe, made of fiber reinforced plastic and having square section
CA2258068A1 (en) Method for preparing a fabric substantially consisting of carbon fibers
JPH09277390A (en) Manufacture of frp molded product and manufacture of frp made pipe
JPH0451325B2 (en)
KR102294301B1 (en) Method of manufacturing shaft of golf club by using autoclave
JPH04364929A (en) Method for molding composite material
JPH02150331A (en) Blow molded object of curable resin and blow molding process
GB2262470A (en) Process and apparatus for the formation of elongate composite pultrusions
US5302338A (en) Method for hooping and maintaining in compression a core by a sheath made of a composite material
JPH0615750A (en) Method for molding fiber reinforced resin pipe having bent part and fiber reinforced resin pipe
JPH0321434A (en) Manufacture of fiber reinforced plastic pipe

Legal Events

Date Code Title Description
A201 Request for examination
E902 Notification of reason for refusal
E701 Decision to grant or registration of patent right
GRNT Written decision to grant
FPAY Annual fee payment

Payment date: 20061207

Year of fee payment: 9

LAPS Lapse due to unpaid annual fee