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1. (WO2018199365) METHOD FOR MANUFACTURING CARBON FIBER-REINFORCED COMPOSITE MATERIAL SPRING, AND CARBON FIBER-REINFORCED COMPOSITE MATERIAL SPRING MANUFACTURED THEREBY

Pub. No.:    WO/2018/199365    International Application No.:    PCT/KR2017/004581
Publication Date: Fri Nov 02 00:59:59 CET 2018 International Filing Date: Sat Apr 29 01:59:59 CEST 2017
IPC: B29C 70/42
B29C 70/54
B29C 53/82
B29K 105/12
B29K 307/04
B29L 31/00
Applicants: WIN & WIN CO. LTD.
윈엔윈(주)
WIAWIS CO., LTD.
위아위스 주식회사
CLEAN & SCIENCE CO., LTD.
(주)크린앤사이언스
Inventors: PARK, Kyunglae
박경래
PARK, Dongwon
박동원
KIM, Youngkeun
김영근
KIM, Hyungmin
김형민
Title: METHOD FOR MANUFACTURING CARBON FIBER-REINFORCED COMPOSITE MATERIAL SPRING, AND CARBON FIBER-REINFORCED COMPOSITE MATERIAL SPRING MANUFACTURED THEREBY
Abstract:
A method for manufacturing a carbon fiber-reinforced composite material spring, according to the present invention, may comprise the steps of: forming a first carbon fiber layer by winding, around a mandrel, a carbon fiber prepreg that is gelled by impregnating a carbon fiber with a resin; forming a second carbon fiber layer by winding, on the first carbon fiber layer, a second carbon fiber prepreg of a knitted fabric shape that is gelled by impregnating a carbon fiber with a resin; forming a third carbon fiber layer by winding, on the second carbon fiber layer, a third carbon fiber prepreg of a knitted fabric shape that is gelled by impregnating a carbon fiber with a resin; obtaining a first spring material of a tubular shape by removing the mandrel when the first to third carbon fiber layers are partially cured; injecting the first spring material into a mold having a forming space of a helical shape; curing the first spring material into a third spring material of a helical shape by injecting high pressure air into a hollow of the first spring material inserted into the mold so that the first to third carbon fiber layers are expanded and integrated with each other; separating the cured third spring material of a helical shape from the mold; and producing a finished product of a carbon fiber-reinforced composite material spring by cutting the third spring material of a helical shape by a predetermined length.