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Title:
REINFORCEMENT FOR PERIPHERY OF CONNECTING HOLE OF FIBER COMPOSITE MATERIAL AND PREPARATION SOLUTION THEREFOR
Document Type and Number:
WIPO Patent Application WO/2021/138751
Kind Code:
A1
Abstract:
Reinforcement for the periphery of a connecting hole (1) of a fiber composite material and a preparation solution therefor, comprising: performing perforation using a cone shaft (12) to form a connecting hole (1) in superimposed layers, cutting the portions of filaments (2) extending along the edges of a composite material board to reinforce the periphery of the connecting hole (1), vibrating a pressure plate (13) while rotating the cone shaft (12) clockwise and counter-clockwise during perforation, providing a bushing (6) in the hole after the perforation with the cone shaft (12) is completed, and then performing heating and solidification. When perforating, the cone shaft (12) separates the fiber filaments (2) to the two sides of the periphery of the connecting hole (1) to achieve reinforcement on the two sides. The filaments (2) on the periphery of the connecting hole (1) extend to openings to disperse the force, and the openings of the filaments (2) are fixed by upper and lower fiber layers in different directions and a substrate, such that the possibility of fatigue and cracking is lowered, and the number of connecting holes (1) can also be reduced, thus saving consumables, prolonging the service life of components, saving the time and costs for repairing and replacing components, and guaranteeing safety.

Inventors:
LUO ENHAO (CN)
LUO DAKAI (CN)
Application Number:
PCT/CN2020/000302
Publication Date:
July 15, 2021
Filing Date:
December 15, 2020
Export Citation:
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Assignee:
HANGZHOU YOUKAI BOAT CO LTD (CN)
International Classes:
B32B1/00; B29C70/34; B29C70/54; B32B3/24; B32B5/02; B32B5/26; B32B7/08
Foreign References:
CN111016301A2020-04-17
CN103925267A2014-07-16
CN110481061A2019-11-22
CN102922834A2013-02-13
CN102935721A2013-02-20
CN103042698A2013-04-17
FR2763881A11998-12-04
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