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1. (WO2018157841) ADDITIVE MANUFACTURING METHOD FOR INTERLAYER-STRENGTHENED CONTINUOUS FIBRE COMPOSITE MATERIAL

Pub. No.:    WO/2018/157841    International Application No.:    PCT/CN2018/077787
Publication Date: Sat Sep 08 01:59:59 CEST 2018 International Filing Date: Fri Mar 02 00:59:59 CET 2018
IPC: B29C 64/118
B29C 64/188
B29C 70/12
B29C 70/00
B33Y 10/00
Applicants: BEIJING NATIONAL INNOVATION INSTITUTE OF LIGHTWEIGHT LTD
北京机科国创轻量化科学研究院有限公司
Inventors: SHAN, Zhongde
单忠德
LIU, Feng
刘丰
WU, Xiaochuan
吴晓川
LI, Zhikun
李志坤
ZHANG, Qun
张群
Title: ADDITIVE MANUFACTURING METHOD FOR INTERLAYER-STRENGTHENED CONTINUOUS FIBRE COMPOSITE MATERIAL
Abstract:
Disclosed is an additive manufacturing method for an interlayer-strengthened continuous fibre composite material, belonging to the intersecting field of composite materials and additive manufacturing. The steps are: establishing a CAD model for a continuous fibre strengthened composite material product, acquiring ratio data, model profile data and scanning path data about continuous fibres and a substrate of the product, a thread guiding mechanism (1) pulling threads to a print head (2), controlling the print head (2) via CAD drive to perform continuous fibre composite material printing on a workbench (3), laying short fibres between layers through an interlayer auxiliary head (5), using a compaction mechanism (7) to perform compaction of print layers (4), realising additive manufacturing of a continuous fibre strengthened composite material product. The method improves the manufacturing efficiency of continuous fibre strengthened composite material and fibre/resin interface bonding strength, laying short fibres between print layers (4) realises layer-to-layer bonding performance of a composite material product, realising interlayer strengthening of an additive manufactured composite material, improving the material fibre volume fraction, thereby realising high performance, and highly efficient additive manufacturing of continuous fibre strengthened composite material.