US 12,168,331 B2
Method for manufacturing a wind turbine blade and mandrel tool
Allan Biegel, Saeby (DK); Gabriele Chiesura, Aalborg (DK); Allan Hurup, Nibe (DK); Karsten Krarup, Randers SV (DK); Simon Vestphael Russek, Klarup (DK); and Steffen Steffensen, Aalborg (DK)
Appl. No. 18/008,990
Filed by Siemens Gamesa Renewable Energy A/S, Brande (DK)
PCT Filed Jun. 8, 2021, PCT No. PCT/EP2021/065232
§ 371(c)(1), (2) Date Dec. 8, 2022,
PCT Pub. No. WO2021/254817, PCT Pub. Date Dec. 23, 2021.
Claims priority of application No. 20180028 (EP), filed on Jun. 15, 2020.
Prior Publication US 2023/0219316 A1, Jul. 13, 2023
Int. Cl. B29D 99/00 (2010.01); B29C 33/48 (2006.01); B29C 70/06 (2006.01); B29C 70/32 (2006.01); F03D 1/06 (2006.01); B29L 31/08 (2006.01)
CPC B29D 99/0028 (2013.01) [B29C 33/485 (2013.01); B29C 70/06 (2013.01); B29C 70/32 (2013.01); F03D 1/0675 (2013.01); B29L 2031/085 (2013.01); F05B 2240/302 (2013.01)] 10 Claims
OG exemplary drawing
 
1. A method for manufacturing a wind turbine blade, comprising:
a) arranging a fiber lay-up on a mandrel tool, the mandrel tool comprising a frame and, as seen in cross-section, at least two mandrel portions connected to the frame, and wherein at least a portion of the fiber lay-up is supported by an outer surface of the at least two mandrel portions,
b) reducing a cross-section size of the mandrel tool by retracting at least one of the at least two mandrel portions towards the frame,
c) arranging the mandrel tool inside adjacent blade sections,
d) increasing the cross-section size of the mandrel tool by extending at least one of the at least two mandrel portions away from the frame, and
e) infusing at least a portion of the fiber lay-up with a resin and curing the resin to obtain a cured joining portion joining the blade sections inside.