US 11,718,048 B2
Method for providing wheels for motor vehicles, and associated wheels
Andrea Bedeschi, Faenza (IT); Tobias Furst, Karlsruhe (DE); and Philipp Rosenberg, Karlsruhe (DE)
Assigned to BUCCI COMPOSITES S.P.A., Faenza (IT)
Appl. No. 16/489,954
Filed by RI-BA COMPOSITES S.R.L., Faenza (IT)
PCT Filed Mar. 7, 2017, PCT No. PCT/IT2017/000046
§ 371(c)(1), (2) Date Aug. 29, 2019,
PCT Pub. No. WO2018/163220, PCT Pub. Date Sep. 13, 2018.
Prior Publication US 2020/0070440 A1, Mar. 5, 2020
Int. Cl. B29C 70/48 (2006.01); B29C 70/30 (2006.01); B60B 3/10 (2006.01); B60B 5/02 (2006.01); B29K 101/10 (2006.01); B29K 307/04 (2006.01); B29L 31/32 (2006.01)
CPC B29C 70/48 (2013.01) [B29C 70/304 (2021.05); B60B 3/10 (2013.01); B60B 5/02 (2013.01); B29K 2101/10 (2013.01); B29K 2307/04 (2013.01); B29L 2031/32 (2013.01); B60B 2310/204 (2013.01); B60B 2360/3416 (2013.01); B60B 2900/111 (2013.01); B60B 2900/112 (2013.01); B60B 2900/113 (2013.01); B60B 2900/311 (2013.01)] 6 Claims
OG exemplary drawing
 
1. A method for providing motor vehicle wheels made of composite material based on carbon fiber, the method including the following steps:
dividing, during design, each wheel into a plurality of portions having small dimensions,
providing, with a raw material constituted mainly by carbon fibers with a predefined orientation, at least one first portion with terminal edges configured to mate with corresponding edges of at least one respective second portion that has a contour that is conjugate and complementary with respect to the contour of the edges of the at least one respective first portion,
mating said portions and arranging said portions subsequently within a respective mold whose shape and dimensions are conjugate with respect to those of the wheel to be manufactured, wherein the contiguous edges of said portions are mutually imbricated such that the distinct portions are arranged to overlap in sequence wherein at least three contiguous distinct portions are arranged such that one of the distinct portions is interposed between the other adjacent distinct portions,
bringing the mold and contents of the mold to a predefined temperature,
injecting a resin in liquid state into the mold, said resin being injected at high pressure and high temperature for diffusing in all the portions and through all the interface surfaces between the portions, forming the matrix of the composite that constitutes the wheel,
maintaining the pressure and temperature of the mold within predefined ranges for a time interval required for the at least partial cross-linking of the resin, and
extracting the wheel from the mold.