US 11,724,437 B2
Bending method for bending a composite bar
Thomas Bischoff, Bisingen (DE)
Assigned to SOLIDIAN GMBH, Albstadt (DE)
Appl. No. 16/643,416
Filed by Solidian GmbH, Albstadt (DE)
PCT Filed Aug. 24, 2018, PCT No. PCT/EP2018/072907
§ 371(c)(1), (2) Date Feb. 28, 2020,
PCT Pub. No. WO2019/042895, PCT Pub. Date Mar. 7, 2019.
Claims priority of application No. 10 2017 120 143.2 (DE), filed on Sep. 1, 2017.
Prior Publication US 2020/0189174 A1, Jun. 18, 2020
Int. Cl. B29C 53/84 (2006.01); B29C 53/08 (2006.01); B29C 70/52 (2006.01); B29K 105/10 (2006.01); B29L 31/00 (2006.01); B29L 31/10 (2006.01)
CPC B29C 53/84 (2013.01) [B29C 53/083 (2013.01); B29C 53/086 (2013.01); B29C 70/52 (2013.01); B29K 2105/106 (2013.01); B29L 2031/001 (2013.01); B29L 2031/10 (2013.01)] 18 Claims
OG exemplary drawing
 
1. A bending method for bending at least one composite bar (11) at a bending location (21) that comprises a reinforcement fiber bundle (15) with multiple reinforcement fibers (14) embedded in a cured plastic matrix, the method comprising the following steps:
arranging a sonotrode (24) of an ultrasonic device (22) at the bending location (21), wherein two bar sections (11a) of the at least one composite bar (11) that adjoin the bending location (21) extend in a first spatial direction (x),
heating a plastic matrix (M) of the at least one composite bar (11) at the bending location (21) by coupling ultrasonic waves in the at least one composite bar (11) at the bending location (21),
prior to bending the at least one composite bar (11), deforming the at least one composite bar (11) for formation of a deformed section (37) at the bending location (21) by an infeed movement between the sonotrode (24) and the at least one composite bar (11) in a second spatial direction (y) that is orientated radial to a bend that is to be created at the bending location (21),
bending the at least one composite bar (11) at the bending location (21),
curing the plastic matrix (M) at the bending location (21).