US 12,237,732 B2
Device for positioning ends of at least first pair of legs of hairpin conductors
Massimo Ponzio, Siena (IT); and Rubino Corbinelli, Siena (IT)
Assigned to ATOP S.p.A., Barberino Tavarnelle (IT)
Appl. No. 17/298,910
Filed by ATOP S.p.A., Florence (IT)
PCT Filed Dec. 19, 2019, PCT No. PCT/EP2019/086294
§ 371(c)(1), (2) Date Jun. 1, 2021,
PCT Pub. No. WO2020/127724, PCT Pub. Date Jun. 25, 2020.
Claims priority of application No. 18215155 (EP), filed on Dec. 21, 2018.
Prior Publication US 2022/0069679 A1, Mar. 3, 2022
Int. Cl. H02K 15/00 (2006.01); B23K 31/02 (2006.01); B23K 37/04 (2006.01); H02K 15/04 (2006.01); H02K 15/0421 (2025.01); B23K 101/38 (2006.01)
CPC H02K 15/0081 (2013.01) [B23K 31/02 (2013.01); B23K 37/0435 (2013.01); H02K 15/0421 (2013.01); B23K 2101/38 (2018.08); H02K 15/04 (2013.01); Y10T 29/53143 (2015.01)] 19 Claims
OG exemplary drawing
 
1. A device for positioning ends of at least a first pair of legs of hairpin conductors extending from a stator core with respect to a welder tool, the device comprising:
a first clamping element having a first clamping surface; and
a second clamping element having a second clamping surface,
wherein:
said first clamping element and said second clamping element are independently moveable radially relative to each other along a radial direction, said first clamping surface and said second clamping surface are radially facing each other and generate a radial clamping force on the ends of the first pair of legs of hairpin conductors when moved radially relative to each other along the radial direction, and
the first clamping element and the second clamping element form a first receiving section between said first clamping surface and said second clamping surface, having a first radial width dimensioned to axially receive and clamp the first pair of legs of hairpin conductors during welding, and a second receiving section inside said first clamping element and said second clamping element, having a second radial width, dimensioned to receive at least a further pair of legs during welding of said first pair of legs, wherein at least a part of the second clamping element is arranged below the first clamping element with respect to an axis corresponding to an axis of the stator core.