US 12,463,508 B2
Plant and method for manufacturing ferromagnetic cores of electric machines
Marco Premoli, Cinisello Balsamo (IT); Plinio Mussi, Cinisello Balsamo (IT); and Lino Verdino, Cinisello Balsamo (IT)
Assigned to ERNESTO MALVESTITI S.P.A., Cinisello Balsamo (IT)
Appl. No. 18/246,336
Filed by ERNESTO MALVESTITI S.P.A., Cinisello Balsamo (IT)
PCT Filed Sep. 23, 2021, PCT No. PCT/IB2021/058674
§ 371(c)(1), (2) Date Mar. 23, 2023,
PCT Pub. No. WO2022/064408, PCT Pub. Date Mar. 31, 2022.
Claims priority of application No. 102020000022621 (IT), filed on Sep. 24, 2020.
Prior Publication US 2023/0396136 A1, Dec. 7, 2023
Int. Cl. H02K 15/02 (2025.01); B32B 7/14 (2006.01); B32B 15/04 (2006.01); B32B 37/12 (2006.01); B32B 38/00 (2006.01); B32B 38/04 (2006.01)
CPC H02K 15/02 (2013.01) [B32B 7/14 (2013.01); B32B 15/043 (2013.01); B32B 37/1292 (2013.01); B32B 38/0004 (2013.01); B32B 2038/042 (2013.01); B32B 38/145 (2013.01); B32B 2255/06 (2013.01)] 20 Claims
OG exemplary drawing
 
1. A plant for manufacturing ferromagnetic cores of electric machines, wherein each of said ferromagnetic cores comprises a plurality of laminations packed in a blanking/punching tool to which a continuous metal laminate of ferromagnetic material is fed,
the plant comprising:
at least one adhesive material applicator adapted to apply said adhesive material to a surface of said continuous metal laminate of ferromagnetic material before said continuous metal laminate is fed to said blanking/punching tool;
at least one activation unit in which an activator applies an activating compound to the opposite surface of said continuous metal laminate after said adhesive material applicator applies said adhesive material and before said continuous metal laminate is fed to said blanking/punching tool, said at least one activation unit disposed in a depressurized chamber; and
at least one controller adapted to control the application of said adhesive material and said activating compound into the adhesive material applicator and the activation unit,
wherein said at least one adhesive material applicator comprises a printer and at least one transfer device on which said printer deposits the said adhesive material according to one or more impressions of a shape corresponding to an outline of each of said laminations of said plurality of laminations, said adhesive material being then applied by said at least one transfer device to said surface of said continuous metal laminate according to the outline of each lamination, defined by said impressions.