US 12,323,015 B2
Apparatus for the assembly of lamellar packs for electrical use
Alberto Curatoli, Rho (IT); Davide Verri, Inveruno (IT); and Gianluca Bertocchi, Rho (IT)
Assigned to Corrado S.P.A., Lainate (IT)
Appl. No. 17/774,218
Filed by CORRADA S.P.A., Lainate (IT)
PCT Filed Oct. 30, 2020, PCT No. PCT/IB2020/060225
§ 371(c)(1), (2) Date May 4, 2022,
PCT Pub. No. WO2021/090134, PCT Pub. Date May 14, 2021.
Claims priority of application No. 102019000020286 (IT), filed on Nov. 4, 2019.
Prior Publication US 2022/0407400 A1, Dec. 22, 2022
Int. Cl. H02K 15/02 (2025.01); B05C 1/02 (2006.01); B05C 11/10 (2006.01); B21D 28/02 (2006.01); H01F 41/02 (2006.01)
CPC H02K 15/02 (2013.01) [B05C 1/025 (2013.01); B05C 11/1034 (2013.01); B21D 28/02 (2013.01); H01F 41/0206 (2013.01)] 10 Claims
OG exemplary drawing
 
1. An apparatus (10) for assembly of lamellar packs for electrical use in electric motor machines, generators, transformers, counters, ignition coils and electrical equipment with gluing means, comprising:
a die-cutting station (12) for die-cutting a sheet (15) to define strips (15′) to be superimposed one on an other for forming a lamellar pack; and
a gluing station (14) for gluing by means of glue said strips (15′) cut from said sheet (15) and wherein the gluing station comprises means for discretely applying an amount of glue on an upper surface of the sheet (15) comprising a movable element (16) translating according to a lowering/lifting vertical direction with respect to the sheet (15) for a displacement of at least one gluing unit (18, 19) stabilised on said movable element (16) and provided with gluing means comprising a plurality of pins (20) suitable to pick up the amount of glue in the form of drops (25) from at least one gluing reservoir (22, 24) of the gluing station (14) containing the amount of glue (23), with said at least one gluing unit (18, 19) being translatable forward/backward according to a horizontal plane in a direction perpendicular to an advancement direction of the sheet (15) in the die-cutting station (12), a displacement of the movable element (16) and the displacement of the at least one gluing unit being synchronous with an advancement movement of the sheet (15) in the die-cutting station (12), operations of picking up the glue and depositing the glue on the strips occurring without interruptions in a working cycle with the lowering/lifting translation movement of the at least one gluing unit (18, 19) toward the at least one gluing reservoir (22, 24) corresponding to a simultaneous and synchronous lowering/lifting translation movement of another gluing unit displaced toward the sheet (15) for depositing the drops (25) thereon.