IP Library Granted Patent US 12,374,969
Granted Patent B2
US 12,374,969 · App. 17/408,645 · Granted Jul 29, 2025

Method for producing lamination stacks and facility for performing the method

Inventor: Björn Böker (Esslingen, DE)
Assignee: Feintool International Holding AG
H02K15/02F16B11/006Y10T29/49009Y10T29/49055Y10T29/49078Y10T29/53143Y10T29/5317
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Quick Facts
Patent No.
US 12,374,969
App. No.
17/408,645
Granted
Jul 29, 2025
Kind
B2
Abstract

In a method for producing stacks of laminations, in which at least one adhesive is applied onto annular laminations with at least one application head and laminations are stacked into a stack of laminations, the lamination is rotated about its axis in the application area of the application head and/or the application head is moved about the axis of the lamination in order to apply the adhesive onto the lamination. A system for carrying out the method features at least one punching tool, with which laminations are punched out of a sheet metal material, wherein at least one station for cleaning and/or for activating and/or for applying an adhesive onto the laminations is arranged downstream of the punching tool.

Claims (20)

1. A system for carrying out a method for producing stacks of laminations, in which at least one adhesive is applied onto annular laminations with at least one application device and laminations are stacked into a stack of laminations, the method comprising: rotating each of the laminations ( 5 , 6 ) about its axis ( 17 ) in an application area of the application device and/or moving the application device about the axis ( 17 ) of the lamination ( 5 , 6 ) in order to apply the adhesive; wherein the system comprises:

at least one punching tool configured to punch the laminations out of a sheet metal material;

a station ( 4 a , 8 , 9 ) comprising the application device comprising at least one application nozzle ( 16 ) configured to apply the at least one adhesive onto the laminations ( 5 , 6 ), wherein the application device further comprises at least one cleaning nozzle ( 14 ) arranged upstream of the at least one application nozzle ( 16 ) and configured to clean the laminations ( 5 , 6 );

wherein the station is arranged downstream of the punching tool ( 4 ).

2. The system according to claim 1 , further comprising a rotary unit ( 33 , 36 ) configured to rotate the laminations ( 5 , 6 ) by one 360° rotation about the axis ( 17 ) of the laminations ( 5 , 6 ) while applying the at least one adhesive onto the laminations ( 5 , 6 ).

3. The system according to claim 1 , further comprising a rotary unit configured to rotate the application device, wherein the application device has a rotational axis coinciding with the axis ( 17 ) of the laminations ( 5 , 6 ) and wherein the application device comprises a first end disposed at the rotational axis and a second end radially displaced away from the rotational axis, wherein the second end of the application device is configured to rotate by one 360° rotation about the rotational axis while applying the at least one adhesive onto the laminations ( 5 , 6 ).

4. A system for carrying out a method for producing stacks of laminations, in which at least one adhesive is applied onto annular laminations with at least one application device and laminations are stacked into a stack of laminations, the method comprising: rotating each of the laminations ( 5 , 6 ) about its axis ( 17 ) in an application area of the application device and/or moving the application device about the axis ( 17 ) of the lamination ( 5 , 6 ) in order to apply the adhesive; wherein the system comprises:

at least one punching tool configured to punch the laminations out of a sheet metal material;

a station ( 4 a , 8 , 9 ) comprising at least one activation nozzle ( 15 ) configured to activate and clean a surface of the laminations ( 5 , 6 );

the station ( 4 a , 8 , 9 ) further comprising the application device configured to apply the at least one adhesive onto the laminations ( 5 , 6 ) downstream of the at least one activation nozzle ( 15 );

wherein the station ( 4 a , 8 , 9 ) is arranged downstream of the punching tool ( 4 ).

5. The system according to claim 4 , further comprising a rotary unit ( 33 , 36 ) configured to rotate the laminations ( 5 , 6 ) by one 360° rotation about the axis ( 17 ) of the laminations ( 5 , 6 ) while applying the at least one adhesive onto the laminations ( 5 , 6 ).

6. The system according to claim 4 , further comprising a rotary unit configured to rotate the application device, wherein the application device has a rotational axis coinciding with the axis ( 17 ) of the laminations ( 5 , 6 ) and wherein the application device is configured to rotate by one 360° rotation about the rotational axis while applying the at least one adhesive onto the laminations ( 5 , 6 ).

7. The system according to claim 4 , wherein the application device comprises at least one application nozzle ( 16 ) configured to apply the at least one adhesive onto the laminations ( 5 , 6 ), wherein the application device further comprises the at least one activation nozzle ( 15 ) configured to activate and clean the surface of the laminations ( 5 , 6 ).

8. A system for carrying out a method for producing stacks of laminations, in which at least one adhesive is applied onto annular laminations with at least one application device and laminations are stacked into a stack of laminations, the method comprising: rotating each of the laminations ( 5 , 6 ) about its axis ( 17 ) in an application area of the application device and/or moving the application device about the axis ( 17 ) of the lamination ( 5 , 6 ) in order to apply the adhesive; wherein the system comprises:

at least one punching tool configured to punch the laminations out of a sheet metal material;

a station ( 4 a , 8 , 9 ) comprising the application device comprising at least one application nozzle ( 16 ) configured to apply the at least one adhesive onto the laminations ( 5 , 6 ), wherein the application device further comprises at least one cleaning nozzle ( 14 ) configured to clean the laminations ( 5 , 6 ) and at least one activation nozzle ( 15 ) configured to activate and clean a surface of the laminations ( 5 , 6 ), wherein the at least one application nozzle ( 16 ) is arranged downstream of the at least one activation nozzle ( 15 );

wherein the station ( 4 a , 8 , 9 ) is arranged downstream of the punching tool ( 4 ).

9. The system according to claim 8 , further comprising a rotary unit ( 33 , 36 ) configured to rotate the laminations ( 5 , 6 ) by one 360° rotation about the axis ( 17 ) of the laminations ( 5 , 6 ) while applying the at least one adhesive onto the laminations ( 5 , 6 ).

10. The system according to claim 8 , further comprising a rotary unit configured to rotate the application device, wherein the application device has a rotational axis coinciding with the axis ( 17 ) of the laminations ( 5 , 6 ) and wherein the application device is configured to rotate by one 360° rotation about the rotational axis while applying the at least one adhesive onto the laminations ( 5 , 6 ).

Assignments (3)
ASSIGNMENT OF ASSIGNOR'S INTEREST Recorded Mar 1, 2024
From: FEINTOOL SYSTEM PARTS SACHSENHEIM GMBH
To: FEINTOOL INTERNATIONAL HOLDING AG
Reel/Frame 066615/0698 →
CHANGE OF NAME Recorded Dec 3, 2023
From: KIENLE + SPIESS GMBH
To: FEINTOOL SYSTEM PARTS SACHSENHEIM GMBH
Reel/Frame 065747/0591 →
ASSIGNMENT OF ASSIGNOR'S INTEREST Recorded Aug 23, 2021
From: BÖKER, BJÖRN
To: KIENLE + SPIESS GMBH
Reel/Frame 057253/0124 →
Priority Claims (1)
DE 10 2014 017 149.3 · Nov 17, 2014 · national
Continuity (3)
Division 16258602 · Jan 27, 2019
Division 14941866 · Nov 16, 2015
Related Publication 20210391775A1 · Dec 16, 2021
References Cited (17)
US 5743965A · Nishimura · 1998 [cited by examiner]
US 20030104097A1 · Matsumoto · 2003 [cited by examiner]
US 20060066168A1 · Shoykhet · 2006 [cited by examiner]
US 20070209175A1 · Blocher et al. · 2007 [cited by applicant]
US 20080311298A1 · Kappler · 2008 [cited by applicant]
US 20090136660A1 · Brune et al. · 2009 [cited by applicant]
US 20100200410A1 · Schneider et al. · 2010 [cited by applicant]
US 20130076193A1 · Kim · 2013 [cited by examiner]
US 20130120485A1 · Kodama et al. · 2013 [cited by applicant]
US 20150097463A1 · Blocher et al. · 2015 [cited by applicant]
US 20150314563A1 · Fluch · 2015 [cited by examiner]
CN 101495242 · 2009 [cited by applicant]
CN 101730761 · 2010 [cited by applicant]
DE 19923206 · 2000 [cited by applicant]
DE 102011010825 · 2012 [cited by applicant]
JP 2005269732A · 2005 [cited by examiner]
Translation of JP 2005-269736 provided by Search Fit (Year: 2005). [cited by examiner]