Title:
LAMINATED IRON CORE MANUFACTURING METHOD, MANUFACTURING DEVICE, LAMINATED IRON CORE, AND ROATING ELECTRIC MACHINE
Document Type and Number:
WIPO Patent Application WO/2024/053364
Kind Code:
A1
Abstract:
This laminated iron core manufacturing method comprises: a step for pressing electromagnetic steel sheets each having a coating containing an adhesive agent which exhibits adhesiveness via heating provided to a sheet surface thereof with a mold (2) and converting the same into unit iron cores (1); and a step for layering the unit iron cores (1) pressed with the mold (2), heating a plurality of partial regions of the sheet surface of the unit iron core (1) of the uppermost layer, and partially bonding the same to the unit iron core (1) of a lower layer thereto in the plurality of regions. Thereby, pressing machining and laminating are performed substantially simultaneously as a series of operations, and it is possible to increase the efficiency of laminated iron core manufacturing without increasing person-hours.
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Inventors:
MURAKAWA TESSHU (JP)
Application Number:
PCT/JP2023/029881
Publication Date:
March 14, 2024
Filing Date:
August 18, 2023
Export Citation:
Assignee:
NIPPON STEEL CORP (JP)
International Classes:
H02K15/02; H01F41/02
Domestic Patent References:
| WO2021256537A1 | 2021-12-23 |
Foreign References:
| JP3745490B2 | 2006-02-15 | |||
| JP2022000888A | 2022-01-04 | |||
| JP2022001014A | 2022-01-04 | |||
| JP2005210817A | 2005-08-04 |
Attorney, Agent or Firm:
KOKUBUN, Takayoshi (JP)
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