Method of removing coating layer of coil wiring
US11387718B2 · kind B2 · utility
Assignees
Inventors
Key dates
| Filing date | Sep 24, 2019 |
| Grant date | Jul 12, 2022 |
| Priority date | — |
| Expiry date | Oct 28, 2040 |
Classification
- Technology area (CPC H)Electricity
- CPC primaryH05K1/118
- WIPO fieldMachine tools
- WIPO sectorMechanical engineering
Abstract
A method of removing an insulating coating layer of coil wiring includes: a fragmentation step in which a line-shaped region of the insulating coating layer, which separates a removal-planned portion and a remain-planned portion of the insulating coating layer, is removed; a laser irradiation step in which laser light which transmits through the insulating coating layer but which is absorbed by a coil wiring is irradiated from a side of an outer surface of the removal-planned portion toward a boundary of the coil wiring with the insulating coating layer, to carbonize a boundary portion between the insulating coating layer and the coil wiring of the removal-planned portion by generation of heat of the coil wiring; and a coating turn-over step in which air is blown onto the removal-planned portion to turn over and blow off the removal-planned portion.
Source: USPTO / EPO open patent data. Objective bibliographic and citation counts.