Title:
COILING MACHINE AND PRODUCTION METHOD FOR COIL SPRINGS
Document Type and Number:
WIPO Patent Application WO/2024/038669
Kind Code:
A1
Abstract:
This coiling machine comprises: a laser heater for heating a portion of a wire, which is to be formed into a spiral shape, by irradiating the same with a laser beam; and a cutting unit for cutting the portion of the wire heated by irradiation with the laser beam. The power density of the laser beam is 10-100 W/mm2.
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Inventors:
IWATA HISASHI (JP)
ICHIKAWA SHOGO (JP)
YAMAUCHI YUICHIRO (JP)
TANAKA RYO (JP)
ICHIKAWA SHOGO (JP)
YAMAUCHI YUICHIRO (JP)
TANAKA RYO (JP)
Application Number:
PCT/JP2023/022577
Publication Date:
February 22, 2024
Filing Date:
June 19, 2023
Export Citation:
Assignee:
NHK SPRING CO LTD (JP)
International Classes:
B21F35/00; B21F11/00
Foreign References:
| JP2022109282A | 2022-07-27 | |||
| JPS59187414A | 1984-10-24 | |||
| JPS63260716A | 1988-10-27 | |||
| JPS6250028A | 1987-03-04 | |||
| JPH06218476A | 1994-08-09 |
Attorney, Agent or Firm:
S & S INTERNATIONAL PPC (JP)
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