Title:
ASSIST GAS GENERATION DEVICE FOR LASER PROCESSING MACHINE
Document Type and Number:
WIPO Patent Application WO/2014/065256
Kind Code:
A1
Abstract:
Provided is an assist gas generation device for a laser processing machine, capable of dross free cutting using nitrogen-rich gas and of reducing costs. An assist gas supply unit (27) in the laser processing machine (10) comprises: an air compressor (25) that takes in air and compresses same to a prescribed pressure; an oxygen separation device (83) having an oxygen separation film (92) that separates oxygen gas from the air compressed by the air compressor (25) and generates nitrogen-rich gas; and a booster (24) that compresses the nitrogen-rich gas generated by the oxygen separation device (83). A throttle unit (84) is provided between the air compressor (25) and the oxygen separation device (83) or between the oxygen separation device (83) and the booster (24).
Inventors:
HAYASHI SEIICHI (JP)
MASAUJI KOJI (JP)
MASAUJI KOJI (JP)
Application Number:
PCT/JP2013/078527
Publication Date:
May 01, 2014
Filing Date:
October 22, 2013
Export Citation:
Assignee:
KOMATSU IND CORP (JP)
International Classes:
B01D53/22; B23K26/14
Foreign References:
| JPH11277287A | 1999-10-12 | |||
| JP2010126425A | 2010-06-10 | |||
| JP2006346737A | 2006-12-28 | |||
| JPH0726086U | 1995-05-16 | |||
| JPH0721274U | 1995-04-18 |
Attorney, Agent or Firm:
Fukami Patent Office, p. c. (JP)
Patent business corporation Fukami patent firm (JP)
Patent business corporation Fukami patent firm (JP)
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