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Title:
DEVICE AND METHOD FOR MANUFACTURING SOFT METAL TUBE
Document Type and Number:
WIPO Patent Application WO/2001/094044
Kind Code:
A1
Abstract:
A method of manufacturing a heating tube having internal grooves formed in a grooving process (1) and formed in a forming process (2), comprising the steps of softening the tube in an annealing process (3), and orderly winding in an orderly winding process (4), wherein, in the annealing process (3), the heating tube is heated and gradually cooled while being fed in longitudinal direction and, in the orderly winding process (4), the labor for the operation to install the heating tube on a bobbin is reduced by orderly taking in the heating tube on the drum part of the bobbin.

Inventors:
Okamoto, Noriaki c/o Kanaoka, Factory (Sakai Plant DAIKIN INDUSTRIES, LTD. 130, Kanaoka-cho Sakai-shi Osaka, 591-8511, JP)
Jou, Hideki c/o Kanaoka, Factory (Sakai Plant DAIKIN INDUSTRIES, LTD. 130, Kanaoka-cho Sakai-shi Osaka, 591-8511, JP)
Nakao, Noriaki c/o Kanaoka, Factory (Sakai Plant DAIKIN INDUSTRIES, LTD. 130, Kanaoka-cho Sakai-shi Osaka, 591-8511, JP)
Application Number:
PCT/JP2001/004828
Publication Date:
December 13, 2001
Filing Date:
June 07, 2001
Export Citation:
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Assignee:
DAIKIN INDUSTRIES, LTD. (Umeda Center Bldg, 4-12 Nakazaki-nishi 2-chom, Kita-ku Osaka-shi Osaka, 530-8323, JP)
Okamoto, Noriaki c/o Kanaoka, Factory (Sakai Plant DAIKIN INDUSTRIES, LTD. 130, Kanaoka-cho Sakai-shi Osaka, 591-8511, JP)
Jou, Hideki c/o Kanaoka, Factory (Sakai Plant DAIKIN INDUSTRIES, LTD. 130, Kanaoka-cho Sakai-shi Osaka, 591-8511, JP)
Nakao, Noriaki c/o Kanaoka, Factory (Sakai Plant DAIKIN INDUSTRIES, LTD. 130, Kanaoka-cho Sakai-shi Osaka, 591-8511, JP)
International Classes:
F16L9/02; B21C37/06; B21C37/08; B21C37/083; B21C37/20; B21C47/00; B21C47/26; B21C47/28; C21D9/08; C22F1/00; C22F1/08; F28F1/40; F28F21/08; C21D9/60; (IPC1-7): B21C37/15; B21C47/26
Foreign References:
JPH1054686A1998-02-24
JPS62188727A1987-08-18
JPS62151009U1987-09-25
JPH0929333A1997-02-04
Other References:
See also references of EP 1293269A1
Attorney, Agent or Firm:
Maeda, Hiroshi (Taihei Bldg, 4-8 Utsubohonmachi 1-chom, Nishi-ku Osaka-shi Osaka, 550-0004, JP)
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