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 (JP)
JOU HIDEKI (JP)
NAKAO NORIAKI (JP)
JOU HIDEKI (JP)
NAKAO NORIAKI (JP)
Application Number:
PCT/JP2001/004828
Publication Date:
December 13, 2001
Filing Date:
June 07, 2001
Export Citation:
Assignee:
DAIKIN IND LTD (JP)
OKAMOTO NORIAKI (JP)
JOU HIDEKI (JP)
NAKAO NORIAKI (JP)
OKAMOTO NORIAKI (JP)
JOU HIDEKI (JP)
NAKAO NORIAKI (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:
| JPH1054686A | 1998-02-24 | |||
| JPS62188727A | 1987-08-18 | |||
| JPS62151009U | 1987-09-25 | |||
| JPH0929333A | 1997-02-04 |
Other References:
See also references of EP 1293269A4
Attorney, Agent or Firm:
Maeda, Hiroshi (4-8 Utsubohonmachi 1-chom, Nishi-ku Osaka-shi Osaka, JP)
Download PDF:
Previous Patent: SYSTEM FOR CLEANING THE INTERIOR OF PIPES
Next Patent: TOOL-HOLDER FOR MOUNTING A TOOL ON A PRESS BRAKE
Next Patent: TOOL-HOLDER FOR MOUNTING A TOOL ON A PRESS BRAKE