Title:
内面螺旋溝付管の製造方法および内面螺旋溝付管の製造装置
Document Type and Number:
Japanese Patent JP6643112
Kind Code:
B2
Abstract:
PROBLEM TO BE SOLVED: To provide a method and a device for manufacturing a pipe with an internal spiral groove by which a large torsion angle is given to a pipe and bulk production of such a pipe is enabled.SOLUTION: According to a method for manufacturing a pipe with an internal spiral groove, after a pipe material is unwound from an unwinding bobbin and is so made as to pass a first draw die, a transportation direction thereof is reversed by a first revolution flyer thereby causing the pipe material to pass a second draw die and further pass a third draw die, and further, the transportation direction is reversed by a second revolution flyer thereby causing the pipe material to further pass a fourth draw die and winding the same on a winding bobbin. The pipe material is rotated in a reverse direction of a rotational direction of the first revolution flyer and is so made as to pass the draw dies respectively, whereby a diameter of the pipe material is reduced and a torsion is given to the pipe material.SELECTED DRAWING: Figure 1
Inventors:
Yusuke Nakaura
Hateruma Yuki
Hateruma Yuki
Application Number:
JP2016013795A
Publication Date:
February 12, 2020
Filing Date:
January 27, 2016
Export Citation:
Assignee:
Mitsubishi Aluminum Co., Ltd.
International Classes:
B21C1/22; B21C1/14; F28F1/40
Domestic Patent References:
| JP62240108A | ||||
| JP56151128A | ||||
| JP10166086A | ||||
| JP2014142175A |
Attorney, Agent or Firm:
Yasushi Matsunuma
Mitsuo Teramoto
Fumihiro Hosokawa
Kazunori Onami
Masatake Shiga
Mitsuo Teramoto
Fumihiro Hosokawa
Kazunori Onami
Masatake Shiga