Title:
PIPE BENDING METHOD AND BENDING DEVICE
Document Type and Number:
WIPO Patent Application WO/2016/199511
Kind Code:
A1
Abstract:
[Problem] The objective of the present invention is to propose a method with which it is possible to bend a pipe successively in left and right directions using the motive force of a single drive motor, and in a relatively simple manner.
[Solution] In this pipe bending method, part of a pipe is pinched using a gripping device, and in this state another part of the pipe is pinched between a pair of bending rollers and a second bending roller of the pair of bending rollers is caused to revolve in a relative manner about a first bending roller, thereby bending the pipe, characterized in that: both bending rollers are held on a common movable frame; the relative revolving is effected by means of a synchronized motion in which a rotating motion causing the frame to rotate, and a lateral motion causing the frame to move in a perpendicular direction (Y-axis direction) relative to the longitudinal direction (X-axis direction) of the pipe, are caused to occur synchronously; and at this time the movement in the Y-axis direction is movement of the frame in the Y-axis direction in such a way that the position of the central axis of said first bending roller in the Y-axis direction is maintained, and the position, in the X-axis direction, of the center of rotation of the rotating motion does not change.
Inventors:
LAN GUANG PING (JP)
Application Number:
PCT/JP2016/062943
Publication Date:
December 15, 2016
Filing Date:
April 25, 2016
Export Citation:
Assignee:
SANOH IND CO LTD (JP)
International Classes:
B21D7/024; B21D7/025
Foreign References:
| JPS55126322A | 1980-09-30 | |||
| JPH07314049A | 1995-12-05 | |||
| JP2011251331A | 2011-12-15 |
Attorney, Agent or Firm:
IWANE Masatoshi (JP)
Masatoshi Iwane (JP)
Masatoshi Iwane (JP)
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