PIPE BENDING DEVICE - SANOH IND CO LTD

Title:

PIPE BENDING DEVICE

Document Type and Number:

WIPO Patent Application WO/2011/142173

Kind Code:

A1

Abstract:

Disclosed is a pipe bending device which is compact and inexpensive. Hence, specifically disclosed is a pipe bending device in which a pipe is positioned to a bending roll in synchronization with the rotation of a rotational axis, and the pipe is moved and bent along the bending roll while pressing the pipe against the bending roll, wherein a linear slit is formed along the bus, an external cylindrical body made by forming a circumferential slit extending in the circumferential direction at the upper end of the linear slit is disposed in a machine casing, an internal cylindrical body in which a helical groove is formed is disposed so as to rotate in the external cylindrical body, the rotational axis is inserted into the internal cylindrical body so as to vertically move and rotate, a pin is projected onto the rotational axis, the pin is inserted into the helical groove of the internal cylindrical body and the linear slit of the external cylindrical body, the internal cylindrical body is connected to the output axis of a rotation actuator, and the rotational axis is raised and rotated at the uppermost position by the rotation actuator.

Inventors:

NAKAZATO KAZUHIKO (JP)
AMASAKI YOSHIAKI (JP)
NAGAOKA KAZUHIRO (JP)

Application Number:

PCT/JP2011/056145

Publication Date:

November 17, 2011

Filing Date:

March 09, 2011

Export Citation:

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Assignee:

SANOH IND CO LTD (JP)
NAKAZATO KAZUHIKO (JP)
AMASAKI YOSHIAKI (JP)
NAGAOKA KAZUHIRO (JP)

International Classes:

B21D7/025

Foreign References:

JPH07236921A	1995-09-12
JP2006170031A	2006-06-29
JPH02165819A	1990-06-26
JP2002316218A	2002-10-29
JP2003305518A	2003-10-28

Other References: