JPS54112771A - Pipe bender - Google Patents

Pipe bender

Info

Publication number
JPS54112771A
JPS54112771A JP1979978A JP1979978A JPS54112771A JP S54112771 A JPS54112771 A JP S54112771A JP 1979978 A JP1979978 A JP 1979978A JP 1979978 A JP1979978 A JP 1979978A JP S54112771 A JPS54112771 A JP S54112771A
Authority
JP
Japan
Prior art keywords
pipe
bender
benders
rolls
groove
Prior art date
Legal status (The legal status is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the status listed.)
Granted
Application number
JP1979978A
Other languages
Japanese (ja)
Other versions
JPS5759771B2 (en
Inventor
Fumio Ihara
Hiroya Murakami
Current Assignee (The listed assignees may be inaccurate. Google has not performed a legal analysis and makes no representation or warranty as to the accuracy of the list.)
Hitachi Ltd
Original Assignee
Hitachi Ltd
Priority date (The priority date is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the date listed.)
Filing date
Publication date
Application filed by Hitachi Ltd filed Critical Hitachi Ltd
Priority to JP1979978A priority Critical patent/JPS54112771A/en
Publication of JPS54112771A publication Critical patent/JPS54112771A/en
Publication of JPS5759771B2 publication Critical patent/JPS5759771B2/ja
Granted legal-status Critical Current

Links

Abstract

PURPOSE:To reduce the flattening at the bend portion of the pipe when the meandering pipe is formed, and also, to facilitate the removal of the product after the bending work is finished, by supplying the bender consisting of the top portion whose circumferential surface is provided with a shallow groove, and of the flat portion connected to this top portion and provided with width twice of the internal bending radius of the pipe. CONSTITUTION:A shallow groove 7 with depth (c) is formed in the circumferential surface of the top porton 5 of the bender 1 taking the internal bending radius of the pipe 3 as (r). Besides, both side planes of the flat portion 6 are made parallel and flat, and their width is taken as 2r; hereupon, the bottom of the groove 7 is smoothly connected to the flat portion 6. Next, the pipe benders, consisting of this bender 1 and two rolls 2, are successively reversely located on a straight line; the pipe 3 is set between the benders 1, 1'... and rolls 2, 2'..., and a pipe 3 meandering at 180 deg. as illustrated on the picture is formed. Next, rolls 2, 2'... are moved backward, and the benders 1, 1'... are moved backward as far as the pipe 3 slips out of the groove 7; hereby, the product 3 can be easily removed in the direction perpendicular to the paper plane.
JP1979978A 1978-02-24 1978-02-24 Pipe bender Granted JPS54112771A (en)

Priority Applications (1)

Application Number Priority Date Filing Date Title
JP1979978A JPS54112771A (en) 1978-02-24 1978-02-24 Pipe bender

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
JP1979978A JPS54112771A (en) 1978-02-24 1978-02-24 Pipe bender

Publications (2)

Publication Number Publication Date
JPS54112771A true JPS54112771A (en) 1979-09-03
JPS5759771B2 JPS5759771B2 (en) 1982-12-16

Family

ID=12009386

Family Applications (1)

Application Number Title Priority Date Filing Date
JP1979978A Granted JPS54112771A (en) 1978-02-24 1978-02-24 Pipe bender

Country Status (1)

Country Link
JP (1) JPS54112771A (en)

Cited By (3)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
KR100813292B1 (en) * 2006-06-14 2008-03-13 주식회사 애강 Frame for forming pipe and forming method using the same
JP2015085375A (en) * 2013-11-01 2015-05-07 株式会社クネット・インターナショナル Wavy handrail formation device
JP2019126830A (en) * 2018-01-26 2019-08-01 株式会社ノーリツ Metal round pipe, heat exchanger comprising the same, pipe bender and method for bending metal round pipe

Cited By (5)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
KR100813292B1 (en) * 2006-06-14 2008-03-13 주식회사 애강 Frame for forming pipe and forming method using the same
JP2015085375A (en) * 2013-11-01 2015-05-07 株式会社クネット・インターナショナル Wavy handrail formation device
JP2019126830A (en) * 2018-01-26 2019-08-01 株式会社ノーリツ Metal round pipe, heat exchanger comprising the same, pipe bender and method for bending metal round pipe
WO2019146569A1 (en) * 2018-01-26 2019-08-01 株式会社ノーリツ Round metal pipe, heat exchanger provided with same, pipe bender, and method for bend-processing round metal pipe
CN111629844A (en) * 2018-01-26 2020-09-04 株式会社能率 Metal round tube, heat exchanger provided with same, pipe bender, and method for bending metal round tube

Also Published As

Publication number Publication date
JPS5759771B2 (en) 1982-12-16

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