JPS5732831A - Method for manufacturing bent pipe joint continuously formed relatively long straight pipe part in one body at both ends - Google Patents

Method for manufacturing bent pipe joint continuously formed relatively long straight pipe part in one body at both ends

Info

Publication number
JPS5732831A
JPS5732831A JP10792280A JP10792280A JPS5732831A JP S5732831 A JPS5732831 A JP S5732831A JP 10792280 A JP10792280 A JP 10792280A JP 10792280 A JP10792280 A JP 10792280A JP S5732831 A JPS5732831 A JP S5732831A
Authority
JP
Japan
Prior art keywords
pipe
bent pipe
forming
prescribed
straight pipe
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
JP10792280A
Other languages
Japanese (ja)
Other versions
JPS5841130B2 (en
Inventor
Yoshinori Ito
Yoshiro Kano
Yoshihide Atsukari
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.)
BENKAN PLANT KK
Original Assignee
BENKAN PLANT KK
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 BENKAN PLANT KK filed Critical BENKAN PLANT KK
Priority to JP55107922A priority Critical patent/JPS5841130B2/en
Publication of JPS5732831A publication Critical patent/JPS5732831A/en
Publication of JPS5841130B2 publication Critical patent/JPS5841130B2/en
Expired legal-status Critical Current

Links

Landscapes

  • Bending Of Plates, Rods, And Pipes (AREA)

Abstract

PURPOSE: To continuously form relatively long straight pipe parts in bent pipe joints, by forming bent pipes having an oval cross section of a prescribed circumferential length by forcedly passing crude pipes through an elephant trunk-shaped core grid and forming straight pipe parts of a prescribed length at both ends of the bent pipe with metallic molds.
CONSTITUTION: An elephant trunk-shaped grid core M2 having a pipe enlarging part M2l and a guiding part M2g is connected to a supporting rod Q. The guiding part M2g has a vertically elongated oval corss section E2 and a radius of curvature R2 at both front side and back side. When a crude pipe P is forcedly passed through the elephant trunk-shaped core grid M2 through the supporting rod Q, a bent pipe B2M which is an intermediate product whose longer axial diameter T2 faces toward the radius of curvature R2 of the bent pipe, is obtained. Then, this bent pipe B2M is pressed with forming metallic molds D21 and D22. In this way, the bent pipe B2M having an oval cross section is deformed into a circular cross section having a prescribed shape and a prescribed diameter by forming grooves E21 and E22 of forming metallic molds D21 and D22, respectiely, and, at the same time, straight pipe parts having prescribed lengths are formed by straight pipe forming grooves L21 and L22.
COPYRIGHT: (C)1982,JPO&Japio
JP55107922A 1980-08-06 1980-08-06 Method for manufacturing a curved pipe joint in which relatively long straight pipe parts are integrally and continuously formed at both ends Expired JPS5841130B2 (en)

Priority Applications (1)

Application Number Priority Date Filing Date Title
JP55107922A JPS5841130B2 (en) 1980-08-06 1980-08-06 Method for manufacturing a curved pipe joint in which relatively long straight pipe parts are integrally and continuously formed at both ends

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
JP55107922A JPS5841130B2 (en) 1980-08-06 1980-08-06 Method for manufacturing a curved pipe joint in which relatively long straight pipe parts are integrally and continuously formed at both ends

Publications (2)

Publication Number Publication Date
JPS5732831A true JPS5732831A (en) 1982-02-22
JPS5841130B2 JPS5841130B2 (en) 1983-09-09

Family

ID=14471443

Family Applications (1)

Application Number Title Priority Date Filing Date
JP55107922A Expired JPS5841130B2 (en) 1980-08-06 1980-08-06 Method for manufacturing a curved pipe joint in which relatively long straight pipe parts are integrally and continuously formed at both ends

Country Status (1)

Country Link
JP (1) JPS5841130B2 (en)

Cited By (5)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US5094096A (en) * 1989-06-14 1992-03-10 Chromcraft Furniture Corp. Method of bending
US8087277B2 (en) * 2005-10-28 2012-01-03 Toyota Jidosha Kabushiki Kaisha Method for correcting metal tube and corrective press die
CN107363138A (en) * 2017-08-17 2017-11-21 燕山大学 Elbow with straight section die forming method
CN108620465A (en) * 2018-04-27 2018-10-09 燕山大学 Processing mold, process equipment and the processing method of elbow with straight section
US11911819B2 (en) 2022-02-24 2024-02-27 Futaba Industrial Co., Ltd. Shaping method and shaping device for double pipe

Citations (2)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
JPS4996960A (en) * 1973-01-20 1974-09-13
JPS5410265A (en) * 1977-06-27 1979-01-25 Kawasaki Heavy Ind Ltd Sintered hard alloy bent pipe and its manufacture

Patent Citations (2)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
JPS4996960A (en) * 1973-01-20 1974-09-13
JPS5410265A (en) * 1977-06-27 1979-01-25 Kawasaki Heavy Ind Ltd Sintered hard alloy bent pipe and its manufacture

Cited By (5)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US5094096A (en) * 1989-06-14 1992-03-10 Chromcraft Furniture Corp. Method of bending
US8087277B2 (en) * 2005-10-28 2012-01-03 Toyota Jidosha Kabushiki Kaisha Method for correcting metal tube and corrective press die
CN107363138A (en) * 2017-08-17 2017-11-21 燕山大学 Elbow with straight section die forming method
CN108620465A (en) * 2018-04-27 2018-10-09 燕山大学 Processing mold, process equipment and the processing method of elbow with straight section
US11911819B2 (en) 2022-02-24 2024-02-27 Futaba Industrial Co., Ltd. Shaping method and shaping device for double pipe

Also Published As

Publication number Publication date
JPS5841130B2 (en) 1983-09-09

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