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 endsInfo
- 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
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
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)
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 |
JP2023123187A (en) * | 2022-02-24 | 2023-09-05 | フタバ産業株式会社 | Method and apparatus for molding double pipe |
Citations (2)
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 |
-
1980
- 1980-08-06 JP JP55107922A patent/JPS5841130B2/en not_active Expired
Patent Citations (2)
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 (6)
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 |
JP2023123187A (en) * | 2022-02-24 | 2023-09-05 | フタバ産業株式会社 | Method and apparatus for molding double pipe |
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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