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JPS55122632A - Double pipe producing apparatus - Google Patents

Double pipe producing apparatus

Info

Publication number
JPS55122632A
JPS55122632A JP2937579A JP2937579A JPS55122632A JP S55122632 A JPS55122632 A JP S55122632A JP 2937579 A JP2937579 A JP 2937579A JP 2937579 A JP2937579 A JP 2937579A JP S55122632 A JPS55122632 A JP S55122632A
Authority
JP
Japan
Prior art keywords
press
pipe
fit plugs
communicated
diameter
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
JP2937579A
Other languages
Japanese (ja)
Other versions
JPS5837050B2 (en
Inventor
Takeo Yasuda
Toshinori Iwase
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.)
Kawasaki Heavy Industries Ltd
Original Assignee
Kawasaki Heavy Industries 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 Kawasaki Heavy Industries Ltd filed Critical Kawasaki Heavy Industries Ltd
Priority to JP54029375A priority Critical patent/JPS5837050B2/en
Publication of JPS55122632A publication Critical patent/JPS55122632A/en
Publication of JPS5837050B2 publication Critical patent/JPS5837050B2/en
Expired legal-status Critical Current

Links

Landscapes

  • Press Drives And Press Lines (AREA)
  • Shaping Metal By Deep-Drawing, Or The Like (AREA)

Abstract

PURPOSE: To enable the expansion of the inside pipe to be accomplished while making sealing sure by making equal the inside diameter of the cylinder chamber communicated with the rear parts of the pipe expanding liquid feed holes pierced in the press-fit plugs and the inside diameter of the inside pipe.
CONSTITUTION: Press-fit plugs 9, 9' have tapered parts 10, 10' on the outer side of their inside ends and are formed with cylinder chambers 11, 11' of the same diameter as the inside diameter R of an inside pipe 4 in the inside rear part, these cylinder chambers 11, 11' being communicated with the pipe expanding liquid feed hole 12 and discharge hole 12' communicated with the inside pipe 4. With this constituition, the cylinders 11, 11' of the press-fit plugs 9, 9' are communicated by way of the feed hole 12 and discharge hole 12' in the pipe expanding process. Since the inside diameters thereof are the same as the inside diameter of the press-fit plugs 9, 9', the axial direction reaction force for the press-fit plugs 9, 9' is negated, hance the sealing pressure of the tapered parts 10, 10' of the press-fit plugs 9, 9' for the end part of the inside pipe 4 is sufficiently maintained by the lock set pressure of the press-fitting cylinders 7, 7', due to which the leakage of the working water 28 from the sealing part is prevented.
COPYRIGHT: (C)1980,JPO&Japio
JP54029375A 1979-03-15 1979-03-15 Double pipe manufacturing equipment Expired JPS5837050B2 (en)

Priority Applications (1)

Application Number Priority Date Filing Date Title
JP54029375A JPS5837050B2 (en) 1979-03-15 1979-03-15 Double pipe manufacturing equipment

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
JP54029375A JPS5837050B2 (en) 1979-03-15 1979-03-15 Double pipe manufacturing equipment

Publications (2)

Publication Number Publication Date
JPS55122632A true JPS55122632A (en) 1980-09-20
JPS5837050B2 JPS5837050B2 (en) 1983-08-13

Family

ID=12274391

Family Applications (1)

Application Number Title Priority Date Filing Date
JP54029375A Expired JPS5837050B2 (en) 1979-03-15 1979-03-15 Double pipe manufacturing equipment

Country Status (1)

Country Link
JP (1) JPS5837050B2 (en)

Cited By (7)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
JPS58215228A (en) * 1982-06-09 1983-12-14 Masanobu Nakamura Manufacture of feed roller
US5170557A (en) * 1991-05-01 1992-12-15 Benteler Industries, Inc. Method of forming a double wall, air gap exhaust duct component
US5363544A (en) * 1993-05-20 1994-11-15 Benteler Industries, Inc. Multi-stage dual wall hydroforming
CN102764809A (en) * 2012-07-17 2012-11-07 浙江摩多巴克斯汽配有限公司 Hydro forming device
CN103240324A (en) * 2013-05-08 2013-08-14 中国重型机械研究院股份公司 Liquid-expansion forming system for bimetal composite pipe
CN103272878A (en) * 2013-06-09 2013-09-04 汤晓明 Method for manufacturing composite steel tube
CN104438471A (en) * 2014-11-13 2015-03-25 西安向阳航天材料股份有限公司 Method for eliminating assembly gap between base and lining of composite tube

Cited By (9)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
JPS58215228A (en) * 1982-06-09 1983-12-14 Masanobu Nakamura Manufacture of feed roller
US5170557A (en) * 1991-05-01 1992-12-15 Benteler Industries, Inc. Method of forming a double wall, air gap exhaust duct component
US5363544A (en) * 1993-05-20 1994-11-15 Benteler Industries, Inc. Multi-stage dual wall hydroforming
US5475911A (en) * 1993-05-20 1995-12-19 Wells; Gary L. Multi-stage dual wall hydroforming
CN102764809A (en) * 2012-07-17 2012-11-07 浙江摩多巴克斯汽配有限公司 Hydro forming device
CN102764809B (en) * 2012-07-17 2014-08-20 浙江摩多巴克斯汽配有限公司 Hydro forming device
CN103240324A (en) * 2013-05-08 2013-08-14 中国重型机械研究院股份公司 Liquid-expansion forming system for bimetal composite pipe
CN103272878A (en) * 2013-06-09 2013-09-04 汤晓明 Method for manufacturing composite steel tube
CN104438471A (en) * 2014-11-13 2015-03-25 西安向阳航天材料股份有限公司 Method for eliminating assembly gap between base and lining of composite tube

Also Published As

Publication number Publication date
JPS5837050B2 (en) 1983-08-13

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