JPS5756117A - Manufacturing method and apparatus for double inner butted pipe - Google Patents

Manufacturing method and apparatus for double inner butted pipe

Info

Publication number
JPS5756117A
JPS5756117A JP55129921A JP12992180A JPS5756117A JP S5756117 A JPS5756117 A JP S5756117A JP 55129921 A JP55129921 A JP 55129921A JP 12992180 A JP12992180 A JP 12992180A JP S5756117 A JPS5756117 A JP S5756117A
Authority
JP
Japan
Prior art keywords
mandrel
pipe
diameter
stopper
die
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.)
Pending
Application number
JP55129921A
Other languages
Japanese (ja)
Inventor
Koichiro Matsuno
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.)
Morita Miyata Corp
Original Assignee
Miyata Industry Co 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 Miyata Industry Co Ltd filed Critical Miyata Industry Co Ltd
Priority to JP55129921A priority Critical patent/JPS5756117A/en
Publication of JPS5756117A publication Critical patent/JPS5756117A/en
Pending legal-status Critical Current

Links

Classifications

    • B—PERFORMING OPERATIONS; TRANSPORTING
    • B21—MECHANICAL METAL-WORKING WITHOUT ESSENTIALLY REMOVING MATERIAL; PUNCHING METAL
    • B21C—MANUFACTURE OF METAL SHEETS, WIRE, RODS, TUBES OR PROFILES, OTHERWISE THAN BY ROLLING; AUXILIARY OPERATIONS USED IN CONNECTION WITH METAL-WORKING WITHOUT ESSENTIALLY REMOVING MATERIAL
    • B21C1/00—Manufacture of metal sheets, metal wire, metal rods, metal tubes by drawing
    • B21C1/16—Metal drawing by machines or apparatus in which the drawing action is effected by other means than drums, e.g. by a longitudinally-moved carriage pulling or pushing the work or stock for making metal sheets, bars, or tubes
    • B21C1/22—Metal drawing by machines or apparatus in which the drawing action is effected by other means than drums, e.g. by a longitudinally-moved carriage pulling or pushing the work or stock for making metal sheets, bars, or tubes specially adapted for making tubular articles
    • B21C1/24—Metal drawing by machines or apparatus in which the drawing action is effected by other means than drums, e.g. by a longitudinally-moved carriage pulling or pushing the work or stock for making metal sheets, bars, or tubes specially adapted for making tubular articles by means of mandrels
    • B21C1/26—Push-bench drawing

Abstract

PURPOSE: To very simply manufacture various kinds of products with high accuracy and high quality, by necking one end of a blank pipe, by inserting a mandrel consisting of a large diameter middle zone and small diameter both ends, and another mandrel in diameter equal to the said small diameter of the former mandrel, into the blank pipe, and then, by forcing the blank pipe to pass through a die.
CONSTITUTION: A blank pipe 5 is held by a stopper 6, and a die 1 is axially pushed forward in order to form a pipe 5'. A mandrel 10 is inserted into this pipe 5' which is then moved in the direction A and is passed through a die 11. hereby, the inner surface of the pipe 5' tightly contacts with the outer surface of the mandrel 10 and is formed into the same shape as that of the mandrel 10, so that thick- walled parts 12, 13 and formed at both ends, and the mandrel 10 is grasped by the pipe 5'. Then, a stopper 14, attached to one axial end on the mandrel-with-drawing side, is moved in the direction B for preventing the retreat motion of the pipe 5', and then, the mandrel 10 is withdrawn in the direction C out of the pipe 5'. hereupon, the diameter of thick-walled part 13 is expanded to form a bulging zone 15. The stopper 16 is opened in the direction D; a mandrel 18 in diameter equal to the inner diameter of the thick-walled part 12 is inserted into the pipe 5'; the part 13 is resumed to a thick-walled part similar to the part 12 by a die 17; finally, the stopper 16 is moved in the direction E, and the mandrel 18 is withdrawn in the direction F.
COPYRIGHT: (C)1982,JPO&Japio
JP55129921A 1980-09-17 1980-09-17 Manufacturing method and apparatus for double inner butted pipe Pending JPS5756117A (en)

Priority Applications (1)

Application Number Priority Date Filing Date Title
JP55129921A JPS5756117A (en) 1980-09-17 1980-09-17 Manufacturing method and apparatus for double inner butted pipe

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
JP55129921A JPS5756117A (en) 1980-09-17 1980-09-17 Manufacturing method and apparatus for double inner butted pipe

Publications (1)

Publication Number Publication Date
JPS5756117A true JPS5756117A (en) 1982-04-03

Family

ID=15021689

Family Applications (1)

Application Number Title Priority Date Filing Date
JP55129921A Pending JPS5756117A (en) 1980-09-17 1980-09-17 Manufacturing method and apparatus for double inner butted pipe

Country Status (1)

Country Link
JP (1) JPS5756117A (en)

Cited By (5)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
JPS6228035A (en) * 1985-07-30 1987-02-06 P-Kotsuku Mahobin Kogyo Kk Production for cover of double layer cup for canteen
JP2008520440A (en) * 2004-11-20 2008-06-19 ゲー カー エヌ ドライブライン インターナショナル ゲゼルシャフト ミット ベシュレンクテル ハフツング Method for shrinking a tube along a stepped mandrel to produce a tube shaft with an undercut in one process
WO2013171935A1 (en) * 2012-05-14 2013-11-21 新日鐵住金株式会社 Method for manufacturing seamless pipe
WO2014067581A1 (en) * 2012-11-02 2014-05-08 Schmittergroup Ag Method for producing different wall thicknesses of a container tube
WO2014082666A1 (en) * 2012-11-28 2014-06-05 Schmittergroup Ag Cylinder tube closed at the end so as to be fluid-tight and method for production thereof

Cited By (9)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
JPS6228035A (en) * 1985-07-30 1987-02-06 P-Kotsuku Mahobin Kogyo Kk Production for cover of double layer cup for canteen
JP2008520440A (en) * 2004-11-20 2008-06-19 ゲー カー エヌ ドライブライン インターナショナル ゲゼルシャフト ミット ベシュレンクテル ハフツング Method for shrinking a tube along a stepped mandrel to produce a tube shaft with an undercut in one process
WO2013171935A1 (en) * 2012-05-14 2013-11-21 新日鐵住金株式会社 Method for manufacturing seamless pipe
CN103974788A (en) * 2012-05-14 2014-08-06 新日铁住金株式会社 Method for manufacturing seamless pipe
CN103974788B (en) * 2012-05-14 2015-08-26 新日铁住金株式会社 The manufacture method of seamless steel pipe
WO2014067581A1 (en) * 2012-11-02 2014-05-08 Schmittergroup Ag Method for producing different wall thicknesses of a container tube
CN104797353A (en) * 2012-11-02 2015-07-22 施密特集团股份公司 Method for producing different wall thicknesses of a container tube
WO2014082666A1 (en) * 2012-11-28 2014-06-05 Schmittergroup Ag Cylinder tube closed at the end so as to be fluid-tight and method for production thereof
CN104994970A (en) * 2012-11-28 2015-10-21 施密特集团股份公司 Cylinder tube closed at the end so as to be fluid-tight and method for production thereof

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