DE502008001532D1 - Bending process for conical tubes - Google Patents

Bending process for conical tubes

Info

Publication number
DE502008001532D1
DE502008001532D1 DE502008001532T DE502008001532T DE502008001532D1 DE 502008001532 D1 DE502008001532 D1 DE 502008001532D1 DE 502008001532 T DE502008001532 T DE 502008001532T DE 502008001532 T DE502008001532 T DE 502008001532T DE 502008001532 D1 DE502008001532 D1 DE 502008001532D1
Authority
DE
Germany
Prior art keywords
sleeve
pipes
bending process
conical tubes
sections
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.)
Active
Application number
DE502008001532T
Other languages
German (de)
Inventor
Ernst Wohlgemuth
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.)
EWO GmbH
Original Assignee
EWO GmbH
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 EWO GmbH filed Critical EWO GmbH
Publication of DE502008001532D1 publication Critical patent/DE502008001532D1/en
Active legal-status Critical Current
Anticipated expiration legal-status Critical

Links

Classifications

    • B—PERFORMING OPERATIONS; TRANSPORTING
    • B21—MECHANICAL METAL-WORKING WITHOUT ESSENTIALLY REMOVING MATERIAL; PUNCHING METAL
    • B21D—WORKING OR PROCESSING OF SHEET METAL OR METAL TUBES, RODS OR PROFILES WITHOUT ESSENTIALLY REMOVING MATERIAL; PUNCHING METAL
    • B21D7/00—Bending rods, profiles, or tubes
    • B21D7/08—Bending rods, profiles, or tubes by passing between rollers or through a curved die
    • B—PERFORMING OPERATIONS; TRANSPORTING
    • B21—MECHANICAL METAL-WORKING WITHOUT ESSENTIALLY REMOVING MATERIAL; PUNCHING METAL
    • B21D—WORKING OR PROCESSING OF SHEET METAL OR METAL TUBES, RODS OR PROFILES WITHOUT ESSENTIALLY REMOVING MATERIAL; PUNCHING METAL
    • B21D9/00—Bending tubes using mandrels or the like
    • B21D9/01—Bending tubes using mandrels or the like the mandrel being flexible and engaging the entire tube length

Landscapes

  • Engineering & Computer Science (AREA)
  • Mechanical Engineering (AREA)
  • Shaping Of Tube Ends By Bending Or Straightening (AREA)
  • Bending Of Plates, Rods, And Pipes (AREA)

Abstract

The method involves moving a bendable sleeve (3) with a constant outer dimension (4) and an inner dimension corresponding to tapering of pipes (1), on the pipes before bending. The pipes together with the moved sleeve are subjected to a bending process. The sleeve is made of plastic i.e. nylon, from sleeve sections (5). The sleeve sections are individually moved on the pipes, and the sleeve sections are connected with each other by a plug connection before the bending process. The pipes with the sleeve are rotated at a longitudinal axis during the bending process.
DE502008001532T 2008-06-25 2008-06-25 Bending process for conical tubes Active DE502008001532D1 (en)

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
EP08011525A EP2138248B1 (en) 2008-06-25 2008-06-25 Bending method for cone-shaped pipes

Publications (1)

Publication Number Publication Date
DE502008001532D1 true DE502008001532D1 (en) 2010-11-25

Family

ID=40558843

Family Applications (1)

Application Number Title Priority Date Filing Date
DE502008001532T Active DE502008001532D1 (en) 2008-06-25 2008-06-25 Bending process for conical tubes

Country Status (3)

Country Link
EP (1) EP2138248B1 (en)
AT (1) ATE484347T1 (en)
DE (1) DE502008001532D1 (en)

Family Cites Families (6)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
DE1263459B (en) 1961-04-28 1968-03-14 Stahlform Berlin Ges Mit Besch Device for bending pipes, in particular conical lighting whip masts
JPS5927661B2 (en) * 1979-04-11 1984-07-07 三恵技研工業株式会社 Bending method for tapered pipe
JP3507369B2 (en) * 1999-08-10 2004-03-15 株式会社太洋 Bending equipment for tapered pipes
DE19956796A1 (en) 1999-11-25 2001-06-13 Palima W Ludwig & Co Bending device for 2- and 3-dimensional profile bending
DE10119030A1 (en) 2000-04-18 2002-01-03 Palima W Ludwig & Co Bending device for bending tubes in two and/or three dimensions has bending rollers in plane perpendicular to tube input axis
DE10326107A1 (en) * 2003-06-06 2005-01-05 Thyssenkrupp Stahl Ag Bending device for thin-walled pipes of metal, in particular steel

Also Published As

Publication number Publication date
EP2138248A1 (en) 2009-12-30
EP2138248B1 (en) 2010-10-13
ATE484347T1 (en) 2010-10-15

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