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EP2446980A3 - Tube and method for processing the ends of tubes - Google Patents

Tube and method for processing the ends of tubes Download PDF

Info

Publication number
EP2446980A3
EP2446980A3 EP11003493A EP11003493A EP2446980A3 EP 2446980 A3 EP2446980 A3 EP 2446980A3 EP 11003493 A EP11003493 A EP 11003493A EP 11003493 A EP11003493 A EP 11003493A EP 2446980 A3 EP2446980 A3 EP 2446980A3
Authority
EP
European Patent Office
Prior art keywords
tube
pipe
double fold
fold
tapered
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
EP11003493A
Other languages
German (de)
French (fr)
Other versions
EP2446980A2 (en
EP2446980B1 (en
Inventor
Erich Spreitzer
Martin Leichtfried
Martin Kirchweger
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.)
WELSER PROFILE AUSTRIA GmbH
Original Assignee
WELSER PROFILE AUSTRIA 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 WELSER PROFILE AUSTRIA GmbH filed Critical WELSER PROFILE AUSTRIA GmbH
Priority to PL11003493T priority Critical patent/PL2446980T3/en
Priority to DE201110101326 priority patent/DE102011101326A1/en
Publication of EP2446980A2 publication Critical patent/EP2446980A2/en
Publication of EP2446980A3 publication Critical patent/EP2446980A3/en
Application granted granted Critical
Publication of EP2446980B1 publication Critical patent/EP2446980B1/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
    • B21D41/00—Application of procedures in order to alter the diameter of tube ends
    • B21D41/04—Reducing; Closing
    • 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
    • B21D17/00—Forming single grooves in sheet metal or tubular or hollow articles
    • B21D17/02—Forming single grooves in sheet metal or tubular or hollow articles by pressing
    • B21D17/025—Forming single grooves in sheet metal or tubular or hollow articles by pressing by pressing tubes axially
    • E—FIXED CONSTRUCTIONS
    • E04—BUILDING
    • E04G—SCAFFOLDING; FORMS; SHUTTERING; BUILDING IMPLEMENTS OR AIDS, OR THEIR USE; HANDLING BUILDING MATERIALS ON THE SITE; REPAIRING, BREAKING-UP OR OTHER WORK ON EXISTING BUILDINGS
    • E04G7/00—Connections between parts of the scaffold
    • E04G7/30—Scaffolding bars or members with non-detachably fixed coupling elements
    • E04G7/301—Scaffolding bars or members with non-detachably fixed coupling elements for connecting bars or members which are parallel or in end-to-end relation

Landscapes

  • Engineering & Computer Science (AREA)
  • Architecture (AREA)
  • Mechanical Engineering (AREA)
  • Civil Engineering (AREA)
  • Structural Engineering (AREA)
  • Shaping Of Tube Ends By Bending Or Straightening (AREA)
  • Mutual Connection Of Rods And Tubes (AREA)
  • Rigid Pipes And Flexible Pipes (AREA)

Abstract

Die Erfindung betrifft ein Rohr (1) mit einem verjüngten Rohrende. Derartige Rohre können ineinandergesteckt werden und finden insbesondere im Gerüstbau Anwendung. Erfindungsgemäß ist vorgesehen, dass der verjüngte Abschnitt mit dem Rest des Rohrs (1) einstückig über einen Doppelfalz (30) verbunden ist, wobei die Falzlagen (2,3,4) des Doppelfalzes (30) unmittelbar aneinander anliegen. Die Erfindung stellt ferner ein Verfahren zur Herstellung eines derartigen Rohrs (1) bereit. Dazu wird zunächst das Rohrende eines Rohrs (1) mit konstantem Durchmesser in einer Formhülse eingezogen. Zwischen dem verjüngten Abschnitt (20) und dem unverformten Teil des Rohrs (10) wird in einem nächsten Verfahrensschritt durch Stauchen des Rohrs (1) ein umlaufender nach außen abstehender Wulst (6) erzeugt. Anschließend wird der Wulst (6) in Richtung des freien Endes des Rohrs (1) umgeschlagen, sodass ein Doppelfalz (30) entsteht, dessen Falzlagen (2,3,4) unmittelbar aneinander anliegen.

Figure imgaf001
The invention relates to a pipe (1) with a tapered pipe end. Such pipes can be plugged into one another and find particular application in scaffolding. According to the invention, it is provided that the tapered section is integrally connected to the remainder of the tube (1) via a double fold (30), wherein the fold layers (2, 3, 4) of the double fold (30) lie directly against one another. The invention further provides a method of manufacturing such a pipe (1). For this purpose, first the tube end of a tube (1) is drawn with a constant diameter in a molded sleeve. Between the tapered portion (20) and the undeformed part of the tube (10), a peripheral outwardly projecting bead (6) is produced in a next method step by swaging the tube (1). Subsequently, the bead (6) in the direction of the free end of the tube (1) is turned over, so that a double fold (30) is formed, the folded layers (2,3,4) lie directly against each other.
Figure imgaf001
EP11003493.1A 2010-10-26 2011-04-28 Scaffold tube and method for processing tube ends Active EP2446980B1 (en)

Priority Applications (2)

Application Number Priority Date Filing Date Title
PL11003493T PL2446980T3 (en) 2010-10-26 2011-04-28 Scaffold tube and method for processing tube ends
DE201110101326 DE102011101326A1 (en) 2011-04-28 2011-05-12 Pipe i.e. hollow-cylindrical scaffolding pipe, for use in scaffold construction, has two sections, which are integrally connected together by double seam, where seam layers of double seam lie directly together

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
DE102010049589A DE102010049589B8 (en) 2010-10-26 2010-10-26 Pipe and method for machining pipe ends

Publications (3)

Publication Number Publication Date
EP2446980A2 EP2446980A2 (en) 2012-05-02
EP2446980A3 true EP2446980A3 (en) 2012-08-01
EP2446980B1 EP2446980B1 (en) 2014-03-19

Family

ID=44883443

Family Applications (1)

Application Number Title Priority Date Filing Date
EP11003493.1A Active EP2446980B1 (en) 2010-10-26 2011-04-28 Scaffold tube and method for processing tube ends

Country Status (5)

Country Link
EP (1) EP2446980B1 (en)
DE (1) DE102010049589B8 (en)
DK (1) DK2446980T3 (en)
ES (1) ES2462016T3 (en)
PL (1) PL2446980T3 (en)

Families Citing this family (4)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
DE102013100765A1 (en) * 2013-01-25 2014-07-31 Peri Gmbh Tube for use in bar of support frame element, has plug-in portion insertable at axial end of adjacent scaffold tube, and residual receiving portion including reduced internal diameter in region of multi-shed layer
DE102013112462A1 (en) * 2013-11-13 2015-05-13 Faurecia Autositze Gmbh Height adjustment of a motor vehicle seat
CN106836787B (en) * 2017-01-20 2020-09-08 郑州大学西亚斯国际学院 Scaffolding for garden construction
DE102017108206B4 (en) 2017-04-18 2020-06-18 Faurecia Autositze Gmbh Adjustment arrangement for an adjustment device of a vehicle seat, method for producing such an adjustment arrangement and vehicle seat

Citations (8)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US2791349A (en) * 1953-06-29 1957-05-07 Exlam Sa Metal container and process for its manufacture
DE1972690U (en) * 1967-09-02 1967-11-16 Eberhard Layher SCAFFOLDING PIPE FOR METAL SCAFFOLDING.
GB1223484A (en) * 1967-02-25 1971-02-24 Tokyu Car Corp Improvements in or relating to energy absorbers
DE1752411A1 (en) * 1968-05-22 1971-07-15 Philips Patentverwaltung Method for manufacturing a telescopic tube
DE9416640U1 (en) * 1994-10-15 1994-12-01 Reiche & Co Device for absorbing impact energy and suspending a bumper on a vehicle
WO2001014077A1 (en) * 1999-08-24 2001-03-01 Cosma International Inc. Hydroformed collapsible drive shaft and steering shaft and methods of making the same
JP2001241478A (en) * 2000-02-29 2001-09-07 Nkk Corp Collision energy absorbing structure
WO2005021326A2 (en) * 2003-08-26 2005-03-10 Shape Corporation Tubular energy management system for absorbing impact energy

Family Cites Families (2)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
DE2654439A1 (en) * 1976-12-01 1978-06-08 Rossi Luigi Dr Coupling for cold formed pipe ends - has flange around pipe end hardened and drilled for passage of pin
DE102008037549B3 (en) * 2008-11-12 2009-12-03 Heinrich Müller Maschinenfabrik GmbH Thin-walled tubular workpiece e.g. reservoir tube, producing method for shock absorber of vehicle, involves removing punching tool from workpiece that is transformed, and pulling out support mandrel from transformed workpiece

Patent Citations (8)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US2791349A (en) * 1953-06-29 1957-05-07 Exlam Sa Metal container and process for its manufacture
GB1223484A (en) * 1967-02-25 1971-02-24 Tokyu Car Corp Improvements in or relating to energy absorbers
DE1972690U (en) * 1967-09-02 1967-11-16 Eberhard Layher SCAFFOLDING PIPE FOR METAL SCAFFOLDING.
DE1752411A1 (en) * 1968-05-22 1971-07-15 Philips Patentverwaltung Method for manufacturing a telescopic tube
DE9416640U1 (en) * 1994-10-15 1994-12-01 Reiche & Co Device for absorbing impact energy and suspending a bumper on a vehicle
WO2001014077A1 (en) * 1999-08-24 2001-03-01 Cosma International Inc. Hydroformed collapsible drive shaft and steering shaft and methods of making the same
JP2001241478A (en) * 2000-02-29 2001-09-07 Nkk Corp Collision energy absorbing structure
WO2005021326A2 (en) * 2003-08-26 2005-03-10 Shape Corporation Tubular energy management system for absorbing impact energy

Also Published As

Publication number Publication date
ES2462016T3 (en) 2014-05-22
EP2446980A2 (en) 2012-05-02
DK2446980T3 (en) 2014-05-05
DE102010049589B3 (en) 2012-04-26
PL2446980T3 (en) 2014-07-31
DE102010049589B8 (en) 2012-09-13
EP2446980B1 (en) 2014-03-19

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