EP1479458A2 - Method for manufacturing tubes and profiles - Google Patents

Method for manufacturing tubes and profiles Download PDF

Info

Publication number
EP1479458A2
EP1479458A2 EP04012217A EP04012217A EP1479458A2 EP 1479458 A2 EP1479458 A2 EP 1479458A2 EP 04012217 A EP04012217 A EP 04012217A EP 04012217 A EP04012217 A EP 04012217A EP 1479458 A2 EP1479458 A2 EP 1479458A2
Authority
EP
European Patent Office
Prior art keywords
strip material
length
profile
endless
strip
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
EP04012217A
Other languages
German (de)
French (fr)
Other versions
EP1479458A3 (en
EP1479458B1 (en
Inventor
Andreas Dr.-Ing. Hauger
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.)
Muhr und Bender KG
Original Assignee
Muhr und Bender KG
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
Family has litigation
First worldwide family litigation filed litigation Critical https://patents.darts-ip.com/?family=33039311&utm_source=google_patent&utm_medium=platform_link&utm_campaign=public_patent_search&patent=EP1479458(A2) "Global patent litigation dataset” by Darts-ip is licensed under a Creative Commons Attribution 4.0 International License.
Application filed by Muhr und Bender KG filed Critical Muhr und Bender KG
Publication of EP1479458A2 publication Critical patent/EP1479458A2/en
Publication of EP1479458A3 publication Critical patent/EP1479458A3/en
Application granted granted Critical
Publication of EP1479458B1 publication Critical patent/EP1479458B1/en
Anticipated expiration legal-status Critical
Expired - Lifetime legal-status Critical Current

Links

Images

Classifications

    • BPERFORMING OPERATIONS; TRANSPORTING
    • B21MECHANICAL METAL-WORKING WITHOUT ESSENTIALLY REMOVING MATERIAL; PUNCHING METAL
    • B21CMANUFACTURE OF METAL SHEETS, WIRE, RODS, TUBES OR PROFILES, OTHERWISE THAN BY ROLLING; AUXILIARY OPERATIONS USED IN CONNECTION WITH METAL-WORKING WITHOUT ESSENTIALLY REMOVING MATERIAL
    • B21C37/00Manufacture of metal sheets, bars, wire, tubes or like semi-manufactured products, not otherwise provided for; Manufacture of tubes of special shape
    • B21C37/06Manufacture of metal sheets, bars, wire, tubes or like semi-manufactured products, not otherwise provided for; Manufacture of tubes of special shape of tubes or metal hoses; Combined procedures for making tubes, e.g. for making multi-wall tubes
    • B21C37/15Making tubes of special shape; Making tube fittings
    • B21C37/16Making tubes with varying diameter in longitudinal direction
    • BPERFORMING OPERATIONS; TRANSPORTING
    • B21MECHANICAL METAL-WORKING WITHOUT ESSENTIALLY REMOVING MATERIAL; PUNCHING METAL
    • B21CMANUFACTURE OF METAL SHEETS, WIRE, RODS, TUBES OR PROFILES, OTHERWISE THAN BY ROLLING; AUXILIARY OPERATIONS USED IN CONNECTION WITH METAL-WORKING WITHOUT ESSENTIALLY REMOVING MATERIAL
    • B21C37/00Manufacture of metal sheets, bars, wire, tubes or like semi-manufactured products, not otherwise provided for; Manufacture of tubes of special shape
    • B21C37/06Manufacture of metal sheets, bars, wire, tubes or like semi-manufactured products, not otherwise provided for; Manufacture of tubes of special shape of tubes or metal hoses; Combined procedures for making tubes, e.g. for making multi-wall tubes
    • B21C37/08Making tubes with welded or soldered seams
    • YGENERAL TAGGING OF NEW TECHNOLOGICAL DEVELOPMENTS; GENERAL TAGGING OF CROSS-SECTIONAL TECHNOLOGIES SPANNING OVER SEVERAL SECTIONS OF THE IPC; TECHNICAL SUBJECTS COVERED BY FORMER USPC CROSS-REFERENCE ART COLLECTIONS [XRACs] AND DIGESTS
    • Y10TECHNICAL SUBJECTS COVERED BY FORMER USPC
    • Y10TTECHNICAL SUBJECTS COVERED BY FORMER US CLASSIFICATION
    • Y10T29/00Metal working
    • Y10T29/49Method of mechanical manufacture
    • Y10T29/49616Structural member making
    • Y10T29/49622Vehicular structural member making
    • YGENERAL TAGGING OF NEW TECHNOLOGICAL DEVELOPMENTS; GENERAL TAGGING OF CROSS-SECTIONAL TECHNOLOGIES SPANNING OVER SEVERAL SECTIONS OF THE IPC; TECHNICAL SUBJECTS COVERED BY FORMER USPC CROSS-REFERENCE ART COLLECTIONS [XRACs] AND DIGESTS
    • Y10TECHNICAL SUBJECTS COVERED BY FORMER USPC
    • Y10TTECHNICAL SUBJECTS COVERED BY FORMER US CLASSIFICATION
    • Y10T29/00Metal working
    • Y10T29/49Method of mechanical manufacture
    • Y10T29/49789Obtaining plural product pieces from unitary workpiece
    • YGENERAL TAGGING OF NEW TECHNOLOGICAL DEVELOPMENTS; GENERAL TAGGING OF CROSS-SECTIONAL TECHNOLOGIES SPANNING OVER SEVERAL SECTIONS OF THE IPC; TECHNICAL SUBJECTS COVERED BY FORMER USPC CROSS-REFERENCE ART COLLECTIONS [XRACs] AND DIGESTS
    • Y10TECHNICAL SUBJECTS COVERED BY FORMER USPC
    • Y10TTECHNICAL SUBJECTS COVERED BY FORMER US CLASSIFICATION
    • Y10T29/00Metal working
    • Y10T29/49Method of mechanical manufacture
    • Y10T29/49826Assembling or joining
    • Y10T29/49828Progressively advancing of work assembly station or assembled portion of work
    • Y10T29/49829Advancing work to successive stations [i.e., assembly line]
    • YGENERAL TAGGING OF NEW TECHNOLOGICAL DEVELOPMENTS; GENERAL TAGGING OF CROSS-SECTIONAL TECHNOLOGIES SPANNING OVER SEVERAL SECTIONS OF THE IPC; TECHNICAL SUBJECTS COVERED BY FORMER USPC CROSS-REFERENCE ART COLLECTIONS [XRACs] AND DIGESTS
    • Y10TECHNICAL SUBJECTS COVERED BY FORMER USPC
    • Y10TTECHNICAL SUBJECTS COVERED BY FORMER US CLASSIFICATION
    • Y10T29/00Metal working
    • Y10T29/49Method of mechanical manufacture
    • Y10T29/49826Assembling or joining
    • Y10T29/49947Assembling or joining by applying separate fastener
    • Y10T29/49966Assembling or joining by applying separate fastener with supplemental joining
    • Y10T29/49968Metal fusion joining
    • YGENERAL TAGGING OF NEW TECHNOLOGICAL DEVELOPMENTS; GENERAL TAGGING OF CROSS-SECTIONAL TECHNOLOGIES SPANNING OVER SEVERAL SECTIONS OF THE IPC; TECHNICAL SUBJECTS COVERED BY FORMER USPC CROSS-REFERENCE ART COLLECTIONS [XRACs] AND DIGESTS
    • Y10TECHNICAL SUBJECTS COVERED BY FORMER USPC
    • Y10TTECHNICAL SUBJECTS COVERED BY FORMER US CLASSIFICATION
    • Y10T29/00Metal working
    • Y10T29/51Plural diverse manufacturing apparatus including means for metal shaping or assembling
    • Y10T29/5185Tube making

Definitions

  • the invention relates to a method for producing pipes and profiles with over the length of variable wall thickness.
  • EP 0 788 849 A1 discloses a similar process for the production of pipes with sections of different wall thickness, in which an initial level Sheet metal by targeted partial wall thickness reduction areas of different Wall thickness arise with parallel course. This is the rolled Sheet metal cut, formed into a tube and along the abutting edges joined, in particular welded.
  • DD 244 083 A1 discloses a process for the production of pipes and hollow profiles with longitudinally changing inner diameter known.
  • the so differently rolled out metal strip is then in a profile plant profiled to the tube or hollow profile.
  • the periodic change from rolled to unrolled strip sections limited the rolling speed and can cause weak spots in the band at the Transitions lead.
  • the passage of the non-rolled band sections through the Rolling device is given no guidance of the metal strip. This is not an exact one Length measurement of the non-rolled band sections possible.
  • process control becomes the strip material after the high speed taking flexible rolls with a first winding speed on a Coil wound and for forming the strip material to the endless tube or Profile with a second lower winding speed, which on the forming optimized for endless tube or profile, unwound from this coil.
  • Systems for bending round to a tube in the longitudinal direction of the strip material or for forming into a profile in the longitudinal direction of the strip material with corresponding Roller assemblies with forming rollers are known in the art. Such systems include a plurality of consecutively in the production direction Forming rolls with regularly changing roll shape and / or axis position.
  • the tubes and profiles may be open in cross-section slotted tubes or Profile or cross-section closed tubes or profiles act.
  • preferred Procedure is the endless pipe or profile to the closed pipe or Longitudinal profile - especially in blunt joint - welded.
  • the inner diameter or cross-section are kept constant while the variable Wall thickness at the outer diameter or cross-section maps.
  • the individual Pipe or profile pieces formed after cutting to such an extent that they over the length have variable cross-sections.
  • Such pieces of pipe are used in particular Automotive engineering used in many applications, especially as a carrier with defined non-uniform deformation behavior (crash elements) or with defined non-uniform load behavior (bending beam).
  • the length remains constant over the length Round tubes formed so that at least one longitudinal section out of round, in particular is flattened laterally in cross section.
  • FIG. 1 An embodiment of such a tube is shown in the single drawing.
  • This shows in representation a an inventive tube 11 in longitudinal section.
  • first sections 12, 13, 14 with greater wall thickness and one-sided Flattening 18 and two sections 16, 17 of lesser wall thickness with undeformed circular cross section recognizable.
  • a longitudinal seam 19 is marked, which is not directly affected by the subsequent forming of the tube.

Landscapes

  • Engineering & Computer Science (AREA)
  • Mechanical Engineering (AREA)
  • Metal Rolling (AREA)
  • Rigid Pipes And Flexible Pipes (AREA)
  • Heat Treatment Of Articles (AREA)

Abstract

The tube and stock producing process involves producing a tube (11) or stock with varying wall thickness along the length. Endless strip material is flexibly rolled with variably reduced final thickness in the longitudinal direction of the strip. The strip material is deformed into an endless tube or stock article. This is then cut into sections (12, 13, 14, 16).

Description

Die Erfindung betrifft ein Verfahren zum Herstellen von Rohren und Profilen mit über der Länge variabler Wandstärke.The invention relates to a method for producing pipes and profiles with over the length of variable wall thickness.

Aus der DE 104 875 ist es bekannt, tafel- oder streifenförmige Blechstücke so auszuwalzen, daß parallele Streifen unterschiedlicher Wandstärke an dem Blechstück entstehen. Danach wird das Blechstück quer zu diesen Streifen rundgebogen und zu einem Rohr verlötet, wodurch das Rohr Längsabschnitte unterschiedlicher Wandstärke erhält.From DE 104 875 it is known to strip sheet-shaped or strip-shaped sheet metal pieces, that parallel strips of different wall thickness on the piece of sheet metal arise. Thereafter, the piece of sheet metal is bent around and bent around these strips soldered to a tube, whereby the tube longitudinal sections of different wall thickness receives.

Aus der EP 0 788 849 A1 ist ein gleichartiges Verfahren zur Herstellung von Rohren mit Abschnitten unterschiedlicher Wandstärke bekannt, bei dem aus einem anfangsebenen Blech durch gezielte partielle Wanddickenreduktion Bereiche unterschiedlicher Wanddicke mit zueinander parallelen Verlauf entstehen. Hierbei wird das gewalzte Blech zugeschnitten, zu einem Rohr umgeformt und entlang der Stoßkanten gefügt, insbesondere verschweißt.EP 0 788 849 A1 discloses a similar process for the production of pipes with sections of different wall thickness, in which an initial level Sheet metal by targeted partial wall thickness reduction areas of different Wall thickness arise with parallel course. This is the rolled Sheet metal cut, formed into a tube and along the abutting edges joined, in particular welded.

Aus der DD 244 083 A1 ist ein Verfahren zur Herstellung von Rohren und Hohlprofilen mit in Längsrichtung sich änderndem Innendurchmesser bekannt. Hierbei werden vorbestimmte Abschnitte eines Metallbandes ausgewalzt, während die übrigen Abschnitte ihre ungewalzte Form und damit die ursprüngliche Materialstärke beibehalten. Das so unterschiedlich ausgewalzte Metallband wird in einer Profilanlage dann zum Rohr oder Hohlprofil profiliert.From DD 244 083 A1 discloses a process for the production of pipes and hollow profiles with longitudinally changing inner diameter known. Here are predetermined sections of a metal strip rolled while the remaining sections maintain their non-rolled shape and thus the original material thickness. The so differently rolled out metal strip is then in a profile plant profiled to the tube or hollow profile.

Der periodische Wechsel von ausgewalzten zu ungewalzten Bandabschnitten beschränkt die Walzgeschwindigkeit und kann zu Schwachstellen im Band an den Übergängen führen. Beim Durchlauf der ungewalzten Bandabschnitte durch die Walzeinrichtung ist keine Führung des Metallbandes gegeben. Damit ist keine exakte Längenbemessung der ungewalzten Bandabschnitte möglich.The periodic change from rolled to unrolled strip sections limited the rolling speed and can cause weak spots in the band at the Transitions lead. During the passage of the non-rolled band sections through the Rolling device is given no guidance of the metal strip. This is not an exact one Length measurement of the non-rolled band sections possible.

Der vorliegenden Erfindung liegt die Aufgabe zugrunde, ein verbessertes Herstellungsverfahren mit erhöhter Produktivität für Rohre und Profile der genannten Art in verbesserter Qualität bereitzustellen. Die Lösung hierfür besteht in einem Verfahren mit den erfindungsgemäßen Schritten:

  • flexibles Walzen von endlosem Bandmaterial mit in Längsrichtung des Bandmaterials variabler, durchgehend gegenüber der Ausgangsdicke reduzierter Enddicke,
  • Umformen des Bandmaterials zu einem endlosen Rohr oder Profil,
  • Ablängen einzelner Rohr- oder Profilstücke vom endlosen Rohr oder Profil.
  • The present invention has for its object to provide an improved production method with increased productivity for pipes and profiles of the type mentioned in improved quality. The solution to this consists in a method with the steps according to the invention:
  • flexible rolling of endless strip material with variable in the longitudinal direction of the strip material, continuously reduced compared to the initial thickness final thickness,
  • Forming the strip material into an endless tube or profile,
  • Cutting to length individual pipe or profile pieces from the endless pipe or profile.
  • Mit diesem Verfahren wird die Technik des flexiblen Walzen von endlosem Bandmaterial, wie sie z. B. in der Deutschen Patentanmeldung 103 15 357.8 der Anmelderin beschrieben ist, für die Herstellung von Rohren und Profilen der genannten Art zur Erhöhung der Produktivität erschlossen.With this method, the technique of flexible rolling of endless strip material, as they are z. B. in German Patent Application 103 15 357.8 of the Applicant is described for the production of pipes and profiles of the type mentioned Increased productivity.

    Hierbei ist es grundsätzlich möglich, die Walzgeschwindigkeit an die bestmögliche Umformgeschwindigkeit für das Umformen zum endlosen Rohr oder Profil anzupassen, so daß sämtliche Verfahrensschritte synchron ablaufen können. In bevorzugter Verfahrensführung wird jedoch das Bandmaterial nach dem mit hoher Geschwindigkeit erfolgenden flexiblen Walzen mit einer ersten Wickelgeschwindigkeit auf einen Coil aufgewickelt und zum Umformen des Bandmaterials zum endlosen Rohr oder Profil mit einer zweiten geringeren Wickelgeschwindigkeit, die auf das Umformen zum endlosen Rohr oder Profil optimiert ist, von diesem Coil abgewickelt.Here it is possible in principle, the rolling speed to the best possible Adapt forming speed for forming to continuous tube or profile, so that all process steps can run synchronously. In preferred However, process control becomes the strip material after the high speed taking flexible rolls with a first winding speed on a Coil wound and for forming the strip material to the endless tube or Profile with a second lower winding speed, which on the forming optimized for endless tube or profile, unwound from this coil.

    Anlagen zum Rundbiegen zu einem Rohr in Längsrichtung des Bandmaterials bzw. zum Umformen zu einem Profil in Längsrichtung des Bandmaterials mit entsprechender Walzenanordnung mit formgebenden Walzen sind in der Technik bekannt. Solche Anlagen umfassen eine Vielzahl von in Produktionsrichtung hintereinanderliegenden Formwalzen mit sich regelmäßig ändernder Walzenform und/oder Achslage. Systems for bending round to a tube in the longitudinal direction of the strip material or for forming into a profile in the longitudinal direction of the strip material with corresponding Roller assemblies with forming rollers are known in the art. Such systems include a plurality of consecutively in the production direction Forming rolls with regularly changing roll shape and / or axis position.

    Bei den Rohren und Profilen kann es sich um im Querschnitt offene Schlitzrohre oder Profile oder im Querschnitt geschlossene Rohre oder Profile handeln. In bevorzugter Verfahrensführung wird das endlose Rohr oder Profil zum geschlossen Rohr oder Profil längs - insbesondere in stumpfem Stoß - verschweißt. Hierbei kann der Innendurchmesser oder -querschnitt konstant gehalten werden, während sich die variable Wanddicke am Außendurchmesser oder -querschnitt abbildet.The tubes and profiles may be open in cross-section slotted tubes or Profile or cross-section closed tubes or profiles act. In preferred Procedure is the endless pipe or profile to the closed pipe or Longitudinal profile - especially in blunt joint - welded. Here, the inner diameter or cross-section are kept constant while the variable Wall thickness at the outer diameter or cross-section maps.

    Nach einer weiterführenden günstigen Verfahrensgestaltung werden die einzelnen Rohr- oder Profilstücke nach dem Ablängen derart umgeformt, daß sie über der Länge variable Querschnitte aufweisen. Derartige Rohrstücke werden insbesondere im Kraftfahrzeugbau in vielen Verwendungszwecken eingesetzt, insbesondere als Träger mit definiertem ungleichförmigen Verformungsverhalten (Crashelemente) oder mit definiertem ungleichförmigen Belastungsverhalten (Biegeträger).After a continuing favorable process design, the individual Pipe or profile pieces formed after cutting to such an extent that they over the length have variable cross-sections. Such pieces of pipe are used in particular Automotive engineering used in many applications, especially as a carrier with defined non-uniform deformation behavior (crash elements) or with defined non-uniform load behavior (bending beam).

    Nach einer besondere Verfahrensführung werden zunächst über der Länge gleichbleibend runde Rohre so umgeformt, daß zumindest ein Längsabschnitt unrund, insbesondere im Querschnitt seitlich abgeflacht ist.After a special procedure, the length remains constant over the length Round tubes formed so that at least one longitudinal section out of round, in particular is flattened laterally in cross section.

    Beim flexiblen Walzen werden stetige Übergänge zwischen den einzelnen Bandabschnitten bezüglich der Dicke hergestellt. Es findet insbesondere eine Reduzierung der Ausgangsdicke von durchgehend mindestens 5 % statt. Hierbei sollten sich aneinander anschließende Bandabschnitte in der Enddicke um mindestens 20 %, insbesondere mehr als 25 % unterscheiden. Die Übergänge zwischen einzelnen Bandabschnitten unterschiedlicher konstanter Bandenddicke sollen so gestreckt sein, daß ein Gradient aus Dickenänderung zu Bandlänge von höchstens 1:40 entsteht.When flexible rolling continuous transitions between the individual band sections made in thickness. It finds in particular a reduction the initial thickness of at least 5% throughout. This should be together subsequent strip sections in the final thickness by at least 20%, in particular differentiate more than 25%. The transitions between individual band sections different constant Bandenddicke should be stretched so that a gradient of thickness change to strip length of at most 1:40 is formed.

    Ein Ausführungsbeispiel für ein solches Rohr ist in der einzigen Zeichnung dargestellt. Diese zeigt in Darstellung a ein erfindungsgemäßes Rohr 11 im Längsschnitt. An dem Rohr sind erste Abschnitte 12, 13, 14 mit größerer Wandstärke und einseitigen Abflachungen 18 sowie zwei Abschnitte 16, 17 geringerer Wandstärke mit unverformtem kreisrunden Querschnitt erkennbar. Weiterhin ist eine Längsnaht 19 markiert, die vom nachträglichen Umformen des Rohres nicht unmittelbar betroffen ist.An embodiment of such a tube is shown in the single drawing. This shows in representation a an inventive tube 11 in longitudinal section. On the tube are first sections 12, 13, 14 with greater wall thickness and one-sided Flattening 18 and two sections 16, 17 of lesser wall thickness with undeformed circular cross section recognizable. Furthermore, a longitudinal seam 19 is marked, which is not directly affected by the subsequent forming of the tube.

    Claims (10)

    Verfahren zum Herstellen von Rohren und Profilen mit über der Länge variabler Wanddicke,
    mit den Schritten,
    flexibles Walzen von endlosem Bandmaterial mit in Längsrichtung des Bandmaterials variabler, durchgehend gegenüber der Ausgangsdicke reduzierter Enddicke,
    Umformen des Bandmaterials zu einem endlosen Rohr oder Profil,
    Ablängen einzelner Rohr- oder Profilstücke vom endlosen Rohr oder Profil.
    Method for producing pipes and profiles with wall thickness variable over the length,
    with the steps,
    flexible rolling of endless strip material with variable in the longitudinal direction of the strip material, continuously reduced compared to the initial thickness final thickness,
    Forming the strip material into an endless tube or profile,
    Cutting to length individual pipe or profile pieces from the endless pipe or profile.
    Verfahren nach Anspruch 1,
    dadurch gekennzeichnet, daß nach dem flexiblen Walzen das endlose Bandmaterial mit einer ersten Wickelgeschwindigkeit auf einen Coil aufgewickelt wird und daß das endlose Bandmaterial von diesem Coil zum Umformen des Bandmaterials mit einer zweiten geringeren Wickelgeschwindigkeit abgewickelt wird.
    Method according to claim 1,
    characterized in that after the flexible rolling, the endless strip material is wound on a coil at a first winding speed, and that the endless strip material is unwound from this coil for forming the strip material at a second lower winding speed.
    Verfahren nach einem der Ansprüche 1 oder 2,
    dadurch gekennzeichnet, daß das Bandmaterial nach dem Umformen und vor dem Ablängen zum geschlossenen Rohr oder Profil längs verschweißt wird.
    Method according to one of claims 1 or 2,
    characterized in that the strip material is welded longitudinally after forming and before cutting to a closed tube or profile.
    Verfahren nach einem der Ansprüche 1 bis 3,
    dadurch gekennzeichnet, daß die einzelnen Rohr- oder Profilstücke nach dem Ablängen zu über der Länge variablen Querschnitten umgeformt werden.
    Method according to one of claims 1 to 3,
    characterized in that the individual pipe or profile pieces are transformed after cutting to over the length of variable cross-sections.
    Verfahren nach Anspruch 4,
    dadurch gekennzeichnet, daß die Umformung durch hydraulische Innendruckumformverfahren erfolgt.
    Method according to claim 4,
    characterized in that the deformation takes place by hydraulic internal pressure forming process.
    Verfahren nach einem der Ansprüche 4 oder 5,
    dadurch gekennzeichnet, daß ein zunächst über der Länge gleichbleibend rundes Rohrstück so umgeformt wird, daß zumindest ein Längsabschnitt unrund, insbesondere einseitig abgeflacht ist.
    Method according to one of claims 4 or 5,
    characterized in that a first over the length of consistently round pipe section is reshaped so that at least one longitudinal section is non-circular, in particular flattened on one side.
    Verfahren nach einem der Ansprüche 4 oder 5,
    dadurch gekennzeichnet, daß ein Profilstück mit zunächst über der Länge gleichbleibendem Querschnitt so umgeformt wird, daß zumindest ein Längsabschnitt im Querschnitt davon abweicht.
    Method according to one of claims 4 or 5,
    characterized in that a profile piece is initially formed over the length of constant cross section so that at least one longitudinal section deviates in cross section thereof.
    Verfahren nach einem der Ansprüche 1 bis 7,
    dadurch gekennzeichnet, daß beim flexiblen Walzen eine Reduzierung der Ausgangsdicke von durchgehend mindestens 5 % stattfindet.
    Method according to one of claims 1 to 7,
    characterized in that during flexible rolling, a reduction of the initial thickness of at least 5% takes place.
    Verfahren nach einem der Ansprüche 1 bis 8,
    dadurch gekennzeichnet, daß sich aneinander anschließende Bandabschnitte um mindestens 20 %, insbesondere mehr als 25 % in der Enddicke unterscheiden.
    Method according to one of claims 1 to 8,
    characterized in that adjoining band sections differ by at least 20%, in particular more than 25% in the final thickness.
    Verfahren nach einem der Ansprüche 1 bis 9,
    dadurch gekennzeichnet, daß im Bereich der Übergänge zwischen den einzelnen Bandabschnitten ein Gradient aus Dickenänderung zu Bandlänge von höchstens 1:40 erzeugt wird.
    Method according to one of claims 1 to 9,
    characterized in that in the region of the transitions between the individual strip sections, a gradient of thickness change to strip length of at most 1:40 is generated.
    EP04012217A 2003-05-22 2004-05-24 Method for manufacturing tubes and profiles Expired - Lifetime EP1479458B1 (en)

    Applications Claiming Priority (2)

    Application Number Priority Date Filing Date Title
    DE10323694 2003-05-22
    DE10323694A DE10323694A1 (en) 2003-05-22 2003-05-22 Method for producing pipes and profiles

    Publications (3)

    Publication Number Publication Date
    EP1479458A2 true EP1479458A2 (en) 2004-11-24
    EP1479458A3 EP1479458A3 (en) 2004-12-01
    EP1479458B1 EP1479458B1 (en) 2007-08-08

    Family

    ID=33039311

    Family Applications (1)

    Application Number Title Priority Date Filing Date
    EP04012217A Expired - Lifetime EP1479458B1 (en) 2003-05-22 2004-05-24 Method for manufacturing tubes and profiles

    Country Status (6)

    Country Link
    US (1) US7107682B2 (en)
    EP (1) EP1479458B1 (en)
    JP (1) JP4173118B2 (en)
    AT (1) ATE369216T1 (en)
    DE (2) DE10323694A1 (en)
    ES (1) ES2291772T3 (en)

    Cited By (4)

    * Cited by examiner, † Cited by third party
    Publication number Priority date Publication date Assignee Title
    DE102004037060A1 (en) * 2004-07-30 2006-03-23 Trw Automotive Gmbh Actuating drive for device for raising of engine bonnet of motor vehicle has control unit which automatically triggers return movement of actuating component back into initial position
    EP1835199A3 (en) * 2006-03-14 2007-11-07 Muhr und Bender KG Spring leg pipe made of flexibly rolled sheet metal
    DE102011051057A1 (en) 2011-06-14 2012-09-06 Muhr Und Bender Kg Method for manufacturing tube for exhaust systems of motor vehicles, involves generating regions of higher thickness and other regions of lower thickness in longitudinal direction of strip material
    CN111015082A (en) * 2019-11-06 2020-04-17 武汉钢铁江北集团冷弯型钢有限公司 Production method of cold-bending rectangular steel pipe with high surface quality

    Families Citing this family (10)

    * Cited by examiner, † Cited by third party
    Publication number Priority date Publication date Assignee Title
    DE102004017343A1 (en) * 2004-04-06 2005-11-03 Muhr Und Bender Kg Method for producing profiles with a longitudinally variable cross section
    DE102004023885A1 (en) * 2004-05-12 2005-12-08 Muhr Und Bender Kg Flexible rolling of light metals
    DE102005011764A1 (en) * 2005-03-11 2006-09-14 Muhr Und Bender Kg Tubes with integrated flange, in particular of flexibly rolled material, for chassis and body structural parts
    US8506015B2 (en) 2009-04-08 2013-08-13 C&D Zodiac, Inc. Vehicle seat tubing having variable wall thickness
    US8356506B2 (en) * 2011-02-25 2013-01-22 Szuba Consulting, Inc. Method of forming industrial housings
    US9528327B1 (en) 2011-09-23 2016-12-27 Global Tubing Llc Coiled tubing optimized for long, horizontal completions
    JP6269613B2 (en) * 2015-08-05 2018-01-31 トヨタ自動車株式会社 Body frame structure and manufacturing method thereof
    DE102016102707A1 (en) * 2016-02-16 2017-08-17 Recaro Aircraft Seating Gmbh & Co. Kg Aircraft seat device
    WO2022201014A1 (en) 2021-03-24 2022-09-29 Tata Steel Limited An apparatus for thickening a tube at its intermediate portion
    BR112023010459A2 (en) 2021-03-25 2023-10-03 Tata Steel Ltd A DEVICE FOR EXTERNALLY THICKENING A TUBE IN ITS INTERMEDIATE PORTION

    Citations (4)

    * Cited by examiner, † Cited by third party
    Publication number Priority date Publication date Assignee Title
    EP0014474A1 (en) * 1979-02-09 1980-08-20 Vereinigte Metallwerke Ranshofen-Berndorf AG Method for the production of a tube
    EP0788849A1 (en) * 1996-02-07 1997-08-13 Benteler Ag Method of manufacturing a pipe with sections of differing wall thickness and a pipe with sections of differing wall thicknesses
    EP0938937A1 (en) * 1998-02-26 1999-09-01 VAW alutubes GmbH Method of manufacturing bodywork and chassis parts for vehicles
    EP1272291B1 (en) * 2000-04-03 2004-01-14 Corus Staal BV Process for producing a tubular component

    Family Cites Families (20)

    * Cited by examiner, † Cited by third party
    Publication number Priority date Publication date Assignee Title
    DE244083C (en)
    DE104875C (en) *
    US3124872A (en) * 1964-03-17 Method and apparatus for severing a continuous
    US2444463A (en) * 1945-06-26 1948-07-06 American Can Co Method of producing can bodies
    US4232813A (en) * 1978-03-10 1980-11-11 Eaton-Leonard Corporation Method and apparatus for making bent pipe
    US4628721A (en) * 1984-05-16 1986-12-16 Kaiser Steel Corporation Method of roll forming cylindrical pipe
    US4706488A (en) * 1984-05-16 1987-11-17 Kaiser Steel Corporation Method of roll forming cylindrical pipe
    US4660754A (en) * 1985-07-15 1987-04-28 Allied Tube & Conduit Corporation Process of forming welded tubing
    DE3529160A1 (en) * 1985-08-14 1987-02-26 Nippon Steel Corp MOLD ROLLING DEVICE
    DD244083A1 (en) * 1985-12-23 1987-03-25 Metalleichtbaukombinat Ingenie METHOD AND DEVICE FOR PRODUCING PIPES
    US4796797A (en) * 1986-10-14 1989-01-10 Nisshin Steel Co., Ltd. Method for making thin-walled metal pipes
    KR930009932B1 (en) * 1987-12-09 1993-10-13 후지 꾸라 덴센 가부시끼가이샤 Heat pipe and method of manufacturing the same
    US5005395A (en) * 1988-03-23 1991-04-09 Sumitomo Metal Industries, Ltd. Method of manufacturing electric welded pipes under hot conditions
    JPH0729147B2 (en) * 1988-09-09 1995-04-05 日新製鋼株式会社 Method for manufacturing thin metal tube
    DE4212049C2 (en) * 1992-04-07 1996-04-25 Mannesmann Ag Process for the temporary storage of flexible metal strip
    JPH10272513A (en) * 1997-03-28 1998-10-13 Hiroshi Ona Tube, manufacture of tube and manufacture device for tube
    DE19740323A1 (en) * 1997-09-13 1999-03-25 Siempelkamp Pressen Sys Gmbh Method for producing hollow sections, in particular, pipes
    AU3535999A (en) * 1999-04-05 2000-10-23 Nakata Manufacturing Co., Ltd. Method for roll forming steel pipes, and equipment for same
    US6643931B2 (en) * 2000-07-12 2003-11-11 Shape Corporation Method of manufacturing a one-piece tubular doorbeam
    US6792681B2 (en) * 2002-05-29 2004-09-21 Meritor Suspension Systems Company, Inc. Forged in-line tubular process

    Patent Citations (4)

    * Cited by examiner, † Cited by third party
    Publication number Priority date Publication date Assignee Title
    EP0014474A1 (en) * 1979-02-09 1980-08-20 Vereinigte Metallwerke Ranshofen-Berndorf AG Method for the production of a tube
    EP0788849A1 (en) * 1996-02-07 1997-08-13 Benteler Ag Method of manufacturing a pipe with sections of differing wall thickness and a pipe with sections of differing wall thicknesses
    EP0938937A1 (en) * 1998-02-26 1999-09-01 VAW alutubes GmbH Method of manufacturing bodywork and chassis parts for vehicles
    EP1272291B1 (en) * 2000-04-03 2004-01-14 Corus Staal BV Process for producing a tubular component

    Cited By (4)

    * Cited by examiner, † Cited by third party
    Publication number Priority date Publication date Assignee Title
    DE102004037060A1 (en) * 2004-07-30 2006-03-23 Trw Automotive Gmbh Actuating drive for device for raising of engine bonnet of motor vehicle has control unit which automatically triggers return movement of actuating component back into initial position
    EP1835199A3 (en) * 2006-03-14 2007-11-07 Muhr und Bender KG Spring leg pipe made of flexibly rolled sheet metal
    DE102011051057A1 (en) 2011-06-14 2012-09-06 Muhr Und Bender Kg Method for manufacturing tube for exhaust systems of motor vehicles, involves generating regions of higher thickness and other regions of lower thickness in longitudinal direction of strip material
    CN111015082A (en) * 2019-11-06 2020-04-17 武汉钢铁江北集团冷弯型钢有限公司 Production method of cold-bending rectangular steel pipe with high surface quality

    Also Published As

    Publication number Publication date
    ATE369216T1 (en) 2007-08-15
    EP1479458A3 (en) 2004-12-01
    US7107682B2 (en) 2006-09-19
    JP2004344979A (en) 2004-12-09
    EP1479458B1 (en) 2007-08-08
    US20050015959A1 (en) 2005-01-27
    ES2291772T3 (en) 2008-03-01
    DE10323694A1 (en) 2005-01-27
    DE502004004551D1 (en) 2007-09-20
    JP4173118B2 (en) 2008-10-29

    Similar Documents

    Publication Publication Date Title
    DE3220029C2 (en)
    DE2813636C3 (en) Process and device for the production of profiles made of metal, primarily steel profiles
    EP2119514B1 (en) Method for straightening a metal strip
    EP1479458A2 (en) Method for manufacturing tubes and profiles
    DE102011057060B4 (en) Profile rolling process for the production of a closed hollow profile made of sheet metal and subsequently produced and shaped beam
    DE2813635C2 (en) Method and device for the production of profiles, hollow bodies and the like from several metal strips of constant thickness
    DE1452122B1 (en) Method for producing, for example, U, angle, channel, pipe or similar shapes having, high-strength, low-stretch sheet metal profiles and device for performing the method
    DE3733058C2 (en)
    DE2613386A1 (en) Spiral-walled plastics pipe of selected wall profile - prepd. simply to a specific dia.
    DE2740582A1 (en) METHOD AND DEVICE FOR PROFILING A STRAP MADE OF ELASTOPLASTIC OR PLASTIC MATERIAL
    DE104875C (en)
    EP0849027B1 (en) Method for manufacturing profiled strips and sheets
    WO1981000222A1 (en) Method for bending sheets and device for implementing the method
    DE2228496C2 (en) Process for corrugating a thin, flat sheet
    DE102009056324A1 (en) Method for lengthwise formation of metal strip or initial profile for producing metal profile in form of e.g. pipe, involves broadening recess with other recesses in roll forming tool, to generate forming region along elastic line
    DE102004039599B3 (en) Process to produce sheet metal of varying thickness for subsequent use as pipe rolling material or profiled components
    DE2438595A1 (en) Apertured strip rolling system - uses sequential roll pairs to provide stamped or coated strip with intermediate heat treatment
    EP2875877B1 (en) Method for producing a profile having varying a cross-section
    DE2359308A1 (en) METHOD OF MAKING A METAL STRIP WITH A LONGITUDINAL CHANNEL
    EP2959985B1 (en) Profiled beam with increased flexural strength made of cold strip and method for producing same
    DE3127199C1 (en) Method of making a pipe bend
    EP3515629B1 (en) Method and device for expanding a metal element
    DE102009007701B4 (en) Method for producing a closed profile from a flat strip of material by roll forming
    DE102016112481A1 (en) Method for forming a deformable material strip
    DE2406710A1 (en) PROCESS FOR MANUFACTURING PIPES WITH POLYGONAL CROSS-SECTION AND DEVICE FOR CARRYING OUT THE PROCESS

    Legal Events

    Date Code Title Description
    PUAI Public reference made under article 153(3) epc to a published international application that has entered the european phase

    Free format text: ORIGINAL CODE: 0009012

    PUAL Search report despatched

    Free format text: ORIGINAL CODE: 0009013

    AK Designated contracting states

    Kind code of ref document: A2

    Designated state(s): AT BE BG CH CY CZ DE DK EE ES FI FR GB GR HU IE IT LI LU MC NL PL PT RO SE SI SK TR

    AX Request for extension of the european patent

    Extension state: AL HR LT LV MK

    AK Designated contracting states

    Kind code of ref document: A3

    Designated state(s): AT BE BG CH CY CZ DE DK EE ES FI FR GB GR HU IE IT LI LU MC NL PL PT RO SE SI SK TR

    AX Request for extension of the european patent

    Extension state: AL HR LT LV MK

    17P Request for examination filed

    Effective date: 20050406

    AKX Designation fees paid

    Designated state(s): AT BE BG CH CY CZ DE DK EE ES FI FR GB GR HU IE IT LI LU MC NL PL PT RO SE SI SK TR

    17Q First examination report despatched

    Effective date: 20061107

    GRAP Despatch of communication of intention to grant a patent

    Free format text: ORIGINAL CODE: EPIDOSNIGR1

    GRAS Grant fee paid

    Free format text: ORIGINAL CODE: EPIDOSNIGR3

    GRAA (expected) grant

    Free format text: ORIGINAL CODE: 0009210

    AK Designated contracting states

    Kind code of ref document: B1

    Designated state(s): AT BE BG CH CY CZ DE DK EE ES FI FR GB GR HU IE IT LI LU MC NL PL PT RO SE SI SK TR

    REG Reference to a national code

    Ref country code: GB

    Ref legal event code: FG4D

    Free format text: NOT ENGLISH

    REG Reference to a national code

    Ref country code: CH

    Ref legal event code: EP

    REG Reference to a national code

    Ref country code: IE

    Ref legal event code: FG4D

    Free format text: LANGUAGE OF EP DOCUMENT: GERMAN

    REF Corresponds to:

    Ref document number: 502004004551

    Country of ref document: DE

    Date of ref document: 20070920

    Kind code of ref document: P

    RIN2 Information on inventor provided after grant (corrected)

    Inventor name: HAUGER, ANDREAS, DR.-ING.

    REG Reference to a national code

    Ref country code: CH

    Ref legal event code: NV

    Representative=s name: PA ALDO ROEMPLER

    REG Reference to a national code

    Ref country code: SE

    Ref legal event code: TRGR

    GBT Gb: translation of ep patent filed (gb section 77(6)(a)/1977)

    Effective date: 20071107

    ET Fr: translation filed
    PG25 Lapsed in a contracting state [announced via postgrant information from national office to epo]

    Ref country code: FI

    Free format text: LAPSE BECAUSE OF FAILURE TO SUBMIT A TRANSLATION OF THE DESCRIPTION OR TO PAY THE FEE WITHIN THE PRESCRIBED TIME-LIMIT

    Effective date: 20070808

    Ref country code: BG

    Free format text: LAPSE BECAUSE OF FAILURE TO SUBMIT A TRANSLATION OF THE DESCRIPTION OR TO PAY THE FEE WITHIN THE PRESCRIBED TIME-LIMIT

    Effective date: 20071108

    PG25 Lapsed in a contracting state [announced via postgrant information from national office to epo]

    Ref country code: PL

    Free format text: LAPSE BECAUSE OF FAILURE TO SUBMIT A TRANSLATION OF THE DESCRIPTION OR TO PAY THE FEE WITHIN THE PRESCRIBED TIME-LIMIT

    Effective date: 20070808

    REG Reference to a national code

    Ref country code: ES

    Ref legal event code: FG2A

    Ref document number: 2291772

    Country of ref document: ES

    Kind code of ref document: T3

    REG Reference to a national code

    Ref country code: IE

    Ref legal event code: FD4D

    PG25 Lapsed in a contracting state [announced via postgrant information from national office to epo]

    Ref country code: GR

    Free format text: LAPSE BECAUSE OF FAILURE TO SUBMIT A TRANSLATION OF THE DESCRIPTION OR TO PAY THE FEE WITHIN THE PRESCRIBED TIME-LIMIT

    Effective date: 20071109

    Ref country code: DK

    Free format text: LAPSE BECAUSE OF FAILURE TO SUBMIT A TRANSLATION OF THE DESCRIPTION OR TO PAY THE FEE WITHIN THE PRESCRIBED TIME-LIMIT

    Effective date: 20070808

    PLBI Opposition filed

    Free format text: ORIGINAL CODE: 0009260

    PG25 Lapsed in a contracting state [announced via postgrant information from national office to epo]

    Ref country code: IE

    Free format text: LAPSE BECAUSE OF FAILURE TO SUBMIT A TRANSLATION OF THE DESCRIPTION OR TO PAY THE FEE WITHIN THE PRESCRIBED TIME-LIMIT

    Effective date: 20070808

    Ref country code: SK

    Free format text: LAPSE BECAUSE OF FAILURE TO SUBMIT A TRANSLATION OF THE DESCRIPTION OR TO PAY THE FEE WITHIN THE PRESCRIBED TIME-LIMIT

    Effective date: 20070808

    Ref country code: CZ

    Free format text: LAPSE BECAUSE OF FAILURE TO SUBMIT A TRANSLATION OF THE DESCRIPTION OR TO PAY THE FEE WITHIN THE PRESCRIBED TIME-LIMIT

    Effective date: 20070808

    Ref country code: PT

    Free format text: LAPSE BECAUSE OF FAILURE TO SUBMIT A TRANSLATION OF THE DESCRIPTION OR TO PAY THE FEE WITHIN THE PRESCRIBED TIME-LIMIT

    Effective date: 20080108

    PLAX Notice of opposition and request to file observation + time limit sent

    Free format text: ORIGINAL CODE: EPIDOSNOBS2

    26 Opposition filed

    Opponent name: BENTELER AUTOMOBILTECHNIK GMBH

    Effective date: 20080507

    PG25 Lapsed in a contracting state [announced via postgrant information from national office to epo]

    Ref country code: RO

    Free format text: LAPSE BECAUSE OF FAILURE TO SUBMIT A TRANSLATION OF THE DESCRIPTION OR TO PAY THE FEE WITHIN THE PRESCRIBED TIME-LIMIT

    Effective date: 20070808

    NLR1 Nl: opposition has been filed with the epo

    Opponent name: BENTELER AUTOMOBILTECHNIK GMBH

    PLBP Opposition withdrawn

    Free format text: ORIGINAL CODE: 0009264

    PLBB Reply of patent proprietor to notice(s) of opposition received

    Free format text: ORIGINAL CODE: EPIDOSNOBS3

    PLBD Termination of opposition procedure: decision despatched

    Free format text: ORIGINAL CODE: EPIDOSNOPC1

    REG Reference to a national code

    Ref country code: CH

    Ref legal event code: PCAR

    Free format text: ALDO ROEMPLER PATENTANWALT;BRENDENWEG 11 POSTFACH 154;9424 RHEINECK (CH)

    PG25 Lapsed in a contracting state [announced via postgrant information from national office to epo]

    Ref country code: MC

    Free format text: LAPSE BECAUSE OF NON-PAYMENT OF DUE FEES

    Effective date: 20080531

    REG Reference to a national code

    Ref country code: CH

    Ref legal event code: PL

    PLBM Termination of opposition procedure: date of legal effect published

    Free format text: ORIGINAL CODE: 0009276

    STAA Information on the status of an ep patent application or granted ep patent

    Free format text: STATUS: OPPOSITION PROCEDURE CLOSED

    GBPC Gb: european patent ceased through non-payment of renewal fee

    Effective date: 20080524

    PG25 Lapsed in a contracting state [announced via postgrant information from national office to epo]

    Ref country code: CH

    Free format text: LAPSE BECAUSE OF NON-PAYMENT OF DUE FEES

    Effective date: 20080531

    Ref country code: LI

    Free format text: LAPSE BECAUSE OF NON-PAYMENT OF DUE FEES

    Effective date: 20080531

    27C Opposition proceedings terminated

    Effective date: 20080927

    NLR2 Nl: decision of opposition

    Effective date: 20080927

    PG25 Lapsed in a contracting state [announced via postgrant information from national office to epo]

    Ref country code: EE

    Free format text: LAPSE BECAUSE OF FAILURE TO SUBMIT A TRANSLATION OF THE DESCRIPTION OR TO PAY THE FEE WITHIN THE PRESCRIBED TIME-LIMIT

    Effective date: 20070808

    PG25 Lapsed in a contracting state [announced via postgrant information from national office to epo]

    Ref country code: SI

    Free format text: LAPSE BECAUSE OF FAILURE TO SUBMIT A TRANSLATION OF THE DESCRIPTION OR TO PAY THE FEE WITHIN THE PRESCRIBED TIME-LIMIT

    Effective date: 20070808

    Ref country code: GB

    Free format text: LAPSE BECAUSE OF NON-PAYMENT OF DUE FEES

    Effective date: 20080524

    PG25 Lapsed in a contracting state [announced via postgrant information from national office to epo]

    Ref country code: CY

    Free format text: LAPSE BECAUSE OF FAILURE TO SUBMIT A TRANSLATION OF THE DESCRIPTION OR TO PAY THE FEE WITHIN THE PRESCRIBED TIME-LIMIT

    Effective date: 20070808

    PGFP Annual fee paid to national office [announced via postgrant information from national office to epo]

    Ref country code: NL

    Payment date: 20090424

    Year of fee payment: 6

    PG25 Lapsed in a contracting state [announced via postgrant information from national office to epo]

    Ref country code: IT

    Free format text: LAPSE BECAUSE OF NON-PAYMENT OF DUE FEES

    Effective date: 20080524

    PGFP Annual fee paid to national office [announced via postgrant information from national office to epo]

    Ref country code: BE

    Payment date: 20090423

    Year of fee payment: 6

    PG25 Lapsed in a contracting state [announced via postgrant information from national office to epo]

    Ref country code: HU

    Free format text: LAPSE BECAUSE OF FAILURE TO SUBMIT A TRANSLATION OF THE DESCRIPTION OR TO PAY THE FEE WITHIN THE PRESCRIBED TIME-LIMIT

    Effective date: 20080209

    Ref country code: SE

    Free format text: LAPSE BECAUSE OF NON-PAYMENT OF DUE FEES

    Effective date: 20080525

    Ref country code: LU

    Free format text: LAPSE BECAUSE OF NON-PAYMENT OF DUE FEES

    Effective date: 20080524

    PG25 Lapsed in a contracting state [announced via postgrant information from national office to epo]

    Ref country code: TR

    Free format text: LAPSE BECAUSE OF FAILURE TO SUBMIT A TRANSLATION OF THE DESCRIPTION OR TO PAY THE FEE WITHIN THE PRESCRIBED TIME-LIMIT

    Effective date: 20070808

    BERE Be: lapsed

    Owner name: MUHR UND BENDER K.G.

    Effective date: 20100531

    REG Reference to a national code

    Ref country code: NL

    Ref legal event code: V1

    Effective date: 20101201

    PG25 Lapsed in a contracting state [announced via postgrant information from national office to epo]

    Ref country code: BE

    Free format text: LAPSE BECAUSE OF NON-PAYMENT OF DUE FEES

    Effective date: 20100531

    Ref country code: NL

    Free format text: LAPSE BECAUSE OF NON-PAYMENT OF DUE FEES

    Effective date: 20101201

    REG Reference to a national code

    Ref country code: FR

    Ref legal event code: PLFP

    Year of fee payment: 13

    REG Reference to a national code

    Ref country code: FR

    Ref legal event code: PLFP

    Year of fee payment: 14

    REG Reference to a national code

    Ref country code: FR

    Ref legal event code: PLFP

    Year of fee payment: 15

    PGFP Annual fee paid to national office [announced via postgrant information from national office to epo]

    Ref country code: ES

    Payment date: 20190605

    Year of fee payment: 16

    PGFP Annual fee paid to national office [announced via postgrant information from national office to epo]

    Ref country code: FR

    Payment date: 20190425

    Year of fee payment: 16

    PGFP Annual fee paid to national office [announced via postgrant information from national office to epo]

    Ref country code: AT

    Payment date: 20190529

    Year of fee payment: 16

    REG Reference to a national code

    Ref country code: AT

    Ref legal event code: MM01

    Ref document number: 369216

    Country of ref document: AT

    Kind code of ref document: T

    Effective date: 20200524

    PG25 Lapsed in a contracting state [announced via postgrant information from national office to epo]

    Ref country code: AT

    Free format text: LAPSE BECAUSE OF NON-PAYMENT OF DUE FEES

    Effective date: 20200524

    PG25 Lapsed in a contracting state [announced via postgrant information from national office to epo]

    Ref country code: FR

    Free format text: LAPSE BECAUSE OF NON-PAYMENT OF DUE FEES

    Effective date: 20200531

    REG Reference to a national code

    Ref country code: ES

    Ref legal event code: FD2A

    Effective date: 20211004

    PG25 Lapsed in a contracting state [announced via postgrant information from national office to epo]

    Ref country code: ES

    Free format text: LAPSE BECAUSE OF NON-PAYMENT OF DUE FEES

    Effective date: 20200525

    PGFP Annual fee paid to national office [announced via postgrant information from national office to epo]

    Ref country code: DE

    Payment date: 20230505

    Year of fee payment: 20

    REG Reference to a national code

    Ref country code: DE

    Ref legal event code: R071

    Ref document number: 502004004551

    Country of ref document: DE