EP 2285508 B1 20110817 - PRODUCTION-OPTIMIZED METHOD FOR PRODUCING A MULTILAYERED TUBE
Title (en)
PRODUCTION-OPTIMIZED METHOD FOR PRODUCING A MULTILAYERED TUBE
Title (de)
PRODUKTIONSOPTIMIERTES VERFAHREN ZUR HERSTELLUNG EINES MEHRLAGENROHRES
Title (fr)
PROCÉDÉ OPTIMISÉ DE PRODUCTION POUR LA FABRICATION D'UN TUBE MULTICOUCHE
Publication
Application
Priority
EP 2009004467 W 20090619
Abstract (en)
[origin: WO2010145680A1] Method for producing a multilayered tube (5) with the aid of a sheet-metal forming machine, in which individual layers of material (1, 2) that are to be combined to form the multilayered tube (5) are laid one on top of the other, wherein at least one of the layers of material (1) consists of more than one laid element (1a, 1b), after that a first connection (3a, 3b) respectively between the peripheral elements of the lying layer of material (1a, 1b) and the neighbouring layer of material (2) is created, the multilayered material produced in this way is formed into the tube (5) and, as it is being formed, the still freely mutually displaceable edges (4a, 4b) of the elements (1a, 1b) of the lying layer of material (1a, 1b) move freely towards each other as the forming operation progresses, on account of the different circumferential lengths of the inner tube (1a, 1b) and the outer tube (2), then, after the forming process has progressed to a certain point, these edges (4a, 4b) of the elements (1a, 1b) of the lying layer of material (1a, 1b) that are moving towards each other come together, and then the multilayered tube (5) is brought into its final form by means of the sheet-metal forming machine, wherein, during this final forming, the edges (4a, 4b) of the elements (1a, 1b) of the lying layer of material (1a, 1b) can then no longer move freely towards each other, as a result of which the respective layer of material (1a, 1b) acting as the inner tube is pressed with force-fitting engagement into the respective layer of material (2) acting as the outer tube.
IPC 8 full level
B21C 37/08 (2006.01); B21C 37/09 (2006.01)
CPC (source: EP US)
B21C 37/08 (2013.01 - EP US); B21C 37/09 (2013.01 - EP US); B21C 37/154 (2013.01 - EP US); B21D 5/015 (2013.01 - EP US); B21D 5/12 (2013.01 - EP US)
Designated contracting state (EPC)
AT BE BG CH CY CZ DE DK EE ES FI FR GB GR HR HU IE IS IT LI LT LU LV MC MK MT NL NO PL PT RO SE SI SK TR
DOCDB simple family (publication)
WO 2010145680 A1 20101223; AT E520479 T1 20110915; AU 2009318922 A1 20110113; AU 2009318922 B2 20111208; BR PI0906446 A2 20150714; CA 2706347 A1 20100908; CA 2706347 C 20120124; CN 101983109 A 20110302; EP 2285508 A1 20110223; EP 2285508 B1 20110817; JP 2012529993 A 20121129; KR 101205676 B1 20121127; KR 20110033977 A 20110404; US 2011146366 A1 20110623
DOCDB simple family (application)
EP 2009004467 W 20090619; AT 09776794 T 20090619; AU 2009318922 A 20090619; BR PI0906446 A 20090619; CA 2706347 A 20090619; CN 200980105596 A 20090619; EP 09776794 A 20090619; JP 2012515359 A 20090619; KR 20107017116 A 20090619; US 81054209 A 20090619