Global Patent Index - EP 1796859 B1

EP 1796859 B1 20090121 - METHOD AND DEVICE FOR PRODUCTION OF A LONGITUDINAL SEAM WELDED HOLLOW PROFILE

Title (en)

METHOD AND DEVICE FOR PRODUCTION OF A LONGITUDINAL SEAM WELDED HOLLOW PROFILE

Title (de)

VERFAHREN UND VORRICHTUNG ZUR HERSTELLUNG EINES LÄNGSNAHTGESCHWEISSTEN HOHLPROFILS

Title (fr)

PROCEDE ET DISPOSITIF POUR PRODUIRE UN PROFILE CREUX A SOUDURE LONGITUDINALE

Publication

EP 1796859 B1 20090121 (DE)

Application

EP 05778094 A 20050908

Priority

  • EP 2005009632 W 20050908
  • DE 102004046687 A 20040924

Abstract (en)

[origin: WO2006034773A1] The invention relates to a method and a device for production of a longitudinal seam welded hollow profile (R) from a section of sheet metal (B), comprising defined longitudinal edges (B1,B2), whereby the section of sheet metal (B) is firstly pre-formed to give a slotted profile (Sr), by means of at least two tool pieces (2,3), each comprising a recess (4,5) which determine the external form of at least a section of the hollow profile (R) for production and then the facing longitudinal edges (B1,B2) of the section of sheet metal (B) in the region of the slotted profile (Sr) are welded together. Said method and device permit the economical production of exactly formed hollow profiles in a simple manner. The above is achieved, whereby, in order to generate the slotted profile (Sr), the section of sheet metal (B) is freely laid around a mandrel (8), positioned between the tool pieces (2,3), running in the longitudinal direction of the section of sheet metal (B), the outer form of which corresponds to the inner form of the hollow body (R) for production, by means of a change in the relative position of the tool pieces (2,3) and the thus obtained slotted profile (Sr) is pre-formed in a single or multiple steps by yet another change in the relative position of the tool pieces (2,3).

IPC 8 full level

B21D 5/10 (2006.01)

CPC (source: EP)

B21C 37/0815 (2013.01)

Designated contracting state (EPC)

AT BE BG CH CY CZ DE DK EE ES FI FR GB GR HU IE IS IT LI LT LU LV MC NL PL PT RO SE SI SK TR

DOCDB simple family (publication)

WO 2006034773 A1 20060406; AT 421391 T 20090215; CN 101065197 A 20071031; CN 101065197 B 20101222; DE 102004046687 B3 20060601; DE 502005006547 D1 20090312; EP 1796859 A1 20070620; EP 1796859 B1 20090121; JP 2008514429 A 20080508; KR 20070051371 A 20070517; US 2009114703 A1 20090507; US 7909226 B2 20110322

DOCDB simple family (application)

EP 2005009632 W 20050908; AT 05778094 T 20050908; CN 200580032110 A 20050908; DE 102004046687 A 20040924; DE 502005006547 T 20050908; EP 05778094 A 20050908; JP 2007532793 A 20050908; KR 20077009333 A 20070424; US 66389805 A 20050908