Global Patent Index - EP 1320439 A2

EP 1320439 A2 2003-06-25 - METHOD FOR REAL TIME DYNAMIC DIAGNOSIS AND DECISION ASSISTANCE, FOR AN ELECTRIC DIRECT SPARK BUTT ELECTRIC WELDER AND ITS WELD SEAMS

Title (en)

METHOD FOR REAL TIME DYNAMIC DIAGNOSIS AND DECISION ASSISTANCE, FOR AN ELECTRIC DIRECT SPARK BUTT ELECTRIC WELDER AND ITS WELD SEAMS

Title (de)

VERFAHREN ZUR DIAGNOSTIK UND RESTZEITENTSCHEIDUNGSUNTERSTÜTZUNG FÜR EINE ABBRENNSTUMPFSCHWEISSMASCHINE UND IHRE SCHWEISSNÄHTE

Title (fr)

PROCEDE DE DIAGNOSTIC DYNAMIQUE ET D'AIDE A LA DECISION EN TEMPS REEL POUR UNE SOUDEUSE ELECTRIQUE EN BOUT PAR ETINCELAGE DIRECT ET SES SOUDURES

Publication

EP 1320439 A2 (FR)

Application

EP 01971530 A

Priority

  • EP 01971530 A
  • BE 0100166 W
  • EP 00870217 A

Abstract (en)

[origin: EP1193020A1] A method for the acquisition of data for an electric welder and the welds obtained comprises:- measuring the instantaneous alternating voltage at the primary (19) and secondary (16) terminals of the welding transformer and between the jaws (18) of the welding jaws; measuring the instantaneous current in the primary (24) and secondary (17) of the transformer; measuring the instantaneous displacement of the mobile jaw (4); memorising these values during the welding operation; calculating the energy provided by the primary and secondary to the jaws (5,6) as a function of time; calculating the energy provided by the secondary to the jaws and the calorific energy dissipated by the sparking as a function of the displacement of the mobile jaws; calculating the energy yields and on the basis of these measurements and calculations, establishing automatically a dynamic diagnosis in real time, with or without interactive intervention by an operator, for the quality of the weld being produced. Independent claims are included for the following: (a) a device for putting this method into service; (b) a direct flash electric welding machine; (c) and utilisation of such a welding machine for butt welding steel strip in a continuous process.

IPC 1-7 (main, further and additional classification)

B23K 11/04; B23K 11/25

IPC 8 full level (invention and additional information)

B23K 11/04 (2006.01); B23K 11/24 (2006.01); B23K 11/25 (2006.01)

CPC (invention and additional information)

B23K 11/258 (2013.01); B23K 11/043 (2013.01)

Citation (search report)

See references of WO 0226436A3

Designated contracting state (EPC)

AT BE CH CY DE DK ES FI FR GB GR IE IT LI LU MC NL PT SE TR

EPO simple patent family

EP 1193020 A1 20020403; AU 9152801 A 20020408; BR 0114500 A 20031014; CA 2420500 A1 20020404; CN 1462218 A 20031217; EP 1320439 A2 20030625; JP 2004508945 A 20040325; US 2004094516 A1 20040520; WO 0226436 A2 20020404; WO 0226436 A3 20021212

INPADOC legal status


2005-11-30 [18D] DEEMED TO BE WITHDRAWN

- Effective date: 20050330

2005-01-05 [17Q] FIRST EXAMINATION REPORT

- Effective date: 20041119

2003-06-25 [17P] REQUEST FOR EXAMINATION FILED

- Effective date: 20030127

2003-06-25 [AK] DESIGNATED CONTRACTING STATES:

- Designated State(s): AT BE CH CY DE DK ES FI FR GB GR IE IT LI LU MC NL PT SE TR

2003-06-25 [AX] REQUEST FOR EXTENSION OF THE EUROPEAN PATENT TO

- Countries: AL LT LV MK RO SI