公开(公告)号：CA1311014C

公开(公告)日：1992-12-01

申请号：CA600490

申请日：1989-05-24

Applicant: ELPATRONIC AG

Inventor： MUELLER WILLI

IPC: B23K11/24 ,  B23K11/06 ,  B23K11/25 ,  B23K11/30 ,  G01R19/10

Abstract: A circuit for measuring the effective voltage drop at the welding position between the welding electrodes of a resistance seam welding machine. A first measuring loop for measuring a first loop voltage is secured to the lower welding arm close to the lower welding electrode and is in communication with the upper welding electrode through a sliding contact. The second measuring loop is taken close to the welding electrodes through the head portion of the Zrail. The conductor turns of both measuring loops, which lead to an evaluation circuit are twisted together. Thus the stray effects picked up in the two measuring loops are the same. The difference between the two loop voltages formed in the evaluation circuit is the effective voltage drop which is further processed in the usual manner to monitor the quality of the welding seam produced.

公开(公告)号：FI892841A0

公开(公告)日：1989-06-09

申请号：FI892841

申请日：1989-06-09

Applicant: ELPATRONIC AG

Inventor： MUELLER WILLI

IPC: B23K11/24 ,  B23K11/06 ,  B23K11/25 ,  B23K11/30 ,  G01R19/10 ,  B23K

Abstract: A circuit for measuring the rms voltage drop across the weld (30) between the welding electrodes (14, 16) of a resistance seam welding machine is described. A first measuring loop (40) for measuring a first loop voltage is mounted at the lower welding arm (28) close to the lower welding electrode (16) and is connected to the upper welding electrode (14) through a loop contact (44). The second measuring loop (60) is carried close to the welding electrodes (14, 16) via the head part of the Z rail (12). The conductor turns (42, 62) of the two measuring loops, which lead to an evaluating circuit (48), are twisted together. Thus, the stray interference is the same in both measuring loops. The difference between the two loop voltages formed in the evaluating circuit (48) is the rms voltage drop which is processed further in conventional manner for monitoring the quality of the welding seam produced. … …

公开(公告)号：FI880550A

公开(公告)日：1988-08-10

申请号：FI880550

申请日：1988-02-08

Applicant: ELPATRONIC AG

Inventor： FREI MATTHIAS ,  MUELLER WILLI ,  SUTTER WERNER

IPC: B23K11/06 ,  B23K11/24 ,  B23K

Abstract: A resistance seam welding machine is described, particularly for the longitudinal seam welding of can bodies, wherein, in the secondary loop (16), feed and return lines are constructed partially as a double line (18, 28) and in all the remaining portion (18a, 18b, 18c, 20, 24, 26) in the form of a substantially coaxial line. The voltage loss occurring in the secondary loop (16) between welding transformer (14) and welding position (8, 10) and the heat due to energy losses in the machine parts adjacent to the secondary loop are considerably reduced as a result of this construction of the feed return lines.

公开(公告)号：GR3000482T3

公开(公告)日：1991-06-28

申请号：GR900400257

申请日：1990-05-11

Applicant: ELPATRONIC AG

Inventor： FREI MATTHIAS ,  MUELLER WILLI ,  SUTTER WERNER

IPC: B23K11/06 ,  B23K11/24

Abstract: A resistance seam welding machine is described, particularly for the longitudinal seam welding of can bodies, wherein, in the secondary loop (16), feed and return lines are constructed partially as a double line (18, 28) and in all the remaining portion (18a, 18b, 18c, 20, 24, 26) in the form of a substantially coaxial line. The voltage loss occurring in the secondary loop (16) between welding transformer (14) and welding position (8, 10) and the heat due to energy losses in the machine parts adjacent to the secondary loop are considerably reduced as a result of this construction of the feed return lines.

公开(公告)号：AU608199B2

公开(公告)日：1991-03-21

申请号：AU3506089

申请日：1989-05-23

Applicant: ELPATRONIC AG

Inventor： MUELLER WILLI

IPC: B23K11/24 ,  B23K11/06 ,  B23K11/25 ,  B23K11/30 ,  G01R19/10 ,  G01R19/00

Abstract: A circuit for measuring the rms voltage drop across the weld (30) between the welding electrodes (14, 16) of a resistance seam welding machine is described. A first measuring loop (40) for measuring a first loop voltage is mounted at the lower welding arm (28) close to the lower welding electrode (16) and is connected to the upper welding electrode (14) through a loop contact (44). The second measuring loop (60) is carried close to the welding electrodes (14, 16) via the head part of the Z rail (12). The conductor turns (42, 62) of the two measuring loops, which lead to an evaluating circuit (48), are twisted together. Thus, the stray interference is the same in both measuring loops. The difference between the two loop voltages formed in the evaluating circuit (48) is the rms voltage drop which is processed further in conventional manner for monitoring the quality of the welding seam produced. … …

公开(公告)号：CH675385A5

公开(公告)日：1990-09-28

申请号：CH224488

申请日：1988-06-10

Applicant: ELPATRONIC AG

Inventor： MUELLER WILLI

IPC: B23K11/24 ,  B23K11/06 ,  B23K11/25 ,  B23K11/30 ,  G01R19/10

公开(公告)号：DE3762321D1

公开(公告)日：1990-05-23

申请号：DE3762321

申请日：1987-12-17

Applicant: ELPATRONIC AG

Inventor： FREI MATTHIAS ,  MUELLER WILLI ,  SUTTER WERNER

IPC: B23K11/06 ,  B23K11/24

Abstract: A resistance seam welding machine is described, particularly for the longitudinal seam welding of can bodies, wherein, in the secondary loop (16), feed and return lines are constructed partially as a double line (18, 28) and in all the remaining portion (18a, 18b, 18c, 20, 24, 26) in the form of a substantially coaxial line. The voltage loss occurring in the secondary loop (16) between welding transformer (14) and welding position (8, 10) and the heat due to energy losses in the machine parts adjacent to the secondary loop are considerably reduced as a result of this construction of the feed return lines.

公开(公告)号：BR8902739A

公开(公告)日：1990-02-01

申请号：BR8902739

申请日：1989-06-09

Applicant: ELPATRONIC AG

Inventor： MUELLER WILLI

IPC: B23K11/24 ,  B23K11/06 ,  B23K11/25 ,  B23K11/30 ,  G01R19/10

Abstract: A circuit for measuring the rms voltage drop across the weld (30) between the welding electrodes (14, 16) of a resistance seam welding machine is described. A first measuring loop (40) for measuring a first loop voltage is mounted at the lower welding arm (28) close to the lower welding electrode (16) and is connected to the upper welding electrode (14) through a loop contact (44). The second measuring loop (60) is carried close to the welding electrodes (14, 16) via the head part of the Z rail (12). The conductor turns (42, 62) of the two measuring loops, which lead to an evaluating circuit (48), are twisted together. Thus, the stray interference is the same in both measuring loops. The difference between the two loop voltages formed in the evaluating circuit (48) is the rms voltage drop which is processed further in conventional manner for monitoring the quality of the welding seam produced. … …

公开(公告)号：AU3506089A

公开(公告)日：1989-12-14

申请号：AU3506089

申请日：1989-05-23

Applicant: ELPATRONIC AG

Inventor： MUELLER WILLI

IPC: B23K11/24 ,  B23K11/06 ,  B23K11/25 ,  B23K11/30 ,  G01R19/10 ,  G01R19/00

Abstract: A circuit for measuring the rms voltage drop across the weld (30) between the welding electrodes (14, 16) of a resistance seam welding machine is described. A first measuring loop (40) for measuring a first loop voltage is mounted at the lower welding arm (28) close to the lower welding electrode (16) and is connected to the upper welding electrode (14) through a loop contact (44). The second measuring loop (60) is carried close to the welding electrodes (14, 16) via the head part of the Z rail (12). The conductor turns (42, 62) of the two measuring loops, which lead to an evaluating circuit (48), are twisted together. Thus, the stray interference is the same in both measuring loops. The difference between the two loop voltages formed in the evaluating circuit (48) is the rms voltage drop which is processed further in conventional manner for monitoring the quality of the welding seam produced. … …

公开(公告)号：BR8800516A

公开(公告)日：1988-09-27

申请号：BR8800516

申请日：1988-02-09

Applicant: ELPATRONIC AG

Inventor： FREI MATTHIAS ,  MUELLER WILLI ,  SUTTER WERNER

IPC: B23K11/06 ,  B23K11/24 ,  B23K11/08 ,  B23K11/00

Abstract: A resistance seam welding machine is described, particularly for the longitudinal seam welding of can bodies, wherein, in the secondary loop (16), feed and return lines are constructed partially as a double line (18, 28) and in all the remaining portion (18a, 18b, 18c, 20, 24, 26) in the form of a substantially coaxial line. The voltage loss occurring in the secondary loop (16) between welding transformer (14) and welding position (8, 10) and the heat due to energy losses in the machine parts adjacent to the secondary loop are considerably reduced as a result of this construction of the feed return lines.