公开(公告)号：CH688649A5

公开(公告)日：1997-12-31

申请号：CH343591

申请日：1991-11-22

Applicant: ELPATRONIC AG

Inventor： SCHUERMANN HUBERT ,  SUTTER WERNER ,  WEBER MARKUS

IPC: B23K11/25 ,  H02M7/5387 ,  B23K11/24 ,  G05F1/02

公开(公告)号：CA2062081A1

公开(公告)日：1992-09-07

申请号：CA2062081

申请日：1992-02-28

Applicant: ELPATRONIC AG

Inventor： SCHUERMANN HUBERT ,  SUTTER WERNER ,  WEBER MARKUS

IPC: B23K11/24 ,  B23K11/25 ,  G05F1/08 ,  H02M7/5387

Abstract: PROCESS FOR RESISTANCE-WELDING AND ARRANGEMENT FOR CARRYING OUT THE PROCESS A process is described for resistance-welding with a welding current which pulsates in periodic halfwaves, in particular an alternating current, and which is generated from a primary alternating voltage (Up) of a welding transformer (16) and is regulated by pulse duration modulation thereof. The primary alternating voltage (Up) is chopped n times (n>1) in each half-wave during the pulse duration modulation. In each half-wave the welding current is regulated by performing n nominal-actual value comparisons of the current and by the pulse length modulation the duty ratio accordingly being influenced n times. In order to regulate the welding current, a regulator (18) is provided, having a store containing current nominal values for each chopping interval, corresponding to the welding current form, for comparing with each current actual value determined per chopping interval. In this way, not only can very short regulating times be obtained, because in each half-wave the welding current can be readjusted repeatedly, but the current form is freely selectable, because a large number of nominal values can be kept in readiness in the store for each halfwave of the current. For electric resistance-welding, in each halfwave of the welding current, a current course is selected which deviates from the sinusoidal form. AS a result, energy delivery to the material which is being welded can be accurately proportioned, which makes it possible to weld materials which have hitherto been problematical, such as very thin and or thinly tin-plated sheet metal, black plates, chromium-plated sheet metal etc, with very good welding quality and a high throughput. (Fig. 1)

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：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：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.

公开(公告)号：DE3710875A1

公开(公告)日：1988-08-18

申请号：DE3710875

申请日：1987-04-01

Applicant: ELPATRONIC AG

Inventor： MUELLER WILLI ,  FREI MATTHIAS ,  SUTTER WERNER

IPC: B23K11/06 ,  B23K11/24 ,  B65D8/04

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：NO880539A

公开(公告)日：1988-08-10

申请号：NO880539

申请日：1988-02-08

Applicant: ELPATRONIC AG

Inventor： FREI MATTHIAS ,  MUELLER WILLI ,  SUTTER WERNER

IPC: B23K11/06 ,  B23K11/24

CPC classification number: B23K11/063 ,  B23K11/24 ,  B23K2201/125

公开(公告)号：FI880550A0

公开(公告)日：1988-02-08

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：CH688650A5

公开(公告)日：1997-12-31

申请号：CH343691

申请日：1991-11-22

Applicant: ELPATRONIC AG

Inventor： SUTTER WERNER

IPC: B23K11/25 ,  H02M7/5387 ,  B23K11/24 ,  G05F1/02

公开(公告)号：AT128894T

公开(公告)日：1995-10-15

申请号：AT92103612

申请日：1992-03-03

Applicant: ELPATRONIC AG

Inventor： SCHUERMANN HUBERT ,  SUTTER WERNER ,  WEBER MARKUS

IPC: B23K11/24 ,  B23K11/25 ,  G05F1/08 ,  H02M7/5387

Abstract: A procedure is described for resistance welding with, in particular, an alternating welding current pulsating in periodic half waves which is generated from an alternating primary voltage (Up) of a welding transformer (16) and is regulated by pulse duration modulation of this alternating primary voltage. The alternating primary voltage (Up) is n-times chopped in each half wave during the pulse duration modulation, where n > 1. In each half wave, the welding current is regulated by the fact that n nominal/actual-value comparisons of the welding current are carried and the duty ratio during the pulse duration modulation is acted upon a corresponding n-times. To regulate the welding current, a regulator (18) is provided which has a memory which contains nominal current values corresponding to the welding current shape for each chopping interval for comparison with each actual current value determined per chopping interval. In this manner, it is not only possible to achieve very short regulating times because the welding current can be corrected several times within each of its halfwaves, but the welding current shape is also freely selectable because a large number of nominal values can be kept ready in the memory for each half wave of the welding current. For electrical resistance welding, a current variation which deviates from the sinusoidal shape is selected in each half wave of the welding current. As a result, energy output to the material to be welded can be accurately metered which makes it possible to weld previously problematic materials such as very thin and/or weakly tinned tin-plate or black-plate, chrome-plated sheet metal and so forth with very good welding quality and high throughput.