-
公开(公告)号：DE59203931D1
公开(公告)日：1995-11-16
申请号：DE59203931
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: In a resistance welding process, a primary a.c. voltage is produced by a static frequency converter (14) with an intermediate DC circuit (14c) and chopper (14b) and is supplied to a welding transformer (16). A controller (18) is connected to the chopper. For control of welding current by modulation of the pulse duration of the primary a.c. voltage. A memory stores the set-point welding current value for comparison with the actual value in each chopper interval. ADVANTAGE - Reduced control intervals; adaptable to materials to be welded.
-
公开(公告)号：AU1134992A
公开(公告)日：1992-09-10
申请号：AU1134992
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: 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.
-
公开(公告)号：HU9200723D0
公开(公告)日：1992-05-28
申请号：HU9200723
申请日：1992-03-04
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.
-
公开(公告)号：NO880539L
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
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：CH682889A5
公开(公告)日：1993-12-15
申请号：CH67691
申请日：1991-03-06
Applicant: ELPATRONIC AG
Inventor： SUTTER WERNER
IPC: B23K11/24 , B23K11/25 , G05F1/08 , H02M7/5387
-
Patent Agency Ranking
公开(公告)号：BR9200767A
公开(公告)日：1992-11-17
申请号：BR9200767
申请日：1992-03-06
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.
-
公开(公告)号：HUT60445A
公开(公告)日：1992-09-28
申请号：HU9200723
申请日：1992-03-04
Applicant: ELPATRONIC AG
Inventor： SCHUERMANN HUBERT , SUTTER WERNER , WEBER MARKUS
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.
-
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
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：DK60288A
公开(公告)日：1988-08-10
申请号：DK60288
申请日：1988-02-05
Applicant: ELPATRONIC AG
Inventor： FREI MATTHIAS , MUEELLER WILLI , SUTTER WERNER
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：DK60288D0
公开(公告)日：1988-02-05
申请号：DK60288
申请日：1988-02-05
Applicant: ELPATRONIC AG
Inventor： FREI MATTHIAS , MUEELLER WILLI , SUTTER WERNER
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.
-
-
-
-
-
-
-
-
-
Search Results
24
records
(took 0.018 seconds)
