DE420085C - Arrangement for activating automatic disconnection devices for the primary current on electrical resistance welding machines - Google Patents
Arrangement for activating automatic disconnection devices for the primary current on electrical resistance welding machinesInfo
- Publication number
- DE420085C DE420085C DER60496D DER0060496D DE420085C DE 420085 C DE420085 C DE 420085C DE R60496 D DER60496 D DE R60496D DE R0060496 D DER0060496 D DE R0060496D DE 420085 C DE420085 C DE 420085C
- Authority
- DE
- Germany
- Prior art keywords
- arrangement
- electrical resistance
- machine
- primary current
- resistance welding
- Prior art date
- Legal status (The legal status is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the status listed.)
- Expired
Links
Classifications
-
- B—PERFORMING OPERATIONS; TRANSPORTING
- B23—MACHINE TOOLS; METAL-WORKING NOT OTHERWISE PROVIDED FOR
- B23K—SOLDERING OR UNSOLDERING; WELDING; CLADDING OR PLATING BY SOLDERING OR WELDING; CUTTING BY APPLYING HEAT LOCALLY, e.g. FLAME CUTTING; WORKING BY LASER BEAM
- B23K11/00—Resistance welding; Severing by resistance heating
- B23K11/24—Electric supply or control circuits therefor
- B23K11/25—Monitoring devices
- B23K11/251—Monitoring devices using analog means
Description
DEUTSCHES REICHGERMAN EMPIRE
AUSGEGEBEN AM
24.0KT0BER1925ISSUED ON
24.0KT0BER1925
REICHSPATENTAMTREICH PATENT OFFICE
PATENTSCHRIFTPATENT LETTERING
KLASSE 21h GRUPPE (R 60496VIIIj2Ih2) CLASS 21h GROUP (R 60496VIIIj 2 Ih 2 )
Hans Willi Roth in Düsseldorf.Hans Willi Roth in Düsseldorf.
Vorliegende Erfindung betrifft ein Verfahren zur Betätigung selbsttätiger Abschalt-Vorrichtungen des Priniärstromes an elektrischen Widerstandes chweißmas'dhinen, welches den Vorteil bietet, daß ohne unmittelbare Verwendung des Primär- oder Sekundärstromes der Maschine eine hohe Unabhängigkeit von den im Primärkreis auftretenden Stromstößen und trotzdem eine fast vollkommene Proportionalität des Schaltvorganges mit dem Verlauf der Schweißstromkurve erreicht wird. Das Verfahren bestellt erfindungsgemäß darin, daß die Betätigung bzw. Beeinflussung der Schaltorgane direkt oder indirekt durch einen Hilfsstromkreis erfolgt, der parallel zum Sekundärkreis der Maschine liegt und über die Schweißstelle geführt ist.The present invention relates to a method for actuating automatic shutdown devices of the primary current to electrical Resistance chweißmas'dhinen, which the The advantage is that there is no direct use of the primary or secondary current the machine is highly independent of the current surges occurring in the primary circuit and nevertheless an almost perfect proportionality of the switching process with the course of the welding current curve is achieved. According to the invention, the method orders that the actuation or influencing the switching elements takes place directly or indirectly through an auxiliary circuit that runs parallel to the Secondary circuit of the machine and is guided over the welding point.
Eine besonders hohe Unabhängigkeit von den im Primärkreis auftretenden Stromstößen wird erfindungsgemäß dadurch erzielt, daß der parallel zum Sekundärkreis der Maschine liegende Hilfsstromkreis die PrimärwicklungA particularly high level of independence from the current surges occurring in the primary circuit is achieved according to the invention that the parallel to the secondary circuit of the machine lying auxiliary circuit the primary winding
eines Hüfstransformators speist, dessen Sekundärwicklung ihrerseits die Betätigung bzw. Beeinflussung dei Schalterorgane vermittelt. In der Zeichnung ist eine nach dem Verfahren arbeitende beispielsweise Anordnung schematisch dargestellt. Auf dem Eisenkern ι der Schweißmaschine ist einerseits die Primärwicklung 2 angeordnet, die in bekannter Weise über geeignete Ausschaltvorrichtungenof a secondary transformer feeds its secondary winding in turn mediates the actuation or influencing of the switch organs. In the drawing is an example of an arrangement that works according to the method shown schematically. On the one hand, the primary winding is on the iron core ι of the welding machine 2 arranged in a known manner via suitable disconnection devices
ίο an das Netz angeschlossen ist. Die Sekundärwicklung 3 der Maschine ist an die Schweißarmatur angeschlossen und vermittelt die Übertragung der eigentlichen Schweißströme. Außerdem ist eine Hilfswicklung 4 auf dem Eisenkern der Maschine angebracht, die ihrerseits eine Wicklung 5 auf dem Eisenkern 6 des Hilfstransformators versorgt und über die Schweißstelle 7 geleitet ist. Eine zweite Wicklung 8 auf dem Hüfstransformator dientίο is connected to the mains. The secondary winding 3 of the machine is connected to the welding armature and provides the Transmission of the actual welding currents. In addition, an auxiliary winding 4 is on the Iron core attached to the machine, which in turn has a winding 5 on the iron core 6 of the auxiliary transformer is supplied and passed through the welding point 7. A second Winding 8 on the secondary transformer is used
ao zur Versorgung der Zeitschaltspule 9, in deren Inneren sich in sonst bekannter Weise ein jfleichfceitig als Luftzylinder ausgebildeter Eisenkern 10 bewegt. Die Dämpfung der Bewegung erfolgt einstellbar durch einen Kolbenao to supply the time switch coil 9, in the interior of which in an otherwise known manner one designed as an air cylinder Iron core 10 moves. The damping of the movement is adjustable by means of a piston
11. Am Ende seiner Aufwärtsbewegung betätigt der Eisenkern 10 in bekannter Weise einen Kontakthebel 12, der durch Vermittlung einer Ausschaltspule den Primärstromkreis der Schweißmaschine öffnet.11. Pressed at the end of its upward movement the iron core 10 in a known manner a contact lever 12, which by mediation an opening coil opens the primary circuit of the welding machine.
Ih besonderen Fällen, insbesondere wenn die Primäreinschaltstöße der Maschine nicht besonders stark sind, kann die Wicklung 4 unmittelbar über die Schweißstelle 7 an die Schaltspule 9 angeschlossen sein. Zur Schaltung kann an Stelle des geradlinig bewegten Eisenkernes .10 ebenso ein drehbarer Anker oder eine ähnlich wirkende Anordnung verwendet werden.Your special cases, especially when the primary switch-ons of the machine fail are particularly strong, the winding 4 can directly over the weld 7 to the Switching coil 9 be connected. To switch can be moved in place of the straight line Iron core .10 also uses a rotatable armature or a similarly acting arrangement will.
Da erfindungsgemäß der von der Spule 4 erzeugte Hilfsstrom parallel zum Schweißstrom über die Schweißstelle 7 geleitet wird, ist für die Stärke des Hilfsstromes in jedem Augenblick der Schweißung der Widerstand der Schweißstelle maßgebend, so daß tatsächlich die Stärke des Hilfsstromes proportional derjenigen des eigentlichen Schweißstromes verläuft und damit der Schaltvorgang indirekt von dem Verlauf der Schweißstromkurve abhängig gemacht ist, und zwar ohne Benutzung des Sekundärstromkreises der Maschine selbst. Das Verfahren wird somit auch für solche Maschinen anwendbar, bei welchen aus irgendwelchen Gründen, beispielsweise wegen besonderer Anordnung der Schweißarmatur, eine unmittelbare Benutzung des Sekundärstromkreises für die Erzeugung des Schaltstromes Schwierigkeiten macht.Since, according to the invention, the auxiliary current generated by the coil 4 is parallel to the welding current is passed over the welding point 7, is for the strength of the auxiliary current in each At the moment of welding the resistance of the welding point is decisive, so that actually the strength of the auxiliary current proportional to that of the actual welding current runs and thus the switching process is indirectly dependent on the course of the welding current curve without using the secondary circuit of the machine itself. The method can thus also be used for machines in which any Reasons, for example because of the special arrangement of the welding fitting, a direct use of the secondary circuit makes difficulties for the generation of the switching current.
Claims (2)
Priority Applications (1)
Application Number | Priority Date | Filing Date | Title |
---|---|---|---|
DER60496D DE420085C (en) | 1924-03-04 | 1924-03-04 | Arrangement for activating automatic disconnection devices for the primary current on electrical resistance welding machines |
Applications Claiming Priority (1)
Application Number | Priority Date | Filing Date | Title |
---|---|---|---|
DER60496D DE420085C (en) | 1924-03-04 | 1924-03-04 | Arrangement for activating automatic disconnection devices for the primary current on electrical resistance welding machines |
Publications (1)
Publication Number | Publication Date |
---|---|
DE420085C true DE420085C (en) | 1925-10-24 |
Family
ID=7411370
Family Applications (1)
Application Number | Title | Priority Date | Filing Date |
---|---|---|---|
DER60496D Expired DE420085C (en) | 1924-03-04 | 1924-03-04 | Arrangement for activating automatic disconnection devices for the primary current on electrical resistance welding machines |
Country Status (1)
Country | Link |
---|---|
DE (1) | DE420085C (en) |
-
1924
- 1924-03-04 DE DER60496D patent/DE420085C/en not_active Expired
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