DE413035C - Relay for automatically switching off the welding current of an electrical resistance welding machine after welding - Google Patents

Relay for automatically switching off the welding current of an electrical resistance welding machine after welding

Info

Publication number
DE413035C
DE413035C DED41067D DED0041067D DE413035C DE 413035 C DE413035 C DE 413035C DE D41067 D DED41067 D DE D41067D DE D0041067 D DED0041067 D DE D0041067D DE 413035 C DE413035 C DE 413035C
Authority
DE
Germany
Prior art keywords
welding
relay
current
electrical resistance
winding
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
Application number
DED41067D
Other languages
German (de)
Current Assignee (The listed assignees may be inaccurate. Google has not performed a legal analysis and makes no representation or warranty as to the accuracy of the list.)
SOAG SCHWEISSMASCHINENFABRIK A
Original Assignee
SOAG SCHWEISSMASCHINENFABRIK A
Priority date (The priority date 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 date listed.)
Filing date
Publication date
Application filed by SOAG SCHWEISSMASCHINENFABRIK A filed Critical SOAG SCHWEISSMASCHINENFABRIK A
Priority to DED41067D priority Critical patent/DE413035C/en
Application granted granted Critical
Publication of DE413035C publication Critical patent/DE413035C/en
Expired legal-status Critical Current

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

Landscapes

  • Engineering & Computer Science (AREA)
  • Mechanical Engineering (AREA)
  • Relay Circuits (AREA)

Description

(D 41067(D 41067

Die Erfindung betrifft eine Vorrichtung, welche dazu dienen soll, den Schweißstrom ι sofort nach Beendigung der Schweißung zu j unterbrechen, damit kein unnötiger Strom- | verbrauch entsteht und der Ausfall der | Schweißung möglichst unabhängig von der Geschicklichkeit des Arbeiters gemacht wird. Es sind bereits ähnliche Vorrichtungen bekannt geworden, die jedoch den NachteilThe invention relates to a device which is intended to serve the welding current ι Interrupt j immediately after the end of the weld, so that no unnecessary electricity | consumption and the failure of the | Welding as independently of the Skill of the worker is made. Similar devices are already known However, that has the disadvantage

to haben, daß insbesondere bei Anwendung sehr kurzer Schweißzeiten die betreffenden Stromstöße infolge ungleicher Lage des Einschaltpunktes gegenüber der Sinuskurve des Wechselstromes eine ungleichmäßige Schweißung ergeben. Bei der vorliegenden Ausführung ist dieser Nachteil vermieden, da die etwa primär auftretenden Stromstöße durch mehrfache magnetische Umsetzung nahezu ausgeglichen werden. Um dies zu erreichen, wird erfindungsgemäß das für die Ausschaltung verwendete, mit einer Strom- und einer Spannungswicklung versehene Relais so ausgebildet, daß die eine Wicklung aus einer Schleife der Sekundärwindung des Transfer-to have that the current surges in question, especially when using very short welding times as a result of the unequal position of the switch-on point in relation to the sinusoidal curve of the alternating current result in an uneven weld. In the present embodiment, this disadvantage is avoided because the approximately Primarily occurring current surges are almost compensated by multiple magnetic conversion will. In order to achieve this, according to the invention is used for switching off, with a current and a Voltage winding provided relay designed so that the one winding from a Loop of the secondary winding of the transfer

mators gebildet und die zweite Wicklung mit den Schweißelektroden verbunden ist, wobei beide Wicklungen entweder um einen gemeinsamen Eisenkern gelegt sind oder jede für sich einen besonderen Eisenkern besitzt.mators formed and the second winding is connected to the welding electrodes, wherein both windings are either placed around a common iron core or each for has a special iron core.

In der Zeichnung ist ein einfaches Ausführungsbeispiel dargestellt.In the drawing is a simple embodiment shown.

Die Sekundärwindung des Transformators t, an welcher die beiden Schweißelektroden α und b angeschlossen sind, ist in beliebiger Weise, z. B. mittels einer Schleife I, um einen Eisenkern m geführt. Um diesen Eisenkern m ist eine Wicklung II gelegt, deren beide Enden an den Schweißelektroden α und b angeschlossen sind, so daß der Eisenkern m, also von den beiden verschiedenen Wicklungen I und II, magnetisiert wird. Wie die Er-' fahrung lehrt, tritt bei Beendigung der Schweißung eine Änderung in dem Verhältnis der Magnetisierungskräfte der beiden Wicklungen I und II zueinander ein, so daß der Anker c, je nachdem die beiden Wicklungen I und II sich unterstützen oder gegenarbeiten, von dem Eisenkern m angezogen oder losgelassen wird. Diese Bewegung des Ankers c kann alsdann zur Ausschaltung des Schweißstromes in beliebiger Weise, z. B. mittels eines Ausschalters s, verwendet werden.The secondary winding of the transformer t, to which the two welding electrodes α and b are connected, can be used in any way, e.g. B. by means of a loop I to an iron core m out. A winding II is placed around this iron core m , both ends of which are connected to the welding electrodes α and b , so that the iron core m, that is to say from the two different windings I and II, is magnetized. As experience teaches, at the end of the weld there is a change in the ratio of the magnetizing forces of the two windings I and II to one another, so that the armature c, depending on whether the two windings I and II support or counteract one another, of the Iron core m is attracted or released. This movement of the armature c can then be used to switch off the welding current in any way, e.g. B. by means of a switch s, can be used.

Um das Relais einstellen zu können, kann in dem Stromkreis der Wicklung II ein Regulierwiderstand w eingefügt werden, oder es kann die Windungszahl der Wicklung II regulierbar eingerichtet werden.In order to be able to adjust the relay, a regulating resistor w can be inserted in the circuit of the winding II, or the number of turns of the winding II can be adjusted to be adjustable.

Statt eines einzelnen gemeinsamen. Eisenkerns m können selbstverständlich auch für jede der beiden Wicklungen I und II besondere Eisenkerne angeordnet werden, die gemeinsam die Öffnung des Schalters £ bewirken. Instead of a single common. Iron core m can of course also be arranged for each of the two windings I and II special iron cores which together cause the switch £ to open.

Claims (1)

Patent-Anspruch:Patent claim: Relais zur automatischen Ausschaltung des Schweißstromes einer elektrischen Widerstandsschweißmaschine nach erfolgter Schweißung mit einer Strom- und einer Spannungswicklung, dadurch gekennzeichnet, daß die eine Wicklung aus einer Schleife der Sekundärwindung des Transformators (t) gebildet und die zweite Wicklung mit den Schweißelektroden {a und b) verbunden ist, wobei beide Wicklungen entweder um einen gemeinsamen Eisenkern (m) gelegt sind oder jede für sich einen besonderen Eisenkern besitzt.Relay for automatically switching off the welding current of an electrical resistance welding machine after welding with a current and a voltage winding, characterized in that one winding is formed from a loop of the secondary winding of the transformer (t) and the second winding with the welding electrodes {a and b) is connected, both windings are either placed around a common iron core (m) or each has a special iron core. e χe χ
DED41067D 1922-01-15 1922-01-15 Relay for automatically switching off the welding current of an electrical resistance welding machine after welding Expired DE413035C (en)

Priority Applications (1)

Application Number Priority Date Filing Date Title
DED41067D DE413035C (en) 1922-01-15 1922-01-15 Relay for automatically switching off the welding current of an electrical resistance welding machine after welding

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
DED41067D DE413035C (en) 1922-01-15 1922-01-15 Relay for automatically switching off the welding current of an electrical resistance welding machine after welding

Publications (1)

Publication Number Publication Date
DE413035C true DE413035C (en) 1925-05-02

Family

ID=7045851

Family Applications (1)

Application Number Title Priority Date Filing Date
DED41067D Expired DE413035C (en) 1922-01-15 1922-01-15 Relay for automatically switching off the welding current of an electrical resistance welding machine after welding

Country Status (1)

Country Link
DE (1) DE413035C (en)

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