DE920143C - Arc welding machine with protective device for automatic limitation of the no-load voltage - Google Patents

Arc welding machine with protective device for automatic limitation of the no-load voltage

Info

Publication number
DE920143C
DE920143C DEA17239A DEA0017239A DE920143C DE 920143 C DE920143 C DE 920143C DE A17239 A DEA17239 A DE A17239A DE A0017239 A DEA0017239 A DE A0017239A DE 920143 C DE920143 C DE 920143C
Authority
DE
Germany
Prior art keywords
welding
welding machine
protective device
arc welding
arc
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
DEA17239A
Other languages
German (de)
Inventor
Dipl-Ing Rudolf Thoma
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.)
ARCOS GES fur SCHWEISSTECHNIK
Original Assignee
ARCOS GES fur SCHWEISSTECHNIK
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 ARCOS GES fur SCHWEISSTECHNIK filed Critical ARCOS GES fur SCHWEISSTECHNIK
Priority to DEA17239A priority Critical patent/DE920143C/en
Application granted granted Critical
Publication of DE920143C publication Critical patent/DE920143C/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
    • B23K9/00—Arc welding or cutting
    • B23K9/10—Other electric circuits therefor; Protective circuits; Remote controls
    • B23K9/1006—Power supply
    • B23K9/1012—Power supply characterised by parts of the process
    • B23K9/1031—Reduction of the arc voltage beneath the arc striking value, e.g. to zero voltage, during non-welding periods

Landscapes

  • Engineering & Computer Science (AREA)
  • Physics & Mathematics (AREA)
  • Plasma & Fusion (AREA)
  • Mechanical Engineering (AREA)
  • Arc Welding Control (AREA)

Description

Die Leerlaufspannung von elektrischen Lichtbogenschweißgeräten ,darf nach dein bestehenden Vorschriften bestimmte Werte, wie z. B. 70 oder 42 Volt, nicht übersteigen. Es sind .daher Einrichtungen entwickelt und bekannt eworden, welche die Klemmenspannung des Schweißgerätes während des Leerlaufes, c1. h. in den Schweißpausen, auf eine bestimmte Höhe begrenzen. Während des Schweißens dagegen, wem .die Klemmenspannung auf den niedrigeren und ungefährlichen Wert der Arbeitsspannung von z. B. 2o bis 3o Volt herabsinkt, ist die Schutzeinrichtung unwirksam, um dem Schweißprozeß seinen freien Lauf zu lassen.The open circuit voltage of electric arc welding equipment is allowed according to your existing regulations, certain values, such as B. 70 or 42 volts, not exceed. Facilities have therefore been developed and known which the terminal voltage of the welding machine during idling, c1. H. in the welding breaks, limit to a certain amount. During welding, on the other hand, to whom. The terminal voltage to the lower and harmless value of the working voltage of z. B. 2o to If 30 volts drops, the protective device is ineffective for the welding process to let free rein.

Schutzeinrichtungen können jedoch versagen. Die Erfindung betrifft ein Lichtbogenschweißgerät mit Schutzeinrichtung zur selbsttätigen Begrenzung der Leerlaufspannung, bei welchem auf einfachste Weise angezeigt wird und überwacht werden kann, ab die SchutzaInrichtung noch wirksam ist und die zulässige Höhe der Klemmenspannung des Lichtbogenschweißgerätes nicht überschritten. wird.Protective devices can, however, fail. The invention relates to an arc welding device with protective device for automatic limitation of the Open circuit voltage, which is displayed and monitored in the simplest possible way from the protective device is still in effect and the permissible level of The terminal voltage of the arc welding device has not been exceeded. will.

Hierzu äst gemäß, der Erfindung eine handelsübliche Glimmlampe paraUel zu den: Schweißstromklemmen des Schweißgerätes geschaltet. Diese besitzt eine solche Ansprechspannung, da:( sie während des Schweißprozesses, d. h. bei .der ungefährlichen Arbeitsspannung von z. B. nur 2o bis 3o Volt, nicht zum Aufleuchten kommt. Sobald djedoch d:er'Schweißlichtbogen abreißt und. die Klemmenspannung des Schwefgerätes durch ein Versagein der Schutzeinrichtung saufeinen unerwünschten Wert der L,ecrlaufspamnumg steigen sollte, -zündet die Glimmlampe und zeigt durch ihr ununterbrochenes Leuchten an, daß die Schutzeinrichtung nicht in Ordnung ist. Der einwandfreie Zustand :der Glimmlampe kann erfindungsgemäß dadurch jederzeit geprüft werden,, daß man die Schutzeinrichtung bewwßt durch einen Schalteroder sonstwie außer Betrieb setzt bzw. überbrückt und damit an die Glimmlampe die Leerlaufspannung in voller Höhe anlegt.For this purpose, according to the invention, a commercially available neon lamp parallel to the: welding current terminals of the welding machine switched. This has one Response voltage, because :( it during the welding process, i.e. in the case of the non-hazardous Working voltage of z. B. only 2o to 3o volts, does not light up. As soon d, however d: he breaks the welding arc and. the terminal voltage of the welding device a failure of the protective device will result in an undesired value of the leakage spam should rise, -igns the glow lamp and shows by its uninterrupted glow indicates that the protective device is not in order. The perfect condition: the According to the invention, glow lamp can be checked at any time by removing the protective device deliberately by a switch or otherwise disabled or bridged and so that the full open circuit voltage is applied to the glow lamp.

In. ;der Zeichnung äst die Erfindung schematisch veranschaulicht. Es bezeichnet a den Schweißtransformatur mit Schutzeinrichtung, U lnd c die Schweißstnomzuführungen und d die Glimmlampe.In. The drawing shows the invention schematically. It denotes a the welding transformer with protective device, U lnd c the welding current feeds and d the glow lamp.

Claims (2)

PATENTANSPRÜCHE: i. Lichtbiogenschweßgerät mit Schutzeinxichtung zur sielbsttätigen B,egnenzung der Leerl,aufspamnung, dadurch gekennzeichnet, da@ß zur Überwachung dies Arbeitens der Schwtzezn,richtung :eine Glimmlampe parallel zu den Schweißstroniklemmen,des Schweißgerätes geschaltet ist, ,dienen Ansprechspannung höher als die maximal auftretende Arbeits- bzw. Lichtbogenspannung, jedoch unter der unerwünschten Leerlaufspan:nun;g des Schweißgerätes liegt. PATENT CLAIMS: i. Arc welding machine with protective device for self-acting B, eg denoting the void, Aufspamnung, characterized by the fact that @ ß to Monitoring this work of the Schwtzezn, direction: a glow lamp parallel to the Electronic welding terminals, of the welding device, are used, serve the response voltage higher than the maximum occurring working or arc voltage, but below the unwanted idle chip: now; g of the welding machine lies. 2. Lichtbogernschw#eißgerät nach Anspruch i, dadurch gekennzeichnet, da,ß zur Prüfung des Ansprechens der Glirnml:ampe bei überhöhter Leerlaufspann ung die Schwtzeiinrichtung des Schweißgerätes durch einen 'Schalter cd. dgl. außer Bietri;eh gesetzt bzw. überbrückt werden kann. Angezogene Druckschriften: USA.-Patentschrift Nr. 2 444 I68.2. Arc welding device according to claim i, characterized in that, ß for checking the response of the cigarette ampe If the open-circuit voltage is too high, the welding machine's welding device will run through a 'switch cd. Like. Except Bietri; can be set or bridged anyway. Dressed References: U.S. Patent No. 2,444,168.
DEA17239A 1953-01-08 1953-01-08 Arc welding machine with protective device for automatic limitation of the no-load voltage Expired DE920143C (en)

Priority Applications (1)

Application Number Priority Date Filing Date Title
DEA17239A DE920143C (en) 1953-01-08 1953-01-08 Arc welding machine with protective device for automatic limitation of the no-load voltage

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
DEA17239A DE920143C (en) 1953-01-08 1953-01-08 Arc welding machine with protective device for automatic limitation of the no-load voltage

Publications (1)

Publication Number Publication Date
DE920143C true DE920143C (en) 1954-11-15

Family

ID=6923857

Family Applications (1)

Application Number Title Priority Date Filing Date
DEA17239A Expired DE920143C (en) 1953-01-08 1953-01-08 Arc welding machine with protective device for automatic limitation of the no-load voltage

Country Status (1)

Country Link
DE (1) DE920143C (en)

Citations (1)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US2444168A (en) * 1945-05-19 1948-06-29 Miller Electric Mfg Voltage reducer for arc welding circuits and the like

Patent Citations (1)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US2444168A (en) * 1945-05-19 1948-06-29 Miller Electric Mfg Voltage reducer for arc welding circuits and the like

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