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DE408072C - Electric pipe welding machine with electrode rollers working on both sides of the seam - Google Patents

Electric pipe welding machine with electrode rollers working on both sides of the seam

Info

Publication number
DE408072C
DE408072C DESCH68318D DESC068318D DE408072C DE 408072 C DE408072 C DE 408072C DE SCH68318 D DESCH68318 D DE SCH68318D DE SC068318 D DESC068318 D DE SC068318D DE 408072 C DE408072 C DE 408072C
Authority
DE
Germany
Prior art keywords
seam
sides
welding machine
pipe welding
electric pipe
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
DESCH68318D
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.)
Individual
Original Assignee
Individual
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 Individual filed Critical Individual
Priority to DESCH68318D priority Critical patent/DE408072C/en
Application granted granted Critical
Publication of DE408072C publication Critical patent/DE408072C/en
Expired legal-status Critical Current

Links

Classifications

    • BPERFORMING OPERATIONS; TRANSPORTING
    • B23MACHINE TOOLS; METAL-WORKING NOT OTHERWISE PROVIDED FOR
    • B23KSOLDERING OR UNSOLDERING; WELDING; CLADDING OR PLATING BY SOLDERING OR WELDING; CUTTING BY APPLYING HEAT LOCALLY, e.g. FLAME CUTTING; WORKING BY LASER BEAM
    • B23K11/00Resistance welding; Severing by resistance heating
    • B23K11/30Features relating to electrodes
    • B23K11/3036Roller electrodes
    • HELECTRICITY
    • H01ELECTRIC ELEMENTS
    • H01RELECTRICALLY-CONDUCTIVE CONNECTIONS; STRUCTURAL ASSOCIATIONS OF A PLURALITY OF MUTUALLY-INSULATED ELECTRICAL CONNECTING ELEMENTS; COUPLING DEVICES; CURRENT COLLECTORS
    • H01R39/00Rotary current collectors, distributors or interrupters
    • H01R39/64Devices for uninterrupted current collection
    • H01R39/646Devices for uninterrupted current collection through an electrical conductive fluid

Landscapes

  • Engineering & Computer Science (AREA)
  • Mechanical Engineering (AREA)
  • Electrical Discharge Machining, Electrochemical Machining, And Combined Machining (AREA)

Description

Gegenstand der Erfindung ist eine neue Ausführungsform für elektrische Rohrschweißmaschinen. Die Zeichnung zeigt in Abb. ι die Rollenanordnung der bisher bekannten Art, in Abb. 2 und 3 die neue Anordnung im Schnitt. Bei der alten Ausführung nach Abb. 1 pressen die beiden Druckrollen D, D die Rohrnaht zusammen, während die beiden Elektroden E, E, an je einem Pol des Schweißtransformators liegend, den Schweißstrom zuführen.The invention relates to a new embodiment for electrical pipe welding machines. The drawing shows in Fig. Ι the roller arrangement of the previously known type, in Fig. 2 and 3 the new arrangement in section. In the old version according to Fig. 1, the two pressure rollers D, D press the pipe seam together, while the two electrodes E, E, each located on one pole of the welding transformer, supply the welding current.

Diese Anordnung ist nicht im Dauerbetrieb verwendbar denn die Zuführung des niedriggespannten Schweißstromes zu den sich drehenden Elektroden muß hier durch Gleitkontakte erfolgen. Als solche dienen fast immer die Lager der Rollenachsen. Bei allen derartigen Gleitkontakten muß aber der Strom eine sich durch die Drehung ständig erhaltende und erneuernde ölschicht durchsetzen. Dadurch entsteht in dieser Schicht eine große Wärmeentwicklung, die das öl zersetzt, so daß diese Gleitkontakte immer nach wenigen Betriebsstunden durch Fressen der Flächen unbrauchbar werden.This arrangement cannot be used in continuous operation because the low-voltage welding current is fed to the self rotating electrodes must be done here by sliding contacts. As such serve almost always the bearings of the roller axles. With all such sliding contacts, however, the Electricity penetrate a layer of oil that is constantly maintained and renewed by the rotation. This creates a lot of heat in this layer, which breaks down the oil, so that these sliding contacts are always unusable after a few hours of operation due to the surfaces being eroded.

Die neue Anordnung ermöglicht aber die Stromzufuhr zu den Rollen durch Flüssigkeitskontakte. Hierbei liegt zwischen dem flüssigen Kontaktgeber (Metall) und der sichHowever, the new arrangement enables power to be supplied to the rollers through fluid contacts. Here lies between the liquid contactor (metal) and the itself

in ihm drehenden Elektrodenachse keine nichtleitende ölschicht. Der Kontakt ist ununterbrochen metallisch, und damit fallen alle durch Gleitkontakte sonst verursachten Störungen fort.no non-conductive oil layer in the rotating electrode axis. The contact is continuous metallic, and thus all malfunctions otherwise caused by sliding contacts are eliminated.

Wie Abb. 2 erkennen läßt, ist die Verwendung senkrechter Wellen, welche, in Flüssigkeitskontakte tauchend, den Elektroden den Schweißstrom zuführen, dadurch ermöglicht, daß die Elektroden E, E einen Teil, und zwar den der Naht nächstliegenden, der Druckrollen D bilden. Um den Stromdurchgang von Druckrolle zu Druckrolle durch den unteren Teil des Rohres zu hindern, sind die Druckrollen von den Wellen A und den Elektroden E isoliert. Diese Isolation wird zweckmäßig so dick gewählt, daß sie als elastisches Zwischenglied wirkt, wodurch immer ein festes Anpressen der Elektroden E möglich wird, auch wenn durch Abnutzung sich die Profilanlage ändert.As can be seen in Fig. 2, the use of vertical waves, which, immersed in liquid contacts, feed the welding current to the electrodes, is made possible by the fact that the electrodes E, E form a part of the pressure rollers D that is closest to the seam. In order to prevent the passage of current from pressure roller to pressure roller through the lower part of the pipe, the pressure rollers are isolated from the shafts A and the electrodes E. This insulation is expediently chosen so thick that it acts as an elastic intermediate member, whereby a firm pressing of the electrodes E is always possible, even if the profile system changes due to wear.

T ist der Eisenkern des Transformators, P die Primäre, S der Teil der Sekundärwindung, welcher die Kontaktgefäße K, K trägt, während die Elektrodenachsen A mit dem inneren Teil der Rollen £ den Sekundärkreis iiber die Rohrnaht schließen. Das in die tellerartige Elektrode fließende Kühlwasser fließt durch die Bohrung der Achse nach unten, tritt durch die Löcher i aus, überdeckt das Kontaktmetall und fließt aus K durch 6o, T is the iron core of the transformer, P the primary, S the part of the secondary winding which carries the contact vessels K, K , while the electrode axes A with the inner part of the rollers close the secondary circuit over the pipe seam. The cooling water flowing into the plate-like electrode flows down through the bore of the axle, exits through the holes i , covers the contact metal and flows out of K through 6o,

Überlauf ab. Die Lager L sind quer zur Rohrachse verschiebbar, so daß durch Druckschrauben u. dgl. der nötige Rollendruck erzeugt werden kann. Die Triebwelle g treibt durch die Schneckenräder R an.Overflow. The bearings L can be displaced transversely to the pipe axis, so that the necessary roller pressure can be generated by pressure screws and the like. The drive shaft g drives through the worm wheels R.

Eine andere Anordnung zeigt Abb. 3. Hier arbeiten drei Rollen auf dem Rohrumfang verteilt. Die untere Rolle wirkt nur als Druckrolle. Die beiden oberen sind wieder wie bei Abb. 2 in den als Elektrode wirkenden Teil B und den als Druckrolle wirkenden Teil D unterteilt. Die Lager L der beiden schrägstehenden Rollen schwingen um die beiden miteinander gekuppelten Triebwellenmitten g, g. Deshalb bleiben bei Verstellung der Rollen E, E durch die Druckschrauben in Z die Schnecken W immer in gleichem Eingriff mit den Schneckenrädern R, DieAnother arrangement is shown in Fig. 3. Here three rollers work distributed around the circumference of the pipe. The lower roller only acts as a pressure roller. As in Fig. 2, the upper two are again subdivided into part B , which acts as an electrode, and part D, which acts as a pressure roller. The bearings L of the two inclined rollers swing around the two drive shaft centers g, g which are coupled to one another. Therefore, when the rollers E, E are adjusted by the pressure screws in Z, the worms W always remain in the same engagement with the worm wheels R, Die

Abb. 3.Fig. 3.

Lage der Elektrodenwellen, die nur 300 von der Senkrechten abweicht, ermöglicht auch hier die Verwendung der Flüssigkeitskontakte K. Dabei ermöglicht die Verwendung von drei Druckrollen bei großen Rohrdurchmessern und verhältnismäßig dünner Wand eine bessere Führung des Rohrprofils.Position of the electrode shafts 30 0 deviates from the vertical, here also permits the use of liquid contacts K. In this case, the use of three pressure rollers with large pipe diameters and relatively thin wall allows a better guidance of the pipe section.

Claims (1)

Patent-Anspruch:Patent claim: Elektrische Rohrschweißmaschine mit zu beiden Seiten der Naht arbeitenden Elektrodenrollen, dadurch gekennzeichnet, daß jede Elektrodenrolle einen elektrisch isolierten Teil einer Druckrolle bildet und der Strom durch die in einen Flüssigkeitskontakt tauchende, beiden Teilen gemeinsame Achse zugeführt erhält.Electric pipe welding machine with working on both sides of the seam Electrode rolls, characterized in that each electrode roll is an electrical one insulated part of a pressure roller and the flow through which forms a liquid contact submersible, both parts common axis is fed. Abb. i.Fig.i.
DESCH68318D 1923-07-28 1923-07-28 Electric pipe welding machine with electrode rollers working on both sides of the seam Expired DE408072C (en)

Priority Applications (1)

Application Number Priority Date Filing Date Title
DESCH68318D DE408072C (en) 1923-07-28 1923-07-28 Electric pipe welding machine with electrode rollers working on both sides of the seam

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
DESCH68318D DE408072C (en) 1923-07-28 1923-07-28 Electric pipe welding machine with electrode rollers working on both sides of the seam

Publications (1)

Publication Number Publication Date
DE408072C true DE408072C (en) 1925-01-10

Family

ID=7439390

Family Applications (1)

Application Number Title Priority Date Filing Date
DESCH68318D Expired DE408072C (en) 1923-07-28 1923-07-28 Electric pipe welding machine with electrode rollers working on both sides of the seam

Country Status (1)

Country Link
DE (1) DE408072C (en)

Cited By (1)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
DE2365692A1 (en) * 1972-02-18 1975-12-11 Olin Corp WELDING BOX FOR HIGH FREQUENCY WELDING A METAL STRIP INTO A PIPE

Cited By (1)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
DE2365692A1 (en) * 1972-02-18 1975-12-11 Olin Corp WELDING BOX FOR HIGH FREQUENCY WELDING A METAL STRIP INTO A PIPE

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