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 seamInfo
- 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
Links
- 238000003466 welding Methods 0.000 title claims description 7
- 239000007788 liquid Substances 0.000 claims description 4
- 239000002184 metal Substances 0.000 description 2
- 229910052751 metal Inorganic materials 0.000 description 2
- XEEYBQQBJWHFJM-UHFFFAOYSA-N Iron Chemical group [Fe] XEEYBQQBJWHFJM-UHFFFAOYSA-N 0.000 description 1
- 239000000498 cooling water Substances 0.000 description 1
- 230000005611 electricity Effects 0.000 description 1
- 239000012530 fluid Substances 0.000 description 1
- 238000009413 insulation Methods 0.000 description 1
- 230000007257 malfunction Effects 0.000 description 1
- 238000004804 winding Methods 0.000 description 1
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
- B23K11/30—Features relating to electrodes
- B23K11/3036—Roller electrodes
-
- H—ELECTRICITY
- H01—ELECTRIC ELEMENTS
- H01R—ELECTRICALLY-CONDUCTIVE CONNECTIONS; STRUCTURAL ASSOCIATIONS OF A PLURALITY OF MUTUALLY-INSULATED ELECTRICAL CONNECTING ELEMENTS; COUPLING DEVICES; CURRENT COLLECTORS
- H01R39/00—Rotary current collectors, distributors or interrupters
- H01R39/64—Devices for uninterrupted current collection
- H01R39/646—Devices 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)
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)
| 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 |
-
1923
- 1923-07-28 DE DESCH68318D patent/DE408072C/en not_active Expired
Cited By (1)
| 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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