DE102019002939A1 - Welding device with welding wire changing mechanism, in particular for orbital welding devices - Google Patents

Abstract

The present invention relates to a welding device (1). The welding device according to the invention preferably has: a current contact nozzle (2), the current contact nozzle (2) having an elongated guide device for guiding a welding wire (4), a nozzle holder (6), the current contact nozzle (2) on or in the nozzle holder ( 6) is arranged, a feed device (100) for transferring the welding wire (4) from a first orientation into a second orientation, wherein the welding wire (4) can be fed in the first orientation of the feed device (100) and in the second orientation from the The feed device (100) can be diverted, in particular can be guided in the direction of the nozzle assembly (6), the feed device (100) having a preferably conical feed surface (102), an elongated line element (200), with several welding wire cores (200) passing through the line element (200). 8, 10), wherein the welding wire cores (8, 10) can be introduced into the line element (200) via a first line element end (232) and wherein the welding wire (4) guided in the welding wire cores (8, 10) can be guided out of the line element (200) via a second line element end (234), the line leading out of the line element (200) via the second line element end (234) Welding wire (4) can be guided in the direction of the feed device (100), in particular penetrates into the feed device (100) in the first orientation.

Description

The present invention relates to a welding device according to claim 1, an orbital welding robot according to claim 12 and a method for operating a welding device according to claim 13.

In many applications, especially in the automotive industry, components have to be provided with different weld seams. For this purpose, complex machine parks are kept ready, such machine parks require high maintenance and acquisition costs, and they also take up a lot of space.

It is therefore the object of the present invention to provide an improved or alternative welding device and an improved or alternative welding method.

• Mindestens oder genau eine Stromkontaktdüse, wobei die Stromkontaktdüse eine längliche Führungseinrichtung zum Führen eines Schweißdrahtes aufweist. Mindestens oder genau einen Düsenstock, wobei die Stromkontaktdüse an oder in dem Düsenstock angeordnet ist.

The invention can be achieved, for example, by a welding device according to claim 1. This welding device preferably has:

• At least or exactly one current contact nozzle, the current contact nozzle having an elongated guide device for guiding a welding wire. At least or exactly one nozzle assembly, the current contact nozzle being arranged on or in the nozzle assembly.

The welding device can have at least or precisely one alignment device.
The nozzle assembly can be or can be connected at least indirectly to the alignment device. The welding wire can preferably be guided through the alignment device into the nozzle assembly, in particular the current contact nozzle. The alignment device preferably has a receiving part and a delivery part, with the current and / or working gas being able to be introduced into the aligning device via the receiving part and with the introduced stream or the introduced working gas being able to be introduced into the nozzle assembly and / or with the introduced flow or the working gas introduced can be conducted to the nozzle assembly via the discharge part. The delivery part can be rotatable with respect to the receiving part, in particular at an angle of more than or up to 45 ° or more or up to 90 ° or more or up to 180 ° or more or up to 270 ° or more or up to to 360 °. The output portion is preferably connected or can be brought into contact with a hollow shaft, in particular a robot or orbital welding robot, in particular can be brought into contact with a friction fit and / or a form fit.

Furthermore, the welding device can have a feed device for transferring the welding wire from a first orientation into a second orientation. The welding wire can be fed to the feed device in the first orientation and can be fed out of the feed device in the second orientation. The welding wire can preferably be led out of the alignment device in the direction of the nozzle assembly, in particular in the direction of the feed device, the feed device having a preferably conical feed surface. The feed device can have or form at least one base part and one interchangeable part, the interchangeable part having the conical feed surface. This is advantageous because the interchangeable part is preferably a wear part. Only one welding wire can preferably be arranged between the feed device and the current contact nozzle. The transport path for guiding the welding wire in the feed device is preferably tapered or limited or its opening width reduced by the feed surface in such a way that only fewer than two welding wires can be arranged in the transport path in the feed device.

Furthermore, the welding device can have an elongated line element. Several, in particular two or exactly two or more than two welding wire cores can be received by the conduit element. The wire cores can preferably be introduced into the line element via a first line element end and the welding wires guided in the welding wire cores can preferably be guided out of the line element via a second line element end. At least one stop is preferably provided to limit the depth of penetration of the wire cores into the line element. The stop can be part of an allocation device. The welding wire guided out of the line element via the second line element end can preferably be guided in the direction of the feed device, in particular can be introduced into the feed device in the first orientation. The allocation device preferably forms at least two axial openings. The end of a wire core can preferably be arranged in a defined manner in front of an opening, the wire guided through this wire core being able to be guided through the opening. The end of a further wire core can preferably be arranged in a defined manner in front of another opening, wherein the further wire guided through the further wire core can be guided through the further opening. The allocation device preferably forms an allocation component by means of which the allocation of the wire core to the opening and the further wire core to the other opening can be effected.

Furthermore, the welding device can have a separating device, in particular for separating the working gas and welding wire. The separating device preferably has at least two Providing facilities. Current, working gas and welding wire can preferably be received via each supply device. The separating device can have several discharge devices. The number of discharge devices can be greater than the number of provision devices.

The welding wires supplied via the supply devices can preferably be led out of the cutting device via a welding wire discharge device. The working gases supplied via the supply devices can preferably be discharged from the separating device via one or more gas outlets. The gas outlets are preferably connected to gas injection devices for recoupling the working gases into the transport path of the welding wire or for flowing around the welding wire or the welding wire core or for introduction into the same line section. The gas coupling devices can be components of the alignment device, in particular of the receiving part, or of the feed device or the allocation device.

Furthermore, the welding device can have a plurality of source devices. Each source device preferably has a power source, working gas source and welding wire source. Each source device is preferably connected to a supply device via a connection device.

Additionally or alternatively, the present invention can relate to a welding device which preferably has at least one feed device for transferring the welding wire from a first orientation into a second orientation, the welding wire being feedable to the feed device in the first orientation and being diverted from the feed device in the second orientation is, in particular, can be guided in the direction of a nozzle assembly or a burner, the feed device having a preferably conical feed surface, and / or an elongated line element, wherein several welding wire cores can be received by the line element, the wire cores being able to be introduced into the line element via a first line element end and wherein the welding wire guided in the welding wire cores can be guided out of the line element via a second line element end, the line element leading out of the line element via the second line element end te welding wire can be guided in the direction of the feed device or the torch, in particular penetrates the feed device in the first orientation and / or an alignment device and / or a separating device and / or allocation device and / or a line element, in particular with an allocation device.

Furthermore, the present invention can relate to a feed device or a welding device with such a feed device.

Furthermore, the present invention can relate to an alignment device or a welding device with such an alignment device.

Furthermore, the present invention can relate to a separating device or a welding device with such a separating device.

Furthermore, the present invention can relate to a line element or a welding device with such a line element.

Furthermore, the present invention can relate to an assignment device or a welding device with such an assignment device.

It is also possible here for the device according to the invention to form part of a welding device. This component preferably has at least the devices mentioned below and the connections existing between these devices: feed device, separating device and line element. In this case, the line element preferably connects the separating device and the feed device. In the working direction (feed direction of the welding wire from the source device to the current contact nozzle), the separating device is arranged first, followed by the line element and the feed device.

Thus, the present disclosure can also include an orbital welding robot. The orbital welding robot has at least one welding device disclosed in the overall disclosure content of this protective right specification. At least a portion of the welding device, in particular the feed device and / or a portion of the conduit element, preferably runs.

• Zuführen eines ersten Schweißdrahts in Arbeitsrichtung und eines ersten Arbeitsgases von einer ersten Quelleneinrichtung zu einer Stromkontaktdüse; Bewegen des Schweißdrahts entgegen der Arbeitsrichtung zum Freigeben eines Schweißdrahtpfades, insbesondere in einem Bereich zwischen der Zuführeinrichtung und der Stromkontaktdüse; Zuführen eines zweiten Schweißdrahtes in Arbeitsrichtung und eines zweiten Arbeitsgases von einer zweiten Quelleneinrichtung zur Stromkontaktdüse über denselben Schweißdrahtpfad, insbesondere in einem Bereich zwischen der Zuführeinrichtung und der Stromkontaktdüse; wobei der erste Schweißdraht und der zweite Schweißdraht auf getrennten Schweißdrahtpfaden von den Quelleneinrichtungen zur Zuführeinrichtung gefördert werden.

Furthermore, the present invention can relate to a method for operating a welding device according to one of Claims 1-11 or for operating an orbital welding robot according to Claim 12. The method preferably comprises at least the following steps:

• Feeding a first welding wire in the working direction and a first working gas from a first source device to a current contact nozzle; Moving the welding wire against the working direction to release a welding wire path, in particular in an area between the feed device and the current contact nozzle; Feeding a second welding wire in the working direction and a second working gas from a second source device to the current contact nozzle via the same welding wire path, in particular in an area between the feed device and the current contact nozzle; wherein the first welding wire and the second welding wire are conveyed on separate welding wire paths from the source devices to the supply device.

According to a further preferred embodiment of the present invention, the respectively supplied working gas is fed from the respective source device together with the respective welding wire via a respective connecting device to a separating device. Working gas and welding wire are preferably always or predominantly supplied to the separating device from only one or precisely one source device. The separating device preferably directs the working gas into a gas line and the welding wire onto a welding wire path separate from the gas line, in particular a line, in particular a hose or pipe.

According to a further preferred embodiment of the present invention, the gas line is connected to the feed device and the working gas guided via the gas line is preferably coupled into the transport path of the welding wire by the feed device to flow around the welding wire or welding wire core conveyed by the feed device. The separating device and the supply device are particularly preferably in a fluidic connection with one another via two or at least two or precisely two gas lines. This is advantageous because the gas lines can be flushed to prevent gas mixtures.

Further advantages, aims and properties of the present invention are explained with reference to the following description of the attached drawings, in which welding devices according to the invention are shown by way of example. Elements of the devices according to the invention and method steps which in the figures at least essentially correspond in terms of their function can be identified with the same reference symbols, although these components or elements or steps need not be numbered or explained in all figures. The invention is described below purely by way of example with reference to the accompanying figures.

• 1a-c Bauteile einer erfindungsgemäßen Schweißvorrichtung;
• 2, 3a-f Darstellungen eines Beispiels einer erfindungsgemäßen Zuführeinrichtung;
• 4a-e Darstellungen eines Beispiels einer erfindungsgemäßen Zuordeneinrichtung;
• 5a-c Darstellungen eines Beispiels eines erfindungsgemäßen Leitungselements;
• 6, 7a-f Darstellungen eines Beispiels einer erfindungsgemäßen Trenneinrichtung; und
• 8 eine Darstellung eines erfindungsgemäßen Orbitalschweißroboters mit einer integrierten erfindungsgemäßen Schweißvorrichtung.

Show in it:

• 1a-c Components of a welding device according to the invention;
• 2 , 3a-f Representations of an example of a feed device according to the invention;
• 4a-e Representations of an example of an allocation device according to the invention;
• 5a-c Representations of an example of a line element according to the invention;
• 6 , 7a-f Representations of an example of a separating device according to the invention; and
• 8th a representation of an orbital welding robot according to the invention with an integrated welding device according to the invention.

1 shows a welding device 1 . This welding device preferably has at least one current contact nozzle 2 on. The current contact nozzle 2 preferably has an elongated guide device for guiding a welding wire 4th on. Furthermore, the welding device can have a nozzle assembly 6 exhibit. The current contact nozzle 2 can be on or in the nozzle assembly 6 be arranged. Furthermore, a feed device 100 for transferring the welding wire 4th be provided from a first orientation into a second orientation. The welding wire 4th can in the first orientation of the feeder 100 be feedable and in the second orientation from the feeder 100 be diverted, in particular the welding wire is in the direction of the nozzle assembly 6 controllable. The feeding device 100 can have a preferably conical feed surface 102 have, which is preferably hardened. Furthermore, an elongated line element 200 be provided by the line element 200 several welding wire cores 8th , 10 are recordable. Via a first line element end 232 are the welding wire souls 8th , 10 in the line element 200 can be introduced and where the in the welding wire cores 8th , 10 guided welding wires 4th , 5 via a second line element end 234 from the line element 200 are feasible. The one from the line element 200 over the second line element end 234 welding wire led out 4th , 5 is in the direction of the feeder 100 can be guided, in particular in the first orientation into the feed device 100 penetration.

Furthermore, an alignment device 14th be provided, the nozzle assembly 6 at least indirectly with the alignment device 14th connected is. A welding wire 4th , 5 can through the alignment device 14th through into the nozzle assembly 6 , especially the current contact nozzle 2 , be directed. The alignment device 14th preferably has an uptake portion 16 and a royalty portion 18th having, wherein about the receiving portion 16 Electricity and / or working gas in the alignment device 14th can be initiated and wherein the injected stream or working gas is introduced via the discharge portion 18th to the nozzle assembly 6 is controllable.

The 2 and 3a-3f show examples of a feeding device 100 . The feeding device 100 gives a transport path for transporting a welding wire 4th , 5 , especially in the direction of the current contact nozzle 2 , in front of or at least partially forms such a transport path.

An electrically insulating sleeve is preferred 114 , in particular consisting of a polymer material or comprising a polymer material, provided. The sleeve 114 preferably at least partially and particularly preferably predominantly or completely overlies the feed device 100 in the circumferential direction. The sleeve 114 isolated at least 500V or 1000V or 2000V.

Furthermore, the feed device 100 Fiber optic heads 116 , 118 exhibit. A fiber optic head 116 is arranged or can be arranged on one side of the transport path or laterally spaced from it and the other light guide head 118 is on the other hand the transport path or opposite the first light guide head 116 arranged or placeable. The first fiber optic head 116 and the second fiber optic head 118 are aligned to communicate with one another. This is advantageous because, for example, the presence of a welding wire 4th , 5 can be determined. The light guide heads are preferred 116 , 118 with a sensor or a sensor device 130 via fiber optics 132 , 134 connected. A sensor array is preferably formed or a sensor array is provided. A sensor array is advantageous because, in addition to determining the presence, it allows the feed speed of the new into the feed device 100 to determine the inserted welding wire. Furthermore, it can be possible that through the optical analysis of the welding wire by means of the sensor device 130 Surface properties, in particular purity, defects and / or impurities, are recognized. The fiber optic heads 116 , 118 are preferably arranged or aligned at an angle of 90 ° to the wire guide or to the transport path. A fiber optic head 116 serves as a transmitter and a fiber optic head 118 serves as the recipient. The sensor device 130 thus preferably couples defined light waves into the first light guide head 116 one and the other fiber optic head 118 picks up these or parts of these emitted light waves and transmits them to the sensor device 130 , especially for analysis, continue.

Additionally or alternatively, the feed device can 100 for transferring the welding wire 4th serve from a first orientation to a second orientation. The welding wire 4th , 5 becomes the feeder 100 fed in the first orientation and from the feed device in the second orientation 100 diverted, especially in the direction of the nozzle assembly 6 . The feeding device 100 preferably has a conical feed surface 102 on. The feeding surface 102 can be part of an interchangeable part 106 be. The changeable part 106 can, for example, form-fit or non-positive fit or material fit with a base part 104 the feeding device 100 , in particular releasably connected. The changeable part 106 may have a different material or consist of a different material than the base part 104 . The other material is preferably steel, in particular hardened steel, or a ceramic material. The feeding surface 102 forms an entry area 136 and an exit area 138 on. The exit area 138 is closer to the current contact nozzle in the working direction 2 or aligned with the weld location as the entry area 136 . The smallest diameter of the entry area 136 is preferably at least 1.3 or 1.5 or 1.8 or 2 or 2.5 or 3 or 4 or 5 times larger than the smallest diameter of the exit area 138 .

Additionally or alternatively, the feed device 100 Working gas connections, in particular a first gas coupling device 108 and a second gas coupling device 110 , on. The first gas coupling device 108 is used to connect to the first gas discharge device 226 which working gas through the first gas outlet 320 the separator 300 receives. The second gas coupling device 110 is used to connect to the second gas discharge device 228 which working gas through the second gas outlet 322 the separator 300 receives.

The working gas connections 108 , 110 are preferably on a mass element 140 formed or arranged. The mass element 140 preferably forms at least 10% and particularly preferably at least 20% or at least 30% or at least 40% or at least 50% or at least 60% or at least 70% of the mass of the feed device 100 out. The mass element 140 preferably forms a ring-like element, the thickness of the ring increasing in the axial direction or in the transport direction of the welding wire within the feed device 100 extends. The ring can have a thickness of more than 5 mm or more than 8 mm or more than 10 mm or more than 12 mm. The welding wire transport path particularly preferably runs through the radial center of the ring. The ring 140 preferably has two bores oriented in the direction of the center of the ring 142 on. The holes 142 run starting from an outer circumferential surface 146 of the ring 140 towards the center of the ring 140 . The first gas coupling device 108 is preferred over the first hole 142 inclined, in particular oriented at an angle of 90 °. The first Gas coupling device 108 is with the first hole 142 communicating (for working gas exchange) connected. Furthermore, the ring 140 starting from its circumferential surface, in particular extending in the radial direction, one or more recesses 146 , 148 exhibit. The recesses 146 , 148 preferably extend over the entire thickness of the ring 140 . The recess preferably extends 146 or the recesses extend 146 , 148 in the radial direction or towards the center of the ring at least or up to 3mm or at least or up to 4mm or at least or up to 5mm or at least or up to 6mm or at least or up to 7mm or at least or up to 8mm or at least or up to 9mm or at least or up to 10mm or at least or up to 12mm or at least or up to 15mm. The opening width of the recess 146 , 148 is preferably at least or up to 1mm or at least or up to 1.5mm or at least or up to 2mm or at least or up to 2.5mm or at least or up to 3mm or up to 3.5mm or at least or up to 4mm or at least or up to 4.5mm or at least or up to 5mm. The opening width describes the distance between the flat parts of the surface ( 150 , 152 ) a recess 146 , 148 to each other.

The second gas coupling device 110 is preferably inclined with respect to the second bore (not shown), in particular oriented at an angle of 90 °. The second gas coupling device 110 communicates with the second bore (for working gas exchange).

The feed device preferably has 100 a feed surface 102 and fiber optic heads 116 , 118 on, the fiber optic heads 116 are preferably closer to the current contact nozzle 2 or aligned with the weld location as the feed surface 102 .

The feed device preferably has 100 a feed surface 102 and a mass element 140 on, the ground element is preferably closer to the current contact nozzle 2 or aligned with the weld location as the feed surface 102 .

The feed device preferably has 100 one fiber optic head or several fiber optic heads 116 , 118 and a mass element 140 on, the mass element 140 is preferably closer to the current contact nozzle 2 or aligned with the weld location as the fiber optic head or heads 116 , 118 .

The feed device preferably consists mainly (in terms of mass) or completely of a metallic material or a combination of materials, in particular of copper or brass.

4th shows an allocation device 250 for receiving and defined alignment of elongated guide devices, in particular wire cores 8th , 10 . The allocation facility 250 preferably has at least one inlet opening 266 and an exit port 278 on. The inlet opening is preferred 266 in the axial direction from the outlet opening 278 spaced. Between the inlet opening 266 and the outlet opening 278 a wall is particularly preferred 280 arranged or formed, the wall 280 two or at least two or exactly two through openings 252 , 254 having, the through openings 252 , 254 preferably have the same diameter, preferably the through openings 252 , 254 in the direction of the inlet opening 266 each feed bevel 262 , 264 on. Between the through openings 252 , 254 and the outlet opening 278 is preferably an outlet space 258 educated. Between the through openings 252 , 254 and the entrance opening area 270 is preferably an interior 268 educated. The interior preferably extends 268 further in the axial direction than the outlet space 258 . The outlet space preferably has 258 a continuous, in particular cylindrical, shape on and / or the interior 266 preferably has a continuous shape in sections or only in sections, in particular mostly (in terms of length). The interior preferably extends 266 in width direction 274 further than in the vertical direction 272 . The interior preferably extends 166 in width direction 274 at least a factor of 1.3 or 1.5 or 1.7 or 1.9 or 2 or 2.5 further than in the height direction 272 . The interior preferably forms 266 at least in sections and preferably for the most part or completely, a cross-sectional area (orthogonal to the axial direction) which deviates from a round shape. The outlet space preferably forms 258 at least in sections and preferably for the most part or completely from a cross-sectional area (orthogonal to the axial direction) which preferably corresponds to a circular shape. Furthermore, the allocation device can consist of metal, in particular brass or copper or steel or aluminum or a noble metal. Alternatively, the allocation device can consist of a ceramic material, a composite material or a polymer material or a material combination of the materials mentioned.

Furthermore, the allocation device 250 a circumferential collar 276 exhibit. The collar 276 preferably extends along the outer surface of the allocation device 250 or forms this outer surface 282 with off. The interior 268 is thus from the inner surface 284 limited. The collar is preferably superimposed 276 the openings in the radial direction 252 , 254 . However, it is alternatively possible that the collar 276 does not exist or does not exist in the radial direction or only partially superimposed. The outer surface 282 is in the area in which it is the outlet space 258 preferably superimposed cone-shaped. The outer surface 282 is in the area in which it is the interior 269 superimposed, preferably cylindrical, it being possible that the outer surface 282 in this area preferably has a thread or a corrugation in sections.

The mapper 250 is advantageous because it “blindly” a defined assignment and alignment of guide facilities 10 , 11 causes.

The allocation facility 250 can particularly preferably be part of a conduit element 200 , especially for holding welding wire cores 10 , 11 for guiding welding wire 4th , 5 be.

5a-c show examples of line elements 200 .

The line element 200 preferably has a conduit space 236 to accommodate several, in particular two or exactly two or at least two, welding wire cores 8th , 10 on.

The line element 200 preferably has a first end 232 on, preferably with a separator 300 is connectable. Additionally or alternatively, the line element 200 a second ending 234 on, preferably with a feeder 100 is connectable.

On the line element 200 can, for example, use a preferably insulating jacket or hose or band a gas supply device 226 or several gas supply devices 226 , 228 be arranged.

Preferred are of the line element 200 Welding wire cores 8th , 10 recordable, each already in sections by a separating device 300 are enclosed. From the source institutions 90 , 92 are therefore welding wires 4th , 5 through the welding wire cores 8th , 10 until the second end 234 of the line element 200 fundable. One of the promoted welding wires 4th or 5 can then the feeder 100 are fed. This then guides the welding wire in a defined manner into a further or third welding wire core 20th one.

6 shows an example of a separator 300 .

The separator 300 has at least two provision devices 302 , 304 on. Via each of these delivery facilities 302 , 304 Electricity, gas and welding wire can be absorbed. Preferably, they differ from the different source devices 90 , 92 to the respective provisioning facilities 302 , 304 transmitted media from each other. The first source device preferably provides 90 a first welding wire and a first working gas and a first stream ready. The second source device preferably provides 92 a second welding wire and a second working gas and a second stream ready. The first welding wire preferably differs from the second welding wire, in particular with regard to the material and / or the thickness. Additionally or alternatively, the first gas differs from the second gas, in particular with regard to the composition and / or the density and / or the temperature and / or the pressure. Additionally or alternatively, the first current differs from the second current, in particular with regard to the current strength.

The via the provision facilities 302 , 304 supplied welding wires 4th , 5 are preferred in wire cores 8th , 10 guided and via a welding wire discharge device 306 , in particular a common line section, from the separating device 300 diverted.

The via the provision facilities 302 , 304 supplied gases are via one or more gas outlets 320 , 322 from the separator 300 divertible. The separator 300 preferably has several discharge devices 306 , 320 , 322 on, with the number of discharge devices 306 , 320 , 322 is greater than the number of provision devices 302 , 304 .

The separator 300 preferably forms an input part 312 and an output part 314 or has these parts. The entrance part 312 is here with the first connecting device 91 and with the second connecting device 93 connectable and the output part 314 is preferred with the conduit element 200 connectable. The entrance part 312 far away gas outlets 320 , 322 on.

At least one sealing element is preferred 315/316 or 317 intended. The sealing element 315 can as well as the sealing element 316 be designed as a ring seal or disk seal. The sealing elements preferably act 315 , 316 force-fit on the outer surfaces of the welding wire cores 8th , 10 and thereby cause a sealing effect, ie prevent a gas flow into the outlet part 314 . Additionally or alternatively, the output part 314 , especially in the area of the transition from the separate welding wire core guide ( 324 ) into the common welding wire core guide ( 326 ) a gap seal 317 form.

The reference number 318 indicates a sleeve, especially for electrical insulation. The Sleeve 318 isolated preferably at least 500V and particularly preferably at least 1000V or 2000V.

List of reference symbols

1

Welding device

2

Current contact nozzle

4th

first welding wire

5

second welding wire

6th

Nozzle holder

8th

first welding wire core

9

End of the first welding wire core

10

second welding wire core

11

End of the second welding wire core

14th

Alignment device

16

Intake share

18th

Duty share

20th

third wire core

80

Torch / torch neck

82

Gas nozzle

90

first source setup

91

first connection device

92

second source device

93

second connecting device

94

first source device-connector interface

96

second source device-connector interface

98

TCP adapter

100

Feeding device

102

Feeding surface

104

Base part

106

Change part

108

first gas coupling device

110

second gas coupling device

112

Holding device / holding plate / angle

114

Insulating sleeve (front)

116

first light guide head

118

second light guide head

120

Wire inlet

122

Sealant (e.g. O-ring)

124

Attachment / thickening

126

first working gas inlet

128

second working gas inlet

130

sensor

132

first light guide

134

second light guide

136

Entrance area

138

Exit area

140

Mass element / ring

142

drilling

144

Solder insert

146

first recess

148

second recess

150

first flat area portion

152

second flat area portion

200

Line element

206

attack

220

Fixing element / union nut

222

Transfer cone (rear)

224

further fixing element / union nut

226

first gas discharge device

228

second gas discharge device

230

electrical insulation (> 500V)

232

Separator-side end

234

Feeder-side end

236

Cable space to accommodate several welding wire cores

250

Allocation facility

252

first axial opening

254

second axial opening

256

Allocation share

258

Outlet space

260

Outer coupling surface, especially conical

262

first feed slope to the first opening / hole

264

second feed slope to the second opening / bore

266

Inlet opening

268

Inner space between feed inclines and inlet opening

270

inlet opening surface inclined with respect to the longitudinal extension direction

272

Height of the interior

274

Width of the interior

276

collar

278

Outlet opening

280

Wall

282

outer surface

284

inner surface

300

Separator

302

first provision device / threaded connector

304

second provision device / threaded connector

306

Welding wire discharge device / line

312

Entrance part / Y-element rear part

314

Starting part / Y-element front part

315

first sealing element / sealing washer

316

second sealing element / sealing washer

317

Gap seal

318

Sleeve / insulating sleeve

319

Hole to the first gas outlet

320

first gas outlet

321

Hole to the second gas outlet

322

second gas outlet

324

separate welding wire core guide

326

common welding wire core guide

500

Orbital welding robots

Claims (15)

Welding device (1), at least having a current contact nozzle (2), wherein the current contact nozzle (2) has an elongated guide device for guiding a welding wire (4), a nozzle assembly (6), wherein the current contact nozzle (2) is arranged on or in the nozzle assembly (6), a feed device (100) for transferring the welding wire (4) from a first orientation to a second orientation, wherein the welding wire (4) can be fed to the feed device (100) in the first orientation and can be diverted from the feed device (100) in the second orientation is, in particular, can be guided in the direction of the nozzle assembly (6), the feed device (100) having a preferably conical feed surface (102), an elongated conduit element (200), wherein several welding wire cores (8, 10) can be received by the line element (200), wherein the welding wire cores (8, 10) can be introduced into the line element (200) via a first line element end (232) and the welding wire (4) guided in the welding wire cores (8, 10) out of the line element (234) via a second line element end (234). 200) can be led out, wherein the welding wire (4) guided out of the line element (200) via the second line element end (234) can be guided in the direction of the feed device (100), in particular penetrates into the feed device (100) in the first orientation. Welding device according to Claim 1 , characterized in that only one welding wire (4) can be arranged between the feed device (100) and the current contact nozzle (2). Welding device according to one of the preceding claims, characterized in that at least one stop (206) is provided for limiting the penetration depth of the welding wire cores (8, 10) into the line element (200), the stop (206) being part of an allocation device (250) , the allocation device (250) forming at least two axial openings (252, 254), the end (9) of a welding wire core (8) being able to be arranged in a defined manner in front of an opening (252), wherein the welding wire (8) guided through this welding wire core (8) 4) can be guided through the opening (252) and the end (11) of a further welding wire core (10) can be arranged in a defined manner in front of another opening (254), the further welding wire (5) guided through the further welding wire core (10) through the further opening (254) can be guided, the allocation device (250) forming an allocation portion (256) through which the allocation of the welding wire core (8) to the opening (252) and the further welding dr ahtseele (10) to the other opening (254) can be brought about. Welding device according to one of the preceding claims, characterized in that an alignment device (14) is provided, the nozzle assembly (6) being at least indirectly connected to the alignment device (14), a welding wire (4, 5) being passed through the alignment device (14). can be guided through into the nozzle assembly (6), in particular the current contact nozzle (2), the alignment device (14) having a receiving part (16) and a discharge part (18), with current and / or working Gas can be introduced into the alignment device (14) and wherein the introduced stream or the introduced working gas can be directed to the nozzle assembly (6) via the discharge part (18). Welding device according to Claim 4 , characterized in that the delivery part (18) is rotatable with respect to the receiving part (16). Welding device according to one of the preceding claims, characterized in that the feed device (100) has at least one base part (104) and one interchangeable part (106), the interchangeable part (106) having the conical feed surface (102). Welding device according to one of the preceding claims, characterized in that a separating device (300) is provided, the separating device (300) having at least two supply devices (302, 304), with electricity, gas and welding wire being able to be received via each supply device (302, 304) The welding wires (4, 5) supplied via the supply devices (302, 304) can be led out of the separating device (300) via a welding wire discharge device (306) and the gases supplied via the supply devices (302, 304) via one or more Gas outlets (320, 322) can be diverted from the separating device (300). Welding device according to Claim 7 , characterized in that the separating device (300) has several discharge devices (306, 320, 322), the number of discharge devices (306, 320, 322) being greater than the number of provision devices (302, 304). Welding device according to one of the preceding claims, characterized in that the gas outlets (320, 322) are connected to gas coupling devices (108, 110) for re-coupling the gases into the transport path of the welding wire (4, 5). Welding device according to Claim 9 , characterized in that the gas coupling devices (108, 110) are components of the alignment device (14), in particular the receiving part (16), or the feed device (100) or the allocation device (250). Welding device according to one of the preceding claims, characterized in that a plurality of source devices (90, 92) are provided, each source device (90, 92) comprising a power source, working gas source and welding wire source, each source device (90, 92) having a connection device (91, 93) is connected to a supply device. Orbital welding robot (500) having at least one welding device according to one of the preceding claims, wherein at least part of the welding device, in particular the feed device and / or part of the line element, in particular the allocation device, runs in sections in a hollow shaft of the orbital welding robot (500) or the nozzle holder, in particular the current contact nozzle, is pivotable. Method for operating a welding device according to one of the Claims 1 - 11 or to operate an orbital welding robot (500) according to Claim 12 , at least comprising the steps of: feeding a first welding wire in the working direction and a first working gas from a first source device (90) to a current contact nozzle (2), moving the first welding wire (4) against the working direction to release a welding wire path, in particular in an area between the supply device (100) and the current contact nozzle (2), supply of a second welding wire (5) in the working direction and a second working gas from a second source device (92) to the current contact nozzle (2) via the same welding wire path, in particular in an area between the supply device (100) ) and the current contact nozzle (2), wherein the first welding wire (4) and the second welding wire (5) are conveyed on separate welding wire paths from the source devices (90, 92) to the feed device (100). Procedure according to Claim 13 , characterized in that the respectively supplied working gas is fed from the respective source device (90, 92) together with the respective welding wire (4, 5) via a respective connecting device (91, 93) to a separating device (300), at least predominantly over time and preferably always only from exactly one source device (90, 92) working gas and welding wire (4, 5) are supplied to the separating device (300), the separating device (300) guiding the working gas into a gas discharge device (226, 228) and opening the welding wire widens a welding wire path that is separate from the gas discharge device (226, 228). Procedure according to Claim 14 , characterized in that the gas discharge device (226, 228) is connected to the feed device (100) and the working gas guided via the gas discharge device (226, 228) through the feed device (100) to flow around the welding wire (100) conveyed by the feed device (100). 4, 5) is coupled into the transport path of the welding wire (4, 5).

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