EP3684542A2 - Corps de brûleur pour assemblage thermique - Google Patents

Corps de brûleur pour assemblage thermique

Info

Publication number
EP3684542A2
EP3684542A2 EP18765877.8A EP18765877A EP3684542A2 EP 3684542 A2 EP3684542 A2 EP 3684542A2 EP 18765877 A EP18765877 A EP 18765877A EP 3684542 A2 EP3684542 A2 EP 3684542A2
Authority
EP
European Patent Office
Prior art keywords
burner
electrode
nozzle
workpiece
burner body
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.)
Withdrawn
Application number
EP18765877.8A
Other languages
German (de)
English (en)
Inventor
Sascha Rose
Eckhard KRÄMER
Ralf Schäfer
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.)
Alexander Binzel Schweisstechnik GmbH and Co KG
Original Assignee
Alexander Binzel Schweisstechnik GmbH and Co KG
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 Alexander Binzel Schweisstechnik GmbH and Co KG filed Critical Alexander Binzel Schweisstechnik GmbH and Co KG
Publication of EP3684542A2 publication Critical patent/EP3684542A2/fr
Withdrawn legal-status Critical Current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
    • B23K37/00—Auxiliary devices or processes, not specially adapted for a procedure covered by only one of the other main groups of this subclass
    • B23K37/02—Carriages for supporting the welding or cutting element
    • B23K37/0211—Carriages for supporting the welding or cutting element travelling on a guide member, e.g. rail, track
    • 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
    • B23K9/24—Features related to electrodes
    • B23K9/28—Supporting devices for electrodes
    • B23K9/29—Supporting devices adapted for making use of shielding means
    • B23K9/291—Supporting devices adapted for making use of shielding means the shielding means being a gas
    • B23K9/296—Supporting devices adapted for making use of shielding means the shielding means being a gas using non-consumable electrodes
    • 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
    • B23K1/00—Soldering, e.g. brazing, or unsoldering
    • 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
    • B23K37/00—Auxiliary devices or processes, not specially adapted for a procedure covered by only one of the other main groups of this subclass
    • B23K37/02—Carriages for supporting the welding or cutting element
    • B23K37/0241—Attachments between the welding or cutting element and the carriage
    • 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
    • B23K9/12—Automatic feeding or moving of electrodes or work for spot or seam welding or cutting
    • B23K9/127—Means for tracking lines during arc welding or cutting
    • B23K9/1272—Geometry oriented, e.g. beam optical trading
    • B23K9/1278—Using mechanical means
    • 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
    • B23K9/16—Arc welding or cutting making use of shielding gas
    • B23K9/167—Arc welding or cutting making use of shielding gas and of a non-consumable electrode
    • 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
    • B23K9/24—Features related to electrodes
    • B23K9/28—Supporting devices for electrodes
    • 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
    • B23K9/24—Features related to electrodes
    • B23K9/28—Supporting devices for electrodes
    • B23K9/285—Cooled electrode holders
    • 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
    • B23K9/32—Accessories
    • 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
    • B23K9/32—Accessories
    • B23K9/325—Devices for supplying or evacuating shielding gas
    • 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
    • B23K37/00—Auxiliary devices or processes, not specially adapted for a procedure covered by only one of the other main groups of this subclass
    • B23K37/02—Carriages for supporting the welding or cutting element
    • B23K37/0247—Driving means
    • 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
    • B23K9/16—Arc welding or cutting making use of shielding gas
    • B23K9/164—Arc welding or cutting making use of shielding gas making use of a moving fluid
    • 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
    • B23K9/32—Accessories
    • B23K9/323—Combined coupling means, e.g. gas, electricity, water or the like

Definitions

  • the invention relates to a burner body and to a burner with such a burner body and to a method for thermal joining of at least one
  • Electrode stands “MIG” for “metal inert gas” and “MAG” for “metal active gas”.
  • MIG metal inert gas
  • MAG metal active gas
  • Tungsten Inert Gas For gas assisted arc welding with non-consumable electrode (WSG), “TIG” stands for "Tungsten Inert Gas”.
  • WSG non-consumable electrode
  • Tungsten Inert Gas The welding devices according to the invention can be designed as a machine-guided welding torch.
  • Arc welding devices generate an arc between the workpiece and a consumable or non-consumable welding electrode to melt the weld metal.
  • the weld metal as well as the welding point are protected by an inert gas flow in relation to the atmospheric gases,
  • the welding electrode is provided on a burner body of a welding torch, which is connected to an arc welding device.
  • Burner body usually contains a group of internal,
  • the protective gas flow flows around the welding electrode, the arc, the
  • a gas nozzle directs the protective gas flow to the front end of the burner head, where the protective gas stream emerges from the burner head approximately annularly around the welding electrode.
  • Burner head is required to protect the components used from thermal material failure. For this the burner head becomes active with a
  • Refrigerant cooled which flows through the burner head and thereby removes the absorbed from the welding process and unwanted heat.
  • deionized water with additions of ethanol or propanol for the purpose of antifreeze protection can be used as the coolant.
  • brazing is also used to connect sheet metal components. Unlike welding, not the workpiece, but only the filler material is melted. The reason for this is that during soldering, two edges are joined together by the solder as a filler material.
  • Arc brazing processes can be divided into metal inert gas (MSG-L) and tungsten inert gas (WSG-L) brazing processes.
  • MIG-L metal inert gas
  • WSG-L tungsten inert gas
  • MIG / MAG arc soldering is largely identical to MIG / MAG welding with wire-shaped filler.
  • TIG soldering the wire-shaped additional material is conveyed laterally into the arc, either manually or mechanized.
  • the filler material can be fed without power as a cold wire or current charged as a hot wire. With hot wire, higher deposition rates are achieved, but the arc is affected by the extra magnetic field.
  • the arc-brazing is used on surface-finished or uncoated thin sheets, as among other things by the lower melting temperature of the solder compared to welding, a lower thermal stress on the components is achieved, and the coating is less damaged. During arc brazing, there is no significant melting of the base material.
  • arc soldering processes are generally used on uncoated and metallically coated sheets of unalloyed and low-alloyed steel in the thickness range up to a maximum of about 3 mm.
  • arc soldering can usually argon 11 or Ar mixtures with
  • Admixtures of CO 2 , O 2 or H 2 according to DIN ISO 14175 are used.
  • TIG soldering can use commercially available TIG torches.
  • an elongated heat sink located within the housing cylinder is provided with an elongated cavity located therein at the upper end side of the heat sink and an inner lid closure thereon through which the lines for the coolant pass.
  • a recessed threaded bore is provided along the burner head axis, which has a passportable and lockable in the threaded hole electrode with a cylindrical and provided with a conical tip tungsten electrodes, whose
  • Tip end is arranged at a predetermined distance to the lower end side of the heat sink.
  • the welding torch has a gas nozzle communicating with the elongated heat sink with the involvement of longitudinal channels, which surrounds the heat sink and the electrode.
  • EP 2 894 005 A1 disclose an electrode and a welding torch arrangement with such an electrode.
  • the electrode comprises an elongated body, the one
  • the welding torch has a mounted on a mounting plate adjustment rail and a relative to the adjusting track displaceable adjusting body, a Burner body, an electrode holder with a longitudinal axis and a retaining nut, which secures the electrode in the electrode holder.
  • the electrode holder nut contacts the angled surface of the tip end portion.
  • a plasma welding torch which has a chamber in which a non-consumable electrode connected to a DC power source is arranged.
  • the chamber is provided with an exit channel and an entrance channel for a plasma gas.
  • the electrode has a free end portion.
  • the tip of the electrode is flattened at its free end and protrudes from the free end face of the mouth part.
  • the mouth part in the region of its head further channels, which surround the cone-shaped outlet channel concentric.
  • the outlet channel is surrounded by other channels provided for guiding cold plasma gas.
  • the plasma gas flowing out of the outlet channel is intended to hold the plasma jet outside the outlet channel of the burner or
  • the plasma gas flows essentially along a conical jacket having a specific wall thickness.
  • a disadvantage of the known burners are the use of special electrodes, the limited service life of the electrode and the low maintenance by open cooling circuits and complicated electrode settings.
  • the present invention seeks to provide an improved torch body, which has a simple, inexpensive and compact design and at the same time protection of the electrode from zinc vapor to provide a concentrated arc for short
  • This object is achieved with a burner body for thermal joining of at least one workpiece, in particular for arc welding or
  • the object is achieved by a joining device according to claim 18.
  • a burner body for thermally joining at least one workpiece, in particular for arc welding or arc soldering, with a non-consumable electrode, in particular a tungsten electrode, arranged in the burner body for generating an arc between the electrode and the workpiece.
  • a non-consumable electrode in particular a tungsten electrode
  • the front nozzle has at least one bypass duct for dividing the protective gas flow into a main gas flow and a secondary gas flow. Furthermore, the secondary gas stream surrounds the main gas stream according to the invention at the gas outlet ring.
  • the shielding gas may comprise argon or helium or a mixture of both as the main constituent.
  • the invention is characterized in that it is achieved by the combination of minimum size and two-part gas flow, that in particular compared to other types of burners, such as plasma torches additional space for a second gas flow in the burner and the insulation for a further electrical potential can be saved.
  • the use of a conventional TIG power source is possible, whereby the cost efficiency of the burner device is further increased.
  • the side gas flow provided in addition to the main gas flow allows a large heat-conducting cross-section of the front nozzle in comparison to the burner bodies known from the prior art. By the bypass channels, the area covered with the protective gas flow area is increased.
  • the front nozzle therefore not only provides a protective function for the electrode against zinc evaporation, but also ensures good cooling in the process area.
  • a plurality of bypass channels are circumferentially arranged on the front nozzle, preferably in an outwardly directed orifice angle of 10 ° to 30 ° relative to the longitudinal axis of the front nozzle.
  • the electrode forms the workpiece facing distal end of the burner body or approximately flush with this. As a result, an optimal ignition of the arc is achieved.
  • the front nozzle may form the distal end of the torch body facing the workpiece and the electrode may be recessed from that end, in particular by about 0.5 to 1.5 mm.
  • the electrode has a substantially cylindrical portion and / or a
  • Electrode may have a Anspitzwinkel of 20 ° to 45 °, preferably 30 °.
  • the workpiece facing the end of the electrode may be a truncated cone plateau with a plateau diameter of about 0.5 to 1.5 mm, preferably 1.0 mm. Since the arc between the workpiece and the electrode is formed, the workpiece facing the geometric shape of the electrode tip for the dimension and shape of the arc and also for the ignition of the
  • a plateau is provided at this end of the electrode, so that in this region the arc extends substantially perpendicularly and rectilinearly from electrode to workpiece.
  • the effect of the arc is thus further optimized in the process area.
  • Burner body provided, in particular, the heat sink on cooling channels for guiding a coolant.
  • An active cooling of the burner head is
  • the burner head is actively cooled with coolant, which flows through the burner head and thereby removes the heat absorbed from the welding process and unwanted heat.
  • coolant for example, deionized water with additions of ethanol or propanol may be used for the purpose of antifreeze.
  • the front nozzle is constructed in two parts.
  • the front nozzle 3 is designed in one piece.
  • the front nozzle has a
  • the center nozzle can be made of copper or a copper alloy for a very high heat conduction and / or the gas nozzle made of brass or a brass alloy for a high heat conduction at the same time high strength exist.
  • the gas nozzle may also be made of ceramic.
  • an internal electrical insulator isolates the front nozzle from the electrode.
  • Arc away from the welding electrode can be used in conventional
  • Arc welding devices result in the arc on the gas nozzle or the torch neck protective tube and melts this. In this way, the component concerned can prematurely unusable and must be replaced.
  • Center nozzle and the gas nozzle formed an annular gap for equalization and management of the secondary gas stream.
  • the gas nozzle at least partially overlaps the center nozzle at the end of the outlet opening of the bypass ducts to form the annular gap over the circumference. This ensures a further improved shielding gas coverage in the process area and for the seam. This further enhances the protective function of the electrode against zinc evaporation.
  • the center nozzle has the bypass channels. This makes the front area of the burner body more compact. Because an optimal cooling of the burner body is by the
  • Center nozzle has an outlet opening with a cross section of about 5 to 22 mm 2 , in particular about 12.5 to 15.9 mm 2 , wherein the cross section of
  • Outlet opening is less than or equal to the cross-section of the electrode in the region of the cylindrical portion of the electrode, so that a uniform
  • the sum of the cross sections of the bypass ducts of the center nozzle is about 12 to 22 mm 2 , in particular about 20 mm 2 , so that a uniform distribution of the volume flows between the secondary gas flow and the
  • the gas nozzle is designed for coupling to the center nozzle as a fastening nut.
  • the assembly of the nozzle is significantly simplified.
  • the replacement of the center nozzle is particularly easy. Because the as Fixing nut or cap nut acting gas nozzle, which may have an internal thread is slipped over the center nozzle in a change and connected by means of a corresponding external thread of the burner body with this.
  • the gas nozzle is loosened and removed by means of thread, so that the exchanged center nozzle can be easily removed from the burner body.
  • the annular surface of the center nozzle with additional
  • the gas nozzle is screwed back onto the thread of the torch body and fastened.
  • the center nozzle is pressed into the conical seat in the burner body and achieved optimum heat transfer.
  • a burner is provided with a burner body according to the invention.
  • a protective gas flow is provided, which flows out of a potential-free front nozzle.
  • the protective gas stream is split into a main gas stream directly surrounding the electrode and a secondary gas stream emerging at the front end of the burner body, wherein the
  • a joining device for the thermal joining of at least one workpiece in particular for
  • the joining device has a machine-guided burner for generating an arc between a non-consumable electrode arranged therein, in particular a tungsten electrode, and the workpiece. Furthermore, the joining device may have a previously described burner body.
  • the joining device according to the invention has a
  • Burner replacement device to replace the burner against a new burner and a tactile seam guide system.
  • a position transducer is moveable relative to the workpiece and spaced from the burner, the burner coupled to the tactile seam tracking system. According to the invention, the burner is in a movement relative to the
  • Position sensor in at least one working position for thermal joining of the workpiece and a change position for changing the burner against a new burner can be brought.
  • the torch may be replaced, though possibly only the worn or defective electrode and / or the nozzle of the torch
  • the heat-induced softening of the filler material is to keep the free wire end as short as possible, whereby the usually not movably arranged position sensor of the thermal joining device is located very close to the front end of the burner. As a rule, this distance is only a few millimeters. For this reason, a manual or automated torch change may result in a collision between the torch and the position sensor. Since the position sensor can have an outlet opening, through which an additional material for welding or soldering can be brought directly into the vicinity of the burner head, it can also lead to collisions between the burner and the filler material, for example by a not completely retracted additional wire. These collisions could cause damage to the torch and / or tactile seaming.
  • a magazine may be provided which includes a plurality of new burners which may be accessed, as needed, by an automated or manual method of changing a defective or worn burner, for example by a gripper arm which couples to the burner via a docking device and transport it in this way.
  • the tactile seam guiding system can also be equipped with another
  • Inert gas supply to be equipped in the direction of the burner.
  • the instantaneous position of the sensor attached to the front end of the pickup, which moves along the joint of the workpieces to be connected can be passed on via a control unit to actuators which control the movement of the joining device.
  • the joining device itself may have additional actuators, which can realize a more precise movement of the tactile seam guiding system compared to a robot control.
  • the tactile seam guiding system moves along a seam to be welded or soldered.
  • the burner moves and "follows" the seam guiding system, thus defining a given working direction of the burner, at which the burner end
  • the distance between the burner and seam guide system, in particular along the working direction, increased by the burner is moved against the working direction of the seam guide system away.
  • the burner to be replaced can be removed and replaced by a new burner.
  • Robot which decouple the spent burner to change from the welding energy, in particular from the lines for the
  • a first advantageous embodiment of the invention is a movable
  • Carriage provided for positioning the coupled to the carriage burner for the change of the burner against a new burner. To avoid the collision between burner and position sensor or tactile
  • Seam guide system is the burner by means of a carriage in the direction
  • Supply device in the change process of the burner is a hindrance and could cause collisions and damage to the burner and / or the tactile seam guide due to the very short distance from the burner.
  • the carriage is operated electrically, pneumatically or hydraulically, so that an exact control of the carriage is ensured.
  • the carriage has a burner holder for holding the burner and / or a coupling device for feeding the burner Welding energy.
  • This welding energy includes, but is not limited to, electrical energy and supply lines for the coolant and the coolant
  • the burner is locked at least in the working position.
  • the respective positions of the burner must be precisely approached by the controller.
  • To avoid inaccuracies of the burner is locked at least in the working position.
  • the burner in other positions, such as the change position can be locked.
  • the burner is movable only between the working position and the change position and vice versa. This also further increases the accuracy of the joining device. In addition, the clock frequency of the device is also increased. Because the fact that only two positions are approached, malfunction and thus downtime of the device can be reduced. These two positions can be configured as stable positions.
  • Seam guide system in particular arranged on the position sensor outlet opening through which the filler material for arc brazing or arc welding can be dispensed.
  • the filler material may be, for example, welding wire or solder wire.
  • the seam guiding system thus fulfills a dual function. First, it serves as an edition for the
  • a distal end of the suture guide system is located immediately adjacent the front end of the burner.
  • 1 shows a burner body for the thermal joining of at least one
  • FIG. 2 detailed views of the burner body in plan view (a), side view
  • Figure 3 detail views of the center nozzle in plan view (a), side view
  • FIG. 4 detailed views of the gas nozzle in plan view (a), side view (b) and as a sectional illustration (c),
  • Figure 5a is a schematic representation of a joining device in
  • Figure 5b is a schematic representation of a joining device in
  • Figure 6 is a schematic representation of the joining device in change position
  • Figure 7 is a schematic representation of the joining device with removed
  • a torch body 10 for thermal joining of at least one workpiece 11, in particular for arc welding or arc brazing, with a non-consumable electrode 1, in particular a tungsten electrode, arranged in the torch body 10, is used to generate an arc between the electrode 1 and the workpiece 1 1 forth.
  • the electrode 1 closes in the vorl hegenden embodiment of the invention approximately flush with the burner body 1 0 from, d. H . It can also be provided in the context of the invention that the electrode 1, the workpiece 1 1 facing the distal end 9 of the burner body 1 0 forms and on the other components of the Torch body 1 0 to the front end 1 8 protrudes. Alternatively, it would also be conceivable for at least part of a nozzle to form the distal end 9 of the burner body 10 facing the workpiece 11 and the electrode 1 to protrude from this end 9, in particular by approximately 0.5 to 1.5 mm.
  • the electrode 1 may have a substantially cylindrical portion 21 and / or a workpiece-facing pointed end 22.
  • a front nozzle 3 which is electrically isolated from the electrode 1 by means of an inner insulator 8 or potential-free is for discharging a nozzle Protective gas stream provided from a gas outlet 1 3 of the burner.
  • the inner insulator 8 may for example consist of a ceramic material or include this. It can be seen further from FIG. 1 that an outer insulation 1 9 is provided in order to provide for the
  • Outside insulation 1 9 prevents the arc from migrating away from the electrode 1.
  • the front nozzle 3 has at least one bypass duct 5 for dividing the protective gas flow into a main gas flow 14 and a secondary gas flow 15. Furthermore, the secondary gas stream 1 5 surrounds the main gas stream 14 at the gas outlet 1 3 annular.
  • the shielding gas may comprise argon or helium or a combination of both as the main constituent. In addition, small admixtures of oxygen, carbon dioxide and / or hydrogen as minor components are possible.
  • a plurality of bypass ducts 5 are arranged peripherally of the front nozzle 3, preferably in an outwardly directed orifice angle of 1 0 ° to 30 ° relative to the longitudinal axis 20 of the front nozzle 3.
  • a cooling body 6 is shown for cooling the burner body 1 0, which in this case has cooling channels 1 2 for guiding a coolant. It can also be provided that a part of the protective gas flow for cooling the
  • Burner body 1 0 is passed through these channels 1 2.
  • Figures 1 and 2 show that the front nozzle 3 is constructed in two parts in the present embodiment and has a center nozzle 2 and a gas nozzle 4. In the context of the invention, it is also conceivable that the front nozzle 3 in one piece
  • FIGS. 3 a to 3 c show detailed views of the center nozzle 2.
  • Figure 3a shows a plan view
  • Figure 3b is a side view
  • FIGS. 4 a to 4 c Analogous views can be taken from FIGS. 4 a to 4 c for the gas nozzle 4.
  • the gas nozzle 4 overlaps the center nozzle 2 at the end of the outer outlet opening 16 of the bypass ducts 5 at least partially over the circumference to form the annular gap 17.
  • the exit of the protective gas from the annular gap 1 7 takes place at the center nozzle 2.
  • the bypass channels 5 open into the outer outlet openings 1 6. Die
  • Center nozzle 2 has an annular surface 23 for the positive fixing of the center nozzle 2 in the axial direction on the burner body 1 0.
  • the annular surface 23 may additionally be provided with key surfaces for better release from the conical press fit of the burner body.
  • the individual discrete bypass ducts 5 open approximately at the level of the annular surface 23 in the annular gap 1 7 and exit from this towards the workpiece 1 1.
  • the center nozzle 2 may be made of copper or a copper alloy and / or the gas nozzle 4 made of brass or a brass alloy.
  • FIGS. 4a to 4c further show that the gas nozzle 4 is intended for
  • Coupling to the center nozzle 2 may be formed as a fastening nut.
  • the center nozzle 2 thus fulfills a dual function by forming the annular gap 1 7 together with the gas nozzle 4 on the one hand and the other as
  • the outlet opening 7 of the center nozzle 2 may have a diameter of about 1 3 to 20 mm 2 , in particular about 1 6 mm 2 .
  • the sum of the cross sections of the bypass ducts 5 of the gas nozzle 4 may be about 18 to 22 mm 2 , in particular about 20 mm 2 . In the example given, for example, eight are
  • bypass ducts 5 are provided, but this number may vary.
  • the ratio of the diameter of the outlet opening 7 to the sum of the cross sections of the bypass channels 5 may be similar, in particular approximately 4: 5.
  • FIGS. 5a to 7 show a joining device 100 with a machine-guided burner 200, 200 ' , for example with a burner body 10 described above, for generating an arc between a non-consumable electrode 1, in particular a tungsten electrode, arranged therein and the workpiece 1 1.
  • a burner changing device 300 is provided for replacing the burner 200 with a new burner 200 ' .
  • a changeable burner 200 may have an exchange interface.
  • a tactile seam guiding system 900 has a position sensor 901, which is arranged movably with respect to the workpiece 11 and at a distance from the burner 200.
  • the position sensor 901 determines the instantaneous position of a measuring sensor attached to the front end of the position sensor 901, which moves along the joint of the workpieces 11 to be connected.
  • the burner 200 is in a movement relative to the position sensor 901 in at least one working position 500 for thermal joining of
  • Joining device 1 00 a distal end 903 of the usually not bewegl I arranged Positionsauf choirs 901 very close, d. H . only a few millimeters, arranged at the front end 201 of the burner 200. For this reason, it can be at a burner change to a Koll ision between burner 200, 200 ' and
  • Position sensor 901 come.
  • the position sensor 901 may include a feeder 904 having a
  • Outlet opening 902 through which a filler 700 for
  • the filler material 700 may be, for example, welding wire or solder wire.
  • the wire can be potential free as cold wire or
  • the tactile seam guiding system 900 thus fulfills a dual function. On the one hand, it has the position sensor 901 for determining the respective position of the burner 200 relative to the seam to be welded or soldered. On the other hand, the tactile seam guiding system 900 also provides the feeding device 904 for guiding the filler material.
  • Figure 5a shows the joining device in a side view
  • Figure 5b in a further side view.
  • the tactile seam guiding system 900 moves along a seam to be welded or soldered.
  • the seam guide system 900 moves and runs after the seam guide system 900, so that thereby a predetermined working direction of the burner 200 is defined.
  • Working direction increased by the burner 200 is moved against the working direction away from the tactile seam guiding system 900.
  • FIG. 7 shows the device 100 with removed burner 200, 200 ' .
  • Means for example gripping arms of a robot, can be provided which decouple the consumed burner 200 ' from the welding energy, in particular from the conduits for the protective gas, the electrical energy and the coolant. Then, the burner 200 'is moved away from the tactile seam guiding system 900, for example, approximately parallel to the longitudinal direction of the burner 200 in the direction of a changer, not shown, so that it closes without colliding with the
  • Suture guide system 900 can be removed.
  • Suture tracking system 900 can be realized, a movable carriage 600 for positioning the coupled to the carriage 600 burner 200 for the replacement of the burner 200 to be replaced against a new burner 200 'is provided.
  • FIGS. 5a to 7 show such a burner.
  • the burner 200 is moved by means of a slide 600 in the direction of the changer and thus of the
  • Feeder 904 moves away.
  • the carriage 600 is necessary because the
  • Burner 200 are arranged so that this feeder 904 in
  • the carriage 600 can be operated electrically, pneumatically or hydraulically.
  • the carriage 600 has a burner holder 601 for holding the burner 200 and / or a coupling device gas 602 for coupling the conduit for guiding the protective gas through the burner body 10 and / or one
  • Coupling device 603 for coupling the lines for the leadership of
  • the burner holder 601 ensures easy unlocking and locking, so that the change of the burner 200, 200 ' can be implemented quickly and safely.
  • the burner 200 can be moved between the working position 500 and the changing position 400 and vice versa. It would also be kbar that the burner 200 is moved exclusively between these two positions. For a particularly high accuracy of the welding or soldering processes can be achieved, the respective positions of the burner 200 must be precisely approached by the controller. To avoid inaccuracies, the burner 200 can be locked at least in the working position 500 and / or the change position 400. LIST OF REFERENCE NUMBERS
  • Coupling device coolant and welding energy

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  • Engineering & Computer Science (AREA)
  • Physics & Mathematics (AREA)
  • Mechanical Engineering (AREA)
  • Plasma & Fusion (AREA)
  • Optics & Photonics (AREA)
  • Geometry (AREA)
  • Arc Welding In General (AREA)

Abstract

L'invention concerne un corps de brûleur pour réaliser l'assemblage thermique d'au moins une pièce, en particulier pour le soudage ou le brasage à l'arc, ledit corps de brûleur comportant une électrode non fusible, disposée dans ledit corps de brûleur en particulier une électrode en tungstène, pour produire un arc électrique entre l'électrode et la pièce. Ledit corps de brûleur présente un ajutage frontal exempt de potentiel pour assurer la sortie d'un flux de gaz de protection hors d'une sortie de gaz. Un conduit de courant secondaire permet de séparer le flux de gaz de protection en un flux de gaz principal et en un flux de gaz secondaire, le flux de gaz secondaire entourant en anneau le flux de gaz principal à la sortie de gaz.
EP18765877.8A 2017-09-19 2018-09-07 Corps de brûleur pour assemblage thermique Withdrawn EP3684542A2 (fr)

Applications Claiming Priority (2)

Application Number Priority Date Filing Date Title
DE102017121722.3A DE102017121722B4 (de) 2017-09-19 2017-09-19 Brennerkörper zum thermischen Fügen, Brenner mit Brennerkörper und Fügevorrichtung
PCT/EP2018/074096 WO2019057517A2 (fr) 2017-09-19 2018-09-07 Corps de brûleur pour assemblage thermique

Publications (1)

Publication Number Publication Date
EP3684542A2 true EP3684542A2 (fr) 2020-07-29

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ID=63524288

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Application Number Title Priority Date Filing Date
EP18765877.8A Withdrawn EP3684542A2 (fr) 2017-09-19 2018-09-07 Corps de brûleur pour assemblage thermique

Country Status (7)

Country Link
US (1) US20210078115A1 (fr)
EP (1) EP3684542A2 (fr)
JP (1) JP2020534160A (fr)
KR (1) KR20200055710A (fr)
CN (1) CN111107955A (fr)
DE (1) DE102017121722B4 (fr)
WO (1) WO2019057517A2 (fr)

Families Citing this family (3)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US11891346B2 (en) 2019-10-04 2024-02-06 Milliken & Company Horticulture additive
DE102020132821B4 (de) * 2020-12-09 2023-03-16 Alexander Binzel Schweisstechnik Gmbh & Co. Kg Brennerhals zum thermischen Fügen wenigstens eines Werkstücks, Brenner mit Brennerhals und Schweißvorrichtung
EP4112218A1 (fr) * 2021-06-30 2023-01-04 FRONIUS INTERNATIONAL GmbH Système de refroidissement de composants de soudage avec un dispositif de déionisation du liquide de refroidissement, et composant de soudage doté d'un tel système de refroidissement de composants de soudage

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DE4207114C2 (de) 1992-03-06 2003-10-02 Binzel Alexander Gmbh Co Kg Werkzeug-Wechselvorrichtung
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Also Published As

Publication number Publication date
WO2019057517A2 (fr) 2019-03-28
WO2019057517A3 (fr) 2019-06-06
US20210078115A1 (en) 2021-03-18
DE102017121722A1 (de) 2019-03-21
DE102017121722B4 (de) 2024-02-22
KR20200055710A (ko) 2020-05-21
JP2020534160A (ja) 2020-11-26
CN111107955A (zh) 2020-05-05

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