Band for protecting electrodes of a spot-welding gun
A technology for protecting points and spot welding guns, which is applied in the field of spot welding devices and protecting the electrode belts of spot welding guns, so as to achieve the effect of improving service life and ensuring welding quality.
Inactive Publication Date: 2009-03-04
FRONIUS INTERNATIONAL GMBH
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- Abstract
- Description
- Claims
- Application Information
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Problems solved by technology
[0006] A negative aspect of this technical solution is that, due to the small thickness of the individual layers, they do not produce sufficient contrast on the base material to detect and delineate mirror-reversed imprints of solder joints
Method used
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Embodiment Construction
[0032] At the outset, like reference numerals have been assigned to like parts of the example embodiment.
[0033] In Fig. 1, a spot welding device 1 is shown in the form of a welding torch 2 for resistance welding of metal sheets 3, 4 or components, which welding torch is preferably used in robotic applications. Preferably, the spot welding device 1 or spot welding gun has a spot welding tool 5 and a coiling unit (not shown in the figure) for coiling and unwinding a strip 7 or sheet metal that rests against the electrode 6 in a transverse manner. ). The winding unit is arranged directly on the welding torch 2 or outside the welding torch 2 .
[0034] The strip 7 can be guided around the electrode 6 in various ways, an illustrative embodiment will be briefly discussed below. In this exemplary embodiment, it is not necessary to use a spot welding gun 5, only the electrodes 6, wherein the other components for guiding, winding and unwinding the belt 7 are separate units and are...
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Abstract
The invention relates to a band (7) for protecting the electrodes (6) of a spot welding gun for welding metal sheets (3, 4), comprising a backing material (24), wherein at least one electrically conductive layer (16) is arranged on the side (15) facing the metal sheets (3, 4). To provide such a band (7) for the welding of aluminium or aluminium alloys, with which band the contrast of the impression (14) of the weld spot (13) can be increased and the electrode (6) optimally protected, at least two layers (16, 20) are arranged on the sheet side (15) of the backing material (24), wherein the outermost layer (16) is formed from tin and the layer (20) arranged underneath is formed from nickel phosphorous. Furthermore, at least one adhesive layer (18, 26, 27) for the layers (16, 20) underneath can be arranged on the backing material (24).
Description
technical field [0001] The invention relates to a band for protecting the electrodes of a spot welding torch, or a spot welding device for welding metal sheets made of aluminum and / or aluminum alloys, as claimed in claims 1, 6 and 8 described in the preamble. [0002] Likewise, the invention also relates to a strip for protecting the electrodes of a spot welding gun for welding metal sheets made of steel and / or steel alloys, as stated in the preambles of claims 10 and 11 . Background technique [0003] WO 2004 / 022278 A1 describes a method for monitoring the quality of spot welding, in particular for robotic applications. At least two electrodes are pressed together for charging, with mutually welded metal plates placed in between. Here, the solder joints are evaluated by an evaluation device, in particular an optical image detection device. A strip is inserted between the electrode and / or the electrode cap and the metal plate, which strip protects the electrode from wear....
Claims
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IPC IPC(8): B23K11/11B23K11/25B23K11/30
CPCB23K11/115Y10T428/12771Y10T428/12535B23K2203/10B23K2203/04B23K2103/04B23K2103/10
Inventor 马里奥·洛伊佩特斯贝戈尔
Owner FRONIUS INTERNATIONAL GMBH