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Careful attention must be given to the cable connection points in the secondary circuit of resistance welding equipment. Bolted cable connection points tend to deteriorate over time, leading to increased contact resistance and energy losses. When worn secondary circuit components, such as connecting cables, need to be replaced, extensive machining of the old cable connection points is necessary. This re-work process is time-consuming, and its quality depends on the expertise of the technician. Insufficient machining can result in undefined contact resistances, higher energy losses, and a shortened service life.
To address these challenges, the modular and scalable SpotFix connect system was specifically developed for use in the secondary circuit of resistance welding equipment, particularly X-guns. This cooled connector system eliminates the drawbacks of screw connections. It ensures consistently reliable contact conditions and optimal system availability.
Round transformer connection for maximum space saving
Gun arm connection
Transformer connection with a 25° angled cable connection
Straight transformer connection with 0° cable routing
Connection cable with a 600 mm² cross-section. As an option also 2 x 400 mm² possible.
Stäubli also offers pluggable solutions for the primary circuit of spot welding guns since 1990, both in round and flat shape with WeldFix and RobiFix connectors.
Connector for the secondary circuit of resistance welding devices
Thanks to Stäubli's reliable MULTILAM contact technology, it is now possible to implement pluggable high-current applications while maintaining consistently low contact resistances. This enables quick and safe replacement of cables in a resistance welding machine without requiring special training.
Stäubli's expertise positions us as a first mover in offering a pluggable connection concept for resistance welding equipment, aiming to minimize downtimes and reduce the total cost of ownership. This innovative approach not only provides solutions for traditional setups, but also opens up new possibilities for design methods and applications.
SpotFix |
|
|---|---|
Pin/Socket diameter | 32 mm |
Cable cross section | 600 mm² |
Total contact resistance | < 30 µΩ |
Rated voltage | AC 25 V / DC 60 V |
Rated current max. | 6.5 kA |
Temperature equilibrium with 250 mm cable | 70 °C at IRMS = 4 kA (6 l/min, Τamb = 20 °C) |
Ambient temperature | Max. 40 °C |
Cooling concept | Water cooling in connector (dry coupling) |
Contact material | Cu, silver plated |
| No wetting-disturbing substances | Silicone-free |
| Transformer connector | MF100 according to customer standard, others possible |
