The Laser Knife The Laser Knife consists of a force- and displacement-controlled hold-down device that brings the two surfaces to be soldered together in a defined way, and a laser that enables contact-free temperature input. The temperature-controlled laser is equipped with an integrated pyrometer and a camera, guaranteeing optimum process stability, quality and traceability for the user. The Laser Knife enables optimum results when soldering flexible foils, cable strands, ribbon cables and battery pins. The soldering process is characterised by high-quality results and high reproducibility, combined with high energy efficiency and process speed. Especially in high-volume production, the Laser Knife enables cycle time-optimised soldering for various end products. Depending on the product and application, extremely short cycle times of up to ≥0.5 seconds per solder joint are possible.
To enable further cycle time optimisation, the Laser Knife can also be equipped with a Galvo scanner To enable further cycle time optimisation, the Laser Knife can also be combined with a Galvo scanner. A Galvo scanner is a high-precision, dynamic beam guidance system that can be used in laser processes. The technology enables extremely fast and flexible positioning of the laser beam within the scan field. The scanner optics work with two high-precision mirrors that deflect the laser beam in the X and Y directions. The mirrors are mounted on galvanometer motors that can be controlled very quickly and precisely, allowing the laser beam to be moved to a new position within milliseconds. The size of the scan field depends on the focal lengths of the collimation and f-theta lenses used. Eutect uses a scan field of 140 x 140 mm as standard. The combination of high precision, fast process speed and flexible integration enables time-optimised and reliable soldering processes.
The laser, including galvo scanner, can massively accelerate the soldering process without losing reproducibility and result quality. Depending on the component, the original version of the Laser Knife is already 10 times faster than, for example, the Thermode soldering processThe laser, including the galvo scanner, can massively accelerate the soldering process without compromising reproducibility and result quality. Depending on the component, the Laser Knife in its original version is already 10 times faster than the thermode soldering process, for example. A 70% reduction in energy consumption can also be achieved. Furthermore, no product-specific thermode moulds or Kapton belts are required. There is also no need to modify the process head or production plant due to a change in production. The Laser Knife can be converted for new or additional products with little effort, giving the customer maximum plant utilisation. In addition, the thermode has limitations in terms of geometry due to technical constraints. This restriction is also no longer an issue when using the Laser Knife. The contactless soldering of surfaces and the elimination of thermode wear also reduce maintenance and service costs for the entire module.
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