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The SWIRL glue gun is part of the GRACO line of products. The nozzle is powered by a small brushless motor, with a variable controllable speed of 0 to 24,000 rpm.

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frame sealing

The above-mentioned SWIRL system allows application of sealants at a controllable thickness of 15-30 mm to seal lap weldings.

Comau Robot

On behalf of GLFinishing, I coordinated a Comau test facility in Torino Borgaretto, Italy. I was responsible for planning test scenarios with the objective of applying high-viscosity products for automotive clients such as Fiat, Alfa Romeo, Mercedes, Renault. The test system consisted of a Comau robot operating in conjunction with a GRACO-designed delivery system. The delivery system had the following specifications: 5,000 PSI pump 5-zone thermoregulation (1 zone on the pump, 3 zones on the hoses and 1 zone on the nozzle) A PrecisionFlow system for quick retraction of the product, accordingly synced to the velocity of the robot.

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Auto Body Hardening

SWIRL also allows application of structural hardening fluids in-lieu of other adhesive sheets.In this situation the application needs to be wider and thicker from 50 to 100 mm.These limits can be exceeded by repeating the application as needed.

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Auto Body Hardening

The below picture shows an example of a auto body hardening product on a FIAT vehicle.

Perimetral Gluing

The SWIRL system is also able to apply one-component epoxy adhesives to the perimeter of hoods and door panels.The working speed of the robot is 0.5 meters per second, a door panel or hood can be completely glued in under 11 seconds. Despite the high application velocity, the glue stream is very consistent thanks to the PrecisionFlow which adjusts the nozzleâ_Ts output velocity based on the actual speed of the robot. In order to provide a consistent application quality, the system is able to compensate for the effects generated by variation in glue viscosity.