The contact area of the linear brush is flexibly bedded on a pneumatically regulated pressure buffer. This means that the brush filaments always touch the surface in a vertical position without any overbending, thus providing for a consistent wiping pressure. Optimal cleaning results are guaranteed. Metal blanks of varying thickness, for instance tailored blanks, can be transported through the cleaning system without readjustment as the pressure buffer compensates for differences in material thickness of up to +/- 2 mm.
In case a crash situation is detected, for instance damaged blanks, the mechanical crash seesaw will be triggered. A quick adjustment feature promptly propels the upper cleaning module into a safe position. A collision with the cleaning installation and resulting damage or time-consuming disruption to machine availability can thus be avoided.
Thermal self-cleaning mechanism
A self-cleaning unit consisting of rotating racks and compressed air nozzles continuously cleans the linear brushes both mechanically and pneumatically. A thermal self-cleaning function is also available as an option. This involves heating elements which heat the brush filaments and walls of the self-cleaning unit thereby liquifying the viscous mass of lubricants (hot melts). The mixture of particles and lubricants is systematically detached from the filaments and extracted through heated suction connections. Aerosols containing lubricants are separated from the extraction airflow via a cyclone separator and collected within an easily accessible collecting tray.