Cleaning device for a conveyor belt contaminated with coating agent residues, coating device, method for cleaning a conveyor belt contaminated with coating agent residues

A coating device comprising:

• an endlessly revolving conveyor belt (2) for receiving at least one workpiece;
• at least one coating unit for superficial application of a coating agent onto the workpiece;
• a cleaning device (1) having at least one first roller (3) which is arranged below the conveyor belt (2) and a lateral surface of which is in contact with a lower strand of the conveyor belt (2), and an endlessly revolving cleaning belt (5) which is arranged below the first roller (3);
• the lateral surface of the first roller (3) contacts an upper strand of the cleaning belt (5);
• the cleaning belt (5) has a main conveying direction (6) during a conveying movement on the upper strand and is arranged such that the cleaning belt is tilted relative to the main conveying direction (6) in relation to a longitudinal axis of the first roller (3);
• a first dispensing device (13, 13′) at least one of on or above the cleaning belt (5) configured to feed a first solvent onto the cleaning belt (5) such that the first solvent is conveyed by the conveying movement of the cleaning belt (5) along the main conveying direction (6) into a region in which the cleaning belt (5) is in contact with the first roller (3);
• and
• the first roller (3) is configured and arranged such that, by a rotational movement thereof, said first roller at least partially picks up the first solvent located on the cleaning belt (5) and dispenses the first solvent onto the conveyor belt (2).

A method for cleaning an endlessly revolving conveyor belt contaminated with coating agent residues, the method comprising:

• arranging a first roller (3) below the conveyor belt (2) such that a lateral surface of the first roller (3) contacts a lower strand of the conveyor belt (2);
• arranging an endlessly revolving cleaning belt (5) below the first roller (3);
• arranging the cleaning belt (5) below the first roller (3) such that the lateral surface of the first roller (3) contacts an upper strand of the cleaning belt (5), with the cleaning belt (5) being tilted with a main conveying direction (6) relative to a longitudinal axis of the first roller (3);
• placing a solvent onto the upper strand of the cleaning belt (5) and conveying the solvent by a conveying movement of the cleaning belt (5) along the main conveying direction (6) into a region in which the cleaning belt (5) contacts the first roller (3);
• and
• setting the first roller (3) into a rotational movement thereby picking up the solvent located on the cleaning belt (5) and dispensing the solvent onto the conveyor belt (2).