Method and system for applying a sealing agent to the surface of an internal cavity of a pneumatic tire

A method for applying a sealing agent to a surface of an internal cavity of a pneumatic tire, the method comprising:

• inserting an optoelectronic device into the internal cavity of the pneumatic tire;
• rotating the pneumatic tire at least 360 degrees about a first axis, to acquire a plurality of captured images from the optoelectronic device and to perform a three-dimensional surface scan of a plurality of portions of the surface that are uniformly distributed 360 degrees about the first axis, and thereby identify x, y, and z reference coordinates of a plurality of points into which each portion is divided as a function of the respective images;
• determining a profile of an interior surface of the tire from the plurality of captured images and the identified x, y, and z reference coordinates;
• extracting the optoelectronic device from the internal cavity of the pneumatic tire upon completion of the three-dimensional surface scan;
• calculating movements of an applicator device comprising a nozzle throughout application of a strip of sealing agent to the surface as a function of the identified three-dimensional reference coordinates of the entire internal cavity to maintain a constant distance between the applicator device and the surface;
• inserting the applicator device into the internal cavity;
• and
• driving the applicator device as a function of the calculated movements.