Patent ID: 11872578
Assignee: EXEL INDUSTRIES
Field: Chemical engineering (Chemistry)
Classification: CPC B  G | IPC B

Claim 0:
1. A method for applying a coating product to a surface of an object, the surface being modelled by a computer file and comprising at least one zone to be coated, the method implemented by a print head which, on the one hand, is mounted on a robot arm moving the print head in relation to the surface and which, on the other hand, comprises a body equipped with at least one printing nozzle, the method carried out by a calculator and comprising:
a) defining, via an automatic calculation from the computer file containing the model of the surface, a strip of surface to be coated, the strip being defined between two planes perpendicular to an ordinate axis of a first orthogonal coordinate system, the two planes respectively passing through an initial point and through a cut point, the initial point being a point of the surface whose ordinate in the first orthogonal coordinate system is the greatest among the points on the surface and the cut point being a point of the surface located, with respect to the initial point, at a distance measured in a negative direction along the ordinate axis, this distance being fixed by the geometry and nozzle distribution of the print head;
b) defining, via an automatic calculation, a trajectory opposite the strip of surface, the trajectory comprising a succession of reference points to be reached by a determined point of the print head for spatial positioning of the print head with, at each reference point, an orientation of the print head to be respected;
c) removing, via an automatic calculation, the strip to be coated from the computer file modelling the surface to be coated;
d) repeating a) until the modelled surface to be coated is of zero area;
e) defining a program for activating each nozzle of the print head on each trajectory; and
f) applying the coating product by activating each nozzle of the print head on the different trajectories defined at b) while respecting the orientation of the print head at each reference point, according to the activation program.