Reduction of Systematic Dosing Inaccuracies During the Application of Highly Viscous Substances

Abstract The automated application of adhesives and sealants on three-dimensional components requires that the application profile produced by constant medium dosing along the processing line has to be as uniform as possible in order to ensure adhesive and sealing functions. Incorrect dosing occurs especially frequently during the dosing of highly viscous substances at application points with a high degree of curvature and these inaccuracies later affect the function of the component. Incorrect dosing occurs partly due to the way in which the speed of the handling system responds. For this reason, we have developed a means of compensating for dosing errors arising from the kinematic response of the handling machine by methods of calculated control predictions for the dosing unit based on internal control information.