ANÁLISE E OTIMIZAÇÃO DO PROCESSO DE MOLDAGEM PARA ELIMINAÇÃO DE DEFEITO EM VEDAÇÃO AUTOMOTIVA

Abstract

This study presents a case study conducted at an automotive seal manufacturing company, focusing on the analysis and correction of a water infiltration defect in an automotive door trim. The occurrence of the defect generated significant impacts, such as rework, batch blocking, and additional production costs. To identify the root cause and propose a definitive solution, quality tools were applied, including Brainstorming, Ishikawa Diagram, and the 5 Whys method. The analyses indicated that the defect was related to the deformation of the sealing flange caused by the extension of an insert inserted into the mold, which generated burrs and compromised the tightness of the part. As a proposed improvement, the insert was modified by removing the extension where the seal misalignment occurred. The solution was validated through leak tests and visual inspection, proving the elimination of the defect and the maintenance of the part's functionality. The study reinforces the importance of the structured application of quality tools for the precise identification of causes and the development of effective technical solutions in injection molding processes