| Popis: |
The pressure profile recognition technique for monitoring and diagnose processing failures during an injection moulding process, such as burn marks, and short shots, is a useful instrument for process and part quality control, production with zero defects and greater efficiency. Therefore, this work aims to demonstrate the feasibility of the in-cavity pressure monitorization for failure diagnose and injection moulding process optimization. The methodology used to analyse the obtained pressure variation is presented. The results were correlated to the theoretical profile curve, which enables to obtain information about the process and the moulding tool. This way, it was possible to determine the origin of the defects present in the injected parts, focusing not only on the velocity to pressure switchover, but also in the initial part of the curve, related to the filling phase. Moreover, the obtained measured results and the studied processing conditions were correlated with the injection moulding process simulation. |
