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Adaptive Process Control and Alternative Injection Concepts for Thermoplastic Injection Molding

The goal of this work is the development and research of methods to improve process robustness and component quality in injection molding of thermoplastics. For this purpose, a state-based adaptive process control is presented, which is based on the monitoring of machine-internal process data. Boundary conditions for the development of the method are industrial requirements such as universality and scalability, high sensitivity to process induced interferences and the preventive avoidance of fail parts. In addition to improving the robustness of the production process, it is important to eliminate shortcomings in transient phases of the process, which occur after machine stoppages or after setup and start, to balance and improve the process manageability. In order to improve process and machine capabilities, an alternative injection concept using a screw without moving, locking elements at the screw tip was developed and examined. Depending on the process and melt state, such a „soft“ or „open“ locking system improves the process capability and causes less component-wear.

Lesen Sie die deutsche Zusammenfassung auf Kunststoffe.de
Author
 Stefan Kruppa

Stefan Kruppa
Lehrstuhl für Konstruktion und Kunststoffmaschinen
Universität Duisburg-Essen

Information

Free keywords: Injection molding, thermoplastics, adaptive process control, non-return valve, process robustness, process data, machine capability, back-flow compensated injection molding, spiral shearing part
Institute / chair: Fakultät für Ingenieurwissenschaften, Abteilung Maschinenbau und Verfahrenstechnik der Universität Duisburg-Essen
Language: German
Technical consultant for expert services: Prof. Dr.-Ing. Johannes Wortberg (Betreuer), Prof. Prof. hon. Dr. Tim A. Osswald
Publication year: 2015
Provider: Wissenschaftlicher Arbeitskreis Kunststofftechnik (WAK) / Kunststoffe.de

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