Original scientific paper

https://doi.org/10.31803/tg-20240502092606

Injection Moulded Part Analysis by Alignment of Simulated and Referent Part Geometry

Damir Godec ; University of Zagreb, Faculty of Mechanical Engineering and Naval Architecture, Ivana Lučića 5, 10000 Zagreb, Croatia *
Filip Panđa orcid.org/0009-0003-8938-3289 ; YAZAKI-EUROPE Ltd. Slavonska avenija 26/6, 10000 Zagreb, Croatia
Mislav Tujmer orcid.org/0000-0003-1060-6973 ; University of Zagreb, Faculty of Mechanical Engineering and Naval Architecture, Ivana Lučića 5, 10000 Zagreb, Croatia

* Corresponding author.

Abstract

Warpage of the injection moulded parts is one of the most common defects after demoulding, which is intensively present in thin-walled moulded parts or parts with non-uniform wall thickness. The level of the warpage can be reduced by optimizing the mould tempering system in the phase of mould design, by optimizing the injection moulding parameters and recently by optimizing the shape of the mould cavity elements geometry – so-called inverse contouring. Computer simulation of injection moulding process can show the level of moulded part warpage after ejection from the mould, but it will not allow detailed measuring of critical moulded part measures deviations. Detailed analysis and prediction of the critical moulded part dimensions can be performed by aligning of the deformed moulded part design obtained with computer simulation, with moulded part reference CAD geometry. This paper shows the main steps and an example of the geometry aligning process for a specific thermoplastic part.

Keywords

injection moulding; moulded part geometry alignment; numerical simulation

Hrčak ID:

319182

URI

https://hrcak.srce.hr/319182

Publication date:

5.9.2024.

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