Open AccessOptimization of the Cooling of a Thermoplastic Injection Mold
Author(s) -
A. Chaâbène,
Sami Chatti,
Mouna Ben Slama
Publication year - 2022
Publication title -
analele universităţii "dunărea de jos" din galaţi. fascicula xii, utilajul şi tehnologia sudării/annals of "dunărea de jos" university of galaţi. fascicle xii, welding equipment and technology
Language(s) - English
Resource type - Journals
SCImago Journal Rank - 0.191
H-Index - 6
eISSN - 2668-6163
pISSN - 1221-4639
DOI - 10.35219/awet.2021.08
Subject(s) - molding (decorative) , mechanical engineering , mold , thermoplastic , materials science , water cooling , conformal map , heat transfer , transfer molding , process (computing) , injection moulding , phase (matter) , process engineering , computer science , composite material , engineering , mechanics , mathematics , chemistry , physics , mathematical analysis , organic chemistry , operating system
In injection molding processes for thermoplastic parts, the polymer solidification phase in the molding cavity has a strong influence on the quality of the shaped parts and also on the process cycle time. Reducing cycle time is one of the major concerns for plastic injection industries. As cooling phase presents the most critical phase to get quality and cycle time of the part, the application of additive manufacturing (AM) technologies has been overcoming the limitations of traditional cooling system design. AM enables the construction of conformal cooling channels for higher cooling uniformity due to its almost unlimited freedom of design that can fulfil the desired functions in injection molding process equipment. The analysis of the heat transfer during the phase of cooling allows the investigation of the optimal positioning of the cold sources and their intensities. In this paper, a systematic approach is used to replace conventional channels in an injection molding tool with conformal cooling channels. A simulation is used to develop a numerical model that describes the heat transfer and predicts the cycle time of both the optimal and conventional designs. Finally, a numerical comparison is made between traditional and conformal cooling to demonstrate the beneficial effect on reducing the manufacturing cycle and enhancing part quality.