Abstract
To eliminate defects and improve the quality of molded parts, increasing the mold temperature is one of the applicable solutions. A high mold temperature can increase the path flow of the polymer inside the cavity allowing reduction of the number of injection points, reduction of part thickness, and moulding of smaller and more complex geometries. The last two aspects are very important in micro injection molding. In this paper, a new embedded induction heating system is proposed and validated and two different coil setups were tested and compared. An experimental investigation was performed based on a test geometry integrating different aspect ratios of small structures. Acrylonitrile butadiene styrene (ABS) was used as material, and different mold temperatures were tested. The replicated test objects were measured by means of an optical coordinate measuring machine (CMM). On the basis of the experimental investigation, the efficacy of the two induction embedded coils, with respect to improvement of replication quality, has been verified.
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References
Berger GR (2014) Influence of mold surface temperature on polymer part warpage in rapid heat cycle molding. AIP Conf Proc 1593:189–194
Michaeli W, Schöngart M, Klaiber F, Beckemper S (2011) Variothermal injection moulding of superhydrophobic surfaces, in 7th International Conference on Multi-Material Micro Manufacture, pp 978–981
Chen S, Engineering M, Yuan C (2009) Rapid thermal cycling of injection molds: an overview on technical approaches and applications. Adv Polym Technol 27(4):233–255
Menotti S (2013) Initial verification of an induction heating set-up for injection molding. ANTEC 2013 Conf. Proc., pp 1485–1489
County H (2011) The effects of various variotherm processes and their mechanisms on injection molding. Intern Polym Process, 265–274
Menotti S (2014) Micro injection molding of thin walled geometries with induction heating system. Proc ICOMM
Litz wires [Online]. Available: http://www.newenglandwire.com/products/litz-and-formed-cables/types-and-constructions.aspx. [Accessed: 23-Sep-2014]
Somaloy [Online]. Available: http://www.hoganas.com/Documents/Segmentbrochures/Somaloy/Somaloy_Technology_October_2013_0600HOG.pdf. [Accessed: 23-Sep-2014]
Sung Y, Hwang S (1848) Design of an insert type induction heating and cooling system for injection moulding processes. Teh vjensnik 3651:651–656
Chiffre L D (2010) Geometrical metrology and machine testing: compendium, course 41731, January 2010. DTU
Menotti S, Hansen H N, Bissacco G, Calaon M, Tang P T, Ravn C (2014) Injection molding of nanopatterned surfaces in the sub-micrometer range with induction heating aid. Int J Adv Manuf Technol
Guerrier P, Nielsen KK, Hattel JH, Menotti S (2015) An axisymmetrical non-linear finite element model for induction heating in injection molding tools, ongoing research
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Menotti, S., Nørgaard Hansen, H., Bissacco, G. et al. Comparison of two setups for induction heating in injection molding. Int J Adv Manuf Technol 81, 1863–1870 (2015). https://doi.org/10.1007/s00170-015-7224-x
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DOI: https://doi.org/10.1007/s00170-015-7224-x