Investigation on the micro injection molding process of an overmolded multi-material micro component

Federico Baruffi, Matteo Calaon, Guido Tosello, R. Elsborg

Research output: Contribution to conferencePaperResearchpeer-review

312 Downloads (Pure)

Abstract

Micro injection molding (μIM) is one of the few technologies capable of meeting the increasing demand of complex shaped micro plastic parts. This process, combined with the overmolding technique, allows a fast and cost-efficient production of multi-material micro components, saving numerous and difficult assembly steps, being the plastic molded directly on a metal substrate. In this scenario, an investigation on the fully automated micro overmolding manufacturing technology of a three-material micro component for acoustic applications has been carried out. Preliminary experiments allowed to identify an initial process window by considering the main defects affecting the part quality (flashes and gate marks). Within this range, the effect of three injection molding parameters, namely mold temperature, melt temperature and injection speed, has been evaluated with respect to the critical geometrical characteristics of the component. An optical CMM with sub-micrometric resolution has been employed for the measurements. Results show that the process parameters have a significant influence on some component features, while others mainly depend on the insert alignment inside the micro mold cavity.
Original languageEnglish
Publication date2017
Number of pages5
Publication statusPublished - 2017
Event2017 World Congress on Micro and Nano Manufacturing (WCMNM 2017) - Kaohsiung, Taiwan, Province of China
Duration: 27 Mar 201730 Mar 2017

Conference

Conference2017 World Congress on Micro and Nano Manufacturing (WCMNM 2017)
CountryTaiwan, Province of China
City Kaohsiung
Period27/03/201730/03/2017

Keywords

  • Micro Injection Molding
  • Micro overmolding
  • Optical micro metrology

Cite this

Baruffi, F., Calaon, M., Tosello, G., & Elsborg, R. (2017). Investigation on the micro injection molding process of an overmolded multi-material micro component. Paper presented at 2017 World Congress on Micro and Nano Manufacturing (WCMNM 2017), Kaohsiung, Taiwan, Province of China.