Abstract
In electronics manufacturing the time-pressure dispensing system has been widely used to squeeze adhesive fluid in a syringe onto boards or substrates with pressurised air. For accurate control of the fluid volume, it is vital to have a thorough understanding of the whole process. However, the complexity of the process, which includes air-fluid coupling and their nonlinear uncertainties, makes it difficult to obtain an accurate process model. Using the spectral method, an approximate fluid flow model for both the Newtonian and non-Newtonian fluid can be developed. By taking into account nonlinear flow passing through the valve, attenuation and time delay in the pneumatic lines, syringe chamber dynamics and fluid flow dynamics, a simple but effective model is derived to describe the whole dispensing system with reasonable accuracy. Experiments performed thereafter validate the model.
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Zhao, YX., Li, HX., Ding, H. et al. Integrated modelling of a time-pressure fluid dispensing system for electronics manufacturing. Int J Adv Manuf Technol 26, 1–9 (2005). https://doi.org/10.1007/s00170-003-1978-2
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DOI: https://doi.org/10.1007/s00170-003-1978-2