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| Content Provider | IEEE Xplore Digital Library |
|---|---|
| Author | Jinsong Zhang Guowei Xiao Guiren Huang Jianhua Zhang |
| Copyright Year | 2013 |
| Description | Author affiliation: Sch. of Mechatron. Eng. & Autom., Shanghai Univ., Shanghai, China (Jinsong Zhang; Guowei Xiao; Guiren Huang; Jianhua Zhang) |
| Abstract | A novel approach of non-contact fluid dispensing has been proposed based on the principle of gas-liquid two-phase flow. For the direct driving principle, the slug flow pattern can be obtained stably in the micro-channel as the flip ratio between the liquid and gas is in an appropriate range. The slug flow has a special characteristic that is the liquid droplets have been separated by the air bubbles uniformly and stably. This can be used to execute a precise liquid dispensing by slug flow control. This paper applied the two-phase flow principle for adhesive dispensing. The continuous air was introduced into the continuous liquid to form a gas-liquid two-phase slug flow in the mixing chamber. As a result, the continuous liquid was cut by the bubbles to be uniform and constant droplets and spray out of the nozzle. The droplets on the substrate have uniform interval, accurate volume, good consistency, high controllability and no back haul. The experiment results supported that the process parameters had strong linear relationships with the geometrical dimensions. This is a very important truth that the independent variables, $Φ_{nozzle},$ $Φ_{needle},$ $Q_{gas},$ $Q_{liquid},$ and $D_{distance},$ can control dependent variables of $f_{droplet}$ and $M_{droplet}$ to realize high precision dispensing. |
| Sponsorship | IEEE Compon., Packag. Manuf. Technol. Soc. |
| Starting Page | 1301 |
| Ending Page | 1304 |
| File Size | 470343 |
| Page Count | 4 |
| File Format | |
| ISBN | 9781479904983 |
| DOI | 10.1109/ICEPT.2013.6756696 |
| Language | English |
| Publisher | Institute of Electrical and Electronics Engineers, Inc. (IEEE) |
| Publisher Date | 2013-08-11 |
| Publisher Place | China |
| Access Restriction | Subscribed |
| Rights Holder | Institute of Electrical and Electronics Engineers, Inc. (IEEE) |
| Subject Keyword | Liquids Needles Electronics packaging Orifices Substrates Conferences controllable parameters micro-fluid dispensing gas-liquid two-phase flow |
| Content Type | Text |
| Resource Type | Article |
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