Design of Linear Piezoelectric Vertical-driving Vibratory Feeder

SU Jiang, TONG Jie, SHEN Yan-hu

Packaging Engineering ›› 2022 ›› Issue (15) : 274-280.

PDF(1878 KB)
PDF(1878 KB)
Packaging Engineering ›› 2022 ›› Issue (15) : 274-280. DOI: 10.19554/j.cnki.1001-3563.2022.15.032

Design of Linear Piezoelectric Vertical-driving Vibratory Feeder

  • SU Jiang1, TONG Jie1, SHEN Yan-hu2
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Abstract

The work aims to design a linear piezoelectric vertical-driving vibratory feeder by ring piezoelectric bimorphs, so as to meet the needs of high-speed feeding of micro electronic components in the field of modern electronic industry. Firstly, the structure of the feeder was designed, and the working principle of the feeder was described. Through the modal analysis of the ring piezoelectric bimorphs, the working vibration mode of the bimorphs was determined. Then, the output force expression of piezoelectric bimorphs was derived by the elastic thin plate theory with small deflection. MATLAB software was applied to investigate the relationship between the thickness of piezoelectric ceramics and substrate and the output coefficient, and the relationship between the elastic modulus of piezoelectric ceramics and substrate and the output coefficient. Finally, a prototype of the vibratory feeder was made and tested. The test results showed that the effective working frequency of the system was between 184-190 Hz. When the driving power supply voltage was 220 V and the frequency was 186.8 Hz, the feeding speed of 3.2 mm×2.8 mm LED reached 22.6 pcs/s, which was 14.7% higher than that of the rectangular piezoelectric bimorphs-driven feeder of the same model in the market. The proposed feeder has a good application prospect in the automatic packaging or automatic testing line for the high transportation of precision electronic components.

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SU Jiang, TONG Jie, SHEN Yan-hu. Design of Linear Piezoelectric Vertical-driving Vibratory Feeder[J]. Packaging Engineering. 2022(15): 274-280 https://doi.org/10.19554/j.cnki.1001-3563.2022.15.032
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