Design and performance analysis of an embedded amplified piezoelectric jetting dispensing valve

IF 2.4 4区工程技术 Q2 ENGINEERING, ELECTRICAL & ELECTRONIC

Journal of Micromechanics and Microengineering Pub Date : 2024-09-11 DOI:10.1088/1361-6439/ad76b5

Jingwei Yang, Lintong Han, Hongxin Wang, Hongnan Zhou, Limin Zhang and Lipeng He

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Abstract

In order to satisfy the market’s demand for high-consistency, micro-dispensing of colloids, an embedded lever-amplified piezoelectric dispensing valve based on flexure hinge is designed. This structure has stable jetting performance, strong reliability, and can achieve micro-dispensing of medium and low viscosity glue. Theoretical analysis shows that the output displacement of the piezoelectric stack can meet the displacement requirement of dispensing after being amplified by this amplification mechanism. And the output displacement and mode of the amplification mechanism are calculated and analyzed by simulation. The rationality of the simulation model is verified by experiments, and the effect law of driving voltage, signal duty cycle and working frequency on the mass of glue droplets is obtained. The results show that under the conditions of driving voltage 100 V, duty cycle 50%, glue supply pressure 0.6 MPa, working frequency 100 Hz, the consistency deviation of single dispensing amount is ±2.01%, as a whole, 0.34–0.38 mg of uniform tiny glue dots can be obtained. The experimental results have verified the stability and micro-dispensing performance of the embedded lever amplification piezoelectric dispensing valve, providing reference for the subsequent application and research of jet dispensing.

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嵌入式放大压电喷射分配阀的设计与性能分析

为了满足市场对高浓度、微量胶体点胶的需求，设计了一种基于挠性铰链的嵌入式杠杆放大压电点胶阀。该结构喷射性能稳定，可靠性强，可实现中低粘度胶水的微量点胶。理论分析表明，压电叠片的输出位移经该放大机构放大后，可满足点胶的位移要求。并对放大机构的输出位移和模式进行了仿真计算和分析。通过实验验证了仿真模型的合理性，并得出了驱动电压、信号占空比和工作频率对胶滴质量的影响规律。结果表明，在驱动电压 100 V、占空比 50%、供胶压力 0.6 MPa、工作频率 100 Hz 的条件下，单次点胶量的一致性偏差为±2.01%，整体可获得 0.34-0.38 mg 的均匀微小胶点。实验结果验证了嵌入式杠杆放大压电点胶阀的稳定性和微点胶性能，为后续喷射点胶的应用和研究提供了参考。

本文章由计算机程序翻译，如有差异，请以英文原文为准。

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来源期刊

Journal of Micromechanics and Microengineering 工程技术-材料科学：综合

CiteScore

4.50

自引率

4.30%

发文量

136

审稿时长

2.8 months

期刊介绍： Journal of Micromechanics and Microengineering (JMM) primarily covers experimental work, however relevant modelling papers are considered where supported by experimental data. The journal is focussed on all aspects of: -nano- and micro- mechanical systems -nano- and micro- electomechanical systems -nano- and micro- electrical and mechatronic systems -nano- and micro- engineering -nano- and micro- scale science Please note that we do not publish materials papers with no obvious application or link to nano- or micro-engineering. Below are some examples of the topics that are included within the scope of the journal: -MEMS and NEMS: Including sensors, optical MEMS/NEMS, RF MEMS/NEMS, etc. -Fabrication techniques and manufacturing: Including micromachining, etching, lithography, deposition, patterning, self-assembly, 3d printing, inkjet printing. -Packaging and Integration technologies. -Materials, testing, and reliability. -Micro- and nano-fluidics: Including optofluidics, acoustofluidics, droplets, microreactors, organ-on-a-chip. -Lab-on-a-chip and micro- and nano-total analysis systems. -Biomedical systems and devices: Including bio MEMS, biosensors, assays, organ-on-a-chip, drug delivery, cells, biointerfaces. -Energy and power: Including power MEMS/NEMS, energy harvesters, actuators, microbatteries. -Electronics: Including flexible electronics, wearable electronics, interface electronics. -Optical systems. -Robotics.