發(fā)布時(shí)間：2018-04-15 17:09

  本文選題：電流體噴印 + 電紡絲直寫��； 參考：《華中科技大學(xué)》2015年碩士論文

【摘要】：噴印工藝可實(shí)現(xiàn)大面積、低溫、共形和低成本制造,被視為柔性電子的理想制造技術(shù)。傳統(tǒng)噴印工藝采用壓電、熱氣泡的“擠”方式進(jìn)行噴印,分辨率難以高于20μm,無法兼容粘性溶液,在柔性電子制造中受到限制。電流體噴印采用電場(chǎng)“拉”方式,可以實(shí)現(xiàn)高粘性聚合物溶液的高分辨率打印,這種新工藝的裝備研制具有非常重要的意義。本文以電流體按需噴印工藝為背景,研究面向不同材料的圖案自適應(yīng)解析與單噴嘴/多噴嘴打印規(guī)劃,主要工作如下:1)系統(tǒng)介紹了電流體噴印機(jī)的結(jié)構(gòu)、軟件和控制系統(tǒng)組成,并完成搭建按需噴印系統(tǒng):直線電機(jī)運(yùn)動(dòng)平臺(tái)、電氣比例閥的氣壓控制、函數(shù)發(fā)生器+高壓發(fā)生器的電壓控制和精密流量供墨系統(tǒng),奠定了電流體按需噴印的硬件組織架構(gòu)。2)研究了按需噴印圖案分辨率的自適應(yīng)解析,解決了打印圖案與噴印液滴體積的匹配難題。對(duì)打印的圖案/圖像進(jìn)行二值化處理,然后依據(jù)視覺相機(jī)計(jì)算的噴印點(diǎn)尺寸對(duì)二值化圖案/圖像進(jìn)行插值計(jì)算,實(shí)現(xiàn)基于視覺反饋的分辨率自適應(yīng)調(diào)節(jié),以解決不同工藝參數(shù)和材料下,噴印點(diǎn)動(dòng)態(tài)變化導(dǎo)致電路打印不連續(xù)問題。3)研究了單噴嘴噴印工況下位圖打印與矢量圖打印方法,解決了普通圖像與電路圖案打印的差異化要求。采用逐行掃描和圖案跟蹤兩種方式,結(jié)合PMAC控制器對(duì)電氣比例閥、函數(shù)發(fā)生器、電壓放大器和直線電機(jī)的進(jìn)行協(xié)同控制與工藝匹配,研究了電壓及其占空比對(duì)打印的影響規(guī)律,最后分別打印離散點(diǎn)組成的普通字符和連續(xù)點(diǎn)組成的RFID天線。4)研究了不同類型噴嘴打印下的圖像解析與打印規(guī)劃策略,解決噴印過程中單噴嘴、多噴嘴切換問題。設(shè)計(jì)了多噴嘴打印頭,并分析了多噴嘴的電場(chǎng)分布。依據(jù)陣列化噴嘴的打印要求,實(shí)現(xiàn)并行打印和獨(dú)立可控打印,并依據(jù)噴嘴間距、噴印點(diǎn)尺寸提出了相應(yīng)的分塊化打印規(guī)劃方法,最后打印了普通字符和陣列化電路。以上按需噴印控制系統(tǒng)、路徑規(guī)劃已經(jīng)集成到自主研制的多功能電流體噴印裝備(Me-Jet XR1)系統(tǒng)中,并通過噴印實(shí)驗(yàn)驗(yàn)證了對(duì)不同材料、不同打印分辯率和不同噴嘴系統(tǒng)的自適應(yīng)性,提高了電流體按需噴印工藝能力,所參與研制的Me-Jet XR1裝備獲得了2014年瑞士日內(nèi)瓦國(guó)際發(fā)明金獎(jiǎng)。
[Abstract]:Spray printing can achieve large area, low temperature, conformal and low cost manufacturing, and is regarded as the ideal manufacturing technology for flexible electronics.The traditional printing process uses piezoelectric, hot bubble "extrusion" method to spray printing, the resolution is difficult to be higher than 20 渭 m, it can not be compatible with viscous solution, so it is limited in flexible electronic manufacturing.The electric field "pull" method is adopted in the current body spray printing, which can realize the high resolution printing of the high viscosity polymer solution. The development of this new technology is of great significance.In this paper, based on the on-demand jet printing process of current body, the adaptive pattern analysis and single nozzle / multi-nozzle printing planning for different materials are studied. The main work is as follows: 1) the structure, software and control system of the current body jet printing machine are introduced.And complete the construction of on-demand printing system: linear motor motion platform, electrical proportional valve pressure control, function generator high-voltage generator voltage control and precision flow ink supply system,The hardware organization architecture of on-demand printing is established. 2) the adaptive resolution analysis of on-demand printing pattern is studied, and the matching problem between printing pattern and droplet volume is solved.The binary processing of printed pattern / image is carried out, and then the binary pattern / image is interpolated according to the size of the printing point calculated by the visual camera to realize the adaptive adjustment of the resolution based on visual feedback.In order to solve the problem of circuit printing discontinuity caused by dynamic change of printing point under different process parameters and materials, the bitmap printing and vector printing method under single nozzle spray printing condition are studied.The difference between common image and circuit pattern printing is solved.By means of line by line scanning and pattern tracking, combined with the collaborative control and process matching of electrical proportional valve, function generator, voltage amplifier and linear motor by PMAC controller, the effect of voltage and duty cycle on printing is studied.Finally, the common characters of discrete points and the RFID antenna of continuous points are printed. 4) in order to solve the problem of single nozzle and multi-nozzle switching in the process of spray printing, the image analysis and print planning strategy under different types of nozzle printing are studied.The multi-nozzle printing head is designed and the electric field distribution of multi-nozzle is analyzed.According to the printing requirements of arrayed nozzles, the parallel printing and independent controlled printing are realized. According to the distance between the nozzles and the size of the printing points, the corresponding block printing planning method is proposed. At last, the common characters and the array circuit are printed.The above on-demand printing control system has been integrated into the Me-Jet XR1) system, which has been developed by ourselves, and the self-adaptability of different materials, different printing resolution and different nozzle system is verified by jet printing experiment.The Me-Jet XR1 equipment has won the International Invention Gold Award in Geneva, Switzerland in 2014.
【學(xué)位授予單位】：華中科技大學(xué)
【學(xué)位級(jí)別】：碩士
【學(xué)位授予年份】：2015
【分類號(hào)】：TN05

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