發(fā)布時間：2018-08-09 13:02

【摘要】：點膠工藝廣泛用于微電子、光電子、微機械系統(tǒng)等領(lǐng)域,而現(xiàn)有的點膠技術(shù)難以滿足口益復雜的封裝要求。噴射點膠是新一代的點膠技術(shù),但是現(xiàn)有的氣動——彈簧方式驅(qū)動的噴射點膠頭主要被國外公司壟斷,同時也存在驅(qū)動力有限,控制不方便等缺點。為打破壟斷,根據(jù)噴射點膠技術(shù)的要求,提出了電磁驅(qū)動噴射點膠方案。 本文首先對點膠工藝和電磁驅(qū)動技術(shù)的發(fā)展現(xiàn)狀及趨勢做了簡要的介紹；接著介紹了電磁驅(qū)動噴射點膠技術(shù)的組成和實現(xiàn)原理,對其關(guān)鍵執(zhí)行元件電磁驅(qū)動噴射點膠頭的結(jié)構(gòu)設(shè)計過程進行了描述,完善了其結(jié)構(gòu)設(shè)計。根據(jù)電磁驅(qū)動噴射點膠的工作特點,設(shè)計、改進了驅(qū)動電路,對電路的工作原理和關(guān)鍵元件的選取做了詳細說明,并完成了電路的調(diào)試工作；然后對電磁噴射點膠頭試制樣品的進行了一系列的測試分析,包括預(yù)壓彈簧的剛度、靜態(tài)電磁力和噴針位移響應(yīng)等；同時,為了更好的分析電磁驅(qū)動噴射點膠頭的工作特性,利用Matlab/Simulink軟件建立了噴射過程的仿真模型。通過仿真模型,分析了驅(qū)動電壓、摩擦力等關(guān)鍵參數(shù)對噴射頭性能的影響,并進行了參數(shù)優(yōu)化,改進了噴射閥的性能。最后,利用電磁驅(qū)動噴射點膠閥進行了噴射點膠實驗。實驗表明,電磁驅(qū)動噴射點膠閥初步實現(xiàn)了粘度為1.2Pa.s的膠液六滴／秒的噴射點膠,能較好的滿足工業(yè)點膠要求。
[Abstract]:Dispensing technology is widely used in microelectronics, optoelectronics, micromechanical systems and other fields, but the existing dispensing technology is difficult to meet the complex packaging requirements. Jet dispensing technology is a new generation of dispensing technology, but the existing pneumatic spring driven jet dispenser head is mainly monopolized by foreign companies. At the same time, there are some disadvantages such as limited driving force and inconvenient control. In order to break the monopoly, according to the requirements of jet dispensing technology, the electromagnetic drive jet dispensing scheme was proposed. In this paper, the development status and trend of dispensing technology and electromagnetic drive technology are introduced briefly, and then the composition and realization principle of electromagnetic driven jet dispensing technology are introduced. The structure design process of the key actuator electromagnetic jet dispenser is described, and its structure design is improved. According to the working characteristics of electromagnetic drive spray dispenser, the driving circuit is designed and improved. The working principle of the circuit and the selection of key components are explained in detail, and the debugging work of the circuit is completed. Then, a series of tests and analysis are carried out on the sample of electromagnetic jet dispenser, including the stiffness of preloaded spring, the static electromagnetic force and the displacement response of jet needle, etc. At the same time, in order to better analyze the working characteristics of electromagnetic jet dispenser, The simulation model of injection process is established by using Matlab/Simulink software. Through the simulation model, the effects of key parameters such as driving voltage and friction force on the performance of the jet head are analyzed, and the parameters are optimized to improve the performance of the injection valve. Finally, the spray dispensing experiment was carried out using electromagnetic driven spray dispensing valve. The experimental results show that the electromagnetic driven jet dispensing valve has realized the spray dispensing of 1.2Pa.s with viscosity of six drops / s, which can meet the requirements of industrial dispensing.
【學位授予單位】：中南大學
【學位級別】：碩士
【學位授予年份】：2011
【分類號】：TH134

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