【摘要】：自動(dòng)送線系統(tǒng)是全自動(dòng)引線鍵合機(jī)的關(guān)鍵組成部分,其性能直接影響引線鍵合的質(zhì)量和效率。本文旨在提高自動(dòng)送線系統(tǒng)金線傳輸?shù)姆�(wěn)定性,降低金線在傳輸過程中的摩擦力以及振動(dòng),針對(duì)送線系統(tǒng)及其金線的動(dòng)力學(xué)特性進(jìn)行仿真分析,并通過實(shí)驗(yàn)獲得金線張緊力與氣壓的關(guān)系。最終搭建了自動(dòng)送線系統(tǒng),基于LabVIEW平臺(tái)對(duì)送線系統(tǒng)進(jìn)行了控制和實(shí)驗(yàn)調(diào)試。全文工作和取得的成果如下: 介紹了引線鍵合的工藝過程,分析了引線線夾的開合動(dòng)作與鍵合頭空間運(yùn)動(dòng)的時(shí)序關(guān)系,探討了鍵合過程中可能存在的問題�；诖�,初步確定了送線系統(tǒng)的整體結(jié)構(gòu),并分析其關(guān)鍵部件的結(jié)構(gòu)和性能。 分析了線夾打開狀態(tài)下金線的張力大小和振動(dòng)情況對(duì)線鍵合質(zhì)量的影響,探討了引線鍵合過程中線夾開合的時(shí)序問題�；跉怏w射流及圓柱繞流理論,推導(dǎo)金線所受的總阻力與氣體來流速度及氣壓的關(guān)系式。利用牛頓內(nèi)摩擦定律,推導(dǎo)金線的真空張緊力與氣體流速及氣壓的關(guān)系式。 基于有限元分析方法,借助ANSYS軟件的流固耦合模塊對(duì)金線的氣軌張緊力情況進(jìn)行仿真分析。對(duì)金線進(jìn)行動(dòng)力學(xué)分析,探索氣壓的合理范圍,進(jìn)而有效保證金線在高速運(yùn)動(dòng)情況下振動(dòng)較小,從而有利于金線的穩(wěn)定傳輸。與解析分析結(jié)果相比較,初步驗(yàn)證了金線張緊力仿真分析的正確性。 搭建了引線鍵合自動(dòng)送線軟硬件平臺(tái),實(shí)現(xiàn)了金線的平穩(wěn)快速傳輸。通過實(shí)驗(yàn)研究了金線在氣體導(dǎo)軌和真空張緊裝置內(nèi)的受力情況,確定了金線穩(wěn)定傳輸所需要的氣壓值范圍。 上述研究對(duì)提高自動(dòng)送線系統(tǒng)的性能具有重要意義,研究結(jié)果為引線鍵合及其相關(guān)領(lǐng)域的應(yīng)用提供了重要的理論和實(shí)踐指導(dǎo)。
[Abstract]:Automatic wire feeding system is the key part of automatic wire bonding machine, and its performance directly affects the quality and efficiency of wire bonding. The purpose of this paper is to improve the stability of gold wire transmission in automatic wire transmission system, to reduce the friction and vibration of gold wire in the process of transmission, to simulate and analyze the dynamic characteristics of wire feeding system and its gold wire, and to obtain the relationship between tension force and air pressure of gold wire through experiments. Finally, the automatic wire transmission system is built, and the wire transmission system is controlled and debugged based on LabVIEW platform. The work and achievements of this paper are as follows: the process of wire bonding is introduced, the timing relationship between the opening and closing action of the wire clip and the spatial motion of the bonding head is analyzed, and the possible problems in the bonding process are discussed. Based on this, the overall structure of the wire transmission system is preliminarily determined, and the structure and performance of its key components are analyzed. The influence of the tension and vibration of gold wire on the quality of wire bonding is analyzed, and the timing problem of wire clamp opening and closing in the process of wire bonding is discussed. Based on the theory of gas jet and cylinder flow around, the relationship between the total resistance of gold wire and the velocity and pressure of gas flow is derived. Based on Newton's law of internal friction, the relationship between vacuum tension force of gold line and gas velocity and air pressure is derived. Based on the finite element analysis method, the tension of the gas rail of the gold wire is simulated and analyzed with the help of the fluid-solid coupling module of ANSYS software. The dynamic analysis of the gold line is carried out to explore the reasonable range of air pressure, and then the vibration of the effective margin line is small under the condition of high speed motion, which is beneficial to the stable transmission of the gold line. Compared with the analytical results, the correctness of the simulation analysis of the tension force of the gold wire is preliminarily verified. The hardware and software platform of wire bonding automatic wire transmission is built, and the smooth and fast transmission of gold wire is realized. The stress of gold wire in gas guideway and vacuum tensioner is studied by experiment, and the range of gas pressure needed for stable transmission of gold wire is determined. The above research is of great significance to improve the performance of automatic wire feeding system. The research results provide important theoretical and practical guidance for the application of wire bonding and its related fields.
【學(xué)位授予單位】：天津大學(xué)
【學(xué)位級(jí)別】：碩士
【學(xué)位授予年份】：2012
【分類號(hào)】：TH165.1

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本文編號(hào)：2497468