【摘要】：“印制電子”是指利用各種印制技術(shù)形成電子元器件和電路的電子產(chǎn)品。噴墨打印作為印制電子技術(shù)的一種,是利用噴墨打印機(jī)將導(dǎo)電性墨水噴射到各種基材上形成導(dǎo)電線路。相比于傳統(tǒng)“減成法”制造PCB板,噴墨打印具有高效、低耗、節(jié)能、環(huán)保等一系列優(yōu)點(diǎn),已經(jīng)逐漸成為人們關(guān)注的焦點(diǎn)。 論文以昆山海斯電子有限公司研發(fā)的IJDAS300a型印制電子噴墨打印機(jī)為研究對象,對其框架結(jié)構(gòu)進(jìn)行靜、動(dòng)態(tài)力學(xué)性能分析與優(yōu)化。首先,利用有限元法,選用梁單元和集中質(zhì)量單元,建立合理、準(zhǔn)確的簡化分析模型。然后通過ANSYS應(yīng)用軟件分析打印機(jī)靜態(tài)力學(xué)性能,分析其框架在不同工況下,結(jié)構(gòu)關(guān)鍵點(diǎn)處應(yīng)力、應(yīng)變、位移和轉(zhuǎn)角。結(jié)果表明框架最大應(yīng)力僅1.43Mpa,遠(yuǎn)小于鋁合金的屈服應(yīng)力,上部橫梁相對位移變化僅為12μm,最大轉(zhuǎn)角Tx、Ty分別為7.23*10-6(rad)和4.64*10-5(rad)。其次,對框架結(jié)構(gòu)進(jìn)行振動(dòng)分析,得到框架結(jié)構(gòu)的前六階固有頻率和模態(tài),其一階固有頻率為122Hz,遠(yuǎn)大于電機(jī)的工作頻率,不會(huì)發(fā)生共振。同時(shí)分析了框架在慢速和常速兩種移動(dòng)載荷作用下上部橫梁的瞬態(tài)響應(yīng),得到在慢速下,位移響應(yīng)的最大值仍為12μm,與靜載作用下位移值一致,而在常速作用下,位移值約12.5μm。最后,依據(jù)靜態(tài)和動(dòng)態(tài)分析的數(shù)據(jù),提出了結(jié)構(gòu)改進(jìn)方案并與改進(jìn)前的框架進(jìn)行了分析對比,得出在靜載作用下,位移值整體略有減小,一階固有頻率提升至133.5Hz,框架重量減少8%,整機(jī)剛度得到提高。
[Abstract]:"printed electronics" refers to the use of a variety of printed technology to form electronic components and circuits of electronic products. Inkjet printing, as a kind of printing electronic technology, uses inkjet printer to jet conductive ink onto various substrates to form conductive circuit. Compared with the traditional "reduction method" to make PCB board, inkjet printing has a series of advantages, such as high efficiency, low consumption, energy saving, environmental protection and so on, which has gradually become the focus of people's attention. In this paper, IJDAS 300a printed electronic inkjet printer developed by Kunshan Hayes Electronics Co., Ltd is taken as the research object, and the static and dynamic mechanical properties of its frame structure are analyzed and optimized. Firstly, using the finite element method, the beam element and the concentrated mass element are selected to establish a reasonable and accurate simplified analytical model. Then the static mechanical properties of the printer are analyzed by ANSYS application software, and the stress, strain, displacement and rotation angle of the frame at the key points of the structure under different working conditions are analyzed. The results show that the maximum stress of the frame is only 1.43 MPA, which is much less than the yield stress of aluminum alloy. The relative displacement of the upper beam is only 12 渭 m, and the maximum rotation angle Tx,Ty is 7.23 脳 10 ~ 6 (rad) and 4.64 脳 10 ~ 5 (rad)., respectively. Secondly, the first six natural frequencies and modes of the frame structure are obtained by vibration analysis. The first order natural frequency of the frame structure is 122Hz, which is much larger than the working frequency of the motor, and the resonance will not occur. At the same time, the transient response of the upper beam under slow and constant moving loads is analyzed. The maximum displacement response is still 12 渭 m at slow speed, which is consistent with the displacement value under static load, but under the constant velocity, the maximum value of displacement response is 12 渭 m under slow speed, and is consistent with the displacement value under static load, while under the constant velocity, the maximum displacement response is still 12 渭 m. The displacement value is about 12.5 mm. Finally, according to the data of static and dynamic analysis, the scheme of structural improvement is put forward and compared with the frame before improvement. It is concluded that under static load, the overall displacement value decreases slightly, and the first order natural frequency is raised to 133.5Hz. The weight of the frame is reduced by 8% and the stiffness of the whole machine is improved.
【學(xué)位授予單位】：華東理工大學(xué)
【學(xué)位級別】：碩士
【學(xué)位授予年份】：2013
【分類號】：TP334.83

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