气动喷射阀点胶质量改善研究
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摘要
胶点的一致性及是否有卫星滴是衡量喷射阀点胶质量的重要指标。为了有效地改善点胶质量,提出了一个数学模型。该模型能根据胶水特性预估其喷射所需的弹簧预压力临界值,通过调节弹簧预压力使喷射速度在临界喷射速度附近,从而达到去除卫星滴和改善胶滴一致性的目的。首先建立了气缸模型和点胶模型,以仿真手段获取点胶过程中撞针受到的胶液阻力和气体阻力;再依据能量守恒定律和喷射理论得出所需的驱动能量,从而计算出所需弹簧预压力;最后通过实验验证了模型的有效性和点胶质量改善方式的可行性,通过该实验获取了直径为0.45 mm,一致性误差小于5%的胶滴。
The consistency and the quantity of satellite droplet are important indicators to the jetting quality. In order to improve the jetting quality effectively,a mathematical model was established. The model can estimate the spring preload which is required for critical jetting,adjust the injection speed close to the critical jetting velocity by adjusting the spring preload,which can avoid satellite droplet and improve the glue dot consistency. Firstly,the cylinder model and the jetting model were established to obtain the glue resistance and gas resistance which will block the movement of pin. And then,the drive energy and the spring preload can be obtained base on the jetting theory and the energy conservation theorem. The availability of the model and the feasibility of the jetting quality improving method were verified. Finally,experimental obtained glue dots with diameter of 0. 45 mm without any satellite droplet which consistency error is under 5 %.
The consistency and the quantity of satellite droplet are important indicators to the jetting quality. In order to improve the jetting quality effectively,a mathematical model was established. The model can estimate the spring preload which is required for critical jetting,adjust the injection speed close to the critical jetting velocity by adjusting the spring preload,which can avoid satellite droplet and improve the glue dot consistency. Firstly,the cylinder model and the jetting model were established to obtain the glue resistance and gas resistance which will block the movement of pin. And then,the drive energy and the spring preload can be obtained base on the jetting theory and the energy conservation theorem. The availability of the model and the feasibility of the jetting quality improving method were verified. Finally,experimental obtained glue dots with diameter of 0. 45 mm without any satellite droplet which consistency error is under 5 %.
引文
[1]QUINONES H,BABIZ A,DECK C,et al.Fluid jetting for next generation packages.Proceedings of Packaging Technology[C].Berlin:[s.n.],2002:1-8.
[2]谢丹,张鸿海,舒霞云,等.气动膜片式多材料微液滴按需喷射技术研究[J].中国科学:技术科学,2010(7):10.
[3]张鸿海,舒霞云,肖峻峰,等.气动膜片式微滴喷射系统原理与实验[J].华中科技大学学报(自然科学版),2009(12):100-103.
[4]肖峻峰.气动膜片式微滴喷射系统研究[D].武汉:华中科技大学,2009.
[5]陈奎宇,邓圭玲,韩玮.喷射布胶胶液累积体积及其平均流速数值模拟[J].半导体技术,2007(3):267-270.
[6]CHEN Kuiyu,DENG Guiling.The Influence Regularity of Structural Parameters of Fluid Jetting Dispensing.2007 International Symposium on High Density packaging and Microsystem Integration[C].[S.l.]:[s.n.],2007:1-4.
[7]陈奎宇,邓圭玲.驱动系统参数对胶液喷射分配的影响[J].计算机仿真,2007(11):289-292,307.
[8]路崧.压电驱动非接触喷射点胶阀的设计理论与实验研究[D].长春:吉林大学,2016.
[9]路崧,江海,顾守东,等.液压式压电驱动喷射点胶阀设计与实验[J].四川大学学报(工程科学版),2015(3):167-173.
[10]焦晓阳,刘建芳,丁宁宁,等.压电气体混合驱动式喷射点胶阀的设计与实验[J].哈尔滨工程大学学报,2013,34(11):1445-1449.
[11]孙慧.高粘性微量液滴非接触式分配技术研究[D].哈尔滨:哈尔滨工业大学,2011.
[12]吴凯亮.喷射式精密点胶阀的设计及分析[D].哈尔滨:哈尔滨工业大学,2012.
[13]许鑫.流体喷射点胶过程仿真与实验研究[D].广州:广东工业大学,2014.
[14]肖渊,黄亚超.气动式微滴喷射过程仿真与尺寸均匀性试验研究[J].中国机械工程,2014(21):2936-2941.
[15]李渭松,单修洋,魏新明.气动式喷射阀泄压过程数值模拟与分析[J].现代制造工程,2017(1):1-6,18.
[16]胡效东,周以齐,方建华.单双腔抗性消声器压力损失CFD研究[J].中国机械工程,2006(24):2567-2572.
[17]LU Song,CHAI Bosen,LIU Jianfang,et al.The Experimental Study on the Influence Factorsin Adhesive Dispensing Dot Diameter of Impact Jetting Valve[J].IEEE Transactions on Components,Packaging and Manufacturing Technology,2016(6):326-330.
[2]谢丹,张鸿海,舒霞云,等.气动膜片式多材料微液滴按需喷射技术研究[J].中国科学:技术科学,2010(7):10.
[3]张鸿海,舒霞云,肖峻峰,等.气动膜片式微滴喷射系统原理与实验[J].华中科技大学学报(自然科学版),2009(12):100-103.
[4]肖峻峰.气动膜片式微滴喷射系统研究[D].武汉:华中科技大学,2009.
[5]陈奎宇,邓圭玲,韩玮.喷射布胶胶液累积体积及其平均流速数值模拟[J].半导体技术,2007(3):267-270.
[6]CHEN Kuiyu,DENG Guiling.The Influence Regularity of Structural Parameters of Fluid Jetting Dispensing.2007 International Symposium on High Density packaging and Microsystem Integration[C].[S.l.]:[s.n.],2007:1-4.
[7]陈奎宇,邓圭玲.驱动系统参数对胶液喷射分配的影响[J].计算机仿真,2007(11):289-292,307.
[8]路崧.压电驱动非接触喷射点胶阀的设计理论与实验研究[D].长春:吉林大学,2016.
[9]路崧,江海,顾守东,等.液压式压电驱动喷射点胶阀设计与实验[J].四川大学学报(工程科学版),2015(3):167-173.
[10]焦晓阳,刘建芳,丁宁宁,等.压电气体混合驱动式喷射点胶阀的设计与实验[J].哈尔滨工程大学学报,2013,34(11):1445-1449.
[11]孙慧.高粘性微量液滴非接触式分配技术研究[D].哈尔滨:哈尔滨工业大学,2011.
[12]吴凯亮.喷射式精密点胶阀的设计及分析[D].哈尔滨:哈尔滨工业大学,2012.
[13]许鑫.流体喷射点胶过程仿真与实验研究[D].广州:广东工业大学,2014.
[14]肖渊,黄亚超.气动式微滴喷射过程仿真与尺寸均匀性试验研究[J].中国机械工程,2014(21):2936-2941.
[15]李渭松,单修洋,魏新明.气动式喷射阀泄压过程数值模拟与分析[J].现代制造工程,2017(1):1-6,18.
[16]胡效东,周以齐,方建华.单双腔抗性消声器压力损失CFD研究[J].中国机械工程,2006(24):2567-2572.
[17]LU Song,CHAI Bosen,LIU Jianfang,et al.The Experimental Study on the Influence Factorsin Adhesive Dispensing Dot Diameter of Impact Jetting Valve[J].IEEE Transactions on Components,Packaging and Manufacturing Technology,2016(6):326-330.