气体辅助注射成型模拟及工艺优化
详细信息    本馆镜像全文|  推荐本文 |  |   获取CNKI官网全文
摘要
本文通过对气体辅助注射成型工艺的系统研究,针对气辅成型工艺领域存在的实际问题,就气体辅助注射成型工艺的设计提出了较为全面的解决方案:分析总结出气道结构及气体注射参数对成型过程的影响规律;归纳出气体注射参数的优化设置经验公式。
     在气体辅助注射成型工艺设计方面:通过深入分析气体辅助注射成型工艺过程及气体穿透特点,结合目前在气辅成型工艺实践方面的研究成果,针对气体辅助注射成型工艺的产品壁厚设计、产品结构设计、气道布置及尺寸设计、成型模具设计和成型工艺参数设置提出了一套较为系统的设计参考准则。
     在气道结构及气体注射参数对成型过程的影响规律和气体注射参数的优化设置方面:本文建立了多个具有不同气道等效半径和气道长度的典型气辅成型制件CAD模型:以该模型为基础,采用目前较为成熟的塑料成型CAE软件Moldflow Plastics Insight来模拟这些模型的气体辅助注射成型工艺过程;通过对分析模拟结果数据的综合分析,总结出气道等效半径及长度、气体注射延迟时间、气体注射时间和气体注射压力对气辅成型过程的影响规律及其对产品最终成型质量的影响规律。此外,通过从模拟试验结果中提取出相应的成型质量衡量数据,并结合气道等效半径和气道长度数据,运用数理统计方法对这些数据进行分析处理,推导出气体注射延迟时间与气道结构尺寸之间的函数关系式、气体注射压力与气体注射延迟时间及气道结构尺寸之间的函数关系式和气道穿透长度与气道结构尺寸、气体注射延迟时间之间的函数关系式。在这些函数关系式的指导下,就可以计算出气体注射参数的优化设置数值及气道穿透长度的预测值。
     在本文末尾,通过实验模拟的方式,对推导出的气体注射参数优化设置经验公式进行了验证,确认这些公式是具有较好的预测精度和参考价值的。
During the work of this thesis, the author thoroughly researched the Gas-assisted Injection Molding (GAIM). For settling the problems of GAIM, the process design of GAIM was concluded, the rule of affection for GAIM process by gas channel structure and gas process parameters was revealed, furthermore, the setting functions of gas process parameters were created.
    In the GAIM process design research, with in-depth analysis of GAIM procedure and gas penetration behavior, as well as combined with current achievements, the GAIM components thickness and structure design criterions, gas channel layout and dimension design standards, GAIM molds design rules and process parameters setting method were summarized.
    In this thesis, several typical GAIM models were created with different gas channel dimensions. By the MPI (Moldflow Plastics Insight) simulation of these models, a series of data were recorded. Through integrated analysis of these data, the affection rule of GAIM by gas channel equivalent radius, gas injection pressure and gas injection time were concluded. Moreover, with the mathematic deduction of the simulation setting parameters and result data, the expression between gas delay time and gas channel dimensions; the function between gas injection pressure and gas delay time with gas channel dimensions; as also, the gas penetration length formula with variables of gas channel dimensions, gas delay time were derived. With these expressions, we can easily figure out the optimized gas injection parameters and predict the gas channel penetration length.
    Finally, a couple of verify experiments were executed and the above conclusions were proved to be relatively correct and helpful for the design of GAIM process.
引文
[1] 瞿金平,胡汉杰.聚合物成型原理及成型技术.北京:化学工业出版社,2001
    [2] 蔡军辉.许元泽.气体辅助注塑成型.塑料.1995.24(6):35~41
    [3] 汪建萍.气体辅助注射成型.塑料,2001,30(3):53~56
    [4] 梁瑞凤.德英美三国气体辅助注塑技术的方展现状.化学通报,1997,7:57~60
    [5] 张晓黎,吴崇峰,屈春起.气辅注射成型技术进展.中国塑料,2002,16(8):14~18
    [6] 张华,李德群.气体辅助注塑成型技术.塑料工业,1997,5:76~79
    [7] 辛勇,柳和生,杨国泰等.气体辅助注射成型表层熔体形成机理的分析.高分子通报,2001,3:70~74
    [8] 辛勇.彭颖红,阮雪榆.薄壁气体辅助注塑件气体穿透过程的研究.中国机械工程,2003,14(8):640~643
    [9] 申长雨,李倩.橡塑模具优化设计技术.北京:化学工业出版社,1997
    [10] 王旭东.气辅成型技术及其应用.现代塑料加工应用,2002,14(3):15~18
    [11] 梁继才,孙志斌,付沛福.气体辅助注射成型装置.电加工与模具,2000,2:36~38
    [12] 匡唐清,柳和生,周国发.气体辅助注射成型设备的构建.橡塑技术与装备,2003,29(5):1~7
    [13] 李文星,郭德有,潘红珊.气体辅助注塑成型技术及装备.农机化研究,2002,188(3):147~148
    [14] 匡唐清,柳和生,周国发.气体辅助注射成型关键技术.橡塑技术与装备,2001,27(9):1~7
    [15] Rean Der Chien, Shia-Chung Chen, Ming Chang Jeng, et. Mechanical properties of gas-assisted injection moulded PS, PP and Nylon parts. Polymer, 1999,40:2949~2959
    [16] Moldflow Co. Ltd. Gas Injection Process and Applications. USA:Moldflow Co. Ltd, 2002
    [17] 钟世云.水辅注塑技术进展.中国塑料,2002,16(12):18~22
    [18] Cinpres. Assisted Injection Molding. Cinpres Gas Injection Ltd, 2003
    [19] 顾国芳.浦鸿汀.聚合物流变学基础.上海:同济大学出版社,2000
    [20] 王利霞,刘春太,申长雨等.注塑模充填过程动态模拟.中国塑料,1996,10(5):71~75
    [21] 李倩.气体辅助注射成型充填/后充填过程流动数值模拟:[硕士学位论文].郑州:郑州大学材料加工工程,2002
    [22] 孙燕萍,柳和生,熊洪槐等.气辅注射充模流动压力及速度场数值模拟.塑料科技,2000,139(5):38~40
    [23] 申长雨,陈静波,刘春太等.气体辅助注射成型流动过程的CRE技术.模具工业,2001,244(6):51~53
    [24] H.E.H. Meijer, F.P.T. Baaijens. Simulaiton of gas-assisted injection moulding. Computation Mechanics, 1998
    
    
    [25] 周华民,张宜生,李德群.气体辅助注射成型充填仿真.应用科学学报.2002,20(3):321~325
    [26] 柳和生.孙燕萍,揭小平.气辅注射成型注气充填数学模型建模和数值模拟的若干关键技术.塑性工程学报.2003,10(2):71~74
    [27] 王利霞,陈静波,刘春太等.气体辅助注射成型过程的数值模拟技术.塑料工业,1998,26(5):15~17
    [28] 李倩,刘春太,申长雨等.气体辅助注射保压过程的数值模拟.中国塑料,2001,15(11):79~82
    [29] Y.P. Chang, S.Y. Hu, S.C. chen. Simulation of gas-assisted injection mold-cooling process using line sourse model approach for gas channel. Heat mass transfer, 1998,25(7):989~998
    [30] Robert E. Farrell. Process analysis for control of injection molding:[Doctor paper].USA: University of Massachusetts Lowell, 2002
    [31] 周华民,张宜生,李德群.气体辅助注射成型气体穿透界面计算机模型研究.力学学报,2002,34(3):328~334
    [32] Yishal Gauri, Kurt W. koelling. The motion of long bubbles through viscoelastic fluids in capillary tubes. Rheology Acta, 1999,38:458~470
    [33] 孙锡红,付沛福,李义等.气辅成型中熔体吹穿的实验模拟研究.中国机械工程,2003,14(3):189~191
    [34] 景作军.计算机辅助设计与工程分析.北京:化学工业出版社,2001
    [35] 辛勇,何成宏,柳和生等.气体辅助注射成型模拟中的CAD/CAE模型转换方法.中国塑料,2000,14(7):91~96
    [36] 魏常武.柳和生,周国发等.气辅注射成型的CAE技术.橡塑技术与装备,2003,29(6):1~5
    [37] Y.M. Deng, Y.C. Lan, S.B. Tor, et. A CAD-CAE Integrated Injection Molding Design System. Engineering with Computers, 2002,18:80~92
    [38] 董斌斌.注塑成型过程CAE的工程技术应用研究:[硕士学位论文].郑州:郑州大学材料加工工程,2002
    [39] 余卫东,陈建.Moldflow技术在注塑成型过程中的应用.计算机辅助设计与制造,2001,6:59~61
    [40] Moldflow Co. Ltd. Moldflow Plastics Insight 4.1 Help System. USA:Moldflow Co. Ltd, 2004
    [41] 张晓黎,吴崇峰,屈春起.气辅注射成型及设计要点.塑料科技,2002,151(5):10~12
    [42] 蔡永洪.工艺参数与气肋设计对气辅注塑成型的影响.塑料科技,2002,150(4):9~12
    [43] 王涛.王鹏驹.气体辅助注射成型制品及模具设计的基本原则.模具工业,226(12):30~33
    [44] 曹宏深,赵仲治,毛华杰等.塑料成型工艺与模具设计.北京:机械工业出版社,1993
    [45] 张华,李德群.气体辅助注射成型气道设计.模具工业,1998,204(2):31~32
    [46] 祝铁丽,王敏杰.气体辅助注射制品的常见缺陷及防治.塑料科技,1999,134(6):14~16
    
    
    [47] Moldflow Korea. Basic Concept for Gas Injection Molding Technology. Gas Technology Application Examples, 2000
    [48] Taylan Altan, Blaine Lilly. Manufacturing of dies and molds. 2003
    [49] Jack Avery. Gas-assisted injection molding. Special molding techniques, Battenfeld Inc, 2002:15~24
    [50] M.A. Parvez, N.S. Ong, Y.C. Lam, et. Gas-assisted injection molding: the effect of process variables and gas channel geometry. Materials processing technology. 2002.121:27~35
    [51] 辛勇,阮雪榆,何成宏等.气辅注射成型中气体穿透下的聚合物熔体壁厚的形成.2003,19(3):63~67
    [52] 屈小中,梁瑞凤,王东燕.聚合物熔体流变性能对气辅注塑工艺的影响.中国塑料,1999,13(4):39~44
    [53] 陈美美.97cm彩电前壳气体辅助注射模.模具工业,1999,220(6):32~36
    [54] 林旭东,王鹏驹.电视机外壳气体辅助注射CAE分析.模具工业,1998,206(4):26~29
    [55] 杜志慧,燕立唐,刘波.气辅注塑CAE模拟技术在汽车保险杠模具设计中的应用.塑料工业,2003,31(10):31~33
    [56] D. M. Gao, K.T. Nguyen, A. Garcia, et. Optimization of the gas-assisted injection moulding process using multiple gas-assisted systems. Journal of Material Processing Technology, 1997, 69:282~288
    [57] 马逢时,何良才,余明书等.应用概率统计.武汉:华中理工大学出版社,2000
    [58] 童恒庆.经济回归模型及计算.武汉:湖北科学技术出版社,1999
    [59] 刘则毅,刘东毅,马逢时等.科学计算技术与Matlab.北京:科学出版社,2001
    [60] 李涛,贺勇军,刘志俭等.Matlab工具箱应用指南——应用数学篇.北京:电子工业出版社,2000
    [61] 王沫然.MATLAB6.0与科学计算.北京:电子工业出版社,2001
    [62] Matlab Co. Ltd. Matlab 6.5 Help System. USA: Matlab Co. Ltd, 2003

© 2004-2018 中国地质图书馆版权所有 京ICP备05064691号 京公网安备11010802017129号

地址:北京市海淀区学院路29号 邮编:100083

电话:办公室:(+86 10)66554848;文献借阅、咨询服务、科技查新:66554700