| 精密注射成型中背压对制品重复精度的影响 |
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| 引用本文： | 赖士兴,杨卫民,丁玉梅,谢鹏程,耿立波,王兴天.精密注射成型中背压对制品重复精度的影响[J].中国塑料,2006,20(12):52-55. |
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| 作者姓名： | 赖士兴 杨卫民 丁玉梅 谢鹏程 耿立波 王兴天 |
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| 作者单位： | 北京化工大学机电工程学院,北京100029 |
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| 基金项目： | 北京市自然科学基金资助项目（编号;3052013） |
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| 摘 要： | 通过对空注射方式对影响精密制品质量重复精度之一的背压进行实验和理论研究。研究发现背压对螺杆塑化能力的影响明显，螺杆射退和多级背压对提高制品重复精度和质最稳定性效果显著。同时研究了不同物料对重复精度的影响，基于实验结果提出了提高制品质量重复精度的措施。
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| 关 键 词： | 精密注射成型 背压 重复精度 |
| 文章编号： | 1001-9278（2006）12-0052-04 |
| 收稿时间： | 2006-08-20 |
| 修稿时间： | 2006-08-20 |
Effect of Back Pressure on Repeating Accuracy of Precision Injection Molded Parts |
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| LAI Shi-xing, YANG Wei-min, DING Yu-mei, XIE Peng-cheng, GENG Li-bo, WANG Xing-tian.Effect of Back Pressure on Repeating Accuracy of Precision Injection Molded Parts[J].China Plastics,2006,20(12):52-55. |
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| Authors: | LAI Shi-xing YANG Wei-min DING Yu-mei XIE Peng-cheng GENG Li-bo WANG Xing-tian |
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| Affiliation: | School of Mechanical and Electrical Engineering, Beijing University of Chemical Technology, Bejing 100029, China |
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| Abstract: | The effect of back pressure on the weight precision in injection molding was investigated via experiments of injecting to air. It was found that back pressure promoted plasticizing ability of screw clearly. Pullback and multi-stage back pressure also contributed to improving the precision of part weight and the stability of the parts. The effect of different materials on the weight precision was also studied. |
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| Keywords: | precision injection molding back pressure repeating accuracy |
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