A Study of Super Precise Injection Molding Technique Assisted by Radiation Energy

辐射能辅助超精密注射成型技术研究

基本信息

批准号：
08555052
负责人：
KUROSAKI Yasuo
金额：
$ 12.03万
依托单位：
THE UNIVERSITY OF ELECTRO-COMMUNICATIONS (1997-1998)Tokyo Institute of Technology (1996)
依托单位国家：
日本
项目类别：
Grant-in-Aid for Scientific Research (A)
财政年份：
1996
资助国家：
日本
起止时间：
1996 至 1998
项目状态：
已结题

项目摘要

In this research project, usage of infrared radiation energy was proposed to significantly improve the total quality of the injection molded polymer products. CO2 laser provided from the outside of the mold cavity was introduced through an optically transparent window of Zinc-selenide installed in the mold to prevent temperature drop of the molded polymer melt during the filling stage. Feasibility and effectiveness of this method was investigated and discussed through the experimental molding as well as the numerical heat transter analysis. In the first year, improvement of the residual birefringence (one kind of optical strain) in the products and transcription ability on product surface was experimentally studied by using the method. In the second year, temperature distribution within the molded polymer melt under irradiated was numerically estimated to make the characteristics clear, and improvement of the flow limitation in a thin flow path was experimentally studied. In the third year (final year), thin disk molding that simulates the practical process was performed according to the results obtained in the previous two years to give a general discussion for this method. And usage of a halogen lamp was tried and studied to propose a cheaper system that seemed to be desirable for the practical use. The results obtained in this research project are summarized as below :1. This method can significantly decrease the residual birefringence within the products.2. This method can considerably improve the transcription ability on the molded polymer surface that followed the fine mold wall geometry.3. This method can maintain flow ability in a quite thin flow path.4. This method can realize above advantages without considerable elongation of the process cycle time.5. This method can be achieved with some other radiation source by choosing appropriate molding material and transparent mold window.

在该研究项目中，提出了红外辐射能的使用，以显着提高注射成型聚合物产品的总质量。从模具腔外提供的二氧化碳激光是通过安装在霉菌中的锌 - 塞林尼的光学透明窗口引入的，以防止在填充阶段的模压聚合物熔体的温度下降。通过实验成型以及数值转移分析研究和讨论了该方法的可行性和有效性。在第一年，使用该方法对产品表面上的剩余双折射（一种光学应变）的改善和转录能力进行了改善。在第二年，按数值估计，在辐照下熔化的成型聚合物熔体内的温度分布使特性清晰，并且对薄流道路中的流动限制的改善进行了实验研究。在第三年（最后一年），根据前两年获得的结果进行了模拟实际过程的细磁盘成型，以对此方法进行一般讨论。并且对卤素灯的使用进行了尝试和研究，以提出一个更便宜的系统，该系统似乎是可用于实际使用的。该研究项目中获得的结果总结如下：1。该方法可以显着降低产品内的残留双折射。2。这种方法可以大大提高遵循细霉菌几何形状的模制聚合物表面上的转录能力。3。该方法可以在相当薄的流道中保持流动能力4。这种方法可以实现上面的优势，而不会大量延长过程周期时间5。通过选择适当的成型材料和透明的模具窗口，可以通过其他一些辐射源来实现此方法。