Establishment of Reasonable Processing Parameter Evaluation System for Injection Molding-Filling Module

• Main Authors: Chih-Hung Chung, 鍾志鴻
• Other Authors: Yaw-Jen Chang
• Format: Others
• Language: zh-TW
• Published: 2010
• Online Access: http://ndltd.ncl.edu.tw/handle/5g8833

碩士 === 中原大學 === 機械工程研究所 === 98 === In the industry of plastic injection molding, because of the diversity of the variation of products, the process parameter has to set its own process parameter for each product. These setting of trouble shooting and process parameters have to depend on master craftsmen who have several years of experiences to make the process of trouble shooting proceed successfully to find out the best condition of processing parameter. However, because of the increasing turnover rate, the increasing speed and variability of product development as well as the increasing precision, these setting and adjustment of the process parameters can not follow the old pattern which used to count on master craftsmen’s instincts and experiences for a long time. According to the simple and basic calculation of the empirical theory as well as the huge database and calculation of the CAE analysis, we can set up the molding window in the workable molding parameter system. In the context, we design a strip model with different thickness and L/t. Through the result of the CAE analysis and the slit flow theory for calculation, we can get simple process parameter assessment such as the best injection time and the injection pressure. What’s more, we can also gain the element of theory calculation and simulation analysis revision as well as recommended plastic viscosity and recommended molding window not only for the injection pattern of the shooting process parameter system but also for the industry to be a basis of its molding.