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Gas Assisted Injection Molding Simulation Process Parameters Optimized and System Design

Author: YuanLeJian
Tutor: MaoHuaJie
School: Wuhan University of Technology
Course: Materials Processing Engineering
Keywords: Gas-assisted injection molding CAE Orthogonal test Optimization of process parameters Computing systems
CLC: TQ320
Type: Master's thesis
Year: 2006
Downloads: 128
Quote: 7
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Abstract


This article by gas-assisted injection molding process systems research, and practical problems in the field of gas-assisted injection molding process, the design of a more comprehensive solution gas-assisted injection molding process; analysis of the air outlet duct structure, gas injection parameters on molding process of law; summarized the gas injection parameter optimization settings formula, and the preparation of process parameters of gas-assisted design computing systems, ease of ordinary skill in the application. In gas-assisted injection molding design and craftsmanship, combined with gas-assisted injection molding design and technology practice research, in-depth analysis of the gas-assisted injection molding process and the gas penetration characteristics, wall thickness design for gas-assisted injection molding process product structure design, the layout and size of the airway design, mold design and molding process parameters setting forth a set of system design reference standards. With different airway equivalent radius CAD model of airway length of a typical gas-assisted injection molding parts, by adopting a more mature plastic molding CAE software MPI on gas-assisted injection molding process parameters design optimization: several common shape model simulation of gas-assisted injection molding process. Determine key factors and indicators of orthogonal experiment, arranged the the orthogonal test program table, the use of multi-factor multiple indicator orthogonal experimental method to analyze the melt pre-injection volume, delay time, gas dwell time, process parameters such as gas injection pressure molding results of the impact of the primary and secondary order; equivalent to adjust the process parameters of the primary and secondary order, so that the molding quality products not only guarantee to achieve user requirements, but also the efficiency of the production of the product can achieve the highest; According to the results, extract the airway radius, the length of the airway corresponds with the the airway structural design size gas-assisted injection molding process parameters using the method of mathematical analysis to establish the airways equivalent radius of the length of the airway the airway structure size gas-assisted molding process parameters between function formula. Under the guidance of the relationship of these functions, you can calculate the gas injection parameters optimized set value and airway penetration length of the predicted value. Function relationship in two ways by the laboratory model and the actual product model verification, validation results show that the resulting function relationship has better prediction accuracy and reference value. VB is a system platform developed outlet and auxiliary process parameters design computing systems, this ordinary engineering technicians do not have to be familiar with the gas-assisted process airway structural dimensions given for product designers can take advantage of the software directly calculated gas injection parameter optimization to set the value. This greatly facilitate the promotion and popularization of the gas-assisted process.

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