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Analysis of Runner System of Injection Mold Design for Wheels of Minicar with CAE Technology

Author: SunDan
Tutor: YanYunHui；KongXiangWei
School: Northeastern University
Course: Mechanical Design and Theory
Keywords: Injection molding Thermal analysis Flow simulation Gating system Weld line UG / MoldWizard Moldflow
CLC: TQ320.66
Type: Master's thesis
Year: 2008
Downloads: 112
Quote: 1
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Abstract


Injection molding is extremely important in the modern plastic industry processing techniques, is adapted to the complexity of the shape of the mass production, the precise dimensional requirements of the plastic products. With the computer software and hardware technology development, Injection Molding CAE technology has also been an unprecedented development. CAE technology can be found before the mold manufacturing problems in the design, change the traditional design methods rely mainly on experience and intuition, repeated test mode, repair mode. Injection molding of engineering analysis software tools, a more in-depth study of the flow of the design involved in the injection molding process, the gate design, the effective improvement of weld lines and toy wheel injection defects. In addition, a preliminary study on the plastic viscosity model, flow theory and numerical methods. This paper studies the content is divided into the following areas: First, an overview of the injection molding, injection mold CAE technology, and technical overview of the development of the injection molding CAE Technology Research and flow simulation. Injection mold flow simulation theory, the mathematical model of the flow process and injection molding model is simplified, easy to numerical solution of the mathematical model, and understanding the impact of various physical variables molding process. Analyzes the runner and gate design theory and methods, based on CAE technology combined with the flow of the polymer flow principle analysis in the design of the runner and gate design, injection mold in applied to instances toy wheel . One of the main tasks of the melt flow simulation molding defects predicted toys wheel defects to weld line system, and the use of CAE technology to effectively control the weld line. Commercial CFD software gating system the temperature field, the relationship of the melt temperature in the flow channel dimensions and the injection completed, reasons further explained weld marks improved. Only by fully understanding the physical meaning of the CAE analysis results as well as the impact of these results on the mold design before 'can make better use of this knowledge to solve problems encountered in the actual production can be seen from the above work; Injection Molding CAE technology of the melt in the mold dynamic simulation analysis, intuitive understanding of the products need maximum clamping force, the position of the maximum injection pressure, as well as products molding weld line and cavitation, targeted optimization of the mold.

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CLC: > Industrial Technology > Chemical Industry > Synthetic resins and plastics industry > General issues > Production process and production technology > Forming
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