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Research on Warpage of Injection Molded Part and Its Optimization

Author: RenShuangNing
Tutor: ZhangYiHua
School: Nanjing University of Aeronautics and Astronautics
Course: Aviation Aerospace Manufacturing Engineering
Keywords: Injection molding Warpage Process optimization Structural optimization Nursing wind circle
CLC: TQ320.662
Type: Master's thesis
Year: 2011
Downloads: 89
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Abstract


Warpage of injection molded parts with the entire injection molding process is closely related to its size is cumulative of the entire molding process , injection molding process is related to many factors and plastic characteristics of the parts structure , the mold structure and the injection molding process parameters , so the injection molded parts warpage problem becomes very complex . Nursing wind circle automotive cooling system parts , due to its own structure and complexity of the molding process , resulting after injection molding prone to flash , short shot, warpage , especially warpage most difficult to control . From two aspects of the process parameters and structural characteristics of the nursing wind circle products warpage in-depth research , the main content and conclusions are as follows : ( 1) using a combination of the orthogonal experiments and numerical simulation , and analysis of multi- the influence of process parameters on the nursing wind circle warpage , filter out the significant process parameters warpage , get the best combination of process parameters , and through changes in the single factor further test analysis of process parameters the warpage impact trend. ( 2 ) analysis of a retaining wall thickness of the wind circle , strengthen tendons , poles and masks and other structural features of its warpage , help reduce the wind circle warpage care structure to optimize the design criteria and proposed a series of on the the original nursing wind loop structure optimized design . (3 ) Comparison of process parameters and structural characteristics of the degree of influence of the workpiece warpage found that the process parameters can only be adjusted within a certain range in a relatively small extent due to the materials used in forming the window narrower optimization workpieces warpage parts structure optimization largely significant decrease warpage of parts .

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