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CSME 2024/06
Volume 45 No.3
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263-277
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Research on the Design of Cooling system and Optimization of Process Parameters of Automobile Front Door Sill Press Plate Injection Mold
Lu Wanga, Lingfeng Tang and Qidi Keb
aSchool of Mechanical Engineering, Anhui Polytechnic University, Wuhu, Anhui 241000, China.
bStudent, School of Mechanical Engineering, Anhui Polytechnic University, Wuhu, Anhui 241000, China.
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Abstract:
In the injection molding process, the design of the injection mold cooling system and the optimization of its injection process parameters are key tasks that affect the efficiency and quality of injection molding in order to improve the efficiency and quality of product molding. This article takes the front door sill pressure plate of automobile as the research object, and establishes the orthogonal test with the diameter of water channels, the distance between cooling channels and the distance between cooling channels and products as the experimental factors, and the temperature difference of circuit coolant and the time for the part to reach the ejection temperature as the evaluation index. Using grey correlation analysis, extreme difference analysis to determine the optimal cooling system. And the optimal Latin hypercube test was designed, and the interaction effects and main effects plot analysis of each test index were carried out based on the results of Pareto plot analysis. With the melt temperature of 215℃ and packing pressure of 47.5MPa as the center to design the octagonal isometry experiment, establish the response surface model equations of volume shrinkage and warpage deformation, and iteratively find the optimal set of process parameters by the genetic algorithm: the melt temperature 194.25℃, mold temperature 39.66℃, coolant temperature 26.21℃, coolant flow rate 12.83L/min and packing pressure 53.95MPa. The optimized loop coolant temperature difference was 2.16°C, and the time for the part to reach the ejection temperature was 34.45 s. The volume shrinkage and warpage were reduced by 20.06% and 15.22%, respectively. The part forming efficiency and quality were significantly improved.
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Keywords: cooling system, orthogonal test, second- order response surface, genetic algorithm.
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*Corresponding author; e-mail:
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©
2024
CSME , ISSN 0257-9731
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