시뮬레이션 분석을 이용한 사출성형 중 사출구간에서의 금형 변형량 예측 및 실험적 검증에 관한 연구 A Study on the Experimental Verification and Prediction of Mold Deformation at Injection Stage during Injection Molding through Simulation Analysis
pp.1061-1074
In this study, in order of to reflect the mold deformation in the injection molding process to design of mold, the mold deformation was analyzed by performing flow and structural analysis. The 5 inch LGP(light guide plate) mold, platen and tie bar were modeled and applied to the analysis. The result of melt pressure from flow analysis was extracted for use as boundary conditions acting on the mold surface in the structural analysis. In order to evaluate the accuracy of simulation analysis results, injection molding was performed under the process conditions of simulation. As a results, the mold deformation during injection molding tends to be similar that of injection pressure, and it is confirmed that it shows the behavior and properties of melt resins. Compared with the simulation and experiment, the error of the maximum mold deformation in the injection phase was 4.20%.