At present, most injection molding designers depend on their old experiences in mold design. Due to the diversity and complexity of plastic workpieces and the limited experience of designers, it is difficult to precisely design good-quality products at low cost and in a short period.
Computer Aided Engineering (CAE) analysis techniques are useful for the manufacturing and design of injection molds. The operational tests of injection molds by CAE techniques makes it possible to predict the quality status of plastic products in the forming process of injection molding dies before injection molding. The simulation and analysis using Moldflow instead of operational tests of injection molds at the time of injection mold design help predict the potential defects of injection molds to modify and improve their structure.
Choe Tong Ju, a researcher at the Robotics Institute, has applied CAE simulation analysis to the injection molding of a container into a Hermetia illucens box, and proposed an improved design scheme of die structure.
First, he simulated the flow of plastic melt in the forming chamber. Then, he predicted the best gate position, packing pressure, temperature change, air bubble and weld line position by using the Moldflow software.
Applying the Moldflow to die design helps reduce the cost and the cycle of new product updating by predicting the defects that may occur during the injection process.
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