Success Story
The customer, Minebea AccessSolutions Thai Ltd., faced an issue with the warpage of plastic injection-molded parts not meeting specifications due to high warpage values. This prevented the parts from being assembled with glass. Initial attempts to adjust the injection parameters did not yield results within the specified tolerances. 3D scans revealed that the parts had high warpage values and did not meet the desired specifications.
The issue of warpage was analyzed using Autodesk Moldflow simulation software, which identified that warpage resulted from unbalanced plastic flow, inconsistent pressure, and overpacking due to a Hesitation effect in areas with low thickness.
The Solution for this project:
• Autodesk Moldflow was used to simulate the problem and suggest solutions. Minibea AccessSolutions accepted these suggestions and implemented them. This included increasing thickness in areas prone to Hesitation to achieve balanced flow.
• Autodesk Moldflow was used for process optimization to find the most suitable injection conditions.
Two outcomes from this project:
• Warpage was significantly reduced, meeting specifications.
• The use of Autodesk Moldflow proved successful in resolving the issue.
The technology of plastic injection molding is crucial in the manufacturing industry and has a significant impact on the quality and precision of the products we use in our daily lives. In this article, we explore how to use Autodesk Moldflow software to analyze and improve the plastic injection process, using real-life examples from industrial experiments. Minibea AccessSolutions faced an issue with the warpage of plastic injection-molded parts not meeting specifications due to high warpage values. Autodesk Moldflow was used to simulate the problem and suggest solutions. Minibea AccessSolutions accepted these suggestions and implemented them. From results, warpage was significantly reduced, meeting specifications. The new injection parameters, as recommended by Moldflow, reduced Fill time by 1 second and increased the maximum Pressure to 95 MPa compared to the previous conditions of 2 seconds Fill time and 90 MPa Pressure. The use of Autodesk Moldflow proved successful in resolving the issue.
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