Motion control for uniaxial rotational molding
Citations Over Time
Abstract
Abstract Motion control parameters of rotational molding can affect process efficiency and product quality. Different motion control schemes will lead to varied powder flow regimes exhibiting different levels of mixing and temperature uniformity. The change in nature of powder flow during a molding cycle suggests that varying the rotational speed could improve the powder mixing and temperature uniformity, therefore potentially reducing processing time and energy consumption. Experiments completed investigating powder flow under uniaxial rotation show that savings of up to 2.5% of the heating cycle time can be achieved. This validates the hypothesis that altering the rotational speed to maintain the ideal powder flow throughout the heating cycle can be utilized to reduce the time taken for all the polymer powder to adhere to the mold wall. The effect of rotational speed on wall thickness uniformity and impact strength were investigated and discussed. Results show a strong influence of rotational speed (and powder flow) on the wall thickness uniformity of the moldings with wall thickness uniformity deviations of up to 50% found (within the 2–35 RPM speed range tested).
Related Papers
- → Improving the Performance of 3D Printed Molds for Plastic Injection Molding(2019)4 cited
- Research on twice molding technology of PDMS based on microfluidic chip structure(2012)
- 자동차용 Band Cable의 유동성 향상에 관한 연구(2010)
- Study of the NURBS Describing Method on the Mold Cavity of the Molding Tool(2007)
- → Analysis of Bolster and Stripper Assembly of High Pressure Molding Machine(2018)