The application of magnetic chucks in plastic injection molding machines can significantly enhance production efficiency and processing stability. Firstly, magnetic chucks can quickly and securely fix molds onto the worktable. Even during high-speed injection and mold opening/closing processes, they maintain precise mold positioning, preventing shifting or vibration and ensuring consistent product dimensions and yield. Secondly, electro-permanent magnetic chucks enable rapid mold adsorption and release, shortening mold changeover time. This is especially suitable for multi-variety, small-batch production, effectively improving machine utilization. Additionally, the clamping process with magnetic chucks eliminates the need for traditional bolts or clamps, reducing manual operation and safety risks, making the operation more convenient and flexible. Furthermore, magnetic chucks do not generate high temperatures or cause deformation during adsorption, avoiding thermal expansion that could affect mold precision and improving injection molding quality. Finally, magnetic chucks are energy-efficient, maintaining magnetic force after magnetization without continuous power supply, reducing energy consumption and extending equipment lifespan. Overall, magnetic chucks not only improve mold changeover efficiency and processing accuracy for injection molding machines but also optimize operational workflow and safety, making them an ideal solution for mold fixation in modern plastic injection production.