An in-mold orientation and magnetizing mold and method for injection molded magnets
By forming a closed, independent magnetic circuit inside the mold and applying current pulses using multiple independently controlled coils, the problems of long magnetic circuit paths and high magnetic resistance in traditional injection-molded magnets are solved, achieving efficient utilization of magnetic field energy and improved magnet performance.
Patent Information
- Authority / Receiving Office
- CN · China
- Patent Type
- Applications(China)
- Current Assignee / Owner
- GUOKE RE ADVANCED MATERIALS CO LTD
- Filing Date
- 2026-04-02
- Publication Date
- 2026-07-17
AI Technical Summary
In the traditional injection molding process of magnets, the magnetic circuit path is long, the magnetic resistance is high, and the energy consumption is high. It is difficult to use pulsed magnetic fields for orientation and magnetization, resulting in low energy utilization efficiency and low production efficiency.
The magnetizing fixture is integrated into the mold body to form a closed and independent magnetic circuit. An independent closed magnetic circuit is formed in the mold using an electromagnetic coil and a magnetic yoke. Magnetic particles are oriented and magnetized by applying time-separated current pulses through multiple independently controlled coils.
It significantly improves the efficiency of magnetic field energy utilization, simplifies the production process, enhances magnet performance and production stability, realizes the efficient application of pulsed magnetic fields, and enables orientation and magnetization to be completed in one go within the mold.
Smart Images
Figure CN122417660A_ABST