A quick automatic die changing system and method for a neodymium iron boron forming press

By employing a collaborative mechanism of segmented electronically controlled demagnetization, self-inspection, and multi-point detection, combined with a lifting and separation mechanism and machine learning, the problems of incomplete demagnetization and insufficient adaptive capability during the mold changing process of NdFeB magnetic field presses have been solved. This has enabled rapid, reliable, and intelligent mold changing of NdFeB magnetic field presses, improving production efficiency and safety.

CN122417664APending Publication Date: 2026-07-17MIANYANG JUXING PERMANENT MAGNET MATERIAL CO LTD
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Patent Information

Authority / Receiving Office
CN · China
Patent Type
Applications(China)
Current Assignee / Owner
MIANYANG JUXING PERMANENT MAGNET MATERIAL CO LTD
Filing Date
2026-06-04
Publication Date
2026-07-17

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Abstract

本发明公开了一种钕铁硼成型压机的快速自动换模系统及方法，属于钕铁硼模具换模技术领域，包括压机工作台、电永磁吸盘单元、磁场干扰检测单元、分段退磁控制单元、顶升分离机构及顶升控制模块。电永磁吸盘单元由多个独立可控的永磁磁极阵列构成；磁场干扰检测单元实时监测各区域外部磁场强度；分段退磁控制单元根据检测值对各阵列独立施加差异化退磁脉冲，形成分段电控退磁；退磁效果自检子模块通过检测脉冲判断剩余磁通并触发二次退磁；顶升过程中多点接触式微动检测模块实时反馈接触压力与位移，对残余吸附区域执行局部增强退磁后分两段顶升完成释放。本发明解决了强磁场环境下电永磁吸盘退磁不可靠、换模耗时长、缺乏自适应等问题。
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