A magnetic force polishing device for recovering a steel needle by negative pressure air flow and a steel needle recovery method
The automatic recovery of steel needles through a negative pressure airflow recovery system solves the problems of low steel needle recovery efficiency and safety risks in existing magnetic polishing equipment, and realizes a wear-free, fully automatic steel needle recovery process.
Patent Information
- Authority / Receiving Office
- CN · China
- Patent Type
- Applications(China)
- Current Assignee / Owner
- DONGGUAN ZHONGCHUANG CNC EQUIP TECH CO LTD
- Filing Date
- 2026-05-21
- Publication Date
- 2026-07-17
AI Technical Summary
Existing magnetic polishing equipment struggles to achieve automated, wear-free, and non-contact recycling of steel needles after workpiece grinding, resulting in low efficiency and safety risks.
The system employs a negative pressure airflow recovery system, which includes a centrifugal fan, conveying pipelines, and a steel needle hopper. The steel needles are drawn from the separation zone into the hopper by negative pressure airflow, and then automatically discharged back into the polishing barrel by gravity settling. Combined with the control system, this achieves fully automatic closed-loop recovery.
It achieves wear-free automatic recycling of steel needles, improves the level of automation, avoids the safety risks of manual operation and equipment wear, and enhances production efficiency.
Smart Images

Figure CN122401263A_ABST