An additive manufacturing powder replenishment device

By monitoring the distance to the powder surface in real time in the powder replenishment device and calculating the stacking rate in conjunction with the controller, the problems of powder bridging and limited discharge space are solved, realizing automated and stable powder replenishment in the additive manufacturing process, and improving powder uniformity and continuity.

CN122033282BActive Publication Date: 2026-07-10CHINA WEAPON SCI ACADEMY NINGBO BRANCH +1
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Patent Information

Authority / Receiving Office
CN · China
Patent Type
Patents(China)
Current Assignee / Owner
CHINA WEAPON SCI ACADEMY NINGBO BRANCH
Filing Date
2026-04-17
Publication Date
2026-07-10

AI Technical Summary

Technical Problem

Existing powder replenishment devices cannot accurately monitor the powder falling status, and are prone to feeding interruptions due to powder bridging or limited discharge space. They cannot recover autonomously, affecting the automation and stability of additive manufacturing.

Method used

The distance sensor monitors the distance to the powder surface in real time, and the controller calculates the accumulation rate. Closed-loop control is achieved through the flow regulation component and the lifting drive mechanism to identify and break up powder bridging or release discharge space to ensure stable powder replenishment.

Benefits of technology

It enables automated and stable powder replenishment in the additive manufacturing process, reduces the frequency of manual intervention in the equipment, and improves powder uniformity and the continuity of powder replenishment.

✦ Generated by Eureka AI based on patent content.

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Abstract

The application discloses an additive manufacturing powder supplementing device, and aims to solve the problem that the existing device is prone to cause feeding interruption and cannot self-repair dredging when the powder bridging or the limited discharge space. The device comprises a controller and a feeding module, the feeding module is provided with a discharging guide cylinder, a discharging assembly movably arranged in the discharging guide cylinder, a flow regulating assembly and a distance sensor located at the bottom end, and a lifting driving mechanism. The controller obtains the actual falling distance of the powder in real time through the sensor, calculates the powder accumulation rate when the powder falls normally and controls the lifting driving mechanism to follow up and lift in a closed loop, when the accumulation rate is abnormally low, intelligent fault diagnosis is performed according to the comparison result of the actual distance and the second preset distance, and the self-recovery intervention logic of controlling the regulating assembly to reciprocate the opening degree to break the internal bridging or preferentially lifting the discharging assembly to release the external discharge space is executed. The application realizes full-automatic closed-loop powder supplementing, and significantly guarantees the processing continuity.
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