Precise powder laying device of rapid laser powder forming machine

Abstract

The invention relates to a precise powder laying device of a rapid laser powder forming machine. The precise powder laying device of the rapid laser powder forming machine comprises a basic installing plate, a powder laying roller, a powder laying roller rotating device used for driving the powder laying roller to rotate, a powder laying roller sliding device used for driving the powder laying roller to walk in a reciprocating mode and a powder laying moving tank device. The powder laying moving tank device comprises a powder laying falling tank base and a powder laying falling tank moving receiving bucket; the upper portion of the powder laying falling tank base is provided with a powder tank body, the two sides of the powder laying falling tank base are provided with a left falling tank and a right falling tank, and the powder laying falling tank moving receiving bucket comprises a left receiving bucket body and a right receiving bucket body; the powder laying falling tank moving receiving bucket is arranged in the powder tank body of the powder laying falling tank base, and moves left and right in the powder tank body of the powder laying falling tank base to enable the left receiving bucket body and the right receiving bucket body to correspond to the left falling tank and the right falling tank of the powder laying falling tank base respectively at different time. The precise powder laying device of the rapid laser powder forming machine has the advantages that the powder laying device is controlled in a powder laying stroke powder laying area, selective powder laying is achieved, the powder utilization ratio is improved, and the powder laying precision and the finished product forming precision are improved.

Description

technical field [0001] The invention belongs to laser powder rapid forming equipment, in particular to a precision powder spreading device for a laser powder rapid forming machine. Background technique [0002] At present, 3D printing technology is rapidly emerging, and laser powder rapid prototyping is a relatively mature 3D printing method. The laser powder rapid prototyping process is to spread a layer of powder material on the upper surface of the formed part by using a powder roller, and heat it to a certain temperature just below the sintering point of the powder. The control system controls the laser beam according to the cross-section of the layer. The profile is scanned over the powder, which heats the powder to its melting point, where it sinters and bonds with the shaped part below. After the sintering of a layer of cross-section is completed, the workbench is lowered by one layer of thickness, and the powder spreading roller spreads a layer of uniform and dense ...

AI Technical Summary

Problems solved by technology

The current powder spreading device fully spreads the powder on the printing plane in each powder spreading stroke, the powder spreading area is large, and the amount of powder spreading is large; and the larger the powder spreading area, the lower the powder spreading accuracy, and the forming of the finished product The accuracy is also lower. At the same time, a large amount of unsintered powder circulates in the equipment, plus the amount of powder used in the printing process, and a large amount of recycled powder that is not used after being heated will consume a lot of energy.

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