Powder supply device for basic shaft type metal 3D printer

Abstract

The invention discloses a powder supply device for a basic shaft type metal 3D printer. The powder supply device is characterized by comprising a screening machine and a metering powder feeding device; a first discharging port and a second discharging port of the screening machine are communicated with a feeding port of the metering powder feeding device through powder feeding pipes; a vacuum conveyor is arranged on a powder feeding pipe between the screening machine and the metering powder feeding device; a discharge port of the metering powder feeding device is communicated with a powder supply port through the powder feeding pipe; and a vacuum conveyor is arranged on the powder feeding pipe between the metering powder feeding device and the powder supply port. The powder supply device for the basic shaft type metal 3D printer is simple in structure and convenient to use; the powder screening machine and the metering powder feeding device are used in cooperation; operation such as screening, metering and conveying can be efficiently conducted on metal powder; the screened and qualified metal powder is provided into a powder spreading device of an SLM metal printer or a powder cylinder of a printing cavity; and a series of operations such as automatic screening, metering and conveying are realized.

Description

technical field [0001] The invention relates to the technical field of 3D printing equipment, in particular to a powder supply device for a shaft-based metal 3D printer. Background technique [0002] Metal 3D printing technology has the advantages of personalized design, fast forming, and short manufacturing cycle. It is very suitable for the manufacture of small batches, personalized metal parts with complex surfaces and internal structures. In the process of 3D printing metal powder, high energy density The laser directly acts on the metal powder, and the laser scans quickly to make the metal powder melt and condense quickly. [0003] During the use of metal 3D printers, it is necessary to continuously transport the metal powder for printing to the corresponding powder bin to ensure its continuous operation. In order to ensure the smooth progress of printing and to meet different quality requirements, different prints Metal powders of different particle sizes need to be u...

AI Technical Summary

Problems solved by technology

[0003] During the use of metal 3D printers, it is necessary to continuously transport the metal powder for printing to the corresponding powder bin to ensure its continuous operation. In order to ensure the smooth progress of printing and to meet different quality requirements, different prints Metal powders of different particle sizes need to be used, so it is necessary to sieve the metal powder delivered to the printer to meet the use requirements of the equipment; at the same time, a large amount of recycled metal powder will be produced after printing, but the particle distribution range of the recycled metal powder wide, it needs to be sieved before it can be used, and the powder sieving machine in the prior art has low powder sifting efficiency and cannot meet the requirements of the printer

[0004] Metal 3D printers need to continuously transport the metal powder for printing to the corresponding powder bin during use. In order to avoid the waste of metal powder and combine the size of the printer’s powder storage bin, quantitative powder feeding is generally used in the actual work process. Inject metal powder, but the filling equipment used in the prior art needs to use a large number of electronic components on the one hand, resulting in high complexity and high price of the equipment; Intermittent powder feeding method, low powder feeding efficiency

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