An integrated powder color 3D printer

Abstract

The invention discloses an integrated powder color 3D (Three-Dimensional) printer. The integrated powder color 3D printer comprises a rack, wherein a powder storage tank and an external supply adhesive box are arranged at the top of the rack; the powder storage tank and the lower part of the external supply adhesive box are connected with a working cavity; the lower part of the working cavity is connected to a sealing post-processing cavity through a partitioning plate; a sieve screen and a powder recycling box are arranged at the lower part of the sealing post-processing cavity; a lifting device is connected to the rack at the sealing post-processing cavity; the lifting device is connected with a vacuum negative-pressure support table; the vacuum negative-pressure support table comprises an upper screen plate, a sealing felt, a lower screen plate, an air filtration screen and a bottom cavity. The integrated powder color 3D printer is capable of guaranteeing the sealing property and the mobility and safely transferring parts; meanwhile, a sealing post-processing table in the powder 3D printer, and thus the removal of powder is facilitated, the working amount of workers and the environmental pollution are reduced, the integration of the machine is improved and the cost is reduced.

Description

technical field [0001] The invention relates to the field of powder 3D printers, in particular to an integrated powder color 3D printer. Background technique [0002] Powder 3D printing (3DP) is a 3D printing method that utilizes droplet jetting, powder bonding technology. Under the control of the computer, according to the information of the current layered cross-section, the nozzle selectively sprays the binder on the pre-laid layer of powder material, so that part of the powder is bonded to form a thin layer of cross-section; After completion, the workbench is lowered by one layer thickness, and the next layer of powder is spread, and then the adhesive is sprayed on the selected area, and the formed thin layer will also be bonded to the formed part at the same time; this process is continuously cycled until the part is processed; Usually the formed parts also need certain post-processing, such as drying, sintering, etc., so as to obtain the final parts. However, the exi...

AI Technical Summary

Problems solved by technology

The former method requires multiple cylinders, which will result in larger equipment volume. Although the latter method can greatly save the machine space, it needs to regularly supply powder to the funnel, and the required operation and control process is complicated.

[0005] 3. For powder 3D printers, the density of the powder laid out will greatly affect the strength of the produced parts and the shrinkage rate after sintering. Existing machines provide vacuum negative pressure chambers to absorb powder, but their structures are simple , cannot be disassembled, which is not conducive to the subsequent operation of the parts

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