A three-dimensional printing device and its control method

Abstract

The invention discloses a three-dimensional printing device, which includes a forming tank and a printing powder pushing plate located in the forming tank, and a first spray head and a second spray head are arranged above the forming tank; the first spray head is used to spray the first glue; The second spray head is used for spraying the second glue; the first glue and the second glue are mixed to produce stickiness. The invention also discloses a control method of a three-dimensional printer. When printing powder printing, one nozzle sprays a glue on a position on the printing material, and then another nozzle sprays another glue on the same position on the printing material. Two kinds of glue, the binder formed by mixing the two glues realizes the bonding of the printing powder, and this cycle completes the entire printing process.

Description

technical field [0001] The invention relates to the field of advanced processing and manufacturing, in particular to a three-dimensional printing device and a control method thereof. Background technique [0002] At present, 3D printers based on 3DP technology mainly use piezoelectric nozzles and thermal foaming nozzles to spray binders on demand to bond powder materials, thereby achieving three-dimensional modeling. However, piezoelectric nozzles use high-viscosity adhesives. When the adhesive is used, the high viscosity will lead to insufficient precision of the printed object, and the use of a lower viscosity adhesive will produce satellite droplets, causing defects. At the same time, the printed object has poor mechanical properties and cannot meet the needs of normal use. The working principle of the thermal foaming nozzle determines that it is more suitable for binders with lower viscosity. In order to achieve a better three-dimensional molding effect of the model, it ...

AI Technical Summary

Problems solved by technology

[0002] At present, 3D printers based on 3DP technology mainly use piezoelectric nozzles and thermal foaming nozzles to spray binders on demand to bond powder materials, thereby achieving three-dimensional modeling. However, piezoelectric nozzles use high-viscosity adhesives. When the adhesive is used, the high viscosity will lead to insufficient precision of the printed object, and the use of a lower viscosity adhesive will produce satellite droplets, causing defects. At the same time, the printed object has poor mechanical properties and cannot meet the needs of normal use.

The working principle of the thermal foaming nozzle determines that it is more suitable for binders with lower viscosity. In order to achieve a better three-dimensional molding effect of the model, it is necessary to modify the surface of the powder material to be printed, which increases the processing cost and makes The material preparation process is complex

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