Spray printing module suitable for three-dimensional forming mechanism

Abstract

The invention relates to a spray printing module which is suitable for a three-dimensional forming mechanism. 20 to 120 micrometers of powder granules are paved in the three-dimensional forming mechanism. The spray printing module at least comprises a spray printing box and a spray printing control circuit, wherein the spray printing box is provided with a spray orifice sheet and a spray printingchip; and the spray orifice sheet has a plurality of spray orifices. The spray printing module is characterized in that: pore diameters of the spray orifices are between 15 and 20 micrometers; when the driving voltage of the spray printing chip is controlled to be between 12 and 15 volts; and when 1.4 to 2.0 microseconds of heating pulse voltage is transmitted to the spray printing chip by the spray printing control circuit, the spray orifices spray liquid drops of which the diameters are between about 64 and 68 micrometers to cover at least over 2 / 3 surface areas of the powder granules.

Description

technical field [0001] The invention relates to a jet printing module, especially a jet printing module suitable for a three-dimensional forming mechanism. Background technique [0002] Rapid prototyping technology (RP technology for short) is developed based on the concept of building a pyramid layer by layer. Its main technical feature is the rapidity of forming, and it can be molded without any tools, molds and fixtures. Automatically and quickly transform the design scheme of any complex shape into a 3D solid model. [0003] At present, RP technology has developed a method of using jet printing technology combined with vehicle precision positioning technology to produce 3D solid models. The production method is to first lay a layer of powder on the top of the vehicle and use inkjet printing technology to print on part of the powder. The high-viscosity adhesive liquid makes the adhesive liquid and powder adhere and solidify, and the 3D solid model can be completed by rep...

AI Technical Summary

Problems solved by technology

[0006] The main purpose of the present invention is to provide a spray printing module suitable for three-dimensional forming mechanism, so as to solve the problem that the amount of spray liquid sprayed by the printing nozzle dedicated to the 2D plane at one time can only cover about 1 / 3 of one three-dimensional powder particle. 3 The area of ​​the surface requires multiple printings on the same powder particle, resulting in waste of time, discontinuous colors caused by multiple printings, resulting in poor printing quality and relatively shortened print head life.

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