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Color mixing 3D printing nozzle device based on FDM technology and discharging method thereof

A 3D printing and color mixing technology, which is applied to coating devices, 3D object support structures, additive manufacturing, etc., can solve the problems of post-processing coloring, etc., and achieve the effects of uniform color mixing, high reliability, and low cost

Inactive Publication Date: 2019-11-12
HANGZHOU DIANZI UNIV
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

Therefore, there are defects in the prior art that it is necessary to replace nozzles or consumables and to perform post-processing and coloring on the model to achieve mixed-color printing.

Method used

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  • Color mixing 3D printing nozzle device based on FDM technology and discharging method thereof
  • Color mixing 3D printing nozzle device based on FDM technology and discharging method thereof
  • Color mixing 3D printing nozzle device based on FDM technology and discharging method thereof

Examples

Experimental program
Comparison scheme
Effect test

Embodiment 1

[0038] Such as figure 1 As shown, the color mixing 3D printing nozzle device based on FDM technology includes a feeding mechanism and a mixing heating mechanism. The feeding mechanism includes a feeding shell 4, a feeding guide block 2, a feeding conduit 1 and a feeding drive assembly. The feed shell 4 is provided with a plurality of vents. The feed guide block 2 is fixed on the top of the feed shell 4 inner cavity. Two feeding passages are opened on the feeding guide block 2 . The inner ends of the two feed conduits 1 extend into the two feed passages on the feed guide block 2 respectively, and are respectively fixed by conduit set screws 3 .

[0039] Such as figure 1 and 2As shown, the feeding drive assembly includes a feeding motor 5 , a driving conveying wheel 11 , an extruding conveying wheel 12 , an extruding slider and an extruding spring 10 . The drive conveyor wheel 11 is supported in the feed housing 4 . The feeding motor 5 is fixed in the feeding shell 4, and...

Embodiment 2

[0052] On the basis of Embodiment 1, the color-mixing 3D printing nozzle device based on FDM technology also includes two independent heating blocks 20 . The tops of the two independent heating blocks 20 are provided with threaded holes corresponding to the bolts 15 on the two heating guide pipes 13 . The independent heating block 20 is provided with a vertically arranged heating channel. The independent heating block 20 is provided with a heating hole 7-3 and a temperature detection hole 7-4. The heating hole 7-3 is provided with a heating wire. A temperature sensor is arranged in the temperature detection hole 7-4. Nozzles are provided at the bottoms of the heating channels in the two independent heating blocks 20 .

[0053] By removing the heating mixing block 7 and installing independent heating blocks 20 on the bottoms of the two heating guide tubes 13, independent printing of two colors of 3D printing filaments can be realized.

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Abstract

The invention discloses a color mixing 3D printing nozzle device based on an FDM technology and a discharging method thereof. Color mixing printing can realize the color of a product and has more advantages compared with single-color printing. The color mixing 3D printing nozzle device based on the FDM technology comprises a feeding mechanism and a mixing heating mechanism. The feeding mechanism comprises a feeding shell, a feeding guide block and a feeding driving assembly. The feeding driving assembly comprises a feeding motor, a driving conveying wheel, an extruding conveying wheel, an extruding sliding block and an extruding spring. The mixing heating mechanism comprises a heating mixing block, a heating guide pipe, a color mixing stirrer, a nozzle, a cooling fin and a heating wire. The color mixing stirrer comprises a connecting shaft, a stirring fan and a stirring motor. According to the two-inlet-one-outlet type color mixing nozzle device, two thermoplastic wire yarns with different colors can be sent to a color mixing cavity of the heating mixing block for color mixing by controlling the mixing proportion of different color wire yarns or setting the change trend of the mixing proportion.

Description

technical field [0001] The invention belongs to the technical field of 3D printing equipment, and in particular relates to a color-mixing 3D printing nozzle device based on FDM technology. Background technique [0002] Since entering the 21st century, how to improve productivity and manufacturing level has become one of the main focuses of the global industry. As an innovative additive manufacturing (AM) technology, 3D printing produces components directly through pre-designed digital CAD models without additional tool cutting or fixture positioning assembly technology. For high-quality and complex-shaped products , can be formed layer by layer in a short period of time, with low cost and high material utilization. Therefore, the development of 3D printing manufacturing technology will help to enhance the country's innovative and creative capabilities and the level of intelligent manufacturing. [0003] There are various types of 3D printing technology, which can be divide...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): B29C64/209B29C64/295B29C64/118B33Y30/00
CPCB33Y30/00B29C64/118B29C64/209B29C64/295
Inventor 杜林烽刘雷陈延凯
Owner HANGZHOU DIANZI UNIV
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