Method of slicing and printing colour 3d model

Patent metadata

Field	Value
Publication number	US-2018196407-A1
Application number	US-201715452705-A
Country	US
Kind code	A1
Filing date	Mar 7, 2017
Priority date	Jan 6, 2017
Publication date	Jul 12, 2018
Grant date	—

Abstract

A method of slicing and printing colour 3D model is disclosed. The method includes following steps: loading a model data corresponding to a colour 3D model; adding a pollution-blocking structure next to the colour 3D model; executing a slicing process to the pollution-blocking structure and the colour 3D model for generating a plurality of pollution-blocking slices and a plurality of model slices and configuring colour each of the model slices; and, controlling a modeling nozzle ( 100 ) of a multi-colour 3D printer ( 1 ) to print the pollution-blocking slices and the model slices layer by layer and controlling a coloring nozzle ( 102 ) of the multi-colour 3D printer ( 1 ) to color each of the model slices.

First claim

What is claimed is:

1 . A method of slicing and printing colour 3D model, the method comprising:
a) loading a model data corresponding to a colour 3D model and reading a shape data and a colour data of the model data; b) generating a pollution-blocking structure data corresponding to a color area, the color area surrounding the colour 3D model, or corresponding to a pollution-blocking structure surrounded by the color area, and configuring the pollution-blocking structure data to make the pollution-blocking structure corresponding to the pollution-blocking structure data close to but not in contact with the colour 3D model; c) executing a slicing process to generate a plurality of pollution-blocking slice data corresponding to a plurality of pollution-blocking slices respectively according to the pollution-blocking structure data, to generate a plurality of model slice data corresponding to a plurality of model slices respectively according to the shape data, and to generate a plurality of coloring data according to the colour data, wherein each pollution-blocking slice data, each of the model slice data and each of the coloring data records a mark of layer number respectively; and d) controlling a modeling nozzle ( 100 ) of a multi-colour 3D printer ( 1 ) to print the plurality of external pollution-blocking slices and the plurality of model slices layer by layer according to the plurality of pollution-blocking slice data and the plurality of model slice data, and controlling a coloring nozzle ( 102 ) of the multi-colour 3D printer ( 1 ) to color the model slice printed according to the coloring data of the same layer when the external pollution-blocking slices and the model slices of the same layer are printed completely, wherein the pollution-blocking structure printed is close to but not in contact with the colour 3D model printed.

2 . The method of slicing and printing colour 3D model of claim 1 , wherein the step b is to generate the pollution-blocking structure data corresponding to an external pollution-blocking structure and to configure the pollution-blocking structure data to make the external pollution-blocking structure surround an outer wall of the color area and separated from the outer wall of the color area with an spacing.

3 . The method of slicing and printing colour 3D model of claim 2 , wherein the step b further comprises:
b1) generating the pollution-blocking structure data corresponding to the external pollution-blocking structure; b2) forming a demolition structure or a support outer edge on the external pollution-blocking structure by modifying the pollution-blocking structure data; and b3) adding the external pollution-blocking structure to a position surrounding the outer wall of the color area by modifying the pollution-blocking structure data.

4 . The method of slicing and printing colour 3D model of claim 3 , wherein the step b2 forms a notch on the external pollution-blocking structure.

5 . The method of slicing and printing colour 3D model of claim 4 , wherein the step b2 forms the notch on a part of the color area not surrounded by the external pollution-blocking structure.

6 . The method of slicing and printing colour 3D model of claim 2 , wherein the step d comprises:
d1) controlling the modeling nozzle ( 100 ) to print a layer of the external pollution-blocking slice first, then print the model slice of the same layer according to the pollution-blocking slice data and the model slice data of the same layer; d2) controlling the coloring nozzle ( 102 ) to color a top cross-section of the model slice printed according to the coloring data of the same layer; and d3) repeating executing the steps d1 to the step d2 until all of the external pollution-blocking slices and all of the model slices are printed completely and all of the model slices are colored completely.

7 . The method of slicing and printing colour 3D model of claim 6 , wherein the step d1 controls the modeling nozzle ( 100 ) to execute a scrap retraction, then to print the model slice of the same layer after printing the external pollution-blocking slice.

8 . The method of slicing and printing colour 3D model of claim 2 , wherein the step b comprises following steps:
b4) generating the pollution-blocking structure data corresponding to the external pollution-blocking structure, wherein the external pollution-blocking structure is hollow and a thickness of a blocking wall part of the external pollution-blocking structure matches an external thickness; and b5) modifying the pollution-blocking structure data to add the external pollution-blocking structure to a position surrounding the outer wall of the color area and separated from the outer wall of the color area with an external spacing.

9 . The method of slicing and printing colour 3D model of claim 8 , wherein the step b4 comprises:
b41) determining a structure length and a structure width by a model length and a model width of the external thickness and the shape data according to the external spacing; b42) determining a structure height according to a model height of the shape data; b43) generating a replica model data of a replica model corresponding to the colour 3D model, and executing a hollowing process by modifying the replica model data, making a thickness a blocking wall part of the replica model match the external thickness; and b44) magnifying the replica model and using the replica model data modified as the pollution-blocking structure data according to the structure length, the structure width and the structure height by modifying the replica model data.

10 . The method of slicing and printing colour 3D model of claim 8 , wherein the step b4 further comprises a step b45) removing the base structure or the roof structure by modifying the replica model data if it is determined that the replica model data corresponding to the replica model, and the replica model has a base structure or a roof structure.

11 . The method of slicing and printing colour 3D model of claim 2 , wherein further comprises a step e) generating another pollution-blocking structure data corresponding to an internal pollution-blocking structure, the internal pollution-blocking structure close to and surrounded by the color area, but not in contact with an inner wall of the color area, if it is determined that the colour 3D model corresponding to the model data is an open shell.

12 . The method of slicing and printing colour 3D model of claim 1 , wherein the step b is generating the pollution-blocking structure data corresponding to an internal pollution-blocking structure and configuring the pollution-blocking structure data to make the pollution-blocking structure corresponding be surrounded by the color area and separated from an inner wall of the color area with a spacing.

13 . The method of slicing and printing colour 3D model of claim 12 , wherein the step b comprises:
b6) generating the pollution-blocking structure data corresponding to the internal pollution-blocking structure; b7) forming a demolition structure or a support inner edge on the internal pollution-blocking structure by modifying the pollution-blocking structure data; and b8) adding the internal pollution-blocking structure to a position surrounded by an inner wall of the color area by modifying the pollution-blocking structure data.

14 . The method of slicing and printing colour 3D model of claim 12 , wherein the step d comprises:
d4) controlling the modeling nozzle ( 100 ) to print a layer of the internal pollution-blocking slice first, then printing the model slice of the same layer; d5) con

Assignees

• Xyzprinting Inc
• Kinpo Elect Inc

Inventors

• Lee Yang-Teh
• Juang Jia-Yi
• Huang Chun-Hsiang
• Ho Ming-En
• Chang Yu-Chuan

Classifications

• B29C64/40

  Structures for supporting 3D objects during manufacture and intended to be sacrificed after completion thereof · CPC title

• B29C64/112

  using individual droplets, e.g. from jetting heads · CPC title

• H04N1/58 Primary

  Edge or detail enhancement; Noise or error suppression, e.g. colour misregistration correction (H04N1/62 takes precedence) · CPC title

• B29C64/386

  Data acquisition or data processing for additive manufacturing · CPC title

• B33Y50/02

  for controlling or regulating additive manufacturing processes · CPC title