Three-dimensional object forming method and forming device

A technology of three-dimensional objects and molding methods, which is applied in the field of 3D printing, can solve the problems that the mechanical properties of three-dimensional objects are difficult to meet industrial applications, and achieve good mechanical properties, reduce shrinkage, and improve molding accuracy.

Active Publication Date: 2019-07-30
ZHUHAI SAILNER 3D TECH CO LTD
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

However, in order to ensure the fluency of inkjet printing, the overall photocurable or thermally curable material should have suitable viscosity and surface tension, etc., which brings certain restrictions on the specific selection of material components, making it difficult to meet the mechanical properties of the final three-dimensional object. industrial application

Method used

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  • Three-dimensional object forming method and forming device
  • Three-dimensional object forming method and forming device

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Experimental program
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Effect test

Embodiment 1

[0033] This embodiment provides a three-dimensional object forming method, such as figure 1 shown, including the following steps:

[0034] S1. Forming a powder particle layer, wherein the powder particle layer contains at least thermosetting powder particles capable of thermal polymerization;

[0035] S2. According to the layer printing data, spray a photocurable material on the powder particle layer, so that the photocurable material covers at least part of the powder particle layer and penetrates into the powder particle layer;

[0036] S3, curing the photocurable material to form a slice layer;

[0037] S4. Repeat the steps from forming the powder particle layer to forming the slicing layer (i.e. steps S1 to S3), so that the obtained multiple slicing layers are superimposed layer by layer to form a three-dimensional object green body;

[0038] S5. Heating the green body of the three-dimensional object to thermally polymerize the thermosetting powder particles to obtain a ...

Embodiment 2

[0095] This embodiment provides a method for forming a three-dimensional object, which is a further description on the basis of the first embodiment. For parts not described in detail in this embodiment, refer to the description in the first embodiment.

[0096] Please refer further figure 1 In this embodiment, after the green body of the three-dimensional object is obtained, step S4a is performed, that is, the powder particle layer not covered by the photocurable material is removed.

[0097] As mentioned earlier, the area and shape of the light-curing material covering and penetrating into the powder particle layer are determined by the layer printing data, so the area of ​​the powder particle layer should at least not be smaller than the area of ​​the light-curing material, so it is difficult to avoid powder particles The layer is not covered and penetrated by the photocurable material. If this part of the uncovered and infiltrated powder particle layer is not removed, it ...

Embodiment 3

[0101] Such as figure 2 As shown, the present embodiment provides a three-dimensional object forming device, which includes a powder supply component 11, a forming platform 12, an inkjet print head 13, a radiation source 14 and a heating component 15, wherein:

[0102] The powder supply part 11 is used to form a powder particle layer 16 on the molding platform 12;

[0103] The inkjet printing head 13 is used to spray the photocurable material 17 on the powder particle layer 16 according to the layer printing data;

[0104] The radiation source 14 is used to irradiate the photocurable material 17 to cure the photocurable material 17 to form a slice layer 18;

[0105] The heating unit 15 is used to heat the three-dimensional object green body 19 to thermally polymerize the thermosetting powder particles to obtain a three-dimensional object.

[0106] The process of using the three-dimensional object forming device to print three-dimensional objects can be as follows:

[0107]...

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Abstract

The invention provides a three-dimensional object forming method and a forming device. The three-dimensional object forming method comprises the following steps of forming a powder particle layer, wherein the powder particle layer contains at least thermosetting powder particles capable of undergoing thermal polymerization; spraying a photocuring material on the powder particle layer according tolayer printing data, and enabling the photocuring material to cover at least part of the powder particle layer and penetrate into the powder particle layer; curing the photocuring material to form a slicing layer; repeating the steps from the step of forming the powder particle layer to the step of forming the slicing layer, and overlaying the obtained multiple slicing layers layer by layer to form a three-dimensional object green body; and heating the three-dimensional object green body to thermally polymerize the thermosetting powder particles to obtain the three-dimensional object. According to the forming method, the formed three-dimensional object has very good mechanical properties and high forming precision.

Description

technical field [0001] The invention relates to the technical field of 3D printing, in particular to a three-dimensional object forming method and forming device. Background technique [0002] 3D printing technology is also known as rapid prototyping technology, rapid prototyping technology, additive manufacturing technology, etc. Its basic principle is to slice the 3D model based on slicing software, and the data processor converts the sliced ​​data of the 3D model into layered printing data, and controls The controller controls the printing device to print layer by layer according to the layer printing data, and superimposes to form a 3D object. At present, 3D printing technology mainly includes selective laser sintering technology (abbreviation: SLS technology), three-dimensional inkjet printing technology (abbreviation: MJP technology) and so on. [0003] SLS technology is also known as powder three-dimensional molding technology. Its main process is to lay powder parti...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): B29C64/153B29C64/106B29C64/393B29C64/20B33Y10/00B33Y30/00B33Y50/02B33Y70/00
CPCB29C64/153B29C64/106B29C64/393B29C64/20B33Y10/00B33Y30/00B33Y50/02B33Y70/00B29C64/165B29C64/295B33Y40/20B29C71/02B29C2035/0827B29C2035/0822B29C64/307B29C64/245B29C64/209B29K2063/00B29K2067/06
Inventor 杨前程蒋韦
Owner ZHUHAI SAILNER 3D TECH CO LTD
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