3D printing powder cleaning curb chain and powder cleaning method

A 3D printing and powder cleaning technology, which is applied in the field of 3D printing, can solve the problems of difficult powder cleaning, low powder cleaning efficiency and lack, etc., and achieve the effect of expanding the scope of application of products and improving the efficiency of powder cleaning

Inactive Publication Date: 2021-05-28
OECHSLER PLASTIC PROD TAICANG
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

However, the semi-finished products after SLS parts molding still need the post-processing step of powder cleaning. When encountering semi-closed products with only one or several small openings, the powder remaining in the cavity is extremely difficult to clean, and the powder cleaning efficiency extremely low
However, the research on post-processing methods of laser sintering is still relatively lacking.

Method used

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  • 3D printing powder cleaning curb chain and powder cleaning method
  • 3D printing powder cleaning curb chain and powder cleaning method
  • 3D printing powder cleaning curb chain and powder cleaning method

Examples

Experimental program
Comparison scheme
Effect test

Embodiment 1

[0026] A 3D printing powder cleaning chain and a powder cleaning method.

[0027] (1) in Figure 11 In the target product shown, use 3D software to design a suitable chain structure. In this embodiment, the target product is a shell with two ports, and there are two chains inside the product. Just import the designed structural model into a 3D printer. Print.

[0028] (2) The 3D printer adopts SLS selective laser sintering printer.

[0029] (3) The 3D printing of this box uses SLS selective laser sintering technology, and the printing raw material is nylon powder, and the laser is used to scan and irradiate the powder layer by layer under the control of the computer to achieve sintering and bonding of thermoplastic powder, and layer by layer accumulation to achieve forming.

[0030] (4) The nylon powder used in the 3D printing semi-enclosed box structure is a powder with a particle size of 100 microns, and the sintering temperature of the thermoplastic material is 170°C.

...

Embodiment 2

[0034] A 3D printing powder cleaning chain and a powder cleaning method.

[0035] (1) in Figure 12 For the target product shown, design a suitable chain structure in the 3D software, and import the designed structure into the 3D printer to print.

[0036] (2) The 3D printer adopts SLS selective laser sintering printer.

[0037] (3) The 3D printing of this sphere uses SLS selective laser sintering technology. The printing raw material is PP powder. The laser is used to scan and irradiate the powder layer by layer under the control of the computer to realize the sintering and bonding of thermoplastic powder, and the layer-by-layer accumulation realizes molding. .

[0038] (4) The PP powder used in the 3D printing spherical structure is a powder with a particle size of 100 microns, and the sintering temperature of the thermoplastic material is 120°C.

[0039] (5) Take out the product from the printer and remove the powder on the surface of the product.

[0040] (6) Slowly pu...

Embodiment 3

[0042] A 3D printing powder cleaning chain and a powder cleaning method.

[0043] (1) First in Figure 13 For the target product shown, design a suitable chain structure in the 3D software, and import the designed structure into the 3D printer to print.

[0044] (2) The 3D printer adopts SLS selective laser sintering printer.

[0045] (3) The 3D printing of this bottle body uses SLS selective laser sintering technology. The printing material is TPU powder. The laser is used to scan and irradiate the powder layer by layer under the control of the computer to realize the sintering and bonding of thermoplastic powder, and the layer-by-layer accumulation realizes forming.

[0046] (4) The TPU powder used in the 3D printed bottle structure is a powder with a particle size of 100 microns, and the sintering temperature of the thermoplastic material is 120°C.

[0047] (5) Take out the product from the printer and remove the powder on the surface of the product.

[0048] (6) Slowly...

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Abstract

The invention belongs to the technical field of 3D printing and particularly relates to a 3D printing powder cleaning curb chain and a powder cleaning method. According to the powder cleaning method, at least one curb chain is arranged in a product during SLS (Selective Laser Sintering) printing of the product, and the curb chain is pulled during powder cleaning to loosen powder in the product. By means of the powder cleaning method provided by the invention, a brand new thought is provided for SLS post-treatment, the raw material powder in the product can be quickly and efficiently cleaned, and particularly for a semi-closed product and even a product with a complex structure inside, the slightly caked powder in the product can be quickly loosened to realize efficient and quick powder cleaning; the defects of traditional air-blowing powder cleaning are effectively overcome, and the product application range of the SLS printing technology is further widened; and nowadays, the 3D printing technology does not have the condition of replacing the traditional manufacturing industry, and this kind of post-treatment method is beneficial to promoting large-scale industrial application of the 3D printing technology.

Description

technical field [0001] The invention belongs to the technical field of 3D printing, and in particular relates to a 3D printing powder cleaning chain and a powder cleaning method. Background technique [0002] Selective laser sintering rapid prototyping technology (SLS), with the help of computer-aided design and manufacturing, slices the three-dimensional model according to a certain thickness, and obtains the interface profile of the slice. Then control the laser beam to scan the powder of the solid part of the model, so that the powder particles are melted and bonded to each other, and the outline of the layer is gradually obtained. Using the principle of layered manufacturing superposition, the semi-finished product is finally obtained. However, the semi-finished products after SLS parts molding still need the post-processing step of powder cleaning. When encountering semi-closed products with only one or several small openings, the powder remaining in the cavity is extr...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): B29C64/153B29C64/35B33Y40/20
CPCB29C64/153B29C64/35B33Y40/20
Inventor 刘冬梅王敏旸吴玲杜湘云张华健
Owner OECHSLER PLASTIC PROD TAICANG
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