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3D printing method and 3D printer of crystalline polymer

A technology of crystalline polymers and 3D printers, applied in 3D object support structures, manufacturing tools, additive manufacturing, etc., can solve problems such as system reliability and life reduction, achieve less warping or cracking, enhanced toughness, and avoid workpieces from being easily damaged. deformation effect

Active Publication Date: 2020-04-24
东莞远铸智能科技有限公司
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

[0005] The technical problem to be solved by the present invention is to provide a 3D printing method and 3D printing equipment for crystalline polymers in view of the technical defects in the prior art that high molding chamber temperature leads to reduced system reliability and lifespan

Method used

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  • 3D printing method and 3D printer of crystalline polymer
  • 3D printing method and 3D printer of crystalline polymer

Examples

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no. 1 example

[0049] The first embodiment of the present invention also provides a 3D printer implementing the 3D printing method of the crystalline polymer of the above embodiment, such as figure 1 and figure 2 As shown, it includes a moving platform (not shown), a printing head 1, a printing platform 2, a cooling device 3, a printing head heating device 4 and a printing pattern layer heating device 5, and the printing head heating device 4 is arranged on the The upper end of the printing head 1, and the printing head heating device 4 is connected between the printing head 1 and the moving platform, and the moving platform is used to drive the printing head 1 on the printing platform 2 according to the predetermined The set printing trajectory moves, the cooling device 3 is arranged above the printing platform 2 and is used to cool the printing pattern layer formed on the printing platform 2, and the printing pattern layer heating device 5 is arranged on the printing platform 2 above the...

no. 2 example

[0057] The second embodiment of the present invention provides a 3D printing method for crystalline polymers, in which a 3D model of a printed workpiece is obtained through self-built models or 3D scanning. Import the 3D model of the printed workpiece into slicing software to perform slicing operations, and transmit the generated code to the above-mentioned 3D printer. The printhead is heated by a printhead heater to melt the crystalline polymer (polyetheretherketone) within the printhead. The moving platform drives the print head to print a single layer on the printing platform to obtain a molten printing pattern layer, activate the cooling system, and spray cooling air to the molten printing pattern layer formed on the printing platform, so that the molten crystalline polymer is too late Crystallization or not enough time to fully crystallize to form a solid print pattern layer containing amorphous regions. The steps of printing and cooling are repeated on top of the cooled...

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Abstract

The invention provides a 3D printing method for a crystalline polymer. The method comprises the following steps: heating a print head, melting a first crystalline polymer in the print head, and driving the print head to perform single-layer printing to obtain a molten printing pattern layer; cooling the molten printing pattern layer, forming a solid-state printing pattern layer containing an amorphous region, repeating the operation on the top of the cooled printing pattern layer until a printing workpiece composed of multiple printing pattern layers stacked up and down, and forming a printingpattern layer unit through at least one printing pattern layer; performing heat treatment on each printing pattern layer unit in the printing process. According to the 3D printing method for the crystalline polymer disclosed by the invention, the printing workpiece with excellent toughness and excellent dimensional stability is obtained by a method for performing heat treatment while printing. The invention further provides a 3D printer.

Description

technical field [0001] The invention belongs to the technical field of rapid prototyping, and in particular relates to a 3D printing method of crystalline polymers and a 3D printer. Background technique [0002] With the rapid development of 3D printing technology, 3D printing technology has been widely used in many fields. Its 3D printing is a rapid prototyping technology. Its working process is: first establish a model through computer software, and then "partition" the built 3D model into layer-by-layer sections, so as to guide the printer to print layer by layer, and stack the thin layers. , until a solid object is formed. [0003] Printable polymers are divided into crystalline polymers and amorphous polymers. Amorphous polymers are in an amorphous state. Since crystalline polymers cannot be completely crystallized, there are two states: crystalline and amorphous. According to the forming principle of FDM (Fused Deposition Modeling), in order to achieve effective bond...

Claims

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Application Information

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Patent Type & Authority Patents(China)
IPC IPC(8): B29C64/118B29C64/20B29C64/295B29C35/16B33Y30/00B33Y10/00
CPCB29C35/16B29C2035/1658B33Y10/00B33Y30/00
Inventor 董现明韩成超秦少伍
Owner 东莞远铸智能科技有限公司