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3D printing technology based sample deformation control method

A technology of 3D printing and sample control, applied in the field of 3D printing, can solve the problem of uncontrollable dynamic changes of deformation, and achieve the effect of various recovery effects, good controllability, and realization of deformation.

Active Publication Date: 2020-04-28
HUAZHONG UNIV OF SCI & TECH +1
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

[0006] Aiming at the defects of the prior art, the purpose of the present invention is to propose a method for controlling the deformation of samples based on 3D printing technology, aiming at solving the problem of placing the 3D printing samples in a hot environment in the prior art and directly adopting oil bath, water bath, etc. Or the problem that the dynamic change process of deformation caused by the heating of the heating box is uncontrollable

Method used

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  • 3D printing technology based sample deformation control method
  • 3D printing technology based sample deformation control method
  • 3D printing technology based sample deformation control method

Examples

Experimental program
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Effect test

Embodiment 1

[0048] In this embodiment, the sample required by the user is as figure 2 The rectangular sheet shown in (a) of the figure, at the same time, the user requires the rectangular sheet to be able to achieve different degrees of bending and bending deformation at different positions. Specifically, the above-mentioned rectangular sheet includes conductive continuous fibers and thermotropic shape memory polymers, wherein the surface of the conductive continuous fibers is coated with thermotropic shape memory polymers.

[0049] In order to get as figure 2 For the rectangular sheet shown in (a), first determine the printing path of the thermotropic shape memory polymer according to the shape characteristics of the required sample; then determine the position of the conductive continuous fiber according to the variability requirements of the required rectangular sheet , shape and density distribution, and further determine the printing path of the conductive continuous fiber; specif...

Embodiment 2

[0067] In this embodiment, the sample required by the user is a cross-shaped slice, such as Figure 4 As shown in (a) in the figure, it contains four branches, which are respectively branch 1, branch 2, branch 3, and branch 4. The user requires that after the four branches are bent, the four branches The original shape can be restored in a certain order.

[0068] Specifically, the above-mentioned cross-shaped sheet 3D printing sample includes conductive continuous fibers and thermotropic shape memory polymers, wherein the surface of the conductive continuous fibers is coated with thermotropic shape memory polymers. Specifically, the following methods are used: first, according to the shape characteristics of the required sample, determine the printing path of the thermotropic shape memory polymer; then, according to the variability requirements of the required sample, determine the position and shape of the conductive continuous fiber, and further determine the conductive cont...

Embodiment 3

[0077] By changing the location distribution of the conductive fibers in the 3D printed sample, the shape memory deformation of the sample can be controlled.

[0078] Firstly, the conductive continuous fibers in the rectangular sheets with different positions of the conductive continuous fibers are heated respectively to cause temporary deformation to obtain horizontally expanded rectangular sheets.

[0079] In this example, for shapes such as figure 2 The rectangular sheet shown in (e) is also temporarily deformed by using the method for controlling sample deformation provided by the first aspect of the present invention. Specifically, electrifying the conductive continuous fibers in the rectangular sheet in which the conductive continuous fibers exhibit different distributions generates heat higher than the glass transition temperature of the thermotropic shape memory polymer in the rectangular sheet, and heats the rectangular sheet; wherein, each Rectangular flakes have t...

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Abstract

The invention discloses a 3D printing technology based sample deformation control method. The 3D printing technology based sample deformation control method is characterized in that a heating source is generated based on electro-thermal effect of conductive continuous fibers for providing controllable temperature conditions for deformation to a 3D printing sample; corresponding force is applied ona corresponding position, so that the sample deforms; and the 3D printing sample is integrally or locally heated, so that deformation of different shapes is obtained; and in the whole process, a heating temperature, a force applying position and a force size are controllable, deformation types are various, ohmic heating can be performed on any spatial position, manual shape deformation control isconvenient, and controllability is better. The 3D printing technology based sample deformation control method disclosed by the invention electrifies the conductive continuous fibers in the 3D printing sample which is temporarily deformed, and enables the 3D printing sample which is temporarily deformed to generate shape restoration by controlling size and electrifying time of current, so that therestoration degree is controllable, the restoration effects are various, and controllability on a dynamic change process of deformation is better.

Description

technical field [0001] The invention belongs to the field of 3D printing, and more specifically relates to a method for controlling sample deformation based on 3D printing technology. Background technique [0002] 3D printing technology is a fast, convenient, and low-cost manufacturing method. At the same time, it can process complex samples that are difficult to process with traditional processing methods without being limited by the manufacturing process. It has high application value. [0003] Fused deposition technology is the most widely used method in 3D printing technology. This technology extrudes molten polymer through the printing head, lays it layer by layer, and finally forms a three-dimensional object. By adjusting the printing parameters in the printing process, the shape of the 3D printing sample is controllable during the printing process, so that the user can change the printing parameters according to the shape, performance and function of the required samp...

Claims

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Application Information

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IPC IPC(8): B29C64/379B33Y40/20
CPCB29C64/379B33Y40/20
Inventor 臧剑锋周玉婷张志辉化征周天若羊佑舟周成
Owner HUAZHONG UNIV OF SCI & TECH
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