3D printing device and method for high-viscosity resin multiple concentric structure

A 3D printing, high-viscosity technology, applied in coating devices, 3D object support structures, manufacturing tools, etc., can solve problems such as easy clogging and single material, and achieve the effect of expanding the range of materials, high control precision, and compact structure

Pending Publication Date: 2021-09-07
XI AN JIAOTONG UNIV
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  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

[0009] Aiming at the problems of single material and easy clogging when printing under high viscosity in the existing direct-write 3D

Method used

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  • 3D printing device and method for high-viscosity resin multiple concentric structure
  • 3D printing device and method for high-viscosity resin multiple concentric structure
  • 3D printing device and method for high-viscosity resin multiple concentric structure

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Example Embodiment

[0033] The present invention will be further described in detail below in conjunction with the accompanying drawings.

[0034] The high-viscosity resin in the present invention refers to have shear-thinning property, at shear rate 0.1s -1 Under certain conditions, the apparent viscosity range is between 4000-10000Pa·s, and resin materials that are difficult to print by direct writing extrusion, Figure 5 It is the curve of the viscosity of typical printing materials changing with the shear rate.

[0035] refer to figure 1 , figure 2 and image 3 , a 3D printing device for multiple concentric structures of high-viscosity resins, including a printing platform movable along XYZ three axes, on which a support plate 5 is arranged, and the support plate 5 includes a vertically arranged horizontal plate and a vertical plate, the vertical plate is arranged on the horizontal plate, and the shell cylinder 12 is arranged on the horizontal plate, and the shell cylinder 12 is used as ...

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Abstract

The invention provides a 3D printing device and method for a high-viscosity resin multiple concentric structure. The 3D printing device comprises a motor, wherein a transmission gear is arranged on the motor; an outer extrusion screw is arranged in an outer barrel shell; a gear engaged with the transmission gear is arranged at the top end of the outer extrusion screw; a first closed space is formed by a cavity between the outer barrel shell and the outer extrusion screw; an outer printing spray head is arranged at the bottom of the first closed space; a second closed space is formed by a cavity between an inner extrusion screw and the outer extrusion screw; a middle printing spray head is arranged at the bottom of the second closed space; a third closed space is formed in the inner extrusion screw; an inner printing spray head is arranged at the bottom of the third closed space; and the three spray heads are concentrically arranged. According to the 3D printing device and method, the outer extrusion screw and the inner extrusion screw are arranged, through the rotation shearing action of the inner screw and the outer screw and inner layer material wrapping, direct-writing extrusion printing of a single structure, a dual concentric structure and a triple concentric structure of a high-viscosity resin material can be achieved, and the range of materials capable of being printed through direct-writing printing is widened.

Description

technical field [0001] The invention relates to the technical field of 3D printing and molding, in particular to a 3D printing device and method of multiple concentric structures of high-viscosity resin. Background technique [0002] 3D printing technology is a rapid prototyping technology. It is a technology based on digital model files, using bondable materials such as powdered metal and plastic, to construct objects by layer-by-layer printing. The common ones are fused deposition modeling (FDM), photocuring rapid prototyping (SLA), selective laser sintering (SLS) and so on. [0003] Direct writing printing technology is an emerging 3D technology, which mainly manufactures complex three-dimensional structures by directly extruding filaments, and is often used for printing of various polymer materials. It has several advantages as follows: [0004] (1) The printing material can be printed only if it meets the rheological properties of shear thinning, so it can be applied ...

Claims

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Application Information

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IPC IPC(8): B29C64/112B29C64/20B29C64/209B33Y10/00B33Y30/00
CPCB29C64/112B29C64/20B29C64/209B33Y10/00B33Y30/00
Inventor 段玉岗邓昕王成萌张陈平张通
Owner XI AN JIAOTONG UNIV
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