阅读说明：本技术 一种高密度abs材料fdm成型工艺 (High-density ABS material FDM forming process ) 是由 邱金勇 王誉 于 2020-06-16 设计创作，主要内容包括：本发明公开了一种高密度ABS材料FDM成型工艺,包括(1)将ABS线材放置于普通鼓风干燥箱进行烘干；(2)将FDM打印系统的成型室和打印平台进行加热；(3)将烘干后的ABS线材放入FDM打印系统的材料箱进一步进行干燥；(4)根据底面的二维图形平铺打印第一层图形,沿图形周轮廓打印裙边；(5)控制FDM打印系统的喷嘴温度,按照平铺层+波浪层的正交铺层方式进行铺层打印成型,得到最终的ABS样件。本发明制成的样件的力学性能佳,产品密度高,质量好。(The invention discloses a high-density ABS material FDM forming process, which comprises the steps of (1) drying an ABS wire in a common blast drying oven; (2) heating a forming chamber and a printing platform of the FDM printing system; (3) putting the dried ABS wire into a material box of an FDM printing system for further drying; (4) according to the two-dimensional graph of the bottom surface, tiling and printing a first layer of graph, and printing a skirt edge along the peripheral outline of the graph; (5) and controlling the temperature of a nozzle of the FDM printing system, and performing layering printing molding according to an orthogonal layering mode of a flat layering layer and a wave layer to obtain a final ABS sample. The sample piece prepared by the invention has good mechanical property, high product density and good quality.)

1. A high-density ABS material FDM forming process is characterized by comprising the following steps:

(1) placing the ABS wire in a common blast drying oven for drying;

(2) heating a forming chamber and a printing platform of the FDM printing system;

(3) putting the dried ABS wire into a material box of an FDM printing system for further drying;

(4) according to the two-dimensional graph of the bottom surface, tiling and printing a first layer of graph, and printing a skirt edge along the peripheral outline of the graph;

(5) and controlling the temperature of a nozzle of the FDM printing system, and performing layering printing molding according to an orthogonal layering mode of a flat layering layer and a wave layer to obtain a final ABS sample.

2. The high-density ABS material FDM molding process of claim 1, wherein the high-density ABS material FDM molding process comprises the following steps: the drying temperature of the air blowing drying box is 60-90 ℃, and the drying time is 4-8 hours.

3. The high-density ABS material FDM molding process of claim 1, wherein the high-density ABS material FDM molding process comprises the following steps: the heating temperature of the forming chamber is 75-100 ℃, and the heating temperature of the printing platform is 65-85 ℃.

4. The high-density ABS material FDM molding process of claim 1, wherein the high-density ABS material FDM molding process comprises the following steps: the material box is a sealed material box and is communicated with the forming chamber, the drying temperature of the material box is 75-100 ℃, and the drying mode is continuous drying.

5. The high-density ABS material FDM molding process of claim 1, wherein the high-density ABS material FDM molding process comprises the following steps: the skirt edge printed in the parallel direction of the peripheral outline of the graph is overlapped with the peripheral outline of the graph, the overlapping rate is 5-50%, and the width of the skirt edge is 3-10 circles of line width.

6. The high-density ABS material FDM molding process of claim 4, wherein the high-density ABS material FDM molding process comprises the following steps: the overlapping rate of the skirt and the figure peripheral outline is increased along with the increase of the size of the model.

7. The high-density ABS material FDM molding process of claim 1, wherein the high-density ABS material FDM molding process comprises the following steps: the flat layer and the wave layer are laid in a one-layer mode and a one-layer wave layer is repeatedly overlapped.

8. The high-density ABS material FDM molding process of claim 7, wherein the high-density ABS material FDM molding process comprises the following steps: the wire laying directions between the flat laying layer and the wave layer are in an orthogonal relation; the single wires are paved in an overlapping mode, and the overlapping rate is 5-30%.

9. The high-density ABS material FDM molding process of claim 1, wherein the high-density ABS material FDM molding process comprises the following steps: the FDM printing system is a HAGE 175C printing equipment system.

10. A high-density ABS sample obtained by the molding process according to any one of claims 1 to 9.

Technical Field

The invention relates to the technical field of FDM printing, in particular to a high-density ABS material FDM forming process.

Background

The additive manufacturing technology is mainly based on computer aided design, material processing and forming technology and digital model, and is formed by stacking special printing materials, such as metal materials, ceramic materials, inorganic materials and the like layer by layer in various modes of extrusion, sintering, melting, solidification, injection and the like through a programming and numerical control system, so that a novel solid manufacturing technology is manufactured.

Fused Deposition Modeling (FDM) is the simplest 3D printing technology in the most popular process, and its working principle is to transfer hot melt material (ABS, PLA, wax, etc.) processed into filament shape to a hot melt printing nozzle through a wire feeding mechanism, the filament or linear plastic material is heated to a molten state in the nozzle, the nozzle moves along the shape contour and track of the part layer under the control of a computer, the molten material is extruded out, deposited at the desired position, solidified and molded, and bonded with the previously molded layer material, and finally stacked layer by layer to form the product model. However, the FDM 3D printing and forming technology is mostly used for desktop level applications, and industrial level applications are not perfect, and the technology is limited in industrial application due to poor surface quality, poor precision, and non-ideal mechanical properties.

ABS refers to acrylonitrile-butadiene-styrene copolymer, has good binding property with other materials, and is easy for surface printing, coating and plating treatment; the thermal deformation temperature is 93-118 ℃, and the temperature of the product can be increased by about 10 ℃ after annealing treatment. The ABS material is one of the most widely used materials for engineering plastics, the application of 3D printing of the ABS material is very common at present, and the application in industrial manufacturing is increasing, but in the current 3D printing technology, the FDM 3D printing forming density of the ABS material is lower compared with that of a part manufactured by a traditional process, and a formed workpiece is poor in mechanical property and easy to damage, so that the application of the ABS material in FDM forming to realize high-density printing is a demonstration of more FDM high-density forming of the engineering plastics in industrial application, and particularly more high-performance engineering plastics.

Disclosure of Invention

The invention aims to provide a high-density ABS material FDM forming process to solve the technical problems in the background technology.

In order to solve the technical problems, the technical scheme of the invention is as follows:

a high-density ABS material FDM forming process comprises the following steps:

(1) placing the ABS wire in a common blast drying oven for drying;

(2) heating a forming chamber and a printing platform of the FDM printing system;

(3) putting the dried ABS wire into a material box of an FDM printing system for further drying;

(4) according to the two-dimensional graph of the bottom surface, tiling and printing a first layer of graph, and printing a skirt edge along the peripheral outline of the graph;

(5) and controlling the temperature of a nozzle of the FDM printing system, and performing layering printing molding according to an orthogonal layering mode of a flat layering layer and a wave layer to obtain a final ABS sample.

Preferably, the drying temperature of the air-blast drying oven is 60-90 ℃, and the drying time is 4-8 hours.

Preferably, the heating temperature of the forming chamber is 75-100 ℃, and the heating temperature of the printing platform is 65-85 ℃.

Preferably, the material box is a sealed material box and is communicated with the forming chamber, the drying temperature of the material box is 75-100 ℃, and the drying mode is continuous drying.

Preferably, the skirt edge printed in the parallel direction of the peripheral outline of the graph is overlapped with the peripheral outline of the graph, the overlapping rate is 5-50%, and the width of the skirt edge is 3-10 circles of line width.

Preferably, the overlapping rate of the skirt and the figure peripheral outline is increased along with the increase of the size of the model.

Preferably, in the fifth step, the flat layer and the wave layer are paved as one layer and repeatedly superposed as one layer; the inter-layer paving line directions are in an orthogonal relation; the single wires are paved in an overlapping mode, and the overlapping rate is 5-30%.

Preferably, the FDM printing system is a HAGE 175C printing apparatus system, and the main parameters are: print nozzle diameter: 0.25-1.0 mm; print nozzle temperature: 235-255 ℃; layer thickness: 0.1-0.3 mm; printing speed: 45-90 mm/min.

By adopting the technical scheme, the drying performance of the material is controlled, the temperature of the printing platform, the forming temperature and the nozzle temperature are controlled by utilizing the micropore printing platform, the printing bottom layer and the printing paving layer, and the high-density high-strength ABS printing sample piece is manufactured, and has the advantages of good mechanical property, high product density and good quality.

Drawings

FIG. 1 is a schematic view of printing skirts along the parallel direction of the peripheral outline of the pattern in step four;

FIG. 2 is a schematic diagram of the layering of the tiled layer + the wave layer in step five;

FIG. 3 is a schematic view of the cross-ply in step five;

fig. 4 is a diagram showing a single line and a single line laying manner.

Detailed Description

The following description of the embodiments of the present invention will be made with reference to the accompanying drawings 1 to 4. It should be noted that the description of the embodiments is provided to help understanding of the present invention, but the present invention is not limited thereto. In addition, the technical features involved in the embodiments of the present invention described below may be combined with each other as long as they do not conflict with each other.