阅读说明：本技术 一种工业级大尺寸pc材料fdm打印成型方法 (Industrial large-size PC material FDM printing forming method ) 是由 邱金勇 王誉 于 2020-06-16 设计创作，主要内容包括：本发明公开了一种工业级大尺寸PC材料FDM打印成型方法,包括如下步骤：(1)将PC材料放置于普通鼓风干燥箱进行烘干,烘干温度为85～105℃,烘干时间为5～10小时；(2)将成型室和打印平台进行加热,所述成型室的加热温度为65～85℃,所述打印平台的加热温度为85～100℃；(3)将烘干后的PC材料放入材料箱进一步进行干燥,干燥温度为65～85℃；(4)将打印平台进行微孔处理和涂抹高温黏胶；(5)根据底面的二维图形打印第一层图形,沿图形周轮廓垂直方向打印裙边,所述沿图形周轮廓垂直方向打印的裙边与图形周轮廓部分重叠；(6)控制喷嘴温度,按照正交铺层方式进行打印成型。本发明对温度进行控制,增加微孔处理和涂胶处理,改变打印方式,提高样件质量。(The invention discloses an industrial large-size PC material FDM printing and forming method, which comprises the following steps of: (1) placing the PC material in a common blast drying oven for drying, wherein the drying temperature is 85-105 ℃, and the drying time is 5-10 hours; (2) heating a forming chamber and a printing platform, wherein the heating temperature of the forming chamber is 65-85 ℃, and the heating temperature of the printing platform is 85-100 ℃; (3) putting the dried PC material into a material box for further drying, wherein the drying temperature is 65-85 ℃; (4) carrying out micropore treatment and smearing high-temperature viscose on the printing platform; (5) printing a first layer of graph according to the two-dimensional graph of the bottom surface, and printing a skirt edge along the vertical direction of the peripheral outline of the graph, wherein the skirt edge printed along the vertical direction of the peripheral outline of the graph is partially overlapped with the peripheral outline of the graph; (6) and controlling the temperature of the nozzle, and printing and forming according to an orthogonal layering mode. The invention controls the temperature, increases the micropore processing and the gluing processing, changes the printing mode and improves the quality of the sample.)

1. An industrial large-size PC material FDM printing and forming method is characterized by comprising the following steps:

(1) placing the PC material in a common blast drying oven for drying, wherein the drying temperature is 85-105 ℃, and the drying time is 5-10 hours;

(2) heating a forming chamber and a printing platform of an FDM printing system, wherein the heating temperature of the forming chamber is 65-85 ℃, and the heating temperature of the printing platform is 85-100 ℃;

(3) putting the dried PC material into a material box of an FDM printing system for further drying, wherein the drying temperature is 65-85 ℃, and the drying mode is continuous drying;

(4) carrying out micropore processing and coating high-temperature viscose on a printing platform of the FDM printing system;

(5) printing a first layer of graph according to the two-dimensional graph of the bottom surface, and printing a skirt edge along the vertical direction of the peripheral outline of the graph, wherein the skirt edge printed along the vertical direction of the peripheral outline of the graph is partially overlapped with the peripheral outline of the graph, the overlapping rate is 5-50%, and the width of the skirt edge is 1-3 mm;

(6) controlling the temperature of a nozzle of an FDM printing system, and printing and forming according to an orthogonal layering mode to finally obtain a large-size PC material sample piece, wherein the orthogonal layering is an interlayer orthogonal layering; the single wires are paved in an overlapping mode, and the overlapping rate is 5-30%.

2. The industrial large-size PC material FDM printing and forming method as claimed in claim 1, wherein: and the micropore treatment is to paste a PE adhesive tape with micropores on the printing platform, the pore diameter of each micropore is 0.1-1.0 mm, and the high-temperature adhesive is paste-shaped.

3. The industrial large-size PC material FDM printing and forming method as claimed in claim 1, wherein: the overlapping rate of the skirt edge printed along the vertical direction of the figure peripheral outline and the figure peripheral outline is increased along with the increase of the size of the model.

4. The industrial large-size PC material FDM printing and forming method as claimed in claim 1, wherein: the FDM printing system is a HAGE 175C printing equipment system.

5. A large-size PC material sample obtained by the molding method according to any one of claims 1 to 4.

Technical Field

The invention relates to the technical field of FDM printing and forming of engineering plastics, in particular to an FDM printing and forming method of an industrial large-size PC material.

Background

The additive manufacturing technology is also called as 3D printing technology, and 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 such as extrusion, sintering, melting, solidification, spraying and the like through a programming and numerical control system, so as to manufacture a novel solid manufacturing technology.

FDM is the simplest 3D printing technology in the most popular process, and the working principle of the FDM is to convey hot melt material processed into threads to a hot melt printing spray head through a wire feeding mechanism, the threads or the thread plastic material is heated to a molten state in a nozzle, the spray head moves along the shape contour and track of a part layer under the control of a computer, the molten material is extruded out, is deposited at a desired position, is solidified and molded, is bonded with the previously molded layer material, and is stacked layer by layer to finally form a product model.

PC is a short name for polycarbonate, PC material is one of engineering plastics, and as a material widely used worldwide, PC is an amorphous thermoplastic resin with excellent comprehensive properties, and has excellent electrical insulation, extensibility, dimensional stability and chemical corrosion resistance, higher strength, heat resistance and cold resistance, and the characteristics of large-scale industrial production and easy processing make the price extremely low.

However, most of FDM 3D printing and forming technologies can only manufacture small-sized parts, multiple parts need to be separated, printed and then spliced for forming in industrial production, and the problems of poor surface quality and easy generation of warping and deformation mainly exist in the large-sized FDM printing technologies, mechanical properties are not ideal, industrial-grade printing of PC materials needs to be formed in a specific environment at a specific temperature, and particularly large-sized printing and forming are difficult to complete, which greatly limits the application of PC materials in personalized structures such as industrially complex structures and biomimetic structures.

Disclosure of Invention

The invention provides an industrial large-size PC material FDM printing and forming method, which aims to solve the technical problems in the background art.

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

an industrial large-size PC material FDM printing and forming method comprises the following steps:

(1) placing the PC material in a common blast drying oven for drying, wherein the drying temperature is 85-105 ℃, and the drying time is 5-10 hours;

(2) heating a forming chamber and a printing platform of an FDM printing system, wherein the heating temperature of the forming chamber is 65-85 ℃, and the heating temperature of the printing platform is 85-100 ℃;

(3) putting the dried PC material into a material box of an FDM printing system for further drying, wherein the drying temperature is 65-85 ℃, and the drying mode is continuous drying;

(4) carrying out micropore processing and coating high-temperature viscose on a printing platform of the FDM printing system;

(5) printing a first layer of graph according to the two-dimensional graph of the bottom surface, and printing a skirt edge along the vertical direction of the peripheral outline of the graph, wherein the skirt edge printed along the vertical direction of the peripheral outline of the graph is partially overlapped with the peripheral outline of the graph, the overlapping rate is 5-50%, and the width of the skirt edge is 1-3 mm;

(6) controlling the temperature of a nozzle of an FDM printing system, and printing and forming according to an orthogonal layering mode to finally obtain a large-size PC material sample piece, wherein the orthogonal layering is an interlayer orthogonal layering; the single wires are paved in an overlapping mode, and the overlapping rate is 5-30%.

Preferably, the micropore treatment is to paste a PE adhesive tape with micropores on the printing platform, the pore size of the micropores is 0.1-1.0 mm, and the high-temperature adhesive is a paste-like high-temperature adhesive.

Preferably, the overlapping rate of the skirt printed in the direction perpendicular to the peripheral outline of the pattern and the peripheral outline of the pattern increases with the size of the model.

Preferably, the FDM printing system is a HAGE 175C printing apparatus system, and the main printing parameters are: print nozzle diameter: 0.25-1.0 mm; print nozzle temperature: 275-285 ℃; layer thickness: 0.1-0.3 mm; printing speed: 45-75 mm/min.

By adopting the technical scheme, the drying performance of the material is controlled, micropore treatment and smearing of paste high-temperature viscose are added, the temperature of a printing platform, the forming temperature and the nozzle temperature are controlled for a printing bottom layer process and an orthogonal printing layering process, and a large-size high-strength PC printing sample piece is obtained.

Detailed Description

The following further describes the embodiments of the present invention. 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.