阅读说明：本技术 一种高密度pc-abs合金材料fdm打印成型方法 (High-density PC-ABS alloy 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：本发明公开了一种高密度PC-ABS合金材料FDM打印成型方法,包括(1)将PC-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PC-ABS线材放入FDM打印系统的材料箱进一步进行干燥,所述材料箱为密封式材料箱,与成型室连同；(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,所述沿图形周轮廓平行方向打印的裙边与图形周轮廓重叠；(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,最终得到高密度的PC-ABS样件。(The invention discloses a high-density PC-ABS alloy material FDM printing and forming method, which comprises the steps of (1) placing a PC-ABS wire in a common air-blowing drying box for drying, (2) heating a forming chamber and a printing platform of an FDM printing system, and (3) placing the dried PC-ABS wire in a material box of the FDM printing system for further drying, wherein the material box is a sealed material box and is connected with the forming chamber; (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, wherein the skirt edge printed along the direction parallel to the peripheral outline of the graph is overlapped with 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 finally obtain a high-density PC-ABS sample.)

1. A high-density PC-ABS alloy material FDM printing forming method is characterized by comprising the following steps:

(1) placing the PC-ABS wire in a common blast drying oven for drying, wherein the drying temperature is 90-110 ℃, and the drying time is 3-5 hours;

(2) heating a forming chamber and a printing platform of an FDM printing system, wherein the temperature of the forming chamber is 100-120 ℃, and the temperature of the printing platform is 100-120 ℃;

(3) placing the dried PC-ABS wire into a material box of an FDM printing system for further drying, wherein the material box is a sealed material box and is connected with a forming chamber, the drying temperature is 100-120 ℃, and the drying mode is continuous drying;

(4) according to the method, a first layer of graph is flatly laid and printed according to a two-dimensional graph of a bottom surface, a skirt edge is printed along the peripheral outline of the graph, the skirt edge printed along the direction parallel to 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 10-15 circles of line width;

(5) controlling the temperature of a nozzle of an FDM printing system, and carrying out layering printing and forming according to an orthogonal layering mode of a flat layering layer and a wave layer to finally obtain a high-density PC-ABS sample piece, wherein the layering of the flat layering layer and the wave layer is a layer of flat layering and a layer of wave layer, and the steps are repeated; 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%.

2. The high-density PC-ABS alloy material FDM printing and forming method as claimed in claim 1, wherein the high-density PC-ABS alloy material FDM printing and forming method comprises the following steps: the overlapping rate of the skirt edge printed along the parallel direction of the figure peripheral outline and the figure peripheral outline is increased along with the increase of the size of the model.

3. The high-density PC-ABS alloy material FDM printing and forming method as claimed in claim 1, wherein the high-density PC-ABS alloy material FDM printing and forming method comprises the following steps: the FDM printing system is a HAGE 175C printing equipment system.

4. A high-density PC-ABS sample obtained by the molding method according to any one of claims 1 to 3.

Technical Field

The invention relates to the technical field of printing and forming of engineering plastics, in particular to a high-density PC-ABS alloy material FDM printing and forming method.

Background

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.

The PC/ABS engineering plastic, namely PC + ABS (engineering plastic alloy), is named as plastic alloy in Chinese name in chemical industry, and is named as PC/ABS because the material has the excellent heat resistance, weather resistance, dimensional stability and impact resistance of PC resin and the excellent processing flowability of ABS resin. Therefore, the thermoplastic elastomer can be applied to thin-wall and complex-shaped products, and can keep the excellent performance and the formability of the plastic and the material consisting of ester.

However, the FDM 3D printing forming technology is mostly used for desktop level application at present, the industrial level application is not perfect, and the technology is limited in industrial application mainly due to poor surface quality, poor precision and non-ideal mechanical properties, and the PC-ABS material is one of materials with wide application of engineering plastics, but the PC-ABS material FDM forming density is low and the mechanical properties are poor at present.

Disclosure of Invention

The invention aims to provide a high-density PC-ABS alloy material FDM printing forming method 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 PC-ABS alloy material FDM printing forming method comprises the following steps:

(1) placing the PC-ABS wire in a common blast drying oven for drying, wherein the drying temperature is 90-110 ℃, and the drying time is 3-5 hours;

(2) heating a forming chamber and a printing platform of an FDM printing system, wherein the temperature of the forming chamber is 100-120 ℃, and the temperature of the printing platform is 100-120 ℃;

(3) placing the dried PC-ABS wire into a material box of an FDM printing system for further drying, wherein the material box is a sealed material box and is connected with a forming chamber, the drying temperature is 100-120 ℃, and the drying mode is continuous drying;

(4) according to the method, a first layer of graph is flatly laid and printed according to a two-dimensional graph of a bottom surface, a skirt edge is printed along the peripheral outline of the graph, the skirt edge printed along the direction parallel to 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 10-15 circles of line width;

(5) controlling the temperature of a nozzle of an FDM printing system, and carrying out layering printing and forming according to an orthogonal layering mode of a flat layering layer and a wave layer to finally obtain a high-density PC-ABS sample piece, wherein the layering of the flat layering layer and the wave layer is a layer of flat layering and a layer of wave layer, and the steps are repeated; 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 overlapping rate of the skirt edge printed in the direction parallel to the pattern peripheral outline and the pattern peripheral outline increases with the increase of 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: 245-265 ℃; layer thickness: 0.1-0.3 mm; printing speed: 30-75 mm/min.

By adopting the technical scheme, the PC-ABS material is dried, the micropore printing platform, the printing bottom layer and the printing layer are utilized, and the temperature of the printing platform, the forming temperature and the nozzle temperature are controlled, so that the prepared PC-ABS printing sample piece has high density and strength, good mechanical property, high product density, good quality and good isotropy.

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.