阅读说明：本技术 将平面uv喷绘机改成直喷式全彩色3d打印机的方法 (Method for changing plane UV inkjet printer into direct-injection full-color 3D printer ) 是由 胡大壮 毛春杰 于 2018-08-27 设计创作，主要内容包括：将普通平面UV喷绘机改成直喷式全彩色3D打印机的方法属于3D打印(增材技术)领域。本发明用提高平面UV喷绘机被喷物托盘前后移动的重复定位精度和增加精密垂直运动系统(Z轴系统)的方法,将普通的平面UV喷绘机改成“平面喷绘”和“直喷式全彩色3D打印”两用机,这大大降低了“直喷式全彩3D打印机”的成本,使全彩色3D打印很容易普及。(A method for changing a common plane UV inkjet printer into a direct-injection full-color 3D printer belongs to the field of 3D printing (material increase technology). The invention changes the common plane UV inkjet printer into a dual-purpose machine of 'plane inkjet printer' and 'direct-injection full-color 3D printing' by improving the repeated positioning precision of the back and forth movement of the object tray to be sprayed of the plane UV inkjet printer and increasing a precise vertical movement system (Z-axis system), thereby greatly reducing the cost of the 'direct-injection full-color 3D printer' and leading the full-color 3D printing to be easily popularized.)

1. A common plane UV inkjet printer is changed into a direct-injection full-color 3D printer, which is characterized in that: adding a precise vertical motion system (Z-axis system) of the sprayed object tray.

2. The method as recited in claim 1, wherein: and when each layer is sprayed, the tray must accurately move downwards by a corresponding distance according to the set layer height.

3. Improve the repeated positioning accuracy of tray seesaw, characterized by: the original belt transmission is changed into ball screw transmission, and the guide rail is changed into a square ball guide rail.

1. Field of the invention

The technology belongs to the field of 3D printing (additive technology).

2. Background of the invention

The direct-injection full-color 3D printer has the advantages of large printed model size, high precision, high color saturation and bright color. At present, only a few manufacturers in the world produce the product, the price is high, and the popularization is difficult. In fact, the basic principle of the direct-injection full-color 3D printer is the principle of a common plane UV inkjet printer. The patterns sprayed and printed by the common plane UV spray printer are full-color, but the common plane UV spray printer only sprays and prints plane patterns, so that the positioning precision of a sprayed and printed object is not necessarily high, the sprayed and printed object does not need to accurately move in the vertical direction (Z axis), the 3D printing is formed by overlapping a plurality of layers of plane patterns, and the sprayed object needs to accurately move vertically. As long as the two problems are solved, the common plane UV inkjet printer becomes a direct-injection full-color 3D printer. This has reduced the cost of the full-color 3D printer of direct-injection formula by a wide margin, makes full-color 3D print very easily popularized. (of course, to realize full-color 3D printing, corresponding software must be matched, i "a universal color slicing method for full-color 3D printing", patent application No. 201810686739.0, available here.)

3. Summary of the invention

As mentioned above, to change a common planar UV inkjet printer into a "direct-injection full-color 3D printer", two problems need to be solved:

firstly, the repeated positioning precision of the front and back movement (called Y direction and the left and right movement of the spray head called X direction) of the tray for placing the object of the spray drawing machine is improved, namely, the tray is reset after moving every time and needs to accurately return to the original position.

And secondly, adding a precise vertical motion system (Z-axis system) of the inkjet printer, and precisely moving the tray downwards by a corresponding distance according to the set layer height after each layer is inkjet-printed.

The invention provides a method for reconstructing a common plane UV inkjet printer according to the two aspects. The improved common plane UV inkjet printer is upgraded into a dual-purpose machine of plane inkjet printing and direct-injection full-color 3D printing. This very big reduction the cost of direct-injection formula full-color 3D printer, make the full-color 3D of low-cost print and realize very easily.

4. Detailed description of the preferred embodiments

Referring to the accompanying drawings, fig. 1 is a structure of a common UV inkjet printer, and fig. 2 is a structure of a direct-injection 3D printer. The 4 in the two figures is a tray, the back and forth movement of the tray is transmitted by a belt 3 in figure 1, the transmission is changed into the transmission of a ball screw 3 in figure 2, and the tray is driven by a servo motor 6, a guide rail is changed into a square ball guide rail in figure 2 from a common circular guide rail in figure 1, and the purpose of the transformation is as follows: the smoothness and repeated positioning precision of the movement of the tray are improved; the vertical motion of tray, ordinary screw rod 1 of figure 1 can only adjust the height of tray mechanism, and figure 2 changes ball screw 1 into, is driven by servo motor 8, increases vertical motion precision control circuit 7, makes the tray once the air brushing one deck, according to the layer height of setting for, and automatic accurate downstream corresponding distance is printed until accomplishing whole 3D.