Photocuring 3D printing system and method
A 3D printing and photocuring technology, applied in the field of 3D printing, can solve the problems affecting the printing speed and the accuracy of the three-dimensional model of the material layer thickness, etc., to improve the printing accuracy, improve the printing accuracy and printing speed, and increase the density and strength Effect
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Embodiment 1
[0054] like figure 1 A light-curing 3D printing system shown includes a material carrier 3 and a material spreader 11 . Wherein, the spreader 11 is a drum-type structure, and at least part of the material spreader side of the spreader 11 is a light-transmitting area 12, and the spreader side here refers to the side opposite to the material carrier 3 of the spreader 11, that is figure 1 The bottom of the material spreader 11 shown, of course, along with the rotation of the material spreader 11, the specific position on the material spreader 11 corresponding to the material spreader side is dynamically changed. Translucent zone 12 is arranged on the drum, such as drum is transparent, translucent zone 12 can adopt translucent material to realize, or spreader 11 adopts translucent material to make, and translucent zone 12 can pass light beam (or electromagnetic wave ), the light beam 29 can pass through the light-transmitting region 12 to irradiate the photosensitive printing ma...
Embodiment 2
[0057] like figure 2 The difference between the illustrated embodiment and Embodiment 1 is that an auxiliary scraper 13 can also be provided outside the spreader 11, and the photosensitive printing material 4 is first formed on the surface of the drum (ie, the spreader 11) to form a pre-printed material. The layer 42 is then laid on the material carrier 3 via the drum, and at the same time, the cured layer 41 is formed by the irradiation of the light beam 29-1. Since the photosensitive printing material 4 has pre-formed the pre-printed material layer 42 when laying the drum, the laying accuracy and speed of the drum 11 can be further improved by laying the material in this way. In addition, the beam 29-2 can also be used to selectively irradiate the pre-printed material layer 42 in advance according to the three-dimensional model information, so that it can be slightly cured, and then irradiated by the beam 29-1 to form a cured cured layer when it is squeezed by the drum. 41...
Embodiment 3
[0059] see image 3 and Figure 4 ,and image 3 The difference is that auxiliary scrapers 13 are provided on the left and right sides of the drum spreader 11, and which auxiliary spreader 13 works is determined according to the relative movement direction between the material carrier 3 and the spreader 11, so as to realize Spreading and curing are possible while moving in both directions. E.g, image 3 Among them, the material carrier 3 moves along the first arrow 101, or the drum moves in the direction opposite to the first arrow 101, the spreader 11 rotates along the third arrow 103, the auxiliary scraper 13-1 works, and the spreader The right side of 11 forms a pre-printed material layer, and the pre-printed material layer is laid on the material carrier 3 through the spreader 11, and the cured layer 41 is formed by irradiating the beam 29-1. The pre-printed material layer is pre-cured. When one layer is printed, the material carrier 3 moves down the layer thickness di...
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