METHOD FOR VECTOR-MATRIX PHOTOPOLYMER 3D PRINTING (OPTIONS) Russian patent published in 2023 - IPC B29C64/10 B29C64/124 B33Y10/00 

FIELD: 3D printing.

SUBSTANCE: manufacturing products using 3D printing, in particular options of vector-matrix photopolymer 3D printing methods. One option is a method that includes the following steps: a) filling the container with photopolymer, b) placing a construction platform in the container and positioning the platform at the height of building the photopolymer layer, c) placing a block of LCD matrices at a distance from the container at the level of the base gap, d) polymerizing this layer of photopolymer, e) moving the construction platform vertically along the Z axis, f) removing the finished product or placing the construction platform in the container at the height of the next layer of photopolymer, g) repeating the stages of building layers until the product is completely manufactured, h) moving the construction platform away and removing the finished product. Moreover, i) the construction platform is marked into at least four illumination positions, placed sequentially along the X axis, and the number of positions is a multiple of two, and the area of the mentioned positions corresponds to the area of the LCD matrix block, j) a block of LCD matrices is placed, consisting of at least two matrices at a distance from the container to the level of position I of the construction platform, k) polymerizing part of this photopolymer layer, the projection of which corresponds to position I of the construction platform, l) then moving the block of LCD matrices in the horizontal plane along the X axis to the level of the next position construction platform, and to illuminate each even position, the distance by which the block of LCD matrices is moved is equal to the width of one LCD matrix, and for illumination of odd positions, the distance by which the block of LCD matrices is moved is determined by the formula: R=S(2n-1), where S is the width of one LCD matrix, and n is the number of matrices in a block of LCD matrices, m) repeating the stages of polymerization of parts of the photopolymer layer until the block of LCD matrices passes the trajectory in accordance with all positions of the construction platform.

EFFECT: increasing the possible sizes of products printed using 3D printers, while simultaneously improving the quality of their printing.

10 cl, 8 dwg, 5 ex