US 11,969,944 B2
3D printer based on liquid-solid chemical reaction deposition and operating methods thereof
Yongqiang Yang, Guangzhou (CN); and Yuchao Bai, Guangzhou (CN)
Assigned to SOUTH CHINA UNIVERSITY OF TECHNOLOGY, Guangzhou (CN)
Appl. No. 16/962,543
Filed by SOUTH CHINA UNIVERSITY OF TECHNOLOGY, Guangzhou (CN)
PCT Filed Oct. 25, 2018, PCT No. PCT/CN2018/111936
§ 371(c)(1), (2) Date Jul. 16, 2020,
PCT Pub. No. WO2019/140969, PCT Pub. Date Jul. 25, 2019.
Claims priority of application No. 201810042919.5 (CN), filed on Jan. 17, 2018.
Prior Publication US 2020/0353683 A1, Nov. 12, 2020
Int. Cl. B29C 64/321 (2017.01); B22F 1/10 (2022.01); B22F 10/14 (2021.01); B22F 12/53 (2021.01); B29C 64/165 (2017.01); B33Y 10/00 (2015.01); B33Y 30/00 (2015.01); B33Y 40/00 (2020.01); B29C 64/393 (2017.01); B33Y 50/02 (2015.01)
CPC B29C 64/321 (2017.08) [B22F 1/10 (2022.01); B22F 10/14 (2021.01); B22F 12/53 (2021.01); B29C 64/165 (2017.08); B33Y 10/00 (2014.12); B33Y 30/00 (2014.12); B33Y 40/00 (2014.12); B29C 64/393 (2017.08); B33Y 50/02 (2014.12)] 5 Claims
OG exemplary drawing
 
1. A 3D printer based on liquid-solid chemical reaction deposition, comprising a sealed forming chamber (8), a powder container (14), a forming container (16), a powder spreading mechanism, and a three-axis linkage mechanism in the sealed forming chamber (8); the three-axis linkage mechanism moves a nozzle along a X-axis, Y-axis, or Z-axis direction in the sealed forming chamber (8) according to a movement path planning of a control system of the 3D printer; characterised in that, a liquid supply device (1) is provided outside the sealed forming chamber (8), the liquid supply device (1) contains a gel reactant (3); the nozzle is a liquid nozzle (13); the liquid nozzle (13) communicates with the liquid supply device (1) through a following conduit (4); during an operation, the liquid supply device (1) delivers the gel reactant (3) therein to the liquid nozzle (13) through the following conduit (4);
wherein the powder container (14) contains a base powder substance which chemically reacts with the gel reactant (3) to deposit to complete a processing of a formed layer;
wherein the gel reactant (3) is a liquid gel reactant, and the liquid gel reactant is calcium chloride gel or barium chloride gel;
wherein the base powder substance is powder, and the powder is sodium carbonate powder or sodium sulphate powder; and
wherein the base powder substance is adapted for chemical precipitation reaction with the gel reactant (3) to produce a solid precipitate.