US 12,285,918 B2
Printing device and printing method
Yan He, Qingdao (CN); Dianming Chu, Qingdao (CN); and Wenjuan Bai, Qingdao (CN)
Assigned to Qingdao University of Science and Technology, Qingdao (CN)
Filed by Qingdao University of Science and Technology, Qingdao (CN)
Filed on Apr. 13, 2023, as Appl. No. 18/121,031.
Application 18/121,031 is a continuation of application No. PCT/CN2021/092675, filed on May 10, 2021.
Claims priority of application No. 202110410084.6 (CN), filed on Apr. 16, 2021.
Prior Publication US 2023/0241840 A1, Aug. 3, 2023
Int. Cl. B33Y 10/00 (2015.01); B29C 64/10 (2017.01); B29C 64/393 (2017.01); B33Y 50/02 (2015.01); B33Y 70/10 (2020.01)
CPC B29C 64/393 (2017.08) [B29C 64/10 (2017.08); B33Y 10/00 (2014.12); B33Y 50/02 (2014.12); B33Y 70/10 (2020.01)] 1 Claim
OG exemplary drawing
 
1. A printing method comprising:
discharging a material comprising carbon fiber coated with liquid epoxy resin;
controlling at least one electrode pair to be in contact with the material during the step of discharging to form an electrical circuit comprising the electrode pair and the material, wherein the electrode pair comprises an electrode (A) and an electrode (B);
generating, by the electrical circuit, an electrical current between the electrode (A) and the electrode (B) that passes through the carbon fiber to cause resistive heating of the carbon fiber until a surface temperature of the liquid epoxy resin coated on the carbon fiber is greater than or equal to a preset temperature, thereby causing the carbon fiber and the liquid epoxy resin to combine to form a printed object; and
adjusting printing speed by adjusting any one of the voltage, the current and the resistance between the electrode (A) and the electrode (B);
wherein, the adjustment of the resistance between the electrode (A) and the electrode (B) comprises adjusting a distance between the electrode (A) and the electrode (B) and/or adjusting a cross-sectional area of the electrically conductive material in between the electrode (A) and the electrode (B).