US 12,420,485 B2
Multi-mode 3D print head and collaborative printing methods applying the same
Shengbo Sang, Taiyuan (CN); Rihui Kang, Taiyuan (CN); Aoqun Jian, Taiyuan (CN); and Runfang Hao, Taiyuan (CN)
Assigned to TAIYUAN UNIVERSITY OF TECHNOLOGY, Taiyuan (CN)
Filed by TAIYUAN UNIVERSITY OF TECHNOLOGY, Shanxi (CN)
Filed on Oct. 18, 2024, as Appl. No. 18/919,492.
Claims priority of application No. 202311363276.1 (CN), filed on Oct. 20, 2023.
Prior Publication US 2025/0128471 A1, Apr. 24, 2025
Int. Cl. B29C 64/209 (2017.01); B29C 64/295 (2017.01); B29C 64/393 (2017.01); B29C 64/118 (2017.01); B33Y 10/00 (2015.01); B33Y 30/00 (2015.01); B33Y 50/02 (2015.01)
CPC B29C 64/209 (2017.08) [B29C 64/295 (2017.08); B29C 64/393 (2017.08); B29C 64/118 (2017.08); B33Y 10/00 (2014.12); B33Y 30/00 (2014.12); B33Y 50/02 (2014.12)] 7 Claims
OG exemplary drawing
 
1. A multi-mode 3D print head, comprising: a print head body, wherein the print head body is provided with an extrusion hole arranged vertically, a feeding mechanism is provided above the extrusion hole, and a heating mechanism is provided below the extrusion hole;
the print head body is arranged with a plurality of droplet ejection holes circumferentially along a center axis of the extrusion hole;
a lower end of each of the plurality of droplet ejection holes is provided inclined toward one end of the extrusion hole, and the lower end of each of the plurality of droplet ejection holes is flush with a lower end of the extrusion hole;
the plurality of droplet ejection holes are set to an even number and symmetrically arranged in pairs around the extrusion hole;
straight lines of central axes of the plurality of droplet ejection holes intersect at an intersection point, and the intersection point is located directly below the extrusion hole;
the print head body is further provided with a plurality of droplet addition holes and auxiliary side holes connected to the plurality of droplet ejection holes;
an inner diameter of the plurality of droplet addition holes is greater than an inner diameter of the plurality of droplet ejection holes, and a droplet addition tube connected to an end away from the plurality of droplet ejection holes;
the auxiliary side holes are provided perpendicular to the droplet addition holes and are detachably connected with an injection auxiliary component;
the injection auxiliary component includes a sleeve secured to the auxiliary side hole, the sleeve is provided with a moving block, the outer surface of the moving block is circumferentially abutted against the inner wall of the sleeve and the end near the auxiliary side hole truncating the droplet addition hole;
the moving block is further provided with an auxiliary ejection hole, the auxiliary ejection hole is connected to the droplet ejection hole when the moving block truncates the droplet addition hole, two openings of the auxiliary ejection hole are disposed toward the plurality of droplet ejection holes and behind the auxiliary side hole, respectively; and
the sleeve is connected to an air pipe at an end away from the auxiliary side hole and is provided with an induction coil.