US 12,465,941 B2
Rigid-flexible coupled multi-hole spray gun device with variable size for spraying robot
Bin Zi, Anhui (CN); Jingyuan Wang, Anhui (CN); Feng Xu, Anhui (CN); Yuan Li, Anhui (CN); Bin Zhou, Anhui (CN); Sen Qian, Anhui (CN); and Jiahao Zhao, Anhui (CN)
Assigned to HEFEI UNIVERSITY OF TECHNOLOGY, Anhui (CN)
Appl. No. 18/700,714
Filed by HEFEI UNIVERSITY OF TECHNOLOGY, Anhui (CN)
PCT Filed Apr. 28, 2023, PCT No. PCT/CN2023/091490
§ 371(c)(1), (2) Date Apr. 12, 2024,
PCT Pub. No. WO2024/174378, PCT Pub. Date Aug. 29, 2024.
Claims priority of application No. 202310161361.3 (CN), filed on Feb. 24, 2023.
Prior Publication US 2025/0235889 A1, Jul. 24, 2025
Int. Cl. B05B 15/68 (2018.01); B05B 1/14 (2006.01)
CPC B05B 15/68 (2018.02) [B05B 1/14 (2013.01)] 13 Claims
OG exemplary drawing
 
1. A rigid-flexible coupled multi-hole spray gun device with variable size for a spraying robot, comprising a rigid-flexible coupled deformable bracket, a spray head assembly, a spray gun base, and further including a paint supply assembly, wherein
the rigid-flexible coupled deformable bracket includes rigid-flexible coupled elastic split-bodies with a number of N, N>2, the N rigid-flexible coupled elastic split-bodies are distributed along a circumferential direction, and a twin threaded rod is arranged between two adjacent rigid-flexible coupled elastic split-bodies along a circumferential direction, threads of the twin threaded rod are divided into two threaded segments with opposite rotating directions, the two threaded segments of the twin threaded rod are rotatably installed in the two corresponding rigid-flexible coupled elastic split-bodies respectively, and one end of each of the rigid-flexible coupled elastic split-bodies in a same direction is respectively connected to the spray gun base through a first guide rail pair, each of the rigid-flexible coupled elastic split-bodies is restored to an original shape of the rigid-flexible coupled elastic split-body under an elastic action, the rigid-flexible coupled deformable bracket is restored to an original shape of the rigid-flexible coupled deformable bracket as a whole, when the twin threaded rod is rotated, the two corresponding rigid-flexible coupled elastic split-bodies are moved away from a central axis of the rigid-flexible coupled deformable bracket or approximate to the central axis of the rigid-flexible coupled deformable bracket;
the spray head assembly includes a plurality of nozzles and nozzle installation components configured to install the nozzles, in the rigid-flexible coupled deformable bracket, another end of each of the rigid-flexible coupled elastic split-bodies in a same direction is connected to the nozzle installation component through a second guide rail pair; and
the paint supply assembly is configured to deliver spray paint to the nozzles in the spray head assembly.