Rod-shaped object surface treatment mechanism and method, oiling mechanism and coating assembly

The invention belongs to a surface treatment mechanism, and particularly relates to a rod-shaped object surface treatment mechanism and method, an oiling mechanism and a coating assembly. The rod-shaped object surface treatment mechanism comprises a mounting plate, a mounting hole is formed in the mounting plate, a rotating block is arranged on the mounting hole, and a through hole allowing a rod-shaped object to penetrate through is formed in the rotating block; the rotating block is provided with at least one treatment tool, a driving device arranged on the mounting plate and for driving therotating block to rotate is further included, and the mounting plate and the rotating block are provided with gaps penetrating through to the through hole. The rod-shaped object can enter the throughhole along the radial direction of the rotating block due to the fact that the gaps penetrating through to the through hole are formed in the mounting plate and the rotating block, compared with themode of entering the workin