The invention discloses a high-precision plate washing head, and relates to the technical field of plate washing heads. The head specifically comprises a supporting mechanism, connecting devices and aplate washing needle
assembly, wherein the connecting devices are mounted on the front side and the rear side of the supporting mechanism, the interior of the supporting mechanism is vertically provided with the plate washing needle
assembly in a penetration mode, the plate washing needle
assembly comprises a first gas injection cylinder, a second gas injection cylinder, a third gas injection cylinder, a communicating
pipe, a
liquid injection pipe, a gas receiving
pipe, a rubber folding cylinder, a taper sleeve, bristles and a needle pipe, the first gas injection cylinder, the second gas injection cylinder, and the third gas injection cylinder are sequentially connected in the vertical direction, the
liquid injection pipe is welded to the top end of the first gas injection cylinder, the rubber folding cylinder is bonded to the bottom end of the third gas injection cylinder, and the bottom end of the
liquid injection pipe communicates with the needle pipe. According to the high-precision plate washing head, stretching-out and drawing-back of all plate washing needles can be independently controlled through a
gas pressure principle, and the stretching-out and drawing-back amount ofeach plate washing needle is completely dependent on the amount of gas exhausted or injected, so that the precision is high.