Nozzle plate testing device

The invention discloses a nozzle plate testing device, which comprises a bottom plate, a detection assembly for detecting the air injection condition of each air injection port, an adapter plate, an air supply joint and a driving module, and is characterized in that a nozzle plate is detachably mounted on the bottom plate; the detection assembly is arranged on the bottom plate; a plurality of spaced vent holes are formed in the adapter plate, and each air nozzle is communicated with at least one vent hole; the air supply joint is communicated with the plurality of vent holes in a switching manner so as to guide air to the corresponding vent holes in a switching manner; the driving module is connected with the air supply connector, and the driving module drives the air supply connector to move so as to communicate with the multiple vent holes in a switching mode. According to the nozzle plate testing device, automatic air supply can be achieved, the air supply efficiency and the air supply accuracy (including