Nozzle auto-cleaning device and nozzle auto-cleaning method

A nozzle auto-cleaning method by using a nozzle auto-cleaning device, the nozzle auto-cleaning device comprising a base and a cleaning piece feeding unit disposed on the base;

• the base having a bearing surface and being configured to be movable along at least one direction of a first direction intersected with the bearing surface, a second direction, and a third direction, the second direction and the third direction being intersected with each other in a plane of the bearing surface;
• and the cleaning piece feeding unit being disposed on the bearing surface, the nozzle auto-cleaning method comprising:
• controlling the cleaning piece feeding unit to transport a cleaning piece installed inside the nozzle auto-cleaning device along the first direction so that a first portion of the cleaning piece is protruded in a direction away from the bearing surface and inserted into a nozzle;
• and
• controlling the base to move along at least one direction of the first direction, the second direction, and the third direction so as to drive the first portion of the cleaning piece to move inside the nozzle, wherein
• the cleaning piece feeding unit in the nozzle auto-cleaning device comprises at least two clamping parts which are sequentially arranged along the first direction;
• each of the at least two clamping parts is configured to be switched between a clamping state and a releasing state;
• and the at least two clamping parts comprise at least one movable clamping part which is configured to be movable along the first direction so that the cleaning piece is transported in the direction away from the bearing surface,
• in the nozzle auto-cleaning method, controlling the cleaning piece feeding unit to transport the cleaning piece installed inside the nozzle auto-cleaning device along the first direction so that the first portion of the cleaning piece is protruded in the direction away from the bearing surface and inserted into the nozzle comprises:
• controlling the at least one movable clamping part to move towards or move away from the bearing surface along the first direction so as to transport the first portion of the cleaning piece, the movable clamping part being in the releasing state during moving towards the bearing surface, and being in the clamping state during moving away from the bearing surface.