Digital printing machine nozzle refrigerating device and using method thereof

A digital printing machine nozzle refrigerating device, comprising a base and a nozzle disposed on the base;

• wherein a water-cooling system and a constant-temperature adjusting system are covered outside the nozzle, the water-cooling system comprises a water-cooling side plate and a plurality of water-cooling horizontal bars, the plurality of water-cooling horizontal bars are divided into two parts and horizontally disposed on both sides of the water-cooling side plate, the vertical water-cooling horizontal bars are arranged at intervals, and look-down sections of the water-cooling side plate and the water-cooling horizontal bars on both sides are U-shaped;
• the constant-temperature adjusting system comprises a constant-temperature side plate and a plurality of constant-temperature horizontal bars, the plurality of constant-temperature horizontal bars are divided into two parts and horizontally disposed on both sides of the constant-temperature side plate, the vertical constant-temperature horizontal bars are arranged at intervals, and look-down sections of the constant-temperature side plate and the constant-temperature horizontal bars on both sides are U-shaped;
• and
• the water-cooling horizontal bars and the constant-temperature horizontal bars are capable of being mutually plugged into each other's gaps, a water circulation assembly is disposed in the water-cooling horizontal bars, the constant-temperature horizontal bars are internally provided with vacuum pipes along length directions thereof, a constant-temperature adjusting assembly is disposed on the base, and the constant-temperature adjusting assembly is used for adjusting the amount of a liquid metal material squeezed into the vacuum pipes.