Offset waterway faults

Waterway troubleshooting is similar to ink path troubleshooting. The ideal state of the waterway is: the water layer is uniform, stable, and has the least amount of water. The benchmark of the waterway is also the impression cylinder, and its regulation should also follow the benchmark principle. In the following, the general method of waterway troubleshooting is analyzed through the waterway transmission chain diagram.

Water leaking

(1) Renewed welding or replacement of the bucket;

(2) The backwater of the bucket shall not be cleaned and the return pipe shall be smoothed;

(3) Installation of the bucket is not suitable for reinstallation.

2. The bucket is not water

(1) The roller is filled with oily material and then cleaned.

(2) The fountain roller does not come into contact with the water surface. The water in the water bucket is too little, add water;

(3) Reinstall the water bucket opposite the edge of the bucket roller and the bucket;

(4) The dampening solution is too weak to increase the amount of wetting agent;

(5) The bucket roller does not turn or the rotation speed (rotation angle) is too low to increase the rotation speed.

3. Water transfer roller does not transmit water

(1) The pressure between the water transfer roller and the water roller is too small to increase the pressure;

(2) The pressure between the transfer roller and the trial roller is too small to increase the pressure F

(3) Damage to bearings at both ends of the water transfer roller Replace the bearing;

(4) The pressure between the water transfer enthalpy and the squeezing roller is too high, squeeze the water to reduce the pressure;

(5) The pressure between the water transfer roller and the string water roller is too large, and the water is squeezed to reduce the pressure;

(6) The water glue roller above the water transfer roller is used to change the water glue.

(7) There are oily substances above the water limbs to clean the water gel city.

4 string wood roller work bad

(1) The string momentum of the water roller is too small or not to check the working status of the single exhaust mechanism;

(2) The surface of the skewer roll is not cleaned and then printed;

(3) Water roller surface dehydration replacement rate Water roller.

5. Bad working roller

(1) The pressure between the water roller and the plate is too small to increase the pressure;

(2) The pressure between the water roller and the printing plate is too great to reduce the pressure;

(3) The pressure between the water roller and the water roller is too small to increase the pressure;

(4) The pressure between the water roller and the water roller is too small to reduce the pressure;

(5) Miscellaneous failures of the water roller and water roller.

6. Poor plate transfer water

(1) The blank part of the printing plate is not water-absorbing, and the graphic part does not absorb ink to replace the printing plate;

(2) Other troubles of the plate cylinder and its remedy are the same as that of the ink path.

7. Paper is badly wet

(1) The surface of the paper is not evenly absorbent, causing too much water on the surface of the blanket to replace the paper;

(2) The amount of water absorbed by the surface of the paper is too large, causing the paper to deform, and its tensile strength is greatly reduced;

(3) There are oily substances on the surface of the paper, causing watery or poor ink. Check the air flow from the pressure foot or mouthpiece for oil mist. If there is oil mist, repair the air pump; otherwise, replace the paper.