Encyclopedia of waterway faults of the hottest off

2022-08-15
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Water path troubleshooting of offset press

water path troubleshooting is similar to ink path troubleshooting. The ideal state of the waterway is that the water layer is uniform and stable, and there is inevitably a gap in the middle transmission link, so the water consumption is the least. The benchmark of the waterway is also the impression cylinder, and its adjustment should also follow the benchmark principle. The general method of troubleshooting the waterway is analyzed through the transmission chain diagram of the waterway

1. The water bucket leaks

(1) the water bucket is broken and re welded or replaced

(2) the return water of the bucket is not high, clean the return pipe and make its routing smooth

Until the conditioning is qualified

(3) the water bucket is not installed properly and reinstalled

2. The bucket does not fill with water

(1) the bucket roll is full of oily substances, and then fill with water after cleaning

(2) the bucket roll does not touch the water surface, and there is too little water in the bucket, so add water

(3) reinstall the bucket when the bucket roll rubs against the bucket edge

(4) the acidity of the fountain solution is too weak to increase the amount of wetting parts

(5) the bucket roll does not rotate or the speed (angle) is too low to increase the speed

3. The water transfer roller does not transfer water

(1) the pressure between the water transfer roller and the bucket roller with the function of automatic zero adjustment is too small to increase the pressure

(2) the pressure between the water transfer roll and the water review roll is too small. Increase the pressure f

(3) the bearings at both ends of the water transfer roll are damaged. It is estimated that the demand for power batteries will reach 96.9gwh in 2020

(4) the pressure between the water transfer wonton and the bucket roll is too large, squeezing the water out to reduce the pressure

(5) the pressure between the water transfer roll and the water string roll is too large, squeezing out the water to reduce the pressure

(6) polish and replace the water glue pile on the water transfer roller

(7) there are oily substances on the water limb line to clean the water glue city

4. Poor operation of wood roller

(1) the momentum of water roller is too small or does not move. Check the working state of the mechanism

(2) the surface of the water roller is not clean and then printed

(3) replace the water roller due to dehydration on the surface of the water roller

5. Poor work of the landing roller

(1) the pressure between the landing roller and the printing plate is too small to increase the pressure

(2) the pressure between the landing roller and the printing plate is too large to reduce the pressure

(3) the pressure between the landing roll and the water string roll is too small to increase the pressure

(4) the pressure between the landing roll and the water string roll is too large to reduce the pressure

(5) other faults of the landing roller simultaneous interpreting water roller

6. Poor water transmission of the printing plate cylinder

(1) the blank part of the printing plate does not absorb water, and the graphic part does not absorb ink. Replace the printing plate

(2) other faults and troubleshooting methods of the plate cylinder are the same as those of the ink path

7. Poor paper wetting

(1) uneven water absorption on the surface of the paper, resulting in too much water on the surface of the blanket to replace the paper

(2) the water absorption on the paper surface is too large, causing paper deformation and greatly reducing its tensile strength

(3) there are oily substances on the paper surface, causing poor watering or inking. Check whether there is oil mist in the air flow from the presser foot or blowing nozzle. If there is oil mist, overhaul the air pump; Otherwise, replace the paper

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