Adjustment and maintenance experience of ink rolle

2022-08-09
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Adjustment and maintenance experience of ink rollers of water free offset press

Heidelberg Speedmaster CD102 - after experimental analysis, the rubber drum of 5+l water free offset press uses hard lining. In order to ensure the normal operation of the equipment, the printing points are clear, the layers are rich, and fatigue is similar to stress fracture, each group of rubber rollers of the press should be checked in the following order

1) when cleaning or repairing the printing machine, put the button in the "safe" position

2) carefully check the safety devices of the printing machine every day to ensure the normal operation of the machine

3) check the ink bar on the image cylinder and the printing plate

when the printer is in a static state, press the "inking roller close/close" button to engage and separate the printing plate and the inking roller (the inking roller is not above the groove of the printing plate cylinder), jog the printer forward at a diffuse speed, check whether the ink bars on the printing plate are uniform, and adjust the pressure of the printing plate and the inking roller with the knurled control handle marked with "+", "-" on the driving operation surface, Turning in the "+" direction increases the pressure between the ink roller and the printing plate, and vice versa

4) after production, special cleaning fluid must be used to clean the ink roller, and the speed should be 5000-600 data processing 0 rpm. After the roll surface is free of dirt, it should be cleaned again with gasoline. After that, check whether the cots have residual dirt. If they are not cleaned thoroughly, pitting and bright film will be formed on the surface of the cots, which will affect the efficacy of the cots. It is best to use the cleaning solution recommended by Heidelberg, which has good compatibility and safety, has no pollution to the environment, and will not damage the elasticity of the cots

5) the ink roller should be stored upright to avoid direct sunlight; The rubber surface shall not be under pressure and shall not be stored together with corrosive solvents

6) the elasticity and hardness of the cots directly affect the quality of printing products. For example, the elasticity of the cots is poor or deformed, and the printed products are prone to uneven color, point unsaturation, plate pasting or non inking. At this time, the cots must be replaced

the rubber drum of Heidelberg speedpa cd+l water free offset press is hard lined. In order to ensure the normal operation of the equipment, the printing points are clear and the levels are rich, each group of rubber rollers of the press should be checked in the following order

1) when cleaning or repairing the printing machine, put the button in the "safe" position

2) carefully check the safety devices of the printing machine every day to ensure the normal operation of the machine

3) check the ink bar on the image cylinder and the printing plate

when the printer is in a static state, press the "inking roller close/close" button to engage and separate the printing plate and the inking roller (the inking roller is not above the groove of the printing plate cylinder), jog the printer forward at a diffuse speed, check whether the ink bars on the printing plate are uniform, and adjust the pressure of the printing plate and the inking roller with the knurled control handle marked with "+", "-" on the driving operation surface, Turning in the direction of "+" increases the pressure between the ink roller and the printing plate. On the contrary, China's plastic machinery enterprises have expanded their opening up of emerging markets of extruders in recent years

4) after production, special cleaning fluid must be used to clean the ink roller, and the speed should be 5000-6000 rpm. After the roll surface is free of dirt, it should be cleaned again with gasoline. After that, check whether the cots have residual dirt. If they are not cleaned thoroughly, pitting and bright film will be formed on the surface of the cots, which will affect the efficacy of the cots. It is best to use the cleaning solution recommended by Heidelberg, which has good compatibility and safety, has no pollution to the environment, and will not damage the elasticity of the cots

5) the ink roller should be stored upright to avoid direct sunlight; The rubber surface shall not be under pressure and shall not be stored together with corrosive solvents

6) the elasticity and hardness of the cots directly affect the quality of printing products. For example, the elasticity of the cots is poor or deformed, and the printed products are prone to uneven color, point unsaturation, plate pasting or non inking. At this time, the cots must be replaced

source: China Printing maintenance

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