How Does A The 6-color CI Napkin Flexographic Printing Machine Perform Routine Maintenance? How To Extend The Service Life Of Equipment?

The 6 Color CI Napkin Flexographic Printing Machine has the advantages of fast printing speed, overlay accuracy, multi-color continuous printing and environmentally friendly flexographic printing printing, and has become an important equipment of modern household paper production enterprises. Whether it's napkins, Kleenex, Kitchen Paper, or branded bespoke tissues, the CI flexographic printing machine can meet high quality and efficient production needs.
However, even the most advanced equipment cannot be separated from the maintenance and management of scientific norms. If lack of maintenance for a long time, it is easy to appear printing accuracy, uneven ink supply, mechanical wear and tear, equipment failures frequently, not only affect product quality, but also increase maintenance costs and downtime.
For napkin manufacturing enterprises, the establishment of a complete equipment maintenance system can not only prolong the service life of equipment, but also improve production stability and reduce overall operating costs. So how should the 6-color CI napkin flexographic printing machine be maintained on a daily basis? What are some other methods to effectively extend the lifespan of your device? This paper will introduce mechanical system, ink supply system, electrical control and operation management.
1.Clean the equipment daily and keep the production environment clean and tidy.
flexographic printing process, paper fibers, paper powder, ink residue, dust and so on easy to pile up in various parts of the equipment.
If left unwashed for long periods of time, this can lead to:
Decreased printing quality;
Mesh roller blockage
Wear and tear of transmission mechanism;
Sensor malfunction.
It is recommended that the following areas be cleaned after each production shift:
Unwinding device;
Print unit;
Mesh roller and plate cylinder;
Central impression cylinder (CI cylinder);
rolled;
Waste paper, ink collection area.
For ink residue, should use a special cleaning agents suitable for flexographic printing equipment, avoid the use of rubber rollers or printing plates may corrode chemical solvents.
2. Check mesh roller regularly to ensure that the ink supply is uniform.
Anilox Roller is one of the most important core components of flexographic printing press, used to transfer a certain amount of ink evenly to the printing plate.
If the mesh is blocked by ink, paper powder or impurities, it is easy to:
Insufficient ink volume;
Uneven color distribution;
Printed flowers;
The pattern is blurry.
In maintenance process, particular attention should be paid to:
whether the mesh is blocked;
whether there are scratches on the surface of the drum;
Whether the surface is frayed.
It is recommended to use ultrasonic cleaning or professional mesh roller cleaning equipment for deep cleaning on a regular basis to maintain a stable ink supply.
3. Maintenance printing plate cylinder and printing plate
The quality of the printing plate directly determines the quality of the image and text transfer.
After long continuous production, the following should be checked:
whether the plate is worn;
whether the text is distorted;
Cracked gifts;
How secure is the hold.
When replacing the printing plate, attention should be paid to the accuracy of the installation position, so as not to affect the printing accuracy due to installation error.
After printing plate production, should be washed in time to avoid ink drying, affecting subsequent use.
4. Check the status of CI central embossed cylinders
the CI flexographic printing machine is the largest feature of the central impression cylinder.
This roller directly affects:
Overprint accuracy;
Paper runs steadily;
Printing quality.
In maintenance process, it is important to check:
Whether the roller surface is clean;
whether there are scratch present;
Whether there are foreign objects attached;
Run steady.
Keeping the surface of the drum clean can effectively reduce paper slippage and printing errors.
V. Regularly lubricate mechanical transmission components
Long-term high-speed operation of equipment can cause friction of guide rails, bearing, gear and chain.
If lubrication is inadequate, it can easily lead to:
Mechanical wear;
Increased vibration;
Increased noise;
Decreased accuracy.
According to the Equipment Maintenance Manual, the following components shall be lubricated regularly:
Guide;
Bearing;
Gears;
Chain;
Screw rod;
Twinning.
Use the oil or grease recommended by the manufacturer and avoid mixing different types of lubricant to ensure lubrication effectiveness.
6. Check tension control system
Napkins have a thinner base and are sensitive to changes in tension.
Abnormal tension can easily lead to:
Offset printing;
Paper wrinkling;
Unorganized winding;
Printing pattern deformation.
During routine maintenance, you will need to check:
Tension sensor;
Braking system;
(a) Unwinding mechanism;
Roll up the controls.
It is an important condition to ensure high speed and stable operation of printing to ensure the normal operation of automatic constant tension system.
7. Maintenance of ink supply system and scraper device
The ink supply system determines the consistency of printing colors.
Daily inspections should include:
Whether the ink tank is clean;
Ink flow is smooth;
Whether ink pump works properly;
The pressure of the scraper uniform was even.
If the scraper is badly worn, it can lead to:
Uneven ink layer;
Obvious color difference;
Increased Ink waste.
It is suggested that the the scraper should be replaced regularly according to the output, and the scraper should be in uniform contact with the mesh roller.
8. Periodic inspection of electrical control system
Modern 6-color CI flexographic printing machines generally adopts PLC control system and servo drive systems.
Maintenance includes:
Check that circuit connection is secure;
Wash the dust in the control cabinet;
Check the operation of cooling fan;
Check that the touch screen is working properly.
Check sensor feedback signal.
If alarm information found, it should be promptly investigated to prevent glitches from becoming major problems.
9. Reasonable adjustment of equipment parameters to avoid overload operation
Different paper materials require different printing parameters.
For example:
Printing pressure;
Tension;
Ink viscosity;
Drying temperature;
Printing speed.
Chronic overload can lead to:
Electric overheating;
Speed up the wear and tear of the roller;
Shortening the lifespan of printing plates;
Printing accuracy down.
Therefore, equipment parameters should be adjusted according to different products in time to avoid extreme operation of the equipment for a long time.
X. Properly maintain the drying system.
Efficient drying can ensure rapid solidification of ink.
Inspections should be conducted regularly:
Thermal air systems;
Heating device;
Fan operation;
Temperature controller;
Exhaust system.
Keeping the drying system working properly not only improves printing quality, but also avoids ink smudging and pattern ghosting.
11. Afghanistan Establish preventive maintenance systems.
Compared with post-failure maintenance, preventive maintenance can effectively reduce the downtime risk.
Businesses can develop the following maintenance plans:
Daily maintenance:
Cleaning equipment;
Check the ink system;
Check for tension
Clean the mesh roller.
Weekly maintenance:
Lubricate mechanical components;
Inspection transmission mechanism;
Verify printing accuracy.
Monthly maintenance:
Check PLC control system;
Check the servo motor;
Cleaning electrical control cabinet;
Calibrating sensors.
Every six months or one year:
Thorough inspection of CI rollers;
Replace vulnerable parts;
Calibration of overall precision of machine;
Check electrical systems.
Establishing a standard maintenance procedure will help to prolong the service life of equipment and maintain the equipment running steadily for a long time.
12. Strengthen operator training
Standardized operation is also an important component of equipment maintenance.
Businesses should regularly train operators in:
Correct start and shutdown process;
Printing plate installation method;
Parameter-setting techniques;
Daily inspection items;
Fault identification capability;
Safe operation specification.
After the operator is familiar with the performance of the equipment, the abnormal situation can be detected in time to reduce the injury of personnel and improve the utilization of the equipment.
Conclusion:
The long-term stable operation of six-color CI napkin flexible printing press cannot be separated from science, system maintenance and management. By cleaning equipment, regularly maintaining mesh rollers and printing plates, maintaining CI central imprint rollers, lubricating transmission components, checking tension and ink supply system, maintaining electrical control system systems, and establishing preventive maintenance systems, enterprises can not only extend the useful life of their equipment but also maintain high speed and high precision printing quality.
With the development of intelligent, automatic and green life paper industry, equipment maintenance is not only a means to reduce maintenance cost, but also an important link to ensure production efficiency, stabilize product quality and improve enterprise competitiveness. For napkin production enterprises, adherence to standardized maintenance and scientific management will help equipment to operate optimally and create higher productivity and long-term value for the enterprise.