The maintenance of high-speed flexo printer slotter die cutting machines needs to be systematic and standardized to ensure long-term stable operation and extend the service life of the equipment.

1. Daily maintenance (per shift)

Cleaning and maintenance

Remove paper scraps and ink residue from die-cutting plates, indentation lines, and rollers (using non-woven fabric and alcohol).

Check and clean the filter screen of the suction system to prevent blockage (air pressure loss ≤ 0.1MPa).

Lubrication inspection

Add high-temperature lubricating grease (such as Shell Alvania 2) to the chain, guide rail, bearings, and other parts
Check the oil level of the oil mist lubrication system to ensure smooth oil flow.

Security confirmation

Test whether the emergency stop button and photoelectric protection device are sensitive.

2. Weekly maintenance of the cardboard flexo printing die cutting machine

Key component inspection

Wear detection of die-cutting blades (allowable wear ≤ 0.3mm), replace if necessary.

Check if the indentation steel wire is deformed (straightness error ≤ 0.1mm/m).

Transmission system

Adjustment of synchronous belt tension (deflection ≤ 5mm/100N pressure).

Gearbox oil level and quality inspection (recommended ISO VG 220 gear oil).

3. Monthly maintenance

Precision calibration

Use a laser calibrator to check the accuracy of die-cutting and printing alignment (error ≤ ± 0.2mm).

Adjust the opening and closing time of the paper teeth tray (standard value: opening angle of 120 °± 2 °).

Electrical system

Clean the cooling fan of the servo motor and check the shielding layer of the encoder signal line.

Test the response status of PLC input/output points.

4. Annual major overhaul

Comprehensive dismantling and inspection

Replace the main transmission bearing (such as SKF 6312 deep groove ball bearing).

Check the hydraulic system seals (such as O-rings, cylinder piston rods).

System upgrade

Update PLC program and HMI human-machine interface parameters.

Re calibrate the pressure sensor (error ≤ 1% FS).

Precautions

Before maintenance, the power of the automatic flexo ink printer slotter die cutter machine must be cut off and the hydraulic system pressure must be released (pressure gauge reset to zero).

Use original spare parts such as Bosch die-cutting plates and Heidelberg servo motors to ensure compatibility.
After maintenance, a no-load test run (30 minutes) and first piece quality inspection are required.

If you are also interested in this machine,please don’t hesitate to contact us:

Overseas manager: Tom Wang

Email:cartonmachine.tomwang@aliyun.com

​Phone/Wechat/Whatsapp:+86 13303078975