1、Equipment composition and common fault points

The geogrid production line usually consists of the following main parts:

Extruder system

Rolling forming system

Punching system

Stretching system

Roll-up system

electric control system 

hydraulic system

Each system may experience different types of malfunctions and requires targeted troubleshooting.

2、Daily troubleshooting process

（1） Check before startup

Mechanical inspection

Check the lubrication condition of each transmission component to ensure sufficient lubricating grease

Check if the tightness of the belt and chain is appropriate

Confirm that all fasteners are not loose

Check the cleanliness of the mold and roller surface for any residual materials

Electrical system inspection

Check if all wiring terminals inside the control cabinet are securely fastened

Confirm that all emergency stop buttons are functioning properly

Test the effectiveness of various safety protection devices

Check the working status of sensors and limit switches

Hydraulic system inspection

Check if the hydraulic oil level is within the standard range

Observe whether the oil color is normal and there is no emulsification phenomenon

Check for leaks at all oil pipe joints

（2） Monitoring during operation

Temperature monitoring

Is the temperature of each section of the extruder within the set range

Does the hydraulic system oil temperature rise abnormally

Is the temperature of the motor and reducer bearings normal

pressure monitoring

Is the melt pressure of the extruder stable

Is the working pressure of the hydraulic system within the rated range

Is the pneumatic system pressure normal

Observation of operating status

Is there any abnormal vibration or noise during the operation of the equipment

Whether the appearance quality of the product meets the standard

Is the operation of each transmission component smooth

3、Common faults and their solutions

（1） Extrusion system malfunction

Unstable extrusion volume

Check the wear of the screw

Confirm that the feeding system is unobstructed

Check if the temperature control of the heating system is accurate

Abnormal melt pressure

Check if the filter is clogged

Confirm that the mold flow channel is not blocked

Check the working status of the pressure sensor

（2） Rolling forming failure

Uneven product thickness

Check the parallelism of the roller

Confirm the uniformity of roller temperature

Adjust the roller distance control system

Surface quality defects

Clean the surface of the roller

Check whether the raw materials are mixed with impurities

Adjust process parameters

（3） Punching system malfunction

Incomplete punching

Check the wear of the punching needle

Confirm the neutrality of the mold

Check the pressure of the pneumatic/hydraulic system

Mold card material

Timely clean up residual materials

Check the use of release agent

Adjust the mold temperature

（4） Stretching system malfunction

Uneven stretching

Check the speed synchronization of each stretching roller

Confirm that the clamping device is working properly

Adjust preheating temperature

Product breakage

Check the stretch ratio setting

Confirm that the performance of the raw materials meets the requirements

Check if the temperature control is accurate

（5） Roll up system malfunction

Unorganized winding of rolls

Adjust the correction device

Check the tension control system

Confirm the parallelism of the winding axis

Unstable tension

Check the air pressure system

Confirm that the sensor is working properly

Adjust control parameters

4、Troubleshooting of Electrical Control System Malfunctions

PLC malfunction

Check the working status of the power module

Confirm that the I/O module is connected properly

View error codes and handle them accordingly

Inverter alarm

Record the alarm code and refer to the manual

Check the insulation performance of the motor

Confirm that there are no abnormalities in the load

Sensor malfunction

Check if the wiring is loose

Test sensor signal output

Clean the testing surface

5、Troubleshooting of hydraulic system

Insufficient pressure

Check the working status of the oil pump

Confirm the set value of the overflow valve

Check the sealing of the oil cylinder

Oil temperature too high

Check the cooling system

Confirm that the viscosity of the oil is appropriate

Check for any abnormal loads in the system

6、Preventive maintenance recommendations

Establish equipment inspection system and regularly inspect key components

Perform regular maintenance according to the equipment manual requirements

Keep the equipment clean and prevent dust and foreign objects from entering

Establish equipment operation records and analyze fault patterns

Prepare sufficient commonly used vulnerable parts to shorten downtime

7、Safety precautions

Before troubleshooting, the power must be cut off and locked with a tag

High temperature components need to be cooled before inspection

Repair can only be carried out after the hydraulic system is depressurized

Use appropriate tools and personal protective equipment

Complex faults should be handled by professional technicians

Through daily troubleshooting of the system, various problems in the operation of geogrid production line equipment can be effectively prevented and resolved in a timely manner, ensuring production stability and product quality. Operators should be familiar with the structural principles of equipment, master basic fault diagnosis methods, and establish a comprehensive equipment maintenance file to provide data support for production management.