What are the common faults of paper bag machines and their solutions?

August 08, 2024
Mike Dooley

Paper bag machines may encounter many common faults during use. Here are some common faults and their solutions:

 

1. Temperature control failure

Fault phenomenon: Inaccurate or unadjustable temperature control.

Solution:

Check whether the temperature sensor is damaged or loose. If so, replace or tighten it in time.
Check whether the control circuit is normal. Adjust the temperature setting value after confirmation.
Regularly maintain the equipment to ensure the stable operation of the temperature control system.

 

2. The bag is not sealed firmly

Fault phenomenon: The seal is easy to tear or leak.

Solution:

Adjust the sealing temperature to ensure that the temperature is moderate and avoid poor sealing quality due to too high or too low temperature.
Clean the sealing strip, remove residues, and keep it clean and flat.
Adjust the sealing pressure according to the bag material and thickness to ensure a firm seal.
Check the sealing knife regularly to ensure that it is sharp and installed correctly, and replace it if necessary.

 

3. Paper jam or paper blockage

Fault phenomenon: The paper is stuck or blocked during transmission.

Solution:

Clear obstacles on the paper transmission path to ensure smooth paper transmission.
Check whether the paper thickness meets the machine requirements, and avoid using too thick or too thin paper.
Adjust the tension and speed of the paper transmission system to ensure stable paper transmission.

 

4. Irregular bag shape

Fault phenomenon: The bag is not neatly shaped or the size is inaccurate after forming.

Solution:

Check whether the mold is damaged or worn. If so, replace or repair it in time.
Adjust the mold gap and angle to ensure accurate bag forming.
Check the paper quality and size to ensure that it meets production requirements.

 

5. The cold cutter cannot cut continuously

Fault phenomenon: The cold cutter cannot cut the paper or cuts unevenly.

Solution:

Check whether the cutter is sharp. If it is worn, sharpen it in time or replace it with a new one.
Check the balance of the upper and lower knives, adjust them to the appropriate position, and ensure uniform cutting.

 

6. The bag is deviated or not accurately positioned

Fault phenomenon: The bag deviates or cannot be accurately positioned during the transmission process.

Solution:

Adjust the position of the photoelectric sensor to ensure that the bag position can be accurately detected.
Check whether the conveyor belt or chain is loose or damaged. If so, tighten or replace it in time.
Clean up the debris and residue on the conveying system and keep it clean and tidy.

 

7. The equipment suddenly stops or fails to start

Fault phenomenon: The equipment suddenly stops or fails to start during operation.

Solution:

Check whether the power supply and power cord are connected properly to ensure stable and reliable power supply.
Check whether the fuse is blown. If so, replace it with a new one in time.
Check whether the switches and buttons on the control panel are in the correct position to ensure correct operation.

 

8. Abnormal sound

Fault phenomenon: The equipment produces abnormal sound during operation.

Solution:

Stop using the equipment and check the parts that may produce abnormal sound, such as motors, bearings, etc.
Check whether there are loose parts or worn parts. If so, tighten or replace them in time.
If you cannot solve it yourself, contact professional technicians for maintenance.

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