Common malfunctions during the operation of powder packaging machines can be categorized into mechanical, electrical, control system, and operational issues. Below are some typical malfunctions and brief analyses:
I. Mechanical Malfunctions
Material supply is insufficient or blocked
Cause: Powder caking, unreasonable hopper design, auger feeder wear, or insufficient air pressure (pneumatic type).
Solution: Clear caked powder, check auger or pneumatic feeding system, replace worn parts.
Sealing is not tight or powder leakage
Cause: Insufficient heating temperature, misalignment of sealing film, wear of sealing die, or uneven pressure.
Solution: Adjust temperature and pressure parameters, calibrate film position, replace die.
Inaccurate measurement
Cause: Sensor malfunction, unstable auger feeder speed, changes in powder flowability (e.g., moisture absorption).
Solution: Calibrate sensor, check drive motor, improve powder storage conditions.
Mechanical parts make unusual noise/get stuck
Cause: Lack of lubrication in bearings or gears, foreign objects entering transmission parts, loose parts.
Solution: Regular lubrication, clean foreign objects, tighten screws.
II. Electrical Malfunctions
Motor overload or shutdown
Cause: Unstable voltage, motor damage, excessive load (e.g., powder blockage).
Solution: Check power supply, clear blockage, replace motor.
Sensor failure
Cause: Photoelectric sensor contamination, position offset, or aging wiring.
Solution: Clean sensor probe, adjust position, check wiring.
III. Control System Malfunctions
PLC or touch screen abnormality
Cause: Program error, power interference, hardware failure.
Solution: Restart the system, check grounding, contact the manufacturer to repair the program.
Parameter loss or drift
Cause: Battery power failure (parameter saving), misoperation.
Solution: Replace backup battery, re-enter parameters.