Large fill volume variation in filling machines can be investigated from three main areas: mechanical structure, material characteristics, and operation and environment.
1. Mechanical Structure Causes
Feeder faults: If the feeder discharge port has unstable size or an irregular shape, or if the rotation speed is uneven or abnormal vibration occurs, material delivery stability will be affected. As a result, the amount of material discharged each time may not be consistent.
Piston wear: For filling equipment that uses a piston type, long-term use will wear the piston. The gap between the piston and the filling chamber increases, causing material leakage and unstable fill volume.
2. Material Characteristic Causes
Poor material flowability: If the material has inconsistent particle sizes or abnormal moisture content, its flowability will decrease. It may easily block in the hopper or conveying pipe, causing fluctuations in the amount filled each time.
Uneven material density: When the material is not fully mixed, different parts may have different densities. The same volume of material will then have different actual mass, resulting in large fill volume variation.
3. Operation and Environment Causes
Equipment not calibrated or calibration invalid: If the filling machine is not accurately calibrated before use, or if calibration parameters change during use, fill volume variation will occur directly.
Ambient temperature and humidity effects: Changes in workshop temperature and humidity can alter the physical properties of the material. For example, high humidity may cause the material to cake, interfering with filling accuracy and leading to fill volume variation.
For filling machine manufacturers and maintenance teams, Hansheng Automation can machine replacement and non-standard parts such as augers, pistons, filling nozzles, hoppers, and metering blocks from customer drawings in single pieces or small batches.
