What should I do if the discharge of the pellet machine die is uneven?

1. Die Self-Problems

Clogging or uneven wear of die holes: Some die holes are blocked by impurities in the raw materials, or the inner walls of the die holes wear unevenly after long-term use, resulting in significant differences in the material passing speed.

Improper die installation: There is a deviation in the concentricity between the die and the pressure roller, or the tightness of the die fixing bolts is inconsistent, causing uneven extrusion force.

2. Material Pretreatment Problems

Inappropriate material moisture content: Excessively high humidity easily causes the material to stick and block in the die holes, while excessively low humidity leads to local discharge difficulties due to poor fluidity.

Uneven material mixing or crushing degree: Large differences in the particle size of raw materials, or uneven mixing of additives, result in some die holes having a fast feeding speed and others a slow one.

3. Equipment Commissioning and Component Wear

Improper adjustment of pressure roller gap: The gap between the pressure roller and the die is too large or too small. Areas with small gaps experience excessive extrusion, while areas with large gaps have insufficient extrusion.

Wear of pressure rollers or transmission components: Uneven wear on the surface of the pressure roller, or loosening of the transmission system (such as gears and bearings), leads to unstable rotation speed of the pressure roller and disordered discharge rhythm.