The mold is a large wearing part on the sawdust pellet machine, and it is also the largest part of the pellet machine equipment loss. It is the most easily worn and replaced part in daily production.

If the mold is not replaced in time after wear, it will directly affect the production quality and products, so it is very important to understand the circumstances under which the mold should be replaced.

1. After the die of the wood pellet machine reaches a critical point after reaching the service life. At this time, the inner wall of the die hole has been worn, and the pore diameter has become larger, and the produced particles will be deformed and cracked or the powder will be directly discharged. Pay more attention to observation.

2. The feed bell mouth of the die hole is ground and smoothed, the raw materials squeezed by the pressure roller into the die hole are reduced, and the extrusion force becomes lower, which is easy to cause the die hole to be blocked, resulting in partial failure of the die, reduced output, and increased energy consumption.

3. After the inner wall of the die hole is worn, the inner surface roughness becomes larger, which reduces the smoothness of the particle surface, hinders the feeding and extrusion of materials, and reduces the particle output.

4. After the inner hole of the ring die is worn for a long time, the wall between the adjacent die holes becomes thinner, so that the overall compressive strength of the die decreases, and cracks are likely to appear on the die after a long time. If the pressure remains unchanged, cracks occur It will continue to extend, and even mold breakage and mold explosion will occur.

5. In order to maximize the production efficiency of the pellet machine mold, do not replace the mold without affecting the quality and output. The cost of replacing the mold once is also very high.

How to make the wood pellet machine mold play a greater role? Timely and correct maintenance of the pellet machine is very important.

1. Lubrication of wood pellet machine parts

Whether it is a flat grinding machine or a ring die, the sawdust pellet machine has a large number of gears to work, so special attention needs to be paid in the usual maintenance. In the case of continuous operation, regular lubrication must be carried out according to the maintenance manual provided with the pellet machine.

Check whether there are foreign objects and miscellaneous materials between the main shaft and the rotor of the pellet machine, which will increase the friction force when the pellet machine is running, and then generate heat, which will cause the gears and transmission mechanisms to be burned and damaged.

The oil pump of some models of pellet machine continuously supplies oil for lubrication. During the daily inspection, the oil supply pump must be tested for the oil circuit and oil supply pressure.

2. Internal cleaning of sawdust pellet machine

When the pellet machine is heat treated, there will be burrs on one side. These burrs will affect the entry of materials, affect the formation of particles, affect the rotation of the rollers, and even cut the rollers. Be sure to check before testing the machine.

Check whether the grinding disc and filter screen of the granulator are blocked or not, so as to avoid impurities blocking the mesh holes and hindering the filtering effect.

3. Maintenance method of sawdust pellet machine mould

If you want to store the mold for a longer time, you need to remove the oil in the mold. If the storage time is too long, it will be difficult to remove it, which will have a great impact on the mold.

The mold needs to be placed in a place that is often ventilated and dry. If it is stored in a humid place, any mold will be corroded, and the straw filled on the mold will absorb water, speed up the corrosion process, and seriously reduce the production life and efficiency of the mold.

If the mold needs to be replaced during the work, it is necessary to clean up the particles in the removed mold. Uncleaned die holes in the press roll and die will accelerate corrosion and cause die damage and render it unusable.

When saving the mold, you need to save it carefully. The mold holes are perforated by high-speed guns, and the brightness is very high. If you want high output, you must ensure that the brightness of the mold holes is bright and clean.