The screw is worn and slipped seriously
If the screw is severely worn, the material will not be fed. For customers who like to buy a second-hand vertical injection molding machine, they will often encounter blockage of the barrel or insufficient extrusion pressure, all because of the serious wear of the wear-resistant parts Caused by, especially the screw, extrusion wear is a common thing, so it should be replaced regularly.
Whether the hydraulic motor is damaged
The hydraulic motor is an important part to control the pressure. If it is damaged, the screw will not be able to rotate due to insufficient pressure, which will also cause abnormal feeding. Check whether the pressure of the hydraulic motor is normal, listen to the sound to distinguish whether there is normal rotation.
Carbonization and vaporization in the barrel
The injection molding machine needs to heat the raw materials into a liquid state during injection molding, and carbonization or vaporization of the barrel will inevitably occur after years of use. If this occurs, the barrel needs to be shut down to clean the barrel, so as to facilitate the next normal operation. Production operations.
