Poulos

The first reason is that the cold air has been on for a long time, causing the mold surface to be too cold.
At this time, we have to check whether the rubber at the exit of the die surface has been plasticized and melted.
The second reason is that the boot temperature is too low.
At this time, it is necessary to check whether the temperature of each part of the extrusion barrel and the die meets the standard requirements? Although the outside temperature of each part reaches the standard, if the heating time is not enough, the inside and outside temperatures will be inconsistent; check whether there is a heater or thermocouple damaged? If any electrical components are damaged, repair or replace them immediately.
The third reason is that the temperature of the extrusion barrel or die is too high, the screw and barrel of the melting section are worn, the screw is carbonized, and the feeding is not smooth.
Check the sensitivity of the temperature controller and deal with it appropriately. The die head temperature controller should be of higher sensitivity.
The fourth reason is that the transmission belt is loose or detached.
The old transmission belt should be replaced immediately, and an idler pulley should be installed if it can be used to adjust the belt tension to prevent the belt from slack and fall off again.
The fifth reason is that there is glue sticking in the screw feed part.
Before shutting down each time, lower the temperature slightly; wait until the screw feed part is completely out of rubber before shutting down; after starting the machine, if the screw is stuck with rubber, clean the screw first. If it is not convenient to clean, Use a plastic rod or a wooden rod to squeeze the material under the feed port forcefully to make the rubber sticking to the screw feed part move forward. At this time, pay attention to the plastic rod or wooden rod being bitten by the screw, or wood chips falling off. , Never use metal rods.
The sixth reason is that there is agglomeration of glue in the throat of the feeding cylinder.
The water temperature of the cooling water jacket at the throat junction of the feeding cylinder should be controlled below 40C°. If the filter is clogged, it must be replaced with a new one in time.
The seventh reason is that the back pressure is too low.
The phenomenon caused by the back pressure is too low, the discharge is unstable, which can be corrected by increasing the back pressure. The eighth reason is that the DC motor voltage fluctuates too sharply. A voltage stabilizer should be installed to ensure the stability of the voltage.
The ninth reason is that the rotation speed of the clamping roller is uneven, or the pressure between the rollers is too large. At this time, check whether the clamp stick is eccentric or not? Whether the transmission belt is worn or loosened off; when the pressure between the rollers is too low, slippery will occur, the air pressure or spring can be adjusted to increase the pressure. The tenth reason is that too much recycled material is mixed with crushed materials.
It is necessary to reduce the proportion of mixed powder, and try not to add recycled materials; if you need to add crushed materials, it is best to make pellets first to stabilize the discharge.