How to clean the screw of twin-screw extruder

1. First, heat the barrel to the molding temperature of the residual material inside the barrel;

2. After heating up to the molding temperature, remove the machine head while it is still hot, and organize the materials at the end of the barrel hole and the end of the screw;

3. Close the power supply, remove the pressure and temperature measuring components and heater on the machine head;

4. Loosen the two sleeve couplings, observe and remember the splines and markings at the tail of the two screws according to the type of tightening screw on the screw shaft end;

5. Remove the fastening screws on the heads of the two screws, note that they are left-handed screws. Use a special tool for screw removal to slowly pull out a section of the two screws synchronously, and use a copper wire brush or copper shovel to quickly remove the material on the surface of the screws while they are hot;

6. Pull out all the screws, place them flat on a wooden board, remove the screw disassembly tool, and take advantage of the heat to disassemble and organize the screw components. If the material seeps into the screw shaft and makes it difficult to disassemble the screw components, you can use a wooden hammer or copper rod to quietly tap around the screw components, loosen them, and then remove the components. If it is still difficult to remove, it is necessary to put it back into the barrel and heat it again. After the material melts, it can be unloaded while it is still hot.