Operation requirements when the plastic extruder is stopped

⑴ Stop feeding, extrude all the plastic in the extruder, and when the screw is exposed, turn off the power of the barrel and machine head, and stop heating.
⑵ Turn off the power of the extruder and auxiliary machines to stop the screw and auxiliary machines.
⑶Open the connecting flange of the machine head and disassemble the machine head. Clean the porous plate and various parts of the machine head. In order to prevent damage to the inner surface of the machine head during cleaning, the remaining materials in the machine head should be cleaned with steel bars and steel sheets, and then the plastic adhering to the machine head should be removed with sandpaper, polished, and coated with machine oil or silicone oil to prevent damage. rust.
⑷Cleaning of the screw and barrel. After removing the machine head, restart the main machine, add parking material (or crushing material), and clean the screw and barrel. At this time, the screw should be used at a low speed (about sr/min) to reduce wear. After the stopped material is ground into powder and completely extruded, compressed air can be used to repeatedly blow out the residual pellets and powder from the feeding port and exhaust port until there is no residual material in the barrel, then reduce the screw speed to zero and stop extrusion. machine, turn off the main power supply and the main cold water valve.
⑸ Safety items that should be paid attention to when extruding the extruder include: electricity, heat, mechanical rotation, and loading and unloading of bulky parts. The extruder workshop must be equipped with lifting equipment to assemble and disassemble heavy components such as the machine head and screw to ensure safe production.