What are the application advantages of cone twin barrel […]
What are the application advantages of cone twin barrel screw in injection molding machine
It can be seen from the extrusion process that the injection screw barrel is operated under high temperature, certain corrosion, strong wear and large torque. Therefore, the conical twin-barrel screw must meet high temperature resistance and not deform under high temperature; wear resistance Long life; corrosion resistance, material is corrosive; high strength, can accept high torque, high speed; has good cutting function; after heat treatment, the residual stress is small, thermal deformation is small.
There are many advantages for the injection molding machine to use the cone twin barrel screw, but in the production process, we need to pay attention to the maintenance and maintenance of the cone twin barrel screw. If the contact part of the nozzle and the mold positioning sleeve has single-sided contact or poor contact, the front end The spherical R part will deform, forming a melt escape groove, causing the nozzle to overflow, and the caliber part will be deformed. Therefore, overflow should be checked and repaired in time. The threaded part of the conical twin barrel screw nozzle and the sealing surface on the side of the barrel should be checked regularly. If severe wear or corrosion is found, it should be replaced in time. Therefore, we need to check the internal passage of the screw nozzle of the cone twin barrel. The surface quality of the molten band can be observed through the air jet, and the residual melt discharged from the nozzle can more accurately reproduce the flow path condition in the nozzle.
Application advantages of cone twin barrel screw:
1. Cone twin barrel screw structure is simple and low price;
2. It is suitable for plasticizing and extrusion of polymers, and suitable for extrusion and processing of pellets. The shear degradation of the polymer is small, but the material stays in the extruder for a long time;
3. Simple control of conical twin barrel screw and simple technical control;
4. The conical twin barrel screw has excellent mixing and plasticizing ability, and the material stays in the extruder for a short time, which is suitable for powder processing.