EN 
简体中文In the core part of screw design, detailed planning of spiral ribs (blades) is particularly important. These spiral ribs are not only the main components of the screw, but also the key factors affecting the efficiency and product quality of the entire extrusion process.
The design of spiral ribs requires precise balance between helix angle and pitch. The helix angle determines the forward speed and shear force of the material inside the screw, while the pitch directly affects the conveying efficiency and mixing effect of the material. A suitable spiral angle design can ensure that the material can be fully mixed and plasticized inside the screw, while also being smoothly and efficiently transported forward.
Secondly, the number, cross-sectional shape, and layout of the blades need to be carefully calculated. The number and cross-sectional shape of the blades can affect the shear force and conveying capacity of the screw, while the layout of the blades determines the flow path and mixing effect of the material inside the screw. Reasonable blade design can optimize the transportation and mixing process of materials, improve extrusion efficiency and product quality.
In addition, the gap between the spiral ribs and the cylinder is also an important factor to consider during design. Appropriate clearance can reduce material leakage between the screw and the cylinder, and improve the stability of the extrusion process. However, a large gap may also cause the material to form a reflux inside the screw, affecting the extrusion effect.
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