Core Technology Improvement of Cable Extrusion Equipment

The core technology of cable extrusion equipment is continuously improving, providing a strong guarantee for the improvement of wire and cable production quality and efficiency.

Screw design is one of the key improvement points. The new screw adopts an optimized geometric shape, such as a barrier screw. The principle is to divide the material into a melting zone and a solid conveying zone by setting a barrier section. In the melting zone, plastic particles quickly melt under high temperature and the shearing action of the screw. In the solid conveying zone, unmelted materials are stably conveyed forward, effectively improving the plasticizing effect and extrusion stability. Temperature control technology has also made significant progress. Advanced PID (proportional-integral-derivative) control algorithm combined with high-precision temperature sensors can accurately control the temperature of each section of the barrel. For example, some temperature control equipment manufacturers in Germany can maintain the temperature control accuracy within ±0.5℃. Precise temperature control ensures the uniform melting of plastic raw materials and reduces product defects caused by temperature fluctuations. In terms of extrusion speed, high-speed extrusion is achieved by optimizing the drive system and screw structure. Some new extrusion equipment adopts variable frequency speed regulation motors and high-efficiency transmission devices. Combined with specially designed screw grooves, the extrusion speed is increased by more than 30%. At the same time, high-speed extrusion also needs to solve the cooling problem. The advanced cooling system adopts a combination of spray cooling and vacuum sizing, which can quickly cool the cable and maintain its precise shape and size. In actual production, the cable products produced by extrusion equipment with improved core technology have significantly improved indicators such as surface smoothness and dimensional accuracy, meeting the needs of the high-end wire and cable market.