The application of the Screw barrel of injection mouldi […]
The application of the Screw barrel of injection moulding machine is more divided into: integral degree, segmented type, bushing type, casting type, bimetallic layer barrel.
Integral barrel: Most injection molding machines and extruders are monolithic barrels, especially small and medium models,
basically adopt this structure. The barrel is generally used for 38CrMoALA. Moreover, the temperature control is accurate and easy,and the processing accuracy is relatively easy to guarantee.
Segmented barrel: mainly used in larger-sized extruders and exhaust-type extruders. Because the total length of the barrel is divided into several sections, it is much more convenient to process each section of the barrel. The temperature control of heating and cooling has a relatively large error.
Rubber screw barrel classification
The barrel is generally designed as an integral type, and now a multi-section combined barrel is rarely used.
In the theory of solids delivery, the problem of how to increase the solids conveying capacity has been discussed, mainly from the rational selection of the structural and technical parameters of the screw, but the increase in solids conveying capacity is not significant, and the efficiency is only 20% -40% .