The production principle of pvc pipe fittings injection molding machine

In order to ensure that the production of PVC pipe fittings, there is no problem in the quality, but also to move forward in the production power, it is stipulated that the extruder must be properly applied. Because of the characteristics of the conical screw, the feeding section has a large diameter, the total area of heat transfer to the raw material and cutting speed is relatively large, beneficial to the plasticization of PVC pipe fittings, metering section of the screw diameter is small, reduces the total area of heat transfer and cutting speed of the melt, so that the melt can be extruded at a lower temperature. When the screw rotates in the barrel, the mixture of PVC pipe fittings will be plasticized and then edged to the head, and then arrive at the tamping, melting, mixing and homogenization; and complete the purposefulness of exhausting and dewatering. The feeding equipment and screw pushing equipment adopts frequency conversion, which can realize the same speed change. The extrusion die head part is the PVC pipe fittings molding of the key building blocks, which will be compacted, melting and mixing of PVC homogenization, there are raw materials after the fact through the screw toward the die head, to carry out product shaping and quality management.