During the injection molding process, the nut is used to tighten a straight line and step backward to complete the injection molding. The rod cavity of the injection molding cylinder is fed with oil through the push rod of the bearing to complete the action, and the rod cavity push rod and the screw are used to complete the injection molding action during the injection molding process.

Plastic parts of the plasticized parts have two kinds of plunger type and screw type, large injection molding machine how much is the following to do a screw type introduction. As shown in Figure 5, the plasticizer of the screw is mainly composed of a screw, a barrel, a nozzle, etc. During the continuous advancement of the screw, the plastic changes its physical state and is finally injected into the die cavity in a molten state. Therefore, the plasticization part is the core component to achieve uniform plasticization and quantitative injection.

The working principle of spiral plasticized parts: When pre-plastic, the screw rotates, the material falling from the feed mouth to the screw groove is continuously promoted, and the heating ring transfers heat to the material in the screw groove through the wall surface of the cylinder. Under the double action of the solid material in the heat energy and the screw rotation, the number of models of the injection molding machine reaches plasticization and melting through the heat energy process of various functional segments, and the melt pushes the reverse ring. Through the annular channel in front of the screw into the screw, produce back pressure, push the screw back to complete the melt metering, in the injection molding, the screw acts as a plunger, under the action of the cylinder, quickly move forward, the material storage room of the melt into the mold through the nozzle.