The parallelism is similar to that of a conical twin-sc […]
The parallelism is similar to that of a conical twin-screw extruder: there is a transfer mechanism for forced advancement of plastics, good mixing plasticizing ability and dewatering capacity, and basically the same adaptability to the molding process of materials and plastic products.
The two conical screws are horizontally arranged, and the two axes are inserted into the barrel at an angle. The center distance of the two axes gradually increases from the small end to the large end, so that the two output shafts of the transmission gear box have a large center distance. The gears and gear shafts in the transmission system and the radial and thrust bearings supporting these gear shafts have a large installation space, which can accommodate larger radial bearings and thrust bearings, each of which has sufficient transmission torque. The shaft diameter of the distance, so the large working torque and large load capacity are a major feature of the conical twin-screw extruder. This parallel twin-screw extruder is incomparable.
The conical twin-screw extruder has an angle of arrangement between the two screws, so the two output shafts of the transmission gearbox have a large center distance, and two thrust spherical ball bearings are arranged in the gear box. It is enough to prevent the axial force formed by the pressure of the machine head. Its characteristic bearing capacity is large, the gear box manufacturing cost is low, and the maintenance is convenient.
For the user, the purchase of twin-screw extruders is very important. Different types of twin-screw extruders have different performances and applications. Therefore, it is necessary to understand the performance of various twin-screw extruders. Application. For example, intermeshing co-rotating twin-screw extruders are widely used for the modification of non-thermally decomposable polymers due to their high rotational speed, high shear rate, and combined screw – blending, filling, fiber reinforced and The reaction of the material is extruded. Intermeshing counter-rotating twin-screw extruder, because of its good mixing and plasticizing function, its biggest feature is the direct molding of PVC powder. If you change the geometry of the screw, it can also be used for the forming of other materials, but its strength is still PVC forming. According to the size of the plastic section, the amount of extrusion is determined, and the specification of the twin-screw extruder is selected by the amount of extrusion. In the case of substantially the same plastic processing conditions, the conical twin-screw extrusion performance accommodates larger head pressures, and the parallel twin-screw extrusion performance accommodates smaller head pressures.