The screw of the extruder and the screw of the injectio […]
The screw of the extruder and the screw of the injection molding machine are both plastic processing machinery. They sound a little similar, but they are actually different. There are many differences between the plastic extruder screw and the injection molding machine screw. The following will be introduced to us by the professionals of the plastic extruder screw to learn more about the two machines.
1. The extruder extrudes molten plastic through a fixed-shaped extrusion port under the effect of a screw, and cuts it after water cooling and shaping under the effect of a traction machine. It is mainly used for the production of many products of the same cross-section, such as tubes, rods, profiled materials, etc., and can also be used for plastic modification and granulation. Its plastics processing is called extrusion molding process.
2. The injection molding machine injects the molten plastic into the mold, which is the product after cooling. The use is very wide, depending on the plastic, the local application is also different. This process is called the injection molding process.
3. Under the depiction of the image, the injection molding machine melts the plastic particles and then injects them into the closed mold cavity. After overflowing the mold cavity, the operation is suspended first. After cooling, the plastic is shaped into a certain shape, and the mold is opened again after the mold is opened. operation. Such as plastic cups, plastic basins and other plastic products. The extruder melts the plastic particles and extrudes them continuously through the die, such as plastic tubes, plastic plates, etc., and then cuts off the subsequent process. The two machines not only process different materials, but also have different screw structures.
4. The processing data is also different, and the viscosity of the data is different. Injection molding requires that the plastic raw material can flow in the mold, and the flow channel is generally curved and narrow, so the fluidity of the plastic raw material is required to be absolutely good.
