The basic process involved in the production of an air-cooled disc injection molding machine typically begins with the introduction of plastic granules or powder into the barrel. Once inside, the extruder screw rotates the material and heats the barrel walls to transform the plastic into a molten state. This melting process is critical to achieving the desired level of plasticity required for injection molding.
Afterwards, the equipment proceeds to clamp and displace the injection seat in order to bring the nozzle closer to the adhesive inlet of the abrasive tool. Subsequently, pressure oil is injected into the injection cylinder, pushing the extruder screw forward at a high pressure and rapid speed. This allows the introduction of the wear-resistant material into the closed mold at a lower temperature. Following a period of time and pressure maintenance, also referred to as solidification, the material is then cooled and solidified, enabling the product to be removed from the mold. The purpose of solidification is to prevent the reflux of the medium wear-resistant material in the mold cavity, ensuring proper filling of the raw material and guaranteeing a certain relative density and standard tolerance in the final product.
The fundamental requirements for injection molding include melting, injection, and molding. Melting is a crucial step for completing and ensuring the quality of the formed products. Injection, on the other hand, must provide sufficient pressure and speed to meet the requirements of the molding process. Moreover, due to the extremely high injection pressure, the cavity experiences considerable pressure (generally between 20 and 45 MPa), necessitating an ample amount of clamping force. It is evident that the injection equipment and mold equipment are the central components of the disc injection molding machine.