Screws and solenoid valves for injection moulding

On full voltage machines, all movements are performed by brushless synchronous motors equipped with permanent magnets. Rotary motion is converted into linear motion through ball bearing screws that have been used in the machine tool industry. The effect of the entire process depends in part on the plasticization process, where the screw plays a crucial role. Mitsubishi's newly introduced solutions in the production of all-electric models include a feed screw screw threading roller and a screw tip with a mixing element. In this way, the plasticizing ability and kneading effect can be maximized, the length of the screw can be shortened, and high-speed operation can be realized.
The screw must ensure that the material melts and homogenizes. This process can be adjusted with back pressure to avoid overheating. Mixing elements cannot produce excessive flow rates, which can lead to polymer degradation. Each polymer has a different maximum flow rate. If it exceeds this limit, the molecules will stretch and the polymer backbone breaks. However, the focus remains on controlling the forward axial movement of the screw during injection and holding pressure.
Subsequent cooling processes, including internal stresses, tolerances, and warpage, are important to ensure product quality. This is all a matter of the quality of the whole mountain mold, especially when optimizing cooling channels and ensuring effective closed-loop temperature regulation. The system is completely independent and does not interfere with mechanical adjustments. Mold movement such as closing and ejecting must be precise and efficient. Velocity profiles are often used to ensure that moving parts are accurately approached. Contact maintenance can be adjusted. Therefore, it can be concluded that under the premise of not considering the energy consumption and mechanical reliability and the same additional conditions (such as the quality of the mold), the product quality is mainly determined by the system that controls the forward movement phase of the screw. In hydraulic injection molding machines, this adjustment is achieved by detecting helium pressure. Specifically, the oil pressure activates a set of valves through the control board, and the fluid passes through the manipulator and acts and is adjusted and released.