What are the functions of each part of the injection molding machine?

(1) The function of the injection system: The injection system is one of the main components of injection molding machines, and generally has three main methods: plunger type, screw type, and screw pre molded plunger injection. The screw type is now widely used. Its function is to heat and plasticize a certain amount of plastic within a regular time in a cycle of the injection molding machine, and inject the molten plastic into the mold cavity through a screw under a certain pressure and speed. After the injection is completed, adhere to shaping the molten material injected into the mold cavity. Composition of injection system: The injection system consists of plasticizing equipment and power transmission equipment. The plasticizing equipment of screw injection molding machine mainly consists of feeding equipment, material barrel, screw, and nozzle parts. The power transmission equipment includes an injection cylinder, an injection seat moving cylinder, and a screw driving device (glue motor).
(2) The function of the clamping system is to ensure that the mold is closed, open, and ejected from the product. At the same time, after the mold is closed, the locking force that the mold meets is provided to resist the pressure generated by the molten plastic entering the mold cavity, avoiding the mold opening and causing the defective status of the product. Composition of the mold closing system: The mold closing system mainly consists of mold closing equipment, mold adjustment arrangement, ejection arrangement, front and rear fixed templates, mobile templates, mold closing oil cylinder, and safety protection arrangement. (3) The function of the hydraulic transmission system of the hydraulic system is to supply power to the injection molding machine according to various actions required by the process, and to meet the requirements of pressure, speed, temperature, etc. required for each part of the injection molding machine. It is mainly composed of various hydraulic components and hydraulic auxiliary components, among which the oil pump and motor are the power sources of the injection molding machine. Various valves control the oil pressure and flow rate, and then meet the requirements of the injection molding process.
(4) The electrical control system cooperates reasonably with the hydraulic system to meet the process requirements (pressure, temperature, speed, time) and various program actions of the needle machine. Mainly composed of electrical appliances, electronic components, surfaces, heaters, sensors, etc. There are generally four control methods, manual, semi-automatic, fully automatic, and adjustment.
(5) Heating/Cooling System Correction: This section of the heating system is used to heat the material barrel and injection nozzle. The injection molding machine material barrel generally uses an electric heating coil as the heating equipment, which is installed outside the material barrel and detected by thermocouples in sections. Heat is transferred through the cylinder wall to provide a heat source for material plasticization; The cooling system is mainly used to cool the oil temperature. Excessive oil temperature can cause various problems, so it is necessary to control the oil temperature. The other direction that needs to be cooled is near the discharge port of the material pipe, to prevent the material from melting at the discharge port, which may cause the material to not be discharged normally.