The structure of low pressure casting machine

As a key equipment for the production of metal castings such as aluminum alloys, low-pressure casting machines have complex and precise structures. The following is an introduction to the structure of the Low Pressure Casting Machine:

　　1. Host part

 

　　The main machine is the core of the low-pressure Casting Machine, which mainly includes the mold clamping mechanism, ejection mechanism, frame, safety limit and material retrieval mechanism, etc. The mold clamping mechanism is responsible for closing and opening the mold to ensure the accuracy of casting molding; the ejection mechanism is used to eject the casting after molding to facilitate the removal of parts; the frame serves as a support structure to ensure the stability and safety of the entire machine. The safety limit device is used to prevent the machine from being in danger under abnormal circumstances; the picking mechanism realizes the automatic picking and placing of castings.

　　2. Hydraulic system

 

　　The hydraulic system is an important part of the low-pressure casting machine and is responsible for providing power to the machine. The system usually consists of a hydraulic pump, a cylinder, a fuel tank, a pipeline, a hydraulic valve, etc., and realizes the action control of each actuator through the circulating flow of hydraulic oil. The stability of the hydraulic system directly affects the operating efficiency of the low-pressure casting machine and the quality of the castings.

 

　　3. Insulation furnace and moving mechanism

 

　　The holding furnace is used to store and heat molten metal to maintain its pouring temperature. Holding furnaces usually use radiant heating, which has the advantages of high temperature control accuracy and uniform heating. The moving mechanism is used to lift and move the holding furnace forward and backward to facilitate docking and pouring operations with the mold.

 

 

　　4. Automatic filling control system

 

　　The automatic mold filling control system is one of the key control systems of the low-pressure casting machine and is responsible for controlling the mold filling process of molten metal. The system usually uses advanced digital pressure control technology to realize the detection and closed-loop PID adjustment of the metal liquid pressure in the holding furnace through high-precision pressure sensors and digital valve islands and other components. At the same time, the system also has an ultra-high pressure automatic pressure relief function and an interlocking safety protection function between the residual pressure in the furnace and the mold opening action to ensure the safety and stability of the filling process.

 

　　5. Electrical control system

 

　　The electrical control system is the "brain" of the low-pressure casting machine and is responsible for the control of the entire machine's sequential movements, liquid level pressurization, and mold cooling. This system usually uses PLC as the control core, and uses a touch screen for human-machine dialogue and parameter setting. At the same time, the electrical control system also has short circuit, overload and other protection measures and a complete action interlock function to ensure the safe and reliable operation of the machine.

 

6. Mold cooling system

 

　　The mold cooling system is used to control the temperature of the mold to ensure the quality and production efficiency of castings. The system can be set up with a variety of cooling circuits, such as air cooling, water cooling, and water-gas mixed cooling, and can be flexibly adjusted according to production needs. At the same time, the mold cooling system also has the function of online setting and modifying cooling parameters, which is convenient for users to adjust according to actual conditions.

 

    Dongguan Shengshi Weiye Machinery Technology Co., Ltd. specializes in the production of Gravity Casting Machine,Low Pressure Casting Machine,Liquid Die Forging Machine and other machines. Friends in need are welcome to pay attention and learn more.