The structure of the aluminum alloy die-casting machine includes the clamping mechanism, the injection mechanism, the ejection mechanism, the power, the transmission system and the control system. Each mechanism is indispensable. Today, let’s talk about the injection mechanism.

The injection mechanism of the aluminum alloy die-casting machine is a mechanism that pushes the molten metal into the mold cavity, fills and forms it into a die-casting. Different types of aluminum alloy die-casting machines have different injection mechanisms, but the main components include the injection chamber, injection punch, injection rod, injection cylinder and supercharger. Its structural characteristics determine the main parameters such as injection speed, injection pressure ratio, injection time, etc. in the die-casting process. These main parameters directly affect the filling form of the molten metal and the movement characteristics in the cavity, and thus also affect the quality of the die-casting.

A die-casting machine with an excellent injection mechanism is a reliable guarantee for obtaining high-quality die-castings. The general trend of the development of the injection system is to obtain fast injection speed, high pressure at the end of die casting, and low pressure peak. The main feature of the injection mechanism of a modern die-casting machine is three-stage injection, that is, two-stage speeds of low-speed exhaust of gas in the pressure chamber and high-speed filling of the cavity, and one-stage pressurization that continuously applies stable high pressure to the molten metal.

The injection mechanism in aluminum alloy die casting is particularly important in the whole process. It is the key to connect the before and after injection. After filling and molding, the ejection mechanism is used to push the molded die casting and runner condensate out of the mold. The force, speed and time of the ejection are all adjustable.