400T Versatile Cold Chamber Die Casting Machine LED Lamp Heat Sink Diecast

Purpose-built for manufacturing high-power aluminum alloy LED street light housings with integrated heat dissipation fins, this 400T cold chamber die casting machine delivers one-piece precision forming of complex heat sink structures. LED street light housings require excellent thermal conductivity and dense internal structure to ensure long-term stable operation of high-power lamp beads. As a professional cold chamber die casting solution for large-sized aluminum alloy lighting components, it achieves uniform filling of dense fin structures, effectively improving heat dissipation efficiency and service life of outdoor LED street lamps. It is also suitable for producing related large-sized zinc alloy die casting parts with thick-wall structural designs.

The machine adopts a newly reinforced heavy-duty frame structure, equipped with high-strength tie bars, enlarged steel pins and extra-thick machine platens, greatly enhancing overall rigidity and load-bearing capacity to match the 400-ton high clamping force. This robust structural design delivers superior impact resistance and load stability during high-pressure cold chamber die casting, effectively suppressing mold vibration and micro-deformation during large-sized housing forming. For LED street light housing production, this ensures consistent wall thickness and complete filling of thin heat dissipation fins, avoiding fin breakage and uneven heat dissipation performance. The high-stability structure reduces mechanical deformation during long-term continuous production, extends the machine’s service life and fully adapts to heavy-duty batch production of aluminum alloy lighting housings.

Powered by a genuine German PLC core and full-color human-machine interactive screen, the machine enables real-time precise monitoring and adjustable control over injection speed and injection pressure. Advanced closed-loop control technology realizes ultra-fine graded regulation of the entire injection cycle, ensuring smooth and complete filling of intricate fin arrays and internal mounting cavities without cold shuts or porosity defects. This guarantees consistent thermal conductivity of each finished street light housing, meeting the heat dissipation requirements of high-power LED chips. The simplified electrical circuit design maintains stable and reliable operation even in high-temperature workshop environments, and the built-in fault display function quickly identifies electrical system abnormalities to help operators troubleshoot efficiently and minimize production downtime.

The hydraulic system operates on dual-proportional control architecture to realize fully programmable multi-stage injection and low-pressure buffer mold clamping, which protects delicate fin mold cores from impact damage and extends tooling service life. All hydraulic seals are sourced from premium European or Japanese brands to ensure long-term reliable, leak-free operation under high 400-ton clamping pressure. The machine is fitted with a hydraulic die height adjustment system, making mold installation and changeover faster and more convenient to save time and labor for multi-style street light housing production runs. It is also equipped with an automatic pressure relief energy-saving function that effectively reduces system energy consumption during operation and minimizes unnecessary energy loss.

The clamping and die height adjustment mechanism ensures uniform stress distribution and stable mold positioning across the large platen surface, avoiding local deformation and dimensional deviation of large-sized street light housings. The injection unit with high-flow valves and a precision piston accumulator delivers powerful, consistent injection performance that fully fills large-area housing molds and complex fin structures. A high-efficiency oil cooling system maintains stable hydraulic temperature during long-shift continuous production, supporting an overall service life of 15 to 20 years. An optional mold sweeping robotic arm is available for further automation upgrade.