Bi-material plastic injection mold

hot-runnermulti-cavitytechnical parts

Custom Plastic Injection Mold for Automotive Lighting Cover Mold Cavity: 1+1 Cav Mold Steel: NAK80 Mold Standard: HASCO Gate: Hot Runner Mold Life: 500,000 shots Part Material: PC Plastic Auto Lighting Shell Injection Mold Design In the mold design process, we optimized the gating system through mold flow analysis, adopting a 2-point open hot runner system for direct injection, which ensures an efficient plastic injection process. In terms of mold design, special attention was given to the hot nozzle area and its corresponding moving mold area, where we meticulously designed cooling channels to enhance the cooling effect of the hot nozzle area, preventing issues such as stringing, drawing, and excessive gate residue. For the slider design, we prioritized a mechanical drive structure for its stability, reliability, and cost-effectiveness. In response to the high dimensional accuracy requirements of the automotive front lamp housing, we designed an accurate mold temperature control system. By using a combination of "vertical water pipes + segmented water wells" , we ensured uniform and rapid cooling, significantly improving production efficiency and successfully controlling the injection cycle to around 40 seconds. For large automotive injection moulds, the design of the exhaust system is crucial. An improperly designed exhaust structure can severely affect the quality of the plastic parts, leading to defects such as incomplete filling, trapping of air, and difficult ejection, as well as burn marks. Therefore, for internal functional parts like the automotive front lamp housing, we place special emphasis on the rational design of the exhaust system.