Custom Plastic Injection Mold for Automotive Lighting Multi Cavity Mould
Website:
/plastic-mold-product/automotive-exterior-and-interior-parts
Description:
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. In the mold design, for areas with high clamping force on the plastic parts, we ensured smooth ejection by setting an draft angle of over 5 degrees and a 0.5 mm deep undercut pattern on the moving mold side. This coordination of mechanisms ensures the mold operates safely, stably, and reliably, effectively solving the issue of parts sticking to the fixed mold in lamp housing plastics. After trial production, the mold for this vehicle model demonstrated good fitting and dimensional stability in vehicle assembly and received recognition and positive feedback at the auto show.
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