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Hot Runner Wire Harness Plastic Injection Mold Parts
Hot runner wire harness plastic injection mold parts are advanced tooling components featuring integrated manifold systems for producing high-quality cable management components including connector housings, terminal retainers, and cable clips. The hot runner technology eliminates runner waste, reduces cycle time, and enables precise gate vestige control for visible surface applications. These mold parts feature individual nozzle temperature control (±1°C), valve gate sequencing, and pressure-balanced manifold distribution to achieve consistent fill across multi-cavity configurations. Each component is manufactured using premium tool steels with advanced PVD coatings, featuring optimized thermal management systems and precision-aligned guide systems to ensure consistent part quality and extended service life across millions of production cycles.
Core advantages
- Valve gate hot runner with individual nozzle temperature control (±1°C)
- Pressure-balanced manifold design for uniform cavity fill
- Runnerless technology eliminates material waste and regrind costs
- Precise gate vestige control (≤0.3 mm) for visible surfaces
- Reduced cycle time through optimized thermal management
- PVD coating (TiAlN, CrN) on valve pins and sliding surfaces
- Multi-cavity configurations (4+4 to 16+16)
Product characteristics
| Mold base standard | DME / HASCO / FUTABA |
| Hot runner type | Valve gate / open gate |
| Tool steel grades | Stavax ESR, H13, P20 |
| Surface finish | SPI A1, VDI 3400, textured |
| Cavity tolerance | ±0.005 mm |
| Nozzle temperature control | ±1°C per zone |
| Gate vestige | ≤0.3 mm |
| Mold life | 1M – 2.5M shots |
Application scenarios
- Visible surface connector housings
- High-gloss terminal retainers
- Sealed connector systems
- Cable clips and routing guides
- Junction boxes and fuse enclosures
- Sensor housings and mounting flanges
- Electronic module housings
Processing considerations
- Mold temperature: 80–120°C for PA; 60–100°C for PBT
- Nozzle temperature: 260–300°C for PA; 230–260°C for PBT
- Injection profile: decoupled filling with 95–98% first-stage fill
- Pack pressure: 40–60% of injection pressure, hold time 3–6 sec
- Venting depth: 0.002–0.005 mm for precision surfaces
- Shrinkage allowance: 0.5–1.2% for PA
- Gate vestige: ≤0.3 mm height on visible surfaces
