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Multi Cavity Automotive Interior Plastic Parts Injection Mold
The multi-cavity injection mold for automotive interior plastic parts is engineered for high-volume production of components including trim bezels, switch panels, vent louvers, clip housings, and decorative inserts. This tooling system features balanced runner networks, precision-machined cavity blocks, and synchronized ejection mechanisms to achieve consistent part quality across all cavities. The mold architecture incorporates hot runner systems with flow-balanced manifolds, guided slide systems, and wear-resistant coatings. Steel selection includes P20 and H13 grades with nitriding for extended tool life. Cooling employs conformal circuits with individual cavity monitoring to maintain thermal uniformity. The design includes cavity identification markers for traceability and quality control verification.
Core advantages
- Balanced runner system for uniform cavity fill
- Interchangeable cavity inserts for flexible production
- High-speed ejection with guided pin systems
- Conformal cooling with individual cavity monitoring
- Wear-resistant coating (TiN) on slide surfaces
- Hydraulic core pulling with position sensors
- Reduced per-part cycle time (40% compared to single cavity)
Product characteristics
| Mold base standard | DME / HASCO / FUTABA (customizable) |
| Number of cavities | 4+4, 8+8, 12+12, 16+16 (custom) |
| Injection material compatibility | PC, PC/ABS, ABS, PP, POM, PA6 |
| Clamping force range | 200 – 2000 ton |
| Surface finish | VDI 3400, gloss polish, or textured |
| Ejection system | Guided ejector pins + air poppets + stripper |
| Cooling medium | Water / oil with conformal circuits |
| Mold life (maintenance cycle) | 800k – 2M shots based on material and cavities |
Application scenarios
- Trim bezels and decorative inserts
- Switch panels and control housings
- Vent louvers and register components
- Clip housings and fastening elements
- Lighting bezels and light guide mounts
- Speaker grilles and acoustic panels
- Grommets and sealing components
Processing considerations
- Mold temperature: 50–70°C for PC/ABS; 40–60°C for ABS
- Injection profile: balanced fill with multi-stage injection
- Pack pressure: 50–70% of injection pressure, hold time 3–6 sec
- Venting depth: 0.015–0.020 mm for standard materials
- Shrinkage allowance: 0.4–0.7% for ABS; 0.3–0.5% for PC/ABS
- Gate design: fan or edge gates with balanced runner lengths
- Cooling channel layout: conformal with 8–10 mm diameter
