The main types of injection molds commonly used in plastic manufacturing are as follows:
- Classified by gating system: Cold runner molds (traditional and cost-effective), hot runner molds (reduce waste material and improve efficiency).
- Classified by parting line/plate count: Two-plate molds (most common, simple structure), three-plate molds (automatic gate separation).
- Classified by number of cavities: Single-cavity molds (suitable for small batches or prototypes), multi-cavity molds (high-volume production, high efficiency), family molds (produce multiple different parts simultaneously).
- Classified by special structures: Slider/side core molds (for handling undercuts), unscrewing molds (for threaded parts), two-shot/multi-shot molds, stack molds, etc.
- Classified by material/process: Thermoplastic injection molds, thermoset injection molds.
The choice of mold type should comprehensively consider product structure, production volume, cost, and precision requirements.
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