PP 2+2+1+1 Mold Cavity Large Gate Submarine Injection 718H Mold Steel Mold Surface Polishing High Precision Wiring Accessories Injection OEM Molding

This kit of engineering plastic components (wall-mount bases + cable protection connectors) is designed for electrical cable routing, insulation protection, and neat wiring (e.g., home electrical outlets, industrial equipment wiring, smart device cable ports). Made from high-insulation, wear-resistant plastic (ABS/PVC), the components feature precision-molded structures for secure installation and reliable cable protection.
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  • 25120

  • YIXUN mold

  • 3926909090

This is a high-efficiency custom 2+2+1+1 multi-cavity injection mold, purpose-built for manufacturing precision PP plastic wiring accessories (inserts, mounting bases, connectors, and related components). Constructed from premium 718H pre-hardened mold steel and featuring a fully polished mold surface, this tooling delivers exceptional dimensional accuracy, consistent surface quality, and long-term production stability for electrical components. Equipped with a large submarine gate system, it ensures hidden, balanced feeding across all cavities, eliminating visible gate marks on finished parts and meeting the strict aesthetic and functional requirements of wiring accessories. Optimized specifically for PP material’s molding characteristics, the mold effectively addresses common challenges like warpage, shrinkage, and surface blemishes, making it an ideal OEM solution for high-volume production of electrical wiring components.


Core Product Specifications

Specification Item Detailed Parameters
Mold Cavity 2+2+1+1 Multi-Cavity Layout (6 parts per cycle), optimized for different wiring accessory components
Applicable Material PP (Polypropylene) plastic, ideal for electrical wiring accessories due to its insulation and durability
Gating System Large Submarine Gate (tunnel gate), hidden feeding, no visible marks on finished parts
Mold Steel Grade 718H Mold Steel, pre-hardened, high toughness, wear resistance and thermal stability
Surface Finish Fully Polished Mold Surface, smooth high-gloss finish for clean, professional wiring accessory parts
Molded Application Custom wiring accessories, electrical connector bases, mounting brackets, and related components
Production Compatibility Standard injection molding machines, supporting high-volume automatic production
Production Feature High efficiency, low defect rate, precise dimensional control, suitable for OEM mass production

Advanced Mold Design & Manufacturing

1. 2+2+1+1 Multi-Cavity Layout

The 2+2+1+1 cavity design is optimized to produce six different or paired wiring accessory components in a single cycle, maximizing production efficiency while ensuring uniform melt flow and cooling conditions across all cavities. This balanced layout eliminates the risk of uneven filling or part warpage, even with multiple different geometries being molded simultaneously.

2. Premium 718H Mold Steel Construction

Built with high-quality 718H pre-hardened mold steel, this tooling offers excellent toughness, thermal stability, and wear resistance. Its uniform hardness ensures the mold maintains its precision and surface quality even after millions of shots, making it ideal for long-term OEM production runs. The steel’s corrosion resistance also protects the mold during the molding process, extending its service life.

3. Large Submarine Gate System

The large submarine gate design is specifically optimized for the various geometries of wiring accessories. Feeding material through hidden channels, it leaves no visible marks on the exterior surface of the parts, ensuring a clean, professional appearance required for electrical components. The large gate size accommodates the melt flow requirements of PP plastic, enabling fast, balanced filling across all cavities and minimizing internal stress to prevent warpage or shrinkage.

4. Fully Polished Mold Surface

Both the cavity and core surfaces are precision-polished to a high gloss, delivering smooth, clean surfaces that meet the aesthetic and hygiene standards of electrical wiring accessories. This finish also improves mold release, reduces surface defects, and enhances the overall quality of the finished parts.

5. Optimized Cooling & Cycle Efficiency

The mold is equipped with strategically placed cooling channels to ensure uniform and rapid cooling across all cavities. This design shortens cycle times, prevents uneven shrinkage or warpage, and maintains tight dimensional tolerances on critical features such as mounting holes and connector interfaces. Combined with the multi-cavity layout, this cooling system maximizes production efficiency without compromising part quality.

High Precision Wiring Accessories Injection OEM Molding


Material Adaptability & Core Advantages

PP plastic is widely used in electrical wiring accessories due to its excellent electrical insulation, chemical resistance, and low cost. This custom mold is purpose-built to leverage these properties:
  • Electrical Safety: The high-quality PP material and precise molding process ensure consistent insulation properties for wiring accessories.

  • Durability: The 718H steel construction and optimized cooling system produce parts with excellent dimensional stability and impact resistance.

  • Cost Efficiency: The multi-cavity design and optimized cycle times reduce per-part costs, making OEM production more economical.

  • Consistent Quality: The polished surface and hidden gate system ensure uniform appearance and performance across all molded parts.


Key Applications

This high-precision multi-cavity injection mold is designed for manufacturing a wide range of PP plastic wiring accessories, including:
  • Electrical connector bases, housings, and terminal blocks

  • Wiring mounting brackets, clips, and retainers

  • Junction box components and electrical enclosures

  • Custom plastic parts for low-voltage electrical systems


Quality Assurance & After-Sales Support

Every injection mold undergoes a rigorous multi-stage quality control process, including:
  • Steel hardness and material verification

  • Dimensional accuracy checks of all critical mold features

  • Surface finish inspection of the polished cavity and core surfaces

  • Mold trial runs to validate cycle time, gate functionality, and part quality

We provide comprehensive after-sales support, including mold maintenance guidance, technical troubleshooting, and modification services, to ensure your production runs smoothly for years to come.
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