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Injection Mould for Rear Retaining Plate - Quality China Suppliers & Factory for Durable Plastic Parts
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Injection Mould for Rear Retaining Plate - Quality China Suppliers & Factory for Durable Plastic Parts

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Our high-quality molds, essential in the molding process, are secured by robust movable and fixed mold plates. Each mold is equipped with advanced features such as ejector pins, return pins, and various demolding mechanisms to efficiently eject plastic parts. For large tailgate molds, we often utilize a three-plate structure along with strategically placed point gates (with taper angles ranging from 12° to 30°) to optimize filling efficiency. Inclined guide pins are also incorporated to facilitate lateral core pulling. Our reliable factory in China specializes in mainstream materials like PP, ABS, and PC/ABS, ensuring an ideal balance of strength and weather resistance. For instance, motorcycle fender molds are typically designed with a PP+TD20 blend to significantly enhance rigidity. Partner with us, your trusted suppliers, for all your molding needs.

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    Product Details

    Product Features
    1 Material Advantages

    ◎ The P20 steel cavity is pre-hardened to a hardness of 30–36HRC, allowing for direct machining and corrosion resistance; the 45# steel mold base is heat-treated to achieve a tensile strength exceeding 600MPa.

    2 High-Efficiency Molding

    ◎ The hot runner system is temperature controlled to reduce melt shrinkage and deformation, and combined with the side gate, it achieves uniform filling of multiple cavities.

    3 Precise Cooling

    ◎ The water-cooling channel design ensures temperature control accuracy of ±0.5℃, preventing product warping.

    4 Reliable Demolding

    ◎ The pin-type ejector and ejector plate work together to meet the demolding needs of complex structures.

    5 Dual-Groove Adaptation

    ◎ The right and left teeth are designed independently, compatible with bidirectional threaded products, expanding application scenarios.

    Applicable Scenarios
    Automotive parts
    Automotive Parts

    Plastic parts that require high surface finish and dimensional stability, such as tailgates and interior trim.

    Industrial parts
    Industrial Parts

    Fasteners and connectors with symmetrical threads, such as flanges and brackets.

    Daily necessities
    Daily Necessities

    Large containers, shells, and other mass-produced products that require rapid cooling and molding.

    Electronic components
    Electronic Components

    Precision structural parts, using a water-cooling system to ensure low thermal deformation.

    General injection molding
    General Injection Molding

    Suitable for medium to high-volume production of engineering plastics such as PP, ABS, and PA.

    Technical Parameters
    Cavity Material P20 steel
    Core Material P20 steel
    Mould Base Material 45#
    Ejection System Pin ejector and ejection plate
    Number of Cavity 2 cavities (right + left)
    Gate Hot runner system + Normal side gate
    Cooling System By water
    Conclusion
    Contact us now for a quote and experience the difference of working with the best in the business.
    Frequently Asked Questions
    Q What material is used for the cavity and core of this mold?
    Both the cavity and core are made of P20 steel, which is pre-hardened to 30–36HRC. This allows for direct CNC machining without additional heat treatment, while also providing good corrosion resistance and a long service life.
    Q How does the hot runner system improve molding efficiency?
    The hot runner system maintains precise melt temperature control throughout the runner, which reduces material shrinkage and deformation. Combined with the side gate design, it enables uniform cavity filling across multiple cavities simultaneously, improving production efficiency and part consistency.
    Q What is the cooling accuracy of this mold's water-cooling system?
    The optimized water-cooling channel layout achieves a temperature control accuracy of ±0.5℃. This level of precision effectively prevents product warping or deformation caused by uneven cooling, ensuring dimensional stability of the finished parts.
    Q What types of products is this mold suitable for?
    This mold is widely applicable across multiple industries, including automotive parts (e.g., tailgates, interior trim), industrial fasteners and connectors, daily consumer goods such as containers and housings, electronic component enclosures, and general injection molding of engineering plastics including PP, ABS, and PA.
    Q Can this mold handle bidirectional threaded products?
    Yes. The mold features an independently designed dual-groove structure with separate left-hand and right-hand tooth profiles. This makes it fully compatible with bidirectional threaded products, significantly expanding its range of applicable scenarios.
    Q What ejection system does this mold use, and is it suitable for complex structures?
    This mold uses a combined ejection system consisting of both pin-type ejectors and an ejector plate. This dual-mechanism approach distributes ejection force evenly across the part, making it well-suited for demolding complex geometries and reducing the risk of part damage during ejection.