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Injection mould for Rear retaining plate
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Injection mould for Rear retaining plate

    The mold, as the core of the molding process, must be secured by movable/fixed mold plates and equipped with ejector pins, return pins, and other demolding mechanisms to eject the plastic part. Large tailgate molds often use a three-plate structure, using point gates (taper angles of 12° to 30°) to optimize filling efficiency and using inclined guide pins to achieve lateral core pulling. The mainstream materials are PP, ABS, or PC/ABS, which balance strength and weather resistance. For example, motorcycle fender molds often use PP+TD20 to enhance rigidity.

    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.

    4. Dual-groove adaptation

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

    Applicable Scenarios

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    Automotive parts

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

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    Industrial parts

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

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    Daily necessities

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

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    Electronic components

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

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    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

    2cavities (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.