The invention relates to an automobile front wall inner side sound insulation pad with a multi-layer structure and a manufacturing method of the automobile front wall inner side sound insulation pad. The sound insulation pad is of a multi-layer structure, the upper surface layer is a heavy layer formed through injection molding, and the bottom layer is a sound absorption material layer. The heavy layer is formed by splicing material layers with two densities, and the material layers comprise the material layer with the large density and the material layer with the small density; the high-density material layers are arranged in the middle and close to an engine and wheel cover areas on the left side and the right side. The material layer with low density is arranged in a pedal area close to a passenger side; the density of the material layer with large density is 6-10 kg/m < 2 >, and the density of the material layer with small density is 2-6 kg/m < 2 >. Compared with the prior art, according to different configurations of engines, parts with low density correspond to low configurations, parts with high density correspond to high configurations, and heavy layers with different densities can use a pair of manufacturing dies, so that the cost is saved.

    本发明涉及一种多层结构的汽车用前围内侧隔音垫及其制造方法。所述隔音垫为多层结构,上表面层为注塑成型的重层,底层为吸音材料层。所述重层由两种密度的材料层拼接而成,包括密度大的材料层和密度小的材料层;所述密度大的材料层设置在中间靠近发动机以及左右两侧轮罩区域;所述密度小的材料层设置在靠近乘客侧脚踏区域;所述密度大的材料层密度为6‑10kg/m2,所述密度小的材料层密度为2‑6kg/m2。与现有技术相比,本发明可根据发动机配置不同,密度低的部位对应低配,密度高的部位对应高配,且不同密度的重层可使用一副制造模具,节约成本。


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    Title :

    Automobile front wall inner side sound insulation pad with multi-layer structure and manufacturing method of automobile front wall inner side sound insulation pad


    Additional title:

    一种多层结构的汽车用前围内侧隔音垫及其制造方法


    Contributors:
    JIN JUN (author) / CHEN RUQING (author) / FAN JIE (author)

    Publication date :

    2024-03-22


    Type of media :

    Patent


    Type of material :

    Electronic Resource


    Language :

    Chinese


    Classification :

    IPC:    B60R Fahrzeuge, Fahrzeugausstattung oder Fahrzeugteile, soweit nicht anderweitig vorgesehen , VEHICLES, VEHICLE FITTINGS, OR VEHICLE PARTS, NOT OTHERWISE PROVIDED FOR / B29D PRODUCING PARTICULAR ARTICLES FROM PLASTICS OR FROM SUBSTANCES IN A PLASTIC STATE , Herstellen besonderer Gegenstände aus Kunststoff oder aus Stoffen in plastischem Zustand / B32B LAYERED PRODUCTS, i.e. PRODUCTS BUILT-UP OF STRATA OF FLAT OR NON-FLAT, e.g. CELLULAR OR HONEYCOMB, FORM , Schichtkörper, d.h. aus Ebenen oder gewölbten Schichten, z.B. mit zell- oder wabenförmiger Form, aufgebaute Erzeugnisse




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