The invention relates to a production method of an automobile felt sound-insulation pad. The method comprises the following steps: laying a PE glue film on a hard felt layer and laying a soft felt layer on the PE glue film so as to obtain a felt sound-insulation pad raw material; putting the felt sound-insulation pad raw material between an upper die and a lower die of a forming machine, and assembling for performing die pressing forming so as to obtain an automobile sound-insulation pad blank; after forming, injecting hot air into a cavity by the lower die so as to perform heating forming on the automobile sound-insulation pad blank, and drawing the hot air out by the upper die, so as to obtain an automobile sound-insulation pad semi-finished product; putting the automobile sound-insulation pad semi-finished product on a cooling jig having a vacuum adsorption function and performing cooling shaping so as to obtain an automobile felt sound-insulation pad semi-finished product; and removing excess materials of the automobile felt sound-insulation pad semi-finished product after cooling shaping, so as to obtain the automobile felt sound-insulation pad finished product. According to the method, hot air blowing assisted with an electrical heating die is adopted for producing the automobile felt sound-insulation pad, the heating efficiency is high, the temperature is stable, the produced automobile felt sound-insulation pad is excellent in sound insulation performance, and the large-scale continuous production is facilitated.
Production method of automobile felt sound-insulation pad
2015-11-04
Patent
Electronic Resource
English
IPC: | 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 / B60R Fahrzeuge, Fahrzeugausstattung oder Fahrzeugteile, soweit nicht anderweitig vorgesehen , VEHICLES, VEHICLE FITTINGS, OR VEHICLE PARTS, NOT OTHERWISE PROVIDED FOR |
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