The invention discloses a sound insulation pad manufacturing method and a sound insulation pad. The manufacturing method of the sound insulation pad comprises: according to noise distribution information and vehicle model design information, simulating and acquiring simulation data corresponding to thickness or surface density data of a thick and heavy layer corresponding to each partition of thesound insulation pad, and carrying out mold designing by referring to the simulation data; mixing an ethylene-vinyl acetate copolymer, a polyolefin elastomer, a mineral filler and an auxiliary agent,putting a mixture into an internal mixer for internal mixing, controlling a temperature and a speed of a screw rod, putting a material obtained after internal mixing into an extruder, and performing extrusion granulation to obtain injection molding particles; preheating an injection molding machine, putting the prepared injection molding particles into a charging barrel of the injection molding machine, and performing pressurized injection molding according to a designed mold to obtain the thick and heavy layer of the sound insulation pad; and compounding a PU foaming layer or a cotton felt ona back surface of the thick and heavy layer of the sound insulation pad to manufacture the sound insulation pad. In the invention, a thickness area and an actual thickness of the layer can be accurately controlled, and universality of a product design is realized.
本发明公开了一种隔音垫的制造方法及隔音垫,该隔音垫采用如下制造方法制造:根据噪声分布信息和车型设计信息,仿真获得隔音垫各个分区对应的厚重层的厚度或面密度数据对应的仿真数据,参照仿真数据进行模具设计;将乙烯‑乙酸乙烯共聚物、聚烯烃弹性体、矿物填料、助剂混合后置于密炼机中密炼,并控制螺杆温度和速度,将密炼后得到的材料置于挤出机中,挤出造粒,获得注塑粒子;将注塑机预热,在所述注塑机的料筒中放入制备好的所述注塑粒子,根据设计后的模具加压注塑得到隔音垫厚重层;在所述隔音垫厚重层背面复合PU发泡层或棉毡,制造获得隔音垫。通过本发明实现了精准控制层薄厚区域及实际厚度,和产品设计的通用性。
Sound insulation pad manufacturing method and sound insulation pad
一种隔音垫的制造方法及隔音垫
2020-10-13
Patent
Electronic Resource
Chinese
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 / C08K Verwendung von anorganischen oder nichtmakromolekularen organischen Stoffen als Zusatzstoffe , USE OF INORGANIC OR NON-MACROMOLECULAR ORGANIC SUBSTANCES AS COMPOUNDING INGREDIENTS / C08L COMPOSITIONS OF MACROMOLECULAR COMPOUNDS , Massen auf Basis makromolekularer Verbindungen |
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