Touring car compartment rotational moulding manufacturing process

Abstract

The invention provides a touring car compartment rotational moulding manufacturing process, and relates to the technical field of rotational moulding processes. The process comprises the following steps of S1, mounting, S2, preheating, wherein an inner film of a mold is heated; S3, primary putting, wherein PE materials are injected into the mold; S4, heating and melting, wherein through heating and longitudinal and transverse rolling rotating of the mold, the materials can be evenly distributed in an inner cavity of the mold and molten; S5, secondary putting, wherein the mold is opened, and the middle of a rotational moulding part is filled with a filling agent with a heat preservation and sound insulation function; S6, forming; and S7, cooling and demolding. Through the rotational moulding manner, a compartment is made, the mold cost is greatly reduced, the rotational moulding process is suitable for forming large plastic products, through adding of the filling agent with the heat preservation and sound insulation function, the whole compartment has the good heat preservation and sound insulation function on the premise of high strength, the whole process achieves rotational moulding process one-time molding, the car shell forming period can be shortened, and the strength, rigidity and heat insulation properties of the whole compartment can be improved.

Description

technical field [0001] The invention relates to the technical field of rotational molding technology, in particular to a manufacturing technology of rotational molding of a caravan compartment. Background technique [0002] At present, the domestic automobile manufacturing industry mostly uses sheet metal stamping to form various car shell covers, and uses injection molding to form front and rear bumpers and car doors. Due to the high cost of cold stamping dies and injection molding, the long manufacturing period and high cost of technological improvement restrict the development of automobiles. Industrial development. Furthermore, due to the heavy weight of the sheet metal car shell, the energy consumption is high, which is unfavorable for environmental protection. However, it is difficult to pull the core of the injection mold, so the rotomolded car shell has become the best choice. [0003] However, most of the rotomolding and blow molding car shells developed at home a...

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Problems solved by technology

[0003] At present, most of the rotomolding and blow molding car shells developed at home and abroad are single-layer or double-layer structures, and the body of the double-layer structure still has the disadvantages of strength, rigidity, poor sound insulation and heat insulation performance, and heavy weight.

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