Truck exterior trimming part made of polyurethane fiber composite material

Abstract

The invention discloses a truck exterior trimming part made of a polyurethane fiber composite material. The exterior trimming part comprises a top cover, a guide plate, a door sheet, a radiator grille, pedals and a bumper which are arranged on the outside surface of a head part of a truck; the top cover, the guide plate, the door sheet, the radiator grille, the pedals and the bumper are all made of the polyurethane fiber composite material; the polyurethane fiber composite material comprises a composite sheet layer and an outer protective layer which is attached to the outer surface of the composite sheet layer; and the composite sheet layer comprises a filling material layer body, a fiber material layer body and a polyurethane material layer body, wherein the fiber material layer body andthe polyurethane material layer body are wrapped around and cover the filling material layer body in sequence from the inside to the outside. According to the technical scheme of the truck exterior trimming part made of the polyurethane fiber composite material, all parts of the truck exterior trimming part are made of the polyurethane fiber composite material through technologies such as layeredmould pressing, meanwhile, the requirements of the development trend of lightweight and high strength of the truck exterior trimming part can be met, the steps of a preparation technology are simplified, and the production cycle is short.

Description

technical field [0001] The invention belongs to the technical field of auto parts, and in particular relates to a polyurethane fiber composite material truck exterior trim. Background technique [0002] A truck, formally known as a truck, is a form of vehicle used to carry goods and merchandise, including dump trucks, tractor trucks, off-road trucks for off-highway and roadless areas, and various vehicles built for special needs, such as: Airport shuttle bus, fire engine and ambulance, oil tank truck, container tractor truck, etc. At present, the lightweight materials widely used in trucks include aluminum alloys, magnesium alloys, high-strength steels, plastics, and FRP composite materials. All major automobile companies have taken the use of these lightweight materials as an important indicator to measure whether they are leading in automobile production technology and new material development. Automobile companies around the world have launched new technologies, new mat...

AI Technical Summary

Problems solved by technology

Among them, the main production process of the front mask body is metal stamping and SMC molding: the material cost of the stamping process is low, the operation in the process is simple, and it is easy to automate production. The disadvantages of mold production cycle are long, and its product weight is heavy, which does not meet the current development direction of automobile lightweight; and SMC compression molding, compared with it, is easy to form complex shapes, the density of composite materials is small, and the weight of products can be appropriately reduced. However, when selecting SMC materials, it is necessary to meet the design strength of the product at the design stage, and avoid affecting the appearance of the appearance due to quality defects such as shrinkage and deformation caused by changes in the thickness of the product material. Many factors need to be considered, which greatly increases the difficulty and cycle of modeling design. , and it may be necessary to repeatedly modify the structure of product reinforcement ribs and wall thickness during the mold debugging stage to meet the product requirements, resulting in an extension of the mold manufacturing cycle

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