Car spare tire cover plate manufacturing method

Abstract

The invention discloses a car spare tire cover plate manufacturing method which comprises the following steps: delivering PP (polypropylene) engineering plastic particles into a charging barrel above a blow molding machine; heating and delivering the plastic particles to an extrusion die head by virtue of an extrusion screw rod; fixing a punched non-woven fabric on the fixed die cavity plate of a blow molding die; extruding molten plastic from the die head through the extrusion die head, thus forming a primary blank; sealing the lower end of the primary blank through a sealing device, starting the die head for blowing, thus forming the blank with needed dimension through blowing expansion, and starting die assembly; when the die assembly is in place, starting an oil cylinder on a supporting plate instantaneously so as to push a reinforcing rib forming push plate on a fixing plate to extrude the blank, delaying for 1-2 seconds, retreating the oil cylinder, and simultaneously starting a blowing needle for blowing; carrying out blowing forming and cooling; and carrying out die sinking when preset forming and cooling time is achieved, and taking out the finished product. The spare tire cover plate manufactured by the method is light in mass, good in sound-insulating effect, large in bearing force and good in attaching effect of the body and the fabric.

Description

technical field [0001] The invention relates to a method for manufacturing an automobile spare tire cover. Background technique [0002] According to the spare tire placement and space layout design requirements of existing passenger cars and urban SUVs, a spare tire compartment is generally designed in the luggage compartment of the car, and the spare tire and other tool boxes are placed in the spare tire compartment. The cover is configured to cover and isolate the function of the spare tire compartment while achieving a flat and consistent layout of the luggage compartment. In view of the isolation of the spare tire compartment and the load requirements for the storage of items in the luggage compartment, the automobile spare tire cover plays the roles of body decoration, sound insulation and noise reduction, and load bearing. In the existing automobile industry, the automobile spare tire cover plate is generally made of materials and production processes such as hard fi...

AI Technical Summary

Problems solved by technology

The above-mentioned automobile spare tire cover has the following disadvantages: heavy weight, poor appearance, poor sound insulation and noise reduction effect, and limited carrying capacity. Poor environmental protection

Under the technical conditions of the existing technology, for the spare tire cover plate of plastic molding composite fabric, the fabric is difficult to stretch and fit on the body molding surface, and the surface curvature reproducibility is poor. Products of this kind of plastic molding composite fabric can be directly molded into conventional fabrics Compounding, it is easy to cause plastic breakdown spots on the surface of the fabric

Therefore, the plastic body is formed first, then the fabric is formed, and the formed fabric and the plastic body are glued and compounded after spraying glue on the surface of the plastic body. The process is cumbersome, the efficiency is low, and the product is not beautiful.

In addition, the above-mentioned car spare tire cover body and the fabric are not tightly pasted, and the effect is poor.

[0003] To sum up, when the product is molded by the above process, the process is cumbersome and the efficiency is low, and the prepared spare tire cover is heavy in weight, poor in appearance, poor in sound insulation and noise reduction, and limited in carrying capacity

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