Method for manufacturing plastic manifold of miniature vehicle engine air intake system

Abstract

The invention relates to a method for manufacturing a plastic manifold of a miniature vehicle engine air intake system. The method comprises an injection molding process and a friction welding process, wherein in the injection molding process, an upper half part and a lower half part of an air intake manifold are manufactured by a forming mold; and in the friction welding process, the upper half part and the lower half part are welded to form a whole body by a friction welding manner. According to the forming mold adopted in the method, multiple slide blocks can be driven by a cylinder, the mold structure is simplified, and the manufacture cost can be reduced. Meanwhile, the upper and lower parts of the product can be simultaneously produced by a set of mold, and thus the production efficiency is greatly improved. Due to the use of engineering plastic nylon PA6+GF30%, the product precision, dimensional stability and the like can be greatly improved; and the product is complicated, the plastic air inlet manifold manufactured with split design has a smooth inner wall and can guarantee smooth air intake, so that fuel can be fully burned, waste gas produced can be reduced, and emission of harmful waste gases is reduced.

Description

technical field [0001] The invention relates to a preparation method of an intake manifold, in particular to a preparation method of a plastic manifold for an engine intake system of a miniature vehicle. Background technique [0002] The intake manifold is a hollow product with a complex shape. It is one of the most important components in the intake system of an automobile engine. It determines the intake efficiency of the engine and the uniformity of the air in each cylinder, and has a great influence on the power and economy of the engine. Impact. The traditional intake manifold is mainly cast from iron or aluminum alloy, which has obvious disadvantages such as rough surface, high inflation resistance, and heavy weight. In order to meet the requirements of reducing weight, reducing fuel consumption, improving automobile engine performance and reducing emissions, plastic intake manifolds have emerged as the times require. Our country introduced the plastic intake manifol...

AI Technical Summary

Problems solved by technology

However, the slider action of the existing forming mold is that one slider is directly driven by a corresponding oil cylinder, so that a set of molds needs to be equipped with multiple oil cylinders, which will make the structure complicated, and the mold with multiple sets of sliders Bigger, more expensive

[0006] 2. The existing molds are all part of a set of mold forming products, that is, a set of molds produces a part. If the product is divided into several parts, several sets of molds are required correspondingly. The production benefit is poor, the efficiency is low, and the resources are occupied. , unable to realize the supporting production of products

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