Molding process for nonwovens-wound type automobile intake tube

Abstract

The invention relates to a molding process for a nonwovens-wound type automobile intake tube, comprising the following steps of: (1) cutting a nonwovens raw material into strips with the width of 10-50mm; (2) uniformly and obliquely winding the nonwovens strips on a core rod in a running direction towards one side of the core rod, simultaneously and synchronously winding hard nylon yarns with the diameter of 1-5mm on the nonwovens strips, and uniformly brushing gluewater on the nonwovens strips on the side of the hard nylon yarns in the running direction of the nonwovens strips along the core rod; and (3) after winding is completed, baking or naturally airing for molding, and taking down a finished product from the core rod. By the steps of uniformly winding the nonwovens strips and the hard nylon yarns on the core rod at intervals in a small angle as well as bonding and molding, the advantages of simple manufacturing process and short molding period are achieved, and the obtained nonwovens-wound type automatic intake tube has the assembly properties of strength, flexibility, noise reduction, distortion resistance, ageing resistance and the like, can meet rigid requirements on any certain bending for the butt joint of an automobile engine and an air filter under different assembly working conditions, and has the advantages of long service life, recyclability and no waste pollution.

Description

technical field [0001] The invention relates to a forming method of an automobile air intake pipe, in particular to a forming method for forming an automobile air intake pipe by winding a non-woven fabric. Background technique [0002] The structure of the traditional automobile air intake pipe is made of polypropylene injection molded parts connected to the car engine through a sealing strip. The polypropylene injection molded parts need to be customized according to the installation space in the car. There are many parts, high production cost, cumbersome assembly and poor applicability. Existing automobile air intake pipes use rubber bellows, which consume high energy consumption and high cost in processing, have low strength after bending and installation, and have poor anti-aging performance. Once aging and damage will greatly affect the service life of the engine, it cannot effectively Reduce noise, inconvenient recycling can easily cause secondary pollution. Contents...

AI Technical Summary

Problems solved by technology

[0003] In order to solve the problem that the automobile intake pipe in the prior art is molded by polypropylene injection molding, its structure is complex, there are many parts, cumbersome assembly, and poor applicability, and rubber bellows are used, which has high production cost, poor bending strength performance, and poor aging resistance. The noise reduction effect is poor, the service life is short, and it is easy to cause secondary pollution. The invention provides a non-woven fabric winding type automobile intake pipe forming process. The forming method is simple in process and fast in forming speed. After forming, it combines non-woven The soft and hard characteristics of cloth and hard nylon yarn, the overall flexibility, high strength, high bending hardness, high temperature resistance, low temperature resistance, anti-aging, long service life, easy to recycle