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Production method of vehicle top using wet treatment

A technology of wet processing and production method, which is applied in the direction of upper structure and upper structure sub-assembly, etc. It can solve the problems of sound absorption index not meeting the requirements, unfavorable vehicle lightweight, and heavy product weight, so as to improve operating efficiency, Reduced headliner weight and high rigidity

Active Publication Date: 2008-12-31
广州吉兴汽车内饰件有限公司
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

Existing ceilings are usually formed directly from composite PU sheets. This molding process mainly has the following problems: 1. The sound absorption index does not meet the requirements, usually only reaching level 2; 2. The rigidity of the product is poor, especially for long-sized products. Easy to break and sag; 3. The product is heavy, which is not conducive to the lightweight of the whole vehicle and energy saving

Method used

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Examples

Experimental program
Comparison scheme
Effect test

Embodiment 1

[0021] Embodiment 1: The production process steps of the roof of Guangzhou Toyota Yaris are as follows:

[0022] Canopy specification: L1730×W1250MM;

[0023] The base material is made of low-density PU foam molding material.

[0024] 1. Pretreatment of PU material for car roof substrate:

[0025] (1.) Rolling glue: The glue rolling machine rolls glue on the front and back of the base PU foam molding material. The glue rolling machine has the function of gluing on both sides. The automatic heating temperature is 45°C, and the amount of glue applied can be precisely controlled. Motor frequency: 30HZ, spacing between the upper and lower rollers of the rubber rolling machine: 5.0mm; glue amount: single side: 17g / m 2 ;

[0026] 2. Spray demineralized water: Spray demineralized water on the PU foam molding material with glue rolled above, and use special demineralized water spraying equipment. The PU demineralized water machine with glue can lay the material without drying treat...

Embodiment 2

[0034] Embodiment 2: The production process steps of the front panel roof of GAC Hino heavy truck are as follows:

[0035] Canopy specification: L1079×W2166MM;

[0036] The base material is made of low-density PU foam molding material.

[0037] 1. Pretreatment of PU material for car roof substrate:

[0038] (1.) Rolling glue: The glue rolling machine rolls glue on the front and back of the base PU foam molding material. The glue rolling machine has the function of gluing on both sides. The automatic heating temperature is 45°C, and the amount of glue applied can be precisely controlled. Motor frequency: 30HZ, spacing between the upper and lower rollers of the rubber rolling machine: 5.2mm; glue amount: single side: 20g / m 2 ;

[0039] 2. Spray demineralized water: Spray demineralized water on the above-mentioned rolled PU foam molding material with glue, and use special demineralized water spraying equipment. The PU demineralized water machine with glue can lay the material ...

Embodiment 3

[0046] Example 3: The production process steps of the rear panel roof of GAC Hino heavy truck are as follows:

[0047] Canopy specification: L564×W2162MM;

[0048] The base material is made of low-density PU foam molding material.

[0049] 1. Pretreatment of PU material for car roof substrate:

[0050] (1.) Rolling glue: The glue rolling machine rolls glue on the front and back of the base PU foam molding material. The glue rolling machine has the function of gluing on both sides, and the automatic heating temperature is 40°C. Motor frequency: 30HZ, spacing between the upper and lower rollers of the rubber rolling machine: 5.2mm; glue amount: single side: 20g / m 2 ;

[0051] 2. Spray demineralized water: Spray demineralized water on the above-mentioned rolled PU foam molding material with glue, and use special demineralized water spraying equipment. The PU demineralized water machine with glue can lay the material without drying treatment. Motor frequency: 50HZ, softened wa...

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PUM

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Abstract

The invention relates to a production method for vehicle top wet processing, in particular to a vehicle top which is mounted at the top part of the vehicle, plays the roles of heat isolation, sound isolation and beautification as well as belongs to the technical field of the interior decorating piece of the vehicle. The invention is characterized by selecting a PU material as the base material of the top, heating, rolling glues on the front surface and the back surface as well as spraying soft water on the PU material; laying a combination layer and cutting a roll type material; then pressing and forming, cooling and shaping, cutting by a water cutter and packaging into a box and warehousing after inspection. The production method of the invention realizes the performance indexes of the sound suction, heat resistance, light weight and high intensity of a top assembly, reaches the international top level of Grade three, greatly reduces the weight of the top, meets the requirements of the light weight design of the whole vehicle; during the working procedure of rolling glues, the PU material is adopted to carry out flow operation of glue rolling on the front surface and back surface, heating and shaping; the technique is stable; the rigidness of a product is high; besides, the product can not be broken or droop; no semi-finished products are accumulated during the process, thus saving the manufacturing cost; the whole production process of the product does not generate harmful matters; besides, the product belongs to environment-friendly product.

Description

technical field [0001] The invention relates to a production method for the wet treatment of the automobile roof, specifically for installing on the roof of the automobile to play the functions of heat insulation, sound insulation and beautification, and belongs to the technical field of automobile interior decorations. Background technique [0002] The car roof is generally installed on the top of the car to play the role of heat insulation, sound insulation and beautification. In the era of more and more pursuit of high performance, environmental protection, energy saving, lightweight, and individualization, the interior of a car, like the shape of a car, has become an important factor for people to choose a car. Therefore, the requirements for automotive interior parts are getting higher and higher. In the prior art, performance indicators such as high sound absorption, low weight, and high strength of the canopy have become bottlenecks, restricting the development of th...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): B60R13/02
Inventor 刘明春
Owner 广州吉兴汽车内饰件有限公司
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