Automobile ceiling producing process

A production method and the technology of the car roof, which is applied in the field of car interior parts, can solve the problems of the sound absorption index not meeting the requirements, unfavorable vehicle lightweight, and heavy product weight, so as to improve operating efficiency, reduce the weight of the roof, The effect of high rigidity

Inactive Publication Date: 2007-01-03
WUXI GISSING AUTO ACOUSTIC PARTS TECH CO LTD
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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

[0019] Embodiment 1: The production process steps of the roof of Guangzhou Honda 05 ODY commercial vehicle are as follows:

[0020] Canopy specification: L2750*W1450MM

[0021] 1. Material laying. The ceiling base is made of low-density PU foam molding material, and the PU foam molding material is first cut according to the size of the ceiling, so that it is smooth and free of wrinkles;

[0022] 2. Roll glue. The glue rolling machine imported from Italy is used to roll the PU foam molding material of the roof base. The glue rolling machine has the function of double-sided glue, automatic heating, and can accurately control the amount of glue. The speed of the glue rolling machine: every 25 revolutions per minute, the distance between the upper and lower rollers of the rubber rolling machine: 7.0mm; the amount of glue applied: single side: 15g / m 2 ;

[0023] 3. Spray demineralized water. Spray softened water on the rubber-coated substrate above, using special softened wate...

Embodiment 2

[0033] Embodiment 2: The production process steps of the roof of Shenlong Fukang hatchback are as follows:

[0034] Canopy specification: L1680*W1220MM

[0035] 1. Material laying. The ceiling base is made of low-density PU foam molding material, 2. Rolling glue. Glue rolling machine speed: 30 revolutions per minute, distance between the upper and lower rollers of the glue rolling machine: 7.6mm; gluing amount: single side: 20g / m 2 ; 3. Spray demineralized water. Motor frequency: 30HZ, softened water volume: 210g / pc; 4. Material laying; 5. Compression molding. Molding temperature: upper mold temperature: 130°C, lower mold temperature: 135°C, molding pressure: 75kgf / cm 2 , Molding time: 55sec; 6. Cooling and shaping. Cooling time: 45~55sec; 7. Fabric fit. The fabric is made of non-woven fabric, laminating temperature: upper mold temperature: 140°C, lower mold temperature: 130°C, laminating pressure: 55kgf / cm 2 , Fitting time: 35sec; 8. Cooling and shaping. Cooling time:...

Embodiment 3

[0037] Embodiment 3: The production process steps of Shenlong Kaixuan roof are as follows:

[0038] Canopy specification: L1900*W1300MM

[0039] 1. Rolling glue: speed of glue rolling machine: 27.5 revolutions per minute, distance between upper and lower rollers of glue rolling machine: 7.3mm; amount of glue applied: single side: 18g / m 2 ;2. Spray softened water: motor frequency: 28HZ, softened water volume: 200g / pc; 3. Compression molding: molding temperature: upper mold temperature: 125℃, lower mold temperature: 130℃, molding pressure: 70kgf / cm 2 , Molding time: 53sec; 4. Cooling and setting: cooling time: 50sec; 5. Fabric bonding: bonding temperature, upper mold temperature: 135℃, lower mold temperature: 125℃, bonding pressure: 50kgf / cm 2 , Fitting time: 32sec; 6. Cooling and shaping: cooling time: 50sec; 7. Waterjet cutting: cutting water pressure: 45000psi, cutting air pressure: 5.0kg / cm 2 . 8. Attachment installation: pressure holding time: 12sec, opening and closing ...

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PUM

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Abstract

The present invention relates to automobile inner decoration technology, and is especially automobile ceiling producing process. The present invention adopts low density foamed polyurethane material as the base material, and the automobile ceiling producing process includes the steps of rolling glue, spraying softening water, pressing to form, cooling to fix, adhering facing material, cooling to fix for the second time, cutting with water cutter, mounting fittings and inspection. The automobile ceiling assembly has high performance and light weight.

Description

technical field [0001] The invention relates to a production method of an automobile roof, specifically for being installed on the top of an automobile to play the functions of heat insulation, sound insulation and beautification, and belongs to the technical field of automobile interior trim parts. Background technique [0002] Automotive interior parts are 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 the canop...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): B32B37/10B32B5/22B29C43/02B60R13/02
Inventor 刘明春
Owner WUXI GISSING AUTO ACOUSTIC PARTS TECH CO LTD
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