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Production process for cutting and edge wrapping of once-formed skylight of automobile roof

A production process and automotive technology, applied in the field of automotive interior parts, can solve the problems of the product's sound-absorbing performance not meeting the requirements, the poor peelability of the fabric and the substrate, the labor hours, and the process, etc., to improve work efficiency, good peeling performance, Process stability effect

Active Publication Date: 2012-05-09
湖北吉兴汽车部件有限公司
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

The cutting and hemming of the skylight of the existing canopy usually adopts two cuttings (cutting the base material first, then cutting the fabric for hemming or re-opening a pair of punching dies after laminating the fabric). The following problems: 1. The sound-absorbing performance of the product does not meet the requirements; 2. Too many working hours and processes, waste of manpower, additional equipment, and high production costs; 3. Poor peelability between the fabric and the substrate

Method used

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Examples

Experimental program
Comparison scheme
Effect test

Embodiment 1

[0018] Example 1: The production process steps of Dongfeng Honda 2EE canopy are as follows:

[0019] Canopy specifications: L2860×W1365MM

[0020] (1) Glue roll: take PU foam as the material and use a glue roll machine to roll glue; drum motor frequency: 30Hz, distance between upper and lower rollers of the glue machine: 5.0mm; glue amount: 17g / m per single side 2 , Glue on both sides; BASF 1975 model glue is used.

[0021] (2) Spraying softened water: spray softened water evenly on the above-mentioned rolled PU foam with a spray softening machine (product of Wuxi Jixing Automotive Acoustic Components Technology Co., Ltd.); motor frequency: 50Hz, sprayed softened water amount is 20g / m 2 .

[0022] The softened water is weighed at a weight ratio of solid ammonium carbonate: distilled water of 1:15 and then mixed and dissolved thoroughly.

[0023] PU foam is a product of Wuxi Jixing Automotive Acoustic Components Technology Co., Ltd.

[0024] (3) Spreading: Spread the materials in sequen...

Embodiment 2

[0032] Example 2: The production process steps of Dongfeng Honda 2EE canopy are as follows:

[0033] Canopy specifications: L2860×W1365 MM

[0034] (1) Glue roll: take PU foam as material and use a glue roll machine to roll glue; drum motor frequency: 20Hz, distance between upper and lower rollers of the glue machine: 4.5mm; glue amount: 15g / m per single side 2 , Glue on both sides.

[0035] (2) Spraying softened water: spray softened water evenly with a spray softening machine (product of Wuxi Jixing Automotive Acoustic Components Technology Co., Ltd.) on the above-mentioned rolled PU foam; motor frequency: 40Hz, and the amount of softened water sprayed is 15 g / m 2 .

[0036] The softened water is weighed according to the weight ratio of solid ammonium carbonate: distilled water of 1:12, and is prepared after being fully dissolved.

[0037] PU foam is a product of Wuxi Jixing Automotive Acoustic Components Technology Co., Ltd.

[0038] (3) Spreading: Spread the materials in sequence ac...

Embodiment 3

[0045] Example 3: The production process steps of Dongfeng Honda 2EE canopy are as follows:

[0046] Canopy specifications: L2860×W1365 MM

[0047] (1) Glue roll: take PU foam as material and use a glue roll machine to roll glue; drum motor frequency: 40Hz, distance between the upper and lower rollers of the glue roll: 5.5mm; glue amount: 19g / m per single side 2 , Glue on both sides.

[0048] (2) Spraying softened water: spray softened water evenly with a spray softening machine (product of Wuxi Jixing Automotive Acoustic Components Technology Co., Ltd.) on the above-mentioned rolled PU foam; motor frequency: 60Hz, sprayed softened water amount is 25 g / m 2 .

[0049] The softened water is weighed according to the weight ratio of solid ammonium carbonate: distilled water of 1:18, and is prepared after being fully dissolved.

[0050] PU foam is a product of Wuxi Jixing Automotive Acoustic Components Technology Co., Ltd.

[0051] (3) Spreading material: Spread the material in the order of ...

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Abstract

The invention relates to a production process for cutting and edge wrapping of a once-formed skylight of an automobile roof, and belongs to the technical field of automobile interior ornaments. The production process comprises the following steps of: mainly selecting polyurethane (PU) foam cotton as the roof substrate; rolling rubber and spraying softened water to both sides of the roof substrate; then laying the materials of knitting fabrics, glass fiber A, PU foam cotton, glass fiber B, non-aeration zone membranes, non-woven fabrics successively in order; and carrying out pressure molding, cooling shaping, cutting by a water cutter, skylight cutting and edge wrapping, and testing, thus completing the production process. The roof produced by the production process provided by the invention reaches the advanced level of international Class 3 acoustic absorption criterion. The bonding fastness of the fabrics and the substrate material is increased; insufficient bonding does not occur; and the bonding is more durable. In the whole manufacturing process, the labor intensity of workers in the manufacturing process is greatly reduced; and the production efficiency is increased; the numbers of molds and personnel are reduced, and the manufacturing cost is greatly lowered. No harmful substance is generated in the whole manufacturing process, and the product is environmentally-friendly.

Description

Technical field [0001] The invention relates to a production process for cutting and edging of a sunroof formed by a wet method of a car roof, in particular to a production process for a car roof which is installed on the top of a car and plays the role of heat insulation, sound insulation and beautification , Belongs to the technical field of automotive interior parts. Background technique [0002] The roof of the car is generally installed on the top of the car to play the role of heat insulation, sound insulation and beautification. In the era of increasing 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 buy a car, so the requirements for car interior parts Also getting higher. In the prior art, performance indicators such as high sound absorption, low weight, high strength, and low cost of the canopy have become bottlenecks, ...

Claims

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Application Information

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IPC IPC(8): B32B37/06B32B37/10B32B37/12
Inventor 周建名
Owner 湖北吉兴汽车部件有限公司
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