Manufacturing process of single-piece warp-knitted car roof

A technology of automobile canopy and manufacturing process, applied in metal processing and other directions, can solve the problems of poor appearance, heavy product weight, easy to be dirty, etc., and achieve the effects of easy molding, good appearance and pollution reduction.

Active Publication Date: 2015-08-26
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

The existing composite fabrics mainly have the following problems: 1. It is easy to get dirty; 2. The product is heavy, which is not conducive to the lightweight of the whole vehicle; Blistering and other phenomena; 4. Monomer fabrics are compounded with PU by flame or glue, which may easily cause VOC failure and fail to meet the technical requirements of the main engine factory; 5. For non-woven composite fabrics, the appearance is poor; 6. The cost is high

Method used

the structure of the environmentally friendly knitted fabric provided by the present invention; figure 2 Flow chart of the yarn wrapping machine for environmentally friendly knitted fabrics and storage devices; image 3 Is the parameter map of the yarn covering machine
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Examples

Experimental program
Comparison scheme
Effect test

Embodiment 1

[0018] Embodiment one: a kind of manufacturing process of single-body warp-knitted cloth car roof, comprises following processing steps:

[0019] (1) Material laying: spread the polyester warp-knitted fabric on the fabric laying platform, and the weight of the polyester warp-knitted fabric is 100g / ㎡;

[0020] (2) Baking temperature softening: send the polyurethane composite board into the oven for baking temperature softening, the temperature is 150°C, and the baking time is 90 seconds; the materials of the polyurethane composite board are non-woven fabric and glass fiber from bottom to top. Felt, polyurethane foam, glass fiber felt, PE film; the weight of the polyurethane composite board is 700g / ㎡;

[0021] (3) Molding: Send the polyurethane composite board softened by baking temperature into the mold cavity of the car roof, and transport the polyester warp-knitted fabric in step (1) above the polyurethane composite board, and the polyester warp-knitted fabric and polyurethan...

Embodiment 2

[0023] Embodiment two: a kind of manufacturing process of warp-knitted single-body car roof, comprising the following process steps:

[0024] (1) Material laying: spread the polyester warp-knitted fabric on the fabric laying platform, and the weight of the polyester warp-knitted fabric is 300g / ㎡;

[0025] (2) Baking temperature softening: send the polyurethane composite board into the oven for baking temperature softening, the temperature is 300°C, and the baking time is 90 seconds; the materials of the polyurethane composite board are non-woven fabric and glass fiber from bottom to top. Felt, polyurethane foam, glass fiber felt, PE film; the weight of the polyurethane composite board is 1000g / ㎡;

[0026] (3) Molding: Send the polyurethane composite board softened by baking temperature into the mold cavity of the car roof, and transport the polyester warp-knitted fabric in step (1) above the polyurethane composite board, and the polyester warp-knitted fabric and polyurethane ...

Embodiment 3

[0028] Embodiment three: a kind of manufacturing process of single-body warp-knitted cloth car roof, comprises following processing steps:

[0029] (1) Material laying: spread the polyester warp-knitted fabric on the fabric laying platform, and the weight of the polyester warp-knitted fabric is 200g / ㎡;

[0030] (2) Baking and softening: send the polyurethane composite board into the oven for drying and softening, the temperature is 200°C, and the baking time is 60 seconds; the materials of the polyurethane composite board are non-woven fabric and glass fiber from bottom to top. Felt, polyurethane foam, glass fiber felt, PE film; the weight of the polyurethane composite board is 800g / ㎡;

[0031] (3) Molding: Send the polyurethane composite board softened by baking temperature into the mold cavity of the car roof, and transport the polyester warp-knitted fabric in step (1) above the polyurethane composite board, and the polyester warp-knitted fabric and polyurethane One side of...

the structure of the environmentally friendly knitted fabric provided by the present invention; figure 2 Flow chart of the yarn wrapping machine for environmentally friendly knitted fabrics and storage devices; image 3 Is the parameter map of the yarn covering machine
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Abstract

The invention relates to a manufacturing process of a single warp-knitted automobile roof, which is characterized in that it comprises the following process steps: (1) material laying: laying the warp-knitted fabric on a fabric laying platform; (2) drying Warm softening: send the polyurethane composite board into the oven for softening, the temperature is 150-300°C, and the baking time is 30-90 seconds; (3) Compression molding: send the polyurethane composite board softened after baking into the car In the roof mold cavity, the warp-knitted fabric in step (1) is transported to the top of the polyurethane composite board, and press-molded to obtain the semi-finished car roof; the molding pressure is 4-6 MPa, and the molding time is 40-80 seconds; (4) Waterjet cutting: Take out the semi-finished car headliner obtained by molding from the car headliner mold, transfer it to the cutting jig, and cut it into the required size to obtain the car headliner; the cutting water pressure is 40000-50000psi , Cutting pressure is 0.4 ~ 0.7MPa. The product of the invention is light in texture and meets the requirements of light weight and high performance of modern automobiles.

Description

technical field [0001] The invention relates to a manufacturing process of a car roof, in particular to a manufacturing process of a single warp knitted fabric car roof, which belongs to the technical field of car interior parts. Background technique [0002] Car roof has the characteristics of decoration, sound absorption, sound insulation, heat insulation, etc. In the era of more and more pursuit of high performance, environmental protection and lightweight, car interior has become an important factor for people to choose a car, so the car interior parts Increasingly demanding. At present, the roof fabric mainly includes knitted composite fabrics and non-woven composite fabrics. The existing composite fabrics mainly have the following problems: 1. It is easy to get dirty; 2. The product is heavy, which is not conducive to the lightweight of the whole vehicle; Blistering and other phenomena; 4. Monomer fabrics are compounded with PU by flame or glue, which may easily caus...

Claims

the structure of the environmentally friendly knitted fabric provided by the present invention; figure 2 Flow chart of the yarn wrapping machine for environmentally friendly knitted fabrics and storage devices; image 3 Is the parameter map of the yarn covering machine
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Application Information

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Patent Type & Authority Patents(China)
IPC IPC(8): B29C43/20B29C43/58B26F3/00
Inventor 姜丹
Owner WUXI GISSING AUTO ACOUSTIC PARTS TECH CO LTD
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