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Production method of automotive cockpit front wall sound insulation pad

A production method and technology of sound insulation pads, which are applied to vehicle components, transportation and packaging, etc., can solve the problems that are not conducive to the weight reduction of the whole vehicle, energy saving, sound absorption indicators can not meet the requirements, and sound insulation indicators can not meet the requirements, so as to achieve the improvement Work efficiency, weight reduction, and cost reduction effects

Inactive Publication Date: 2013-01-16
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

[0003] 1. The sound absorption index cannot meet the requirements;
[0004] 2. The sound insulation index cannot meet the requirements;
[0005] 3. Poor heat insulation;
[0006] 4. Product materials are not environmentally friendly;
[0007] 5. The product is heavy, which is not conducive to the lightweight and energy saving of the whole vehicle

Method used

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Examples

Experimental program
Comparison scheme
Effect test

Embodiment 1

[0022] Produce Dongfeng Nissan 118 cockpit front wall sound insulation pad, its specification is: L1550mm×W1050mm.

[0023] The production method comprises the steps of:

[0024] a. Place the hard layer of thermoplastic felt on the bottom layer, and the soft layer of thermoplastic felt on the upper layer, and spread them on the oven mesh chain;

[0025] b. Feed the soft and hard layers of thermoplastic felt on the oven net chain into the oven for softening. Control it at 110~113 seconds;

[0026] c. Put the soft and hard layers of thermoplastic felt softened by baking temperature into the mold for pressing and cooling to form a semi-finished product. When pressing and cooling for forming, the forming pressure is controlled at 18~19MPa, the forming time is controlled at 80~85 seconds, and the temperature of the mold Control at 5~7℃;

[0027] d. Position the semi-finished product on the water jet cutting device for water jet cutting. The cutting water pressure of the water je...

Embodiment 2

[0035] Produce Wuhan Shenlong M3M4 cockpit front wall sound insulation pad, its specification is: L1200mm×W1200mm.

[0036] The production method comprises the steps of:

[0037] a. Place the hard layer of thermoplastic felt on the bottom layer, and the soft layer of thermoplastic felt on the upper layer, and spread them on the oven mesh chain;

[0038] b. Send the soft and hard layers of thermoplastic felt on the oven net chain into the oven for softening. Controlled at 113~116 seconds;

[0039] c. Put the soft and hard layer thermoplastic felts softened by baking temperature into the mold for pressing and cooling to form a semi-finished product. When pressing and cooling for forming, the forming pressure is controlled at 19~20MPa, the forming time is controlled at 85~90 seconds, and the temperature of the mold Control at 7~8°C;

[0040] d. Position the semi-finished product on the water jet cutting device for water jet cutting. The cutting water pressure of the water jet ...

Embodiment 3

[0048] Produce Zhengzhou Nissan C16A cockpit front wall sound insulation pad, its specification is W1500mm×L1200mm.

[0049] The production method comprises the steps of:

[0050] a. Place the hard layer of thermoplastic felt on the bottom layer, and the soft layer of thermoplastic felt on the upper layer, and spread them on the oven mesh chain;

[0051] b. Send the soft and hard layers of thermoplastic felt on the oven net chain into the oven for drying and softening. The temperature of the upper heating zone of the oven is controlled at 265~270°C, and the temperature of the lower heating zone of the oven is controlled at 345~350°C. Control in 116~120 seconds;

[0052] c. Put the soft and hard layers of thermoplastic felt softened by baking temperature into the mold for pressing and cooling to form a semi-finished product. When pressing and cooling for forming, the forming pressure is controlled at 19~20MPa, the forming time is controlled at 88~90 seconds, and the temperatur...

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PUM

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Abstract

The invention discloses a production method of an automotive cockpit front wall sound insulation pad. The production method includes the following steps: hard layer thermoplastic felt is arranged at the bottom layer, a soft layer thermoplastic felt is arranged at the top layer, and the hard layer thermoplastic felt and the soft layer thermoplastic felt are flatly laid on a net chain of an oven; the hard layer thermoplastic felt and the soft layer thermoplastic felt on the net chain of the oven are sent in the oven to be dried and softened; the dried and softened hard layer thermoplastic felt and the dried and softened soft layer thermoplastic felt are placed in a mold to be pressed and cooled to form a semi-finished product; and the semi-finished product is positioned on a water jet cutting device to perform water jet cutting so as to obtain a finished product of the automotive cockpit front wall sound insulation pad. The production method of the automotive cockpit front wall sound insulation pad solves the problem of performance index of sound absorption, sound insulation, environmental protection, light weight and the like of the cockpit front wall sound insulation pad, greatly reduces weight of the cockpit front wall sound insulation pad, meets requirements for light weight design of a whole vehicle, uses the hard layer thermoplastic felt and the soft layer thermoplastic felt as raw materials, reduces cost, has more selectivity, is free of semi-finished product accumulation on the way, saves manufacturing cost, and is free of generation of harmful substances in a whole production process of the product.

Description

technical field [0001] The invention discloses a production method of an automobile cabin cowl sound insulation pad, and belongs to the technical field of automobile interior decoration processing. Background technique [0002] The car cockpit front wall sound insulation pad is installed in the car front wall cockpit to play the role of heat insulation, sound insulation and sound absorption. 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, high sound insulation, low weight, strong heat insulation, and environmental protection of the cockpit sound insulation pad have become bottlenecks, restricting the development of the automob...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): B60R13/08B29C70/42
Inventor 俞雄
Owner WUXI GISSING AUTO ACOUSTIC PARTS TECH CO LTD
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