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A soft instrument panel cavitation repair process method, its special filling body and device

A technology for instrument panels and fillers, which is applied in the field of soft instrument panel cavitation repair technology, its special fillers and devices, which can solve the problems of effective repair of cavitation, scrapping defective products, increasing production costs, etc., and achieve repair effects Good, avoid secondary defects, save production costs

Active Publication Date: 2016-10-05
GREAT WALL MOTOR CO LTD
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

The current technology cannot completely solve the problem of cavitation in the foaming process of foamed layer products, and there is no effective method to effectively repair the generated cavitation, which can only make defective products scrapped and increase Increased production costs, resulting in great waste

Method used

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  • A soft instrument panel cavitation repair process method, its special filling body and device
  • A soft instrument panel cavitation repair process method, its special filling body and device
  • A soft instrument panel cavitation repair process method, its special filling body and device

Examples

Experimental program
Comparison scheme
Effect test

Embodiment 1

[0047] Such as Figure 1-4 As shown, there are defective air pockets 1 in the foam layer 3 of the instrument panel. On the back side of the epidermis, determine the highest point and the lowest point along the direction of the skeleton 4 on the section with the largest area on the air cavity 1 perpendicular to the surface of the epidermis 2, and respectively center the highest point and the lowest point by 10mm 2 Within the range of the area, a circular channel with a diameter of 3-5mm is respectively opened as the exhaust groove 8 and the pouring runner 5, and the acute angle between the exhaust groove 8 and the pouring runner 5 and the horizontal direction is at 0 °-30° between. Adopt a commercially available polyethylene pipe with a wall thickness of 0.3-0.5mm and an outer diameter slightly smaller than the diameter of the vent groove 8 and the pouring runner 5, and cut it into a short pipe consistent with the length of the vent groove 8 and the pouring runner 5 As exhaus...

Embodiment 2

[0052] When the air pocket 1 is close to the edge of the instrument panel, the exhaust groove 8 and the pouring runner 5 can also be directly passed into the outside world from the foam layer 3, such as Figure 5 As shown, other repair steps are the same as in Example 1.

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Abstract

The invention provides a technological method for repairing an air void in a soft instrument board, a special filling body and a special device of the technological method. The method comprises the following steps: (1) respectively forming an exhaust groove and a pouring channel in the top part and the bottom part of some section of the air void in one side of the rear surface of a coating, wherein the exhaust groove and the pouring channel are communicated with the outside; (2) respectively fixing an exhaust pipe and a pouring pipe in the exhaust groove and the pouring channel; (3) applying a certain of pressure to the coating surface corresponding to the position of the air void, then pouring the filling body into the air void through the pouring pipe until the exhaust pipe is reached; (4) stopping applying the pressure to the coating surface after the filling body is cured, so as to finish the repairing. With the adoption of the method, the air void formed in the production of the soft instrument board can be repaired, and a defected product can be normally put into use after being repaired, so that the production cost can be saved.

Description

technical field [0001] The invention relates to a repairing process for manufacturing defects of a soft instrument panel in an automobile interior, in particular to a repairing process method for air pockets in a foam layer of a soft instrument panel and a special filling body and device thereof. Background technique [0002] With the development of the automobile industry, customers not only have higher requirements for the performance of the car, but also have more requirements for the appearance and comfort of the car. In order to improve the visual comfort of the car interior, customers' satisfaction with high-end cars and the superiority of high-end cars , the use of soft dashboards in high-end cars has become a trend. At present, the soft instrument panel is mainly composed of a three-layer structure bonded together with a plastic skeleton, a PVC, ABS or TPO skin and a PU, PE or PP foam layer. Among them, during the foam molding process of the foam layer, local gas co...

Claims

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Application Information

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Patent Type & Authority Patents(China)
IPC IPC(8): B29C73/02
Inventor 陶华张小飞杜玉龙
Owner GREAT WALL MOTOR CO LTD
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