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Edge covering method and device of plastic honeycomb sandwich panel

A technology of plastic honeycomb and sandwich panels, applied in the directions of lamination devices, transportation and packaging, chemical instruments and methods, etc., can solve the problems of easy re-opening of upper and lower skins and failure of edge sealing, so as to achieve smooth folding and improving. Efficiency, the effect of simplifying the process

Inactive Publication Date: 2017-12-08
YANTAI ZHENGHAI HIGH TECH
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

However, since the material is still hot when the mold is opened, the upper and lower skins tend to open up again, causing the edge closure to fail
[0008] In short, the edge closure of plastic honeycomb sandwich panels is still a technical problem in the industry

Method used

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  • Edge covering method and device of plastic honeycomb sandwich panel
  • Edge covering method and device of plastic honeycomb sandwich panel
  • Edge covering method and device of plastic honeycomb sandwich panel

Examples

Experimental program
Comparison scheme
Effect test

Embodiment 1

[0044] First, prepare the plastic honeycomb sandwich panel with glass fiber reinforced PP as the upper and lower skin and PP honeycomb in the middle, and cut the lower skin to Figure 5 The extent shown by the solid line, the upper epidermis is cut to Figure 5 In the range shown by the dotted line, the plastic honeycomb in the hemming area is also removed, as shown in Figure 6shown. The width of the wrapping area is set at 25-40mm.

[0045] After the plate is positioned and fixed on the tooling, a high-temperature component with a temperature of 220°C corresponding to the shape of the edge-wrapping area of ​​the plate is dropped from above, and after the high-temperature component is dropped into place, if Figure 9 As shown, the lower epidermis outside the contours of the product is softened.

[0046] After the high-temperature parts are withdrawn, the turning mechanism operates, and the lower skin is pushed upwards and bonded to the side of the PP honeycomb. On the uppe...

Embodiment 2

[0048] First, prepare the plastic honeycomb sandwich panel with glass fiber reinforced PP as the upper and lower skin and PP honeycomb in the middle, and cut the lower skin to Figure 4 The extent shown by the solid line, the upper epidermis is cut to Figure 4 In the dotted line range shown, the plastic honeycomb in the hemming area is Figure 7 The sloped excess shown can be machined with a sloped CNC milling cutter. The width of the hemming area is set at 13-18mm.

[0049] After the plate is positioned and fixed on the tooling, a high-temperature component with a temperature of 260°C corresponding to the shape of the edge-wrapping area of ​​the plate is dropped from above. After the high-temperature component falls into place, if Figure 9 As shown, the honeycomb outside the outline of the product is completely melted, and the lower skin is also softened.

[0050] After the high-temperature parts are withdrawn, the folding mechanism operates, and the lower skin is pushed...

Embodiment 3

[0052] First, prepare the plastic honeycomb sandwich panel with glass fiber reinforced PP upper and lower skins and PP honeycomb in the middle, and the lower skin is also equipped with surface materials, and the lower skin is cut to Figure 4 The extent shown by the solid line, the upper epidermis is cut to Figure 4 In the dotted line range shown, the plastic honeycomb in the hemming area is as Figure 8 As shown, there is no regularity in height. The width of the wrapping area is set at 25-40mm. The cutting method of the wrapping area can be to cut out the contour lines of the upper skin and the lower skin, and then in the process of removing the waste area, the plastic honeycomb between the two contour lines is randomly removed.

[0053] After the plate is positioned and fixed on the tooling, a high-temperature component with a temperature of 280°C corresponding to the shape of the edge-wrapping area of ​​the plate is dropped from above. After the high-temperature compone...

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Abstract

The invention relates to an edge covering method and device of a plastic honeycomb sandwich panel. An edge sealing region is arranged outside a product outline; an upper surface skin is removed in the edge sealing region; a high-temperature part is used for smelting from top to bottom to remove a honeycomb and soften a lower surface skin; then the softened lower surface skin is folded over to realize edge covering of a product. By adopting an edge covering manner, the edge of the product is full and straight and the edge strength of the product is increased; the edge sealing difficulty of a PPHC (Polypropylene Honeycomb) material is solved and application of a PPHC to a spare tire cover plate is propelled.

Description

technical field [0001] The invention relates to the technical field of composite materials, in particular to an edge wrapping method for a plastic honeycomb sandwich panel. Background technique [0002] The honeycomb sandwich structure has the characteristics of light weight and high strength due to its hollow structure, and is widely used in automobile spare tire covers. [0003] The common honeycomb sandwich spare tire cover has two materials, one is PHC board (abbreviation of Paper HoneyComb, polyurethane spraying process), the core material is honeycomb paper, the skin is glass fiber reinforced polyurethane foam, and the other is plastic honeycomb Sandwich panel, the skin is glass fiber reinforced plastic, and the core material is plastic honeycomb. Among the plastic honeycomb sandwich panels, the typical one is PP honeycomb sandwich panel, referred to as PPHC board (abbreviation of PolyPropylene HoneyComb, dry process), the core material is PP honeycomb, and the skin i...

Claims

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Application Information

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IPC IPC(8): B32B37/00B32B38/00B60R13/01
CPCB32B37/00B32B38/0012B32B38/0036B60R13/01
Inventor 王克强王国淑李海帆单汝坤
Owner YANTAI ZHENGHAI HIGH TECH
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