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Edgefolding method and device of plastic honeycomb sandwich plate

A plastic honeycomb and sandwich panel technology, which is applied to other household appliances, household appliances, household components, etc., can solve the problems of edge sealing failure, upper and lower skins are easy to open again, and achieve the effect of reducing operations and simplifying the production process

Active Publication Date: 2018-04-13
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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  • Edgefolding method and device of plastic honeycomb sandwich plate
  • Edgefolding method and device of plastic honeycomb sandwich plate
  • Edgefolding method and device of plastic honeycomb sandwich plate

Examples

Experimental program
Comparison scheme
Effect test

Embodiment 1

[0041] First prepare the plastic honeycomb sandwich panels with glass fiber reinforced PP on the upper and lower skins and PP honeycomb in the middle, and cut to Figure 4 shown in solid external shape, larger than product dimensions ( Figure 4Internal realization), besides the product outline, it also includes the first folding area and the second folding area.

[0042] After the plate is positioned and fixed on the tooling, the high-temperature parts with a temperature of 200-300 ° C corresponding to the shape of the body thinning area, the first hem area, and the second hem area are dropped from above. The folded area is heated and compressed as Figure 5 the shape shown.

[0043] After the high-temperature parts are withdrawn, firstly, the first turning area and the second turning area are turned upwards by 90° to achieve Figure 6 shown in the shape, then the second folded area continues to be folded inward by 90°, reaching as Figure 7 The shape shown, and press and...

Embodiment 2

[0046] First prepare the plastic honeycomb sandwich panel with glass fiber reinforced PP on the upper and lower skins and PP honeycomb in the middle, and cut to Figure 4 The outer solid line shape is shown. and follow Figure 4 Cut off the back skin corresponding to the first fold line and the second fold line at the dotted line position shown in . The cutting depth can enter the PP honeycomb layer, as long as it does not damage the front skin.

[0047] After the plate is positioned and fixed on the tooling, the high-temperature parts with a temperature of 200-300 ° C corresponding to the shape of the body thinning area, the first hem area, and the second hem area are dropped from above. The sheet is heated and compressed into a Figure 8 the shape shown.

[0048] After the high-temperature parts are withdrawn, firstly, the first turning area and the second turning area are turned upwards by 90° to achieve Figure 9 shown in the shape, then the second folded area continu...

Embodiment 3

[0053] First prepare the plastic honeycomb sandwich panel with glass fiber reinforced PP on the upper and lower skins and PP honeycomb in the middle, and cut to Figure 4 The outer solid line shape is shown. And cut off the back skin of the first thinned area and the second thinned area. The PP honeycomb close to the back skin can also be cut off a bit, and the remaining PP honeycomb is higher than Figure 11 The thickest parts of the first thinned region and the second thinned region shown are sufficient. The back skin of the thinning area of ​​the main body can also be partially removed, and only a part of the back skin can be retained for bonding with the second folded area that is folded back. higher than Figure 11 Some of the PP honeycomb in the outline of the thinned area of ​​the middle body can also be removed, and an appropriate amount of hot-melt compression can be retained for subsequent bonding.

[0054] After the plate is positioned and fixed on the tooling, ...

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Abstract

The invention relates to an edgefolding method and device of a plastic honeycomb sandwich plate. An edgefolding area is arranged at the edge of a product, the edgefolding area comprises a body thinning area in the outline of the product, a primary folding area and a secondary folding area out of the outline of the product. After hot pressing is conducted through a high temperature part, the edgefolding area is subjected to compression molding, and a primary folding line and a secondary folding line are generated. After the primary folding area and the secondary folding area are folded in placeto the back face along the primary folding line and the secondary folding line, and the primary folding area and the secondary folding area coincide with the body thinning area, and compressed, cooled and adhered together. By adopting the edgefolding mode, the edge of the product is full, straight and firm, the edge strength of the product is improved, the problem of sealing of the edge of a plastic honeycomb sandwich plate material is solved, and application of the plastic honeycomb sandwich plate material to a spare tire cover plate can be promoted.

Description

technical field [0001] The invention relates to the technical field of composite materials, in particular to a method for folding edges of plastic honeycomb sandwich panels. 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 ...

Claims

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Application Information

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IPC IPC(8): B29D99/00
Inventor 李海帆朱维珍王国淑王克强韦明
Owner YANTAI ZHENGHAI HIGH TECH
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