JPH0518658B2 - - Google Patents

Description

DETAILED DESCRIPTION OF THE INVENTION [Industrial Application Field] The present invention relates to a honeycomb panel that is widely used for building materials and other uses, and particularly relates to an irregularly shaped honeycomb panel in which core cells are not hexagonal and a method for manufacturing the same.

[Conventional technology]

As is well known, the honeycomb panel has upper and lower face plates 2 and 3 on both sides of the honeycomb core 1, as shown in FIG.
It is a laminate made by joining together.

For example, in a honeycomb panel made of aluminum, the honeycomb core 1 is a laminate of brazing sheets a made of an aluminum alloy covered with a skin material for brazing by rolling, and a brazing material b fused thereon, as shown in FIG. In order to prevent brazing beyond a predetermined range when soldering, the parts to be peeled off by the mold release agent C are formed in a staggered pattern when viewed in the cross-sectional direction of the laminate, and the laminate is heated to a high temperature to perform brazing. After that, a hook or the like is driven into the end and the layer is expanded in the stacking direction to widen the peeled area.

In this case, the peeled areas caused by the release agent c are completely staggered in adjacent sheets such that the center of the peeled area is located at the center of the distance d between the other peeled areas, and Release agent c
The width d between the uncoated parts is approximately one-third of the width of the coated parts.

This d becomes a brazed portion, and when it is expanded in the lamination direction, it becomes a honeycomb core 1 in which hexagonal cells 4 are formed as shown in FIG.

Then, upper and lower face plates 2 and 3, also made of aluminum alloy, are brazed or bonded with adhesive to the honeycomb core 1.

[Problem to be solved by the invention]

However, in conventional honeycomb panels that have a honeycomb core made up of hexagonal cells, in order to improve the strength of the panel itself, it is necessary to reduce the size of the hexagonal cells or to create flat hexagonal cells with a honeycomb core and face plate per predetermined area. This increases the degree of bonding.

In the former case, the part where the mold release agent is formed and the part to be brazed are fine and the work is time-consuming. Moreover, in the latter case, the characteristic of the honeycomb core that it can withstand loads from any direction as a polygonal cell is weakened, and the honeycomb core has high strength only in one direction.

The purpose of the present invention is to eliminate the disadvantages of the conventional example,
It is an object of the present invention to provide a honeycomb panel that can increase the strength of the panel itself while taking advantage of the core formed by polygonal cells, and a method for manufacturing the same.

[Means to solve the problem]

In order to achieve the above object, the present invention provides a method for manufacturing a honeycomb panel in which sheets are laminated and bonded to form a laminate and the laminate is expanded. The joints are arranged at intervals and in a staggered manner in the cross-sectional direction of the laminate, and the joints are positioned offset to one side from the center between the joints of adjacent sheets, so that one end of the joint is at a substantially right angle. to extend until it bends,
and a honeycomb panel formed by joining face plates above and below a honeycomb core, the gist of which is that the honeycomb core is composed of approximately pentagonal cells having two parallel sides.

[Effect]

According to the invention, the honeycomb core of the honeycomb panel has cells that are substantially pentagonal with two parallel sides. Comparing this with a conventional honeycomb core panel with hexagonal cells, as shown in Figure 7, for the same area, the core is bonded to the face plate in more parts α, which increases the bonding ratio and increases the strength. Become something.

〔Example〕

Embodiments of the present invention will be described in detail below with reference to the drawings.

FIG. 1 is a partially cutaway perspective view showing one embodiment of the honeycomb panel of the present invention, and the same components as in FIG. 4 showing the conventional example are given the same reference numerals.

That is, the honeycomb panel is a laminate formed by bonding upper and lower face plates 2 and 3 to both sides of a honeycomb core 1, as in the conventional example.

In the present invention, the honeycomb core 1 is made up of approximately pentagonal cells 4 having two parallel sides at the brazing location. In the figure, numeral 5 indicates a thin plate forming the cell 4.

Next, the method of the present invention for producing such a honeycomb core 1 will be described in the case of an aluminum honeycomb panel.

As shown in Fig. 2, a release agent c is applied to a laminate of aluminum alloy brazing sheets a on a cross section of the laminate to prevent brazing beyond a predetermined range when the brazing filler metal b melts. It is the same as the conventional method in that it is formed in a staggered manner in the direction.

However, in the present invention, this staggered pattern is different from the conventional one as described below.

In the direction between the sheets a, the width of the peeled part by the release agent c and the width d between the peeled parts, that is, the joint part, are the same length, arranged alternately at regular intervals, and in the cross-sectional direction of the laminate, This means that every other item is lined up one above the other.

On the other hand, the distance d between the peeled parts (joint part) is the distance d between the peeled parts of adjacent sheets a in the cross-sectional direction of the laminate.
(In Fig. 2, A<B).

In this way, the peeled areas are formed in a staggered manner by the mold release material c, and after the laminate is heated to a high temperature and brazed, it is expanded in the stacking direction to widen the peeled areas, as shown in FIG. It is expanded until one end between the peeled parts (joint part) is bent at a substantially right angle.

As a result, the honeycomb core 1 in which the cells 4 are approximately pentagonal is obtained as described above.

A honeycomb panel is formed by joining face plates 2 and 3 above and below the honeycomb core 1. At this time, the joining of the core 1 and face plates 2 and 3 per predetermined area is as shown in FIG. In the case of the invention, a is larger by the side α of the thin plate 5.

Note that the pentagon in cell 4 is determined by the width of the peeled part by the release agent c and the width of the distance d between the peeled parts, but by considering these widths, a pentagon with the same length on all five sides can be obtained. You can also do it.

In order to test the effects of the present invention, an aluminum plate (JIS1100) with a thickness of 0.2 mm was attached to a second plate using an adhesive.
After laminating and adhering as shown in the figure, they were expanded in the lamination direction to form a honeycomb core as shown in Figure 3.
The size of cell 4 of this honeycomb core was 1/2 inch (length across opposite sides) and 27 mm in height. Aluminum alloy plates (JIS3003) with a thickness of 1.2 mm were glued to the top and bottom surfaces of this honeycomb core to form a honeycomb panel.

The peel strength of the face plate of the produced honeycomb panel was measured by a drum peel test (panel width 3 inches) and was found to be 30 Kgf.

On the other hand, a honeycomb panel (cell size 1/2 inch, height 27 mm) was made from the hexagonal cells 4 shown in Figures 5 and 6 with the same core and face plate materials and dimensions, and a similar drum peel test was performed. When the peel strength was measured, it was 20 kgf.

Although the above embodiments have been described with respect to honeycomb panels made of aluminum, sheet a can be made of various materials such as paper and aramid fibers, and can also be applied to honeycomb panels made of paper, synthetic resin, etc. be.

〔Effect of the invention〕

As described above, the irregularly shaped honeycomb panel of the present invention and its manufacturing method can increase the bonding ratio between the core and the face plate per predetermined area compared to the conventional honeycomb core panel with hexagonal cells, and as a result, , it is possible to obtain a high-strength honeycomb panel while manufacturing it simply and inexpensively as in the conventional method.

[Brief explanation of drawings]

Fig. 1 is a partially cutaway perspective view showing one embodiment of the irregularly shaped honeycomb panel of the present invention, Fig. 2 is a partial longitudinal sectional front view of the laminate used in the method of the present invention, and Fig. 3 is a view of the core after expansion. 4 is a partially cutaway perspective view of a conventional honeycomb panel, FIG. 5 is a partially vertical front view of a laminate used in the conventional example, and FIG. FIG. 7 is an explanatory diagram showing a comparison between the product of the present invention and the conventional product. 1... Honeycomb core, 2, 3... Face plate, 4...
Cell, 5... thin plate, a... brazing sheet,
b...brazing filler metal, c...mold release agent, d...between peeling points (joints).

Claims (1)

[Scope of Claims] 1. An irregularly shaped honeycomb panel comprising face plates joined to the upper and lower sides of a honeycomb core, wherein the honeycomb core is composed of approximately pentagonal cells having two parallel sides. 2. A method for manufacturing a honeycomb panel in which sheets are laminated and joined to form a laminate and the laminate is expanded, wherein the laminate has joints of the same width at regular intervals in the direction between the sheets and in the cross-sectional direction of the laminate. The joints are arranged in a staggered manner, and the joints are positioned to one side from the center between the joints of adjacent sheets, and are expanded until one end of the joint is bent at a substantially right angle. A method for manufacturing irregularly shaped honeycomb panels.