JPH01241339A - Dissimilar honeycomb panel and its production - Google Patents

Abstract

PURPOSE:To increase the joining rate of a core and face plate per specified area and to elevate the strength of a panel itself by forming a honeycomb core in the cell of about pentagonal shape having parallel two sides. CONSTITUTION:The peeling place by a release agent (c) is formed in zigzags in the sectional direction of a laminating body on the laminating body of the brazing sheet (a) of an Al alloy so as to cause no brazing exceeding the specified range at the time of a brazing filler metal (b) being melted. In the direction between the sheets (a) the width of the peeling place by the release agent (c) and that of the mutual space (d) are arranged alternately at constant intervals and the (c) and (d) are arranged vertically and alternately in the sectional direction of the laminating body. On the other hand the peeling place mutual space (d) is biased to one part from the center of the peeling place mutual space (d) of adjoining sheets (a) in the sectional direction. The laminating body is then spread until the end of one part of the peeling places is bent at about right angles in the laminating direction after executing brazing by making it high temp. by heating. As a result the honeycomb core 1 whose cell 4 is pentagonal is obtd.

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, a honeycomb panel is a laminate formed by bonding upper and lower face plates 2.3 to both sides of a honeycomb core 1, as shown in FIG.

For example, in a honeycomb panel made of aluminum, the honeycomb core 1 is made of a laminate of plating sheets a made of an aluminum alloy coated with a skin material for wax bones by rolling, as shown in FIG. In order to prevent brazing beyond a predetermined range when melted, the parts to be peeled off by 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 this, 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 center of the peeled area between adjacent sheets due to the release agent C is d between the other peeled areas.
They are perfectly staggered so that they are located in the center of the area, and the width d between the peeled areas where the release agent C is not applied is about one-third of the width of the areas where it is applied. It is.

This d becomes a solder part, and when it is expanded in the lamination direction, it becomes a honeycomb core l 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 where the wax is applied are fine, making it a time-consuming process. In addition, the latter loses the characteristic of the honeycomb core that it can withstand loads from any direction as polygonal cells, and ends up having high strength only in one direction.

An object of the present invention is to provide a honeycomb panel and its manufacturing method that can eliminate the disadvantages of the conventional example and increase the strength of the panel itself while taking advantage of the advantages of the polygonal cell core.

[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. In a honeycomb panel formed by expanding until bending and by joining face plates to the upper and lower sides of a honeycomb core, 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 Figure 2, a laminate of aluminum alloy plating sheets a is coated with release agent C at the peeling points to prevent brazing beyond a predetermined range when the brazing filler metal melts. It is the same as the conventional method in that it is formed in a staggered manner in the cross-sectional direction.

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

In the direction between the sheets 3, 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 as follows; d is arranged vertically every other time.

On the other hand, the peeling tilt points d (joints) are positioned to one side from the center of the peeling points d (joints) between adjacent seams (a) in the cross-sectional direction of the laminate (in Fig. 2, A<B).

In this way, the peeled parts of the mold release material C are formed in a staggered manner, and after the laminated body is heated to a high temperature and brazed, it is expanded in the lamination direction to widen the peeled parts, as shown in Fig. 3. 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) has more parts on the α side of the thin plate 5.

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

In order to test the effects of the present invention, aluminum plates (JIS 1100) with a thickness of 0.2 mm were laminated and bonded using an adhesive as shown in Figure 2, and then stretched in the lamination direction as shown in Figure 3. A honeycomb core was formed.

The size of the cell 4 of this honeycomb core was 1/2 inch (opposite side length) and height 27 mm. The upper and lower surfaces of this honeycomb core are covered with aluminum alloy plates with a thickness of 1.2 mm ((
J I 53003) was adhered 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).
It was 30kgf.

On the other hand, a honeycomb panel (cell size 1/2 inch, height 27 mm) was made from the hexagonal cells 4 shown in Figs. 5 and 6 with the same core and face plate materials and dimensions, and a similar drum peel test was carried out. When I went there and measured the peel strength 2
It was 0 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 the drawing]

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. A plan view, FIG. 4 is a partially cutaway perspective view of a conventional honeycomb panel, and FIG. 5 is a partially vertical front view of a laminate used in the conventional example.
FIG. 6 is a plan view of the core after expansion, and FIG. 7 is an explanatory diagram showing a comparison between the product of the present invention and a conventional product. l... Honeycomb core 2.3... Face plate 4... Cell 5... Thin plate a... Placing sheet b... Brazing metal C... Mold release agent d... Peeling points mutually Between (joint part) Applicant: Sumitomo Light Metal Industries, Ltd. Tsuka ± Figure 1 2c face plate) 4 Figure 2 Figure 3 Figure 4 Figure 5 Figure 6 Darkness

Claims (1)

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