JPH09309163A - Honeycomb panel with curved surface and method for manufacturing the same - Google Patents

Abstract

(57) [Abstract] First, a curved surface having a predetermined curvature can be accurately obtained, and secondly, preparation and processing are easy and easy, and no labor is required. Thirdly, we propose a honeycomb panel with bending, which is also excellent in rigidity and strength, and a manufacturing method thereof. In this manufacturing method, a honeycomb core 1 in an under-expanded state B, which is formed by a stretching method and does not reach a normal expanded state, is prepared, and the honeycomb core 1 is provided with surface plates 2, 3
After adhering, the at least one of the inner surface plate 2 and the outer surface plate 3 is peeled off and removed from the bending target portion R that partially exists. Then, the target point R
By bending while bending, the honeycomb core 1 at the bending target portion R is further expanded from the under-expanded state B and the inside is compressed, and thus a partially bent bend is provided. The honeycomb panel 5 is obtained. It should be noted that it is conceivable to make a streak on the surface plates 2 and 3 instead of peeling off.

Description

Detailed Description of the Invention

[0001]

BACKGROUND OF THE INVENTION 1. Field of the Invention The present invention relates to a honeycomb panel having a bend and a method for manufacturing the same. That is, the present invention relates to a honeycomb panel in which a surface plate is adhered to both surfaces of a honeycomb core and also has a bent bend, and a manufacturing method thereof.

[0002]

2. Description of the Related Art FIG. 5 is a front view of a main portion of a honeycomb panel having a bend of this type of conventional example. (1) is a first example thereof, and (2) is a second example. , (3) shows a third example. Then, first, in the conventional example of the first example shown in FIG. 5 (1), regarding the flat one in which the surface plates 2 and 3 are adhered to both inner and outer surfaces of the honeycomb core 1 in the normally expanded state A which is the core material, First, using a bending jig such as a bevel, a pressing force is applied from the inside surface plate 2 side of the bending target portion R to bend the inside surface plate 2 in a concave shape, and the honeycomb core 1 at that portion is bent. Buckle. Then, the outer surface plate 3 is set to 9 in the illustrated example.
By bending it inward at 0 degree, a honeycomb panel 4 having a partially bent bend was obtained.

Further, in the conventional example of the second example shown in FIG. 5 (2), similarly, the flat plate in which the surface plates 2 and 3 are adhered to both inner and outer surfaces of the honeycomb core 1 in the normally expanded state A, respectively. First, using a cutting jig such as a circular saw or a band saw, the surface plate 2 and the honeycomb core 1 inside the bending target portion R are cut. Then, in the illustrated example, the outside surface plate 3 is bent inward by 90 degrees to obtain a honeycomb panel 4 having a partially bent bend.

Further, in the conventional example of the third example shown in FIG. 5 (3), the overall stretched state A is set, but the under-stretched state B (at the stretched type) is set at the bending target portion R. At the time of molding, compared with a normal expanded state in which each cell is expanded by about 100% and each cell has a regular hexagonal shape, each cell is expanded by about 40% to about 70% and each cell has a vertically long hexagonal shape),
The honeycomb core 1 is prepared. Then, with respect to a flat product in which the surface plates 2 and 3 are adhered to both inner and outer surfaces of the honeycomb core 1, the bending target portion R is bent inward by 90 degrees in the illustrated example to partially fold it. There was obtained a honeycomb panel 4 with a curved bend.

[0005]

The following problems have been pointed out in such a conventional example. First of all, the rigidity of the honeycomb core 1 and the inner and outer surface plates 2 and 3 becomes an obstacle, and the bending target portion R of the honeycomb panel 4 becomes
For example, it has been pointed out that it is difficult to be formed by bending inward such as 90 degrees, and does not have a predetermined accurate curvature. In particular, in the conventional example of the first example shown in FIG. 5 (1), the rigidity of the outer surface plate 3 and the rigidity of the partially buckled honeycomb core 1 hinder smooth bending,
Further, in the conventional example of the second example shown in FIG. 5 (2), the rigidity of the outer surface plate 3 and the contact between the cut honeycomb cores 1 and the cut surface between the inner surface plates 2 are different. In the conventional example of the third example shown in FIG. 5 (3), the rigidity of the inner and outer surface plates 3 was an obstacle to the smooth bending. Therefore, in the first, second, and third conventional examples, that is, in the conventional honeycomb panel 4 having the partially bent bend, the curvature of the bend target portion R is not a predetermined curvature. There were many problems.

Secondly, in the first, second, and third conventional examples, it has been pointed out that the preparation and processing are not easy and a dedicated jig or the like is required. That is, first, in both the first, second and third conventional examples, in view of the rigidity of the honeycomb core 1 and the inner and outer surface plates 2 and 3 described above, the bending process for forming the bending target portion R is easy. Instead, it was a very troublesome and time-consuming task. Further, in the first conventional example, it is necessary to buckle the honeycomb core 1 by using a bending jig such as a bevel, and in the second conventional example, a cutting jig such as a circular saw or a band saw is used for the inner side. It is necessary to cut the surface plate 2 and the honeycomb core 1 of the above, and in the third conventional example, the whole is in the normal expansion state A while the partial expansion state B is partially.
It was necessary to prepare the honeycomb core 1. As described above, the first, second, and third conventional examples, that is, the honeycomb panel 4 having the partially bent conventional bending is not easy to prepare and process, and is troublesome and troublesome. It was pointed out that a special jig etc. is also required.

Thirdly, in the first and second conventional examples, problems have been pointed out in terms of rigidity and strength. That is, in the first conventional example, the honeycomb core 1 as the core material
It has been pointed out that since the bending target portion R is buckled, the rigidity and strength of the honeycomb panel 4 at the bending target portion R are reduced. Further, in the second conventional example, since the honeycomb core 1 which is the core material is cut at the bending target portion R, it is indispensable to reinforce the adhesion of the portion, and even if the adhesion is reinforced. Still, it was pointed out that the rigidity and strength were uneasy. Thus, these first,
Regarding the second conventional example, that is, the conventional honeycomb panel 4 having a partially bent bend, problems have been pointed out in terms of rigidity and strength.

In view of the above situation, the present invention has been made to solve the problems in the above-mentioned conventional example.
Use the honeycomb core as the core material in the under-expanded state so that it is further expanded outside the bending target area and compressed inside, and the surface plate is inside or outside the bending target area. By removing at least any one of the above, or at least providing an inner groove with a groove groove,
In addition, a curved surface having a predetermined curvature can be accurately obtained. Secondly, a honeycomb panel having a curved surface, which is excellent in rigidity and strength, is easy and easy to prepare and process, and thirdly, and The purpose is to propose a manufacturing method thereof.

[0009]

The technical means of the present invention for solving such a problem is as follows. First, claim 1 is as follows. That is, this claim 1
A honeycomb panel having a curved surface has surface plates adhered to both inner and outer surfaces of a honeycomb core, which is a core material, and has a partially bent curved surface. Then, the honeycomb core is formed by a spreading method and is in an under-expanded state that does not reach a normal expanded state as a whole, and is further expanded from the under-expanded state on the outside of the bending target portion. Inside the bending target portion, it is compressed from the under-expanded state, the surface plate, at least one of the inside or outside of the bending target portion, is peeled and removed, Is characterized by.

Claim 2 is as follows. That is, the honeycomb panel provided with the bending of claim 2 is
Surface plates are adhered to both inner and outer surfaces of a honeycomb core, which is a core material, and at least partially bent portions are provided. Then, the honeycomb core is formed by a spreading method and is in an under-expanded state that does not reach a normal expanded state as a whole, and is further expanded from the under-expanded state on the outside of the bending target portion. The inside of the bending target portion is compressed from the under-expanded state, and the surface plate is provided with cut groove-shaped streaks for at least the inside of the bending target portion. .

Next, claim 3 is as follows. That is, in the method for manufacturing a honeycomb panel having a bend according to claim 3, first, a honeycomb core that is molded by a spreading method and is in an under-expanded state that does not reach a normal expanded state is prepared. Surface plates are adhered to both inner and outer surfaces of the honeycomb core to form a flat honeycomb panel. Then, with respect to the part to be bent which is partially present in the honeycomb panel, at least one of the inner side and the outer side of the surface plate is peeled and removed, and then the bent part is bent. By bending, the outside of the honeycomb core at the bending target portion is further expanded from the under-expanded state, and the inner side is compressed from the under-expanded state. Therefore, by following such a process, it is possible to obtain a honeycomb panel having a partially bent bend.

Claim 4 is as follows. That is, in the method for manufacturing a honeycomb panel having a bend according to claim 4, first, a honeycomb core that is molded by a spreading method and is in an under-expanded state that does not reach a normal expanded state is prepared. Surface plates are adhered to both inner and outer surfaces of the honeycomb core to form a flat honeycomb panel. At the same time, for at least a part of the bending target portion existing in the honeycomb panel, at least the inside of the surface plate is provided with a groove groove, and then the bending target portion is bent while being bent. As a result, the outside of the honeycomb core at the bending target portion is further expanded from the under-expanded state, and the inner side is compressed from the under-expanded state. Therefore, by following such a process, it is possible to obtain a honeycomb panel having a bend that is bent at least partially.

As described above, in the honeycomb panel provided with the bending and the manufacturing method thereof, first, the honeycomb core as the core material is used in the under-expanded state which is easily deformed, and the bending target portion is used. It is further expanded outside the area and compressed inside the area to be bent.
For the surface plate, peel off and remove at least one of the inside and outside of the bend target area,
At least the inside of the bending target portion is provided with cut groove-shaped streaks. Since this honeycomb panel is composed of such a honeycomb core and a surface plate, the rigidity is reduced at the bending target portion, and bending is performed with a predetermined curvature by bending.

[0014]

DETAILED DESCRIPTION OF THE PREFERRED EMBODIMENTS The present invention will be described below in detail based on an embodiment shown in the drawings. 1, 2, 3, and 4 provide an explanation of an embodiment of the present invention. 1 (1) is a perspective view showing the prepared honeycomb core and surface plate, and FIG. 1 (2) is a perspective view showing a flat honeycomb panel. 2 (1) is a front view of the first example, FIG. 2 (2) is a perspective view of the second example, and FIG. 3 (1) is a perspective view of the third example. 2) FIG. 4 is a perspective view of the fourth example. FIG. 4 (1) is a plan view showing the substantially perforated slits provided on the surface plate, and FIG. 4 (2) is a front view showing the cut groove-shaped streaks provided on the inner surface plate, (3) FIG. 3 is a front view showing the notched groove-shaped streaks provided on the inner and outer surface plates. 6A and 6B are perspective explanatory views for explaining a method of forming a honeycomb core by a spreading method. FIG. 6A is a preparation step, FIG. 2B is a cutting step, and FIG. Steps (4) and (5) show a stacking process and a spreading process, respectively.

First, a method of manufacturing the honeycomb panel 5 having the bend according to the present invention will be described. In this manufacturing method, first, the honeycomb core 1 in the under-expanded state B that does not reach the normal expanded state A is prepared while being molded by the expansion method.

These will be described in more detail. First, the forming method of the honeycomb core 1 by the spreading method will be described with reference to FIG.
Will be described in general. As the base material 6 of the honeycomb core 1, aluminum foil or other metal foil, fiber reinforced plastic sheet (FRP sheet), kraft paper, aramid paper or other special paper, vinyl chloride sheet or other plastic sheet, other organic or inorganic material Various sheet-shaped metals and non-metals such as a composite sheet of a series are used. Then, first, the base material 6 prepared as shown in FIG. 6 (1) is cut into predetermined dimensions as shown in FIG. 6 (2), and at the same time as shown in FIG. 6 (3). As shown in the figure, the adhesive 7 is arranged in a striation form by coating or the like. The adhesive 7 is arranged in parallel to the base material 6 with a predetermined width, pitch and interval.
Then, as shown in FIG. 6 (4), a plurality of such base materials 6 are vertically moved in accordance with the positional relationship in which the arranged adhesives 7 are laterally shifted by half pitch. Stack. Then, by heating and pressurizing to melt and cure the adhesive 7, the stacked base materials 6 are bonded to each other. then,
As shown in FIG. 6 (5), such a block body of the base material 6 is cut into pieces each having a predetermined thickness, and then stretched by applying a tensile force with the upper and lower stacking directions as the stretching direction. Accordingly, the cell wall 8 is formed by the bent base material 6, and the honeycomb core 1 including the planar aggregate of the hollow columnar cells 9 defined by the cell wall 8 is formed.

The honeycomb core 1 is molded by such a spreading method, but in the present invention, the normal spreading state A (see FIG. 6).
In the under-expanded state B, which does not reach (5) in FIG. That is, for example, assuming that the expansion state in which each cell 9 forms a regular hexagon is the normal expansion state A and the expansion rate is 100%, in the under-expansion state B in which each cell 9 has a vertically long hexagonal shape and does not reach the normal expansion state A. The expansion rate is around 40% to 70%. Thus, the honeycomb core 1 in the under-expanded state B as a whole is
Be prepared.

In this manufacturing method, as shown in FIGS. 1 (1) and 2 (2), the face plates 2 and 3 are adhered to both inner and outer surfaces of the honeycomb core 1 in the under-expanded state B. Thus, the flat honeycomb panel 10 is obtained. That is, the inner and outer surface plates 2 and 3 which are skin materials are adhered to the both open end faces of the honeycomb core 1 in the under-expanded state B prepared as described above with an adhesive, respectively, so that the flat honeycomb panel 10 is first prepared. It is said that As the material of the surface plates 2 and 3, various metals and nonmetals are appropriately selected and used according to the honeycomb core 1 described above.

Then, in this manufacturing method, (2) in FIG.
As shown in the figure, this flat honeycomb panel 10
With respect to the bending target portion R that partially exists, at least one of the inner surface plate 2 and the outer surface plate 3 is peeled off and removed. In the illustrated example, the surface plates 2 and 3 on both inner and outer sides of the bending target portion are peeled and removed, but only either the inner surface plate 2 or the outer surface plate 3 may be peeled and removed ( In this case, there is an advantage that the overall strength and rigidity are further improved as compared with the illustrated example). To remove the surface plates 2 and 3 as described above, slits 11 may be provided on both sides of the bending target portion R and the space between the slits 11 may be peeled off. As shown, as the surface plates 2 and 3, those in which perforated slits 11 are formed vertically and horizontally as a whole are used, and the selected slits 11 at the bending target portion R are used.
If the spaces are stripped off, the work is simplified and facilitated.

Then, in this manufacturing method, as shown in FIGS. 2 (1), 2 (2), 3 (1), etc., the bending target portion R is bent and bent. As a result, with respect to the honeycomb core 1 at the bending target portion R, the outside is in the expanded state B from the under-expanded state B, while the inside is in the compressed state D from the under-expanded state B. A honeycomb panel 5 having a partially bent bend is obtained.

That is, as described above, the inner and outer surface plates 2, 3
Regarding the flat honeycomb panel 10 (see FIG. 1) in which the bending target portion R is peeled off and removed, the bending target portion R is bent while being bent inward or outward. As a result, the honeycomb core 1 at the bending target portion R is in a state C in which the outer side is wider and further extended from the under-expanded state B, and the inner side is compressed more narrowly from the under-extended state B. State D
Becomes In this way, the honeycomb panel 5 partially bent at the bending target portion R and provided with the bending is obtained. FIG. 2 (1) shows a first example of the honeycomb panel 5 thus formed into a substantially concave shape,
FIG. 2 (2) shows a second example in which such a honeycomb panel 5 is used, for example, as a stool for a boat, in which 12 is a boat main body and 13 is its frame. Further, FIG. 3 (1) shows a third example in which a box body is formed with such a honeycomb panel 5.

The honeycomb panel 5 manufactured in this manner has surface plates 2 and 3 adhered to both inner and outer surfaces of the honeycomb core 1, which is a core material, and partially bent bends. Then, the honeycomb core 1 is molded by the expansion method, and is in the under-expanded state B that does not reach the normal expanded state A as a whole, and is further expanded from the under-expanded state B outside the bending target portion R. In the state C, the inside of the bent portion R is underexpanded state B.
From the compressed state D. In addition, the target point R
In FIG. 3, at least one of the inner surface plate 2 and the outer surface plate 3, and in the illustrated example, both are peeled off and removed. In consideration of the characteristics of the honeycomb core 1 which is a core material, the honeycomb panel 5 has excellent weight ratio strength, is lightweight, and has high rigidity and strength as well as flatness accuracy, heat retention, heat insulation, sound insulation, and buckling. It is widely used as various structural materials by taking advantage of its excellent shock absorption properties and so on.

The honeycomb panel 5 provided with the bending according to the embodiment of the present invention shown in FIGS. 1, 2 and 3 (1) is configured as described above. Next, the honeycomb panel 5 provided with the bending according to the embodiment of the present invention shown in FIG. 3 (2) will be described. In the honeycomb panel 5 shown in FIG. 3B, the honeycomb panel 5 shown in FIG.
In the honeycomb panel 5 shown in FIG. 1 (1), the inner and outer surface plates 2 and 3 of the bending target portion R were peeled and removed, but instead of the surface plate 2 inside the bending target portion R,
A groove 14 having a groove shape is provided.

The honeycomb panel 5 having the bend shown in FIG. 3B will be described in more detail.
First, the manufacturing method thereof will be described. First, the honeycomb core 1 in the under-expanded state B which is not expanded to the regular expanded state A is prepared by the expansion method, and then both the inner and outer surfaces of the honeycomb core 1 are prepared. The surface plates 2 and 3 are adhered to each other to form a flat honeycomb panel 10 (these points are the same as those described above with reference to FIG. 1).

Along with this, such a honeycomb panel 5
At least part of the bending target portion R of the present invention, at least on the inner surface plate 2, has a groove 14 formed in a groove.
Is provided. In FIG. 3 (2) and FIG. 4 (2),
While an example in which the cut groove-shaped streaks 14 are provided only on the inner surface plate 2 is shown, in FIG. 4C, the cut groove-shaped streaks 14 are formed on the inner and outer surface plates 2 and 3. Is shown. In any case, the streaks 14 are formed in the surface plates 2 and 3 in a direction orthogonal to the cell axis of the honeycomb core 1 which is the core material, and the surface plates 2 and 3 are flexible, that is, easy to deform to a predetermined curvature. For example, a plurality of V-shaped cross sections are formed at each bending target portion R.
Further, in the example shown in FIG. 3B, the honeycomb panel 5
Since it is formed into a bent cylindrical shape as a whole, the bending target portion R is not a part but the whole, and the cut groove-shaped streaks 14 are also provided as a whole. It should be noted that such streaks 14 may be provided in the surface plates 2 and 3 in advance before the surface plates 2 and 3 are bonded to the honeycomb core 1 to form the flat honeycomb panel 10.

Then, in this manufacturing method, the bending target portion R is bent and bent so that the outside of the honeycomb core 1 of the bending target portion R is further extended from the under-expanded state B to the state C. On the other hand, the inside is changed from the under-expanded state B to the compressed state D,
As a result, the honeycomb panel 5 having at least a partially bent portion and a bent portion is obtained (these points are the same as those described above with reference to FIG. 1). Then, by following such a manufacturing process, the honeycomb panel 5 having a desired bend can be obtained. That is, in this honeycomb panel 5, for example, as shown in FIG. 3 (2), the surface plates 2 and 3 are adhered to both inner and outer surfaces of the honeycomb core 1 as a core material,
It comprises a bend that is at least partially bent (in the illustrated example, totally bent). The honeycomb core 1 is formed by a spreading method and is in an under-expanded state B that does not reach the normal expanded state A as a whole, and outside the bent portion R, the honeycomb core 1 is further expanded from the under-expanded state B. State C, and inside the curved portion R, the under-expanded state B becomes a compressed state D,
The inner surface plate 2 is provided with cut groove-shaped streaks 14 for the bending target portion R (in the illustrated example as a whole).

Regarding the honeycomb panel 5 having a bend and the method for manufacturing the same as shown in FIG. 1) Since the honeycomb panel 5 shown in the drawing is similar to the above-mentioned part, its explanation is omitted. Figure 1 (1)
In the figure and (2), reference numeral 15 is an end adhering portion, and at this end adhering portion 15, the starting end and the end of such a honeycomb panel 5 are integrally adhered.

The present invention is configured as described above. Then it becomes as follows. In the honeycomb panel 5 having this bending and the manufacturing method thereof, first,
Regarding the honeycomb core 1 as the core material, the one in the under-expanded state B, which is rich in flexibility and easy to deform Therefore, a state C is further expanded outside the bending target portion R, and a compressed state D is inside the bending target portion R. As for the surface plates 2 and 3, at least one of the surface plate 2 on the inner side and the outer surface plate 3 on the bending target portion R is peeled and removed so as not to hinder the deformation process. Alternatively, at least the surface plate 2 on the inner side of the bending target portion R is provided with cut groove-shaped streaks 14 to impart flexibility, that is, deformability. Therefore, since the bent honeycomb panel 5 is composed of such a honeycomb core 1 and the surface plates 2 and 3, such peeling removal or streak 14 attachment at the bending target portion R is possible. Even if there are other surface plates 2 and 3 that are not used and there is some rigidity, the rigidity is reduced as a whole, and the surface plates 2 and 3 are easily bent with a predetermined curvature by bending.
Now, the honeycomb panel 5 provided with this bending and the manufacturing method thereof are as follows.

First, in the honeycomb panel 5 provided with this bending, the honeycomb core 1 as a core material is in an under-expanded state B.
In the bending target portion R, the inside and outside are compressed and further expanded, and either the surface plate 2 or 3 inside or outside the bending target portion R is peeled off or removed, or at least the inside surface plate 2 has a cut groove. The streaks 14 are provided. Therefore, since the flexure target portion R has flexibility, that is, easiness of deformation processing and rigidity is reduced, the flexure target portion R
However, the honeycomb panel 5 bent accurately with a predetermined curvature
Is obtained.

Secondly, in the honeycomb panel 5 having such a bend, the honeycomb core 1 in the under-expanded state B is prepared, and the surface plates 2 and 3 inside and outside of the bend target portion R are appropriately used. It can be prepared easily and easily and can be bent smoothly by simply peeling it off or providing the inner surface plate 2 with the streaks 14. Furthermore, a special jig is not particularly required for the bending process.

Thirdly, in the honeycomb panel 5 further provided with this bending, the honeycomb core 1 is only compressed and expanded inward and outward at the bending target portion R, and the honeycomb core 1 is buckled or cut. It does not mean that As a result, the honeycomb panel provided with the bending does not have a particular decrease in rigidity and strength at the bending target portion R.

[0032]

As described above, the honeycomb panel provided with the bending and the method for manufacturing the same according to the present invention use the honeycomb core as the core material in the under-expanded state, and the outside of the bending target portion. Then, the surface plate is further expanded and compressed on the inner side, and as for the surface plate, at least one of the inner side and the outer side of the bending target portion is peeled off and removed, or a cut groove is formed on at least the inner side. By providing the streaks, the following effects are exhibited.

First, it is possible to accurately obtain a curvature having a predetermined curvature. That is, in the honeycomb panel provided with the bending, the honeycomb core as a core material is in an under-expanded state in which the deformation processing is relatively easy, and the bending target portion is compressed inward and outward and further expanded, and the bending target portion is At least one of the inner and outer surface plates is peeled off and removed, or at least the inner surface plate is provided with streaks, so that the rigidity at the bending target portion is reduced, and smooth bending is realized. That is, like the conventional example of this kind described above, the rigidity of the honeycomb core and the inner and outer surface plates and the abutting of the cut surfaces do not hinder smooth bending, and the bending target portion is, A honeycomb panel curved with a predetermined curvature is obtained.

Secondly, the preparation and processing are simple and easy, and it does not take time and effort. That is, a honeycomb panel having this bending is prepared by preparing a honeycomb core in an under-expanded state and removing at least one of the inner and outer surface plates of the bending target portion by removing or providing a streak on at least the inner surface plate. By doing so, it can be prepared easily and easily, and it can be bent smoothly at the portion to be bent, and there is no need for troublesome and troublesome work as in the conventional example of this kind described above. Further, as in the above-mentioned conventional example of this kind, a bending jig such as a bevel or a dedicated jig such as a cutting jig such as a circular saw and a band saw may be indispensably prepared and used in bending. I don't need it. Thus, preparation and processing are easy and easy, and a honeycomb panel having this bending can be manufactured without requiring a dedicated jig.

Thirdly, it has excellent rigidity and strength. That is, the honeycomb panel having this bending is, as in the conventional example of this kind described above, the honeycomb core which is the core is not buckled or cut at the bending target portion, and the honeycomb which is the core is used. The core is merely bent, compressed inward and outward, and further expanded at the bending target portion. So, the honeycomb panel with this bend is
Rigidity / strength does not decrease at the bend target area, and it has excellent rigidity / strength. Thus, the effects of the present invention are remarkably large, such as all the problems existing in this type of conventional example are solved all at once.

[Brief description of drawings]

FIG. 1 is a honeycomb panel provided with a bend according to the present invention,
3A and 3B are perspective views for explaining an embodiment of the present invention with respect to a manufacturing method thereof, and FIG. 1A shows a prepared honeycomb core and a surface plate, and FIG. 2B shows a flat honeycomb panel. .

2 is a view for explaining the embodiment of the present invention, FIG. 1 (1) is a front view of the first example, and FIG. 2 (2) is a perspective view of the second example.

3 is a perspective view of a third example thereof, and FIG. 3 (2) is a perspective view of a fourth example thereof for explaining the embodiment of the present invention.

FIG. 4 is a view for explaining the embodiment of the present invention, wherein (1) is a plan view showing a substantially perforated slit provided on the surface plate, and (2) is an inner surface plate. The front view showing the notched groove-like streaks, (3) is a front view showing the notched groove-like streaks provided on the inner and outer surface plates.

[Fig. 5] Fig. 5 is a front view of a main part of a honeycomb panel provided with a bend of a conventional example of this kind, and Fig. 5 (1) is a first example thereof.
FIG. (2) shows a second example, and (3) shows a third example.

[Fig. 6] Fig. 6 is a perspective explanatory view for explaining a method for forming a honeycomb core by a spreading method, and
(2) Figure shows the cutting process, (3) shows the bonding material placement process,
The figure (4) shows the stacking step, and the figure (5) shows the spreading step.

[Explanation of symbols]

 DESCRIPTION OF SYMBOLS 1 Honeycomb core 2 Inner surface plate 3 Outer surface plate 4 Honeycomb panel (conventional example) 5 Honeycomb panel (invention) 6 Base material 7 Adhesive 8 Cell wall 9 Cell 10 Honeycomb panel 11 Slit 12 Boat body 13 frame 14 streak 15 end adhesion part A normal stretched state B under stretched state C further stretched state D compressed state R curved point

Claims (4)

[Claims] 1. A honeycomb panel having surface plates adhered to both inner and outer surfaces of a honeycomb core, which is a core material, and a partially bent bend, wherein the honeycomb core is formed by a spreading method. , Which is an under-expanded state that does not reach the normal expanded state as a whole, is further expanded from the under-expanded state on the outside of the bending target portion, and is compressed from the under-expanded state on the inside of the bending target portion. The surface plate has at least one of an inner side and an outer side removed and removed at the bending target portion, and a honeycomb panel having a bending. 2. A honeycomb panel having surface plates adhered to both inner and outer surfaces of a honeycomb core, which is a core material, and at least partially having bent portions, wherein the honeycomb core is formed by a spreading method. In general, the under-expanded state does not reach the normal expanded state, and the under-expanded state is further expanded on the outside of the bending target area, and the under-expanded state is compressed inside the bending target area. A honeycomb panel having a bend, characterized in that the surface plate is provided with cut groove-shaped lines at least on the inside of the bend target portion. 3. First, while being formed by a spreading method,
After preparing a honeycomb core in an under-expanded state that does not reach the normal expanded state, and then adhering surface plates to both inner and outer surfaces of the honeycomb core to form a flat honeycomb panel, a bent portion partially present in the honeycomb panel is formed. At least one of the inner side and the outer side of the surface plate is peeled off from the target part, and then the bent target part is bent and bent to bend the target part. Regarding the honeycomb core, the outside is further expanded from the under-expanded state, and the inside is compressed from the under-expanded state, so that a honeycomb panel having a partially bent bend is obtained. A method for manufacturing a honeycomb panel having a curved surface. 4. First, while being molded by a spreading method,
An under-expanded honeycomb core that does not reach the normal expansion state is prepared, and then surface plates are adhered to both inner and outer surfaces of the honeycomb core to form a flat honeycomb panel, and at least a part of the honeycomb panel is present. Regarding the bending target location, at least the inside of the surface plate is provided with a groove groove-like streak, and then the bending target location is bent and bent to thereby form the honeycomb core of the bending target location. , A honeycomb panel having an outer side further expanded from the under-expanded state and an inner side compressed from the under-expanded state, thereby obtaining a honeycomb panel having at least partially bent bends. A method for manufacturing a honeycomb panel comprising: