JPS62255132A - Manufacture of honeycomb panel structure - Google Patents

Abstract

(57) [Summary] This bulletin contains application data before electronic filing, so abstract data is not recorded.

Description

Detailed Description of the Invention (Field of Industrial Application) The present invention relates to a method of manufacturing a honeycomb panel structure generally called a so-called expansion method, and particularly to a method of manufacturing a honeycomb panel structure having recesses. cover

(Prior art) The so-called honeycomb panel structure of Sandwich 4Mi, in which face plates are sandwiched and integrated on both sides of a honeycomb core material with a large number of honeycomb-shaped spaces formed inside, has traditionally been lightweight and resistant to bending. Due to its strong resistance to compressive stress, it is widely used in various industrial fields, such as vehicle body materials, aircraft body materials, and construction materials. Generally, the honeycomb core shrine used in this honeycomb panel structure consists of a large number of rectangular core sheets having approximately the same shape, as disclosed in, for example, Japanese Unexamined Patent Publication No. 56-136353. It is formed by dividing a regular hexagonal honeycomb-like space, and the above-mentioned characteristics can be provided by this honeycomb-like space.

(Problems to be Solved by the Invention) By the way, when applying such a honeycomb panel structure as various industrial materials, it is necessary to dispose various parts on the panel surface. .

However, in general, the panel surface of a honeycomb panel structure, including the conventional ones mentioned above, is formed as a flat surface with no unevenness, so various parts etc. protrude from the panel surface, which improves the appearance and makes it difficult to secure space. Undesirable from above. For this reason, recesses are formed by milling at required locations on the honeycomb core material, and the various components mentioned above are housed in the recesses so that they do not protrude from the panel surface.
This method has a problem in that it is difficult to process because it involves milling or the like on a honeycomb core material, that is, after it has been expanded to form a large number of honeycomb-shaped spaces.

There is also a method of partially crushing the concave portions of the honeycomb core material, but with this method, it is difficult to uniformly crush the honeycomb core material in the concave portions, making it impossible to obtain the desired concave shape. There's a problem.

Furthermore, there is also a method of forming the honeycomb core materials for the concave portion and the other portions separately, and connecting these honeycomb core materials using a separately prepared connecting frame member. Since a frame member is required, the weight of the entire honeycomb panel @ structure increases, and the light weight, which is one of the characteristics of the honeycomb panel structure, is impaired.

The present invention has been made in view of this point, and its purpose is to form a concave portion by milling or the like after forming a honeycomb core material having a honeycomb-shaped space by stretching as described above. By forming the recesses at a stage before expansion, milling processing etc. for forming the recesses can be easily performed, and there is no need to crush the honeycomb core material or connect multiple core materials. To easily and reliably obtain a honeycomb panel structure having recesses of desired shapes at required locations without sacrificing weight reduction.

(Means for Solving the Problems) In order to achieve the above object, the solving means of the present invention first prepares a laminate having recesses on the laminate surface. This laminate is made by laminating and bonding a large number of core sheets coated with adhesive at predetermined intervals so that each adhesive coated area is positioned with a certain regularity, and then forming a concave portion, or by forming a concave portion. It is formed by laminating and adhering a large number of formed core sheets in the same manner. Then, the laminate thus formed is expanded to form a honeycomb core material having honeycomb-shaped spaces between core sheets, and then face plates are bonded to both sides of the core material to obtain a honeycomb panel structure. Make it a method.

With the above configuration, in the present invention, recesses are formed in the laminated surface of the laminate formed by laminating and adhering a large number of core sheets, and the recesses are coated with adhesive at predetermined intervals. It is formed by laminating and bonding the above-mentioned core sheets so that each adhesive application part is positioned with a certain regularity, or it is formed by stacking each core sheet at a stage before applying the adhesive. be done. From this, by stretching the laminate from both sides in the sheet stacking direction, a honeycomb core material with desired recesses formed on the laminate surface is formed, and then face plates are bonded to both sides of the core. As a result, a honeycomb panel structure having concave portions can be easily and reliably obtained without sacrificing weight reduction.

(Example) Hereinafter, embodiments of the present invention will be explained based on the drawings.

FIG. 1 shows the manufacturing process in a method for manufacturing a honeycomb panel structure according to an embodiment of the present invention. First, as shown in FIGS. A core sheet laminate 2 is prepared. This laminate 2 is usually formed as follows. That is, for example, a large number of thin aluminum plates (not shown) are coated with adhesive in a line shape at predetermined intervals, and each of the thin plates is coated with adhesive so that each part of the thin plate is positioned with a certain regularity. After adhering them to each other by pressure in a laminated and arranged state, they are cut according to a predetermined Xi method in the arrangement direction of the adhesive-applied parts, thereby forming a large number of rectangular core sheets 3.3... into a prismatic shape. A laminate 2 is formed.

In Fig. 1 (a>, 4, 4, . . . indicate the adhesive applied portions attached to each core seam (~3), and the adhesive applied portions 4 extend in the longitudinal direction of the sheets 3). Three core sheets 3.3 are formed in areas △, △, . The adhesive applicator 4 is arranged so as to correspond to an area A' located midway between the adjacent adhesive applicators 4 and 4 of the other sheets 1 to 3.

The laminate 2 formed in this way is subjected to a milling 7JO process, etc., as shown in FIG. Width-shaped recess 5
After forming the laminate 2, the laminate 2 is stretched in the sheet stacking direction as shown in FIG. 1(d), and the adjacent core sheets 3,
A honeycomb core material 7 having honeycomb-shaped spaces 6, 6°, . Due to this expansion, the recesses 5 of the laminate 2 are elongated in the sheet stacking direction according to the expansion rate, and the honeycomb core material 7
A recessed portion 5- is formed in.

Next, as shown in FIG. 1(e), a recess 8 corresponding to the recess 5' is formed on one side of the honeycomb core material 7 (the upper surface in the facing view).
A flat face plate 9 is joined to the other surface (bottom surface in the figure) via prepreg sheets 10 and 10, and the honeycomb core material 7 is bonded to the face plates 8 and 9 by heat and pressure to form a sandwich structure. A honeycomb panel structure 1 having a concave portion integrated with the honeycomb panel structure 1 is obtained.

In this way, the above example = CCa, the laminate 20 before spreading
Since the recesses 5 are formed on the laminated surface of each layer in the step and the laminate 2 is then expanded, there are methods of forming the recesses after expansion, that is, after forming the honeycomb core trjJ7, a method of crushing the honeycomb core material, or A honeycomb panel structure 1 having a recess 5' having a shape that matches the intended purpose and which can easily form the recess 5 compared to the method of connecting a plurality of core materials.
It is possible to easily and reliably obtain weight reduction without compromising weight.

Moreover, FIG. 2 shows another example, and in this example, the laminate 2 having the concave portions 5 is expanded to form the honeycomb core material 7 in the same manner as in the above example, and then, as shown in FIG. As shown in FIG. 1, prepreg sheets 10 and 10 are arranged on both sides of the core material 7, and a silicone rubber sheet having a semicircular cross section and having a convex shape that can be fitted into the recess 5- of the core material 7. After arranging the rod-shaped bodies 11 in a corresponding manner, both face plates 8 and 9 are attached to the flannel 1.
is brought into contact with both sides of the core +A 7, and then pressure is applied to the front of the honeycomb core material 7 to integrate the face plates 8 and 9 into the honeycomb core material 7. By pulling and handling the rod-shaped body 11, the shape shown in Fig. 2 ( b)
As shown in FIG. 1, a honeycomb panel structure 1 having a concave portion (hollow portion in this case) integrated into a Sanderuch structure is obtained.

Furthermore, FIG. 3 shows another embodiment, and in this embodiment, the third
As shown in Figure (a), first, a laminate 2a having a wide groove-like recess 5a, two laminates 2b having no recess 5a,
2b, and as shown in FIG. 3(b), the laminates 2b and 2b are joined and integrated on both sides of the laminate 2a, and a rectangle elongated in the direction perpendicular to the sheet lamination direction when viewed from above is formed at the center of the upper surface. A laminate 2 having a recess 5 is formed, and then,
The laminate 2 is expanded in the sheet stacking direction to form a honeycomb core material 7 having a substantially square recess 5-a when viewed from above.

Next, as shown in FIG. 3(C), an mI plate 8 with an opening cut out corresponding to the recess 5-a is placed on one side (the two sides in the figure) of the honeycomb core material 7. A flannel face plate 9 is joined to the other surface (lower surface in the figure) via a prepreg sheet (not shown), and a dish-shaped face plate member 12 is fitted into the recess 5'-a. By heating and pressurizing, a honeycomb panel structure 1 having a concave portion in which the honeycomb core material 7 is integrated with the face plates 8 and 12.9 into a non-touch structure is obtained.

Moreover, FIG. 4 shows yet another embodiment. In this embodiment, as shown in FIG. 4(a), the laminate 2 includes three laminates 2a, similar to the third embodiment.

2G and 2d are integrally joined, and the laminate 2a disposed in the middle has a wide groove-like recess 5a as in the above embodiment, and the other laminate 2C12d has a respective orientation. Other narrow groove-like recesses 5b and 5G are formed, respectively.

Then, by expanding the laminate 2, as shown in FIG. 4(b).
), three concave portions 5''a, 5-b, and 5-c form a continuous honeycomb core +A7, and similarly to each of the above embodiments, face plates 8.9 are attached to both sides of the honeycomb-11vJ7 using prepreg sheets. 10, 10 and then heat and pressurize the honeycomb core material 7 to the face plate 8.9.
A honeycomb panel structure 1 having a recess integrated into a 'C'' Zandermanzi structure is obtained.

When applying the honeycomb panel structure 1 obtained in this way to a floor panel of a white chariot, for example, as shown in FIG.
The pipes 14 and 14 connected to the Xilenzer 13 are arranged at 5-c, respectively.

In the above embodiment, a case is shown in which the concave portion is formed after laminating and bonding a large number of sheets, that is, after forming the laminate 2, but the invention is not limited to this, and for example, a large number of core sheets may be formed. . . . Before applying the adhesive to each core sheet 3, recesses are formed in advance, and then the adhesive is applied at predetermined intervals to form each adhesive coating 1.
(A laminate having a concave part on the laminated surface is formed by laminating and adhering so that the i part is positioned with a certain rule and j (1. It is also possible to adopt a method in which the honeycomb panel structure 1 having a diameter is made to have one warp.

Further, core seams 1 to 3 constituting the honeycomb core material 5.
3. . . . is not limited to aluminum, but may also be made of plastic, paper, or other suitable materials depending on the application.

Furthermore, the honeycomb shape does not have to be hexagonal.

(Effects of the Invention) As explained above, according to the present invention, a large number of core seams (i~) coated with adhesive at predetermined intervals can be arranged so that each adhesive-applied portion is positioned with a certain regularity. By laminating and adhering and then forming recesses, or by laminating and adhering a large number of core sheets with recesses in the same manner, a laminate having recesses on the laminated surface is formed, so that there are no recesses after stretching. The recesses can be formed more easily than in the case of the method of forming the recesses, and a honeycomb panel structure having the recesses can be reliably obtained by a simple method without causing collapse of the recess shape or increase in weight.

[Brief explanation of drawings]

Fig. 1 is a manufacturing process diagram showing one embodiment of the present invention, Figs. 2 and 4 are manufacturing process diagrams showing different embodiments, and Fig. 5 is a longitudinal section showing an example of use of a honeycomb panel structure. It is a diagram. DESCRIPTION OF SYMBOLS 1... Honeycomb panel structure, 2... Laminate, 3...
...] Core sheet 4... Adhesive application part, 5... Recessed part, 6... Honeycomb-shaped space, 7... Honeycomb core treetop,
8, 9... Face plate. Patent applicant Mazda Motor Corporation Same as above Sumitomo Light Metal Industries, Ltd. Agent
Public 1) Hiro 3 figure

Claims (1)

[Claims] (1) By laminating and adhering a large number of core sheets coated with adhesive at predetermined intervals so that each adhesive coated part is positioned with a certain regularity, and then forming a concave part, or by forming a concave part. By similarly laminating and bonding a large number of core sheets, a laminate having recesses on the laminated surface is formed, and then the laminate is expanded to form a honeycomb core material having honeycomb-shaped spaces between the core sheets. After that, face plates are joined to both sides of the core material to obtain a honeycomb panel structure.