JPH07329223A - Manufacture of honeycomb core - Google Patents

Abstract

PURPOSE:To provide a manufacture of a honeycomb core wherein the honeycomb core whose length is unrestricted is obtained freely and the honeycomb core can correspond reliably to various lengths such as especially a long-sized one or a short one having a specific length to be required at the time of making the honeycomb core into a product and moreover, this is realized continuously, highly precisely and easily without producing waste by a simple constitution. CONSTITUTION:In this manufacture, as for a piled-up block body 3 of a basic material sheets 2 stuck linearly by the first adhesive, after the second adhesive 11 is applied at least to one surface of its top end bottom end faces 10, the piled-up block body 3 is cut into cut blocks 4. Then the cut blocks 4 are piled up continuously each other by arranging cut faces 12 of the cut blocks 4 each flush with each other, they are stuck to each other by the second adhesive 11 and made into a connecting body 13. Then as for the connecting body 13, it is stretched by applying tension to the same gradually in its piling-up direction G and cutting away into appropriate lengths, through which a honeycomb core of a plane aggregate of a hollow pillarlike cells is obtained.

Description

Detailed Description of the Invention

[0001]

BACKGROUND OF THE INVENTION 1. Field of the Invention The present invention relates to a method for manufacturing a honeycomb core. That is, stacking base material sheets, striation bonding,
The present invention relates to a method for manufacturing a honeycomb core obtained by spreading.

[0002]

2. Description of the Related Art FIG. 6 is a schematic perspective view of a method for manufacturing a honeycomb core of this type of conventional example. (1) is a stacking block, (2) is a cutting block, and (3) is a diagram. Is a honeycomb core, and (4) is an exploded perspective view of a honeycomb sandwich panel. FIG. 7 shows a honeycomb sandwich panel, (1) is a schematic perspective view, and (2) is a central longitudinal sectional view thereof. As shown in these drawings, the honeycomb core 1 of this type has been conventionally manufactured by following the following steps. That is, first, an adhesive agent (not shown) is applied to the base material sheet 2 in a fixed direction, width, and pitch in a linear shape, and then a plurality of such base material sheets 2 are applied in half pitches. The stacking blocks 3 are stacked in a shifted positional relationship, and are bonded with the adhesive to form a stacking block body 3 (see (1) of FIG. 6). Then, the stacking block body 3 is sequentially cut in the stacking direction A to form a cutting block 4 (see (2) of FIG. 6), and a tensile force is sequentially applied in the stacking direction A to expand the stacking block 3. By doing so, the honeycomb core 1 which is a planar aggregate of the hollow columnar cells 5 was manufactured (see (3) of FIG. 6). In the figure, B indicates the length of the honeycomb core 1 obtained by expanding in the stacking direction A, and C indicates the thickness.

[0003]

By the way, the following problems have been pointed out in such a conventional example. That is, first, since the conventional honeycomb core 1 of this type is obtained by expanding the cutting block 4 obtained by cutting the stacked block body 3 of the base material sheet 2, the length B of a certain standard is obtained.
There was a difficulty that it was limited to ones. That is, the conventional honeycomb core 1 of this type has
It has been pointed out that the length of each cutting block 4 is restricted to the stacking direction A, and thus the length is limited to the length B of a certain standard, so that a long one or a short one cannot be obtained.

Second, conventionally, such a long honeycomb core 1 or a short honeycomb core 1 is obtained by joining pieces having a certain standard length B for a long time by gluing or cutting them short. Was there. However, since the honeycomb core 1 obtained in this way requires joining and cutting, the manufacturing process and the structure thereof are complicated and time-consuming, and the work is not continuous, and the accuracy is adversely affected. Problems such as a lot of waste were pointed out. For example,
The following problems were pointed out when the honeycomb sandwich panel 6 was commercialized ((4) in FIG. 6).
(See figures and Figure 7). That is, the honeycomb sandwich panel 6 has a structure in which the honeycomb core 1 having the frame material 7 fixed to the peripheral side surface by adhesion or the like is used as the core material, and the surface plates 8 are adhered to the upper and lower end surfaces thereof. As such, it is strictly required to have dimensions such as a constant length D. On the other hand, since the conventional honeycomb core 1 of this kind is limited to the length B of a certain standard as described above, the length D required for the honeycomb sandwich panel 6 as such a product is No match was obtained and it could not be fitted and fixed in the frame member 7 as it was. Therefore, conventionally, in many cases, both end portions of the honeycomb core 1 are cut and removed as the unnecessary material E and discarded, and only the remaining central portion having the length D is used as the core material of the honeycomb sandwich panel 6. I was using it. Therefore, in the honeycomb core 1 as described above, as described above, the manufacturing process and the configuration thereof are complicated, the work cannot be continuously performed due to cutting, and it is pointed out that the accuracy is adversely affected, and the unnecessary material E is also It was pointed out that there were many wastes that occurred.

Except for the problem that the length of the honeycomb core 1 is limited to the length B of a certain standard as described above, the thickness C of the honeycomb core 1 is set to the cutting block 4 from the stacking block body 3. At the time of cutting, by adjusting the cutting thickness in advance (see FIG. 6 (2)), the depth F of the stacking block body 3 can also be determined in advance for the depth F in the direction perpendicular to the length B. By adjusting (Fig. 6 (1), (2),
(3) See FIG. 3), the thickness C and the depth F, respectively, can be easily obtained, and for example, the honeycomb core 1 can be easily fitted and matched with the product honeycomb sandwich panel 6.

In view of such circumstances, the present invention has been made to solve the problems of the above-mentioned conventional example, and the second adhesive is provided on at least one of the upper and lower end surfaces of the stacked block body of the base material sheet. By applying, cutting and adhering each of the cutting blocks applied and cut, firstly, a long and short length can be obtained, and secondly, these are easy, easy and wasteless. It is an object to propose a method for manufacturing a honeycomb core that is realized.

[0007]

The technical means of the present invention for achieving this object are as follows. That is, in this method for manufacturing a honeycomb core, first, a base material sheet is first coated with a first adhesive in a constant direction, width, and pitch in a linear shape, and then a plurality of the base material sheets are attached to the first base material sheet. The adhesives are stacked in a positional relationship shifted by half a pitch, and are bonded by the first adhesive to form a stacked block body. Next, after a second adhesive is applied to at least one of the upper and lower end surfaces of the stacking block body in the stacking direction in a predetermined manner, the stacking block body is sequentially cut in the stacking direction to form a cutting block. To do. Then, each of the cutting blocks is continuously polymerized in a positional relationship in which the cut surfaces are flush with each other, and after being bonded by the second adhesive to form a connected body, the connected body is sequentially arranged in the polymerization direction. By expanding by applying a tensile force, a honeycomb core which is a planar aggregate of hollow columnar cells can be obtained.

[0008]

Since the present invention comprises such means, it operates as follows. In this manufacturing method, the laminated block body of the base material sheet which is striation-bonded with the first adhesive is coated with the second adhesive on at least one of the upper and lower end surfaces, and then cut into each cutting block. Then, the cut blocks are continuously polymerized so that their cut surfaces are flush with each other, and the cut blocks are bonded together with a second adhesive to form a connected body, and then sequentially expanded to obtain a honeycomb core.

Therefore, firstly, since the connecting body in which each cutting block has a substantially endless shape is sequentially expanded, a honeycomb core having a freely variable length can be obtained. Therefore, various lengths required for commercialization can be obtained, and long lengths, particularly extremely long lengths, and short lengths, particularly short predetermined lengths can be freely obtained. Secondly, such a honeycomb core is manufactured with a simple structure in a continuous manner with high precision and easily, and without generating unnecessary materials for disposal.

[0010]

DESCRIPTION OF THE PREFERRED EMBODIMENTS The present invention will be described in detail below based on the embodiments shown in the drawings. 1, FIG. 2, FIG. 3, FIG. 4, and FIG.
1 is used to describe an embodiment of the present invention. In the schematic perspective view of FIG. 1, (1) is a stacking block body, and (2) is a stacking block body to which a second adhesive is applied. The state
The figure (3) shows a cutting block, the figure (4) shows a state in which the cutting blocks are assembled, and the figure (5) shows a connected body.
In the schematic perspective view of FIG. 2, (1) is a state in which one end of the honeycomb core is fixed to the frame, (2) is a state in which the honeycomb core is cut, and (3) is fixed in another frame. The respective states are shown. In the schematic perspective view of FIG. 3, (1) shows the prepared base material sheet, (2) shows the cut base material sheet,
(3) is a state in which the first adhesive is applied to the base material sheet, and (4) is a stacked block body. Figure 4
FIG. 4 is a schematic perspective view showing a coating mode of a second adhesive,
Figure (1) shows one example thereof, and Figure (2) shows another example. Figure 5
In the perspective view of FIG. 1, (1) shows a cutting block, and (2) shows a connected body and a honeycomb core.

In this manufacturing method, first, as shown in FIG. 3, the first adhesive 9 is linearly applied to the base material sheet 2 in a constant direction, width, and pitch, and then a plurality of base materials is applied. Sheet 2
Are stacked on top of each other in a positional relationship in which the first adhesive 9 is shifted by half a pitch, and are bonded by the first adhesive 9 to form the stacked block body 3.

These will be described in detail. (1) in FIG.
As the strip-shaped base material sheet 2 shown in the figure, aluminum foil or other metal foil, aramid paper or other special paper, vinyl chloride sheet or other plastic sheet, fiber reinforced plastic sheet or the like is prepared. Then, as shown in FIG. 3 (2), the prepared base material sheet 2 is cut into a predetermined length, and as shown in FIG. 1 Adhesive 9 is applied linearly in a constant direction along the longitudinal direction and the lateral direction, a constant narrow width, and a constant wide pitch. After that, the base material sheet 2 coated and cut with the first adhesive 9 in this way has the striped first adhesive 9
A plurality of sheets, for example, about 9 sheets are stacked as shown in FIG. 3 (4) while shifting every other sheet to the left and right so as to have a positional relationship in which they are vertically shifted by half a pitch. Then, the first adhesive 9 is melted and hardened by heating and pressurization, and the base material sheets 2 thus stacked are bonded to each other by a striation to obtain the stacked block body 3.

Next, in this manufacturing method, as shown in FIG. 1 and the like, the second adhesive 11 is provided in a predetermined manner on at least one of the upper and lower end surfaces 10 of the stacking block body 3 in the stacking direction A. After coating, the stacking block body 3 is sequentially cut in the stacking direction A to form a cutting block 4. Then, the cutting blocks 4 are continuously polymerized in a positional relationship in which the cutting surfaces 12 are flush with each other, and are bonded with the second adhesive 11 to form the connecting body 13.

These will be described in detail. (1) in FIG.
As shown in the figure, regarding the stacked block body 3 in which the base material sheets 2 are bonded by the striations as described above, the second bonding is performed on at least one of the upper and lower end surfaces 10 as shown in FIG. Agent 11 is applied. The second adhesive 11 is meant in a broad sense, and is not limited to a sachet-based, synthetic rubber-based, hot-melt-based or other adhesive, that is, an adhesive in a narrow sense activated by water, solvent, heat, etc. Widely used double-sided adhesive tape and other sticky adhesives can be used. The second adhesive 11 as described above is applied to at least one surface of the upper and lower end surfaces 10 in whole or in part. The application mode is (2) in FIG. 1 and (2) in FIG. ) Various spots shown in the figure, the striations shown in FIG. 4 (1), and various other modes are conceivable. Then, in this way, the second adhesive 11
The stacking block body 3 coated with is sequentially cut in the stacking direction A for each thickness C, as shown in (3) of FIG. 1 and (1) of FIG.
Each cutting block 4 is as shown in the figure. Thereafter, as shown in FIGS. 1 (4) and 5 (5), the cutting blocks 4 are assembled in a positional relationship in which the cutting surfaces 12 are flush with each other and continuously polymerized. Then, the respective surfaces orthogonal to the cut surface 12 are bonded by heating and pressurizing the applied second adhesive 11 and melt curing, so that the connecting body 13 is obtained.

Thereafter, in this manufacturing method, as shown in FIG. 2 and FIG. 5 (2), a tensile force is sequentially applied to the connecting body 13 in the polymerization direction G to expand the connecting body 13. The honeycomb core 1 which is a planar aggregate of the hollow columnar cells 5 is obtained.

To describe these in detail, the connecting body 13 in which the cutting blocks 4 are continuously polymerized and adhered by the second adhesive 11 is then subjected to the superposing direction G of the cutting blocks 4, that is, the cutting blocks 4. Each base material sheet 2 forming the
The honeycomb core 1 is manufactured by sequentially applying a tensile force in the stacking direction A to expand the honeycomb core 1. In the embodiment shown in FIG. 2, the expanded honeycomb core 1 is sequentially cut in a direction perpendicular to the stacking direction G to have a predetermined length D.

By the way, in the example shown in FIG. 2, the honeycomb core 1 is manufactured while being commercialized as a core material of the honeycomb sandwich panel 6 shown in FIG. That is, in the example shown in FIG.
The tip (right end in the drawing) of the overlapping direction G of 3 is 1 of the frame member
It is fixed to the inside of the side with an adhesive or a tacker. Then, a tensile force is applied in the stacking direction G (to the left in the drawing), and as shown in FIG.
It is extended to. Then, the rear end (the left end in the drawing) is cut at the length D as indicated by the broken line in the drawing to form the honeycomb core 1 as a single body, and as shown in FIG. It is fitted and fixed in the frame member 7 having a square shape. Thereafter, the slightly stretched remaining stretched portion 14 after cutting shown in FIG. 2 (2) and the connecting body 13 following the stretched remaining portion 14 have the tip (the right end in the drawing) of the stretched remaining portion 14 described above. According to the diagram (1) of FIG. 2, the frame member 7 is fixed on one inner side and stretched, and the state shown in the diagram (3) of FIG. 2 is obtained. Then, according to the above, the honeycomb core 1 that is cut and is a single body
At the same time, it is fitted and fixed in the frame member 7. In the example shown in FIG. 2, this is repeated thereafter to sequentially perform the honeycomb core 1
And the frame material 7 is fixed to the peripheral side surface thereof, and as shown in FIG. 7, these are used as core materials, and commercialized as a honeycomb sandwich panel 6 having a structure in which surface plates 8 are adhered to both surfaces thereof. To be done. It is to be noted that, as in the example shown in FIG. 2, the honeycomb core 1 is not fitted and fixed in the frame member 7 while being expanded, but after the honeycomb core 1 is once expanded by a required length D, the frame member is expanded. Of course, it is also possible to insert and fix in the inside of 7.

Now, for example, by following the steps shown in FIG. 2, the honeycomb core 1 is manufactured (see also FIG. 5 (2)). The honeycomb core 1 is composed of a planar aggregate of hollow columnar cells 5 which are divided into independent spaces by cell walls 15 each of which is made of a matrix sheet 2. The cell wall 15 and the cell 5 may have a cross-sectional shape other than the illustrated hexagonal shape, such as a quadrangular shape and various other shapes.
The honeycomb core 1 has an excellent weight ratio strength, is lightweight, has high rigidity and strength, is excellent in rectifying effect, flatness accuracy, heat retaining property, and sound insulating property, and has a large surface area per unit volume. Known for its various characteristics, it is widely used as various structural materials.

The present invention has been described above. Then it becomes as follows. In this manufacturing method, the first
With respect to the stacked block body 3 of the base material sheet 2 which is strut-bonded with the adhesive 9, the second adhesive 11 is applied to at least one of the upper and lower end surfaces 10 of the stacked block body 3, and then the stacked block body 3 is formed.
Is cut into each cutting block 4 ((1) in FIG. 1,
(2), (3) and (1) of FIG. 5). Then, the cutting blocks 4 are continuously polymerized with the cutting surfaces 12 aligned flush with each other, and are bonded with a second adhesive 11 to form a connecting body 13 (see FIGS. 1 (4) and 5 (5)). ), And the honeycomb core 1 is obtained by sequentially expanding the connecting body 13 and cutting it to a required length D, for example (FIGS. 2 and 5).
(See Figure (2)). Then, it becomes the following first and second.

First, since the connecting body 13 in which the respective cutting blocks 4 are continuously polymerized and adhered is successively expanded, and simultaneously cut in the stacking direction A and the stacking direction G, the expansion direction is the same. The honeycomb core 1 having the length D that can be freely shortened or shortened in the direction can be obtained. That is, the obtained honeycomb core 1
6 is restricted by the length of one cutting block 4 in the stacking direction A as in the conventional example of this kind shown in FIG. 6 and is limited to a certain standard. There is no. Therefore, for example, honeycomb cores 1 of various lengths D required when commercializing the honeycomb sandwich panel 6 or the like.
Can be freely obtained, long ones, especially very long ones,
Short ones, especially short ones with a predetermined length, can be freely obtained.

Secondly, and in addition, the second adhesive 1
It is realized by superimposing and adhering each cutting block 4 on which 1 is applied, spreading and cutting. That is, the honeycomb cores 1 having various lengths D described above can be manufactured by a simple process and a simple structure without any trouble, and can be manufactured continuously and with high accuracy. Moreover, unlike the conventional example of this kind shown in FIG. 6 and the like, it is manufactured without generating unnecessary material E to be discarded.

[0022]

As described above, in the method for manufacturing a honeycomb core according to the present invention, each cutting block obtained by applying the second adhesive to at least one of the upper and lower end surfaces of the stacked block body of the base material sheet and cutting the same. By polymerizing, adhering, and spreading, the following effects are exhibited.

First, it is possible to obtain a honeycomb core having a freely variable length. That is, the length of the honeycomb core is not limited to a constant standard as in this type of conventional example, but a long one, particularly an extremely long one, or a short one, particularly a short predetermined length, can be freely used. As a result, the various lengths required for commercialization can be reliably met.

Second, and yet this is easily and easily realized. That is, this honeycomb core is manufactured at a high cost, such as continuous and highly accurate and easy operation without taking time and effort due to a simple process or configuration, and without generating unnecessary waste material that is discarded. . As described above, the effects of the present invention are remarkably large, such as the problems existing in this type of conventional example are eliminated.

[Brief description of drawings]

FIG. 1 is a schematic perspective view for explaining an embodiment of a method for manufacturing a honeycomb core according to the present invention, where (1) is a stacking block body, and (2) is a second bonding to the stacking block body. The state in which the agent is applied is shown in (3) in a cutting block, in (4) in a state in which each cutting block is assembled, and in (5) showing a connected body.

FIG. 2 is a schematic perspective view for explaining the embodiment,
(1) is a state where one end of the honeycomb core is fixed to the frame, (2) is a state where the honeycomb core is cut, (3)
The figures each show a state of being fixed to another frame.

FIG. 3 is a schematic perspective view for explaining the embodiment,
(1) is a prepared base material sheet, (2) is a cut base material sheet, (3) is a state in which the first adhesive is applied to the base material sheet, and (4) is a view. Indicates a stack block body.

FIG. 4 is a schematic perspective view showing an application mode of a second adhesive, which is used in the description of the embodiment, and FIG.
(2) The figure shows another example.

FIG. 5 is a perspective view for explaining the embodiment, (1)
The figure shows a cutting block, and the figure (2) shows a connected body and a honeycomb core.

FIG. 6 is a schematic perspective view showing a method for manufacturing a honeycomb core of a conventional example, where (1) is a stacked block body, (2) is a cutting block, and (3) is a honeycomb core ( 4) FIG. 4 is an exploded perspective view of the honeycomb sandwich panel.

FIG. 7 shows a honeycomb sandwich panel, (1) is a schematic perspective view, and (2) is a central longitudinal sectional view thereof.

[Explanation of symbols]

 1 Honeycomb Core 2 Base Material Sheet 3 Stacked Block Body 4 Cutting Block 5 Cell 6 Honeycomb Sandwich Panel 7 Frame Material 8 Surface Plate 9 First Adhesive 10 Upper and Lower End Surfaces 11 Second Adhesive 12 Cutting Surface 13 Coupling Body 14 Extension Remaining Part 15 Cell wall A Stacking direction B Fixed length C Thickness D Length E Unnecessary material F Depth G Stacking direction

Claims (1)

[Claims] 1. A base material sheet is first coated with a first adhesive in a constant direction, width, and pitch in a linear shape, and then a plurality of the base material sheets are coated with a half pitch of the first adhesive. And stacking them in a positional relationship shifted by each other, and adhering with the first adhesive to form a stacking block body, and then second stacking on at least one of the upper and lower end surfaces of the stacking block body in the stacking direction. After applying the agent in a predetermined manner, the stacking block body is sequentially cut in the stacking direction to form cutting blocks, and then each cutting block is continuously polymerized in a positional relationship in which the cut surfaces are flush with each other. A honeycomb core, which is a planar aggregate of hollow columnar cells, by adhering with the second adhesive to form a connected body, and then expanding the connected body by sequentially applying a tensile force in the polymerization direction. A method of manufacturing a honeycomb core, comprising: