JP3129749B2 - Honeycomb panel reinforcement method - Google Patents

Description

DETAILED DESCRIPTION OF THE INVENTION

[0001]

The present invention relates to a method for reinforcing a honeycomb panel. That is, the present invention relates to a method for reinforcing a honeycomb panel, which reinforces a portion of a honeycomb panel manufactured by attaching a surface plate to both surfaces of a honeycomb core and requiring a reinforcement.

[0002]

2. Description of the Related Art Honeycomb panels have a weak point that they are susceptible to concentrated loads because a honeycomb core forming a core material thereof is formed of a planar aggregate of a large number of hollow columnar cells. There was a drawback that other members could not be firmly attached. Therefore, when the load is concentrated on the honeycomb core or when other members are attached, the portion has generally been reinforced in the past. FIG. 3 is a perspective view for explaining a method of reinforcing the honeycomb panel 1 according to the first conventional example. In the first conventional example, first, as shown in FIG. 3A, the honeycomb core 2 at a location A where reinforcement is required is cut out from the lateral direction, that is, the end face side of the manufactured honeycomb panel 1 with a cutter or the like. Thus, the notch 3 was formed. Next, as shown in FIG. 3 (2), a reinforcing block 4 or the like as an insert member made of aluminum, wood, or the like is inserted into the notch portion 3 as shown in FIG. ) Is filled, the honeycomb panel 1 needs to be reinforced A
Was reinforced. In the figure, reference numeral 5 denotes a surface plate. FIG. 4
FIG. 9 is a perspective view for explaining a method of reinforcing the honeycomb panel 1 according to Conventional Example 2. In the conventional example 2, when the honeycomb panel 1 is manufactured, that is, when the surface plate 5 is attached to the honeycomb core 2, the honeycomb core 2 in the portion A that needs to be reinforced at the same time.
With respect to the above, the portion A where the honeycomb panel 1 needs to be reinforced was formed by forming the notch portion 3 and inserting the reinforcing block 4 or the like, or filling each cell with putty or the like.

[0003]

The following problems have been pointed out in such a conventional example. First,
In the conventional example 1 in which the honeycomb panel 1 is reinforced after being manufactured as shown in FIG. 3 described above, first, the reinforcing work such as forming the cutout portion 3 by cutting the honeycomb core 2 is troublesome. There is a problem that the processing time and processing man-hour for reinforcement are very long. Secondly, as in the example shown in FIG. 3, the location A that needs reinforcement is located at the peripheral end of the honeycomb panel 1, but the location A that needs reinforcement is only at the center of the honeycomb panel 1 ( In FIG. 4), it is difficult to cut out only the central portion from the side, that is, from the end face side, so that it is impossible to reinforce only the central portion, and the use range of the honeycomb panel 1 is narrowed. was there.

Next, in the conventional example 2 shown in FIG. 4 in which reinforcement is performed at the same time as the manufacturing of the honeycomb panel 1, first, unlike the above-described conventional example 1, a portion A that needs reinforcement is the honeycomb panel 1. 3 (see FIG. 3) or only the central portion as in the example shown in FIG. However, in the second conventional example, the reinforcement is performed at the same time when the honeycomb panel 1 is manufactured.
Cannot be dealt with, for example, when it is necessary to attach another member for subsequent use.
Thus, from this aspect, there is a problem that the use range of the honeycomb panel 1 is narrowed. Second, when the notch 3 is formed as described above and the reinforcing block 4 or the like is inserted in the second conventional example, the notch 3 is formed as in the first conventional example. However, it has been pointed out that the reinforcement work such as the above is troublesome, and the processing time and the number of processing steps are extremely long. Third, on the other hand, in the conventional example 2, when the cells are filled with putty or the like as described above, there is no problem of troublesomeness and processing steps as described in the second, but on the other hand, after the honeycomb core 2 When the surface plate 5 is attached to the surface plate 5, there is a problem that the surface plate 5 is likely to have irregularities. In other words, it is very difficult to accurately fill a predetermined amount of putty or the like into each cell at the location A where reinforcement is required, and it is difficult for the surface of the filled putty or the like to become a uniform smooth surface. , The surface plate 5 was likely to have irregularities. As described above, there has been a problem in quality of the honeycomb panel 1.

[0005] In the prior art, such a point was pointed out. The present invention has been made in view of such circumstances, and has been made in order to solve the problems of the above-described conventional example, in which the position interval substantially matches the size of the cells of the honeycomb core, and the number in the longitudinal direction requires reinforcement. The number of cells in the same direction of the honeycomb core at a location is equal to the number of cells in the same direction, and an injection nozzle having an injection hole formed as a pair of two opposing ones is used. By inserting the reinforcing material into the honeycomb core of the panel from the end face side and injecting the reinforcing material at right angles from each injection hole, it is injected into each cell of the honeycomb core located at the place where reinforcement is required, and reinforced. And First, reinforcement work is easy, and
Thirdly, it is possible to reinforce the honeycomb panel at both the peripheral edge portion and the central portion, and thirdly, it is easy to additionally reinforce the honeycomb panel after manufacturing.
Another object of the present invention is to propose a method for reinforcing a honeycomb panel, which hardly causes irregularities on a surface plate.

[0006]

The technical means of the present invention for achieving this object is as follows. That is, this method of reinforcing a honeycomb panel is manufactured by using a honeycomb core composed of a planar aggregate of a large number of hollow columnar cells formed by cell walls as a core material and attaching a surface plate to both surfaces thereof. The present invention relates to a method for reinforcing a panel. More specifically, when a load is concentrated or another member is attached, the honeycomb core of the honeycomb panel is used for a portion which is weak to the concentrated load and cannot be firmly attached to another member and thus needs to be reinforced. To a method of reinforcing. Then, after manufacturing the honeycomb panel, first, an injection nozzle having an injection hole at least at a front end portion at an interval in a longitudinal direction substantially corresponding to a size of a cell of the honeycomb core is inserted from an end face side of the honeycomb core. I do. The injection hole of the injection nozzle is formed as a pair of two opposing holes,
The number in the longitudinal direction coincides with the number of the cells in the longitudinal direction of the portion requiring the reinforcement. Next, a flowable and post-curing reinforcing material is injected from each injection hole of the inserted injection nozzle into each of the cells located at the place where the reinforcement is required, by injecting the reinforcing material at right angles. I do. Thus, the post-cured reinforcing material is used to reinforce the portions that need to be reinforced.

[0007]

The present invention comprises the above means and operates as follows. First, in the method of reinforcing the honeycomb panel, an injection nozzle having a predetermined injection hole is used. That is, in the injection hole of the injection nozzle, the position interval in the longitudinal direction is almost equal to the size of the cell of the honeycomb core, and the number in the longitudinal direction is equal to the number of cells in the longitudinal direction at the location requiring reinforcement. In addition, two opposing pieces are formed as one set. Then, first, the injection nozzle having such a predetermined injection hole is inserted from the lateral direction, that is, the end face side of the honeycomb core of the honeycomb panel that has already been manufactured.
Then, a reinforcing material having fluidity is injected from each injection hole of the inserted injection nozzle at right angles to each of the cells where the reinforcement is required. Reinforce the parts that require reinforcement. By being reinforced in this manner, the weakness of the honeycomb panel, which is weak against a concentrated load, is overcome, and the reinforced honeycomb panel can sufficiently cope with a case where the load is concentrated or another member is attached.

In the method for reinforcing a honeycomb panel according to the present invention,
Since the reinforcement is performed as described above, the following first, second, third, and fourth states are obtained. First, the reinforcement is performed only by inserting the injection nozzle into the honeycomb core and injecting the reinforcing material. Unlike the conventional example of this type, the honeycomb core does not need to be cut out to form a cutout portion. Work is easy.
That is, the processing time for reinforcement of the manufactured honeycomb panel is reduced, and the number of processing steps is also reduced. Second,
Similarly, since the reinforcement is performed by inserting the injection nozzle into the honeycomb core and injecting the reinforcing material, it is possible to freely reinforce whether the location requiring reinforcement is at the peripheral end of the honeycomb panel or only at the center part. is there. That is, the honeycomb panel after the manufacture can be easily reinforced even when the portion requiring reinforcement is only the central portion of the honeycomb panel.
Third, since the reinforcement is similarly performed by inserting the injection nozzle into the honeycomb core and injecting the reinforcing material, if there is a portion requiring additional reinforcement after manufacturing the honeycomb panel, the additional reinforcement is easy. . In other words, it is possible to appropriately cope with a case where it is necessary to attach, for example, another member additionally in the subsequent use. Fourth, since a honeycomb panel is manufactured by attaching a surface plate to a honeycomb core and then reinforcing is performed, a predetermined amount of a reinforcing material is easily injected into each cell at a location requiring reinforcement, and unevenness is formed on the surface plate. Nothing happens. That is, unlike the conventional example of this type, it is not necessary to perform a difficult operation of accurately injecting a predetermined amount of the reinforcing material into each cell of the honeycomb core before the surface plate is attached at the time of manufacturing the honeycomb panel. In the present invention, after manufacturing the honeycomb panel, the reinforcing material is injected into the space already formed by the cells and the surface plate, so that the reinforcing material can be easily filled in each cell exactly by a predetermined amount. Can be. Therefore, unlike the conventional example of this type, the surface plate already bonded to the cell wall forming the cell does not have unevenness.

[0009]

DETAILED DESCRIPTION OF THE PREFERRED EMBODIMENTS The present invention will be described below in detail with reference to the embodiments shown in the drawings. FIG. 1 is a plan cross-sectional view of a honeycomb core 2 for describing an embodiment of the present invention. 2 shows the details thereof, (1) FIG. 2 is a front view of the entire honeycomb panel 1, (2) is a plan view showing the injection nozzle 6, and (3) is an enlarged plan view of a main part of the injection nozzle 6. FIG. This reinforcing method relates to a method for reinforcing a honeycomb panel 1 in which a honeycomb core 2 is used as a core material and a surface plate 5 is attached to both surfaces thereof. The honeycomb core 2 is formed by a planar aggregate of a large number of cells 8 in the form of regular hexagons and other hollow columns formed by the cell walls 7. Characteristics such as high weight ratio strength, flatness accuracy, moldability, and the like are known. The surface plate 5 is attached to both upper and lower surfaces of the cell 8 by using an adhesive or the like.

In this reinforcing method, after manufacturing such a honeycomb panel 1, first, an injection nozzle 6 having injection holes 10 at least at a front end 9 at predetermined intervals corresponding to the size of the cells 8 of the honeycomb core 2. Is inserted from the lateral direction of the honeycomb core 2, that is, from the end face side. The injection nozzle 6 has a base end connected to a supply portion of a reinforcing material 11 described later via a press-fit pump (not shown), and has an injection hole 10 at a distal end portion 9. (Refer to FIG. 2 (3)) is the size of the cell 8, that is, the cell size C
(See FIG. 1). At the same time, the injection holes 10 are formed as a pair of two opposing holes (see FIG. 1), and the number in the longitudinal direction is the same as the number of cells 8 in the same direction at the location A where reinforcement is required. In the illustrated example, three are formed (see FIG. 1). Injection nozzle 6
Of the honeycomb panel 1 (see FIG. 2 (3)).
(See FIG. 2 (1)). Further, in the illustrated example, the tip of the injection nozzle 6 has an acute angle (see FIGS. 2 (2) and 3 (3)), and the opening 12 when inserted into the honeycomb core 2 (FIG. 2 (1)). Although it also functions as a forming member, the tip of the injection nozzle 6 is not formed into an acute angle but is formed into, for example, a convex shape without being limited to the illustrated example, and the opening of the honeycomb core 2 is formed in advance. 12
May be formed by using another opening member, and the injection nozzle 6 having a protruding tip may be inserted from the opening 12 to be subsequently formed.

In this reinforcing method, the reinforcing material 11 having fluidity and being hardened afterward is injected from the injection hole 10 of the injection nozzle 6.
Is injected into each cell 8 of the honeycomb core 2 located at the location A where the reinforcement of the honeycomb panel 1 is required to reinforce the location A. As such a reinforcing material 11, an adhesive, a putty,
A foam material or the like is used.

The present invention has been described above. Therefore, it becomes as follows. In the method of reinforcing the honeycomb panel 1, first, an injection nozzle 6 having a predetermined injection hole 10 is used. That is, in the injection hole 10 of the injection nozzle 6, the position interval B in the longitudinal direction is substantially equal to the size of the cell 8 of the honeycomb core 2, and the number in the longitudinal direction is in the longitudinal direction of the portion A requiring reinforcement. Matches the number of
Further, two opposing members are formed as one set. Then, the injection nozzle 6 having such a predetermined injection hole 10 is provided.
Is inserted from the side of the honeycomb core 2 of the honeycomb panel 1 already manufactured, that is, from the end face side. Then, from each injection hole 10 of the inserted injection nozzle 6, a reinforcing material 11
Is required to be reinforced by injecting at right angles
And a portion A that needs to be reinforced is reinforced by a post-cured reinforcing material 11. The honeycomb panel 1 which is susceptible to concentrated load by being reinforced in this way.
Are overcome, and the reinforced honeycomb panel 1 can sufficiently cope with a case where a load is concentrated or another member is attached. In the illustrated example, two injection nozzles 6
Is used, and the reinforcing material 11 is injected alternately and sequentially into the cells 8 at the points A where reinforcement is required, but of course, without using such an illustrated example, only one injection nozzle 6 is used.
The reinforcing material 11 may be sequentially inserted into each cell 8 at the location A where reinforcement is required, and the reinforcing material 11 may be injected using three or more injection nozzles 6. The reinforcing material 11 may be injected at the same time.

Now, in the method for reinforcing the honeycomb panel 1 according to the present invention, since the reinforcement is performed in this manner, the following first, second, third, and fourth cases are obtained. First, reinforcement is performed only by inserting the injection nozzle 6 into the honeycomb core 2 and injecting the reinforcing material 11, and the honeycomb core 2 is cut out and cut out 3 (FIGS. 4), the reinforcing work is easy for the manufactured honeycomb panel 1. Secondly, the reinforcement is similarly performed by inserting the injection nozzle 6 into the honeycomb core 2 and injecting the reinforcing material 11. Therefore, in the manufactured honeycomb panel 1, the portion A where the reinforcement is required is located at the peripheral end of the honeycomb panel 1. , (See FIG. 3), or only at the center (see FIGS. 1, 4). Third,
Similarly, since reinforcement is performed by inserting the injection nozzle 6 into the honeycomb core 2 and injecting the reinforcing material 11, when a portion A requiring additional reinforcement occurs after the manufacture of the honeycomb panel 1, additional reinforcement is easy. It is.

Fourthly, since the honeycomb panel 1 is manufactured by attaching the surface plate 5 to the honeycomb core 2 and then the honeycomb panel 1 is reinforced, the reinforcing material 11 is applied to each cell 8 at the location A where the reinforcement is required.
Is easily injected in a predetermined amount, and there is almost no occurrence of irregularities on the surface plate 5. That is, as in this type of conventional example, when manufacturing the honeycomb panel 1, a predetermined amount of reinforcing material 11 is added to each cell 8 of the honeycomb core 2 before the surface plate 5 is attached.
It does not require the difficult task of injecting accurately. In the present invention, after the honeycomb panel 1 is manufactured, the reinforcing material 11 is injected into the space already formed by the cells 8 and the surface plate 5. Only accurate filling can be achieved. Thus, the occurrence of irregularities in the surface plate 5 already bonded to the cell wall 7 forming the cell 8 as in the conventional example of this type is reliably prevented.

[0015]

As described above, in the method for reinforcing a honeycomb panel according to the present invention, the position interval substantially matches the size of the cells of the honeycomb core, and the number in the longitudinal direction of the honeycomb core is the same as that of the honeycomb core. The number of cells in the direction is equal to the number of cells, and an injection nozzle having an injection hole formed as a pair of two opposing cells is used, and such an injection nozzle is attached to an end face of a honeycomb core of a honeycomb panel already manufactured. The reinforcing member is inserted from the side and injected in a direction perpendicular to each of the injection holes, whereby the reinforcing material is injected into each cell of the honeycomb core located at a location where reinforcement is required, and is reinforced. Therefore, the following effects are exhibited.

First, the reinforcement work is easy. That is, for the manufactured honeycomb panel, there is no need to cut the honeycomb core or the like, and the processing time for reinforcement is greatly reduced, and the number of processing steps is also significantly reduced. Secondly, it can be freely reinforced at both the peripheral end and the central part. That is,
Regarding the manufactured honeycomb panel, even when the portion requiring reinforcement is only the central part of the honeycomb panel, the honeycomb panel can be easily reinforced and the range of use of the honeycomb panel is expanded.
Third, additional reinforcement after manufacture is also easy. That is,
In the case where a portion requiring additional reinforcement occurs after the manufacture of the honeycomb panel, for example, when it is necessary to additionally attach another member for subsequent use, it is possible to appropriately cope with the problem. The range of use of the panel is expanded. Fourth, there is almost no unevenness on the surface plate. That is, since the reinforcement is performed after the honeycomb panel is manufactured, that is, the reinforcement is performed after attaching the surface plate to the honeycomb core, there is almost no irregularity on the surface plate, and the quality of the honeycomb panel is improved. As described above, there are some remarkable and significant effects exhibited by the present invention, such as all the problems of the conventional example of this kind being eliminated at once.

[Brief description of the drawings]

FIG. 1 is a plan sectional view of a honeycomb core for explaining an embodiment of a method for reinforcing a honeycomb panel according to the present invention.

FIGS. 2A and 2B show details thereof, wherein FIG. 1A is a front view of a honeycomb panel, FIG.
(3) The figure is an enlarged plan view of the main part of the injection nozzle.

FIGS. 3A and 3B are perspective views for explaining a method of reinforcing a honeycomb panel according to Conventional Example 1. FIG. 3A is a perspective view showing a stage in which a honeycomb core is cut off after manufacturing a honeycomb panel, and FIG. , Etc. are shown.

FIG. 4 is a perspective view for explaining a method of reinforcing a honeycomb panel according to Conventional Example 2, showing a honeycomb panel reinforced at the time of manufacturing.

[Explanation of symbols]

 DESCRIPTION OF SYMBOLS 1 Honeycomb panel 2 Honeycomb core 3 Notch 4 Reinforcement block 5 Surface plate 6 Injection nozzle 7 Cell wall 8 Cell 9 Tip 10 Injection hole 11 Reinforcement material 12 Opening A Location requiring reinforcement B Position interval C Cell size D Outside diameter E Thickness

Claims (1)

(57) [Claims] 1. A method for reinforcing a honeycomb panel manufactured by using a honeycomb core composed of a planar aggregate of a large number of hollow columnar cells formed by cell walls as a core material and attaching a surface plate to both surfaces thereof. A method for reinforcing the honeycomb core of the honeycomb panel at a place where the load is concentrated or other members are attached, and where the other members cannot be firmly attached due to the concentrated load and thus need to be reinforced. After the manufacture of the honeycomb panel, first, an injection nozzle having an injection hole at least at a front end portion at an interval in a longitudinal direction substantially corresponding to a size of a cell of the honeycomb core is inserted from an end face side of the honeycomb core. The injection hole of the injection nozzle is formed as a pair of two opposing holes, and the number in the longitudinal direction is equal to the number of the cells in the longitudinal direction of the location requiring reinforcement. Next, from each of the injection holes of the inserted injection nozzle, a reinforcing material having fluidity and post-curing is perpendicularly inserted into each of the cells located at the locations where the reinforcement is required. A method for reinforcing a honeycomb panel, comprising: injecting by injection, and reinforcing a portion requiring the reinforcement by the post-curing reinforcing material.