JP3772943B2 - Multilayer panel joint structure - Google Patents

Description

[0001]
BACKGROUND OF THE INVENTION
The present invention relates to a laminated panel joining structure, and more particularly to a laminated panel joining structure in which a cellular core material is interposed between a pair of surface plates.
[0002]
[Prior art]
In general, laminated panels are widely used for building materials and structural materials such as exterior wall materials and roofing materials for buildings because of their excellent corrosion resistance and light weight. As an example of such a laminated panel, there is known a panel made of a pair of surface plates formed of, for example, an aluminum material and a cellular core material interposed between the surface plates. In this case, the core material and the surface plate are subjected to bonding or brazing treatment with an adhesive. For example, in the case of brazing treatment, a brazing sheet with a brazing material attached to one side is assembled when the laminated panel is assembled. Use as a surface plate or core material, or interpose a brazing material between the surface plate and the core material when assembling the laminated panel, and heat the surface plate and core material assembled in the laminated panel mold in a furnace. Perform brazing process.
[0003]
When forming an outer wall or a roof with the laminated panel formed in this way, manufacturing a single laminated panel according to the size of the outer wall or the roof, especially when the area of the laminated panel increases, It has not been carried out so much for reasons such as a decrease in efficiency, an increase in the size of manufacturing equipment such as the furnace, or difficulty in transportation. Instead, there is a construction method for manufacturing a plurality of laminated panels having appropriate standardized sizes, joining the plurality of laminated panels, and forming a single large panel body to form an outer wall or a roof. It has been adopted.
[0004]
It FIG 8 (a) no example of a structure for joining laminate panels in the above case shown in (c).
[0005]
FIG. 8 (a) is a plan view of the laminated panels a and b in order to join the laminated panels a and b composed of a pair of surface plates c and a cellular core material i interposed between the surface plates c. This is a case where frame members d and e formed of, for example, an aluminum extruded profile are mounted and fixed between the surface plates c at the peripheral edge by brazing or the like. In this case, a fitting groove g is provided on the outer surface of the frame member d in one laminated panel a, and a fitting protrusion f is provided on the outer surface of the frame member e in the other laminated panel b. Has been. The frame members d and e of the laminated panels a and b formed in this way are brought into contact with each other so that the fitting ridge f is inserted into the fitting groove g, and are adhered with an adhesive or the like. Both laminated panels a and b are joined together by a welded portion h by welding along the contact portion.
[0006]
Figure 8 (b) and (c) is a case of joining the laminated panels j to each other not wearing the frame member. In the example of FIG. 8 (b), for example, the laminated panel j is inserted from both sides into a bonding material k formed in an extruded shape made of aluminum and has a substantially horizontal cross section, and bonded with an adhesive or the like. The laminated panels j are joined together by a welded portion l by welding along the peripheral edge portion of the contact surface between the surface plate c and the joining material k. Further, in the example of FIG. 8 (c), the time of the side surfaces of the laminated panel j abuts, while Kutsugae設the bonding material m to be formed by the abutment on the example an aluminum sheet between the surface plate c The laminated panels j are bonded to each other by a welded portion n that is bonded by an adhesive or the like and welded along the peripheral edge portion of the contact surface of the surface plate c and the bonding material m.
[0007]
In these cases, fusion welding such as MIG welding or TIG welding, which is a kind of inert gas arc welding, is generally used for welding work.
[0008]
[Problems to be solved by the invention]
However, in the case of the joining structure as described above, the panels joined by using the frame members d and e or the joining materials k or m to join the laminated panels a and b or the laminated panels j and j together. Since the weight of the whole body increases, the advantage of the laminated panel using the cellular core material that is light weight is impaired, and the panel body is unbalanced because the joint portion of the panel body is heavier than other parts. There was a problem.
[0009]
Further, in the example shown in FIGS. 11B and 11C, since the convex portion is formed on the surface plate c by the joining member k or m, the panel body formed by joining the laminated panels j. There are problems in that the appearance is impaired and the painting work on the surface of the panel body becomes troublesome.
[0010]
The present invention has been made in view of the above circumstances, and it is intended to provide a laminated panel bonding structure capable of forming a panel body having a flat surface and a beautiful appearance while reducing the weight and improving the balance of the panel body. Objective.
[0011]
[Means for Solving the Problems]
In order to achieve the above object, the present invention is configured as follows.
[0012]
The invention according to claim 1 is a bonding structure of laminated panels comprising a pair of surface plates and a cellular core material interposed between the surface plates, and both surface plates at the contact portion of the laminated panels. In between, a bonding material consisting of a pair of surface plates and a cellular core material interposed between these surface plates is interposed, the friction pin of the friction stir welding tool, the bottom surface of the cylindrical body of the tool is the above Pushing until it touches the surface plate of the laminated panel, and moving the tool along the joining direction, the surface plates of the laminated panel and the surface plate of the bonding material are fixed by friction stir welding , It is characterized by that.
[0013]
In this case, it is preferable that the edges of the surface panels of the laminated panel are polymerized, and the surface panels of the laminated panel and the surface plate of the bonding material are fixed to each other by friction stir welding. 2 ).
[0014]
According to the present invention, a bonding material composed of a pair of surface plates and a cellular core material interposed between the surface plates is interposed between both surface plates in the contact portion between the laminated panels. By fixing the material and the both surface plates with the fixing means, the laminated panel can be reliably bonded without increasing the weight of the bonded portion and without losing the overall balance. A beautiful laminated panel joining structure having a relatively flat surface and a smooth appearance can be obtained.
[0015]
Also, by the fixing means is a friction stir welding joint structure beautiful laminated panel junction is relatively smooth appearance is obtained (claim 1). In this case, the edge portions of the surface plates of the laminated panel are polymerized, and by applying friction stir welding to the superposed portion, a force acting in the direction in which the joint portion expands occurs even if the superposed portion is pressed by friction stir welding. In addition, since the deformation of the panels occurring at the time of joining can be prevented, the laminated panels can be joined more firmly (claim 2 ).
[0016]
DETAILED DESCRIPTION OF THE INVENTION
Hereinafter, embodiments of the present invention will be described in detail with reference to the accompanying drawings.
[0017]
First Embodiment FIG. 1 is a schematic perspective view showing a first embodiment of the laminated panel joining structure according to the present invention, and FIG. 2 is an enlarged cross-sectional view of a main part of the first embodiment.
[0018]
The laminated panel 1 to be joined includes a pair of surface plates 2 formed in a thin plate shape with, for example, an aluminum material, and a large number of core materials 3 having a cellular shape, for example, a substantially cylindrical shape, interposed between the surface plates 2. . In this case, the core material 3 is closely arranged between the surface plates 2, and the surface plate 2 and the core material 3 are fixed by, for example, brazing. The core material 3 is made of, for example, an aluminum material in a sheet shape, and a vent hole 3a is formed in at least one place on the side surface of the core material 3 formed in this way. .
[0019]
A bonding material 10 for bonding the laminated panel 1 configured as described above includes, for example, a pair of surface plates 11 formed in a thin plate shape with an aluminum material, and a cell shape interposed between the surface plates 11, for example, It consists of a large number of substantially cylindrical core members 12. In this case, the thickness of the bonding material 10 is slightly smaller than that of the laminated panel 1 so that the bonding material 10 can be inserted between the surface plates 2 of the laminated panel 1. In this case, the core material 12 is closely arranged between the surface plates 11, and the surface plate 11 and the core material 12 are fixed by, for example, brazing. Further, the core material 12 is formed of, for example, an aluminum material in a sheet shape, and a vent hole 12a is formed in at least one place on the side surface of the core material 12 thus formed. .
[0020]
When the surface plate 2 and the core material 3 of the laminated panel 1 are brazed, or when the surface plate 11 and the core material 12 of the bonding material 10 are brazed, the surface of the surface plate 2 or 11 is brazed. When the aluminum clad material with the adhesive attached is used or when the aluminum clad material is not used, a brazing material is sandwiched between the surface plate 2 and the core material 3 or between the surface plate 11 and the core material 3. During the heat treatment, the brazing material is melted and brazed to form an integral body.
[0021]
In this case, it is preferable to use a non-corrosive flux such as KF + AlF3 or KAlF4 + K3AlF6 + K2AlF5.H2O. The vent hole 3a drilled in the core material 3 and the vent hole 12a drilled in the core material 12 escape the air expanded by being heated to about 600 ° C. during the heat treatment, and the core material 3 , 12 is prevented, or expanded air is pushed up the surface plate 2 or 11 to prevent incomplete brazing.
[0022]
A plurality of laminated panels 1 formed as described above are in contact with each other in a state of being arranged on the same plane, and the bonding material 10 is interposed between the surface plates 2 in the contact portion, and a fixing means such as friction stirring The laminated panels 1 are welded (joined) by performing friction stir welding with a welding tool (hereinafter referred to as a tool) 20 (see FIG. 1). In this case, the depth of the bonding may be at least a level at which the surface plates 2 of the adjacent laminated panels 1 can be bonded together (see FIG. 2A). It is preferable in terms of strength to perform friction stir welding with the surface plate 11 (see FIG. 2B). In FIG. 2A, the part subjected to friction stir welding is shown as a joint 4a, and in FIG.
[0023]
Thus, since the joining material 10 also has the same structure as the laminated panel 1, the laminated panel 1 can be joined while reducing the weight of the joining portion. Therefore, it is possible to reduce the weight of the entire panel body formed by joining the plurality of laminated panels 1, and to make the surface smooth and improve the balance of the panel body.
[0024]
Note that the friction stir welding is a joining method in which the joined parts (contact parts) are softened and joined by frictional heat. The tool 20 used for this friction stir welding is composed of, for example, a steel rotatable cylindrical body 22 and a friction pin 21 formed so as to hang from the lower surface side of the cylindrical body 22, The cylinder 22 and the friction pin 21 are connected to driving means (not shown) for rotating. The tip of the friction pin 21 in the tool 20 is pressed against the part to be joined and rotated at a high speed (for example, 1000 to 15000 rpm) to soften the part to be joined. Push in until it touches. Further, in this state, the tool 20 is moved along the joining direction, so that the joined portion is softened by frictional heat with the friction pin 21, the stirring action by the rotation of the friction pin 21 and the cylindrical body 22, and the movement direction The softened part by the pushing action in the reverse direction is welded (fixed), and the joined parts are joined. In addition, in order to effectively stir the softened metal to be joined (aluminum material), a screw-shaped friction stirrer blade (not shown) is formed on the peripheral surface of the friction pin 21.
[0025]
Next, a procedure for joining the laminated panels 1 according to the first embodiment of the present invention will be described with reference to FIGS. 3 is a schematic exploded perspective view showing a state before the bonding material 10 according to the present invention is inserted into the laminated panel 1, and FIG. 4 is a schematic cross-sectional view sequentially showing the bonding process of the laminated panel 1 in the first embodiment. FIG. 3 is a schematic perspective view showing a state in which the joined portion (contact portion) of the laminated panel 1 is joined by friction stir welding.
[0026]
First, in the laminated panel 1 formed as described above, in the core material 3 interposed between the surface plates 2, those in the vicinity of the side surface to be joined are cut out in advance or in the vicinity of the side surface to be joined. The laminated panel 1 is formed in advance so that the core material 3 does not exist (see FIG. 3). Then, about half of the bonding material 10 is inserted into the space from which the core material 3 is cut, and the surface plate 2 of the laminated panel 1 and the surface plate 11 of the bonding material 10 are bonded with an adhesive (not shown) or the like. . Next, the core material 3 is cut out in the same manner as described above, or the laminated panel of the bonding material 10 is formed in a space of another laminated panel 1 formed in advance so that the core material 3 does not exist in the vicinity of the side surfaces to be joined. A portion protruding from 1 is inserted to bring the surface plates 2 into contact with each other, and the surface plate 2 of the laminated panel 1 and the surface plate 11 of the bonding material 10 are bonded with an adhesive (not shown) or the like (FIG. 4A )reference).
[0027]
Thereafter, a tool 20 for friction stir welding is disposed on one side of the contact portion between the laminated panels 1 with both laminated panels 1 fixed with a jig or the like, and the tip of the friction pin 21 is in contact with the above-described contact. The position is adjusted so that one end on the contact portion is pressed. Then, a driving means (not shown) is driven to rotate the cylindrical body 22 and the friction pin 21 at a high speed (for example, 1000 to 15000 rpm), thereby softening the bonded portion. It pushes in until it contacts, and also slides the tool 20 toward the other end side on a contact part in this state (refer FIG.4 (b) and FIG. 5).
[0028]
Thus, after performing friction stir welding along the contact portion on one side and welding (fixing) one side of both laminated panels 1, the tool 20 is moved to the other side and the same processing is performed. Thus (see FIG. 3C), both sides of the contact portion are friction stir welded, and the joining of the laminated panels 1 is completed. In addition, the said joining process is not necessarily performed in this way. For example, two tools 20 may be prepared and both sides of the contact portion may be joined simultaneously, or after joining one side, the tool 20 may be joined. The laminated panels 1 may be reversed with their one side joined together, instead of moving them to the other side.
[0029]
In this way, by joining at least the surface plates 2 of the laminated panel 1 by friction stir welding, the surface of the joint is relatively smooth, and there is a low possibility that a protrusion or the like is generated. A joining structure between the laminated panels 1 that can be easily treated is obtained.
[0030]
Second Embodiment Next, a second embodiment of the present invention will be described. 2nd embodiment is a case where the edge parts of the surface board 2 of the laminated panel 1 are superposed | polymerized in the joining structure of 1st embodiment.
[0031]
In the joined laminated panels 1, the edges of the pair of surface plates 2 in one laminated panel 1 are bent so that the distance between the surface plates 2 is widened. The surface plate 2 of the panel is inserted and the edges of the surface plate 2 in both laminated panels 1 form a superposed portion 2a. Similar to the first embodiment, the overlapping portion 2a is subjected to friction stir welding with the tool 20 having the friction pin 21 formed on the lower surface side of the rotatable cylindrical body 22 to join the two joined panels 1 together (FIG. 6 (a)).
[0032]
In this case, the depth of joining may be one that joins only the superposed surface plates 2 of the laminated panel 1 (see FIG. 6 (b)). It is preferable in terms of strength to perform friction stir welding with the surface plate 11 of the bonding material 10 (see FIG. 6C).
[0033]
By forming the overlapping portion 2a in this manner and performing friction stir welding on the overlapping portion 2a, it is possible to prevent the two laminated panels 1 from moving in the direction of friction stir welding. Bonding can be performed reliably, and bonding can be performed more firmly than in the first embodiment.
[0034]
In addition, since the other part of 2nd embodiment is the same as said 1st embodiment, the same code | symbol is attached | subjected to the same part and the description is abbreviate | omitted.
[0035]
Other Embodiments In each of the above-described embodiments, the case where the core material 3 of the laminated panel 1 and the core material 12 of the bonding material 10 are formed in a cylindrical shape has been described. Any other shape may be used as long as the weight of the laminated panel 1 can be reduced without damaging it. For example, in advance in the trapezoidal wave shape bent it has been made of aluminum material bent plate 3C, may be used as the adhesive to hexagonal cylindrical core material (honeycomb core) 3A with an adhesive or the like (see FIG. 7 (a)) , or an aluminum material made of corrugated sheets 3D formed cross wave shape may be adhered to the core member 3B so as to form a hollow portion between the peaks and valleys of the waveform (see FIG. 7 (b)) .
[0036]
Further, the surface plate 11 of the bonding material 10 may be formed thick, or a metal material harder than an aluminum material may be used. By forming the surface plate 11 in this way, the strength of the laminated panel 1 can be improved.
[0037]
Further, the core material 3 of the laminated panel 1 and the core material 12 of the bonding material 10 may be formed of a metal material other than an aluminum material such as steel, or may be formed of paper. In this case, it is preferable to bond the surface plate 2 and the core material 3 or the surface plate 11 and the core material 12 with an adhesive instead of brazing. Furthermore, a thin plate formed of a metal material other than an aluminum material such as steel may be used as the surface plate 2 of the laminated panel 1. In this case, it is preferable to select a fixing means other than the first or second embodiment.
[0038]
【The invention's effect】
According to the present invention, a bonding material composed of a pair of surface plates and a cellular core material interposed between the surface plates is interposed between both surface plates in the contact portion between the laminated panels. By fixing the material and the both surface plates with the fixing means, the laminated panel can be reliably bonded without increasing the weight of the bonded portion and without losing the overall balance. A beautiful laminated panel joining structure having a relatively flat surface and a smooth appearance can be obtained.
[0039]
Also, by the fixing means is a friction stir welding joint structure beautiful laminated panel junction is relatively smooth appearance is obtained (claim 1). In this case, the edges of the surface panels of the laminated panel are polymerized, and by applying friction stir welding to the superposed portion, a force is exerted in the direction in which the joint expands even if the superposed portion is pressed by friction stir welding. it not, it is possible to prevent the laminated panel is displaced during friction stir welding, it is possible to more firmly bond the laminated panels together (claim 2).
[0040]
Moreover, even when the friction stir welding is used, the deformation of the laminated panel due to the pressing of the contact portion is prevented by interposing the bonding material between both surface plates in the contact portion of the laminated panels. it can.
[Brief description of the drawings]
FIG. 1 is a schematic perspective view showing a first embodiment of a laminated panel joining structure according to the present invention.
FIG. 2 is an enlarged sectional view (a) of a main part of a first embodiment of the present invention and a modification (b) thereof.
FIG. 3 is a schematic exploded perspective view showing a state before the bonding material according to the present invention is inserted into the laminated panel.
FIGS. 4A and 4B are schematic cross-sectional views sequentially showing a laminated panel joining process in the first embodiment of the present invention. FIGS.
FIG. 5 is a schematic perspective view showing a state in which the contact portion of the laminated panel in the first embodiment is friction stir welded.
FIG. 6 is a schematic cross-sectional view (a) showing a second embodiment of the laminated panel bonding structure according to the present invention, an enlarged cross-sectional view (b) thereof, and a modification (c) thereof.
FIG. 7 is a cross-sectional view showing a modification of the core material of the laminated panel according to the present invention.
FIG. 8 is a schematic cross-sectional view showing an example of a conventional laminated panel bonding structure.
[Explanation of symbols]
DESCRIPTION OF SYMBOLS 1 Laminated panel 2 Surface board 2a Superposition | polymerization part 3,3A, 3B Core material 4,4a Joining part 10 Joining material 11 Surface board 12 Core material 20 Tool (adhering means)
21 Friction pin

Claims (2)

In the junction structure between laminated panels consisting of a pair of surface plates and a cellular core material interposed between these surface plates,
Friction of the friction stir welding tool by interposing a bonding material composed of a pair of surface plates and a cellular core material interposed between the surface plates between the surface plates at the contact portion of the laminated panels. The pins are pushed in until the bottom surface of the cylindrical body of the tool is in contact with the surface plate of the laminated panel, and the tool is moved along the joining direction, whereby the surface plates of the laminated panel and the surface plate of the bonding material Are bonded by friction stir welding to form a laminated panel joining structure.   The edges of the surface panels of the laminated panel are polymerized, and the surface panels of the laminated panel and the surface plate of the bonding material in the overlapped part are fixed by friction stir welding. Item 2. A laminated structure of laminated panels according to Item 1.

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