JP2001012009A - Panel and manufacture thereof - Google Patents

Abstract

PROBLEM TO BE SOLVED: To provide a plurality of extruded shapes of an aluminum alloy which are jointed together strongly and definitely with an adhesive and a manufacturing method for producing such panels. SOLUTION: This panel 20a is formed by jointing together a plurality of extruded shapes 20, 20 of an aluminum alloy having a flat section, an anodic oxide film 2 is formed on the outer surfaces including the surfaces of each of jointing portions 21a, 21b facing each other of the relevant shapes 20, 20, an electrodeposition coating 4 is covered on the film, and an adhesive 28 is adhered between the electrodeposition coatings 4, 4, and the shapes 20, 20 are jointed together.

Description

DETAILED DESCRIPTION OF THE INVENTION

[0001]

BACKGROUND OF THE INVENTION 1. Field of the Invention The present invention relates to a panel formed by joining a plurality of extruded members having a flat cross section made of an aluminum alloy and a method of manufacturing such a panel.

[0002]

2. Description of the Related Art Rain shelters, such as arcades in shopping arcades, walkways, and bus stops, are made of a steel structure covered with a roof plate, or a resin plate on a frame made of extruded aluminum alloy. The fitted one is adopted. However, these require the number of members and man-hours to attach the roof plate and resin plate to the framework of steel frames and profiled materials, and design and construct each shelter subject, which requires a long time and cost from design to completion. There is a problem of needing.

[0003] On the other hand, since the cross-sectional design of extruded aluminum alloy materials is flexible, it is possible to freely design and construct a shelter of any size by joining a plurality of extruded shapes having flat cross sections. Is possible. However, even in this case, the joints of the adjacent extruded profiles are bolted together, for example, by male / female fitting, and silicon caulking is filled along the joints of both profiles for rain. Because of the labor required, the reduction of man-hours and costs was insufficient.

By the way, various studies have been made on joining extruded aluminum alloy members with an adhesive. For example, the inventors have previously described Japanese Patent Application No. 10-2139.
In Patent Application No. 8, a joint structure and a use form of a panel in which extruded aluminum alloy members are joined with an adhesive have been disclosed. According to this, the extruded profile can easily obtain a long panel in the longitudinal direction along the extrusion direction, but on the other hand, the dimension along the width direction is limited, so that the adhesive is applied between the profiles. It is understood that a panel having a large area can be obtained by using the bonding portion.

In addition, Sumitomo Light Metal Technical Report (April 1986,
69-73), a research report on the bonding of aluminum materials has been made under the title of "Aluminum bonding base treatment". This discloses knowledge on the properties of the porous surface generated by anodizing (alumite) treatment and the relationship between the underlying treatment and the adhesive strength. Furthermore, the Aluminum Handbook (published by the Japan Light Metal Association) (1994.7.2)
A similar matter is listed in 5). For example, it is disclosed that an aluminum fabric is exposed by sandpaper or the like, and the aluminum fabric is adhered after a base treatment with trichlorene. These technologies focus on increasing the adhesive strength of the aluminum material. By using the porous surface of the alumite layer to bond, the adhesive strength of the adhesive to the porous part is achieved by the adhesive effect. It was about getting.

When a panel is formed by arranging and bonding a plurality of extruded members made of an aluminum alloy, the following two methods (1) and (2) can be considered for the manufacturing process. (1) Step of extruding the profile with an extruder → bonding process → anodizing process → electrodeposition coating process (2) Process of extruding the profile with an extruder → anodizing process →
Adhesion process → electrodeposition coating process In the methods of (1) and (2), the adhesive is deteriorated by immersing the profile in the anodizing tank or by the solvent during electrodeposition coating. There is a problem that the operation may become difficult depending on the equipment. In addition, in the method (2), since the bonding step is inserted in the middle of the anodizing treatment step and the electrodeposition coating step which are continuously performed on the surface treatment line, there is a problem that the manufacturing process becomes complicated as a whole. . still,
In general, extruded shapes are often used after being subjected to anodizing treatment and then subjected to electrodeposition coating. This is to make the appearance glossy and to prevent dirt from adhering to the surface.

[0007]

SUMMARY OF THE INVENTION The present invention solves the above-mentioned problems in the prior art, and provides a panel capable of strongly and reliably joining a plurality of extruded aluminum alloy members with an adhesive. It is an object to provide a manufacturing method for obtaining the same.

[0008]

Means for Solving the Problems In order to solve the above-mentioned problems, the present inventors have conducted intensive studies and researches and found that an aluminum alloy coated with an anodized film layer and an electrodeposited film layer on the surface thereof. This is obtained by finding that the adhesive strength between extruded profiles is slightly lower than that between profiles on a plain aluminum surface. That is, the panel of the present invention is formed by joining a plurality of extruded profiles made of an aluminum alloy and having a flat cross section, and the anodic oxide film layer is formed on the outer surface including the surfaces of the joints of the profiles facing each other. Is generated, and the electrodeposited coating layer is coated thereon, and the electrodeposited coatings are bonded to each other with an adhesive, so that the shapes are joined to each other. .

According to this, since the adhesive is interposed between the electrodeposition coating layers and the two members are firmly adhered to each other, the same adhesive strength as in the case of the adhesion between the plain aluminum surfaces can be obtained. Can be Therefore, it is possible to form a firmly joined panel using only the adhesive. In addition, since each profile has an anodic oxide film layer formed on the surface and an electrodeposition coating layer further coated thereon, a panel having both high corrosion resistance and high appearance gloss can be obtained. be able to.

[0010] Further, a panel is also provided in which each of the opposed joints of the shaped members has a concave cross-sectional shape and a convex cross-sectional shape which are fitted to each other so that a tearing force or a peeling force does not act on the adhesive. included. In general, among the breaking strengths of the joints due to the adhesive, the tearing force and the peeling force are significantly smaller than the tensile force and the tensile shearing force. However, according to the panel, even if a pair of extruded sections joined receives a tensile load in a direction away from each other, no tearing force or peeling force acts on the joint where the adhesive is located, and the extruded section does not act. There is no breakage at the joint. Rather, to the extent that a break may occur in the middle of any of the extruded profiles in some cases, the above-mentioned joint can be made to have a reliable high strength, and safety can be assured as a structure of the panel . Note that the tearing force refers to the case where the plate materials are overlapped and adhered, and the external force that pulls each plate material in the out-of-plane direction of the adhesion surface with respect to the adhesion surface, and the peeling force is overlapped and adhered. This is an external force that peels off one of the two plate materials in the out-of-plane direction of the bonding surface.

[0011] Furthermore, each of the joints of the shaped members facing each other has a cross-sectional shape that is higher in rigidity than the cross-sectional shape of the other part of the shaped material, so that the tearing force or the peeling force is applied to the joints. Panels that make it difficult to apply force are also included. According to this, for example, as a joint having a high rigid cross-sectional shape of a male / female fitting type, the adhesive is applied along a tensile shear surface in a direction in which the extruded members to be joined are separated from each other. Alternatively, a panel having a large adhesive strength without a peeling force acting thereon can be obtained. On the other hand, when one of the joints of the sections to be joined has a cross-sectional shape having a lower rigidity than the cross-sectional shape of the other part of the section, the tearing force or the peeling force is applied to the joints. Panel, which makes it difficult to act. According to this, before the tensile shearing force acts, one of the bonded sections is deformed at an intermediate portion other than the joint, so that the tearing force or the peeling force acting on the joint (adhesive) is applied. Can be avoided.

Further, the joint portion to be joined by the adhesive is determined by the following formula 3 with respect to the tensile strength W required for the panel.
Panels that satisfy the above are also included.

[0013]

[Expression 3] τ × Σx ≧ W

According to this, it is possible to easily form a panel having a bonding portion having an adhesive strength higher than the tensile strength for separating the sections to be bonded, and to provide a safe panel. . In Equation 3, τ is the tensile shear strength (N / mm ² ) at the joint between the shaped members, Δx is the total value of the length of the bonded portion in the cross section of the joined portion (mm), and W is the joined shape. It shows the tensile strength per unit length (N / mm) required in the direction in which the materials are separated from each other.

Further, a panel is also included in which a joint portion joined by the adhesive satisfies the following expression 4 with respect to the cross-sectional shape of each joined shape member.

[0016]

[Equation 4] σ _0.2 × t ≧ τ × Σx

According to this, even if a pair of extruded sections to be joined receive a tensile load in a direction separating from each other, it is possible to easily and reliably obtain a panel which is hardly broken at the joint where the adhesive is located. it can. Note that in Equation 4, σ _0.2
Is the 0.2% proof stress (N / mm ² ) of the profile itself, and t is the minimum value (mm) of the total values of the thicknesses in cross sections orthogonal to the direction of separation between the profiles excluding the joints, τ indicates the tensile shear strength (N / mm ² ) at the joint between the shaped members, and Δx indicates the total value (mm) of the length of the bonded portion in the cross section of the joint.

The above-mentioned electrodeposition coating layer may be formed by coating the anodic oxide layer on the shape material, washing with hot water, and electrodeposition coating an acrylic resin, followed by baking treatment. included. Thereby, the electrodeposition coating layer is formed on the unsealed anodic oxide coating layer, so that the coating layer can be firmly covered. Therefore, it is possible to obtain a panel in which the tensile shear strength and the like of the adhesive for joining the profile members are almost the same as those of the aluminum base. In addition, a panel is also included in which the adhesive is a two-part cold-setting adhesive made of an epoxy or acrylic resin. According to this, it is possible to reliably impart the above-described tensile strength between the joints of the extruded members joined by the adhesive.

On the other hand, the method for manufacturing a panel according to the present invention is a method for manufacturing a panel by joining a plurality of extruded profiles made of an aluminum alloy and having a flat cross section. Anodizing step of forming a coating layer, electrodeposition coating step of coating an electrodeposition coating layer on the surface of the anodic oxide coating layer in the profile, and electrodeposition coating on a surface of a joint portion of the profiles facing each other An adhesive step of applying an adhesive between the film layers, bringing the shaped members into close contact with each other, and then curing the adhesive. According to this, the adhesive applied between the adjacent extruded profiles is not affected by the anodizing treatment and the electrodeposition coating, and the shear strength and the like substantially equal to those in the case of bonding between plain aluminum surfaces can be obtained. Therefore, it is possible to reliably manufacture a panel in which a plurality of extruded profiles are firmly joined only by an adhesive. In addition, excellent corrosion resistance and appearance gloss can be obtained, and the adhesive does not deteriorate when it comes into contact with an anodizing treatment solution or a solvent for electrodeposition coating as before, so it is possible to reliably obtain the required adhesive strength. Becomes

[0020] The electrodeposition coating step also includes a panel manufacturing method which is performed after the anodic oxide film layer generated in the anodizing step is washed with hot water. According to this, the electrodeposition coating layer is firmly adhered to the unsealed anodic oxide coating layer, so that even if a tensile shearing force acts between the joined extruded profiles, the coating layer and the coating layer are not It is possible to reliably prevent shear fracture between the two. Thus, high tensile shear strength can be provided between the extruded profiles in the panel.

[0021]

Preferred embodiments of the present invention will be described below with reference to the drawings. FIG. 1A shows the state of a tensile test performed to obtain the panel of the present invention. First,
JIS K6 from aluminum alloy (A6063-T5)
850 "Testing method for tensile shear adhesive strength of adhesive"
A pair of plate pieces (length 100 mm x width 25 mm x plate thickness 1.5 mm) 1
a and 1b were prepared. As shown in FIG. 1 (A), a two-part epoxy adhesive (trade name: Araldite (resin: Aw106, curing agent: HV953U) of Nagase Ciba) is applied to the adhesive surface 6 having a length of 12.5 mm in the left-right direction. 8 were applied and the plate pieces 1a and 1b were bonded. The plate pieces 1a and 1b have an average thickness of 5 μm on their surfaces.
And an electrodeposition coating layer 4 made of an acrylic resin and having an average thickness of 10 μm.
This electrodeposited coating layer 4 is coated in an unsealed state in which the coating layer 2 has been formed and washed with hot water, and baked at 180 ° C. for 30 minutes.

The adhesive surfaces 6, 6 of the plate pieces 1a, 1b of the present invention to which the adhesive 8 is applied are degreased with acetone, and then the thickness of the adhesive 8 is reduced between the adhesive surfaces 6, 6. In order to make it constant, a pair of steel wires having a wire diameter of 0.1 mm were inserted in parallel and the adhesive 8 was applied. The curing condition of the adhesive 8 is 3 at normal temperature.
Days. On the other hand, the plate piece of Comparative Example 1 having the same material and size as the plate pieces 1a and 1b has a surface without the coating layer 2 or the coating layer 4 made of aluminum base,
After previously finishing and polishing the bonding surface 6 with 240 mesh sandpaper, the bonding agent 8 was applied and bonded under the same conditions as above. Further, the plate piece of Comparative Example 2 having the same material and size as the above-mentioned plate pieces 1a and 1b was coated with only the oxide film layer 2 on its surface and washed with hot water in an unsealed state. The adhesive 8 was applied and adhered under the conditions. With respect to each plate (1a, 1b) of the invention examples and the comparative examples 1 and 2 of five sets, the tensile shear strength test method of the adhesive (JIS K6850-199)
Based on 4), the test was performed at a pulling speed of 2 mm / min along the direction of the arrow in FIG. The results are shown in Table 1.

[0023]

[Table 1]

The results in Table 1 were tensile shear strengths in the order of "Comparative Example 2> Comparative Example 1> Inventive Example", but were substantially the same. That is, although the adhesive force according to the invention example does not achieve the maximum strength, it has been found that a panel having practical adhesive strength can be obtained by using a predetermined adhesive area. In addition, various adhesive strengths were measured using test pieces that were adhered by the same method and under the same conditions using the same plate pieces as those of the invention examples. Table 2 shows the results. In addition, the tensile strength in Table 2 used the square-bar tensile test piece based on "Test method of tensile strength of adhesive / JIS K6849-1994". The tensile shear strength was obtained by the test method shown in Table 1 above. Both tests were performed on five sets of test specimens.

[0025]

[Table 2]

The results in Table 2 show that "tensile strength> tensile shear strength"
Turned out to be. Table 2 shows the results of the tear strength.
Although it is not shown, it is already known that it is about 10% of the tensile shear strength and is torn or peeled off by a considerably small external force. FIG. 1B shows a state in which a pair of extruded members 10a and 10b made of an aluminum alloy (A6063-T5) are bonded based on the above test results. The profiles 10a and 10b have a flat cross section and a rectangular hollow portion 12 built therein. The anodic oxide coating layer 2 has a thickness of 5 μm and the electrodeposition coating film 4 has an average thickness of 10 μm. As shown in FIG. 1 (B), an adhesive surface of any of the profiles 10 which has been degreased with acetone in advance.
(14, 15, 16) is coated with a two-part epoxy adhesive 18 similar to the adhesive 8 and degreased in the same manner.
0 is point-symmetrical as shown in the figure, and then bonded.

By the way, in FIG. 1 (B), among the adhesive 18 which is fixed and hardened in a substantially Z-shaped cross section, the profiles 10a, 1
Tensile shear strength that substantially resists the tensile forces separating Ob from each other is provided by a horizontal portion 18a sandwiched between horizontal surfaces 15. As shown in Table 2, the tensile strength (W) is larger at the bonded portion than at the tensile shear strength (τ). In other words, if the adhesive 18 provides an adhesive strength equivalent to the tensile shear strength with respect to the required tensile strength, it means that a higher tensile strength is always obtained. Strength will be obtained. Therefore, in FIG. 1B, the total value (Σx (mm)) of the length of the illustrated horizontal portion 18a and the length of the pair of vertical portions 18b of the adhesive 18 and the joint value of the joints 10a and 10b are obtained. Tensile shear strength (τ (N
/ Mm ² )), the tensile strength (W (N / mm)) per unit length along the depth direction of the paper in FIG. If more than
It is understood that there is no problem.

[0028]

[Expression 5] τ × Σx ≧ W

Further, in FIG. 1B, the profiles 10a, 1
0b, the total thickness of the cross section at the intermediate portion (t (m
m)) and the 0.2% proof stress (σ _0.2 (N /
product of mm ^2)), as shown in Equation 6 below, the tensile shear strength ^{(τ (N / mm 2)} ) and the horizontal portion 18a and the sum of the lengths of the vertical portion 18b (? x (mm It can be understood that a value equal to or greater than the product of ()) has a more sufficient adhesive strength.

[0030]

[Formula 6] σ _0.2 × t ≧ τ × Σx

On the other hand, as shown in FIG. 1B, when the thickness of the bonding portion E1 of the left profile 10a is small, the bonding portion E1 is deformed by the tensile force W applied to the intermediate portion E0 of the profile 10a. Then, in the drawing, a tearing force H in the direction of the arrow is applied to the bonding portion.
Since the adhesive strength against the tearing force H is low as described above, there is a problem that the adhesive 18 starts to peel off from the upper end portion thereof and propagates to the entire adhesive portion to cause breakage. That is, it is not a sectional shape in which the tearing force H is apt to act like the shaped materials 10a and 10b, but a joint having a concave sectional shape and a convex sectional shape in which male and female are fitted to each other. It is necessary to have a cross-sectional shape with higher rigidity.

FIG. 2A shows a panel 20a in which extruded members 20, 20 having such joints 21a, 21b at both left and right ends are joined. FIG. 2A shows a cross section cut in a direction perpendicular to the extrusion direction of each section 20. The shape member 20 is made of the same aluminum alloy as described above, has a hollow section 22 having a flat section and a substantially rectangular shape, and a male joint section 21a having a convex section having a convex section 24 at the center of the right end face 23. And a concave female joint 21b having a concave cross-sectional shape having a concave portion 26 between a pair of upper and lower convex ridges 27 on the left end surface. As shown in FIG. 2A, the end faces 23 of the joints 21a and 21b abut on the ridges 27, and the ridges 24 and the recesses 26 are male-female-fitted.

As shown in FIG. 2A, these entire surfaces are previously coated with an anodic oxide coating layer 2 having an average thickness of 5 μm and an electrodeposition coating layer 4 having an average thickness of 10 μm. After the joints 21a and 21b of the adjacent profiles 20 and 20 are degreased with acetone in advance, as shown in FIG. 2 (A), a two-part epoxy adhesive 28 similar to the adhesive 8 is applied to any one of the adhesives. After being applied to the joint, the other profile 20 is brought into contact with the end face 23 and the ridge 27 as shown in the figure, and the projection 24 and the recess 26 are bonded by male and female fitting. In addition, the joining parts 21a and 21b
The thickness of each part in is set to about 2 to 5 times the thickness of the intermediate part, and the joints 21a and 21b have a cross-sectional shape that is higher in rigidity than the intermediate part.

In FIG. 2A, the adhesive 28 receives a tensile force W for separating the profiles 20, 20 from side to side at a length (Σx) spanning the entire cross section calculated by the following equation (7). . That is, as shown in Equation 5, the total length of the bonded portion (Σx)
Is multiplied by the tensile shear strength (τ) (τ × Σx) is the tensile force (W)
As described above, since the tensile strength per unit length of the bonded portion is larger than the tensile shear strength as described above, the required bonding strength (W) or more can be obtained.

[0035]

７x = 2 × (x ₁ ) + 2 × (x ₂ ) + x ₃

Further, as shown in the above-mentioned equation (6), the shape members 20, 2
The product of the thickness (t = t / 2 × 2) of the intermediate part of the zero and the 0.2% proof stress (σ _0.2 ) of the shape members 20 and 20 itself is the total length of the bonding part (接着).
If the value is equal to or more than the product (τ × Σx) of x) and its tensile shear strength (τ), the required bonding strength can be reliably obtained. Moreover, the joints 21a, 21b to which the profiles 20, 20 are adhered.
Are thicker than the other parts in which the hollow part 22 is provided, so that they have a highly rigid cross-sectional shape and
Due to the female fitting, the tearing force H and the peeling force do not act. Therefore, a panel having a stable bonding strength can be obtained by designing in advance so as to hold at least the value (τ × Σx) calculated by the formula (6).

Here, a method of manufacturing the panel 20a will be described. As shown in FIG. 2B, the profile 20 is first extruded using an extruder (not shown). The cross section of the profile 20 is
The web 25 is designed in advance so as to satisfy the conditions of the above formulas 5 and 6, and a web 25 for dividing the hollow portion 22 into two is integrally provided at the center of the hollow portion 22 as necessary. Next, after cutting the shape member 20 into a length corresponding to the panel 20a,
Anodizing treatment is performed. Shaped materials 20 and 2 whose surfaces have been degreased in advance
3 is immersed in a processing solution in a processing tank while being supported by an electrode (not shown), and an anodic oxide film layer 2 is formed on the surface of the profile 20 by a known method, as shown in FIG. Such a coating layer 2
Has a thickness of about 5 to 20 μm. The shaped material 20 taken out of the treatment tank is washed with hot water of about 80 ° C. so that many pores on the surface of the oxide film layer 2 are not completely sealed. Further, the shaped member 20 is supported by another electrode, immersed in an electrodeposition solution of an acrylic resin paint in an electrodeposition treatment tank (not shown), and subjected to electrodeposition (electric permanent movement) coating by a known method. As a result, as shown in FIG. 3B, the entire surface of the coating layer 2 of the profile 20 is coated with the electrodeposition coating layer 4 made of an acrylic resin and having a thickness of about 10 μm. Finally,
The shape member 20 is heated at about 160 to 190 ° C. for about 30 minutes to perform a baking treatment, so that the coating layer 4 is hardened and stabilized.
In addition, the anodic oxide coating layer 2 and the electrodeposition coating layer 4 are treated in a continuous surface treatment line.

After the plurality of shaped members 20 having the oxide film layer 2 and the electrodeposition coating layer 4 are degreased with acetone as described above, they are adjacent to each other so that the joint portions 21a and 21b face each other. Adhesive 28 on any of the joints 21a and 21b.
Is applied. The adhesive 28 is a two-part cold-setting adhesive made of an epoxy or acrylic resin. The joints 21a, 21b of the adjacent profiles 20, 20 are bonded with an adhesive 28.
With the male and female fitted and joined via
0 is fixed by an appropriate holding jig so that the thickness of the adhesive 28 becomes appropriate. The fixed state is maintained for about two or three days, and the adhesive 28 is cured to stabilize the adhesive force. As a result, as shown in FIG. 2A, it is possible to obtain the panel 20a in which the plurality of shaped members 20 are joined by the adhesive 28.

FIG. 4A shows an extruded profile 30 of a different form. The shape member 30 is also made of the same aluminum alloy as described above, and has a hollow section 32 having a flat section and a substantially rectangular shape, and a male joint section 31 having a convex section 34 having a trapezoidal section in the center of the right end face 33. On the left end surface, there are ridges 37, 37 having a substantially trapezoidal cross section and vertically symmetrical, and a female joint 35 having a concave portion 36 with a trapezoidal cross section located therebetween. As shown in the figure, the convex portion 34 and the concave portion 36 of the joining portions 31 and 35 can be male-femalely fitted. As shown in FIG. 4 (a), the entire surface was previously coated with an anodic oxide coating layer 2 having an average thickness of 5 μm and an electrodeposition coating layer 4 having an average thickness of 10 μm by the above-described method. Have been. Also, the joints 31, 35
Are thicker than the middle part, and have a high rigidity cross section.

FIG. 4B shows a cross section of a panel 30a obtained by joining the profiles 30,30. Adjacent profiles 30,3
After the joints 31 and 35 at 0 are degreased with acetone in advance, as shown in FIG. 4B, a two-part epoxy adhesive 38 similar to the adhesive 8 is applied to any of the joints. As shown in the drawing, the end face 33 and the protruding ridge 37 abut on each other, and the convex portion 34 and the concave portion 36 are bonded to each other by male and female fitting and are cured. Thus, the panel 30a in which the plurality of shaped members 30 are joined by the adhesive 38 can be obtained. Note that the total length Δx of the bonded portion is calculated from the total value of two x ₂ , one x ₃ , and two x _{4 shown} in FIG.

FIG. 5A shows a cross section of the joining portions 41 and 45 of the extruded profile 40 having different shapes. The shape member 40 is also made of the same aluminum alloy as described above, and includes a hollow portion 40a having a substantially rectangular cross section as shown in FIG. At the right end of the profile 40, there is a concave groove 43 having a triangular cross section at the center of the end face, and ridges 42, 42 having a triangular cross section protruding in parallel with the upper and lower sides thereof. Joint 41 having
Is provided. At the left end of the profile 40, a ridge 46 having a triangular cross section at the center of the end face, concave grooves 47, 47 having upper and lower triangular cross sections and being parallel to each other, and a bent portion 48 vertically connected thereto are provided. A joint portion 45 having a pair of flanges 49, 49 protruding in parallel with the outer side surface is provided. As shown in FIG. 5A, the surface of the profile 40 is previously coated with the anodic oxide coating layer 2 and the electrodeposition coating layer 4 in the same manner as described above.

Joints 41 and 45 in a plurality of shaped members 40
Then, as shown in FIG. 5A, the same adhesive S as described above is applied to the joint 41. Next, as shown in FIG. 5B, the joints 41, 45 of the profiles 40, 40 are joined.
That is, the ridge 46 is fitted in the groove 43, the ridge 42 is fitted in each groove 47, and the flange 4 is
9 is located. In addition, between the joining portions 41 and 45, the right and left profile members 4 are provided at appropriate intervals via the adhesive S by the contact of the profile members 40 and 40 at the K portion in FIG.
0, 40 are joined. This makes it possible to form a panel including a plurality of profiles 40. FIG.
As shown in (B), the groove 4 is provided between the joints 41 and 45.
3, a gap F having a required cross-sectional area is located between the bottom of each groove 47 and the tip of the ridge 42, and between each ridge 42 and the bent portion 48. Then, the excess adhesive S is received. Further, as shown in FIG. 5B, the total length of the adhesive S between the joints 41 and 45 is used as Δx in Expressions 5 and 6. However, in the portion of the gap F in FIG. 5B, the thickness of the adhesive S is larger than an appropriate value, so the length Δx is calculated excluding the portion of the gap F.

FIG. 6A exemplifies the entire cross section of the extruded profile 40. That is, the shape member 40 has the joint portions 41 and 4 at both ends.
5 and a pair of curved pieces 40b and 40c which are curved in parallel with each other, and a flat hollow portion 40a sandwiched therebetween, as shown in FIG. Has an anodic oxide coating layer 2 and an electrodeposition coating layer 4. As shown in FIG.
The 40 joints 41 and 45 are sequentially joined. As a result, as shown in FIG. 4C, it is possible to form a panel 40d in which a plurality of profiles 40 are joined. This panel 40
As shown in the figure, d forms a curved surface with a continuous curve, so that it can be used as a roof unit such as a shelter for protecting pedestrians from rainwater in front of a station or a shopping street.

The present invention is not limited to the embodiments described above. 2 shown in FIGS. 2 to 6
Although the cross-sectional shapes of the joining portions 21a and 21b and the like are higher in rigidity than those of the intermediate portion, 0, 30, 40, for example, by using the extruded profile 50 shown in FIG.
The panel 50a in which the tearing force H in the out-of-plane direction with respect to the bonding surface shown in FIG. 1B does not act can be obtained.
As shown in FIG. 7A, the shape member 50 is made of the same aluminum alloy as described above, has a rectangular hollow portion 51 having a flat cross section, and projects from a thick end wall 53 at the right end in the drawing. It has a joint portion 52 composed of a pair of thin and parallel convex ridges 54, 54. Further, at the left end, there is provided a joint portion 55 composed of concave grooves 56, 56 located above and below a central convex portion 57 between the end walls 58, 58. A joint 55 composed of a pair of grooves 56
Is thicker than the middle part of the profile 50. FIG.
As shown in (a), the surface of the profile 50 is previously coated with the anodic oxide coating layer 2 and the electrodeposition coating layer 4.

As shown in FIG. 7 (A), the joining portions 52 and 55 are joined with an adhesive 59 in the same manner as described above to obtain a panel 50a. And since each ridge 54 is the thinnest, and has a cross-sectional shape less rigid than the other parts of the profile 50,
The tearing force H and the peeling force in the direction of the arrow shown in FIG. That is, since the extruded profile forming the panel of the present invention is less likely to exert a tearing force H or the like when bonded at the joint, the cross-sectional shape of the joint is more concave and convex than the other parts. A shape or a flexible cross-sectional shape in which the main body of one of the profiles is deformed before the tearing force H or the like acts on one of the profiles can be used.

Further, the joining portions 41 and 4 illustrated in FIG.
In place of the curved pieces 40b and 40c between 5, the extruded shape having a pair of bent pieces that are parallel to each other and bent into a substantially rectangular shape in cross section is used, and a zigzag shape in which the bent pieces of adjacent shapes are continuous. As shown in the figure, it is also possible to form a panel having a zigzag shape in a cross section joined through the adhesive S. Alternatively, an extruded shape having a pair of bent pieces bent into a substantially rectangular cross section at the center serving as a ridge portion is used, and a plurality of shaped materials having straight side pieces between the joints 41 and 45 are provided on both sides thereof. By joining via S, it is also possible to form a roof panel whose cross section has a substantially rectangular shape. Of course, a side piece having an arbitrary cross-sectional shape can be arranged between the joints 41 and 45, and a part thereof is
It is also possible to use a profile in which the side pieces are located only on one side without Oa.

[0047]

FIG. 7B shows a specific embodiment of the present invention.
This will be described with reference to the panel 60 of FIG. As shown in FIG.
The extruded member 61 forming the panel 60 is made of an aluminum alloy (JIS: A6063) and has been subjected to a T5 heat treatment. The shape member 61 has a rectangular hollow portion 62 with a flat cross section.
And an end wall 65 at the right end thereof and an elongated ridge 64 at the center thereof.
And a female joint 66 having a concave cross section having an end wall 67 at the left end and an elongated concave groove 68 at the center thereof. In FIG. 7B, the overall width of the profile 61 in the left-right direction is 270 mm, and the thickness T in the vertical direction is T.
Is 25 mm, the thickness t of the middle part is 2.5 mm, and each joint 6
The plate thickness of 3, 66 is 6 mm, and the length L in the left-right direction of each inclined surface of the ridge 64 and the concave groove 68 is 20 mm. Further 0.2% proof stress of the profile 61 is 145N / mm ^2, the tensile strength is 190 N / mm ² in the actual measurement value.

After extruding the profile 61, an anodic oxide film layer 2 having an average film thickness of 7 μm was formed by sulfuric acid anodic oxidation treatment and washed with hot water at about 80 ° C. The profile 61 having the unsealed coating layer 2 was subjected to electrodeposition coating using an acrylic thermosetting resin, and an electrodeposition coating layer 4 having an average film thickness of 10 μm was coated on the coating layer 2. After about 160 ℃ ~ 1
A baking treatment of heating at 90 ° C. for 30 minutes was performed to cure the coating layer 4. The profile 61 having the coating layer 2 and the coating layer 4 was cut into 10 pieces with a length of 50 mm along the extrusion direction (the depth direction in the drawing) shown in FIG. 7B. After degreasing the joints 63 and 66 of each profile 61 with acetone, a two-part epoxy adhesive (trade name: Araldite (resin:
Aw106, curing agent: HV953U)) 69 was applied, and FIG.
As shown in (B), the pair of shaped members 61 are joined to the joining portions 63, 6 respectively.
In step 6, male and female were joined and bonded. The average thickness of the adhesive 69 was 100 μm. The obtained five sets of test pieces were held for 7 days.

A tensile test was carried out on the five sets of test pieces, in which the shaped members 61, 61 bonded in FIG. As a result, each set of test pieces broke at the bonded portion, and the average breaking strength was 39200 N (7
84 N / mm). In addition, each section 61 is connected to the joint 6.
Elongation deformation occurred in an intermediate portion excluding 3, 66. Incidentally, the total length Δx of the bonded portion in each test piece is shown in FIG.
(B) three vertical portions x ₂ , x ₂ , x ₃ (5 m
mx 3) and the sum of a pair of inclined portions x ₄ (20.6 mm x 2). When this was multiplied by the shear strength (τ) based on the above formula 5, the value shown at the right end of the following formula 8 was calculated.

[0050]

Τ × ８x = 12.7 N / mm ² × ((5 mm × 3) + (2
0.6 mm x 2)) = 714 N / mm

On the other hand, the proof limit per 1 mm of the length of the profile 61 itself along the depth direction of the paper shown in FIG.
At 5 N / mm, the breaking strength is 950 N / mm.
Further, the actual strength (784 N / mm) measured by the test piece was higher than the value (714 N / mm) of the product of the shear strength (τ) calculated by Expression 8 and the total length Δx of the bonded portion. This is because the strength is calculated based on the tensile shear strength in Expression 8, but since the tensile strength is higher than the tensile shear strength, it is considered that the increase is taken into account. Therefore, the above equation 8 using the tensile shear strength (τ)
It has been confirmed that the value calculated by the above can sufficiently guarantee the safety when designing the bonding strength of the panel 60 obtained by bonding the profiles 61, 61.

[0052]

According to the panel of the present invention described above, the adhesive is interposed between the electrodeposition coating layers and the two members are firmly adhered to each other. Since substantially the same adhesive strength can be obtained, it is possible to form a panel in which a plurality of extruded members are firmly joined with only an adhesive. In addition, since each profile is coated on its surface with the anodic oxide film layer and the electrodeposition coating layer, a panel having both high corrosion resistance and high appearance gloss can be obtained. In addition, the surface treatment usually used for the aluminum material can be used as it is. Claims 2 to 4
According to the panel of (1), since there is a joint portion which can strongly resist a tearing force or a peeling force or a joint portion in which these are hard to act, stable joining by an adhesive can be obtained. Furthermore, according to the panel of the fifth and sixth aspects, for the joint part joined by the required tensile strength or adhesive,
An extruded profile having the required adhesive strength and cross-sectional shape can be easily used, and a panel having stable adhesive strength can be obtained.

On the other hand, according to the panel manufacturing method of the present invention, the adhesive applied between the extruded profiles is not affected by the anodic oxidation treatment and the electrodeposition coating, and the adhesive between the plain aluminum surfaces is different. Since substantially the same adhesive strength can be obtained, a panel in which a plurality of extruded members are firmly joined with only an adhesive can be reliably manufactured. In addition, corrosion resistance and appearance gloss can be obtained, and the adhesive does not deteriorate due to contact with an anodizing treatment solution or a solvent for electrodeposition coating as in the prior art, so that the required adhesive strength can be reliably obtained. In addition, the surface treatment equipment / process normally used for aluminum materials can be used as it is. According to the manufacturing method of claim 10, the electrodeposition coating layer is firmly adhered to the unsealed anodic oxide coating layer. Breakage between the coating layer and the coating layer can be reliably prevented.

[Brief description of the drawings]

FIG. 1A is a schematic diagram showing a state of a tensile test performed on a plate piece to obtain a panel of the present invention, and FIG. 1B is a schematic diagram showing an action of an adhesive at a joint portion between extruded members. .

FIG. 2A is a partial sectional view showing a panel of the present invention, and FIG.
FIG. 2A is an enlarged view of a dashed line portion a in FIG. 2A, and FIG.

3 (A) is a partial cross-sectional view showing a state in which anodizing treatment has been performed on the surface of the profile of FIG. 2 (B), and FIG. 3 (B) shows a state in which electrodeposition coating has been performed; Partial sectional view.

FIG. 4 (A) is a partial cross-sectional view of different extruded profiles, and FIG.
(A) is an enlarged view of a dashed-dotted line portion (a), and (B) is a schematic cross-sectional view showing a panel obtained by joining the shapes of (A).

5A is a partial cross-sectional view showing each joint of extruded profiles in different forms, FIG. 5A is an enlarged view showing a one-dot chain line part a in FIG. 5A, and FIG. FIG. 3 is a partial cross-sectional view showing a state where the components are joined with an adhesive.

6 (A) is a cross-sectional view of an extruded member having the joining portion of FIG. 5 at both ends, FIG. 6 (a) is an enlarged view showing a dashed-dotted line portion a in FIG.
(B) is a partial cross-sectional view showing the joined state of the above-mentioned shaped members, (C)
Is a cross-sectional view of a panel formed by joining a plurality of such profiles.

FIG. 7A is a partial cross-sectional view of a panel in which extruded profiles in different forms are joined together, and FIG. 7A is a dashed-dotted line portion a in FIG.
(B) is a partial cross-sectional view showing an extruded profile according to an embodiment of the present invention and a panel joined to the extruded profile.

[Explanation of symbols]

2 ………………………………………………
……………………………………………………………………………………
…… Electrodeposition coating layer 18,28,38, S, 59,69 …………………………
……… Adhesives 10a, 10b, 20, 30, 40, 50, 61 ………………
...... Extruded profiles 20a, 30a, 40d, 50a, 60 ...............
... Panels 21a, 21b, 31, 35, 41, 45, 52, 55, 63,
66… Joint H ……………………………………………………
……… Tearing force

 ──────────────────────────────────────────────────続 き Continued on the front page F term (reference) 2E125 AA42 AD02 AE14 AG58 CA81 2E162 CB08 3J001 AA03 BB01 DA00 DE03 EA00 3J023 EA01 FA01 GA03

Claims (10)

[Claims] 1. An anodic oxide film layer is formed on an outer surface of an aluminum alloy, which is formed by joining a plurality of extruded profiles having a flat cross section and including surfaces of joints of said profiles facing each other. And an electrodeposition coating layer is coated thereon, and the electrode members are bonded to each other by bonding between the electrodeposition coating layers with an adhesive. 2. A method according to claim 1, wherein each of the opposing joints of the profile members has a concave cross-sectional shape and a convex cross-sectional shape fitted to each other so that a tearing force or a peeling force does not act on the adhesive. The panel according to claim 1, characterized in that: 3. A tearing force or a peeling force at the joints, wherein each of the joints of the profiled members facing each other has a cross-sectional shape that is higher in rigidity than the cross-sectional shape of another portion of the profiled material. The panel according to claim 1, wherein a force is hardly applied. 4. The tearing force or the tearing force applied to the joints, because one of the joints of the sections to be joined has a cross-sectional shape that is lower in rigidity than the cross-sectional shape of the other part of the sections. The panel according to claim 1 or 2, wherein a peeling force is hardly applied. 5. A joint part to be joined by the adhesive satisfies the following formula 1 with respect to a tensile strength W required for a panel. Panel. Τ × Σx ≧ W where τ is a tensile shear strength (N
/ Mm ² ), Δx is the total value of the length of the bonded portion in the cross section of the bonded portion (mm), and W is the tensile strength per unit length required in the direction in which the bonded profiles are separated from each other.
(N / mm). 6. A joint part to be joined by the adhesive satisfies the following mathematical formula 2 with respect to a cross-sectional shape of each joined shape member. Panel described in Crab. Σ _0.2 × t ≧ τ × Σx where σ _0.2 is the 0.2% proof stress (N / mm ² ) of the profile itself, t
Is the minimum value (mm) of the total values of the thickness in a cross section orthogonal to the direction of separation between the profiles, τ is the tensile shear strength (N / mm ² ) at the joint between the profiles, and Δx is the joint Shows the total value (mm) of the lengths of the bonding portions in the cross section. 7. The method according to claim 7, wherein the electrodeposited coating layer is formed by forming an anodic oxide layer on the profile and washing with hot water, followed by electrodeposition coating of an acrylic resin and baking. The panel according to any one of claims 1 to 6, wherein: 8. The panel according to claim 1, wherein the adhesive is a two-part cold-setting adhesive made of an epoxy or acrylic resin. 9. A method of manufacturing a panel formed by joining a plurality of extruded profiles made of an aluminum alloy and having a flat cross section, wherein an anodizing step of forming an anodized film layer on the surface of the profile. And, an electrodeposition coating step of coating an electrodeposition coating layer on the surface of the anodic oxide coating layer of the profile, and applying an adhesive between the electrodeposition coatings on the surfaces of the joints facing the profiles. A coating step of applying the coating material and bringing the shaped materials into close contact with each other, and then curing the adhesive. 10. The panel manufacturing method according to claim 9, wherein the electrodeposition coating step is performed after the anodic oxide film layer generated in the anodizing step is washed with hot water.