JP3287715B2 - Rivet installation method - Google Patents

Description

DETAILED DESCRIPTION OF THE INVENTION

[0001]

BACKGROUND OF THE INVENTION This invention relates to a method of constructing the rivet, and more particularly, of the thickness 1~10mm synthesis
The present invention relates to a rivet installation method for rivet-fastening a metal plate with a composite plate formed by bonding a metal sheet having a thickness of 1 mm or less to both surfaces of a resin plate .

[0002]

2. Description of the Related Art A composite plate formed by bonding a metal sheet having a thickness of 1 mm or less to both sides of a plate-like non-ferrous material having a thickness of 1 to 10 mm is useful as a building material due to its light weight and other characteristics. By the way, for example, when the above-mentioned composite plate is used as the outer wall material, it is necessary to fasten the metal plate constituting the supporting portion.

A rivet, which is one of the fastening means, is a fastening member having a head and a shaft. Usually, rivet fastening is performed by forming a rivet hole in a superimposed plate-like body by a drill or the like, and riveting the rivet hole. To protrude the shaft,
This is performed by a method in which a force is applied (caulked) to the protruding shaft portion to form a head portion at the end portion.

[0004]

However, in the case of ordinary rivet fastening, the rivet head is exposed on both sides of the fastened plate-like body, so that one metal sheet surface of the composite plate is used as a design surface. There are disadvantages that cannot be obtained. On the other hand, as a special rivet, a mandrel through-hole is provided from the rivet head to the shaft portion, and the mandrel is disposed in the through hole, and the outer diameter of the mandrel head projecting from the shaft portion is larger than the inner diameter of the through hole. Larger mandrel insertion rivets are known.

[0005] The above-mentioned method of fastening the mandrel insertion type rivet comprises expanding the diameter of the rivet shaft by pulling out the mandrel. Therefore, if the mandrel insertion type rivet is applied to the above-mentioned composite plate and the diameter of the rivet shaft portion is expanded in the plate-like non-ferrous material which is the core material of the composite plate, the rivet shaft portion is attached to one metal sheet surface of the composite plate. Can be riveted without exposing the rivet.

However, simply forming a rivet hole having a depth reaching a plate-like non-ferrous material without penetrating one of the metal sheets of the composite plate as a rivet hole for embedding the mandrel insertion type rivet is disadvantageous as follows. There is. That is, since the thickness of the plate-like non-ferrous material as the core material is thin, surface distortion occurs on one metal sheet surface to be used as a design surface due to processing of a rivet hole or a swaging operation. This is extremely disadvantageous when smooth coating is performed on the side.

Further, since the surface metal sheet itself is extremely thin, less than 1 mm, the metal sheet in contact with the metal plate is deformed depending on the force applied to the metal plate thus fastened. Since the plate-shaped material is a non-ferrous material such as a resin and is weak in strength, there is a problem that the rivet is easily pulled out.

As described above, a rivet between a composite plate formed by bonding and bonding a metal sheet having a thickness of 1 mm or less to both sides of a plate-like non-ferrous material having a thickness of 1 to 10 mm and a metal plate forming a support portion, for example, , With the use of mandrel insertion type rivets,
Although it is possible to do so that the rivet shaft is not exposed on one metal sheet surface of the composite plate, the thickness of each of the plate-like non-ferrous material constituting the core material of the composite plate and the metal sheet constituting the surface material However, it is too thin to have various problems.

SUMMARY OF THE INVENTION The present invention has been made in view of the above circumstances, and has as its object to combine a composite plate formed by bonding and bonding a metal sheet having a thickness of 1 mm or less to both surfaces of a synthetic resin plate having a thickness of 1 to 10 mm. A rivet setting method for riveting a plate with a rivet, without exposing a rivet end to one metal sheet surface of a composite plate, preventing surface distortion of the metal sheet, and having sufficient strength. It is an object of the present invention to provide an improved rivet setting method capable of being set.

[0010]

The present inventors have made various studies to achieve the above object, and as a result, using a mandrel insertion type rivet, a rivet is set in a synthetic resin plate which is a core material of a composite plate . The above object can be easily achieved if the composite plate and the metal plate are joined in advance by a specific means when expanding the diameter of the shaft portion, and a rivet hole is formed in a specific form in the synthetic resin plate. We found that we could do it.

The present invention has been completed on the basis of the above findings, and the gist of the present invention is to bond a metal sheet having a thickness of 1 mm or less to both sides of a synthetic resin plate having a thickness of 1 to 10 mm. A method for rivet fastening a composite plate and a metal plate, comprising: a rivet, a mandrel through-hole is provided from a rivet head to a rivet shaft, and the mandrel through-hole is provided in the mandrel through-hole. Use a mandrel insertion type rivet in which the mandrel is penetrated and the outer diameter of the mandrel head projecting from the rivet shaft is larger than the inner diameter of the through hole for the mandrel, and first, an adhesive or a thermoplastic resin or The composite plate and the metal plate are joined by the elastomer adhesive, and then, from the surface side of the metal plate opposite to the composite plate.
When the composite plate reaches the synthetic resin plate and the metal plate is not joined
Rivet that does not penetrate the metal sheet
A hole, wherein the rivet has a rivet head and a metal plate.
Rivet holes that are embedded leaving a predetermined distance between
After formation , rivets are embedded in the rivet holes according to the above embodiment, and then the rivet and the mandrel are positioned relative to each other.
At least rivet is inserted into rivet hole by pulling
A rivet setting method characterized in that the rivet shaft portion is expanded in diameter by moving the rivet in the pushing direction .

[0012]

DETAILED DESCRIPTION OF THE PREFERRED EMBODIMENTS The present invention will be described below in detail with reference to the accompanying drawings. 1 to 4 are process explanatory diagrams showing an example of the construction method of the present invention, FIG. 5 is an explanatory diagram showing another example of the construction method of the present invention, and FIG. 6 is still another example of the construction method of the present invention. FIG.

First, the construction method shown in FIGS. 1 to 4 will be described. Mandrel insertion type rivet used in this construction method (hereinafter referred to as "rivet" as appropriate)
(1) The rivet head (11 ) extends from the rivet shaft (1).
A mandrel through-hole (13) is provided in 2), and the mandrel (2) is disposed through the through-hole, and the outer diameter of the mandrel head (21) protruding from the rivet shaft (12) has a mandrel through-hole. Larger than the inner diameter of (13),
In addition, the rivet shaft (12) has a structure in which the leading end is divided into a plurality by expanding the diameter. And the nail | claw (14) is formed by division | segmentation. Although the number of claws (14) is not particularly limited, 4 to 8 nails are appropriate.

[0014] The above-mentioned divided structure comprises a rivet shaft (12).
Using a rivet (1) provided with a depression of an appropriate shape on the inner wall at the tip of the rivet, and using a rivet (1) provided with a slit parallel to the axis on the inner wall at the tip of the rivet shaft (12) It is achieved by a method using a mandrel (2) provided with a cutting blade on the mandrel head (21), or a method combining these as appropriate.

The rivet (1) is made of an appropriate material such as aluminum alloy, brass, stainless steel and the like. The mandrel (2) is usually made of a spring material. The rivet (1) used in the present invention is known. For example,
Japanese Patent Application Publication No. 3-15000 proposes a cartridge (tube) rivet in which a row of a plurality of rivets is packaged to enhance convenience.

In the construction method of the present invention, the composite plate to be riveted is a metal sheet (A) having a thickness of 1 mm or less on both sides of a synthetic resin plate (B) having a thickness of 1 to 10 mm.
This is a composite plate formed by bonding and bonding a metal sheet (C). In the illustrated example, the metal sheet (A) forms the surface (design surface) of the building material. Then, the metal plate (D) fastened to the composite plate constitutes a supporting portion. The lower limit of the thickness of the metal sheet (A) and the metal sheet (C) is usually 0.2 mm.
It is about.

The synthetic resin plate (B) constituting the above-mentioned composite plate
Specific examples of the synthetic resin include thermoplastic resins such as polyolefin such as polyethylene and polypropylene, polyvinyl chloride, polyamide, polycarbonate, polystyrene, polyhydroxyl ether, and vinyl acetate. Of course, a thermosetting resin may be used. On the other hand, for the metal sheets (A) and (C), metals such as aluminum, stainless steel, iron, copper, titanium, tin, and nickel or various alloys are used.

A synthetic resin plate (B) and a metal sheet (A);
Examples of the adhesive used for bonding with the metal sheet (C) include an ethylene-acrylic acid copolymer, an ethylene-vinyl acetate copolymer, an ethylene-glycidyl acrylate copolymer, an ethylene-maleic anhydride copolymer, Examples include graft-modified unsaturated carboxylic acids of polyolefins (such as polyethylene) or anhydrides thereof. The graft ratio of the unsaturated carboxylic acid or anhydride thereof in such a graft-modified product is usually from 1 × 10 ^{−4 to} 3% by weight.

The above-mentioned graft-modified product is 1 to 30
% By weight of a hydrocarbon-based elastomer such as ethylene-
It can also be used as an adhesive composition containing propylene rubber, polyisobutylene and the like. The adhesive is usually
It is used by being laminated as an adhesive film on the surface of a synthetic resin sheet, but may be used by being blended with a synthetic resin sheet. When used as an adhesive film, its thickness is usually selected from the range of 10 to 100 μm.

The present invention is particularly suitable for a composite plate in which the synthetic resin plate (B) is made of a synthetic resin. As such a composite plate, for example, a product “Alpolic” manufactured by Mitsubishi Kasei Co., Ltd. can be mentioned. This product is a composite plate in which a metal plate (for example, an aluminum plate) is adhesively bonded to both surfaces of a thermoplastic resin plate (for example, a polyethylene plate), and is widely used in various fields including the building materials field.
The composite plate as described above is manufactured by superposing a metal sheet on both sides of a synthetic resin sheet that has been melt-extruded and passing the sheet between rotating rolls.

First, in the present invention, the composite plate and the metal plate are joined by an adhesive or a thermoplastic resin-based or elastomer-based adhesive. The symbol (E) in the figure represents the pressure-sensitive adhesive layer as a representative. An adhesive is a type of adhesive that is also called a pressure-sensitive adhesive, and is used as a primary adhesive unlike a thermosetting resin-based adhesive used for permanent bonding because of its high adhesive strength. You.

As the pressure-sensitive adhesive, specifically, a natural rubber or a synthetic rubber as a base material or a thermoplastic elastomer such as a styrene-butadiene block copolymer or a styrene-isoprene copolymer is used. So-called rubber-based pressure-sensitive adhesives, so-called acrylic-based pressure-sensitive adhesives containing acrylic acid ester copolymer as a main component, so-called silicone-based pressure-sensitive adhesives containing silicone rubber and silicone resin as main components, and so-called vinyl-based pressure-sensitive adhesives based on vinyl ether polymers Adhesives and the like can be mentioned.

Specific examples of the thermoplastic resin-based adhesive include various adhesives utilizing vinyl acetate resin, vinyl chloride resin, ethylene acetate resin, acrylic resin, cellulose, and the like. Any of a volatilization type, a chemical reaction type, and a heat melting type may be used. Examples of the elastomer-based adhesive include various adhesives utilizing chloroprene rubber, nitrile rubber, styrene-butadiene block copolymer, and the like, and these may be any of a solvent volatile type and a hot-melt type.

In the present invention, the reason why the composite plate and the metal plate are joined by an adhesive or a thermoplastic resin-based or elastomer-based adhesive is as follows. That is,
In the case of a riveted product in which the composite plate and the metal plate are not adhesively bonded, the metal sheet and the metal plate of the composite plate are not integrated on a wide surface, so that when a pulling force is applied to the rivet, the metal plate itself is removed. Does not exhibit great resistance to pulling, the metal sheet in contact with the metal plate is deformed, and finally the rivet is pulled out of the rivet hole.

On the other hand, in the case of a riveted product in which the composite plate and the metal plate are adhesively bonded, the metal plate itself exerts a large resistance to pulling out and prevents deformation of the metal sheet in contact with the metal plate. I do. As a result, according to the present invention, a rivet fastening product having a high rivet pull-out strength can be obtained.

The reason for using a pressure-sensitive adhesive or a thermoplastic resin-based or elastomer-based adhesive in the present invention is as follows. That is, the pressure-sensitive adhesive or the thermoplastic resin-based or the elastomer-based adhesive has a lower adhesive strength than the urea resin, a melamine resin, a phenol resin, or a thermosetting resin-based adhesive using an epoxy resin, but has elasticity. There are features. Therefore, the above-mentioned pressure-sensitive adhesive or the like is effective in preventing the surface distortion of the metal sheet (A) which may be feared at the time of processing the rivet hole or at the time of swaging operation due to its cushion effect.

In addition, the use of the above-mentioned pressure-sensitive adhesive and the like
The advantage is great in the case of a composite plate in which a metal sheet is bonded and bonded to both sides of a synthetic resin sheet. That is, as described above, since the composite board is manufactured by bonding and bonding a low-temperature metal sheet to both sides of a synthetic resin sheet that has been heated and melted, internal stress remains in the synthetic resin sheet. .
The internal stress is balanced by the metal sheets bonded on both sides to maintain the flatness of the composite plate. Therefore, when using a thermosetting resin-based adhesive that causes volume shrinkage during reaction curing, due to the shrinkage force,
The balance of the internal stress described above is lost, and the flatness of the composite plate is impaired. On the other hand, the above-mentioned pressure-sensitive adhesive does not impair the flatness of the composite plate due to its cushioning effect.

In the present invention, it is preferable to use an adhesive tape for the adhesive layer (E) from the viewpoint of handling.
Specifically, for example, it is preferable to use an adhesive tape in which an acrylic or synthetic rubber-based adhesive is applied to both surfaces of an acrylic resin tape, and release paper is attached to both surfaces. In particular, a double-sided pressure-sensitive adhesive tape using a foamed acrylic resin tape made of completely closed cells as a support is preferable. Examples of such a double-sided adhesive tape include a product number “Y-4930” (thickness 0.64 mm) of a product “VHB” series of Sumitomo 3M Limited,
“Y-4920” (0.4 mm thick), “Y-492”
4 "(thickness: 0.25 mm).

Next, in the present invention, the metal plate (D)
A rivet hole (3) is formed from the surface side of the rivet (1) to a depth reaching the synthetic resin plate (B) without penetrating the metal sheet (A) on the side where the metal plate (D) is not joined. Is embedded (see FIG. 1). In this case, it is important that the rivet hole (3) is formed relatively shallow.

[0030] That is, in the present invention, unlike a general sense, the rivet (1) is embedded, leaving a predetermined distance between the rivet head (11) a metal plate and (D), a synthetic resin plate (B) the rivet in the hole (3) is embedded rivet shank (12) of a synthetic resin plate (B) inside can be expanded in and the rivet shank which is expanded (1
It is important that it is formed to a depth equal to 2) and the total length of the mandrel head (21) projecting therefrom.

A shallow rivet hole (3) is formed as described above.
The reason is as follows. That is, the deep rivet holes
In the case, there is a space at the tip of the mandrel head (21)
Therefore, when expanding the diameter of the rivet shaft (12),
It works so that the non-ferrous material that
The anchor effect by the enlarged diameter part is not fully exhibited
No. In other words, the space above serves as a matrix allowance
The matrix surrounding the enlarged diameter part is loose. to this
On the other hand, in the case of shallow rivet holes (3),
Since there is no allowance for the non-ferrous material to be expanded,
The wrapped matrix does not become loose, but in the enlarged diameter part
The anchor effect is fully exhibited. Also, shallow Ribe
Left by forming the slot (3)Synthetic resin
, Due to its cushioning effect, when processing rivet holes
Surface distortion of metal sheet (A) that may be feared during swaging operation
It is also effective for the prevention of mimi.

The rivet hole (3) is provided for the embedded rivet.
G shaft part (12)Synthetic resin plateIt is possible to expand the diameter in (B)
Must be as deep as possible, but usuallySynthetic resin plate
(B) shallow rivet holes in the range of about 50% or less of the thickness
(3) is preferably formed. Therefore, the rivet (1)
The dimensional relationship is as follows: metal plate (D), metal sheet (C),Synthetic tree
Fat plateThe thickness is appropriately determined in consideration of each thickness of (B). In addition,
Inner diameter of rivet hole (3) and rivet shaft (12)
The maximum value of the outer diameter is about 5 mm.

Next, in the present invention, FIGS.
Rivet head of at least rivet (1) as shown in
(11) by moving the metal plate (D) side, to
Chi match for, rivets pushing direction to the rivet hole (3)
By moving (1), the rivet shaft (12)
Expand the diameter. In the present invention, when the rivet (1) is embedded in the rivet hole (3), a predetermined distance is left between the rivet head (11) and the metal plate (D), and at least the rivet (1) is inserted into the rivet hole. The reason for moving in the pushing direction in (3) is as follows. That is, in the present invention, as described above, the rivet hole (3) is formed shallow. Therefore, the rivet (1) is pushed into the rivet hole (3).
The force to move the rivet (1) acts not in the moving direction of the rivet (1) but in the vertical direction. As a result, the matrix of the enlarged diameter portion of the rivet shaft (12) is compressed, and a stronger anchoring effect is obtained. Can be The distance between the rivet head (11) and the metal plate (D) also depends on the dimensional relationship of the rivet (1), but is usually preferably about 2 to 4 mm. Then, the rivet head (11) has
A metal or resin washer is provided. In such a case, it is preferable that the moving distance of the rivet head (11) be within the above range in consideration of the thickness of the washer.

The movement of the rivet (1) can be performed by using an appropriate means used for pulling out the mandrel (2). For example, an air tool (not shown) manufactured by Nippon Drive It Co., Ltd. is appropriately fixed, and the reaction force due to the pulling force of the mandrel (2) is applied to the rivet head (1).
This can be done by acting on 1).

By moving the rivet (1), the diameter of the rivet shaft (12) is expanded as shown in FIG. As a result, the rivet shaft (12) is expanded in diameter, the tip is divided into a plurality of parts, and the claws (14) are formed (see FIG. 3). As a result, an anchoring effect by the claw (14) is exhibited. As shown in FIG. 4, the diameter of the rivet shaft (12) is increased by using a claw (14).
Is preferably performed until the curved front end of the metal sheet contacts the inner surface of the metal sheet (C) on the rivet hole forming side. The nail (14) in contact with the inner surface of the metal sheet (C) also functions as a head. Then, the metal sheet integrated with the metal plate (D) by the pressure-sensitive adhesive layer (E) exhibits a large resistance to pulling out the rivet even though the thickness is 1 mm or less.

In the construction method shown in FIGS. 1 to 4, the pulling out is stopped when the claw (14) is sufficiently formed, and the mandrel (2) is cut near the projecting portion of the rivet head (11). , And remain inside the rivet (1) as a stem. If a mandrel (2) having a cutout on the peripheral surface of the portion to be cut is used, cutting can be easily performed.

In the present invention, in addition to the above-mentioned mandrel insertion type rivet, a mandrel insertion type rivet having a shape shown in FIGS. 5 and 6 can be used. The mandrel inserted rivet shown in Figure 5, the rivet shank from the rivet head (11) (12) a mandrel through-hole (13) is provided on the mandrel (2) may be piercingly disposed in the mandrel through hole The mandrel head (21) projecting from the rivet shaft (12) has an outer diameter larger than the inner diameter of the mandrel through-hole (13). Then, in the same manner as described above, the rivet shaft is expanded in diameter by the movement of the rivet to form the rivet head (15).

On the other hand, the mandrel insertion type rivet shown in FIG. 6 has a structure in which a rib (16) is formed around the rivet shaft (12) in the mandrel insertion type rivet shown in FIG. And, by the diameter expansion of the rivet shaft portion (12), the rib (16) bites into the wall surface of the rivet hole (3) and an anchoring effect is exhibited. The enlarged rib (16) also functions as a head. In the illustrated example, the rib (16) is provided over the entire rivet shaft (12), but this is not necessary. Also, as in the case of the rivet (1) shown in FIG. 5, the tip of the rivet shaft (12) is made thick, and the head (15) having a large shape as shown in FIG. It may be formed at the end of the shaft (12).

In the mandrel insertion type rivet having the shape shown in FIGS. 5 and 6, the mandrel (2) is usually completely pulled out from the rivet (1) as shown in FIG. May be cut and left in the rivet (1). Also, when using any of the above rivets, rivet holes (3)
When the rivet (1) is embedded in the rivet, an adhesive can be applied to the wall surface of the rivet hole (3). Thereby, a stronger fastening structure is achieved.

The mandrel inserted rivet used in construction method shown in FIGS. 1-4, synthesis by pawl (14)
The deeper the bite into the resin plate (B), the higher the pull-out strength. Incidentally, in the construction method shown in FIGS. 1 to 4, a pullout strength of 105 to 120 kgF / piece is developed.

The building materials obtained by the construction method of the present invention are:
For example, used as an outer wall material, a metal sheet (A)
The surface has no surface distortion and the rivet shaft (1
Since 1) is embedded in the synthetic resin plate (B), the metal sheet (A) surface (design surface) is a completely smooth surface. The metal sheet (C) having a thickness of 1 mm or less has a sufficient pull-out strength.

[0042]

According to the present invention described above, the thickness is 1 to 1.
A rivet between the composite plate and the metal plate is provided by bonding a metal sheet having a thickness of 1 mm or less to both surfaces of a 10 mm synthetic resin plate , but the rivet ends are exposed on one metal sheet surface of the composite plate. Without this, surface distortion of the metal sheet can be prevented, and fastening can be performed with sufficient strength. Therefore, the rivet fastening product obtained by the present invention has a beautiful appearance, can fully utilize the metal sheet surface as a design surface, and can easily perform painting work and the like.

[Brief description of the drawings]

FIG. 1 is a process explanatory view showing an example of a construction method according to the present invention.

FIG. 2 is a process explanatory view showing one example of a construction method of the present invention.

FIG. 3 is a process explanatory view showing an example of a construction method according to the present invention.

FIG. 4 is a process explanatory view showing an example of a construction method according to the present invention.

FIG. 5 is an explanatory view showing another example of the construction method of the present invention.

FIG. 6 is an explanatory view showing another example of the construction method of the present invention.

[Explanation of symbols]

1: Rivet 11: Rivet head 12: Rivet shaft 13: Mandrel through hole 14: Claw 15: Rivet head 16: Rib 2: Mandrel 21: Mandrel head 3: Rivet hole A: Metal sheet B: Synthetic resin Plate C: Metal sheet D: Metal plate E: Adhesive layer

──────────────────────────────────────────────────続 き Continued on the front page (58) Field surveyed (Int. Cl. ⁷ , DB name) F16B 19/10 B21J 15/02 F16B 5/04

Claims (3)

(57) [Claims] 1. A thick 1~10mm composite plate the thickness of 1mm or less of the metal sheet on both sides of the synthetic resin plate formed by adhesive bonding of the metal plate to a method for riveting, Li
As bets from rivet head mandrel through hole is provided in the rivet shank, the said mandrel through hole mandrel is penetrated disposed, the outer diameter of the mandrel head projecting from the rivet shank of the mandrel through hole Using a mandrel insertion type rivet made larger than the inner diameter, and first, the composite plate and the metal plate are joined by an adhesive or a thermoplastic resin-based or elastomeric adhesive,
Next, from the surface side of the metal plate opposite to the composite plate,
Gold on the side that reaches the synthetic resin plate and is not bonded to the metal plate
Rivet holes that do not penetrate metal sheets
Between the rivet head and the metal plate
A rivet hole to be embedded leaving a predetermined distance was formed
Thereafter, the rivet is buried in the rivet hole according to the above-described embodiment, and then the rivet and the mandrel are relatively pulled out.
At least the rivet is pushed into the rivet hole by movement
A rivet setting method characterized in that the rivet shaft portion is expanded in diameter by moving the rivet in a direction . 2. The rivet according to claim 1, wherein a diameter of the rivet shaft is enlarged to divide the tip into a plurality of parts to form claws, and the mandrel is cut near the rivet head and left in the rivet. Construction method. 3. A rib is formed around the rivet shaft.
2. The use of a mandrel insertion rivet as described above.
The construction method described .