JP3417903B2 - Metal plate welding method - Google Patents
Metal plate welding methodInfo
- Publication number
- JP3417903B2 JP3417903B2 JP2000133556A JP2000133556A JP3417903B2 JP 3417903 B2 JP3417903 B2 JP 3417903B2 JP 2000133556 A JP2000133556 A JP 2000133556A JP 2000133556 A JP2000133556 A JP 2000133556A JP 3417903 B2 JP3417903 B2 JP 3417903B2
- Authority
- JP
- Japan
- Prior art keywords
- welding
- metal plate
- water
- tip
- ultrasonic
- Prior art date
- Legal status (The legal status is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the status listed.)
- Expired - Lifetime
Links
Landscapes
- Pressure Welding/Diffusion-Bonding (AREA)
Description
【発明の詳細な説明】
【０００１】
【発明の属する技術分野】この発明は、金属板の溶着方
法、更に詳しくは、表面を被覆した金属板を超音波溶着
で接続する場合に、金属板製品の外面側に溶接痕が生じ
ないようにした溶着方法に関する。
【０００２】
【従来の技術】例えば、塩ビ鋼板の如き表面を被覆した
金属板は、種々の用途に使用されており、建材として屋
根のけらば、庇等の装飾用覆い材もその一つである。
【０００３】このような金属板を上記した建材として用
いる場合、建材相互の接続が必要になる。
【０００４】ところで、表面を被覆した金属板の接続に
は、超音波溶着の採用が適している。何故ならば、リベ
ットによるカシメ接続では孔加工が必要になり、コスト
的に高くつくと共に、外面にリベットの頭が露出し、意
匠的な価値が低下し、また、両面粘着テープでの接続は
強度的に弱いという問題があるのに対して、超音波溶着
は、抵抗溶接と異なり、接合温度が低く、結晶粗粒化も
なく、接合部の性質は母材に比べてほとんど損なわれな
いという利点があるからである。
【０００５】従来の超音波溶着は、一対の溶着チップで
接続せんとする金属板の重ね合わせた部分を挟み、加圧
力を加えた状態で上部溶接チップに短時間振動エネルギ
ーを与え、局部的な振動発熱によって溶接を行うもので
ある。
【０００６】
【発明が解決しようとする課題】ところで、上記した超
音波溶着は、一対の溶着チップで接続せんとする金属板
を挟んで加圧力を加え、同時に振動を与えるため、外装
材が溶けることにより、接続した金属板の両側表面に凹
入状の溶着痕が発生し、この溶着痕が接続部分の外面に
見えると、製品の商品価値が低下するという問題があ
る。
【０００７】そこで、この発明の課題は、製品の外面と
なる接続した金属板の一方表面に、溶着痕の発生がな
く、製品の商品価値を大幅に向上させることができる金
属板の溶着方法を提供することにある。
【０００８】
【課題を解決するための手段】上記のような課題を解決
するため、請求項１の発明は、超音波溶着を用い、一対
の溶着チップで接続せんとする金属板の重ね合わせた部
分を挟んで溶着する場合に、一方溶着チップの金属板に
対する接触部分に、この接触部分を含む一方溶着チップ
の端部を覆えるように布地を用いて形成された含水性部
材を取り付けておき、この含水性部材に水を含ませて濡
れている状態で溶着を行う構成を採用したものである。
【０００９】ここで、上記含水性部材は、布地を用いて
一方溶着チップの先端を覆えるように形成され、溶着時
に水を与えることで温度の上昇を抑え、金属板の表面に
溶着痕が付くのを防止する。
【００１０】
【発明の実施の形態】以下、この発明の実施の形態を図
示例と共に説明する。
【００１１】図１のように、金属板１、１の溶接に用い
る超音波溶着は、上部溶着チップ２に超音波発生器を接
続すると共に上端部に重錘を設け、この上部溶着チップ
２の直下に反射極となる下部溶着チップ３を配置し、互
いに接続せんとする金属板１、１の重ね合わせた部分を
上部溶着チップ２と下部溶着チップ３で挟み、両溶着チ
ップ２、３で金属板１、１の重ね合わせた部分を加圧し
た状態で、超音波発生器を起動させることにより、接合
部に超音波振動エネルギーを与えて接合するものであ
る。
【００１２】この超音波溶接によって接続せんとする金
属板１、１としては、両面塩ビ鋼板、アルミ板、鉄板、
ポリオレフィン外装鋼板等を挙げることができ、これら
の材料は、例えば、建材として屋根のけらば、庇等の装
飾用覆い材として用い、建材相互の接続に上記超音波溶
着を採用する。
【００１３】図２は、金属板１、１の接続状態の一例を
示し、所定の断面形状に折り曲げ加工した二枚の金属板
１、１を、同様の材質と断面形状を有する接続板４を介
して接続している。この場合、一方金属板１と接続板４
を重ねて溶着５し、この後他方金属板１と接続板４を重
ねて溶着５するものである。また、接続板４の使用を省
き、二枚の金属板１、１の端部を直接重ねて溶着するよ
うにしてもよい。
【００１４】上記超音波溶着において、一方の溶着チッ
プ、具体的には下部溶着チップ３の下位金属板１に対し
て接触する上端部に、含水性部材６を取り付けておき、
この含水性部材６に水を含ませた状態で溶着を行うこと
により、下部溶着チップ３および下位金属板１の温度の
上昇を抑え、これによって外装材が溶けるのを防ぎ、下
位金属板１の表面に溶着痕が付くのを防止するものであ
る。
【００１５】この含水性部材６は、布地を用いて下部溶
着チップ３の上端を覆えるように形成され、溶着に際し
ての水の付与は、溶着開始前に注水用具を用いて人為的
に水をかけるようにしたり、下部溶着チップ３の近傍に
注水ノズルを配置し、含水性部材６に常時注水するよう
にしてもよく、注水の方法やタイミングは適宜選択すれ
ばよく、要は溶着時に含水性部材が濡れているようにす
ればよい。
【００１６】次に、溶着の方法を図１に基づいて説明す
る。
【００１７】互いに接続せんとする金属板１、１の重ね
合わせた部分を上部溶着チップ２と下部溶着チップ３で
挟み、両溶着チップ２、３で金属板１、１の重ね合わせ
た部分を加圧した状態で、超音波発生器を起動させるこ
とにより、接合部に超音波振動エネルギーを与えて接合
するものである。このとき、重ね合わせた金属板１、１
を用いた製品の外面となる側を下部溶着チップ３に含水
性部材６を介して当接させ、金属板１、１を用いた製品
の内面となる側を上部溶着チップ２に当接させさせて超
音波溶接を行う。
【００１８】このようにすることにより、水を含む含水
性部材６を介して当接させた下位金属板１の表面には、
下部溶着チップ３の温度の低下とクッション性により、
外装材がとけるのを防ぎ、溶着痕が付くのを防止するこ
とができ、溶着痕は製品の内面となる側にのみ発生し、
外からは溶着痕の見えない製品が得られることになる。
【００１９】
【発明の効果】以上のように、この発明によると、一対
の溶着チップで接続せんとする金属板の重ね合わせた部
分を挟んで超音波溶接する場合に、一方溶着チップの金
属板に対する接触部分に含水性部材を取り付けておき、
この含水性部材に水を含ませて濡れている状態で溶着を
行うようにしたので、水を含ませた含水性部材で一方溶
着チップおよびこれに当接する金属板の温度の上昇を抑
え、布製含水性部材のクッション性とにより、金属板の
表面に溶着痕が付くのを防止することができ、溶着時に
おいて金属板を用いた製品の外面となる側に含水性部材
を介して一方溶着チップを当接させれば、接続部分が外
からは溶着痕の見えない製品を得ることができ、金属板
を用いた製品の意匠性と商品価値の向上を図ることがで
きる。Description: BACKGROUND OF THE INVENTION 1. Field of the Invention The present invention relates to a method for welding a metal plate, and more particularly, to a method for welding a metal plate whose surface is coated by ultrasonic welding. And a welding method for preventing the occurrence of welding marks on the outer surface side of the welding. [0002] For example, metal sheets coated on the surface such as PVC steel sheets are used for various purposes, such as roof coverings, eaves and other decorative covering materials as building materials. is there. When such a metal plate is used as the above-mentioned building material, it is necessary to connect the building materials to each other. [0004] Ultrasonic welding is suitable for connecting a metal plate whose surface is covered. This is because caulking with rivets requires drilling, which is costly, exposes the head of the rivet on the outer surface, reduces the design value, and requires a double-sided adhesive tape for connection. In contrast to resistance welding, ultrasonic welding has the advantage that unlike welding, the welding temperature is low, there is no grain coarsening, and the properties of the joint are hardly impaired compared to the base metal Because there is. In conventional ultrasonic welding, a pair of welding tips sandwich a superposed portion of a metal plate to be connected, apply vibration energy to the upper welding tip for a short time while applying a pressing force, and a local Welding is performed by vibration heat. In the ultrasonic welding described above, a pressing force is applied across a metal plate to be connected between a pair of welding tips, and at the same time vibration is applied, so that the exterior material melts. As a result, recessed welding marks are generated on both surfaces of the connected metal plate, and if these welding marks are visible on the outer surface of the connection portion, there is a problem that the commercial value of the product is reduced. Accordingly, an object of the present invention is to provide a method of welding a metal plate which does not cause welding marks on one surface of a connected metal plate serving as an outer surface of the product and which can greatly improve the commercial value of the product. To provide. [0008] In order to solve the above-mentioned problems, the invention of claim 1 uses an ultrasonic welding method, in which a pair of metal plates to be connected by a pair of welding tips are superposed. In the case where welding is performed with a portion interposed therebetween, the one-side welding tip including the contacting portion is included in the contact portion of the one- side welding tip with the metal plate.
A water-containing member formed using a cloth is attached so as to cover the end of the water-absorbing member, and the water-containing member is impregnated with water and wetted.
In this configuration, welding is performed in a state where the welding is performed. Here, the water-containing member is formed using a cloth so as to cover the tip of the one-side welding tip, and by applying water at the time of welding, the rise in temperature is suppressed, and welding marks are formed on the surface of the metal plate. Prevent sticking. An embodiment of the present invention will be described below with reference to the drawings. As shown in FIG. 1, in the ultrasonic welding used for welding the metal plates 1 and 1, an ultrasonic generator is connected to the upper welding tip 2 and a weight is provided at the upper end. A lower welding tip 3 serving as a reflection pole is disposed immediately below, and an overlapped portion of the metal plates 1 and 1 to be connected to each other is sandwiched between the upper welding tip 2 and the lower welding tip 3. The ultrasonic generator is activated in a state where the overlapped portions of the plates 1 and 1 are pressurized, so that ultrasonic vibration energy is applied to the joints to join them. The metal plates 1, 1 to be connected by the ultrasonic welding include double-sided PVC steel plates, aluminum plates, iron plates,
For example, these materials are used as decorative covering materials such as roofs and eaves as building materials, and the above-described ultrasonic welding is used for connection between building materials. FIG. 2 shows an example of a connection state of the metal plates 1 and 1. The two metal plates 1 and 1 bent into a predetermined sectional shape are connected to a connecting plate 4 having the same material and sectional shape. Connected through. In this case, the metal plate 1 and the connection plate 4
Are welded 5 and then the other metal plate 1 and the connecting plate 4 are overlapped and welded 5. Further, the use of the connection plate 4 may be omitted, and the ends of the two metal plates 1 and 1 may be directly overlapped and welded. In the above ultrasonic welding, a water-containing member 6 is attached to one of the welding tips, specifically, the upper end of the lower welding tip 3 which contacts the lower metal plate 1.
By performing welding in a state where water is contained in the water-containing member 6, a rise in the temperature of the lower welding tip 3 and the lower metal plate 1 is suppressed, thereby preventing the exterior material from being melted. This is to prevent adhesion marks on the surface. The water-containing member 6 is formed so as to cover the upper end of the lower welding tip 3 by using a cloth, and water is applied at the time of welding by artificially using a water injection tool before the start of welding. It is also possible to apply water or arrange a water injection nozzle near the lower welding tip 3 so that water is always injected into the water-containing member 6. The method and timing of water injection may be appropriately selected. What is necessary is just to make a member wet. Next, a welding method will be described with reference to FIG. An overlapped portion of the metal plates 1 and 1 to be connected to each other is sandwiched between an upper welding tip 2 and a lower welding tip 3, and the overlapped portion of the metal plates 1 and 1 is added between the welding tips 2 and 3. By activating the ultrasonic generator in a state of being pressed, ultrasonic vibration energy is applied to the joint to perform the joining. At this time, the superposed metal plates 1, 1
The outer side of the product using the metal plate 1 is brought into contact with the lower welding tip 3 via the water-containing member 6, and the inner side of the product using the metal plates 1, 1 is brought into contact with the upper welding tip 2. To perform ultrasonic welding. By doing so, the surface of the lower metal plate 1 contacted via the water-containing member 6 containing water is
By lowering the temperature of the lower welding tip 3 and cushioning,
It can prevent the exterior material from melting and prevent welding marks from sticking, and the welding marks occur only on the inner side of the product,
A product with no visible welding marks can be obtained from the outside. As described above, according to the present invention, when ultrasonic welding is carried out by sandwiching a superposed portion of a metal plate to be connected by a pair of welding tips, the metal plate of one of the welding tips is used. A water-containing member is attached to the contact part with
Since the welding is performed in a wet state by including water in the water-containing member, the water-containing member containing water suppresses a rise in the temperature of the one-side welding tip and the metal plate abutting on the chip, and is made of cloth. Due to the cushioning property of the water-containing member, it is possible to prevent welding marks from being formed on the surface of the metal plate. Can make it possible to obtain a product in which the connection portion does not show any welding marks from the outside, and it is possible to improve the design and commercial value of the product using the metal plate.
【図面の簡単な説明】 【図１】超音波溶着による溶着状態を示す要部の正面図 【図２】金属板を用いた製品の溶着部分を示す斜視図 【符号の説明】 １ 金属板 ２ 上部溶着チップ ３ 下部溶着チップ ４ 接続板 ６ 含水性部材[Brief description of the drawings] FIG. 1 is a front view of a main part showing a welding state by ultrasonic welding. FIG. 2 is a perspective view showing a welded portion of a product using a metal plate. [Explanation of symbols] 1 metal plate 2 Upper welding tip 3 Lower welding tip 4 Connection plate 6 Water-containing members
───────────────────────────────────────────────────── フロントページの続き (58)調査した分野(Int.Cl.7，ＤＢ名) B23K 20/10 B29C 65/08 ──────────────────────────────────────────────────続 き Continued on front page (58) Field surveyed (Int.Cl. 7 , DB name) B23K 20/10 B29C 65/08
Claims (1)
接続せんとする金属板の重ね合わせた部分を挟んで溶着
する場合に、一方溶着チップの金属板に対する接触部分
に、この接触部分を含む一方溶着チップの端部を覆える
ように布地を用いて形成された含水性部材を取り付けて
おき、この含水性部材に水を含ませて濡れている状態で
溶着を行う金属板の溶着方法。(1) When ultrasonic welding is used to sandwich a metal plate that is to be connected by a pair of welding tips and sandwiched, the metal plate of one of the welding tips is used. To cover the end of the weld tip while including the contact portion
A method of welding a metal plate in which a water-containing member formed using a cloth is attached as described above, and the water-containing member is wetted with water to perform welding.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| JP2000133556A JP3417903B2 (en) | 2000-05-02 | 2000-05-02 | Metal plate welding method |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| JP2000133556A JP3417903B2 (en) | 2000-05-02 | 2000-05-02 | Metal plate welding method |
Publications (2)
| Publication Number | Publication Date |
|---|---|
| JP2001314980A JP2001314980A (en) | 2001-11-13 |
| JP3417903B2 true JP3417903B2 (en) | 2003-06-16 |
Family
ID=18642028
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| JP2000133556A Expired - Lifetime JP3417903B2 (en) | 2000-05-02 | 2000-05-02 | Metal plate welding method |
Country Status (1)
| Country | Link |
|---|---|
| JP (1) | JP3417903B2 (en) |
Families Citing this family (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| JP4625892B2 (en) * | 2004-06-11 | 2011-02-02 | 日産自動車株式会社 | Ultrasonic bonding method and apparatus |
| US8905291B2 (en) * | 2009-12-14 | 2014-12-09 | GM Global Technology Operations LLC | Coulomb damping features using ultrasonic welding |
-
2000
- 2000-05-02 JP JP2000133556A patent/JP3417903B2/en not_active Expired - Lifetime
Also Published As
| Publication number | Publication date |
|---|---|
| JP2001314980A (en) | 2001-11-13 |
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