JP3219283B2 - Welding equipment for metal parts - Google Patents
Welding equipment for metal partsInfo
- Publication number
- JP3219283B2 JP3219283B2 JP19891691A JP19891691A JP3219283B2 JP 3219283 B2 JP3219283 B2 JP 3219283B2 JP 19891691 A JP19891691 A JP 19891691A JP 19891691 A JP19891691 A JP 19891691A JP 3219283 B2 JP3219283 B2 JP 3219283B2
- Authority
- JP
- Japan
- Prior art keywords
- welding
- members
- metal
- pair
- welding electrode
- 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 - Fee Related
Links
Landscapes
- Resistance Welding (AREA)
- Arc Welding In General (AREA)
Description
【０００１】[0001]
【産業上の利用分野】この発明は、金属製部材溶接装置
に関し、特にキャスターの金属製ホイール、いわゆるキ
ャスター芯金等、メッキ処理した金属製部品を構成する
椀型金属製車輪材の溶接において、溶接部分でのメッキ
層の変色やメッキの焼けによる有害煙の発生等を防止で
き、しかも溶接部分の強度及び気密性を向上することが
できる溶接装置に関するものである。BACKGROUND OF THE INVENTION 1. Field of the Invention The present invention relates to a metal member welding apparatus, and more particularly, to welding of a metal wheel for a caster, a so-called caster core, or the like, for welding a bowl-shaped metal wheel material constituting a plated metal part. The present invention relates to a welding apparatus that can prevent discoloration of a plating layer at a welding portion and generation of harmful smoke due to burning of a plating, and can improve strength and airtightness of a welding portion.
【０００２】[0002]
【従来の技術】従来から荷物運搬用の台車等では、中空
の金属製ホイールの外周にゴム部材を焼付けてなる車輪
を有するキャスターが広く用いられており、またこのよ
うなキャスターは機械類や家具等にも使用されている。
ところで、キャスターは、通常数個で台車や機械類等の
全荷重を支えることとなるので、その車輪は相当大きな
荷重に耐えることができる、十分な機械的強度を有する
ものでなければならない。このため上記車輪の金属製ホ
イールは、一対の椀形状の金属製車輪材を溶接により強
固に接合して製作するのが一般的であった。2. Description of the Related Art Conventionally, casters having wheels formed by baking rubber members on the outer periphery of a hollow metal wheel have been widely used in carts for carrying goods, and such casters are used for machinery and furniture. It is also used for such purposes.
By the way, since a few casters usually support the entire load of a bogie, machinery, or the like, the wheels must have sufficient mechanical strength to withstand a considerably large load. For this reason, the metal wheel of the above-mentioned wheel was generally manufactured by firmly joining a pair of bowl-shaped metal wheel materials by welding.
【０００３】図７，図８及び図９は上記金属製ホイール
の溶接方法の従来例を説明するための図であり、図７
(a) 〜(c) 及び図８(a) ，(b) はそれぞれ上記金属製ホ
イールの断面構造及び外観の概略を主な組立段階に分け
て示す斜視図、図９(a) 〜(c)は上記金属製ホイールの
詳細な断面構造を示す断面図で、それぞれ図７(a) 〜
(c) に対応している。図において、１ａ，１ｂは上記金
属製ホイール１を構成する一対の椀型の金属製部材で、
上面が開口した有底のほぼ円筒形状（外径Ｘ）を有し、
底面の中央部には軸受部材４を装着するための部品装着
穴２ａ，２ｂが形成されている。また、３ａ，３ｂはそ
れぞれ上記金属製部材１ａ，１ｂの底面部に形成され
た、ホイール本体を補強するための環状溝、１０ａ，１
０ｂは上記金属製部材１ａ，１ｂの開口周縁部であり、
上記外径Ｘの円筒形状の外周面と一致している（図９
(a) 参照）。また１０ａ1 ，１０ｂ1 は上記開口周縁部
１０ａ，１０ｂの端部にその全周に渡って肉厚を持たせ
てなる肉厚部であり、これはトリム加工をする際にこの
ように肉厚を持たせることができる。FIGS. 7, 8 and 9 are views for explaining a conventional example of a method of welding the above-mentioned metal wheel.
FIGS. 8 (a) to 8 (c) and FIGS. 8 (a) and 8 (b) are perspective views showing the outline of the cross-sectional structure and appearance of the metal wheel divided into main assembling stages, respectively, and FIGS. 9 (a) to 9 (c). ) Are cross-sectional views showing a detailed cross-sectional structure of the metal wheel.
(c) is supported. In the figure, reference numerals 1a and 1b denote a pair of bowl-shaped metal members constituting the metal wheel 1.
It has a substantially cylindrical shape (outside diameter X) with a bottom that has an open upper surface,
Component mounting holes 2a and 2b for mounting the bearing member 4 are formed in the center of the bottom surface. Reference numerals 3a and 3b denote annular grooves formed on the bottom surface of the metal members 1a and 1b, respectively, for reinforcing the wheel body.
0b is an opening peripheral part of the metal members 1a and 1b,
The outer peripheral surface of the cylindrical shape having the outer diameter X coincides with the outer peripheral surface (FIG. 9).
(a)). Reference numerals 10a 1 and 10b 1 denote thick portions formed by making the ends of the opening peripheral portions 10a and 10b have a wall thickness over the entire periphery thereof. Can be provided.
【０００４】すなわち、上記椀型の金属製部材は、所定
寸法の平板を上下の型枠により挟み込んでプレスするこ
とにより形成しており、このプレス直後の金属製部材に
は、その上面開口の周囲につば部分が残っている。この
ためプレス工程後にはこのつば部分を切り落とす，つま
りトリム加工する工程がある。このトリム加工の際、図
９(a) に示すように、上記開口周縁部の外径Ｘより上記
平板の板厚ｔ程度大きい円周（直径Ｘ1 ）に沿って上記
つば部分を切り落とすことにより上記開口周縁部１０ａ
の開口側端部に肉厚部１０ａ1 を形成することができ
る。なおこの肉厚部は図７，図８では図示していない。That is, the above-mentioned bowl-shaped metal member is formed by pressing a flat plate of a predetermined size between upper and lower mold frames and pressing the metal member immediately after this pressing. The brim remains. Therefore, after the pressing step, there is a step of cutting off the brim portion, that is, trimming. At the time of this trimming, as shown in FIG. 9 (a), the collar portion is cut off along a circumference (diameter X 1 ) larger than the outer diameter X of the opening peripheral portion by the thickness t of the flat plate. Opening edge 10a
It is possible to form the thick portion 10a 1 on the opening side end portion of the. This thick portion is not shown in FIGS.
【０００５】また７は上記両金属製部材の開口周縁部の
接触部分，つまり肉厚部１０ａ1 ，１０ｂ1 をＣＯ2 溶
接により接合した溶接部分である。また８ａは該ＣＯ2
溶接を行うための溶接トーチで、自動溶接装置本体（図
示せず）に取付けられている。トーチ本体８ａは、溶接
用ワイヤ８ｃ1 を送り出すとともに、溶接部分を空気か
ら遮断するためのシールドガスを噴射するノズル８ｃ
と、該ノズル８ｃと溶接装置本体側とを接続するケーブ
ル部分８ｂとからなっている。[0005] 7 is a welded portion of the contact portion of the opening edge of both the metal members, that is, the thick portion 10a 1, 10b 1 and joined by CO 2 welding. 8a is the CO 2
A welding torch for performing welding, which is attached to an automatic welding apparatus main body (not shown). Nozzle 8c torch body 8a, as well as feed the welding wire 8c 1, the welding portion to inject a shielding gas for shielding from air
And a cable portion 8b for connecting the nozzle 8c to the welding device main body side.
【０００６】なお上記軸受部材４は、図９(c) に示すよ
うに、左右の軸受部４ａ，４ｂと、これらの軸受部間に
介在するスペーサとしての中間パイプ４４とから構成さ
れている。上記左右の軸受部４ａ，４ｂはそれぞれ、軸
部材（図示せず）と嵌合する内側パイプ４１ａ1 ，４１
ｂ1 と、椀型の金属製部材の部品装着穴２ａ，２ｂと嵌
合する外側パイプ４１ａ2 ，４１ｂ2 と、両パイプ間に
介在するベアリング４２ａ，４２ｂとを有している。ま
た４３ａ1 ，４３ｂ1 はそれぞれ上記外側パイプ４１ａ
2 ，４１ｂ2 に固着された外側の環状カバー、４３
ａ2 ，４３ｂ2 は上記外側パイプ４１ａ2 ，４１ｂ2 に
固着された内側の環状カバーである。As shown in FIG. 9 (c), the bearing member 4 includes left and right bearings 4a and 4b, and an intermediate pipe 44 as a spacer interposed between these bearings. The left and right bearing portions 4a, 4b are respectively provided with inner pipes 41a 1 , 41 fitted with a shaft member (not shown).
and b 1, it has component mounting hole 2a of the bowl-shaped metal member, an outer pipe 41a 2, 41b 2 to 2b mating bearing 42a interposed between the pipe, and 42b. 43a 1 and 43b 1 are the outer pipes 41a, respectively.
2 , 41 b 2 , an outer annular cover fixed to 43, 43
a 2 and 43b 2 are inner annular covers fixed to the outer pipes 41a 2 and 41b 2 .
【０００７】次に溶接方法について説明する。まず、図
７(a) ，(b) に示すように、一対の椀形の金属製部材１
ａ，１ｂを自動溶接装置のチャック（図示せず）により
これらの開口周縁部１０ａ，１０ｂの肉厚部１０ａ1 ，
１０ｂ1 が接触するよう重ね合わせ、図８(b) に示すよ
うに該接触部分をＣＯ2 溶接して接合する。そしてこの
ように溶接処理した金属製ホイール１をメッキ液に浸け
てメッキ処理し、その後上記金属製ホイール１の外周面
にゴム部材を焼付けてタイヤ部分５を形成し、さらに上
記ホイール１の部品装着穴２ａ，２ｂに左右の軸受部４
ａ，４ｂを該両軸受部間に上記中間パイプ４４を介在さ
せて圧入する。これによって上記キャスターの車輪１５
を完成する（図７(c) ）。なおここで中間パイプ４４を
介在させているのは、圧入の際両軸受部４ａ，４ｂが所
定間隔以上接近して金属製部材１ａ，１ｂが変形するの
を防止するためである。そして最後に、軸受部材４に軸
部材（図示せず）を嵌入し、該軸部材に、これを荷物運
搬用の台車等に対して支持するブラケット等（図示せ
ず）を取付けてキャスターを完成する。Next, the welding method will be described. First, as shown in FIGS. 7 (a) and 7 (b), a pair of bowl-shaped metal members 1 are formed.
a, 1b of the automatic welding apparatus chucks These opening edge 10a (not shown), 10b thick portion 10a 1 of
Superimposed to 10b 1 are in contact, joining the contact portions CO 2 welding, as shown in Figure 8 (b). Then, the metal wheel 1 thus welded is immersed in a plating solution to perform a plating process, and thereafter, a rubber member is baked on the outer peripheral surface of the metal wheel 1 to form a tire portion 5, and further, the component mounting of the wheel 1 is performed. The left and right bearings 4 are provided in the holes 2a and 2b.
a and 4b are press-fitted with the intermediate pipe 44 interposed between the two bearing portions. As a result, the wheels 15
Is completed (FIG. 7 (c)). The reason why the intermediate pipe 44 is interposed here is to prevent the metal members 1a, 1b from being deformed due to the two bearings 4a, 4b approaching at a predetermined distance or more during press fitting. Finally, a shaft member (not shown) is fitted into the bearing member 4, and a bracket or the like (not shown) for supporting the shaft member on a carriage for carrying cargo is attached to the shaft member to complete the caster. I do.
【０００８】[0008]
【発明が解決しようとする課題】ところが、このような
従来のキャスターの製造では、一対の椀型金属製部材１
ａ，１ｂの肉厚部１０ａ1 ，１０ｂ1 をこれに沿ってＣ
Ｏ2 溶接により接合して金属製ホイール１を形成してい
るため、全周に渡って均一にかつ精度よく溶接する必要
があり、均一性や精度が悪い場合、例えば溶接部分にピ
ンホール等が生じている場合には、ゴムの焼付処理を良
好に行うことができない等の不具合が生ずるという問題
点があった。However, in the production of such a conventional caster, a pair of bowl-shaped metal members 1 are required.
The thick portions 10a 1 , 10b 1 of a, 1b are cut along the
Since the metal wheel 1 is formed by joining by O 2 welding, it is necessary to weld uniformly and accurately over the entire circumference, and when uniformity or accuracy is poor, for example, a pinhole or the like is formed in a welded portion. If it occurs, there is a problem that a problem such as a failure to perform the rubber baking process properly occurs.
【０００９】また、メッキ処理をアーク溶接前に行うよ
うにすると、アーク溶接時の熱によりメッキ層が変色し
たり、亜鉛メッキの焼けによる有害煙が発生したり、さ
らにはメッキ層が剥がれたりするので、従来は該メッキ
処理をアーク溶接後に行っていたが、この場合上記金属
製ホイール内部の凹部にメッキ液，水洗液等が溜まり、
これらを排出するのが面倒であるという問題があった。[0009] Further, if the plating treatment is performed before the arc welding, the heat of the arc welding causes discoloration of the plated layer, generation of harmful smoke due to burning of the zinc plating, and peeling of the plated layer. Therefore, conventionally, the plating process was performed after arc welding. In this case, a plating solution, a washing solution, and the like accumulate in the recess inside the metal wheel.
There was a problem that it was troublesome to discharge these.
【００１０】この発明は、上記のような問題点を解消す
るためになされたもので、キャスターの金属製ホイール
等、金属製部品を構成する一対の金属製部材を短時間に
かつ均一に、しかも溶接部分以外の加熱を極力抑えて溶
接することができ、これにより溶接の作業性を向上でき
るとともに溶接部分の気密性や強度を高めることがで
き、さらにはメッキ処理を溶接前に行っている場合に
も、メッキ部分の熱による変色，有毒ガスの発生やメッ
キの剥離を防止することができる金属製部材の溶接装置
を得ることを目的とする。The present invention has been made in order to solve the above-mentioned problems, and a pair of metal members constituting a metal part, such as a metal wheel of a caster, can be uniformly formed in a short time. Welding can be performed while minimizing the heating of the parts other than the welded parts, thereby improving the workability of welding and improving the airtightness and strength of the welded parts.In addition, when plating is performed before welding Another object of the present invention is to provide an apparatus for welding metal members capable of preventing discoloration, generation of toxic gas, and peeling of plating due to heat in a plated portion.
【００１１】[0011]
【００１２】[0012]
【００１３】[0013]
【００１４】[0014]
【課題を解決するための手段】 この発明に係る金属製部
材の溶接装置は、上面が開口した有底のほぼ円筒形状を
有する金属製部材を収容する状態にてその内壁面が上記
金属製部材の底部及び開口周縁部の外表面と密着する形
状に形成した部品収容部を有する一対の溶接電極部材を
備えるとともに、該一対の溶接電極部材を相近接するよ
う駆動して、その開口周縁部を接触させて重ね合わせた
一対の金属製部材を各溶接電極部材の部品収容部内に収
容し、この状態で、両金属製部材をその開口周縁部先端
が密着するよう圧接する圧接手段を備え、上記一対の溶
接電極部材の両側部に、それぞれ１次側入力を低電圧，
大電流の２次側出力に変換して該両溶接電極部材に溶接
電流を供給する２台のトランスを配置し、制御手段によ
り、上記圧接手段及び２台のトランスを制御して、上記
両溶接電極部材による上記一対の金属製部材の圧接を行
いつつ、該両溶接電極部材間に所要時間溶接電圧を印加
するようにしたものである。 According to the present invention, there is provided an apparatus for welding a metal member according to the present invention, wherein a metal member having a substantially cylindrical shape having a bottom and an open upper surface is accommodated in an inner wall surface of the metal member. A pair of welding electrode members each having a component housing portion formed in a shape that is in close contact with the bottom surface of the opening and the outer surface of the opening peripheral edge portion, and driving the pair of welding electrode members so as to come close to each other to contact the opening peripheral edge portion. A pair of metal members superposed and overlapped are accommodated in the component accommodating portions of the respective welding electrode members, and in this state, both metal members are provided with pressure contact means for press-contacting the ends of the opening peripheral edges so as to be in close contact with each other. Primary input is low voltage on both sides of the welding electrode
Two transformers for converting the current into a secondary output of a large current and supplying a welding current to the both welding electrode members are arranged, and the control means controls the pressure welding means and the two transformers to control the welding. The welding voltage is applied between the two welding electrode members for a required time while the pair of metal members are pressed against each other by the electrode members.
【００１５】[0015]
【００１６】[0016]
【００１７】[0017]
【００１８】[0018]
【００１９】[0019]
【作用】この 発明においては、金属製部材を収容する部
品収容部を有する、近接及び離反可能な一対の溶接電極
部材と、該溶接電極部材を相近接するよう駆動して、対
向する一対の金属製部材を圧接する圧接手段とを備える
とともに、上記一対の溶接電極部材の両側部に、１次側
入力を低電圧，大電流の２次側出力に変換するトランス
をそれぞれ配置し、一対の金属製部材の各々が一対の溶
接電極部材の部品収容部内に該金属製部材の開口周縁部
の外表面と部品収容部の内壁面とが密着して収容されて
いる状態で、対向する一対の金属製部材をその開口周縁
部が密着するよう圧接しつつ、上記両溶接電極部材間に
低電圧でかつ大電流の電力を短時間に供給するようにし
たので、上記一対の金属製部材の溶接作業を自動化する
ことができ、また金属製部材を上記溶接電極部材上に連
続して供給する装置を付加することにより、キャスター
等に用いる金属製ホイールを大量生産することが可能と
なり、生産コストを低減できる。 According to the present invention, a pair of approaching and releasable welding electrode members each having a component accommodating portion for accommodating a metal member, and a pair of opposing metallic members are driven by bringing the welding electrode members into close proximity to each other. And a transformer for converting a primary input into a low-voltage, high-current secondary output on both sides of the pair of welding electrode members, respectively. In a state in which each of the members is housed in the component housing portion of the pair of welding electrode members in such a manner that the outer surface of the peripheral edge of the opening of the metal member and the inner wall surface of the component housing portion are housed in close contact with each other, While the members are pressed against each other so that the peripheral edges of the openings are in close contact with each other, a low-voltage and large-current power is supplied between the two welding electrode members in a short time. Can be automated and also By the genus members made adding device continuously supplied onto the welding electrode member, it is possible to mass-produce the metal wheel for use in casters, can be reduced the production cost.
【００２０】[0020]
【実施例】以下、この発明の一実施例を図について説明
する。図１は溶接装置の全体構成を示す図、図２及び図
３は該溶接装置の溶接電極部材及びその周辺部分を拡大
して示す正面図及び平面図、図４は上記溶接電極部材の
構造を示す図である。また図５は上記溶接装置の動作を
説明するための図、図６は溶接電流と一対の被溶接部材
にかかる圧接力との関係を示す図、図７はキャスターの
車輪を製作工程別に示す斜視図であり、本発明において
もキャスターの金属製ホイールを構成する金属製部材は
従来例で説明したものと全く同一の構造を有するもので
あるので、本実施例の説明では、上記金属製部材の開口
周縁部の肉厚部については図示していない。DETAILED DESCRIPTION OF THE PREFERRED EMBODIMENTS One embodiment of the present invention will be described below with reference to the drawings. FIG. 1 is a view showing the overall configuration of a welding apparatus, FIGS. 2 and 3 are front views and plan views showing an enlarged view of a welding electrode member of the welding apparatus and peripheral parts thereof, and FIG. FIG. FIG. 5 is a view for explaining the operation of the welding apparatus, FIG. 6 is a view showing a relationship between welding current and a pressing force applied to a pair of members to be welded, and FIG. 7 is a perspective view showing wheels of the caster for each manufacturing process. It is a diagram, also in the present invention, since the metal member constituting the metal wheel of the caster has exactly the same structure as that described in the conventional example, in the description of this embodiment, the metal member The thick part of the peripheral edge of the opening is not shown.
【００２１】図において、１００は上面が開口した有底
のほぼ円筒形状を有する、メッキ処理された一対の金属
製部材１ａ，１ｂの上記開口部同士を相対向させ、該開
口部の周縁部１０ａ，１０ｂを相互に溶接し接合する装
置で、チャンネル鋼を組み合わせてなる架台１０１の中
央に配置された上下一対の溶接電極部材４００ａ，４０
０ｂと、該上側の溶接電極部材４００ａを下方向に駆動
して上記一対の金属製部材１ａ，１ｂを圧接する圧接機
構と、上記架台１０１上の上記溶接電極部材の両側部に
配置された第１，第２のトランス２１０，２２０と、上
記圧接機構及び両トランスを制御する制御装置３００と
を有している。なおここでは、被溶接部材が比較的小さ
い、例えば直径１０センチ程度以下である場合は、トラ
ンスは１台でも良好な溶接が可能であるが、被溶接部材
がそれ以上大きくなると、トランスが１台では、被溶接
部材のトランスと反対側の部分ではトランスからの距離
がトランス側の部分に比べて遠くなる、つまりそれだけ
溶接電流経路のインピーダンスが大きくなるため、溶接
が良好に行われなくなるおそれがある。このため本実施
例では、トランスを溶接電極部材４００ａ，４００ｂの
両側部に配置し、常に良好な溶接ができるようにしてい
る。In FIG. 1, reference numeral 100 denotes a pair of plated metal members 1a and 1b having a substantially cylindrical shape having a bottom with an open upper surface, the openings being opposed to each other, and a peripheral edge 10a of the opening. , 10b are welded and joined to each other, and a pair of upper and lower welding electrode members 400a, 400 arranged at the center of a gantry 101 formed by combining channel steel.
0b, a pressing mechanism for driving the upper welding electrode member 400a downward and pressing the pair of metal members 1a and 1b, and a second pressing mechanism disposed on both sides of the welding electrode member on the gantry 101. It has first and second transformers 210 and 220, and a control device 300 for controlling the press-contact mechanism and both transformers. Here, in the case where the member to be welded is relatively small, for example, a diameter of about 10 cm or less, good welding is possible even with one transformer, but if the member to be welded is larger, one transformer is required. Therefore, in the portion of the member to be welded opposite to the transformer, the distance from the transformer is longer than that of the portion on the transformer side, that is, the impedance of the welding current path increases accordingly, so there is a possibility that welding may not be performed well. . For this reason, in the present embodiment, the transformers are arranged on both sides of the welding electrode members 400a and 400b so that good welding can always be performed.
【００２２】ここで上記各溶接電極部材４００ａ，４０
０ｂはそれぞれ、真ちゅう製の電極固定台１２０ａ，１
２０ｂと、該電極固定台にボルト１１０ａ1，１１０ｂ
1 よりに固着された銅製の溶接電極１１０ａ，１１０ｂ
とから構成されており、上記下側の溶接電極１１０ｂ
は、椀型金属製部材１ｂを収容する状態にて上記金属製
部材１ｂの底部外面及び開口周縁部１０ｂの側面とその
内壁面とが密着する形状に形成した断面凹型の部品収容
部１１１ｂを有しており、その底部中央には部品嵌入穴
１１１ｂ1 が形成されている。なお１２０ｂ3 は、上記
電極固定台１３０ｂに形成されたボルト１１０ｂ1 の挿
通穴である。Here, each of the above welding electrode members 400a, 40
0b is an electrode fixing base 120a, 1 made of brass, respectively.
20b and bolts 110a 1 , 110b
Copper welding electrodes 110a and 110b fixed to 1
And the lower welding electrode 110b
Has a component housing portion 111b having a concave cross section formed in such a shape that the bottom outer surface and the side surface of the opening peripheral portion 10b and the inner wall surface of the metal member 1b are in close contact with each other when the bowl-shaped metal member 1b is housed. and has parts insertion hole 111b 1 is formed in its bottom center. Note 120b 3 are inserted through holes in the bolt 110b 1 which is formed on the electrode fixing base 130b.
【００２３】また上記上側の溶接電極１１０ａも下側の
溶接電極１１０ｂと同様、金属製部材１ａを収容するた
めの部品収容部１１１ａを有し、底面中央には上記部品
嵌入穴１１１ｂ1 より大きな部品挿通穴１１１ａ1 が形
成されている。[0023] Similar to the welding electrode 110b also lower welding electrode 110a of the upper has a component accommodating portion 111a for accommodating the metal member 1a, larger parts than the parts insertion hole 111b 1 on the bottom surface center insertion holes 111a 1 is formed.
【００２４】１０２は上記架台１０１の中央部分に設け
られた部品載置台で、その取付ブラケット部１０２ａを
ボルト１０２ｂにより架台１０１に高さ位置調整可能に
締付け固定してある。該載置台１０２の上面には絶縁性
スペーサ部材１０３を介して、両側に電極接続ブラケッ
ト１３１を有する真ちゅう製の下側プラテン１３０ｂが
載置されている。そしてこの下側プラテン１３０ｂ上に
は上記溶接電極部材４００ｂがボルト１２０ｂ1 により
締付け固定されている。またこの下側プラテン１３０ｂ
は内部に水の循環通路１３４が形成されており、溶接
時、上記循環通路１３４内に水を流すことにより、該プ
ラテン台自体及びこの上に取付けた溶接電極部材４００
ｂの冷却が行われるようになっている。なお１３２及び
１３３はそれぞれ上記循環通路１３４に水を供給及び排
出する給水，排水パイプである。Reference numeral 102 denotes a component mounting table provided at the center of the gantry 101, and its mounting bracket 102a is fastened and fixed to the gantry 101 by bolts 102b so that the height can be adjusted. On the upper surface of the mounting table 102, a lower platen 130b made of brass having electrode connection brackets 131 on both sides is mounted via an insulating spacer member 103. And on the lower platen 130b the welding electrode member 400b is fastened by a bolt 120b 1. The lower platen 130b
Has a water circulation passage 134 formed therein. During welding, water flows through the circulation passage 134 so that the platen table itself and a welding electrode member 400 mounted thereon are formed.
b is cooled. Reference numerals 132 and 133 denote water supply and drain pipes for supplying and discharging water to and from the circulation passage 134, respectively.
【００２５】１５０は上記部品載置台１０２の上方に配
設され、上記圧接機構を構成する空気圧シリンダ装置
で、その慴動ロッド１５１の下端には、電極接続ブラケ
ット１３１を有する上側プラテン１３０ａが取付けられ
ている。この上側プラテン１３０ａの下面には上記溶接
電極部材がボルト１２０ａ1 により締付け固定されてお
り、またこの上側プラテン１３０ａには上記下側プラテ
ン１３０ｂと同様水の循環通路１３４が形成され、該循
環通路１３４の両端には給水及び排水パイプ１３２，１
３３が接続されており、溶接時、上側プラテン自体及び
溶接電極部材４００ａの冷却が行われるようになってい
る。Reference numeral 150 denotes a pneumatic cylinder device which is disposed above the component mounting table 102 and constitutes the press-contact mechanism. An upper platen 130a having an electrode connection bracket 131 is attached to the lower end of the sliding rod 151. ing. This is the lower surface of the upper platen 130a and the welding electrode member is clamped by a bolt 120a 1, and this is the upper platen 130a circulation passage 134 of the same water and the lower platen 130b are formed, the circulation passage 134 Water and drain pipes 132,1 at both ends
The upper platen itself and the welding electrode member 400a are cooled during welding.
【００２６】１４１，１４２はそれぞれ左右のトランス
２１０，２２０の２次側出力を上記下側プラテン１３０
ｂまで導くための平面略コ字型の導体部材で、内部に水
の循環通路１４３が形成されており、該循環通路１４３
の両端開口には給水及び排水チューブ１４３ｃ，１４３
ｄが接続されている。また上記コ字型の導体部材１４２
の上下辺先端の折返し部はボルト１４２ａにより下側プ
ラテン１３０ｂの電極接続ブラケット１３１に固着さ
れ、その背辺部はボルト１４２ａによりトランス２２０
の２次側出力の一方の端子２２３に固着されている。１
４２ｂは各ボルト１４２ａに装着されたワッシャであ
る。なお図２では下側プラテンの右側の導体部材１４２
のみを示しているが、左側のトランス２１０の２次側出
力端子と下側プラテン１３０ｂとの接続もこれと全く同
様にして左側の導体部材１４１により行っている。Reference numerals 141 and 142 denote secondary outputs of the left and right transformers 210 and 220, respectively, to the lower platen 130.
b, a conductor member having a substantially U-shape in a plane for guiding the water to the inside, and a water circulation passage 143 is formed therein.
Water supply and drainage tubes 143c, 143
d is connected. The U-shaped conductor member 142
Of the upper and lower sides are fixed to the electrode connection bracket 131 of the lower platen 130b by bolts 142a, and the back side thereof is connected to the transformer 220 by bolts 142a.
Is fixed to one terminal 223 of the secondary side output. 1
42b is a washer attached to each bolt 142a. In FIG. 2, the conductor member 142 on the right side of the lower platen
Only the connection between the secondary output terminal of the transformer 210 on the left side and the lower platen 130b is performed by the conductor member 141 on the left side in exactly the same manner.
【００２７】また２１４，２２４はそれぞれ左右のトラ
ンス２１０，２２０の２次側出力を上記上側プラテン１
３０ａまで導くための側面逆Ｕ字型のフレキシブル導体
部材で、薄い銅板を複数重ね合わせてなり、該プラテン
１３０ａの上下動に合わせてフレキシブルに曲がるよう
構成されている。各フレキシブル導体部材２１４，２２
４の一端側は、上側プラテン１３０ａの電極接続ブラケ
ット１３１にボルト２１５ａ，２２５ａにより当て板２
１４ａ，２２５ａを介して締付け固定され、その他端側
はそれぞれ左右のトランス２１０，２２０の２次側出力
の他方の端子２１２，２２２に当て板２１４ａ，２２４
ａを介して固着されている。Reference numerals 214 and 224 denote the secondary outputs of the left and right transformers 210 and 220, respectively.
It is a side-reverse U-shaped flexible conductor member for leading up to 30a, which is formed by laminating a plurality of thin copper plates, and is flexibly bent in accordance with the vertical movement of the platen 130a. Each flexible conductor member 214, 22
4 is attached to the electrode connection bracket 131 of the upper platen 130a by bolts 215a and 225a.
14a and 225a, and the other ends are respectively applied to the other terminals 212 and 222 of the secondary outputs of the left and right transformers 210 and 220, respectively.
a.
【００２８】ここで、上記各トランス２１０，２２０の
２次側出力の両端子２１２，２１３，２２２，２２３
は、各トランス本体と絶縁板２１１，２２１を介して上
下位置調整可能に取付けられており、被溶接部材の種類
等に応じて２次側出力の上，下の端子の間隔を調整でき
るようになっている。Here, both terminals 212, 213, 222 and 223 of the secondary side output of each of the transformers 210 and 220 are described.
Is mounted so as to be vertically adjustable via each of the transformer bodies and insulating plates 211 and 221 so that the distance between the upper and lower terminals of the secondary output can be adjusted according to the type of the member to be welded. Has become.
【００２９】そして上記各トランス２１０，２２０及び
空気圧シリンダ１５０は制御装置３００により駆動制御
されるようになっており、具体的には、制御装置３００
は上記空気圧シリンダ１５０により上下一対の溶接電極
部材４００ａ，４００ｂを相近接するよう駆動して、一
対の椀型金属製部材１ａ，１ｂを圧接し、この時の圧接
力が図６に示すように２千〜数千kg重/cm の範囲内の所
定値に達した後、１／６０〔秒／サイクル〕×数〔サイ
クル〕ないし十数〔サイクル〕の間溶接電圧を上記溶接
電極部材４００ａ，４００ｂ間に印加し、その後１／６
０〔秒／サイクル〕×数十〔サイクル〕経過した後圧接
力を解除するよう設定されている。なおここでは、椀型
金属製部材の圧接を開始してから溶接電圧の印加までの
時間は余裕をみて１／６０〔秒／サイクル〕×数十〔サ
イクル〕程度に設定している。Each of the transformers 210 and 220 and the pneumatic cylinder 150 are driven and controlled by a control device 300. Specifically, the control device 300
The pair of upper and lower welding electrode members 400a and 400b are driven close to each other by the pneumatic cylinder 150 to press the pair of bowl-shaped metal members 1a and 1b into contact with each other. After reaching a predetermined value in the range of 1,000 to several thousand kgf / cm 2, the welding voltage is applied for 1/60 [seconds / cycle] × several [cycles] to tens of cycles [cycles]. And then apply 1/6
The setting is such that the pressing force is released after 0 [sec / cycle] × several tens of cycles have elapsed. Here, the time from the start of the pressing of the bowl-shaped metal member to the application of the welding voltage is set to about 1/60 [sec / cycle] × several tens [cycles] to allow for a margin.
【００３０】次にキャスターの製造方法，特にキャスタ
ーの金属製ホイールの溶接方法について説明する。ここ
では被溶接部材である金属製ホイールとして、直径６イ
ンチ，肉厚１．６ｍｍの軟鋼鉄製のものを用いる場合に
ついて述べる。Next, a method of manufacturing a caster, particularly a method of welding a metal wheel of a caster will be described. Here, a case will be described in which a mild steel wheel having a diameter of 6 inches and a wall thickness of 1.6 mm is used as a metal wheel to be welded.
【００３１】本実施例のキャスターの製造方法では、金
属製ホイール１の溶接の前に、該ホイールを構成する一
対の椀型金属製部材１ａ，１ｂに予めメッキ処理を施し
ておく。そして図１に示すように上下の溶接電極部材４
００ａ，４００ｂが離反している初期状態（図５(a) ）
において、下側の溶接電極１１０ｂの部材収容部１１１
ｂ内にメッキ処理した一方の椀型金属製部材１ｂを嵌め
込む（図５(b) ）。次に位置決め用の絶縁性棒１６０を
椀型金属製部材１ｂの部品装着穴１１１ｂ1 を通して下
側の溶接電極１１０ｂの部材嵌入穴１１１ｂ1 に嵌入固
着する（図５(c) ）。その後他方の椀型金属製部材１ａ
をその部品装着穴１１１ａ1 に上記絶縁性棒１６０を挿
通させて下側の椀型金属製部材１ｂ上に配置する（図５
(d) ，(e) ）。このように絶縁性棒１６０を用いること
により、上下の椀型金属製部材１ａ，１ｂを、これらの
各開口周縁部１０ａ，１０ｂが一致するよう簡単に位置
決めすることができる。In the method of manufacturing a caster according to the present embodiment, before welding the metal wheel 1, the pair of bowl-shaped metal members 1a and 1b constituting the wheel are preliminarily plated. Then, as shown in FIG.
Initial state in which 00a and 400b are separated (FIG. 5 (a))
, The member housing portion 111 of the lower welding electrode 110b
One of the plated bowl-shaped metal members 1b is fitted into the plate b (FIG. 5 (b)). Then fitted fixed to the member insertion hole 111b 1 of the lower welding electrode 110b, the insulating rod 160 for positioning through component mounting holes 111b 1 of the bowl-shaped metal member 1b (FIG. 5 (c)). Then the other bowl-shaped metal member 1a
The in component mounting hole 111a 1 is inserted through the insulating rod 160 is disposed on the lower side of the bowl-shaped metal member 1b (FIG. 5
(d), (e)). By using the insulating rod 160 in this manner, the upper and lower bowl-shaped metal members 1a and 1b can be easily positioned such that the opening peripheral portions 10a and 10b coincide with each other.
【００３２】この状態で上記制御装置３００をオンする
と、一連の溶接動作が始まる。すなわち該制御装置３０
０からの制御信号により空気圧シリンダ１５０が駆動し
て上側溶接電極部材４００ａが下降し、下側の溶接電極
部材４００ｂと近接する位置で、溶接電極１１０ａの上
底面と上側の椀型金属製部材１ａの上面とが当接し、上
下一対の椀型金属製部材１ａ，１ｂに加圧力が加えられ
ることとなる。この時該加圧力は図６に示すようにかな
り急峻に２千〜数千kg重/cm に達する。そして加圧開始
から１／６０〔秒／サイクル〕×数十〔サイクル〕程度
経過した時点で、制御装置３００からの制御信号によ
り、左右のトランス２１０，２２０が駆動されてそれぞ
れの２次側に、数万〜数十万アンペア，数〜数十Ｖの電
力を１／６０〔秒／サイクル〕×数〜十数〔サイクル〕
間出力する。When the control device 300 is turned on in this state, a series of welding operations starts. That is, the control device 30
In response to the control signal from 0, the pneumatic cylinder 150 is driven to lower the upper welding electrode member 400a, and at a position close to the lower welding electrode member 400b, the upper bottom surface of the welding electrode 110a and the upper bowl-shaped metal member 1a. Abuts on the upper surface of the pair of upper and lower bowl-shaped metal members 1a and 1b. At this time, as shown in FIG. 6, the applied pressure reaches 2,000 to several thousand kgf / cm2 very steeply. When about 1/60 [sec / cycle] × several tens [cycles] have elapsed since the start of pressurization, the left and right transformers 210 and 220 are driven by the control signal from the control device 300 to the respective secondary sides. , Tens of thousands to hundreds of thousands of amps, power of several to several tens of volts 1/60 [second / cycle] x several to several tens of cycles
Output for a while.
【００３３】この時上記大電流は、右側のトランス２１
０については、その２次側出力端子の一方の端子２１２
から、導体部材２１４，上側プラテン１３０ａ，上側の
溶接電極部材４００ａ，上側の椀型金属製部材１ａ，下
側の椀型金属製部材１ｂ，下側の溶接電極部材４００
ｂ，下側プラテン１３０ｂ，導体部材１４１を通して、
他方の端子２１３に通じる経路で、また左側のトランス
２２０については、その２次側出力端子の一方の端子２
２２から、導体部材２２４，上側プラテン１３０ａ，上
側の溶接電極部材４００ａ，上側の椀型金属製部材１
ａ，下側の椀型金属製部材１ｂ，下側の溶接電極部材４
００ｂ，下側プラテン１３０ｂ，導体部材１４２を通し
て、他方の端子２２３に通じる経路で流れる。この大電
流によって上記上下の椀型金属製部材１ａ，１ｂの開口
周縁部１０ａ，１０ｂの接触部，厳密には該開口周縁部
の肉厚部（図９参照）が発熱，溶解する。At this time, the large current is generated by the transformer 21 on the right side.
For 0, one of the secondary output terminals 212
The conductor member 214, the upper platen 130a, the upper welding electrode member 400a, the upper bowl-shaped metal member 1a, the lower bowl-shaped metal member 1b, and the lower welding electrode member 400
b, the lower platen 130b and the conductor member 141,
On the path leading to the other terminal 213, and for the transformer 220 on the left side, one of the secondary output terminals 2
22, a conductor member 224, an upper platen 130a, an upper welding electrode member 400a, and an upper bowl-shaped metal member 1
a, lower bowl-shaped metal member 1b, lower welding electrode member 4
00b, the lower platen 130b, and the conductor member 142, and flows along a path leading to the other terminal 223. Due to the large current, the contact portions of the upper and lower bowl-shaped metal members 1a and 1b with the opening edges 10a and 10b, more precisely, the thick portions (see FIG. 9) of the openings are heated and melted.
【００３４】そして上記大電流の通電停止後、１／６０
〔秒／サイクル〕×数十〔サイクル〕経過するまで上記
加圧力をそのまま維持し、その後再び上記空気圧シリン
ダ１５０が駆動されて上側の溶接電極部材４００ａが初
期の位置に復帰し、この時点で上記制御装置３００によ
り制御された一連の溶接動作が完了する。なお上記溶接
装置の稼働中は上下のプラテン１３０ａ，１３０ｂや導
体部材１４１，１４２の循環通路１３４，１４３に常に
冷却水を流しておくようにする。After stopping the supply of the large current, 1/60
[Second / cycle] × Several tens of cycles are maintained, and the pressure is maintained as it is. Thereafter, the pneumatic cylinder 150 is driven again to return the upper welding electrode member 400a to the initial position. A series of welding operations controlled by control device 300 is completed. During the operation of the welding device, cooling water is always supplied to the upper and lower platens 130a and 130b and the circulation passages 134 and 143 of the conductor members 141 and 142.
【００３５】その後は、上記溶接が完了した金属製ホイ
ール１を上記絶縁性棒体１６０とともに下側の溶接電極
１１０ｂから取りだし、次の加工処理を行う。具体的に
は、図７(b) に示すように上記溶接が完了した金属製ホ
イール１の外周部にゴム部材を焼付けてタイヤ部分５を
形成し、さらに上記金属製ホイール１中央の部品装着穴
２ａ，２ｂに軸受部材４を装着してキャスターの車輪を
完成する（図７(c) ）。Thereafter, the metal wheel 1 on which the welding has been completed is taken out from the lower welding electrode 110b together with the insulating rod 160, and the following processing is performed. Specifically, as shown in FIG. 7 (b), a rubber member is baked on the outer peripheral portion of the metal wheel 1 on which the welding has been completed to form a tire portion 5, and a component mounting hole in the center of the metal wheel 1 is further formed. The wheel of the caster is completed by mounting the bearing member 4 on 2a and 2b (FIG. 7 (c)).
【００３６】このように本実施例では、予めメッキ処理
した一対の椀型金属製部材１ａ，１ｂを一対の溶接電極
部材４００ａ，４００ｂにより圧接して各椀型金属製部
材の開口周縁部１０ａ，１０ｂを均一に密着させ、この
状態で上記両溶接電極部材に大電流を印加し、さらに通
電停止後、所定時間上記加圧力を維持するようにしたの
で、上記開口周縁部の接触部（肉厚部）には均等に溶接
電流が流れ、つまり接触部分の加熱，溶融が均一に行わ
れることとなり、しかも溶融した部分が凝固する間も上
記接触部分が一定の加圧力により押さえつけられている
ため、均一に凝固していくこととなる。この結果、所定
長さの溶接部分を、熱歪みの発生を招くことなく短時間
にしかも気密性よく溶接することができる。これにより
溶接作業の時間を短縮して、作業性の改善を図ることが
でき、金属製ホイールの品質を向上することができる。
また強度試験器であるアムスラー等により、引っ張り，
押し強度が高く、特に引っ張り試験においては８ｔ以上
の引っ張り強度が実証されている。さらに溶接電流は溶
接部分にのみ集中して流れることとなるので、被溶接部
材の他の部分の発熱を抑えることができ、溶接前にメッ
キ処理してもメッキが変色したり、メッキ焼けにより有
害煙が発生したり、メッキが剥がれたりするのを回避す
ることができ、溶接処理前にメッキ処理する場合の不都
合をなくすことができる。As described above, in the present embodiment, the pair of bowl-shaped metal members 1a and 1b, which have been plated in advance, are pressed against each other by the pair of welding electrode members 400a and 400b, and the opening peripheral portions 10a and 10b of each bowl-shaped metal member are pressed. 10b was brought into uniform contact with each other, a large current was applied to the two welding electrode members in this state, and the pressing force was maintained for a predetermined period of time after the current supply was stopped. Part), the welding current flows evenly, that is, the heating and melting of the contact portion are performed uniformly, and the contact portion is pressed down by a constant pressing force while the molten portion solidifies. It will solidify uniformly. As a result, a welded portion having a predetermined length can be welded in a short time and with good airtightness without causing the occurrence of thermal distortion. Thereby, the time of the welding operation can be shortened, the workability can be improved, and the quality of the metal wheel can be improved.
In addition, it is pulled by the strength tester Amsler etc.
The pressing strength is high, and particularly in a tensile test, a tensile strength of 8 t or more has been demonstrated. In addition, since the welding current flows only in the welded part, heat generation in other parts of the member to be welded can be suppressed. It is possible to avoid generation of smoke and peeling of the plating, and it is possible to eliminate inconvenience in performing plating before welding.
【００３７】なお上記実施例では、被溶接部材である金
属製部材として、直径６インチ，肉厚１．６ｍｍの軟鋼
鉄製のホイールを例にとって説明したが、被溶接部材は
鋼鉄およびステンレス製のものでもよい。但しステンレ
ス製のホイール（直径６インチ，厚さ１．６ｍｍ）で
は、上記説明した溶接条件に比べて、溶接時の圧接力、
及び溶接電流をさらに大きく設定し、また通電時間につ
いてはやや短めに設定する。なお加圧開始から溶接電流
の印加までの時間は、加圧力の増大を考慮して上記溶接
条件に比べて大きめに設定するのがよい。In the above embodiment, a mild steel wheel having a diameter of 6 inches and a thickness of 1.6 mm has been described as an example of a metal member to be welded, but the member to be welded is made of steel and stainless steel. May be. However, in the case of a stainless steel wheel (diameter 6 inches, thickness 1.6 mm), the pressing force at the time of welding,
Further, the welding current is set to be larger, and the energization time is set to be slightly shorter. Note that the time from the start of pressurization to the application of the welding current is preferably set to be longer than the above welding conditions in consideration of the increase in the pressing force.
【００３８】また上記実施例では、上，下の金属製部材
１ａ，１ｂの位置合わせを、それらの部品装着穴１ａ，
２ｂに絶縁性棒１６０を挿入して行っているが、これ
は、上側の溶接電極１１０ａを、金属製部材１ａをその
部品収容部１１１ａ内に真空引きにより吸着できるよう
構成し、金属製部材１ａを溶接電極１１０ａにより保持
することにより、両金属製部材の位置合わせを行うよう
にしてもよい。In the above embodiment, the upper and lower metal members 1a and 1b are aligned with each other in the component mounting holes 1a and 1b.
The insulating rod 160 is inserted into the metal member 1b, and the upper welding electrode 110a is configured so that the metal member 1a can be sucked into the component accommodating portion 111a by evacuation. May be held by the welding electrode 110a so that the positioning of the two metal members is performed.
【００３９】[0039]
【００４０】[0040]
【００４１】[0041]
【００４２】[0042]
【発明の効果】この 発明に係る金属製部材の溶接装置に
よれば、金属製部材を収容する部品収容部を有する近接
及び離反可能な一対の溶接電極部材と、該溶接電極部材
を相近接するよう駆動して、対向する一対の金属製部材
を圧接する圧接手段とを備えるとともに、上記一対の溶
接電極部材の両側部に、１次側入力を低電圧，大電流の
２次側出力に変換するトランスをそれぞれ配置し、一対
の金属製部材の各々が一対の溶接電極部材の部品収容部
内に該金属製部材の開口周縁部の外表面と部品収容部の
内壁面とが密着して収容された状態で、対向する一対の
金属製部材をその開口周縁部が密着するよう圧接しつ
つ、上記溶接電極部材間に低電圧，かつ大電流の電力を
短時間に供給するようにしたので、上記溶接方法におけ
る効果に加えて、上記一対の金属製部材の溶接作業を自
動化することができる効果がある。また金属製部材を上
記溶接電極部材上に連続して供給する装置を付加するこ
とにより、金属製ホイールを大量生産することが可能と
なり、生産コストを低減できるという効果がある。According to the welding apparatus for a metal member according to the present invention, a pair of approaching and releasable welding electrode members each having a component accommodating portion for accommodating the metal member are brought into close proximity to each other. A driving means for pressing a pair of metal members opposed to each other, and converting a primary-side input into a low-voltage, large-current secondary-side output on both sides of the pair of welding electrode members. The transformers were respectively arranged, and each of the pair of metal members was housed in the component housing portion of the pair of welding electrode members in close contact with the outer surface of the opening peripheral portion of the metal member and the inner wall surface of the component housing portion. In this state, a low-voltage and large-current power is supplied between the welding electrode members in a short time while a pair of metal members facing each other are pressed against each other so that the peripheral edges of the openings are in close contact with each other. On top of the effect in the method There is an effect that can automate the welding of the pair of metal members. In addition, by adding a device for continuously supplying a metal member onto the welding electrode member, it is possible to mass-produce the metal wheel and to reduce the production cost.
【図１】溶接装置の全体構成を示す図である。FIG. 1 is a diagram showing an overall configuration of a welding device .
【図２】該溶接装置の溶接電極部材及びその周辺部分を
拡大して示す正面図である。FIG. 2 is an enlarged front view showing a welding electrode member of the welding device and a peripheral portion thereof.
【図３】上記溶接装置の溶接電極部材及びその周辺部分
を拡大して示す平面図である。FIG. 3 is an enlarged plan view showing a welding electrode member of the welding device and a peripheral portion thereof.
【図４】上記溶接電極部材の構造を示す斜視図である。FIG. 4 is a perspective view showing a structure of the welding electrode member.
【図５】上記溶接装置の動作を説明するための図であ
る。FIG. 5 is a diagram for explaining the operation of the welding device.
【図６】上記溶接方法における溶接電流と一対の椀型金
属製部材にかかる圧接力との関係を示す図である。FIG. 6 is a diagram showing a relationship between a welding current and a pressing force applied to a pair of bowl-shaped metal members in the welding method.
【図７】キャスターの車輪を製作する方法を説明するた
めの図である。FIG. 7 is a diagram for explaining a method of manufacturing wheels of a caster.
【図８】一対の椀型金属製部材を溶接により接合して金
属製ホイールを溶接する従来の方法を示す図である。FIG. 8 is a view showing a conventional method of welding a metal wheel by joining a pair of bowl-shaped metal members by welding.
【図９】上記椀型金属製部材の詳細な断面構造を示す図
である。FIG. 9 is a view showing a detailed cross-sectional structure of the bowl-shaped metal member.
───────────────────────────────────────────────────── フロントページの続き (58)調査した分野(Int.Cl.7，ＤＢ名) B23K 11/00 B23K 11/02 B23K 11/16 B23K 37/04 ──────────────────────────────────────────────────続 き Continued on the front page (58) Field surveyed (Int. Cl. 7 , DB name) B23K 11/00 B23K 11/02 B23K 11/16 B23K 37/04
Claims (1)
する、一対の金属製部材の開口周縁部同士を相互に溶接
して両金属製部材を接合する装置であって、 上記金属製部材を収容する状態にてその内壁面が上記金
属製部材の底部及び開口周縁部の外表面と密着する形状
に形成した部品収容部をそれぞれ有する一対の溶接電極
部材と、 該一対の金属製部材を相近接するよう駆動して、その開
口周縁部を接触させて重ね合わせた一対の金属製部材を
各溶接電極部材の部品収容部内に収容し、この状態で両
金属製部材をその開口周縁部先端が密着するよう圧接す
る圧接手段と、 上記一対の金属製部材の両側部に配置され、１次側入力
を低電圧、大電流の２次側出力に変換して該両溶接電極
部材間に溶接電流を供給する２台のトランスと、 上記両溶接電極部材による上記一対の金属製部材の圧接
が行われつつ、該溶接電極部材に所要時間溶接電圧が印
加されるよう、上記圧接手段及び２台のトランスを制御
する制御手段とを備えたことを特徴する金属製部材溶接
装置。 1. A substantially cylindrical shape having a bottom with an open upper surface.
The peripheral edges of the opening of a pair of metal members to each other
And joining the two metal members, wherein the inner wall surface of the metal member is
The shape that is in close contact with the outer surface of the bottom of the metal member and the periphery of the opening
Pair of welding electrodes each having a component receiving portion formed in
The member and the pair of metal members are driven close to each other to open
A pair of metal members superposed by contacting the edge of the mouth
Each welding electrode member is housed in the component housing,
Press the metal member so that the edge of the opening
Press-contact means, and primary-side input devices disposed on both sides of the pair of metal members.
Is converted to a low-voltage, high-current secondary output, and the welding electrodes
Two transformers for supplying welding current between members, and pressure welding of the pair of metal members by the two welding electrode members
While the welding voltage is being applied to the welding electrode member for the required time.
Control the above-mentioned pressing means and two transformers
Metal member characterized by comprising control means for performing welding
apparatus.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| JP19891691A JP3219283B2 (en) | 1991-07-10 | 1991-07-10 | Welding equipment for metal parts |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| JP19891691A JP3219283B2 (en) | 1991-07-10 | 1991-07-10 | Welding equipment for metal parts |
Publications (2)
| Publication Number | Publication Date |
|---|---|
| JPH0515978A JPH0515978A (en) | 1993-01-26 |
| JP3219283B2 true JP3219283B2 (en) | 2001-10-15 |
Family
ID=16399088
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| JP19891691A Expired - Fee Related JP3219283B2 (en) | 1991-07-10 | 1991-07-10 | Welding equipment for metal parts |
Country Status (1)
| Country | Link |
|---|---|
| JP (1) | JP3219283B2 (en) |
Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| US6517213B1 (en) | 1997-03-31 | 2003-02-11 | Idec Izumi Corporation | Indicator device and illumination device |
-
1991
- 1991-07-10 JP JP19891691A patent/JP3219283B2/en not_active Expired - Fee Related
Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| US6517213B1 (en) | 1997-03-31 | 2003-02-11 | Idec Izumi Corporation | Indicator device and illumination device |
Also Published As
| Publication number | Publication date |
|---|---|
| JPH0515978A (en) | 1993-01-26 |
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