JP3002853B2 - Stud welding equipment welding condition switching device - Google Patents

Stud welding equipment welding condition switching device

Info

Publication number
JP3002853B2
JP3002853B2 JP6099498A JP9949894A JP3002853B2 JP 3002853 B2 JP3002853 B2 JP 3002853B2 JP 6099498 A JP6099498 A JP 6099498A JP 9949894 A JP9949894 A JP 9949894A JP 3002853 B2 JP3002853 B2 JP 3002853B2
Authority
JP
Japan
Prior art keywords
fluid pressure
hole
welding
cylinder
work
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
Application number
JP6099498A
Other languages
Japanese (ja)
Other versions
JPH07303967A (en
Inventor
英雄 矢口
Current Assignee (The listed assignees may be inaccurate. Google has not performed a legal analysis and makes no representation or warranty as to the accuracy of the list.)
UD Trucks Corp
Original Assignee
UD Trucks Corp
Priority date (The priority date 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 date listed.)
Filing date
Publication date
Application filed by UD Trucks Corp filed Critical UD Trucks Corp
Priority to JP6099498A priority Critical patent/JP3002853B2/en
Publication of JPH07303967A publication Critical patent/JPH07303967A/en
Application granted granted Critical
Publication of JP3002853B2 publication Critical patent/JP3002853B2/en
Anticipated expiration legal-status Critical
Expired - Fee Related legal-status Critical Current

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Description

【発明の詳細な説明】DETAILED DESCRIPTION OF THE INVENTION

【0001】[0001]

【産業上の利用分野】本発明は、ワークの板厚に応じて
溶接条件を自動的に切り替えるスタッド溶接装置の溶接
条件切替え装置に関する。
BACKGROUND OF THE INVENTION 1. Field of the Invention The present invention relates to a welding condition switching device for a stud welding device for automatically switching welding conditions according to the thickness of a workpiece.

【0002】[0002]

【従来の技術】スタッド溶接は、ワークの溶接部位にス
タッドを近接させた状態で、まずパイロットアークを発
生させ、次いでメインアークを発生させスタッドを溶接
部位に押し付けることでスタッドをワークに溶接接合す
るものであり、このようなスタッド溶接技術に関し、種
々提案されている(例えば特開平5−376号公報、特
開昭63−203278号公報及び特開昭63−235
078号公報等参照)。
2. Description of the Related Art In stud welding, a pilot arc is first generated in a state where a stud is brought close to a welding portion of a work, and then a main arc is generated and the stud is pressed against the welding portion to weld the stud to the work. Various stud welding techniques have been proposed (for example, Japanese Patent Application Laid-Open Nos. 5-376, 63-203278 and 63-235).
No. 078).

【0003】自動車等の組立て部品等にスタッド溶接を
行う場合、車種によっては板厚が異なることがある。ス
タッド溶接時の前記パイロットアーク及びメインアーク
の際の電流値等の溶接条件は板厚によって異なるため、
ワークの板厚が異なる毎に溶接条件を切り替える必要が
ある。ところで、自動車のスタッド溶接対象部品には、
形状が同じで板厚によって孔開け位置の異なる部品があ
る。
[0003] When stud welding is performed on assembled parts of an automobile or the like, the plate thickness may be different depending on the type of vehicle. Since welding conditions such as the current value at the time of the pilot arc and the main arc at the time of stud welding differ depending on the plate thickness,
It is necessary to switch the welding conditions every time the thickness of the work is different. By the way, the parts to be stud welded for automobiles include:
There are parts that have the same shape but differ in the drilling position depending on the plate thickness.

【0004】そこで、このようなワークに対してスタッ
ド溶接を行う場合、従来では、ワークのある部位を特定
し、その特定した部位に孔が有るか無いかを作業者が目
視で確認し、孔の有るワークと無いワークとで溶接条件
を切替えるようにしている。
[0004] Therefore, when performing stud welding on such a work, conventionally, a part where the work is located is specified, and an operator visually checks whether or not there is a hole in the specified part, and the hole is formed. Welding conditions are switched between work with and without work.

【0005】[0005]

【発明が解決しようとする課題】しかしながら、このよ
うに作業者が目視で確認して溶接条件を切り替える方法
では、作業者の孔の有無の誤認や勘違い等により溶接条
件の設定を誤ることがあり、溶接条件の不適合により溶
接不良が発生する。また、ワークの板厚をセンサ等によ
って直接測定し、その測定値に基づいて溶接条件の切替
えを行う方法も考えられるが、板厚を精度良く測定する
には、その測定条件を整える必要があり、設備が複雑と
なり高価になる。また、ワーク形状等によっては厚さ測
定のできない部位もある等の問題がある。
However, in such a method in which the operator visually checks and switches the welding conditions, the setting of the welding conditions may be erroneous due to erroneous recognition or misunderstanding of the presence or absence of a hole by the operator. Insufficient welding conditions cause welding failure. In addition, a method of directly measuring the thickness of the work with a sensor or the like and switching the welding conditions based on the measured value is also conceivable.However, in order to accurately measure the thickness, it is necessary to prepare the measurement conditions. , The equipment becomes complicated and expensive. In addition, there is a problem that the thickness cannot be measured depending on the shape of the work and the like.

【0006】尚、実開平2−97974号公報に、溶接
の際にワークを加圧挟持した時の電極チップの変位量に
よって板厚の違いを検知することで、前記変位量に基づ
いて溶接条件を切り替える構成のスポット溶接装置の溶
接条件切替え装置が開示されているが、スポット溶接と
スタッド溶接とでは、溶接方法が異なり、この技術をそ
のまま本発明が対象としているスタッド溶接に適用する
ことはできない。
Japanese Unexamined Utility Model Publication No. Hei 2-97974 discloses that a difference in plate thickness is detected by a displacement of an electrode tip when a workpiece is pressed and held during welding, and welding conditions are determined based on the displacement. Although a welding condition switching device of a spot welding device having a configuration for switching the welding method is disclosed, the welding method is different between spot welding and stud welding, and this technique cannot be directly applied to the stud welding targeted by the present invention. .

【0007】本発明は上記の事情に鑑みなされたもの
で、板厚に応じて孔開け位置が異なるワークにスタッド
溶接を行う際に、孔の目視確認の必要がなく適切な溶接
条件を確実に設定できて溶接不良の発生を防止できるス
タッド溶接装置の溶接条件切替え装置を提供することを
目的とする。
SUMMARY OF THE INVENTION The present invention has been made in view of the above circumstances, and when performing stud welding on a work in which a hole is to be drilled at different positions depending on the plate thickness, it is not necessary to visually confirm the hole, and appropriate welding conditions are surely determined. An object of the present invention is to provide a welding condition switching device of a stud welding device which can be set and can prevent occurrence of welding failure.

【0008】[0008]

【課題を解決するための手段】このため、本発明では、
回転型溶接治具に板厚によって孔開け位置が異なるワー
クを位置決めしてスタッド溶接する際に、前記ワークの
板厚に応じて溶接条件を切り替えるようにしたスタッド
溶接装置の溶接条件切替え装置において、前記ワークの
同一の所定部位における孔の有無を検知して板厚を検出
する板厚検出手段と、該板厚検出手段の検出出力に基づ
いて溶接条件を切替え制御する制御手段とを備え、板厚
検出手段は、回転型溶接治具のワーク載置用回転基盤に
上下方向にスライド可能に支持され且つ弾性部材で常時
上限位置に弾性付勢され、前記所定部位に孔があるワー
クが載置された時に前記孔を貫通して前記上限位置に保
持され、前記所定部位に孔が無いワークが載置された時
にワークの重量により弾性部材の弾性付勢力に抗して下
降して下限位置に保持される孔検知棒と、ピストンによ
って上下に仕切られた2つの流体圧室を有し前記ピスト
ンに連動して伸縮可能なシリンダロッドを下方に向けて
前記回転基盤の下面に固定された流体圧シリンダと、該
流体圧シリンダの2つの流体圧室に流体圧供給通路を介
して流体圧供給可能に接続する流体圧供給源と、該流体
圧シリンダの前記シリンダロッド先端に固定されシリン
ダロッドの伸縮動作に伴って上下方向に移動する移動体
と、固定部に固定されて前記回転基盤の回転軸を軸支す
る治具台座側に、前記移動体と対面するよう取付けられ
前記移動体の接近・離間動作に応じてオン・オフする近
接スイッチと、前記孔検知棒の下端に機械的に連結し孔
検知棒の下端位置に応じて流体圧を供給する前記流体圧
シリンダの流体圧室を選択的に切り替える流体圧供給通
路切替え手段とを備え、前記近接スイッチのオン・オフ
信号を前記制御手段に出力する構成とした。
Therefore, in the present invention,
When stud welding is performed by positioning a work having a different hole punching position depending on the plate thickness on a rotary welding jig, a welding condition switching device of a stud welding device configured to switch welding conditions according to the plate thickness of the work. A plate thickness detecting unit that detects the presence or absence of a hole in the same predetermined portion of the work to detect a plate thickness, and a control unit that switches and controls welding conditions based on a detection output of the plate thickness detecting unit , Thick
The detection means is mounted on the rotating base for placing the workpiece on the rotary welding jig.
Vertically slidable and supported by elastic members
A work which is elastically biased to the upper limit position and has a hole at the predetermined location
When the rack is placed, it passes through the hole and is kept at the upper limit position.
When a workpiece that is held and has no hole in the predetermined
Lower against the elastic biasing force of the elastic member due to the weight of the workpiece.
The hole detection rod that is lowered and held at the lower
Said piston having two fluid pressure chambers partitioned vertically
With the extendable cylinder rod facing downwards
A fluid pressure cylinder fixed to a lower surface of the rotating base;
Via a fluid pressure supply passage to the two fluid pressure chambers of the fluid pressure cylinder
And a fluid pressure supply source connected so as to be able to supply fluid pressure.
The cylinder is fixed to the tip of the cylinder rod of the pressure cylinder.
A moving body that moves up and down with the expansion and contraction of the darod
And fixed to the fixed portion to support the rotating shaft of the rotating base.
Attached to the jig pedestal side to face the moving body.
A near-on / off state in accordance with the approach / separation operation of the moving body
Contact switch and a hole mechanically connected to the lower end of the hole detection rod.
The fluid pressure that supplies fluid pressure according to the lower end position of the detection rod
Fluid pressure supply passage for selectively switching the fluid pressure chamber of the cylinder
On / off of the proximity switch.
A signal is output to the control means .

【0009】[0009]

【0010】[0010]

【作用】かかる請求項1の構成において、回転型溶接治
具にワークを位置決めしてセットする。板厚検出手段
は、セットされたワークの予め特定された所定部位に孔
が有るか無いかを検知する。制御手段は、板厚検出手段
からの孔の有無に応じた検出出力に基づいてセットされ
たワークの板厚に適合する溶接条件に切替える。
The work is positioned and set on the rotary welding jig. The plate thickness detecting means detects whether or not there is a hole in a predetermined portion of the set work which is specified in advance. The control means switches to welding conditions suitable for the set work piece thickness based on the detection output from the sheet thickness detection means according to the presence or absence of a hole.

【0011】これにより、作業者が目視で孔の有無を確
認するのに比べて信頼性が高くなり、溶接条件を正確に
切替え設定することが可能となる。また、板厚検出手段
では、ワークに孔がある場合には孔検知棒は弾性部材の
弾性付勢力によって孔を貫通して上限位置に保持され、
ワークに孔が無い場合には、ワークの載置に伴い孔検知
棒がワークに突き当たってワークの重量により弾性部材
の弾性付勢力に抗して下降して下限位置に保持される。
かかる孔の有無に応じた孔検知棒位置の違いに伴い機械
的な流体圧供給通路切替え手段が動作して、流体圧供給
源からの流体圧が、流体圧シリンダの2つの流体圧室の
一方に選択供給され、流体圧シリンダのシリンダロッド
が伸縮し、移動体が近接スイッチに対して接近又は離間
する。近接スイッチは、前記移動体の接近又は離間に伴
い、オン又はオフし、このオン又はオフ信号を板厚検出
手段の検出出力として制御手段に出力するようになって
いる。
As a result, the reliability is higher than when an operator visually confirms the presence or absence of a hole, and the welding conditions can be accurately switched and set. In addition, sheet thickness detecting means
Then, if there is a hole in the work, the hole detection rod is held at the upper limit position through the hole by the elastic biasing force of the elastic member,
When there is no hole in the work, the hole detection rod abuts on the work as the work is placed and descends against the elastic urging force of the elastic member due to the weight of the work and is held at the lower limit position.
The mechanical fluid pressure supply passage switching means operates in accordance with the difference in the position of the hole detection rod according to the presence or absence of such a hole, and the fluid pressure from the fluid pressure supply source is reduced to one of the two fluid pressure chambers of the fluid pressure cylinder. , The cylinder rod of the fluid pressure cylinder expands and contracts, and the moving body approaches or separates from the proximity switch. The proximity switch is turned on or off with the approach or separation of the moving body, and outputs the on or off signal to the control means as a detection output of the plate thickness detecting means.

【0012】そして、ワークを載置する回転部分で孔の
有無(即ち、板厚)を検出し、この検出出力を、回転部
分を回転可能に軸支する固定部分側に設けた近接スイッ
チから制御手段に出力する構成であるため、近接スイッ
チと制御手段との間を接続する電気配線が回転部分の回
転動作によって絡まることがない。また、回転部分と固
定部分との間で電気配線が不要であるため、耐久性に問
題があるブラシを使用する必要がなく装置の耐久性が良
好となる。
Then, the presence or absence of a hole (that is, the plate thickness) is detected at the rotating portion on which the work is placed, and the detection output is controlled by a proximity switch provided on the fixed portion side that rotatably supports the rotating portion. Since the output is provided to the means, the electric wiring connecting between the proximity switch and the control means is not entangled by the rotation of the rotating part. Also, since no electrical wiring is required between the rotating part and the fixed part, there is no need to use a brush having a problem in durability, and the durability of the apparatus is improved.

【0013】[0013]

【実施例】以下、本発明の一実施例を図面に基づいて説
明する。図1及び図2に本発明に係るスタッド溶接装置
の溶接条件切替え装置の一実施例を示す。図1及び図2
において、例えば、床面1に、治具台座2が固定され、
該治具台座2には、固定軸3を介して回転軸4が回転自
由に軸支されており、また、治具台座2上面には、ブラ
ケット5を介して近接スイッチ6が取付けられている。
An embodiment of the present invention will be described below with reference to the drawings. 1 and 2 show one embodiment of a welding condition switching device for a stud welding device according to the present invention. 1 and 2
In, for example, the jig pedestal 2 is fixed to the floor surface 1,
A rotary shaft 4 is rotatably supported on the jig pedestal 2 via a fixed shaft 3, and a proximity switch 6 is mounted on the upper surface of the jig pedestal 2 via a bracket 5. .

【0014】前記回転軸4の上端部には、図2に示すよ
うな円形のワーク載置用の治具回転基盤7が固定されて
いる。治具回転基盤7の上面周囲及び中央部には、ワー
ク8を治具回転基盤7上方に支持する支承受け9が複数
設けられている。これら支承受け9は、ワーク8の形状
に応じてその位置を変化できる構成である。また、治具
回転基盤7の中央部には、ワーク8の孔の有無を検知す
る孔検知ユニット10が設けられている。
At the upper end of the rotary shaft 4, a circular jig rotary base 7 for mounting a work as shown in FIG. 2 is fixed. A plurality of bearings 9 for supporting the work 8 above the jig rotating base 7 are provided around the upper surface of the jig rotating base 7 and at the center thereof. These bearings 9 are configured such that their positions can be changed according to the shape of the work 8. A hole detection unit 10 for detecting the presence or absence of a hole in the work 8 is provided at the center of the jig rotating base 7.

【0015】前記孔検知ユニット10は、図3に示すよう
に、治具回転基盤7上面に固定した基台11と、該基台11
に直立して固定されたブラケット12と、該ブラケット12
をその上下方向にスライド自由に貫通し、中間部に鍔部
13Aを有する孔検知棒13と、該孔検知棒13の鍔部13Aと
ブラケット12との間に介装され鍔部13Aを介して常時孔
検知棒13を上方に弾性付勢する弾性部材としてのコイル
スプリング14と、孔検知棒13が貫通し孔検知棒13のスラ
イド動作を案内する円筒状のガイド部材15と、基台11に
固定され孔検知棒13の下端部にレバー16を介して連結す
るメカニカルバルブ17とを備えて構成されている。前記
レバー16の一端は、孔検知棒13下端に回動自由に連結さ
れ、他端は図4に示すように流体圧であるエアを供給す
る後述のエア供給通路32に介装されるメカニカルバルブ
17の軸部17aに固定されている。
As shown in FIG. 3, the hole detecting unit 10 includes a base 11 fixed to the upper surface of the jig rotating base 7 and a base 11.
A bracket 12 fixed upright on the bracket 12;
Slidably penetrates vertically in the vertical direction, and a flange
A hole detecting rod 13 having 13A and a resilient member interposed between the flange 13A of the hole detecting rod 13 and the bracket 12 and constantly elastically urging the hole detecting rod 13 upward through the flange 13A. A coil spring 14, a cylindrical guide member 15 through which the hole detection rod 13 penetrates and guides the slide operation of the hole detection rod 13, is fixed to the base 11 and connected to a lower end of the hole detection rod 13 via a lever 16. And a mechanical valve 17. One end of the lever 16 is rotatably connected to the lower end of the hole detection rod 13, and the other end is a mechanical valve interposed in an air supply passage 32, which supplies fluid pressure air, which will be described later, as shown in FIG.
17 is fixed to the shaft portion 17a.

【0016】図3(A)のようにワーク8に孔8aがあ
る場合、孔検知棒13はコイルスプリング14の弾性付勢力
によって孔8aを貫通して上限位置に保持され、図3
(B)のように、ワーク8に孔が無い場合、孔検知棒13
はワーク8の重量によってコイルスプリング14の弾性付
勢力に抗して下降し下限位置に保持される。そして、か
かる孔検知棒13の保持位置に応じてレバー16が回動し、
メカニカルバルブ17を後述のように動作させる。
When the workpiece 8 has a hole 8a as shown in FIG. 3A, the hole detecting rod 13 is held at the upper limit position through the hole 8a by the elastic biasing force of the coil spring 14.
If there is no hole in the work 8 as shown in FIG.
Is lowered against the elastic urging force of the coil spring 14 by the weight of the work 8 and is held at the lower limit position. Then, the lever 16 rotates according to the holding position of the hole detection rod 13, and
The mechanical valve 17 is operated as described later.

【0017】また、治具回転基盤7の下面には、図1及
び図2に示すように、2つの流体圧シリンダとしてのエ
アシリンダ21が固定されている。各エアシリンダ21内
は、図4に示すようにピストン22によって2つの流体圧
室としてのエア室23,24に仕切られており、ピストン22
にシリンダロッド25が固定されている。このシリンダロ
ッド25はピストン22の上下動に伴って伸縮する。エアシ
リンダ21は、前記シリンダロッド25が下方に向くよう固
定されており、シリンダロッド25の先端部には、回転軸
4を囲むリング状の移動体としての感知板26が固定さ
れ、該感知板26は、シリンダロッド25と一体に上下動
し、対面して配置された前記近接スイッチ6に対して離
間又は接近するようになっている。
As shown in FIGS. 1 and 2, an air cylinder 21 as two fluid pressure cylinders is fixed to the lower surface of the jig rotating base 7. The interior of each air cylinder 21 is divided into two air chambers 23 and 24 as two fluid pressure chambers by a piston 22 as shown in FIG.
Is fixed to the cylinder rod 25. The cylinder rod 25 expands and contracts as the piston 22 moves up and down. The air cylinder 21 is fixed so that the cylinder rod 25 faces downward. At the tip of the cylinder rod 25, a sensing plate 26 as a ring-shaped moving body surrounding the rotating shaft 4 is fixed. The reference numeral 26 moves up and down integrally with the cylinder rod 25, and separates or approaches the proximity switch 6 arranged facing the same.

【0018】次に、図4に前記エアシリンダ21のエア供
給経路を示し説明する。エアシリンダ21のエア室23,24
と流体圧供給源としてのエア圧源31とは、前述したエア
供給通路32によって接続されている。このエア供給通路
32には、前述のメカニカルバルブ17と流体圧供給通路切
替え手段としての切替えバルブ33が介装されており、該
切替えバルブ33は、メカニカルバルブ17を介して供給さ
れるエア圧源31から信号圧によって切替え動作して、
エアシリンダ21のエア室23,24へのエアの供給を選択的
に切替えるものである。そして、このエア圧の供給の切
替えに伴うシリンダロッド25の上下動により感知板26が
近接スイッチ6に接近又は離間することで、近接スイッ
チ6からオン又はオフ信号が発生し、このオン又はオフ
信号は制御手段としてのコントローラ34に入力され、コ
ントローラ34は、この入力信号に基づいてワーク8の板
厚を判断して溶接条件を自動的に切替え設定するように
なっている。ここで、エア圧源31は床面1側に設置され
おり、治具回転基盤7側のエアシリンダ21,21までのエ
ア供給通路32は、固定部と回転部の境界部分で互いに回
転自由に接続される構成であり、接続部はOリングでシ
ールすればよい。前記孔検知ユニット10、エアシリンダ
21、感知板26、近接スイッチ6、切替えバルブ33及びエ
ア圧源31を含んで板圧検出手段が構成されている。
Next, FIG. 4 shows the air supply path of the air cylinder 21 and will be described. Air chambers 23, 24 of air cylinder 21
The air pressure source 31 serving as a fluid pressure supply source is connected by the air supply passage 32 described above. This air supply passage
The mechanical valve 17 and the switching valve 33 as a fluid pressure supply passage switching means are interposed in the switching valve 32, and the switching valve 33 receives a signal from the air pressure source 31 supplied through the mechanical valve 17. Switching operation by pressure,
The air supply to the air chambers 23 and 24 of the air cylinder 21 is selectively switched. When the sensing plate 26 approaches or separates from the proximity switch 6 due to the vertical movement of the cylinder rod 25 accompanying the switching of the supply of the air pressure, an on or off signal is generated from the proximity switch 6, and the on or off signal is generated. Is input to a controller 34 as a control means. The controller 34 determines the thickness of the work 8 based on the input signal and automatically switches and sets the welding conditions. Here, the air pressure source 31 is installed on the floor surface 1 side, and the air supply passage 32 to the air cylinders 21, 21 on the jig rotating base 7 side is freely rotatable with each other at the boundary between the fixed part and the rotating part. It is a configuration to be connected, and the connection portion may be sealed with an O-ring. The hole detection unit 10, an air cylinder
The plate pressure detecting means includes the 21, the sensing plate 26, the proximity switch 6, the switching valve 33, and the air pressure source 31.

【0019】尚、図4においては、孔検知ユニット10、
エアシリンダ21、感知板26等の構成は概略的に示してあ
る。次に図5及び図6に本発明装置に適用されるワーク
8を示す。図に示すワーク8は、自動車のドア部であ
り、図5に示すワーク8Aは、所定部位としての中央部
に部品取付け用の孔8aが設けられた板厚の薄いものを
示す。一方、図6のワーク8Bは、ワーク8Aにおいて
孔8aが設けられる同じ位置に部品取付け用の孔が無い
板厚の厚いものを示す。
In FIG. 4, the hole detecting unit 10,
The configurations of the air cylinder 21, the sensing plate 26, and the like are schematically illustrated. Next, FIGS. 5 and 6 show a work 8 applied to the apparatus of the present invention. The work 8 shown in the figure is a door part of an automobile, and the work 8A shown in FIG. 5 is a work 8A having a thin plate provided with a hole 8a for attaching a component at a central portion as a predetermined portion. On the other hand, the work 8B shown in FIG. 6 is a thick work having no hole for component attachment at the same position where the hole 8a is provided in the work 8A.

【0020】次に、本実施例装置の溶接条件切替え動作
を説明する。まず、ワーク8を図7に示すように、治具
回転基盤7上に支承受け9を介して載置する。この時
に、孔が無いワーク8Bの場合には、孔検知棒13は、図
3(B)に示すようにワーク8Bの重量によってコイル
スプリング14の弾性力に抗して下降し下限位置に保持さ
れる。この状態では、メカニカルバルブ17はオフ状態で
図4のポジションをとり、エア圧源31からメカニカルバ
ルブ17を介して切替えバルブ33へはエア圧が供給され
ず、切替えバルブ33は図4のポジションをとる。これに
より、エア圧源31からのエアは切替えバルブ33を介して
エアシリンダ21のエア室23側に供給される一方、エア室
24内のエアは大気に開放される。かかるエア圧の供給に
よりエアシリンダ21のピストン22が図4中実線で示すよ
うに下方に移動しシリンダロッド25を介して感知板26も
図4中実線で示すように下方に移動し近接スイッチ6に
接近する。近接スイッチ6は、感知板の接近によりオン
となる。近接スイッチ6のオン信号はコントローラ34に
入力される。コントローラ34は近接スイッチ6のオン信
号が入力すると、載置されたワークが孔無しのワーク8
Bと判断して板厚が厚い場合の溶接条件に切替え設定す
る。
Next, the welding condition switching operation of the present embodiment will be described. First, as shown in FIG. 7, the work 8 is placed on the jig rotating base 7 via the support 9. At this time, in the case of the work 8B having no hole, the hole detecting rod 13 is lowered against the elastic force of the coil spring 14 by the weight of the work 8B and held at the lower limit position as shown in FIG. You. In this state, the mechanical valve 17 takes the position of Figure 4 in the OFF state, the mechanical bar from the air pressure source 31
No air pressure is supplied to the switching valve 33 via the lube 17, and the switching valve 33 assumes the position shown in FIG. Thereby, the air from the air pressure source 31 is supplied to the air chamber 23 side of the air cylinder 21 via the switching valve 33, while the air chamber
The air in 24 is open to the atmosphere. The supply of the air pressure causes the piston 22 of the air cylinder 21 to move downward as indicated by the solid line in FIG. 4, and the sensing plate 26 also moves downward via the cylinder rod 25 as indicated by the solid line in FIG. Approach. The proximity switch 6 is turned on when the sensing plate approaches. The ON signal of the proximity switch 6 is input to the controller 34. When the ON signal of the proximity switch 6 is input, the controller 34 determines that the mounted workpiece is a workpiece 8 having no holes.
The welding condition is determined to be B, and the welding condition for the thicker plate is switched and set.

【0021】一方、孔8aが有るワーク8Aが載置され
た場合は、孔検知棒13は、図3(A)に示すように、コ
イルスプリング14の弾性力によってワーク8Aの孔8a
を貫通して上限位置に保持される。この状態では、メカ
ニカルバルブ17はオン状態で図4とは反対のポジション
(図中下側の位置)をとり、エア圧源31からメカニカル
バルブ17を介して切替えバルブ33へ信号圧としてエア圧
が供給され、切替えバルブ33は図4とは反対のポジショ
ン(図中左側の位置)をとる。これにより、エア圧源31
からのエアは切替えバルブ33を介してエアシリンダ21の
エア室24側に供給される一方、エア室23内のエアは大気
に開放される。かかるエア圧の供給によりエアシリンダ
21のピストン22が図4中破線で示すように上方に移動し
シリンダロッド25を介して感知板26も図4中破線で示す
ように上方に移動して近接スイッチ6から離間する。近
接スイッチ6は、感知板の離間によりオフとなる。近接
スイッチ6のオフ信号はコントローラ34に入力される。
コントローラ34は近接スイッチ6のオフ信号が入力する
と、載置されたワークが孔有りのワーク8Aと判断して
板厚が薄い場合の溶接条件に切替え設定する。溶接条件
が設定された後は、治具回転基盤7を例えば手動で回転
させながら溶接機によって所定位置にスタッド溶接を行
う。
On the other hand, when the work 8A having the hole 8a is placed, the hole detection rod 13 is moved by the elastic force of the coil spring 14 as shown in FIG.
And is held at the upper limit position. In this state, the mechanical valve 17 takes the opposite position (lower side in the figure of the position) and FIG. 4 in the on state, the mechanical from the air pressure source 31
Air pressure is supplied as a signal pressure to the switching valve 33 via the valve 17, and the switching valve 33 takes a position opposite to that in FIG. Thereby, the air pressure source 31
Is supplied to the air chamber 24 side of the air cylinder 21 via the switching valve 33, while the air in the air chamber 23 is released to the atmosphere. By supplying such air pressure, the air cylinder
The piston 22 moves upward as shown by the broken line in FIG. 4, and the sensing plate 26 also moves upward through the cylinder rod 25 as shown by the broken line in FIG. The proximity switch 6 is turned off by separating the sensing plate. The off signal of the proximity switch 6 is input to the controller 34.
When the OFF signal of the proximity switch 6 is input, the controller 34 determines that the placed work is the work 8A having a hole, and switches and sets the welding conditions when the plate thickness is small. After the welding conditions are set, stud welding is performed at a predetermined position by a welding machine while rotating the jig rotating base 7 manually, for example.

【0022】以上のように、板厚によって同一の特定部
位に孔が有ったり無かったりするワーク8にスタッド溶
接する場合に、前記特定部位の孔の有無を孔検知ユニッ
ト10によって検知し、この検知信号に基づいて板厚に応
じた溶接条件を自動的に切替え設定する構成とすれば、
ワーク8を載置するだけで板厚に応じて適切な溶接条件
が自動的に切替え設定されるので、従来のように作業者
の孔8aの目視による確認によって溶接条件を切替え設
定する場合に比べて、溶接条件の誤設定がなくなり、溶
接条件の不適合による溶接不良の発生を防止でき、品質
向上が図れる。また、板厚を直接測定する装置を設けた
場合に比べて構造が簡単であり、設備費用も安価である
とうい効果を有する。
As described above, when stud welding is performed to the work 8 having or not having a hole in the same specific portion depending on the plate thickness, the presence or absence of a hole in the specific portion is detected by the hole detection unit 10. If the configuration is such that the welding conditions according to the plate thickness are automatically switched and set based on the detection signal,
Since the welding conditions are automatically switched and set according to the plate thickness just by placing the work 8, the welding conditions are switched and set by visually checking the hole 8a of the operator as in the conventional case. As a result, erroneous setting of welding conditions is eliminated, and occurrence of welding defects due to mismatching of welding conditions can be prevented, and quality can be improved. In addition, the structure is simpler than when a device for directly measuring the plate thickness is provided, and there is an effect that the equipment cost is low.

【0023】また、回転部分に設けた孔検知ユニット10
による孔検知出力を、固定側に設けた無接点式の近接ス
イッチ6を介してコントローラ34に入力する構成とした
ので、回転部分と固定部分との間に電気配線を設ける必
要がなく、ワーク8を載置する回転部分側の回転によっ
て近接スイッチ6とコントローラ34とを接続する電気配
線が回転軸4等に絡まることがない。また、耐久性に問
題のあるブラシを用いて回転部分と固定部分との間の電
気接続構造をとる必要がないので、溶接条件切替え装置
の耐久性が良好となる。
The hole detecting unit 10 provided in the rotating part
Is input to the controller 34 via the non-contact type proximity switch 6 provided on the fixed side, so that there is no need to provide electrical wiring between the rotating part and the fixed part, and the work 8 The electric wiring connecting the proximity switch 6 and the controller 34 does not become entangled with the rotating shaft 4 or the like due to the rotation of the rotating part on which is mounted. Further, since there is no need to use a brush having a problem in durability to establish an electrical connection structure between the rotating portion and the fixed portion, the durability of the welding condition switching device is improved.

【0024】更に、感知板26をリング状としたので、治
具回転基盤7の回転位置に関係なく常時、感知板26の位
置を近接スイッチ6で検知可能である。
Further, since the sensing plate 26 is formed in a ring shape, the position of the sensing plate 26 can always be detected by the proximity switch 6 regardless of the rotational position of the jig rotating base 7.

【0025】[0025]

【発明の効果】以上説明したように請求項1の発明によ
れば、板厚に応じて孔開け位置が異なるワークにスタッ
ド溶接を行う場合に、ワークの孔の有無を検知して板厚
を判断し溶接条件を自動的に切替える構成としたので、
作業者の目視によって孔の確認を行う従来方法に比べて
溶接条件の切替え設定の信頼性が向上し、適切な溶接条
件の設定により溶接不良の発生を防止でき、品質向上が
図れる。また、板厚を直接測定する装置を設けた場合に
比べて構造が簡単であり、設備費用も安価であるとうい
効果を有する。
As described above, according to the first aspect of the present invention, when stud welding is performed on a workpiece having a hole to be drilled at a different position depending on the thickness of the workpiece, the presence or absence of a hole in the workpiece is detected to reduce the thickness of the workpiece. It is configured to judge and automatically switch the welding conditions,
Compared with the conventional method of visually confirming holes by an operator, the reliability of switching setting of welding conditions is improved, and by setting appropriate welding conditions, occurrence of poor welding can be prevented and quality can be improved. In addition, the structure is simpler than when a device for directly measuring the plate thickness is provided, and there is an effect that the equipment cost is low.

【0026】また、回転部分側での孔の有無検知出力を
流体圧シリンダを介して移動体の移動動作に変換し、こ
の移動体の位置を固定側に設けた無接点式の近接スイッ
チによって検知して溶接条件設定用の制御手段への電気
信号に変換する構成としたので、電気配線が固定部分側
のみで済み、回転部分に電気配線が絡まる心配がない。
また、回転部分と固定部分との間で電気配線が不要であ
るため、耐久性に問題があるブラシを使用する必要がな
く溶接条件切替え装置の耐久性を良好にできる。
[0026] Also, the hole-detection output in rotating portion side into a movement of the movable member through a fluid pressure cylinder, proximity switches contactless provided the location of the mobile to the fixed side And the electric signal is converted into an electric signal to the control means for setting the welding conditions, so that the electric wiring only needs to be on the fixed part side, and there is no fear that the electric wiring is entangled in the rotating part.
Also, since no electrical wiring is required between the rotating part and the fixed part, it is not necessary to use a brush having a problem in durability, and the durability of the welding condition switching device can be improved.

【図面の簡単な説明】[Brief description of the drawings]

【図1】本発明に係るスタッド溶接装置の溶接条件切替
え装置の一実施例を示す概略構成図
FIG. 1 is a schematic configuration diagram showing one embodiment of a welding condition switching device of a stud welding device according to the present invention.

【図2】同上実施例の治具回転基盤の平面図FIG. 2 is a plan view of the jig rotating base of the embodiment.

【図3】同上実施例の孔検知ユニット部分を示す図FIG. 3 is a diagram showing a hole detection unit of the embodiment.

【図4】同上実施例のエア供給経路を示す図FIG. 4 is a diagram showing an air supply path of the embodiment.

【図5】孔の有るワークの図FIG. 5 is a diagram of a workpiece having a hole.

【図6】孔の無いワークの図FIG. 6 is a diagram of a workpiece without holes.

【図7】ワークを治具回転基盤上に載置した状態を示す
FIG. 7 is a diagram showing a state in which a work is placed on a jig rotating base;

【符号の説明】[Explanation of symbols]

2 治具台座 4 回転軸 6 近接スイッチ 7 治具回転基盤 8 ワーク 8a 孔 9 支承受け 10 孔検知ユニット 13 孔検知棒 14 コイルスプリング 17 メカニカルバルブ 21 エアシリンダ 25 シリンダロッド 26 感知板 31 エア圧源 32 エア供給通路 33 切替えバルブ 34 コントローラ 2 Jig base 4 Rotation axis 6 Proximity switch 7 Jig rotation base 8 Work 8a Hole 9 Bearing 10 Hole detection unit 13 Hole detection rod 14 Coil spring 17 Mechanical valve 21 Air cylinder 25 Cylinder rod 26 Sensing plate 31 Air pressure source 32 Air supply passage 33 Switching valve 34 Controller

───────────────────────────────────────────────────── フロントページの続き (56)参考文献 特開 平4−190101(JP,A) 特開 平2−11228(JP,A) 特開 昭60−24223(JP,A) 特開 平4−279280(JP,A) 特開 平2−182345(JP,A) 特開 平7−276060(JP,A) 特開 平5−277896(JP,A) 実開 平4−39581(JP,U) 実開 平5−60671(JP,U) 実開 昭48−28589(JP,U) (58)調査した分野(Int.Cl.7,DB名) B23K 9/20 B23K 9/095 ──────────────────────────────────────────────────続 き Continuation of front page (56) References JP-A-4-190101 (JP, A) JP-A-2-11228 (JP, A) JP-A-60-24223 (JP, A) JP-A-4-190 279280 (JP, A) JP-A-2-182345 (JP, A) JP-A-7-276060 (JP, A) JP-A-5-277896 (JP, A) JP-A-4-39581 (JP, U) Japanese Utility Model Application Hei 5-60671 (JP, U) Japanese Utility Model Application Showa 48-28589 (JP, U) (58) Fields investigated (Int. Cl. 7 , DB name) B23K 9/20 B23K 9/095

Claims (1)

(57)【特許請求の範囲】(57) [Claims] 【請求項1】 回転型溶接治具に板厚によって孔開け位
置が異なるワークを位置決めしてスタッド溶接する際
に、前記ワークの板厚に応じて溶接条件を切り替えるよ
うにしたスタッド溶接装置の溶接条件切替え装置におい
て、 前記ワークの同一の所定部位における孔の有無を検知し
て板厚を検出する板厚検出手段と、 該板厚検出手段の検出出力に基づいて溶接条件を切替え
制御する制御手段と、 を備え 前記板厚検出手段は、回転型溶接治具のワーク載置用回
転基盤に上下方向にスライド可能に支持され且つ弾性部
材で常時上限位置に弾性付勢され、前記所定部位に孔が
あるワークが載置された時に前記孔を貫通して前記上限
位置に保持され、前記所定部位に孔が無いワークが載置
された時にワークの重量により弾性部材の弾性付勢力に
抗して下降して下限位置に保持される孔検知棒と、 ピストンによって上下に仕切られた2つの流体圧室を有
し前記ピストンに連動して伸縮可能なシリンダロッドを
下方に向けて前記回転基盤の下面に固定された流体圧シ
リンダと、 該流体圧シリンダの2つの流体圧室に流体圧供給通路を
介して流体圧供給可能に接続する流体圧供給源と、 該流体圧シリンダの前記シリンダロッド先端に固定され
シリンダロッドの伸縮動作に伴って上下方向に移動する
移動体と、 固定部に固定されて前記回転基盤の回転軸を軸支する治
具台座側に、前記移動体と対面するよう取付けられ前記
移動体の接近・離間動作に応じてオン・オフする近接ス
イッチと、 前記孔検知棒の下端に機械的に連結し孔検知棒の下端位
置に応じて流体圧を供給する前記流体圧シリンダの流体
圧室を選択的に切り替える流体圧供給通路切替え手段と
を備え、前記近接スイッチのオン・オフ信号を、前記制
御手段に出力する構成である ことを特徴とするスタッド
溶接装置の溶接条件切替え装置。
1. A stud welding apparatus for switching a welding condition according to a thickness of a workpiece when positioning a workpiece having a different drilling position according to the thickness of the rotary welding jig and performing stud welding. In the condition switching device, a thickness detecting means for detecting the presence or absence of a hole in the same predetermined portion of the work to detect a thickness, and a control means for switching and controlling welding conditions based on a detection output of the thickness detecting means. When, wherein the thickness detecting means, the rotary weld fixture workpiece mounting times
Elastic part supported vertically slidably on the rolling base
The material is always elastically biased to the upper limit position, and a hole is
When a certain work is placed, it penetrates the hole and the upper limit
A workpiece that is held in position and has no hole at the predetermined site
The elastic member's elastic biasing force
It has a hole detection rod that descends and is held at the lower limit position, and two fluid pressure chambers that are partitioned up and down by a piston.
And a cylinder rod that can be extended and contracted in conjunction with the piston
A fluid pressure plate fixed downward to the lower surface of the rotating base
A fluid pressure supply passage between the cylinder and the two fluid pressure chambers of the fluid pressure cylinder.
A fluid pressure supply source connected so as to be able to supply fluid pressure via the fluid pressure cylinder, and fixed to the tip of the cylinder rod of the fluid pressure cylinder
Moves up and down as the cylinder rod expands and contracts
A movable body, and a fixture fixed to the fixed portion to support the rotating shaft of the rotating base.
Mounted on the tool base side to face the moving body,
Proximity switch that turns on and off according to the approaching / separating movement of moving objects
Switch, and mechanically connected to the lower end of the hole detection rod and the lower end of the hole detection rod.
Fluid in the hydraulic cylinder that supplies fluid pressure according to the position
Fluid pressure supply passage switching means for selectively switching the pressure chamber;
Controlling the on / off signal of the proximity switch to
Welding condition switching device of the stud welding device, characterized in that the arrangement for outputting the control means.
JP6099498A 1994-05-13 1994-05-13 Stud welding equipment welding condition switching device Expired - Fee Related JP3002853B2 (en)

Priority Applications (1)

Application Number Priority Date Filing Date Title
JP6099498A JP3002853B2 (en) 1994-05-13 1994-05-13 Stud welding equipment welding condition switching device

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
JP6099498A JP3002853B2 (en) 1994-05-13 1994-05-13 Stud welding equipment welding condition switching device

Publications (2)

Publication Number Publication Date
JPH07303967A JPH07303967A (en) 1995-11-21
JP3002853B2 true JP3002853B2 (en) 2000-01-24

Family

ID=14248959

Family Applications (1)

Application Number Title Priority Date Filing Date
JP6099498A Expired - Fee Related JP3002853B2 (en) 1994-05-13 1994-05-13 Stud welding equipment welding condition switching device

Country Status (1)

Country Link
JP (1) JP3002853B2 (en)

Families Citing this family (2)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
CN108422067B (en) * 2018-05-29 2021-11-02 上海众力汽车部件有限公司 Bolt welding and detecting system
CN113680853A (en) * 2021-07-18 2021-11-23 朱上河 High-efficient coalignment of civil air defense door frame angle steel

Also Published As

Publication number Publication date
JPH07303967A (en) 1995-11-21

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