JPS5935882A - Position controlling method of wire in back and forth welding - Google Patents

Position controlling method of wire in back and forth welding

Info

Publication number
JPS5935882A
JPS5935882A JP14443882A JP14443882A JPS5935882A JP S5935882 A JPS5935882 A JP S5935882A JP 14443882 A JP14443882 A JP 14443882A JP 14443882 A JP14443882 A JP 14443882A JP S5935882 A JPS5935882 A JP S5935882A
Authority
JP
Japan
Prior art keywords
wire
welding
voltage
base material
distance
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.)
Pending
Application number
JP14443882A
Other languages
Japanese (ja)
Inventor
Yoshiyuki Saito
斉藤 吉幸
Akira Yamaoka
山岡 昭
Katsura Owaki
桂 大脇
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.)
IHI Corp
Original Assignee
IHI 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 IHI Corp filed Critical IHI Corp
Priority to JP14443882A priority Critical patent/JPS5935882A/en
Publication of JPS5935882A publication Critical patent/JPS5935882A/en
Pending legal-status Critical Current

Links

Classifications

    • BPERFORMING OPERATIONS; TRANSPORTING
    • B23MACHINE TOOLS; METAL-WORKING NOT OTHERWISE PROVIDED FOR
    • B23KSOLDERING OR UNSOLDERING; WELDING; CLADDING OR PLATING BY SOLDERING OR WELDING; CUTTING BY APPLYING HEAT LOCALLY, e.g. FLAME CUTTING; WORKING BY LASER BEAM
    • B23K9/00Arc welding or cutting
    • B23K9/12Automatic feeding or moving of electrodes or work for spot or seam welding or cutting
    • B23K9/133Means for feeding electrodes, e.g. drums, rolls, motors

Landscapes

  • Engineering & Computer Science (AREA)
  • Physics & Mathematics (AREA)
  • Plasma & Fusion (AREA)
  • Mechanical Engineering (AREA)
  • Butt Welding And Welding Of Specific Article (AREA)

Abstract

PURPOSE:To perform titled positional control in a uniform molten state, by controlling the height of a wire in such a way that the detected potential coincides with the reference voltage set between the wire on the unused side and a base material and enabling the welding immediately when a welding torch is inverted. CONSTITUTION:The noise of the potential difference (voltage) VW between a detected 33 wire 26 and a base material 22 is removed with a filter circuit 34 and is amplified 35 to a voltage VW'. On the other hand, a reference voltage VS is set 36, and the deviation VA between VW' and VS is outputted with a comparing amplifier 37. The deviation voltage VA is amplified 38 to VM which is applied to a motor 32 and an arm 30 is moved upward and downward until VM=0 is attained, that is, the distance Y between the forward end of the wire 26 and the material 22 coincides with the distance DELTAY corresponding to the voltage VS. Even if beads 40 are rugged, the forward end of the wire 26 is moved upward or downward along the same and always the minute distance DELTAY is maintained. A welding torch 21 is thus lowered immediately when it is inverted and welding is accomplished whereby the uniform welding condition is obtd.

Description

【発明の詳細な説明】 この発明は溶接トーチの移動方向前後に2つのワイヤノ
ズルを昇11j¥!可能にそれぞれ配置し、使用するワ
イヤを溶接トーチの移動方向に応じて切換えることによ
り、tg#、蛛に活って往復の浴接な行なう場&におい
て、使用しない側のワイヤを適当な1%さ位Iffで引
き上げておくための方法に関す4)。
[Detailed description of the invention] This invention raises two wire nozzles forward and backward in the moving direction of the welding torch! By arranging the wires according to the direction of movement of the welding torch, the wires on the unused side can be set at an appropriate 1% 4) Concerning the method for raising the position Iff.

固定管の円周突合せ溶接や管と管板との溶接を自動TI
Gf#接で竹なり場合、一般に、管の外周にレールを取
付け、これに滑って浴接トーチを自動的に回転させるよ
うにしてる。この場合、マルチノ9スmfJ:!で汀、
溶接トーチを一方向のみに回転させるとm廣=諒のコー
ドなどが管に巻き付いてし′まりので、1回転ずつ回転
方向を反転させて往復でm階を−rること(以−「往復
溶接という)が行なわれている。この往偵酌接で65、
ワイヤを溶接トーチの進行方向前後にそれぞれ配置し、
浴接トーチの進行方向に応じて一方の(使用する側の)
ワイヤをm−プールに引き降ろし、他方の(使用しない
側の)ワイヤを引き上げるようにワイヤの位ft 1f
fll #が行なわれる。第1図はその様子を概略的に
示しTこもので、溶接トーチ1の回転方向前後にワイヤ
6.71に′通したワイヤノズル2.3をそれぞれスク
リュー4.B4−介して配置し、スクリュ−4,5な回
転駆動することにより、ワイヤノズル2,3を昇降させ
るようにし1こもので必4)。第1図1b+のように浴
接トーチ1を管8の周りに矢印A方向に回転式せるとき
は、ワイヤノズル3を[降させてワイヤ7の先端を溶融
ゾール9aに挿入するとともに、ワイヤノズル2を上昇
させてワイヤ6がビード9bに当1こらないようにして
いる。
Automatic TI for circumferential butt welding of fixed pipes and welding between pipes and tube sheets
In the case of Gf# connection, generally a rail is attached to the outer periphery of the pipe, and the bath welding torch is automatically rotated by sliding on this rail. In this case, Martino 9s mfJ:! At the end,
If the welding torch is rotated in only one direction, the m-hiro = ryo cord will get wrapped around the pipe, so reverse the direction of rotation one rotation at a time and move m floors in a round trip (hereinafter referred to as ``reciprocating''). (referred to as welding) is being carried out. 65,
Place the wires at the front and rear of the welding torch,
Depending on the direction of travel of the bath torch, one (the side to be used)
Lower the wire into the m-pool and pull up the other (unused) wire to a height of ft 1f.
fll # is performed. FIG. 1 schematically shows this situation, in which a wire nozzle 2.3 passed through a wire 6.71 in the front and rear directions of the rotational direction of the welding torch 1 is connected to a screw 4. The wire nozzles 2 and 3 are raised and lowered by placing them through B4 and driving the screws 4 and 5 to rotate. When the bath torch 1 is rotated around the tube 8 in the direction of arrow A as shown in FIG. 2 is raised to prevent the wire 6 from hitting the bead 9b.

まTこ、第1図1b+のように浴接トーチ1を管8の周
りに矢印X方向に回転をせるときは、ワイヤノズル2を
714させてワイヤ6の先端な浴融ノール9a’に挿入
1−るとともに、ワイヤノズル3を上昇させてワイヤ7
がビード9bK当たらないようKしている。
When rotating the bath welding torch 1 around the tube 8 in the direction of the arrow X as shown in FIG. At the same time, raise the wire nozzle 3 and remove the wire 7.
K so that it does not hit bead 9bK.

上記のようは溶接において、使用しない側のワイヤノズ
ルを上昇させる場合、従来においては、タイマにより一
定時間スクリューを回転させて上昇させるか、あるいは
ボテ/ンヨメータにより一定の高さに上昇させるように
していた。し刀・し、このような方法では上昇されたワ
イヤが凹凸のあるビードに当たらないようにするため、
ある程度余裕を待った1髄さ゛まで上ケ1さぜなければ
ならない。
As mentioned above, when raising the wire nozzle on the side that is not used in welding, conventionally, a timer is used to rotate the screw for a certain period of time to raise it, or a button/yometer is used to raise it to a certain height. Ta. However, in order to prevent the raised wire from hitting the uneven bead with this method,
You have to wait until you have a certain amount of time and do the best.

このため、A!HJel・−チの回転方向反転時にワイ
ヤノズルを行なえる^さ位晴廿で1降させるのに時間が
かかり、溶接1・−チの回転方向反転時1置での浴接が
不充分となってしまう。また、これを改善するムニめワ
イヤが溶接を行なえる尚さ位置に下降丁イ)“まで溶接
トーチな停止1:劣せるようにすると、そ(7) (+
7 litでの人熱臘が多くなり、全周にわ1こって均
一なm融状j趨を慢ることができない。
For this reason, A! When reversing the rotational direction of the HJel-chi, it takes time to lower the wire nozzle to the correct position, and when the rotational direction of the welding 1-chi is reversed, the bath contact at the first position is insufficient. I end up. In addition, to improve this, the welding torch can be lowered to a position where the welding wire can be welded.
At 7 liters, there is a lot of human heat, and it is impossible to maintain a uniform melting pattern all around the circumference.

この発明に+1−述の点に丸み−Cなされたもので、イ
ψ用1.ない1則のワイヤをビードかられずかに離れた
高さ”+1ill @l韮く)ことにJニリ、反転時に
すぐにm接ケ行なえる状態にして均一な浴接状態が得ら
れるようにした往<mm漱におけるワイヤの位置制御方
法を提供しようと1−るものである。
In this invention, the points mentioned above are rounded by -C, and 1. In particular, the height of the wire, which does not have a single rule, is slightly away from the bead. The present invention is intended to provide a method for controlling the position of a wire when the distance is < mm.

この発明によれは、ワイヤを溶融ゾールから浮かした状
態においでe丁、ワイヤに母材との距離に応じた電位が
生じることを利用して、ある基準の電位を設定し、検出
さtする電位がこの基準の電位に一致するようにワイヤ
の高さを制御することにより、上記の目的を達成してい
る。
According to this invention, a certain reference potential is set and detected by utilizing the fact that when the wire is suspended from the molten sol, a potential is generated in the wire according to the distance from the base material. The above objective is achieved by controlling the height of the wire so that the potential matches this reference potential.

ここで、この発明の原理を第2図および第3図を参照し
て詳しく説明する。
The principle of the invention will now be explained in detail with reference to FIGS. 2 and 3.

第2図に示すように、電極10と母材13とのIllに
浴接電源14ケ接続してアークを発生させた状、@にお
いては、ワイヤ12と母材13との間に電位差VWが生
じている。この電位差vHワイヤ12の先端と母材13
との間の距離Yに応じて変化する特性を示T0−例とし
て、 m接電流I:100A アーク長t : 1.5m+11 電極先端とワイヤ12の先端との水平方向の距離X  
:  5 am ワイヤ12と母材13との角度θニジ)度にそれぞれ設
定して、ワイヤ12の先端と母材13との距離Yを変化
させた場合の電位差VWの変化を第3図に示す。第3図
によれば、Y= Q mmのとき(母材13にワイヤ1
2の先端が接触している状態)、電位差V はほぼOで
あり、ワイヤ12の先端を母材13から引き離すと、電
位差VWは急激に上昇してY−Q 、 3 、Ba付近
で最大11Kを示し、距離Yがそれ以上V−fLると、
電位差V は徐々に低下してくる。
As shown in FIG. 2, when 14 bath-grounded power supplies are connected to Ill between the electrode 10 and the base metal 13 to generate an arc, there is a potential difference VW between the wire 12 and the base metal 13. It is occurring. This potential difference between the tip of the vH wire 12 and the base material 13
As an example, m-contact current I: 100A arc length t: 1.5m+11 Horizontal distance X between the tip of the electrode and the tip of the wire 12
: 5 am Figure 3 shows the changes in the potential difference VW when the distance Y between the tip of the wire 12 and the base material 13 is changed by setting the angle θ between the wire 12 and the base material 13 to 5) degrees. . According to FIG. 3, when Y=Q mm (wire 1 is attached to base material 13)
2), the potential difference V is approximately O, and when the tip of the wire 12 is pulled away from the base material 13, the potential difference VW increases rapidly and reaches a maximum of 11 K near Y-Q, 3, Ba. , and if the distance Y is more than V−fL, then
The potential difference V gradually decreases.

そこで、電位差V が0から最大値に達する捷での正特
性領域を利用して、基準の電圧V、を適当な値(例えば
第3図の場合1v#i度)に設定して、検出される電位
差V がこの設定値V に一致丁W         
           aるようにワイヤノズル1】を
昇降させれば、ビードに凹凸があったとしても、ワイヤ
11の先端を常にビードかられずかに離れ1こ高さAY
 VC制御することができ、溶接トーチ1()の進行方
向を反転させた場合に、即座に溶融ゾールに挿入させる
ことができる。
Therefore, by using the positive characteristic region where the potential difference V reaches its maximum value from 0, the reference voltage V is set to an appropriate value (for example, 1v#i degrees in the case of Fig. 3), and the detected value is The potential difference V matches this set value V
By raising and lowering the wire nozzle 1 as shown in FIG.
It can be controlled by VC, and when the traveling direction of the welding torch 1 ( ) is reversed, it can be inserted into the molten sol immediately.

第4図は以上の原理を利用したこの発明の一実施例を示
すものである。ここでは、溶接トーチ20の進行方向前
後に配置されるワイヤ供給装置24゜5のうちワイヤI
4給装置125を使って、溶接トーチ4)を矢印A方向
に回転させる場合について、すなわちワイヤ供給装置1
i24は上昇させて1更用しない状態に1III111
4Iする#h合について示している。ここではワイヤ供
給装置内についてのみ制御系統を示してあるが、ワイヤ
送給装置25V一ついても同様な開側1系統が設けられ
7−)。
FIG. 4 shows an embodiment of the present invention utilizing the above principle. Here, of the wire supply devices 24.5 disposed before and after the welding torch 20 in the traveling direction, the wire I
Regarding the case where the welding torch 4) is rotated in the direction of arrow A using the wire feeding device 125, that is, the wire feeding device 1
i24 is raised and not used 1III111
4I is shown for #h match. Here, only the control system within the wire feeding device is shown, but even if there is only one wire feeding device 25V, a similar open side system is provided 7-).

第4図において、浴接トーチ2i1の先端の電堆21と
母材(固定管)22との間に汀浴接用直流醒源2.3が
接続されている。浴接トーチ21)の進行方向前後には
ワイヤ送給装置124.25がそれぞれ取付けらねてい
る。ワイヤ送給装置24に、ワイヤあをワイヤリール2
7からワイヤ送給モータ21[:よって繰り出し、ワイ
ヤノズル29を経て電極2]の+[Tに送給する。これ
らの部分は全体がアーム:30に取付けられており、浴
接トーチ側に配設さねたスクリュー3]をモータ32で
駆#Jすることにより昇降される。
In FIG. 4, a direct current aeration source 2.3 for bath contact is connected between the electrode stack 21 at the tip of the bath torch 2i1 and the base material (fixed tube) 22. Wire feeding devices 124, 25 are installed at the front and rear of the bath torch 21) in the direction of movement. The wire reel 2 is connected to the wire feeding device 24.
7 to the wire feed motor 21 [:Therefore, the wire is fed out through the wire nozzle 29 to +[T of the electrode 2]. These parts are all attached to an arm 30, and are raised and lowered by driving a screw 3 disposed on the bathing torch side with a motor 32.

右側のワイヤ送給装置かもこれと同様に構成されている
The wire feeding device on the right side is constructed in a similar manner.

電圧検出部、33はワイヤあと母材ρとの間の電位差V
Wを検出jる。この検出された電圧Vwはフィルタ回路
34でノイズが除去さFLl ワイヤ電圧増幅部あでV
tに増幅される。基準電圧設定器36では前記第3図の
基準電圧vsが設定され、比較増幅器37ではV w 
tと■8の偏差VAを出力する。この偏差電圧vA汀モ
ータ駆動増福部あでVMに増幅されてモータ32に加わ
り、VM ””0になる筐で、¥なわちワイヤ部の先端
と母材22との距離Yが基準電圧V、に対応する距離Δ
YK一致するまでアーム30を昇降させる。これにより
、ビード4OK凹凸があったとしても、ワイヤあの先端
ぼこれに沿って上下動し、常に微少距離ΔYに保つこと
ができる。
A voltage detection unit 33 is a voltage difference V between the wire and the base material ρ.
Detect W. Noise is removed from this detected voltage Vw by a filter circuit 34.
It is amplified to t. The reference voltage setter 36 sets the reference voltage vs shown in FIG. 3, and the comparison amplifier 37 sets the reference voltage V w
Outputs the deviation VA between t and ■8. This deviation voltage vA is amplified by the motor drive amplification part VM and applied to the motor 32, and VM becomes 0. In other words, the distance Y between the tip of the wire part and the base material 22 is the reference voltage V. , the distance Δ corresponding to
The arm 30 is raised and lowered until YK matches. As a result, even if the bead 4OK has irregularities, it can move up and down along the tip of the wire and can always maintain a minute distance ΔY.

浴接トーチ加が反転した場合にはワイヤ送給装置25に
ついて上記の制御が行なわれる。
When the application of the bath torch is reversed, the above-described control is performed on the wire feeding device 25.

第5図は以上の制御系統による制御状態の一例を示した
ものである。第5図1b+に示すよりに、母材ρとワイ
ヤが間の電位差VWは通常は基準電圧vsに制御されて
いるが、ビードの凹凸などにより、母材乙とワイヤ26
間の距離が近づいたときあるいに接触したときは電位差
VWは低下するので、その時点で第5図1b+に示すよ
うにモータ32の駆動成田VMが出力されて、ワイヤあ
の高き位置がイし正される。
FIG. 5 shows an example of a control state by the above control system. As shown in FIG. 5 1b+, the potential difference VW between the base material ρ and the wire is normally controlled to the reference voltage VS, but due to the unevenness of the bead, etc.
When the distance between the wires approaches or they come into contact, the potential difference VW decreases, so at that point the drive Narita VM of the motor 32 is output as shown in FIG. be corrected.

上記実施例ではこの発明を固定管の浴接に適用しTコ場
合について示したが、平板その他の浴接にも適用するこ
とができる。
In the above embodiment, the present invention is applied to the bath welding of a fixed pipe and is shown in the case of a T-coat, but it can also be applied to bath welding of flat plates and other types.

以上説明したようにこの発明によれば、往復浴接におい
て、使用しない側のワイヤを母材かられずかに離した位
置に制御することができるので、浴接トーチを反転させ
たとき、即座に引き降ろして@接を行なうことができ、
均一なm接状態を得ることができる。
As explained above, according to the present invention, in reciprocating bath welding, the unused wire can be controlled to a position slightly away from the base material, so when the bath welding torch is reversed, it can be immediately You can pull it down and perform @ contact,
A uniform m-contact state can be obtained.

【図面の簡単な説明】[Brief explanation of the drawing]

第1図は固定管の往復浴接を行なう状態を示す図、第2
図、第3図にこの発明の詳細な説明するための図で、第
2図はワイヤ12の位置関係を示す凶、第3図は第2図
におけろ母材13とワイヤ12間の距離Yとそれらの間
の電位差VWの関係を示すグラフ、第4凶はこの発明の
一実施例を示す機構図および制御系統のブロック図、第
5図は第4図の制御系統の動作説明凶である。 加・・・浴接トーチ、2】・・・電極、22・・・°母
材(固足管ン、ム・・・浴接用直流電源、ム、25・・
・ワイヤ送給装置、(9) 加・・・ワイヤ、n・・・ワイヤリール、U・・・ワイ
ヤ送給モータ、21ト・・ワイヤノズル、■〕・・・ア
ーム、31・・・スクリュー、:う2・・・モータ、4
0・・・ビード。 (10)
Figure 1 is a diagram showing the state of reciprocating bath contact of a fixed pipe, Figure 2
3 are diagrams for explaining the present invention in detail. FIG. 2 shows the positional relationship of the wire 12, and FIG. 3 shows the distance between the base material 13 and the wire 12 in FIG. A graph showing the relationship between Y and the potential difference VW between them, the fourth figure is a mechanism diagram showing an embodiment of the present invention and a block diagram of the control system, and FIG. 5 is an explanation of the operation of the control system in FIG. be. Add...Bath contact torch, 2]...Electrode, 22...°Base material (solid foot tube, Mu...Bath contact DC power supply, Mu, 25...
・Wire feeding device, (9) Add... wire, n... wire reel, U... wire feeding motor, 21... wire nozzle, ■]... arm, 31... screw , :U2...Motor, 4
0...bead. (10)

Claims (1)

【特許請求の範囲】[Claims] 浴接トーチの移動方向前後に2つのワイヤノズルを昇降
可能にそれぞれ配置し、溶接トーチの移動方向に応じて
使用するワイヤを切換えることにより、m接線に浴って
往復の溶接を行なう場合において、1史用しない側のワ
イヤの電位を検出し、それが予め設定した値になるよう
にそのワイヤノズルを昇14=制御するようにした往復
溶接におけるワイヤの位置制御方法。
When performing reciprocating welding along the m-tangent line, by arranging two wire nozzles so that they can move up and down in the direction of movement of the welding torch, and switching the wire to be used depending on the direction of movement of the welding torch, A wire position control method in reciprocating welding in which the potential of the wire on the side that is not used is detected and the wire nozzle is controlled so that the potential becomes a preset value.
JP14443882A 1982-08-20 1982-08-20 Position controlling method of wire in back and forth welding Pending JPS5935882A (en)

Priority Applications (1)

Application Number Priority Date Filing Date Title
JP14443882A JPS5935882A (en) 1982-08-20 1982-08-20 Position controlling method of wire in back and forth welding

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
JP14443882A JPS5935882A (en) 1982-08-20 1982-08-20 Position controlling method of wire in back and forth welding

Publications (1)

Publication Number Publication Date
JPS5935882A true JPS5935882A (en) 1984-02-27

Family

ID=15362206

Family Applications (1)

Application Number Title Priority Date Filing Date
JP14443882A Pending JPS5935882A (en) 1982-08-20 1982-08-20 Position controlling method of wire in back and forth welding

Country Status (1)

Country Link
JP (1) JPS5935882A (en)

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