JPH05329639A - Multilayer automatic welding equipment and its welding method for all position reinforcing bars - Google Patents

Abstract

PURPOSE:To provide the multilayer automatic welding equipment and its welding method of the all position reinforcing bars as the automatic reinforcing bar joint producing method in reinforcing bar work. CONSTITUTION:The reinforcing bar end face is formed into a conical groove 19 and fixed by a reinforcing bar fixing jig 20, divided discoid materials 1 and 2 are combined by fastners 3 and 4, the multilayer automatic welding equipment is set up on a vice A15, the position of a welding torch 7 is adjusted by a position correcting device 11 and the inner peripheral surfaces of divided cylindrical materials 5 and 6 are rotated with these along the outer peripheral parts of the reinforcing bars by rotating the multilayer automatic welding equipment. The welding torch 7 is then rotated with a reinforcing bar axis as a center by rotating around the reinforcing bar axial center via a first surface gear 12 to rotate in synchronization by a second surface gear 13 with the output of a driving motor 14, the welding wire tip follows the inside of a reinforcing bar groove and cladding by welding is performed on the groove inside from the axial center of the reinforcing bars by regular and reverse rotation by using the gas shielded arc welding method, etc.

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、土木および建築等にお
ける鉄筋工事のうち鉄筋継手における鉄筋同士の突き合
わせ継手部において、容易かつ安定した品質にて確実に
溶接接合せしめる鉄筋の多層自動溶接装置およびその溶
接法に関するものであるBACKGROUND OF THE INVENTION 1. Field of the Invention The present invention relates to a multi-layer automatic welding apparatus for reinforcing bars, which can be easily and reliably weld-joined at a butt joint between reinforcing bars in a reinforcing bar joint in civil engineering and construction, etc. Related to the welding method

【０００２】[0002]

【従来の技術】既知のように鉄筋を接合する手段には、
ガス圧接、溶接継手および機械継手等による工法があ
る。これらの継手工法の多くは、手作業で実施されるこ
とが多く、個々の技能に対する熟練度に作用され継手性
能にバラツキが生じ、また、高度な技能が要求されるの
で溶接作業者の確保も難しく、基準に適する鉄筋継手性
能を確保するためには長期の職業訓練や経験が必要とな
る。なお、近年、構造物の大型化に伴い強度的保証、配
筋の簡略化、作業量の軽減といった要求に対して太径鉄
筋の採用が増加しており、鉄筋が太径化されることで鉄
筋継手部に要求される継手性能も一段と高品質になり完
全に保証された継手工法は確立されておらず、要求され
る継手性能を得ることのできる技術が必要とされてい
る。また、現在、最も多用されているガス圧接工法で
は、圧接時に鉄筋継手部に縮み代を必要としているため
圧接後は鉄筋長さが短くなることより、鉄筋先組み工法
への適用が難かしい。また、鉄筋継手の開先形状はＩ形
ならびにレ形が多用されているが、Ｉ形開先では太径鉄
筋は重量があるのでルート間隔の設定等に鉄筋の移動装
置ならびに調整時間を必要とし、接合においては、特に
太径になるほど、ルート間隔が非常に狭いので溶接ワイ
ヤが中心部に十分届かないため、鉄筋軸の中心部に融合
不良が発生し、良好な継手性能を得ることが困難とな
る。また、レ形開先における自動化は溶接長が短くな
り、良好な肉盛りを得ることが非常に難かしい。また、
電気溶接においては、溶接開始点での融合不良による溶
接欠陥が継手性能に悪影響を与えていることが問題とな
っている。また、溶接後の仕上がり形状が過大な場合、
施工性に不利とされている。2. Description of the Related Art As is known, means for joining reinforcing bars include
There are construction methods such as gas pressure welding, welded joints and mechanical joints. Many of these joint construction methods are often carried out manually, which affects the joint performance due to the degree of proficiency for each individual skill, and also requires a high degree of skill, so securing welding workers is also necessary. It is difficult and requires long-term vocational training and experience to ensure the performance of rebar joints that meet the standards. In addition, in recent years, with the increase in size of structures, the adoption of large-diameter reinforcing bars is increasing in response to demands such as strength assurance, simplification of bar arrangement, and reduction of work load. The joint performance required for the reinforcing bar joints is of even higher quality and a completely guaranteed joint construction method has not been established, and a technique capable of obtaining the required joint performance is required. Further, in the gas pressure welding method which is most frequently used at present, since the rebar joint portion needs a shrinkage margin during pressure welding, the length of the rebar becomes short after the pressure welding, which makes it difficult to apply it to the rebar pre-assembly method. In addition, the groove shape of the reinforcing bar joint is often used as I-shaped and L-shaped, but in the I-shaped groove, the large-diameter reinforcing bar is heavy, so a moving device of the reinforcing bar and adjustment time are required for setting the route interval. In joining, the welding wire does not reach the center part sufficiently because the root interval is very narrow as the diameter becomes thicker, so fusion failure occurs in the center part of the reinforcing bar shaft and it is difficult to obtain good joint performance. Becomes In addition, the automation of the double groove reduces the welding length, and it is very difficult to obtain a good overlay. Also,
In electric welding, there is a problem that welding defects due to poor fusion at the welding start point adversely affect the joint performance. Also, if the finished shape after welding is too large,
It is considered to be disadvantageous in terms of workability.

【０００３】[0003]

【発明が解決しようとする課題】本発明は、上述した課
題に鑑みなされたもので、本発明の目的は、手溶接作業
で実施されている鉄筋継手を自動化することで、短期間
の職業訓練で要求される鉄筋継手性能の維持、向上が誰
にでも安定して得られ、また、鉄筋自動溶接装置の保守
点検が容易にでき、操作性、作業性、経済性が満足で
き、鉄筋先組工法においても使用でき、また、鉄筋の太
径化においても鉄筋の中心部まで容易に完全溶け込み溶
接部が得られ、溶接開始点に発生する溶接欠陥が防止で
き、要求される鉄筋継手性能を得ることができ、継手部
の断面積が小さく仕上がり施工性に有利にできるといっ
た、以上の課題を解決するための、鉄筋の多層自動溶接
装置およびその溶接法を提供することである。SUMMARY OF THE INVENTION The present invention has been made in view of the above-mentioned problems, and an object of the present invention is to automate a rebar joint which is carried out by a manual welding work, thereby providing a short-term vocational training. Anyone can stably maintain and improve the reinforcing bar joint performance required in, and the maintenance and inspection of the automatic reinforcing bar welding equipment can be easily performed, and the operability, workability, and economical efficiency can be satisfied. It can also be used in the construction method, and even when the diameter of the reinforcing bar is increased, a complete penetration weld can be easily obtained up to the center of the reinforcing bar, welding defects occurring at the welding start point can be prevented, and the required reinforcing bar joint performance can be obtained. The present invention is to provide a multi-layer automatic welding apparatus for reinforcing bars and a welding method thereof for solving the above-mentioned problems, such as the fact that the cross-sectional area of the joint portion is small and the finished workability is advantageous.

【０００４】[0004]

【課題を解決するための手段】本発明は、上述した目的
を達成するための、鉄筋の多層自動溶接装置およびその
溶接法について提案されたもので、図１、図２、図３を
用いて説明すると、鉄筋継手部に脱着自在な鉄筋固定治
具２０で確実に固定することで突合せた鉄筋同士を組み
立て、鉄筋継手の実施前と実施後において鉄筋長に変化
の生じないようにし、次に、脱着自在なバイスＡ１５を
取り付け、バイスＡ１５に多層自動溶接装置を止め具
３、４等で合体して設置し、円盤状材料に設けた位置補
正装置１１で溶接トーチ７、溶接ノズル８を上下移動、
前後移動させ位置調整を行い、溶接ワイヤ先端を鉄筋の
軸心に合わせ、多層自動溶接装置の回動は、中心に設け
た分割円筒状材料５、６を継手対象となる鉄筋に軽く接
触させ、鉄筋の外周面にそって分割円筒材料５、６の内
周面が回動することと、円盤状材料の外周部に設けた歯
の第１面歯車１２と、駆動モータに取り付けられたピニ
オンの第２面歯車１３が、駆動モータ１４の出力ととも
に、第２面歯車１３によって同期回動する第１面歯車１
２を介して鉄筋軸心まわりに回動することで、溶接トー
チ７は鉄筋軸を中心に回動し、同時にアークを発生し、
溶接が実施される。なお、鉄筋が太径化しても溶接ノズ
ルを中心まで挿入でき、十分溶接ワイヤが中心まで届
き、鉄筋の中心部に十分な溶け込みが得られるように、
鉄筋先端を円錐状に開先加工して、溶接トーチ７を鉄筋
軸を中心として約１回転以上溶接し、一時溶接を止め、
溶接開始点の欠陥発生を防止するためにアーク開始点を
ずらした後、溶接ワイヤの位置補正を行い、開先内を、
正回転、逆回転と駆動モータ１４の駆動モータ出力スイ
ッチ２３で回転方向を切り替えながら回動させ、開先内
を軸心から外側へ向け多層肉盛り自動溶接して全姿勢の
鉄筋継手を対象に溶接を実施できるようにした。DISCLOSURE OF THE INVENTION The present invention has been proposed for a multi-layer automatic welding apparatus for reinforcing bars and a welding method therefor for achieving the above-mentioned object, and will be described with reference to FIGS. 1, 2 and 3. Explaining, assembling the abutted reinforcing bars by securely fixing to the reinforcing bar joint with the removable reinforcing bar fixing jig 20 so that the reinforcing bar length does not change before and after the reinforcing bar coupling is performed. Attaching a detachable vise A15, installing a multi-layer automatic welding device on the vise A15 by combining it with stoppers 3, 4, etc., and moving the welding torch 7, welding nozzle 8 up and down with the position correction device 11 provided on the disk-shaped material. Move,
The front and rear are moved to adjust the position, the tip of the welding wire is aligned with the axis of the rebar, and the multilayer automatic welding device is rotated by lightly contacting the split cylindrical materials 5 and 6 provided at the center with the rebar to be the joint, The inner peripheral surfaces of the divided cylindrical materials 5 and 6 rotate along the outer peripheral surface of the reinforcing bar, the first surface gear 12 of the teeth provided on the outer peripheral portion of the disk-shaped material, and the pinion attached to the drive motor. The first surface gear 1 in which the second surface gear 13 rotates synchronously with the output of the drive motor 14 by the second surface gear 13.
By rotating about the axis of the reinforcing bar via 2, the welding torch 7 rotates about the axis of the reinforcing bar and at the same time generates an arc,
Welding is performed. Even if the diameter of the reinforcing bar is increased, the welding nozzle can be inserted to the center, the welding wire can reach the center sufficiently, and sufficient penetration can be obtained in the center of the reinforcing bar.
The tip of the reinforcing bar is beveled into a conical shape, the welding torch 7 is welded about 1 rotation or more around the axis of the reinforcing bar, and temporary welding is stopped.
After shifting the arc start point to prevent the occurrence of defects at the welding start point, the position of the welding wire is corrected and the inside of the groove is
For forward rotation, reverse rotation, and rotation while switching the rotation direction with the drive motor output switch 23 of the drive motor 14, multilayer welding automatic welding is performed with the inside of the groove from the axis center to the outside to target the rebar joint in all positions. Welding was made possible.

【０００５】[0005]

【作用】本発明による鉄筋の多層自動溶接装置およびそ
の溶接法は、上述したように、鉄筋の開先形状を円錐状
にしたことでますます太径化する鉄筋でも鉄筋軸の中心
部まで溶接ノズル、溶接ワイヤが届くことになり、中心
部に完全な溶融状態を得ることができ、溶接は円を描き
鉄筋軸の中心より外側に向け均一な肉盛りが持続され、
完全溶け込み一体継手となり、継手性能の高い鉄筋継手
が得られる。また、溶接後は母材とほぼ同一断面に仕上
げることができ、ほぼ同一断面で要求される継手強度が
得られることより、鉄筋継手部の断面積の増大がないの
で施工時に有利となる。 また、鉄筋軸に対して溶接ト
ーチの回転が１回転以上の回転が得られることより、溶
接開始位置を毎回ずらすことができるので、仕上げまで
溶接開始点が１箇所に集中しないことで、溶接開始点で
の溶接欠陥が防止され、１回転して溶接開始点にきても
アークを切ることなく連続溶接され重ね溶接ができるの
で、溶接開始点で問題となる融合不良等の溶接欠陥が防
止され完全溶け込みの良質な継手性能が得られる。ま
た、構造が簡単で、小型、軽量となり操作が簡単にで
き、保守点検も容易である。[Function] As described above, the multi-layer automatic welding apparatus for reinforcing bars according to the present invention and the welding method therefor weld even the reinforcing bars having a larger diameter by making the groove shape of the reinforcing bars conical up to the center of the reinforcing bars. The nozzle and welding wire will reach the center, and a complete molten state can be obtained.Welding draws a circle and the uniform buildup is continued from the center of the reinforcing bar to the outside,
It becomes a completely melted integrated joint, and a reinforcing bar joint with high joint performance can be obtained. Further, after welding, the base metal can be finished to have substantially the same cross section, and the required joint strength can be obtained with almost the same cross section, so that the cross-sectional area of the rebar joint does not increase, which is advantageous during construction. In addition, since the rotation of the welding torch is more than one rotation with respect to the rebar axis, the welding start position can be shifted every time, so the welding start point does not concentrate on one place until the finish Welding defects at the welding points are prevented, and even if the welding starts once and reaches the welding starting point, continuous welding and lap welding can be performed without cutting the arc, so welding defects such as poor fusion at the welding starting point can be prevented. High quality joint performance with complete melting can be obtained. Moreover, the structure is simple, the size and weight are small, the operation is easy, and the maintenance and inspection are easy.

【０００６】[0006]

【実施例】以下、この発明に係わる全姿勢鉄筋の多層自
動溶接装置およびその溶接法の一実施例を、添付図面に
基づいて詳細に説明する。図１は本発明の、鉄筋の全姿
勢多層自動溶接装置およびその溶接法を用いて鉛直鉄筋
継手部の溶接を行う場合の実施例で、円錐状開先１９に
製造された上鉄筋１７と下鉄筋１８が突合せ継手により
溶接する場合を例示しており、まず、脱着自在なバイス
Ａ１５を下鉄筋１８に固定し、多層自動溶接装置を、ボ
ルトや万力類の止め具３、４等で一体とし、鉄筋を抱持
し、バイスＡ１５の上端部が多層自動溶接装置の受け台
となり、バイスＡ１５の上で、鉄筋軸に対して回動す
る。また、位置補正装置１１は前後調整、上下調整を備
え、溶接トーチの位置調整を実施できる。図６は水平鉄
筋等を実施する場合の、鉛直鉄筋継手と異なる点を例示
しており、Ｉ形開先側にバイスＡ１５、バイスＢ１６を
用いて多層自動溶接装置を設置したので、安定な回動が
得られ、溶接が可能となる。また、駆動モータ１４は可
変速、正逆回転、ストッパー機能等を備え、正逆回転の
切り替え等は駆動モータ出力スイッチ２３にて手元で、
入力、出力ができるようにし、駆動モータはバイスＡ１
５の駆動モータ支持部で、移動し位置調整を行うことが
でき、鉄筋の設定環境によっては、駆動モータを外した
状態でも、回動を伝達できる。図３は、駆動モータ１４
による回転伝達機構を示しており、駆動モータの第２面
歯車１３が多層自動溶接装置の第１面歯車１２に噛み合
い、鉄筋軸に対して回動し、正逆回転において１回転以
上の回動が可能である。次に溶接方法は、鉄筋軸に対し
て、正方向に１回転以上回動しながら溶接し、次に一時
溶接を止め、溶接トーチの位置補正を行った後、鉄筋軸
の逆方向に１回転以上回動しながら溶接を行い、数回繰
り返し溶接が実施される。また、多層自動溶接装置の周
辺機器は、図２で示すように溶接ノズルへ溶接ワイヤを
送り込むための溶接ワイヤ送給装置２５、同じくシール
ド用のガスボンベ２６、ガス流量計２７、溶接機電源２
８、さらにこれらを操作制御する駆動モータ出力スイッ
チ２３、溶接条件出力スイッチ２４で構成されている。
なお、適正溶接条件は溶接機電源２８に入力し記憶させ
ておき、溶接時に所属する鉄筋ごとの溶接条件を溶接条
件出力スイッチ２４で出力した。また、溶接作業者は、
駆動モータ出力スイッチ２３、溶接条件出力スイッチ２
４を手元に持ったままの状態で、溶接状態を監視しなが
ら実施することができる。DETAILED DESCRIPTION OF THE PREFERRED EMBODIMENTS An embodiment of a multi-position automatic welding apparatus for all-position rebars and a welding method according to the present invention will be described in detail below with reference to the accompanying drawings. FIG. 1 shows an embodiment of the present invention in which a vertical bar joint portion is welded by using an all-position multi-layer automatic welding apparatus for rebars and the welding method thereof. The case where the reinforcing bar 18 is welded by a butt joint is shown as an example. First, the detachable vise A15 is fixed to the lower reinforcing bar 18, and the multi-layer automatic welding device is integrated with bolts and vise stoppers 3, 4, etc. Then, the reinforcing bar is held, and the upper end of the vise A15 serves as a pedestal of the multi-layer automatic welding device, and rotates on the reinforcing bar axis on the vise A15. Further, the position correction device 11 is provided with front-rear adjustment and up-down adjustment so that the position of the welding torch can be adjusted. FIG. 6 exemplifies the points different from the vertical rebar joints in the case of carrying out horizontal rebars and the like, and since a multi-layer automatic welding device is installed using the vice A15 and the vice B16 on the I-shaped groove side, stable welding is possible. Motion is obtained and welding is possible. Further, the drive motor 14 has a variable speed, forward / reverse rotation, a stopper function, etc., and forward / reverse rotation switching, etc. can be performed by the drive motor output switch 23.
Input and output are possible, and the drive motor is Vise A1.
The drive motor supporting portion 5 can move and adjust the position, and depending on the setting environment of the reinforcing bar, the rotation can be transmitted even when the drive motor is removed. FIG. 3 shows the drive motor 14
The second transmission gear 13 of the drive motor meshes with the first transmission gear 12 of the multi-layer automatic welding apparatus and rotates with respect to the rebar axis, and rotates one or more rotations in forward and reverse rotations. Is possible. Next, the welding method is that the welding is performed while rotating in the positive direction for one rotation or more in the positive direction, then temporarily stopping the welding, correcting the position of the welding torch, and then making one rotation in the opposite direction of the reinforcing bar axis. The welding is performed while rotating as described above, and the welding is repeatedly performed several times. Further, as shown in FIG. 2, peripheral equipment of the multi-layer automatic welding device includes a welding wire feeding device 25 for feeding the welding wire to the welding nozzle, a gas cylinder 26 for shielding, a gas flow meter 27, and a welding machine power source 2 as well.
8, a drive motor output switch 23 and a welding condition output switch 24 for operating and controlling them.
The proper welding conditions were input to and stored in the welding machine power supply 28, and the welding conditions for each reinforcing bar belonging to the welding machine were output by the welding condition output switch 24. Also, the welding worker
Drive motor output switch 23, welding condition output switch 2
4 can be carried out while the welding condition is being monitored while holding 4 at hand.

【０００７】[0007]

【実施例】溶接トーチの設定で、微調整を実施するため
に、溶接トーチがフレキシブルに動く自在トーチ等の採
用によりトーチ先端が簡単に曲がり溶接ワイヤの、ねら
い位置の精度を高めることができる。また、多層自動溶
接装置には、機能を付加するに配置できる空間が十分あ
るので、スパッタ除去カバー、防風装置、位置補正装置
に左右調整等を付加することが可能である。[Embodiment] To make fine adjustments by setting the welding torch, the torch tip can be easily bent by adopting a torch or the like in which the welding torch moves flexibly, and the accuracy of the aiming position of the welding wire can be increased. Further, since the multi-layer automatic welding apparatus has a sufficient space in which it can be provided with additional functions, it is possible to add left-right adjustment and the like to the spatter removal cover, the windbreak device, and the position correction device.

【０００８】[0008]

【実施例】実施例で用いた適正条件例を例示する。適正
溶接条件は、炭酸ガス溶接機電源に入力記憶させてお
き、対象鉄筋の所属するデータより溶接順に呼び出し
た。鉛直鉄筋の場合を例示すると、０．９ｍｍ径の溶接
ワイヤを用いた場合、溶接電流は初層から仕上げ層にお
いて約１７０Ａから２００Ａ、アーク電圧は１７Ｖから
２１Ｖ、溶接速度は約２５０から５００ｍｍ／ｍｉｎ、
ワイヤ突き出し長は１０から２０ｍｍ、ガスシールド流
量は４０から５０リットル／分、トーチ角度は鉄筋軸に
対して９０から１２０度において実施し、溶接した鉄筋
継手を、断面検査により溶け込み状態を判定したが欠陥
はなく、また、数多く一方向引張試験を行ったが、母材
破断、熱影響部より破断し、いずれにおいても、ＪＩＳ
規格の最低引張強さ以上を示し、良好な継手性能を得る
ことができる。EXAMPLES Examples of appropriate conditions used in the examples will be illustrated. The proper welding conditions were input and stored in the carbon dioxide welding machine power source, and were called in the welding order from the data to which the target rebar belongs. To exemplify the case of a vertical rebar, when a welding wire having a diameter of 0.9 mm is used, the welding current is about 170 A to 200 A in the first layer to the finishing layer, the arc voltage is 17 V to 21 V, and the welding speed is about 250 to 500 mm / min. ,
The wire protrusion length was 10 to 20 mm, the gas shield flow rate was 40 to 50 liters / minute, and the torch angle was 90 to 120 degrees with respect to the reinforcing bar axis. There were no defects, and many unidirectional tensile tests were conducted, but the base material fractured and fractured from the heat-affected zone.
It shows more than the specified minimum tensile strength, and good joint performance can be obtained.

【０００９】[0009]

【実施例】対象となる鉄筋の大きさは、直径が約２０ｍ
ｍ以上の鉄筋が溶接でき、良好な継手部を得ることがで
きる。また、鉄筋の他に、丸鋼類の外形が円形状の材料
も溶接可能である。また、鉄筋の径の異なる鉄筋同士の
突き合わせ継手においても要求を満足する継手が得ら
れ、母材と同等以上の強度の良好な継手性能を得る事が
可能である。[Example] The target rebar size is about 20 m in diameter.
Reinforcing bars of m or more can be welded, and a good joint can be obtained. In addition to rebars, round steels having a circular outer shape can be welded. Further, a butt joint for reinforcing bars having different diameters can be obtained which satisfies the requirements, and it is possible to obtain good joint performance with strength equal to or higher than that of the base material.

【００１０】[0010]

【実施例】鉄筋の適用対象はあらゆる姿勢の鉄筋継手の
溶接が可能となり、溶接姿勢は、鉛直鉄筋継手の場合は
水平横向き溶接、その他の鉄筋等の場合は鉄筋軸に対し
て全姿勢溶接となる。また、継手開先形状は、鉄筋の径
や姿勢に応じて円錐台開先形状、多角錐開先形状等も可
能となり、いずれも良好な継手部を得ることができる。
したがって、他の工法で、難しいとされる鉄筋移動治具
で規定されたルート間隔等の調整を行う必要がない。[Example] Reinforcing bars can be welded to any position of the reinforcing bar joints. The welding position is horizontal horizontal welding for vertical reinforcing bar joints, and all position welding to the reinforcing bar axis for other reinforcing bars. Become. Further, the joint groove shape can be a truncated cone groove shape, a polygonal pyramid groove shape, or the like depending on the diameter and posture of the reinforcing bar, and any good joint portion can be obtained.
Therefore, it is not necessary to adjust the route interval or the like defined by the reinforcing bar moving jig, which is considered to be difficult, by another method.

【００１１】[0011]

【実施例】この実施例の多層自動溶接装置の円盤状材料
等を、アルミニウム等の材料を用いることで軽量化な
ど、改善できる。[Example] By using a material such as aluminum for the disc-shaped material of the multi-layer automatic welding apparatus of this embodiment, it is possible to improve the weight and the like.

【００１２】[0012]

【実施例】図１では、炭酸ガスアーク溶接法を用いて行
うように構成したが、同様な形態の溶接法であれば、Ｍ
ＡＧ溶接法等を採用しても溶接可能である。また、フラ
ックス入りワイヤなどノンガスアーク溶接法等を用いて
もスラグ除去を実施することで溶接可能である。[Embodiment] In FIG. 1, the carbon dioxide arc welding method is used. However, if the welding method has a similar configuration, M
Welding is possible even if the AG welding method is adopted. Further, it is possible to perform welding by removing the slag by using a non-gas arc welding method such as a flux-cored wire.

【００１３】[0013]

【実施例】最近鉄筋メーカーが、独自の凹凸パターンを
つけた異形鉄筋を製造しているが、凹凸が大きい場合等
には、回動がスムーズに実施されるように、多層自動溶
接装置を設置する前に、鉄筋と同径の内面を持つ分割円
筒状材料類を先に止め具等で対象鉄筋に抱持させ、すき
まおよびはめあいを調整し、自動溶接装置の分割円筒状
材料５、６もこれに合うようにし、内部を精度よく加工
し、さらに研磨することで、より一層正確な回転が得ら
れ、仕上げ精度が高り、溶接が可能である。また、分割
円筒状材料５は分割円筒状自体の円筒状の外筒と軸との
間をボールが転送する機能等を採用することで、溶接精
度を高めることが可能である。[Example] Recently, a rebar maker is manufacturing deformed rebar with a unique concavo-convex pattern. However, if the concavo-convex is large, a multi-layer automatic welding device is installed so that rotation can be performed smoothly. Before doing so, the divided cylindrical materials having an inner surface with the same diameter as the reinforcing bar are first held by the target reinforcing bar with a stopper or the like, the clearance and fit are adjusted, and the divided cylindrical materials 5 and 6 of the automatic welding device are also By matching this, processing the inside with high accuracy, and further polishing, more accurate rotation can be obtained, finishing accuracy is high, and welding is possible. Further, the divided cylindrical material 5 can improve welding accuracy by adopting a function of transferring balls between the cylindrical outer cylinder of the divided cylindrical itself and the shaft.

【００１４】[0014]

【実施例】図４は継手部マクロ断面で、溶接ビード２２
の積層法を示しており、均一に多層溶接される。また図
５は、溶接ノズル８から送り出されてくる溶接ワイヤ先
端部の溶融池の軌跡を示しており、開先内の軸心から外
周に向けて円形状に溶接ビードが多層肉盛りされ、溶接
金属が均一に確保され、良好に溶接できる。EXAMPLE FIG. 4 is a macro sectional view of a joint, showing a weld bead 22.
It shows the lamination method of No. 1, and is uniformly multi-layer welded. FIG. 5 shows the trajectory of the molten pool at the tip of the welding wire sent out from the welding nozzle 8. The welding beads are accumulated in multiple layers in a circular shape from the axial center in the groove to the outer periphery, The metal is secured uniformly, and good welding is possible.

【００１５】[0015]

【実施例】回動の伝達方法として、円盤状材料に、ウー
ムギヤ、カサ歯車やベルト、プーリ等の伝達機構を採用
しても、回動が得られ溶接可能である。[Embodiment] As a method of transmitting rotation, even if a transmission mechanism such as a worm gear, a bevel gear, a belt, and a pulley is used for the disc-shaped material, the rotation can be obtained and welding can be performed.

【００１６】[0016]

【発明の効果】この発明に係わる鉄筋の多層自動溶接装
置およびその溶接法は、従来の鉄筋継手工法では手溶接
作業が多く高度熟練技能ならびに高度な資格が要求さ
れ、鉄筋継手に関する基準の継手性能に合格することは
難しいものであったが、本発明では、自動化したこと
で、適正施工条件が常に一定にでき、誰でも短期間の簡
単な職業訓練で取り扱いができるようになり、作業に熟
練を必要としないので継手性能にバラツキもなく、良好
な継手性能が維持され、作業が著しく省力化されること
になる。すなわち継手品質が手溶接の場合に比べて、格
段に向上し、技量差がなくバラツキのない均一な溶接が
実施できる。また、図７に示すように、多層自動溶接装
置は分解、取り付けが容易にでき、簡単な構造であるか
ら操作性、保守管理が容易となり、小型としたことで軽
量化となり、現場間において作業者が一人で手軽に運
搬、設置できる。また、多層自動溶接装置の製作費は安
価な値段で製作できる。また、この溶接法においては、
全姿勢の鉄筋継手の接合が可能となる。また、溶接作業
者は多層自動溶接装置の設置と監視業務が主となるた
め、溶接特有の災害ならびに安全衛生が改善される。ま
た、多層自動溶接装置の回動量は鉄筋軸に対して１回転
以上の回動が得られ連続溶接となることよりアーク開始
点で問題となっている溶接欠陥の発生が防止できる。ま
た、鉄筋継手部の断面形状が、鉄筋素材とほぼ等しく仕
上げられることより施工において有利となる。また、応
力集中を防止できる。したがって、今後ますます大型化
する建設工事に伴い、優れた鉄筋継手を提供できる。INDUSTRIAL APPLICABILITY The multi-layer automatic welding apparatus for reinforcing bars and the welding method according to the present invention require a lot of manual welding work in the conventional reinforcing bar joint construction method and require highly skilled skills and advanced qualifications. Although it was difficult to pass the requirement, in the present invention, by automating, proper construction conditions can always be kept constant, and anyone can handle with simple vocational training in a short period of time. Since there is no need for a joint, there is no variation in joint performance, good joint performance is maintained, and labor is significantly saved. That is, the joint quality is remarkably improved as compared with the case of manual welding, and uniform welding with no skill difference and no variation can be performed. Further, as shown in FIG. 7, the multi-layer automatic welding device can be easily disassembled and installed, and has a simple structure, which facilitates operability and maintenance management. One person can easily carry and install it. Further, the manufacturing cost of the multi-layer automatic welding device can be manufactured at a low price. In addition, in this welding method,
It is possible to join the rebar joints in all positions. Further, since the welding worker is mainly engaged in the installation and monitoring of the multi-layer automatic welding device, the disaster and safety and health peculiar to welding can be improved. Further, since the amount of rotation of the multi-layer automatic welding apparatus is one rotation or more with respect to the reinforcing bar axis and continuous welding is performed, it is possible to prevent the occurrence of a welding defect which is a problem at the arc starting point. In addition, since the cross-sectional shape of the reinforcing bar joint is finished to be almost the same as that of the reinforcing bar material, it is advantageous in construction. In addition, stress concentration can be prevented. Therefore, it is possible to provide an excellent reinforcing bar joint in accordance with the construction work which becomes larger and larger in the future.

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

【図１】鉄筋の多層自動溶接装置およびその溶接法の一
実施例を示す斜視図FIG. 1 is a perspective view showing an embodiment of a multi-layer automatic welding device for reinforcing bars and a welding method thereof.

【図２】鉄筋の多層自動溶接装置の周辺機器を示す構成
図FIG. 2 is a configuration diagram showing peripheral equipment of a multi-layer automatic welding device for reinforcing bars.

【図３】回転伝達機構を示す平面図FIG. 3 is a plan view showing a rotation transmission mechanism.

【図４】溶接ビードの積層法を示す説明図FIG. 4 is an explanatory view showing a welding bead laminating method.

【図５】溶接状態を示す説明図FIG. 5 is an explanatory view showing a welding state

【図６】鉛直鉄筋継手以外の多層自動溶接装置の設置方
法を示す斜視図FIG. 6 is a perspective view showing an installation method of a multi-layer automatic welding device other than a vertical reinforcing bar joint.

【図７】鉄筋の多層自動溶接装置および分解状態を示す
斜視図FIG. 7 is a perspective view showing a multi-layer automatic welding device for reinforcing bars and a disassembled state.

【符号の説明】[Explanation of symbols]

１ 分割円盤状材料 ２ 分割円盤状材料 ３ 止め具 ４ 止め具 ５ 分割円筒状材料 ６ 分割円筒状材料 ７ 溶接トーチ ８ 溶接ノズル ９ 溶接チップ １０ ケーブル類 １１ 位置補正装置 １２ 第１面歯車 １３ 第２面歯車 １４ 駆動モータ １５ バイスＡ １６ バイスＢ １７ 上鉄筋 １８ 下鉄筋 １９ 円錐状開先 ２０ 鉄筋固定治具 ２１ Ｉ形開先形状 ２２ 溶接ビード ２３ 駆動モータ出力スイッチ ２４ 溶接条件出力スイッチ ２５ 溶接ワイヤ送給装置 ２６ ガスボンベ ２７ ガス流量計 ２８ 溶接機電源 ２９ 駆動モータ用ケーブル ３０ 水平鉄筋 1 split disc material 2 split disc material 3 stopper 4 stopper 5 split cylindrical material 6 split cylindrical material 7 welding torch 8 welding nozzle 9 welding tip 10 cables 11 position corrector 12 first surface gear 13 second Face gear 14 Drive motor 15 Vise A 16 Vise B 17 Upper rebar 18 Lower rebar 19 Conical groove 20 Reinforcing bar fixing jig 21 I-shaped groove 22 Weld bead 23 Drive motor output switch 24 Welding condition output switch 25 Welding wire feeding switch Feeder 26 Gas cylinder 27 Gas flow meter 28 Welder power supply 29 Drive motor cable 30 Horizontal rebar

Claims (2)

【特許請求の範囲】[Claims] 【請求項１】 円盤状材料に歯、プーリ等を設け、円盤
状材料の中心に空孔を設け、円盤状材料を分割した分割
円盤状材料が止め具により一体とし、分解、合体が自在
とし、分割円盤状材料に位置補正装置と、位置補正装置
に溶接機電源における溶接トーチ等を設け、分割円盤状
材料の空孔に、円筒状の材料を分割した分割円筒状材料
を取付け、溶接トーチの回動手段は駆動モータ等を用い
てて、円盤状材料に設けた歯、プーリ等を第１面歯車と
し、駆動モータに取り付けられたピニオン、ベルト等を
第２面歯車とすると、駆動モータの出力とともに、第２
面歯車によって同期回動する第１面歯車を介して鉄筋軸
心まわりに回動せしめる機能とした、以上のごとく構成
したことを特徴とする、鉄筋の多層自動溶接装置1. A disk-shaped material is provided with teeth, pulleys, etc., a hole is provided in the center of the disk-shaped material, and the divided disk-shaped material obtained by dividing the disk-shaped material is integrated by a stopper so that the disk-shaped material can be disassembled and united freely. , A position correcting device for the divided disc material, a welding torch in the welding machine power supply for the position correcting device, etc., a divided cylindrical material obtained by dividing a cylindrical material into the holes of the divided disc material, and a welding torch. As the rotating means, a drive motor or the like is used. If the teeth, pulleys or the like provided on the disk-shaped material are the first surface gears, and the pinion, belt, etc. attached to the drive motor are the second surface gears, the drive motor is With the output of
A multi-layer automatic welding device for reinforcing bars, which has a function of rotating around the axis of the reinforcing bar via a first surface gear that rotates synchronously with the surface gear, and is configured as described above. 【請求項２】 鉄筋の端面を円錐状、多角錐状とし、請
求項１記載の多層自動溶接装置を設置し、ガスシールド
アーク溶接法、ノンガスアーク溶接法等を用いて、鉄筋
軸まわりに、溶接トーチ等の自動回動により、溶接ワイ
ヤは鉄筋開先内を追従し、鉄筋の軸心から開先内を肉盛
溶接することを特徴とする、請求項１記載の全姿勢鉄筋
の多層自動溶接装置を用いて実施する、溶接法2. The end face of the reinforcing bar is formed into a conical shape or a polygonal pyramid shape, the multi-layer automatic welding apparatus according to claim 1 is installed, and by using a gas shield arc welding method, a non-gas arc welding method, or the like, around the reinforcing bar axis, The multi-layer automatic rebar of all positions according to claim 1, characterized in that the welding wire follows the inside of the groove of the rebar by automatic rotation of the welding torch, etc., and overlay welding is performed from the axial center of the rebar to the inside of the groove. Welding method performed using a welding device