JPS6331306B2 - - Google Patents
Info
- Publication number
- JPS6331306B2 JPS6331306B2 JP58209655A JP20965583A JPS6331306B2 JP S6331306 B2 JPS6331306 B2 JP S6331306B2 JP 58209655 A JP58209655 A JP 58209655A JP 20965583 A JP20965583 A JP 20965583A JP S6331306 B2 JPS6331306 B2 JP S6331306B2
- Authority
- JP
- Japan
- Prior art keywords
- stud
- tip
- shielding
- operating rod
- cylinder
- 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
Links
- 238000003466 welding Methods 0.000 claims description 19
- 239000002184 metal Substances 0.000 claims description 4
- 229910052751 metal Inorganic materials 0.000 claims description 4
- 239000012768 molten material Substances 0.000 claims description 4
- 230000002093 peripheral effect Effects 0.000 claims description 2
- 239000007789 gas Substances 0.000 description 33
- 239000000463 material Substances 0.000 description 10
- 239000010953 base metal Substances 0.000 description 7
- 238000007789 sealing Methods 0.000 description 3
- XKRFYHLGVUSROY-UHFFFAOYSA-N Argon Chemical compound [Ar] XKRFYHLGVUSROY-UHFFFAOYSA-N 0.000 description 2
- 229910052782 aluminium Inorganic materials 0.000 description 2
- XAGFODPZIPBFFR-UHFFFAOYSA-N aluminium Chemical compound [Al] XAGFODPZIPBFFR-UHFFFAOYSA-N 0.000 description 2
- 230000000694 effects Effects 0.000 description 2
- 238000000034 method Methods 0.000 description 2
- 230000002787 reinforcement Effects 0.000 description 2
- XEEYBQQBJWHFJM-UHFFFAOYSA-N Iron Chemical group [Fe] XEEYBQQBJWHFJM-UHFFFAOYSA-N 0.000 description 1
- 229910052786 argon Inorganic materials 0.000 description 1
- 238000005516 engineering process Methods 0.000 description 1
- 230000005284 excitation Effects 0.000 description 1
- 239000000155 melt Substances 0.000 description 1
- 150000002739 metals Chemical class 0.000 description 1
- 238000012856 packing Methods 0.000 description 1
- 229910052573 porcelain Inorganic materials 0.000 description 1
Classifications
-
- B—PERFORMING OPERATIONS; TRANSPORTING
- B23—MACHINE TOOLS; METAL-WORKING NOT OTHERWISE PROVIDED FOR
- B23K—SOLDERING OR UNSOLDERING; WELDING; CLADDING OR PLATING BY SOLDERING OR WELDING; CUTTING BY APPLYING HEAT LOCALLY, e.g. FLAME CUTTING; WORKING BY LASER BEAM
- B23K9/00—Arc welding or cutting
- B23K9/20—Stud welding
Description
【発明の詳細な説明】
〔産業上の利用分野〕
本発明はスタツド溶接銃に掴ませたスタツドと
母材間のアークをシールドガスで遮蔽する装置に
関する。DETAILED DESCRIPTION OF THE INVENTION [Field of Industrial Application] The present invention relates to a device for shielding an arc between a stud gripped by a stud welding gun and a base metal with a shielding gas.
従来のスタツド溶接銃に備えるガス遮蔽装置
は、第３図に示す如く断面浅い皿形をなすフート
３０と耐火磁器製のフエルール３３を用いてお
り、フート３０は端面に２本のチユーブ３１，３
１を取付けると共に芯孔３２をあけ、フエルール
３３も端面に芯孔３４をあけて下縁の全周に多数
の切込み３５を設け、フート３０を脚杆７に取付
けてスタツドＳの尖端部にかぶせたフエルール３
３を掴み、両者の芯孔３２，３４の孔縁間に環状
のパツキング３６を介装している。この従来装置
は溶接時にシールドガスＧをフート３０の内部へ
送込み、シールドガスが多数の切込み３５からフ
エルール３３の中へ流入し、フエルールの内部全
間に充満してスタツドと母材間のアークを遮蔽す
る。ところでスタツドＳの先端部と母材Ｐの一部
がアーク電流のジユール熱で溶融する際多量の高
温ガスを発生し、母材に亜鉛メツキが施されてい
る場合は高温ガスは特に大量となり、その一部は
芯孔３４，３２を通つて上方へ流れるが、大部分
は側方へ流れて切込み３５から流出する。シール
ドガスＧの流れはこの高温ガス流とは逆向きとな
るので、フエルール内で乱流を生じ、このため従
来装置はアルミニウムのスタツド溶接において余
盛に多数のブローホールが発生するので、スタツ
ドの溶接強度が弱いという重大な欠陥がある。
As shown in FIG. 3, the gas shielding device for a conventional stud welding gun uses a foot 30 with a shallow dish-shaped cross section and a ferrule 33 made of fireproof porcelain.
1, a core hole 32 is drilled at the same time as the ferrule 33, and a core hole 34 is drilled in the end face of the ferrule 33, and a large number of notches 35 are provided around the entire circumference of the lower edge.The foot 30 is attached to the leg rod 7, and the foot 30 is placed over the tip of the stud S. Ferrule 3
3, and an annular packing 36 is interposed between the edges of the core holes 32 and 34 of both. This conventional device sends shielding gas G into the inside of the foot 30 during welding, and the shielding gas flows into the ferrule 33 through a number of notches 35, filling the entire inside of the ferrule and causing an arc between the stud and the base metal. to shield. By the way, when the tip of the stud S and a part of the base material P melt due to the joule heat of the arc current, a large amount of high-temperature gas is generated, and if the base material is galvanized, the high-temperature gas will be especially large. Some of it flows upward through the core holes 34, 32, but most of it flows sideways and exits through the notch 35. Since the flow of shielding gas G is in the opposite direction to this high-temperature gas flow, turbulence is generated within the ferrule.As a result, when conventional equipment welds aluminum studs, many blowholes occur in the excess welding. There is a serious flaw in that the weld strength is weak.
これを防ぐためスタツドの外周にシールドガス
を流下させる方法が提案されている。例えば特開
昭56―50785号、実公昭57―54931号公報に開示さ
れたものがある。この公知技術はスタツドの外周
に設けた筒状のシールド部材内をシールドガスを
単に流下させるだけで、シールドガスが均一な層
流となり難い。 To prevent this, a method has been proposed in which a shielding gas is caused to flow down around the outer circumference of the stud. For example, there are those disclosed in Japanese Patent Application Laid-Open No. 56-50785 and Japanese Utility Model Publication No. 57-54931. This known technique simply causes the shielding gas to flow down inside the cylindrical shielding member provided around the outer periphery of the stud, and it is difficult for the shielding gas to form a uniform laminar flow.
本発明はこれに鑑みて余盛に生ずるブローホー
ルを減少させ、かつ強固なスタツド溶接を行える
ようシールドガスを均一な層流としてスタツド外
周よりその先端に向つて流下させることを目的と
する。 In view of this, it is an object of the present invention to reduce the blowholes that occur in the extra material and to flow the shielding gas in a uniform laminar flow from the outer periphery of the stud toward its tip in order to perform strong stud welding.
先端にチヤツクを結合した作動杆にシールドガ
スの流路を刳抜いて先端部の外周面に数個の出口
を等分角に設け、作動杆の中間部からチヤツクを
経てスタツドの先端近くまでを囲む長い筒状の遮
蔽筒を設けるとともにこの遮蔽筒内にシールドガ
スを均一な層流とするフイルターを配設し、遮蔽
筒内を流下する均一な層流のシールドガスを該筒
先端から噴出させるように構成する。
A shielding gas flow path is bored out in the operating rod with a chuck attached to the tip, and several outlets are provided at equal angles on the outer circumferential surface of the tip, from the middle of the operating rod through the chuck to near the tip of the stud. A long cylindrical shielding tube is provided to surround the shielding tube, and a filter is placed inside this shielding tube to make the shielding gas into a uniform laminar flow, and a uniform laminar flow of the shielding gas flowing down inside the shielding tube is ejected from the tip of the tube. Configure it as follows.
以下本発明を図示の実施例にもとづいて説明す
る。
The present invention will be explained below based on the illustrated embodiments.
図において１は溶接銃の本体で、円筒形のコア
の励磁コイルを巻いた電磁石（図示なし）を内蔵
し、２本のコード２，３を挿入した握り４の根元
にスイツチ５を設け、コアに遊嵌する可動鉄芯に
作動杆６を結合して本体１の前面から突出させ
る。７は作動杆６の直下に設けた２本の脚杆で、
根元を本体１の前面下部に固く螺合して作動杆６
の前方へ長く伸ばし、先端に固定した肉厚の足片
８に３本の針状の突起９を植立し、スタツドＳを
溶接する際この突起を母材Ｐに押付けて溶接銃の
ぐらつきを防止する。１０は作動杆６に連なるチ
ヤツクで、その後端を作動杆の端面の凹み１１に
固く嵌込んで一体に結合し、軸線方向に切つた数
本の割溝１２を利用してスタツドＳを適度の強さ
で掴ませる。 In the figure, 1 is the main body of the welding gun, which has a built-in electromagnet (not shown) with an excitation coil wound around a cylindrical core, and a switch 5 is installed at the base of the grip 4 into which two cords 2 and 3 are inserted, An operating rod 6 is coupled to a movable iron core that is loosely fitted into the main body 1 and protrudes from the front surface of the main body 1. 7 is two leg rods installed directly below the operating rod 6,
The base is firmly screwed into the front lower part of the main body 1, and the operating rod 6 is attached.
Three needle-like protrusions 9 are planted on a thick foot piece 8 that is extended forward and fixed at the tip, and when welding the stud S, these protrusions are pressed against the base material P to prevent wobbling of the welding gun. To prevent. Reference numeral 10 denotes a chuck connected to the operating rod 6, whose rear end is firmly fitted into a recess 11 on the end surface of the operating rod, and is connected integrally. Let me grab you with my strength.
作動杆６の中心線上にシールド用アルゴンガス
（シールドガスと記す）の流路１３を刳抜き、作
動杆の後端に接手管１４を螺合してチユーブ１５
を挿着し、先端部の外周面に環状溝１６を切つて
数個の出口１７を等分角にあけ、チユーブ１５を
通じて作動杆内へ送込んだシールドガスＧを先端
部の外周面から万遍なく流出させる。２０は長い
円筒状の遮蔽筒で、作動杆６の中間部からチヤツ
ク１０を経てスタツドＳの先端近くまでを囲み、
この遮蔽筒２０の先端を足片８にあけた芯孔１８
に固く嵌め、両者を一体に結合することにより脚
杆７を介して遮蔽筒２０を本体１に固定する。遮
蔽筒２０は後端の内外にメタル２１と蛇腹状の短
い封止筒２２を取付けて作動杆６に密接させ、こ
れらのメタル２１と封止筒２２により作動杆６の
動きを妨げることなく遮蔽筒２０の後端を塞ぐ。
遮蔽筒２０は先端近くの内面に網目のフイルター
２３を取付けてシールドガスの流れを整え、先端
にブツシユ２４を固く嵌込んでスタツドＳとの間
隔を狭め、ブツシユの背面２５をテーパ状に作つ
てシールドガスが均一な層流となつてスムーズに
流れるようにする。 A channel 13 for shielding argon gas (referred to as shielding gas) is bored out on the center line of the operating rod 6, and a joint tube 14 is screwed to the rear end of the operating rod to form a tube 15.
An annular groove 16 is cut on the outer circumferential surface of the tip, and several outlets 17 are opened at equal angles, so that the shielding gas G sent into the operating rod through the tube 15 is released from the outer circumferential surface of the tip. Let it flow out evenly. 20 is a long cylindrical shielding tube that surrounds the middle part of the operating rod 6 through the chuck 10 to near the tip of the stud S,
A core hole 18 made in the leg piece 8 at the tip of this shielding tube 20
The shielding cylinder 20 is fixed to the main body 1 via the leg rods 7 by firmly fitting the two together. The shielding cylinder 20 has a metal 21 and a short bellows-shaped sealing cylinder 22 attached to the inside and outside of the rear end and is brought into close contact with the operating rod 6, and these metals 21 and sealing cylinder 22 can shield the operating rod 6 without hindering its movement. The rear end of the tube 20 is closed.
The shielding cylinder 20 has a mesh filter 23 attached to the inner surface near the tip to adjust the flow of the shielding gas, a bushing 24 is tightly fitted to the tip to narrow the distance from the stud S, and the rear surface 25 of the bushing is made tapered. To ensure that the shielding gas flows smoothly in a uniform laminar flow.
次に上述の如く構成する装置の作動について説
明する。 Next, the operation of the apparatus configured as described above will be explained.
スタツドＳを母片Ｐに溶接する際スタツドＳを
チヤツク１０に掴ませてその尖端を母材Ｐに当
て、握り４を持つて足片の突起９を母材に押し付
け、溶接銃がぐらつかないようにしてスイツチ５
を押す。スイツチ５が押されるとスタツドＳから
母材Ｐへ瞬間的に大電流が流れ、同時に内部の電
磁石が付勢されて作動杆６が僅かに後退し、スタ
ツドの尖端を母材Ｐから離してその間に強いアー
クが発生する。その結果アーク電流のジユール熱
でスタツドの先端部の母材の一部が溶融して盛上
がり、タイマーの設定時間後にスタツドＳがばね
（図示なし）で押出され、盛上がつた溶融物が固
まつて余盛（図示なし）となり、スタツドＳが母
材Ｐに溶接されてその付根が余盛に囲まれる。こ
の溶接時にチユーブ１５を通じて作動杆内の流路
１３へ高圧のシールドガスを送込むと、このガス
は環状溝１６にあけた多数の出口１７から万遍な
く均一に流出して遮蔽筒２０の内部に充満する。
遮蔽筒は後端をメタル２１と封止筒２２で閉塞し
ているから、シールドガスＧはチヤツク１０の周
面に添うて先端部へ流れ、網目状のフイルター２
３を通過する。このフイルター２３にてシールド
ガスは均一な層流となり、さらに先端部へ流れ
る。遮蔽筒の先端内周面にはテーパ状のブツシユ
２４が形成されているのでこのブツシユ２４で均
一な層流となつたシールドガスは絞られてスタツ
ドＳの先端部の周面を軸線方向に流れ、遮蔽筒２
０の先端から噴出して母材Ｐに添うて突起９，９
の間を四方へ万遍なく流れる。このシールドガス
Ｇはスタツドの尖端と母材Ｐとの間に生ずるアー
クを遮蔽し、アーク電流のジユール熱による溶融
物を押さえて余盛を形成し、溶融物から発生する
高温ガスがシールドガスと同じ方向に流れるので
両者は層流状となり、従来装置のように乱流を生
じないから、アルミニウムのスタツド溶接におけ
る余盛のブローホールが著るしく減少し、従つて
母材に対するスタツドの溶接強度が大巾に向上す
る。 When welding the stud S to the base piece P, hold the stud S in the chuck 10, apply its tip to the base metal P, and hold the grip 4 to press the protrusion 9 of the foot piece against the base metal to prevent the welding gun from wobbling. Switch 5
Press. When the switch 5 is pressed, a large current momentarily flows from the stud S to the base material P, and at the same time, the internal electromagnet is energized, causing the operating rod 6 to move back slightly, separating the tip of the stud from the base material P, and moving the tip of the stud away from the base material P. A strong arc occurs. As a result, part of the base material at the tip of the stud melts and bulges due to the joule heat of the arc current, and after the time set by the timer, the stud S is pushed out by a spring (not shown), and the molten material that has formed a bulge solidifies. The stud S is welded to the base metal P and its base is surrounded by the reinforcement (not shown). During this welding, when high-pressure shielding gas is sent through the tube 15 to the flow path 13 in the working rod, this gas evenly flows out from the numerous outlets 17 formed in the annular groove 16 and flows inside the shielding cylinder 20. filled with.
Since the rear end of the shielding tube is closed by the metal 21 and the sealing tube 22, the shielding gas G flows along the circumferential surface of the chuck 10 to the tip, and passes through the mesh filter 2.
Pass 3. The shielding gas becomes a uniform laminar flow in this filter 23 and further flows toward the tip. Since a tapered bushing 24 is formed on the inner peripheral surface of the tip of the shielding tube, the shielding gas, which has become a uniform laminar flow, is constricted by this bushing 24 and flows along the circumferential surface of the tip of the stud S in the axial direction. , shielding tube 2
Projections 9, 9 eject from the tip of 0 and follow the base material P.
It flows evenly in all directions between the two. This shielding gas G shields the arc that occurs between the tip of the stud and the base metal P, suppresses the molten material due to Joule heat of the arc current, and forms a surplus, and the high temperature gas generated from the molten material becomes the shielding gas. Because they flow in the same direction, both flow in a laminar flow and do not produce turbulence like in conventional equipment, which significantly reduces blowholes in the reinforcement when welding aluminum studs, and therefore improves the welding strength of the stud relative to the base metal. will improve dramatically.
本発明による時は溶接銃にスタツドとチヤツク
及び作動杆を囲む長い筒状の遮蔽筒を設け、この
遮蔽筒内を均一な層流となつたシールドガスを流
下させその先端から噴出させて溶融物の高温ガス
と同じ方向に流れるようにしているので、シール
ドガスの乱流が皆無となり、確実なシールドが行
えるとともに余盛のブローホールが著るしく減少
し、母材に対して極めて強固なスタツド溶接を行
いうる効果がある。
According to the present invention, the welding gun is provided with a long cylindrical shielding tube that surrounds the stud, chuck, and operating rod, and a uniform laminar flow of shielding gas flows down inside the shielding tube and is ejected from the tip of the shielding tube. Since the shielding gas flows in the same direction as the high-temperature gas, there is no turbulence in the shielding gas, ensuring reliable shielding and significantly reducing blowholes in the backing, making the stud extremely strong against the base material. It has the effect of being able to perform welding.
図面は本発明の一実施例を示すもので、第１図
は実施例を備えるスタツド溶接銃の側面図、第２
図は実施例の要部を拡大した断面図、第３図は従
来装置の断面図である。
なお１は溶接銃の本体、６は作動杆、７は脚
杆、８は足片、９は突起、１０はチヤツク、Ｓは
スタツド、Ｇはシールドガス、１３は作動杆内の
流路、１７は出口、１８は足片の芯孔、２０は遮
蔽筒である。
The drawings show one embodiment of the present invention, and FIG. 1 is a side view of a stud welding gun equipped with the embodiment, and FIG.
The figure is an enlarged cross-sectional view of the main part of the embodiment, and FIG. 3 is a cross-sectional view of a conventional device. 1 is the main body of the welding gun, 6 is the operating rod, 7 is the leg rod, 8 is the foot piece, 9 is the protrusion, 10 is the chuck, S is the stud, G is the shielding gas, 13 is the flow path in the operating rod, 17 is an outlet, 18 is a core hole of a leg piece, and 20 is a shielding cylinder.
Claims (1)
溶融物の高温ガスと同じ方向に流れるようにした
スタツド溶接銃において、作動杆の先端にチヤツ
クを結合し、かつ作動杆先端部の外周面に数個の
出口を等分角に設けて遮蔽筒内に開口し、作動杆
の先端部にチヤツクを介してスタツドを設け、こ
の作動杆の中間部からスタツドの先端近くまでを
囲む長い筒状の遮蔽筒を、メタルを介して封止的
に作動杆に設けるとともにこの遮蔽筒内で、かつ
スタツドの外周位置にシールドガスを均一な層流
する網目状のフイルターを配設し、遮蔽筒先端部
内径を小径とし、遮蔽筒内を流下する均一な層流
のシールドガスを該筒先端のスタツド外周部から
噴出させるように構成したことを特徴とするスタ
ツド溶接銃のガス遮蔽装置。1. In a stud welding gun in which shielding gas is ejected from the tip of the shielding cylinder so that it flows in the same direction as the high-temperature gas of the molten material, a chuck is connected to the tip of the operating rod, and a number of holes are attached to the outer peripheral surface of the tip of the operating rod. A long cylindrical shield is formed, which opens into the shield cylinder with two outlets arranged at equal angles, and a stud is installed at the tip of the operating rod via a chuck, and the long cylindrical shield surrounds the middle part of the operating rod to near the tip of the stud. A cylinder is sealed on the operating rod through metal, and a mesh filter is installed inside the shield cylinder and around the outer periphery of the stud to allow a uniform laminar flow of the shielding gas. 1. A gas shielding device for a stud welding gun, characterized in that the shielding cylinder has a small diameter and is configured so that a uniform laminar flow of shielding gas flowing down inside the shielding cylinder is ejected from the outer periphery of the stud at the tip of the cylinder.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| JP20965583A JPS60102278A (en) | 1983-11-07 | 1983-11-07 | Gas shielding device for stud welding gun |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| JP20965583A JPS60102278A (en) | 1983-11-07 | 1983-11-07 | Gas shielding device for stud welding gun |
Publications (2)
| Publication Number | Publication Date |
|---|---|
| JPS60102278A JPS60102278A (en) | 1985-06-06 |
| JPS6331306B2 true JPS6331306B2 (en) | 1988-06-23 |
Family
ID=16576398
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| JP20965583A Granted JPS60102278A (en) | 1983-11-07 | 1983-11-07 | Gas shielding device for stud welding gun |
Country Status (1)
| Country | Link |
|---|---|
| JP (1) | JPS60102278A (en) |
Families Citing this family (3)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| JPH0238176U (en) * | 1988-09-03 | 1990-03-14 | ||
| US20150375332A1 (en) * | 2014-06-30 | 2015-12-31 | Newfrey Llc | Non-contact laminar flow drawn arc stud welding nozzle and method |
| CN106994549A (en) * | 2017-04-28 | 2017-08-01 | 广州瑞松北斗汽车装备有限公司 | Vision guide stud welding robot |
Citations (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| JPS5650785A (en) * | 1979-09-14 | 1981-05-08 | Trw Inc | Method and device for welding stud |
| JPS5754931U (en) * | 1980-09-18 | 1982-03-31 |
-
1983
- 1983-11-07 JP JP20965583A patent/JPS60102278A/en active Granted
Patent Citations (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| JPS5650785A (en) * | 1979-09-14 | 1981-05-08 | Trw Inc | Method and device for welding stud |
| JPS5754931U (en) * | 1980-09-18 | 1982-03-31 |
Also Published As
| Publication number | Publication date |
|---|---|
| JPS60102278A (en) | 1985-06-06 |
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