WO1998042472A1 - Welding torch tip and welding torch - Google Patents

Welding torch tip and welding torch Download PDF

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Publication number
WO1998042472A1
WO1998042472A1 PCT/JP1998/001243 JP9801243W WO9842472A1 WO 1998042472 A1 WO1998042472 A1 WO 1998042472A1 JP 9801243 W JP9801243 W JP 9801243W WO 9842472 A1 WO9842472 A1 WO 9842472A1
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WO
WIPO (PCT)
Prior art keywords
tip
welding
coil
wire
welding wire
Prior art date
Application number
PCT/JP1998/001243
Other languages
French (fr)
Japanese (ja)
Inventor
Osamu Ishikawa
Seikichi Nakajima
Original Assignee
Warner Chemical Co., Ltd.
N And S Co., Ltd.
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 Warner Chemical Co., Ltd., N And S Co., Ltd. filed Critical Warner Chemical Co., Ltd.
Publication of WO1998042472A1 publication Critical patent/WO1998042472A1/en

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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
    • B23K9/12—Automatic feeding or moving of electrodes or work for spot or seam welding or cutting
    • B23K9/122—Devices for guiding electrodes, e.g. guide tubes

Definitions

  • a welding torch of an arc welding machine usually includes a nozzle for injecting a shielding gas such as carbon dioxide gas, and a tip installed inside the nozzle.
  • This tip is usually cylindrical, and serves to insert a wire automatically supplied from a wire supply device and guide the wire to a welding site.
  • the welding wire passes through the inside of the tip of the cylindrical body, and the welding wire receives electric power for arc generation when passing through the inside of the tip.
  • a welding torch with such a structure, an arc is generated between the tip of the welding wire and the work to be welded, and the heat melts the welding surface of the welding wire and the work to be welded.
  • the shield gas shields the atmosphere from the atmosphere and welds the object in the shield gas atmosphere.
  • the tips of conventional welding torches are usually cylindrical and long in their entirety, and there is no flexibility in the internal passage through which the welding wire passes. Therefore, if the welding wire is bent, it will be difficult to pass through the tip.
  • An object of the present invention is to provide a welding torch tip and a welding torch which are excellent in power supply, allow a welding wire to pass easily, and have low wear. It is another object of the present invention to provide a welding torch tip and a welding torch which are easy to manufacture and have a high degree of freedom in selecting a material.
  • the present invention is configured as follows to achieve the above object.
  • a passage in the tip through which the welding wire passes is formed of a flexible coil. Since this welding torch tip is a flexible coil formed by spirally winding a linear body, it deforms following the shape of the welding wire. Therefore, the contact area with the welding wire is increased as compared with the conventional cylindrical tip, and the tip is almost uniformly contacted with the welding wire over the entire length, so that the power feeding property is improved. Also, when the welding wire is peeled off, the peeled-off hole enters the gap inside the coil-shaped tip, thereby preventing the passage of the welding wire from being clogged. Deformation of the tip also makes it easier for bent welding wires to pass through tip ⁇
  • the tip can be formed by a plurality of coils in which a tip inner passage through which a welding wire is inserted is overlapped. In this case, the rigidity of the chip increases.
  • the coil may be formed by winding two wires made of different materials into a double helix, or by winding a larger number of wires made of different materials in parallel to form a spiral. it can.
  • Another configuration of the present invention is a tip that is used for a welding torch of an arc welding machine and supplies power to a welding wire, comprising: a tubular body having a through hole having a predetermined diameter; And a flexible coil through which the welding wire passes.
  • the coil In this welding torch tip, the coil is inserted into and out of the through-hole so that the coil can be inserted into and removed from the tubular body. It is possible to provide a stopping means, for example, a stopper for locking the coil by forming a passage end with a small diameter, etc. In this case, the coil which is a welding tip can be easily replaced.
  • the through hole may be a screw hole into which the welding wire is screwed in. In this case, the coil is extremely reliably prevented from coming off.
  • the coil can be protruded from an insertion-side end of the welding wire of the through hole.
  • the projecting end of the coil is formed to have a large diameter, and the holder abutting on the projecting end of the coil can be detachably attached to the insertion end of the cylindrical welding wire.
  • the insertion opening of the welding wire is formed by a flexible coil, even if the insertion direction of the welding wire is slightly shifted during insertion, this can be suppressed. Also, by removing the holder, the coil can be easily removed from the through hole and replaced.
  • the coil is preferably made of a tungsten alloy or a copper alloy in order to improve wear resistance.
  • the chip can be manufactured simply by winding a wire into a coil shape, which significantly reduces the number of manufacturing steps compared to a conventional case where a small diameter through hole is made to pass a welding wire through a rod-shaped member.
  • the welding torch includes a nozzle for injecting a shielding gas into a welding portion, and a tip installed in the nozzle to guide a welding wire to a welding site and supply power to the welding wire.
  • FIG. 1 is an exploded perspective view showing a welding torch of the arc welding machine according to the present invention.
  • FIG. 2 is a view showing a form of a first embodiment of the welding torch tip according to the present invention.
  • FIG. 3 is a view showing the operation of the welding chip according to the first embodiment of the present invention.
  • FIG. 4 is a view showing Example 2 of the welding torch tip according to the present invention.
  • FIG. 5 is a view showing a third embodiment of the welding torch tip according to the present invention.
  • Fig. 6 is a view showing a fourth embodiment of a thisop for a welding torch according to the present invention.
  • FIG. 7 is a view showing a fifth embodiment of the welding torch chip according to the present invention.
  • FIG. 8 is a view showing the operation of the welding torch tip according to the fifth embodiment of the present invention.
  • FIG. 9 is a view showing Embodiment 6 of the welding torch chip according to the present invention.
  • FIG. 10 is a diagram showing a disassembled state of the welding torch tip according to the sixth embodiment of the present invention.
  • BEST MODE FOR CARRYING OUT THE INVENTION Preferred embodiments of the present invention will be described below with reference to the drawings.
  • FIG. 1 is an exploded perspective view showing a welding torch 1 to which a welding torch tip according to the present invention is applied.
  • This welding torch 1 is used for an arc welding machine using carbon dioxide gas or a mixed gas as a shielding gas.
  • the welding torch 1 includes a torch body 3 connected to a tip of a torch holder 2, an insulating joint 4, an orifice 5, a tip 6 according to the first embodiment of the present invention, and a nozzle 7. ing.
  • the insulating joint 4 insulates between the torch body 3 and the nozzle 7.
  • the orifice 5 straightens the shield gas supplied through the torch body 3 and supplies the same to the nozzle 7. Further, the orifice 5 is formed of an insulating material such as a ceramic, and prevents a spatter adhered in the nozzle 7 from causing a gas entanglement between the torch body 3 and the nozzle 7.
  • the chip 6 is made of a copper alloy or a tungsten alloy containing Sn, In, Mg, Zr, Ni, Mn, Cr, Si, B, Ag, Zn, Mo, Be, etc. It is formed in a coil shape.
  • the chip 6 is an alloy of 70% of stainless steel and 30% of copper.
  • the inner diameter of each coil 61 of the tip 6 is formed slightly larger than the outer diameter of the welding wire 8 as in a normal tip.
  • the coil 61 is In the standard case, the weight can be reduced to, for example, about 1.8 g, and the weight ratio can be reduced to 1/10 or less as compared with the conventional chip.
  • a mounting bracket 62 is fixed to the insertion end of the welding wire 8 of the tip 6 so as to cover a part of the tip 6.
  • the exposed surface of the chip 6 is coated with a fluororesin coating or Nimflon plating to prevent adhesion of spatter.
  • the other parts than those described above are the same as those in the related art, and a detailed description is omitted here.
  • the welding torch 1 is inserted through the welding wire 8 (FIG. 2) supplied from a wire supply device (not shown) through the cut-off body 3 to the left side of the chip 6. It is automatically fed through nozzle 7 to a weld (not shown) in front of nozzle 7.
  • electric power for arc generation is supplied to the welding wire 8.
  • the shielding gas supplied into the nozzle 7 is injected from the tip of the nozzle 7 to the welding portion, and the welded material melted by the heat of the arc generated between the tip of the welding wire 8 and the welded portion of the workpiece. Shield the welded area from the atmosphere.
  • the tip 6 of the welding torch 1 is formed of a flexible coil, the tip 6 comes into close contact with the surface of the welding wire 8 and the contact therebetween is sufficiently ensured.
  • the surface of the welding wire 8 may be rubbed and the surface 81 of the welding wire may be peeled off.
  • the peeled plating 81 enters the V-shaped gap between the wound wires of the tip 6, it is possible to prevent the passage of the welding wire 8 in the tip 6 from being clogged. Therefore, even in such a case, the welding wire 8 can be smoothly passed.
  • the chip 6 is formed of a tungsten alloy or a copper-tungsten alloy, and the wear resistance is greatly improved, so that the frequency of replacement is reduced.
  • the coil 61 is formed by winding a wire, the coil 61 is in close contact with the welding wire 8 passing therethrough. Therefore, the contact surface of both Even if the product is large, the sliding resistance between the coil 6 1 and the welding wire 8 is kept small. Not only can the welding wire 8 be inserted smoothly into the tip 6, but also the wear of the tip 6 can be drastically reduced. Was.
  • the wire of the tip 6 is formed by winding the wire into a coil shape to form a passage for the wire 8, the surface roughness of the passage is stabilized at about 3 S, and the allowable accuracy is about ⁇ 0.025 mm.
  • the material forming 1 can be selected from a wide variety of materials, including those that improve durability and those that emphasize ignitability, etc., depending on the application ( [Example 2]).
  • the chip 6 is formed by a single-turn coil
  • the coil 91 can be wound around the outside of the coil 92 by making a spring.
  • the chip 9 thus formed has higher rigidity than the above-described chip 6, and can be flexibly bent.
  • the materials of the coils 91 and 92 can be made different.
  • the outer coil 91 is made of a copper alloy and the inner coil 92 is made of a tungsten alloy, both the electric conductivity and the wear resistance can be improved.
  • FIG. 5 shows a welding torch tip 10 according to the third embodiment.
  • the tip 10 is provided with a screw hole 12 at the center of a long tubular body 11 made of copper, and a coil 13 made of a stainless steel alloy or a copper tungsten alloy is screwed into the screw hole 11. It was done. Therefore, the pitch and pitch diameter of the screw hole 12 and the coil 13 are the same.
  • Reference numeral 14 denotes a mounting screw.
  • This tip 10 also has an increased contact area between the welding wire 8 and the flexible coil 13 similarly to the above-mentioned tip 6, and the inside of the tip 10 makes it easier for the welding wire 8 to pass through. .
  • the plating 8 1 peeled off from the welding wire 8 (Fig. 3 Enters the V-shaped gap inside the coil 13, so that the inside of the chip 10 can be prevented from being clogged.
  • the coil 13 is formed of a tungsten alloy or a copper-tungsten alloy, the wear resistance is greatly improved, and the frequency of replacement can be reduced.
  • the cylindrical body 11 exposed to the arc can also be manufactured by applying heat treatment to a heat-resistant material such as carbon fiber to prevent spa from sticking.
  • FIG. 6 shows the welding torch tip 15 of the fourth embodiment.
  • the welding torch tip 10 of Example 3 described above is a force in which a coil 13 is screwed into a screw hole 12 provided at the center of the cylindrical body 11.
  • a through hole 17 that is not a screw hole is provided, and a coil 18 is fitted into the through hole 17.
  • the through hole 17 at one end of the chip 15 becomes smaller in diameter to form a stopper 19, so that the coil 18 does not come off from the chip 15.
  • the mounting bracket 20 is fixed as expected.
  • FIG. 7 shows a tip 100 for a welding torch according to the fifth embodiment.
  • a through-hole 102 is formed in a cylindrical body 101, and a coil 103 is screwed into a screw hole formed in the through-hole 102.
  • the coil 103 projects the welding wire 104 of the intercepting hole 102 from the insertion side end by a predetermined length.
  • the projecting portion 105 of the coil 103 has flexibility.
  • This welding torch tip 100 allows the coil 103 to follow the welding wire 104 even if the welding wire 104 is slightly displaced from the center axis of the through hole 102 as shown in FIG. Therefore, the welding wire 104 can be easily inserted.
  • FIG. 9 shows a welding torch tip 110 according to the sixth embodiment.
  • the welding tip 110 is slightly from the front end (the end opposite to the insertion end of the welding wire) of the tubular body 111 to the rear end (the insertion end of the welding wire).
  • Through holes 1 1 2 are formed and
  • a large diameter portion 113 is provided from the center of the hole 112 to the rear end side.
  • a holder 1 16 is detachably screwed to the rear end of the cylindrical body 1 1 1, so that the coil 1 1 4 can be freely inserted into and removed from the through hole 1 1 2.
  • a part of the coil 114 projects from the rear end of the tubular body 111 when inserted over the entire length in the through hole 112.
  • the end of the large-diameter portion 113 expands in the shape of a taper, and the projecting end of the coil 114 also expands along the end.
  • a holder 116 is detachably attached as a means for preventing the coil 114 from coming off with a screw part 117.
  • This holder 1 16 is provided with a step 1 18 for locking the coil 1 1 4.
  • the welding torch tip 110 of the sixth embodiment is divided into three parts as a whole, and has a configuration capable of maximizing the function of each part. That is, the holder 1 16 which is a joining portion of the torch and the tip 110 for welding torch, the coil 114 which is a sliding portion of the welding wire 115 and the welding tip 110, and Cylindrical body 1 1 1 which is the heat-resistant part of the arc.Based on the priority of electrical properties, mechanical properties, heat resistance, etc. required for each part, the optimum material and shape for each individual part. These are integrated so that they can be divided.
  • the present invention is a tip for a welding torch which is excellent in power supply, allows a welding wire to pass easily and causes little wear, and is applicable to a general arc welding machine. It can be used to enhance the performance of.

Abstract

In a tip (6) which is used in a welding torch (1) of an arc welding machine to supply power to a welding wire (8), an inner passage to pass the welding wire (8) therethrough is formed from a flexible coil. The inner passage in the tip (6) is flexible to closely contact with the welding wire (8) passed through the tip (6), so that power supply efficiency is improved. Further, the welding wire (8) easily passes through the tip (6) for reduced abrasion. Also, the tip (6), being simply formed by spirally winding a wire, is easy to manufacture.

Description

明 細 書 溶接トーチ用チップ及び溶接トーチ 技 術 分 野 本発明は、 アーク溶接機の溶接トーチ用チップ及び溶接トーチに関するもので ある。 背 景 技 術 アーク溶接機の溶接トーチは、 通常、 炭酸ガス等のシールドガスを噴射するノ ズルと、 このノズル内部に設置されたチップとを備えている。 このチップは通常 は円筒状であり、 ワイヤ供給装置から自動供給されるワイヤを挿通し、 このワイ ャを溶接部位に誘導する役目を果たしている。 すなわち筒状体のチップ内部を溶 接ワイヤが通過するようになっており、 溶接ワイヤはチップ内を通過するときに アーク発生用の電力を受電する。 このような構造の溶接トーチでは、 溶接ワイヤ の先端と被溶接物との間にアークを発生させ、 その熱で溶接ワイャ及び被溶接物 の溶接面が溶融され、 ノズル噴射孔ょり噴射されるシールドガスにより大気と遮 断されシールドガス雰囲気中で被溶接物が溶着される。  Description Technical Field The present invention relates to a welding torch tip and a welding torch of an arc welding machine. BACKGROUND ART A welding torch of an arc welding machine usually includes a nozzle for injecting a shielding gas such as carbon dioxide gas, and a tip installed inside the nozzle. This tip is usually cylindrical, and serves to insert a wire automatically supplied from a wire supply device and guide the wire to a welding site. In other words, the welding wire passes through the inside of the tip of the cylindrical body, and the welding wire receives electric power for arc generation when passing through the inside of the tip. In a welding torch with such a structure, an arc is generated between the tip of the welding wire and the work to be welded, and the heat melts the welding surface of the welding wire and the work to be welded. The shield gas shields the atmosphere from the atmosphere and welds the object in the shield gas atmosphere.
しかし、 従来の溶接トーチのチップは、 通常、 筒状であって全体が長尺で、 ま た溶接ワイヤが通過する内部通路に柔軟性がない。 そのため溶接ワイヤが曲がつ ていると、 それがチップを通過しにく く なる。  However, the tips of conventional welding torches are usually cylindrical and long in their entirety, and there is no flexibility in the internal passage through which the welding wire passes. Therefore, if the welding wire is bent, it will be difficult to pass through the tip.
また従来の溶接トーチでは、 溶接ワイヤとの接触によるチップの摩耗が激しく . そのためチップを頻繁に交換しなければならなかった。  In addition, in the conventional welding torch, the tip wear due to the contact with the welding wire was severe. Therefore, the tip had to be replaced frequently.
さらに、 溶接ワイヤがチップ内を通過するときに溶接ワイヤのメ ツキが剥がれ ると、 これがチップ内に詰まることがあった。 この場合は溶接ワイヤが揷通しに く くなり、 しばしばチップの交換を必要とした。  Furthermore, if the welding wire peeled off when the welding wire passed through the chip, it could become clogged in the chip. In this case, the welding wire became difficult to penetrate and often required replacement of the tip.
一方、 従来の半自動溶接機用チップは、 概ね銅合金の単一素材で形成されてい た。 このような単一素材からなるチップでは、 チップに要求される全ての機能を 十分に満たすことが困難である。 例えば銅合金からなるチップでは、 通電性に優 れるものの、 ワイヤを挿通する通路が柔軟性に乏しくなる。 湾曲したワイヤが挿 通した場合、 これとワイヤ通路の密着性が不安定となる問題があった。 したがつ てチップの重要機能であるワイヤとワイヤ通路の均一な接触を保つことができな くなる。 On the other hand, conventional semi-automatic welding machine tips are generally made of a single copper alloy material. Was. It is difficult for such a chip made of a single material to fully satisfy all the functions required of the chip. For example, a chip made of a copper alloy has excellent electrical conductivity, but the path for inserting a wire becomes less flexible. When a curved wire is inserted, there is a problem in that the adhesion between the wire and the wire passage becomes unstable. Therefore, it is impossible to maintain uniform contact between the wire and the wire path, which is an important function of the chip.
本発明の目的の一つは、 給電性に優れ、 溶接ワイヤが通過しやすくて摩耗が少 ない溶接トーチ用チップ及び溶接トーチを提供することである。 また本発明の他 の目的は製造が容易で、 素材の選択の自由度が高い溶接卜一チ用チップ及び溶接 トーチを提供することである。 発 明 の 開 示 本発明は前記の目的達成のために以下のように構成されている。  An object of the present invention is to provide a welding torch tip and a welding torch which are excellent in power supply, allow a welding wire to pass easily, and have low wear. It is another object of the present invention to provide a welding torch tip and a welding torch which are easy to manufacture and have a high degree of freedom in selecting a material. DISCLOSURE OF THE INVENTION The present invention is configured as follows to achieve the above object.
アーク溶接機の溶接トーチに用いられて溶接ワイヤに給電するチップにおいて. 溶接ワイヤが挿通するチップ内侧通路がフレキシブルなコイルで形成されている ものである。 この溶接トーチ用チップは線状体を螺旋状に巻回して形成したフレ キシブルなコイルであるので、 溶接ワイヤの形状に追随して変形する。 したがつ て従来の筒状体のチップに比べて溶接ワイヤとの接触面積が多くなると共に、 チ ップが全長に亘つて溶接ワイヤにほぼ均一に接触するので、 給電性が向上する。 また溶接ワイャのメ ッキが剥がれた場合、 剥がれたメ ッキがコィル状のチップ内 側の隙間に入り込むので、 溶接ワイヤの通路を詰まらせることが防止できる。 またチップの変形により、 曲がった溶接ワイヤでもチップ內を通過しやすくな る  In a tip used for a welding torch of an arc welding machine to supply power to a welding wire, a passage in the tip through which the welding wire passes is formed of a flexible coil. Since this welding torch tip is a flexible coil formed by spirally winding a linear body, it deforms following the shape of the welding wire. Therefore, the contact area with the welding wire is increased as compared with the conventional cylindrical tip, and the tip is almost uniformly contacted with the welding wire over the entire length, so that the power feeding property is improved. Also, when the welding wire is peeled off, the peeled-off hole enters the gap inside the coil-shaped tip, thereby preventing the passage of the welding wire from being clogged. Deformation of the tip also makes it easier for bent welding wires to pass through tip 內
前記チップは、 溶接ワイヤを挿通するチップ内側通路を重合した複数のコイル で形成することができる。 この場合はチップの剛性が高くなる。 なお、 コイルは. それぞれ素材の異なる二つの線材を二重螺旋に巻回して形成したもの、 並びにそ れ以上の数のそれぞれ素材の異なる線材を並列的に巻回して螺旋状としたものも 使用できる。 本発明の別の構成は、 アーク溶接機の溶接トーチに用いられて溶接ワイヤに給 電するチップにおいて、 所定の径の貫通孔を有する筒状体と、 _前記貫通孔内に嵌 入されて前記溶接ワイヤが揷通するフレキシブルなコイルとを備えたものである ( この溶接トーチ用チップでは、 前記コィルを前記貫通孔内に出し入れ自在に咴 入し、 前記筒状体には前記コイルの抜け止め手段、 例えば通路端をを径小に形成 してコイルを係止させるス トッパ等を設けることがができる。 この場合は、 溶接 チップであるコイルを容易に交換することができる。 他のコイルの抜け止め手段 として、 貫通孔を溶接ワイヤを螺入するネジ孔とすることが可能である。 この場 合は、 コイルの抜け止めがきわめて確実となる。 The tip can be formed by a plurality of coils in which a tip inner passage through which a welding wire is inserted is overlapped. In this case, the rigidity of the chip increases. The coil may be formed by winding two wires made of different materials into a double helix, or by winding a larger number of wires made of different materials in parallel to form a spiral. it can. Another configuration of the present invention is a tip that is used for a welding torch of an arc welding machine and supplies power to a welding wire, comprising: a tubular body having a through hole having a predetermined diameter; And a flexible coil through which the welding wire passes. (In this welding torch tip, the coil is inserted into and out of the through-hole so that the coil can be inserted into and removed from the tubular body. It is possible to provide a stopping means, for example, a stopper for locking the coil by forming a passage end with a small diameter, etc. In this case, the coil which is a welding tip can be easily replaced. In order to prevent the coil from coming off, the through hole may be a screw hole into which the welding wire is screwed in. In this case, the coil is extremely reliably prevented from coming off.
また前記贯通孔の前記溶接ワイヤの揷入側端部から、 前記コイルを突出させる ことができる。 このときコイルの突出端を大径に形成し、 このコイルの突出端に 当接するホルダを筒状体の溶接ワイヤの挿入侧端部に着脱自在に取り付けること ができる。 この場合は、 溶接ワイヤの挿入口がフレキシブルなコイルによって形 成されるので、 挿入時に溶接ワイヤの挿入方向が多少ずれてもこれを抑入するこ とができる。 またホルダの取り外しによってコイルを貫迎孔内から容易に取り出 して交換することが可能となる。  Further, the coil can be protruded from an insertion-side end of the welding wire of the through hole. At this time, the projecting end of the coil is formed to have a large diameter, and the holder abutting on the projecting end of the coil can be detachably attached to the insertion end of the cylindrical welding wire. In this case, since the insertion opening of the welding wire is formed by a flexible coil, even if the insertion direction of the welding wire is slightly shifted during insertion, this can be suppressed. Also, by removing the holder, the coil can be easily removed from the through hole and replaced.
前記コイルは耐摩耗性を向上させるために、 タングステン合金又は銅合金とす るのが望ましい。  The coil is preferably made of a tungsten alloy or a copper alloy in order to improve wear resistance.
さらに、 チップは線材を巻回してコイル状に形成するだけ製造でき、 従来のよ うに棒状部材に溶接ワイヤを通過させる小径の貫通孔をあける場合に比べて製造 工程数が大幅に削減した。  Furthermore, the chip can be manufactured simply by winding a wire into a coil shape, which significantly reduces the number of manufacturing steps compared to a conventional case where a small diameter through hole is made to pass a welding wire through a rod-shaped member.
なお、 前記溶接トーチは、 溶接部にシールドガスを喷射するノズルと、 このノ ズル内に設置されて溶接ワイャを溶接部位に誘導するとともに、 前記溶接ワイヤ に給電するチップとを備えたものとすることができる。 図面の簡単な説明  The welding torch includes a nozzle for injecting a shielding gas into a welding portion, and a tip installed in the nozzle to guide a welding wire to a welding site and supply power to the welding wire. be able to. BRIEF DESCRIPTION OF THE FIGURES
Fig. 1は本発明に係るアーク溶接機の溶接トーチを示す分解斜視図である。 FIG. 1 is an exploded perspective view showing a welding torch of the arc welding machine according to the present invention.
Fig. 2は本発明に係る溶接トーチ用チップの実施例 1の形態を示す図である。 Fig. 3は本発明に係る溶接卜一チ用チ プの実施例 1の作用を示す図である。FIG. 2 is a view showing a form of a first embodiment of the welding torch tip according to the present invention. FIG. 3 is a view showing the operation of the welding chip according to the first embodiment of the present invention.
Fig. 4は本発明に係る溶接トーチ用チ プの実施例 2を示す図である。 FIG. 4 is a view showing Example 2 of the welding torch tip according to the present invention.
Fig. 5は本発明に係る溶接トーチ用チ プの実施例 3を示す図である。  FIG. 5 is a view showing a third embodiment of the welding torch tip according to the present invention.
Fig. 6は本発明に係る溶接トーチ用チソプの実施例 4を示す図である。  Fig. 6 is a view showing a fourth embodiment of a thisop for a welding torch according to the present invention.
Fig. 7は本発明に係る溶接トーチ用チ プの実施例 5を示す図である。  FIG. 7 is a view showing a fifth embodiment of the welding torch chip according to the present invention.
Fig. 8は本発明に係る溶接トーチ用チ プの実施例 5の作用を示す図である。 FIG. 8 is a view showing the operation of the welding torch tip according to the fifth embodiment of the present invention.
Fig. 9は本発明に係る溶接トーチ用チ プの実施例 6を示す図である。 FIG. 9 is a view showing Embodiment 6 of the welding torch chip according to the present invention.
Fig. 1 0は本発明に係る溶接トーチ用チップの実施例 6の分解状態を示す図で ある。 発明を実施するための最良の形態 以下、 本発明の好適具体例を図面に基づいて説明する。  FIG. 10 is a diagram showing a disassembled state of the welding torch tip according to the sixth embodiment of the present invention. BEST MODE FOR CARRYING OUT THE INVENTION Preferred embodiments of the present invention will be described below with reference to the drawings.
〔実施例 1 〕  (Example 1)
図 1は、 本発明に係る溶接トーチ用チップを適用した溶接トーチ 1を示す分解 斜視図である。 この溶接トーチ 1は、 シールドガスとして炭酸ガスや混合ガスを 用いるアーク溶接機に用いられる。 この溶接トーチ 1は、 トーチホルダ 2の先端 部に連結されたトーチボディ 3と、 絶縁継手 4と、 オリフ ィ ス 5と、 本発叨に係 る実施例 1のチップ 6と、 ノズル 7とを備えている。  FIG. 1 is an exploded perspective view showing a welding torch 1 to which a welding torch tip according to the present invention is applied. This welding torch 1 is used for an arc welding machine using carbon dioxide gas or a mixed gas as a shielding gas. The welding torch 1 includes a torch body 3 connected to a tip of a torch holder 2, an insulating joint 4, an orifice 5, a tip 6 according to the first embodiment of the present invention, and a nozzle 7. ing.
絶縁継手 4は、 トーチボディ 3とノズル 7との間を絶縁する。 オリフィス 5は、 トーチボディ 3を介して供給されるシールドガスを整流してノズル 7内に供給す る。 また、 このオリフィス 5はセラミ ック等の絶縁材料で形成されており、 ノズ ル 7内に付着したスパッ夕により トーチボディ 3とノズル 7との問に 気的な 絡が生じるのを防止する。  The insulating joint 4 insulates between the torch body 3 and the nozzle 7. The orifice 5 straightens the shield gas supplied through the torch body 3 and supplies the same to the nozzle 7. Further, the orifice 5 is formed of an insulating material such as a ceramic, and prevents a spatter adhered in the nozzle 7 from causing a gas entanglement between the torch body 3 and the nozzle 7.
チップ 6は、 S n、 I n、 M g、 Z r、 N i、 M n、 C r、 S i 、 B、 A g、 Z n、 M o、 B e等を含む銅合金又はタングステン合金でコイル状に形成されて いる。 本実施例では、 チップ 6は夕ングステン 7 0 %、 銅 3 0 %の合金である。 また図 2に示すように、 チップ 6の各コイル 6 1の内径は、 通常のチップと同様 に溶接ワイヤ 8の外径より僅かに大きく形成されている。 実際にはコイル 6 1は、 標準的なものでは、 例えば 1 . 8 g程度の超軽量にすることができ、 従来のチッ プと比較して重量比で 1 / 1 0以下にすることができる。 The chip 6 is made of a copper alloy or a tungsten alloy containing Sn, In, Mg, Zr, Ni, Mn, Cr, Si, B, Ag, Zn, Mo, Be, etc. It is formed in a coil shape. In this embodiment, the chip 6 is an alloy of 70% of stainless steel and 30% of copper. Further, as shown in FIG. 2, the inner diameter of each coil 61 of the tip 6 is formed slightly larger than the outer diameter of the welding wire 8 as in a normal tip. Actually the coil 61 is In the standard case, the weight can be reduced to, for example, about 1.8 g, and the weight ratio can be reduced to 1/10 or less as compared with the conventional chip.
さらにチップ 6の溶接ワイヤ 8の挿入側端には、 チップ 6の一部を覆うように 取付金具 6 2が固定されている。 またチップ 6の露出面は、 フッ素樹脂コ一ティ ングまたはニムフロンメ ツキ等が施されて、 スパッ夕の付着を防止している。 な お、 上述した以外の部分は、 従来と同様なのでここでは詳細な説明を省略する。 この溶接トーチ 1においては、 図 1に示すように溶接時にはワイヤ供給装置 (図示せず） から供給された溶接ワイヤ 8 (図 2 ) カ^ 卜一チボディ 3を介して チップ 6の內側に挿通され、 ノズル 7を通ってノズル 7前方の溶接部 （図示せず） に自動的に供給される。 そして、 溶接ワイヤ 8がチップ 6内を通過してチップ 6 に接触する際、 アーク発生用の電力が溶接ワイヤ 8に供給される。  Further, a mounting bracket 62 is fixed to the insertion end of the welding wire 8 of the tip 6 so as to cover a part of the tip 6. The exposed surface of the chip 6 is coated with a fluororesin coating or Nimflon plating to prevent adhesion of spatter. The other parts than those described above are the same as those in the related art, and a detailed description is omitted here. In this welding torch 1, as shown in FIG. 1, at the time of welding, the welding torch 1 is inserted through the welding wire 8 (FIG. 2) supplied from a wire supply device (not shown) through the cut-off body 3 to the left side of the chip 6. It is automatically fed through nozzle 7 to a weld (not shown) in front of nozzle 7. When the welding wire 8 passes through the inside of the tip 6 and comes into contact with the tip 6, electric power for arc generation is supplied to the welding wire 8.
また、 ノズル 7内に供給されたシールドガスは、 ノズル 7の先端から溶接部位 に噴射され、 溶接ワイヤ 8の先端と被溶接物の溶接部位の間に発生するアークの 熱により溶融した被溶接物の溶接部位を大気から遮断する。  In addition, the shielding gas supplied into the nozzle 7 is injected from the tip of the nozzle 7 to the welding portion, and the welded material melted by the heat of the arc generated between the tip of the welding wire 8 and the welded portion of the workpiece. Shield the welded area from the atmosphere.
上述のように、 この溶接トーチ 1はチップ 6がフレキシブルなコイルで形成さ れているので、 溶接ワイヤ 8の表而にチップ 6が密着してこれらの接触が十分に 確保される。  As described above, since the tip 6 of the welding torch 1 is formed of a flexible coil, the tip 6 comes into close contact with the surface of the welding wire 8 and the contact therebetween is sufficiently ensured.
また、 チップ 6の全てのコイル 6 1が溶接ワイヤ 8にほぼ均一に接触するので、 給電性が向上する。 さらに、 溶接ワイヤ 8の形状に対応してチップ 6が変形する ので、 溶接ワイヤ 8が曲がっている場合でもその通過が容易になる。  In addition, since all the coils 61 of the chip 6 contact the welding wire 8 almost uniformly, the power supply performance is improved. Further, since the tip 6 is deformed in accordance with the shape of the welding wire 8, even if the welding wire 8 is bent, it can be easily passed.
一方、 図 3に示すように、 溶接ワイヤ 8がチップ 6を通過する際に、 溶接ワイ ャ 8の表面が擦られて溶接ワイヤ表面のメ ツキ 8 1が剥がれることがある。 この とき、 剥がれたメ ツキ 8 1がチップ 6の巻回した線材の間の V字状の隙間に入り 込むので、 チップ 6内の溶接ワイヤ 8の通路が詰まるのを防止できる。 したがつ て、 かかる場合でも溶接ワイヤ 8を滑らかに通過させることができる。  On the other hand, as shown in FIG. 3, when the welding wire 8 passes through the chip 6, the surface of the welding wire 8 may be rubbed and the surface 81 of the welding wire may be peeled off. At this time, since the peeled plating 81 enters the V-shaped gap between the wound wires of the tip 6, it is possible to prevent the passage of the welding wire 8 in the tip 6 from being clogged. Therefore, even in such a case, the welding wire 8 can be smoothly passed.
また、 チップ 6は上述したように、 タングステン合金又は銅タングステン合金 で形成されて耐摩耗性が大幅に向上するため、 交換の頻度が少なくなる。  Further, as described above, the chip 6 is formed of a tungsten alloy or a copper-tungsten alloy, and the wear resistance is greatly improved, so that the frequency of replacement is reduced.
さらには、 上述のようにコイル 6 1は線材を卷回して形成されるので、 その内 部を挿通する溶接ワイヤ 8に対してソフ 卜に密着する。 したがって両者の接触面 積が大きくても、 コイル 6 1と溶接ワイヤ 8の間の摺励抵抗は小さく抑えられて. 溶接ワイヤ 8がスムーズにチップ 6内に挿入できるだけでなく、 チップ 6の摩耗 を激減させることができた。 Further, as described above, since the coil 61 is formed by winding a wire, the coil 61 is in close contact with the welding wire 8 passing therethrough. Therefore, the contact surface of both Even if the product is large, the sliding resistance between the coil 6 1 and the welding wire 8 is kept small. Not only can the welding wire 8 be inserted smoothly into the tip 6, but also the wear of the tip 6 can be drastically reduced. Was.
また、 チップ 6は線材をコイル状に巻きワイヤ 8の通路を形成したことで、 こ の通路の面粗度は 3 S程度で安定し、 許容精度も ± 0 . 0 2 5 m m程度となった ( よってチップ 6の素材がもし難切削材であっても、 前記精度でコイル状に巻いて これを形成することは容易であり、 チップの生産性が大幅に改善された。 したが つてコイル 6 1を形成する素材は用途に応じて、 その耐久性を向上させるものや. 着火性等を重視するものなど、 各種のものを幅広く選択することが可能となった ( 〔実施例 2 〕 In addition, since the wire of the tip 6 is formed by winding the wire into a coil shape to form a passage for the wire 8, the surface roughness of the passage is stabilized at about 3 S, and the allowable accuracy is about ± 0.025 mm. ( Thus, even if the material of the chip 6 is a difficult-to-cut material, it is easy to form it by winding it into a coil with the accuracy described above, and the productivity of the chip has been greatly improved. The material forming 1 can be selected from a wide variety of materials, including those that improve durability and those that emphasize ignitability, etc., depending on the application ( [Example 2]).
上述の実施例 1では、 チップ 6を 1回巻きのコイルで形成した場合について説 明したが、 図 4に示す実施例 2のチップ 9のように、 2個のコイル 9 1、 9 2を 二重にすることもできる。 すなわちコイル 9 2の外側に Sねてコイル 9 1を卷き 付けることができる。 このようにして形成されるチップ 9は、 上述のチップ 6に 比較して剛性が高くなり、 かつ柔軟に曲げることができる。  In the first embodiment described above, the case where the chip 6 is formed by a single-turn coil has been described. However, as in the case of the chip 9 of the second embodiment shown in FIG. It can be heavy. That is, the coil 91 can be wound around the outside of the coil 92 by making a spring. The chip 9 thus formed has higher rigidity than the above-described chip 6, and can be flexibly bent.
また、 このように複数のコイルを重合してチップを形成するときは、 それぞれ のコイル 9 1、 9 2の材質を異なるものにできる。 例えば、 外側のコイル 9 1を 銅合金とし、 内側のコイル 9 2をタングステン合金とすることにより、 ί合電性と 耐摩耗性の両方を向上させることができる。  In addition, when a chip is formed by superposing a plurality of coils in this way, the materials of the coils 91 and 92 can be made different. For example, when the outer coil 91 is made of a copper alloy and the inner coil 92 is made of a tungsten alloy, both the electric conductivity and the wear resistance can be improved.
他の点については実施例 1 と同様である。  Other points are the same as in the first embodiment.
〔実施例 3〕  (Example 3)
図 5は、 実施例 3の溶接トーチ用チップ 1 0を示す。 このチップ 1 0は、 例え ば銅製の長尺な筒状体 1 1の中心にネジ孔 1 2を設け、 このネジ孔 1 1に夕ング ステン合金又は銅タングステン合金製のコイル 1 3を螺入したものである。 した がって、 ネジ孔 1 2とコイル 1 3のピッチ及びピッチ径は同一である。 なお、 符 号 1 4は取付用のネジである。  FIG. 5 shows a welding torch tip 10 according to the third embodiment. For example, the tip 10 is provided with a screw hole 12 at the center of a long tubular body 11 made of copper, and a coil 13 made of a stainless steel alloy or a copper tungsten alloy is screwed into the screw hole 11. It was done. Therefore, the pitch and pitch diameter of the screw hole 12 and the coil 13 are the same. Reference numeral 14 denotes a mounting screw.
このチップ 1 0 も上述のチップ 6と同様に、 溶接ワイヤ 8とフレキシブルなコ ィル 1 3との接触面積が増大し、 またチップ 1 0の内部の変形によって溶接ワイ ャ 8が通過しやすくなる。 また、 溶接ワイヤ 8から剥がれたメ ツキ 8 1 (図 3 は、 コイル 1 3の内側の V字状の隙間に入り込むので、 チップ 1 0の内側が詰ま るのを防止できる。 さらに、 コイル 1 3はタングステン合金又は銅タングステン 合金で形成されているので、 耐摩耗性が大幅に向上し、 これによつて交換の頻度 を少なくすることができる。 This tip 10 also has an increased contact area between the welding wire 8 and the flexible coil 13 similarly to the above-mentioned tip 6, and the inside of the tip 10 makes it easier for the welding wire 8 to pass through. . In addition, the plating 8 1 peeled off from the welding wire 8 (Fig. 3 Enters the V-shaped gap inside the coil 13, so that the inside of the chip 10 can be prevented from being clogged. Further, since the coil 13 is formed of a tungsten alloy or a copper-tungsten alloy, the wear resistance is greatly improved, and the frequency of replacement can be reduced.
アークに晒される筒状体 1 1は、 カーボン繊維などの耐熱素材にスパ'.ソ タ付着 防止処理を施して製造することもできる。  The cylindrical body 11 exposed to the arc can also be manufactured by applying heat treatment to a heat-resistant material such as carbon fiber to prevent spa from sticking.
〔実施例 4 〕  (Example 4)
図 6に、 実施例 4の溶接トーチ用チップ 1 5を示す。 上述の実施例 3の溶接卜 ーチ用チップ 1 0は、 筒状体 1 1の中心に設けたネジ孔 1 2にコィノレ 1 3を螺入 した力 実施例 4の溶接トーチ用チップ 1 5では、 銅合金で形成された R状体 1 6の中心に、 ネジ孔でない貫通孔 1 7を設け、 この貫通孔 1 7にコイル 1 8を嵌 入してある。 そしてチップ 1 5の一端の赏通孔 1 7が径小になりス卜ッパ 1 9が 形成され、 コィノレ 1 8がチップ 1 5から抜け出ないようになつている。 このよう にすれば製造が簡単となり、 またコイル 1 3を筒状体 1 1内に容易に咴入できる ( なお、 溶接ワイヤ 8の揷入側端の周囲には、 チップ 1 5の一部を想うように取 付金具 2 0が固定されている。 FIG. 6 shows the welding torch tip 15 of the fourth embodiment. The welding torch tip 10 of Example 3 described above is a force in which a coil 13 is screwed into a screw hole 12 provided at the center of the cylindrical body 11. At the center of the R-shaped body 16 formed of a copper alloy, a through hole 17 that is not a screw hole is provided, and a coil 18 is fitted into the through hole 17. Then, the through hole 17 at one end of the chip 15 becomes smaller in diameter to form a stopper 19, so that the coil 18 does not come off from the chip 15. This simplifies manufacturing and allows the coil 13 to be easily inserted into the cylindrical body 11 ( note that a part of the tip 15 is placed around the insertion end of the welding wire 8). The mounting bracket 20 is fixed as expected.
〔実施例 5 〕  (Example 5)
図 7は、 実施例 5の溶接トーチ用チップ 1 0 0を示す。 この溶接トーチ用チッ プ 1 0 0は、 筒状体 1 0 1 に貫通孔 1 0 2が形成され、 この貫通孔 1 0 2に形成 されたネジ孔にコイル 1 0 3が螺入されている。 コイル 1 0 3は、 贯迎孔 1 0 2 の溶接ワイヤ 1 0 4を挿入側端より所定の長さだけ突出している。 このコイル 1 0 3の突出部分 1 0 5はフレキシブル性を有している。  FIG. 7 shows a tip 100 for a welding torch according to the fifth embodiment. In this welding torch chip 100, a through-hole 102 is formed in a cylindrical body 101, and a coil 103 is screwed into a screw hole formed in the through-hole 102. . The coil 103 projects the welding wire 104 of the intercepting hole 102 from the insertion side end by a predetermined length. The projecting portion 105 of the coil 103 has flexibility.
この溶接トーチ用チップ 1 0 0は、 図 8に示すように溶接ワイヤ 1 0 4が貫通 孔 1 0 2の中心軸線から多少ずれていても、 コイル 1 0 3が溶接ワイャ 1 0 4に 追従して変形するので、 溶接ワイヤ 1 0 4を容易に挿入することができる。  This welding torch tip 100 allows the coil 103 to follow the welding wire 104 even if the welding wire 104 is slightly displaced from the center axis of the through hole 102 as shown in FIG. Therefore, the welding wire 104 can be easily inserted.
〔実施例 6〕  (Example 6)
図 9は、 実施例 6の溶接トーチ用チップ 1 1 0を示す。 この溶接卜一チ用チッ プ 1 1 0は、 筒状体 1 1 1の先端 （溶接ワイヤの挿入側端の反対側端） の少し手 前から後端 （溶接ワイヤの挿入側端） に向かって貫通孔 1 1 2が形成され、 貫通 孔 1 1 2の中央から後端側にかけて大径部 1 1 3が設けられている。 筒状体 1 1 1の後端にはホルダ 1 1 6が着脱自在に螺合しており、 コイル 1 1 4を貫通孔 1 1 2内に出し入れ自在に挿入できる。 コイル 1 1 4は、 貫通孔 1 1 2内の全長に 亘つて挿入したときに筒状体 1 1 1の後端からその一部が突出する。 なお、 径大 部 1 1 3の端部はテ一パ状に末広がりになり、 コイル 1 1 4の突出端もこれに沿 つて末広がりに形成される。 FIG. 9 shows a welding torch tip 110 according to the sixth embodiment. The welding tip 110 is slightly from the front end (the end opposite to the insertion end of the welding wire) of the tubular body 111 to the rear end (the insertion end of the welding wire). Through holes 1 1 2 are formed and A large diameter portion 113 is provided from the center of the hole 112 to the rear end side. A holder 1 16 is detachably screwed to the rear end of the cylindrical body 1 1 1, so that the coil 1 1 4 can be freely inserted into and removed from the through hole 1 1 2. A part of the coil 114 projects from the rear end of the tubular body 111 when inserted over the entire length in the through hole 112. The end of the large-diameter portion 113 expands in the shape of a taper, and the projecting end of the coil 114 also expands along the end.
筒状体 1 1 1の後端には、 コイル 1 1 4の抜け止め用手段として、 ホルダ 1 1 6がネジ部 1 1 7で着脱自在に取り付けられている。 このホルダ 1 1 6には、 コ ィノレ 1 1 4を係止する段差 1 1 8が設けられ、 この段差 1 1 8より後方は、 溶接 ワイヤ 1 1 5を挿入する小径のワイヤ揷入孔 1 1 9が設けられている。  At the rear end of the tubular body 111, a holder 116 is detachably attached as a means for preventing the coil 114 from coming off with a screw part 117. This holder 1 16 is provided with a step 1 18 for locking the coil 1 1 4. Behind the step 1 18, a small-diameter wire insertion hole 1 1 5 for inserting the welding wire 1 15 is provided. 9 are provided.
実施例 6の溶接トーチ用チップ 1 1 0は、 全体を三部位に分け、 各々の部位の 機能を最大限に発揮できる構成としたものである。 すなわち、 これを トーチと溶 接トーチ用チップ 1 1 0の接合部位であるホルダ 1 1 6と、 溶接ワイヤ 1 1 5と 溶接用チップ 1 1 0の摺励部位であるコイル 1 1 4 と、 またアークの耐熱部位で ある筒状体 1 1 1 とに分け、 各部位が必要とする電気的特性や機械的特性、 耐熱 性等の優先順位に基づき、 それぞれの個々の部品について最適な素材や形状を選 択して、 これらを分割可能に一体化してある。  The welding torch tip 110 of the sixth embodiment is divided into three parts as a whole, and has a configuration capable of maximizing the function of each part. That is, the holder 1 16 which is a joining portion of the torch and the tip 110 for welding torch, the coil 114 which is a sliding portion of the welding wire 115 and the welding tip 110, and Cylindrical body 1 1 1 which is the heat-resistant part of the arc.Based on the priority of electrical properties, mechanical properties, heat resistance, etc. required for each part, the optimum material and shape for each individual part. These are integrated so that they can be divided.
この溶接トーチ用チップ 1 1 ◦は、 図 1 0に示すようにホルダ 1 1 6を筒状体 1 1 1から取り外すことにより、 コイル 1 1 4を簡単に交換することができるの で、 メ ンテナンスが容易になる。 またコイル 1 1 4の突出端が末広がりに形成さ れているので、 コイル 1 1 4内への溶接ワイヤ 1 1 5の挿入が容易である。 産業上の利用可能性 本発明は、 給電性に優れ、 溶接ワイヤが通過しやすく摩耗が少ない溶接トーチ 用チップであって、 一般的なアーク溶接機について適用が可能であり、 アーク溶 接機用の性能を高めるものとして利用可能である。  Maintenance of the welding torch tip 1 1 1 ◦ is possible because the coil 1 1 4 can be easily replaced by removing the holder 1 1 6 from the tubular body 1 1 1 as shown in Fig. 10. Becomes easier. Further, since the protruding end of the coil 114 is formed to be widened, the insertion of the welding wire 115 into the coil 114 is easy. INDUSTRIAL APPLICABILITY The present invention is a tip for a welding torch which is excellent in power supply, allows a welding wire to pass easily and causes little wear, and is applicable to a general arc welding machine. It can be used to enhance the performance of.

Claims

請 求 の 範 西 Scope of Claim West
1 . アーク溶接機の溶接トーチに用いられて溶接ワイヤに給電するチップにおい て、 溶接ヮィャが挿通するチップ内側通路がフレキシブルなコィルで形成されて いることを特徴とする溶接トーチ用チップ。 1. A tip for a welding torch, which is used for a welding torch of an arc welding machine and supplies power to a welding wire, wherein a tip inner passage through which the welding wire is inserted is formed by a flexible coil.
2 . 前記チップの内側通路は、 重合した複数のコイルで形成された請求項 1に記 載の溶接トーチ用チップ。  2. The tip for a welding torch according to claim 1, wherein the inner passage of the tip is formed by a plurality of superposed coils.
3 . アーク溶接機の溶接トーチに用いられて溶接ワイヤに給電するチップにおい て、 所定の径の貫通孔を有する筒状体と、 前記貫通孔内に嵌入されて前記溶接ヮ ィャを通過させるコイルとを備えたことを特徴とする溶接トーチ用チップ。 3. In a tip used for a welding torch of an arc welding machine for supplying power to a welding wire, a tubular body having a through hole having a predetermined diameter, and being inserted into the through hole and passing through the welding wire. A tip for a welding torch, comprising a coil.
4 . 前記コイルは前記貫通孔内に出し入れ自在に嵌入され、 前記筒状体には前記 コイルの抜け止め手段を設けた請求項 3に記載の溶接トーチ用チップ。 4. The tip for a welding torch according to claim 3, wherein the coil is fitted into the through-hole so as to be able to be taken in and out freely, and the tubular body is provided with a retaining means for the coil.
5 . 前記貫通孔は前記コイルを螺入するネジ孔である請求項 4に記載の溶接トー チ用チップ。  5. The welding torch tip according to claim 4, wherein the through hole is a screw hole into which the coil is screwed.
6 . 前記コイルが前記貫迎孔の前記溶接ワイヤの挿入側端部から突出している請 求 ¾ 3から 5のいずれかに記載の溶接卜一チ用チップ。  6. The welding tip according to any one of claims 3 to 5, wherein the coil protrudes from an end of the through hole on the insertion side of the welding wire.
7 . 前記コィルが前記貫通孔の前記溶接ヮィャの揷入側端部から突出し、 前記コ ィルの突出端は大径に形成され、 このコイルの突出端に当接するホルダが筒状体 の溶接ワイヤの挿入側端部に着脱自在に取り付けられている請求項 6に記載の溶 接卜一チ用チップ。  7. The coil protrudes from the insertion side end of the welding wire of the through-hole, the protruding end of the coil is formed to have a large diameter, and the holder abutting on the protruding end of the coil is used to weld the cylindrical body. 7. The welding tip according to claim 6, which is detachably attached to an end of the wire on the insertion side.
8 . 前記コイルがタングステン合金又は銅合金である請求項 1から 7のいずれか に記載の溶接卜一チ用チップ。  8. The welding tip according to any one of claims 1 to 7, wherein the coil is made of a tungsten alloy or a copper alloy.
9 . 溶接部にシ一ルドガスを噴射するノズルと、 前記ノズル内に設置されて溶接 ワイヤを溶接部位に誘導するとともに、 前記溶接ワイヤに給電するチップとを備 えたアーク溶接機の溶接トーチにおいて、  9. In a welding torch of an arc welding machine having a nozzle for injecting a shield gas into a welding portion, and a tip installed in the nozzle for guiding a welding wire to a welding site and supplying power to the welding wire,
前記チップが請求項 1から 8のいずれかに記載の溶接トーチ用チップであるこ とを特徴とするアーク溶接機の溶接トーチ。  9. A welding torch for an arc welding machine, wherein the tip is the tip for a welding torch according to any one of claims 1 to 8.
PCT/JP1998/001243 1997-03-21 1998-03-23 Welding torch tip and welding torch WO1998042472A1 (en)

Applications Claiming Priority (2)

Application Number Priority Date Filing Date Title
JP6805597 1997-03-21
JP9/68055 1997-03-21

Publications (1)

Publication Number Publication Date
WO1998042472A1 true WO1998042472A1 (en) 1998-10-01

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Citations (4)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
JPS4414670Y1 (en) * 1964-11-10 1969-06-23
JPS5224958A (en) * 1975-08-20 1977-02-24 Chemetron Corp Electric welding torch
JPS5564980A (en) * 1978-11-10 1980-05-16 Daihen Corp Welding torch
JPS61235081A (en) * 1985-02-15 1986-10-20 エサブ　アクテイ−ボラ−グ Contact chip

Patent Citations (4)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
JPS4414670Y1 (en) * 1964-11-10 1969-06-23
JPS5224958A (en) * 1975-08-20 1977-02-24 Chemetron Corp Electric welding torch
JPS5564980A (en) * 1978-11-10 1980-05-16 Daihen Corp Welding torch
JPS61235081A (en) * 1985-02-15 1986-10-20 エサブ　アクテイ−ボラ−グ Contact chip

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