WO2023286490A1 - Tool for removing electrode for spot welding - Google Patents
Tool for removing electrode for spot welding Download PDFInfo
- Publication number
- WO2023286490A1 WO2023286490A1 PCT/JP2022/022710 JP2022022710W WO2023286490A1 WO 2023286490 A1 WO2023286490 A1 WO 2023286490A1 JP 2022022710 W JP2022022710 W JP 2022022710W WO 2023286490 A1 WO2023286490 A1 WO 2023286490A1
- Authority
- WO
- WIPO (PCT)
- Prior art keywords
- electrode
- tip
- lever member
- tool
- spot welding
- Prior art date
Links
- 238000003466 welding Methods 0.000 title claims description 48
- 230000002093 peripheral effect Effects 0.000 claims description 10
- 238000013459 approach Methods 0.000 claims description 9
- 210000003813 thumb Anatomy 0.000 description 9
- RYGMFSIKBFXOCR-UHFFFAOYSA-N Copper Chemical compound [Cu] RYGMFSIKBFXOCR-UHFFFAOYSA-N 0.000 description 2
- 229910052802 copper Inorganic materials 0.000 description 2
- 239000010949 copper Substances 0.000 description 2
- 238000010586 diagram Methods 0.000 description 2
- 210000004247 hand Anatomy 0.000 description 1
Images
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
- B23K11/00—Resistance welding; Severing by resistance heating
- B23K11/10—Spot welding; Stitch welding
- B23K11/11—Spot welding
-
- 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
- B23K11/00—Resistance welding; Severing by resistance heating
- B23K11/36—Auxiliary equipment
-
- B—PERFORMING OPERATIONS; TRANSPORTING
- B25—HAND TOOLS; PORTABLE POWER-DRIVEN TOOLS; MANIPULATORS
- B25B—TOOLS OR BENCH DEVICES NOT OTHERWISE PROVIDED FOR, FOR FASTENING, CONNECTING, DISENGAGING OR HOLDING
- B25B7/00—Pliers; Other hand-held gripping tools with jaws on pivoted limbs; Details applicable generally to pivoted-limb hand tools
- B25B7/02—Jaws
Abstract
In the present invention, a first guide surface part (7) is formed on the distal end of a tool body (2), and a second guide surface part (13) is formed on the distal end of a lever member (3). When the distal end of the tool body (2) and the distal end of the lever member (3) abut against the outer circumferential surface of an electrode (10) mounted on a shank distal end (G1) so that the center axis (C1) of the electrode (10) is positioned therebetween, and the tool body (2) is pushed toward the electrode (10), the first guide surface part (7) and the second guide surface part (13) swing, against resistance of the biasing force of a twist spring (15), the lever member (3) in a direction in which a second gripping part (12) separates from a first gripping part (6), thereby guiding the electrode (10) to a position between the first gripping part (6) and the second gripping part (12).
Description
本発明は、スポット溶接に用いる溶接ガンのシャンク先端に取り付けられた電極を溶接ガンの先端から取り外すスポット溶接用電極取外工具に関する。
The present invention relates to a spot welding electrode removal tool for removing an electrode attached to the shank tip of a welding gun used for spot welding from the tip of the welding gun.
従来より、スポット溶接に用いる溶接ガンのシャンク先端には、銅製の電極が着脱可能に取り付けられ、該電極の先端部分は、溶接を所定回数行うと磨耗したり、或いは、酸化皮膜等が付着して状態が悪化するので、チップドレッサを用いて周期的に切削する必要がある。そして、周期的に切削される電極は、次第にその全長が短くなって最後は使用できなくなってしまうので、所定の時期に溶接ガンのシャンク先端から取り外すとともに新しい電極を溶接ガンのシャンク先端に取り付けなければならない。
Conventionally, a copper electrode is detachably attached to the tip of the shank of a welding gun used for spot welding, and the tip of the electrode is worn away after welding is performed a predetermined number of times, or an oxide film or the like adheres to the tip. Since the condition deteriorates over time, it is necessary to cut periodically using a tip dresser. Since the electrode that is periodically cut gradually becomes shorter in length and eventually becomes unusable, it is necessary to remove it from the tip of the shank of the welding gun and attach a new electrode to the tip of the shank of the welding gun at a predetermined time. must.
ところで、溶接ガンのシャンク先端から電極を取り外す際、作業者は、例えば、特許文献１の如き工具を用いて取外作業を行う。該特許文献１の工具は、先端に第１挟持部を有する一方、基端側に作業者が把持する柄部を有する略角棒状をなす工具本体と、平面視で鉤状なし且つ第１挟持部に向かって開口する凹状の第２挟持部を有するレバー部材とを備え、該レバー部材は、第２挟持部が第１挟持部に対して接近離間するよう工具本体の先端寄りの位置に回動可能に軸支されている。工具本体とレバー部材との間には、第２挟持部を第１挟持部に対して接近する方向に付勢するバネが取り付けられている。そして、特許文献１の工具を用いて溶接ガンのシャンク先端から電極を取り外す場合、シャンク先端に取り付けられた電極をバネの付勢力を利用して第１挟持部と第２挟持部とで挟持させるとともに電極の中心線周りに工具本体を回動させることにより、シャンク先端から電極が取り外される。
By the way, when removing the electrode from the tip of the shank of the welding gun, the operator uses a tool such as that disclosed in Patent Document 1, for example, to perform the removal work. The tool of Patent Document 1 includes a tool body having a substantially square bar shape having a first gripping portion at the tip and a handle portion gripped by a worker at the base end side, and a first gripping portion having no hook shape in plan view. a lever member having a concave second gripping portion that opens toward the part, the lever member being rotated to a position near the tip of the tool body so that the second gripping portion approaches and separates from the first gripping portion. It is movably pivoted. A spring is attached between the tool body and the lever member to urge the second gripping portion in a direction to approach the first gripping portion. When removing the electrode from the tip of the shank of the welding gun using the tool of Patent Document 1, the electrode attached to the tip of the shank is sandwiched between the first gripping portion and the second gripping portion using the biasing force of the spring. The electrode is removed from the tip of the shank by simultaneously rotating the tool body about the center line of the electrode.
しかし、特許文献１の工具は、電極を第１挟持部と第２挟持部とで挟持する際、一方の手で柄部を把持する一方、他方の手でレバー部材をバネの付勢力に抗して回動させた状態で工具本体の一端側とレバー部材とをシャンク先端に取り付けられた電極に接近させる必要があり、もし仮に、溶接ガンが溶接作業直後であってシャンク先端から取り外す電極が高温状態である場合において電極の交換作業を行う場合、作業者の手が電極に触れてしまって火傷を起こしてしまうおそれがある。また、工具で電極を挟持するために工具本体に対してレバー部材を離間させる作業を作業者は両手で行う必要があるので、電極取外作業が煩雑であるという問題もあった。
However, in the tool disclosed in Patent Document 1, when the electrode is sandwiched between the first gripping portion and the second gripping portion, one hand grips the handle while the other hand holds the lever member against the biasing force of the spring. It is necessary to bring the one end of the tool body and the lever member close to the electrode attached to the tip of the shank while rotating the tool body. When replacing the electrode in a high temperature state, the operator's hand may touch the electrode and get burned. Moreover, since the operator has to use both hands to move the lever member away from the tool body in order to clamp the electrode with the tool, there is also the problem that the electrode removal work is complicated.
本発明は、斯かる点に鑑みてなされたものであり、その目的とするところは、作業者が溶接ガンのシャンク先端から電極を簡単に且つ安全に取り外すことができるスポット溶接用電極取外工具を提供することにある。
SUMMARY OF THE INVENTION The present invention has been made in view of the above points, and an object of the present invention is to provide a spot welding electrode removal tool that enables a worker to easily and safely remove an electrode from the shank tip of a welding gun. is to provide
上記の目的を達成するために、本発明は、作業者が溶接ガンのシャンク先端に取り付けられた電極に向けて工具を押し込む動作を行うだけで当該工具が電極を挟持するように工夫を凝らしたことを特徴とする。
In order to achieve the above object, the present invention is devised so that the tool clamps the electrode only by the operator pushing the tool toward the electrode attached to the tip of the shank of the welding gun. It is characterized by
具体的には、スポット溶接用ガンのシャンク先端に装着された電極を挟持して当該電極の中心線周りに回転させることにより前記シャンク先端から取り外すスポット溶接用電極取外工具を対象とし、次のような対策を講じた。
Specifically, the object is a spot welding electrode removal tool that removes an electrode attached to the tip of a shank of a spot welding gun from the tip of the shank by holding the electrode and rotating it around the center line of the electrode. took such measures.
すなわち、第１の発明では、先端側に第１挟持部を有する一方、基端側に作業者が把持する柄部を有する工具本体と、先端側に第２挟持部を有し、当該第２挟持部が前記第１挟持部に対して接近離間するよう前記工具本体に揺動可能に軸支されたレバー部材と、前記第２挟持部が前記第１挟持部に接近する方向に前記レバー部材を付勢する付勢部材とを備え、前記工具本体の先端及び前記レバー部材の先端の少なくとも一方には、当該工具本体の先端と前記レバー部材の先端とを前記シャンク先端に装着された前記電極の外周面に前記中心線が間に位置するように当接させて前記電極側に押し込んだ際、前記第２挟持部が前記第１挟持部から離間する方向に前記レバー部材を前記付勢部材の付勢力に抗して揺動させて前記第１挟持部と前記第２挟持部との間に前記電極を案内するガイド面部が設けられていることを特徴とする。
That is, in the first invention, the tool main body has the first clamping portion on the distal end side and the handle portion to be gripped by the operator on the proximal end side, and the second clamping portion is provided on the distal end side. a lever member swingably pivotally supported by the tool body so that the holding portion moves toward and away from the first holding portion; and the lever member moves in a direction in which the second holding portion approaches the first holding portion. At least one of the tip of the tool body and the tip of the lever member is provided with the electrode attached to the tip of the shank with the tip of the tool body and the tip of the lever member When the lever member is pushed toward the electrode side with the center line positioned therebetween, the lever member is moved in the direction in which the second holding portion separates from the first holding portion. and a guide surface portion that guides the electrode between the first holding portion and the second holding portion by swinging against the urging force of the second holding portion.
第２の発明では、第１の発明において、前記ガイド面部は、前記工具本体と前記レバー部材との両方に設けられ、前記両ガイド面部は、前記第１挟持部と前記第２挟持部とが接近した状態において前記工具本体の先端と前記レバー部材の先端とに近づくにつれて次第に離間する形状をなしていることを特徴とする。
In a second invention, in the first invention, the guide surface portions are provided on both the tool body and the lever member, and the guide surface portions are provided between the first holding portion and the second holding portion. It is characterized in that the tool body and the tip of the lever member are gradually separated from each other as they approach each other in a close state.
第３の発明では、第１又は第２の発明において、前記レバー部材の基端側には、前記柄部に接近する位置に配置され、且つ、前記付勢部材の付勢力に抗して前記柄部側に押すと、前記レバー部材を揺動させて前記第１挟持部から前記第２挟持部を離間させる押圧操作部が設けられていることを特徴とする。
In a third invention, in the first or second invention, the base end side of the lever member is arranged at a position approaching the handle, and the lever member resists the biasing force of the biasing member. A pressing operation portion is provided that, when pushed toward the handle portion, swings the lever member to separate the second holding portion from the first holding portion.
第４の発明では、第３の発明において、前記押圧操作部は、前記レバー部材のその他の領域よりも揺動軸心に沿う方向に幅広な形状をなしていることを特徴とする。
A fourth invention is characterized in that, in the third invention, the pressing operation portion has a shape wider in a direction along the swing axis than other regions of the lever member.
第１の発明では、作業者が工具本体の柄部を一方の手で把持するとともに、工具本体の先端とレバー部材の先端とをシャンク先端に装着された電極の外周面にその中心線が間に位置するように当接させ、その状態において工具本体を電極側に押し込む。すると、電極の外周面がガイド面部に摺接しながら移動することにより、第２挟持部が付勢部材の付勢力に抗して第１挟持部から次第に離間していき、その後、当該第１挟持部と第２挟持部とで電極が挟持されるようになる。そして、作業者は、一方の手で工具本体を電極の中心線周りに回動させると、シャンク先端に対して電極が捩じられるので、当該電極がシャンク先端から取り外される。このように、作業者による片手だけの操作で電極がシャンク先端から取り外されるようになり、電極のシャンク先端からの取外操作を簡単に行うことができる。また、作業者は、電極の取外作業時において、第１挟持部及び第２挟持部から離れた位置の柄部を把持して電極を取り外すための全ての操作を行うことができるので、高温状態の電極に作業者の手が接触するといったことを回避することができ、電極の取外作業を安全に行うことができる。
In the first invention, the operator grips the handle of the tool body with one hand, and the center line of the tip of the tool body and the tip of the lever member are positioned between the outer peripheral surface of the electrode attached to the tip of the shank. , and in that state, push the tool body toward the electrode. Then, the outer peripheral surface of the electrode moves while being in sliding contact with the guide surface portion, so that the second clamping portion gradually separates from the first clamping portion against the biasing force of the biasing member. The electrode is sandwiched between the portion and the second sandwiching portion. Then, when the operator rotates the tool body around the center line of the electrode with one hand, the electrode is twisted with respect to the tip of the shank, so that the electrode is removed from the tip of the shank. In this manner, the electrode can be removed from the tip of the shank by an operator using only one hand, and the electrode can be easily removed from the tip of the shank. In addition, when removing the electrode, the operator can grasp the handle part away from the first holding part and the second holding part and perform all the operations for removing the electrode. A worker's hand can be prevented from coming into contact with the electrode in this state, and the electrode removal work can be performed safely.
第２の発明では、工具本体の先端とレバー部材の先端とをシャンク先端に装着された電極の外周面に当接させた際、各ガイド面部が電極の外周面に接触し易くなるので、電極に対して工具本体とレバー部材とが位置ずれを起こし難くなって工具本体を押し込む際の動作が安定するようになり、電極の取外操作をスムーズに行うことができる。
In the second invention, when the tip of the tool body and the tip of the lever member are brought into contact with the outer peripheral surface of the electrode attached to the tip of the shank, each guide surface easily comes into contact with the outer peripheral surface of the electrode. As a result, the tool body and the lever member are less likely to be displaced from each other, and the operation of pushing the tool body in is stabilized, so that the electrode can be removed smoothly.
第３の発明では、シャンク先端から電極を取り外した際、当該電極は付勢部材の付勢力によって第１挟持部と第２挟持部とに挟持された状態で保持されるようになる。その後、作業者は、柄部を把持する手の親指で押圧操作部を柄部側に押圧すると、シャンク先端から取り外した電極を工具本体から落下させることができるようになる。このように、作業者は、シャンク先端から電極を取り外して廃棄するまで当該電極に全く触れる必要がなくなるので、電極をシャンク先端から安全に取り外すことができる。
In the third invention, when the electrode is removed from the tip of the shank, the electrode is held in a state of being sandwiched between the first sandwiching portion and the second sandwiching portion by the biasing force of the biasing member. After that, the operator presses the pressing operation part toward the handle with the thumb of the hand that holds the handle, so that the electrode removed from the tip of the shank can be dropped from the tool body. In this way, the operator can safely remove the electrode from the shank tip because the operator never has to touch the electrode until it is removed from the shank tip and discarded.
第４の発明では、作業者が押圧操作部を親指で押圧する際、作業者に加わる負荷が親指の広範囲に分散するようになる。したがって、押圧操作時において親指に加わる不快感を減らすことができるようになり、操作感の良い工具にすることができる。
In the fourth invention, when the operator presses the pressing operation part with the thumb, the load applied to the operator is distributed over a wide range of the thumb. Therefore, it is possible to reduce the discomfort felt to the thumb during the pressing operation, and the tool can be operated with a good feeling.
以下、本発明の実施形態を図面に基づいて詳細に説明する。尚、以下の好ましい実施形態の説明は、本質的に例示に過ぎない。
Hereinafter, embodiments of the present invention will be described in detail based on the drawings. It should be noted that the following description of preferred embodiments is merely exemplary in nature.
図１乃至図３は、本発明の実施形態に係るスポット溶接用電極取外工具１を示す。該スポット溶接用電極取外工具１は、図４乃至図７に示すように、スポット溶接用の溶接ガンＧのシャンク先端Ｇ１から釣鐘状をなす銅製の電極１０を取り外して廃棄する際に使用するものであり、略帯板状をなす工具本体２と、該工具本体２の先端側に並設されたレバー部材３とを備え、該レバー部材３の長さ寸法は、工具本体２の長さ寸法の略半分となっている。
1 to 3 show a spot welding electrode removal tool 1 according to an embodiment of the present invention. As shown in FIGS. 4 to 7, the spot welding electrode removal tool 1 is used to remove and discard a bell-shaped copper electrode 10 from a shank tip G1 of a welding gun G for spot welding. It comprises a tool body 2 having a substantially strip-like shape and a lever member 3 arranged side by side on the tip side of the tool body 2. The length dimension of the lever member 3 is the length of the tool body 2. It is approximately half the size.
溶接ガンＧは、産業用ロボット（図示せず）に把持させて使用する一般的なものであり、溶接ガンＧのシャンク先端には、電極１０が着脱可能に嵌合している。
The welding gun G is a general one that is gripped by an industrial robot (not shown) for use, and an electrode 10 is detachably fitted to the tip of the shank of the welding gun G.
工具本体２は、図１及び図２に示すように、先端側に第１顎部４を有する一方、基端側に作業者が把持可能な柄部５を備えている。
As shown in FIGS. 1 and 2, the tool body 2 has a first jaw 4 on the distal end side and a handle 5 that can be gripped by the operator on the proximal end side.
第１顎部４は、工具本体２の幅方向一側で、且つ、柄部５から離れる方向において当該柄部５の延長方向に対して若干傾斜しながら延びており、先端に行くにつれて次第に厚みが薄くなる形状をなしている。
The first jaw portion 4 extends on one side in the width direction of the tool body 2 and in a direction away from the handle portion 5 while being slightly inclined with respect to the extension direction of the handle portion 5, and the thickness gradually increases toward the tip. has a thin shape.
第１顎部４における工具本体２の幅方向他側には、平面視で凹状なす第１挟持部６と矩形状の平坦面である第１ガイド面部７とが柄部５側から順に設けられている。
On the other side of the tool body 2 in the width direction of the first jaw 4, a first clamping portion 6 having a concave shape in plan view and a first guide surface portion 7 having a rectangular flat surface are provided in this order from the handle portion 5 side. ing.
第１挟持部６には、工具本体２の厚み方向に延びる突条をなす複数の第１挟み歯６ａが柄部５側の領域に形成されている。
In the first holding portion 6, a plurality of first holding teeth 6a forming a ridge extending in the thickness direction of the tool body 2 are formed in a region on the handle portion 5 side.
第１ガイド面部７は、工具本体２の幅方向一側で、且つ、柄部５から離れる方向において第１顎部４の延長方向に対して若干傾斜しながら延びている。
The first guide surface portion 7 extends on one side in the width direction of the tool body 2 and slightly inclined with respect to the extending direction of the first jaw portion 4 in the direction away from the handle portion 5 .
柄部５は、基端に行くにつれて次第に幅方向に広くなる形状で、且つ、厚みが外周部分よりも内側部分の方が薄い段差形状をなしており、基端部分には、厚み方向に貫通する長孔５ａが形成されている。
The handle portion 5 has a shape that gradually widens in the width direction toward the base end, and has a stepped shape in which the thickness of the inner portion is thinner than that of the outer peripheral portion. An elongated hole 5a is formed.
レバー部材３は、先端側に第２顎部８を有する一方、基端側に作業者がレバー操作可能なレバー操作部９を備え、レバー部材３の中途部には、当該レバー部材３の幅方向一側に突出する平面視で略三角形状をなす突出板部１１がレバー部材３の厚み方向に所定の間隔をあけて一対設けられている。
The lever member 3 has a second jaw portion 8 on the distal end side, and a lever operating portion 9 that can be operated by an operator on the proximal end side. A pair of protruding plate portions 11 protruding in one direction and having a substantially triangular shape in a plan view are provided at predetermined intervals in the thickness direction of the lever member 3 .
両突出板部１１は、工具本体２の中途部を挟み込むように位置しており、当該工具本体２に揺動軸Ｓ１周りに揺動可能に軸支されている。
Both protruding plate portions 11 are positioned so as to sandwich the middle portion of the tool body 2, and are pivotally supported by the tool body 2 so as to be able to swing about the swing axis S1.
レバー操作部９の基端部分は、柄部５に接近する位置になっており、その端部には、作業者が押圧操作可能な押圧操作部１４が設けられている。
A base end portion of the lever operation portion 9 is positioned close to the handle portion 5, and a pressing operation portion 14 that can be pressed by the operator is provided at the end portion thereof.
該押圧操作部１４は、レバー部材３のその他の領域よりも揺動軸心に沿う方向に幅広な形状をなしており、揺動軸心と直交する方向から見て楕円形状をなしている。
The pressing operation portion 14 has a shape wider in the direction along the swing axis than other areas of the lever member 3, and has an elliptical shape when viewed from a direction perpendicular to the swing axis.
揺動軸Ｓ１には、第２顎部８が第１顎部４に接近する方向にレバー部材３を付勢する捩じりバネ１５（付勢部材）が巻装され、作業者が捩じりバネ１５の付勢力に抗して押圧操作部１４を柄部５側に押すと、レバー部材３が揺動して第２顎部８が第１顎部４から離間するようになっている。
A torsion spring 15 (biasing member) that biases the lever member 3 in a direction in which the second jaw 8 approaches the first jaw 4 is wound around the swing shaft S1. When the pressing operation portion 14 is pushed toward the handle portion 5 against the biasing force of the spring 15, the lever member 3 swings and the second jaw portion 8 is separated from the first jaw portion 4. .
第２顎部８は、平面視で緩やかに湾曲する鉤状をなしている。該第２顎部８におけるレバー部材３の幅方向一側には、平面視で凹状なす第２挟持部１２と矩形状の平坦面である第２ガイド面部１３とが突出板部１１側から順に設けられている。
The second jaw 8 has a hook shape that gently curves in a plan view. On one side of the lever member 3 in the width direction of the second jaw 8, a second clamping portion 12 having a concave shape in plan view and a second guide surface portion 13 having a rectangular flat surface are arranged in order from the projecting plate portion 11 side. is provided.
第２挟持部１２は、第１挟持部６に対向した位置になっており、レバー部材３を揺動軸Ｓ１周りに揺動させると、第１挟持部６に対して接近離間するようになっている。
The second gripping portion 12 is positioned facing the first gripping portion 6, and moves toward and away from the first gripping portion 6 when the lever member 3 is swung around the swing shaft S1. ing.
第２挟持部１２には、レバー部材３の厚み方向に延びる突条をなす第２挟み歯１２ａ及び第３挟み歯１２ｂが第２ガイド面部１３側の領域と突出板部１１側の領域とにそれぞれ形成されている。
In the second clamping portion 12, a second pinching tooth 12a and a third pinching tooth 12b forming a ridge extending in the thickness direction of the lever member 3 are provided in the region on the second guide surface portion 13 side and the projecting plate portion 11 side. formed respectively.
第２ガイド面部１３は、レバー部材３の幅方向他側で、且つ、レバー操作部９から離れる方向において第２顎部８の延長方向に対して若干傾斜しながら延びている。
The second guide surface portion 13 extends on the other side in the width direction of the lever member 3 and slightly inclined with respect to the extension direction of the second jaw portion 8 in the direction away from the lever operating portion 9 .
すなわち、第２ガイド面部１３は、第１ガイド面部７に対応した位置になっており、第１ガイド面部７及び第２ガイド面部１３は、レバー部材３を揺動させて第１挟持部６と第２挟持部１２とが接近した状態において工具本体２の先端とレバー部材３の先端とにそれぞれ近づくにつれて次第に離間する形状になっている。
That is, the second guide surface portion 13 is located at a position corresponding to the first guide surface portion 7 , and the first guide surface portion 7 and the second guide surface portion 13 swing the lever member 3 so as to move with the first clamping portion 6 . When the second clamping portion 12 is close to the tip of the tool body 2 and the tip of the lever member 3, they gradually separate from each other.
そして、第１ガイド面部７及び第２ガイド面部１３は、図４乃至図７に示すように、工具本体２の先端とレバー部材３の先端とをシャンク先端Ｇ１に装着された電極１０の外周面に当該電極１０の中心線Ｃ１が間に位置するように当接させて電極１０側に押し込んだ際、第２挟持部１２が第１挟持部６から離間する方向にレバー部材３を捩じりバネ１５の付勢力に抗して揺動させて第１挟持部６と第２挟持部１２との間に電極１０を案内するようになっている。
As shown in FIGS. 4 to 7, the first guide surface portion 7 and the second guide surface portion 13 connect the tip of the tool body 2 and the tip of the lever member 3 to the outer peripheral surface of the electrode 10 attached to the tip G1 of the shank. , the lever member 3 is twisted in the direction in which the second holding portion 12 separates from the first holding portion 6. The electrode 10 is guided between the first clamping portion 6 and the second clamping portion 12 by swinging against the biasing force of the spring 15 .
第１ガイド面部７及び第２ガイド面部１３に案内されて第１挟持部６と第２挟持部１２との間に案内された電極１０は、捩じりバネ１５の付勢力によって第１挟持部６と第２挟持部１２とで挟持され、この状態で工具本体２を中心線Ｃ１周りに回動させることによりシャンク先端Ｇ１から電極１０が取り外されるようになっている。
The electrode 10 guided by the first guide surface portion 7 and the second guide surface portion 13 and guided between the first clamping portion 6 and the second clamping portion 12 is moved to the first clamping portion by the biasing force of the torsion spring 15 . 6 and the second holding portion 12, and by rotating the tool body 2 around the center line C1 in this state, the electrode 10 is removed from the shank tip G1.
次に、本発明の実施形態に係るスポット溶接用電極取外工具１を用いた電極１０のシャンク先端Ｇ１からの取外作業について詳述する。
Next, the operation of removing the electrode 10 from the shank tip G1 using the spot welding electrode removing tool 1 according to the embodiment of the present invention will be described in detail.
まず、作業者は、スポット溶接用電極取外工具１の工具本体２における柄部５を一方の手で把持した後、図４及び図５に示すように、工具本体２の先端とレバー部材３の先端とをシャンク先端Ｇ１に装着された電極１０の外周面にその中心線Ｃ１が間に位置するように当接させる。このとき、第１ガイド面部７及び第２ガイド面部１３は、工具本体２の先端とレバー部材３の先端とにそれぞれ近づくにつれて次第に離間する形状になっており、電極１０の外周面に接触し易くなっている。したがって、電極１０に対して工具本体２とレバー部材３とが位置ずれを起こし難くなっている。
First, an operator grips the handle 5 of the tool body 2 of the spot welding electrode removal tool 1 with one hand, and then, as shown in FIGS. are brought into contact with the outer peripheral surface of the electrode 10 attached to the shank tip G1 so that the center line C1 is positioned therebetween. At this time, the first guide surface portion 7 and the second guide surface portion 13 are shaped such that they gradually separate as they approach the tip of the tool body 2 and the tip of the lever member 3, respectively, and easily come into contact with the outer peripheral surface of the electrode 10. It's becoming Therefore, it is difficult for the tool body 2 and the lever member 3 to be misaligned with respect to the electrode 10 .
次に、作業者は、把持する工具本体２を電極１０側に押し込む（矢印Ｘ１参照）。すると、電極１０の外周面が第１ガイド面部７と第２ガイド面部１３とにそれぞれ摺接しながら移動することにより、図６に示すように、第２挟持部１２が捩じりバネ１５の付勢力に抗して第１挟持部６から次第に離間していき（矢印Ｘ２参照）、その後、第１挟持部６と第２挟持部１２とで電極１０が挟持される。このとき、第１ガイド面部７及び第２ガイド面部１３によって電極１０に対して工具本体２とレバー部材３とが位置ずれを起こし難くなっているので、工具本体２を押し込む際の動作が安定する。
Next, the operator pushes the gripped tool body 2 toward the electrode 10 (see arrow X1). Then, the outer peripheral surface of the electrode 10 moves while being in sliding contact with the first guide surface portion 7 and the second guide surface portion 13, respectively, so that the second clamping portion 12 is attached to the torsion spring 15 as shown in FIG. The electrode 10 is gradually separated from the first holding portion 6 against the force (see arrow X2), and then the electrode 10 is held between the first holding portion 6 and the second holding portion 12 . At this time, the first guide surface portion 7 and the second guide surface portion 13 prevent the tool body 2 and the lever member 3 from being displaced from each other with respect to the electrode 10, so that the operation of pushing the tool body 2 is stabilized. .
しかる後、作業者は、図７に示すように、一方の手で工具本体２を電極１０の中心線Ｃ１周りに回動させる（矢印Ｘ３方向）。すると、シャンク先端Ｇ１に対して電極１０が捩じられるので、当該電極１０がシャンク先端から取り外される。シャンク先端Ｇ１から取り外した電極１０は、捩じりバネ１５の付勢力によって第１挟持部６と第２挟持部１２とに挟持された状態で保持される。
After that, as shown in FIG. 7, the operator rotates the tool body 2 around the center line C1 of the electrode 10 with one hand (arrow X3 direction). Then, since the electrode 10 is twisted with respect to the shank tip G1, the electrode 10 is removed from the shank tip. The electrode 10 removed from the shank tip G1 is held in a state of being sandwiched between the first sandwiching portion 6 and the second sandwiching portion 12 by the biasing force of the torsion spring 15 .
その後、作業者は、図８に示すように、柄部５を把持する手の親指で押圧操作部１４を柄部５側に押圧する（矢印Ｘ４参照）。すると、作業者は、シャンク先端Ｇ１から取り外した電極１０に触れることなく当該電極１０を工具本体２から落下させることができる。このように、作業者は、シャンク先端Ｇ１から電極１０を取り外して廃棄するまで当該電極１０に全く触れる必要がなくなるので、電極１０をシャンク先端Ｇ１から安全に取り外すことができる。
After that, as shown in FIG. 8, the operator presses the pressing operation part 14 toward the handle 5 with the thumb of the hand that holds the handle 5 (see arrow X4). Then, the operator can drop the electrode 10 from the tool main body 2 without touching the electrode 10 removed from the shank tip G1. Thus, the operator does not have to touch the electrode 10 at all until it is removed from the shank tip G1 and discarded, so that the electrode 10 can be safely removed from the shank tip G1.
尚、押圧操作部１４は、レバー部材３のその他の領域よりも揺動軸心に沿う方向に幅広な形状をなしているので、作業者が押圧操作部１４を親指で押圧する際、作業者に加わる負荷が親指の広範囲に分散するようになる。したがって、押圧操作時において親指に加わる不快感を減らすことができるようになり、操作感の良いスポット溶接用電極取外工具１にできる。
In addition, since the pressing operation portion 14 has a shape wider in the direction along the swing axis than other areas of the lever member 3, when the operator presses the pressing operation portion 14 with the thumb, the operator can The load applied to the thumb is distributed over a wide area of the thumb. Therefore, it is possible to reduce the discomfort felt to the thumb during the pressing operation, and the spot welding electrode removing tool 1 can be provided with a good operational feeling.
以上より、本発明の実施形態によると、作業者による片手だけの操作で電極１０がシャンク先端Ｇ１から取り外されるようになり、電極１０のシャンク先端Ｇ１からの取外操作を簡単に行うことができる。また、作業者は、電極１０の取外作業時において、第１挟持部６及び第２挟持部１２から離れた位置の柄部５を把持して電極１０を取り外すための全ての操作を行うことができるので、高温状態の電極１０に作業者の手が接触するといったことを回避することができ、電極１０の取外作業を安全に行うことができる。
As described above, according to the embodiment of the present invention, the electrode 10 can be removed from the shank distal end G1 by an operator's operation with only one hand, and the electrode 10 can be easily removed from the shank distal end G1. . In addition, when removing the electrode 10, the operator must hold the handle 5 at a position away from the first clamping part 6 and the second clamping part 12 and perform all the operations for removing the electrode 10. Therefore, it is possible to avoid the contact of the operator's hand with the electrode 10 in a high temperature state, and the work of removing the electrode 10 can be performed safely.
尚、本発明の実施形態では、工具本体２に第１ガイド面部７が設けられ、レバー部材３に第２ガイド面部１３が設けられているが、これに限らず、工具本体２及びレバー部材３の少なくとも一方にガイド面部が設けられていればよい。
In the embodiment of the present invention, the tool main body 2 is provided with the first guide surface portion 7, and the lever member 3 is provided with the second guide surface portion 13. It is sufficient that at least one of them is provided with a guide surface portion.
また、本発明の実施形態では、押圧操作部１４が揺動軸心と直交する方向からみて楕円形状をなしているが、これに限らず、作業者が押圧操作をする際に不快にならない形状であればよく、円形状や矩形状であってもよい。
In addition, in the embodiment of the present invention, the pressing operation part 14 has an elliptical shape when viewed from the direction orthogonal to the swing axis, but the shape is not limited to this, and the operator does not feel uncomfortable when performing the pressing operation. It may be circular or rectangular.
さらに、本発明の実施形態では、レバー部材３を付勢する付勢部材として捩じりバネ１５を用いているが、これに限らず、その他の種類のバネであってもよいし、ゴム材等の弾性部材で付勢するようにしてもよい。
Furthermore, in the embodiment of the present invention, the torsion spring 15 is used as an urging member for urging the lever member 3, but the present invention is not limited to this, and other types of springs may be used. You may make it bias|bias by elastic members, such as.
本発明は、例えば、スポット溶接に用いる溶接ガンのシャンク先端に取り付けられた電極を溶接ガンの先端から取り外すスポット溶接用電極取外工具に適している。
The present invention is suitable, for example, as a spot welding electrode removal tool for removing an electrode attached to the shank tip of a welding gun used for spot welding from the tip of the welding gun.
１ スポット溶接用電極取外工具
２ 工具本体
３ レバー部材
５ 柄部
６ 第１挟持部
７ 第１ガイド面部
１０ 電極
１２ 第２挟持部
１３ 第２ガイド面部
１４ 押圧操作部
１５ 捩じりバネ（付勢部材）
Ｃ１ 電極の中心線
Ｇ１ シャンク先端 1 electrode removal tool forspot welding 2 tool main body 3 lever member 5 handle 6 first holding portion 7 first guide surface portion 10 electrode 12 second holding portion 13 second guide surface portion 14 pressing operation portion 15 torsion spring (with force member)
C1 Center line of electrode G1 Shank tip
２ 工具本体
３ レバー部材
５ 柄部
６ 第１挟持部
７ 第１ガイド面部
１０ 電極
１２ 第２挟持部
１３ 第２ガイド面部
１４ 押圧操作部
１５ 捩じりバネ（付勢部材）
Ｃ１ 電極の中心線
Ｇ１ シャンク先端 1 electrode removal tool for
C1 Center line of electrode G1 Shank tip
Claims (4)
- スポット溶接用ガンのシャンク先端に装着された電極を挟持して当該電極の中心線周りに回転させることにより前記シャンク先端から取り外すスポット溶接用電極取外工具であって、
先端側に第１挟持部を有する一方、基端側に作業者が把持する柄部を有する工具本体と、
先端側に第２挟持部を有し、当該第２挟持部が前記第１挟持部に対して接近離間するよう前記工具本体に揺動可能に軸支されたレバー部材と、
前記第２挟持部が前記第１挟持部に接近する方向に前記レバー部材を付勢する付勢部材と、を備え、
前記工具本体の先端及び前記レバー部材の先端の少なくとも一方には、当該工具本体の先端と前記レバー部材の先端とを前記シャンク先端に装着された前記電極の外周面に前記中心線が間に位置するように当接させて前記電極側に押し込んだ際、前記第２挟持部が前記第１挟持部から離間する方向に前記レバー部材を前記付勢部材の付勢力に抗して揺動させて前記第１挟持部と前記第２挟持部との間に前記電極を案内するガイド面部が設けられていることを特徴とするスポット溶接用電極取外工具。 A spot welding electrode removal tool that removes an electrode attached to the tip of a shank of a spot welding gun from the tip of the shank by pinching and rotating the electrode around the center line of the electrode,
a tool body having a first holding portion on the distal end side and a handle portion to be gripped by a worker on the proximal end side;
a lever member having a second gripping portion on the tip end side and pivotably supported by the tool body so that the second gripping portion approaches and separates from the first gripping portion;
a biasing member that biases the lever member in a direction in which the second holding portion approaches the first holding portion;
At least one of the tip of the tool body and the tip of the lever member is positioned between the tip of the tool body and the tip of the lever member and the center line between the outer peripheral surface of the electrode attached to the tip of the shank. When the lever member is pressed against the electrode side so that the second holding portion is separated from the first holding portion, the lever member is swung against the biasing force of the biasing member. An electrode removing tool for spot welding, wherein a guide surface portion for guiding the electrode is provided between the first holding portion and the second holding portion. - 請求項１に記載のスポット溶接用電極取外工具において、
前記ガイド面部は、前記工具本体と前記レバー部材との両方に設けられ、前記両ガイド面部は、前記第１挟持部と前記第２挟持部とが接近した状態において前記工具本体の先端と前記レバー部材の先端とに近づくにつれて次第に離間する形状をなしていることを特徴とするスポット溶接用電極取外工具。 In the spot welding electrode removal tool according to claim 1,
The guide surface portions are provided on both the tool main body and the lever member, and both the guide surface portions are provided on the tip of the tool main body and the lever when the first holding portion and the second holding portion are close to each other. A tool for removing an electrode for spot welding, characterized in that it has a shape that gradually separates as it approaches the tip of a member. - 請求項１又は２に記載のスポット溶接用電極取外工具において、
前記レバー部材の基端側には、前記柄部に接近する位置に配置され、且つ、前記付勢部材の付勢力に抗して前記柄部側に押すと、前記レバー部材を揺動させて前記第１挟持部から前記第２挟持部を離間させる押圧操作部が設けられていることを特徴とするスポット溶接用電極取外工具。 In the spot welding electrode removal tool according to claim 1 or 2,
The base end of the lever member is arranged at a position approaching the handle, and when pushed toward the handle against the biasing force of the biasing member, the lever member is swung. An electrode removing tool for spot welding, comprising a pressing operation part for separating the second holding part from the first holding part. - 請求項３に記載のスポット溶接用電極取外工具において、
前記押圧操作部は、前記レバー部材のその他の領域よりも揺動軸心に沿う方向に幅広な形状をなしていることを特徴とする溶接用電極取外工具。 In the spot welding electrode removal tool according to claim 3,
The welding electrode removal tool, wherein the pressing operation portion has a shape wider in a direction along the swing axis than other regions of the lever member.
Applications Claiming Priority (2)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| JP2021-118020 | 2021-07-16 | ||
| JP2021118020A JP2023013669A (en) | 2021-07-16 | 2021-07-16 | Spot-welding electrode removal tool |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| WO2023286490A1 true WO2023286490A1 (en) | 2023-01-19 |
Family
ID=84920006
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| PCT/JP2022/022710 WO2023286490A1 (en) | 2021-07-16 | 2022-06-06 | Tool for removing electrode for spot welding |
Country Status (2)
| Country | Link |
|---|---|
| JP (1) | JP2023013669A (en) |
| WO (1) | WO2023286490A1 (en) |
Citations (4)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| US4651597A (en) * | 1984-08-13 | 1987-03-24 | Yang Tai Her | Speed wrench equipped with jaw auxiliary operational mechanism |
| JP2001150151A (en) * | 1999-12-01 | 2001-06-05 | Akihiro Saito | Device for pulling-out electrode tip |
| JP2004066252A (en) * | 2002-08-01 | 2004-03-04 | Shinko Kiki Kk | Electrode tip detaching tool for spot welding machine |
| US20080289454A1 (en) * | 2005-03-12 | 2008-11-27 | Tony Petkovic | Wrench |
-
2021
- 2021-07-16 JP JP2021118020A patent/JP2023013669A/en active Pending
-
2022
- 2022-06-06 WO PCT/JP2022/022710 patent/WO2023286490A1/en unknown
Patent Citations (4)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| US4651597A (en) * | 1984-08-13 | 1987-03-24 | Yang Tai Her | Speed wrench equipped with jaw auxiliary operational mechanism |
| JP2001150151A (en) * | 1999-12-01 | 2001-06-05 | Akihiro Saito | Device for pulling-out electrode tip |
| JP2004066252A (en) * | 2002-08-01 | 2004-03-04 | Shinko Kiki Kk | Electrode tip detaching tool for spot welding machine |
| US20080289454A1 (en) * | 2005-03-12 | 2008-11-27 | Tony Petkovic | Wrench |
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| Publication number | Publication date |
|---|---|
| JP2023013669A (en) | 2023-01-26 |
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