JP2015051457A - Electrode for electrical resistance welding - Google Patents

Electrode for electrical resistance welding Download PDF

Info

Publication number
JP2015051457A
JP2015051457A JP2013200543A JP2013200543A JP2015051457A JP 2015051457 A JP2015051457 A JP 2015051457A JP 2013200543 A JP2013200543 A JP 2013200543A JP 2013200543 A JP2013200543 A JP 2013200543A JP 2015051457 A JP2015051457 A JP 2015051457A
Authority
JP
Japan
Prior art keywords
diameter hole
guide
hole
small
diameter
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.)
Granted
Application number
JP2013200543A
Other languages
Japanese (ja)
Other versions
JP5967443B2 (en
Inventor
青山　好高
Yoshitaka Aoyama
好高 青山
青山　省司
Shoji Aoyama
省司 青山
Current Assignee (The listed assignees may be inaccurate. Google has not performed a legal analysis and makes no representation or warranty as to the accuracy of the list.)
Individual
Original Assignee
Individual
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 Individual filed Critical Individual
Priority to JP2013200543A priority Critical patent/JP5967443B2/en
Publication of JP2015051457A publication Critical patent/JP2015051457A/en
Application granted granted Critical
Publication of JP5967443B2 publication Critical patent/JP5967443B2/en
Active legal-status Critical Current
Anticipated expiration legal-status Critical

Links

Images

Landscapes

  • Connection Of Plates (AREA)

Abstract

PROBLEM TO BE SOLVED: To achieve integration of a metal part and a synthetic resin part sufficiently in which a small diameter part formed of metal or the like is inserted into a synthetic resin guide part.SOLUTION: A guide hole 6 in an electrode is formed of a large diameter hole 7 and a small diameter hole 8. A guide pin 12 is formed of a synthetic resin guide part 13 which is a large diameter part, and a small diameter part 14 formed of metal or the like penetrating the small diameter hole 8. An end surface 11 of the guide part 13 and an inner end surface 24 of the large diameter hole 7 contact tightly. The small diameter part 14 of the guide pin 12 is formed of a flange part 17 inserted into an insertion large diameter hole 15 and a shaft part 18 inserted into an insertion small diameter hole 16, the flange part 17 contacts tightly a pressure receiving end surface 19 formed on a boundary between the insertion large diameter hole 15 and the insertion small diameter hole 16, and press force acting on the flange part 17 causes the end surface 11 to be pressed against the inner end surface 24.

Description

この発明は、電極内の断面円形のガイド孔が、少なくとも大径孔と小径孔から構成され、ガイド孔に嵌め込まれるガイドピンが、大径孔内に実質的に隙間がなくて摺動できる状態で嵌まり込んでいる大径部であるガイド部と、小径孔を貫通している小径部から構成された形式の電気抵抗溶接用電極に関している。  In this invention, the guide hole having a circular section in the electrode is composed of at least a large-diameter hole and a small-diameter hole, and the guide pin fitted in the guide hole is slidable with substantially no gap in the large-diameter hole. It relates to an electrode for electric resistance welding of a type constituted by a guide portion which is a large diameter portion fitted in and a small diameter portion which penetrates a small diameter hole.

特許第３７１６３９６号公報には、電極内の断面円形のガイド孔が、少なくとも大径孔と小径孔から構成され、ガイド孔に嵌め込まれるガイドピンが、大径孔内に実質的に隙間がなくて摺動できる状態で嵌まり込んでいる大径部であるガイド部と、小径孔を貫通している小径部から構成された形式の電気抵抗溶接用電極が記載され、さらに、合成樹脂で構成された上記ガイド部に金属製の上記小径部が鋳込まれていること、すなわち鋳型の所定位置に小径部をセットし、そこへ合成樹脂を流し込む手法が採用されていること記載されている。  Japanese Patent No. 3716396 discloses that a guide hole having a circular cross section in an electrode is composed of at least a large diameter hole and a small diameter hole, and a guide pin fitted into the guide hole has substantially no gap in the large diameter hole. An electrode for electric resistance welding of a type composed of a guide portion which is a large diameter portion fitted in a slidable state and a small diameter portion which penetrates a small diameter hole is described, and further, composed of a synthetic resin. Further, it is described that the metal small-diameter portion is cast into the guide portion, that is, a method is adopted in which the small-diameter portion is set at a predetermined position of the mold and a synthetic resin is poured into the mold.

また、特許第２９０３１４９号公報には、電極内の断面円形のガイド孔が、少なくとも大径孔と小径孔から構成され、ガイド孔に嵌め込まれるガイドピンが、大径孔内に実質的に隙間がなくて摺動できる状態で嵌まり込んでいる大径部であるガイド部と、小径孔を貫通している小径部から構成された形式の電気抵抗溶接用電極が記載され、さらに、小径部の端部にボルトが一体的に設けられ、このボルトを合成樹脂製の上記ガイド部に貫通させてナット締めを行っていることが記載されている。  In Japanese Patent No. 2903149, a guide hole having a circular cross section in the electrode is composed of at least a large-diameter hole and a small-diameter hole, and a guide pin fitted into the guide hole has a gap substantially in the large-diameter hole. There is described an electrode for electric resistance welding of a type composed of a guide portion which is a large-diameter portion fitted in a slidable state and a small-diameter portion penetrating the small-diameter hole. It is described that a bolt is integrally provided at the end, and the nut is tightened by passing the bolt through the guide portion made of synthetic resin.

特許第３７１６３９６号公報Japanese Patent No. 3716396 特許第２９０３１４９号公報Japanese Patent No. 2903149

上記特許文献１に記載されている技術は、ガイド部と小径部が、いわゆる鋳込み方式で一体化されているので、大規模な合成樹脂の金型成型設備を準備する必要があり、不経済である。  In the technique described in Patent Document 1, since the guide portion and the small diameter portion are integrated by a so-called casting method, it is necessary to prepare a large-scale synthetic resin mold molding facility, which is uneconomical. is there.

また、特許文献２に記載されている技術は、ガイド部と小径部が、いわゆるボルト・ナット式構造で一体化されているので、ナットの緩みを防止するために、ナットとボルトを溶接する必要がある。このような箇所に溶接をすることは、合成樹脂製ガイド部を溶損する虞があるので、好ましい構造とはいえない。  Moreover, since the guide part and the small diameter part are integrated by what is called a bolt and nut type structure, the technique described in patent document 2 needs to weld a nut and a bolt in order to prevent the nut from loosening. There is. Welding at such a location is not a preferable structure because there is a risk of melting the synthetic resin guide portion.

本発明は、上記の問題点を解決するために提供されたもので、合成樹脂製ガイド部に金属製等の小径部を差し込んだ形式の電気抵抗溶接用電極の提供を目的とする。  The present invention has been provided to solve the above problems, and an object of the present invention is to provide an electrode for electric resistance welding in which a small diameter portion made of metal or the like is inserted into a synthetic resin guide portion.

請求項１記載の発明は、電極内の断面円形のガイド孔が、少なくとも大径孔と小径孔から構成され、前記ガイド孔に嵌め込まれるガイドピンが、前記大径孔内に実質的に隙間がなくて摺動できる状態で嵌まり込んでいる大径部であるガイド部と、前記小径孔を貫通している小径部から構成され、前記ガイド部の端面と大径孔の内端面が密着するように構成され、前記ガイドビンのガイド部は合成樹脂材料で構成されているとともに、挿入大径孔と挿入小径孔が設けられ、前記ガイドピンの小径部は、金属材料またはセラミック材料等の耐熱硬質材料で構成されているとともに、前記挿入大径孔に挿入されるフランジ部と前記挿入小径孔に挿入される軸部によって構成され、前記フランジ部は前記挿入大径孔と挿入小径孔の境界部に形成された受圧端面に密着するように構成し、前記フランジ部に作用する押圧力によって前記端面が内端面に押し付けられるように構成したことを特徴とする電気抵抗溶接用電極である。  According to the first aspect of the present invention, the guide hole having a circular cross section in the electrode is composed of at least a large-diameter hole and a small-diameter hole, and the guide pin fitted into the guide hole has a gap substantially in the large-diameter hole. The guide portion is a large-diameter portion that is fitted in a slidable state and the small-diameter portion that penetrates the small-diameter hole, and the end surface of the guide portion and the inner end surface of the large-diameter hole are in close contact with each other. The guide portion of the guide bin is made of a synthetic resin material, and is provided with an insertion large-diameter hole and an insertion small-diameter hole. The small-diameter portion of the guide pin is made of a heat resistant material such as a metal material or a ceramic material. The flange portion is composed of a hard material and includes a flange portion inserted into the insertion large-diameter hole and a shaft portion inserted into the insertion small-diameter hole, and the flange portion is a boundary between the insertion large-diameter hole and the insertion small-diameter hole. Formed in the part Configured so as to be in close contact with 圧端 surface, an electrode for electric resistance welding, characterized by being configured to be pressed against the inner end face said end face by a pressing force acting on the flange portion.

前記大径部である合成樹脂製のガイド部に、金属材料またはセラミック材料等の耐熱硬質材料で製作された小径部（軸部）を差し込んで貫通させる構造であると、溶接熱によってガイド部の熱膨張が大きく現れるために、小径部の差し込み嵌合度合いが緩みやすくなる。このような傾向は、後述の「圧入」であっても発生することがある。しかし、本願発明においては、フランジ部が挿入大径孔と挿入小径孔の境界部に形成された受圧端面に密着するように構成し、フランジ部に作用する押圧力によってガイド部の端面が大径孔の内端面に押し付けられるように構成したものであるから、小径部が挿入小径孔内に押し込まれる状態になり、小径部が挿入小径孔や挿入大径孔から抜け出すような現象が発生することがない。このようにして、合成樹脂製のガイド部に、耐熱硬質材料製小径部を差し込んだタイプのものであっても、前述の鋳込み方式やボルト・ナット式と変わらない結合強度の小径部とガイド部との一体化が確保できる。  When the guide part made of a synthetic resin, which is the large diameter part, has a structure in which a small diameter part (shaft part) made of a heat-resistant hard material such as a metal material or a ceramic material is inserted and penetrated, Since thermal expansion appears greatly, the insertion fitting degree of the small diameter portion is likely to be loosened. Such a tendency may occur even in “press-in” described later. However, in the present invention, the flange portion is configured to be in close contact with the pressure receiving end surface formed at the boundary portion between the insertion large-diameter hole and the insertion small-diameter hole, and the end surface of the guide portion has a large diameter due to the pressing force acting on the flange portion. Since it is configured to be pressed against the inner end face of the hole, the small diameter portion is pushed into the insertion small diameter hole, and a phenomenon occurs in which the small diameter portion comes out of the insertion small diameter hole or the insertion large diameter hole. There is no. In this way, even if the guide part made of synthetic resin is inserted into the small diameter part made of heat-resistant hard material, the small diameter part and the guide part have the same bonding strength as the casting method and the bolt / nut type described above. Integration with can be secured.

請求項２記載の発明は、前記小径孔と前記小径部との間に前記ガイドピンが押し下げられたとき圧縮空気が通過する隙間が形成されているとともに、前記ガイド部にはガイドピンの軸方向に前記端面に開通する空気通路が形成されている請求項１記載の電気抵抗溶接用電極である。  According to a second aspect of the present invention, a gap through which compressed air passes when the guide pin is pushed down is formed between the small diameter hole and the small diameter portion, and the guide portion has an axial direction of the guide pin. The electric resistance welding electrode according to claim 1, wherein an air passage is formed in the end face.

圧縮空気の流路は、前記端面に開通する空気通路と小径孔と小径部との間に形成されている前記隙間によって構成され、前記空気通路と前記隙間との間に、開閉弁の機能を果たすガイド部の端面と大径孔の内端面の密着部分が存在している。この密着部分における密着力は、前記フランジ部に作用する押圧力によって端面が内端面に押し付けられるものであるから、密着部分の密着性が確実にえられて、良好な開閉弁機能が確保できる。とくに、確実な密着性がえられるので、圧縮空気が漏れたりすることがない。このようにして圧縮空気がガイド部から小径孔に向かって流されるので、溶着時のスパッタ除去や溶着後の冷却が適正に行われる。  The flow path of the compressed air is constituted by the gap formed between the air passage opened to the end face, the small diameter hole, and the small diameter portion, and the function of the on-off valve is provided between the air passage and the gap. There is a close contact portion between the end surface of the guide portion and the inner end surface of the large-diameter hole. Since the end face is pressed against the inner end face by the pressing force acting on the flange portion, the close contact force at the close contact portion can surely obtain the close contact portion and secure a good on-off valve function. In particular, since reliable adhesion is obtained, compressed air does not leak. Thus, since compressed air is flowed from a guide part toward a small diameter hole, spatter removal at the time of welding and cooling after welding are performed appropriately.

請求項３記載の発明は、前記小径部の軸部は、前記挿入小径孔に圧入されている請求項１または請求項２記載の電気抵抗溶接用電極である。  The invention according to claim 3 is the electrode for electric resistance welding according to claim 1 or 2, wherein the shaft portion of the small diameter portion is press-fitted into the insertion small diameter hole.

このような圧入によって、ガイド部と小径部との一体性が強固に保たれる。  By such press-fitting, the integrity of the guide portion and the small diameter portion is firmly maintained.

請求項４記載の発明は、前記圧入後にガイド部の外表面に仕上げ加工がなされている請求項３記載の電気抵抗溶接用電極である。  The invention according to claim 4 is the electrode for electric resistance welding according to claim 3, wherein the outer surface of the guide portion is finished after the press-fitting.

上記圧入によって合成樹脂製のガイド部の直径が部分的に膨らむことがある。このような膨らみは、ガイド部とガイド孔間の円滑な摺動動作に支障をもたらすのであるが、上述のように圧入後に仕上げ加工を行うことによって、精度の高い円筒面が形成され、ガイド孔との間で良好な摺動動作がえられる。  The diameter of the guide portion made of synthetic resin may partially swell due to the above press-fitting. Such a bulging hinders a smooth sliding operation between the guide portion and the guide hole. However, by performing the finishing process after press-fitting as described above, a highly accurate cylindrical surface is formed, and the guide hole is formed. Good sliding motion can be obtained between

電極全体の断面図である。It is sectional drawing of the whole electrode. ガイドピンの部品状態の断面図等である。It is sectional drawing etc. of the components state of a guide pin. 空気通路の変型例を示す断面図である。It is sectional drawing which shows the modification of an air passage. 小径部の圧入状態を示す断面図である。It is sectional drawing which shows the press fit state of a small diameter part. 仕上げ加工を示す工程図である。It is process drawing which shows finishing. 他のガイドピンを示す電極の断面図である。It is sectional drawing of the electrode which shows another guide pin.

つぎに、本発明の電気抵抗溶接用電極を実施するための形態を説明する。  Next, a mode for carrying out the electrode for electric resistance welding of the present invention will be described.

図１〜図６は、本発明の実施例１を示す。  1 to 6 show a first embodiment of the present invention.

最初に、電極本体について説明する。  First, the electrode body will be described.

銅合金製の電極本体１は、円筒状の形状であり、静止部材（図示していない）に差し込まれる固定部２と、鋼板部品３が載置されるキャップ部４がねじ部５において結合されている。電極本体１には断面円形のガイド孔６が形成され、このガイド孔６は少なくとも大径孔７とキャップ部４の中央部に開口する小径孔８によって構成されている。  The electrode body 1 made of a copper alloy has a cylindrical shape, and a fixing portion 2 to be inserted into a stationary member (not shown) and a cap portion 4 on which the steel plate component 3 is placed are coupled at a screw portion 5. ing. A guide hole 6 having a circular cross section is formed in the electrode body 1, and the guide hole 6 is constituted by at least a large diameter hole 7 and a small diameter hole 8 opened at the center of the cap portion 4.

固定部２の下部にテーパ部９が形成され、このテーパ部９が静止部材に設けたテーパ孔に嵌入されるようになっている。固定部２の側部に圧縮空気をガイド孔６に導入する通気口１０が設けてある。  A tapered portion 9 is formed in the lower portion of the fixed portion 2, and the tapered portion 9 is fitted into a tapered hole provided in the stationary member. A vent 10 for introducing compressed air into the guide hole 6 is provided on the side of the fixed part 2.

つぎに、ガイドピンについて説明する。  Next, the guide pin will be described.

ガイドピン１２は、大径孔７内に実質的に隙間がなくて摺動できる状態で嵌まり込んでいる大径部、すなわちガイド部１３と、小径孔８を貫通している小径部１４から構成されている。ガイド部１３は、耐熱性に優れた合成樹脂、例えば、ポリテトラフルオロエチレン（商品名：テフロン）によって構成された大径部である。  The guide pin 12 includes a large-diameter portion that is fitted in the large-diameter hole 7 so as to be slidable with substantially no gap, that is, a guide portion 13 and a small-diameter portion 14 that penetrates the small-diameter hole 8. It is configured. The guide portion 13 is a large diameter portion made of a synthetic resin excellent in heat resistance, for example, polytetrafluoroethylene (trade name: Teflon).

大径部であるガイド部１３も断面円形であり、その中心部に挿入大径孔１５とこれに連続した状態で挿入小径孔１６が形成してある。小径部１４は、ステンレス鋼のような金属材料またはセラミック材料等の耐熱硬質材料で構成されているとともに、挿入大径孔１５に挿入されるフランジ部１７と、挿入小径孔１６に貫通した状態で挿入される軸部１８によって構成されている。挿入大径孔１５と挿入小径孔１６の境界部に受圧端面１９が形成してあり、フランジ部１７の端面が密着するように構成してある。  The guide portion 13 which is a large diameter portion is also circular in cross section, and an insertion large diameter hole 15 and an insertion small diameter hole 16 are formed in a state of being continuous with the central portion. The small-diameter portion 14 is made of a heat-resistant hard material such as a metal material such as stainless steel or a ceramic material, and penetrates the flange portion 17 inserted into the insertion large-diameter hole 15 and the insertion small-diameter hole 16. It is comprised by the axial part 18 inserted. A pressure-receiving end surface 19 is formed at the boundary between the insertion large-diameter hole 15 and the insertion small-diameter hole 16, and the end surface of the flange portion 17 is configured to be in close contact.

ガイド部１３の端部に端面１１が形成され、端面１１が大径孔７の内端面２４に密着するようになっている。端面１１と内端面２４は、ガイドピン１２の軸線に直交する平面の状態で、しがもガイドピン１２の軸心を環状に包囲する環状面とされている。  An end surface 11 is formed at the end of the guide portion 13, and the end surface 11 is in close contact with the inner end surface 24 of the large-diameter hole 7. The end surface 11 and the inner end surface 24 are planar surfaces that surround the shaft center of the guide pin 12 in a ring shape in a plane perpendicular to the axis of the guide pin 12.

軸部１８の端部にテーパ部２０を介して位置決めピン２１が形成され、鉄製のプロジェクションナット２２のねじ孔が位置決めピン２１に合致するようになっている。なお、符号２３は電極本体１に対応する可動電極である。鋼板部品３に下孔３ａが開けられ、ここを軸部１８が貫通して、鋼板部品３の位置決めがなされている。  A positioning pin 21 is formed at the end of the shaft portion 18 via a taper portion 20 so that a screw hole of an iron projection nut 22 matches the positioning pin 21. Reference numeral 23 denotes a movable electrode corresponding to the electrode body 1. A pilot hole 3 a is formed in the steel plate part 3, and the shaft portion 18 passes through the hole 3 a to position the steel plate part 3.

つぎに、ガイドピンの各部寸法について説明する。  Next, the dimensions of each part of the guide pin will be described.

軸部１８の直径は９ｍｍ、軸部１８の長さは３５ｍｍ、フランジ部１７の直径は１４ｍｍ、フランジ部１７の厚さは２．８ｍｍ、挿入大径孔１５の内径は１４．２ｍｍ、挿入小径孔１６の内径は８．６ｍｍ、ガイド部１３の軸線方向の全長が３３ｍｍ、挿入大径孔１５の軸線方向長さが１６ｍｍである。  The diameter of the shaft 18 is 9 mm, the length of the shaft 18 is 35 mm, the diameter of the flange 17 is 14 mm, the thickness of the flange 17 is 2.8 mm, the inner diameter of the large insertion hole 15 is 14.2 mm, and the small insertion diameter The inner diameter of the hole 16 is 8.6 mm, the total length in the axial direction of the guide portion 13 is 33 mm, and the length in the axial direction of the insertion large-diameter hole 15 is 16 mm.

上記寸法により、ガイド部１３を貫通した状態で挿入された小径部１４は、軸部１８が挿入小径孔１６に対して圧入されている。また、フランジ部１７は僅かな空隙をのこして挿入大径孔１５内に挿入されている。そして、フランジ部１７の端面が受圧端面１９に密着している。  Due to the above dimensions, the shaft portion 18 of the small diameter portion 14 inserted through the guide portion 13 is press-fitted into the insertion small diameter hole 16. The flange portion 17 is inserted into the insertion large-diameter hole 15 with a slight gap. The end surface of the flange portion 17 is in close contact with the pressure receiving end surface 19.

つぎに、大径孔の寸法状態を説明する。  Next, the dimensional state of the large-diameter hole will be described.

大径孔７は、固定部２からキャップ部４の双方にわたって形成されている。固定部２に形成されている大径孔７には、ガイド部１３が、実質的に隙間がなくて摺動できる状態で嵌め込まれており、このような嵌め込まれた摺動区間は挿入大径孔１５の軸線方向長さに相当する区間とされ、図２に符号Ｌ１で示されている。  The large-diameter hole 7 is formed from both the fixed portion 2 to the cap portion 4. The guide portion 13 is fitted into the large-diameter hole 7 formed in the fixed portion 2 in a state in which the guide portion 13 can be slid substantially without a gap, and the fitted sliding section has a large insertion diameter. The section corresponds to the axial length of the hole 15 and is indicated by a symbol L1 in FIG.

また、受圧端面１９と端面１１の間の合成樹脂材料は、小径部１４のフランジ部１７と大径孔７の内端面２４との間で挟み付けられている合成樹脂材料であり、この材料区間は図２に符号Ｌ２で示されている。この区間Ｌ２を包囲する大径孔７の内径は隙間２５が付与された大径部分２６とされている。  The synthetic resin material between the pressure receiving end surface 19 and the end surface 11 is a synthetic resin material sandwiched between the flange portion 17 of the small diameter portion 14 and the inner end surface 24 of the large diameter hole 7, and this material section Is indicated by the symbol L2 in FIG. The inner diameter of the large-diameter hole 7 surrounding the section L2 is a large-diameter portion 26 provided with a gap 25.

つぎに、空気通路について説明する。  Next, the air passage will be described.

空気通路２７は、図１、図２などに示すように、ガイド部１３の表面に軸線方向の平面部２８を４つ形成することによって構成されている。また、軸部１８と小径孔８との間に圧縮空気が通過する隙間２９が形成してある。可動電極２３の進出によってガイドピン１２が押し下げられると、端面１１が内端面２４から離れ、空気流通の空隙が形成される。つまり、端面１１と内端面２４の密着部分が開閉弁の機能を果たしている。通気口１０から入った圧縮空気は、空気通路２７、端面１１と内端面２４の間、隙間２９を通ってナット２２の溶着部の冷却や、スパッタの進入が防止される。  As shown in FIGS. 1, 2, etc., the air passage 27 is configured by forming four axial portions 28 on the surface of the guide portion 13. Further, a gap 29 through which compressed air passes is formed between the shaft portion 18 and the small diameter hole 8. When the guide pin 12 is pushed down by the advancement of the movable electrode 23, the end face 11 is separated from the inner end face 24, and an air circulation gap is formed. That is, the close contact portion between the end face 11 and the inner end face 24 functions as an on-off valve. The compressed air that has entered through the air vent 10 is prevented from cooling the welded portion of the nut 22 and entering the spatter through the air passage 27, between the end face 11 and the inner end face 24, through the gap 29.

フランジ部１７とガイド孔６の内底面の間に圧縮コイルスプリング３０が嵌め込まれており、その張力がフランジ部１７に作用し、小径部１４がガイド部１３に入り込む方向に押圧されている。なお、符号３１は、ガイド孔６の内底面に嵌め込んだ絶縁シートである。フランジ部１７に作用する押圧力は、圧縮空気の圧力と圧縮コイルスプリング３０の張力によって確保されているが、いずれか一方であってもよい。  A compression coil spring 30 is fitted between the flange portion 17 and the inner bottom surface of the guide hole 6, the tension acts on the flange portion 17, and the small diameter portion 14 is pressed in the direction of entering the guide portion 13. Reference numeral 31 denotes an insulating sheet fitted into the inner bottom surface of the guide hole 6. The pressing force acting on the flange portion 17 is ensured by the pressure of the compressed air and the tension of the compression coil spring 30, but may be either one.

つぎに、空気通路の変型例を説明する。  Next, a modified example of the air passage will be described.

図３に示した例は、ガイド部１３の外周近くに軸線方向の貫通孔３２を８つ設けたもので、その上端部は端面１１に開通している。また、同図（Ｃ）に示した空気通路は、ガイド部１３の外周面に軸線方向の凹溝３３を８つ設けたもので、その上端部は端面１１に開通している。  In the example shown in FIG. 3, eight through holes 32 in the axial direction are provided near the outer periphery of the guide portion 13, and the upper end portion thereof is open to the end surface 11. Further, the air passage shown in FIG. 2C is provided with eight axial grooves 33 on the outer peripheral surface of the guide portion 13, and the upper end portion thereof is open to the end surface 11.

つぎに、小径部圧入の変型例を説明する。  Next, a modified example of the small diameter portion press-fitting will be described.

図４（Ａ）に示された小径部１４には、フランジ部１７に隣接させて円周方向の溝部３４が形成されている。これは、フランジ部１７に隣接した箇所を小径にして構成されている。このような小径部１４を挿入小径孔１６に圧入すると、同図（Ｂ）に示すような膨隆部３５が形成される。前述のように、軸部１８の直径は９ｍｍ、挿入小径孔１６の内径は８．６ｍｍであるから、軸部１８は挿入小径孔１６内に圧入された状態になり、そのために合成樹脂材料が凹溝３４内に膨らみ込んで膨隆部３５が形成される。  In the small diameter portion 14 shown in FIG. 4A, a circumferential groove portion 34 is formed adjacent to the flange portion 17. This is configured such that a portion adjacent to the flange portion 17 has a small diameter. When such a small diameter portion 14 is press-fitted into the insertion small diameter hole 16, a bulging portion 35 as shown in FIG. As described above, since the shaft portion 18 has a diameter of 9 mm and the insertion small-diameter hole 16 has an inner diameter of 8.6 mm, the shaft portion 18 is press-fitted into the insertion small-diameter hole 16. A bulging portion 35 is formed by bulging into the concave groove 34.

このような膨隆部３５が形成されることにより、小径部１４に抜け方向の力が過剰に作用しても、膨隆部３５が凹溝３４の角部３６にひっかかるため、小径部１４は容易に抜けることがない、という効果がある。なお、同図（Ｃ）に示したものは、凹溝３４を軸部１８の中間部に配置した例であり、膨隆部３５などの作用効果は先のものと同じである。  By forming such a bulging portion 35, the bulging portion 35 is caught by the corner portion 36 of the concave groove 34 even if a force in the pulling direction is excessively applied to the small diameter portion 14. There is an effect that it does not come out. In addition, what is shown to the figure (C) is the example which has arrange | positioned the ditch | groove 34 in the intermediate part of the axial part 18, and the effect of the swelling part 35 etc. is the same as the previous thing.

つぎに、ガイド部１３の仕上げ加工について説明する。  Next, the finishing process of the guide portion 13 will be described.

図５（Ａ）は、ガイド部１３の素材状態の形状を示す断面図である。同図（Ｂ）は、小径部１４を挿入小径孔１６に圧入し、フランジ部１７が受圧端面１９に密着している状態である。この状態では、小径部１４が圧入してあるので、ガイド部１３は圧入箇所の直径が大きくなって符号３７で示す拡径部となる。そこで、切削仕上げ加工により拡径部３７を除去して真っ直ぐな円筒形状を求め、さらに必要に応じて段部加工を行って端面１１を形成し、それから平面部２８の加工を行う。なお、図５は断面図であるが見やすくするために、ハッチングや梨地の記載が省略されている。  FIG. 5A is a cross-sectional view showing the shape of the material state of the guide portion 13. FIG. 5B shows a state in which the small diameter portion 14 is press-fitted into the insertion small diameter hole 16 and the flange portion 17 is in close contact with the pressure receiving end surface 19. In this state, since the small-diameter portion 14 is press-fitted, the guide portion 13 becomes a diameter-expanded portion indicated by reference numeral 37 with the diameter of the press-fitted portion being increased. Therefore, the diameter-enlarged portion 37 is removed by cutting finishing to obtain a straight cylindrical shape, and further, stepped machining is performed as necessary to form the end face 11, and then the planar portion 28 is machined. Although FIG. 5 is a cross-sectional view, hatching and satin are not shown for easy viewing.

このような仕上げ加工を行うことにより、耐熱硬質材料で作られた小径部１４が合成樹脂製のガイド部１３に圧入されることによって生じる寸法状の問題が解消される。つまり、真っ直ぐで寸法精度の高いガイド部１３が確保されるので、大径孔７内を正確にしかも円滑に摺動・進退させるこが可能となる。  By performing such a finishing process, the dimensional problem caused when the small-diameter portion 14 made of a heat-resistant hard material is press-fitted into the guide portion 13 made of synthetic resin is solved. That is, since the guide portion 13 that is straight and has high dimensional accuracy is ensured, the inside of the large-diameter hole 7 can be slid and moved back and forth accurately and smoothly.

つぎに、ボルト用電極について説明する。  Next, the bolt electrode will be described.

図１〜図５では、プロジェクションナット２２を対象にした場合であるが、図６では、鉄製のプロジェクションボルト３９を対象にしている。プロジェクションボルト３９は、円形のフランジ４０と、それと一体に形成されたボルト軸部４１と、フランジ４０に形成された溶着用突起４２によって構成されている。  Although FIGS. 1 to 5 show the case where the projection nut 22 is targeted, in FIG. 6, the iron projection bolt 39 is targeted. The projection bolt 39 is constituted by a circular flange 40, a bolt shaft portion 41 formed integrally therewith, and a welding projection 42 formed on the flange 40.

小径部１４は、挿入孔４３が設けられた管状の中空構造とされており、この挿入孔４３にボルト軸部４１が挿入される。ボルト軸部４１の長さは挿入孔４３の深さよりも長く設定してあり、小径部１４はキャップ部４の上面から突き出ていて、鋼板部品３をキャップ部４に載せると、小径部１４の先端部が鋼板部品３の下孔４４から突き出るようになっている。それ以外の構成は、図示されていない部分も含めて先の例と同じであり、同様な機能の部材には同一の符号が記載してある。  The small-diameter portion 14 has a tubular hollow structure provided with an insertion hole 43, and the bolt shaft portion 41 is inserted into the insertion hole 43. The length of the bolt shaft portion 41 is set to be longer than the depth of the insertion hole 43, the small diameter portion 14 protrudes from the upper surface of the cap portion 4, and when the steel plate component 3 is placed on the cap portion 4, The leading end protrudes from the prepared hole 44 of the steel plate part 3. The other configuration is the same as that of the previous example including a portion not shown, and the same reference numerals are described for members having similar functions.

図示の状態は、鋼板部品３の下孔４４に小径部１４の先端部が貫通し、挿入孔４３にボルト軸部４１が挿入されている状態であり、これによってボルト軸部４１と下孔４４が同軸状態になっている。ここで可動電極２３が進出してくると、ボルト軸部４１の先端が挿入孔４３の底部を押し下げるので、ガイドピン１２全体が押し下げられて小径部１４が下孔４４から抜け出される。さらに、可動電極２３の加圧が進行すると、溶着用突起４２が鋼板部品３に加圧され、溶接電流が通電されて溶接が完了する。その後、鋼板部品３をプロジェクションボルト３９と一緒に挿入孔４３から抜き取る。  The state shown in the figure is a state in which the tip end portion of the small diameter portion 14 passes through the lower hole 44 of the steel plate part 3 and the bolt shaft portion 41 is inserted into the insertion hole 43, thereby the bolt shaft portion 41 and the lower hole 44. Is in a coaxial state. Here, when the movable electrode 23 advances, the tip of the bolt shaft portion 41 pushes down the bottom portion of the insertion hole 43, so that the entire guide pin 12 is pushed down and the small diameter portion 14 is pulled out from the lower hole 44. Further, when the pressurization of the movable electrode 23 proceeds, the welding protrusion 42 is pressurized to the steel plate part 3, and a welding current is applied to complete the welding. Thereafter, the steel plate part 3 is extracted from the insertion hole 43 together with the projection bolt 39.

以上に説明した実施例１の作用効果は、つぎのとおりである。  The operational effects of the first embodiment described above are as follows.

大径部である合成樹脂製のガイド部１３に、金属材料またはセラミック材料等の耐熱硬質材料で製作された小径部１４（軸部１８）を差し込んで貫通させる構造であると、溶接熱によってガイド部１３の熱膨張が大きく現れるために、小径部１４の差し込み嵌合度合いが緩みやすくなる。このような傾向は、圧入であっても発生することがある。しかし、本実施例においては、フランジ部１７が挿入大径孔１５と挿入小径孔１６の境界部に形成された受圧端面１９に密着するように構成し、フランジ部１７に作用する押圧力によってガイド部１３の端面１１が大径孔７の内端面２４に押し付けられるように構成したものであるから、小径部１４が挿入小径孔１６内に押し込まれる状態になり、小径部１４が挿入小径孔１６や挿入大径孔１５から抜け出すような現象が発生することがない。このようにして、合成樹脂製のガイド部１３に、耐熱硬質材料製小径部１４を差し込んだタイプのものであっても、前述の鋳込み方式やボルト・ナット式と変わらない結合強度の小径部１４とガイド部１３との一体化が確保できる。  If the structure has a structure in which a small-diameter portion 14 (shaft portion 18) made of a heat-resistant hard material such as a metal material or a ceramic material is inserted into and penetrates a guide portion 13 made of synthetic resin, which is a large-diameter portion, the guide is generated by welding heat. Since the thermal expansion of the part 13 appears greatly, the insertion fitting degree of the small diameter part 14 is easily loosened. Such a tendency may occur even in press-fitting. However, in this embodiment, the flange portion 17 is configured to be in close contact with the pressure receiving end surface 19 formed at the boundary portion between the insertion large-diameter hole 15 and the insertion small-diameter hole 16, and is guided by the pressing force acting on the flange portion 17. Since the end surface 11 of the portion 13 is configured to be pressed against the inner end surface 24 of the large-diameter hole 7, the small-diameter portion 14 is pushed into the insertion small-diameter hole 16, and the small-diameter portion 14 is inserted into the insertion small-diameter hole 16. In addition, the phenomenon of coming out of the insertion large-diameter hole 15 does not occur. In this way, even if the guide portion 13 made of synthetic resin is inserted into the small diameter portion 14 made of heat-resistant hard material, the small diameter portion 14 having the same bonding strength as the above-described casting method or bolt / nut type. And the guide portion 13 can be integrated.

小径孔８と小径部１４との間にガイドピン１２が押し下げられたとき圧縮空気が通過する隙間２９が形成されているとともに、ガイド部１３にはガイドピン１２の軸方向に端面１１に開通する空気通路２７、３２、３３が形成されている。  A gap 29 through which compressed air passes when the guide pin 12 is pushed down is formed between the small diameter hole 8 and the small diameter portion 14, and the guide portion 13 is opened to the end surface 11 in the axial direction of the guide pin 12. Air passages 27, 32, and 33 are formed.

圧縮空気の流路は、端面１１に開通する空気通路２７、３２、３３と小径孔８と小径部１４との間に形成されている隙間２９によって構成され、空気通路２７、３２、３３と隙間２９との間に、開閉弁の機能を果たすガイド部１３の端面１１と大径孔７の内端面２４の密着部分が存在している。この密着部分における密着力は、フランジ部１７に作用する押圧力によって端面１１が内端面２４に押し付けられるものであるから、密着部分の密着性が確実にえられて、良好な開閉弁機能が確保できる。とくに、確実な密着性がえられるので、圧縮空気が漏れたりすることがない。このようにして圧縮空気がガイド部１３から小径孔８に向かって流されるので、溶着時のスパッタ除去や溶着後の冷却が適正に行われる。  The flow path of the compressed air is constituted by air passages 27, 32, 33 that open to the end face 11 and a gap 29 formed between the small diameter hole 8 and the small diameter portion 14, and the air passages 27, 32, 33 and the gap 29, there is a close contact portion between the end surface 11 of the guide portion 13 that functions as an on-off valve and the inner end surface 24 of the large-diameter hole 7. Since the end surface 11 is pressed against the inner end surface 24 by the pressing force acting on the flange portion 17, the close contact force at the close contact portion ensures the close contact portion and ensures a good on-off valve function. it can. In particular, since reliable adhesion is obtained, compressed air does not leak. Thus, since compressed air is flowed from the guide part 13 toward the small diameter hole 8, the spatter removal at the time of welding and the cooling after welding are appropriately performed.

小径部１４の軸部１８は、挿入小径孔１６に圧入されている。  The shaft portion 18 of the small diameter portion 14 is press-fitted into the insertion small diameter hole 16.

このような圧入によって、ガイド部１３と小径部１４との一体性が強固に保たれる。  By such press fitting, the integrity of the guide portion 13 and the small diameter portion 14 is firmly maintained.

上記圧入後に、ガイド部１３の外表面に仕上げ加工がなされている。  After the press-fitting, finishing is performed on the outer surface of the guide portion 13.

圧入によって合成樹脂製のガイド部１３の直径が部分的に膨らむことがある。このような膨らみは、ガイド部１３とガイド孔６間の円滑な摺動動作に支障をきたすものであるが、上述のように圧入後に仕上げ加工を行うことによって、精度の高い真っ直ぐな円筒面が形成され、ガイド孔６との間で良好な摺動動作がえられる。  The diameter of the guide portion 13 made of synthetic resin may partially swell due to the press-fitting. Such a bulging hinders a smooth sliding operation between the guide portion 13 and the guide hole 6. However, by performing the finishing process after press-fitting as described above, a highly accurate straight cylindrical surface can be obtained. It is formed, and a favorable sliding motion can be obtained with the guide hole 6.

小径部１４のフランジ部１７と大径孔７の内端面２４との間で挟み付けられているガイド部１３の合成樹脂材料は、反復される挟み付けの押圧力によって直径方向に膨らむ傾向になり、とくに、内端面２４近傍の膨らみ量が大きく現れる。しかし、上記挟み付けられている区間Ｌ２の箇所の大径孔７には隙間２５が存置されているので、上記膨らみはこの隙間２５に向かってなされる。したがって、上記挟み付けられている区間Ｌ２の下側（Ｌ１）が大径孔７と摺動するようになっているので、上記膨らみが異常に大きくなっても、ガイドピン１２の摺動動作に支障が発生しせず、円滑で信頼性のある動作が確保できる。  The synthetic resin material of the guide portion 13 sandwiched between the flange portion 17 of the small-diameter portion 14 and the inner end surface 24 of the large-diameter hole 7 tends to swell in the diametrical direction due to repeated pressing force. In particular, the amount of bulge in the vicinity of the inner end face 24 appears greatly. However, since the gap 25 exists in the large-diameter hole 7 in the section L2 that is sandwiched, the bulge is made toward the gap 25. Accordingly, since the lower side (L1) of the sandwiched section L2 slides with the large-diameter hole 7, even if the bulge becomes abnormally large, the guide pin 12 slides. Smooth and reliable operation can be ensured without any trouble.

また、溶着箇所に近いＬ２の部分の方が熱的影響を受けやすいのであるが、鋼板部品３に近い箇所の大径孔７に隙間２５が配置してあるので、ガイド部１３（Ｌ２）の熱膨張は隙間２５に吸収されて、領域Ｌ１における摺動性に支障が生じない、という効果がある。  Moreover, although the part of L2 close | similar to a welding location is easy to receive a thermal influence, since the clearance gap 25 is arrange | positioned in the large diameter hole 7 of the location close | similar to the steel plate component 3, the guide part 13 (L2) The thermal expansion is absorbed by the gap 25, and there is an effect that the sliding property in the region L1 is not hindered.

膨隆部３５が形成されることにより、小径部１４に抜け方向の力が過剰に作用しても、膨隆部３５が凹溝３４の角部３６にひっかかるため、小径部１４は容易に抜けることがない、という効果がある。  By forming the bulging portion 35, even if excessive force in the pulling direction acts on the small diameter portion 14, the bulging portion 35 is caught on the corner 36 of the concave groove 34, so that the small diameter portion 14 can be easily pulled out. There is no effect.

上述のように、本発明の電極によれば、合成樹脂製ガイド部に金属製等の小径部を差し込んだ形式のものにおいて、金属部と合成樹脂部との一体化が十分になされるものである。したがって、信頼性の高い電極構造が確保できて、自動車の車体溶接工程や、家庭電化製品の板金溶接工程などの広い産業分野で利用できる。  As described above, according to the electrode of the present invention, the metal part and the synthetic resin part are sufficiently integrated in a type in which a small diameter part such as a metal is inserted into the synthetic resin guide part. is there. Therefore, a highly reliable electrode structure can be ensured, and it can be used in a wide range of industrial fields such as automobile body welding processes and home appliance sheet metal welding processes.

１ 電極本体
３ 鋼板部品
６ ガイド孔
７ 大径孔
８ 小径孔
１１ 端面
１２ ガイドピン
１３ ガイド部、大径部
１４ 小径部
１５ 挿入大径孔
１６ 挿入小径孔
１７ フランジ部
１８ 軸部
１９ 受圧端面
２２ プロジェクションナット
２４ 内端面
２７ 空気通路
２９ 隙間
３２ 貫通孔（空気通路）
３３ 凹溝（空気通路）
３９ プロジェクションボルト
４３ 挿入孔
４４ 下孔DESCRIPTION OF SYMBOLS 1 Electrode main body 3 Steel plate components 6 Guide hole 7 Large diameter hole 8 Small diameter hole 11 End surface 12 Guide pin 13 Guide part, Large diameter part 14 Small diameter part 15 Insertion large diameter hole 16 Insertion small diameter hole 17 Flange part 18 Shaft part 19 Pressure receiving end surface 22 Projection nut 24 Inner end face 27 Air passage 29 Clearance 32 Through hole (air passage)
33 Groove (air passage)
39 Projection Bolt 43 Insertion Hole 44 Pilot Hole

Claims (4)

電極内の断面円形のガイド孔が、少なくとも大径孔と小径孔から構成され、
前記ガイド孔に嵌め込まれるガイドピンが、前記大径孔内に実質的に隙間がなくて摺動できる状態で嵌まり込んでいる大径部であるガイド部と、前記小径孔を貫通している小径部から構成され、
前記ガイド部の端面と大径孔の内端面が密着するように構成され、
前記ガイドピンのガイド部は合成樹脂材料で構成されているとともに、挿入大径孔と挿入小径孔が設けられ、
前記ガイドピンの小径部は、金属材料またはセラミック材料等の耐熱硬質材料で構成されているとともに、前記挿入大径孔に挿入されるフランジ部と前記挿入小径孔に挿入される軸部によって構成され、
前記フランジ部は前記挿入大径孔と挿入小径孔の境界部に形成された受圧端面に密着するように構成し、
前記フランジ部に作用する押圧力によって前記端面が内端面に押し付けられるように構成したことを特徴とする電気抵抗溶接用電極。The guide hole having a circular cross section in the electrode is composed of at least a large diameter hole and a small diameter hole,
A guide pin that is fitted into the guide hole passes through the small-diameter hole and a guide portion that is a large-diameter portion that is fitted in a state in which the guide pin is slidable with substantially no gap in the large-diameter hole. It consists of a small diameter part,
The end face of the guide portion and the inner end face of the large-diameter hole are configured to be in close contact with each other,
The guide portion of the guide pin is made of a synthetic resin material, and is provided with an insertion large diameter hole and an insertion small diameter hole.
The small-diameter portion of the guide pin is composed of a heat-resistant hard material such as a metal material or a ceramic material, and is composed of a flange portion inserted into the insertion large-diameter hole and a shaft portion inserted into the insertion small-diameter hole. ,
The flange portion is configured to be in close contact with a pressure receiving end surface formed at a boundary portion between the insertion large diameter hole and the insertion small diameter hole,
An electrode for electric resistance welding, wherein the end face is pressed against an inner end face by a pressing force acting on the flange portion. 前記小径孔と前記小径部との間に前記ガイドピンが押し下げられたとき圧縮空気が通過する隙間が形成されているとともに、前記ガイド部にはガイドピンの軸方向に前記端面に開通する空気通路が形成されている請求項１記載の電気抵抗溶接用電極。  A gap through which compressed air passes when the guide pin is pushed down is formed between the small-diameter hole and the small-diameter portion, and the guide passage is open to the end face in the axial direction of the guide pin. The electrode for electric resistance welding according to claim 1, wherein: 前記小径部の軸部は、前記挿入小径孔に圧入されている請求項１または請求項２記載の電気抵抗溶接用電極。  The electrode for electric resistance welding according to claim 1 or 2, wherein the shaft portion of the small diameter portion is press-fitted into the insertion small diameter hole. 前記圧入後にガイド部の外表面に仕上げ加工がなされている請求項３記載の電気抵抗溶接用電極。  The electrode for electrical resistance welding according to claim 3, wherein the outer surface of the guide portion is finished after the press-fitting.
JP2013200543A 2013-09-05 2013-09-05 Electric resistance welding electrode Active JP5967443B2 (en)

Priority Applications (1)

Application Number Priority Date Filing Date Title
JP2013200543A JP5967443B2 (en) 2013-09-05 2013-09-05 Electric resistance welding electrode

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
JP2013200543A JP5967443B2 (en) 2013-09-05 2013-09-05 Electric resistance welding electrode

Publications (2)

Publication Number Publication Date
JP2015051457A true JP2015051457A (en) 2015-03-19
JP5967443B2 JP5967443B2 (en) 2016-08-10

Family

ID=52700890

Family Applications (1)

Application Number Title Priority Date Filing Date
JP2013200543A Active JP5967443B2 (en) 2013-09-05 2013-09-05 Electric resistance welding electrode

Country Status (1)

Country Link
JP (1) JP5967443B2 (en)

Cited By (4)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
JP2017006983A (en) * 2015-06-23 2017-01-12 青山　省司 Electrode for electric resistance-welding, and welding method
JP2017030048A (en) * 2015-07-29 2017-02-09 青山　省司 Electrode for electric resistance welding
CN111050985A (en) * 2017-08-17 2020-04-21 青山省司 Electrode for resistance welding and method for maintaining airtightness
WO2021171864A1 (en) * 2020-02-25 2021-09-02 青山　省司 Electrical resistance welding electrode

Citations (6)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
JPS59124675U (en) * 1983-02-11 1984-08-22 青山　好高 Guide pin for spot welding electrode
JPH08197263A (en) * 1995-01-23 1996-08-06 Seki Kogyo Kk Electrode part structure of resistance welding machine
US6355900B1 (en) * 2000-04-17 2002-03-12 Darrell Sherman Nut position sensing weld point
JP2002248578A (en) * 2001-12-08 2002-09-03 Yoshitaka Aoyama Electrode for electric resistance welding
JP2002370104A (en) * 2001-06-15 2002-12-24 Nsk Ltd Bearing unit for wheel and method of manufacturing the same
US20090159570A1 (en) * 2007-12-24 2009-06-25 Jiayuan Chen Projection welding electrode with replaceable electrode element

Patent Citations (6)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
JPS59124675U (en) * 1983-02-11 1984-08-22 青山　好高 Guide pin for spot welding electrode
JPH08197263A (en) * 1995-01-23 1996-08-06 Seki Kogyo Kk Electrode part structure of resistance welding machine
US6355900B1 (en) * 2000-04-17 2002-03-12 Darrell Sherman Nut position sensing weld point
JP2002370104A (en) * 2001-06-15 2002-12-24 Nsk Ltd Bearing unit for wheel and method of manufacturing the same
JP2002248578A (en) * 2001-12-08 2002-09-03 Yoshitaka Aoyama Electrode for electric resistance welding
US20090159570A1 (en) * 2007-12-24 2009-06-25 Jiayuan Chen Projection welding electrode with replaceable electrode element

Cited By (7)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
JP2017006983A (en) * 2015-06-23 2017-01-12 青山　省司 Electrode for electric resistance-welding, and welding method
JP2017030048A (en) * 2015-07-29 2017-02-09 青山　省司 Electrode for electric resistance welding
CN111050985A (en) * 2017-08-17 2020-04-21 青山省司 Electrode for resistance welding and method for maintaining airtightness
CN111050985B (en) * 2017-08-17 2021-07-30 青山省司 Electrode for resistance welding and method for maintaining airtightness
WO2021171864A1 (en) * 2020-02-25 2021-09-02 青山　省司 Electrical resistance welding electrode
CN115210028A (en) * 2020-02-25 2022-10-18 青山省司 Resistance welding electrode
CN115210028B (en) * 2020-02-25 2024-05-24 青山省司 Resistance welding electrode

Also Published As

Publication number Publication date
JP5967443B2 (en) 2016-08-10

Similar Documents

Publication Publication Date Title
CA2215710C (en) Electrode for welding
JP5967443B2 (en) Electric resistance welding electrode
JP6541029B2 (en) Electric resistance welding electrode
US10632562B2 (en) Electrode for electric resistance welding
US9943926B2 (en) Press-fit joining apparatus
US20180043420A1 (en) Cast part with a metallic functional region
KR101487215B1 (en) Bonding method for cooling line of die-casting mold using explosive welding and, die-casting mold manufactured by the same
JP6624365B2 (en) Cooling method of guide pin in electric resistance welding electrode
JP5967444B2 (en) Method for manufacturing guide pin for electric resistance welding electrode
JP2017136639A (en) Electrode for electric resistance-welding
JP6720458B2 (en) Guide member for electric resistance welding electrode
JP6857792B2 (en) Welding electrodes and welding methods for perforated parts
JP2017074616A (en) Electric resistance-welding electrode
EP4070905A1 (en) Electrical resistance welding electrode
JP2017030048A (en) Electrode for electric resistance welding
US11440079B1 (en) Method for producing an electrical bushing
JP7017716B2 (en) Electrode for electric resistance welding
JP2020006432A (en) Electric resistance-welding method for projection bolt
US11920702B2 (en) Connecting element for a pipe arrangement and arrangement
US11149595B2 (en) Joining apparatus and method of joining
US11491568B2 (en) Method for manufacturing solenoid sleeve
CN107709865A (en) Electroplate steel pipe and metal connecting piece assembly and its manufacture method
JP2019042798A (en) Electrode for electrical resistance welding
JP2023069974A (en) Electrode for electric resistance welding
JP2020199548A (en) Composite type guide pin in electric resistance-welding electrode

Legal Events

Date Code Title Description
A621 Written request for application examination

Free format text: JAPANESE INTERMEDIATE CODE: A621

Effective date: 20150107

A977 Report on retrieval

Free format text: JAPANESE INTERMEDIATE CODE: A971007

Effective date: 20160121

A131 Notification of reasons for refusal

Free format text: JAPANESE INTERMEDIATE CODE: A131

Effective date: 20160216

A521 Written amendment

Free format text: JAPANESE INTERMEDIATE CODE: A523

Effective date: 20160411

TRDD Decision of grant or rejection written
A01 Written decision to grant a patent or to grant a registration (utility model)

Free format text: JAPANESE INTERMEDIATE CODE: A01

Effective date: 20160607

A61 First payment of annual fees (during grant procedure)

Free format text: JAPANESE INTERMEDIATE CODE: A61

Effective date: 20160622

R150 Certificate of patent or registration of utility model

Ref document number: 5967443

Country of ref document: JP

Free format text: JAPANESE INTERMEDIATE CODE: R150