JP6960067B1 - Joining device - Google Patents

Joining device Download PDF

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JP6960067B1
JP6960067B1 JP2021018938A JP2021018938A JP6960067B1 JP 6960067 B1 JP6960067 B1 JP 6960067B1 JP 2021018938 A JP2021018938 A JP 2021018938A JP 2021018938 A JP2021018938 A JP 2021018938A JP 6960067 B1 JP6960067 B1 JP 6960067B1
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contact surface
component
upper electrode
head
lower electrode
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JP2022121936A (en
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欣 鈴木
良和 北村
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G Tekt Corp
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Abstract

【課題】位置ずれがない状態で、ボタン部品を電極に配置する。【解決手段】接合装置は、頭部１３１ａを第１当接面１１１に吸着させる固定機構１０５を備える。固定機構１０５は、第１当接面１１１に開口１０６を備えて上部電極１０１に形成された空気を流通可能な空気通路１０７と、空気通路１０７に接続された負圧機構１０８とを備える。固定機構１０５は、負圧機構１０８により空気通路１０７から空気を吸引することで、頭部１３１ａを第１当接面１１１に吸着させる。【選択図】 図１PROBLEM TO BE SOLVED: To arrange a button component on an electrode in a state where there is no misalignment. A joining device includes a fixing mechanism 105 that attracts a head 131a to a first contact surface 111. The fixing mechanism 105 includes an air passage 107 having an opening 106 in the first contact surface 111 and capable of passing air formed in the upper electrode 101, and a negative pressure mechanism 108 connected to the air passage 107. The fixing mechanism 105 attracts the head 131a to the first contact surface 111 by sucking air from the air passage 107 by the negative pressure mechanism 108. [Selection diagram] Fig. 1

Description

本発明は、鋼材からなる構造体に対してアルミニウム材料などの異種材料の構造体を接合する接合装置に関する。 The present invention relates to a joining device for joining a structure made of a different material such as an aluminum material to a structure made of a steel material.

車輌を構成する部品（車体部品）には、高い強度および軽量が要求されている。このため、部品を形成する材料には、例えば、高張力鋼やアルミニウム材料や、高張力鋼とアルミニウム材料とを一体とした複合部材が用いられている。これらのような異種材料の結合においては、例えば、リベット（ボタン部品）の軸部を孔の開いていないアルミニウム板に押し込むことにより挿通させ、また、予めアルミニウム板に開口を形成しておき、この開口にリベットの軸部を勘合させ、この後、軸部先端と鋼板とを溶接（かしめ締結）している（特許文献１参照）。 The parts (body parts) that make up the vehicle are required to have high strength and light weight. Therefore, as the material for forming the component, for example, a high-strength steel or an aluminum material, or a composite member in which the high-strength steel and the aluminum material are integrated is used. In the bonding of dissimilar materials such as these, for example, the shaft portion of the rivet (button part) is inserted by pushing it into an aluminum plate having no holes, and an opening is formed in the aluminum plate in advance. The shaft portion of the rivet is fitted into the opening, and then the tip of the shaft portion and the steel plate are welded (caulked) (see Patent Document 1).

上述した技術では、まず、ポンチとカウンターパンチとを用い、ボタン部品の軸部をアルミニウム板に挿通する。次に、アルミニウム板を鋼板と重ね、ボタン部品の軸部の先端部は、鋼板の表面に当接させる。次に、軸部が挿通されている溶接箇所を、抵抗スポット溶接を実施する溶接装置の上部電極の下端面に配置する。溶接装置は、上部電極の下方に、上部電極と向かい合う状態に下部電極が配置されている。次に、上部電極を下部電極の側に下降させ、上部電極の下端面をボタン部品の頭部を当接させる。 In the above-mentioned technique, first, a punch and a counter punch are used to insert the shaft portion of the button component into the aluminum plate. Next, the aluminum plate is overlapped with the steel plate, and the tip of the shaft portion of the button component is brought into contact with the surface of the steel plate. Next, the welded portion through which the shaft portion is inserted is arranged on the lower end surface of the upper electrode of the welding apparatus for performing resistance spot welding. In the welding apparatus, the lower electrode is arranged below the upper electrode so as to face the upper electrode. Next, the upper electrode is lowered toward the lower electrode, and the lower end surface of the upper electrode is brought into contact with the head of the button component.

次に、上部電極と、鋼板に当接している下部電極とに通電することで、ボタン部品の軸部の先端と鋼板とを、よく知られた抵抗スポット溶接により溶接する。このとき、ボタン部品の先端が鋼板に当接した状態で、上部電極によりボタン部品に圧力を加えながら先端部と鋼板とを抵抗スポット溶接により溶接する。これらのことにより、ボタン部品の先端部が鋼板に溶接され、鋼板とアルミニウム板とが、接合された状態が得られる。 Next, by energizing the upper electrode and the lower electrode in contact with the steel plate, the tip of the shaft portion of the button component and the steel plate are welded by well-known resistance spot welding. At this time, with the tip of the button component in contact with the steel plate, the tip and the steel plate are welded by resistance spot welding while applying pressure to the button component by the upper electrode. As a result, the tip of the button component is welded to the steel plate, and a state in which the steel plate and the aluminum plate are joined can be obtained.

ここで、上述した技術では、まず、ポンチとカウンターパンチとを用い、ボタン部品の軸部をアルミニウム板に挿通させ、この後、溶接装置を用いて溶接しているため、工程が長くなる。これに対し、溶接装置において、軸部のアルミニウム板への挿通と溶接とを実施することで、工程の短縮化が図れる。このためには、例えば、ボタン部品の軸部の先端を先細りの形状とすることで、アルミニウム板への挿通をより容易にすることができる。 Here, in the above-described technique, first, a punch and a counter punch are used to insert the shaft portion of the button component into the aluminum plate, and then welding is performed using a welding device, so that the process becomes long. On the other hand, in the welding apparatus, the process can be shortened by inserting the shaft portion into the aluminum plate and welding. For this purpose, for example, by forming the tip of the shaft portion of the button component into a tapered shape, it is possible to facilitate insertion into the aluminum plate.

ただし、ボタン部品の軸部の先端を先細りの形状とすると、アルミニウム板の上に自立して載置することができず、アルミニウム板の平面に対して軸部が垂直な状態で、ボタン部品の軸部をアルミニウム板に挿通させることが困難となる。 However, if the tip of the shaft part of the button part is tapered, it cannot be placed independently on the aluminum plate, and the shaft part is perpendicular to the flat surface of the aluminum plate. It becomes difficult to insert the shaft portion through the aluminum plate.

これに対し、図２示す溶接装置を用いることで、アルミニウム板の平面に対して軸部が垂直な状態で、ボタン部品の軸部をアルミニウム板に挿通させることが考えられる。まず、下部電極３０１の当接面３１１の上に、頭部１３１ａおよび頭部１３１ａに接続する軸部１３１ｂから構成されて軸方向断面が略Ｔ字状の鋼からなるボタン部品１３１の頭部１３１ａを大地側として載置する。次に、アルミニウム板３３２の上に鋼板３３３が重ね、溶接箇所を、ボタン部品１３１が載置されている下部電極３０１の上側に配置する。平坦な当接面３１１の上に、ボタン部品１３１の頭部１３１ａを大地側として載置するので、軸部１３１ｂは、アルミニウム板３３２の平面に対して垂直な状態とすることが極めて容易である。 On the other hand, by using the welding apparatus shown in FIG. 2, it is conceivable that the shaft portion of the button component is inserted into the aluminum plate in a state where the shaft portion is perpendicular to the flat surface of the aluminum plate. First, the head 131a of the button component 131, which is composed of the head 131a and the shaft portion 131b connected to the head 131a on the contact surface 311 of the lower electrode 301 and has a substantially T-shaped cross section in the axial direction. Is placed as the ground side. Next, the steel plate 333 is superposed on the aluminum plate 332, and the welded portion is arranged above the lower electrode 301 on which the button component 131 is placed. Since the head 131a of the button component 131 is placed on the flat contact surface 311 with the head portion 131a on the ground side, it is extremely easy for the shaft portion 131b to be in a state perpendicular to the plane of the aluminum plate 332. ..

次いで、加圧機構３０４を動作させ、ボタン部品１３１の頭部１３１ａに当接する下部電極３０１と、第１部品１３２の側に配置されて、第２当接面３２１が第１部品１３２に当接する上部電極３０２との間に力を加えることで、ボタン部品１３１に圧力を加えて、アルミニウム板３３２の表面側からボタン部品１３１の軸部１３１ｂを軸方向に押し込む。この押し込みにより、軸部１３１ｂの先端部１３１ｃを鋼板３３３に当接させる。この後、電源３０３により、下部電極３０１と上部電極３０２との間を通電状態とすることで、先端部１３１ｃと鋼板３３３とを抵抗スポット溶接により溶接する。 Next, the pressurizing mechanism 304 is operated, and the lower electrode 301 that contacts the head 131a of the button component 131 and the second contact surface 321 that is arranged on the side of the first component 132 come into contact with the first component 132. By applying a force between the upper electrode 302 and the button component 131, pressure is applied to the button component 131 to push the shaft portion 131b of the button component 131 in the axial direction from the surface side of the aluminum plate 332. By this pushing, the tip portion 131c of the shaft portion 131b is brought into contact with the steel plate 333. After that, the power supply 303 energizes the space between the lower electrode 301 and the upper electrode 302, so that the tip portion 131c and the steel plate 333 are welded by resistance spot welding.

特開２０１５−０６２９１１号公報Japanese Unexamined Patent Publication No. 2015-062911

しかしながら、上述した技術では、下部電極の平坦な当接面に、ボタン部品の平坦な頭部を載置するので、ボタン部品の位置ずれが発生する懸念がある。また、アルミニウム板および鋼板が配置された状態では、下部電極の上に載置されているボタン部品の状態を、上方から確認することができないため、ボタン部品の位置ずれを修正することが容易ではない。 However, in the above-mentioned technique, since the flat head of the button component is placed on the flat contact surface of the lower electrode, there is a concern that the position of the button component may be displaced. Further, in the state where the aluminum plate and the steel plate are arranged, the state of the button component placed on the lower electrode cannot be confirmed from above, so that it is not easy to correct the misalignment of the button component. No.

本発明は、以上のような問題点を解消するためになされたものであり、位置ずれがない状態で、ボタン部品を電極に配置することを目的とする。 The present invention has been made to solve the above problems, and an object of the present invention is to arrange a button component on an electrode in a state where there is no misalignment.

本発明に係る接合装置は、鋼材からなる第１部品の上に、鋼材とは異なる材料から構成された第２部品を重ね、頭部および頭部に接続する軸部から構成されて軸方向断面が略Ｔ字状の鋼からなるボタン部品の頭部に当接する上部電極と、第１部品の側に配置されて第１部品に当接する下部電極との間に力を加えることで、ボタン部品に圧力を加えて、第２部品の表面側からボタン部品の軸部を軸方向に押し込み、軸部の先端部を第１部品に当接させ、先端部と第１部品とを抵抗スポット溶接により溶接する接合方法の実施に使用する接合装置であって、ボタン部品の頭部が当接する第１当接面を備える上部電極と、上部電極に対して大地の側に配置され、第１部品が当接する第２当接面を備える下部電極と、 上部電極、下部電極がそれぞれ接続され、ボタン部品の先端部が第１部品と接触した時に、上部電極と下部電極との間が通電して、先端部と第１部品との接触箇所を加熱するための電源と、上部電極と下部電極との距離が小さくなるように、上部電極と下部電極との間に力を加える加圧機構と、頭部を第１当接面に吸着させる固定機構とを備え、第１当接面と第２当接面とは、互いに向かい合って配置されている。 The joining device according to the present invention is composed of a head and a shaft portion connected to the head by superimposing a second part made of a material different from the steel material on the first part made of a steel material and having an axial cross section. By applying a force between the upper electrode that abuts the head of the button component made of substantially T-shaped steel and the lower electrode that is arranged on the side of the first component and abuts on the first component, the button component The shaft part of the button part is pushed in the axial direction from the surface side of the second part, the tip part of the shaft part is brought into contact with the first part, and the tip part and the first part are welded by resistance spot welding. A joining device used to carry out a joining method for welding, in which an upper electrode having a first contact surface with which the head of a button component abuts and a first component arranged on the ground side with respect to the upper electrode are provided. The lower electrode having the second contact surface to be in contact with the upper electrode and the lower electrode are connected to each other, and when the tip of the button component comes into contact with the first component, the upper electrode and the lower electrode are energized. A power supply for heating the contact point between the tip and the first component, a pressurizing mechanism that applies force between the upper electrode and the lower electrode so that the distance between the upper electrode and the lower electrode becomes smaller, and a head. A fixing mechanism for attracting the portion to the first contact surface is provided, and the first contact surface and the second contact surface are arranged so as to face each other.

請求項１上記接合装置の一構成例において、加圧機構は、上部電極を、下部電極の側に押し下げることで、上部電極と下部電極との間に力を加える。 Claim 1 In one configuration example of the joining device, the pressurizing mechanism applies a force between the upper electrode and the lower electrode by pushing the upper electrode toward the lower electrode.

上記接合装置の一構成例において、固定機構は、第１当接面に開口を備えて上部電極に形成された空気を流通可能な空気通路と、空気通路に接続された負圧機構とを備え、負圧機構により空気通路から空気を吸引することで、頭部を第１当接面に吸着させる。 In one configuration example of the joining device, the fixing mechanism includes an air passage having an opening in the first contact surface and capable of passing air formed in the upper electrode, and a negative pressure mechanism connected to the air passage. By sucking air from the air passage by the negative pressure mechanism, the head is attracted to the first contact surface.

上記接合装置の一構成例において、第１当接面の周囲に形成され、第１当接面に吸着した頭部の周囲を囲う枠を備える。 In one configuration example of the joining device, a frame formed around the first contact surface and surrounding the head surface attracted to the first contact surface is provided.

以上説明したように、本発明によれば、上部電極に固定機構を設けたので、位置ずれがない状態で、ボタン部品を電極に配置することができる。 As described above, according to the present invention, since the fixing mechanism is provided on the upper electrode, the button component can be arranged on the electrode without any misalignment.

図１は、本発明の実施の形態に係る接合装置の構成を示す構成図である。FIG. 1 is a configuration diagram showing a configuration of a joining device according to an embodiment of the present invention. 図２は、従来の接合装置の構成を示す構成図である。FIG. 2 is a configuration diagram showing a configuration of a conventional joining device.

以下、本発明の実施の形態に係る接合装置について図１を参照して説明する。この接合装置は、よく知られた接合装置と同様に、上部電極、下部電極、電源、加圧機構を備える。この接合装置は、ボタン部品１３１を用いて、鋼材からなる第１部品１３２に、鋼材とは異なる材料（例えばアルミニウム合金）から構成された第２部品１３３を接合するための装置である。第１部品１３２、第２部品１３３は、例えば、板部材である。また、ボタン部品１３１は、鋼からなり、頭部１３１ａおよび頭部１３１ａに接続する軸部１３１ｂから構成されて軸方向断面が略Ｔ字状とされている。 Hereinafter, the joining device according to the embodiment of the present invention will be described with reference to FIG. This joining device, like a well-known joining device, includes an upper electrode, a lower electrode, a power supply, and a pressurizing mechanism. This joining device is a device for joining a second part 133 made of a material different from the steel material (for example, an aluminum alloy) to the first part 132 made of a steel material by using the button part 131. The first component 132 and the second component 133 are, for example, plate members. Further, the button component 131 is made of steel, is composed of a head portion 131a and a shaft portion 131b connected to the head portion 131a, and has a substantially T-shaped cross section in the axial direction.

上部電極１０１は、ボタン部品１３１の頭部１３１ａが当接する第１当接面１１１を備える。第１当接面１１１は、１つの平面から構成されている。第１当接面１１１は、例えば、平面視で頭部１３１ａが全て収まる範囲以上の大きさとすることができる。頭部１３１ａは、例えば、平面視の形状が、直径１２ｍｍ程度の円である。第１当接面１１１は、この面積より大きいものとすることができる。また、上部電極１０１の外径は、第１当接面１１１の直径より大きいものとすることができる。例えば、上部電極１０１は、外径１３ｍｍ程度とすることができる。 The upper electrode 101 includes a first contact surface 111 with which the head 131a of the button component 131 comes into contact. The first contact surface 111 is composed of one plane. The first contact surface 111 may have a size larger than or equal to a range in which all the head 131a can be accommodated in a plan view, for example. The head 131a is, for example, a circle having a plan view shape of about 12 mm in diameter. The first contact surface 111 can be larger than this area. Further, the outer diameter of the upper electrode 101 can be larger than the diameter of the first contact surface 111. For example, the upper electrode 101 can have an outer diameter of about 13 mm.

下部電極１０２は、第１部品１３２が当接する第２当接面１２１を備える。第２当接面１２１は、１つの平面から構成されている。上部電極１０１の第１当接面１１１と下部電極１０２の第２当接面１２１とは、互いに、面と向かい合って配置されている。第１当接面１１１と第２当接面１２１とは、互いに平行な関係とされている。下部電極１０２は、上部電極１０１に対して大地の側に配置されている。 The lower electrode 102 includes a second contact surface 121 with which the first component 132 contacts. The second contact surface 121 is composed of one flat surface. The first contact surface 111 of the upper electrode 101 and the second contact surface 121 of the lower electrode 102 are arranged so as to face each other. The first contact surface 111 and the second contact surface 121 are in a parallel relationship with each other. The lower electrode 102 is arranged on the ground side with respect to the upper electrode 101.

電源１０３は、 上部電極１０１、下部電極１０２がそれぞれ接続されている。ボタン部品１３１の先端部１３１ｃが第１部品１３２と接触した時に、電源１０３により、上部電極１０１と下部電極１０２との間を通電状態とする。これにより、先端部１３１ｃと第１部品１３２との接触箇所を通電加熱して、溶接（抵抗スポット溶接）する。溶接は、交流溶接、直流溶接、サーボ溶接などとすることができる。 The upper electrode 101 and the lower electrode 102 are connected to the power supply 103, respectively. When the tip 131c of the button component 131 comes into contact with the first component 132, the power supply 103 energizes the space between the upper electrode 101 and the lower electrode 102. As a result, the contact point between the tip portion 131c and the first component 132 is energized and heated for welding (resistance spot welding). Welding can be AC welding, DC welding, servo welding, or the like.

加圧機構１０４は、上部電極１０１と下部電極１０２との距離が小さくなるように、上部電極１０１と下部電極１０２との間に力を加える。例えば、加圧機構１０４は、上部電極１０１を、下部電極１０２の側に押し下げることで、上部電極１０１と下部電極１０２との間に力を加える。 The pressurizing mechanism 104 applies a force between the upper electrode 101 and the lower electrode 102 so that the distance between the upper electrode 101 and the lower electrode 102 becomes smaller. For example, the pressurizing mechanism 104 applies a force between the upper electrode 101 and the lower electrode 102 by pushing the upper electrode 101 toward the lower electrode 102.

また、この接合装置は、頭部１３１ａを第１当接面１１１に吸着させる固定機構１０５を備える。固定機構１０５は、第１当接面１１１に開口１０６を備えて上部電極１０１に形成された空気を流通可能な空気通路１０７と、空気通路１０７に接続された負圧機構１０８とを備える。固定機構１０５は、負圧機構１０８により空気通路１０７から空気を吸引することで、頭部１３１ａを第１当接面１１１に吸着させる。また、この接合装置は、第１当接面１１１の周囲に形成され、第１当接面１１１に吸着した頭部１３１ａの周囲を囲う枠１０９を備える。 Further, this joining device includes a fixing mechanism 105 that attracts the head 131a to the first contact surface 111. The fixing mechanism 105 includes an air passage 107 formed in the upper electrode 101 having an opening 106 in the first contact surface 111 and capable of flowing air, and a negative pressure mechanism 108 connected to the air passage 107. The fixing mechanism 105 attracts the head 131a to the first contact surface 111 by sucking air from the air passage 107 by the negative pressure mechanism 108. Further, this joining device includes a frame 109 formed around the first contact surface 111 and surrounding the circumference of the head 131a adsorbed on the first contact surface 111.

枠１０９は、下部電極１０２の方向の、第１当接面１１１からの高さが、頭部１３１ａの厚さより低い状態とすることが重要である。例えば、上述した枠１０９の高さは、頭部１３１ａの厚さの半分程度とすることができる。この状態であれば、枠１０９の存在により、ボタン部品１３１を第２部品１３３へ正常に押し込めず、例えば、頭部１３１ａの下面と第２部品１３３との間に隙間が形成されるなどの問題が発生することがない。 It is important that the height of the frame 109 in the direction of the lower electrode 102 from the first contact surface 111 is lower than the thickness of the head 131a. For example, the height of the frame 109 described above can be about half the thickness of the head 131a. In this state, due to the presence of the frame 109, the button component 131 cannot be normally pushed into the second component 133, and for example, a gap is formed between the lower surface of the head 131a and the second component 133. Does not occur.

上述した接合装置を用いることで、次に示すような、よく知られた接合が実施できる。まず、固定機構１０５（負圧機構１０８）を動作させ、ボタン部品１３１を第１当接面１１１に吸着して固定する。例えば、ボタン部品１３１の頭部１３１ａを、枠１０９に嵌合させ、頭部１３１ａの上面を第１当接面１１１に当接させる。この、ボタン部品供給状態で、負圧機構１０８を動作させ、第１当接面１１１と頭部１３１ａの上面との間の空間の空気を、この空間に開口１０６を介して連通する空気通路１０７により排気し、上記空間を負圧の状態とする。これにより、ボタン部品１３１は、大気圧により第１当接面１１１に押し付けられ、ボタン部品１３１が第１当接面１１１に固定される。 By using the above-mentioned joining device, the following well-known joining can be performed. First, the fixing mechanism 105 (negative pressure mechanism 108) is operated to attract and fix the button component 131 to the first contact surface 111. For example, the head 131a of the button component 131 is fitted into the frame 109, and the upper surface of the head 131a is brought into contact with the first contact surface 111. In this button component supply state, the negative pressure mechanism 108 is operated, and the air in the space between the first contact surface 111 and the upper surface of the head 131a is communicated to this space through the opening 106 through the air passage 107. To exhaust the air, and put the above space in a negative pressure state. As a result, the button component 131 is pressed against the first contact surface 111 by atmospheric pressure, and the button component 131 is fixed to the first contact surface 111.

この状態において、ボタン部品１３１の軸部１３１ｂは、第１当接面１１１の平面に対して垂直な方向を向くものとなる。この状態で、重ねて配置されている第１部品１３２と第２部品１３３とを、図示しない移動装置で移動させ、溶接箇所をボタン部品１３１の箇所（下部）に配置させる。このとき、第１当接面１１１および第２当接面１２１に対し、重ねて配置されている第１部品１３２および第２部品１３３の平面が、互いに平行な状態となるように配置する。この状態とすることで、軸部１３１ｂは、第２部品１３３の平面に対して垂直な状態となる。また、ボタン部品１３１は、第１当接面１１１に吸着されているので、位置ずれが発生しない。 In this state, the shaft portion 131b of the button component 131 faces in a direction perpendicular to the plane of the first contact surface 111. In this state, the first component 132 and the second component 133, which are arranged in an overlapping manner, are moved by a moving device (not shown), and the welded portion is arranged at the portion (lower part) of the button component 131. At this time, the planes of the first component 132 and the second component 133, which are arranged so as to overlap the first contact surface 111 and the second contact surface 121, are arranged so as to be parallel to each other. In this state, the shaft portion 131b is in a state perpendicular to the plane of the second component 133. Further, since the button component 131 is attracted to the first contact surface 111, misalignment does not occur.

次いで、頭部１３１ａに当接する上部電極１０１と、第１部品１３２の下側に配置されて第１部品１３２に当接する下部電極１０２との間に力を加えることで、ボタン部品１３１に圧力を加えて、第２部品１３３の表面側からボタン部品１３１の軸部１３１ｂを軸方向に押し込む。次に、軸部１３１ｂの先端部１３１ｃを第１部品１３２に当接させ、先端部１３１ｃと第１部品１３２とを抵抗スポット溶接により溶接する。 Next, pressure is applied to the button component 131 by applying a force between the upper electrode 101 that abuts on the head 131a and the lower electrode 102 that is arranged below the first component 132 and abuts on the first component 132. In addition, the shaft portion 131b of the button component 131 is pushed in the axial direction from the surface side of the second component 133. Next, the tip 131c of the shaft 131b is brought into contact with the first component 132, and the tip 131c and the first component 132 are welded by resistance spot welding.

なお、上部電極１０１に、冷却媒体を流す配管から構成される液冷による冷却機構を設ける（内蔵する）ことができる。冷却機構を設けることで、上部電極１０１が効率的に冷却でき、所望とする高い接合強度を得ることができ、また、連続した溶接を実施する中で、各々の溶接工程の通電加熱をする前段階で、上部電極１０１を十分に冷却することができる。 The upper electrode 101 may be provided (built-in) with a liquid cooling cooling mechanism including a pipe through which a cooling medium flows. By providing the cooling mechanism, the upper electrode 101 can be efficiently cooled, the desired high bonding strength can be obtained, and during continuous welding, before energization heating in each welding step is performed. In the step, the upper electrode 101 can be sufficiently cooled.

この種の接合では、溶接により形成される溶融凝固した部分（ナゲット）の形成や、連続した溶接の迅速な実施のために、冷却することが重要となる。例えば、ボタン部品の先端部と鋼板とを、抵抗スポット溶接により溶接してナゲットを形成した後、適切に冷却することで、所望とする大きさでナゲットを形成し、高い接合強度を得ることが重要となる。このためには、例えば、所望の時間、通電加熱をした後、上部電極を冷却することが有効である。また、ボタン部品の先端部と鋼板とが接触する前に加熱がなされることを防ぐために、連続した溶接を実施する中で、各々の溶接工程の通電加熱をする前段階では、上部電極が十分に冷却されていることが重要となる。 In this type of joining, cooling is important for the formation of melt-solidified parts (nuggets) formed by welding and for the rapid execution of continuous welding. For example, the tip of a button component and a steel plate are welded by resistance spot welding to form a nugget, and then appropriately cooled to form a nugget of a desired size and obtain high bonding strength. It becomes important. For this purpose, for example, it is effective to cool the upper electrode after energizing and heating for a desired time. In addition, in order to prevent heating before the tip of the button component comes into contact with the steel plate, the upper electrode is sufficient in the stage before energizing and heating each welding process during continuous welding. It is important that it is cooled to.

以上に説明したように、本発明によれば、上部電極に固定機構を設けたので、位置ずれがない状態で、ボタン部品を電極に配置することができるようになる。 As described above, according to the present invention, since the fixing mechanism is provided on the upper electrode, the button component can be arranged on the electrode without any misalignment.

なお、本発明は以上に説明した実施の形態に限定されるものではなく、本発明の技術的思想内で、当分野において通常の知識を有する者により、多くの変形および組み合わせが実施可能であることは明白である。 The present invention is not limited to the embodiments described above, and many modifications and combinations can be carried out by a person having ordinary knowledge in the art within the technical idea of the present invention. That is clear.

１０１…上部電極、１０２…下部電極、１０３…電源、１０４…加圧機構、１０５…固定機構、１０６…開口、１０７…空気通路、１０８…負圧機構、１０９…枠、１１１…第１当接面、１２１…第２当接面、１３１…ボタン部品、１３１ａ…頭部、１３１ｂ…軸部、１３１ｃ…先端部、１３２…第１部品、１３３…第２部品。 101 ... upper electrode, 102 ... lower electrode, 103 ... power supply, 104 ... pressurizing mechanism, 105 ... fixing mechanism, 106 ... opening, 107 ... air passage, 108 ... negative pressure mechanism, 109 ... frame, 111 ... first contact Surface, 121 ... Second contact surface, 131 ... Button part, 131a ... Head, 131b ... Shaft part, 131c ... Tip part, 132 ... First part, 133 ... Second part.

Claims (3)

鋼材からなる第１部品の上に、鋼材とは異なる材料から構成された第２部品を重ね、
頭部および前記頭部に接続する軸部から構成されて軸方向断面が略Ｔ字状の鋼からなるボタン部品の前記頭部に当接する上部電極と、前記第１部品の側に配置されて前記第１部品に当接する下部電極との間に力を加えることで、前記ボタン部品に圧力を加えて、前記第２部品の表面側から前記ボタン部品の前記軸部を軸方向に押し込み、
前記軸部の先端部を前記第１部品に当接させ、前記先端部と前記第１部品とを抵抗スポット溶接により溶接する接合方法の実施に使用する接合装置であって、
前記ボタン部品の前記頭部が当接する第１当接面を備える前記上部電極と、
前記上部電極に対して大地の側に配置され、前記第１部品が当接する第２当接面を備える前記下部電極と、
前記上部電極、前記下部電極がそれぞれ接続され、前記ボタン部品の前記先端部が前記第１部品と接触した時に、前記上部電極と前記下部電極との間が通電して、前記先端部と前記第１部品との接触箇所を加熱するための電源と、
前記上部電極と前記下部電極との距離が小さくなるように、前記上部電極と前記下部電極との間に力を加える加圧機構と、
前記頭部を前記第１当接面に吸着させる固定機構と
を備え、
前記第１当接面と前記第２当接面とは、互いに向かい合って配置され、
前記第１当接面の周囲に形成され、前記第１当接面に吸着した前記頭部の周囲を囲う枠を備え、
前記枠は、前記下部電極の方向の第１当接面からの高さが、前記頭部の厚さより低くされていることを特徴とする接合装置。 On top of the first part made of steel, the second part made of a material different from steel is layered.
An upper electrode abutting on the head of a button component composed of a head and a shaft portion connected to the head and having a substantially T-shaped cross section in the axial direction, and arranged on the side of the first component. By applying a force between the lower electrode and the lower electrode that abuts on the first component, pressure is applied to the button component to push the shaft portion of the button component in the axial direction from the surface side of the second component.
A joining device used for carrying out a joining method in which the tip portion of the shaft portion is brought into contact with the first component and the tip portion and the first component are welded by resistance spot welding.
The upper electrode having a first contact surface with which the head of the button component abuts,
The lower electrode, which is arranged on the ground side with respect to the upper electrode and has a second contact surface with which the first component abuts,
When the upper electrode and the lower electrode are connected to each other and the tip portion of the button component comes into contact with the first component, electricity is applied between the upper electrode and the lower electrode, and the tip portion and the first portion are energized. 1 Power supply for heating the contact points with parts,
A pressurizing mechanism that applies a force between the upper electrode and the lower electrode so that the distance between the upper electrode and the lower electrode becomes smaller.
A fixing mechanism for adsorbing the head to the first contact surface is provided.
The first contact surface and the second contact surface are arranged so as to face each other .
A frame formed around the first contact surface and surrounding the head surface adsorbed on the first contact surface is provided.
The frame is a joining device characterized in that the height from the first contact surface in the direction of the lower electrode is lower than the thickness of the head. 請求項１記載の接合装置において、
前記加圧機構は、前記上部電極を、前記下部電極の側に押し下げることで、前記上部電極と前記下部電極との間に力を加えることを特徴とする接合装置。 In the joining apparatus according to claim 1,
The pressurizing mechanism is a joining device characterized in that a force is applied between the upper electrode and the lower electrode by pushing the upper electrode toward the lower electrode. 請求項１または２記載の接合装置において、
前記固定機構は、前記第１当接面に開口を備えて前記上部電極に形成された空気を流通可能な空気通路と、前記空気通路に接続された負圧機構とを備え、
前記負圧機構により前記空気通路から前記空気を吸引することで、前記頭部を前記第１当接面に吸着させる
ことを特徴とする接合装置。 In the joining apparatus according to claim 1 or 2.
The fixing mechanism includes an air passage having an opening in the first contact surface and capable of flowing air formed in the upper electrode, and a negative pressure mechanism connected to the air passage.
A joining device characterized in that the head is adsorbed on the first contact surface by sucking the air from the air passage by the negative pressure mechanism.
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Citations (2)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
JPH07214338A (en) * 1994-01-28 1995-08-15 Nippon Steel Corp Joining method of ferrous metal material and aluminum metal material
JP2007000930A (en) * 2005-05-27 2007-01-11 Yoshitaka Aoyama Method and equipment for welding small-diameter shaft-shaped component, and small-diameter shaft-shaped component

Patent Citations (2)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
JPH07214338A (en) * 1994-01-28 1995-08-15 Nippon Steel Corp Joining method of ferrous metal material and aluminum metal material
JP2007000930A (en) * 2005-05-27 2007-01-11 Yoshitaka Aoyama Method and equipment for welding small-diameter shaft-shaped component, and small-diameter shaft-shaped component

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