JP3792693B2 - Battery spot welding equipment - Google Patents

Battery spot welding equipment Download PDF

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JP3792693B2
JP3792693B2 JP2003401917A JP2003401917A JP3792693B2 JP 3792693 B2 JP3792693 B2 JP 3792693B2 JP 2003401917 A JP2003401917 A JP 2003401917A JP 2003401917 A JP2003401917 A JP 2003401917A JP 3792693 B2 JP3792693 B2 JP 3792693B2
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electrodes
pair
welding
battery
electrode
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JP2004074290A (en
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圭司 和田
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NAG SYSTEM CO., LTD.
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Description

本発明は、電池のスポット溶接装置に関するものである。 The present invention relates to a spot welding apparatus for a battery .

スポット溶接（抵抗溶接）を行う従来の溶接装置としては、例えば、ワーク設置位置にセットされたワークに接近・離間可能にかつ相互に平行に設けられた一対の棒状電極を有する溶接ヘッド部を備え、この一対の電極がワークに圧接して溶接するものが公知である。例えば、モータの巻線部の巻線端部を端子にスポット溶接して電気的に接続する場合な
どに使用されている。 As a conventional welding apparatus for performing spot welding (resistance welding), for example, a welding head portion having a pair of rod-like electrodes provided in parallel with each other so as to be able to approach and separate from a workpiece set at a workpiece installation position is provided. It is known that this pair of electrodes is welded while being pressed against a workpiece. For example, it is used when a winding end of a winding part of a motor is electrically connected by spot welding to a terminal.

また、溶接ヘッド部に設けられた平行な一対の棒状電極がワークに圧接して、２箇所ずつ抵抗溶接を行うものがあるが、ワークによっては例えば横並びに溶接する部位と縦並びに溶接する部位があり、この場合は溶接ヘッド部のがたつきによる溶接精度の悪影響が懸念されるため溶接ヘッド側は回転させず、ワーク側を電極に対して90°回転させるようにしなければならなかった。即ち、ワーク設置位置にワークを回転させる機構が必要であった。
そこで、本発明は、上述の課題を解決し、簡単な構造にて高精度に溶接することができる電池のスポット溶接装置を提供することを目的とする。 In addition, a pair of parallel rod-shaped electrodes provided on the welding head portion are pressed against the workpiece to perform resistance welding two by two, but depending on the workpiece, for example, a portion to be welded sideways and a portion to be welded vertically In this case, since there is a concern about the adverse effect of the welding accuracy due to the rattling of the welding head portion, the welding head side must not be rotated, and the work side must be rotated by 90 ° with respect to the electrode. That is, a mechanism for rotating the workpiece at the workpiece installation position is required.
Accordingly, an object of the present invention is to solve the above-described problems and to provide a spot welding apparatus for a battery that can be welded with high accuracy with a simple structure.

本発明に係る電池のスポット溶接装置は、電池のプラス極とマイナス極とをスポット溶接する電池のスポット溶接装置に於て、所定中心角度で間欠的に回転可能な回転軸を有する回転駆動手段と、上記回転軸の回転軸心を中心として対称にかつ平行にかつ上記回転軸心の近傍に配設される一対の棒状電極を有すると共に回転軸に取付けられた溶接ヘッド部とを備え、上記一対の電極を２個の電池のプラス極とマイナス極とに金属片を介して相対的に接近圧接・離間させかつ所定中心角度で間欠的に回転して溶接するように構成している。 A battery spot welding apparatus according to the present invention is a battery spot welding apparatus for spot welding a positive electrode and a negative electrode of a battery, and a rotation driving means having a rotation shaft that can rotate intermittently at a predetermined central angle. A pair of rod-like electrodes disposed symmetrically and in parallel around the rotation axis of the rotation shaft and in the vicinity of the rotation axis, and a welding head portion attached to the rotation shaft. These electrodes are relatively close-contacted / separated to / from the positive and negative electrodes of the two batteries via metal pieces, and are intermittently rotated and welded at a predetermined center angle.

かつ、溶接ヘッド部が、各電極を保持する一対の電極ホルダと、回転軸に取付けられた連結部と、該連結部と各電極ホルダとの間に介装されると共に上記各電極の上記電池のプラス極とマイナス極への押圧力を夫々調整する圧力調整機構と、を有する。 And a welding head part is interposed between a pair of electrode holder holding each electrode, a connection part attached to a rotating shaft, and the connection part and each electrode holder, and the battery of each electrode And a pressure adjusting mechanism for adjusting the pressing force to the plus and minus poles .

本発明の電池のスポット溶接装置によれば、溶接ヘッド部を回転軸心廻りに所定中心角度でかつ間欠的に回転させることができる。即ち、ワークに対して一対の電極の向きを変えながら溶接することができ、ワーク側においてはワークを回転させる機構が不要となり、溶接装置の周辺機器の簡素化を行うことができる。また、溶接ヘッド部にがたつきを生じさせずスムースに回転させることができ、高精度なスポット溶接が実現できる。 According to the spot welding apparatus for a battery of the present invention, the welding head can be intermittently rotated around the rotation axis at a predetermined center angle. That is, welding can be performed while changing the direction of the pair of electrodes with respect to the workpiece, and a mechanism for rotating the workpiece is not necessary on the workpiece side, and peripheral devices of the welding apparatus can be simplified. Further, the welding head portion can be smoothly rotated without causing rattling, and high-precision spot welding can be realized.

図１と図２は、本発明の溶接装置の実施の一形態を示す一部断面平面図と一部断面側面図である。この溶接装置は、所定中心角度で間欠的に回転可能な回転軸36を有する回転駆動手段37と、回転軸36の回転軸心Ｑを中心として平行に配設される一対の棒状電極１，１を有すると共に回転軸36に取付けられた溶接ヘッド部２とを備え、一対の電極１，１をワークに相対的に接近圧接・離間させかつ所定中心角度で間欠的に回転して溶接するように構成されている。   1 and 2 are a partial cross-sectional plan view and a partial cross-sectional side view showing an embodiment of the welding apparatus of the present invention. This welding apparatus includes a rotation drive means 37 having a rotation shaft 36 that can be intermittently rotated at a predetermined center angle, and a pair of rod-like electrodes 1 and 1 disposed in parallel around a rotation axis Q of the rotation shaft 36. And a welding head portion 2 attached to the rotary shaft 36, and a pair of electrodes 1 and 1 are relatively pressed against and separated from the work and intermittently rotated at a predetermined center angle for welding. It is configured.

具体的に説明すると、回転駆動手段37は、基台38の上面に平行に立設された一対の鉛直壁39，39と、この一対の鉛直壁39，39に片持梁状に回転自在に取付けられた上記回転軸36と、基台38端部側の一方の鉛直壁39に固着されたモータ40と、モータ40のシャフト40ａからのトルクを回転軸36に伝達するプーリやベルト等から成る回転力伝達機構41と、を備えている。さらに詳しくは、他方の鉛直壁39には回転軸36を挿通させる筒体42が片持梁状に保持されており、この筒体42にて回転軸36が軸受57，57を介して支持されている。   More specifically, the rotation drive means 37 includes a pair of vertical walls 39, 39 standing in parallel with the upper surface of the base 38, and a pair of vertical walls 39, 39 that can rotate freely in a cantilever manner. The rotating shaft 36 attached, a motor 40 fixed to one vertical wall 39 on the end side of the base 38, and a pulley, a belt, etc. for transmitting torque from the shaft 40a of the motor 40 to the rotating shaft 36. And a rotational force transmission mechanism 41. More specifically, a cylindrical body 42 through which the rotary shaft 36 is inserted is held in a cantilever shape on the other vertical wall 39, and the rotary shaft 36 is supported by the cylindrical body 42 via bearings 57 and 57. ing.

溶接ヘッド部２は、上記一対の棒状電極１，１と、各電極１，１を保持する一対の電極ホルダ43，43と、回転軸36に取付けられた連結部44と、連結部44と各電極ホルダ43，43と
の間に介装されると共に各電極１，１のワークへの押圧力を夫々調整する圧力調整機構22，22と、を有している。 The welding head portion 2 includes the pair of rod-shaped electrodes 1, 1, a pair of electrode holders 43, 43 that hold the electrodes 1, 1, a connecting portion 44 attached to the rotating shaft 36, a connecting portion 44, Pressure adjusting mechanisms 22 and 22 are provided between the electrode holders 43 and 43 and adjust the pressing force of the electrodes 1 and 1 to the workpiece.

図１〜図３に示すように、電極ホルダ43は略直方体形であり、一対の電極ホルダ43，43は相互に接触状にかつ一文字状に並んで配設される。そして、各電極ホルダ43，43の接触面寄りに各電極１，１が平行に取付けられている。連結部44は、平面視矩形状の部材から成り、その一端側に回転軸36の先端がボルト・ナット結合にて固着されると共に、回転軸心Ｑを中心としてその両側に平行に一対のスライド杆30，30がスライド自在に挿通される。   As shown in FIGS. 1 to 3, the electrode holder 43 has a substantially rectangular parallelepiped shape, and the pair of electrode holders 43, 43 are arranged in contact with each other and arranged in a single character. The electrodes 1 and 1 are attached in parallel near the contact surfaces of the electrode holders 43 and 43. The connecting portion 44 is composed of a rectangular member in plan view, and the tip of the rotating shaft 36 is fixed to one end side thereof by bolt / nut coupling, and a pair of slides parallel to both sides of the rotating shaft center Q.杆 30, 30 are slidably inserted.

圧力調整機構22は、連結部44の貫孔に軸受を介してスライド自在に挿通された上記スライド杆30と、連結部44の貫孔の開口端部に取付けられた筒部24と、筒部24の開口端部に固着されたナット部25と、筒部24の端部に外嵌されたノブ28と、ナット部25に螺合すると共に基端がノブ28に一体状に取付けられた雄ネジ部27と、雄ネジ部27の先端とスライド杆30の基端に各々取付けられたバネ台座26，29と、バネ台座26，29間に設けられた圧縮バネ31と、を備える。そして、スライド杆30の先端に取付部材45を介して電極ホルダ43が取付けられている。この圧力調整機構22は、各電極１，１に対して各々設けられている。   The pressure adjusting mechanism 22 includes the slide rod 30 slidably inserted into the through hole of the connecting portion 44 via a bearing, the cylindrical portion 24 attached to the opening end of the through hole of the connecting portion 44, and the cylindrical portion. The nut portion 25 fixed to the open end of the cylinder 24, the knob 28 externally fitted to the end of the cylinder portion 24, and the male screwed into the nut portion 25 and the base end integrally attached to the knob 28 A screw base 27; spring bases 26 and 29 attached to the distal end of the male screw part 27 and the base end of the slide rod 30; and a compression spring 31 provided between the spring bases 26 and 29. An electrode holder 43 is attached to the tip of the slide rod 30 via an attachment member 45. The pressure adjusting mechanism 22 is provided for each of the electrodes 1 and 1.

なお、図２に示すように、基台38を回転軸心Ｑ方向に往復動させる往復動手段46を設けるのも良い。この往復動手段46としては、例えば、リニアガイド47…を介して基台38を軸心Ｑ方向にスライド自在に支持する支持台48と、支持台48の上面側にかつ軸心Ｑと平行に回転自在に設けられるスクリューシャフト49と、支持台48に固設されると共にスクリューシャフト49を回転させるモータ50と、スクリューシャフト49に螺合すると共に基台38に固着されるナット部51と、を備えた構成とするも良い。あるいは、シリンダの伸縮動作にて基台38を往復動させる構成であっても良い。   2, reciprocating means 46 for reciprocating the base 38 in the direction of the rotation axis Q may be provided. As the reciprocating means 46, for example, a support base 48 that supports a base 38 slidably in the direction of the axis Q via linear guides 47, and the upper surface side of the support base 48 and in parallel with the axis Q. A screw shaft 49 that is rotatably provided, a motor 50 that is fixed to the support base 48 and rotates the screw shaft 49, and a nut portion 51 that is screwed to the screw shaft 49 and fixed to the base 38. It is good also as a structure provided. Or the structure which reciprocates the base 38 by the expansion-contraction operation | movement of a cylinder may be sufficient.

次に、図１〜図６を参照しつつこの溶接装置の作用について説明する。この溶接装置では、溶接ヘッド部２を間欠的にかつ回転軸心Ｑ廻りに所定中心角度で回転させることができるため、ワークに対する一対の電極１，１の向きを変えることができる。例えば、図４（イ）に示すように、２個の電池Ｂ，Ｂのプラス極53とマイナス極54を金属片52にてスポット溶接する場合、先ず、例えばロボットアーム等のワーク保持移動手段55にて保持された電池Ｂ，Ｂが、溶接装置のワーク設置位置にセットされる。なお、電池Ｂ，Ｂに乗せた金属片52が落ちないよう接着等の方法により軽く貼付けられる。   Next, the effect | action of this welding apparatus is demonstrated, referring FIGS. In this welding apparatus, the welding head portion 2 can be intermittently rotated around the rotation axis Q at a predetermined center angle, so that the direction of the pair of electrodes 1 and 1 relative to the workpiece can be changed. For example, as shown in FIG. 4 (a), when spot welding the positive electrode 53 and the negative electrode 54 of two batteries B, B with a metal piece 52, first, a work holding / moving means 55 such as a robot arm, for example. The batteries B and B held in step 1 are set at the work installation position of the welding apparatus. It should be noted that the metal pieces 52 placed on the batteries B and B are lightly attached by a method such as adhesion so that the metal pieces 52 are not dropped.

次に、図４（ロ）に示す如く、往復動手段46にて基台38が回転軸心Ｑ方向に前進することにより、溶接ヘッド部２の一対の電極１，１が金属片52の上（表面）から一方の電池Ｂのプラス極53に圧接する。そして、各電極１，１を通電することにより金属片52とプラス極53とがスポット溶接にて電気的に接続される。   Next, as shown in FIG. 4 (b), the base 38 is advanced in the direction of the rotation axis Q by the reciprocating means 46, so that the pair of electrodes 1, 1 of the welding head portion 2 is placed on the metal piece 52. From the (surface), the positive electrode 53 of one battery B is pressed. The metal piece 52 and the positive electrode 53 are electrically connected by spot welding by energizing the electrodes 1 and 1.

その後、溶接ヘッド部２を後退させ、かつ、図３（イ）（ロ）に示す如く、回転駆動手段37にて回転軸心Ｑ廻りに90°回転させると共に、図５（イ）に示す如く、ワーク保持移動手段55にて電池Ｂ，Ｂを軸心Ｑと直交する方向に所定距離移動させる。そして、図５（ロ）に示すように、再び溶接ヘッド部２を前進させることにより、一対の電極１，１が金属片52の上（表面）から他方の電池Ｂのマイナス極54に圧接する。そして、各電極１，１を通電することにより金属片52とマイナス極54とがスポット溶接にて電気的に接続される。なお、一対の電極１，１のワークへの押圧力は、各圧力調整機構22，22によって予め調整されている。   Thereafter, the welding head portion 2 is moved backward, and as shown in FIGS. 3 (A) and 3 (B), it is rotated by 90 ° around the rotation axis Q by the rotation driving means 37, and as shown in FIG. 5 (A). Then, the work holding and moving means 55 moves the batteries B and B by a predetermined distance in the direction orthogonal to the axis Q. Then, as shown in FIG. 5B, the welding head portion 2 is advanced again, so that the pair of electrodes 1 and 1 comes into pressure contact with the negative electrode 54 of the other battery B from the top (surface) of the metal piece 52. . Then, when the electrodes 1 and 1 are energized, the metal piece 52 and the negative electrode 54 are electrically connected by spot welding. Note that the pressing force of the pair of electrodes 1 and 1 to the workpiece is adjusted in advance by the pressure adjusting mechanisms 22 and 22.

このようにして、図６に示すように、２個の電池Ｂ，Ｂのプラス極53とマイナス極54とが金属片52を介して電気的に接続されるが、このとき、プラス極53側の溶接部56，56は横
並びに形成されると共に、マイナス極54側の溶接部56，56はそれよりも90°回転した縦並びとなって形成される。このように、ワークによっては溶接部の向きを変更する場合があるが、本発明ではワークを回転することなく溶接ヘッド部２側を所定中心角度に、かつ、がたつかせずスムースに回転して溶接することができる。 In this way, as shown in FIG. 6, the positive electrode 53 and the negative electrode 54 of the two batteries B and B are electrically connected via the metal piece 52. The welded portions 56 and 56 are formed side by side, and the welded portions 56 and 56 on the negative electrode 54 side are formed in a vertical arrangement rotated by 90 °. In this way, depending on the workpiece, the direction of the welded portion may be changed, but in the present invention, the welding head portion 2 side is rotated smoothly at a predetermined center angle without rattling, without rotating the workpiece. Can be welded.

なお、本発明は上述の実施の形態に限定されず、図１〜図６で説明した溶接装置に於て、溶接ヘッド部２の回転角度は多段階に設定可能であり、溶接箇所が多数必要なワークに電極１，１の向きを変えながら溶接することができる。   The present invention is not limited to the above-described embodiment, and in the welding apparatus described with reference to FIGS. 1 to 6, the rotation angle of the welding head portion 2 can be set in multiple stages, and a large number of welding locations are required. It can be welded to a simple workpiece while changing the direction of the electrodes 1 and 1.

以上のように本発明によれば、電池のプラス極とマイナス極とをスポット溶接する電池のスポット溶接装置に於て、所定中心角度で間欠的に回転可能な回転軸36を有する回転駆動手段37と、回転軸36の回転軸心Ｑを中心として対称にかつ平行にかつ回転軸心Ｑの近傍に配設される一対の棒状電極１，１を有すると共に回転軸36に取付けられた溶接ヘッド部２とを備え、一対の電極１，１を２個の電池Ｂ，Ｂのプラス極53とマイナス極54とに金属片52と介して相対的に接近圧接・離間させかつ所定中心角度で間欠的に回転して溶接するように構成したものであるため、溶接ヘッド部２を回転軸心Ｑ廻りに所定中心角度でかつ間欠的に回転させることができる。
即ち、ワークに対して一対の電極１，１の向きを変えながら溶接することができ、ワーク側においてはワークを回転させる機構が不要となり、溶接装置の周辺機器の簡素化を行うことができる。また、溶接ヘッド部２にがたつきを生じさせずスムースに回転させることができ、高精度なスポット溶接が実現できる。 As described above, according to the present invention, in the battery spot welding apparatus for spot welding the positive electrode and the negative electrode of the battery, the rotation driving means 37 having the rotating shaft 36 that can rotate intermittently at a predetermined center angle. And a pair of rod-like electrodes 1 and 1 disposed symmetrically and in parallel around the rotation axis Q of the rotation shaft 36 and in the vicinity of the rotation axis Q and attached to the rotation shaft 36 2, the pair of electrodes 1, 1 are relatively close to each other by press-contacting / separating between the positive electrode 53 and the negative electrode 54 of the two batteries B and B through the metal piece 52 and intermittently at a predetermined center angle. Therefore, the welding head portion 2 can be intermittently rotated around the rotation axis Q at a predetermined center angle.
That is, welding can be performed while changing the direction of the pair of electrodes 1 and 1 with respect to the workpiece, and a mechanism for rotating the workpiece is not required on the workpiece side, and peripheral devices of the welding apparatus can be simplified. Moreover, the welding head 2 can be smoothly rotated without causing rattling, and high-precision spot welding can be realized.

かつ、溶接ヘッド部２が、各電極１，１を保持する一対の電極ホルダ43，43と、回転軸36に取付けられた連結部44と、該連結部44と各電極ホルダ43，43との間に介装されると共に上記各電極１，１の電池Ｂ，Ｂのプラス極53とマイナス極54への押圧力を夫々調整する圧力調整機構22，22と、を有するため、ワークの種類（材質）や必要とされる溶接強度等に応じて、各電極１，１のワークへの押圧力を調整することができ、より高精度にスポット溶接することができる。 In addition , the welding head portion 2 includes a pair of electrode holders 43 and 43 for holding the electrodes 1 and 1, a connecting portion 44 attached to the rotary shaft 36, and the connecting portion 44 and the electrode holders 43 and 43. And the pressure adjustment mechanisms 22 and 22 for adjusting the pressing force of the batteries B and B of the electrodes 1 and 1 to the positive electrode 53 and the negative electrode 54 , respectively. The pressing force of the electrodes 1 and 1 on the work can be adjusted according to the material) and the required welding strength, and spot welding can be performed with higher accuracy.

本発明の実施の一形態を示す一部断面平面図である。It is a partial cross section top view which shows one Embodiment of this invention. 一部断面側面図である。It is a partial cross section side view. 溶接ヘッドが回転する状態を示す説明図である。It is explanatory drawing which shows the state which a welding head rotates. 溶接状態を示す第１の作用説明図である。It is a 1st operation explanatory view showing a welding state. 溶接状態を示す第２の作用説明図である。It is the 2nd operation explanatory view showing a welding state. 溶接後のワークの溶接部位を示す正面図である。It is a front view which shows the welding site | part of the workpiece | work after welding.

符号の説明Explanation of symbols

１ 電極
２ 溶接ヘッド部
22 圧力調整機構
36 回転軸
37 回転駆動手段
43 電極ホルダ
44 連結部
52 金属片
53 プラス極
54 マイナス極
Ｂ 電池
Ｑ 回転軸心 1 Electrode 2 Welding head
22 Pressure adjustment mechanism
36 axis of rotation
37 Rotation drive means
43 Electrode holder
44 Connection
52 pieces of metal
53 plus pole
54 negative pole
B battery Q rotation axis

Claims (1)

電池のプラス極とマイナス極とをスポット溶接する電池のスポット溶接装置に於て、所定中心角度で間欠的に回転可能な回転軸（36）を有する回転駆動手段（37）と、上記回転軸（36）の回転軸心（Ｑ）を中心として対称にかつ平行にかつ上記回転軸心（Ｑ）の近傍に配設される一対の棒状電極（１)(１）を有すると共に回転軸（36）に取付けられた溶接ヘッド部（２）とを備え、上記一対の電極（１)(１）を２個の電池（Ｂ)(Ｂ）のプラス極（53）とマイナス極（54）とに金属片（52）を介して相対的に接近圧接・離間させかつ所定中心角度で間欠的に回転して溶接するように構成し、上記溶接ヘッド部（２）が、各電極（１)(１）を保持する一対の電極ホルダ（43)(43）と、回転軸（36）に取付けられた連結部（44）と、該連結部（44）と各電極ホルダ（43)(43）との間に介装されると共に上記各電極（１)(１）の上記電池（Ｂ)(Ｂ）のプラス極（53）とマイナス極（54）への押圧力を夫々調整する圧力調整機構（22)(22）と、を有することを特徴とする電池のスポット溶接装置。 In a battery spot welding apparatus for spot welding a positive electrode and a negative electrode of a battery, a rotary drive means (37) having a rotary shaft (36) that can be intermittently rotated at a predetermined center angle, and the rotary shaft ( 36) having a pair of rod-like electrodes (1) (1) disposed symmetrically and in parallel around the rotation axis (Q) and in the vicinity of the rotation axis (Q) and the rotation axis (36) A pair of electrodes (1) and (1) are connected to the positive electrode (53) and the negative electrode (54) of the two batteries (B) and (B). The welding head part (2) is constructed so as to be welded by relatively close pressure welding and separation through a piece (52) and intermittently rotating at a predetermined center angle. A pair of electrode holders (43) and (43), a connecting portion (44) attached to the rotating shaft (36), the connecting portion (44) and each electrode holder And the pressing force of each of the electrodes (1) (1) to the positive electrode (53) and the negative electrode (54) of the battery (B) (B). battery spot welding apparatus according to claim and respectively adjusted to the pressure adjustment mechanism (22) (22), to have a.
JP2003401917A 2003-12-01 2003-12-01 Battery spot welding equipment Expired - Lifetime JP3792693B2 (en)

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JP5111093B2 (en) * 2007-12-26 2012-12-26 日本アビオニクス株式会社 Parallel gap welding equipment

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