JP5380623B1 - 2-head resistance welding machine - Google Patents
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- JP5380623B1 JP5380623B1 JP2013091380A JP2013091380A JP5380623B1 JP 5380623 B1 JP5380623 B1 JP 5380623B1 JP 2013091380 A JP2013091380 A JP 2013091380A JP 2013091380 A JP2013091380 A JP 2013091380A JP 5380623 B1 JP5380623 B1 JP 5380623B1
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Abstract
【目的】プロジェクション溶接機の部品供給装置を含めた全体の設置の省スペース化を実現でき、溶接機本体の側方に備え付けられた部品供給装置が工場内の他の物と接触等して破損してしまうことを防止でき、部品供給装置により部品又はそれを保持する部材が溶接位置まで移動したかを作業者が容易に目視で確認できるプロジェクション溶接機等の抵抗溶接機を提供する。
【構成】溶接機本体の略中央に空洞部が形成されており、前記空洞部内には、ボルトやナットなどの溶接用部品を上部電極及び下部電極間の溶接位置に移動させ又は供給する部品供給装置が配置されている。また前記空洞部内に配置された部品供給装置は、溶接用部品又はこれを保持する保持部を、前記空洞部から作業者の居る方向に向かって移動させるものである。
【選択図】 図１[Purpose] Space saving of the entire installation including the parts supply device of the projection welding machine can be realized, and the parts supply device installed on the side of the welding machine main body is damaged due to contact with other things in the factory. There is provided a resistance welder such as a projection welder that can easily visually check whether a component or a member holding the component has been moved to a welding position by a component supply device.
[Structure] A cavity is formed in the approximate center of the main body of the welder. In the cavity, parts for welding such as bolts and nuts are moved or supplied to a welding position between the upper electrode and the lower electrode. The device is arranged. Moreover, the component supply apparatus arrange | positioned in the said cavity part moves the welding part or the holding part holding this toward the direction where an operator exists from the said cavity part.
[Selection] Figure 1
Description
本発明は、鋼板等のワークとナットやボルト等の部品とを上部電極と下部電極との間に挟み通電、加圧することによって上記部品をワークに溶接するプロジェクション溶接機等の抵抗溶接機に関する。 The present invention relates to a resistance welding machine such as a projection welding machine that welds a workpiece such as a steel plate and a component such as a nut and a bolt between an upper electrode and a lower electrode to energize and pressurize the component to the workpiece.
従来より、ナットやボルト等の部品を上部電極と下部電極との間のワーク上の所定位置（溶接位置）に供給するための部品供給装置を備えたプロジェクション溶接機等の抵抗溶接機が知られている。図１１は、このような部品供給装置を備えた従来のプロジェクション溶接機の一例を示す図である。図１１において、１はプロジェクション溶接機、２は溶接用ボルトを収容した供給源、３は溶接用ボルト等の部品を供給する部品供給装置、４は供給源２からのボルトを部品供給装置３に送るためのホース、５は上部電極（図示省略）を保持する上部電極ホルダ、６は下部電極（図示省略）を保持する下部電極ホルダ、７は前記上部電極ホルダ５を昇降させる昇降機構部、８は前記昇降機構部７のピストンロッドの下端に前記上部電極ホルダ５を取り付けるためのホルダ取付部、９は前記下部電極ホルダ６を支持するホルダ取付部、１０は足踏みスイッチである。 Conventionally, resistance welding machines such as a projection welding machine equipped with a parts supply device for supplying parts such as nuts and bolts to a predetermined position (welding position) on a workpiece between an upper electrode and a lower electrode are known. ing. FIG. 11 is a diagram showing an example of a conventional projection welding machine equipped with such a component supply apparatus. In FIG. 11, 1 is a projection welding machine, 2 is a supply source containing welding bolts, 3 is a component supply device for supplying parts such as welding bolts, 4 is a bolt from the supply source 2 to the component supply device 3 Hose for feeding, 5 is an upper electrode holder for holding an upper electrode (not shown), 6 is a lower electrode holder for holding a lower electrode (not shown), 7 is an elevating mechanism for raising and lowering the upper electrode holder 5, 8 Is a holder attaching portion for attaching the upper electrode holder 5 to the lower end of the piston rod of the elevating mechanism portion 7, 9 is a holder attaching portion for supporting the lower electrode holder 6, and 10 is a foot switch.
前記部品供給装置３は、供給源２からホース４を介して送られてくる溶接用ボルトを、溶接機１の上部電極ホルダ５の下端の上部電極と下部電極ホルダ６の上端の下部電極との間に、すなわち前記下部電極上にセットされたワーク上の溶接位置に、供給するものである。前記部品供給装置３は、溶接用ボルトを把持する把持部（チャック）３ａ、この把持部３ａを支持する供給ロッド、前記供給ロッドの伸縮を介して前記把持部３ａを上下電極間の溶接位置と溶接機１の側方の待機位置との間で往復移動させるシリンダ装置３ｂなどにより構成されている。前記把持部３ａが待機する待機位置の上方には前記ホース４の出口が臨んでいる。溶接に際しては、作業者がワーク（図示省略）を下部電極上に位置決めし、足踏みスイッチ１０を作動させることにより、前記待機位置で溶接用ボルトを受け取った前記把持部３ａが、前記供給ロッドの伸張により、上部電極及び下部電極間に移動、進出し、部品をワーク上の溶接位置に位置付け、供給する。上記把持部３ａの移動、進出がセンサ（図示省略）で検出されると、前記上部電極が下降し、前記下部電極との間で前記溶接用ボルト及びワークに通電しつつ両者を加圧して溶接を行う。 The component supply device 3 sends welding bolts sent from the supply source 2 through the hose 4 to the upper electrode at the lower end of the upper electrode holder 5 of the welding machine 1 and the lower electrode at the upper end of the lower electrode holder 6. In the middle, that is, the welding position on the workpiece set on the lower electrode is supplied. The component supply device 3 includes a gripping portion (chuck) 3a that grips a welding bolt, a supply rod that supports the gripping portion 3a, and a gripping portion 3a that is welded between the upper and lower electrodes via expansion and contraction of the supply rod. The cylinder device 3b is configured to reciprocate between a standby position on the side of the welding machine 1 and the like. The outlet of the hose 4 faces above the standby position where the grip portion 3a waits. When welding, an operator positions a work (not shown) on the lower electrode and activates the foot switch 10, whereby the gripping portion 3a that has received the welding bolt at the standby position causes the supply rod to extend. To move and advance between the upper electrode and the lower electrode to position and supply the part at the welding position on the workpiece. When the movement or advancement of the grip portion 3a is detected by a sensor (not shown), the upper electrode is lowered, and the welding bolt and workpiece are energized and welded by energizing the welding bolt and the workpiece with the lower electrode. I do.
前述のように、従来のプロジェクション溶接機においては、部品供給装置３がプロジェクション溶接機１の本体の側方（外側）に配置されており、溶接の際は、前記本体の側方に配置された部品供給装置３の把持部３ａが、前記待機位置（前記把持部３ａが前記ホース４の出口から溶接用ボルトを受け取る位置）から、前記上下電極間の溶接位置の方向へすなわち図示斜め方向（前記本体の前方に居る作業者から見て斜め方向）へ、移動して、溶接用ボルトを前記ワーク上の溶接位置に供給するようにしている。 As described above, in the conventional projection welding machine, the component supply device 3 is arranged on the side (outside) of the main body of the projection welding machine 1 and is arranged on the side of the main body during welding. The gripping portion 3a of the component supply device 3 moves from the standby position (the position at which the gripping portion 3a receives a welding bolt from the outlet of the hose 4) to the welding position between the upper and lower electrodes, that is, in the oblique direction shown in the drawing (see above). The welding bolt is supplied to the welding position on the workpiece by moving in an oblique direction as viewed from the operator in front of the main body.
しかしながら、このような従来のプロジェクション溶接機においては、前述のように、部品供給装置３がプロジェクション溶接機１の本体の側方に設置されているため、プロジェクション溶接機１の部品供給装置３を含めた全体の設置面積が大きくなってしまい工場内の各種機器のレイアウトの最適化などフロアの有効活用ができない、部品供給装置３がプロジェクション溶接機１の本体の側方に突出するように設置されているため工場内の他の物と接触又は衝突して破損してしまうことが少なくない、などの問題があった。また、前記従来のプロジェクション溶接機においては、前述のように、部品供給装置３の把持部３ａが待機位置から移動、進行して部品を前記上下電極間の溶接位置に供給する際に、前記把持部３ａが斜め方向（前記本体の前方に居る作業者から見て斜め方向）に移動するようになっているため、前記部品供給装置３により供給される部品が前記上下電極間の溶接位置まで正確に移動しているかどうかを作業者が容易に目視で確認することができないという問題があった。 However, in such a conventional projection welder, as described above, since the component supply device 3 is installed on the side of the main body of the projection welder 1, the component supply device 3 of the projection welder 1 is included. In addition, the entire installation area becomes large and the floor cannot be used effectively, such as optimizing the layout of various devices in the factory. The component supply device 3 is installed so as to protrude to the side of the main body of the projection welding machine 1. Therefore, there are many problems such as damage due to contact or collision with other objects in the factory. In the conventional projection welding machine, as described above, when the gripping portion 3a of the component supply device 3 moves and advances from the standby position to supply the component to the welding position between the upper and lower electrodes, the gripping unit 3a Since the part 3a moves in an oblique direction (oblique direction as viewed from the operator in front of the main body), the component supplied by the component supply device 3 is accurately located up to the welding position between the upper and lower electrodes. There is a problem that the operator cannot easily visually confirm whether or not the user has moved to the position.
本発明はこのような従来技術の問題点に着目してなされたものであって、抵抗溶接機の部品供給装置を含む全体の設置面積を省スペース化して工場内の各種機器のレイアウトの最適化などフロアの有効活用を実現することができ、抵抗溶接機本体の側方に備え付けられた部品供給装置が工場内の他の物と接触又は衝突して破損してしまうことを防止することができ、部品供給装置により部品又はそれを保持する部材が溶接位置まで正確に移動しているかどうかを作業者が容易に目視で確認することができ、さらに、作業者が２つの各溶接用部品が２つの各溶接位置にそれぞれ正確に配置されたことを容易に確認することができる２頭型抵抗溶接機を提供することを目的とする。
The present invention has been made paying attention to such problems of the prior art, and optimizes the layout of various devices in the factory by saving the entire installation area including the component supply device of the resistance welder. It is possible to effectively use the floor, etc., and it is possible to prevent the parts supply device provided on the side of the resistance welding machine main body from coming into contact with or colliding with other things in the factory and being damaged. In addition, the operator can easily visually check whether the component or the member holding the component is accurately moved to the welding position by the component supply device. It is an object of the present invention to provide a two-head resistance welder that can easily confirm that it has been accurately arranged at each of the two welding positions .
このような課題を解決するための本発明による２頭型抵抗溶接機は、１つの溶接機本体フレームの中の左右に、それぞれ、各空洞部が形成されており、前記２つの各空洞部の内部に、それぞれ、各部品供給装置が配置されており、前記２つの各空洞部とそれぞれ対向する作業者側の２つの各溶接位置に、それぞれ、溶接用の各上部電極及び各下部電極が配置されており、前記２つの各部品供給装置は、ボルトやナットなどの各溶接用部品を、前記２つの各空洞部側から、前記２つの各空洞部とそれぞれ対向する作業者側の２つの各溶接位置へと、それぞれ移動させるものであり、これにより、作業者が「前記２つの各部品供給装置により供給される２つの各溶接用部品が、前記２つの各空洞部側から、前記２つの各空洞部とそれぞれ対向する作業者側の２つの各溶接位置へ、それぞれ移動する様子」を容易に目視することができ、前記２つの各溶接用部品が前記２つの各溶接位置にそれぞれ正確に配置されたことを容易に確認できるようにした、ことを特徴とするものである。
In the two-head resistance welding machine according to the present invention for solving such a problem , the respective cavity portions are formed on the left and right sides of one welder body frame, respectively. Each component supply device is arranged inside, and each upper electrode and each lower electrode for welding are arranged at each of the two welding positions on the worker side facing each of the two cavities. Each of the two component supply devices is configured to transfer each welding component such as a bolt and a nut from each of the two cavities to each of the two cavities facing the two cavities. In this way, the operator moves “the two welding parts supplied by the two parts supply devices from the two cavity parts, respectively. Opposite each cavity It is possible to easily see the “moving to the two welding positions on the contractor side” and to easily confirm that the two welding parts are correctly placed at the two welding positions, respectively. It is made possible to do so.
本発明による抵抗溶接機においては、前記空洞部は、前記溶接機本体を貫通するように、形成されている。In the resistance welding machine according to the present invention, the hollow portion is formed so as to penetrate the welding machine main body.
本発明による抵抗溶接機においては、前記部品供給装置は、溶接用部品又はこれを保持する保持部を、前記空洞部内（前記空洞部内の位置）又は前記空洞部より作業者側の位置から溶接位置へと、前記空洞部から作業者に向かう方向（前記空洞部と作業者とを結ぶ方向）に沿って移動させるものである。
In the resistance welding machine according to the present invention, the component supply device may be configured to weld the welding component or the holding unit that holds the welding component from the position within the cavity (the position within the cavity) or from the position closer to the operator than the cavity. And moving along the direction from the hollow portion toward the worker (the direction connecting the hollow portion and the worker).
本発明による２頭型抵抗溶接機においては、１つの溶接機本体フレームの中の左右に、それぞれ、各空洞部を形成し、前記２つの各空洞部の内部に、それぞれ、各部品供給装置を配置し、前記２つの各空洞部とそれぞれ対向する作業者側の２つの各溶接位置に、それぞれ、溶接用の各上部電極及び各下部電極を配置し、前記２つの各部品供給装置を、ボルトやナットなどの各溶接用部品が、前記２つの各空洞部側から、前記２つの各空洞部とそれぞれ対向する作業者側の２つの各溶接位置へと、それぞれ移動するように構成したので、作業者は、「前記２つの各部品供給装置によりそれぞれ供給される２つの各溶接用部品が、前記２つの各空洞部側から、前記２つの各空洞部とそれぞれ対向する作業者側の２つの各溶接位置へ、それぞれ移動する様子」を容易に目視することができるようになり、前記２つの各溶接用部品が前記２つの各溶接位置にそれぞれ正確に配置されたことを容易に確認できるようになる。In the two-head type resistance welding machine according to the present invention, each cavity is formed on each of the left and right sides of one welder body frame, and each component supply device is provided inside each of the two cavities. An upper electrode and a lower electrode for welding are respectively arranged at two welding positions on the worker side facing each of the two cavities, and the two component supply devices are bolted Since each welding part such as a nut and a nut is configured to move from each of the two respective cavity portions to each of the two welding positions on the operator side facing each of the two respective cavity portions, The operator says, "Two welding parts respectively supplied by the two parts supply devices are provided on the two sides of the operator facing the two cavities from the two cavities. Move to each welding position That state "to be able to be easily visually the two parts for each weld is to easily confirm that it is precisely positioned to each of the two respective weld location.
また、本発明によれば、抵抗溶接機の本体に空洞部（本体と作業者とを結ぶ方向＝作業者から見て前後方向に延びる貫通穴などから成る空洞部）を形成し、前記空洞部内に部品供給装置の少なくとも一部（溶接用部品を保持する保持部を移動させるための駆動機構部などの部分）を配置するようにしたので、従来のように抵抗溶接機本体の側方に部品供給装置を配置する場合と比較して、部品供給装置を含む抵抗溶接機の全体の設置面積を従来より大幅に省スペース化することができ、工場内の各種機器のレイアウトの最適化などフロアの有効活用をより容易に実現できるようになる。
Further, according to the present invention, a hollow portion (a direction connecting the main body and the worker = a hollow portion including a through hole extending in the front-rear direction when viewed from the worker) is formed in the main body of the resistance welding machine, Since at least a part of the parts supply device (parts such as the drive mechanism for moving the holding part that holds the welding parts) is arranged on the side of the resistance welding machine body as in the past Compared to the case where the supply device is arranged, the total installation area of the resistance welding machine including the component supply device can be greatly reduced compared to the conventional method, and floor layout such as optimization of the layout of various equipment in the factory can be achieved. Effective utilization can be realized more easily.
また、本発明によれば、溶接機本体に空洞部を形成し、前記空洞部内に部品供給装置の少なくとも一部（溶接用部品を保持する保持部を移動させるための駆動機構部などの部分）を配置するようにしたので、従来のように部品供給装置を抵抗溶接機本体の側方から突出するように備え付けた場合と比較して、部品供給装置が工場内の他の物と接触又は衝突して損傷してしまう不都合を無くすことができる。
Further, according to the present invention, a hollow portion is formed in the welding machine body, and at least a part of the component supply device (a portion such as a drive mechanism portion for moving a holding portion for holding a welding component) in the hollow portion. Compared to the case where the component supply device is provided so as to protrude from the side of the resistance welder body as in the prior art, the component supply device contacts or collides with other objects in the factory. The inconvenience of being damaged can be eliminated.
さらに、本発明において、前記空洞部（本体と作業者とを結ぶ方向＝作業者から見て前後方向に延びる貫通穴などから成る空洞部）を前記溶接機本体中の作業者と対向する位置に形成し、前記部品供給装置が供給する溶接用部品又はこれを保持する保持部を、待機位置（作業者と対向する前記空洞部内又は前記空洞部より作業者側の位置）から溶接位置へと、前記空洞部と作業者とを結ぶ方向と略平行に移動させるようにしたときは、従来のように溶接用部品又はこれを保持する保持部を溶接機本体の側方又はその近傍の位置から斜め方向（前記本体の前方に居る作業者から見て斜め方向）に移動させる場合と比較して、前記溶接用部品又はこれを保持する保持部が溶接位置まで正確に移動しているかどうかを作業者が容易に目視で確認できるようになる。 Further, in the present invention, the hollow portion (the direction connecting the main body and the worker = the hollow portion including a through hole extending in the front-rear direction when viewed from the worker) is located at a position facing the worker in the welding machine main body. Forming a welding part to be supplied by the parts supply device or a holding part for holding the welding part, from a standby position (in the cavity facing the operator or on the operator side from the cavity) to a welding position; When the hollow part and the worker are moved substantially parallel to each other, the welding part or the holding part for holding the part is held obliquely from the side of the welding machine main body or in the vicinity thereof. Compared with the case of moving in the direction (diagonal direction when viewed from the operator in front of the main body), the operator determines whether or not the welding part or the holding part that holds the welding part has been accurately moved to the welding position. Can be easily confirmed visually. So as to.
〔第１の実施形態〕
以下、本発明の実施の形態を図面を用いて説明する。図１は、本発明の実施形態１に係るプロジェクション溶接機を示す斜視図である。図１において、１１はプロジェクション溶接機の本体（本体フレーム）、１１ａは前記本体１１の略中央部（前記本体１１の前方に居る作業者と対向する部分）に形成された空洞部（前記本体１１の略中央部とその前方に居る作業者とを結ぶ方向＝作業者から見て前後方向に貫通する空洞部）、１３は、図示しない供給源からホースなどを介して送られてくるナット等の部品を上下電極間のワーク上の溶接位置へ供給するための、シリンダなどから成る駆動機構部を含む部品供給装置、１３ａは部品供給装置１３の先端に備えられ溶接用のナット等の部品を保持する保持部、１３ｂは前記部品供給装置１３中の駆動機構部により伸縮するように構成されており前記保持部１３ａを供給源からの部品を受け取る待機位置と溶接位置との間で往復移動させる伸縮ロッド（矢弦）、１５は自らの下端の上部電極１５ａを保持する上部電極ホルダ、１６は自らの上端の下部電極１６ａを保持する下部電極ホルダである。
[First Embodiment]
Hereinafter, embodiments of the present invention will be described with reference to the drawings. FIG. 1 is a perspective view showing a projection welder according to Embodiment 1 of the present invention. In FIG. 1, reference numeral 11 denotes a main body (main body frame) of the projection welder, and 11 a denotes a hollow portion (the main body 11) formed in a substantially central portion of the main body 11 (a portion facing the worker in front of the main body 11). (A direction connecting the substantially central portion of the head and the worker in front thereof = a hollow portion penetrating in the front-rear direction as seen from the worker), 13 is a nut or the like sent from a supply source (not shown) via a hose or the like A component supply device 13a including a drive mechanism unit composed of a cylinder or the like for supplying components to the welding position on the workpiece between the upper and lower electrodes is provided at the tip of the component supply device 13 and holds components such as welding nuts. The holding unit 13b is configured to be expanded and contracted by a drive mechanism unit in the component supply device 13, and the holding unit 13a reciprocates between a standby position for receiving a component from a supply source and a welding position. Telescopic rod to dynamic (Yatsuru), 15 an upper electrode holder for holding the upper electrode 15a of its lower end, 16 is a lower electrode holder for holding the lower electrode 16a of their upper end.
本実施形態１において、前記部品供給装置１３は、その中の駆動機構部などの本体的な部分が前記本体１１の空洞部１１ａ内に配置されるように、前記本体１１に取り付けられている。また、前記部品供給装置１３の保持部１３ａは、ナット等の部品を吸着又は吸着解除可能な電磁石により構成されている。また、前記上部電極ホルダ１５は、前記下部電極１６ａに近接又は離反する昇降動作を行なうように前記本体１１に取り付けられている。また前記下部電極ホルダ１６は、前記本体１１に対して固定的に取り付けられている。なお従来のプロジェクション溶接機においては、溶接機本体の略中央には溶接電源となるトランスなどが配置されていることが多いが、本実施形態１においては、このトランスなどを本体１１中の他の場所に移動させて、前記本体１１の略中央に前記空洞部１１ａを形成するようにしている。 In the first embodiment, the component supply device 13 is attached to the main body 11 such that a main part such as a drive mechanism portion therein is disposed in the hollow portion 11 a of the main body 11. Further, the holding portion 13a of the component supply device 13 is constituted by an electromagnet capable of attracting or releasing a component such as a nut. Further, the upper electrode holder 15 is attached to the main body 11 so as to move up and down close to or away from the lower electrode 16a. The lower electrode holder 16 is fixedly attached to the main body 11. In conventional projection welders, a transformer or the like serving as a welding power source is often disposed at the approximate center of the welder main body. However, in the first embodiment, this transformer or the like is used in other parts of the main body 11. The cavity 11a is formed in the approximate center of the main body 11 by moving to a place.
また、本実施形態１では、図１に示すように、前記空洞部１１ａは、前記本体１１を、前記本体１１の略中央の位置と作業者とを結ぶ方向（前記本体１１と対向する位置に居る作業者から見て前後方向）に貫通するように、形成されている。これにより、本実施形態１では、前記部品供給装置１３を構成する細長いシリンダなどから成る駆動機構部を、それらの長手方向が前記空洞部１１ａと作業者とを結ぶ方向となるように（すなわち前記保持部１３ａが前記空洞部１１ａと作業者とを結ぶ方向に移動するように）、前記空洞部１１ａ内に配置されている。 Further, in the first embodiment, as shown in FIG. 1, the hollow portion 11 a is configured such that the main body 11 is connected in a direction connecting a position of a substantially center of the main body 11 and an operator (a position facing the main body 11). It is formed so as to penetrate in the front-rear direction as viewed from the worker. As a result, in the first embodiment, the drive mechanism unit composed of an elongated cylinder or the like constituting the component supply device 13 is arranged so that the longitudinal direction thereof is the direction connecting the cavity 11a and the operator (that is, The holding part 13a is arranged in the hollow part 11a so that the holding part 13a moves in a direction connecting the hollow part 11a and the worker.
次に本実施形態１の動作を説明する。前記部品供給装置１３の保持部１３ａは、供給源からの溶接用ナット等の部品を受け取るときは、前記部品供給装置１３中の駆動機構部の下端部１３ｃ内又はその近傍の待機位置に配置されている。前記保持部１３ａは、前記待機位置で溶接用ナット等を受け取るとそれを自らに吸引、吸着して保持する。そして、溶接を行うときは、前記保持部１３ａは、前記ナット等を電磁的に吸着したまま、前記伸縮ロッド１３ｂの伸張に応じて、前記ナット等を前記待機位置から上下電極１５ａ，１６ａ間のワーク（図１では図示を省略している）上の溶接位置へと移動させ、その上で吸着を解除する。これにより、前記保持部１３ａは、前記ナット等を、前記溶接位置に、位置決めしつつ供給する。 Next, the operation of the first embodiment will be described. When receiving a component such as a welding nut from a supply source, the holding portion 13a of the component supply device 13 is disposed in a standby position in or near the lower end portion 13c of the drive mechanism in the component supply device 13. ing. When the holding portion 13a receives a welding nut or the like at the standby position, the holding portion 13a sucks and adsorbs it to the holding portion 13a. When welding is performed, the holding portion 13a holds the nut or the like between the upper and lower electrodes 15a and 16a from the standby position according to the extension of the telescopic rod 13b while the nut or the like is electromagnetically attracted. The workpiece is moved to a welding position on the workpiece (not shown in FIG. 1), and the suction is released. Thereby, the said holding | maintenance part 13a supplies the said nut etc., positioning in the said welding position.
以上のように、本実施形態１によれば、前記本体１１の略中央に空洞部１１ａを形成し、前記空洞部１１ａ内に部品供給装置１３中の駆動機構部などの本体的な部分を配置するようにしたので、部品供給装置１３を含むプロジェクション溶接機の全体の設置面積を、従来より大幅に省スペース化することができるようになる。また、本実施形態１によれば、前記本体１１の略中央の空洞部１１ａ内に部品供給装置１３中の駆動機構部などの本体的な部分を配置するようにしたので、部品供給装置１３が工場内の他の物と接触又は衝突して損傷してしまう不都合を無くすことができる。また、本実施形態１によれば、前記空洞部１１ａを、前記溶接機本体１１をその略中央の位置と作業者とを結ぶ方向（前記本体と対向する位置に居る作業者から見て前後方向）に貫通するように形成するようにしたので、前記部品供給装置１３を構成する細長いシリンダなどから成る駆動機構部を、その長手方向が前記空洞部１１ａと作業者とを結ぶ方向となるように（すなわち前記保持部１３ａが前記空洞部１１ａと作業者とを結ぶ方向に移動するように）、前記空洞部１１ａ内に配置させることができる（これに対して、もし、前記空洞部１１ａを作業者から見て前後方向に本体１１を貫通するように形成しないときは、前記駆動機構部の長手方向の長さよりも前記本体１１の奥行き方向（作業者から見て前後方向）の長さの方が短いことが多いので、前記駆動機構部を、前記保持部１３ａが作業者から見て前後方向に移動するように配置することは、できない）。さらに、本実施形態１においては、前記部品供給装置１３の保持部１３ａが保持するナット等を、前記空洞部１１ａよりも作業者（前記空洞部１１ａの前方に居る作業者）側の位置（作業者と対向する位置）から、作業者の居る方向である前記上下電極１５ａ，１６ａ間の溶接位置の方向に向かって移動させる、すなわち前記空洞部１１ａと作業者とを結ぶ方向と略平行に移動させるようにしているので、作業者は、前記ナット等が前記溶接位置まで正確に移動しているかどうかを容易に目視で確認できるようになる。 As described above, according to the first embodiment, the hollow portion 11a is formed in the approximate center of the main body 11, and the main portion such as the drive mechanism portion in the component supply device 13 is disposed in the hollow portion 11a. As a result, the entire installation area of the projection welding machine including the component supply device 13 can be greatly reduced as compared with the conventional case. Further, according to the first embodiment, since the main part such as the drive mechanism part in the component supply device 13 is arranged in the substantially central cavity portion 11a of the main body 11, the component supply device 13 The inconvenience of being damaged by contact with or colliding with other objects in the factory can be eliminated. Further, according to the first embodiment, the hollow portion 11a is formed in a direction in which the welding machine main body 11 is connected to the worker at a substantially central position (front-rear direction as viewed from the worker facing the main body). ) So that the longitudinal direction of the drive mechanism unit composed of an elongated cylinder constituting the component supply device 13 is the direction connecting the cavity portion 11a and the operator. (That is, the holding portion 13a moves in the direction connecting the cavity portion 11a and the worker) and can be disposed in the cavity portion 11a (in contrast, if the cavity portion 11a is operated When not formed so as to penetrate the main body 11 in the front-rear direction as viewed from the operator, the length of the main body 11 in the depth direction (front-rear direction as viewed from the operator) is longer than the length in the longitudinal direction of the drive mechanism portion. Is short Since there are many, the drive mechanism, the holding portion 13a is arranged to move back and forth direction as viewed from the operator, can not). Furthermore, in the first embodiment, the nut or the like held by the holding portion 13a of the component supply device 13 is positioned on the worker (the worker in front of the hollow portion 11a) side (work) from the hollow portion 11a. From the position facing the worker) toward the welding position between the upper and lower electrodes 15a and 16a, which is the direction in which the worker is present, that is, substantially parallel to the direction connecting the cavity 11a and the worker. Therefore, the operator can easily visually check whether or not the nut or the like is accurately moved to the welding position.
〔第２の実施形態〕
次に、図２〜８は本発明の実施形態２に係るプロジェクション溶接機の構成及び動作を説明するための斜視図である。本実施形態２は一つの本体（本体フレーム）の左右にそれぞれ上部電極、下部電極、及び部品供給装置などを備える「２頭型」のプロジェクション溶接機であるが、以下では、この左右の中、図示左側の上部電極、下部電極、及び部品供給装置などを中心に説明する。
[Second Embodiment]
Next, FIGS. 2 to 8 are perspective views for explaining the configuration and operation of the projection welder according to the second embodiment of the present invention. The second embodiment is a “two-headed” projection welding machine including an upper electrode, a lower electrode, a component supply device, and the like on the left and right of one main body (main body frame). The description will focus on the upper electrode, lower electrode, component supply device, and the like on the left side of the figure.
図２〜８において、２１はプロジェクション溶接機の本体（本体フレーム）、２１ａは前記本体２１の略中央部（前記本体２１の前方に居る作業者と対向する部分）に形成された空洞部（前記本体２１の略中央部とその前方に居る作業者とを結ぶ方向に＝作業者から見て前後方向に貫通する空洞部であって、図示のように前記本体２１中の左右にそれぞれ形成されている）、２３は、供給源（図示省略）からホース（図示省略）などを介して送られてくるナット等の部品を上下電極間のワーク（図示省略）上の溶接位置へ供給するための、シリンダなどから成る駆動機構部を含む部品供給装置、２３ａは部品供給装置２３の先端に配置され溶接用のナット等の部品を保持する保持部、２３ｂは前記部品供給装置２３の駆動機構部により伸縮可能に延びるように構成されており前記保持部２３ａを供給源からのナット等の部品を受け取る待機位置と上下電極間の溶接位置との間で往復移動させる伸縮ロッド（矢弦）、２５は自らの下端にある上部電極２５ａを保持する上部電極ホルダ、２６は自らの上端にある下部電極２６ａを保持する下部電極ホルダである。 2 to 8, reference numeral 21 denotes a main body (main body frame) of the projection welder, and 21a denotes a hollow portion (the above-described portion that is formed in a substantially central portion of the main body 21 (a portion facing the worker in front of the main body 21). In a direction connecting the substantially central portion of the main body 21 and the worker in front of the main body 21 = hollow portions penetrating in the front-rear direction as viewed from the worker, and formed on the left and right sides of the main body 21 as shown in the figure. 23, for supplying parts such as nuts sent from a supply source (not shown) via a hose (not shown) to a welding position on a work (not shown) between the upper and lower electrodes, A component supply device including a drive mechanism unit composed of a cylinder and the like, 23a is a holding unit disposed at the tip of the component supply device 23 and holds components such as a welding nut, and 23b is expanded and contracted by the drive mechanism unit of the component supply device 23 OK An extendable rod (arrow string) 25 that reciprocally moves the holding portion 23a between a standby position for receiving a part such as a nut from a supply source and a welding position between the upper and lower electrodes. An upper electrode holder 26 that holds the upper electrode 25a at the lower end, and a lower electrode holder 26 that holds the lower electrode 26a at the upper end thereof.
本実施形態２において、前記部品供給装置２３は、その中の駆動機構部などの本体的な部分が前記本体２１の空洞部２１ａ内に配置されるように前記本体２１に取り付けられている。また、前記部品供給装置２３の保持部２３ａは、ナット等の部品を吸着又は吸着解除可能な電磁石により構成されている。また、前記上部電極ホルダ２５は前記本体２１に対して図示上下動（昇降）できるように取り付けられ、前記下部電極ホルダ２６は前記本体２１に対して固定的に取り付けられている。 In the second embodiment, the component supply device 23 is attached to the main body 21 such that a main part such as a drive mechanism portion therein is disposed in the hollow portion 21 a of the main body 21. Further, the holding portion 23a of the component supply device 23 is configured by an electromagnet capable of attracting or desorbing a component such as a nut. The upper electrode holder 25 is attached to the main body 21 so as to move up and down (up and down) in the figure, and the lower electrode holder 26 is fixedly attached to the main body 21.
また、本実施形態２では、図２などに示すように、前記空洞部２１ａは、前記本体２１を、前記本体２１の略中央の位置と作業者とを結ぶ方向（前記本体と対向する位置に居る作業者から見て前後方向）に貫通するように、形成されている。これにより、本実施形態２では、前記部品供給装置２３を構成する細長いシリンダなどから成る駆動機構部を、その長手方向が前記空洞部２１ａと作業者とを結ぶ方向となるように（すなわち前記保持部２３ａが前記空洞部２１ａと作業者とを結ぶ方向に移動するように）、前記空洞部２１ａ内に配置されている。 Further, in the second embodiment, as shown in FIG. 2 and the like, the hollow portion 21a is configured so that the main body 21 is connected in a direction connecting the position of the center of the main body 21 and an operator (a position facing the main body). It is formed so as to penetrate in the front-rear direction as viewed from the worker. As a result, in the second embodiment, the drive mechanism portion composed of an elongated cylinder or the like constituting the component supply device 23 is arranged so that the longitudinal direction thereof is a direction connecting the cavity portion 21a and the operator (that is, the holding portion). The portion 23a is disposed in the cavity portion 21a so that the portion 23a moves in a direction connecting the cavity portion 21a and the worker.
次に本実施形態２の動作を説明する。前記部品供給装置２３の保持部２３ａは、供給源からの溶接用ナット等の部品を受け取るときは、前記部品供給装置２３の駆動機構部の下端部２３ｃ内又はその近傍の待機位置に配置されている。図３及び図４は前記保持部２３ａが前記待機位置に配置されている状態を示している。前記保持部２３ａは、前記待機位置で溶接用ナット等を受け取ると、それを自らに吸引、吸着して保持する。 Next, the operation of the second embodiment will be described. When receiving a component such as a welding nut from a supply source, the holding unit 23a of the component supply device 23 is disposed in a standby position in or near the lower end 23c of the drive mechanism unit of the component supply device 23. Yes. 3 and 4 show a state in which the holding portion 23a is arranged at the standby position. When the holding portion 23a receives a welding nut or the like at the standby position, the holding portion 23a sucks and adsorbs it to the holding portion 23a.
その後、溶接を行うときは、前記保持部２３ａは、溶接用ナットを電磁的に吸着したまま、前記伸縮ロッド２３ｂの伸張に応じて、前記ナットを前記待機位置から上下電極２５ａ，２６ａ間のワーク（図示省略）上の溶接位置へと移動し、その位置で吸着を解除し、これにより前記ナットを前記溶接位置に配置、供給する。図５及び図６は、前記保持部２３ａが溶接用ナットを吸着したまま上下電極２５ａ，２６ａ間の溶接位置に移動し、溶接用ナット２７を前記下部電極２６ａ上に配置、供給したときの状態を示すものである。なお、この図５，６ではワークの図示を省略して示しているが、実際の溶接作業では、作業者がワークを前記上下電極２５ａ，２６ａ間に移動させて前記下部電極２６ａをワークの所定の穴に挿通させ、このワークの穴から上方に突出した前記下部電極２６ａ上に、前記保持部２３ａが前記溶接用ナット２７を位置決めして配置、供給するようにしている。 Thereafter, when welding is performed, the holding portion 23a moves the nut between the upper and lower electrodes 25a, 26a from the standby position in accordance with the extension of the telescopic rod 23b while electromagnetically attracting the welding nut. (Not shown) Moves to the upper welding position, releases the suction at that position, and arranges and supplies the nut to the welding position. 5 and 6 show a state in which the holding portion 23a moves to the welding position between the upper and lower electrodes 25a and 26a while adsorbing the welding nut, and the welding nut 27 is arranged and supplied on the lower electrode 26a. Is shown. 5 and 6, the workpiece is not shown. However, in an actual welding operation, an operator moves the workpiece between the upper and lower electrodes 25 a and 26 a to move the lower electrode 26 a to a predetermined portion of the workpiece. The holding portion 23a positions, arranges and supplies the welding nut 27 on the lower electrode 26a protruding upward from the hole of the workpiece.
図７及び図８は、前述のようにして溶接用ナット２７が前記ワーク（図示省略）及び下部電極２６ａ上の溶接位置に配置、供給された後に、前記保持部２３ａが、前記駆動機構部の下端部２３ｃの待機位置の方向に移動している途中の状態を示す図である。このときは、図７，８に示すように、上部電極ホルダ２５及び上部電極２５ａが、前記溶接用ナット２７に近づくように徐々に下降し（図７参照）、その後、前記溶接用ナット２７をワーク（図示省略）側に加圧しながらこれらを下部電極２６ａとの間で通電するようにし（図８参照）、これにより溶接が行われる。 7 and 8, as described above, after the welding nut 27 is disposed and supplied at the welding position on the workpiece (not shown) and the lower electrode 26a, the holding portion 23a is connected to the drive mechanism portion. It is a figure which shows the state in the middle of moving to the direction of the standby position of the lower end part 23c. At this time, as shown in FIGS. 7 and 8, the upper electrode holder 25 and the upper electrode 25a are gradually lowered so as to approach the welding nut 27 (see FIG. 7). These are energized with the lower electrode 26a while applying pressure to the work (not shown) side (see FIG. 8), thereby welding.
以上のように、本実施形態２によれば、前記本体２１の作業者から見て左右の各位置に、それぞれ、前記本体と対向する位置に居る作業者から見て前後方向に前記本体２１を貫通する空洞部２１ａを形成し、前記空洞部２１ａ内に、前記部品供給装置２３を構成する細長いシリンダなどから成る駆動機構部を、その長手方向が前記空洞部２１ａと作業者とを結ぶ方向となるように（すなわち前記保持部２３ａが前記空洞部２１ａと作業者とを結ぶ方向に移動するように）、前記空洞部２１ａ内に配置されている。よって、この実施形態２によるときは、前記実施形態１と同様の効果を奏することができると共に、作業者が、「２つの各部品供給装置によりそれぞれ供給される２つの各溶接用部品が、２つの各空洞部側から、２つの各空洞部とそれぞれ対向する作業者側の２つの各溶接位置へ、それぞれ移動する様子」を容易に目視することができるようになり、２つの各溶接用部品が２つの各溶接位置にそれぞれ正確に配置されたことを容易に確認できるようになる。 As described above, according to the second embodiment, the main body 21 is placed in the left and right positions when viewed from the operator of the main body 21 and in the front-rear direction as viewed from the worker at the position facing the main body. A hollow portion 21a penetrating is formed, and a drive mechanism portion made of an elongated cylinder or the like constituting the component supply device 23 is formed in the hollow portion 21a, the longitudinal direction of which is a direction connecting the hollow portion 21a and an operator. (In other words, the holding portion 23a moves in a direction connecting the hollow portion 21a and the worker) and is disposed in the hollow portion 21a. Accordingly, when according to the second embodiment, it is possible to achieve the same effect as the embodiment 1, the operator, "two parts for each weld supplied respectively by two each of the component feeding device, 2 It is possible to easily see from each of the two cavities side to each of the two welding positions on the operator side facing each of the two cavities. Can be easily confirmed to be accurately arranged at each of the two welding positions.
〔第３の実施形態〕
次に本発明の実施形態３に係るプロジェクション溶接機を、図９，１０を参照して説明する。なお本実施形態３は、前記実施形態２のような「２頭型」のプロジェクション溶接機とは異なって、前記実施形態１と同様の、一つの本体（本体フレーム）に一つの上部電極、下部電極、及び部品供給装置などを備える「１頭型」のプロジェクション溶接機である。
[Third Embodiment]
Next, a projection welding machine according to Embodiment 3 of the present invention will be described with reference to FIGS. The third embodiment is different from the “two-headed” projection welder as in the second embodiment, and is similar to the first embodiment in that one main body (main body frame) has one upper electrode and one lower electrode. This is a “one-head type” projection welding machine including an electrode, a component supply device, and the like.
図９，１０において、３１はプロジェクション溶接機の本体（本体フレーム）、３１ａは前記本体３１の略中央部（前記本体３１の前方に居る作業者と対向する部分）に形成された空洞部（前記本体３１の略中央部とその前方の作業者とを結ぶ方向＝作業者から見て前後方向に貫通する空洞部）、３３は、供給源からホースなどを介して送られてくるナット等の部品を上下電極間のワーク上の溶接位置へ供給するための、シリンダなどから成る駆動機構部を含む部品供給装置、３５は自らの下端にある上部電極３５ａを保持する上部電極ホルダ、３６は自らの上端にある下部電極を保持する下部電極ホルダである。 9 and 10, reference numeral 31 denotes a main body (main body frame) of the projection welder, and 31 a denotes a hollow portion formed in a substantially central portion of the main body 31 (a portion facing the worker in front of the main body 31). The direction connecting the substantially central portion of the main body 31 and the worker in front of the main body 31 = a hollow portion penetrating in the front-rear direction as viewed from the worker), 33 is a part such as a nut sent from a supply source via a hose or the like Is a component supply device including a drive mechanism unit composed of a cylinder or the like, 35 is an upper electrode holder that holds an upper electrode 35a at its lower end, and 36 is its own It is a lower electrode holder that holds the lower electrode at the upper end.
なお、図９，１０においては、前記実施形態１，２で説明したナット等の部品を保持する保持部（図１の符号１３ａ，図２の符号２３ａ参照）、及び前記保持部をナット等を受け取る待機位置と溶接位置との間で往復移動させる伸縮ロッド（図１の符号１３ｂ，図２の符号２３ｂ参照）は、前記の保持部及び伸縮ロッドが前記部品供給装置３３の駆動機構部の下端部３３ｃの内側に収容されているため図示していない。 In FIGS. 9 and 10, a holding part (see reference numeral 13a in FIG. 1 and reference numeral 23a in FIG. 2) for holding the parts such as nuts described in the first and second embodiments, and the holding part with a nut or the like. The telescopic rod (see reference numeral 13b in FIG. 1 and reference numeral 23b in FIG. 2) that reciprocates between the receiving standby position and the welding position is the lower end of the drive mechanism section of the component supply device 33. Since it is accommodated inside the portion 33c, it is not shown.
以上のように、本実施形態２においても、前記各実施形態１，２と同様に、前記本体３１の略中央の位置に、その位置と作業者とを結ぶ方向（前記本体と対向する位置に居る作業者から見て前後方向）に前記本体３１を貫通する空洞部３１ａを形成し、前記空洞部３１ａ内に、部品供給装置３３の細長い駆動機構部などの本体的な部分を、その長手方向が前記空洞部３１ａと作業者とを結ぶ方向となるように（すなわち前記保持部３３ａが前記空洞部３１ａと作業者とを結ぶ方向に移動するように）、配置している。よって、この実施形態３によるときも、前記各実施形態１，２と同様の効果を奏することができる。 As described above, also in the second embodiment, in the same manner as in the first and second embodiments, the direction connecting the position and the operator (the position facing the main body) is set at a substantially central position of the main body 31. A hollow portion 31a penetrating the main body 31 is formed in the longitudinal direction as viewed from a worker who is present, and a main portion such as an elongated drive mechanism portion of the component supply device 33 is disposed in the hollow portion 31a in the longitudinal direction. Is arranged so as to be in a direction connecting the hollow portion 31a and the worker (that is, the holding portion 33a moves in a direction connecting the hollow portion 31a and the worker). Therefore, even when the third embodiment is used, the same effects as those of the first and second embodiments can be obtained.
以上、本発明の各実施形態について説明したが、本発明は前記の各実施形態として述べたものに限定されるものではなく、様々な修正及び変更が可能である。例えば、前記実施形態１〜３においては、いずれもプロジェクション溶接機を例にして説明したが、本発明はこれに限られるものではなく、例えばスポット溶接機など、様々なタイプの部品供給装置を備える抵抗溶接機に適用できることは勿論である。 As mentioned above, although each embodiment of the present invention was described, the present invention is not limited to what was described as each above-mentioned embodiment, and various amendments and changes are possible. For example, in the first to third embodiments, the projection welding machine has been described as an example. However, the present invention is not limited thereto, and includes various types of component supply devices such as a spot welding machine. Of course, it can be applied to resistance welding machines.
１１，２１，３１ 溶接機の本体
１１ａ，２１ａ，３１ａ 空洞部
１３，２３，３３ 部品供給装置
１３ａ，２３ａ 保持部
１３ｂ，２３ｂ 伸縮ロッド
１３ｃ，２３ｃ，３３ｃ 駆動機構部（部品供給装置中の駆動機構部）の下端部
１５，２５ 上部電極ホルダ
１５ａ，２５ａ，３５ａ 上部電極
１６，２６ 下部電極ホルダ
１６ａ，２６ａ 下部電極
２７ 溶接用ナット
11, 21, 31 Welding machine main bodies 11a, 21a, 31a Cavities 13, 23, 33 Component supply devices 13a, 23a Holding portions 13b, 23b Telescopic rods 13c, 23c, 33c Drive mechanism (drive mechanism in component supply device) Lower electrode parts 15 and 25 Upper electrode holders 15a, 25a and 35a Upper electrode 16 and 26 Lower electrode holders 16a and 26a Lower electrode 27 Welding nut
Claims (1)
前記２つの各空洞部の内部に、それぞれ、各部品供給装置が配置されており、Each component supply device is arranged inside each of the two cavities,
前記２つの各空洞部とそれぞれ対向する作業者側の２つの各溶接位置に、それぞれ、溶接用の各上部電極及び各下部電極が配置されており、Each upper electrode and each lower electrode for welding are disposed at each of the two welding positions on the operator side facing the two hollow portions, respectively.
前記２つの各部品供給装置は、ボルトやナットなどの各溶接用部品を、前記２つの各空洞部側から、前記２つの各空洞部とそれぞれ対向する作業者側の２つの各溶接位置へと、それぞれ移動させるものであり、Each of the two component supply devices transfers each welding component such as a bolt and a nut from the two cavity portions to the two welding positions on the operator side facing the two cavities. , Each move
これにより、作業者が「前記２つの各部品供給装置によりそれぞれ供給される２つの各溶接用部品が、前記２つの各空洞部側から、前記２つの各空洞部とそれぞれ対向する作業者側の２つの各溶接位置へ、それぞれ移動する様子」を容易に目視することができ、前記２つの各溶接用部品が前記２つの各溶接位置にそれぞれ正確に配置されたことを容易に確認できるようにした、ことを特徴とする２頭型抵抗溶接機。As a result, the operator said, “The two welding parts respectively supplied by the two parts supply devices are from the two cavity parts to the two cavity parts respectively facing the two cavity parts. The state of moving to each of the two welding positions can be easily observed, and it can be easily confirmed that the two welding parts are accurately arranged at the two welding positions, respectively. A two-head resistance welding machine characterized by that.
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| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN104526200A (en) * | 2014-12-23 | 2015-04-22 | 王金领 | Stud welding automatic feeding device |
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| JPS61133272U (en) * | 1985-02-07 | 1986-08-20 | ||
| JPS62286683A (en) * | 1986-06-05 | 1987-12-12 | Toyota Motor Corp | Projection welding equipment |
| JPH0281777U (en) * | 1988-12-06 | 1990-06-25 | ||
| JPH06344151A (en) * | 1993-06-11 | 1994-12-20 | Kiyouhou Seisakusho:Kk | Electric welding equipment |
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| Publication number | Priority date | Publication date | Assignee | Title |
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| JPS61133272U (en) * | 1985-02-07 | 1986-08-20 | ||
| JPS62286683A (en) * | 1986-06-05 | 1987-12-12 | Toyota Motor Corp | Projection welding equipment |
| JPH0281777U (en) * | 1988-12-06 | 1990-06-25 | ||
| JPH06344151A (en) * | 1993-06-11 | 1994-12-20 | Kiyouhou Seisakusho:Kk | Electric welding equipment |
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| Publication number | Priority date | Publication date | Assignee | Title |
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| CN104526200A (en) * | 2014-12-23 | 2015-04-22 | 王金领 | Stud welding automatic feeding device |
| CN104526200B (en) * | 2014-12-23 | 2016-05-18 | 王金领 | A kind of stud welding automatic feeding |
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