JP5796805B2 - Component supply structure section and component supply method - Google Patents

Component supply structure section and component supply method Download PDF

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JP5796805B2
JP5796805B2 JP2011122706A JP2011122706A JP5796805B2 JP 5796805 B2 JP5796805 B2 JP 5796805B2 JP 2011122706 A JP2011122706 A JP 2011122706A JP 2011122706 A JP2011122706 A JP 2011122706A JP 5796805 B2 JP5796805 B2 JP 5796805B2
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JP2012240119A (en
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青山　好高
好高 青山
青山　省司
省司 青山
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青山　好高
好高 青山
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この発明は、磁石を利用して部品を目的箇所へ供給する部品供給構造部および部品供給方法に関している。  The present invention relates to a component supply structure unit and a component supply method for supplying a component to a target location using a magnet.

図４は、特許第２５０９１０３号公報に記載されている部品供給装置である。ここで供給される部品は、同図（Ｂ）に示した鉄製のプロジェクションボルト５０であり、雄ねじが切られた軸部５１と、それと一体に形成された円形のフランジ部５２と、軸部５１とは反対側のフランジ部５２の中央部に形成された円形の溶着用突起６５によって構成されている。  FIG. 4 shows a component supply apparatus described in Japanese Patent No. 2509103. The parts supplied here are the iron projection bolts 50 shown in FIG. 2B, and a shaft portion 51 in which a male screw is cut, a circular flange portion 52 formed integrally therewith, and a shaft portion 51. It is comprised by the circular welding protrusion 65 formed in the center part of the flange part 52 on the opposite side.

エアシリンダ５３によって進退する供給ロッド５４の先端部にボルト５０の保持部材５５が結合され、この保持部材５５に部品保持用の永久磁石５６が取り付けられている。そして、ボルト供給の目的箇所として電気抵抗溶接電極５７の受入孔５８が形成され、この受入孔５８の奥に部品保持用の永久磁石５９が取り付けられている。供給ロッド５４が進出して軸部５１が受入孔５８と同軸になった位置で停止し、ついで挿入エアシリンダ６０の動作で軸部５１が受入孔５８に挿入される。そのとき、受入孔５８側の永久磁石５９の磁気力は、保持部材５５側の永久磁石５６のそれよりも強い値に設定されているので、保持部材５５が元の位置の方へ後戻りをしても、ボルト５０は永久磁石５６の吸引力に抗して受入孔５８内に引き込まれる。  A holding member 55 of a bolt 50 is coupled to the tip of the supply rod 54 that is advanced and retracted by the air cylinder 53, and a permanent magnet 56 for holding a component is attached to the holding member 55. A receiving hole 58 of the electric resistance welding electrode 57 is formed as a target location of the bolt supply, and a permanent magnet 59 for holding a component is attached to the back of the receiving hole 58. The supply rod 54 advances and stops at a position where the shaft portion 51 is coaxial with the receiving hole 58, and then the shaft portion 51 is inserted into the receiving hole 58 by the operation of the insertion air cylinder 60. At that time, since the magnetic force of the permanent magnet 59 on the receiving hole 58 side is set to a value stronger than that of the permanent magnet 56 on the holding member 55 side, the holding member 55 moves back to the original position. Even so, the bolt 50 is pulled into the receiving hole 58 against the attractive force of the permanent magnet 56.

なお、挿入エアシリンダ６０は機枠などの静止部材６１に固定され、そのピストンロッド６２がブラケット６３を介してエアシリンダ５３に結合してある。また、パーツフィーダ（図示していない）から延びてきている部品供給管６４が設けられ、復帰した保持部材５５にボルト５０を載置するようになっている。また、電極５７は可動電極であり、それに対する固定電極６６が可動電極５７と同軸上に配置され、その上にボルト５０が溶接される鋼板部品６７が載置してある。  The insertion air cylinder 60 is fixed to a stationary member 61 such as a machine frame, and its piston rod 62 is coupled to the air cylinder 53 via a bracket 63. Further, a parts supply pipe 64 extending from a parts feeder (not shown) is provided, and the bolt 50 is placed on the returned holding member 55. The electrode 57 is a movable electrode, and a fixed electrode 66 corresponding to the electrode 57 is disposed coaxially with the movable electrode 57, and a steel plate part 67 to which the bolt 50 is welded is mounted thereon.

特許第２５０９１０３号公報Japanese Patent No. 2509103

上記特許文献１の技術においては、ボルト５０を受入孔５８内に引き込む力が、永久磁石５９の磁力と永久磁石５６の磁力の大小差に応じて決定される。ところが、ボルト５０の質量が大きいときには、上記磁力の大小差を大きく設定しなければならない。しかしながら、磁力の大小差を大きく設定するためには、磁石の大きさ寸法にも大幅な大小差を付与する必要があり、外形寸法の大きな磁石を電極内部に配置することがスペース的に困難になる。  In the technique of Patent Document 1, the force for pulling the bolt 50 into the receiving hole 58 is determined according to the magnitude difference between the magnetic force of the permanent magnet 59 and the magnetic force of the permanent magnet 56. However, when the mass of the bolt 50 is large, the magnitude difference of the magnetic force must be set large. However, in order to set a large difference in magnetic force, it is necessary to provide a large difference in the size of the magnet, and it is difficult to place a magnet having a large outer dimension inside the electrode in terms of space. Become.

本発明は、上記の問題点を解決するために提供されたもので、磁石の極性を所定の極性に設定することにより、部品を目的箇所へ到達させる力を大きくすることのできる部品供給構造部および部品供給方法の提供を目的とする。  The present invention is provided in order to solve the above-described problems. By setting the polarity of the magnet to a predetermined polarity, the component supply structure unit that can increase the force to reach the target location of the component It is also intended to provide a component supply method.

請求項１記載の発明は、部品供給構造部の発明であり、保持部材を移動することによって前記保持部材に保持した磁性材料製の部品を目的箇所へ到達させるものであって、前記保持部材に取り付けた部品保持用の第１磁石の極性が、部品のほぼ移動方向で見て、前記目的箇所に取り付けた部品保持用の第２磁石の極性に対して逆に設定され、前記第２磁石の磁力が第１磁石の磁力よりも強く設定してあり、前記第１磁石と第２磁石は永久磁石で構成され、
前記第１磁石の吸引力によって前記保持部材に保持された部品を、前記目的箇所の方へ移動させて前記部品を前記第２磁石の磁界内に存在させることにより、前記部品を前記第２磁石で吸引するとともに、前記部品の移動方向後端部の極性と前記第１磁石の部品側の極性を同極性にして、前記部品と前記第１磁石との間に反発力が生じるように構成したことを特徴とする部品供給構造部である。The invention according to claim 1 is an invention of a part supply structure part, and moves a holding member to cause a part made of a magnetic material held by the holding member to reach a target location. The polarity of the attached first magnet for holding the component is set to be opposite to the polarity of the second magnet for holding the component attached to the target position when viewed in the direction of movement of the component. force Ri Thea set stronger than the magnetic force of the first magnet, the first magnet and the second magnet is constituted by permanent magnets,
The component held by the holding member by the attraction force of the first magnet is moved toward the target location so that the component is present in the magnetic field of the second magnet, whereby the component is moved to the second magnet. And the polarity of the rear end portion in the moving direction of the component and the polarity of the component side of the first magnet are the same polarity so that a repulsive force is generated between the component and the first magnet. This is a component supply structure section.

前記保持部材に取り付けた部品保持用の第１磁石の極性が、部品のほぼ移動方向で見て、前記目的箇所に取り付けた部品保持用の第２磁石の極性に対して逆に設定され、前記第２磁石の磁力が第１磁石の磁力よりも強く設定してある。  The polarity of the first magnet for holding the component attached to the holding member is set to be opposite to the polarity of the second magnet for holding the component attached to the target location when viewed in the direction of movement of the component. The magnetic force of the second magnet is set stronger than the magnetic force of the first magnet.

このため、保持部材の移動開始前においては、第１磁石によって保持部材に保持された部品の先端部と第２磁石の間隔が大きいので、第２磁石の磁界の領域は部品から離隔した状態になっていて、第２磁石からの磁気的影響は部品に対して及ぶことがない。そして、このときには部品の移動方向で見た部品の先端部は、第１磁石の磁力線の透過によって第１磁石の極性と同じになっているとともに、部品の移動方向後端部の極性と第１磁石の部品側の極性は逆になっていて、部品は第１磁石に吸引されている。  For this reason, before the movement of the holding member starts, the distance between the tip of the component held by the holding member by the first magnet and the second magnet is large, so that the magnetic field region of the second magnet is separated from the component. Thus, the magnetic influence from the second magnet does not reach the part. At this time, the front end of the component viewed in the moving direction of the component is the same as the polarity of the first magnet due to the transmission of the lines of magnetic force of the first magnet, and the polarity of the rear end of the moving direction of the component and the first The polarity on the component side of the magnet is reversed, and the component is attracted to the first magnet.

この極性の状態で保持部材が第２磁石の方へ移動を開始して部品が第２磁石の磁界内に進入すると、進入初期の段階では、部品先端部の極性と第２磁石の部品側の極性が同じであるため、部品先端部と第２磁石とは反発する関係となるが、部品先端部と第２磁石との間隔が大きいので、実質的には反発力は発生しない。  When the holding member starts moving toward the second magnet in this state of polarity and the component enters the magnetic field of the second magnet, the polarity of the tip of the component and the component side of the second magnet at the initial stage of entry Since the polarities are the same, there is a repulsive relationship between the component tip and the second magnet. However, since the distance between the component tip and the second magnet is large, substantially no repulsive force is generated.

これに引き続いて保持部材がさらに第２磁石の方へ移動すると、部品は第２磁石の磁界内に置かれ、第２磁石の磁力が第１磁石のそれよりも強いので、第２磁石の磁力線が部品を透過する。このため、部品先端部の極性が第２磁石の部品側極性とは逆となり、同時に、部品の移動方向後端部の極性は第１磁石の部品側極性と同じになる。したがって、部品と第２磁石との間では吸引力が発生し、部品と第１磁石との間では反発力が発生する。上記の吸引現象による力と反発現象による力が相乗されて、部品を目的箇所へ到達させる総合的な力が十分な値として確実にえられる。上記の進入初期の段階における反発関係は、部品先端部と第２磁石との間の距離が長いので、実質的に反発力は発生せず、保持部材の移動に支障を来すことはない。  Subsequent to this, when the holding member moves further toward the second magnet, the component is placed in the magnetic field of the second magnet, and the magnetic force of the second magnet is stronger than that of the first magnet. Penetrates the part. For this reason, the polarity of the front end portion of the component is opposite to the polarity on the component side of the second magnet, and at the same time, the polarity of the rear end portion in the moving direction of the component is the same as the polarity on the component side of the first magnet. Accordingly, an attractive force is generated between the component and the second magnet, and a repulsive force is generated between the component and the first magnet. The force due to the above-mentioned suction phenomenon and the force due to the repulsion phenomenon are synergistically ensured that the total force for reaching the part to the target location is obtained as a sufficient value. In the repulsion relationship at the initial stage of entry, since the distance between the tip of the component and the second magnet is long, substantially no repulsive force is generated, and the movement of the holding member is not hindered.

前記第１磁石と第２磁石の極性が、部品の移動方向で見て逆に設定してあるとともに、第２磁石の磁力が第１磁石の磁力よりも強く設定してあるので、保持部材が第２磁石の方へ移動すると、部品は第１磁石よりも強められている第２磁石の磁気力で吸引される。この吸引と同時に、部品の移動方向後端部の極性と第１磁石の部品側の極性が同極性となって、ここに部品を反発する力が発生する。上述のように、部品の移動方向後端部の極性と第１磁石の部品側の極性が同極性となるのは、磁力が第１磁石よりも強められている第２磁石の磁界内に部品が存在させられることにより、第２磁石の磁力線が部品を透過して部品の移動方向後端部の極性が第２磁石の極性と同じになるためである。  Since the polarities of the first magnet and the second magnet are set opposite to each other in the moving direction of the component, and the magnetic force of the second magnet is set stronger than the magnetic force of the first magnet, the holding member is When moving toward the second magnet, the part is attracted by the magnetic force of the second magnet, which is stronger than the first magnet. Simultaneously with this suction, the polarity at the rear end of the moving direction of the component and the polarity on the component side of the first magnet become the same polarity, and a force to repel the component is generated here. As described above, the polarity of the rear end portion in the moving direction of the component and the polarity on the component side of the first magnet are the same polarity because the component is in the magnetic field of the second magnet whose magnetic force is stronger than that of the first magnet. This is because the magnetic field lines of the second magnet pass through the component and the polarity of the rear end portion in the moving direction of the component becomes the same as the polarity of the second magnet.

上述のように、第１磁石と第２磁石が永久磁石で構成されているとともに、両磁石の極性が逆であることと、両磁石の磁力に大小差が付与されていることによって、部品が第２磁石の方へ移動させられると、自動的に部品自体の極性が変換されて、吸引現象による力と反発現象による力が相乗されるのである。As described above, the first magnet and the second magnet are composed of permanent magnets, the polarities of the two magnets are reversed, and the difference in magnitude between the magnetic forces of the two magnets is given. When moved toward the second magnet, the polarity of the component itself is automatically converted, and the force due to the attraction phenomenon and the force due to the repulsion phenomenon are combined.

したがって、上記吸引と反発の相乗作用により十分な値の力がえられるので、部品の質量が大きい場合であっても、前述の磁石寸法の大小差を大きくすることなく、制約された箇所において小型の磁石を配置して、スペース的に有利な条件で磁石配置をすることができる。また、部品の移動力が不足することを補うために、保持部材から部品に対して空気噴射を行うことが行われているが、このような空気噴射は空気通路や噴射制御などにおいて構造が複雑になりとともに、圧縮空気の節約においても不経済である。本発明では、このような問題も一掃されるという効果がある。  Therefore, a sufficient value of force can be obtained by the synergistic action of attraction and repulsion. Therefore, even in the case where the mass of the component is large, it is possible to reduce the size in a restricted place without increasing the above-described difference in magnet size. It is possible to arrange the magnets under conditions that are advantageous in terms of space. In addition, in order to compensate for the lack of moving force of parts, air injection is performed from the holding member to the parts, but such air injection has a complicated structure in the air passage and injection control. In addition, it is uneconomical in saving compressed air. The present invention has an effect of eliminating such a problem.

請求項２記載の発明は、前記部品がプロジェクションボルトなどの軸状部品であり、電気抵抗溶接電極に前記軸状部品が挿入される受入孔が形成され、この受入孔の奥部に前記第２磁石が取付けられ、前記保持部材は、前記軸状部品を前記受入孔へ供給する供給装置の保持ヘッドまたはその一部を形成する部材であり、前記保持部材に前記第１磁石が取り付けられている電気抵抗溶接装置用の請求項１記載の部品供給構造部である。  According to a second aspect of the present invention, the component is a shaft-shaped component such as a projection bolt, a receiving hole into which the shaft-shaped component is inserted is formed in the electric resistance welding electrode, and the second portion is formed at the back of the receiving hole. A magnet is attached, and the holding member is a member that forms a holding head of a supply device that supplies the shaft-shaped component to the receiving hole or a part thereof, and the first magnet is attached to the holding member. It is a component supply structure part of Claim 1 for electrical resistance welding apparatuses.

請求項２記載の発明は、請求項１記載の部品供給構造部の発明を電気抵抗溶接装置に適用したものであり、軸状部品の移動に伴う部品自体の極性変換や、吸引・反発の現象は請求項１記載のものと同じである。さらに、前述のように、第２磁石を小型のものとすることができるので、前記受入孔の奥部、すなわち電極の内部のようにスペース的に制約のある箇所であっても、支障なく磁石配置が可能となる。  The invention according to claim 2 applies the invention of the component supply structure according to claim 1 to the electric resistance welding apparatus, and the polarity conversion of the component itself accompanying the movement of the shaft-shaped component, and the phenomenon of suction / repulsion Is the same as that described in claim 1. Furthermore, since the second magnet can be made small as described above, the magnet can be used without any trouble even in the inner portion of the receiving hole, that is, in a space-constrained place such as the inside of the electrode. Placement is possible.

請求項３記載の発明は、方法の発明であり、保持部材を移動することによって前記保持部材に保持した磁性材料製の部品を目的箇所へ到達させるものであって、前記保持部材に取り付けた部品保持用の第１磁石の極性が、部品のほぼ移動方向で見て、前記目的箇所に取り付けた部品保持用の第２磁石の極性に対して逆に設定され、前記第２磁石の磁力が第１磁石の磁力よりも強く設定してある部品供給構造部を準備し、前記第１磁石の吸引力によって前記保持部材に保持された部品を、前記目的箇所の方へ移動させて前記部品を前記第２磁石の磁界内に存在させることにより、前記部品を前記第２磁石で吸引するとともに、前記部品の移動方向後端部の極性と前記第１磁石の部品側の極性を同極性にして、前記部品と前記第１磁石との間に反発力が生じるようにしたことを特徴とする部品供給方法である。  The invention according to claim 3 is a method invention, wherein a part made of a magnetic material held by the holding member is moved to a target location by moving the holding member, and the part is attached to the holding member. The polarity of the first magnet for holding is set to be opposite to the polarity of the second magnet for holding the component attached to the target location when viewed in the direction of movement of the component, and the magnetic force of the second magnet is Preparing a component supply structure that is set to be stronger than the magnetic force of one magnet, moving the component held by the holding member by the attractive force of the first magnet toward the target location, and By being present in the magnetic field of the second magnet, the component is attracted by the second magnet, and the polarity of the rear end in the moving direction of the component and the polarity of the component side of the first magnet are the same. Between the part and the first magnet A component supply method is characterized in that as a force is generated.

上記方法の作用効果は、請求項１記載の発明の作用効果と同じである。  The operational effects of the above method are the same as the operational effects of the first aspect of the invention.

請求項４記載の発明は、前記部品がプロジェクションボルトなどの軸状部品であり、電気抵抗溶接電極に前記軸状部品が挿入される受入孔が形成され、この受入孔の奥部に前記第２磁石が取付けられ、前記保持部材は、前記軸状部品を前記受入孔へ供給する供給装置の保持ヘッドまたはその一部を形成する部材であり、前記保持部材に前記第１磁石が取り付けられている電気抵抗溶接における請求項３記載の部品供給方法である。  According to a fourth aspect of the present invention, the component is a shaft-shaped component such as a projection bolt, a receiving hole into which the shaft-shaped component is inserted is formed in the electric resistance welding electrode, and the second portion is formed at the back of the receiving hole. A magnet is attached, and the holding member is a member that forms a holding head of a supply device that supplies the shaft-shaped component to the receiving hole or a part thereof, and the first magnet is attached to the holding member. It is a component supply method of Claim 3 in electrical resistance welding.

請求項４記載の発明は、請求項２記載の部品供給構造部の発明を請求項３記載の発明に組み合わせたものであり、軸状部品の移動に伴う部品自体の極性変換や吸引・反発の現象は、請求項１記載のものと同じである。さらに、軸状部品に対して吸引と反発が同時に作用するので、受入孔の奥まで勢いよく部品挿入が可能となる。また、何等かの原因で軸状部品が受入孔の開口角部に擦れるようなことがあっても、軸状部品を受入孔内へ導入する力が十分に確保できるので、このような擦れの場合であっても確実に部品挿入が可能となる。  The invention described in claim 4 is the combination of the invention of the component supply structure section described in claim 2 with the invention described in claim 3, and the polarity change of the component itself and the suction / repulsion caused by the movement of the shaft-shaped component. The phenomenon is the same as that described in claim 1. Further, since suction and repulsion act simultaneously on the shaft-like component, it is possible to insert the component vigorously to the depth of the receiving hole. Even if the shaft-like component rubs against the opening corner of the receiving hole for any reason, a sufficient force can be secured to introduce the shaft-like component into the receiving hole. Even in this case, it is possible to reliably insert the parts.

部品供給構造部の断面図である。It is sectional drawing of a component supply structure part. 部品移動を段階的に示す簡略的な断面図である。It is a simplified sectional view showing component movement step by step. 他の実施例を示す断面図である。It is sectional drawing which shows another Example. 従来例を示す断面図である。It is sectional drawing which shows a prior art example.

つぎに、本発明の部品供給構造部および部品供給方法を実施するための形態を説明する。  Next, an embodiment for carrying out the component supply structure unit and the component supply method of the present invention will be described.

図１および図２は、本発明の実施例１を示す。  1 and 2 show Example 1 of the present invention.

最初に、部品について説明する。  First, components will be described.

本発明によって供給される部品としては、軸状部品であるプロジェクションボルトや細長い直方体の部品など色々なものがある。この実施例において供給される部品は図１（Ａ）に示すように、鉄製のプロジェクションボルト１であり、雄ねじが切られた軸部２と、それと一体に形成された円形のフランジ部３と、軸部２とは反対側のフランジ部３の中央部に形成された円形の溶着用突起４によって構成されている。以下の説明において、プロジェクションボルトを単にボルトと表現する場合もある。  As the parts supplied by the present invention, there are various parts such as a projection bolt which is a shaft-like part and a long and narrow rectangular parallelepiped part. As shown in FIG. 1 (A), the components supplied in this embodiment are iron projection bolts 1, a shaft portion 2 having a male screw cut therein, a circular flange portion 3 formed integrally therewith, It is comprised by the circular welding protrusion 4 formed in the center part of the flange part 3 on the opposite side to the axial part 2. As shown in FIG. In the following description, the projection bolt may be simply expressed as a bolt.

つぎに、電極について説明する。  Next, the electrodes will be described.

ボルト１が供給される目的箇所としては種々な箇所があるが、ここでの目的箇所は、電気抵抗溶接における電極の受入孔である。可動電極５は図１（Ａ）の上下方向に進退するようになっており、可動電極５の電極軸線Ｏ−Ｏに沿って、受入孔６が開けられていて可動電極５の下面に開口している。また、可動電極５に対向している固定電極は、図示していないが、図４に示した固定電極６６や鋼板部品６７と同様な構成とされている。  There are various target locations to which the bolt 1 is supplied. The target location here is an electrode receiving hole in electric resistance welding. The movable electrode 5 advances and retreats in the vertical direction of FIG. 1A, and a receiving hole 6 is opened along the electrode axis OO of the movable electrode 5 so as to open on the lower surface of the movable electrode 5. ing. In addition, the fixed electrode facing the movable electrode 5 is not shown, but has the same configuration as the fixed electrode 66 and the steel plate part 67 shown in FIG.

つぎに、供給装置について説明する。  Next, the supply device will be described.

軸部２を受入孔６に挿入するために供給装置１００が設けてある。供給装置１００の形式としては、供給ロッドが水平方向に進退し、電極軸線Ｏ−Ｏ方向に昇降する形式のものや、供給ロッドが斜め方向に進退し、電極軸線Ｏ−Ｏ方向に昇降する形式のものなど種々なものがある。ここでは、後者の形式である。  A supply device 100 is provided for inserting the shaft portion 2 into the receiving hole 6. As a form of the supply device 100, a form in which the supply rod advances and retreats in the horizontal direction and moves up and down in the electrode axis OO direction, and a form in which the supply rod advances and retreats in the oblique direction and moves up and down in the electrode axis OO direction. There are various things such as those. Here, it is the latter form.

傾斜姿勢で配置したエアシリンダ７のピストンロッド８によって供給ロッド９が進退するようになっている。前記エアシリンダ７にブラケット１０が結合され、その下側に挿入エアシリンダ１２が配置してある。この挿入エアシリンダ１２は、機枠などの静止部材１３に固定してあり、そのピストンロッド１４は電極軸線Ｏ−Ｏと平行な方向に進退するようになっている。  The supply rod 9 is advanced and retracted by the piston rod 8 of the air cylinder 7 arranged in an inclined posture. A bracket 10 is coupled to the air cylinder 7, and an insertion air cylinder 12 is disposed below the bracket 10. This insertion air cylinder 12 is fixed to a stationary member 13 such as a machine frame, and its piston rod 14 advances and retreats in a direction parallel to the electrode axis OO.

供給ロッド９の先端部に、保持部材である保持ヘッド１５が結合してある。この保持ヘッド１５は、円形のブロック状部材に機械加工を施したものであり、上方に開放している円形の保持凹部１６が設けられ、ここにフランジ部３が収容される。保持凹部１６の底部に、溶着用突起４が受け入れられる円形の中央凹部１７が形成され、これによって環状の段部１８が形成されている。したがって、フランジ部３が保持凹部１６に収容されているときには、フランジ部３の平坦な外周側の端面部分が段部１８に着座し、溶着用突起４は中央凹部１７内に突き出ている。  A holding head 15, which is a holding member, is coupled to the distal end portion of the supply rod 9. The holding head 15 is obtained by machining a circular block-like member, and is provided with a circular holding recess 16 that is open upward, and the flange portion 3 is accommodated therein. A circular central recess 17 in which the welding projection 4 is received is formed at the bottom of the holding recess 16, thereby forming an annular step 18. Therefore, when the flange portion 3 is accommodated in the holding recess 16, the flat end surface portion on the outer peripheral side of the flange portion 3 is seated on the step portion 18, and the welding protrusion 4 protrudes into the central recess 17.

静止部材１３にパーツフィーダ（図示していない）から延びてきている部品供給管２２が固定され、供給ロッド９が最も後退した位置で保持凹部１６にボルト１が移載されるようになっている。  A component supply pipe 22 extending from a parts feeder (not shown) is fixed to the stationary member 13, and the bolt 1 is transferred to the holding recess 16 at a position where the supply rod 9 is most retracted. .

つぎに、第１磁石および第２磁石について説明する。  Next, the first magnet and the second magnet will be described.

フランジ部３を保持凹部１６内に安定した状態で保持するために、保持ヘッド１５に第１磁石１９が取り付けられている。この第１磁石１９は保持ヘッド１５の中心部に挿入孔２０が開けられ、そこに埋め込んである。なお、符号２１は蓋部材である。そして、第１磁石１９は、永久磁石で構成してある。  A first magnet 19 is attached to the holding head 15 in order to hold the flange portion 3 in the holding recess 16 in a stable state. The first magnet 19 has an insertion hole 20 in the center of the holding head 15 and is embedded there. Reference numeral 21 denotes a lid member. And the 1st magnet 19 is comprised with the permanent magnet.

図１は、エアシリンダ７の動作で供給ロッド９が進出した状態を示しており、軸部２が電極軸線Ｏ−Ｏと同軸になった位置で供給ロッド９の進出が停止するようになっている。この停止状態では、第１磁石１９の中心線も電極軸線Ｏ−Ｏと合致している。第１磁石１９の磁力線がボルト１の軸部２に沿って、すなわちボルト１の軸線方向に透過するように、第１磁石１９の極性が設定されている。図１に示した第１磁石１９の上側と下側にＮ極とＳ極が配置してある。  FIG. 1 shows a state in which the supply rod 9 has advanced by the operation of the air cylinder 7, and the advancement of the supply rod 9 stops at a position where the shaft portion 2 is coaxial with the electrode axis OO. Yes. In this stopped state, the center line of the first magnet 19 also coincides with the electrode axis OO. The polarity of the first magnet 19 is set so that the magnetic lines of force of the first magnet 19 are transmitted along the shaft portion 2 of the bolt 1, that is, in the axial direction of the bolt 1. An N pole and an S pole are arranged on the upper and lower sides of the first magnet 19 shown in FIG.

可動電極５の受入孔６に挿入されたボルト１を保持するために、第２磁石２３が受入孔６の奥部に取り付けてある。第２磁石２３の中心線も電極軸線Ｏ−Ｏと合致している。第２磁石２３の磁力線がボルト１の軸部２に沿って、すなわちボルト１の軸線方向に透過するように、第２磁石２３の極性が設定されている。図１に示した第２磁石２３の上側と下側にＳ極とＮ極が配置してある。そして、第２磁石２３の磁力は第１磁石１９の磁力よりも強く設定してある。そして、第２磁石２３は、永久磁石で構成してある。  In order to hold the bolt 1 inserted into the receiving hole 6 of the movable electrode 5, a second magnet 23 is attached to the inner part of the receiving hole 6. The center line of the second magnet 23 also coincides with the electrode axis OO. The polarity of the second magnet 23 is set so that the magnetic field lines of the second magnet 23 are transmitted along the shaft portion 2 of the bolt 1, that is, in the axial direction of the bolt 1. S and N poles are arranged on the upper and lower sides of the second magnet 23 shown in FIG. The magnetic force of the second magnet 23 is set to be stronger than the magnetic force of the first magnet 19. And the 2nd magnet 23 is comprised with the permanent magnet.

なお、第２磁石２３を可動電極５内に格納する具体的な構造は、後述する。  A specific structure for storing the second magnet 23 in the movable electrode 5 will be described later.

つぎに、供給装置の動作を説明する。  Next, the operation of the supply device will be described.

供給ロッド９が進出して軸部２が電極軸線Ｏ−Ｏと同軸になった位置で停止する。ついで、挿入エアシリンダ１２の動作でエアシリンダ７全体が上昇すると、軸部２が受入孔６内に挿入され、第２磁石２３の強い磁力でボルト１が受入孔６内に保持される。上記の動作から明らかなように、ボルト１や保持部材である保持ヘッド１５の移動方向は、電極軸線Ｏ−Ｏの方向と同じである。  The supply rod 9 advances and stops at a position where the shaft portion 2 is coaxial with the electrode axis OO. Next, when the entire air cylinder 7 is raised by the operation of the insertion air cylinder 12, the shaft portion 2 is inserted into the receiving hole 6, and the bolt 1 is held in the receiving hole 6 by the strong magnetic force of the second magnet 23. As is clear from the above operation, the moving direction of the bolt 1 and the holding head 15 as a holding member is the same as the direction of the electrode axis OO.

つぎに、第１磁石と第２磁石の極性について説明する。  Next, the polarities of the first magnet and the second magnet will be described.

図１（Ｂ）および（Ｃ）に示すように、前記保持ヘッド１５に取り付けた部品保持用の第１磁石１９の極性が、ボルト１のほぼ移動方向で見て、受入孔６に取り付けた部品保持用の第２磁石２３の極性に対して、逆に設定されている。  As shown in FIGS. 1 (B) and 1 (C), the polarity of the first magnet 19 for holding components attached to the holding head 15 is attached to the receiving hole 6 when the polarity of the first magnet 19 is substantially seen in the moving direction of the bolt 1. The polarity is set opposite to the polarity of the second magnet 23 for holding.

つぎに、部品移動と極性の変化について説明する。  Next, component movement and polarity change will be described.

図１（Ｂ）は、挿入エアシリンダ１２が最も縮小した状態であり、保持ヘッド１５の移動開始前の状態を示している。この状態では、第１磁石１９の磁力線（磁界）２４はボルト１だけを透過しているので、フランジ部３は前記段部１８に吸引され、保持ヘッド１５は安定した状態で保持されている。  FIG. 1B shows a state in which the insertion air cylinder 12 is most contracted, and shows a state before the holding head 15 starts to move. In this state, the magnetic force line (magnetic field) 24 of the first magnet 19 transmits only the bolt 1, so that the flange portion 3 is attracted to the step portion 18 and the holding head 15 is held in a stable state.

上記の移動開始前の状態では、ボルト１の先端部と第２磁石２３の間隔が大きいので、第２磁石２３の磁力線（磁界）２５の領域はボルト１から離隔した状態になっていて、第２磁石２３からの磁気的影響はボルト１に対して及ぶことがない。そして、このときにはボルト１の移動方向で見たボルト１の先端部は、第１磁石１９の磁力線２４の透過によって第１磁石１９の極性と同じＮ極になっているとともに、ボルト１の移動方向後端部であるフランジ部３や溶着用突起４の極性Ｓ極に対して、第１磁石１９のボルト１側の極性がＮ極になっていて、ボルト１は第１磁石１９に吸引されている。上記の状態は、図２（Ａ）に示す段階である。  In the state before the start of the movement, since the distance between the tip of the bolt 1 and the second magnet 23 is large, the region of the magnetic lines of force (magnetic field) 25 of the second magnet 23 is separated from the bolt 1. The magnetic influence from the two magnets 23 does not reach the bolt 1. At this time, the tip of the bolt 1 as viewed in the moving direction of the bolt 1 has the same N pole as the polarity of the first magnet 19 due to the transmission of the magnetic field lines 24 of the first magnet 19, and the moving direction of the bolt 1. The polarity on the bolt 1 side of the first magnet 19 is N pole with respect to the polarity S pole of the flange portion 3 and the welding projection 4 which are the rear ends, and the bolt 1 is attracted to the first magnet 19. Yes. The above state is the stage shown in FIG.

上記の極性の状態で保持ヘッド１５が第２磁石２３の方へ移動を開始してボルト１が第２磁石２３の磁界内に進入すると、進入初期の段階では、ボルト先端部の極性Ｎ極と第２磁石２３のボルト１側の極性Ｎ極が同じであるため、ボルト先端部と第２磁石２３とは反発する関係となるが、ボルト先端部と第２磁石２３（断熱片２７の下端部）との間隔が大きいので、実質的には反発力は発生しない。上記の状態は、図２（Ｂ）に示す段階である。  When the holding head 15 starts moving toward the second magnet 23 in the state of the above polarity and the bolt 1 enters the magnetic field of the second magnet 23, the polarity N pole at the tip of the bolt and Since the polarity N pole on the bolt 1 side of the second magnet 23 is the same, the bolt tip and the second magnet 23 are repelled, but the bolt tip and the second magnet 23 (the lower end of the heat insulating piece 27). ), The repulsive force is practically not generated. The above state is the stage shown in FIG.

これに引き続いて保持ヘッド１５がさらに第２磁石２３の方へ移動すると、ボルト１は図１（Ｃ）に示すように、第２磁石２３の磁界内に置かれ、第２磁石２３の磁力が第１磁石１９のそれよりも強いので、第２磁石２３の磁力線がボルト１を透過する。このため、ボルト先端部の極性がＮ極からＳ極に変換されて、第２磁石２３のボルト側極性とは逆となる。同時に、ボルト１の移動方向後端部の極性はＳ極からＮ極に変換されて、第１磁石１９のボルト側極性と同じになる。  Subsequently, when the holding head 15 further moves toward the second magnet 23, the bolt 1 is placed in the magnetic field of the second magnet 23 as shown in FIG. Since it is stronger than that of the first magnet 19, the magnetic lines of force of the second magnet 23 pass through the bolt 1. For this reason, the polarity of the bolt tip is converted from the N pole to the S pole, which is opposite to the bolt side polarity of the second magnet 23. At the same time, the polarity of the rear end portion in the moving direction of the bolt 1 is converted from the S pole to the N pole, and becomes the same as the bolt side polarity of the first magnet 19.

したがって、ボルト１と第２磁石２３との間では吸引力が発生し、ボルト１と第１磁石１９との間では反発力が発生する。上記の吸引現象による力と反発現象による力が相乗されて、ボルト１を目的箇所である受入孔６の奥部へ到達させる総合的な力が十分な値として確実にえられる。上記の進入初期の段階における反発関係は、ボルト先端部と第２磁石２３との間の距離が長いので、実質的に反発力は発生せず、保持ヘッド１５の移動に支障を来すことはない。上記の状態は、図２（Ｃ）と（Ｄ）に示す段階である。（Ｄ）は、保持ヘッド１５から第２磁石２３に向かってボルト１が空中移動をしている過渡的な段階を示している。したがって、（Ｃ）図と（Ｄ）図における保持ヘッド１５と可動電極５の下面との間隔は、同じである。  Accordingly, an attractive force is generated between the bolt 1 and the second magnet 23, and a repulsive force is generated between the bolt 1 and the first magnet 19. The force due to the above-described suction phenomenon and the force due to the repulsion phenomenon are combined, and the total force for reaching the bolt 1 to the inner part of the receiving hole 6 which is the target location can be reliably obtained as a sufficient value. The repulsion relationship at the initial stage of the entry is that the distance between the bolt tip and the second magnet 23 is long, so that substantially no repulsive force is generated and the movement of the holding head 15 is hindered. Absent. The above state is the stage shown in FIGS. 2 (C) and (D). (D) shows a transitional stage in which the bolt 1 is moving in the air from the holding head 15 toward the second magnet 23. Therefore, the distance between the holding head 15 and the lower surface of the movable electrode 5 in FIGS. (C) and (D) is the same.

つぎに、第２磁石の配置構造を説明する。  Next, the arrangement structure of the second magnet will be described.

第２磁石２３は、受入孔６の内径よりも大きな外径のカップ状の容器２６内に収容され、円柱形の断熱片２７が第２磁石２３に密着した状態で容器２６に溶接してある。断熱片２７は受入孔６内に突き出ている。受入孔６の内径よりも大きな内径とされた大径孔２８内に、容器２６が摺動可能な状態で挿入されている。容器２６と大径孔２８の内端面２９の間に、圧縮コイルばね３０が挿入されている。溶着用突起４が鋼板部品（図示していない）に押し付けられると、圧縮コイルばね３０が圧縮されてフランジ部３が可動電極５の下端面に密着するようになっている。  The second magnet 23 is accommodated in a cup-shaped container 26 having an outer diameter larger than the inner diameter of the receiving hole 6, and is welded to the container 26 in a state where a cylindrical heat insulating piece 27 is in close contact with the second magnet 23. . The heat insulating piece 27 protrudes into the receiving hole 6. A container 26 is slidably inserted into a large-diameter hole 28 having an inner diameter larger than the inner diameter of the receiving hole 6. A compression coil spring 30 is inserted between the container 26 and the inner end face 29 of the large diameter hole 28. When the welding projection 4 is pressed against a steel plate part (not shown), the compression coil spring 30 is compressed and the flange portion 3 comes into close contact with the lower end surface of the movable electrode 5.

上記断熱片２７は、第２磁石２３に伝達される溶接熱の熱量を少なくするために配置してあり、同時に第２磁石２３の一部を構成している。したがって、断熱片２７は磁性材料である鉄が使用されている。このため上述のように、第２磁石２３の下側、すなわちボルト１側の極性は、断熱片２７の下端部に現れる。一方、容器２６は非磁性材料であるステンレス鋼で作られている。なお、可動電極５の本体や保持ヘッド１５は非磁性材料で作られており、可動電極本体はクロム銅、保持ヘッド１５はステンレス鋼で作られている。このようにして、第２磁石２３の磁力を効果的にボルト１へ作用させている。  The heat insulating piece 27 is arranged to reduce the amount of welding heat transmitted to the second magnet 23, and at the same time constitutes a part of the second magnet 23. Therefore, iron which is a magnetic material is used for the heat insulating piece 27. Therefore, as described above, the polarity on the lower side of the second magnet 23, that is, the bolt 1 side, appears at the lower end of the heat insulating piece 27. On the other hand, the container 26 is made of stainless steel, which is a nonmagnetic material. The main body of the movable electrode 5 and the holding head 15 are made of a nonmagnetic material, the movable electrode main body is made of chrome copper, and the holding head 15 is made of stainless steel. In this way, the magnetic force of the second magnet 23 is effectively applied to the bolt 1.

保持部材は、前記ボルト１を受入孔６へ供給する供給装置１００の保持ヘッド１５「またはその一部」を形成する部材であると表現しているのは、例えば、保持ヘッド１５の保持機能を果たす保持凹部１６のような構造部以外に、保持ヘッド１５と供給ロッド９を一体化するための結合構造部が付随している場合などがあるためである。  The holding member is expressed as a member that forms the holding head 15 “or a part thereof” of the supply device 100 that supplies the bolt 1 to the receiving hole 6, for example, the holding function of the holding head 15. This is because, in addition to the structure portion such as the holding concave portion 16 to be fulfilled, there may be a case where a coupling structure portion for integrating the holding head 15 and the supply rod 9 is attached.

なお、上記各種のエアシリンダに換えて、進退出力をする電動モータを採用することもできる。また、上記各種の永久磁石を電磁石に置き換えることも可能である。  It should be noted that an electric motor that performs forward / backward output can be employed instead of the various air cylinders. It is also possible to replace the various permanent magnets with electromagnets.

上述の動作は、一般的に採用されている制御手法で容易に行わせることが可能である。制御装置またはシーケンス回路からの信号で動作する空気切換弁や、エアシリンダの所定位置で信号を発して前記制御装置に送信するセンサー等を組み合わせることによって、所定の動作を確保することができる。  The above-described operation can be easily performed by a generally employed control method. A predetermined operation can be ensured by combining an air switching valve that operates with a signal from the control device or the sequence circuit, a sensor that emits a signal at a predetermined position of the air cylinder, and transmits the signal to the control device.

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

前記保持ヘッド１５に取り付けたボルト保持用の第１磁石１９の極性が、ボルト１のほぼ移動方向で見て、前記目的箇所である受入孔６の奥に取り付けたボルト保持用の第２磁石２３の極性に対して逆に設定されている。つまり、図１（Ｂ）において、第１磁石１９の上側がＮ極、下側がＳ極であり、第２磁石２３の上側がＳ極、下側（断熱片２７の下端部）がＮ極とされている。そして、第２磁石２３の磁力が第１磁石１９の磁力よりも強く設定してある。  The polarity of the first magnet 19 for holding the bolt attached to the holding head 15 is the second magnet 23 for holding the bolt attached to the back of the receiving hole 6 which is the target position when the polarity of the first magnet 19 is viewed in the moving direction of the bolt 1. It is set opposite to the polarity. That is, in FIG. 1B, the upper side of the first magnet 19 is the N pole, the lower side is the S pole, the upper side of the second magnet 23 is the S pole, and the lower side (the lower end portion of the heat insulating piece 27) is the N pole. Has been. The magnetic force of the second magnet 23 is set to be stronger than the magnetic force of the first magnet 19.

このため、図１（Ｂ）に示すように、保持ヘッド１５の移動開始前においては、第１磁石１９によって保持ヘッド１５に保持されたボルト１の先端部と第２磁石２３（断熱片２７の下端部）の間隔が大きいので、第２磁石２３の磁界（磁力線２５）の領域はボルト１から離隔した状態になっていて、第２磁石２３からの磁気的影響はボルト１に対して及ぶことがない。そして、このときにはボルト１の移動方向、すなわち電極軸線Ｏ−Ｏの方向で見たボルト１の先端部は、第１磁石１９の磁力線の透過によって第１磁石の極性と同じＮ極になっているとともに、ボルト１の移動方向後端部の極性はＳ極となっている。そして、第１磁石１９のボルト１側の極性はＮ極になっているから、ボルト１は第１磁石１９に吸引されている。  For this reason, as shown in FIG. 1B, before the movement of the holding head 15 starts, the tip of the bolt 1 held by the holding head 15 by the first magnet 19 and the second magnet 23 (of the heat insulating piece 27). Since the distance between the lower ends is large, the region of the magnetic field (lines of magnetic force 25) of the second magnet 23 is separated from the bolt 1, and the magnetic influence from the second magnet 23 affects the bolt 1. There is no. At this time, the front end of the bolt 1 viewed in the moving direction of the bolt 1, that is, in the direction of the electrode axis OO, has the same N pole as the polarity of the first magnet due to the transmission of the magnetic lines of force of the first magnet 19. At the same time, the polarity at the rear end of the bolt 1 in the moving direction is the S pole. Since the polarity of the first magnet 19 on the bolt 1 side is N pole, the bolt 1 is attracted to the first magnet 19.

この極性の状態で保持ヘッド１５が第２磁石２３の方へ移動を開始してボルト１が第２磁石２３の磁界内に進入すると、進入初期の段階では、ボルト先端部の極性Ｎ極と第２磁石２３（断熱片２７の下端部）のボルト側の極性Ｎ極が同じであるため、部品先端部と第２磁石２３とは反発する関係となるが、ボルト先端部と第２磁石２３（断熱片２７の下端部）との間隔が大きいので、実質的には反発力は発生しない。  In this state of polarity, when the holding head 15 starts moving toward the second magnet 23 and the bolt 1 enters the magnetic field of the second magnet 23, at the initial stage of entry, the polarity N pole of the bolt tip and the second pole Since the polarity N pole on the bolt side of the two magnets 23 (the lower end portion of the heat insulating piece 27) is the same, the component tip portion and the second magnet 23 are repelled, but the bolt tip portion and the second magnet 23 ( Since the distance from the lower end portion of the heat insulating piece 27 is large, substantially no repulsive force is generated.

これに引き続いて保持ヘッド１５がさらに第２磁石２３の方へ移動すると、ボルト１は第２磁石２３の磁界内に置かれ、第２磁石２３の磁力が第１磁石１９のそれよりも強いので、第２磁石２３の磁力線がボルト１を透過する。このため、図１（Ｃ）に示すように、ボルト先端部の極性が第２磁石２３の部品側極性Ｎ極とは逆のＳ極となり、同時に、ボルト１の移動方向後端部の極性はＮ極となって第１磁石１９のボルト側極性と同じＮ極になる。したがって、ボルト１と第２磁石２３（断熱片２７の下端部）との間では吸引力が発生し、ボルト１と第１磁石１９との間では反発力が発生する。上記の吸引現象による力と反発現象による力が相乗されて、ボルト１を目的箇所へ到達させる総合的な力が十分な値として確実にえられる。上記の進入初期の段階における反発関係は、ボルト１先端部と第２磁石２３（断熱片２７の下端部）との間の距離が長いので、実質的に反発力は発生せず、保持ヘッド１５の移動に支障を来すことはない。  Subsequently, when the holding head 15 moves further toward the second magnet 23, the bolt 1 is placed in the magnetic field of the second magnet 23, and the magnetic force of the second magnet 23 is stronger than that of the first magnet 19. The magnetic field lines of the second magnet 23 pass through the bolt 1. For this reason, as shown in FIG. 1C, the polarity of the bolt tip is the S pole opposite to the component side polarity N pole of the second magnet 23, and at the same time, the polarity of the rear end of the bolt 1 in the moving direction is The N pole becomes the same N pole as the bolt side polarity of the first magnet 19. Therefore, an attractive force is generated between the bolt 1 and the second magnet 23 (the lower end portion of the heat insulating piece 27), and a repulsive force is generated between the bolt 1 and the first magnet 19. The force due to the above-mentioned suction phenomenon and the force due to the repulsion phenomenon are synergistically obtained, and the total force for reaching the bolt 1 to the target location can be obtained as a sufficient value. In the repulsion relationship in the initial stage of the above approach, since the distance between the front end of the bolt 1 and the second magnet 23 (the lower end of the heat insulating piece 27) is long, substantially no repulsive force is generated, and the holding head 15 There will be no hindrance to movement.

第１磁石１９と第２磁石２３の極性が、ボルト１の移動方向で見て逆に設定してあるとともに、第２磁石２３の磁力が第１磁石１９の磁力よりも強く設定してあるので、保持ヘッド１５が第２磁石２３の方へ移動すると、ボルト１は第１磁石１９よりも強められている第２磁石２３の磁気力で吸引される。この吸引と同時に、ボルト１の移動方向後端部の極性と第１磁石１９のボルト側の極性が同極性となって、ここにボルト１を反発する力が発生する。上述のように、ボルト１の移動方向後端部（フランジ部３や溶着用突起４など）の極性と第１磁石１９のボルト側の極性が同極性となるのは、磁力が第１磁石１９よりも強められている第２磁石２３の磁界内にボルト１が存在させられることにより、第２磁石２３の磁力線２５がボルト１を透過してボルト１の移動方向後端部の極性が第２磁石の極性と同じになるためである。  Since the polarities of the first magnet 19 and the second magnet 23 are set oppositely when viewed in the moving direction of the bolt 1, the magnetic force of the second magnet 23 is set stronger than the magnetic force of the first magnet 19. When the holding head 15 moves toward the second magnet 23, the bolt 1 is attracted by the magnetic force of the second magnet 23 that is stronger than the first magnet 19. Simultaneously with this attraction, the polarity of the rear end of the bolt 1 in the moving direction and the polarity of the first magnet 19 on the bolt side become the same polarity, and a force to repel the bolt 1 is generated here. As described above, the polarity of the rear end portion of the bolt 1 in the moving direction (the flange portion 3 and the welding projection 4 and the like) and the polarity of the first magnet 19 on the bolt side are the same polarity. When the bolt 1 is present in the magnetic field of the second magnet 23 that is further strengthened, the magnetic field lines 25 of the second magnet 23 pass through the bolt 1 and the polarity of the rear end portion in the moving direction of the bolt 1 is the second. This is because the polarity is the same as that of the magnet.

上述のように、第１磁石１９と第２磁石２３が永久磁石で構成されているとともに、両磁石の極性が逆であることと、両磁石の磁力に大小差が付与されていることによって、ボルト１が第２磁石２３の方へ移動させられると、自動的にボルト自体の極性が変換されて、吸引現象による力と反発現象による力が相乗されるのである。As described above, the first magnet 19 and the second magnet 23 are composed of permanent magnets, the polarities of both magnets are reversed, and the magnitude difference is given to the magnetic force of both magnets. When the bolt 1 is moved toward the second magnet 23, the polarity of the bolt itself is automatically converted, and the force due to the attraction phenomenon and the force due to the repulsion phenomenon are combined.

したがって、上記吸引と反発の相乗作用により十分な値の力がえられるので、ボルト１の質量が大きい場合であっても、前述の磁石寸法の大小差を大きくすることなく、制約された箇所において小型の磁石を配置して、スペース的に有利な条件で磁石配置をすることができる。また、ボルト１の移動力が不足することを補うために、保持ヘッド１５からボルト１に対して空気噴射を行うことが行われているが、このような空気噴射は空気通路や噴射制御などにおいて構造が複雑になりとともに、圧縮空気の節約においても不経済である。本実施例では、このような問題も一掃されるという効果がある。  Therefore, since a sufficient value of force can be obtained by the synergistic action of the attraction and repulsion, even in the case where the mass of the bolt 1 is large, the above-described difference in the size of the magnet is not increased, and in a restricted place. By arranging small magnets, it is possible to arrange the magnets under conditions that are advantageous in terms of space. Further, in order to compensate for the shortage of the moving force of the bolt 1, air injection is performed from the holding head 15 to the bolt 1. Such air injection is performed in an air passage or injection control. In addition to the complexity of the structure, it is also uneconomical in saving compressed air. In this embodiment, there is an effect that such a problem is eliminated.

前記部品がプロジェクションボルトなどの軸状部品であり、電気抵抗溶接電極５にボルト１が挿入される受入孔６が形成され、この受入孔６の奥部に第２磁石２３が取付けられ、前記保持部材は、前記ボルト１を前記受入孔６へ供給する供給装置１００の保持ヘッド１５またはその一部を形成する部材であり、前記保持部材に前記第１磁石１９が取り付けられている電気抵抗溶接装置用の部品供給構造部である。  The component is a shaft-shaped component such as a projection bolt, and a receiving hole 6 into which the bolt 1 is inserted is formed in the electric resistance welding electrode 5. A second magnet 23 is attached to the back of the receiving hole 6, and the holding The member is a member that forms the holding head 15 of the supply device 100 that supplies the bolt 1 to the receiving hole 6 or a part thereof, and the electric resistance welding apparatus in which the first magnet 19 is attached to the holding member. This is a component supply structure unit for use.

前記部品供給構造部を電気抵抗溶接装置に適用したものであり、ボルト１の移動に伴うボルト１自体の極性変換や、吸引・反発の現象は前記部品供給構造部と同じである。さらに、前述のように、第２磁石２３を小型のものとすることができるので、前記受入孔６の奥部、すなわち電極５の内部のようにスペース的に制約のある箇所であっても、支障なく磁石配置が可能となる。  The component supply structure is applied to an electric resistance welding apparatus, and the polarity conversion of the bolt 1 itself and the phenomenon of suction / repulsion accompanying the movement of the bolt 1 are the same as those of the component supply structure. Furthermore, as described above, since the second magnet 23 can be made small, even in the inner part of the receiving hole 6, that is, in a place where there is a space restriction such as the inside of the electrode 5, Magnet arrangement is possible without hindrance.

方法の発明の実施例は、部品供給構造部の実施例と同様であり、保持ヘッド１５を移動することによって前記保持ヘッド１５に保持した磁性材料製のボルト１を目的箇所へ到達させるものであって、前記保持ヘッド１５に取り付けた部品保持用の第１磁石１９の極性が、ボルト１のほぼ移動方向で見て、前記目的箇所に取り付けたボルト保持用の第２磁石２３の極性に対して逆に設定され、前記第２磁石２３の磁力が第１磁石１９の磁力よりも強く設定してある部品供給構造部を準備し、前記第１磁石１９の吸引力によって保持ヘッド１５に保持されたボルト１を、前記目的箇所の方へ移動させてボルト１を第２磁石２３の磁界内に存在させることにより、ボルト１を第２磁石２３で吸引するとともに、ボルト１の移動方向後端部の極性と第１磁石１９のボルト側の極性を同極性にして、ボルト１と第１磁石１９との間に反発力が生じるようにした。  The embodiment of the method invention is the same as the embodiment of the component supply structure, and the bolt 1 made of a magnetic material held by the holding head 15 is made to reach the target location by moving the holding head 15. Thus, the polarity of the first magnet 19 for holding the component attached to the holding head 15 is substantially the same as the polarity of the second magnet 23 for holding the bolt attached to the target location as viewed in the direction of movement of the bolt 1. On the contrary, a component supply structure portion is prepared in which the magnetic force of the second magnet 23 is set to be stronger than the magnetic force of the first magnet 19, and is held by the holding head 15 by the attractive force of the first magnet 19. By moving the bolt 1 toward the target location and causing the bolt 1 to be present in the magnetic field of the second magnet 23, the bolt 1 is attracted by the second magnet 23, and at the rear end of the bolt 1 in the moving direction. Polarity and number The polarity of the bolt side of the magnet 19 in the same polarity, and so the bolt 1 and the repulsive force between the first magnet 19 occurs.

上記方法の実施例の作用効果は、前記部品供給構造部の実施例の作用効果と同じである。  The operational effects of the embodiment of the above method are the same as the operational effects of the embodiment of the component supply structure.

上記方法の実施例として、前記部品がプロジェクションボルトなどの軸状部品を電気抵抗溶接で溶接している。電気抵抗溶接電極５にボルト１が挿入される受入孔６が形成され、この受入孔６の奥部に第２磁石２３が取付けられ、前記保持部材は、ボルト１を受入孔６へ供給する供給装置１００の保持ヘッド１５またはその一部を形成する部材であり、前記保持部材に第１磁石１９が取り付けられている。  As an embodiment of the above method, the part is welded to a shaft-like part such as a projection bolt by electric resistance welding. A receiving hole 6 into which the bolt 1 is inserted is formed in the electric resistance welding electrode 5, a second magnet 23 is attached to the back of the receiving hole 6, and the holding member supplies the bolt 1 to the receiving hole 6. It is a member that forms the holding head 15 of the apparatus 100 or a part thereof, and a first magnet 19 is attached to the holding member.

プロジェクションボルト１の移動に伴うボルト自体の極性変換や吸引・反発の現象は、前述の部品供給構造部のものと同じである。さらに、ボルト１に対して吸引と反発が同時に作用するので、受入孔６の奥まで勢いよくボルト挿入が可能となる。また、何等かの原因で軸部２が受入孔６の開口角部に擦れるようなことがあっても、ボルト１を受入孔６内へ導入する力が十分に確保できるので、このような擦れの場合であっても確実にボルト挿入が可能となる。  The phenomenon of the polarity conversion and suction / repulsion of the bolt itself accompanying the movement of the projection bolt 1 is the same as that of the component supply structure described above. Furthermore, since suction and repulsion act on the bolt 1 simultaneously, the bolt can be vigorously inserted to the depth of the receiving hole 6. Even if the shaft portion 2 rubs against the opening corner of the receiving hole 6 for any reason, the force for introducing the bolt 1 into the receiving hole 6 can be sufficiently secured. Even in this case, the bolt can be surely inserted.

図３は、本発明の実施例２を示す。  FIG. 3 shows a second embodiment of the present invention.

この実施例２は、部品３２が鉄製の直方体型部材の場合であり、部品の移動方向がやや斜め下から移動するようになっている。また、部品供給の目的箇所は、静止部材１３に固定したブロック部材３３の平坦な下端面３４である。それ以外の構成は、図示されていない部分も含めて先の実施例１と同じであり、同様な機能の部材には同一の符号が記載してある。  The second embodiment is a case where the component 32 is a rectangular parallelepiped member made of iron, and the moving direction of the component is moved slightly obliquely from below. Further, the target location for the component supply is the flat lower end surface 34 of the block member 33 fixed to the stationary member 13. Other configurations are the same as those of the first embodiment including the portions not shown, and members having the same functions are denoted by the same reference numerals.

本実施例２のように、部品の形状や目的箇所の形状が先の実施例１とは異なっていても、実施例１と同様な作用効果がえられる。  As in the second embodiment, even if the shape of the part and the shape of the target portion are different from those of the first embodiment, the same effects as those of the first embodiment can be obtained.

上述のように、本発明の構造部や方法によれば、磁石の極性を所定の極性に設定することにより、部品を目的箇所へ到達させる力を大きくすることができる。したがって、自動車の車体溶接工程や、家庭電化製品の板金溶接工程などの広い産業分野で利用できる。  As described above, according to the structure part and the method of the present invention, the force for causing the component to reach the target location can be increased by setting the polarity of the magnet to a predetermined polarity. Therefore, it can be used in a wide range of industrial fields such as automobile body welding processes and home appliance sheet metal welding processes.

１ プロジェクションボルト、部品
２ 軸部
３ フランジ部
５ 可動電極
Ｏ−Ｏ 電極軸線
６ 受入孔
９ 供給ロッド
１３ 静止部材
１５ 保持部材、保持ヘッド
１９ 第１磁石
２３ 第２磁石
２４ 磁力線（磁界）
２５ 磁力線（磁界）
３２ 部品
３４ 下端面DESCRIPTION OF SYMBOLS 1 Projection bolt, components 2 Shaft part 3 Flange part 5 Movable electrode OO Electrode axis 6 Receiving hole 9 Supply rod 13 Static member 15 Holding member, holding head 19 1st magnet 23 2nd magnet 24 Magnetic field line (magnetic field)
25 Magnetic field lines (magnetic field)
32 Parts 34 Lower end surface

Claims (4)

保持部材を移動することによって前記保持部材に保持した磁性材料製の部品を目的箇所へ到達させるものであって、
前記保持部材に取り付けた部品保持用の第１磁石の極性が、部品のほぼ移動方向で見て、前記目的箇所に取り付けた部品保持用の第２磁石の極性に対して逆に設定され、前記第２磁石の磁力が第１磁石の磁力よりも強く設定してあり、前記第１磁石と第２磁石は永久磁石で構成され、
前記第１磁石の吸引力によって前記保持部材に保持された部品を、前記目的箇所の方へ移動させて前記部品を前記第２磁石の磁界内に存在させることにより、前記部品を前記第２磁石で吸引するとともに、前記部品の移動方向後端部の極性と前記第１磁石の部品側の極性を同極性にして、前記部品と前記第１磁石との間に反発力が生じるように構成したことを特徴とする部品供給構造部。By moving the holding member, the magnetic material part held by the holding member is made to reach the target location,
The polarity of the first magnet for holding the component attached to the holding member is set to be opposite to the polarity of the second magnet for holding the component attached to the target location when viewed in the direction of movement of the component. tare force of the second magnet is set to be stronger than the magnetic force of the first magnet is, the first magnet and the second magnet is constituted by permanent magnets,
The component held by the holding member by the attraction force of the first magnet is moved toward the target location so that the component is present in the magnetic field of the second magnet, whereby the component is moved to the second magnet. And the polarity of the rear end portion in the moving direction of the component and the polarity of the component side of the first magnet are the same polarity so that a repulsive force is generated between the component and the first magnet. A component supply structure section. 前記部品がプロジェクションボルトなどの軸状部品であり、
電気抵抗溶接電極に前記軸状部品が挿入される受入孔が形成され、
この受入孔の奥部に前記第２磁石が取付けられ、
前記保持部材は、前記軸状部品を前記受入孔へ供給する供給装置の保持ヘッドまたはその一部を形成する部材であり、
前記保持部材に前記第１磁石が取り付けられている電気抵抗溶接装置用の請求項１記載の部品供給構造部。The component is a shaft-shaped component such as a projection bolt,
A receiving hole into which the shaft-shaped part is inserted into the electric resistance welding electrode is formed,
The second magnet is attached to the back of the receiving hole,
The holding member is a member that forms a holding head of a supply device that supplies the shaft-shaped component to the receiving hole or a part thereof,
The component supply structure part of Claim 1 for electrical resistance welding apparatuses with which the said 1st magnet is attached to the said holding member. 保持部材を移動することによって前記保持部材に保持した磁性材料製の部品を目的箇所へ到達させるものであって、
前記保持部材に取り付けた部品保持用の第１磁石の極性が、部品のほぼ移動方向で見て、前記目的箇所に取り付けた部品保持用の第２磁石の極性に対して逆に設定され、前記第２磁石の磁力が第１磁石の磁力よりも強く設定してある部品供給構造部を準備し、
前記第１磁石の吸引力によって前記保持部材に保持された部品を、前記目的箇所の方へ移動させて前記部品を前記第２磁石の磁界内に存在させることにより、前記部品を前記第２磁石で吸引するとともに、前記部品の移動方向後端部の極性と前記第１磁石の部品側の極性を同極性にして、前記部品と前記第１磁石との間に反発力が生じるようにしたことを特徴とする部品供給方法。By moving the holding member, the magnetic material part held by the holding member is made to reach the target location,
The polarity of the first magnet for holding the component attached to the holding member is set to be opposite to the polarity of the second magnet for holding the component attached to the target location when viewed in the direction of movement of the component. Preparing a component supply structure in which the magnetic force of the second magnet is set stronger than the magnetic force of the first magnet;
The component held by the holding member by the attraction force of the first magnet is moved toward the target location so that the component is present in the magnetic field of the second magnet, whereby the component is moved to the second magnet. And the polarity of the rear end portion in the moving direction of the component and the polarity of the component side of the first magnet are made the same polarity so that a repulsive force is generated between the component and the first magnet. A method for supplying parts. 前記部品がプロジェクションボルトなどの軸状部品であり、
電気抵抗溶接電極に前記軸状部品が挿入される受入孔が形成され、
この受入孔の奥部に前記第２磁石が取付けられ、
前記保持部材は、前記軸状部品を前記受入孔へ供給する供給装置の保持ヘッドまたはその一部を形成する部材であり、
前記保持部材に前記第１磁石が取り付けられている電気抵抗溶接における請求項３記載の部品供給方法。The component is a shaft-shaped component such as a projection bolt,
A receiving hole into which the shaft-shaped part is inserted into the electric resistance welding electrode is formed,
The second magnet is attached to the back of the receiving hole,
The holding member is a member that forms a holding head of a supply device that supplies the shaft-shaped component to the receiving hole or a part thereof,
The component supply method according to claim 3, wherein the first magnet is attached to the holding member in electric resistance welding.
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