JP4849248B2 - Parts supply device for electric resistance welding machine - Google Patents

Description

  The present invention relates to a component supply device used in an electric resistance welder.

It is known that a part is held on a supply rod which is a part supply member and supplied to a target location such as a guide pin or a receiving hole of an electric resistance welding electrode.
Japanese Patent No. 2832528 Japanese Patent No. 3306579

  In the case described above, only one component such as a projection nut or a projection bolt is supplied. Therefore, when a plurality of parts are welded to one steel plate part, there is a problem that the required time becomes long and productivity cannot be improved. Further, when supplying a plurality of parts, a structure of a supply device adapted to the shape of the counterpart steel plate part and the welding location is required. In particular, when supplying a plurality of parts, it is important that the parts are supplied accurately to the target location.

  Furthermore, even when a press device that applies plastic working to a long material plate and a welding device are continuously combined to operate both devices as a system, a plurality of parts must be welded to the press component. Is required. Even in this case, the above-mentioned requirements must be satisfied.

  The present invention has been provided to solve the above-described problems, and an object thereof is to provide a component supply apparatus for an electric resistance welder that can accurately and efficiently supply a plurality of components.

Means to solve the problem

According to the first aspect of the present invention, the component is supplied to the guide pin or the receiving hole of the electric resistance welding electrode which is the target location and welded to the steel plate component. The component supply member is provided with a plurality of holding portions so as to hold a plurality of components, and the component supply member is located at a predetermined position in the component supply member. Corresponding to multiple welds of steel plate parts in the advanced state,
The advancing direction of the component supply member is a direction toward the guide pin or the receiving hole of the electric resistance welding electrode, and the component supply member is made of a long and thick plate material, and a protruding portion (20) is formed at the end thereof. By providing, the end portion has a step shape shifted forward and backward as viewed in the advance direction of the component supply member, and by this step shape, the plurality of holding portions advance in the advance direction of the component supply member in the same manner as the step shape. When the component supply member is made of a long and thick plate material, the component supply member can be adapted to the curved and bent shape of the steel plate component. A component supply device for an electric resistance welding machine, wherein a downward projecting portion (39) is formed.

The invention's effect

  The plurality of parts held by the holding part exactly match the welded part of the steel plate part when the part supply member advances to a predetermined position. In this state, the component is supplied to the guide pin or the receiving hole, the component and the steel plate component are pressurized between the electrodes, and the welding current is applied to complete the welding.

  Therefore, since a plurality of parts are supplied at a time to a plurality of predetermined target locations, the parts can be efficiently supplied to the electric resistance welder, the welding process can be shortened, and the productivity can be reduced. Effective for improvement. Further, since the component holding position of the component supply member corresponds to the welded portion of the steel plate component, the component is accurately supplied to the target location, and the operation accuracy as the component supply device is improved.

Before SL component supplying member, Ru shape der that can be adapted to the shape of the curved or bent like of the steel sheet part.

  As described above, since the component supply member has a shape that can be adapted to the shape of the steel plate component, such as bending and bending, it can be accurately adapted to a steel plate component that is bent by press molding or given with drawing. In this state, it is possible to supply and weld a plurality of parts. That is, accurate component supply and welding are realized with accurate positioning for a steel plate component having a complicated shape.

Lifting means for moving the front SL component parts held by the supply member in the axial direction of the electric resistance welding electrodes that are attached to the reciprocating drive means.

  When the elevating means operates, the component held by the component supply member also moves in the electrode axis direction. The electrode is usually provided with a guide pin that is coaxial with the electrode axis, or a receiving hole that is coaxial with the electrode axis. Therefore, in the case of a part shaped like a projection nut, the nut is held with the guide pin passing through the screw hole of the nut by the movement of the part, and in the case of a part shaped like a projection bolt. The shaft of the bolt is inserted into the receiving hole by the movement of the component, and the bolt is held. In this way, parts such as nuts and bolts are accurately and efficiently supplied to the guide pins or receiving holes of the electrodes by the operation of the lifting means.

It is that provided suction means for holding the parts before Symbol holder.

  In this way, since the component is firmly adsorbed to the holding portion, even if vibration or some external force acts on the component when the component supply member advances, the component may be easily detached from the holding portion. Therefore, a highly reliable component supply operation can be obtained.

Supply passage means for supplying a component that is attached to the stationary member before Symbol holder.

  Since each supply passage means connected to the plurality of holding portions is attached to the stationary member, parts of a predetermined type and size are properly supplied to each holding portion, and the supply accuracy of the parts is always maintained.

Supply passage means for supplying a component before Symbol holder is installed in a component supplying member.

  Since the supply passage means moves forward and backward together with the component supply member, the next part can be guided from the supply passage means to the holding portion immediately after the part is supplied to the target location. Therefore, the next part can be introduced by using the time during which the part supply member is retracted, and the time can be reduced by synchronizing the introduction of the part into the holding part and the retreat of the part supply member. it can.

Before SL components, Ru projection nut der fed to the guide pin of the electric resistance welding electrodes.

  The guide pin relatively enters the screw hole of the projection nut. Therefore, the support state of the component at the target location is stabilized.

Before SL components, Ru projection bolt der supplied to the receiving hole of the electric resistance welding electrodes.

  The projection bolt enters the receiving hole. Therefore, the support state of the component at the target location is stabilized.

  Next, the best mode for carrying out the component supply device for an electric resistance welder of the present invention will be described.

  The component handled in the first embodiment is an iron projection nut 1 as shown in FIG. Hereinafter, it may be simply described as a nut. The nut 1 includes a square main body 2, a screw hole 3 provided at the center of the main body, and a welding protrusion 4 provided at one of the four corners of the main body 2.

  1 to 4 show a first embodiment.

In the electric resistance welding machine, a commonly used fixed electrode and movable electrode are paired, or two movable electrodes are paired. In the first embodiment, as shown in FIGS. 3 and 4, only the fixed electrode 5 is shown, and the movable electrode arranged coaxially with the axis OO is not shown. A guide pin 6 is provided coaxially with the fixed electrode 5, and the guide pin 6 protrudes through the steel plate part 7 placed on the fixed electrode 5.

  The screw hole 3 of the nut 1 that has been supplied is fitted into the guide pin 6. Therefore, this guide pin 6 becomes the target location of nut supply.

  The overall configuration of the component supply apparatus will be described.

  The base member 8 is made of a thick plate material, on which a guide cylinder 9 is fixed, and a component supply member 10 that is slidable in the guide cylinder 9 is provided. This component supply member 10 is made of a long and thick plate material, and is attached to an advancing / retreating drive means for performing the advancing / retreating operation. This advance / retreat driving means can be realized by various methods such as an advance / retreat output type electric motor or an air cylinder. Here, an air cylinder 11 is employed. The air cylinder 11 is fixed to the base member 8, and the piston rod 16 is coupled to the component supply member 10. The advancing / retreating direction of the component supply member 10 is substantially horizontal.

  As will be described later, in a state where the axis of the nut 1 (the axis of the screw hole 3) on which the component supply member 10 is advanced and held and the axis OO of the fixed electrode 5 are coaxial, the component supply member 10 Is moved in the direction of the axis OO of the fixed electrode 5. In order to perform such movement, lifting means is attached to the stationary member 12, and the base member 8 is coupled to the upper part thereof. The raising / lowering means can be realized by various methods such as an advancing / retracting output type electric motor or an air cylinder. Here, an air cylinder 13 is employed. The air cylinder 13 is arranged so that the piston rod 14 of the air cylinder 13 advances and retreats in the same direction as the axis OO, and the upper end of the piston rod 14 is coupled to the lower side of the base member 8. The forward / backward output direction of the air cylinder 13 and the forward / backward direction of the component supply member 10 are orthogonal to each other.

  With the configuration described above, the component supply member 10 advances to a predetermined position by the output of the air cylinder 11, and then the component supply member 10 descends in a right angle direction by the output of the air cylinder 13, and then the component supply member by the output of the air cylinder 11. 10 returns to the original position, and then the component supply member 10 returns to the raised position again by the output of the air cylinder 13. That is, the square motion is performed, and the movement locus is indicated by reference numeral 15 in FIG. 1 and FIG.

  The holding unit will be described.

  The projection nut 1 is held by a holding portion 18 formed on the lower surface of the component supply member 10. The holding portion 18 functions to hold the nut 1 fed from the supply passage means and reach the target location. For example, a pin protruding from the lower surface of the component supply member 10 is a screw of the nut 1. The structure may be such that the permanent magnets that enter the hole 3 and are embedded in the component supply member 10 prevent falling. Or the structure which accommodates the nut 1 in the recessed part formed in the lower surface of the components supply member 10 may be sufficient. Here, the latter example is adopted. Here, two nuts 1 are held, and the two nuts 1 are in a positional relationship that is shifted back and forth when viewed in the advancing direction of the component supply member 10. That is, as shown in FIG. 3 (A), the two nuts 1 are welded to the steel plate part 7 at a position that is obliquely displaced, and accordingly, the fixed electrode 5 on which the steel plate part 7 is placed. Is arranged at a position shifted diagonally. FIG. 3A shows the positional relationship between the component supply member 10 in the advanced state and the position where the nut 1 is welded, that is, the position of the fixed electrode 5.

  Therefore, the arrangement | positioning location of the holding | maintenance part 18 in the component supply member 10 is made to respond | correspond to the several welding location of the steel plate component 7 in the state which the component supply member 10 advanced to the predetermined position. Note that the number of holding portions 18 may be increased so that three or more parts can be held.

  The recessed type holding portion 18 will be described. The protruding portion 20 is provided at the end portion 19 of the component supply member 10, and the end portion of the component supply member 10 has a step shape. One holding portion 18 is formed on the protruding portion 20, and another holding portion 18 is formed on the rear end portion. Due to the arrangement of the holding portions 18 as described above, the two holding portions 18 are obliquely displaced as described above. Since both holding portions 18 have the same structure, only one side will be described.

  2B is a cross-sectional view taken along the line BB in FIG. 2A, and this cross-sectional portion corresponds to the holding portion 18 on the right side of FIG. A recess 21 is provided on the lower surface of the component supply member 10. The recess 21 has a square shape that can accommodate the main body 2 of the nut 1. One end of the recess 21 is an open portion 22 as shown in FIGS. 1 and 2A. The nut 1 is relatively extracted from here. A permanent magnet 23 serving as a suction means is embedded in the inner surface of the recess 21 opposite to the opening 22.

  This permanent magnet 23 is a suction means for attracting the nut 1 to the holding portion 18. As a method other than the magnet, for example, the permanent magnet 23 can be attracted and held by air suction.

  The supply passage means will be described.

  The above-described supply passage means is indicated by reference numeral 24 and serves to make the nut 1 reach the holding portion 18, and is constituted by a tube member 25 having a rectangular cross section that matches the nut shape. The pipe members 25 extend from the parts feeders 26 and 27, respectively, and are attached to the stationary member 12. The stationary member 12 means a member such as a base portion of the supply device, a machine frame, or a bracket extending therefrom.

  As shown in FIG. 2B, a plate-like stopper member 28 is formed at the end of the tube member 25, and the position of the tube member 25 is such that the nut 1 received here is positioned directly below the recess 21. Is set. An opening 33 is provided immediately above the stop position of the nut 1. When the nut 1 is received by the stopper member 28, the nut 1 is subsequently attracted toward the concave portion 21 by the attractive force of the permanent magnet 23 and is accommodated in the concave portion 21 through the opening 33.

  As shown in FIG. 2C, a lift device 29 can be employed to assist the attractive force of the permanent magnet 23 or to replace it with the permanent magnet 23. That is, the air cylinder 30 is fixed to the lower side of the pipe member 25, and the lift member 32 is disposed on the piston rod 31 so as to enter the pipe member 25. The nut 1 is lifted by the lift member 32 and reaches the recess 21 through the opening 33.

  Although the above-described tube member 25 is fixed to the stationary member 12, as shown in FIG. 2D, the tube member 25 that is a supply passage means may be attached to the component supply member 10. Here, a short joint pipe 35 having a rectangular cross section is welded to the side surface of the component supply member 10 to communicate with the recess 21, and a flexible urethane resin supply hose 36 joined to the joint pipe 35 is a part. It is connected to feeders 26 and 27. In this case, since the nut 1 enters from the side of the recess 21, the permanent magnet 23 is arranged on the back side of the joint pipe 35.

  The conforming shape of the component supply member for the steel plate component will be described.

  The component supply member 10 has a shape that can be adapted to the shape of the steel plate component 7 such as bending and bending. As shown in FIG. 4A, the steel plate part 7 has a step shape such as an upper step portion 37 and a lower step portion 38 by bending. For this purpose, a downward projecting portion 39 is formed on the component supply member 10, and the concave portion holding portion 18 as described above is formed therein. The left and right fixed electrodes 5 are set to have heights adapted to the upper step portion 37 and the lower step portion 38, respectively.

  As shown in FIG. 4B, the guide pin 6 may be elongated instead of the downward projecting portion 39 as described above to correspond to the step shape of the steel plate part 7.

  FIG. 4C shows a case where the curved portion 40 is formed on the steel plate component 7, and the curved portion 41 is also formed on the component supply member 10 side so as to match this curvature. By doing so, the downward projecting portion 39 described above is formed.

  The operational effects of the first embodiment are as follows.

  The plurality of nuts 1 held by the holding unit 18 exactly matches the welding location of the steel plate part 7 when the part supply member 10 advances to a predetermined position. In this state, the nut 1 is supplied to the guide pin 6, the nut 1 and the steel plate part 7 are pressurized between both electrodes, and a welding current is applied to complete the welding.

  Accordingly, since the plurality of nuts 1 are supplied to the plurality of predetermined guide pins 6 at a time, the nut supply to the electric resistance welding machine is efficiently performed, the time of the welding process is shortened, and the production is performed. It is effective for improving the performance. Furthermore, since the component holding position of the component supply member 10 corresponds to the welding location of the steel plate component 7, the nut 1 is accurately supplied to the guide pin 6 which is the target location, and the operation accuracy as the component supply device is improved. improves.

  The component supply member 10 has a shape that can be adapted to the shape of the steel plate component 7 such as bending and bending.

  As described above, since the component supply member 10 has a shape that can be adapted to the shape of the steel plate component 7 such as bending or bending, the steel plate component 7 is bent by press molding or is subjected to drawing. A plurality of nuts 1 can be supplied and welded in a state of being precisely matched. That is, accurate nut supply and welding for the steel plate part 7 having a complicated shape are realized under accurate positioning.

  An air cylinder 13 (elevating means) that moves the nut 1 held by the component supply member 10 in the direction of the axis OO of the fixed electrode 5 that is the electric resistance welding electrode is provided via the base member 8 to the air cylinder 11. Installed on.

  When the air cylinder 13 operates, the nut 1 held by the component supply member 10 also moves in the direction of the electrode axis OO. The electrode is usually provided with a guide pin 6 coaxial with the electrode axis. Therefore, a component having a shape such as the projection nut 1 is held in a state where the guide pin 6 penetrates the screw hole 3 of the nut 1 by the output movement of the air cylinder 13. In this way, the nut 1 is accurately and efficiently supplied to the guide pin 6 of the fixed electrode 5 by the operation of the air cylinder 13.

  A permanent magnet 23 that holds the nut 1 is provided in the holding portion 18.

  Thus, since the nut 1 is firmly adsorbed to the holding portion 18, even if vibration or any external force acts on the nut 1 when the component supply member 10 advances, the nut 1 can be easily held. Therefore, a highly reliable component supply operation can be obtained.

  A tube member 25 that supplies the nut 1 to the holding portion 18 is attached to the stationary member 12.

  Since each pipe member 25 connected to the plurality of holding portions 18 is attached to the stationary member 12, the nut 1 of a predetermined type and size is appropriately supplied to each holding portion 18, and the supply accuracy of the nut 1 is improved. Always maintained.

  A pipe member 25 that supplies the nut 1 to the holding portion 18 is attached to the component supply member 10.

  Since the tube member 25 moves forward and backward together with the component supply member 10, the nut 1 can guide the next nut 1 from the tube member 25 to the holding portion 18 immediately after being supplied to the guide pin 6. Therefore, the next nut 1 can be introduced by using the time during which the component supply member 10 is retracted, and the time for reducing the time is synchronized with the introduction of the nut into the holding portion 18 and the retract of the component supply member 10. Can be achieved.

  The component is the projection nut 1 supplied to the guide pin 6 of the fixed electrode 5.

  The guide pin 6 enters the screw hole 3 of the projection nut 1 relatively. Therefore, the support state of the nut 1 at the target location becomes stable.

  FIG. 5 shows a second embodiment.

  In this embodiment, an upper electrode 43 and a lower electrode 44 to which the nut 1 is supplied operate on a steel plate part 7 fixed to a jig (not shown). The upper electrode 43 is provided with an upper guide pin 45 that penetrates through the lower hole of the steel plate part 7, and a guide hole 46 is formed at the center thereof. On the other hand, the lower electrode 44 is provided with a lower guide pin 47 that can support the nut 1 and can enter the guide hole 46. Since the other configuration is the same as that of the previous embodiment, the illustration is omitted. The same reference numerals are used for members having similar functions.

  In FIG. 5A, the upper guide pin 45 of the upper electrode 43 descending into the pilot hole of the steel plate component 7 has entered, and the nut 1 supplied to the lower guide pin 47 by the component supply member 10 described above. Shows a state where is held. Here, as shown in FIG. 5B, when the lower electrode 44 is raised, the lower guide pin 47 enters the guide hole 46 and the nut 1 and the upper guide pin 45 are aligned. Then, as shown in FIG. 3C, when the lower electrode 44 is raised, the upper guide pin 45 is pushed in by the nut 1, and the nut 1 and the steel plate part 7 are sandwiched between both electrodes 43 and 44. In this state, a welding current is applied to complete welding.

  With such a configuration, the nut 1 is accurately positioned with respect to the pilot hole of the steel plate part 7 and high-precision welding is realized. Other functions and effects are the same as in the previous embodiment.

  FIG. 7 shows a third embodiment.

  The component handled in the third embodiment is an iron projection bolt 50 shown in FIG. 6B. Hereinafter, it may be simply expressed as a bolt. The bolt 50 includes a shaft portion 51 in which a male screw is cut, a flange portion 52 having a circular shape concentric with the shaft portion 51, and a circular welding protrusion 53 provided at the center of the flange portion 52. . Note that a projection bolt 50 of a type in which a plurality of welding protrusions 53 are arranged on one circumference may be used.

  The end portion 19 of the component supply member 10 is provided with a concave portion 54 whose front end is open, and an arc portion 55 that matches the outer periphery of the flange portion 52 is provided at the back thereof, and the holding portion 59 is formed by such a concave portion shape. ing. A groove 56 that accommodates the welding projection 53 is formed at the center of the recess 54 so as to open to the end 19, and a permanent magnet 57 is embedded on the upper surface side of the component supply member 10.

  When the component supply member 10 is in the most retracted position, the component supply pipe 58 is disposed so as to be aligned with the lower side of the recess 54. The component supply pipe 58 extends from a parts feeder (not shown) and is fixed to the stationary member 12. A receiving hole 61 coaxial with the electrode axis OO is provided at the center of the movable electrode 60 that advances and retreats in the vertical direction. A permanent magnet 62 for attracting and holding the bolt 50 is fixed to the inner part. The steel plate part 7 is supported by a jig (not shown) or the like, and a fixed electrode 63 is disposed on the upper side thereof. Since other configurations are the same as those of the previous embodiments, members having the same function are denoted by the same reference numerals.

  The projection bolt 50 transferred from the component supply pipe 58 to the holding portion 59 is attracted by the permanent magnet 57 as attraction means and is held there. In this state, the component supply member 10 advances to the position shown by the two-dot chain line and stops at a position where the shaft portion 51 is coaxial with the receiving hole 61. Then, the component supply member 10 descends and the shaft portion 51 enters the receiving hole 61. Thereafter, when the component supply member 10 moves backward, only the bolt 50 remains in the receiving hole 61 and the component supply member 10 returns to the original position. Here too, a square motion as indicated by reference numeral 15 is executed.

  The operational effects of the third embodiment are basically the same as those of the previous embodiments. The only difference is that the component is not the projection nut 1 but the projection bolt 50, and the support state of the bolt 50 itself is stable.

  FIG. 8 shows a fourth embodiment.

  In this embodiment, a plurality of nuts 1 are continuously welded to a pressed part delivered from a pressing device 65. A long material plate 66 wound in a roll shape is sequentially processed by a press device 65, and a drilling step 68 for opening a lower hole 67 through which the guide pin 6 of the fixed electrode 5 passes, A step 69 of bending a part in an upright state and a step 70 of bending the flange in the upright portion in the bending step are arranged at a predetermined processing pitch. The cross-sectional shape of the part thus pressed is shown in FIG. 8B, which is a BB cross-section of FIG.

  A plurality of nuts 1 are welded to the steel plate part 7 fed from the pressing device 65 so as to match the processing pitch. For this purpose, a guide pin penetration process 71 in which the electrode guide pins 6 penetrate the steel plate part 7, an adjacent nut supply process 72, and an adjacent pressurization energization process 73 are arranged. The single steel plate part 7 is used. Reference numeral 64 denotes a movable electrode.

  Steps 71, 72 and 73 as described above are continued endlessly. For this purpose, a mechanism using square motion or a mechanism using an endless chain can be employed. Here, the latter method is adopted.

  That is, a large number of conveying plates 76 driven by the endless chain 75 are continuously connected via the connecting shaft 77, and the fixed electrodes 5 and the guide pins 6 are arranged on these conveying plates 76. Here, since the two nuts 1 are welded, the two fixed electrodes 5 are attached to the conveying plate 76. A connecting member 78 fixed to the conveying plate 76 is engaged with the endless chain 75.

  Further, it is necessary that the guide pin 6 does not protrude before the guide pin 6 penetrates the steel plate part 7. For this purpose, as shown in FIG. 8C, the forward / backward drive unit 79 prevents the fixed electrode 5 from protruding. The advancing / retreating drive unit 79 can employ various types such as an air cylinder type and an electromagnetic drive type. Here, it is the latter type. An electromagnetic solenoid 80 is attached to the lower surface of the conveying plate 76, and a guide pin 6 is coupled to a member 81 that moves forward and backward by the solenoid 80.

  Therefore, when the steel plate part 7 is placed on the fixed electrode 5, the guide pin 6 is retracted, and when the lower hole 67 is coaxial with the guide pin 6, the guide pin 6 advances and protrudes from the steel plate part 7. . When the steel plate component 7 is fed by 1 pitch, the nut 1 is supplied by the component supply member 10 to the protruding guide pin 6 this time. Then, when the steel plate part 7 is further fed by 1 pitch, the movable electrode 64 descends and pressurization and energization are performed. Since other configurations are the same as those of the previous embodiments, members having the same function are denoted by the same reference numerals.

  With such a configuration, it is possible to weld a plurality of nuts 1 to a pressed part, that is, a steel plate part 7 in conjunction with a continuous processing type pressing device, and systematically combine pressing and welding of a plurality of parts for production. The improvement of sex is greatly promoted. Other functions and effects are the same as those of the previous embodiments.

  Although various air cylinders are employed in the above-described embodiments, an electric motor that performs forward / backward output may be employed instead. Further, in order to perform the operation as described above, although not shown, it is easily performed using a control device such as a normal sequencer, a sensor, an air switching valve operated by the control device, or the like. Can do.

  As described above, according to the present invention, a plurality of parts can be accurately and efficiently supplied to the guide pins and the receiving holes of the electrodes, so that the vehicle body welding process for automobiles, the sheet metal welding process for household appliances, and the like are wide. Can be used in industrial fields.

It is a side view which shows the whole apparatus. It is a top view of a component supply member, and sectional drawing of each part. It is the top view and vertical side view of a component supply member. It is sectional drawing of the front-end | tip part of a component supply member. It is sectional drawing which shows the example of a combination of another electrode. It is a perspective view of components. It is a figure of each part which shows the example of a projection bolt. It is a side view which shows the combination with a press apparatus.

Explanation of symbols

DESCRIPTION OF SYMBOLS 1 Projection nut 5 Fixed electrode 6 Guide pin 7 Steel plate part 10 Component supply member 11 Air cylinder OO Electrode axis 13 Air cylinder 18 Holding part 21 Recess 23 Permanent magnet 24 Supply passage means 25 Tube member 40 Curved part 50 Projection bolt 59 Holding Part 60 movable electrode 61 receiving hole 63 fixed electrode

Claims (1)

Supplying a part to a guide pin or receiving hole of an electric resistance welding electrode, which is a target location, and welding it to a steel plate component, a component supply member for supplying the component to the target location is attached to an advancing / retreating drive means, and the component supply A plurality of holding portions are provided on the member so as to hold a plurality of components, and the arrangement location of the holding portion in the component supply member is a plurality of steel plate components in a state where the component supply member has advanced to a predetermined position. It corresponds to the welding point of
The advancing direction of the component supply member is a direction toward the guide pin or the receiving hole of the electric resistance welding electrode, and the component supply member is made of a long and thick plate material, and a protruding portion (20) is formed at the end thereof. By providing, the end portion has a step shape shifted forward and backward as viewed in the advance direction of the component supply member, and by this step shape, the plurality of holding portions advance in the advance direction of the component supply member in the same manner as the step shape. When the component supply member is made of a long and thick plate material, the component supply member can be adapted to the curved and bent shape of the steel plate component. A component supply device for an electric resistance welding machine, wherein a downward projecting portion (39) is formed.

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