JP4609673B2 - Projection bolt supply device to rotary electrode - Google Patents

Description

  The present invention relates to supplying projection bolts to a rotary electrode.

Japanese Patent No. 2509103 discloses that a shaft portion of a projection bolt is inserted into an electrode receiving hole.
Japanese Patent No. 2509103

  In the prior art as described above, the matter relating to the combination with the rotary electrode is not disclosed. In particular, nothing is disclosed about the problem of how to realize a composite structure of a rotary electrode and a projection bolt supply device in a small space. When a rotary electrode is equipped with a plurality of electrodes, it is important in terms of productivity improvement that the projection bolt supply to the electrode and the welding to the other steel plate part can be performed synchronously. . In order to satisfy such a point, it is necessary to adopt a structure in which the function of the projection bolt supply device and the operation of the rotary electrode are organically related.

  The present invention has been provided to solve the above-described problems, and a projection bolt can be supplied to a rotary electrode having a plurality of electrodes by a compact device structure, and is highly reliable. An object of the present invention is to provide a projection bolt supply device to a rotary electrode that can be operated.

Means to solve the problem

According to the first aspect of the present invention, a plurality of electrodes are arranged so that the electrode axis is in the diameter direction of the rotation circle of the rotating member, and a receiving hole into which a shaft portion of a projection bolt is inserted is provided in these electrodes. The stop position of the member is a standby position where the shaft portion is inserted from the component supply device into the receiving hole and a welding position where the rotation member rotates and the projection bolt is welded to the other steel plate component, the component supply device is Insertion drive means that advances and retreats in the same direction as the axis of the electrode stopped at the standby position, a base member coupled to the insertion drive means, and an electrode axis that is supported by the base member and is substantially parallel to the electrode axis of the electrode at the standby position Do a transition rotating means for rotating about a positional relationship between the rotational axis, includes a component holding member that matches the electrodes in the standby position attached to the shift revolution means, the The rotation axis of the row rotation means is arranged at a right angle with respect to the rotation axis of the rotation member, and at least two of the component holding members attached to the rotation member of the transition rotation means have one component holding The stop position of the member is the receiving position for the projection bolt transferred through the supply pipe, and the stop position of the other component holding member is the supply position for supplying the projection bolt to the electrode in the standby position, and is fixed to the base member. A stopper unit for stopping the projection bolt and then reaching the component holding member is coupled to the standing support plate, and the component holding member receiving hole when one of the component holding members is located at the receiving position. Is configured to match the delivery pipe of the stopper unit from below, and the base member is connected to the insertion drive means. A first horizontal plate combined in a horizontal posture, a vertical plate connected to the first horizontal plate in a substantially vertical posture, and a horizontal plate connected to the vertical plate A projection bolt supply device for a rotary electrode, characterized in that it is constituted by a second horizontal plate in an attitude, and a rotation driving means for rotating the transition rotation means is fixed to the second horizontal plate .

  In the following description, the projection bolt may be simply expressed as a bolt.

The invention's effect

  The projection bolt held by the component holding member is moved to a position where it is coaxial with the electrode waiting by the transfer rotating means, and subsequently, the shaft portion of the bolt is moved into the electrode receiving hole by the operation of the insertion driving means. Inserted into. Thereafter, the rotating member rotates and the electrode holding the bolt is stopped at a position corresponding to the steel plate part, the bolt is pressurized to the steel plate part, a welding current is applied, and electric resistance welding is completed.

  Then, since the transition rotating means for moving the component holding member is supported by the base member, and this base member is coupled to the insertion driving means, the bolt held by the component holding member is rotated and inserted by the transition rotating means. This is a combined operation of advancing and retreating operation by the driving means. Therefore, the movement trajectory of the bolt is simplified, and the bolt shaft portion can be inserted into the electrode receiving hole with high accuracy.

  Furthermore, the rotational movement by the transition rotating means is ensured, whereby the part where the component holding member receives the bolt and the part where the bolt is inserted into the electrode can be separated. Therefore, it is possible to avoid the rotating electrode from interfering with the structure such as the supply pipe into which the bolt is introduced during the rotation, and so as not to interfere with the electrode at the standby position. The structure can be summarized and the apparatus can be made compact.

  Moreover, at the same time as inserting a bolt into one electrode, the bolt can be welded to a steel plate part at another electrode. Therefore, bolt insertion and welding can be executed in a short time in a synchronized manner, which is effective for improving productivity.

The axis of rotation of the pre-Symbol migration rotating means, that are staggered at right angles to the rotary member of the rotation axis.

  In this way, since the two rotation axes are perpendicular to each other, the component holding member can be opposed to the electrode in the standby position in a coaxial state, and the bolt is reliably inserted into the electrode.

At least two component holding member attached to the rotating member of the previous SL migration rotating means is a receiving position of the projection bolt stop position of one component holding member has been transported to the supply pipe, the other component holding member stop position that is a supply position for supplying to the electrodes in a projection bolt to the standby position.

  The stop position of the one component holding member is the bolt receiving position, and the stop position of the other component holding member is the bolt supply position. Therefore, the rotation position of the rotating member causes the bolt receiving position and supply. The position can be separated, and it can be avoided that the rotating electrode interferes with the structure such as the supply pipe that introduces the bolt during rotation, and also interferes with the electrode in the standby position. Therefore, the device structure can be integrated so that the device can be made compact.

  Further, since the bolt receiving position and the supply position are set apart from each other by the rotational movement, the transition rotating means is compactly formed by shortening the distance between the at least two component holding members attached to the rotating member. This is effective for making the entire apparatus compact. In other words, even when the component holding member is at the position farthest from the standby electrode, it is possible to improve the unity of the device and avoid interference with nearby related members so that it does not protrude from the device. .

Before Kimoto member, a bearing portion for supporting the rotation shaft of the shift revolution means, rotation drive means for rotating the rotary shaft that is attached.

  As described above, since the bearing portion and the rotation driving means are attached to the base member, the base member can be a basic member and can be structurally well organized.

Stopper unit to reach the component holding member from the temporarily stopped the flop Roger action bolt that provided.

  Normally, the projection bolt is moved through the supply hose at high speed by jetting compressed air, so if it collides with the receiving hole of the component holding member at the same speed, the shape inside the receiving hole may be damaged or abnormally worn. Will be. However, since the stopper unit as described above is arranged and the bolt is temporarily stopped, the shocking bolt behavior can be eliminated, and the durability of each part of the receiving hole can be improved. Further, due to the above-described compactness, the space required for the arrangement of the stopper unit can be accommodated so as not to protrude significantly from the rotation radius of the transition rotation means.

  Next, the best mode for carrying out the projection bolt supply device to the rotary electrode of the present invention will be described.

  1 to 8 show a first embodiment.

  The projection bolt in the first embodiment will be described.

  Although the projection bolt 1 is made of iron and has various shapes, the bolt shape of the first embodiment will be described with reference to FIG. A circular flange portion 3 is integrally provided on the shaft portion 2 on which the male screw is formed, and a welding projection 4 is formed concentrically on the flange surface opposite to the shaft portion 2. As for the dimensions of each part, the diameter of the shaft part 2 is 5 mm, the length of the shaft part 2 is 23 mm, the diameter of the flange part 3 is 13 mm, the thickness of the flange part 3 is 1 mm, the diameter of the welding protrusion 4 is 9 mm, and welding The protrusion 4 has a protrusion thickness of 1.2 mm.

  The entire projection bolt supply device will be described.

  FIG. 1 is a front view showing the entire welding apparatus. A column 6 fixed to the floor 5 is vertically erected, and a flat base 7 is fixed in a horizontal posture thereon. A rotary electrode unit 8 that receives the bolt 1 and welds it to a steel plate part is installed on the base 7. A component supply device 9 that receives the bolt 1 from a component supply source such as a parts feeder and supplies the bolt 1 to the rotary electrode unit 8 is installed above the floor 5.

  Next, the rotary electrode unit will be described.

  A flat frame 12 is fixed to a leg member 11 erected on the base 7 in a horizontal posture, and a pair of bearings 13 are fixed thereon, and the rotating shaft 14 is supported by the bearings 13. ing. The axis 15 of the rotating shaft 14 is installed in the horizontal direction. A rotating member 16 having a square shape is fixed to the rotating shaft 14, and two electrodes 17 and 18 are coupled to the rotating member 16. The electrodes 17 and 18 are coaxially arranged on an electrode axis OO perpendicular to the axis 15. That is, the electrode axis OO is set in the same direction as the diameter direction of the rotating circle 19 (see FIG. 1) of the rotating member 16.

  A plurality of electrodes are arranged on the rotating member 16, and here, two electrodes 17 and 18 are arranged in a straight line. As shown in FIG. 6A, a receiving hole 20 is formed in the electrodes 17 and 18 coaxially with the electrode axis OO, and a permanent magnet 21 for preventing the bolt 1 from dropping is attached to the back thereof. It has been. The standby position is a state in which the electrode 17 faces downward and the shaft portion 2 of the bolt 1 is inserted into the receiving hole 20. In addition, as shown in FIG. 8, the welding position is a state in which the electrode 18 faces right above and the welding projection 4 is welded to the steel plate part 22. The counterpart electrode is a movable electrode and is indicated by reference numeral 23.

  In the first embodiment, the electrodes 17 and 18 are arranged at intervals of 180 degrees, but three electrodes can be arranged at intervals of 120 degrees, or four electrodes can be arranged at intervals of 90 degrees. .

  The electrodes 17 and 18 rotate forward 180 degrees and reverse 180 degrees. For that purpose, various methods such as an electric step motor and a rack and pinion mechanism can be adopted for the rotational drive. Here, the latter rack and pinion system is used. A pinion 25 is fixed to the rotating shaft 14, and a rack 26 is engaged with the pinion 25. An air cylinder 27 for advancing and retracting the rack 26 is provided. The air cylinder 27 is attached to a support member 28 fixed to the base 7.

  A stopper arm 29 in the horizontal direction is coupled to the rotary member 16, and the stopper arm 29 hits the stopper 30, whereby the stop positions of the electrodes 17 and 18 are set. The stopper 30 is fixed to a support plate 31 fixed to the gantry 12, and a damper 32 is fixed next to it. The stopper 30 and the damper 32 are also attached to the support plate 31 on the opposite side so that the stopper arm 29 also functions at a position rotated 180 degrees from the position of FIG.

  As the air cylinder 27 moves back and forth, the rack 26 advances and retreats, whereby the pinion 25 rotates to rotate the rotating member 16 by 180 degrees, and the stopper arm 29 is received by the stopper 30 on the opposite side.

  In order to supply a welding current to the electrodes 17 and 18, an energizing contactor unit 33 is provided. This has a normal structure, and is composed of an air cylinder, a conducting wire, a contact chip, and the like.

  Next, the component supply device will be described.

  The component supply device 9 includes insertion drive means that moves forward and backward in the same direction as the electrode axis OO of the electrode 17 that is stopped at the standby position, that is, an air cylinder 34, and a base member 35 that is coupled to the air cylinder 34. , A transition rotating means 43 that rotates around a rotation axis 50 supported by the base member 35 and arranged substantially parallel to the electrode axis OO, and an electrode that is in a standby position after being shifted by the transition rotating means 43 17 includes a component holding member 37 that conforms to FIG. The rotation axis 50 is arranged so as to be perpendicular to the rotation axis 15 of the rotation member 16.

  As shown in FIGS. 1, 4, and 5, a support member 41 erected from the floor 5 is coupled to the side surface of the air cylinder 34. As shown in FIG. 4, the piston rod 38 of the air cylinder 34 advances and retreats in the vertical direction, and a base member 35 is fixed to the upper end of the piston rod 38. In order to smoothly move the base member 35 up and down, a guide rod 40 that slidably penetrates the cylinder block 39 of the air cylinder 34 is provided, and the upper end of the guide rod 40 is fixed to the base member 35.

  With the structure as described above, the cylinder block 39 is integrated with the stationary member, and the transition rotating means 43 is supported by the base member 35 coupled to the piston rod 38.

  The transition rotation means 43 operates around the rotation axis 50 and is operated by the electric motor 36 which is a rotation drive means. A rotating member 44 formed of an elongated member is coupled to the upper end of the rotating shaft 45 of the electric motor 36, and holding heads 49 as component holding members are attached to both ends of the rotating member 44. Both holding heads 49 are arranged at a position equidistant from the rotation axis 50. Although the number of holding heads 49 is at least two, it is possible to use four holding heads. Instead of the electric motor 36, it is also possible to employ an air operation cylinder that performs rotation output.

The base member 35 has a first horizontal plate 46 connected to the piston rod 38 and the guide rod 40 in a horizontal posture, and a substantially vertical posture connected to the first horizontal plate 46. It is constituted by a vertical plate 47 and a second horizontal plate 48 that is coupled to the vertical plate 47 and has a horizontal posture.

The electric motor 36 is fixed to the second horizontal plate 48, and the rotating shaft 45 is supported by the bearing portion 51. The bearing portion 51 is fixed to a bracket member 64 coupled to the vertical plate 47. In FIG. 4, the bracket member 64 is indicated by a two-dot chain line. FIG. 5 is a view taken in the direction of the arrow (5) in FIG. And in FIG. 5, illustration of the bearing part 51 is abbreviate | omitted.

  With the above-described configuration, the base member 35 is moved up and down and the component holding member 37 is moved and rotated independently of the rotary electrode unit 8.

  As shown in FIG. 1, the bolt 1 is supplied from a parts feeder 53 through a supply hose 54 made of synthetic resin, and a supply pipe 55 made of stainless steel is connected thereto. As shown in FIGS. 1 and 4, when one holding head 49 matches the supply pipe 55, the other holding head 49 matches the electrode 17. The matching position where the holding head 49 and the supply pipe 55 are in a coaxial state is the receiving position of the bolt 1.

  As shown in FIGS. 1 and 4, the installation positions of the electrodes 17 and 18 (electrode axis OO) are selected so that the holding head 49 holding the bolt 1 matches the receiving hole 20 of the electrode 17. Yes. The matching position where the holding head 49 and the electrodes 17 and 18 are in a coaxial state is the supply position of the bolt 1.

  As described above, since the receiving position and the supply position are set, the supply pipe 55 and the standby electrode 17 can be disposed within the rotation range of the rotating member 44, which is effective for making the apparatus compact. is there.

  As shown in FIG. 6A, the holding head 49 is obtained by processing a block material made of stainless steel which is a nonmagnetic material, and the flange portion 3 is accommodated in a circular accommodation hole 56 opened upward. Is done. The holding head 49 is fixed to the rotating member 44 by welding or the like. An annular stepped portion 57 is formed in the accommodation hole 56, and the surface of the flange portion 3 is seated thereon. The attraction force of the permanent magnet 58 embedded in the holding head 49 acts on the flange portion 3 so that the seating is performed reliably.

  An air passage 59 that opens to the bottom of the accommodation hole 56 is provided, and the air passage 59 communicates with the air hose 60 through the inside of the rotating member 44. The air hose 60 is coupled to the rotating member 44 via a joint pipe, is formed in a coil shape so as to be able to expand and contract during the transition rotation of the component holding member 37, and is connected to an air switching valve (not shown).

  When the holding head 49 is rotated by the operation of the electric motor 36 and the shaft portion 2 is coaxial with the receiving hole 20 of the electrode 17, the rotation is stopped. Then, when the base member 35 is raised by the operation of the air cylinder 34, the tip end portion of the shaft portion 2 enters the receiving hole 20. At this stage, compressed air is injected from the air passage 59, the bolt 1 is sent out from the receiving hole 56, the shaft portion 2 enters the receiving hole 20, and the flange portion 3 is in close contact with the end surface of the electrode 17. Such an operation is formed by the reciprocation of the ascending / descending operation and the moving operation in the rotational direction, as indicated by the operation line indicated by reference numeral 61.

  Instead of the operation line 61 as described above, it is also possible to perform an operation such as a square motion. That is, when the shaft portion 2 is inserted all the way into the receiving hole 20, the electric motor 36 returns from the position as it is. Therefore, the operation line indicated by reference numeral 62 is performed. In this case, since the holding head 49 returns in the horizontal direction while the flange portion 3 remains in the receiving hole 56, the holding head 49 is provided with the notched portion 63 in an open state, and the bolt 1 is inserted into the receiving hole 20. The holding head 49 can be returned while remaining. Therefore, in such a case, the air passage 59 can be stopped.

  If the bolt 1 transferred at high speed from the parts feeder 53 directly collides with the holding head 49, the stepped portion 57 and the accommodation hole 56 in the holding head 49 may be damaged. In order to prevent such damage, a stopper unit 65 is provided in the middle of the supply pipe 55. As shown in FIGS. 1 and 4, the unit case 66 of the stopper unit 65 is coupled to a support plate 73 fixed to the base member 35.

  As shown in FIG. 7, the inlet 67 and the outlet 68 are provided in the unit case 66 so as to face each other, and the supply pipe 55 is welded so as to communicate with each other. A stopper piece 70 having a passage hole 69 is slid in the unit case 66. The stopper piece 70 is advanced and retracted by an air cylinder 71 attached to the unit case 66. A solid portion arranged next to the passage hole 69 is a stop portion 72.

  In the state shown in the figure, the stop portion 72 closes the entrance 67. The bolt 1 that has been transferred from the parts feeder 53 at high speed by pneumatic conveyance or the like has the welding projection 4 vigorously stopped. And temporarily stops as shown by the solid line. In this way, the bolt 1 is temporarily stopped, and the bolt 1 is prevented from hitting the stepped portion 57 of the holding head 49 to prevent the holding head 49 from being damaged. Next, when the stopper piece 70 is moved by the operation of the air cylinder 71 and the passage hole 69 matches the entrance 67 and the delivery port 68, the bolt 1 falls into the delivery pipe 55 coupled to the unit case 66. .

  When the rotating member 44 is stopped at a predetermined position, the accommodation hole 56 of the holding head 49 matches the passage of the delivery pipe 55, and the flange portion 3 of the bolt 1 smoothly falls into the accommodation hole 56. ing. That is, the two holding heads 49 are arranged at an interval of 180 degrees so that when one holding head 49 matches the electrode 17, the other holding head 49 matches the supply pipe 55. The state of matching is the above-described “reception position”.

  FIG. 3 shows that the air cylinder 75 is fixed to the stationary column 74 fixed to the base 7 so that the movable electrode 23 is advanced and retracted.

  In the first embodiment described above, the advancing / retreating direction of the air cylinder 34 is the vertical direction, and accordingly, the other axes are in the horizontal direction and the vertical direction. However, the forward / backward direction of the air cylinder 34 may be inclined by 45 degrees or 90 degrees, for example, with respect to the vertical direction, and the other axes may be inclined correspondingly.

  In the first embodiment described above, various air cylinders are employed. However, instead of this, an electric motor that performs forward / backward output may be employed. 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.

  The operational effects of the first embodiment described above are as follows.

  The bolt 1 held by the holding head 49 is shifted to a position where it is coaxial with the electrode 17 waiting by the electric motor 36 and stopped, and subsequently the shaft portion of the bolt 1 is operated by the operation of the air cylinder 34. 2 is inserted into the receiving hole 20 of the electrode 17. Thereafter, the rotating member 16 rotates and the electrode 17 holding the bolt 1 is stopped at a position corresponding to the steel plate part 22, and the bolt 1 is pressurized to the steel plate part 22 and a welding current is applied to complete the electric resistance welding. .

  The electric motor 36 for shifting and holding the holding head 49 is supported by the base member 35, and the base member 35 is coupled to the air cylinder 34, so that the bolt 1 held by the holding head 49 is generated by the electric motor 36. This is a combined operation of the transition rotation operation and the advance / retreat operation by the air cylinder 34. Therefore, the movement trajectory of the bolt 1 is simplified, and the bolt shaft portion 2 can be inserted into the receiving hole 20 of the electrode 17 with high accuracy.

  Furthermore, the reciprocating rotation operation by the electric motor 36 is ensured, and thereby, the location where the holding head 49 receives the bolt 1 and the location where the bolt 1 is inserted into the electrode 17 can be separated. Accordingly, it is possible to avoid the rotating electrodes 17 and 18 from interfering with the structure such as the supply pipe 55 into which the bolt 1 is introduced during rotation, and to interfere with the electrode 17 or 18 in the standby position. Therefore, the device structure can be integrated so that the device can be made compact.

  Further, at the same time when the bolt 1 is inserted into one electrode 17, the bolt 1 can be welded to the steel plate part 22 at the other electrode 18. Therefore, bolt insertion and welding can be executed in a short time in a synchronized manner, which is effective for improving productivity.

  The rotation axis 50 of the transition rotation means 43 is offset at right angles to the rotation axis 15 of the rotation member 16.

  Thus, since both the rotational axes 50 and 15 are perpendicular to each other, the holding head 49 can be opposed to the electrode 17 in the standby position in a coaxial state, and the bolt is surely inserted into the electrode 17. Executed.

  At least two holding heads 49 attached to the rotating member 44 of the transition rotating means 43 are arranged at intervals of 180 degrees, and the stopping position of one holding head 49 is the receiving position of the bolt 1 that has been transferred through the supply pipe 55. The stop position of the other holding head 49 is the supply position for supplying the bolt 1 to the electrode 17 at the standby position.

  Since the stop position of the one holding head 49 is the receiving position of the bolt 1 and the stop position of the other holding head 49 is the supply position of the bolt 1, the rotation of the rotating member 44 causes the rotation of the bolt 1. The receiving position and the supply position can be separated from each other, and it is possible to avoid the rotating electrodes 17 and 18 from interfering with the structure such as the supply pipe 55 into which the bolt 1 is introduced during the rotation. The apparatus structure can be integrated so as not to interfere with the electrode 17 in the standby position, and the apparatus can be made compact.

  Further, since the receiving position and the supply position of the bolt 1 are set apart from each other by the rotational movement, the transition rotating means 43 can be made compact by shortening the distance between the at least two holding heads 49 attached to the rotating member 44. This is effective for making the entire apparatus compact. In other words, even when the holding head 49 is at a position farthest from the electrode 17 in the standby state, it is possible to improve the unity of the apparatus and avoid interference with nearby related members so that the holding head 49 does not protrude from the apparatus. it can.

  A bearing portion 51 that supports the rotation shaft 45 of the transition rotation means 43 and a rotation drive means that rotates the rotation shaft 45, that is, an electric motor 36, are attached to the base member 35.

  As described above, since the bearing portion 51 and the electric motor 36 are attached to the base member 35, the base member 35 can be used as a basic member to be structurally well-organized.

  A stopper unit 65 that stops the bolt 1 and then reaches the holding head 49 is provided.

  Normally, the bolt 1 is transferred through the supply hose 54 at a high speed by jetting compressed air. If the bolt 1 collides with the accommodation hole 56 of the holding head 49 at the same speed, the shape inside the accommodation hole is damaged or abnormal wear occurs. Will do. However, since the stopper unit 65 as described above is arranged and the bolt 1 is temporarily stopped, the shocking behavior of the bolt 1 can be eliminated, and the durability of each part of the receiving hole can be improved. Moreover, the space required for the arrangement of the stopper unit 65 can be accommodated by the above-described compaction so as not to protrude significantly from the rotation radius of the transition rotation means 43.

  As described above, according to the present invention, a projection bolt can be supplied to a rotary electrode having a plurality of electrodes by a compact device structure, and a highly reliable operability can be obtained. It can be used in a wide range of industrial fields, such as car body welding processes and sheet metal welding processes for home appliances.

It is a front view of the whole apparatus. It is a top view of the whole apparatus. It is a side view of the whole apparatus. It is a front view of a component supply apparatus. FIG. 5 is a view taken in the direction (5) of FIG. It is sectional drawing of a holding | maintenance head part. It is sectional drawing of a stopper unit. It is sectional drawing which shows the state in which a volt | bolt is welded to steel plate components.

Explanation of symbols

DESCRIPTION OF SYMBOLS 1 Projection bolt 2 Shaft part 3 Flange part 7 Base 8 Rotating electrode unit 9 Parts supply apparatus 16 Rotating member 17 Electrode 18 Electrode 19 Rotating circle 20 Receiving hole 22 Steel plate part 23 Movable electrode 34 Air cylinder 35 Base member 36 Electric motor 37 Component holding member 44 Rotating member 45 Rotating shaft 49 Holding head 50 Rotating axis 51 Bearing portion 55 Supply pipe 56 Housing hole 65 Stopper unit

Claims (1)

A plurality of electrodes are arranged so that the electrode axis is in the diameter direction of the rotating circle of the rotating member, and receiving holes into which shaft portions of projection bolts are inserted are provided in these electrodes, and the stop position of the rotating member is the component supply device From the standby position where the shaft portion is inserted into the receiving hole and the welding position where the rotation member rotates and the projection bolt is welded to the mating steel plate part,
The component supply device includes: an insertion drive unit that moves forward and backward in the same direction as the axis of the electrode that is stopped at the standby position; a base member that is coupled to the insertion drive unit; and an electrode that is supported by the base member and is at the standby position A transition rotation means that rotates about a rotation axis that is in a positional relationship substantially parallel to the electrode axis line, and a component holding member that is attached to the transition rotation means and matches the electrode at the standby position ,
The rotation axis of the transition rotation means is arranged at a right angle with respect to the rotation axis of the rotation member,
At least two of the component holding members attached to the rotation member of the transition rotation means are set such that the stop position of one component holding member is a receiving position of the projection bolt that has been transferred through the supply pipe, and the other component holding member The stop position is the supply position for supplying the projection bolt to the electrode at the standby position,
A component when the projection bolt is stopped once and then a stopper unit that reaches the component holding member is coupled to the upright support plate fixed to the base member, and one component holding member is positioned at the receiving position The holding hole of the holding member is configured to match the delivery pipe of the stopper unit from below,
The base member includes a first horizontal plate coupled to the insertion driving means in a horizontal posture, a vertical plate coupled to the first horizontal plate and configured in a substantially vertical posture, and A rotary type characterized in that it is constituted by a second horizontal plate that is connected to the vertical plate in a horizontal posture, and a rotation driving means for rotating the transition rotating means is fixed to the second horizontal plate. Projection bolt supply device to electrodes.

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