JP2008229717A - Automatic supply apparatus of parts having hole - Google Patents

Abstract

<P>PROBLEM TO BE SOLVED: To supply and hold a nut without fail to one of electrode such as an upper electrode, while securing a working space between the upper electrode and a lower electrode of a welding device. <P>SOLUTION: When a first nut 200A in a chute 56 is positioned right beneath the axial center of the upper movable electrode 2A during an ascending period of the upper movable electrode 2A, a guide shaft 26 is lowered and an elastic tip portion 26b is inserted into a screw hole 200a of the first nut 200A. Then, during retreat of the chute 56, the first nut 200A held by the elastic tip portion 26b pushes and opens a stopper plate 63 against elastic urging force of an elastic member 61 and comes out of the chute 56 being elastically held by the elastic tip portion 26b. A work 100 is set movably in the horizontal direction at the lower fixed electrode 1A, and the nut 200, which is elastically held in the elastic tip portion 26 of the upper movable electrode 2A, is welded to the work 100. <P>COPYRIGHT: (C)2009,JPO&INPIT

Description

  The present invention relates to an apparatus for automatically supplying perforated parts, more specifically, a welding apparatus or the like for welding a nut having a hole (hereinafter also referred to as a perforated part) to a sheet metal part or the like (hereinafter also referred to as a work). Hereinafter, the present invention also relates to a perforated component automatic supply work device including a work device and a component automatic supply device that supplies a perforated component to the work device.

  In a welding device (working device) that welds a nut to a work, the work is set on a guide pin of a lower electrode (one working part of a pair of working parts), and a nut is placed on the upper surface of the work. The nut is welded to the workpiece by energizing the electrode while pressing the nut with the electrode (the other working portion of the pair of working portions).

  2. Description of the Related Art Conventionally, as a device for supplying a nut placed on the upper surface of a workpiece, a device for supplying a nut to the lower electrode side is known.

  However, when the nut is supplied to the lower electrode side, the upper electrode cannot be lowered and pressurized unless the nut transport mechanism is retracted from the axis of the upper and lower electrodes. This was a negative factor for the important issue of shortening the welding work time associated with automation. Further, when the nut is supplied to the lower electrode side, there is a problem that the nut cannot be supplied to the lower electrode side while the workpiece is replaced on the lower electrode side.

  Therefore, in order to shorten the welding work time, it is conceivable to supply a nut to the upper electrode side in parallel with the workpiece loading work, and a method of supplying the nut to the upper electrode side and holding the nut on the upper electrode As techniques to be performed, techniques described in Patent Document 1, Patent Document 2, Patent Document 3, Patent Document 4, Patent Document 5, Patent Document 6, and the like have been proposed.

  Here, Patent Documents 1 to 4 are techniques for a stationary welding apparatus, and Patent Documents 5 and 6 are techniques for a portable welding apparatus in which a welding gun or the like is mounted on a welding robot or the like. It is.

  In Patent Document 1, a nut is supplied to a position immediately below the upper electrode at the ascending position (retracted end), and the nut is attracted and held at this position by the magnetic force of the magnet. A technique for pulling and dropping onto a work on the lower electrode side is disclosed.

  In Patent Document 2, the nut supported by the nut seat is carried to just below the upper electrode, and then the nut is moved from the nut seat to the guide pin by the descending upper electrode, and at the same time the nut seat is moved downward. A technique for rotating and retracting from the upper electrode is disclosed.

  Further, in Patent Document 3, a nozzle is provided between the air passage in the guide pin of the upper electrode and the outer periphery of the pin, and an upward pneumatic flow is blown out from this nozzle to push up the nut. Techniques for pressing and holding are disclosed.

  In Patent Document 4, as in the technique described in Patent Document 1, a nozzle is provided between the air passage in the guide pin of the upper electrode and the outer periphery of the pin, and an upward pneumatic flow is blown from the nozzle to remove the nut. A technique for pushing up and holding a nut against the lower end surface of the upper electrode is disclosed.

  Patent Document 5 discloses a technique for supplying a nut to a lower electrode of a spot welding gun supported by a robot by advancing the spindle of a supply head obliquely from above the lower electrode.

Patent Document 6 discloses a technique in which a bolt supply device is attached to a welding frame moved by a robot, and a bolt is inserted into a bolt receiving hole formed in one of upper and lower electrodes installed in the welding frame. Yes.
Microfilm of actual application No. 59-52555 (No. 60-166478) Japanese Patent No. 2577177 Microfilm of actual application No. 55-179524 (No. 57-102490) Japanese Patent Laid-Open No. 10-43870 No. 3-47750 Japanese Patent Laid-Open No. 2001-314975

  However, according to the technique described in Patent Document 1, since the side surface of the perforated part is attracted and held by the magnetic force on the side surface of the magnet, the common name that the projection of the nut (welding protrusion) protrudes outward from the side surface of the nut. When using a nut whose side surface is not formed uniformly, such as an external projection nut, the nut is attracted and held on the side surface of the magnet in an inclined state. For this reason, when the upper electrode descends, the posture and direction of the nut become unstable, and a supply error is likely to occur. Moreover, since the position where a magnet is arrange | positioned is between upper and lower electrodes, the work space between upper and lower electrodes becomes narrow, and there also exists a problem that workability | operativity worsens.

  Further, according to the technique described in Patent Document 2, since the upper electrode does not have a function of locking and holding the nut, the lowering speed of the upper electrode is required to lock and hold the nut on the upper electrode and transfer it onto the workpiece. Must be set higher than the natural fall speed of the nut. Further, since the nut is not placed on the nut seat at the start, it is necessary to reciprocate the piston rod once in order to place the nut on the nut seat. Furthermore, in the upper slide, when the nut with the screw hole in a horizontal state is rotated so that the screw hole is in a vertical state and placed on the nut seat, and is transported to just below the upper electrode, the nut on the nut seat is in standby. Next, there is a problem that the nut that is placed on the nut seat is likely to interfere with the operation and the operation becomes unstable.

  In addition, according to the techniques described in Patent Document 3 and Patent Document 4, when the blowout of the pneumatic flow from the nozzle is stopped, the upper electrode cannot hold the nut. When the air source is shut off, the nut falls from the upper electrode, and it is necessary to reset the nut to the upper electrode when the operation is resumed. In addition, during work, waiting time such as workpiece replacement occurs, but during that time, air pressure flow must be continued without stopping, so that air consumption increases. Furthermore, there is a case where it is desired to make the direction of the nut substantially constant depending on the welding, but there is a problem that it is difficult to keep the direction of the nut constant because the nut is rotated and moved by the pneumatic flow.

  Further, according to the techniques described in Patent Document 5 and Patent Document 6, a device for supplying nuts or bolts is connected with a flexible feed pipe or the like in order to receive replenishment of nuts or bolts. Due to the presence of the supply pipe, there is a problem that the operating range and moving speed of the robot are limited, and it is difficult to fully exert the original functions of the robot.

  The present invention is not limited to a welding device having an upper electrode and a lower electrode, but a working device having a wide pair of working parts such as a caulking device, and a component automatic for supplying a part having a hole, that is, a perforated part to the working device. A perforated component automatic supply work device comprising a supply device, which solves the problems of the prior art as described above, and has a work space between a pair of working parts, for example, a work space between upper and lower electrodes. A main object is to provide a perforated component automatic supply working apparatus capable of reliably supplying and holding a component such as a nut to one working portion such as an upper electrode.

  The perforated component automatic supply working device of the present invention is provided for a working device having a movable side working portion and a fixed side working portion, and either the movable side working portion or the fixed side working portion. A perforated component automatic supply operation device comprising a component automatic supply device for supplying a hole component, wherein the component automatic supply device accommodates the perforated components in a line, and is capable of moving forward and backward, A stopper plate that opens and closes the tip opening of the chute, an elastic member that always applies a first urging force in a direction to close the chute tip opening to the stopper plate, and the perforated component supply And a guide shaft that is reciprocally movable, and when the chute is at the forward end, the elastic tip of the guide shaft is a hole in the leading perforated part in the chute When the chute retracts after being inserted, the leading perforated part held by the elastic tip portion overcomes the first urging force by the elastic member and pushes the stopper plate open to open the leading perforated part. The hole component is configured to protrude outward from the tip opening of the chute and be elastically held by the elastic tip. The working part to which the perforated component is supplied is, for example, an upper working part or a lower working part.

  According to the present invention, the perforated parts are accommodated in a row in the chute, the leading perforated parts are supplied to one working part, and the perforated parts are elastically held by the elastic tip of the guide shaft. Further, the present invention can be applied to a projection nut or the like. Moreover, it is possible to reliably supply and hold a perforated part to one work part, for example, the upper electrode while securing a work space between a pair of work parts, for example, upper and lower electrodes.

  The working part to which the perforated parts are supplied is, for example, an upper working part.

  The perforated part is a nut that can be welded to a workpiece, and the working device is a welding device that welds the nut to the workpiece, and the upper working portion is an upper movable electrode of the welding device, and the welding The apparatus welds a nut elastically held at the elastic tip of the upper movable electrode to the workpiece set so as to be movable in the horizontal direction on the lower fixed electrode side which is the fixed side working portion.

  The perforated part is a nut that can be welded to a workpiece, and the working device is a welding device that welds the nut to the workpiece, and the upper working portion is an upper fixed electrode of the welding device, and the welding The apparatus welds a nut elastically held at the elastic tip of the upper fixed electrode to the workpiece set so as to be movable in the horizontal direction on the lower movable electrode side that is the movable working portion.

  The perforated part is a nut that can be welded to a workpiece, and the working device is a welding device that welds the nut to the workpiece, and the upper working portion is an upper fixed electrode of the welding device, and the welding The apparatus sets the workpiece at a welding position of a nut elastically held at the elastic tip of the upper fixed electrode, and then welds the nut to the workpiece.

  The working part to which the perforated parts are supplied is, for example, a lower working part.

  The perforated part is a nut that can be welded to a workpiece, and the working device is a welding device that welds the nut to the workpiece, and the lower working portion is a lower movable electrode of the welding device, The welding apparatus welds a nut elastically held at the elastic tip of the lower movable electrode to the workpiece set so as to be movable in the horizontal direction on the upper fixed electrode side which is the upper working portion.

  The perforated part is a nut that can be welded to a workpiece, and the working device is a welding device that welds the nut to the workpiece, and the lower working portion is a lower fixed electrode of the welding device, The welding apparatus sets the workpiece at a welding position of a nut elastically held at the elastic tip of the lower fixed electrode, and then welds the nut to the workpiece.

  The perforated component automatic supply working device of the present invention further includes a nut pressing mechanism that presses a side surface of the subsequent perforated component following the leading perforated component in the chute and restricts the advancement of the subsequent perforated component. The nut presser mechanism is controlled to allow advancement of the subsequent perforated part away from the side surface of the subsequent perforated part when the chute is at the retracted end. By adopting such a configuration, when the leading perforated part in the chute is held by the elastic tip of the guide shaft and pushes the stopper plate open and goes out of the chute, the subsequent perforated part is a nut presser mechanism. Thus, it is ensured that it is held in the chute, and it is possible to prevent a problem that the subsequent perforated part falls off the chute beyond the stopper plate that has been pushed open.

  Further, the perforated component automatic supply working device of the present invention includes a gate closing mechanism capable of acting on the stopper plate with a second urging force capable of maintaining the closed state of the chute tip opening, and the gate closing mechanism The second biasing force is applied to the stopper plate during a period from when the chute is at the forward end to when the chute retracts and the leading perforated part in the chute comes out of the chute. Does not work. By adopting such a configuration, the perforated parts can be securely moored in the chute by the gate closing mechanism while not performing the operation of taking the leading perforated parts outward from the chute tip opening. Moreover, by setting the magnitude of the first urging force by the elastic member to be small, the leading perforated part can be taken out from the chute tip opening portion with a small force.

  Here, the elastic member applies the first urging force to the stopper plate via a gate hinge provided at the tip of the stopper plate, and the gate closing mechanism includes a roller, the gate A hinge plate provided at a rear end portion of the hinge, and the gate closing mechanism receives the pressing force from the roller, whereby the second closing plate with respect to the stopper plate via the gate hinge. An urging force is applied, and the gate closing mechanism does not apply the second urging force to the stopper plate when the hinge plate is not in contact with the roller. By adopting such a configuration, it is possible to simplify the mechanism that causes the first urging force and the second urging force to act on the stopper plate.

  Hereinafter, embodiments of the present invention will be described with reference to the drawings.

  FIG. 1 is a schematic configuration diagram of a first welding system in which a first perforated component automatic supply working device according to an embodiment of the present invention is incorporated, and FIG. 2 is a front sectional view of the first perforated component automatic supplying work device. 3 is a front view of the first perforated component automatic supply working device, FIG. 4 is a plan view of the first perforated component automatic supplying work device, and FIG. 5 is a rear view of the first perforated component automatic supplying work device. 6 is a view taken along the arrow VI in FIG. 4, FIG. 7 is a sectional view taken along the line VII-VII in FIG. 3, FIG. 8 is a sectional view taken along the line VIII-VIII in FIG. FIG. 10 is an explanatory view of the nut pressing mechanism when the chute is at the retracted end, FIG. 10 is a plan sectional view when the nut is restrained, and FIG. FIG. 12 is a front sectional view for explaining the holding operation, FIG. 12 is an enlarged view of the main part of FIG. 11, and FIG. 14 is a front sectional view for explaining the take-out operation, FIG. 14 is an explanatory view of alignment of the first perforated component automatic supply working device, FIG. 15 is a front view of the guide shaft, and FIG. 16 is a bottom view of the guide shaft. FIG. 17 is a process diagram of a welding operation using the first perforated component automatic supply operation device, and FIG. 18 is a second welding in which the second perforated component automatic supply operation device according to the embodiment of the present invention is incorporated. FIG. 19 is a schematic diagram of the system, FIG. 19 is a process diagram of a welding operation using the second perforated component automatic supply operation device, and FIG. 20 is another welding operation process using the second perforated component automatic supply operation device. FIG. 21, FIG. 21 is a schematic configuration diagram of a third welding system in which the third perforated component automatic supply working device according to the embodiment of the present invention is incorporated, and FIG. 22 uses the third perforated component automatic supplying work device. FIG. 23 is a process diagram of welding work that has been performed, and FIG. Schematic diagram of a fourth welding system fourth perforated parts automatic supplying working device is incorporated, FIG. 24 shows a process diagram of a welding operation using a fourth perforated parts automatic supplying working device, respectively.

A. First perforated parts automatic supply work device (Figs. 1-17)
The first welding system shown in FIG. 1 includes a first nut automatic supply operation device 300A as a first perforated component automatic supply operation device, a nut feeder 400 as a perforated component feeder, and a robot 500.

  The first nut automatic supply work device 300A includes a first nut automatic supply device 3A as a component automatic supply device and a stationary first welding device 4A as a work device.

  The first welding apparatus 4A includes a lower fixed electrode 1A as a fixed side working part and a lower side working part, and an upper movable electrode 2A as a movable side working part and an upper side working part. The upper movable electrode 2 </ b> A can be moved up and down by the driving means 301. The upper movable electrode 2A is provided with a guide shaft 26 shown in FIG. The guide shaft 26 can be moved up and down by a cylinder 302.

  The first nut automatic supply device 3A is attached to the first welding device 4A so that the attachment position can be adjusted, and can approach and separate from the lower position of the upper movable electrode 2A. The first nut automatic supply device 3A is connected to a nut feeder 400, and a nut 200 as a perforated part illustrated in FIG. 2 and the like is fed from the nut feeder 400 to the first nut automatic supply device 3A by air.

(1) Lower fixed electrode 1A
The lower fixed electrode 1A is fixedly arranged in the welding apparatus 4A. As shown in FIG. 14, the lower fixed electrode 1 </ b> A includes a lower electrode tip 11 at its upper end, and a guide pin 12 that can be moved back and forth in the vertical direction is disposed on the lower electrode tip 11. It is connected to an air cylinder (not shown). The guide pin 12 is at the retracted end when the workpiece 100 is moving near the upper surface of the lower electrode chip 11 and is kept buried under the upper end surface 11 a of the lower electrode chip 11. Further, when the workpiece 100 is placed at a normal position with respect to the upper end surface 11a of the lower electrode chip 11 and the guide pin 12 by the robot 500, the guide pin 12 moves upward and is positioned at the forward end, and the lower electrode chip. 11 is projected upward from the upper end surface 11a. The nut 200 is also aligned with the guide pin 12 and placed on the upper surface 100a of the workpiece 100. The nut 200 is welded to the workpiece 100 by energizing the nut 200 while applying pressure to the upper movable electrode 2A.

(2) Upper movable electrode 2A
As shown in FIG. 14, the upper movable electrode 2A is arranged directly above the lower fixed electrode 1A so that its axis coincides with the axis of the lower fixed electrode 1A. The upper movable electrode 2A is raised and lowered by the driving means 301. The upper movable electrode 2 </ b> A includes a chip holder 23 and an upper electrode chip 24 fixed to the chip holder 23. The chip holder 23 and the upper electrode chip 24 form a guide hole 25 penetrating in the vertical direction, and a guide shaft 26 is accommodated in the guide hole 25. The guide shaft 26 is connected to a cylinder 302 disposed on the upper portion of the upper movable electrode 2A, and is advanced and retracted in the vertical direction by the cylinder 302 in a state where the axial center is kept constant. The guide shaft 26 has a forward end (lowering position), that is, a state where the elastic tip of the guide shaft 26 protrudes downward from the lower end electrode surface 24a of the upper electrode tip 24, and a backward end (upward position) shown by a solid line in FIG. That is, the guide shaft 26 can be stored in the guide hole 25. Further, as shown in FIG. 16, the elastic tip of the guide shaft 26 is formed with a cross-shaped cut 26a in a bottom view, and the elastic tip of the guide shaft 26 has elasticity. The four divided pieces 26b forming the cuts 26a are each formed in a bow shape so as to increase in diameter toward the tip, and the outer diameter of the entire tip of the four divided pieces 26b is larger than the outer diameter of the guide shaft 26. Slightly larger. The outer diameter of the tip portion allows the four divided pieces 26b to be inserted into the screw holes 200a of the nut 200 with a slight pressure, and the four divided pieces 26b continue to hold the nut 200 after insertion. It is set to be able to demonstrate. Although the number of divided pieces 26b is four in the present embodiment, two or more pieces may be used.

  The guide shaft 26, the guide hole 25, the cylinder 302 and the like constitute nut elastic holding means as perforated part elastic holding means.

(3) First nut automatic feeder 3A
1-16, the 1st nut automatic supply apparatus 3A has the supply head part 3a and the nut supply part 3b.

[3a] Supply head 3a
The supply head portion 3 a has a head mounting plate 101, and a columnar device holder 101 a is welded to the head mounting plate 101. The device holder 101a is fixed to the welding device 4A so that the attachment position can be adjusted.

  A base plate 102 is fixed to the front surface of the head mounting plate 101 (the surface on the nut supply portion 3b side) with screws 103.

  A linear bearing 104 is fixed to the front surface of the base plate 102. Further, a stroke regulating bar 106 that regulates the advance end of the nut supply portion 3b to be adjustable is screwed onto the rear surface of the base plate 102. A holding plate 108 that holds the link bar 107 of the nut pressing mechanism B is fixed to the front surface of the base plate 102 with screws 109. A cylinder bracket 111 that cantilever-holds the air cylinder 110 is fixed to the front surface of the base plate 102. As shown in FIGS. 5 and 6, a head positioning plate 112 for positioning the supply head portion 3 a with respect to the head mounting plate 101 is fixed to the lower surface of the base plate 102 with screws 113. In addition, a roller holding rod 115 that rotatably holds the roller 114 of the gate closing mechanism C is fixed to the front surface of the base plate 102.

  The air cylinder 110 has a cylinder rod 116, and the cylinder rod 116 is moved in the front-rear direction by air flowing into and out of the air cylinder 110. Air flows into and out of the air cylinder 110 from two cylinder joints 117 and 118 connected to an air source (not shown). The air cylinder 110 detects the forward end of the cylinder rod 116, in other words, the forward end sensor 119 that detects the forward end of the nut supply portion 3b, and the forward end of the cylinder rod 116, in other words, the backward end of the nut supply portion 3b. A backward end sensor 120 is provided.

  The front end portion of the cylinder rod 116 is fixed to the stopper bracket 122 via the rod joint 121, and the stopper bracket 122 is fixed to the rear rear end portion of the slide plate 105. The slide plate 105 has a slide rail 123 along the front-rear direction on the back surface, and the slide rail 123 is held by a linear bearing 104 so as to be movable in the front-rear direction.

  A nut pressing mechanism B is provided at the front rear end of the slide plate 105.

  The nut pressing mechanism B includes a housing 124 that is fixed to the back surface of the slide plate 105. An end plate 125 is fixed to the rear side end face of the housing 124. A nut pressing pin 126 is accommodated in the housing 124. The distal end portion 126a of the nut pressing pin 126 is positioned in the pressing holes 105a and 127a formed in the slide plate 105 and the chute 127, respectively. The rear end portion 126 b of the nut pressing pin 126 passes through the hole of the end plate 125 and is located outside the end plate 125. A link receiving plate 128 is fixed to the rear end portion 126 b of the nut pressing pin 126. The central portion 126 c of the nut pressing pin 126 is accommodated inside the housing 124 so as to be movable in the axial direction of the nut pressing pin 126. A spring 129 is accommodated between the center portion 126 c of the nut pressing pin 126 and the end plate 125. The spring 129 applies an urging force in a direction in which the central portion 126c of the nut pressing pin 126 approaches the nut supply portion 3b. The housing 124 and the end plate 125 have a link receiving groove 131 for receiving the plate-like link 130. The plate-like link 130 is rotatable around the link pin 132 in the link receiving groove 131. The front end portion 130 a of the plate link 130 can be engaged with the link receiving plate 128. The rear end portion 130 b of the plate link 130 can be engaged with the link bar 107.

[3b] Nut supply part 3b
The nut supply unit 3 b includes a chute 127 fixed to the front surface of the slide plate 105. The upper part of the chute 127 constitutes a nut feeding path 127b having a substantially U-shaped cross section. The passage width of the nut feeding path 127 b is set slightly larger than the width of the nut 200. A pair of chute covers 145 and 145 are fixed to the upper end surface of the nut feeding path 127b at a predetermined interval. The distance between the pair of chute covers 145 and 145 is set to be larger than the outer diameter of the distal end portion of the guide shaft 26, and the distal end portion of the guide shaft 26 can be lowered into the nut feed path 127b. An alignment pin hole 127 c is formed at the front end of the chute 127.

  A supply pipe 133 having a flange 133a at the front end is fixed to the rear end surface of the nut feed path 127b with a screw 134. A flexible feed hose 402 connected to the escapement 401 on the nut feeder 400 side is connected to the supply pipe 133. The escapement 401 separates the nuts 200 continuously fed from the nut feeder 400 one by one and sends them to the feed hose 402.

  A gate hinge 135 is disposed on the lower surface of the front portion of the chute 127. The gate hinge 135 has a square hole portion 135a penetrating in the vertical direction. At the front end of the gate hinge 135, an alignment pin hole 135b penetrating in the vertical direction is formed. A stopper plate 136 is fixed to the front end portion of the gate hinge 135 with a screw 137. The upper surface 136a of the stopper plate 136 is configured by an inclined surface whose rear end is higher than the floor surface of the nut feeding path 127b and becomes higher from the rear end toward the front end.

  A hinge spring 138 is accommodated in the square hole 135 a of the gate hinge 135. A hinge pin 140 is spanned between the slide plate 105 and the front plate 139. The coil portion 138 a of the hinge spring 138 is attached to the hinge pin 140, the front end portion 138 b of the hinge spring 138 is locked to the lower surface of the gate hinge 135, and the rear end portion 138 c is locked to the lower surface of the chute 127. The hinge spring 138 always applies a first urging force against the gate hinge 135 to lightly press the gate hinge 135 against the lower surface of the chute 127.

  A hinge plate 141 is fixed to the lower surface of the rear end portion of the gate hinge 135 with screws 142. The front portion 141a of the hinge plate 141 is configured in parallel with the moving direction of the chute 127, and the rear portion 141b is configured to incline downward toward the rear. A roller 114 is disposed on the upper surface 141c side of the hinge plate 141.

  A front plate 139 is fixed to the front surface of the chute 127. The front plate 139 is provided with a leading nut sensor 143 that detects the leading nut 200A in the chute 127, and a trailing nut 200E in the chute 127, that is, an nth nut sensor 144 that detects the nth nut 200E. Is done.

(4) Operation Procedure and Operation of First Nut Automatic Supply Working Device 300A Next, an operation procedure and operation of the first nut automatic supply operation device 300A configured as described above will be described.

1) Preparatory work
a. The chute 127 is aligned with the upper movable electrode 2A.

  The device holder 101a of the head mounting plate 101 is fixed at a predetermined position of the first welding device 4A. The head positioning plate 112 is temporarily tightened in a state where the head positioning plate 112 is applied to the lower surface of the head mounting plate 101 from below. The guide shaft 26 of the upper movable electrode 2A is retracted (raised). The first nut automatic supply device 3A is advanced manually or with the air circuit shut off. The alignment pin 72 is inserted from below the alignment pin holes 135b and 127c, and the forward end is adjusted so that the tip of the alignment pin 72 fits into the guide hole 25 of the upper movable electrode 2A. The position of the tip of the alignment pin 72 fitted in the guide hole 25, that is, the position where the axis of the upper movable electrode 2A and the center of the screw hole 200a of the leading nut 200A in the chute 127 coincide with each other is advanced. The supply head 3 a is finally tightened to the head mounting plate 101.

    b. Manually move the movable part such as the chute 127 to the retracted end, connect the feed hose 402 to the supply pipe 133, and feed a plurality of nuts 200 from the nut feeder 400 into the chute 127.

  When the chute 127 is at the retracted end, as shown in FIG. 9, the plate link 130 of the nut presser mechanism B is engaged with the link bar 107, and the tip 130 a of the plate link 130 is attached to the spring 129. The link receiving plate 128 is lifted by overcoming the force, and the tip end portion 126a of the nut pressing pin 126 is maintained at the retracted end that does not enter the inside of the chute 127. For this reason, the leading nut 200A fed into the chute 127 is fed to the rear surface of the stopper plate 136 without being restricted by the nut pressing pin 68e, and the trailing nut 200B and the like are located behind the leading nut 200A. Other nuts 200 are fed continuously.

  When the chute 127 is at the retracted end, the roller 114 of the gate closing mechanism C presses the hinge plate 141 downward as shown in FIG. Therefore, the front end portion of the gate hinge 135 is strongly pressed against the lower surface of the chute 127 with the hinge pin 140 as a fulcrum. The force by the roller 114 is a second biasing force that is sufficiently larger than the small biasing force by the hinge spring 136. Therefore, the stopper plate 136 receives a small first urging force by the hinge spring 138 and a large second urging force by the roller 114, and maintains the tip opening 127d of the chute 127 in a closed state. Therefore, the plurality of nuts 200 fed into the chute 127 are securely held in the chute 127.

2) Welding work
a. The workpiece 100 is set on the guide pin 12 by the robot 500 (FIG. 17A). In FIG. 17A, reference numeral 501 represents the hand of the robot 500. When the hand 501 receives an external force, for example, the force of the guide pin 12 applied to the positioning hole of the work 100, the work 501 The workpiece 100 is held so as to allow the movement of the 100 in the horizontal direction. The work holding method by the hand 501 is the same in the welding operations of the second nut automatic supply work device 300B, the third nut automatic supply work device 300C, and the fourth nut automatic supply work device 300D described later.

    b. Start the first welding device 4A.

  When the first welding device 4A is activated, the air circuit of the cylinder 110 is switched, the cylinder rod 116 moves backward, and the slide plate 105 moves forward while being guided by the slide rail 123.

  During this advancement, the plate link 130 is separated from the link bar 107, so that the nut pressing pin 126 moves forward by the biasing force of the spring 129, and the nut pressing pin 126 presses the side surface 200b of the subsequent nut 200B as shown in FIG. To come. For this reason, the subsequent nut 200B is restricted from moving forward.

  When the chute 127 reaches the forward end, in other words, when the stopper bracket 122 comes into contact with the stroke restricting bar 106, the hinge plate 141 is positioned away from the roller 114 as shown in FIG. No downward pressure from 114 is received. Therefore, the gate hinge 135 is pressed against the lower surface of the chute 56 only by a small first urging force by the hinge spring 138. Accordingly, the stopper plate 136 maintains the tip opening 127d of the chute 127 in a closed state by a small first biasing force.

    c. When the forward end sensor 119 detects that the chute has reached the forward end, the guide shaft 26 is lowered to the forward end (lowering position) by the driving means 301 of the upper movable electrode 2A.

  When the guide shaft 26 descends to the forward end, the four divided pieces 26b of the guide shaft 26 are elastically deformed and inserted into the screw holes 200a of the leading nut 200A in the chute 127 to hold the leading nut 200A (FIG. 17). (B)).

    d. After a predetermined time elapses, the air circuit of the cylinder 110 is switched, the cylinder rod 116 moves forward, and the chute 127 moves backward to the retracted end (FIG. 17C).

  As the chute 127 moves backward, the upper movable electrode 2A is lowered, and the holding nut 200D elastically held by the guide shaft 26 is fitted into the guide pin 12 of the lower fixed electrode 1A. Here, the guide shaft 26 rises when the holding nut 200D is transferred to the guide pin 12, and retracts into the upper movable electrode 2A. The rising timing of the guide shaft 26 is controlled by a timer of a control circuit (not shown). Further, a sensor that is turned on at the time of nut delivery may be provided, and the guide shaft 26 may be raised based on a detection signal of this sensor. A pressure is applied between the lower fixed electrode 1A and the upper movable electrode 2A to weld a welding nut 200E (holding nut 200D set on the workpiece 100) to the workpiece 100 (FIG. 17D). The upper movable electrode 2A is raised simultaneously with the completion of welding.

  Immediately after the start of retraction of the chute 127, the gate hinge 135 is pressed against the lower surface of the chute 127 only by a small first urging force by the hinge spring 138, so that the four divided pieces 26b of the guide shaft 26 of the upper movable electrode 2A The leading nut 200A that is elastically held by the screw pushes open the stopper plate 136 and exits from the tip opening 127d of the chute 127 while sliding on the upper surface 136a of the stopper plate 136. At this time, if the screw diameter of the screw hole 200a of the leading nut 200A is larger than the regular thread diameter, the four divided pieces 26b cannot fall elastically and thus fall. Further, when the leading nut 200A has a screw diameter smaller than the regular thread diameter, the four split pieces 26b do not fit into the screw holes 200a, and therefore when the leading nut 200A comes out of the chute 127, It will fall as well. For this reason, the four divided pieces 26b of the guide shaft 26 exert an action of automatically selecting a regular nut and a different nut. Further, the four divided pieces 26b act on the entire circumference of the screw hole 200a of the leading nut 200A (at this time, the holding nut 200D) to elastically hold the holding nut 200D by elastically holding the holding nut 200D. Is held while maintaining a constant posture, and the individual holding nuts 200D can always be set on the workpiece 100 in the same posture.

  Further, until the chute 127 moves back to the vicinity of the retracted end, the nut pressing pin 126 continues to press the side surface 200b of the subsequent nut 200B, and the subsequent nut 200B is restricted from moving forward. When the chute 127 moves back to the vicinity of the retracted end, the plate-like link 130 hits the link bar 107, rotates around the link pin 132, overcomes the urging force of the spring 129, and the tip portion 130a of the plate-like link 130 links. The receiving plate 128 is pushed up. For this reason, the nut presser pin 126 moves backward, separates from the side surface 200b of the subsequent nut 200B, and the subsequent nut 200B can move forward.

  Further, when the chute 127 moves backward, the hinge plate 141 starts to contact the roller 114 and receives a downward pressing force from the roller 114, and the gate hinge 135 receives a small first biasing force by the hinge spring 138. In addition, the gate hinge 135 is strongly pressed against the lower surface of the chute 127 by receiving a large second biasing force with the hinge pin 140 as a fulcrum from the roller 114. Therefore, the succeeding nut 200B and the other nuts 200 in the chute 127 are securely held in the chute 127.

    e. When the backward end sensor 120 detects that the cylinder rod 116 has reached the forward end, in other words, the chute 127 has reached the backward end, one stroke is completed.

    f. A new nut 200 is supplied from the escapement 401 of the nut feeder 400 into the chute 127, and the leading nut sensor 143 and the nth nut sensor 144 are replaced with a new leading nut 200A and a rear end nut 200F, that is, an nth nut, respectively. Wait for the next activation until 200F is detected.

  Thereafter, the above a to f are repeated. Here, the workpiece 100 is set on the lower fixed electrode 1A after the upper movable electrode 2A starts to rise after welding is completed, and the upper movable electrode 2A is elastically held by the guide shaft 26 of the upper movable electrode 2A. This is done until 2A starts to descend. The workpiece 100 is set by lowering the guide pin 12 of the lower fixed electrode 1A and moving the workpiece 100 by the robot 500 until the workpiece position (positioning hole) where the next nut 200 is welded reaches the position of the guide pin 12. This is done by moving horizontally and then raising the guide pin 12.

  Thus, the operation of holding the nut 200 on the upper movable electrode 2A can be performed independently of the operation of moving the workpiece 100 in and out of the lower fixed electrode 1A, and the operation time can be shortened.

  As described above, the first nut automatic supply working device 300A includes the first welding device (working device) 4A having the upper movable electrode (movable side working portion) 2A and the lower fixed electrode (fixed side working portion) 1A. The first nut automatic supply device (automatic component supply device) 3A for supplying a nut (perforated component) 200 to the upper movable electrode 2A is arranged. The first nut automatic supply device 3A aligns the nuts 200 in a row. A chute 127 that can be housed and moved forward and backward, a stopper plate 136 that opens and closes the tip opening 127d of the chute 127, and a first direction in which the chute tip opening 127d is closed with respect to the stopper plate 136. A guide shaft that is provided on a hinge spring (elastic member) 138 that constantly applies an urging force and an upper movable electrode 2A to which a nut 200 is supplied and that can reciprocate. 26, and when the chute 127 is at the forward end, four divided pieces (elastic tip portions) 26b of the guide shaft 26 are inserted into the holes of the leading nut 200A in the chute 127, and then the chute 127 is retracted. When this occurs, the leading nut 200A held by the split piece 26b overcomes the first urging force by the hinge spring 138 to push open the stopper plate 136, and the leading nut 200A protrudes outward from the tip opening 127d of the chute 127. And is elastically held by the divided piece 26b.

  According to the first automatic nut supplying apparatus 300A, the nuts 200 are accommodated in a row in the chute 127, and the leading nut 200A is supplied to the upper movable electrode 2A in the raised position, and at the elastic tip 26b of the guide shaft 26. Since the nut 200D is elastically held, the nut 200D can be applied to an outer projection perforated part and the like, and the nut 200 is reliably supplied and held to the upper movable electrode 2A while ensuring a working space between the upper and lower electrodes 1 and 2. Can be made.

  The first nut automatic supply operation device 300A includes a nut pressing mechanism B that presses the side surface 200b of the subsequent nut 200B following the leading nut 200A in the chute 127 and restricts the forward movement of the subsequent nut 200B. Is controlled to allow the subsequent nut 200B to move forward away from the side surface 200b of the subsequent nut 200B when the chute 127 is at the retracted end. Since such a configuration is adopted, when the leading nut 200A in the chute 127 pushes open the stopper plate 136 while being held by the elastic tip portion 26b of the guide shaft 26 and goes out of the chute 127, the succeeding nut 200B is a nut presser. The mechanism B is surely held in the chute 127, and the trouble that the succeeding nut 200B falls off the chute 127 beyond the stopper plate 136 that has been pushed open can be prevented.

  In addition, since the first nut automatic supply work device 300A has the above-described configuration, the device can be reduced in size and can be operated with high reliability.

  Further, the first nut automatic supply operation device 300A includes a gate closing mechanism C capable of acting on the stopper plate 136 with a second urging force capable of maintaining the closed state of the chute tip opening portion 127d. The second urging force is not applied to the stopper plate 136 during the period from when the chute 127 is at the forward end until the chute 127 moves backward and the leading nut 200A in the chute 127 comes out of the chute 127. Since such a configuration is adopted, the nut 200 can be securely moored in the chute 127 by the gate closing mechanism C while the operation of taking out the leading nut 200A from the chute tip opening 127d to the outside is not performed. By setting the magnitude of the first urging force by the hinge spring 138 to be small, the leading nut 200A can be pulled out from the chute tip opening 127d with a small force.

  Further, the hinge spring 138 applies a first urging force to the stopper plate 136 via the gate hinge 135 provided with the stopper plate 136 at the tip, and the gate closing mechanism C includes the roller 114 and the gate hinge. 135 is provided with a hinge plate 141 provided at the rear end of the gate 135. The gate closing mechanism C receives a pressing force from the roller 114, so that the gate closing mechanism C receives a second force with respect to the stopper plate 136 via the gate hinge 135. The biasing force is applied, and the gate closing mechanism C does not apply the second biasing force to the stopper plate 136 when the hinge plate 141 is not in contact with the roller 114. Since such a configuration is employed, it is possible to simplify the mechanism that causes the first urging force and the second urging force to act on the stopper plate 136.

  In addition, since the elastic tip portion 26b of the guide shaft 26 is configured to elastically hold only a normal nut having a normal screw diameter, a different type nut having a screw diameter different from the normal screw diameter is elasticized by the elastic tip portion of the guide shaft. Since it is not held, regular nuts and different nuts can be automatically selected.

  In addition, it is inserted from below into alignment pin holes 135b and 127c formed in the floor portions of the gate hinge 135 and the chute 127 in the vertical direction, and the tip portion is fitted into the guide hole 25 of the upper movable electrode 2A. Since the alignment pin 72 for initially setting the forward end of 127 is provided, the initial setting of the forward end of the chute 127 can be easily performed.

  Further, when the leading nut 200A is supplied to the upper movable electrode 2A, the trailing nut 200B can be reliably separated from the leading nut 200A and restrained in the chute 127. Further, since the posture of the holding nut 200D elastically held by the guide shaft 26 can be kept constant, it is possible to effectively cope with welding in which the posture direction of the nut 200 is required. In addition, since the workpiece 100 can be taken in and out while the nut 200 is held on the upper movable electrode 2A, the working time can be shortened.

B. Second perforated component automatic supply working device (FIGS. 18 to 20)
The second welding system shown in FIG. 18 includes a second nut automatic supply operation device 300B as a second perforated component automatic supply operation device, a nut feeder 400 as a perforated component feeder, and a robot 500.

  The second nut automatic supply work device 300B includes a second nut automatic supply device 3B as a component automatic supply device and a stationary second welding device 4B as a work device.

  The second welding device 4B includes a lower movable electrode 1B as a movable side working part and a lower side working part, and an upper fixed electrode 2B as a fixed side working part and an upper side working part.

  The second nut automatic supply device 3B can be moved up and down by a driving means 304 attached to the second welding device 4B, and can approach and be separated from the lower position of the upper fixed electrode 2B. The second nut automatic supply device 3B is connected to the nut feeder 400, and the nut 200 as a perforated part is fed from the nut feeder 400 to the second nut automatic supply device 3B by air.

(1) Lower movable electrode 1B
The lower movable electrode 1B is configured in the same manner as the lower fixed electrode 1A of the first welding device 4A described above, and can be moved up and down by the driving means 303.

(2) Upper fixed electrode 2B
The upper fixed electrode 2B is configured in the same manner as the upper movable electrode 2A of the first welding device 4A described above, but cannot be moved up and down. The guide shaft 26 is moved up and down by a cylinder 302.

(3) Second nut automatic feeder 3B
The 2nd nut automatic supply apparatus 3B has the supply head part 3a and the nut supply part 3b.

[3a] Supply head 3a
The supply head portion 3a is configured in the same manner as the supply head portion 3a of the first nut automatic supply device 3A described above, and can be moved up and down by the driving means 304.

[3b] Nut supply part 3b
The nut supply unit 3b is configured in the same manner as the nut supply unit 3b of the first nut automatic supply device 3A described above.

(4) Operation Procedure and Operation of Second Nut Automatic Supply Working Device 300B Next, an operation procedure and operation of the second nut automatic supply operation device 300B configured as described above will be described.

  The second nut automatic supply operation device 300B performs a preparation operation similar to the preparation operation of the first nut automatic supply operation device 300A described above, and then a welding operation similar to the welding operation of the first nut automatic supply operation device 300A. (FIG. 19 (A)-(E) or FIG. 20 (A)-(E)) is performed. Here, FIGS. 19A to 19E correspond to welding work when the workpiece 100 is set on the lower movable electrode 1B by the robot 500, and FIGS. 20A to 20E are illustrated by the robot. This corresponds to the case where the workpiece 100 is held between the upper fixed electrode 2B and the lower movable electrode 1B.

  However, in the welding operation, after the state where the upper fixed electrode 2B holds the nut 200 (FIG. 19C or FIG. 20C), the second nut automatic supply device 3B and the workpiece 100 according to the shape of the workpiece 100 In order to prevent the interference, the second nut automatic supply device 3B is raised (FIG. 19D or FIG. 20D). Thereafter, the lower movable electrode 1B is raised to perform welding (FIG. 19E), or the workpiece 100 is raised to the welding position of the nut 200 (FIG. 20D), and then the lower movable electrode 1B is raised. Then, welding is performed (FIG. 20E). Further, after welding the nuts 200 one by one, the lower movable electrode 1B is lowered to the original position, and when the second nut automatic supply device 3B is raised, it is lowered to the original position. In the case of the welding work shown in FIG. 19, the work 100 is set in the same manner as the first nut automatic supply work device 300 </ b> A described above. This is done by moving the workpiece 100 horizontally by the robot 500 until reaching the position, and then raising the guide pin 12.

  Since the second nut automatic supply work device 300B is configured as described above, the same effects as those of the first nut automatic supply work device 300A described above can be obtained.

C. Third perforated component automatic supply device (Figs. 21 and 22)
The third welding system shown in FIG. 21 includes a third nut automatic supply operation device 300C as a third perforated component automatic supply operation device, a nut feeder 400 as a perforated component feeder, and a robot 500.

  The third nut automatic supply work device 300C includes a third nut automatic supply device 3C as a component automatic supply device and a stationary third welding device 4C as a work device.

  The third welding apparatus 4C includes a lower movable electrode 1C as a movable side working part and a lower side working part, and an upper fixed electrode 2C as a fixed side working part and an upper side working part.

  The third nut automatic supply device 3C can approach and separate from the upper position of the lower movable electrode 1C. The third nut automatic supply device 3C is connected to the nut feeder 400, and the nut 200 as a perforated part is fed by air from the nut feeder 400 to the third nut automatic supply device 3C.

(1) Lower movable electrode 1C
The lower movable electrode 1 </ b> C is configured in the same manner as the upper movable electrode 2 </ b> A of the first welding device 4 </ b> A described above, and can be moved up and down by the driving means 303. The guide shaft 26 is moved up and down by a cylinder 302.

(2) Upper fixed electrode 2C
The upper fixed electrode 2C is configured similarly to the lower fixed electrode 1A of the first welding device 4A described above.

(3) Third nut automatic feeder 3C
The 3rd nut automatic supply apparatus 3C has the supply head part 3a and the nut supply part 3b. The third nut automatic supply device 3C corresponds to the above-described first nut automatic supply device 3A that is reversed about the horizontal axis along the nut feed direction in the nut supply unit 3b. In FIG. 21, the arrangement of the supply head portion 3 a and the nut supply portion 3 b in the drawing front / back direction is reversed for easy understanding.

(4) Operation procedure and operation of the third nut automatic supply work device 300C The operation procedure and operation of the third nut automatic supply work device 300C are the above-described first automatic nut supply in the state shown in FIG. This is the same as the preparatory work and welding work of the working device 300A (FIGS. 17A to 17D and FIGS. 22A to 22D).

D. Fourth perforated parts automatic supply work device (Fig. 23, Fig. 24)
The fourth welding system shown in FIG. 23 includes a fourth nut automatic supply operation device 300D as a fourth perforated component automatic supply operation device, a nut feeder 400 as a perforated component feeder, and a robot 500.

  The fourth nut automatic supply work device 300D includes a fourth nut automatic supply device 3D as a component automatic supply device and a stationary fourth welding device 4D as a work device.

  The fourth welding apparatus 4D includes a lower fixed electrode 1D as a fixed side working part and a lower side working part, and an upper movable electrode 2D as a movable side working part and an upper side working part.

  The fourth nut automatic supply device 3D can approach and be separated from the upper position of the lower movable electrode 1D. The fourth nut automatic supply device 3D is connected to the nut feeder 400, and the nut 200 as a perforated part is fed from the nut feeder 400 to the fourth nut automatic supply device 3D by air.

(1) Lower fixed electrode 1D
The lower movable electrode 1D is configured in the same manner as the upper movable electrode 2B of the second welding device 4B described above, but cannot be moved up and down. The guide shaft 26 can be moved up and down by a cylinder 302.

(2) Upper movable electrode 2D
The upper movable electrode 2D is configured in the same manner as the lower fixed electrode 1B of the second welding device 4B described above, and can be moved up and down by the driving means 301.

(3) Fourth nut automatic feeder 3D
The fourth nut automatic supply device 3D is configured in the same manner as the above-described third nut automatic supply device 3C, and the supply head portion 3a can be moved up and down by the driving means 304.

(4) Operation procedure and operation of the fourth nut automatic supply working device 300D The operation procedure and operation of the fourth nut automatic supply operation device 300D are the above-described second nut automatic supply in a state where the state shown in FIG. It is the same as the preparatory work and welding work of the working device 300B (FIGS. 20A to 20E and FIGS. 24A to 24E).

  As described above, the first nut automatic supply operation device 300A and the second nut automatic supply operation device 300B supply the nut 200 as the perforated part to the upper movable electrode 2A or the upper fixed electrode 2B as the upper working portion. .

  Then, as shown in FIG. 17, the first nut automatic supply working device 300A is provided with an elastic tip 26b of the upper movable electrode 2A with respect to the workpiece 100 set so as to be movable in the horizontal direction toward the lower fixed electrode 1A. The nut 200 held elastically is welded.

  In addition, as shown in FIG. 19, the second nut automatic supply working device 300B has an elastic tip 26b of the upper fixed electrode 2B with respect to the workpiece 100 set so as to be movable in the horizontal direction toward the lower movable electrode 1B. The nut 200 held elastically is welded.

  Further, as shown in FIG. 20, the second nut automatic supply operation device 300B sets the workpiece 100 at the welding position of the nut 200 elastically held by the elastic tip portion 26b of the upper fixed electrode 2B, and then attaches to the workpiece 100. The nut 200 is welded.

  In addition, as described above, the third nut automatic supply working device 300C and the fourth nut automatic supply working device 300D have the nut 200 as the perforated part in the lower movable electrode 1C or the upper movable electrode 2D as the lower working portion. Supply.

  Then, as shown in FIG. 22, the third nut automatic supply working device 300 </ b> C has an elastic tip 26 b of the lower movable electrode 1 </ b> C with respect to the work 100 set so as to be movable in the horizontal direction toward the upper fixed electrode 2 </ b> C. Weld the nut held elastically.

  In addition, as shown in FIG. 24, the fourth nut automatic supply working device 300D sets the workpiece 100 at the welding position of the nut 200 elastically held by the elastic tip portion 26b of the lower fixed electrode 1D, and then attaches the workpiece 100 to the workpiece 100. The nut 200 is welded.

  In the above embodiment, the nut is used as the perforated component and the welding device is used as the working device. However, the present invention is widely applicable to components having holes other than the nut, and the welding device. The present invention can be widely applied to a working device having a pair of working parts, such as a caulking device other than the above.

It is a schematic block diagram of the 1st welding system in which the 1st perforated component automatic supply operation apparatus concerning the embodiment of this invention was integrated. It is front sectional drawing of a 1st perforated component automatic supply operation apparatus. It is a front view of the 1st perforated component automatic supply operation apparatus. It is a top view of the 1st perforated component automatic supply operation apparatus. It is a rear view of the 1st perforated component automatic supply operation apparatus. FIG. 6 is a view on arrow VI in FIG. 4. It is VII-VII sectional drawing shown in FIG. It is VIII-VIII sectional drawing shown in FIG. It is explanatory drawing of a nut pressing mechanism, Comprising: It is a plane sectional view when a chute | shoot is in a retracting end. It is explanatory drawing of a nut pressing mechanism, Comprising: It is a plane sectional view when the nut is restrained. It is front sectional drawing for demonstrating the operation | movement which conveys and holds a subsequent nut. It is a principal part enlarged view of FIG. It is front sectional drawing for demonstrating the operation | movement which takes out a leading perforated component from the inside of a chute. It is explanatory drawing of position alignment of a 1st perforated component automatic supply operation apparatus. It is a front view of a guide shaft. It is a bottom view of a guide shaft. It is process drawing of the welding operation | work using the 1st perforated component automatic supply operation apparatus. It is a schematic block diagram of the 2nd welding system in which the 2nd perforated component automatic supply work apparatus concerning the embodiment of the present invention was built. It is process drawing of the welding operation | work using the 2nd perforated component automatic supply operation apparatus. It is process drawing of the other welding operation | work using the 2nd perforated component automatic supply operation apparatus. It is a schematic block diagram of the 3rd welding system in which the 3rd perforated component automatic supply work apparatus concerning the embodiment of the present invention was built. It is process drawing of the welding operation | work using the 3rd perforated component automatic supply operation apparatus. It is a schematic block diagram of the 4th welding system in which the 4th perforated component automatic supply operation apparatus concerning the embodiment of the present invention was built. It is process drawing of the welding operation | work using the 4th perforated component automatic supply operation apparatus.

Explanation of symbols

1A Lower fixed electrode (fixed side working part)
1B Lower movable electrode (movable side working part)
1C Lower movable electrode (movable side working part)
1D lower fixed electrode (fixed side working part)
2A upper movable electrode (movable side working part)
2B Upper fixed electrode (fixed side working part)
2C Upper fixed electrode (fixed side working part)
2D upper movable electrode (movable side working part)
3A First nut automatic feeder (Perforated parts automatic feeder)
3B Automatic second nut supply device (Perforated component automatic supply device)
3C 3rd nut automatic feeder (Perforated parts automatic feeder)
3D fourth nut automatic feeder (perforated parts automatic feeder)
4A 1st welding equipment (working equipment)
4B Second welding equipment (working equipment)
4C 3rd welding equipment (working equipment)
4D 4th welding equipment (working equipment)
26 Guide shaft 26b Split piece (elastic tip)
100 Workpiece 114 Roller 127 Chute 127d End opening 136 Stopper plate 138 Hinge spring (elastic member)
141 Hinge plate 200 Nut (Perforated part)
300A First nut automatic supply work device (Perforated parts automatic supply work device)
300B Second nut automatic supply work device (Perforated parts automatic supply work device)
300C 3rd nut automatic supply work device (perforated parts automatic supply work device)
300D 4th nut automatic supply work device (perforated parts automatic supply work device)
B Nut presser mechanism
C Gate closing mechanism

Claims (11)

A working apparatus having a movable side working part and a fixed side working part, and an automatic parts supply device for supplying perforated parts to either the movable side working part or the fixed side working part. A perforated component automatic supply work device,
The component automatic supply device is
A perforated part arranged in a line and accommodated, and a chute capable of moving forward and backward;
A stopper plate for opening and closing the tip opening of the chute;
An elastic member that always applies a first urging force in a direction to close the chute tip opening to the stopper plate;
A guide shaft which is provided in the working portion on the side where the perforated parts are supplied and is capable of reciprocating;
With
When the chute is at the forward end, the elastic tip of the guide shaft is inserted into the hole of the leading perforated part in the chute, and then the tip held by the elastic tip when the chute is retracted The perforated part overcomes the first urging force by the elastic member to push open the stopper plate, and the leading perforated part exits outward from the tip opening of the chute and is elastic at the elastic tip. A perforated component automatic supply working device characterized by being configured to be held.   The perforated component automatic supply working device according to claim 1, wherein the working portion to which the perforated component is supplied is an upper working portion.   The perforated part is a nut that can be welded to a workpiece, and the working device is a welding device that welds the nut to the workpiece, and the upper working portion is an upper movable electrode of the welding device, and the welding The apparatus welds a nut elastically held at the elastic tip of the upper movable electrode to the workpiece set so as to be movable in the horizontal direction on the lower fixed electrode side which is the fixed-side working unit. The perforated component automatic supply work device according to claim 2,   The perforated part is a nut that can be welded to a workpiece, and the working device is a welding device that welds the nut to the workpiece, and the upper working portion is an upper fixed electrode of the welding device, and the welding The apparatus welds a nut elastically held at the elastic tip of the upper fixed electrode to the workpiece set to be movable in the horizontal direction on the lower movable electrode side which is the movable side working unit. The perforated component automatic supply work device according to claim 2,   The perforated part is a nut that can be welded to a workpiece, and the working device is a welding device that welds the nut to the workpiece, and the upper working portion is an upper fixed electrode of the welding device, and the welding 3. The perforated device according to claim 2, wherein the apparatus welds the nut to the work after setting the work at a welding position of a nut elastically held by the elastic tip of the upper fixed electrode. Automatic parts supply work device.   The perforated component automatic supply working device according to claim 1, wherein the working portion to which the perforated component is supplied is a lower working portion.   The perforated part is a nut that can be welded to a workpiece, and the working device is a welding device that welds the nut to the workpiece, and the lower working portion is a lower movable electrode of the welding device, The welding apparatus welds a nut elastically held at the elastic tip of the lower movable electrode to the workpiece set to be movable in the horizontal direction on the upper fixed electrode side which is the upper working portion. The perforated component automatic supply work device according to claim 6.   The perforated part is a nut that can be welded to a workpiece, and the working device is a welding device that welds the nut to the workpiece, and the lower working portion is a lower fixed electrode of the welding device, The welding apparatus according to claim 6, wherein the welding apparatus welds the nut to the workpiece after setting the workpiece at a welding position of a nut elastically held by the elastic tip of the lower fixed electrode. Hole parts automatic supply work device.   A nut presser mechanism is provided that presses a side surface of the subsequent perforated part following the leading perforated part in the chute and restricts the advancement of the subsequent perforated part, and the nut presser mechanism has the chute at the retracted end. 9. The perforated component automatic supply work device according to claim 1, wherein the device is controlled so as to allow advancing of the subsequent perforated component away from a side surface of the subsequent perforated component.   A gate closing mechanism capable of applying a second urging force capable of maintaining the closed state of the chute tip opening with respect to the stopper plate; and the gate closing mechanism from when the chute is at the forward end, 10. The second urging force is not applied to the stopper plate during a period from when the chute is retracted until the leading perforated part in the chute comes out of the chute. The perforated component automatic supply work device according to any one of the above. The elastic member acts the first urging force on the stopper plate via a gate hinge provided at the tip of the stopper plate,
The gate closing mechanism includes a roller and a hinge plate provided at a rear end portion of the gate hinge,
The gate closing mechanism applies the second urging force to the stopper plate via the gate hinge when the hinge plate receives a pressing force from the roller.
The perforated component automatic according to claim 10, wherein the gate closing mechanism does not apply the second urging force to the stopper plate when the hinge plate is not in contact with the roller. Supply work device.

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