JP5090071B2 - Small parts supply device - Google Patents

Description

  The present invention relates to a small component supply device that supplies small components such as nuts to a working device such as a spot welder.

Conventionally, as a nut supply device (small component supply device) for supplying a nut (small component) to a spot welder (working device), a supply rod that can be advanced and retracted in a direction perpendicular to the electrode axis of the welding machine has been provided. There is known a nut supply device that holds a nut on a rod, advances a supply rod until the nut is positioned directly below the upper movable electrode, and transfers the nut to the upper movable electrode as the upper movable electrode descends (for example, Patent Documents 1 and 2).
JP-A-6-238461 Japanese Patent Laid-Open No. 10-43870

  However, according to the above prior art, it is considered difficult to stably operate the supply rod because the stroke of the supply rod is long. In addition, according to the above-described prior art, since the supply rod can be moved back and forth in a direction orthogonal to the electrode axis of the welding machine, there is a problem that a work space such as work for setting the work on the lower fixed electrode is limited. there were.

  The present invention is not limited only to the nut supply device as described above, but provides the accessory component supply device that solves the above-described problems and can operate stably under a new and innovative idea. The purpose is to do. Another object of the present invention is to provide a small component supply apparatus capable of increasing the work space.

The accessory component supply device of the present invention is an accessory component supply device for supplying accessory components to a work device.
A movable chute having a tip positioned on the movement locus of the movable part of the working device;
The tip of the movable chute is configured with a pair of divided pieces, and the pair of divided pieces are configured to be able to approach or abut and separate from each other in the horizontal direction,
The tip is
When the pair of divided pieces are in a state of approaching or abutting each other, forming a parts receiving part that receives small parts fed from the upstream side and enables transfer to the working device; and When the pair of divided pieces are separated from each other, the movable unit of the working device is configured to form a space in which interference between the movable unit and the pair of divided pieces does not occur when the movable unit moves .
A fixed chute for feeding small parts to the component receiving portion formed by the tip of the movable chute is extended obliquely upward from the tip of the movable chute,
A gate is disposed at the tip of the fixed chute,
The gate maintains a shut-off state while the distal end of the movable chute does not form the component receiving portion and waits for small parts in the fixed chute, and the distal end of the movable chute forms the component receiving portion. Then, it is configured to enable the movement to the parts receiving portion of the waiting small parts by transitioning to the open state,
The fixed chute is provided with a selector,
The selector makes the subsequent small parts that follow the small small parts waiting when the small parts are waiting in the fixed chute by the gate, and then the gate shifts to an open state and the fixed chute When the accessory part moves to the parts receiving part and the gate shifts to the shut-off state, the succeeding accessory part can be moved to the gate and the succeeding accessory part follows the succeeding accessory part. Is configured to wait,
The movable chute has an operation lever portion extending in an obliquely upward direction from each of the divided pieces, and each operation lever portion is configured to be swingable about a bent portion.
As a configuration in which a reciprocating body that reciprocates along the moving direction of the accessory part is disposed, and the movable chute, the gate, and the selector are operated in conjunction with one reciprocating movement of the reciprocating body,
The reciprocating body is a pair of driven rollers disposed at a predetermined interval in a direction orthogonal to the moving direction of the reciprocating body, and the outer side surfaces of the pair of operating lever portions of the movable chute A pair of driven rollers for pressing,
The pair of driven rollers cause the pair of divided pieces of the movable chute to transition from a separated state to an approaching or contacting state when the reciprocating body moves forward, and the reciprocating body moves backward. when, characterized Rukoto moves it to the pair of divided pieces of the movable chute from approaching or contacting state to the separated state.

  According to the accessory component supply device of the present invention, the pair of split pieces constituting the distal end portion of the movable chute need only be separated in the horizontal direction so as to secure a space that does not hinder the movement of the movable portion of the working device. The amount is small and it is easy to ensure stable operation.

  Here, when a fixed chute for feeding small parts to the component receiving portion formed by the tip portion of the movable chute is extended obliquely upward from the tip portion of the movable chute, the electrode shaft as described in the prior art Compared with the case where the fixed chutes are provided in the direction orthogonal to the direction, that is, in the lateral direction, the work space is increased and the workability is improved.

  In addition, a gate is provided at the distal end of the fixed chute, and the gate maintains a shut-off state while the distal end of the movable chute does not form the component receiving portion, and allows small parts to wait in the fixed chute, When the tip portion of the movable chute forms the component receiving portion, the state shifts to an open state, and the waiting small component can be moved to the component receiving portion. If comprised in this way, it will become possible to supply a small component continuously to a component receiving part.

  Further, a selector is provided in the fixed chute, and when the small component is waiting in the fixed chute by the gate, the selector waits the subsequent small component following the small component that is waiting, and then the gate. Shifts to the open state, the small parts in the fixed chute move to the parts receiving part, and when the gate further shifts to the shut-off state, the subsequent small parts can be moved to the gate and The subsequent succeeding accessory part following the succeeding accessory part is made to wait. If comprised in this way, it will become possible to supply small parts further continuously to a components receiving part.

  Further, the movable chute has an operation lever portion extending in a diagonally upward direction from each of the divided pieces, and each operation lever portion is configured to be swingable around a bent portion. The If comprised in this way, it will become possible to implement | achieve approach or contact | abut and separation of a pair of division | segmentation piece by rocking | fluctuation operation | movement of a pair of actuating lever part.

  In addition, a reciprocating body that reciprocates along the moving direction of the small parts is provided, and the movable chute, the gate, and the selector are operated in conjunction with one reciprocating movement of the reciprocating body. If comprised in this way, a movable chute, a gate, and a selector can be operated only with one drive source which drives a reciprocating body.

  The reciprocating body is a pair of driven rollers disposed at a predetermined interval in a direction orthogonal to the moving direction of the reciprocating body, and is provided on each outer side of the pair of operating lever portions of the movable chute. A pair of driven rollers that press the side surfaces, and the pair of driven rollers cause the pair of divided pieces of the movable chute to transition from a separated state to an approaching or contacting state when the reciprocating body moves forward. And when the reciprocating body moves backward, the pair of split pieces of the movable chute are shifted from the approaching or contacting state to the separated state. If comprised in this way, a movable chute | shoot can be operated by the reciprocating motion of a reciprocating body.

  The reciprocating body includes an extruding rod that pushes a waiting small component in the fixed chute that is movable by the gate being changed to an open state during forward movement from the rear toward the component receiving portion. . If comprised in this way, a small component can be reliably moved to a component receiving part, and small components are stably hold | maintained at a component receiving part.

  The gate is provided at a front end portion of a swing lever that swings on a vertical surface in conjunction with the pair of operating lever portions, and is configured to be able to appear and retract from below in front of a component outlet of the fixed chute. If comprised in this way, since a pair of actuating lever part is act | operated by the reciprocating motion of a reciprocating body as mentioned above, a gate can be actuated by the reciprocating motion of a reciprocating body.

  The selector includes a front locking piece and a rear locking piece, the front locking piece restricts and allows movement of the subsequent small parts, and the rear locking piece restricts movement of the rear subsequent parts. And tolerate. If comprised in this way, it will become possible to make small parts stand by continuously to the parts supply upstream side of a selector.

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

  1 is a schematic side view having a partial cross section of a nut supply device according to an embodiment of the present invention, and is a side view when a reciprocating body is in a retracted position, and FIG. 2 is a nut shown in FIG. FIG. 3 is a front view of the supply device viewed from a direction orthogonal to the longitudinal direction thereof, FIG. 3 is a schematic side view having a partial cross section of the nut supply device when the reciprocating moving body is in the middle of advancement, and FIG. The front view which looked at the nut supply device of illustration from the direction orthogonal to the longitudinal direction, FIG. 5 is a schematic side view which has a partial section of the above-mentioned nut supply device when a reciprocating body is in an advance position, and FIG. 5 is a front view of the nut supply device shown in FIG. 5 as viewed from a direction perpendicular to the longitudinal direction thereof, FIG. 7 is an operation explanatory view of the movable chute, FIG. 8 is an operation explanatory view of the gate, and FIG. 9 is an operation of the selector. FIG. 10 and FIG. 10 are diagrams for explaining the operation of the push rod.

  1 to 10, a nut supply device 100 as a component supply device is a device that supplies a nut 300 to a lower end portion 201 of an upper movable electrode 200 as an elevating member of a spot welder as a work device.

  The nut supply device 100 is disposed so as to extend obliquely upward from the lower vicinity of the upper movable electrode 200 to the rear of the upper movable electrode 200, and the nut 300 is fed from a nut feeder (not shown) to the nut supply device 100. come. The nut supply device 100 is fixedly arranged on a stationary spot welder.

  The nut supply device 100 includes a fixed chute 1 that is fixed to the stationary spot welder side. The fixed chute 1 is connected to a feeding hose 2 connected to the nut feeder side. The fixed chute 1 has a linear nut passage 11 through which nuts 300 pass in a row. A linear opening 12 is formed in the upper wall portion of the fixed chute 1 so as to communicate with the nut passage 11 and extend along the moving direction of the nut 300. The tip of the nut passage 11 is a nut outlet 13. On the upper surface of the fixed chute 1, an inclined surface portion 14 whose height position is continuously lowered along the moving direction of the nut 300 is partially formed.

  A selector 3 is disposed at the rear end of the fixed chute 1. The selector 3 has a front locking piece 31 and a rear locking piece 32 that can be projected and retracted in the nut passage 11 of the fixed chute 1. The front locking piece 31 and the rear locking piece 32 are formed on a swinging body 33, and the swinging body 33 can swing around a horizontal shaft 34. A pair of cam followers 35 extend from the rocking body 33 in the left-right direction. The pair of cam followers 35 are urged by cam portions 46 of a pair of operation plates 45 to be described later, and the front locking piece 31 enters the nut passage 11 and the rear locking piece 32 is located outside the nut passage 11. Two modes, a standby mode and a nut supply mode in which the front locking piece 31 is located outside the nut passage 11 and the rear locking piece 32 enters the nut passage 11, can be selectively taken. Here, in the nut standby mode, as shown in FIG. 9A, the succeeding nut 300A following the waiting nut 300C, which will be described later, is prevented from sliding off by the front locking piece 31, and after the succeeding nut 300A. The rear locking piece 32 can enter the hole 300a of the subsequent nut 300B, and in the nut supply mode, as shown in FIG. 9B, the subsequent nut 300A slides below the front locking piece 31. At the same time, the rear locking piece 32 enters the hole 300a of the rear subsequent nut 300B, and the rear subsequent nut 300B (the nut that becomes the subsequent nut 300A at the next nut supply) is prevented from sliding down.

  A reciprocating body 4 is disposed above the rear end of the fixed chute 1. The reciprocating body 4 is driven by an air cylinder 42 fixed to a bracket 41 disposed on the fixed chute 1, and can reciprocate along the nut passage 11 of the fixed chute 1. A pair of laterally rotating rollers 44 as a pair of driven rollers are disposed at a predetermined interval on the pair of left and right side blocks 43 of the reciprocating body 4. The reciprocating body 4 is provided with a pair of left and right operation plates 45 extending rearward. A cam portion 46 that controls the operation of the selector 3 as the reciprocating body 4 moves is formed on the lower end surface of each operation plate 45.

  An extrusion rod 5 is disposed on the front surface of the reciprocating body 4. The push rod 5 is rotatable on a vertical surface around a horizontal axis 51 disposed on the front surface of the reciprocating body 4, and a tip portion 52 of the push rod 5 can be projected and retracted in the opening 12 of the fixed chute 1. . A pair of left and right longitudinal rotation rollers 53 are disposed in the longitudinal intermediate portion of the push rod 5. The vertical rotation roller 53 can roll on a vertical surface and is placed on the upper surface of the fixed chute 1. As shown by the solid line in FIG. 10, the push rod 5 connects the horizontal shaft 51 and the vertical rotation roller 53 when the vertical rotation roller 53 is at a position higher than the inclined surface portion 14 on the upper surface of the fixed chute 1. The inclination of the imaginary line 54A is relatively small, and the distal end portion 52 of the push rod 5 is located above the nut passage 11 and is not engaged with the nut 300. Further, as shown by a two-dot chain line in FIG. When the rotating roller 53 is positioned on the inclined surface portion 14, the inclination of the imaginary line 54B is increased, and the distal end portion 52 of the push rod 5 enters the nut passage 11 and can be engaged with the standby nut 300C. It becomes.

  A movable chute 6 is disposed below the fixed chute 1. The movable chute 6 has a pair of divided pieces 62 configured to be able to approach or abut and separate from each other in the horizontal direction with respect to the distal end portion 61. Alternatively, when in a contact state, the nut receiver serving as a component receiver that receives the standby nut 300C fed from the nut outlet 13 of the fixed chute 1 and can be transferred to the lower end 201 of the upper movable electrode 200. A portion 63 is formed. The movable chute 6 has a front wall portion for preventing the nut 300 from dropping off forward, and a vertical wall portion for preventing the nut 300 from falling off in the left-right direction. A cover is placed while allowing entry. The nut receiving part 63 is located directly below the upper movable electrode 200 on the axis of the upper movable electrode 200. Further, the distal end portion 61 of the movable chute 6 is configured to form a space 64 that allows the upper movable electrode 200 to descend when the pair of split pieces 62 are separated from each other.

  The movable chute 6 has a pair of operating lever portions 65 extending from the tip portion 61 to the rear and obliquely upward of the upper movable electrode 200. As shown in FIG. 7, each actuating lever portion 65 is formed in a “<” shape in a plan view or a front view, and a linear front side portion 65 b extends outward from the linear rear side portion 65 a. It is configured. A rotating shaft portion 66 fixed to the fixed chute 1 is disposed in the vicinity of the bent portion 65c between the front portion 65b and the rear portion 65a of each operating lever portion 65, and each operating lever portion 65 is connected to the rotating shaft portion 65. 66 can be swung horizontally around 66.

  Each operation lever portion 65 is pressed by the lateral rotation roller 44. As described above, the pair of laterally rotating rollers 44 are disposed on the reciprocating body 4 and are disposed at a predetermined interval in a direction orthogonal to the moving direction of the reciprocating body 4. The pair of lateral rotation rollers 44 roll while pressing the pair of operating lever portions 65 in accordance with the reciprocating motion of the reciprocating moving body 4.

  The movable chute 6 is held in a state indicated by a solid line in FIG. 7 when the pair of lateral rotation rollers 44 are in contact with the rear side portions 65a of the pair of operating lever portions 65, and the pair of split pieces 62 are separated from each other. Maintained. Thereafter, the reciprocating body 4 starts to move forward (forward movement), and the abutting state between the pair of lateral rotation rollers 44 and the rear side portion 65a of the pair of operating lever portions 65 as the pair of lateral rotation rollers 44 advances. When the pair of lateral rotation rollers 44 are released and come into contact with the front side portions 65b of the pair of actuating lever portions 65, the movable chute 6 transitions to a state indicated by a two-dot chain line in FIG. Transition from the separated state to the approaching or contacting state. Thereafter, the reciprocating body 4 starts retreating (returning), and the contact state between the pair of lateral rotation rollers 44 and the front portion 65b of the pair of operating lever portions 65 is released as the pair of lateral rotation rollers 44 retracts. When the pair of lateral rotation rollers 44 come into contact with the rear portions 65a of the pair of operating lever portions 65, the movable chute 6 transitions (returns) to the state shown by the solid line in FIG. 62 shifts from the approaching or contacting state to the separated state. The fixed chute 1 is provided with state holding means such as a stopper 15 for holding the state of the movable chute 6 shown by the solid line and the two-dot chain line in FIG.

  In front of the nut outlet 13 of the fixed chute 1, a gate 7 is disposed for allowing the nut 300 to stand by at the nut outlet 13 and releasing the standby nut 300 from the rear nut outlet 13. As shown in FIG. 8C, the gate 7 opens and blocks the front of the nut outlet 13. A swing lever 71 extends along the lower surface of the fixed chute 1 at the lower end of the gate 7. The swing lever 71 is disposed between the pair of actuating lever portions 65 of the movable chute 6 and can swing on the vertical plane around the horizontal shaft 72 held by the fixed chute 1. Between the upper surface of the rear end portion of the swing lever 71 and the lower surface of the fixed chute 1, a spring member that constantly applies a pressing force in a direction to keep the gate 7 in the cutoff state to the rear end portion of the swing lever 71. 73 is disposed. A pressing pressure receiving portion 74 is provided at the upper end of the front portion of the swing lever 71. The pressing pressure receiving portion 74 can be engaged and disengaged with a pressing biasing portion 75 formed on the pair of operating lever portions 65 of the movable chute 6. When the pair of split pieces 62 of the movable chute 6 are separated from each other and the distal end portion 61 of the movable chute 6 forms a space 64, as shown by the solid line in FIG. The urging portions 75 are not engaged with each other, and the swing lever 71 receives the urging force of the spring member 73 as shown by a solid line in FIG. The standby nut 300C in the fixed chute 1 is kept in the standby state. Thereafter, when the tip portion 61 of the movable chute 6 forms the nut receiving portion 63 as the reciprocating body 4 moves forward, the pressure receiving pressure of the swing lever 71 is received as shown by a two-dot chain line in FIG. The portion 74 is engaged with the pressing biasing portion 75, and the pressing pressure receiving portion 74 moves downward against the biasing force of the spring member 73 as shown by a two-dot chain line in FIG. Opens the nut outlet 13 of the fixed chute 1. Therefore, the standby nut 300 </ b> C waiting at the nut outlet 13 can move to the nut receiving portion 63 of the movable chute 6.

  Next, an operation example of the nut supply device 100 configured as described above will be described.

(1) When the reciprocating body 4 is in the retracted position (FIGS. 1 and 2)
When the reciprocating body 4 is in the retracted position, the pair of lateral rotation rollers 44 press the corresponding rear portion 65a of the operating lever portion 65, and the pair of split pieces 62 of the movable chute 6 are separated from each other. The tip 61 of the movable chute 6 forms a space 64 that allows the upper movable electrode 200 to descend.

  Since the pair of split pieces 62 are separated from each other, the pressing pressure receiving portion 74 of the swing lever 71 is not engaged with the pressing biasing portion 75 of the pair of operating lever portions 65. The moving lever 71 receives the biasing force of the spring member 73, holds the gate 7 in the raised position, the nut outlet 13 of the fixed chute 1 is held in a shut-off state, and the standby nut 300C is in a standby state at the nut outlet 13. .

  Further, the vertical rotation roller 53 is at a position higher than the inclined surface portion 14 of the fixed chute 1, and the distal end portion 52 of the push rod 5 is positioned outside the nut passage 11 of the fixed chute 1.

  Further, in the selector 3, the pair of cam followers 35 are urged by the cam portion 46 of the operation plate 45, the front locking piece 31 is located outside the nut passage 11, and the rear locking piece 32 is the subsequent nut in the nut passage 11. It penetrates into the hole of 300A, and this subsequent nut 300A is in a standby state.

(2) Advance of reciprocating body 4 (FIGS. 3 and 4)
When the reciprocating body 4 is started to move forward by the air cylinder 42, the pair of lateral rotation rollers 44 separates from the corresponding rear portion 65a of the actuating lever portion 65 and presses the front portion 65b. The split pieces 62 shift to a state of approaching or abutting each other, and a nut receiving portion 63 is formed at the distal end portion 61 of the movable chute 6.

  Further, when the pair of split pieces 62 shift from a state where they are separated from each other to a state where they are approaching or abutting, the pressing pressure receiving portion 74 of the swing lever 71 is engaged with the pressing biasing portion 75 of the pair of operating lever portions 65. Since the pressure receiving portion 74 is lowered, the gate 7 is lowered, the nut outlet 13 of the fixed chute 1 is shifted to the open state, and the waiting nut 300C that has been waiting until then is directed toward the nut receiving portion 63. Can be sent.

  Further, the vertical rotation roller 53 rolls down the inclined surface portion 14 from a position higher than the inclined surface portion 14 of the fixed chute 1, and the distal end portion 52 of the push rod 5 enters the nut passage 11 of the fixed chute 1. Then, the standby nut 300C is approached.

  Further, the pair of cam followers 35 are rotated clockwise by the cam portion 46 of the operation plate 45, the front locking piece 31 enters the nut passage 11, and the rear locking piece 32 is the subsequent nut 300 </ b> A in the nut passage 11. It comes out of the hole 300a. For this reason, the succeeding nut 300A that has been held by the rear locking piece 32 until then slides down by its own weight and is stopped by the front locking piece 31 and enters a standby state.

(3) Forward stop of the reciprocating body 4 (FIGS. 5 and 6)
When the reciprocating body 4 further advances from the position shown in FIGS. 3 and 4, the tip 52 of the push rod 5 pushes the standby nut 300 </ b> C from the rear, and the nut 300 is moved to the movable chute 6 at the advanced position of the reciprocating body 4. The nut receiving portion 63 of the distal end portion 61 is restrained. The forward movement of the reciprocating body 4 is stopped when a detection signal is output from the forward end confirmation sensor 81.

(4) Transfer of the nut 300 to the upper movable electrode 200 With respect to the nut 300 restrained by the nut receiving portion 63 of the tip portion 61 of the movable chute 6, the guide shaft 202 of the upper movable electrode 200 is lowered (advanced) from directly above. The guide shaft 202 is inserted into the hole of the nut 300, and the nut 300 is elastically held by the elastic force of the guide shaft 202.

(5) Retraction of the reciprocating body 4 When the reciprocating body 4 is started to retreat by the air cylinder 42, the pair of lateral rotation rollers 44 separate from the front part 65b of the corresponding operating lever part 65 and press the rear part 65a. As a result, the pair of split pieces 62 of the movable chute 6 shift to a state of being separated from each other, and a space 64 is formed at the distal end portion 61 of the movable chute 6.

  Further, when the pair of split pieces 62 shifts from a state in which they approach or contact each other to a state in which they are separated from each other, the pressing pressure receiving portion 74 of the swing lever 71 and the pressing biasing portion 75 of the pair of operating lever portions 65 are engaged. Since the combined state is released and the pressure-receiving part 74 is raised, the gate 7 is raised, and the nut outlet 13 of the fixed chute 1 is shifted to the cut-off state.

  Further, the vertical rotation roller 53 rolls up the inclined surface portion 14 of the fixed chute 1 and reaches a higher position behind the inclined surface portion 14, and the distal end portion 52 of the push rod 5 is connected to the nut passage 11 of the fixed chute 1. Get out.

  Further, the pair of cam followers 35 are rotated counterclockwise by the cam portion 46 of the operation plate 45, and the front locking piece 31 comes out of the nut passage 11, so that it was held by the front locking piece 31 until then. The succeeding nut 300A slides down by its own weight and stops at the gate 7, and enters a standby state (standby nut 300C). Further, by the counterclockwise rotation of the cam follower 35, the rear locking piece 32 enters the nut passage 11, enters the hole 300a of the rear subsequent nut 300B following the subsequent nut 300A, and then the subsequent nut. 300B is held as a subsequent nut 300A at the next nut supply.

  The reciprocation of the reciprocating body 4 is stopped when a detection signal is output from the retreat end confirmation sensor 82.

(6) Lowering and welding of upper movable electrode 200 The upper movable electrode 200 is lowered, and the nut 300 elastically held by the guide shaft 202 is spot welded to a workpiece (not shown). The upper movable electrode 200 is lowered without interfering with the distal end portion 61 of the movable chute 6 because the space 64 is formed at the distal end portion 61 of the movable chute 6. When the upper movable electrode 200 is lowered, when the position sensor (not shown) detects that the upper movable electrode 200 has been lowered to a predetermined position, the guide shaft 202 is raised (retracted), and the guide shaft 202 is moved. Do not disturb the welding operation.

(7) Raise of upper movable electrode 200 After the spot welding is completed, the upper movable electrode 200 is raised. As the upper movable electrode 200 rises, a workpiece is set on the lower fixed electrode (not shown) corresponding to the next spot welding.

(8) Advance of reciprocating body 4 When the position sensor (not shown) detects that the upper movable electrode 200 has reached the ascending position (corresponding to the state shown in FIG. 1), the air cylinder 42 is moved. Actuate to move the reciprocating body 4 forward again. Thereafter, the operations (2) to (7) are repeated.

  In addition, a nut amount confirmation sensor (not shown) for confirming the amount of the nut 300 supplied in the nut passage 11 of the fixed chute 1 is provided, and while the nut supply as described above is performed, Each time it is detected by the nut amount confirmation sensor that the amount of the nut 300 in the fixed chute 1 is less than a predetermined amount, one or more nuts 300 are supplied from the nut feeder into the fixed chute 1. .

  As described above, the nut supply device (small component supply device) 100 of the present embodiment is a nut supply device (small component supply device) that supplies the nut (small component component) 300 to the upper movable electrode 200 (working device). A movable chute 6 having a tip 61 positioned on the movement trajectory of the upper movable electrode 200 (movable part of the working device), and the tip 61 of the movable chute 6 is composed of a pair of divided pieces 62, The pieces 62 are configured to be able to approach or abut and separate from each other in the horizontal direction, and the tip portion 61 has a nut 300 fed from the upstream side when the pair of divided pieces 62 are in a state of approaching or abutting each other. When the nut receiving portion 63 (part receiving portion) that receives and receives the upper movable electrode 200 is formed and the pair of split pieces 62 are separated from each other, the upper movable electrode 2 When moving 0 configured to interfere with the upper movable electrode 200 and the pair of divided pieces 62 to form a space 64 does not occur.

  According to the nut supply device 100 of the present embodiment, the pair of split pieces 62 constituting the tip portion 61 of the movable chute 6 are separated in the horizontal direction so as to ensure a space 64 that allows the upper movable electrode 200 to descend. Therefore, the movement amount is small, and it is easy to ensure stable operation.

  Further, the nut supply device 100 extends the fixed chute 1 for feeding the nut 300 to the nut receiving portion 63 formed by the distal end portion 61 of the movable chute 6 obliquely upward from the distal end portion 61 of the movable chute 6. Compared to the case where the fixed chutes are provided in the direction orthogonal to the electrode axis, that is, in the lateral direction as described in the art, the work space is increased and the workability is improved.

  Further, the nut supply device 100 includes a gate 7 at the nut outlet (tip portion) 13 of the fixed chute 1, and the gate 7 is maintained in a cut-off state while the tip portion 61 of the movable chute 6 does not form the nut receiving portion 63. Then, the nut 300C waits in the fixed chute 1, and when the tip 61 of the movable chute 6 forms the nut receiving portion 63, the nut 300C transitions to an open state, and the waiting nut 300C can be moved to the nut receiving portion 63. Since it comprised so, it becomes possible to supply the nut 300 to the nut receiving part 63 continuously.

  Further, the nut supply device 100 is provided with the selector 3 in the fixed chute 1, and the selector 3 waits for the succeeding nut 300 </ b> A following the nut 300 </ b> C waiting when the nut 300 </ b> C is waiting in the fixed chute 1 by the gate 7. After that, the gate 7 shifts to the open state, the nut 300C in the fixed chute 1 moves to the nut receiving portion 63, and when the gate 7 shifts to the shut-off state, the subsequent nut 300A moves to the gate 7. Since the configuration is such that the succeeding nut (following accessory component) 300B following the succeeding nut 300A is made to stand by, the nut 300 can be further continuously supplied to the nut receiving portion 63.

  Further, the movable chute 6 has an operation lever portion 65 having a “<” shape in plan view and extending obliquely upward from each divided piece 62, and each operation lever portion 65 can swing around a bent portion 65 c. Therefore, the swinging movement of the pair of actuating lever portions 65 makes it possible to achieve the approach, contact, or separation of the pair of split pieces 62.

  The nut supply device 100 includes a reciprocating body 4 that reciprocates along the moving direction of the nut 300, and the movable chute 6, the gate 7, and the selector 3 operate in conjunction with one reciprocating movement of the reciprocating body 4. Therefore, the movable chute 6, the gate 7 and the selector 3 can be operated with only one air cylinder (drive source) 42 for driving the reciprocating body 4.

  The reciprocating body 4 is a pair of laterally rotating rollers (driven rollers) 44 disposed at a predetermined interval in a direction orthogonal to the moving direction of the reciprocating body 4, and a pair of operating levers of the movable chute 6. The pair of lateral rotation rollers 44 that press the portion 65 is provided, and the pair of lateral rotation rollers 44 approach or contact the pair of split pieces 62 of the movable chute 6 from the separated state when the reciprocating moving body 4 moves forward. When the reciprocating body 4 is moved backward, the pair of split pieces 62 of the movable chute 6 are moved from the approaching or contacting state to the separated state. The chute 6 can be activated.

  The reciprocating body 4 pushes the push-out rod 5 that pushes the waiting nut 300C in the fixed chute 1 that has become movable when the gate 7 changes to the open state during the forward movement toward the nut receiving portion 63 from the rear. Therefore, the nut 300 can be reliably moved to the nut receiving portion 63, and the nut 300 is stably held by the nut receiving portion 63.

  The gate 7 is provided at the front end of a swing lever 71 that swings on a vertical surface in conjunction with a pair of operating lever portions 65, and can be projected and lowered from below in front of the nut outlet (part outlet) 13 of the fixed chute 1. Configured. Further, as described above, the pair of operating lever portions 65 are operated by the reciprocating motion of the reciprocating moving body 4. For this reason, the gate 7 can be operated by the reciprocating motion of the reciprocating body 4.

  The selector 3 includes a front locking piece 31 and a rear locking piece 32. The front locking piece 31 restricts and allows the movement of the subsequent nut 300A, and the rear locking piece 32 allows the movement of the rear subsequent nut 300B. Regulate and allow. For this reason, it becomes possible to make a nut stand by continuously on the nut supply upstream side of the selector 3.

  Although the nut supply apparatus 100 of the said embodiment has taken the structure which supplies the nut 300 to the upper movable electrode 200, this invention is a nut supply apparatus which supplies a nut to an upper fixed electrode, or a nut to a lower fixed electrode. It is also applicable to a nut supply device that supplies nuts or a nut supply device that supplies nuts to the lower movable electrode. Further, when the nuts 300 are arranged in a row in the fixed chute 1 and the front and rear nuts cannot be entangled due to the shape of the nuts and cannot slide, the selector 3 is deleted and the nuts from the nut feeder to the gate 7 one by one. May be configured to be fed directly. Further, the nut supply device 100 may be reciprocated by a driving mechanism such as an air cylinder, and may be disposed so as to be able to move backward and obliquely upward from the upper movable electrode 200. When the nut supply device 100 can be retracted, the work space (work area) is increased and workability is further improved.

It is a schematic side view which has a partial cross section of the nut supply apparatus which concerns on one Embodiment of this invention, Comprising: It is a side view when a reciprocating body exists in a retreat position. It is the front view which looked at the nut supply apparatus shown in FIG. 1 from the direction orthogonal to the longitudinal direction. It is a schematic side view which has a partial cross section of the said nut supply apparatus when a reciprocating body is in the middle of advancing. It is the front view which looked at the nut supply apparatus shown in FIG. 3 from the direction orthogonal to the longitudinal direction. It is a schematic side view which has a partial cross section of the said nut supply apparatus when a reciprocating body exists in an advance position. It is the front view which looked at the nut supply apparatus shown in FIG. 5 from the direction orthogonal to the longitudinal direction. It is operation | movement explanatory drawing of a movable chute. It is operation | movement explanatory drawing of a gate, (A) is a side view, (B) is a front view, (C) is a front view. It is operation | movement explanatory drawing of a selector. It is operation | movement explanatory drawing of an extrusion rod.

Explanation of symbols

DESCRIPTION OF SYMBOLS 1 Fixed chute 3 Selector 4 Reciprocating body 5 Extrusion rod 6 Movable chute 7 Gate 13 Nut exit (component exit)
31 Front locking piece 32 Rear locking piece 44 Horizontally rotating roller (driven roller)
61 Tip 62 Split piece 63 Nut receiving part (part receiving part)
64 Space 65 Actuation lever portion 65c Bending portion 71 Swing lever 100 Nut supply device (small component supply device)
200 Upper movable electrode (working device, movable part)
201 Lower end 300 Nut (small parts)
300A Subsequent nut (subsequent accessory parts)
300B rear trailing nut (rear following small parts)
300C Nut waiting (small parts waiting)

Claims (4)

In the small parts supply device for supplying small parts to the work equipment,
A movable chute having a tip positioned on the movement locus of the movable part of the working device;
The tip of the movable chute is configured with a pair of divided pieces, and the pair of divided pieces are configured to be able to approach or abut and separate from each other in the horizontal direction,
The tip is
When the pair of divided pieces are in a state of approaching or abutting each other, forming a parts receiving part that receives small parts fed from the upstream side and enables transfer to the working device; and When the pair of divided pieces are separated from each other, the movable unit of the working device is configured to form a space in which interference between the movable unit and the pair of divided pieces does not occur when the movable unit moves .
A fixed chute for feeding small parts to the component receiving portion formed by the tip of the movable chute is extended obliquely upward from the tip of the movable chute,
A gate is disposed at the tip of the fixed chute,
The gate maintains a shut-off state while the distal end of the movable chute does not form the component receiving portion and waits for small parts in the fixed chute, and the distal end of the movable chute forms the component receiving portion. Then, it is configured to enable the movement to the parts receiving portion of the waiting small parts by transitioning to the open state,
The fixed chute is provided with a selector,
The selector makes the subsequent small parts that follow the small small parts waiting when the small parts are waiting in the fixed chute by the gate, and then the gate shifts to an open state and the fixed chute When the accessory part moves to the parts receiving part and the gate shifts to the shut-off state, the succeeding accessory part can be moved to the gate and the succeeding accessory part follows the succeeding accessory part. Is configured to wait,
The movable chute has an operation lever portion extending in an obliquely upward direction from each of the divided pieces, and each operation lever portion is configured to be swingable about a bent portion.
As a configuration in which a reciprocating body that reciprocates along the moving direction of the accessory part is disposed, and the movable chute, the gate, and the selector are operated in conjunction with one reciprocating movement of the reciprocating body,
The reciprocating body is a pair of driven rollers disposed at a predetermined interval in a direction orthogonal to the moving direction of the reciprocating body, and the outer side surfaces of the pair of operating lever portions of the movable chute A pair of driven rollers for pressing,
The pair of driven rollers cause the pair of divided pieces of the movable chute to transition from a separated state to an approaching or contacting state when the reciprocating body moves forward, and the reciprocating body moves backward. when, small parts feeder according to claim Rukoto moves it to the pair of divided pieces of the movable chute from approaching or contacting state to the separated state. The reciprocating body includes an extruding rod that pushes a waiting small component in the fixed chute that is movable by the gate being changed to an open state during forward movement from the rear toward the component receiving portion. The accessory component supply apparatus according to claim 1 . The gate is provided at a front end portion of a swing lever that swings on a vertical surface in conjunction with the pair of operating lever portions, and is configured to be able to appear and retract from below in front of a component outlet of the fixed chute. The accessory component supply apparatus according to claim 1 or 2 , wherein the accessory component supply apparatus is characterized in that The selector includes a front locking piece and a rear locking piece, the front locking piece restricts and allows movement of the subsequent small parts, and the rear locking piece restricts movement of the rear subsequent parts. The accessory component supply device according to any one of claims 1 to 3, wherein the accessory component supply device is allowed.

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