JP5819694B2 - Small parts supply equipment - Google Patents

Description

  The present invention relates to a small-part supply device for supplying small-sized components such as nuts and bolts stored in a bucket to a welding machine or the like through a supply chute.

  Conventionally, in a supply device such as a nut, a ball-shaped bucket is vibrated, and the nut stored in the bucket is moved up the spiral conveyance path of the cylindrical peripheral wall of the bucket. Only nuts in a predetermined posture in the arranged state are sorted by the sorting unit and conveyed to the supply chute side (see, for example, Patent Document 1). This selection part was comprised so that replacement | exchange was possible with respect to the curved-shaped surrounding wall of a bucket so that it could respond to the change of the dimension shape of a nut.

  In addition, in this type of conventional supply device, a rectangular parallelepiped bucket that stores a large number of small parts bolts, and a lift that can be moved up and down to push up small parts from the bottom wall side of the bucket to the upper end side of the bucket side wall. Some are configured to include a mechanism unit and a transport unit that is disposed on the upper end side of the side wall and that can transport the bolt pushed up by the lift mechanism unit to the supply chute side (for example, Patent Document 2). reference). This conveying unit is composed of a vibration feeder that vibrates and conveys the bolt, and among the bolts to be conveyed, a sorting unit that conveys the bolt in the proper posture to the supply chute and returns the bolt in the inappropriate posture into the bucket. Was disposed above the vibration feeder.

JP 2006-240791 A JP-A-11-59870

  However, in the conventional supply device described in Patent Document 1, the bucket for storing the nut as a small component is in the shape of a ball, and requires a diameter dimension, a width dimension, and a depth dimension. There was a problem in the point to install in. Also, even though the sorting part can be replaced so that it can cope with changes in the dimensional shape of the nut to be sorted, the conveyance path for conveying the nut is a curved shape corresponding to the curvature of the ball-shaped bucket, It cannot be solved that it takes time to design the sorting piece such as returning to the bucket side. Also, if the buckets have different diameter dimensions, even if a plurality of types of sorting sections are prepared, they cannot be attached and cannot be handled.

  Moreover, in the conventional supply apparatus described in Patent Document 2, the bucket has a rectangular parallelepiped shape, which is easy to place near the corner of the factory and can be installed in a space-saving manner, but the conveyance path is composed of a vibration feeder, and is quick. There was a problem in that the small parts were supplied to the supply chute.

  The present invention solves the above-mentioned problems, can be installed in a small space, can quickly supply small parts with appropriate postures, and can easily cope with changes in the size and shape of small parts to be selected. An object of the present invention is to provide a supply device for small parts.

<Explanation of Claim 1>
The accessory device supply device according to the present invention is configured to be able to supply an accessory component in an appropriate posture via a supply chute,
A bucket that stores a large number of small parts; a lift mechanism that pushes up the small parts from the bottom wall side of the bucket to the upper end side of the side wall of the bucket; and the lift mechanism part that is disposed on the upper end side of the side wall. A transport unit that can transport the small parts pushed up at the supply chute side,
The conveying unit is configured to include a sorting unit that conveys the small-sized component in an appropriate posture among the small-sized components to be conveyed to the supply chute side and returns the small-sized component in an inappropriate posture into the bucket. A device for supplying small parts,
The bucket has a substantially rectangular parallelepiped shape with a rectangular opening above,
The transport unit is provided with a belt conveyor disposed on the upper end side of the side wall to transport the accessory parts to the supply chute side,
The sorting section is detachably disposed above the upper surface side of the belt conveyor for conveying the small parts in a straight line, and
For the small parts that have been changed from the small parts, the sorting section to which the sorting section is attached transports the correct posture to the supply chute side, and returns the incorrect posture to the bucket. It is characterized by being able to attach another 2nd selection part.

  The supply device for small parts according to the present invention has a substantially rectangular parallelepiped shape in which the packet is opened in a rectangular shape, and the bucket is rectangular when viewed from above, and is arranged so that the corner of the bucket faces the corner side of the factory. If installed, the ball-shaped bucket can be installed so as to be fitted to the corner portion side as compared with the case where the ball-shaped bucket is arranged in the vicinity of the corner portion.

  In addition, since the sorting unit is arranged above the upper surface side for conveying the small parts of the belt conveyor in a straight line, the sorting part can be installed as a straight line instead of a curved line. Even if the size and shape of the second part are changed, the second part for returning the accessory part in the inappropriate posture to the bucket side or passing the accessory part in the appropriate posture to the supply chute side in accordance with the outer shape of the accessory part. The shape of the sorting piece of the sorting section can be designed by developing it in a straight line along the conveying direction of the belt conveyor. Compared to the curved sorting section of the conventional ball-shaped nut feeder, the skilled person If not, it can be easily dealt with and designed.

  And at the time of attachment, it is only necessary to attach the sorting part above the linear part of the belt conveyor by using the attachment part, and it is possible to easily replace and arrange the corresponding sorting part on the transport part. it can.

  Furthermore, if the size of the rectangular parallelepiped bucket is changed as long as the sorting portion is linear and the length of the straight line transported by the belt conveyor is sufficient to install the sorting portion using the attachment site, Without any hindrance, the sorting part corresponding to the changed small part can be attached to the attachment part and used.

  Furthermore, what conveys small parts in a conveyance part is not a vibration feeder but a belt conveyor, and can convey a small part rapidly to the supply chute side. And since the small parts can be quickly conveyed to the supply chute side, there is no need to always operate the supply device, and the supply device can be operated only when a predetermined number of small parts are required at the supply destination. It is possible to reduce the generation time of the operating sound and suppress the generation of noise.

  Therefore, in the accessory parts supply apparatus according to the present invention, it can be installed in a small space, and can quickly supply the accessory parts in an appropriate posture, and can easily cope with changes in the size and shape of the accessory parts to be selected. be able to.

<Explanation of Claim 2>
In the accessory component supply device according to the present invention, the selecting portion can adjust the attachment position of the belt conveyor along a direction orthogonal to a conveying direction of the belt conveyor for conveying the accessory components, It is desirable to be configured to be attached to the.

  In such a configuration, if the small parts to be sorted are simply a change in size of a substantially similar dimension, the mounting position of the sorting unit can be easily changed along the direction orthogonal to the conveying direction of the belt conveyor. It can be dealt with very easily by just making an adjustment.

  Furthermore, in this case, it is further preferable that at least a part of the sorting pieces of the sorting unit is configured so that the mounting position of the sorting unit can be adjusted along a direction orthogonal to the conveying direction of the belt conveyor.

<Explanation of Claim 3>
In the accessory component supply device according to the present invention, the lift mechanism section includes:
A plurality of shelves in which the receiving surfaces of the small articles that are inclined so as to lower the height of the upper surface and lower the conveying unit side are disposed on the upper surface, and the plurality of shelves are held And a plurality of drive mechanisms that move up and down,
The drive mechanism is configured such that the shelf held by the other drive mechanism is arranged between the plurality of held shelf parts, and the shelf part held when the adjacent shelf part is lowered. It is desirable that the small parts on the receiving surface of the shelf thus raised are slid and transferred onto the receiving surface of the adjacent shelf.

  In such a configuration, when raising the shelf on the lower side when descending and transferring the accessory parts on the receiving surface of the shelf to the adjacent shelf, the shelf on the adjacent side is lowered, The small parts of the raised shelf are transferred to the lowered shelf. In other words, when transferring small parts between the shelf parts, the shelf part on the side to be transferred is lowered to receive the small part parts, and a stroke for raising and lowering the shelf parts of the drive mechanisms one by one is performed. Small parts can be transferred from the bottom wall side of the bucket to the belt conveyor.

  That is, in such a configuration, the push-up stroke of the drive mechanism can be reduced, the height dimension of the drive mechanism can be reduced, and the vertical dimension of the supply device can be made compact.

  Incidentally, in a conventional supply device that raises and lowers a plurality of shelves with different heights (for example, the supply device described in Patent Document 2), a fixed shelf is arranged between the shelves that are raised and lowered. Therefore, it is necessary to raise the shelf part to be raised and lowered to the shelf part, and since the shelf part on the side to be transferred is not lowered as in the above configuration, in the conventional device, the pushing stroke of the drive mechanism is Compared to the configuration, the required amount is twice as much.

  Therefore, in the configuration as described above, the bucket is rectangular in plan view, and in combination with the fact that the supply device can be installed in a space-saving manner, the height dimension can also be made compact, and the supply device is installed as a further space-saving. be able to.

It is a top view of the supply apparatus of embodiment of this invention. It is a top view in the state where the sorting attachment as a sorting part was removed from the supply device of an embodiment. It is a right view of the supply apparatus of embodiment. It is a front view of the supply apparatus of an embodiment. It is a top view of the sorting attachment of an embodiment. It is a left view of the sorting attachment of an embodiment. It is a bottom view of the sorting attachment of an embodiment. It is the top view and left view explaining the sorting state of the nut in the 1st sorting means in the sorting part of an embodiment. It is the top view and sectional view explaining the selection state of the nut of the proper posture in the 2nd sorting means in the sorting part of an embodiment. It is the top view and sectional view explaining the selection state of the nut of the improper posture in the 2nd sorting means in the sorting part of an embodiment. It is the top view and sectional view explaining the selection state of the nut in the 3rd sorting means in the sorting part of an embodiment. It is a schematic sectional drawing explaining the action | operation of the lift mechanism part of embodiment. It is a schematic sectional drawing explaining the action | operation of the lift mechanism part of embodiment, and shows the state after FIG. It is a schematic sectional drawing explaining the action | operation of the lift mechanism part of embodiment, and shows the state after FIG. It is a schematic sectional drawing explaining the action | operation of the lift mechanism part of embodiment, and shows the state after FIG. It is a schematic sectional drawing explaining the action | operation of the lift mechanism part of embodiment, and shows the state after FIG. It is the perspective view which shows the changed accessory component and shows the nut with a flange by which the shape change was carried out. It is the elements on larger scale of a supply device in the state where the sorting attachment which sorts a nut with a flange was attached. It is a left view of the selection attachment shown in FIG. It is the top view and left view explaining the selection state of the nut with a flange in the 1st selection means at the time of using the selection attachment shown in FIG. It is the top view and sectional drawing explaining the selection state of the nut with a flange of the suitable posture in the 2nd selection means at the time of using the selection attachment shown in FIG. It is the top view and sectional drawing explaining the selection state of the nut with a flange of the improper posture in the 2nd selection means at the time of using the selection attachment shown in FIG. It is the top view and sectional drawing explaining the selection state of the nut with a flange in the 3rd selection means at the time of using the selection attachment shown in FIG. It is a top view of the supply apparatus of embodiment explaining the state which adjusted the selection attachment so that it might correspond to the nut from which the dimension was changed.

  DESCRIPTION OF EMBODIMENTS Hereinafter, an embodiment of the present invention will be described with reference to the drawings. A supply device 1 according to the embodiment shown in FIGS. 1 to 4 supplies a nut N1 (see an enlarged perspective view of FIG. 1) as a small part. In the case of the embodiment, the nut N1 is welded to a predetermined workpiece by a welding machine (not shown), and the supply device 1 of the embodiment transfers the nut to the chuck that holds the nut N1 of the welding machine. A nut N1 is supplied to a delivery device that delivers N1 one by one by air pressure. In addition, although a predetermined number of nuts N1 are aligned and stored in this delivery device, when the number decreases, the supply device 1 of the embodiment is actuated so that the nut N1 in a proper posture is predetermined. Supply a few.

  As shown in FIGS. 1 and 8 to 11, the nut N <b> 1 is a square nut, and welding projections P are provided in the vicinity of the four corners on the one end face Td side of the quadrangular columnar body B <b> 1. And when supplying to the above-mentioned delivery apparatus, the supply apparatus 1 supplies nut N1 with the attitude | position which has arrange | positioned the protrusion P for welding on the upper surface side.

  1 to 4 and 12, the supply device 1 of the embodiment includes a bucket 10 that stores a large number of nuts N <b> 1, and nuts N <b> 1 from the bottom wall 11 side of the bucket 10 to the upper end side of the side wall 15 of the bucket 10. The lift mechanism unit 20 is configured to be pushed up, and the transport unit 50 is disposed on the upper end side of the side wall 15 and transports the nut N1 pushed up by the lift mechanism unit 20 to the supply chute 90 side. Among the nuts N1 to be transported, the transport unit 50 transports the nut N1 in which the welding projections P are arranged on the upper surface side in an appropriate posture to the supply chute 90 side, and the nut N1 in an inappropriate posture in other postures. A sorting unit 60 is provided for returning the water into the bucket 10.

  The bucket 10 and the transport unit 50 are supported by the support frame 2. The support frame 2 is configured such that a substantially rectangular plate-like bottom plate portion 3 and a support plate portion 4 are connected to each other by leg portions 5 at the four corners and arranged vertically. Then, predetermined support plates 6, 7, and 8 are erected on the support plate portion 4 to hold the bucket 10.

  As shown in FIGS. 1, 2, and 12, the bucket 10 has a substantially rectangular parallelepiped shape having a rectangular opening 10 a on the upper side, a bottom wall 11 inclined to the center side, and a square extending upward at the outer peripheral edge of the bottom wall 11. And a cylindrical side wall 15. The bottom wall 11 includes a front side inclined part 11a, a side side inclined part 11c, and a return side inclined part 11d, and is configured such that a part where the mutual gathers is the lowest, and the insertion hole 13 extending from that part to the conveying part 50 side. In addition, a plurality of shelves 27, 28, 37, 38 in the lift mechanism unit 20 are arranged.

  In addition, the shelf 27 is disposed at the lowest position of the bottom wall 11, and the highest shelf 38 is disposed adjacent to the push-up portion 16 on the side of the conveyance unit 50 on the side wall 15. From the inner side to the upper end side of the push-up portion 16, there is a guide plate 18 whose upper surface 18 a is inclined so that the nut N <b> 1 transferred from the shelf 38 that is pushed up highest is transferred onto the belt conveyor 51 of the transfer unit 50. It is arranged.

  Further, a through-hole 11b for raising and lowering the stirring plate 45 is formed in the front inclined portion 11a so that the nut N1 in the bucket 10 is not hardened in a bridge shape. As shown in FIG. 3, the stirring plate 45 is moved up and down by an air cylinder 46 fixed to the lower surface of the support plate portion 4, and the air cylinder 46 has a piston rod 47 disposed so as to extend downward. A connecting plate 48 extending in the front-rear direction is fixed to the lower end of the piston rod 47, and connecting rods 49, 49 connected to and supported by the stirring plate 45 are connected to the connecting plate 48. The stirring plate 45 moves up and down with the rod 47, the connecting plate 48, and the connecting rod 49 interposed.

  Further, the rectangular cylindrical side wall 15 is configured with the conveying unit 50 side as the push-up portion 16, and in the case of the embodiment, the push-up portion 16 is configured by the support plate 6 itself. And the attachment seat 6a as an attachment part which attaches the attachment part 63 of the selection attachment 61 which comprises the selection part 60 removably by the volt | bolt 6b etc. is formed in the front and back edges of the push-up side part 16. .

  As shown in FIGS. 1, 3, 4, and 12 to 16, the lift mechanism unit 20 includes a plurality of shelves 27, 28, 37, 38 having different top surface heights, and shelves 27, 28, 37, And a plurality of drive mechanisms 21 and 31 that move up and down while holding 38. The upper surfaces of the shelves 27, 28, 37, and 38 are receiving surfaces 27a, 28a, 37a, and 38a that can receive the nut N1. These receiving surfaces 27a, 28a, 37a, and 38a are inclined so as to lower the conveying unit 50 side, and the inclination is determined when the receiving surfaces 27a, 28a, 37a, and 38a are adjacent to each other. On the surface on the right side which is the 50 side, the nut N1 is slid by gravity so as to be able to be transferred.

  In the case of the embodiment, two drive mechanisms 21 and 31 are used as the first drive mechanism 21 and the second drive mechanism 31, and each of the two shelves, that is, the first drive mechanism 21 is the first drive mechanism 21. The first inner shelf 27 and the first outer shelf 28 are held and moved up and down, and the second drive mechanism 31 holds and moves the second inner shelf 37 and the second outer shelf 38 up and down. It is configured as follows.

  As shown in FIGS. 3, 4, and 12, the first drive mechanism 21 and the second drive mechanism 31 are air cylinders 22 and 32 as drive sources fixed to the bottom plate portion 3, and air cylinders 22 and 32, respectively. And base plates 24 and 34 connected to the piston rods 23 and 33. The base plate 24 is provided with two first inner rods 25 and 25 and first outer rods 26 and 26 respectively connected to the first inner shelf 27 and the first outer shelf 28. Two second inner rods 35 and 35 and second outer rods 36 and 36 respectively connected to the second inner shelf portion 37 and the second outer shelf portion 38 are attached to the base plate 34.

  The first inner shelf 27, the first outer shelf 28, the second inner shelf 37, and the second outer shelf 38 are arranged from the center side of the bottom wall 11 of the bucket 10 to the first inner shelf 27. The second inner shelf 37, the first outer shelf 28, and the second outer shelf 38 are arranged in this order. That is, the second inner shelf portion 37 is disposed between the first inner shelf portion 27 and the first outer shelf portion 28 that are moved up and down by the first drive mechanism 21, and the second drive mechanism 31 moves up and down. 2 A first outer shelf portion 28 is disposed between the inner shelf portion 37 and the second outer shelf portion 38, and the second outer shelf portion 38 is provided on the push-up portion 16 of the bucket 10. It is comprised so that it may adjoin.

  In the first drive mechanism 21, the first inner shelf 27 is disposed at the lowest position of the bottom wall 11 of the bucket 10 as shown in FIGS. 12, 14, and 16 when lowered, and FIGS. As shown, the nut N1 placed on the receiving surface 27a is raised to a position where it can be transferred onto the receiving surface 37a of the second inner shelf 37 that has been lowered. Moreover, in the 1st drive mechanism 21, when the 1st outer side shelf part 28 descend | falls, the 2nd inner side shelf of the 2nd drive mechanism 31 which raised the receiving surface 28a as shown in FIG. The nut N1 is lowered from the receiving surface 37a of the portion 37 to a height at which the nut N1 can be transferred. When the nut N1 is raised, the receiving surface 28a is lowered and the nut N1 on the receiving surface 28a is lowered as shown in FIGS. It is comprised so that it may raise to the height which can be transferred on the receiving surface 38a of the completed 2nd outer side shelf part 38. FIG.

  Moreover, in the 2nd drive mechanism 31, when the 2nd inner side shelf part 37 descend | falls, as shown in FIG.13, 15, the receiving surface 37a raised the 1st inner side shelf part 27 of the 1st drive mechanism 21. As shown in FIG. The nut N1 is lowered from the receiving surface 27a to a height at which the nut N1 can be transferred. When the nut N1 is raised, the receiving surface 37a is lowered and the nut N1 on the receiving surface 37a is lowered as shown in FIGS. It is comprised so that it may raise to the height which can be transferred on the receiving surface 28a of the completed 1st outer side shelf part 28. FIG. Further, in the second drive mechanism 31, when the second outer shelf portion 38 is lowered, as shown in FIGS. 13 and 15, the receiving surface 38 a is raised to the first outer shelf portion 28 of the first drive mechanism 21. The nut N1 is lowered from the receiving surface 28a to a height at which the nut N1 can be transferred. When the nut N1 is raised, the receiving surface 38a is guided to the nut N1 on the receiving surface 38a as shown in FIGS. It is comprised so that it may raise to the height which can be transferred to the plate 18. FIG.

  The first inner rod 25, the first outer rod 26, the second inner rod 35, and the second outer rod 36 are respectively inserted into the guide holes 41 of the guide block 40 disposed below the support plate portion 4. The movement is guided. The guide block 40 is held by a support rod 39 that extends upward from the four corners and is fixed to the support plate portion 4.

  Further, the stirring plate 45 is configured to move up and down in synchronization with the first inner shelf 27 and the first outer shelf 28 of the first drive mechanism 21.

  1-3, the conveyance part 50 is arrange | positioned adjacent to the right side of the upper end side of the push-up side part 16 of the side wall 15, and is provided with the belt conveyor 51 which conveys the nut N1 to the supply chute 90 side. Has been. As shown in FIG. 3, the belt conveyor 51 is driven to circulate and rotate by a drive roller 55 wound around driven rollers 53 and 53 and tension rollers 54 and 54 fixed to the support plate 6 and connected to a drive motor 56. Is done. And the belt conveyor 51 conveys nut N1 by making the linear upper surface in the upper end side of the push-up side part 16 into the conveyance path 52. FIG. As shown in FIG. 2, the conveyance path 52 has an inclined upper surface 18 a of the guide plate 18 disposed upward, but the upper surface 52 a is formed on the push-up portion 16 of the bucket 10 as shown in FIGS. 9 and 10. The upper end surface 16a is higher than the upper end surface 16a, and the edge 52b is slid on the outer surface 16b of the push-up portion 16. In the case of the embodiment, the edge 52b is configured with a step so as to be lowered from the center side of the upper surface 52a.

  The lift mechanism unit 20 is adjacent to the rear end side of the conveyance path 52 and is shorter than the conveyance path 52 as a length dimension of about 1/3 of the length dimension of the conveyance path 52 in the front-rear direction. It is configured.

  As shown in FIGS. 1 to 4, the sorting unit 60 is configured by disposing a removable sorting attachment 61 above the linear conveyance path 52 of the belt conveyor 51. The sorting attachment 61 includes a long and flat mounting substrate portion 62 extending in the front-rear direction, and mounting portions 63 disposed at both front and rear ends of the mounting substrate portion 62. The attachment portions 63 and 63 are attached to the attachment substrate portion 62 by screwing bolts 63b to the attachment substrate portion 62 through the attachment holes 63a. The sorting attachment 61 is fixed to the support plate 6 by fixing the mounting portion 63 to the mounting seats 6 a on the front and rear sides of the support plate 6, and is disposed above the conveyance path 52. As shown in FIG. 6, screw holes 63c for screwing bolts 6b are provided in the front and rear attachment parts 63, respectively.

  The attachment portion 63 is opened so that the attachment hole 63a through which the bolt 63b is inserted extends in the left-right direction. When the bolt 63b is fixed to the attachment portion 63 of the attachment substrate portion 62, the attachment portion 63 is attached to the attachment portion 63. The board portion 62 is configured so that it can be attached by adjusting the arrangement position in the left-right direction. Incidentally, by this position adjustment, the arrangement position of the sorting section 60 (sorting attachment 61) along the distance from the push-up section 16 such as a guide wall section 65 described later, in other words, in the direction orthogonal to the conveying direction with respect to the belt conveyor 51. , Can be adjusted.

  As shown in FIGS. 5 to 7, a guide wall portion 65 that extends downward and extends in a belt shape in the front-rear direction is formed on the lower surface side of the mounting substrate portion 62. The guide wall portion 65 is a first guide surface 65a (66a, 67a, 68a, 69a) that slides the nut N1 on the surface on the bucket 10 side and extends substantially linearly forward along the conveyance path 52 on the rear side. A straight portion 66, a projecting portion 67 that curves and projects from the first straight portion 66 toward the bucket 10 side, and a first portion extending in a substantially straight line in the vicinity of the front end of the projecting portion 67 in parallel with the transport path 52. Two straight portions 68 and a bent portion 69 that curves outward from the vicinity of the front end of the second straight portion 68 are provided. As shown in FIGS. 8 to 11, the lower end 65 b of the guide wall portion 65 does not hit the conveyance path 52 when the attachment substrate portion 62 is attached to the support plate 6 using the attachment portion 63. 52, a gap 71 smaller than the thickness dimension TB1 (see B in FIG. 9) of the main body B1 of the nut N1 is formed. In the embodiment, the guide wall 65 has a height higher than the width LN0 of the nut N1 (see B in FIG. 8).

  And in the site | part of the 1st linear part 66, as shown in FIG. 1, it is comprised so that separation distance SL1 part may be opened between the upper end surfaces 16a of the push-up side part 16. As shown in FIG. The separation distance SL1 is set so that at least one entire surface of the end surfaces Tu and Td of the nut N1 can be brought into contact with the transport path 52 between the leading edge 18b of the guide plate 18 and the guide surface 66a. ing. Further, the first straight portion 66 is disposed so as to extend forward from the lift mechanism portion 20. The separation distance SL1 is set so that the entire surface of the nut N1 on the end surfaces Tu and Td does not contact the upper surface 52a if the belt conveyor 51 can carry the nut N1 on the upper surface 52a and transport it forward. Also good.

  As shown in FIGS. 1 and 8, the overhanging portion 67 gently protrudes in a curved line obliquely forward from the vicinity of the front end of the first linear portion 66 so as to approach the bucket 10, and the guide surface 67 a is a second straight line. It is arranged so as to be gently connected to the guide surface 68a of the portion 68. An inverted removal sorting piece 73 as a first sorting means is fixed near the rear end of the overhanging portion 67.

  As shown in FIG. 8, the inverted removal selecting piece 73 has a gap 74 slightly larger than the entire thickness dimension TN1 of the nut N1 and smaller than the width dimension LN0 so as to be opened between the conveyance path 52. Further, it is disposed in the vicinity of the middle in the front-rear direction of the transport path 52 and is formed in an arc surface shape that is inclined obliquely forward from the overhanging portion 67 so that the front end 73a enters the bucket 10. The inverted removal selection piece 73 has a vertical length of about the width LN0 of the nut N1, and the nut N1 conveyed on the conveyance path 52 contacts the end surfaces Td and Tu with the upper surface 52a of the conveyance path 52. If the side surface SM side is conveyed in an inverted state where the side surface SM is in contact with the upper surface 52a, the nut N1 in the inappropriate posture is slid on the guide surface 73b on the bucket 10 side, It is to drop and return. The nut N1 having the end faces Td and Tu in contact with the upper surface 52a of the transport path 52 passes through the gap 74 and is transported to the second linear portion 68 side.

  As shown in FIGS. 1, 9, and 10, the second straight portion 68 is gently and continuously disposed on the front side of the overhanging portion 67 extending from the vicinity of the front end of the first straight portion 66, and guides the second straight portion 68. A separation distance SL2 is provided between the surface 68a and the upper end surface 16a of the push-up portion 16. This separation distance SL2 is substantially equal to the overall width dimension LN0 of the nut N1. The separation distance SLS between the guide surface 68a and the edge 52b of the conveyance path 52 (specifically, the step of the edge 52b) is made substantially equal to the width dimension LN1 excluding the dimension of the welding projection P for one side of the nut N1. ing.

  A front / back sorting piece 76 as a second sorting means is disposed at an intermediate portion in the front-rear direction of the second linear portion 68. The front / back sorting piece 76 has an L-shaped cross section, and a vertical plate portion 79 extending downward from a bent portion 78 at the tip of the mounting portion 77 is formed by fixing the upper mounting portion 77 to the mounting substrate portion 62 with a bolt 77b. The two straight portions 68 and the push-up portion 16 are disposed. The lower end 79a of the vertical plate 79 has a gap 80 between the upper surface 52a of the conveyance path 52 slightly larger than the thickness dimension TB1 of the main body B1 of the nut N1 and includes the welding projection P of the nut N1. It is set smaller than the overall thickness dimension TN1. Further, the lower end 79 a of the vertical plate portion 79 has a tapered triangular cross section along the width direction of the vertical plate portion 79, and its ridge line is along the conveyance direction of the conveyance path 52. The lower end 79a of the nut N1 is transported while the end surfaces Td and Tu are disposed on the upper surface 52a of the transport path 52 and the side SM is slid on the guide surface 68a of the second linear portion 68. The center of gravity G is disposed slightly on the guide surface 68a side.

  This front / back sorting piece 76 has a problem when the nut N1 in an appropriate posture with the welding projections P arranged on the upper surface side is conveyed on the conveyance path 52 while sliding the side surface SM side on the guide surface 68a. (See FIG. 9). However, when the nut N1 in an inappropriate posture with the welding projection P arranged on the lower surface side is conveyed on the conveyance path 52 while sliding the side surface SM side to the guide surface 68a, it is shown in FIG. In this way, the lower end 79a is caught on the side surface SM.

  At this time, the nut N1 in the improper posture has the welding projection P arranged on the lower surface side, and the separation distance SLS between the guide surface 68a of the second straight portion 68 and the edge 52b of the conveying path 52 of the belt conveyor 51. Is set to be substantially equal to the width dimension LN1 excluding the welding projection P for one side of the nut N1, and the nut N1 in an inappropriate posture conveyed by the conveyance path 52 has the welding projection P in the groove of the edge 52b. It is easy to incline so that it falls to the bucket 10 side, and it is conveyed.

  Therefore, the nut N1 in an improper posture in which the side surface SM is locked to the front / back sorting piece 76 has a center of gravity G located on the bucket 10 side from the lower end 76a, and further easily inclined so as to fall to the bucket 10 side. By forward movement of the conveyance path 52, as shown by the two-dot chain line in FIG. 10A, when viewed from above, it rotates in the clockwise direction or the like, and disengages from the upper end surface 16a of the conveyance path 52 or the push-up portion 16. It will return so that it may fall to the bucket 10 side.

  In the case of the embodiment, the lower end 79a of the vertical plate portion 79 has a tapered triangular cross section. However, if the side surface SM deviated from the gravity center G of the nut N1 in an inappropriate posture can be locked, the rectangular cross section is simply used. Or a projection having a semicircular cross section or the like.

  The front / back sorting piece 76 has a mounting hole 77a through which the bolt 77b is inserted and extends in the left-right direction. The vertical plate portion 79 is secured when the bolt 77b is fixed to the mounting substrate 62 of the mounting portion 77. Adjusting the distance from the upper end surface 16a of the push-up portion 16 at the lower end 79a of the belt, in other words, the arrangement position of the lower end 79a of the front / back sorting piece 76 along the direction orthogonal to the conveying direction with respect to the belt conveyor 51, 77 can be attached.

  In the belt conveyor 51 of the embodiment, the edge 52b is stepped and lowered. However, the belt conveyor 51 may be configured not to be provided with a step, and in that case, the belt conveyor 51 is inappropriate from the upper surface 52a of the belt conveyor 51. The separation distance SL2 between the guide surface 68a and the push-up portion 16 may be set substantially equal to the width dimension LN1 excluding the welding projection P for one side of the nut N1 so that the nut N1 in the posture can be easily dropped.

  Then, as shown in FIG. 11, the bent portion 69 of the guide wall portion 65 is formed by gently bending the guide surface 69a outwardly from the guide surface 68a of the second linear portion 68 in an arc shape. The inner guide wall portion 85 is configured and is connected to a rectangular tube-shaped guide tube portion 88 connected to the supply chute 90.

  Further, as shown in FIG. 11, a thickness selection piece (height selection piece) 82 as a third selection means is disposed in front of the guide wall portion 65. The thickness selecting piece 82 has substantially the same curvature as that of the bent portion 69 so that the rear end 82b faces the bucket 10 and the front end 82a side is formed with the outer guide wall portion 86 of the nut N1 connected to the guide tube portion 88. It is configured. The thickness selecting piece 82 has an insertion recess 83 that is recessed in a rectangular shape from the lower end 82 c on the front side of the conveyance path 52 between the guide surface 68 a of the second linear portion 68 and the push-up portion 16. Yes. A gap 84 between the upper edge 83a of the insertion recess 83 and the upper surface 52a of the conveyance path 52 is slightly larger than the thickness dimension TB1 of the main body B1 of the nut N1, and the entire thickness including the welding projection P of the nut N1. It is set slightly smaller than the dimension TN1. The insertion recess 83 has a left edge 83b disposed in the vicinity of the upper end surface 16a of the push-up portion 16, and a right edge 83c disposed outside (on the right side) beyond the guide surface 68a of the second linear portion 68. A wide opening is provided in the left-right direction. The lower end 82c of the thickness selecting piece 82 excluding the insertion recess 83 is disposed slightly apart from the upper surface 52a side of the transport path 52, like the lower end 65b of the guide wall portion 65.

  The thickness selecting piece 82 is conveyed to the supply chute 90 side through the guide cylinder portion 88 by sliding the nut N1 in an appropriate posture with the welding projection P disposed on the upper surface side to the guide surface 82d. . And this thickness selection piece 82 lets the nut N1 which is not provided with the welding projection P pass through the insertion recess 83 and drop into the predetermined storage box from the front end 52c of the conveyance path 52. Will be eliminated.

  The inner guide wall 85 at the front end of the guide wall 65 and the outer guide wall 86 on the front end 82a side of the thickness selecting piece 82 are separated from the conveying path 52 as shown in FIGS. In this position, the guide tube portion 88 has a rectangular tube shape that is inclined downward and is connected to a supply chute 90 that can supply a nut N1 to a predetermined delivery device.

  In the supply device 1 of the embodiment, the air cylinders 22 and 32 of the first drive mechanism 21 and the second drive mechanism 31 of the lift mechanism unit 20, the air cylinder 46 for raising and lowering the stirring plate 45, and for driving the belt conveyor 51. When the drive motor 56 is operated, the nut N1 in an appropriate posture can be supplied to the supply chute 90 side.

  That is, when the lift mechanism 20 is operated, the piston rods 23 and 33, the base plates 24 and 34, the first inner rod 25, the first outer rod 26, and the second inner side are operated by the operation of the air cylinders 22 and 32. The rod 35 and the second outer rod 36 are moved up and down, and the first inner shelf 27, the first outer shelf 28, the second inner shelf 37, and the second outer shelf 38 are moved up and down.

  In this case, first, as shown in FIG. 12, if the first inner shelf 27 is disposed at the lowest position of the bottom wall 11 of the bucket 10, the receiving surface 27 a is inclined due to the inclination of the bottom wall 11 of the bucket 10. A predetermined number of nuts N1 are placed thereon. At this time, even if the nut N1 placed on the receiving surface 27a slides on the conveyance path 52 side, it comes into contact with the side surface 37b of the second inner shelf portion 37 and remains on the receiving surface 27a.

  Thereafter, when the piston rod 23 of the air cylinder 22 is raised and the piston rod 33 of the air cylinder 32 is lowered, the first inner shelf 27 is raised and the second inner shelf 37 is lowered as shown in FIG. Then, the receiving surfaces 27a and 37a are connected with the conveying path 52 side lowered, and the nut N1 on the receiving surface 27a is transferred onto the receiving surface 37a. At this time, even if the nut N1 placed on the receiving surface 37a slides on the conveyance path 52 side, the nut N1 hits the side surface 28b of the first outer shelf 28 and remains on the receiving surface 37a.

  Thereafter, when the piston rod 23 of the air cylinder 22 is lowered and the piston rod 33 of the air cylinder 32 is raised, as shown in FIG. 14, the second inner shelf portion 37 is raised and the first outer shelf portion 28 is lowered. Then, the receiving surfaces 37a and 28a are connected in a state where the conveying path 52 side is lowered, and the nut N1 on the receiving surface 37a is transferred onto the receiving surface 28a. At this time, even if the nut N1 placed on the receiving surface 28a slides on the conveyance path 52 side, the nut N1 hits the side surface 38b of the second outer shelf 38 and stays on the receiving surface 28a. At this time, since the first inner shelf 27 is arranged at the lowest position as shown in FIG. 12, the nut N1 stored in the bottom wall 11 is placed on the receiving surface 27a. It will be in the state to put.

  After that, when the piston rod 23 of the air cylinder 22 is raised and the piston rod 33 of the air cylinder 32 is lowered, the first outer shelf 28 is raised and the second outer shelf 38 is moved as shown in FIG. Lowering, the receiving surfaces 28a, 38a are in a state where the conveying path 52 side is lowered, and the nut N1 on the receiving surface 28a is transferred onto the receiving surface 38a. At this time, even if the nut N1 placed on the receiving surface 38a slides on the conveyance path 52 side, the nut N1 hits the side surface 18c of the guide plate 18 and remains on the receiving surface 38a. At this time, as shown in FIG. 13 described above, the first inner shelf 27 and the second inner shelf 37 connect the receiving surfaces 27a and 37a. The nut N1 can be transferred to the surface 37a.

  Next, when the piston rod 23 of the air cylinder 22 is lowered and the piston rod 33 of the air cylinder 32 is raised, as shown in FIG. 16, the second outer shelf 38 is raised, and the receiving surface 38a is conveyed. In a state where the path 52 side is lowered, the guide plate 18 is made higher than the upper surface 18a and is connected to the upper surface 18a, so that the nut N1 on the receiving surface 38a passes through the upper surface 18a and passes through the upper surface of the conveyance path 52. 52a is transferred. At this time, as shown in FIG. 14 described above, the second inner shelf portion 37 and the first outer shelf portion 28 connect the receiving surfaces 37a and 28a to each other. The nut N1 can be transferred onto the receiving surface 28a.

  Then, when the nut N1 is transferred onto the transport path 52 of the belt conveyor 51 by the operation of the lift mechanism section 20, first, the guide of the overhanging section 67 from the guide surface 66a of the first linear section 66 on the transport path 52. The surface 67 a is slid to try to slide on the guide surface 68 a of the second linear portion 68. At that time, as shown in FIG. 8, the inverted removal selection piece 73 serving as the first selection means drops the nut N1 in an inappropriate posture in an inverted state so as to be returned to the bucket 10 side.

  Further, when the nut N1 that has passed through the gap 74 on the lower end side of the inverted removal selection piece 73 attempts to pass through the part of the front and back selection piece 76 as the second selection means, as shown in FIGS. In the nut N1 in an inappropriate posture in which the protrusion P is disposed on the lower surface side, the side surface SM is locked to the lower end 79a of the front / back sorting piece 76, rotates clockwise, and is returned to the bucket 10 side. To fall.

  After that, the nut N1 that has passed through the gap 80 on the lower end 79a side of the front / back sorting piece 76 is provided with a thickness sorting piece 82 as third sorting means, as shown in FIG. If the nut N1 has a proper posture and is removed by dropping from the front end 52c of the conveyance path 52 through the insertion recess 83, the guide for the thickness selecting piece 82 is provided. It slides on the surface 82d, passes between the outer guide wall portion 86 and the inner guide wall portion 85, passes through the guide tube portion 88, and is transferred to the supply chute 90 side.

  Then, for example, when changing the supplied accessory part to the flanged nut N2 shown in FIG. 17, it is changed to a sorting attachment 61A corresponding to the flanged nut N2 as in the sorting unit 60A shown in FIGS. Then, the sorting attachment 61A may be attached to the attachment seats 6a, 6a. In addition, in this nut N2, the state which has arrange | positioned the flange F to the lower surface side is made into an appropriate attitude | position, and it supplies to the supply chute 90A side.

  The sorting attachment 61A, like the sorting attachment 61, includes a guide wall portion 65A extending downward from the mounting substrate portion 62, and the guide wall portion 65A sets the separation distance SL1 from the push-up side portion 16 as described above. The diameter of the first straight portion 66A (see FIGS. 1 and 18) that is larger than that of the attachment 61, the curved protruding portion 67A, and the distance from the push-up portion 16 is the diameter dimension of the flange F that is approximately one nut N2. A second straight line portion 68A and a bending portion 69A having a separation distance SL2 corresponding to LND (see FIG. 17) are provided. Further, an inverted removal selection piece 73A as a first selection means for returning the inverted nut N2 to the bucket 10 side is disposed near the overhanging portion 67A, and as a second selection means at the site of the second linear portion 68A. A thickness sorting piece 82A as a third sorting means is arranged near the front of the bent portion 69A.

  As shown in FIG. 20, the inverted removal selection piece 73 </ b> A has a gap 74 slightly larger than the entire thickness dimension TN <b> 2 of the nut N <b> 2 and smaller than the diameter dimension LND, between the conveyance path 52. Further, it is disposed in the vicinity of the middle in the front-rear direction of the transport path 52 and is formed in an arc surface shape that is separated obliquely forward from the overhanging portion 67 </ b> A so that the front end 73 a enters the bucket 10. The inverted removal selection piece 73A has a vertical length that is about half of the diameter LND of the nut N2, and the nut N2 conveyed on the conveyance path 52 has an end surface Td, Tu side on the upper surface 52a of the conveyance path 52. If the outer peripheral surface RM of the flange F is conveyed in an inverted state in which the flange F is in contact with the upper surface 52a, the nut N2 in an inappropriate posture is slid on the guide surface 73b on the bucket 10 side. , Dropped into the bucket 10 and returned. The nut N2 having the end faces Td and Tu in contact with the upper surface 52a of the transport path 52 passes through the gap 74 and is transported to the second linear portion 68A side.

  As shown in FIGS. 21 and 22, the second straight portion 68A is gently and continuously disposed on the front side of the overhang portion 67A extending from the vicinity of the front end of the first straight portion 66A, and the guide surface 68a of the second straight portion 68A. And the upper end surface 16a of the push-up portion 16 are configured to be separated by a separation distance SL2. As described above, the separation distance SL2 is substantially equal to the diameter dimension LND of the nut N2.

  A front / back sorting piece 76A as a second sorting means is disposed at an intermediate portion in the front-rear direction of the second straight portion 68A. The front / back sorting piece 76 </ b> A includes an attachment portion 77 attached to the attachment substrate portion 62, and a vertical plate portion 79 extending downward from the attachment portion 77 via the bent portion 78, and the vertical plate portion 79 is on the bucket 10 side. It is formed in the shape of a curved surface that protrudes from the surface. The lower end 79a of the vertical plate portion 79 (the projection of the front / back sorting piece 76A) makes the gap 80 with the upper surface of the conveyance path 52 larger than the thickness dimension TF of the flange F including the welding projection P of the nut N2. In addition, the thickness (height dimension) TB2 of the main body B2 excluding the flange F is set smaller than that. And the separation distance SL3 between the guide surface 79b closest to the bucket 10 side of the vertical plate portion 79 and the edge 52b provided with the step of the transport path 52 is set as follows. That is, even if the nut N2 in the proper posture slides the main body B2 above the flange F on the guide surface 79b, the center of gravity G does not come off from the conveyance path 52, but the end surface Td provided with the welding projection P in the inappropriate posture. When the nut N2 arranged on the upper surface side passes, the flange F slides on the guide surface 79b, and at that time, the center of gravity G shifts from the upper surface 52a side of the conveyance path 52 to the edge 52b. Is set.

  Therefore, if it is conveyed by the conveyance path 52 and reaches the part of the front / back sorting piece 76A, the nut N2 in an appropriate posture passes through the main body B2 while sliding on the guide surface 79b as shown in FIG. However, in the nut N2 in an inappropriate posture, as shown in FIG. 22, the outer peripheral surface RM of the flange F slides with the guide surface 79b, the center of gravity G slips off from the conveyance path 52, and falls to the bucket 10 side. To do.

  Even in this case, the belt conveyor 51 may be configured not to have the edge 52b provided with a step. Incidentally, in that case, the separation distance between the guide surface 79b and the push-up portion 16 is set to the difference in the deviation of the center of gravity G of the nut N2 between the appropriate posture and the inappropriate posture described above when passing the front and back sorting pieces 76A. Correspondingly, the separation distance SL3 may be set.

  As shown in FIG. 23, the thickness selection piece 82A has a thickness obtained by removing the gap 84 between the upper edge 83a of the insertion recess 83 and the lower conveyance path 52 from the welding projection P of the nut N2. It is slightly larger than the dimension TB3 and smaller than the entire thickness dimension TN2 including the welding projection P of the nut N2. Therefore, in this thickness selection piece 82A, the nut N2 in the proper posture with the welding projection P disposed is slid on the guide surface 82d and conveyed to the supply chute 90A side through the guide tube portion 88A. Is done. On the other hand, those not provided with the welding projections P pass through the insertion recesses 83 and fall into the predetermined storage box from the front end 52c of the conveyance path 52, and are eliminated.

  In the sorting attachment 61A as the sorting unit 60A, the guide tube portion 88A and the supply chute 90A also have an opening shape corresponding to the nut N2 to be supplied.

  As described above, in the supply device 1 according to the embodiment, even when the nut N2 with the flange is supplied, the selection attachment 61 can be changed to the selection attachment 61A and can be smoothly attached only to the attachment seats 6a and 6a. it can.

  Therefore, in the supply apparatus 1 of the embodiment, the bucket 10 has a substantially rectangular parallelepiped shape in which the upper opening 10a is opened in a rectangular shape, and the bucket 10 has a rectangular shape when viewed from above. If the ball-shaped bucket is disposed so as to face the corner portion, it can be installed so as to be fitted to the corner portion side as compared with the case where the ball-shaped bucket is disposed in the vicinity of the corner portion.

  In addition, the sorting attachments 61 and 61A of the sorting units 60 and 60A are arranged above the upper surface 52a side that linearly conveys the nuts N1 and N2 as small parts of the belt conveyor 51, and the sorting unit 60 , 60A can be installed as a straight line instead of a curved line, so that even if the dimensional shape of the nuts N1 and N2 to be selected is changed, the nut N1 with an inappropriate posture corresponding to the external shape of the nuts N1 and N2 , N2 is returned to the bucket 10 side, and the shape of the guide wall portions 65, 65A of the sorting portions 60, 60A, the sorting pieces 76, 76A, etc. for passing the nuts N1, N2 of the proper posture to the supply chutes 90, 90A side Can be designed in a straight line along the conveying direction of the belt conveyor 51, compared to the curved selection part of a conventional ball-shaped nut feeder. , Without a skilled person, easily addressed, it can be designed.

  And also at the time of attachment, it is only necessary to attach the attachment part 63 of the sorting parts 60 and 60A to the attachment seats 6a and 6a as the attachment parts above the linear conveyance path 52 of the belt conveyor 51 using the bolt 6b. It can be easily replaced and the sorting attachments 61 and 61A of the corresponding sorting units 60 and 60A can be arranged on the transport unit 50.

  Furthermore, if the sorting parts 60 and 60A are linear and the length of the straight line conveyed by the belt conveyor 51 is a dimension that allows the sorting parts 60 and 60A to be installed using the mounting seats 6a and 6a, the rectangular parallelepiped shape. Even if the size of the bucket 10 is changed, the sorting portions 60 and 60A corresponding to the changed nuts N1 and N2 can be attached and used without any trouble.

  Furthermore, what conveys nut N1, N2 in the conveyance part 50 is not a vibration feeder but the belt conveyor 51, and can quickly convey nut N1, N2 to the supply chute 90, 90A side. Since the nuts N1 and N2 can be quickly conveyed to the supply chutes 90 and 90A, it is not always necessary to operate the supply device 1, but only when a predetermined number of nuts N1 and N2 are required at the supply destination. The supply device 1 can also be operated, the generation time of the operation sound can be shortened, and the generation of noise can be suppressed.

  Therefore, the supply device 1 according to the embodiment can be installed in a small space, and can quickly supply the nuts N1 and N2 in an appropriate posture, and can easily cope with changes in the dimensional shape of the nuts N1 and N2 to be selected. can do.

  Further, in the sorting attachment 61 of the embodiment, the mounting board portion 62 provided with the guide wall portion 65 can be screwed to the mounting portion 63 by shifting the position of the bolt 63b inserted into the mounting hole 63a to the left and right. For example, the separation distance SL1 from the push-up side portion 16 of the guide wall portion 65, in other words, the arrangement position (attachment position) along the direction orthogonal to the conveyance direction with respect to the belt conveyor 51 can be adjusted. Further, the lower end 79a of the front / back sorting piece 76 as the second sorting means also changes the arrangement position of the bolt 77b to be inserted into the mounting hole 77a, in other words, the mounting position along the direction perpendicular to the conveying direction with respect to the belt conveyor 51. Thus, the separation distance from the push-up portion 16 of the guide wall portion 65 can be adjusted.

  Therefore, when the square nut N3 having a shape in which the width dimensions LN0 and LN1 are largely changed from the nut N1 is transferred to the supply chute 90, as shown in FIG. 24, the guide wall portion 65 and the front / back sorting piece 76 are pushed up. If the separation distance from the side portion 16 is adjusted in correspondence with the nut N3 and the sorting attachment 61 is attached, the nut N3 in an appropriate posture can be easily transferred to the supply chute 90 side. That is, the sorting attachment 61 is not curved but linear, and the separation distance from the bucket 10 side of each sorting unit 60, 60A, in other words, each sorting along the direction orthogonal to the conveying direction with respect to the belt conveyor 51. When the mounting positions of the portions 60 and 60A (sorting attachments 61 and 61A) are adjusted and arranged, the adjustment width C is provided and adjusted so as to be linearly shifted in the direction orthogonal to the transport direction of the transport path 52. You can easily deal with it. Therefore, in the supply device 1 according to the embodiment, if the nuts N1 and N3 to be supplied by changing are slightly changed in size, the same sorting attachment 61 can be used and it is possible to cope with it very easily. .

  Incidentally, the height of the sorting attachments 61 and 61A as the sorting units 60 and 60A from the upper surface 52a of the belt conveyor 51 is such that a removable spacer is fitted between the mounting substrate 62 and the mounting portions 63 and 63 in advance. If the thickness of the spacer can be adjusted, it can be easily changed.

  Further, in the supply device 1 of the embodiment, the lift mechanism unit 20 has the upper surfaces of the receiving surfaces 27a, 28a, 37a, and 38a that are inclined so that the height of the upper surface is different and the conveying unit 50 side is lowered. A plurality of shelves 27, 28, 37, and 38, and a plurality of drive mechanisms 21 and 31 that hold and lift the plurality of shelves 27, 28, 37, and 38. . A shelf 37 held by the drive mechanism 31 is arranged between the plurality of shelves 27 and 28 held by the drive mechanism 21, and between the plurality of shelves 37 and 38 held by the drive mechanism 31. Further, when the adjacent shelf 37 is lowered, for example, as shown in FIGS. 12 and 13, the shelf 27 is raised and raised. The nut N1 on the receiving surface 27a of the shelf portion 27 is configured to slide on the receiving surface 37a of the adjacent shelf portion 37 for transfer.

  Therefore, in the supply apparatus 1 of the embodiment, when the shelf 27 on the lower side is raised when descending and the nut N1 on the receiving surface 27a of the shelf 27 is transferred to the adjacent shelf 37, the adjacent shelf 37 is adjacent. The side shelf 37 is lowered, and the nut N1 of the raised shelf 27 is transferred to the lowered shelf 37. In other words, when transferring small parts between the shelves, the shelves on the transfer side are lowered to receive the nut N1, and the shelves 27 of the drive mechanisms 21, 31 one by one. It is possible to transfer the nut N <b> 1 from the bottom wall 11 side of the bucket 10 to the belt conveyor 51 by reducing the stroke for raising and lowering 28, 37, and 38.

  That is, with such a configuration, the push-up stroke of the drive mechanisms 21 and 31 can be reduced, the height dimension of the drive mechanisms 21 and 31 can be reduced, and the vertical dimension of the supply device 1 can be made compact.

  Incidentally, in a conventional supply device that raises and lowers a plurality of shelves with different heights (for example, the supply device described in Patent Document 2), a fixed shelf is arranged between the shelves that are raised and lowered. Therefore, it is necessary to raise the shelf part to be raised and lowered to the shelf part, and since the shelf part on the side to be transferred is not lowered as in the above configuration, in the conventional device, the pushing stroke of the drive mechanism is Compared to the configuration, the required amount is twice as much.

  For this reason, in the configuration as described above, the bucket 10 is rectangular in plan view, and coupled with the fact that the supply device 1 can be installed in a space-saving manner, the height dimension can also be made compact, and the supply device 1 can be further reduced in space-saving. Can be installed.

  Although the small parts to be welded to the workpiece W have been described as nuts N1, N2, and N3 in the embodiment, the small parts supplied by the supply device of the present invention may be not only nuts but also bolts or the like.

DESCRIPTION OF SYMBOLS 1 ... Supply apparatus, 6a ... (attachment site | part) Mounting seat, 10 ... Bucket, 10a ... Opening, 11 ... Bottom wall, 15 ... Side wall, 16 ... Push-up side part, 20 ... Lifting mechanism part, 21 ... 1st drive mechanism, 27: first inner shelf, 27a: receiving surface, 28 ... first outer shelf, 28a ... receiving surface, 31 ... second drive mechanism, 37 ... second inner shelf, 37a ... receiving surface, 38 ... 2nd outer side shelf part, 38a ... Reception surface, 50 ... Conveyance part, 51 ... Belt conveyor, 52 ... Conveyance path, 52a ... Upper surface, 60, 60A ... Sorting part (60A ... 2nd sorting part), 61, 61A ... sorting attachment, 73, 73A ... (first sorting means) inverted removal sorting piece, 76, 76A ... (second sorting means) front and back sorting pieces, 82, 82A ... (third sorting means) thickness sorting pieces, 90 , 90A ... supply chute, N1, N2, N3 ... (small parts) nuts.

Claims (3)

It is configured to be able to supply small parts with proper posture via a supply chute,
A bucket that stores a large number of small parts; a lift mechanism that pushes up the small parts from the bottom wall side of the bucket to the upper end side of the side wall of the bucket; and the lift mechanism part that is disposed on the upper end side of the side wall. A transport unit that can transport the small parts pushed up at the supply chute side,
The conveying unit is configured to include a sorting unit that conveys the small-sized component in an appropriate posture among the small-sized components to be conveyed to the supply chute side and returns the small-sized component in an inappropriate posture into the bucket. A device for supplying small parts,
The bucket has a substantially rectangular parallelepiped shape having a rectangular opening above,
The transport unit is provided with a belt conveyor disposed on the upper end side of the side wall to transport the accessory parts to the supply chute side,
The sorting section is detachably disposed above the upper surface side of the belt conveyor for conveying the small parts in a straight line, and
For the small parts that have been changed from the small parts, the sorting section to which the sorting section is attached transports the correct posture to the supply chute side, and returns the incorrect posture to the bucket. A small-part supply device characterized in that it can be attached with a second sorting section different from the above.   The sorting unit is configured to be attached to the attachment site so that the attachment position with respect to the belt conveyor can be adjusted along a direction orthogonal to a conveyance direction of conveying the accessory parts of the belt conveyor. The apparatus for supplying small parts according to claim 1. The lift mechanism is
Holding the plurality of shelves with a plurality of shelves arranged on the upper surface with the receiving surfaces of the accessory parts inclined so as to make the height of the upper surface different and lower the conveying unit side And a plurality of drive mechanisms for moving up and down,
The drive mechanism has a configuration in which the shelf held by the other drive mechanism is arranged between the plurality of held shelf parts, and the shelf part held when the adjacent shelf part is lowered. The small parts on the receiving surface of the shelf that are raised are slid onto the receiving surface of the adjacent shelf and transferred. The apparatus for supplying small parts according to claim 1 or 2.

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