JP4523932B2 - Screw member supply device - Google Patents

Description

  The present invention relates to a screw member supply device that receives a screw member such as a bolt from a feeding means such as a parts feeder and accurately conveys the screw member to a position where a screw tightening robot or the like takes out the screw member. This apparatus is suitably employed in, for example, an automatic assembly facility in which a screw tightening robot takes a bolt and holds the bolt on the tip gripping portion.

  In manufacturing electronic parts such as various machine tools and semiconductor devices, automation is progressing for labor saving, efficiency, and safety. For example, in the automobile production line, work such as welding and screw tightening is performed. Various robots are deployed according to the content. As a screw tightening robot, a flexible moving arm is operated and a screw member supplied to a predetermined take-out position is held by a screw tightening tool at the tip of the arm, and the arm is controlled so that the screw member is applied to a target workpiece. There is known one that repeats an operation such as tightening (see, for example, Patent Document 1).

  A screw tightening robot may be provided with a supply device that receives a screw member from a parts feeder that supplies a large number of screw members and accurately conveys the screw member to a position where the robot takes out the screw member. In some cases, a small robot including a flexible moving arm similar to the screw tightening robot may be employed for this supply device. The supply robot has a socket for holding a screw member at the end of the arm, holds one screw member cut out from the parts feeder in the socket, and repeats the operation of turning the arm and placing it in the take-out position. ing.

Japanese Patent Publication No. 6-218637

When the distance from the parts feeder to the position where the screw tightening robot takes out the screw member is long, conventionally, a relay point is arranged between them, and the supply robot is installed on both sides (upstream and downstream). . However, this configuration requires a plurality of supply robots, and the arm type robot itself requires a space for turning, which is disadvantageous in terms of space saving and cost. In addition, since it took a long time to set the bolt from the parts feeder to the robot take-out position and then return to the parts feeder, there was a complaint that the total working time was prolonged.
Accordingly, an object of the present invention is to provide a screw member supply device that can save space and reduce costs.

The present invention provides a plurality of screw member supply units that supply screw members one by one, and a screw member holding unit that is provided corresponding to these screw member supply units and receives and holds one screw member from the screw member supply unit. A plurality of screw member receiving portions having at least one, an arrangement switching means for switching these screw member receiving portions so as to correspond to any one of the screw member supplying portions, and all the screw member receiving portions. The arrangement switching means is a rotatable rotating member, and the screw member receiving portion moves so as to correspond to the screw member supply portion by the rotation of the arrangement switching means. The screw member receiving portion is provided so as to be able to rotate about an axis that is separated from the rotation shaft of the arrangement switching means and is parallel to the rotation shaft. Wood holding means is characterized in that is provided with a plurality on the threaded member receiving portion.

  In the present invention, each screw member receiving portion is arranged corresponding to a plurality of screw member supply portions (corresponding to the above-mentioned parts feeder and the like), and the screw member holding means provided in each screw member receiving portion is screwed. The screw member supplied from the member supply unit is held. Next, the screw member is conveyed by the conveying means to the predetermined removal position together with the screw member receiving portion. This take-out position is, for example, a position where the screw tightening robot takes out and holds the screw. After the robot or the like has taken out the screw member, the screw member receiving portion returns to the screw member supply portion, and the screw member is again supplied to the take-out position by the same operation.

  According to the present invention, the screw member is supplied from the screw member supply portion to the take-out position in a simple process such that the screw member holding means of the screw member receiving portion holds the screw member and the screw member receiving portion is conveyed to the take-out position. be able to. Therefore, the supply time of the screw member can be shortened, and the apparatus can be simplified and the power can be reduced. As a result, space saving and cost reduction can be achieved.

  In the present invention, when screw members of different types (for example, different sizes) are supplied for each screw member supply unit, the arrangement of the screw member receiving unit is changed to the initial screw member supply unit by the arrangement switching means. By switching from to the other screw member supply unit, the screw member receiving unit can distribute and hold other types of screw members. When a plurality of screw member holding means are provided in the screw member receiving portion, a plurality of types of screw members can be held in one screw member receiving portion. For this reason, a plurality of types of screw members can be distributed and supplied to specified positions at the take-out position, and can be applied to complicated screw tightening operations.

In the present invention , the arrangement switching means is a rotatable rotating member, and the screw member receiving portion is moved so as to correspond to the screw member supply section by the rotation of the arrangement switching means comprising the rotating member , and the screw member receiving portion is disposed switched away from the axis of rotation of the means and provided capable of rotating in about an axis parallel to the rotary shaft, the screw member retaining means, because provided with a plurality on the threaded member receiving portion, a plurality The operation of distributing the types of screw members to the plurality of screw member holding means of one screw member receiving portion can be realized with a simple configuration.

  According to the present invention, the screw member is supplied from the screw member supply portion to the take-out position in a simple process such that the screw member holding means of the screw member receiving portion holds the screw member and the screw member receiving portion is conveyed to the take-out position. Therefore, the screw member supply time can be shortened, the apparatus can be simplified and the power can be reduced. As a result, the space can be saved and the cost can be reduced.

Hereinafter, an embodiment of the present invention will be described with reference to the drawings.
[1] Configuration of One Embodiment FIG. 1 is a conceptual diagram illustrating an example of a machine tool to which a bolt supply device according to one embodiment is applied. This machine tool is a machine for tightening bolts to a product being assembled by robots 423 and 424 having articulated arms. Reference numeral 420 in FIG. 1 denotes a robot cart on which robots 423 and 424 are mounted. This robot carriage 420 is integrated with a take-out unit 421, which will be described later, and is movable on the rails 422a and 422b in the left-right direction in the figure.

  On the side of the moving robot carriage 420 (upward in FIG. 1), a product (for example, an automobile) moves on a production line (not shown) from the right to the left, and the robots 423 and 424 are predetermined for the product. The bolts are tightened at the points.

  A fixed base 401 is disposed on the opposite side of the production line across the robot carriage 420. A parts feeder 402A is disposed on the fixed base 401. The parts feeder 402A sends a bolt 404 to a bolt slide mechanism 405 through a bolt supply line 403 from a bolt filler 402 filled with a large number of bolts (screw members) 404, and further from the bolt slide mechanism 405, which will be described later. The bolt 404 is sent to the preset units (screw member receiving portions) 406 and 413. The bolt slide mechanism 405 has a bolt supply path orthogonal to the bolt supply line 403, and the bolt 404 is cut out by a feed mechanism such as a pusher or the like, and a cutting unit (screw member supply unit) 510 shown in FIG. To the cutting head 511. Then, the bolt 404 is freely dropped at a predetermined timing by the cutting unit 510 with respect to the preset unit 406 (or 413) positioned below.

  As shown in FIG. 4, the cutting unit 510 is provided at the tip of the bolt slide mechanism 405 and receives the cutting head 511 to which the bolt 404 is fed from the bolt slide mechanism 405 and the bolt 404 sent to the cutting head 511. And a shutter plate 512 to be dropped. The cutout head 511 is formed with a drop hole 511a into which the bolt 404 sent from the bolt slide mechanism 405 can enter and can fall through. The shutter plate 512 is a rectangular plate, and is guided by a guide 513 fixed to the cutting head 511 so as to be able to advance and retreat directly above the drop hole 511 a of the cutting head 511.

  The forward / backward movement of the shutter plate 512 is performed by the reciprocating movement of the piston 515a of the cylinder 515 attached to the fixed base 401. When the piston 515a expands and the shutter plate 512 advances, the front end portion thereof is positioned immediately above the drop hole 511a of the cutting head 511, and when the piston 515a contracts, the front end portion of the shutter plate 512 retracts from the drop hole 511a. As shown in FIG. 5, a slit 512 a that opens to the front end side and extends in the longitudinal direction is formed at the front end portion of the shutter plate 512. The slit 512a has a width through which the shaft portion 404b of the bolt 404 passes and the head portion 404a of the bolt 404 does not come off.

  According to the cutting unit 510, the shaft portion 404 b of one bolt 404 that is fed forward from the bolt slide mechanism 405 with the shutter plate 512 advanced immediately above the drop hole 511 a of the cutting head 511 is moved to the cutting head 511. At the same time as it enters the drop hole 511a, it enters the slit 512a of the shutter plate 512, and the bolt head 404a is received by the tip of the shutter plate 512. From this state, when the shutter plate 512 is retracted to the open state, the bolt 404 freely falls through the drop hole 511a. Thus, the bolts 404 are cut out one by one and received by the bolt holding means (screw member holding means) 408 of the preset unit 406 disposed below the drop hole 511a.

  As shown in FIG. 1, the preset unit 406 has a disk shape and is rotatably supported on a movable pedestal (arrangement switching means, rotating member) 407 with the center as a rotation axis. The preset unit 406 is rotationally driven by a rotation motor 406a shown in FIG. A plurality (six in this case) of bolt holding means 408 are provided on the outer peripheral portion of the preset unit 406 at equal intervals in the circumferential direction. As shown in FIGS. 4 and 6, the bolt holding unit 408 includes a chuck mechanism 520 including a pair of sliders 521. In the center of the chuck mechanism 520, a mortar-shaped through hole 522 whose diameter decreases as it goes downward is formed. The slider 521 is provided so as to be movable in a direction away from or approaching each other, and the through hole 522 is enlarged or reduced by this. Each slider 521 is operated by a chuck cylinder 523.

  As shown in FIG. 4, the bolt 404 cut out by the cutting unit 510 has a constant posture in which the axis line is substantially along the vertical direction, the head portion 404 a is arranged on the upper side, and the shaft portion 404 b faces downward. Then it falls freely. The falling bolt 404 falls into the through hole 522 when the chuck mechanism 520 is in a closed state, that is, when the sliders 521 are in contact with each other.

  The bolt 404 dropped into the through-hole 522 of the chuck mechanism 520 descends while being guided by the inner surface of the mortar-shaped through-hole 522, the threaded portion 404 b passes partway through the lower end opening of the through-hole 522, and the head 404 a is mortar-shaped. It is held in a state of being engaged with the inner surface. The opening diameter of the lower end of the through hole 522 is slightly larger than the outer diameter of the threaded portion 404b of the bolt 404. The bolt 404 is received and engaged with the chuck mechanism 520 in this way, and is held in a state centered at a predetermined position that is the center of the bolt holding means 408 in the above-described fixed posture. When the sliders 521 are separated from each other, the chuck mechanism 520 is opened, and the lower end opening of the through hole 522 is wider than the diameter of the bolt head 404b, the bolt 404 is free to fall through the through hole 522. .

  As shown in FIG. 1, the movable pedestal 407 can be moved in the vertical direction of FIG. 1 by a moving mechanism 430 with respect to the fixed base 401. That is, the moving mechanism 430 includes a cylinder 432 and a piston 434. The piston 434 is driven by hydraulic pressure and moves up and down in FIG. 1 with respect to the cylinder 432.

  FIG. 2 is a side view showing an outline of the moving mechanism 430. FIG. 2 shows an outline of the moving mechanism 430 in the state shown in FIG. As shown in FIG. 2, the cylinder 432 has a fixing portion 433 at the end of the main body fixed to the bracket 431 by a pin 431a. The bracket 431 is fixed to a fixing member 436 fixed to the fixing base 401, and includes a hole for allowing the pin 431a to pass therethrough. The tip of the piston 434 is fixed to the support members 409a and 409b via the fixing members 435a and 435b.

  The support members 409a and 409b constitute a U-shaped frame structure, and the tip portion (near the upper end portion in FIG. 1) supports the lower portion of the movable base 407. The support members 409a and 409b are supported by the fixed base side support members 415a and 415b in a state of being movable in the vertical direction in FIG. This support structure is realized by a ball slide mechanism. With these structures, the movable pedestal 407 is movable with respect to the fixed base 401 in the vertical direction in FIG.

  As shown in FIG. 2, a rail 437 is fixed to the lower portion of the support member 409a. The rail 437 is supported by the fixed base side support member 415a by a ball slide mechanism so as to be slidable along the extending direction. A fixing member 435a is fixed to the tip of the piston 434, and a fixing member 435b is fixed to the fixing member 435a. The fixing member 435b is fixed inside the support members 409a and 409b.

  In the configuration shown in FIGS. 1 and 2, when the piston 434 enters and exits the cylinder 432, the movable base 407 moves in the vertical direction in FIG. 1 with respect to the fixed base 401. As an example, FIG. 1A shows a state where the piston 434 is accommodated in the cylinder 432 and the movable base 407 is positioned on the fixed base 401. Further, in FIG. 1B, the piston 434 extends from the state shown in FIG. 1A upward in FIG. 1 with respect to the cylinder 432, and accordingly, the movable base 407 has a phase shift unit 421 to be described later. The state which moved to the position which overlaps with is shown.

  The movable base 407 is rotatable about the shaft 407a. The movable base 407 is rotationally driven by a revolving motor 407b shown in FIG. According to this mechanism, for example, when a bolt with a diameter of 6 mm (M6) is supplied from the parts feeder 402A and a bolt with a diameter of 5 mm (M5) is supplied from the parts feeder 410A, the movable base with the shaft 407a as an axis. By rotating the 407 appropriately 180 degrees and supplying bolts to the preset units 406 and 413, bolts having different diameters can be mixed and held in each preset unit.

  The symbol “A” attached to the movable pedestal 407 in FIGS. 1 and 3 is a symbol for making the orientation of the movable pedestal 407 easy to understand. That is, FIGS. 1 and 3A show a normal arrangement state in which the preset unit 406 on the movable pedestal 407 is arranged on the left and the preset unit 413 is arranged on the right, and in FIG. 3B, the movable pedestal 407 is shown. Is rotated 180 ° and the arrangement is switched such that the preset unit 413 is on the left and the preset unit 406 is on the right, so that “A” is upside down. In FIG. 3, the moving mechanism 430 that moves the movable base 407 in the vertical direction in FIG. 1 is not shown.

  On the fixed base 401, a parts feeder 410A including a bolt filler 410, a bolt supply line 411, and a bolt slide mechanism 412 is disposed symmetrically with the parts feeder 402A. The cutout unit 510 is similarly attached to the tip of the bolt slide mechanism 412. A preset unit 413 having the same configuration as the preset unit 406 is rotatably arranged on the movable base 407. The preset unit 413 is provided with a plurality of bolt holding means (screw member holding means) 414 having the same configuration as the bolt holding means 408.

  As shown in FIGS. 3A to 3B, when the movable pedestal 407 rotates 180 ° from the normal position, the preset units 406 and 413 arranged on the left and right respectively revolve and the preset unit 413 on the left side. The arrangement with the preset unit 406 is switched on the right side. Then, by rotating (spinning) the preset units 406 and 413 and adjusting the rotation angle, the bolt holding means 408 and 414 are cut out by the cut-out unit 510 arranged at the tips of the bolt slide mechanisms 405 and 412. Bolts positioned below the head 511 and received by the bolt holding means 408 and 414 are received.

  The bolt fillers 402 and 410 of the left and right parts feeders 402A and 410A may be filled with two types of bolts of different sizes (for example, M5 and M6 as described above). In that case, one preset unit 406 (by rotating the movable base 407 (revolution) of the left and right positions of the preset units 406, 410 and the rotation (spinning) of each preset unit 406, 413 are combined appropriately. 413) can distribute and set two types of bolts, and can selectively set two types of bolts for each bolt holding means 408 (414).

  The take-out unit 421 is set to be positioned below the movable base 407. As shown in FIG. 1, a plurality of (in this case, six) bolt positioning means 425 and 427 corresponding to the preset units 406 and 413 are arranged in the take-out unit 421. These bolt positioning means 425 and 427 are arranged directly below the bolt holding means 408 and 414 of the preset units 406 and 413 when the movable base 407 moves to the bolt delivery position above the take-out unit 421. Then, the bolts dropped from the bolt holding means 408 and 414 are received by the bolt positioning means 425 and 427 without changing the dropping posture, and finally the robot 423 and 424 are accurately positioned at a position where the bolts can be taken out. The

  As shown in FIG. 4, the bolt positioning means 425 and 427 are arranged at the center with a plate portion 610 having a mortar-shaped through-hole 611 whose diameter decreases toward the bottom, and above the plate portion 610. The cylindrical guide member 620 and a centering mechanism 630 disposed below the plate portion 610 are configured. The through-hole 611 of the plate portion 610 has the same size and shape as the through-hole 522 when the chuck mechanism 520 of the bolt holding means 408, 414 is closed, and the bolt falling from the bolt holding means 408, 414 Are received and held in a fixed posture. As shown in FIG. 4, the bolt 404 passes through the lower end opening of the through-hole 611 and the threaded portion 404 b passes partway, and the head 404 a is engaged with and held by the mortar-shaped inner surface of the through-hole 611. Is accurately positioned at a position where the robots 423 and 424 take out the bolt 404.

  The guide member 620 has a lower opening substantially the same diameter as the upper end opening of the through-hole 611, an upper opening larger than the lower opening, and a bolt holding socket for the robots 423 and 424 in the middle in the axial direction. A taper guide surface 621 is formed to guide the bolt 404 held by the plate portion 610 so as to be concentric. The guide member 620 is arranged concentrically with the through hole 611 of the plate portion 610, and the bolt 404 falling from the bolt holding means 408 and 414 passes through the guide member 620 as shown in FIG. It is designed to be smoothly dropped into the through hole 611 of the portion 610. The bolt 404 is finally positioned by inserting the shaft portion 404b into the centering mechanism 630, and the rotation angle (phase) is also maintained in a predetermined state.

  The robots 423 and 424 arranged on the robot carriage 420 are arranged corresponding to the six bolt positioning means 425 and 427 provided on the left and right sides of the take-out unit 421, respectively. Although not shown in detail, each robot 423, 424 has six bolts 404 holding one bolt 404 positioned by each of the six bolt positioning means 425, 427 at the tip of a flexible articulated arm. The bolt tightening drive unit is arranged in a circumferential shape, and the bolt tightening drive unit is rotatably provided in the arrangement direction (circumferential direction).

  In FIG. 1, the left robot 423 takes out the bolts held by the respective bolt positioning means 425 arranged on the left side, and the right robot 424 takes out the bolts held by the respective bolt positioning means 427 arranged on the right side. . The bolts are taken out from above by inserting the socket at the tip of the bolt tightening drive unit into the guide member 620 and inserting the bolts held in the through holes 611 of the plate unit 610 into the sockets. Is called. In the present embodiment, each of the robots 423 and 424 can attach six bolts, so that a maximum of 12 bolts can be tightened to the product in one operation.

  Between each bolt positioning means 425 and between each bolt positioning means 427 of the positioning unit 421, bolt removing means 426 and 428 are arranged, respectively. The bolt removing means 426 and 428 are configured such that, for example, the bolt held by the socket is dropped and removed by performing a reciprocating operation in which the socket of the robot 423 enters from above and then returns to the original position. It is said that. These bolt removing means 426 and 428 are used for removing the remaining bolts when the bolt fastening by the robots 423 and 424 is poor and the bolts remain in the socket.

  The parts feeder 402A, 410A, the cutting unit 510, the preset units 406, 413 provided with the bolt holding means 408, 414, the movable base 407, and the moving mechanism 430 for moving the movable base 407 forward and backward with respect to the take-out unit 421 are used in the present invention. The bolt supply device which concerns on this is comprised.

[2] Operation and Effect of One Embodiment The above is the configuration of the machine tool according to one embodiment, and then the operation of this machine tool will be described.
FIG. 1 (A) shows a state immediately before the bolts to the products moving on the production line are finished and the robots 423 and 424 return rightward on the rails 422a and 422b. In the process leading to this stage (that is, while the bolts are tightened in the previous stage), the bolt holding means of the left and right preset units 406 and 413 from the left part feeder 402A and from the right part feeder 410A. Bolts are set at 408 and 414.

  Here, different types of bolts are divided and filled in each part feeder, such as M5 in the bolt filler 402 of the left part feeder 402A and M6 in the bolt filler 410 of the right part feeder 410A. An operation example in the case where these two types of bolts are distributed and set to the preset units 406 and 413 will be described.

  As shown in FIG. 3A, the left and right preset units 406 and 413 are placed in a normal arrangement state, and the target number (for example, one or two) of bolts cut out by the cut-out unit 510 is set to the preset units 406 and 413. While being intermittently rotated, the bolt holding means 408 and 414 are freely dropped and set. Of course, the chuck mechanism 520 of the bolt holding means 408 and 414 at this time is closed.

  Next, the movable pedestal 407 is rotated 180 °, and the preset unit 406 is disposed on the right side and the preset unit 413 is disposed on the left side as shown in FIG. After switching the arrangement of the preset units 406 and 413 in this way, bolts are similarly set on the bolt holding means 408 and 414 of the preset units 406 and 413. After the arrangement switching, all the remaining bolt holding means 408 and 414 are set with different types of bolts from the bolts that were initially set. Alternatively, there may be a case where some bolt holding means 408 and 414 are vacant without intentionally setting a bolt.

  The types of bolts to be set in the bolt holding means 408, 414 are arbitrary such as arranging two or four bolts of the same type continuously or every other bolt. The arrangement corresponds to the work contents of the robots 423 and 424 and is arranged so that the robots 423 and 424 can operate efficiently. Thus, in order to mix and selectively set two types of bolts in each bolt holding means 408, 414 of each preset unit 406, 413, the rotation of the movable base 407 and the rotation of the preset units 406, 413 are performed. It is possible by combining appropriately.

  When the bolts are set in the preset units 406 and 413, the movable base 407 is rotated to return the preset units 406 and 413 to the normal arrangement, and then the movable base 407 is moved in the direction of the robots 423 and 424. At that timing, the robot carriage 420 and the take-out unit 421 are moved to the positions shown in FIG. Then, the relative position between the movable base 407 and the take-out unit 421 is adjusted, and the positions of the bolt holding means 408 and the bolt positioning means 425 and the positions of the bolt holding means 414 and the bolt positioning means 427 are matched. Here, the position of each bolt (which type of bolt is set in which bolt holding means 408, 414) corresponds to the work contents of the robots 423, 424, for example.

  Next, the sliders 521 of all the bolt holding means 408 and 414 are simultaneously opened, and all the bolts held by the preset units 406 and 413 are dropped. Then, each of the six bolts held by the preset units 406 and 413 freely falls toward the bolt positioning means 425 and 427 of the take-out unit 421 below, and fits into the through holes 611 of the plate portion 610, It is held by the centering mechanism 630. As a result, the bolt is positioned at the target bolt positioning means 425 and 427 in the alignment unit 421.

  Subsequently, the bolts held by the left bolt positioning means 425 are taken out by the left robot 423, and the bolts held by the right bolt positioning means 427 are taken out by the right robot 424. Each robot 423, 424 tightens those bolts against the product moving through the production line. The robots 423 and 424 after tightening the bolt move to move the socket at the tip through the bolt removing means 426 and 428, and if the bolt is attached to the socket due to poor fastening, the bolt is removed.

  The above is an example of the operation of the machine tool. According to the present embodiment, the bolts fed by the parts feeders 402A and 410A are cut out by the cutting unit 510 and freely dropped, so that the preset units 406 and 413 at the drop destinations. The bolt holding means 408 and 414 are held in a fixed posture and at a predetermined holding position. From this state, the bolt holding means 408 and 414 are moved to the take-out position together with the movable base 407, and then the chuck mechanism 520 is opened, whereby the bolt is again positioned by the bolt positioning means 425 and 427 of the take-out unit 421 by the dropping action. Held.

  In this way, the bolts are transferred from the parts feeders 402A and 410A to the bolt positioning means 425 and 427 which are the bolt removal positions of the robots 423 and 424. In this process, the bolts are transferred from the parts feeders 402A and 410A to the preset units 406 and 413 by free fall from the cut-out unit 510, so that no driving force is required, thereby reducing the cost. Further, since the preset units 406 and 413 are arranged close to the lower side of the cut-out unit 510, space saving can be achieved.

  In addition, the bolts can be supplied through a simple process of setting the bolts from the parts feeders 402A and 410A to the bolt holding means 408 and 414 of the preset units 406 and 413 and then taking the movable base 407 to the unit 421. . Therefore, it is possible to shorten the supply time of the bolts from the parts feeders 402A, 410A to the take-out unit 421, and to simplify the apparatus and reduce the load on the power. From these points, space saving and cost reduction can be achieved.

  Further, when different types of bolts are supplied to each of the parts feeders 402A and 410A, the preset units 406 and 413 are switched by rotating the movable base 407 to switch the left and right arrangement of the preset units 406 and 413. In addition, a plurality of two types of bolts can be distributed and set. Even when two types of bolts are tightened by one robot 423 (424), the work can be handled.

  In the above embodiment, one preset unit 406 (413) handles six bolts, but the number of bolts handled is arbitrary. Also, although two robots are used, the number is arbitrary, and the number of bolts handled by one robot depends on the bolts set in the preset unit 406 (413).

BRIEF DESCRIPTION OF THE DRAWINGS It is a top view which shows an example of the machine tool with which the volt | bolt supply apparatus which concerns on one Embodiment of this invention was applied, Comprising: (A) The state which has set the volt | bolt from the parts feeder to the preset unit, (B) Preset unit In this state, the movable pedestal is placed on the robot-side take-out unit. It is a side view of the advance / retreat mechanism of the movable base shown in FIG. It is a top view which shows the state which has set the volt | bolt to the preset unit from the parts feeder, Comprising: (A) The state in which a preset unit exists in a normal position, (B) The state in which the position of the preset unit switched right and left. It is sectional drawing which shows a cutting unit, a bolt holding means, and a bolt positioning means. It is a top view which shows the shutter plate of the extraction unit shown in FIG. FIG. 5 is a plan view of the chuck mechanism shown in FIG. 4. It is a side view which shows the positional relationship of a parts feeder and the left-right preset unit provided in the movable base.

Explanation of symbols

402A, 410A ... Parts feeder 404 ... Bolt (screw member)
406, 413 ... Preset unit (screw member receiving portion)
407 ... Movable base (placement switching means, rotating member)
408, 414 ... Bolt holding means (screw member holding means)
425, 427 ... Bolt positioning means (other holding means)
430 ... Moving mechanism (conveying means)
510 ... Cutting unit (screw member supply unit)

Claims (1)

A plurality of screw member supply sections for supplying screw members one by one;
A plurality of screw member receiving portions provided corresponding to these screw member supply portions and having at least one screw member holding means for receiving and holding one screw member from the screw member supply portion;
An arrangement switching means for arranging these screw member receiving portions so as to be switchable so as to correspond to any one of the screw member supply portions;
Conveying means for conveying all the screw member receiving portions to a predetermined take-out position ;
The arrangement switching means is a rotating member provided rotatably,
The screw member receiving portion is moved so as to correspond to the screw member supply portion by rotation of the arrangement switching means,
The screw member receiving portion is provided so as to be able to rotate about an axis that is separated from a rotation axis of the arrangement switching unit and is parallel to the rotation axis,
The screw member supply device , wherein a plurality of the screw member holding means are provided in the screw member receiving portion .

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