JP2008221421A - Parts supply method and parts carriage - Google Patents

Abstract

<P>PROBLEM TO BE SOLVED: To provide a parts supply method and parts carriage suitable for shortening a cycle time for parts supply and empty box recovery. <P>SOLUTION: A parts box mounting shelf 2A of the carriage 1 passes a lower side of a parts box stand-by shelf 41 in a picking place and is set at a height to pass an upper side of a parts box receiving shelf of a parts supply station. In the picking place, the parts box mounting shelf 2A is passed below the parts box stand-by shelf 41, and a parts box B on the parts box stand-by shelf 41 is pushed by a scraping arm 65, while sliding the parts box B on the stand-by shelf 41, and the parts box B is transferred from the front end to the parts box mounting shelf 2A of the carriage 1. At the parts supply station, the parts box B is passed above a parts receiving shelf, the parts box B is stopped on the parts box mounting shelf of the carriage 1 by the scraping arm 65 in the parts supply station, and the parts box B is transferred to the parts receiving shelf. <P>COPYRIGHT: (C)2008,JPO&INPIT

Description

  The present invention relates to a component supply method and a component transport carriage provided in an internal combustion engine.

  From the past, parts arranged in order of actual production and arranged or parts boxes containing the parts are loaded onto a transport cart and transported to the intended supply location (line side parts holding table) of the vehicle assembly line. A component supply method has been proposed (see Patent Document 1).

This is because the positioning table moves and adjusts the holding table of the transfer carriage along the parts parallel direction by the positioning mechanism in the state where the parts transfer carriage is brought close to the storage stand at the supply side on the line side. Each storage line is positioned so as to correspond to a straight line. At the time of positioning the holding table, if the pulling drive device is engaged with the holding table and pulled toward the storage table, the holding table is held at a predetermined position by the guide portion, and the holding table is accurately positioned with respect to the storage table. The And after these positioning, by transmitting the driving force on the storage table side to the transfer conveyor by the transmission device, the transfer conveyor is driven and a plurality of parts mounted on the holding table are stored in the corresponding storage table. Sequential supply to the line.
Japanese Patent No. 2953332

  However, in the above-described conventional example, the parts transport carriage is stopped at the parts supply place on the line side, and the parts are supplied after being aligned. This stop / positioning time becomes a loss time. In addition, when parts are supplied by boxes or trays, it is necessary to collect empty boxes from which the parts have been taken out. In this case as well, stop and position the transport carriage at the collection place such as empty boxes. Cause a loss time.

  Accordingly, the present invention has been made in view of the above-described problems, and an object thereof is to provide a component supply method and a component transport carriage suitable for shortening the cycle time for component supply and empty box collection.

  The present invention is a parts supply method or a parts transport cart that uses a transport carriage in which a parts box containing supply parts is mounted in a picking field, and is transported to a parts supply station of an assembly stage, and the parts of the transport carriage The box mounting shelf is set to a height that can pass below the component box standby shelf of the picking field and can pass above the component box supply shelf of the component supply station. A component box scraping arm is provided above the rear end and above the front end of the component supply shelf of the component supply station, respectively, and the components are mounted by passing the component box mounting shelf of the transport carriage below the component box standby shelf of the picking field. The parts box on the box standby shelf is scraped off and pushed by the arm and slid on the standby shelf to be transferred from the front end of the standby shelf to the parts box mounting shelf of the transport cart, and the parts supply station By passing above the component supply shelf, and to stop the parts box on the component box mounting rack conveyance carriage by scraping arm of the part-supplying station to cause transfer to the component supply shelf.

  Therefore, in the present invention, the transfer of the parts box from the parts box standby shelf of the picking field to the parts box mounting shelf of the transport carriage, and from the parts box mounting shelf of the transport carriage to the parts supply shelf of the parts supply station, The parts box is scraped off by the forward movement of the carriage and pushed forward by the arm or pushed backward to move it to the shelf that protrudes downward from the shelf.Therefore, automatic transportation and transfer without stopping the transportation carriage. It can be loaded, saving labor without requiring expensive control, and shortening the cycle time. In addition, this leads to an improvement in the conveyance capacity and a reduction in the required number of automatic guided vehicles.

  Hereinafter, a parts transport carriage and a parts supply method of the present invention will be described based on an embodiment. The parts supply method according to the present embodiment will be briefly described first. A parts box in which parts to be assembled to a vehicle passing through each assembly stage of the vehicle assembly line are stored for each vehicle at a picking place. This is a part supply method in which parts boxes for a plurality of units are supplied in batches in order of production. A plurality of parts boxes are transferred to a carrier truck at a picking site, pulled and conveyed by an automated guided vehicle (AGV), and placed in a parts supply station on the upstream line side of a target assembly stage. At the assembly stage, the parts to be assembled to the vehicle are taken out from the parts boxes arranged in the order of production and assembled to the passing vehicle. The empty boxes from which the parts are taken out are collected in an empty box collection station on the downstream line side of the assembly stage, transferred from the empty box collection station to a transport cart, and pulled by an automated guided vehicle (AGV) and transported to a picking place. And recovered.

  FIGS. 1 to 14 show a parts carriage to which the present invention is applied, FIGS. 15 to 18 show parts empty box collection stations, and FIGS. 19 to 21 show parts supply stations provided on the line side, respectively. FIG. First, the parts conveying cart will be described.

  As shown in FIG. 1, the parts transport cart 1 has an upper stage on which a plurality of parts boxes B that house parts that are to be assembled in a target assembly stage in order of production for each vehicle are arranged. The component box mounting shelf 2 and the lower empty box mounting shelf 3 on which the empty box C from which the components have been taken out are mounted are constituted by a carriage 1. The component box mounting shelf 2 is formed into a receiving-side component box mounting shelf 2A that is formed high on one side in the left-right direction of the carriage 1 and a supply-side component box mounting shelf 2B that is also formed low on the other side in the left-right direction. ing. The empty box mounting shelf 3 is also formed into a recovery side empty box mounting shelf 3A formed high on the other side in the left and right direction of the carriage 1 and a return side empty box mounting shelf 3B formed similarly low on the one side in the left and right direction. ing. The parts box mounting shelf 2 and the empty box mounting shelf 3 have shelf heights that are opposite in the left-right direction.

  As shown in FIG. 2 and FIG. 3, the carriage 1 also includes a column 5 that is erected on the front and back of a base frame 4 that includes wheels (caster wheels and driven wheels), and a longitudinal direction that connects the middle portions of the column 5 to each other. A beam 7 and a frame member 7A formed in a U-shape connecting the front and rear columns 5 so as to surround the receiving-side component box mounting shelf 2A and the supply-side component box mounting shelf 2B, respectively, and the collection side A frame member 7B formed in a U-shape that connects the front and rear columns 5 so as to surround the empty box mounting shelf 3A and the return side empty box mounting shelf 3B. These frame members 7A and 7B are formed with different heights depending on the height difference between the component box mounting shelf 2 and the empty box mounting shelf 3 on the left and right sides of the carriage 1. Of these frame members 7A and 7B, a member 7C extending in the front-rear direction in the lateral direction of the vehicle is formed so that the upper surface thereof is higher than the shelf plate 8, and the component box B mounted on the shelf plate 8 is Even if it is shaken by running, it is prevented from dropping off from the side of the carriage 1. A traction rod 9 for connecting to the automatic guided vehicle AGV is provided on the front side of the carriage of the base frame 4.

  Although not shown in the figure, the automatic guided vehicle AGV pulls the transport carriage 1 with a pulling rod 9, and the line side empty box collection station 10 and the parts supply station 20, the empty box return station 30 of the picking place P, and the parts standby. Transport to station 40. The total height of the automatic guided vehicle AGV is formed to be the same height as the base frame 4 lower than the lower return side empty box mounting shelf 3B, and passes below the return side empty box mounting shelf 3B. 31 and 32 are configured not to interfere with each other.

  As shown in FIG. 4, the receiving-side component box mounting shelf 2A and the supply-side component box mounting shelf 2B are configured such that the outer frame 8A on the outer side in the left-right direction of the carriage 1 can swing freely with respect to the frame member 7A. The inner frame 8B on the inner side in the left-right direction is configured to be movable in the up-down direction, and the height position is adjusted in two stages by the lifting mechanism 50 supported by the front-rear direction beam 6. That is, as shown in FIGS. 5 and 6, the inner frame 8B of the left and right shelf boards 8 is lowered on the one hand and the inner frame body on the other hand, as shown in FIGS. 8B is lifted and moved to substantially the same height position, and the left and right shelf boards 8 are adjusted to one of two states, that is, an inclined state inclined at the same angle.

  As shown in FIGS. 7 and 8, the elevating mechanism 50 includes a rail 51 provided so as to be slidable on the longitudinal beam 6 by a roller, and a long lever 53 and a short lever 54 having an angle of 90 degrees or less. And a plurality of deformed L links 52 that are pivotably supported by pivotally supporting the base points of the long and short levers 53 and 54 on the rail 51. The pins provided at the tips of the long levers 53 of the plurality of deformed L links 52 are connected by connecting the inner frame body 8B of the shelf plate 8 of the receiving-side component box mounting shelf 2A, and the short levers 53 of the deformed L links 52 are connected. The pin provided at the tip is configured to support the inner frame body 8B of the shelf board 8 of the supply-side component box mounting shelf 2B from below.

  Accordingly, as shown in FIGS. 7 and 8, the long lever 53 rises slightly upward from the rail 51, and the tip pin of the short lever 54 comes into contact with the upper surface of the rail 51 to prevent further rotation. In this state, the inner frame body of the shelf board 8 of the receiving-side component box mounting shelf 2A that is pin-coupled to the distal end of the long lever 53 is lifted so that the shelf board 8 is in a horizontal state and supported by the distal end pin of the short lever 54 The inner frame body of the shelf board 8 of the supply side component box mounting shelf 2B is also in a state where the height position is lowered so that the shelf board 8 is in a horizontal state.

  In this state, when the rail 51 is moved in the direction of the arrow R, as shown in FIGS. 9 and 10, the lever base point of the deformed L link 52 is moved to the left in the figure by the rail 51, and the deformed L link 52 is moved in the figure. Rotate clockwise. By the rotation of the deformed L link 52, as shown in the figure, the inner frame body of the shelf board 8 of the receiving side component box mounting shelf 2A is lowered, and the shelf board 8 is directed from the outer frame body toward the inner frame body. Inclined downward. At the same time, the pin at the tip of the short lever 54 of the deformed L link 52 is lifted, and the inner frame body of the shelf board 8 of the supply side component box mounting shelf 2B supported by the pin is lifted, and the shelf board 8 is moved to the inner frame body. Is inclined downward toward the outer frame body. As a result, as shown in the figure, the left and right shelf boards 8 are inclined with the same angle, and the component box B mounted on the receiving-side component box mounting shelf 2A is replaced with the supply-side component box mounting shelf. It is possible to slide to 2B.

  An inclined return lever 55 is connected to the front end of the rail 51 via a wire 56 as shown in FIGS. As shown in the drawing, the tilt return lever 55 has a wire 56 connected to the tip of an arm 55B that extends upwardly of a support shaft 55A that is rotatably provided on the front support column 5, and is connected to the support shaft 55A that extends in the left-right direction. The working side 55C swings downward is configured. Therefore, when the operating side 55C is rotated from the front to the rear of the vehicle, the rail 51 is moved forward (arrow F), and the lifting mechanism 50 is operated to operate the component box mounting shelf 2 in a horizontal state.

  A shelf tilt lever 58 is connected to the rear end of the rail 51 via a wire 57. As shown in FIG. 11, the shelf inclination lever is connected to the tip of an arm 58B that extends above a support shaft 58A that is rotatably provided on the rear support column 5, and a support shaft that extends in the left-right direction. The working side 58C swings above 58A. Accordingly, when the operating side 58C is rotated from the front to the rear of the vehicle, the rail 51 is moved rearward (arrow R), and the lifting mechanism 50 is operated to operate the component box mounting shelf 2 in an inclined state.

  As shown in FIG. 3, the receiving side component box mounting shelf 2A and the supply side component box mounting shelf 2B are provided with a plurality of left and right direction rails 60 extending from the outer frame 8A to the inner frame 8B. Each left and right rail 60 is provided with a plurality of left and right rollers 61 so that the component box B can move in the longitudinal direction. Therefore, when the shelf board 8 is inclined as described above, the mounted component box B can be smoothly moved from above the shelf board 8 downward. When the component box B is moved, in order to prevent the component box B located at the front and rear ends and the support column 5 from being caught, the side of the front and rear support column 5 in contact with the component box B (the vehicle inner side) has a cylindrical surface shape. 62. FIG. 12 shows a side view (A) in a horizontal state and a side view in an inclined state of the shelf plate 8 of the receiving side component box mounting shelf 2A (the shelf plate 8 of the collection side empty box mounting shelf 3A has the same configuration). (B).

  A scraping arm 65 is provided on the rear side of the receiving-side component box mounting shelf 2A. The scraping arm 65 is fixed to the column 5 and protrudes in the lateral direction of the vehicle. The scraping arm 65 functions to extrude a plurality of component boxes B arranged in order of production on the component box standby shelves 41 and 42 of the picking field P forward in the traveling direction when passing the carriage 1. The extruded component box B is sequentially transferred from the front end of the component box standby shelves 41 and 42 to the receiving-side component box mounting shelf 2A of the carriage 1. When extruding the component box B, the scraping arm 65 swings the tip slightly forward so that the component box B moves toward the carriage 1 side, that is, to stabilize the posture of the component box B. Has been placed. The mounting height of the scraping arm 65 with respect to the column 5 is preferably fixed to the column 5 so that it can be adjusted up and down according to the height of the component box B to be mounted.

  Further, as shown in FIG. 3, the supply-side component box mounting shelf 2 </ b> B positioned below is provided with a plurality of front-rear rails 63 arranged in the front-rear direction so as to be orthogonal to the left-right rail 60 below the left-right rail 60. Is arranged. When the shelf 8 is in a horizontal state, the front-rear rail 63 projects from the front end of the left-right roller 61 between the left-right rails 60 so that the component box B is moved in the front-rear direction of the carriage 1. A plurality of front and rear direction rollers 64 that can be moved to each other are arranged.

  For this reason, as shown in FIG. 13A, in a state where the shelf board 8 is horizontal and the front-rear direction roller 64 is enabled (the function of the left-right direction roller 61 is disabled), When an external force is applied to the mounted component box B, the mounted component box B can be easily moved rearward of the vehicle by the front-rear direction roller 64. When the inner frame of the shelf board 8 is lifted by the elevating mechanism 50 and the shelf board 8 is inclined, as shown in FIG. 13B, the left and right rails 60 and the left and right rollers are connected to the front and rear rails. 63 and the front-rear direction roller 64 move upward (the left-right direction roller 61 is enabled), so the function of the front-rear direction roller 64 is disabled.

  Further, as shown in FIG. 3, a sliding plate 66 extending obliquely downward toward the rear is provided on the frame member 7A located on the rear side of the vehicle among the frame members 7A surrounding the supply-side component box mounting shelf 2B located on the lower side. Is formed. The sliding plate 66 smoothly moves the component box B when supplying the component box B mounted on the supply-side component box mounting shelf 2B to the component supply station 20 on the line side. The sliding plate 66 is preferably provided so as to be swingable in the vertical direction so as not to interfere with the component box receiving shelf 27 of the component supply station 20.

  As shown in FIG. 14, the collection-side empty box mounting shelf 3A and the return-side empty box mounting shelf 3B also have shelf plates 8 of the receiving-side component box mounting shelf 2A and the supply-side component box mounting shelf 2B. The left and right rails 60 provided with the left and right direction rollers 61 are arranged so as to be passed between the inner frame body and the outer frame body, and the return side empty box mounting shelf 3B is similar to the supply side component box mounting shelf 2B. A front-rear rail 63 having a front-rear roller 64 is disposed.

  The inner frame 8B on the inner side in the left-right direction of the collection-side empty box mounting shelf 3A is connected to the inner frame 8B of the receiving-side component box mounting shelf 2A by a vertical link 67A as shown in FIGS. The inner frame 8B of the return-side empty box mounting shelf 3B is connected to the inner frame 8B of the supply-side component box mounting shelf 2B by another vertical link 67B. These vertical links 67A and 67B are arranged at both ends in the vehicle front-rear direction so that there is no hindrance to the movement of the empty box C from the collection side empty box mounting shelf 3A of the empty box C to the return side empty box mounting shelf 3B. Has been placed. For this reason, when the shelf board 8 of the component box mounting shelf 2 is positioned in the horizontal state, the shelf board 8 of the empty box mounting shelf 3 is also in the horizontal state, and when the shelf board 8 of the component box mounting shelf 2 is in the inclined state, The shelf board 8 of the empty box mounting shelf 3 is also tilted, and both are configured to be linked.

  A scraping arm 68 is provided on the rear side of the collection side empty box mounting shelf 3A. The scraping arm 68 is fixed to the column 5 and protrudes in the lateral direction of the vehicle. The scraping arm 68 functions to push the plurality of empty boxes C collected on the empty box collection shelf 17 of the empty box collection station 10 forward in the traveling direction when passing the carriage 1. The extruded empty box C is sequentially transferred from the front end of the empty box collection shelf 17 to the collection side empty box mounting shelf 3A of the carriage 1. When the empty box C is pushed out, the scraping arm 68 swings the tip slightly forward so that the empty box C moves toward the carriage 1 side, that is, the posture of the empty box C is stabilized. Are arranged. The mounting height of the scraping arm 68 with respect to the column 5 is preferably fixed to the column 5 so that it can be adjusted up and down according to the height of the empty box C to be mounted.

  In addition, although not shown, a sliding plate extending obliquely downward toward the rear is formed on the frame member 7B positioned on the rear side of the vehicle in the frame member 7B surrounding the return side empty box mounting shelf 3B positioned below. It is desirable. The sliding plate smoothly moves the empty box C to the empty box return shelves 31 and 32 when returning the empty box C mounted on the return side empty box mounting shelf 3B to the empty box loading place of the picking field P. Yes. This sliding plate is preferably provided so as to be swingable in the vertical direction so as not to interfere with the empty box return shelves 31 and 32 at the empty box input place.

  As shown in FIGS. 15 to 18, the empty box collection station 10 collects and collects the empty boxes C that are empty after the parts are taken out by the assembly stage on the line side of the assembly line. At the stage where the empty boxes C are gathered to a preset quantity, the empty boxes C collected at the delivery position to the transport carriage 1 are positioned and delivered to the transport carriage 1 when the transport carriage 1 passes.

  Specifically, an empty box stocker 12 provided on the frame 11 so as to be slidable between a loading position (see FIGS. 16 to 18) and a delivery standby position (see FIGS. 15A and 15B), and an empty box stocker 12 are provided. And an empty box collection line 13 for transferring the empty box C from the assembly stage to the empty box stocker 12 in the state of being in the loading position. In the illustrated example, the empty box stocker 12 includes two sets of rails 14 with rollers as empty box collection shelves 17 for collecting a plurality (five) of empty boxes C. As shown in FIG. The empty box C carried by the line 13 is accommodated on the rail 14 at the loading position. As shown in FIG. 17, when a set of rails 14 is filled with empty boxes C, the empty boxes C to be carried are accommodated by changing the accommodated rails 14. As shown in FIG. 18, when the two sets of rails 14 are filled with empty boxes C, they slide and move to the delivery standby position (see FIG. 15).

  At the delivery standby position, as shown in FIG. 15, the empty box C accommodated in the rail 14 protrudes from the frame 11 together with the rail 14, and the rail is at a height position that does not interfere with the collection-side empty box mounting shelf 3 </ b> A of the transport carriage 1. Position 14 and wait for empty box recovery. During standby, the empty box C carried by the empty box recovery line 13 is stopped on the empty box recovery line 13 until the empty box stocker 12 returns the empty box C to the loading position after recovering the empty box C. It will be in the state. As shown in FIG. 15, when the transport carriage 1 enters the collection position at the standby position, the collection-side empty box mounting shelf 3 </ b> A of the transport carriage 1 passes under the rail 14 and the transport carriage 1. The scraping arm 68 provided on the rear support column 5 abuts against the empty box C on the rail 14 to push the empty box C in the traveling direction of the transport carriage 1, and the extruded empty box C is transported from the end of the rail 14 to the transport carriage. 1 are sequentially dropped onto the collection side empty box mounting shelf 3A and collected by the transport carriage 1. When the empty box C is recovered and the empty box stocker 12 returns to the loading position, the empty boxes C on the empty box recovery line 13 are again accumulated on the rail 14.

  As shown in FIGS. 19 to 21, the component supply station 20 receives and accumulates the component boxes B transported by the transport carriage 1 on the line side of the assembly line, and passes the accumulated component boxes B through the supply line 23. It is configured to supply sequentially to the assembly stage.

  Specifically, the component box stocker 22 provided on the frame 21 so as to be slidable between a loading position (see FIGS. 20 and 21) and a delivery standby position (see FIG. 19), and the component box stocker 22 are in the loading position. And a supply line 23 for transferring the component box B accumulated in the positioned state to the assembly stage. In the illustrated example, the component box stocker 22 includes two sets of rails 24 with rollers as a component box receiving shelf 27 that accumulates a plurality of (five) component boxes B. As shown in FIG. While the component box B exists, one end of the rail 24 is raised by the cylinder 25 and the component box B is supplied to the assembly stage via the supply line 23, and the component box B accumulated on the rail 24 is lost. 21, the rail 24 is changed, the end of the rail 24 is again raised by the cylinder 25, and the component box B is supplied to the assembly stage via the supply line 23. When there is no component box B accumulated on any rail 24, as shown in FIG. 19, it slides and moves to the delivery standby position.

  At the delivery standby position, the rail 24 protrudes from the frame 21 at a slightly lower height that does not interfere with the supply-side component box mounting shelf 2B of the transport carriage 1 and stands by for receiving the component box. In the standby position, as shown in FIG. 19, when the transport carriage 1 enters the supply position, the supply-side component box mounting shelf 2 </ b> B of the transport carriage 1 passes above the rail 24 and the parts box stocker 22. The scraping arm 26 provided on the abutting portion contacts the front surface of the component box B on the supply-side component box mounting shelf 2B to stop the movement of the component box B, and pushes it backward to the transport carriage 1. The supply-side component box mounting shelf 2B is smoothly extruded from the supply-side component box mounting shelf 2B by the advance of the transport carriage 1 because the front-rear direction roller 64 supports the component box B, and the component box B is supplied to the supply-side component It is guided by the sliding plate 66 from the end of the box mounting shelf 2B and sequentially falls onto the rail 24 of the component box stocker 22, and is accumulated on the rail 24 of the component box stocker 22. When the parts box B is accumulated and the parts box stocker 22 returns to the loading position, the parts box B is supplied onto the supply line 23 again.

  FIG. 22 shows an example of a layout of a part supply device in this embodiment to a part of a vehicle assembly production line and the production line. In the vehicle assembly production line shown in FIG. 22, two assembly stages (for example, left and right front door assembly and left and right rear door assembly) are shown, and each assembly stage has a component supply station upstream thereof. On the other hand, an empty box collection station 10 from which parts are extracted is arranged downstream of each assembly stage. On the other hand, in the picking field P, for example, parts such as right and left front doors are stored in the left and right parts box standby shelves 41 in a permutation order for each vehicle in the order of production. Are arranged, and the empty box return shelves 31 of the empty boxes C are also arranged for the left and right sides, respectively. On the other hand, in the other picking place P, for example, parts boxes such as right and left rear doors are stored in the left and right parts box standby shelves 42 in a permutation order for each vehicle in the order of production. B are arranged, and the empty box return shelves 32 of the empty boxes C are also arranged for the left and right sides, respectively.

  Taking the production line having the above-described configuration as an example, the procedure shown in FIG. 23 and the operations shown in FIGS. 24 to 41 regarding the supply method of supplying parts from the picking site P to the production line using the transport carriage 1 described above. Based on In the illustrated example, empty box collection and component supply are performed on the left side of one assembly stage (for example, rear door assembly) of the assembly line, and then component supply and empty box recovery are performed on the right side opposite to the assembly stage. I am doing so. In FIG. 23, steps S2 to S13 are empty box collection and part supply execution to the left side, and steps S14 to S24 are execution of right part supply and empty box collection.

  As shown in FIG. 24, a plurality of parts boxes B stored in the left and right parts box mounting shelves 2 in a permutation order for each vehicle in order of production are mounted on the transport cart 1 from the picking field P. Nothing is mounted on the left and right empty box mounting shelves 3. On the supply side component box mounting shelf 2B on the left side (right side in the illustrated state) of the transport carriage 1, a plurality of parts boxes B for the left side of the assembly stage are mounted, and the receiving side component on the right side (left side in the illustrated state). A plurality of component boxes B for the right side of the assembly stage are mounted on the box mounting shelf 2A.

  First, it is towed by AGV to move the transport carriage 1 along the track to the empty box collection station 10 of the assembly stage (step S1), and when it reaches the front of the empty box collection station 10, the approach is arranged. It is determined whether or not the entry permission by the indicator SG1 has been issued (step S2).

  When the entry permission is given, as shown in FIG. 25, the AGV advances the lower side of the empty box collection shelf 17 of the empty box collection station 10 by the AGV so that the collection side empty box mounting shelf 3A of the transport carriage 1 passes through (step). S3) As shown in FIGS. 26 and 27, when the transport carriage 1 is further advanced by AGV, the empty box scraping arm 68 protruding from the column 5 to the rear of the recovery side empty box mounting shelf 3A The empty box C that hits the empty box C placed on the empty box collection shelf 17 of the station 10 (step S4), pushes these empty boxes C in the traveling direction of the transport carriage 1, and falls downward from the tip of the empty box collection shelf 17 Are sequentially transferred onto the collection-side empty box mounting shelf 3A that urges forward from the lower side in the traveling direction. As the transport cart 1 advances, all the empty boxes C on the empty box collection shelf 17 can be transferred and collected on the collection-side empty box mounting shelf 3A (step S5). Thereafter, the transport carriage 1 is advanced to the component supply station 20 of the assembly stage (step S6).

  When the transport carriage 1 advances to the parts supply station 20, as shown in FIGS. 28 and 29, the parts box receiving shelf 27 of the parts supply station 20 enters the lower part of the supply side parts box mounting shelf 2B of the transport carriage 1, The operation side of the tilt return lever 55 of the transport carriage 1 is pushed backward, and then the supply-side component box mounting shelf 2B of the transport carriage 1 passes above the parts box receiving shelf 27 of the parts supply station 20 (step S7). The backward movement of the operating side 55C of the tilt return lever 55 of the transport carriage 1 is to operate the parts box mounting shelf 2 in a horizontal state by the lifting mechanism 50, but the parts box mounting shelf 2 of the transport carriage 1 is Since it is already in the horizontal state, the operation is idle. When the transport carriage 1 is further advanced, a scraping arm disposed above the rear end of the component box receiving shelf 27 of the component supply station 20 in front of the component box B mounted on the supply-side component box mounting shelf 2B. 26 abuts to prevent the mounted component box B from moving forward (step S8).

  Since the transport cart 1 is continuously advanced by AGV, the component box B on the supply-side component box mounting shelf 2B is guided by the front-rear direction roller 64 provided on the shelf board 8 and behind the transport cart 1. The sheet is sent and slid down on the sliding plate 66, and is sequentially transferred onto the component box receiving shelf 27 of the component supply station 20 that protrudes from below the supply side component box mounting shelf 2B. As shown in FIGS. 30 and 31, the component box B on the supply-side component box mounting shelf 2 </ b> B passes through the component box receiving shelf 27 of the component supplying station 20, and then the component box receiving shelf 27 of the component supplying station 20. Is completed (step S9).

  As shown in FIGS. 32 and 33, a shelf inclined hook 28 is attached to a lower end portion of the component box receiving shelf 27 of the component supply station 20 at a position corresponding to the operating side 58C of the shelf inclined arm 58 of the carriage 1. Therefore, when the rear portion of the transport carriage 1 passes through the end of the parts box receiving shelf 27 of the parts supply station 20, the operating side 58C of the shelf inclination arm 58 of the carriage 1 is pushed down (step S10), and the lifting mechanism 50 Thus, the parts box mounting shelf 2 and the empty box mounting shelf 3 are simultaneously inclined (step S11).

  That is, in the lifting mechanism 50, when the shelf tilt lever 58 is pushed down, the rail 51 is pulled in the R direction by the wire 57 connected to the lever 58 as shown in FIGS. The inner frame of the supply-side component box mounting shelf 2B placed on the pin of the short lever 54 of the deformed L link 52 at the same time in the direction of lowering the inner frame of the receiving-side component box mounting shelf 2A that is pin-coupled to the long lever 53 Move the body in the ascending direction.

  At this time, although the component box B is mounted on the receiving-side component box mounting shelf 2A and gravity is applied, the supply-side component box mounting shelf 2B riding on the pin of the short lever 54 of the modified L link is Since the supply of the box B is completed and it is light in the vacant seat state, it can be easily lifted. As a result, the receiving-side component box mounting shelf 2A and the supply-side component box mounting shelf 2B are inclined, and the component box B is transferred to the opposite-side component box mounting shelf as shown in FIGS. .

  The lower collection-side empty box mounting shelf 3A and the return-side empty box mounting shelf 3B are connected to the component box mounting shelf 2 through the vertical wires 67A and 67B, respectively. The tilt direction is reversed.

  As shown in FIGS. 34 and 35, the component box B (for the right side) on the receiving-side component box mounting shelf 2 </ b> A, which is the upper stage of the transport carriage 1, rides on the horizontal roller 61 of the shelf board 8 and is the lower supply side. It slides to the parts box mounting shelf 2B, and the empty box C on the recovery side empty box mounting shelf 3A, which is the upper stage, rides on the horizontal roller 61 of the shelf board 8 and slides to the return side empty box mounting shelf 3B that is the lower stage. (Step S12).

  The transport cart 1 keeps running while being pulled by an automated guided vehicle (AGV) with the component box mounting shelf 2 and the empty box mounting shelf 3 tilted, and turns to the opposite side of the assembly line to supply the next component box. It arrives at the approach indicator SG2 before the parts box receiving shelf 27 of the station 20 (step S13). Then, it is determined whether or not the entry permission by the entry indicator SG2 arranged in front of the component supply station 20 has been issued.

  When the entry permission by the entry indicator SG2 is given, the conveyance carriage 1 is advanced by AGV, and the parts box receiving shelf 27 of the parts supply station 20 enters the lower part of the supply-side parts box mounting shelf 2B of the conveyance carriage 1, and the conveyance carriage The operating side of the 1 tilt return lever 55 is pushed backward (step S15). The lifting mechanism 50 is actuated by the backward movement of the operating side 55C of the tilt return lever 55 of the transport carriage 1, and the parts box mounting shelf 2 is returned to the horizontal state as shown in FIGS. Similarly, the lower empty box mounting shelf 3 connected by 67A and 67B returns to the horizontal state (step S16).

  That is, when the tilt return lever 55 is pushed down, the lifting mechanism 50 is pulled by the wire 56 connected to the tilt return lever 55 in the F direction, and is pinned to the long lever 53 of the deformed L link 52. A force is applied in the direction of lifting the coupled supply-side component box mounting shelf 2B and simultaneously in the direction of lowering the supply-side component box mounting shelf 2B mounted on the pin of the short lever 54 of the deformed L link 52.

  At this time, the component box B is mounted on the supply-side component box mounting shelf 2B, and the gravity is greatly applied. However, since the receiving-side component box mounting shelf 2A is light and empty, the long lever 53 of the deformed L link 52 is used. The receiving-side component box mounting shelf 2A that is pin-coupled to is easily lifted.

  As a result, the left and right component box mounting shelves 2 are in the horizontal state, and the component box B that is in the inclined state is also returned to the horizontal state. The lower recovery box empty shelf 3A and the return empty box mounting shelf 3B are connected to the left and right component box mounting shelves 2 by crossing the upper and lower wires 67A and 67B, respectively. It operates simultaneously with 2 and returns to the horizontal direction. As the transport cart 1 advances, the supply-side component box mounting shelf 2B of the transport cart 1 passes above the component box receiving shelf 27 of the component supply station 20 (step S17).

  When the transport carriage 1 further advances, a scraping arm 26 disposed above the rear end of the component box receiving shelf 27 of the component supply station 20 in front of the component box B mounted on the supply side component box mounting shelf 2B. Abut and prevent the mounted component box B from moving forward (step S18).

  Since the transport cart 1 is continuously advanced by AGV, the component box B on the supply-side component box mounting shelf 2B is guided by the front-rear direction roller 64 provided on the shelf board 8 and behind the transport cart 1. The sheet is sent and slid down on the sliding plate 66, and is sequentially transferred onto the component box receiving shelf 27 of the component supply station 20 that protrudes from below the supply side component box mounting shelf 2B. When the component box B on the supply-side component box mounting shelf 2B passes through the component box receiving shelf 27 of the component supplying station 20, the supply to the component box receiving shelf 27 of the component supplying station 20 is completed (step S19).

  The bottom end of the component box receiving shelf 27 of the component supply station 20 is not attached with a shelf inclination hook at a position corresponding to the shelf inclination arm 58 of the transport carriage 1, and the shelf inclination of the carriage 1 is completed after the supply of the parts box is completed. The arm 58 is not pushed down. For this reason, the left and right shelves 2 on the upper stage of the carriage 1 and the left and right shelves 3 on the lower stage of the carriage 1 pass through the component supply station 20 in a horizontal state.

  As shown in FIGS. 38 and 39, the left and right parts box mounting shelves 2 of the transport carriage 1 after passing the parts supply station 20 have been supplied with the parts box B and are in an empty seat state. The return side empty box mounting shelf 3B on the lower right side of 1 has an empty box C, and the recovery side empty box mounting shelf 3A on the lower left side is in an empty seat state. The transport carriage 1 is pulled by an automated guided vehicle (AGV) and transported to the last empty box collection station 10 (step S20).

  When the transport cart 1 reaches the empty box collection station 10, as shown in FIGS. 38 and 39, the lower side of the empty box collection shelf 17 of the empty box collection station 10 is placed on the collection side empty box mounting shelf 3A of the transport cart 1. (Step S21). When the transport carriage 1 is further advanced by the AGV, an empty box scraping arm 68 protruding from the support column 5 on the rear side of the recovery side empty box mounting shelf 3A is placed on the empty box recovery shelf 17 of the empty box recovery station 10. Upon hitting the empty box C (step S22), these empty boxes C are pushed out in the traveling direction of the transport carriage 1, and the empty box C falling downward from the tip of the empty box collection shelf 17 is pushed forward from the lower side in the moving direction. It is sequentially transferred onto the collection side empty box mounting shelf 3A. As shown in FIGS. 40 and 41, all the empty boxes C on the empty box collection shelf can be transferred and collected on the collection side empty box mounting shelf 3A as the transport carriage 1 advances ( Step S23).

  After passing, the parts box mounting shelves 2 on the upper left and right sides of the transport carriage 1 have completed the supply of the parts box B and are in an empty seat state, and empty boxes C are placed on the left and right empty box mounting shelves 3 of the transport carriage 1. It is in a mounted state and is transported to the parts box mounting place (picking field P) (step S24).

  The above is a description of specific examples of the component supply method to the left and right of one assembly stage and the empty box collection method using the transport carriage 1 according to the present embodiment, but component supply to the left and right of another assembly stage. It is equally applicable to the collection of empty boxes and empty boxes, and is equally applicable to the supply of different parts to two assembly stages (for example, the assembly stages arranged before and after the line shown in the figure) and empty box collection. is there. That is, it can be widely applied to two types of component supply and empty box collection.

  In the specific examples of the component supply method and the empty box collection method described above, the order in which the component box B is supplied after the empty box C is collected in the previous stage and the empty box C is collected after the component box B is supplied in the latter stage. However, this is because the transport carriage 1 is advanced from the downstream to the upstream of the assembly line in the former stage, and the transport carriage 1 is advanced from the upstream to the downstream of the assembly line in the rear stage. Any of the parts box supply and the empty box recovery may be performed first as necessary.

  Next, an empty box return and component box mounting method in one picking field P shown in FIG. 22 will be described based on the procedure shown in FIG. 42 and the operations shown in FIGS. 43 to 52. In the illustrated example, the process of mounting the component box is performed twice after the empty box is returned. 42, step S32 to step S34 and step S46 to step S48 are execution of empty box return, and step S36 to step S38 and step S50 to step S52 are execution of component box mounting.

  As shown in FIG. 43, the left and right component box mounting shelves 2 are in an empty seat state in the transport cart 1 toward the picking field P, and the left and right empty box mounting shelves 3 have a plurality of empty boxes C. It is installed.

  First, it is towed by the AGV to move the transport carriage 1 along the track to the empty box return station 30 of the picking field P (step S30), and when it reaches the front of the empty box return station 30, it is arranged. It is determined whether or not entry permission by the entry indicator SG3 has been issued (step S31).

  When the entry permission is given, as shown in FIG. 43, the upper side of the empty box return shelf 31 of the empty box return station 30 is advanced by AGV so that the return side empty box mounting shelf 3B of the transport carriage 1 passes (step S32). ) When the transport carriage 1 is further advanced by AGV, the empty box scraping arm 33 disposed behind the empty box return shelf 31 is an empty box placed on the return side empty box mounting shelf 3B of the transport carriage 1. It hits the front side of C (step S33), and the progress of these empty boxes C is prevented. Since the transport carriage 1 is advanced by the AGV, only the return side empty box mounting shelf 3B moves forward, and the empty box C falls downward from the back side of the return side empty box mounting shelf 3B, and the empty space located below the return side empty box mounting shelf 3B. It is sequentially transferred onto the empty box return shelf 31 of the box return station 30. All the empty boxes C on the return-side empty box mounting shelf 3B can be transferred onto the empty box return shelf 31 and collected as the transport cart 1 advances (step S34). Thereafter, the carriage 1 is advanced to the parts standby station 40 of the picking field P (step S35).

  As shown in FIG. 44, in the parts standby station 40, the receiving side part box mounting shelf 2A on the upper stage of the transport carriage 1 is passed under the parts box standby shelf 41 in the parts standby station 40 (step S36). The component box B on the component box standby shelf 41 is pushed forward by the component box scraping arm 65 at the rear end of the receiving-side component box mounting shelf 2A (step S37) and conveyed from the front end of the component box standby shelf 41. The parts box B is mounted on the receiving side parts box mounting shelf 2A of the carriage 1 while being scraped off (step S38).

  As shown in FIG. 45, a shelf inclination hook 42 is disposed at the end of the component standby station 40. After mounting the component box, the shelf inclination arm 58 is pushed down (step S39) to operate the lifting device 50. As shown in FIG. 46, the left and right sides of the upper part box mounting shelf 2 and the lower left and right empty box mounting shelves are moved up and down to be inclined (step S40). As shown in FIG. 47, the component box B on the receiving-side component box mounting shelf 2A of the component box mounting shelf 2 of the transport carriage 1 moves to the supply-side component box mounting shelf 2B, and the empty space on the collection side of the empty box mounting shelf 3 The empty box C on the box mounting shelf 3A moves to the return side empty box mounting shelf 3B (step S41). After that, the component box mounting shelf 2 and the empty box mounting shelf 3 are transported to the next empty box return station 30 of the picking place P while keeping the tilted state (step S42).

  When reaching the next empty box return station 30, it is determined whether or not the entry permission by the arranged approach indicator SG4 is given (step S43). When entry permission is given, the transport carriage 1 is advanced by AGV. In the next empty box return station 30, as shown in FIG. 48, an inclined return hook 34 is arranged at the front end of the empty box return shelf 31, and the inclined return arm 55 of the transport carriage 1 is pushed down by this inclined return hook 34. (Step S44), the lifting device 50 is operated to return the component box mounting shelf 2 and the empty box mounting shelf 3 to the horizontal state (step S45).

  When the AGV advances the upper side of the empty box return shelf 31 of the empty box return station 30 so that the return side empty box mounting shelf 3B of the transfer carriage 1 passes (step S46), and further advances the transfer carriage 1 by the AGV, The empty box scraping arm 35 arranged behind the empty box return shelf 31 hits the front side of the empty box C placed on the return side empty box mounting shelf 3B of the transport carriage 1 (step S47). Stop the progression of C. Since the transport carriage 1 is advancing by AGV, the return side empty box mounting shelf 3B moves forward, and the empty box C falls downward from the rear side of the return side empty box mounting shelf 3B, and the empty box located below the return box. It is sequentially transferred onto the empty box return shelf 31 of the return station 30. As shown in FIG. 49, all the empty boxes C on the return-side empty box mounting shelf 3B can be transferred onto the empty box return shelf 31 and collected as the transport carriage 1 advances (step S48). Thereafter, the transport carriage 1 is advanced to the parts standby station 40 of the picking place P (step S49).

  In the parts standby station 40, as shown in FIG. 50, the receiving side part box mounting shelf 2A in the upper stage of the transport carriage 1 is passed under the parts box standby shelf 41 in the parts standby station 40 (step S50). The component box B on the component box standby shelf 41 is pushed forward by the component box scraping arm 65 at the rear end of the receiving-side component box mounting shelf 2A (step S51), as shown in FIG. The component box B is mounted while being scraped off from the front end of the standby shelf 41 onto the receiving-side component box mounting shelf 2A of the transport carriage 1 (step S52).

  As shown in FIG. 52, the parts box B is mounted on the receiving side shelf 2A and the supply side shelf 2B of the parts box mounting shelf 2 of the transport carriage 1, respectively, and the recovery side shelf 3A and the return side shelf of the empty box mounting shelf 3 are mounted. In 3B, the empty box C is returned to the empty seat state. The vehicle is towed on the track with an automated guided vehicle (AGV) and headed to the assembly stage intended for the assembly line (step S53).

  The above is a description of specific examples of the component mounting method and empty box return method in one picking field P using the transport carriage 1 according to the present embodiment. The same applies to box return.

  Further, in the specific examples of the component mounting method and the empty box return method described above, the parts box B is implemented in the order in which the parts box B is mounted after the empty box is returned in both the preceding stage and the subsequent stage. It may return the empty box after mounting, and in the subsequent stage, the parts box may be mounted after the empty box has been returned. The order of returning the empty box and mounting the parts box may be changed.

  Moreover, in the said embodiment, the combination of empty box collection | recovery to the collection | recovery side empty box mounting shelf 3A and component box supply from the supply side component box mounting shelf 2B was complete | finished as timing which operates the raising / lowering apparatus 50 of the conveyance trolley | bogie 1. At this stage, the component box mounting shelf 2 and the empty box mounting shelf 3 are inclined by the shelf inclination lever 58, and the component box B is moved from the receiving side component box mounting shelf 2A to the supply side component box mounting shelf 2B to supply the supply shelf 2B. While the empty box C is moved from the collection side empty box mounting shelf 3A to the return side empty box mounting shelf 3B, the recovery side empty box mounting shelf 3A can be made empty and a new empty box C can be recovered. Like to do. Then, when the movement of the component box B and the empty box C is completed, for example, when entering the next empty box collection station 10 or the component supply station 20, the component box mounting shelf 2 and the The empty box mounting shelf 3 is returned to the horizontal state again. For this reason, supply of two types of parts boxes B and recovery of empty boxes C can be executed smoothly.

  Also in the picking field P, the shelf tilt lever 58 is reached when the return of the empty box C mounted on the return-side empty box mounting shelf 3B and the mounting of the component box B on the receiving-side component box mounting shelf 2A are completed. The component box mounting shelf 2 and the empty box mounting shelf 3 are inclined to move the component box B from the receiving-side component box mounting shelf 2A to the supply-side component box mounting shelf 2B, and the parts are transferred to the receiving-side component box mounting shelf 2A. While the box B can be supplied, the empty box C can be returned to the return side empty box mounting shelf 3B by moving the empty box C from the collection side empty box mounting shelf 3A to the return side empty box mounting shelf 3B. Like to do. Then, at the stage when the movement of these parts box B and empty box C is completed, for example, when entering the next empty box return station 30 or parts standby station 40, the inclination return lever 55 causes the parts box mounting shelf 2 and The empty box mounting shelf 3 is returned to the horizontal state again. As described above, the mounting of the two types of component boxes B and the return of the empty box C can be executed smoothly.

  In the present embodiment, the following effects can be achieved.

  (A) A parts supply method or a parts transport carriage 1 that uses a transport carriage 1 that mounts a parts box B containing supply parts in a picking field P, and transports the parts to a parts supply station 20 of an assembly stage. The parts box mounting shelf 2 of the transport carriage 1 is set to a height that can pass below the parts box standby shelf 41 of the picking field P and can pass above the parts box receiving shelf 27 of the parts supply station 20. A component box scraping arm 26 is provided above the rear end of the component cart mounting shelf 2 of the transport carriage 1 and above the front end of the component receiving shelf 27 of the component supply station 20, respectively. 2 is passed under the parts box standby shelf 41 of the picking place P, and the parts box B on the parts box standby shelf 41 is scraped off and pushed by the arm 65 while sliding on the standby shelf 41. The transfer carriage 1 is transferred from the front end of the machine shelf 41 to the component box mounting shelf 2 of the conveyance carriage 1 and passed over the component receiving shelf 27 of the component supply station 20, so that the conveyance carriage 1 is removed by the scraping arm 26 of the component supply station 20. The component box B is stopped on the component box mounting shelf 2 and transferred to the component receiving shelf 27.

  Therefore, the parts box from the parts box standby shelf 41 of the picking place P to the parts box mounting shelf 2 of the transport carriage 1 and from the parts box mounting shelf 2 of the transportation carriage 1 to the parts box receiving shelf 27 of the parts supply station 20 The transfer of B is moved from one shelf to the other shelf by scraping the parts box B by the forward traveling of the transport carriage 1 and pushing it forward or backward by the arms 65 and 26. Can be carried out automatically, and can be automatically transferred and transferred without stopping the carriage 1, saving labor without requiring expensive control, and shortening the cycle time. In addition, this leads to an improvement in the conveyance capacity and a reduction in the required number of automatic guided vehicles.

  (A) When the parts cart B containing the supply parts is mounted in the picking field P and used for the transport car 1 to be transported to the parts supply station 20 of the assembly stage, the transport car 1 Component box mounting shelves 2 disposed on the left and right sides of the carriage 1 that are set to a height that can pass below the component box standby shelf 41 and that can pass above the component box receiving shelf 27 of the component supply station 20; The transfer mechanism 50 for transferring the component box B mounted on one component box mounting shelf 2A to the other component box mounting shelf 2B, and the rear end of the component cart mounting shelf 2A of the transport carriage 1 are arranged above the rear end. The component box scraping means 65 is provided, and the component box B on the component box standby shelf 41 is passed by passing one component box mounting shelf 2A of the transport carriage 1 below the component box standby shelf 41 of the picking place P. Scratch Ah It is moved by 65 and is slid on the standby shelf 41 while being transferred from the front end of the standby shelf 41 to one of the component box mounting shelves 2A of the transport carriage 1, and then by the transfer means 50 on one of the component box mounting shelves 2A. The parts box B is transferred to the other parts box mounting shelf 2B, and the parts box mounting shelf 2A of the transport cart 1 is passed below the parts box waiting shelf 41 of the picking place P to pass the parts box waiting shelf 41. The upper part box B is scraped off and pushed by the arm 65 to slide on the standby shelf 41 while being transferred from the front end of the standby shelf 41 to one of the component box mounting shelves 2A of the transport carriage 1 and the other part of the transport carriage 1 By passing the box mounting shelf 2B over the component receiving shelf 27 of the component supplying station 20, the scraping means 26 of the component supplying station 20 stops the component box B on the other component box mounting shelf 2B of the transport carriage 1. Then, after the component box B is transferred from one component box mounting shelf 2A to the other component box mounting shelf 2B by the transfer device 50, the other of the transport carriage 1 is transferred. The component box mounting shelf 2B is passed over the component receiving shelf 27 of the component supply station 20, so that the scraping means 26 of the component supply station 20 causes the component box B on the other component box mounting shelf 2B of the transport carriage 1 to move. Was stopped and transferred to the parts receiving shelf 27.

  For this reason, different types of parts boxes B can be sorted and loaded on the left and right sides, and can be supplied to a plurality of assembly stages by a single parts transport carriage 1, reducing the cycle time of parts supply and transporting capacity. This leads to an improvement in the number of automated guided vehicles and a reduction in the number of automated guided vehicles.

  (C) A transport cart that mounts an empty box C from which a part has been taken out from a parts box B containing supply parts in an empty box collection station 10 of the assembly stage, and transports and returns it to an empty box return station 30 of the picking site P. When the transport cart 1 is used, the transport cart 1 can pass below the empty box collection shelf 17 of the empty box collection station 10 and can pass above the empty box return shelf 31 of the picking place P. The empty box mounting shelves 3 arranged on the left and right of the set cart 1, the transfer mechanism 50 for transferring the empty box C mounted on one empty box mounting shelf 3A to the other empty box mounting shelf 3B, An empty box scraping means 68 disposed above the rear end of one empty box mounting shelf 3A of the transport carriage 1, and one empty box mounting shelf 3A of the transport carriage 1 is used as an empty box recovery station 10 By passing below the shelf 17 The empty box C on the box collection shelf 17 is scraped off and pushed by the arm 68 to be slid on the empty box collection shelf 17 and transferred from the front end of the empty box collection shelf 17 to one empty box mounting shelf 3A of the transport carriage 1, and then The transfer means 50 transfers the empty box C on one empty box mounting shelf 3A to the other empty box mounting shelf 3B, and transfers one empty box mounting shelf 3A of the transport carriage 1 to another empty box collection station 10. By passing under the empty box collection shelf 17, the empty box C on the empty box collection shelf 17 is scraped off and pushed by the arm 68 to slide on the empty box collection shelf 17, while one side of the transport cart 1 is moved from the front end of the empty box collection shelf 17. Is transferred to the empty box mounting shelf 3A, and the other empty box mounting shelf 3B of the transport carriage 1 is passed over the empty box return shelf 31 of the picking field P, so that the scraping means 33 of the picking field P removes it. The other empty box mounting shelf 3 of the transport cart 1 The empty box C was stopped and transferred to the empty box return shelf 33, and then the empty box C was transferred from one empty box-mounted shelf 3A to the other empty box-mounted shelf 3B by the transfer device 50. Later, by passing the other empty box mounting shelf 3B of the transport carriage 1 over another empty box return shelf 31 of the picking place P, the scraping means 33 of the picking place P is used to scrape the other empty box of the transport carriage 1. The empty box C was stopped on the box mounting shelf 3B and transferred to the empty box return shelf 31.

  For this reason, different types of empty boxes C can be sorted and loaded on the left and right sides, and the empty boxes C can be collected from each of the plurality of assembly stages by one component transport carriage 1, thereby reducing the cycle time of empty box collection. It can be shortened, leading to improved transport capacity and a reduction in the number of automated guided vehicles.

  (D) The parts transport cart 1 includes parts box mounting shelves 2 on the left and right of the upper stage of the carriage 1 and empty box mounting shelves 3 on the left and right of the lower stage of the truck 1, and the receiving side parts box mounting shelves as one side. By providing a collection-side empty box mounting shelf 3A on one side opposite to the left and right direction of 2A, different types of component boxes B can be separately mounted on the picking site P, and the component boxes B can be mounted on two assembly stages, respectively. On the other hand, the empty boxes C from which the parts have been taken out can also be collected and mounted, the recovered empty boxes C can be returned at the picking site P, and different types of component boxes B can be sorted and mounted. As a result, the cycle time of parts supply and empty box collection can be shortened, leading to an improvement in the conveyance capacity and a reduction in the required number of automatic guided vehicles.

  (E) One component mounting shelf 2A and empty box mounting shelf 3A on the upper side are formed higher than the other component mounting shelf 2B and empty box mounting shelf 3B, and the transfer mechanism 50 is provided with one component box mounting shelf 2A. The vertical position of the frame 8B on the center side of the cart 1 of the empty box mounting shelf 3A is lowered, while the vertical position of the frame 8B on the center side of the cart 1 of the other component box mounting shelf 2B and empty box mounting shelf 3B is lowered. By raising, both the component box mounting shelf 2 and the empty box mounting shelf 3 are inclined so as to be on the same plane, and the one component box mounting shelf 2A and the empty box mounting shelf 3A to the other component box mounting shelf 2B and Since the parts box B and the empty box C can be moved to the empty box mounting shelf 3B, the movement of the parts box B and the empty box C loaded on each shelf can be suppressed in the horizontal state, while in the inclined state, from the shelf to the shelf. Easy and reliable movement of left and right parts box B and empty box C Can, by utilizing the traveling of the unmanned conveyance carriage 1, a component box B can be automatically moved on carriage 1, manually or driven device becomes unnecessary.

  (F) The transfer mechanism 50 includes a rail 51 provided in the center of the carriage 1 so as to be slidable in the front-rear direction, and a frame on the center side of the carriage 1 of the receiving side component box mounting shelf 2A or the collection side empty box mounting shelf 3A. The long lever 53 connected to 8B and the short lever 54 connected to the frame body 8B on the center side of the carriage 1 of the supply side component box mounting shelf 2B or the return side empty box mounting shelf 3B are integrated with each other at a narrower angle than a right angle. The base portion of the long lever 53 and the short lever 54 includes a plurality of deformed L links 52 that are pivotally supported by the rail 51 by a left and right direction pin and can swing, and the rail 51 is one of the front and rear directions. At the moving position, the long lever 53 is erected to raise the central frame 8B of the receiving side component box mounting shelf 2A or the collection side empty box mounting shelf 3A, and to supply the supply side component box mounting shelf 2B or the return side empty box. Of shelf 3B The central frame 8B is lowered to bring both the mounting shelves 2 and 3 into a horizontal state, and when the rail 51 is in the other movement position in the front-rear direction, the long lever 53 is tilted to receive the receiving-side component box mounting shelf 2A or The central frame 8B of the collection side empty box mounting shelf 3A is lowered and the central frame 8B of the supply side component box mounting shelf 2B or the return side empty box mounting shelf 3B is raised so that both the mounting shelves 2 and 3 are attached. The surfaces are inclined and substantially the same plane.

  For this reason, the horizontal state of each of the shelves 2 and 3 can be determined by simply sliding the rail 51 back and forth as required by the operating levers 55 and 58 provided on the track locus corresponding to the travel position of the transport carriage 1. It is possible to switch to an inclined state, so that no manual or driving equipment is required.

  (G) The transfer mechanism 50 is arranged so as to switch the receiving-side component box mounting shelf 2A and the supply-side component box mounting shelf 2B in the upper stage of the carriage 1 between a horizontal state and an inclined state. The central side frame 8B of the shelf 3A is linked with the central side frame 8B of the receiving side component box mounting shelf 2A by vertical links 67A and 67B, and the central side frame 8B of the return side empty box mounting shelf 3B is The structure of the transfer mechanism 50 can be further simplified by the vertical movement of the central side frame body 8B of the supply-side component box mounting shelf 2B being linked by the vertical links 67A and 67B.

  (G) A plurality of rollers 61 for moving and guiding the component box B or the empty box C in the left-right direction of the carriage 1 are provided on the receiving-side and supply-side component box mounting shelf 2 and the collection-side and return-side empty box mounting shelf 3. By providing, the movement of the mounted component box B and the empty box C in the left-right direction can be surely performed, and the reliability of the supply of the component box and the recovery of the empty box can be improved.

  (K) The supply-side component box mounting shelf 2B and the return-side empty box mounting shelf 3B protrude higher than the plurality of rollers 61 in the left-right direction when these mounting shelves 8 are in the horizontal state, By providing the plurality of rollers 64 for moving and guiding the component box B or the empty box C in the direction, the supply of the component box and the return of the empty box can be reliably executed, and the reliability can be improved.

  In the present invention, a part (parts box B) is loaded at the picking site P, transported and supplied to the part supply station 20 provided on the assembly stage of the assembly line, and the empty box C from which the parts have been taken out at the assembly stage is empty. The parts supply method using the parts transport carriage 1 loaded at the box collection station 10 and collected at the picking site P has been described. For example, a plurality of parts boxes in which parts are accommodated at the parts unloading station in the factory It is also used when loading and transporting B, supplying it to the picking site P of the factory, loading the empty box from which the parts were taken out at the picking site P, transporting them to the parts unloading station, and returning them. be able to.

The schematic front view of the components conveyance trolley which shows one Embodiment of this invention. The side view of a parts conveyance trolley. The top view of a components conveyance trolley similarly. Explanatory drawing which removed the front side support | pillar of the components conveyance trolley. Explanatory drawing of the state in which the shelf board was inclined. The front view of the state in which the shelf board was inclined. The side view of a raising / lowering mechanism. Sectional drawing from the trolley | bogie front direction of a raising / lowering mechanism. The side view which shows the operation state of a raising / lowering mechanism. Sectional drawing from the trolley | bogie front direction of the operation state of FIG. The side view of the components conveyance trolley in the state where the shelf board was inclined. Each side view of the shelf board of the horizontal state (A) and inclination state (B) of a receiving side component box mounting shelf and a collection | recovery side empty box mounting shelf. Each side view of the shelf board of the horizontal state (A) and inclination state (B) of a supply side component box mounting shelf and a return side empty box mounting shelf. The top view of an empty box mounting shelf. The top view of the empty box collection | recovery station of a delivery waiting state. The side view of the empty box collection | recovery station of a delivery waiting state. The top view (A) and side view (B) of the empty box collection | recovery station of the injection | throwing-in state 1. FIG. The top view (A) and side view (B) of the empty box collection | recovery station of the injection | throwing-in state 2. FIG. The top view (A) and side view (B) of the empty box collection | recovery station of the injection | throwing-in state 3. FIG. The top view (A) and side view (B) of the parts supply station of a delivery waiting state. The top view (A) and side view (B) of the components supply station of the injection | throwing-in state 1. FIG. The top view (A) and side view (B) of the components supply station of the injection | throwing-in state 2. FIG. The layout of the parts supply apparatus in this embodiment to a part of vehicle assembly production line and a production line. Explanatory drawing which shows the procedure of the parts box supply and empty box collection | recovery by a parts conveyance trolley | bogie. The front view of the components conveyance trolley before an empty box collection station. The side view of the parts conveyance trolley before an empty box collection station. The front view of the components conveyance trolley which is passing the empty box collection station. The side view of the components conveyance trolley in passing the empty box collection station. The front view of the components conveyance trolley at the time of component supply station approach. The side view of the components conveyance trolley at the time of component supply station approach. The front view of the components conveyance trolley in the parts supply station passage. The side view of the components conveyance trolley in the parts supply station passage. The front view of the components conveyance trolley after passing a components supply station. The side view of the components conveyance trolley after passing a components supply station. The front view of the components conveyance trolley in driving following FIG. The side view of the components conveyance trolley in driving following FIG. The front view of the components conveyance trolley at the time of component supply station approaching on the opposite side of an assembly stage. The side view of the components conveyance trolley at the time of the components supply station approach similarly on the other side of an assembly stage. The front view of the components conveyance trolley at the time of the subsequent empty box collection | recovery station approach. The front view of the parts conveyance trolley at the time of entering an empty box collection station similarly. The front view of the components conveyance trolley after passing an empty box collection station. The side view of the components conveyance trolley after passing an empty box collection station. Explanatory drawing which shows the procedure of the components box mounting by the components conveyance trolley | bogie and an empty box return. The front view of the components conveyance trolley in passing the empty box return station. The front view of the components conveyance trolley in the parts box waiting station passage. The front view of the components conveyance trolley after passing a components box standby station. The front view of the components conveyance trolley following FIG. The front view of the components conveyance trolley following FIG. The front view of the components conveyance trolley at the time of an empty box return station approach. The front view of the components conveyance trolley after passing an empty box return station. The front view of the components conveyance trolley at the time of a components box standby station approach. The front view of the components conveyance trolley after passing a components box standby station. The front view of the components conveyance trolley in the conveyance state of an assembly stage.

Explanation of symbols

DESCRIPTION OF SYMBOLS 1 Parts conveyance cart, conveyance cart 2 Parts box mounting shelf 2A Reception side component box mounting shelf 2B Supply side component box mounting shelf 3 Empty box mounting shelf 3A Collection side empty box mounting shelf 3B Return side empty box mounting shelf 8 Shelf plate 10 Empty Box collection station 17 Empty box collection shelf 20 Parts supply station 27 Parts receiving shelf 30 Empty box return station 31 Empty box return shelf 40 Parts standby station 41 Parts box standby shelf 50 Lifting mechanism 65, 68 Scraping arm 61 Left and right direction roller 64 Front and rear Directional roller

Claims (14)

A parts supply method that uses a transport cart that mounts a parts box containing supply parts at a picking site, transports them to a parts supply station of an assembly stage, and inputs them.
The parts box mounting shelf of the transport carriage is set to a height that can pass below the parts box standby shelf of the picking field and pass above the parts box supply shelf of the parts supply station,
A component box scraping arm is provided above the rear end above the component box mounting shelf of the transport carriage and above the front end of the component supply shelf of the component supply station,
By transporting the parts box mounting shelf of the transport carriage below the parts box standby shelf of the picking place, the parts box on the parts box standby shelf is scraped off and pushed by the arm and slid on the standby shelf to be transported from the front end of the standby shelf. The parts box is stopped on the parts box mounting shelf of the transport cart by the scraping arm of the parts supply station by transferring it to the parts box mounting shelf of the truck and passing it over the parts supply shelf of the parts supply station. A component supply method characterized by being transferred to a supply shelf. A parts supply method that uses a transport cart that mounts a parts box containing supply parts at a picking site, transports them to a parts supply station of an assembly stage, and inputs them.
The transport cart is capable of passing below the parts box standby shelf of the picking field and is arranged on the left and right sides of the cart set to a height that can pass above the parts box supply shelf of the parts supply station. A mounting mechanism, a transfer mechanism for transferring a component box mounted on one component box mounting shelf to the other component box mounting shelf, and a component box disposed above the rear end of the one component box mounting shelf of the transport carriage Scraping means,
The front end of the standby shelf while scraping the component box on the component box standby shelf by pushing it with the arm by passing the one component box mounting shelf of the transport cart below the part box standby shelf of the picking field To one of the parts box mounting shelves of the transport cart,
Next, transfer the component box on one component box mounting shelf to the other component box mounting shelf by the transfer means,
The front end of the standby shelf while scraping the component box on the component box standby shelf by pushing it with the arm by passing the one component box mounting shelf of the transport cart below the part box standby shelf of the picking field To one of the parts box mounting shelves of the transport cart,
By passing the other parts box mounting shelf of the transport carriage above the parts supply shelf of the parts supply station, the parts box is stopped on the other parts box mounting shelf of the transport carriage by scraping means of the parts supply station. To the parts supply shelf,
Next, after the component box is transferred from one component box mounting shelf to the other component box mounting shelf by the transfer device, the other component box mounting shelf of the transport cart is moved above the component supply shelf of the component supply station. A component supply method characterized in that the component box is stopped on the other component box mounting shelf of the transport carriage and transferred to the component supply shelf by passing through the scraping means of the component supply station. This is a parts supply method that uses a transport cart that mounts an empty box from which a part has been taken out from a parts box containing supply parts at the empty box collection station of the assembly stage and transports and returns it to the empty box return station of the picking area. ,
The empty box mounting shelf of the transport cart is set to a height that can pass below the empty box collection shelf of the empty box collection station and can pass above the empty box return shelf of the picking place,
An empty box scraping arm is provided above the rear end above the empty box mounting shelf of the transport carriage and above the front end of the empty box return shelf of the picking place,
By passing the empty box mounting shelf of the transport carriage below the empty box recovery shelf of the empty box recovery station, the empty box on the empty box recovery shelf is scraped and pushed by the arm to slide on the empty box recovery shelf. By transferring from the front end to the empty box mounting shelf of the transporting cart and passing over the empty box return shelf of the picking field, the empty box is stopped on the empty box mounting shelf of the transporting car by the scraping arm of the picking field The parts supply method, wherein the parts are transferred to an empty box return shelf in a picking field. This is a parts supply method that uses a transport cart that mounts an empty box from which a part has been taken out from a parts box containing supply parts at the empty box collection station of the assembly stage and transports and returns it to the empty box return station of the picking area. ,
The transport cart can pass through the lower side of the empty box collection shelf of the empty box collection station and the empty cart arranged on the left and right of the carriage set to a height that can pass through the upper side of the empty box return shelf of the picking field. A box mounting shelf, a transfer mechanism for transferring an empty box mounted on one empty box mounting shelf to the other empty box mounting shelf, and an empty space disposed above the rear end of one empty box mounting shelf of the transport carriage. Box scraping means,
By passing one empty box mounting shelf of the transport carriage below the empty box collection shelf of the empty box collection station, scraping the empty box on the empty box collection shelf and pushing it with the arm, sliding the empty box on the empty box collection shelf Transfer from the front end of the collection shelf to one empty box mounting shelf of the transport cart,
Next, the empty box on one empty box mounting shelf is transferred to the other empty box mounting shelf by the transfer means,
While passing one empty box mounting shelf of the transport carriage below the empty box collection shelf of another empty box collection station, scraping the empty box on the empty box collection shelf and pushing it by the arm while sliding on the empty box collection shelf Transfer from the front end of the empty box collection shelf to one empty box mounting shelf of the transport cart,
By passing the other empty box mounting shelf of the transport carriage above the empty box return shelf of the picking field, the empty box is stopped on the other empty box mounting shelf of the transporting truck by the scraping means of the picking field. Transfer to the empty box return shelf,
Next, after transferring the empty box from one empty box mounting shelf to the other empty box mounting shelf by the transfer device, the other empty box mounting shelf of the transport carriage is moved to another empty box return shelf of the picking place. A component supply method characterized in that the empty box is stopped on the other empty box mounting shelf of the transport carriage and transferred to the empty box return shelf by passing through the upper part by scraping means of the picking field . A parts transport cart that mounts a parts box containing supply parts at a picking site, transports them to a parts supply station of an assembly stage, and inputs them.
The transport carriage is set to a height that can pass under the parts box standby shelf of the picking field and can pass over the parts box supply shelf of the parts supply station, and the parts box scraping arm above the rear end. A parts box mounting shelf having
By transporting the parts box mounting shelf of the transport carriage below the parts box standby shelf of the picking place, the parts box on the parts box standby shelf is scraped off and pushed by the arm and slid on the standby shelf to be transported from the front end of the standby shelf. The parts box is stopped on the parts box mounting shelf of the transport carriage by the scraping means of the parts supply station by transferring the parts onto the parts box mounting shelf of the carriage and passing above the parts supply shelf of the parts supply station. A parts transport cart that is transferred to a parts supply shelf. A parts transport cart that mounts a parts box containing supply parts at a picking site, transports them to a parts supply station of an assembly stage, and inputs them.
The transport cart is capable of passing below the parts box standby shelf of the picking field and is arranged on the left and right sides of the cart set to a height that can pass above the parts box supply shelf of the parts supply station. A mounting mechanism, a transfer mechanism for transferring a component box mounted on one component box mounting shelf to the other component box mounting shelf, and a component box disposed above the rear end of the one component box mounting shelf of the transport carriage Scraping means,
The front end of the standby shelf is slid on the standby shelf by scraping the component box on the component box standby shelf by passing one component box mounting shelf of the transport carriage below the part box standby shelf of the picking field To one of the parts box mounting shelves of the transport cart,
After transferring the component box on one component box mounting shelf to the other component box mounting shelf by the transfer means, passing one component box mounting shelf below another component box standby shelf in the picking field By scraping off the parts box on the parts box standby shelf and pushing it with the arm and sliding on the standby shelf, it is transferred from the front end of the standby shelf to one parts box mounting shelf of the transport carriage, and is transferred to the parts supply station,
By passing the other parts box mounting shelf of the transport carriage above the parts supply shelf of the parts supply station, the parts box is stopped on the other parts box mounting shelf of the transport carriage by scraping means of the parts supply station. Then, after the component box is transferred from one component box mounting shelf to the other component box mounting shelf by the transfer device, the other component box mounting shelf of the transport cart is replaced with the parts. By passing above the component supply shelf of the supply station, the component box is stopped on the other component box mounting shelf of the transport carriage by the scraping means of the component supply station and transferred to the component supply shelf. Parts transport cart. It is a parts transport cart that mounts an empty box from which a part has been taken out of a parts box containing supply parts at an empty box collection station of the assembly stage, transports it to the empty box return station of the picking site, and returns it.
The empty box mounting shelf of the transport cart is set to a height that can pass below the empty box collection shelf of the empty box collection station and can pass above the empty box return shelf of the picking place,
An empty box scraping arm is provided above the rear end above the empty box mounting shelf of the transport carriage and above the front end of the empty box return shelf of the picking place,
By passing the empty box mounting shelf of the transport carriage below the empty box recovery shelf of the empty box recovery station, the empty box on the empty box recovery shelf is scraped and pushed by the arm to slide on the empty box recovery shelf. By transferring from the front end to the empty box mounting shelf of the transporting cart and passing above the empty box return shelf of the picking field, the empty box is stopped on the empty box mounting shelf of the transporting car by the scraping arm of the picking field. A parts transport cart characterized by being transferred to an empty box return shelf at a picking site. It is a parts transport cart that mounts an empty box from which a part has been taken out of a parts box containing supply parts at an empty box collection station of the assembly stage, transports it to the empty box return station of the picking site, and returns it.
The transport cart can pass through the lower side of the empty box collection shelf of the empty box collection station and the empty cart arranged on the left and right of the carriage set to a height that can pass through the upper side of the empty box return shelf of the picking field. A box mounting shelf, a transfer mechanism for transferring an empty box mounted on one empty box mounting shelf to the other empty box mounting shelf, and an empty space disposed above the rear end of one empty box mounting shelf of the transport carriage. Box scraping means,
By passing one empty box mounting shelf of the transport carriage below the empty box collection shelf of the empty box collection station, scraping the empty box on the empty box collection shelf and pushing it with the arm, sliding the empty box on the empty box collection shelf Transfer from the front end of the collection shelf to one empty box mounting shelf of the transport cart,
Next, after the empty box on one empty box mounting shelf is transferred to the other empty box mounting shelf by the transfer means, the one empty box mounting shelf passes below the empty box recovery shelf of another empty box recovery station. The empty boxes on the empty box collection shelves are scraped off and pushed by the arm and slid on the empty box collection shelves while being transferred from the front end of the empty box collection shelves to one empty box mounting shelf of the transport carriage and transported to the picking area. And
By passing the other empty box mounting shelf of the transport carriage above the empty box return shelf of the picking field, the empty box is stopped on the other empty box mounting shelf of the transporting truck by the scraping means of the picking field. After transferring to the empty box return shelf, and then transferring the empty box from one empty box mounted shelf to the other empty box mounted shelf by the transfer device, picking the other empty box mounted shelf of the transport cart By passing over another empty box return shelf in the field, the empty box is stopped on the other empty box loading shelf of the transport carriage by the scraping means of the picking field and transferred to the empty box return shelf. A characteristic parts transport cart.   The parts transporting carriage includes a parts box mounting shelf on the upper side of the carriage and an empty box mounting shelf on the lower side of the carriage, and one empty box mounting shelf on the opposite side of the one part box mounting shelf. The parts transport cart according to claim 6 or 8, further comprising:   The one component mounting shelf and the empty box mounting shelf on the upper stage side are formed higher than the other component mounting shelf and the empty box mounting shelf, and the transfer mechanism is the center of the carriage of the one component box mounting shelf and the empty box mounting shelf. While lowering the vertical position of the frame on the other side, raising the vertical position of the frame on the center side of the carriage of the other component box mounting shelf and empty box mounting shelf, both component box mounting shelves and empty box mounting Inclining the shelves so that they are on the same plane, the parts box and empty box can be moved from one parts box mounting shelf and empty box mounting shelf to the other component box mounting shelf and empty box mounting shelf. The parts transport cart according to claim 9, wherein The transfer mechanism is provided with a rail provided in the center of the carriage so as to be slidable in the front-rear direction, a long lever connected to a frame on the center side of the carriage of the receiving side component box mounting shelf or the collection side empty box mounting shelf. A short lever connected to the frame on the center side of the carriage of the side part box mounting shelf or the return side empty box mounting shelf is integrally provided with a narrower angle than a right angle, and the base part of the long lever and the short lever is a horizontal pin And a plurality of deformed L-links that are pivotally supported by the rail and swingable,
At one moving position in the front-rear direction, the rail erects the long lever to raise the central frame of the receiving-side component box mounting shelf or the collection-side empty box mounting shelf and at the supply-side component box mounting shelf or the return side Lower the frame on the center side of the empty box mounting shelf so that both mounting shelves are in a horizontal state, and when the rail is in the other movement position in the front-rear direction, the long lever is pushed down to receive the component box mounting shelf or the collection side The central frame of the empty box mounting shelf is lowered and the central frame of the supply side component box mounting shelf or the return side empty box mounting shelf is raised so that both mounting shelves have substantially the same inclined surface. The parts transport cart according to any one of claims 6 and 8 to 10.   The transfer mechanism is arranged to switch the receiving-side component box mounting shelf and the supply-side component box mounting shelf in the upper stage of the carriage between a horizontal state and an inclined state, and the central frame of the collection-side empty box mounting shelf in the lower stage of the carriage is The vertical side link links the central frame of the receiving side component box mounting shelf with the central side frame, and the central frame of the return side empty box mounting shelf is connected to the central side frame of the supply side component box mounting shelf by the vertical link. The parts conveying cart according to claim 11, wherein the vertical movement is coordinated.   The receiving-side and supply-side component box mounting shelves and the collection-side and return-side empty box mounting shelves include a plurality of rollers that move and guide the component boxes or empty boxes in the left-right direction of the carriage. The parts conveying cart according to any one of claims 6 and 8 to 12.   The supply-side component box mounting shelf and the return-side empty box mounting shelf have a component box or an empty box in the front-rear direction of the carriage that protrudes higher than the plurality of rollers in the left-right direction when these mounting shelves are in a horizontal state. The parts conveying cart according to claim 6, further comprising a plurality of rollers for moving and guiding the parts.

Images