JPS62136401A - Parts supply device in assembly line - Google Patents

Abstract

PURPOSE:To aim at realizing the marshaling supply system for large size heavy parts, by providing carrier vehicles for picking up plate-like parts from more than two storage sections and conveying devices for receiving a plurality of the plate-like parts paid out from the picking carrier vehicles and conveying them to several different positions on each assembly line. CONSTITUTION:When an instruction for preparing parts is issued, picking carrier vehicles 6, 7 are moved to corresponding positions on racks 2, 3, and mobile picking devices 15 are moved independently from each other to scan over parts W on pallets P in order to carry out picking operation. The picking carrier vehicles 6, 7 on which the parts are set are moved to part receiving devices 18, 19 in conveying devices 8, 9, respectively, so that the parts W are delivered to the latter. The received parts W are turned by turn tables 21, 24, and are conveyed to predetermined positions through left and right conveyer devices 22, 23 along an assembly line. With this arrangement it is possible to realize a marshaling supply system for large size heavy parts such as vehicle doors, or the like.

Description

DETAILED DESCRIPTION OF THE INVENTION [Field of Industrial Application] The present invention relates to a component supply device in an assembly line.

[Conventional technology]

On the assembly line, in order to prevent workers from making mistakes in assembling the parts, they are arranged one set at a time according to the type of product, and are supplied to the assembly line in an orderly manner. This is a part supply method called marshalling. It has been known.

However, although devices are known that implement the above-mentioned marshalling method when the parts to be assembled are small, lightweight items, devices that implement the above-mentioned marshalling method when the parts to be assembled are large, heavy parts such as car doors, etc. However, it has not yet been realized due to its large weight.

[Problem that the invention seeks to solve]

As described above, it is an object of the present invention to provide an apparatus that can realize a marshalling supply method even when the target part is a large and heavy article such as an automobile door.

[Means for solving problems]

The apparatus according to the present invention that has achieved the above object includes a rack that stores pallets containing a plurality of plate-shaped articles in multiple storage compartments in multiple stages and rows, and a rack that runs along the ranks and has at least two or more storage compartments. A picking cart that picks a plurality of articles from a plurality of compartments of This is a parts supply device consisting of a transport device that transports parts to a location.

〔Example〕

Hereinafter, an embodiment applied to an assembly line for automobile assembly will be described based on the drawings.

FIG. 1 is an overall perspective view of a parts supply device according to the present invention installed in parallel with an assembly line (1) in a factory.
The parts supply device of this embodiment is configured to feed box-frame shaped barens (P) each containing about 10 plate-like parts (doors) (W) in multiple stages and in multiple rows (3 stages x 4 rows). Among the storage racks (2) (3), (4) (5) and the above racks (2) (3), (4) (5), rank (2) (3) of the side curved surface of the assembly line (1) ) and pick plate-shaped parts (W) from each stage.

The king cart (6) (7) and the picking cart (6) (
At the home position of 7), a conveying device (8) receives a plurality of plate-like parts (W) simultaneously delivered in a direction opposite to the picking direction and conveys them to different points on the assembly line (1). (9), and in this example, the plate-shaped part (W) is a door part, so the racks (2), (3), (4) (
5) Picking carts (6) (7), and transport devices (8) and (9) are provided separately for the left and right sides, respectively, and the assembly line (1) has racks divided into two rows on the side curved surface and the rear surface. (2) (3) , (4) (5)
is the rear rack (4) (5) is the front rack (2)
A stacker crane (11) (12) for transferring pallets (P) is installed between (2), (3), (4) and (5) to function as a stock shelf for (3). has been done.

In other words, the plate-shaped part (W) is attached to the front and rear racks (2) (3
), (4) and (5), there is a stacker crane (11
) (12), the pallets (P) are transferred as a set, and after being transferred to the storage compartments of the front racks (2) and (3), the pallets (P) are transferred to the picking cart ( 6) The sheets are picked and transported one by one by (7) and by the transport devices (8) and (9).

Each device will be explained in turn below.

In other words, racks (2) and (3) are 3 tiers x 4 as mentioned above.
In this embodiment, the rack (2
) (3) As shown in the third diagram, parts of the same type are stored in each of the two rows on the left and right, and as soon as one of the barrels (P) in each two rows becomes empty, the parts in the adjacent row are stored. Baren)
All you have to do is pick the parts from (P), and pick up a new actual pallet (P) from the rear racks (4) and (5) of the stock river using the stacker cranes (11) and (12) mentioned above.
Efforts are being made to ensure that the time it takes to replace and transport the empty barrette (P) does not result in lost time.

Each storage compartment of the racks (2) and (3) has 1
The assembly line (1) is arranged such that the first stage is used for storing rear doors for four-door cars, the second stage is used for storing front doors for four-door cars, and the third stage is used for storing doors for two-door cars. Being swept away (
(The direction of movement is indicated by the arrow in Figure 1.2.) If the vehicle type is a four-door vehicle, the right side door 2 of the vehicle body is moved by the picking trolley (6).
The two doors on the left side of the car body are picked from the 1st and 2nd tiers of the rack (3) by the picking cart (7), and the two doors for the left side of the car body are picked by the picking cart (7) from the 1st and 2nd tiers of the rack (3). 2 doors for left side (3)
), and if the vehicle type is a two-door vehicle, one door for the right side of the vehicle body is picked from the third stage of the rack (2) by the picking trolley (6), and the picking trolley ( 7), one door for the left side of the vehicle body is picked from the third stage of the rack (3).

In addition, in FIG. 3, the types of door parts to be stored in each storage compartment are indicated by symbols.

That is, (^R) (^L) respectively indicate the right door and left door for a two-door vehicle, (BRf) (HRr) indicate the right front door and right rear door, respectively, for a four-door vehicle, and ( BLf
) (BLr) respectively indicate a left front door and a left rear door for a four-door vehicle, and the numeral added after each symbol represents the difference in vehicle type (that is, type 1 or type 2).

The picking carts (6) (7) are equipped with racks (2) (
3) inside the bogie main body (14) which is driven to run on a rail (13) laid along the rail (13) by a drive device (not shown).
Each is equipped with a three-stage moving and picking device (15), and the moving picking device (15) is mounted on the main body of the trolley (14).
) A hook (not shown) is a picking member (hanger) consisting of a lever and an endless chain (endless belt) (20) on a movable body (17) that is horizontally movable along a rail (16) installed horizontally in is equipped with a pick-up member), and after the picking carts (6) and (7) stop at either rank (2) or (3) row position according to a command from a higher-level control device, a four-door vehicle If you have it, move the 1st and 2nd stage pi-noking equipment! (15) moves horizontally while detecting the presence or absence of parts (W) in the pallet (P), and if it is a two-door car, the third stage mobile picking device (15) moves the part (W) in the pallet (P). ) while detecting the presence or absence of the parts, and stops after reaching the part position within the pallet (P), and the above-mentioned hooks are moved from within each pallet (P) to the desired position by the operation of the lever and endless chain (18). The parts (W) are taken in and transferred onto a moving body (17) of a mobile picking device.

In other words, for example, when a command is issued to prepare parts for a 4-door car of type 1, the picking carts (6) and (7) are placed in the second row from the left in Figure 3 of racks (2 and 3), respectively. digit 1
The first and second stage mobile picking devices (15) move independently, and the (BRrl) (url) and ([1Lrl) (B
Part (Lfl) from above Valent (P) in section
W> is scanned and picked.

Similarly, when preparing parts for a 4-door vehicle of type 2, picking carts (6) (7) are used for racks (2) (
3), move to the rightmost column in Figure 3, and move to the second row from the left in Figure 3 for type 1 two-door cars, and the rightmost column in Figure 3 for type 2 door cars. However, as mentioned above, the same parts for the same type are stored in the first and second rows, and the third and fourth rows from the left in Figure 3 of each rack (2) and (3). Therefore, if the pallet (P) in the compartment in the second row from the left is empty, the picking carts (6) and (7) will move to the first row from the left, and then move to the first row from the left. If the pallet (P) in the fourth column (rightmost column) is empty, the pallet (P) can be moved to the third column from the left and the picking operation can be continued without causing any loss time.

And, as mentioned above, in the case of a 4-door car, the first stage,
The parts are placed on the second-stage mobile picking device (15), and in the case of a two-door vehicle, the parts are placed on the third-stage mobile picking device (15). Picking trolley placed (
6) (7) is the next rank (2) where the parts receiving devices (18) and (19) of the transport devices (8) and (9) are installed respectively.
(3) Move to the central home body (shown in Figure 2) and transfer the loaded parts (W) to the parts receiving device (18).
(19) This conveyance device (8) (9)
is as follows.

That is, in the conveyance device (8) (9) of this embodiment, the conveyance device (8) for the right side door is connected to the component receiving device (18).
, a turntable (21) for changing the direction of the parts received by the receiving device (18), and a turntable (21) for changing the direction of the parts received by the receiving device (18), and a turntable (21) for moving the parts discharged from the turntable (21) to a predetermined position on the right side along the assembly line (1). The transport device f! (9) includes the above-mentioned parts receiving device (19), an overhead conveyor device (23) for transferring the parts received by the receiving device (19) to the other side over the assembly line (1), and the conveyor device A turntable (24) that turns the parts around at the end of the assembly line (23), and a conveyor device that transfers the parts discharged from the turntable (24) to a predetermined position on the left side along the assembly line (1). (25), and will be explained below starting with the conveyance device (8) for the right side door.

That is, as shown in Fig. 2.4.5, the parts receiving device (18) is adjacent to the picking cart (6) stopped at the home position, and is located at a height corresponding to each stage in the picking cart (6). a receiving device (28) provided with a receiving stand (27) in which horizontally running endless chains (endless belts) (26) are arranged in positions that abut the bottom and side surfaces of the parts; A fixed receiving stand (29) having the same structure as the above receiving stand (27) and an elevator type receiving stand (31) that move up and down are provided adjacent to the rear of the money receiving device (28).
) and an elevator device (32) with
) is capable of horizontal traverse movement, and the fixed receiving platform (29) of the elevator device (32)
) is fixed at a position that overlaps in the front-rear direction with the leftward movement position in FIG.
The endless chain (20) of the mobile picking device (15) in the picking cart (6) is in a state in which the receiving stands (27) in the picking cart (6) are aligned vertically as shown by the solid line in FIG. 1.3.
If the endless chain (26) on the receiving platform (27) is run in the same direction, the parts (W) on each stage on the picking trolley (6), that is, in the case of a 4-door car, the parts (W) on each stage, 1 and 2 stages in the case of a 4-door car. The second part, in the case of a two-door car, the part on the third stage is transferred to the money receiving device (28).

Therefore, next, the traverse type receiving table (27) on which the part (W) is placed is moved in the direction of the chain line in FIG. If the endless chain (26) in (29) is run in the same direction, the parts (W) in the first stage will be transferred to the fixed receiving stand (29), and the parts (W) in the second and third stages will be transferred to the next stage. The money is transferred from the receipt device (2nd day) to the elevator device (32) in the following manner.

In other words, as mentioned above, if there are parts on the 1st and 2nd stages of the receiving machine (28), it is ready for a 4-door machine, and if there are parts only on the 3rd stage, it is ready for a 2-door machine. (
28) The parts (W) are placed on only one of the receiving stands (27) on the third stage, so the elevator type receiving stand (31) is not placed on the receiving stand (27) of the third stage. After moving and positioning it to the stage (second or third stage) that is currently being
7) endless chain (26) and elevator type receiving stand (3)
If the endless chain (26) in 1) is run in the same direction, the part (W) on the relevant stage will be moved to the elevator receiving platform (31).
).

In addition, when preparing for the two-door version, parts are placed only on the third stage of the payout device (28), so the elevator device (32)
) The parts to be transferred to the elevator receiving platform (31
) exists only on

Then, as described above, the fixed receiving stand (29) and the elevator receiving stand (31) of the elevator device (32) are
The parts (W) transferred above are placed on the elevator receiving platform (
31) is lowered to the lowest position (dashed line in Fig. 5), the parts are aligned approximately at the floor level and have the same structure as the receiving stand (27) provided between the turning table (21). A fixed receiving stand with an endless chain (26) for conveyance (
33) passing through a conveyance path formed by two parallel units, and then moving to a turntable (
21) It is designed to be transported upward.

The turntable (21) includes a turntable (34) that rotates intermittently by 90 degrees around a vertical axis, and a parallel receiving stand (35) fixed on the turntable (34) and having the same structure as the above-mentioned receiving stand (27).
If the endless chain (26) on the receiving stand (35) runs in the same direction as the endless chain (26) on the receiving stand (33) in the state shown in the second figure, the part (W) The turntable (21) is extended onto the turntable (21), and then the turntable (34)
) is rotated 90 degrees in the direction of the arrow, and if the endless chain (26) on the receiving stand (35) and the endless chain on the conveyor device (22) run in the same direction, the part (W) will be placed on the conveyor device (22). It is now being paid out.

The conveyor device (22) consists of two conveyors (36) (37) of different lengths running in parallel, each conveyor (36)
) (37) is a transfer table (38) having the same structure as the receiving table (27), that is, a running endless chain (26) is provided at a position where the bottom and side surfaces of the parts (W) to be conveyed come into contact.
).

In other words, on the mobile picking device (15) of the above-mentioned picking cart (6) (7), each receiving platform (27) (29) (31) of the transport device (8) (9), and the transfer platform ( 38), the parts (W) are supported and transferred while leaning obliquely on the endless chains (20) and (26) on the bottom and side surfaces, respectively.

Next, the conveyance device (9) for the left door will be explained. As shown in Figure 2.6.7, the parts receiving device (19) for the left door is adjacent to the picking trolley (7) stopped at the home position, and corresponds to each stage in the picking trolley (7). Receiving money device (41) provided with a receiving stand (39) having the same structure as the receiving stand (27) (that is, having an endless chain (26) for transporting parts) at a height position.
and an elevator device (44) equipped with two elevator type receiving stands (42) (43) provided adjacent to the rear of the money receiving device (41), The receiving stand (39) at the bottom of 41) is capable of horizontal traverse movement.

Similarly to the conveyance device (8) for the right side door, the picking cart (7) is placed in a state in which the receiving trays (39) in the receiving tray device (41) are aligned vertically as shown by the solid line in FIG. )
Endless chain of mobile picking device f (15) in
20) and the endless chain (2G) of the receiving platform (39) run in the same direction, the parts (W) on each stage of the picking trolley (7), that is, 1.2 stages in the case of a 4-door car. The second part, in the case of a two-door car, the part (W) on the third stage is transferred to the money receiving device (41).

Therefore, the first stage traverse type receiving table (hereinafter referred to as traverse type receiving table) on which the part (W) is placed next (
39) in the direction of the chain line in FIG. 6, and lowered the elevator type receiving platform (42) to the lowest position shown in the solid line in FIG. (
39) (42) Upper endless chain (26) (26)
If they run in the same direction, the parts (W) on the first stage will be transferred to the elevator receiving platform (42), and the parts on the second and third stages will be transferred from the receiving machine (41) to the elevator as follows. Transferred to the device (44).

In other words, in the same way as for the right side door described above, if there are parts in the 1st and 2nd stages of the payment receiving device (41), it is ready for a 4-door, and if there are parts only in the 3rd stage, it is ready for a 2-door. Therefore, the 2nd and 3rd stage receiving trays (
39) The parts (W) are only placed on one side of the top, so the elevator type receiving stand (43) is moved to the stage where the part is placed (second or third stage).
If the endless chain (26) of the receiving stand (39) of the relevant stage of the money receiving device (41) and the endless chain (26) of the elevator type receiving stand (43) are run in the same direction, The parts (W) on the relevant stage are transferred to an elevator receiving stand (43).

In addition, when preparing for the two-door version, parts are placed only on the third stage of the payout device (41), so the elevator device (44)
) are only on the elevator receiving platform (43).

The parts (W) transferred onto the elevator device (44) as described above are then placed on the elevator receiving stand (42).
) (43) both rise to the highest position, (
(FIG. 7), they are arranged at the third level on the floor and are transported via the overhead conveyor device (23) to the turntable (24) on the left side of the assembly line (1).

The overhead conveyor device (23) is connected to the receiving table (3).
It consists of two connected bodies of transfer tables (45) having the same structure as 9), that is, a running endless chain (26) is provided at a position where the bottom and side surfaces of the parts (W) to be transferred come into contact.

The turntable (24) on the left side of this assembly line is a turntable (46) that rotates intermittently by 90 degrees around the vertical axis.
) and the receiving stand (39) fixed on the turntable (46).
and parallel receiving stands (47) of the same structure as the above-mentioned rotating stand (47).
46) and a lid device (48) for raising and lowering the second
In the illustrated state, the endless chain (26) on the receiving stand (47)
) is run in the same direction as the endless chain (26) of the overhead conveyor device (23), the part (W) is taken onto the turntable (24), and then the turntable (46)
After rotating the lifter device (48) by 90 degrees in the direction of the arrow, the lifter device (48) is lowered to make the height of the receiving platform (47) and the conveyor device (25) the same, and the endless chain ( 26) and the endless chain (26) of the conveyor device (25).
) in the same direction, the part (Ka) will move to the turntable (24).
) Conveyor device (25) from above.

The conveyor device (25) is the conveyor device (25) on the right side mentioned above.
It has the same structure as 2), but consists of two conveyors (51) (52) running in parallel with different lengths, and each conveyor (51) (
52) consists of a connected body of a transfer table (53) having the same structure as the transfer table (45) of the overhead conveyor device (23) (that is, it has an endless chain (26) for transporting parts).

Since the parts supply device of this embodiment is as described above, when preparing for a four-door vehicle, the picking carts (6) and (7) are moved from the home position to the respective racks (2) based on the vehicle type information. The robot moves to the corresponding row position in (3), picks the parts (W) from the first and second pallets (P), and takes them into the mobile picking device (15).

At this time, the mobile picking device (15)
) is installed on the trolley (14
), stops at the position where the presence of parts is detected, and starts the picking operation, so there is no problem even if the number of parts stored on each pallet (P) is different, and vice versa. By making different numbers of parts (i.e., front doors and rear doors for the same product type) stored in each pallet (P), the first and second pallets for the same product type By varying the emptying timing, the replenishment timing of actual pallets from the rear racks (4) and (5) by the stunker cranes (11) and (12) can be staggered, making it possible to use a small number of stunker cranes (11).
(12) However, it has many storage compartments in the front and back.
Empty and real pallets can be exchanged between ranks (2), (3), (4), and (5) without waiting time.

The 1.2 stage mobile picking device (15) that has taken in the part (W) returns to its original position on the trolley body (14) while the picking trolleys (6) and (7) return to their home positions. , when the trolley (6) (7) reaches the home position, the receiving platform device (28) (41)
The positions of the receiving tables (27) (39) aligned in the vertical direction and the positions of the mobile picking devices (15) on the trolleys (6) (7) are aligned in the horizontal direction as shown in the second figure. As described above, the parts (W) on the picking carts (6) and (7) are transferred to each receiving platform device (28) and (41), and then to the next elevator device! (32) (44
).

After that, the first stage component, that is, the rear door, and the second stage component, that is, the front door, are connected to the receiver device (2B).
(41) First stage traverse type receiving stand (27) (3
9), and the elevator equipment (32) and (44) cause the vertical phase to be shifted, so that in ranks (2) and (3), the top and bottom are stored in separate stages. The front and rear door parts, which had been previously stored, are placed side by side on the left and right at the same height, making them easy to transport, and are delivered to the turntables (21) and (24).
Two long and short conveyors (36) with different end positions after the direction is changed 90 degrees by the turntable (21) (24)
(37), (51), and (52) to the respective predetermined positions on the assembly line (1), and conveyors (36), (37), (51), and (52).
) The parts (W) that have reached the respective predetermined positions at the end are pink-amplified and assembled by workers onto the main body flowing through the assembly line (1) in the order along the flow of the assembly line (1).

In addition, when preparing for a two-door vehicle, a picking trolley (
6) (7) selects each rack (2) based on the vehicle type information.
) The third pallet (P) at the corresponding column position in (3)
Pick the parts (W) from inside, then return to the home position, and deliver the parts (W) to the third receiving stand (27) (39) of the receiving device (2B) (41), respectively. The right-hand door is lowered to the first stage height by the next elevator device (32) and sent to the turntable (21), and the left-hand door is moved over to the top while maintaining the third stage height. 111j (23) and is also sent to the turntable (24).

Therefore, the parts (11) discharged from the turntables (21) (24) and sent to the conveyor devices (22) (25)
) is located at the front of the assembly line (1) by the longer conveyors (36) and (51) on both the left and right sides! be transferred to.

Note that the picking carts (6) (7) in the above embodiments
) the mobile picking device (15) is movable;
Since the picking operation is performed while inspecting the presence or absence of parts, it has the advantage of being able to shift the timing at which empty pallets occur as described above, but the picking trolley (6)
(7) The picking device mounted on the top is fixed to the trolley, and the parts in the pallet (P) are picked up by the trolley (6).
) (7) The device itself may move to pick parts.

Further, receiving tables (27) (39) constituting the mobile picking device (15) and the transport device (8) (9),
The endless chain (20) (26), which is a means for transferring parts (W) such as the transfer table (38) (53), may of course be an endless belt, or may be another transfer means such as a series of rollers. It may be.

〔Effect of the invention〕

As is clear from the above description, by using the component supply device according to the present invention, even if the target component is bulky and heavy, it can be applied to an assembly line and easily realize a marshaling supply system.

[Brief explanation of drawings]

FIG. 1 is a perspective view of the entire parts supply device according to the present invention;
Figure 2 is a plan view of the same, and Figure 3 is an elevational view showing the structure of the rack.
It is an elevational view taken along the lines ■-■, V-V, Vl-Vl, and ■-■ in the figure. (1) --- Assembly line (2) (3) --- Rack (6) (7) --- Picking cart (8) (9) --- Conveyance device (15) --- Mobile picking device ( 1B) (19) --- Parts receiving device (21) (24)
) -... Turntable (22) (25)... Conveyor device (23) -, t
--Bar head conveyor device (W)... Plate-shaped parts (P)... Pallet

Claims (1)

[Scope of Claims] A rack that stores pallets containing a plurality of plate-shaped parts in multiple stages and rows of storage compartments, and a rack that runs along the rack and picks up the plate-shaped parts from at least two or more storage compartments. A method for handling parts on an assembly line, comprising a picking cart for picking parts, and a conveying device for receiving a plurality of plate-shaped parts discharged from the picking cart and transporting them to different points on the assembly line. Feeding device.