JPS5835898B2 - Storage system for transported goods in conveyor transport system - Google Patents

Description

DETAILED DESCRIPTION OF THE INVENTION The present invention relates to a storage system for conveyed goods in a conveyor conveyance system that uses mole rails placed on the ceiling of factories, automated warehouses, etc. to transport workpieces or articles from a place to a destination place. The present invention relates to a new and useful storage system that is particularly effective when applied to cases where a work or article has a large number of specifications and the work or article must be supplied in accordance with the needs of the next process. It is something.

Conventionally, the above type of storage system, for example, a storage system used when it is necessary to supply workpieces with a large number of specifications according to the needs of the next process, is explained using body side storage in an automobile body assembly process as an example. In Fig. 1 showing the management system, ■ indicates a main line having a line flow in the direction of arrow A, ■ indicates a body side storage line arranged symmetrically on both sides of the main line, and ■ indicates a body side line. Works 1 to 10 such as the floor or main body run on the main line I, and works 11 to 14 such as the body side run on the storage line ■, and further on the body side line ■. , other body side works 15 to 17 run, and according to this order management system, the body side works are run according to the order of specifications ○, ×, Δ, etc. of works 1 to 10 on the main line I. 11-14.15-17 (○, ×
, Δ marks) are produced, and these body sides are stored and transported on the main line I without changing the order so that the specifications (○, ×, Δ marks) of the works coincide with each other in sign.

For this reason, in the above-mentioned order management system, there is no freedom at all on the body side line unless the workpieces are produced in the order specified on the main line, so even the slightest mistake cannot be tolerated. ■, storage line ■ and main line I for works 1 to 7
If the work is scrapped, the order of the main line and the body side will be disrupted, making it necessary to replace the work, and furthermore, unless the order of the main line I is clear, production of the body side will be interrupted. Since this is possible, the amount of storage is limited, and when the main line is stopped, the body side line must also be stopped.

On the other hand, in Figure 2 showing the lane management system, 1 to
10 is the work (floor or main body) on the main line I as before, 21 is the body side that connects to the main body 6, 22-36 is the body side specified by each line of storage lane ■, 37-39 indicate the workpieces (body sides) on the body side line ■, and in such a lane management system, body sides 37 to 39 produced on the body side line ■ correspond to each line of the storage line ■. Body sides (○, ×, △ marks) required for the main line I are carried out from a predetermined storage line and supplied to the main line.

For this reason, in the lane management system described above, when the number of vehicle types increases, additional lanes are required, and when the number of vehicle types decreases, there are unnecessary lanes that are not used at all, and furthermore, the production ratio of vehicle types decreases. If there is a change, storage lanes may be short even though the number of vehicles produced has increased, or conversely, storage lanes may be long even though the number of vehicles produced has decreased, resulting in the disadvantage that efficient operations cannot be achieved. .

In contrast, the present invention proposes a storage system for conveyed articles using a conveyor conveyance method that can eliminate the above-mentioned drawbacks. A storage system in which a workpiece or article is carried into one storage device and carried out from there according to the needs of the next process, and is provided with a rotating device having a rotating rail and a drive unit for the rotating rail, and the rotating device This invention consists in that a plurality of branch storage rails and carrying-in and carrying-out rails are provided around the radial direction.Thus, according to the present invention, workpieces with the specification of carrying-in can be moved to any direction. It can be stored in an empty seat position, and if the work meets the needs of the next process, it can be carried out no matter where it is in the rotary storage device, so it depends on the needs of the next process. It is possible to perform supply-line production with less and a high degree of freedom, and it is also possible to easily deal with differences in specifications caused by workers, and to respond flexibly to increases and decreases in specifications. This has the advantage of being able to maintain the highest operating efficiency even if the production ratio of each specification changes.

Next, the present invention will be explained in more detail with reference to an embodiment shown in FIGS. 3 to 18.

First, a rotary storage device for implementing the system of the present invention is shown in FIGS. 3 and 4, and the storage device 40 has a rotating device 41, which has a rotating rail 43 and a drive for the rotating rail. part 42 (Fig. 5), and the rotating rail 43 is equipped with an electric trolley 4 having self-traction force.
4 is hanging.

The rotating device 41 includes an inner circular frame 47 with a channel-shaped cross section that is concentrically attached to the lower beam member 45 via an inverted T-shaped support plate 46 that is arranged in the diametrical direction, and a plurality of sets of An outer circular frame 49 is integrally formed on the same plane with a connecting plate 48 interposed therebetween, and a center post 50 is provided at the center of the lower beam member to freely move inside the inner circular frame. A pivotable girder 51 is pivotally mounted on the girder, and a pair of rollers 52 and 53 running on the upper surface of the inner circular frame are disposed opposite to each other at both free ends of the girder.

As shown in FIGS. 5 and 6, the drive unit 42 is provided with a swing arm 55 whose one end is pivotally connected in the radial direction to the center of the swing girder 51 via a hinge mechanism 54. , a drive motor 56 to be installed on the arm.
, an electromagnetic clutch 57 and a drive shaft 58 are drivingly connected to each other, and in this case, a drive roller 59 that frictionally rotates on the upper surface of the inner circular frame 47 is provided at the outer end of the first drive shaft 58. A driven roller 60 for take-up is provided on the lower side of the inner circular frame via a swing lever 61 and a coil spring 62 so as to always elastically press the lower surface of the frame.

Furthermore, the stopper mechanism 63 of the rotating device 41 shown in detail in FIGS. 7 and 8 is installed at both ends of the swing girder 51, and mainly consists of a stopper pin 64 having a tapered tip. , a fluid pressure cylinder 65, a cross-shaped fixed guide 66, and a movable plate 67, and the outer part of the stopper pin is loosely fitted into a connecting member 68 that connects the end side edge of the revolving girder. , the central part of the pin passes through the fixed guide, the inner part of the pin is fixed to the movable plate, and a coil spring 70 is interposed between the fixed guide and the stepped pin part 69,
This causes the stopper pin to retreat in the radial direction against the springing force and move forward due to the restoring action of the springing force.

The fluid pressure cylinder 65 is attached to a fixed guide 66, and a fitting 73 for pressing a movable plate 67 is provided at the tip of a piston rod 72 to which a bellows 71 is attached. left direction)
This causes the movable plate and therefore the stopper pin 64 fixed to the plate to move backward, and the inner circular frame 47 corresponding to the stopper pin moves backward.
A tapered four-gate hole 74 into which the tip of the pin is fitted is bored in the side surface of the pin.

Further, as shown in FIG. 4, the swing rail 43 is integrally hung below the swing girder 51 via a hanging member 75, and the swing rail 43 is provided below the outer circular frame 49. For example, 30 branch storage rails 77 are provided in the radial direction at a pitch of 12° via hanging members 76, and when the swing rail 43 rotates, these can be used as arbitrary branch storage rails and loading/unloading rails. The electric trolley 44, which is connected to the motor 78 and runs on these rails, suspends and supports a driving vehicle 80, a driven vehicle 81, and a workpiece W, which are mainly driven by a motor 79 which is well known in itself. It consists of a traverser 83 and the like to which a hanger member 82 is attached.

Next, the rotary storage device 40 having the above configuration
To explain the system of the present invention using body side storage in the car body assembly process as an example, in FIGS. 9 and 10, for example, the body side W produced on the body side line (■ in FIGS. 1 and 2) is suspended rearward (or forward) by a hanger member 82 and is run in the direction of arrow A on the loading rail 78 of the storage line (n, rv in FIGS. 1 and 2) by the electric trolley 44. It advances to the turning rail 43 integrally formed with the turning girder 51 of the rotating device 41 forming the rotary storage device and stops.

Next, by driving the motor 56 of the drive unit 42, the rotating girder 51 to the rotating rail 43 are rotated by friction with the inner circular frame 47 serving as a fixed rail via the electromagnetic clutch 57 and the drive shaft 58. Or, it rotates in the C direction, and is divided into two by X-X rays in advance to create 1800 storage zones Z1. z2
Vacant branch storage rail (1) divided into sections.

In (3), (16) or (5), the body side is retracted by retracting or advancing the electric truck in the radial direction, and the loading is completed (FIGS. 11 to 14).

In this case, the stopper pins 64 provided at both ends of the swing girder 51 are useful for positioning the swing rail 43 and the inner circular frame 47 serving as the fixed rail, and the pins are inserted into the locating holes 74. At the time of insertion, the driving part 42 is released by the electromagnetic clutch 57 and the position is regulated by the wedge action of the pin, and all of the stored side bodies W are made to face backward (or forward) to coincide with the direction of movement.

On the other hand, the removal of the side body W is as shown in Fig. 15.
If the main line requests the side body W marked with a circle, the position where the side body is present (5
) Turn the swing rail 43 counterclockwise (or clockwise) until
After the side body is rotated to the position shown in FIG. 16, the side body is carried up to the turning rail 43, and then the said turning rail is rotated clockwise (or counterclockwise) to the state shown in FIG. 17. Then, as shown in FIG. 18, the ID body W marked with a circle is transported from the storage position to the main line via the transport rail 78.

In the embodiments described above, the loading/unloading cycle for storage of side bodies in an automobile body assembly process was explained as an example, but the present invention is not limited to this and can be applied to side bodies of different vehicle models or articles. Of course, if the rotary storage device is used with other transported articles, various types of loading and unloading cycles can be implemented.

[Brief explanation of drawings]

1 and 2 are explanatory plan views showing a conventional order management system and lane management system, FIG. 3 is a plan view showing a rotation device of a rotary storage device in the system of the present invention, and FIG. 4 is a front view thereof. , FIG. 5 is a front view of the drive section of the device, FIG. 6 is an end view thereof, FIG. 7 is a cutaway front view showing the stopper mechanism of the device, FIG. 8 is a side view thereof, and FIG. 9 is a vehicle body. FIG. 10 is a schematic perspective view showing the system of the present invention relating to body side storage, FIG. 10 is a plan view thereof, and FIGS. 11 to 18 are plan views showing the operation progress of the system of the present invention. Note that the correspondence relationship between the main parts shown and the symbols is as follows. 40... Rotary storage device, 41... Rotating device, 42... Drive unit, 43... Swivel rail, 44
...Electric trolley, 47...Inner circular frame, 49.
...Outer circular frame, 51...Swivel girder-55.
...Swivel arm, 56...Drive motor, 57...
Electromagnetic clutch, 59... Drive roller, 60... Driven roller 63... Stopper mechanism, 64... Stopper pin, 65... Fluid pressure cylinder, 77...
- Branch storage rail, 78... Loading and unloading rail, W... Work or article.

Claims (1)

[Claims] 1. A storage system that transports workpieces or articles with multiple specifications into one storage device, and from which the workpieces or articles are carried out according to the needs of the next process, which includes a swing rail and a drive unit for the swing rail. What is claimed is: 1. A storage system for conveyed articles using a conveyor conveyance system, characterized in that a rotating device having a rotary device is provided, and a plurality of branch storage rails and carrying-in and carrying-out rails are provided around the rotating device in a radial direction.