JP2692414B2 - Equipment for loading and unloading trays - Google Patents

Description

DETAILED DESCRIPTION OF THE INVENTION

[0001]

BACKGROUND OF THE INVENTION 1. Field of the Invention The present invention relates to a tray which is arranged around an automated warehouse and is used for placing a load on a tray (pallet) or unloading a load from the tray. It relates to unloading equipment.

[0002]

2. Description of the Related Art Conventionally, when placing or unloading a load on a tray (pallet), the load is laterally pushed by a pusher device while the tray is positioned, or the load is lifted by a clamp device. It was done by a format such as transfer.

[0003]

However, according to the above-mentioned lateral push type, since the load slides on the tray, when the load is packed with a weak material such as cardboard,
The sliding friction may damage the cardboard.
In addition, according to the clamp type, the clamp device itself is large and expensive, and since the movement is complicated, efficient work cannot be performed, and furthermore, the corrugated board is damaged by the clamp force.

An object of the present invention is to provide an equipment for unloading and loading trays, which has a simple and inexpensive structure and can efficiently load and unload loads on trays without damaging the loads. In point.

[0005]

In order to achieve the above object, the equipment for loading and unloading a tray according to the present invention has a tray on which a load can be placed and a large number of holes are formed, and the tray can be supported. A first transfer conveyor and a second transfer conveyor capable of supporting a load are arranged side by side, and a first transfer conveyor that can be moved up and down through the hole of the tray is provided on the first transfer conveyor, and can be moved up and down on the second transfer conveyor. The second transfer conveyor is provided, and the transfer direction of these transfer conveyors is configured to be orthogonal to the transfer direction of the transfer conveyor, and the lateral pushing device that acts on the load in the transfer direction of the transfer conveyor is provided. .

[0006]

According to the structure of the present invention, when the load is unloaded from the tray, the tray supporting the load is first stopped on the first conveyor so as to face the first transfer conveyor and the lateral pushing device. The first transfer conveyor is then lifted and lifted through the holes in the tray to lift the load on this tray and the second transfer conveyor to the same level as the first transfer conveyor.

[0007] Then, the lateral pushing device is moved so as to exert a lateral pushing force on the load, whereby only the load is moved from the first transfer conveyor to the second transfer conveyor. Then, the load can be unloaded on the second transfer conveyor by lowering the second transfer conveyor, and can be transferred on the second transfer conveyor. At this time, the lateral pushing device is retracted and the first transfer conveyor is lowered, so that the empty tray can be conveyed on the first conveyor.

In order to load an empty tray, the load is first stopped on the second transfer conveyor opposite to the second transfer conveyor and the lateral pushing device, and the empty tray is first moved on the first transfer conveyor. Stop facing the delivery conveyor. Then, the second transfer conveyor is lifted to lift the load, and the first transfer conveyor is lifted to the same level as the second transfer conveyor through the holes of the tray.

Then, the lateral pushing device is moved so as to exert a lateral pushing force on the load, whereby the load is moved from the second transfer conveyor to the first transfer conveyor. Thereafter, the load can be unloaded on the tray by lowering the first transfer conveyor, and thus the actual tray can be transferred on the first transfer conveyor. At this time, the lateral pushing device is retracted and the second transfer conveyor is lowered.

[0010]

DETAILED DESCRIPTION OF THE PREFERRED EMBODIMENTS One embodiment of the present invention will be described below with reference to the drawings. In FIG. 5, reference numeral 1 denotes an automated warehouse, and a pair of shelves 3 arranged with a passage 2 provided therein has a large number of storage spaces 4 in the vertical and horizontal directions. These storage spaces 4 are configured to store a load 6 via a tray (pallet) 5. Numeral 7 is an entry / exit place arranged outside one end of the shelf 1.
A loading cart 8 that can support the tray 5 from below is movably arranged in the length direction of the shelf 3. In the passage 2, there is provided a loading / unloading device 10 that can travel on a fixed path 9 along the shelf 1 and the loading / unloading area 7.

The loading / unloading device 10 is provided with a traveling body 11 supported and guided by floor rails via wheels, and a pair of front and rear erected on the traveling body 11 and the upper end side thereof is guided by a ceiling rail (not shown). Posts 12, lifts 13 guided by these posts 12, multi-stage fork-type loading / unloading tools 14 that are arranged on the lifts 13 and can freely move in and out in the lateral direction, and control the running and operation of the loading / unloading tools 14. In order to do so, it is composed of a traveling-side control device 15 attached to the traveling machine body 11 and the like, and transfers the tray 5 between the storage space 4 and the cargo carrier 8. Here, the tray 5 has a rectangular plate shape and is divided into a checkerboard shape to form a large number of rectangular holes 16 (see FIG. 1).

In the automated warehouse 1 having the above-mentioned structure, a plurality of the warehouses 7 are arranged side by side with their outer ends aligned, and the transfer path 21 of the transfer device 20 extends outward from the outer ends. It is formed. The transport path 21 has an elliptical shape, and one of the parallel path portions is formed across the outside of the outer end of the loading / unloading place 7 group. The carrier device 20 is of a self-propelled carriage type, and a tray 5 is provided between the cargo carrier 8 and the main body 22 of the carrier device 20.
A transfer device 23 is provided that can be handed over.

An unloading device 28 for unloading and an unloading device 29 for loading are provided on the outer side of the other parallel path portion of the transport path 21. These loading and unloading devices 28 and 29 have the same structure. The details of the loading and unloading device 28 will be described below with reference to FIGS. 1 to 3, and the loading and unloading device 29 (see FIG. 4). The details of () are omitted.

Reference numeral 30 denotes a carry-in conveyor which is capable of receiving the tray 5 from the carrying device 20, and is arranged at a right angle to the carrying path 21 with its start end facing the carrying path 21.
The carry-in conveyor 30 includes a machine frame 31 and a large number of drive rollers 32. 33 is tray 5 to the transfer device 20
Is a carry-out conveyor that can be freely passed over, is parallel to the carry-in conveyor 30, and is composed of a machine frame 34, a large number of drive rollers 35, and the like.

Reference numeral 36 is a first conveyor that serves as a relay conveyor in which the free ends of the carry-in conveyor 30 and the carry-out conveyor 33 are connected to each other. It is composed of a driving roller 38 and the like. At the starting end of the first transfer conveyor 33, the carry-in conveyor 30
A retracting device 39 capable of retracting the tray 5 from the above is provided, and a pushing device 40 capable of pushing the tray 5 into the carry-out conveyor 34 is provided at the end.

The above-mentioned 30 to 40 constitute the above-mentioned handling apparatus 28. An empty tray stacking device 45 for stacking empty trays 5 is disposed in the middle of the carry-out conveyor 33 in the unloading and handling device 28, and in the unloading and handling device 29. An empty tray disassembling device 46 for disassembling the stacked empty trays 5 is arranged in the middle of the carry-in conveyor 30.

A second conveyor 48 is arranged along the outside of the first conveyor 36, and the second conveyor 48 is provided.
Is composed of a machine frame 49, a large number of drive rollers 50, and the like. Then, the first transfer conveyor 51 which can be raised and lowered through the hole 16 of the tray 5 at the intermediate portion of the first transfer conveyor 36.
In addition to the above, a second transfer conveyor 52 is provided at the end of the second transfer conveyor 48, which is vertically movable. These transfer conveyors 51 and 52 are provided with an elevating body 53 guided by a guide device 57 and a cylinder device 54 for elevating the elevating body 53.
And a free-running roller 56 provided above the lifting body 53 via a bracket 55.

Here, a plurality of idle rollers 56 are arranged in two rows in the width direction of the first conveyor 36 and the second conveyor 48 and at predetermined intervals in the conveyor direction. The operation of 54 is configured to pass through the drive rollers 38 and to move back and forth. Further, the transfer direction of these transfer conveyors 51, 52 is configured to be orthogonal to the transfer direction of the first transfer conveyor 36.

The first in the unloading and handling device 28 for unloading
On the inner side of the transfer conveyor 36, the first transfer conveyor 51
The first transfer conveyor 51 for the load 6 lifted by
A lateral pushing device 60 is provided which acts in the transport direction of the. On the side of the loading / unloading device 29 for loading, the second conveyor
A lateral pushing device 61 that acts on the load 6 lifted by the second transfer conveyor 52 in the transport direction of the second transfer conveyor 52 is provided on the outer side of 48. These side pushing devices
60 and 61 are of a pusher type composed of a cylinder device 62 and a lateral push plate 63.

The operation of the above configuration will be described below.
In order to take out the load 6 stored in the automatic warehouse 1 through the unloading and handling device 28, first, a predetermined automatic warehouse 1
The loading / unloading device 10 is operated to load the actual tray 5 from the intended storage space 4 onto the loading cart 8. Next, the cargo carrier 8 is moved to the outer end side and stopped at the side of the transport path 21. Then, with the carrier device 20 on the carrier path 21 stopped at the side of the cargo carrier 8, the actual tray 5 on the cargo carrier 8 is moved onto the carrier device 20 by the operation of the transfer device 23.

In this state, the transport device 20 is made to travel on the transport path 21, and the carry-in conveyor in the unloading device 28 for unloading.
Stop at the beginning of 30. Then, the actual tray 5 on the transfer device 20 is transferred to the transfer conveyor 30 by the operation of the transfer device 23.
Move to the beginning. The actual tray 5 is conveyed to the end by the carry-in conveyor 30, and is transferred to the start end of the first conveyer conveyor 36 via the retracting device 39.

Next, the actual tray 5 is transferred to the first transfer conveyor 36.
And is stopped by facing the first transfer conveyor 51 and the lateral pushing device 60. At this time, both transfer conveyors 51 and 52 are lowered, and the idle rollers 56 are located below the drive rollers 38 and 50. In this state, the first transfer conveyor 51 is moved upward. That is, the cylinder device 54 is actuated to raise the idler rollers 56 group through the elevating body 53, and the idler rollers 56 are moved from between the drive rollers 38 to the holes 16 of the tray 5.
Then, the load 6 on the tray 5 is lifted by the group of idle rollers 56. Further, the second transfer conveyor 52 is similarly moved up to the same level as the first transfer conveyor 51.

Then, the lateral pushing device 60 is moved so as to project, and the lateral pushing plate 63 that projects is brought into contact with the side surface of the load 6 to exert a lateral pushing force. As a result, only the load 6 is transferred to the second transfer conveyor from above the idle rollers 56 of the first transfer conveyor 51.
The 52 idle rollers 56 are moved onto the group. Thereafter, the load 6 can be unloaded on the second transfer conveyor 48 by lowering the second transfer conveyor 52 in the reverse operation to the above. At this time, the lateral pushing device 60 is retracted, and the first transfer conveyor 51 is lowered, so that the empty tray 5 can be conveyed on the first conveyor 36.

The empty tray 5 which has reached the end of the first transfer conveyor 36 is pushed by the pushing device 40 into the starting end portion of the carry-out conveyor 33, and stopped after facing the empty tray stacking device 45. The empty tray stacking device 45 is stacked and stored. The group of trays 5 stored in the empty tray stacking device 45 is unloaded on the carry-out conveyor 33 according to a request from the empty tray stacking device 46, and then the empty tray stacking device is transferred via the transfer device 20.
It is transported to 46.

Next, the load 6 transferred by the transfer conveyor 48
The following describes the operation of loading the trays 5 on the tray 5 through the loading and unloading device 29 and then loading them into the automatic warehouse 1. First, the load 6 is transported by the second transport conveyor 48, and is stopped while facing the second transfer conveyor 52 and the lateral pushing device 61.
At this time, the second transfer conveyor 52 is lowered, and the idler roller 56 is located below the drive roller 50.

At the same time, one empty tray 5 among the trays 5 stored in the empty tray disassembling device 46 is disassembled and placed at the starting end of the carry-in conveyor 30. This empty tray 5 is conveyed to the end by the carry-in conveyor 30 and then via the retracting device 39 the first conveyor 36.
Moved to the beginning of. Next, the empty tray 5 is transported by the first transport conveyor 36, and is stopped facing the first transfer conveyor 51. At this time, the first transfer conveyor 51 is lowered, and the idler roller 56 is located below the drive roller 38.

In this state, the second transfer conveyor 52 is moved upward. That is, when the cylinder device 54 is actuated, the group of idle rollers 56 is raised via the elevating body 53, the idle rollers 56 are raised through the drive rollers 50, and the load 6 is lifted by the idle rollers 56. Further, the first transfer conveyor 51 is likewise moved upward to move the idler roller 56 to the drive roller 38.
From the space through the hole 16 of the tray 5, it is raised to the same level as the second transfer conveyor 52.

Then, the lateral pushing device 61 is caused to project, and the lateral pushing plate 63 projecting therefrom is brought into contact with the side surface of the load 6 to exert a lateral pushing force. As a result, only the load 6 is transferred from the group of idle rollers 56 of the second transfer conveyor 52 to the first transfer conveyor.
It is moved to a group of 51 idle rollers 56. Thereafter, the load 6 can be unloaded on the tray 5 by lowering the first transfer conveyor 51 in the reverse operation to the above, and thus the actual tray 5 can be transferred on the first transfer conveyor 36. At this time, the lateral pushing device 61 is retracted and the second transfer conveyor 52 is lowered.

The actual tray 5 that has reached the end of the first transfer conveyor 36 is pushed by the pushing device 40 into the starting end of the carry-out conveyor 33, and is transferred to the end of the carry-out conveyor 33. At this time, the transfer device 20 travels on the transfer path 21 and is stopped so as to face the end of the carry-out conveyor 33.
Therefore, the actual tray 5 on the carry-out conveyor 33 is transferred onto the transfer device 20 by the operation of the transfer device 23.

In this state, the carrier device 20 is caused to travel on the carrier path 21 and stopped at the side of the cargo carrier 8 of the target automated warehouse 1. Then, by the operation of the transfer device 23, the transfer device 20
The upper actual tray 5 is transferred onto the receiving cart 8. Next, the loading cart 8 is moved to the inner end side, and then the loading / unloading device 10 is operated to put the actual tray 5 on the loading cart 8 into the intended storage space 4.

[0031]

According to the present invention having the above-mentioned structure, the first transfer conveyor is lifted through the holes of the tray, and the second transfer conveyor is lifted to the same level as the first transfer conveyor by the lateral pushing device. By applying a lateral pushing force to the load, only the load can be moved between the transfer conveyors without sliding the load against the tray.

Therefore, by lifting the load on the tray when moving up through the hole of the tray, or by unloading the load on the tray when moving down through the hole of the tray, the load on the tray can be reduced even though the structure is simple and inexpensive. Loading and unloading can be performed efficiently without damaging the load, and particularly when the load is packed with a weak material such as corrugated cardboard, the unloading can be suitably performed.

[Brief description of the drawings]

FIG. 1 is a perspective view of an unloading and handling device unit according to an embodiment of the present invention.

FIG. 2 is a vertical cross-sectional view of a main part of the unloading and handling device section for unloading.

FIG. 3 is a schematic plan view of an unloading and handling device section for unloading the same.

FIG. 4 is a schematic plan view of the loading / unloading device section for loading the same.

FIG. 5 is a schematic plan view of the whole including the automatic warehouse.

[Explanation of symbols]

 1 Automatic warehouse 4 Storage space 5 Tray 6 Load 8 Carrying trolley 10 Loading / unloading device 16 Hole 20 Transport device 21 Transport route 28 Unloading device for unloading 29 Loading device for loading 30 Carry-in conveyor 33 Carry-out conveyor 36 1st transfer Conveyor 48 Second transfer conveyor 51 First delivery conveyor 52 Second delivery conveyor 60 Side pushing device 61 Side pushing device

Claims (1)

(57) [Claims] 1. A tray on which a load can be placed and which has a large number of holes is provided, and a first conveyor that can support the tray and a second conveyor that can support the load are arranged in parallel, and The first transfer conveyor is provided with a first transfer conveyor that can be moved up and down through the holes of the tray, and the second transfer conveyor is provided with a second transfer conveyor that can be moved up and down, and the transfer direction of these transfer conveyors is the transfer direction of the transfer conveyor. An equipment for loading and unloading trays, which is configured to be orthogonal to each other and is provided with a lateral pushing device that acts on the load in the conveying direction of the transfer conveyor.