JPH10152208A - Load conveyor - Google Patents

Abstract

PROBLEM TO BE SOLVED: To convey a plurality of loads at the same time and perform continuous warehousing and delivery work so as to improve the efficiency of warehousing and delivery work by providing a load conveyor with load stock mechanism that delivers loads to be transferred between fork mechanism and warehousing and delivery stations. SOLUTION: A stacker crane 6 for warehousing-delivery work serving as a load conveyor between shelves and warehousing and delivery stations can receive up to four loads continuously from the warehousing station. After receiving one load on fork mechanism 2 and three other loads on load stock mechanism 1a-1c, the stacker crane 6 travels and moves "successively into rack positions assigned as warehousing shelves by elevating action to warehouse the loads into the shelves using the fork mechanism 2. In case of receiving a delivery instruction, loading from the instructed shelves is repeated in regular order to load up to four loads at the same time. The loads are delivered one after another upon the return of the stacker crane 6 to the delivery station.

Description

DETAILED DESCRIPTION OF THE INVENTION

[0001]

BACKGROUND OF THE INVENTION 1. Field of the Invention The present invention relates to a luggage carrier.

[0002]

2. Description of the Related Art In a stacker crane and a transporting trolley for loading and unloading work used in a conventional automatic warehouse, means for traveling a traveling crane between left and right shelves for storing luggage and moving up and down in the height direction of the shelves. And a fork mechanism for transferring luggage to and from the shelves. In addition to the fork mechanism, there is provided a means for stocking luggage and a means for transferring luggage to and from the loading / unloading station. Generally not. For that reason, the stacker crane and the transport trolley for loading and unloading work can only perform loading and unloading of luggage in units of one piece of luggage. It is necessary to move and raise and lower a stacker crane and a transport trolley.

[0003]

In the conventional stacker crane and transporting trolley for loading and unloading, there is no means for loading and unloading a plurality of loads on a shelf. It is necessary to move the stacker crane for loading and unloading work and the transport trolley up and down as many times as possible, and if the running path is long, this running time becomes a problem when shortening the loading and unloading time. , It is necessary to shorten the lifting time.

According to the present invention, separately from a fork mechanism, a luggage received from a fork mechanism is temporarily stored in a stacker crane or a transport trolley for loading and unloading work, and further, the luggage is wholesaled at a unloading station. Equipped with a means for receiving luggage from the station, temporarily stocking the luggage, and passing the luggage to the fork mechanism when necessary, providing efficient warehouse entry / exit operations and energy savings for automatic warehouse systems that realize energy-saving operations. An object of the present invention is to realize a work stacker crane and a transport trolley.

[0005]

In order to simultaneously transport a plurality of loads in a loading / unloading work stacker crane, a transport trolley or the like, a stock means capable of storing the loads in addition to the fork mechanism. In addition, it is necessary to provide a means for transferring the temporarily stocked luggage between the fork mechanism and the loading / unloading station.

According to the first aspect of the present invention, the luggage taken out of the shelf is received and temporarily stocked by the fork mechanism, and the luggage is returned when the loading / unloading work stacker crane or the transport vehicle returns to the unloading station. Conversely, after receiving the luggage from the storage station and temporarily stocking it, a fork for storing the luggage on the shelf in accordance with the arrival of the loading / unloading work stacker crane or the transport trolley to the receiving shelf. Providing the mechanism with a means for delivering the luggage makes it possible to efficiently carry out the loading / unloading operation of a plurality of luggage at the same time.

According to the second aspect of the present invention, the luggage is transferred between the shelf and the loading / unloading station by the fork mechanism, and the luggage is transferred to and from the fork mechanism to temporarily store the luggage. By providing a stock mechanism capable of storing, it is possible to simultaneously transport a plurality of packages, and it is possible to improve the efficiency of loading and unloading work.

In order to improve the efficiency of the automatic warehouse system as a whole, it is necessary to shorten the time for loading and unloading goods using a stacker crane for loading and unloading work and a transport trolley.

According to the first aspect of the present invention, a stacker for loading and unloading work and a transport trolley are provided with a stocking means for a plurality of loads, and a means for enabling delivery of loads between the fork mechanism and the loading and unloading station. In preparation. this is,
It is possible to receive a plurality of packages at the storage station and store the packages on multiple shelves, or conversely, take out packages from multiple shelves, transport the packages to the discharge station, and sequentially discharge to the station. By realizing such a loading / unloading operation, it is possible to shorten the loading / unloading time as compared with the related art. The effect of shortening the entrance / exit time becomes greater as the traveling lane is longer.

Further, according to the present invention, one traveling forward,
By moving back and forth, and raising and lowering, it is possible to store or retrieve a plurality of packages, so that a conventional stacker crane or transport trolley for loading and unloading work that performs actual operation of traveling and lifting and lowering for each package In addition, energy saving is achieved, and the operating distance for traveling and elevating is reduced, so that the life of the device can be made longer than before.

[0011]

DETAILED DESCRIPTION OF THE PREFERRED EMBODIMENTS An embodiment according to the present invention will be described below with reference to FIGS. FIG.
1a to 1c, a luggage stock mechanism having a mechanism for temporarily storing luggage and for transferring a luggage to and from a fork mechanism and a loading / unloading station, and a fork for transferring luggage between shelves and between the luggage stock mechanism and the luggage. The mechanism 3 is an elevating device for raising or lowering the fork mechanism 2 according to the height of the shelf for loading and unloading the luggage, the traveling device 4 for traveling the luggage carrier to the target shelf position, the reference numeral 5 is A lifter device for moving a plurality of luggage stock mechanisms up and down, 6 a stacker crane for loading and unloading work as a luggage transport device between a shelf and a loading and unloading station, 10
Is an onboard control panel. In FIG. 2, reference numerals 7a and 7b denote racks for temporarily storing and storing luggage, 8 denotes a storage station used when storing luggage, and 9 denotes an exit station used when unloading luggage.

According to this configuration, the loading / unloading work stacker crane 6 can receive up to four pieces of luggage continuously from the loading station 8, and one of the fork mechanism 2
On top, the other three are loaded with luggage stock mechanisms 1a, 1b, 1
After being received on c, the rack 7 designated as a storage shelf
It is possible to sequentially travel and ascend and descend to the shelf positions a and 7b, and store the luggage on the shelf using the fork mechanism 2.

On the other hand, when a delivery instruction is issued to the loading / unloading work stacker crane 6, loading of up to four packages can be simultaneously performed by sequentially repeating loading of the packages from the designated shelf. When the stacker crane 6 for loading and unloading work returns to the unloading station 9,
It is possible to leave luggage.

When carrying out the loading and unloading operations, the traveling operation of the loading and unloading work stacker crane is one reciprocation from each station to the shelf at the forward end at the longest, and the lifting and lowering operation is from the lowermost stage to the uppermost stage. In one round trip to the destination, it can be carried out by moving while carrying out the delivery of the luggage on the destination shelf.

As a result, it is possible to reduce the number of times of traveling and lifting / lowering operations as compared with a conventional stacker crane for loading and unloading work in which loading and unloading work for each piece of luggage is repeated.

In the configuration of the present luggage carrier, the number of luggage stock mechanisms is arbitrary, and is determined by the length of the rack, the number of shelves, the cycle time for loading and unloading, and the like.

Next, the control configuration of the luggage carrier will be described with reference to FIG.

First, an incoming / outgoing command from a host is received by the on-board control panel 10 for controlling the operation of the incoming / outgoing work stacker crane, and then sequentially based on the command.
Each device and mechanism is operated to execute the loading and unloading work of the luggage.

First, the operation of each device and mechanism will be described by taking as an example a case where a command to store luggage from the storage station 8 to a target shelf in the racks 7a and 7b is issued to the stacker crane 6 from an upper level.

When a storage command is issued from the host, the stacker crane 6 controls the traveling device to travel to a position where the luggage can be delivered between the storage station 8 and the luggage stock mechanisms 1a to 1c and stop. I do. In a state where the luggage can be received from the storage station, the luggage stock mechanisms 1a to 1c are sequentially stopped at the height of the storage station 8 by controlling the lifter mechanism 5, so that the luggage is sequentially stored from the storage station 8. Receiving,
It stocks on the luggage stock mechanism 1a-1c. The baggage first received from the storage station 8 is transferred to the fork mechanism 2 from the baggage stock mechanism,
A total of four packages are loaded on the stacker crane 6. When loading of the luggage from the storage station 8 is completed, the traveling device 4 and the elevating device 3
First, the stacker crane 6 and the fork mechanism 2 are moved to the shelf designated for wholesale of the luggage loaded on the fork, and when the luggage is stopped at the target shelf, the luggage is transferred to the shelf. Perform wholesale operation. At the stage where the loading of the luggage on the fork is completed, the luggage is transferred between the luggage stock mechanisms 1a to 1c and the fork mechanism based on a command from the onboard control panel 10. When the next luggage for storage is delivered on the fork, the onboard control panel 10
Issues a command to move the stacker crane 6 to a target shelf. As described above, the on-board control panel 10 controls each device and mechanism in order to move the stacker crane 6 to the target shelf, wholesale the luggage from the fork mechanism to the shelf, and deliver the luggage from the luggage stock mechanism to the fork. In this example, it is possible to simultaneously carry up to four packages at the same time and continuously enter the warehouse.

Next, a case where a package is taken out of a shelf will be described as an example. When a high-order release command is issued, the on-board control panel 10
First issues a movement command to the traveling device 4 and the elevating device 3 to stop the stacker crane 6 and the fork mechanism 2 on the target shelf, and then controls the fork mechanism 2 to load luggage from the shelf. Do the work. Thereafter, the fork mechanism 2, the luggage stock mechanisms 1a to 1c, and the lifter mechanism 5 are controlled to carry out an operation of transferring the luggage from the fork mechanism 2 to one of the luggage stock mechanisms 1a to 1c. By moving the stacker crane to the target shelf and loading the luggage from the shelf, and repeating the transfer of the luggage between the fork mechanism 2 and the luggage stock mechanisms 1a to 1c, in this example, up to four luggage can be obtained. Can be loaded on a stacker crane.

The loaded luggage is simultaneously conveyed to the unloading station 9 and sequentially loaded luggage stock mechanisms 1a to 1c.
It is possible to leave luggage from.

An embodiment according to the second aspect of the present invention will be described below with reference to FIG. In FIG. 4, the delivery of the luggage to and from the loading / unloading station and the target shelf are all carried out by the fork mechanism 2, and the luggage stock mechanisms 1 a to 1 c for temporarily storing the luggage transfer the luggage to the fork mechanism 2 and load It only has a means for stocking, and does not carry out delivery of the luggage to the entry / exit station.
For this reason, a lifter mechanism for raising and lowering the luggage stock mechanisms 1a to 1c in the upward and downward directions is not required, and the configuration of the stacker crane 6 can be simplified.

First, the operation of each part will be described by taking the case of a warehousing operation as an example. When a loading command is issued from the host, the on-board control panel 10 controls the travel 4 and the lifting / lowering device 3 to position the fork mechanism 2 at the loading station 8, load the load, and further load the loaded load. To the luggage stock mechanism 1a. Loading of the baggage from the station 8 and delivery of the baggage to the baggage stock mechanisms 1a and 1b are repeated three times, and when the baggage is completely loaded on the fork mechanism 2, the stacker crane 6 moves to the target shelf instructed to enter the warehouse. Then, the work of unloading the luggage using the fork mechanism 2 is performed. When the first one is over, luggage stock mechanism 1
From a to 1c, the luggage is sequentially delivered to the fork mechanism 2, and as a result, up to four luggage can be stored on the shelf. Also, when an outgoing command is issued to the on-board control panel 10 from the host, the on-board control panel 10 sequentially controls the respective devices to load the luggage from the designated shelf and temporarily load the luggage stock device. It is possible to continuously carry out the wholesale operation of the stock and, further, the stock luggage at the stage of returning to the delivery station.

[0025]

According to the present invention, the luggage transport device is provided with the luggage stock mechanism capable of transferring the luggage between the fork mechanism and the loading / unloading station. Since the entry and exit work can be performed, the efficiency of the entry / exit operation can be improved. In addition, the use of the luggage transport device of the present invention can reduce the operating distance for traveling and elevating, so that an energy saving effect can be expected.

Further, according to the present invention, the provision of the luggage stock mechanism which enables the transfer of the luggage to and from the fork mechanism enables a plurality of luggage to be conveyed at one time and a continuous loading and unloading operation. However, the structure of the stacker crane can be simplified because the means for transferring the load between the load storage mechanism and the loading / unloading station is unnecessary.

[Brief description of the drawings]

FIG. 1 is an explanatory diagram of a luggage carrier.

FIG. 2 is an explanatory diagram of an automatic warehouse system.

FIG. 3 is a block diagram of control of the luggage carrier.

FIG. 4 is an explanatory diagram of a luggage driving device.

[Explanation of symbols]

1a-1c: Luggage stock mechanism, 2: Fork mechanism, 3
... Lifting device, 4 traveling device, 5 lifter, 6 stacker crane for loading / unloading work, 7a, 7b rack, 8 ... loading station, 9 ... loading station, 10 ... on-board control panel.

Claims (1)

[Claims] 1. A loading / unloading stacker crane which travels on a traveling lane between left and right shelves for storing luggage, moves up and down in the height direction of the shelves, and transfers luggage to and from the shelves by a fork mechanism. In the transport trolley, the luggage taken out of the shelf by the fork mechanism is received from the fork mechanism to temporarily store the luggage. A means for transferring the luggage at the loading / unloading station so that a plurality of luggage can be transported at the same time so that the luggage can be loaded and unloaded.