JPS63295304A - Delivering device for automatic warehouse - Google Patents

Abstract

PURPOSE:To feed cargo in short time with specific sequence, in a delivery device for automatic warehouse in delivery center, by circulating the cargo on an endless conveyor from the automatic warehouse, then judging whether the cargo is to be delivered or not at a delivery port and controlling delivery operation. CONSTITUTION:A controller 8 controls delivery work from an automatic warehouse 1 through conveyors 2a-2c to a conveyor 3 in random sequence based on a delivery request. The conveyor 3 carries the delivered cargo onto conveyors 6a-6c at delivery ports 7a-7c. Upon arrival to the conveyors 6a-6c, the cargo is checked of its delivery order, and if the cargo is not in delivery sequence, the conveyor 3 is circulated continuously so as to prevent delivery of cargo onto the conveyor 6. When a cargo in delivery sequence arrives to the conveyors 6a-6c, it is delivered thereon. With such arrangement, the cargo can be delivered in short time according to specific sequence.

Description

DETAILED DESCRIPTION OF THE INVENTION [Industrial Application Field] The present invention relates to a device for rearranging randomly arranged loads into a desired order, and is particularly suitable as a warehouse unloading device.

[Conventional technology]

Automated warehouses are often used in distribution centers for various products. An automated warehouse consists of a three-dimensional storage shelf that has a large number of storage shelves, a stacker crane that runs along the three-dimensional storage shelf and transports loads between the storage shelf and the loading/unloading entrance, and a truck and the loading/unloading entrance. It consists of a conveyor, etc. that connects the (Japanese Unexamined Patent Publication No. 60-128101) To explain the case of unloading a load, based on a retrieval instruction, a stacker crane takes out the load from a storage shelf and outputs the load to a retrieval port. This load is transported by a conveyor or the like, and loaded onto a truck or the like by a forklift or the like.

When loading cargo onto a truck, it is necessary to consider the order in which the cargo will be unloaded from the truck. For example, in the case of a truck delivering cargo to multiple stores, first
When delivering loads A, B, and C to a store, and then delivering loads B, C, and D to a store Y, the load for use in It is necessary to load cargo for the store. That is, it is generally necessary to load in the reverse order of unloading. Furthermore, even when all cargo is transported to the same location, it may be necessary to load the cargo in consideration of the order of unloading from the viewpoint of the work and storage contents at the destination.

[Problem that the invention seeks to solve]

As mentioned above, it is necessary to consider the order of unloading when loading trucks. Automated warehouses deal with this by the following two methods.

(1) A plurality of loads transported by a conveyor or the like are unloaded from a three-dimensional storage shelf, and a forklift driver takes out the loads in accordance with the loading order and loads them onto a truck. According to this method, it is time consuming and there is a risk of making mistakes.

(2) Match the order of unloading cargo by stacker crane with the order of loading onto trucks. This allows for reliable loading. However, it requires a reasonable amount of time. Furthermore, control becomes complicated. in general,
This becomes even more noticeable because one truckload of cargo is unloaded from multiple storage shelves.

For example, when loading load A (7) next to load D, load D is on the 1st storage shelf, and A is on the 2nd storage shelf. If No. 1 is upstream in the direction, it is necessary to wait until the unloading cargo passes from the loading/unloading port of K2 to the conveyor. In addition, in general, a stacker crane does not perform only one type of loading/unloading operation, but also unloading/loading to other loading/unloading ports, so it may not be possible to unload the above-mentioned cargo while performing other operations. There is a delay, and the shipping of cargo A is delayed, which takes time.

An object of the present invention is to enable a plurality of loads to be supplied to a supplied part in a specific order, and to supply a plurality of loads in that specific order in a short time. There is a particular thing.

[Means for solving problems]

The present invention provides an automatic warehouse having a plurality of unloading devices, one conveyor device that endlessly circulates the goods discharged from the respective unloading devices, a plurality of unloading ports connected to the conveyor device, and a plurality of unloading ports connected to the conveyor device. The present invention is characterized by comprising a control device that instructs the conveyor device at the connection point between the conveyor device and the exit port to instruct the conveyor device whether to take out or circulate the cargo of the conveyor device.

[For production]

Conveyor *fi in no particular order! The unloaded goods are delivered to the unloading port according to the order while being circulated by the conveyor device.

〔Example〕

An embodiment of the present invention will be described below with reference to FIG. Loads discharged from each stacker crane (not shown) of the automatic warehouse are merged onto the conveyor 3 from each conveyor 2a, 2b, 2c. The cargo moved on the conveyor 3 is transferred to each conveyor 6 in the order required by each shipping lower lower a, 7b, 7c.
Payout to a, eb, 6c. The conveyor 3 is endless, and the loads not delivered to each conveyor 6a, 6b, 6c are circulated. A control device 8 consisting of a computer controls each conveyor 2, 3.6 and the stacker crane.

The operation of such a configuration will be explained. When there is a warehouse delivery request, the control device 8 instructs the stacker crane to deliver the cargo for which the warehouse delivery request has been made. The order of unloading the cargo from the stacker crane is fixed, and the order of unloading the cargo from the conveyors 2a, 2b, and 2c to the conveyor 3 is also fixed. Then, the conveyor 6 (6a.

6b or 6c).

When the cargo arrives at the target conveyor 6, the order of delivery is checked. If the order of delivery is different, the cargo is not delivered to the conveyor 6 and circulates through the mother conveyor 3. When the goods arrive at the destination conveyor 6 again, the order of delivery is checked, and if the order of delivery is good, the goods are delivered to the conveyor 6.

According to item 20, the cargoes placed on the conveyor 3 in random order are delivered to each delivery port in a predetermined order.

Note that the control device 8 recognizes whether n loads are located at n positions on each conveyor 2.3 using a well-known tracking technique.

Therefore, from conveyor 3 to conveyors 2, 6a, 6b, 6
It is possible to determine whether or not to pay out to c.

In FIG. 2, instead of the conveyor 3, an unmanned trolley 11 is used for circulation.

FIG. 3 shows a conveyor 3 in which a large number of loading platforms 14 are provided on the upper surface of an endless chain conveyor 13. A pusher 16 for pushing out the load from the loading platform 14 is provided at the position of each conveyor 6a, 6b, 6c. Moreover, at the positions of each conveyor 2a, 2b, 2C, there are conveyors 2a, 2b.
, 2c is provided to push out the load onto the loading platform 14. As shown in FIG. 4, the pusher consists of a device ρ that raises and lowers the plate in contact with the load, and a device that horizontally moves the device n.

The bushy beauty is suspended from the ceiling.

〔Effect of the invention〕

As described above, according to the present invention, shipped cargo can be rearranged in a predetermined order.

For example, a stacker crane can carry out unloading work without considering the order, so the time required to unload a set of cargo can be significantly shortened.

[Brief explanation of drawings]

Fig. 1 is an overall configuration diagram of an automated warehouse according to an embodiment of the present invention, Fig. 2 is a plan view of another embodiment of the invention, Fig. 3 is a plan view of another embodiment of the invention, and Fig. 4 is a plan view of another embodiment of the invention. The figure is a front view of the bushing shown in FIG. 3. 1--Automated warehouse, 2a, 2b, 2c, 3, 6a. 6 b, 6 c-・-=-conveyor, 7 a,
7 b, 7 c...-21 Figure 42 Figure 3 Figure 4 2?

Claims (1)

[Claims] 1. An automatic warehouse having a plurality of unloading devices, one conveyor device that endlessly circulates the goods discharged from the respective unloading devices, a plurality of unloading ports connected to the conveyor device, and the conveyor device. and a control device for instructing the conveyor device at the connection portion with the exit port to instruct the conveyor device whether to discharge or circulate the cargo.