JPH10175708A - Storage mechanism of automatic transfer type physical distribution center - Google Patents

Abstract

PROBLEM TO BE SOLVED: To contrive a smooth delivery without damaging a baggage by making a free roller conveyor have an inclined angle so that a side which comes into contact with a feeding and sorting mechanism may be high and a side which comes into contact with a delivering and sorting mechanism may be low and arranging a pushing bucket of prescribed weight at the last end of a baggage to be stored. SOLUTION: A stopper which temporarily stops each baggage which is transported in is provided at the tip part of a storage mechanism 3 and the stopper is operated by being interlocked with a delivering and sorting mechanism via a delivering control machine. A free roller conveyor is installed so as to have an inclined angle X in which a baggage self-travels by gravity. In this case, a heavy baggage moves on the free roller conveyor without a problem but a light baggage comes into contact with a side wall and sometimes stops to move while the baggage moves on the free roller conveyor. In a state that all the baggages to be stored in the free roller conveyor are stored, pushing buckets 30 having maximum weight of baggages are arranged at the last end of the baggages and a pushing is made possible.

Description

DETAILED DESCRIPTION OF THE INVENTION

[0001]

BACKGROUND OF THE INVENTION 1. Field of the Invention The present invention relates to an automatic transfer type wherein a large number of packages having a plurality of sorting destinations are loaded and stored according to the sorting destinations, and can be sequentially loaded and unloaded for each sorting destination when unloading. It relates to the storage mechanism of a distribution center.

[0002]

2. Description of the Related Art In a conventional automatic transfer type distribution center, a free roller conveyor is known as a storage mechanism for temporarily storing luggage sorted for each delivery destination store.

In this type of storage mechanism, the free roller conveyor is in an inclined state, and the sorted luggage runs on the free roller by its own weight. Therefore, these luggage are moved to the lowermost end of the free roller conveyor. Stored in rows.

At the time of carrying out the luggage, the stopper provided at the lowermost end of the free roller conveyor is removed so that the stored luggage can be transferred to the sending / sorting mechanism provided in contact with the storage mechanism. , Is carried out by the weight of the stored luggage.

[0005]

Generally, in a free roller conveyor, as the inclination angle of the free roller conveyor increases and the weight of the load increases, the load becomes easier to move.

However, when the inclination angle X of the free roller conveyor is increased, as shown in FIG. 7, the luggage a stored earlier is replaced with the luggage b stored later.
As the total weight of the pieces increases and the total weight of the pieces increases, there is a problem in that the pieces are crushed by the pressure.

On the other hand, when the inclination angle X is reduced, it becomes difficult for the load to move. For example, as shown in FIG. 8, light load c contacts the side wall 32 provided on the free roller conveyor as shown in FIG. Therefore, there is a problem that the frictional force causes a stop in the middle of the free roller conveyor. And, when the luggage stops in the middle of the free roller conveyor, the stored luggage is not carried out to the delivery and sorting mechanism. I was letting it.

An object of the present invention is to provide an automatic transfer type logistics center which does not cause damage to the luggage at the time of loading, and which can smoothly send out all the stored luggage at the time of unloading to the sorting mechanism. It is to provide a storage mechanism.

[0009]

SUMMARY OF THE INVENTION In order to achieve the above objects, the present invention provides a load carrying mechanism, a sorting mechanism for sorting loaded goods according to a destination store, and a sorting method for sorting and loaded goods to a destination. Automatic transfer-type distribution center storage consisting of a storage mechanism for storing each store, a delivery sorting mechanism provided in contact with the lower end of each storage mechanism, a load unloading mechanism connected to the delivery sorting mechanism, and a loading sorting mechanism In the mechanism, the storage mechanism is configured by a free roller conveyor, the height of the side in contact with the sending and sorting mechanism is high, and the storage mechanism is configured with an inclination angle so that the side in contact with the sending and sorting mechanism is low, and the storage mechanism is It is characterized in that a pushing bucket of a predetermined weight is arranged at the end of the stored luggage.

[0010]

Embodiments of the present invention will be described below with reference to the drawings.

FIG. 1 shows an example of a basic configuration of an automatic transfer type distribution center according to the present embodiment, in which a portion indicated by a symbol (A) indicates a structural portion from a loading mechanism to a storage mechanism and a delivery sorting mechanism. , (B) indicates a structural part reaching from the sending-out sorting mechanism to the carrying-out mechanism.

This automatic transfer type distribution center has a loading mechanism 1 for loading a package a ... a, a sending sorting mechanism 2 ... 2 for sorting loaded packages according to destination stores, and a delivery mechanism for sorting and loading packages a ... a to delivery destinations. Storage mechanisms 3 to 3 for each store, delivery sorting mechanisms 4 to 4 provided in contact with the lower ends of the storage mechanisms 3 to 3, loading and unloading mechanisms 5 connected to the delivery sorting mechanisms 4 to 4, and loading. It is constituted by a combination of the sorting mechanism 6.

The distribution center having the above-mentioned structure has a two-story structure. In FIG. 1, a loading mechanism 1 shown in FIG.
4 are configured so as to occupy a two-story portion, and are loaded from the unloading mechanism 5 of the luggage connected to the delivery sorting mechanisms 4... 4 shown in FIG. The portion reaching the sorting mechanism 6 is configured as a first-floor portion on the lower surface of the mechanism portion indicated by the symbol (A) in FIG. 1, so that the space constituting the distribution center can be saved.

The load carrying mechanism 1 is constituted by a conveyor that rotates endlessly by a drive motor, and includes a number of components (for example, a pipe-shaped block of a fixed length connected endlessly in a horizontal direction). A conveyer (not shown) of a load that moves in a direction across the length of each component (pipe-shaped block) is attached to the configured conveyor or the like.

At the base end of the loading mechanism 1, a reading mechanism 7 (bar code reader) for reading a sorting destination code (bar code) printed or affixed to the sent luggage a ... a is provided. The information read by the reading mechanism 7 is used for driving a delivery shoe (not shown) of the load incorporated in the loading mechanism 1 at a position corresponding to the predetermined sorting mechanism 2... 2 during transport. It is.

Note that the structure of the delivery device of the load provided in the loading mechanism 1 does not need to be limited to the delivery shoe (not shown) described above. For example, the structure of the loading mechanism 1 corresponding to the delivery sorting mechanisms 2. The object can also be achieved by mounting a shutter mechanism for changing the course of the baggage or a delivery pusher (both not shown) in which the arm rod moves in a direction crossing the upper surface of the carry-in mechanism at the upper surface position.

The loading mechanism 1 gradually increases its height from the loading base end located on the first floor of the building, and the horizontal portion at the upper end located on the second floor is the upper end portion of the storage mechanisms 3. 2... On the same side as 2).

The feed sorting mechanisms 2...
Are sent to the storage mechanisms 3... Arranged in several rows, and the base end of the conveyor having a predetermined length to which a number of rollers are attached faces the loading mechanism 1. The part has a swinging structure that swings freely so as to contact the storage mechanisms 3...

The storage mechanism 3... 3 stores a large number of packages a.
It is a space for sorting and storing for each sorting destination store, and is provided at a position intersecting with the loading mechanism 1 by a number corresponding to the number of sorting destination stores.

Each of the storage mechanisms 3... 3 has a free roller conveyor structure in which a number of rollers are arranged side by side, so that the rollers rotate by their own weight without using special power. I have.

As shown in FIG. 2, the roller conveyors constituting the storage mechanisms 3 are configured such that the side in contact with the load carrying-in mechanism 1 is high, and gradually toward the front end (the side in contact with the sending-out sorting mechanism 4). It is configured as a downward slope so as to be lower.

At the tip of each of the storage mechanisms 3.
Stoppers 8... 8 for temporarily stopping the loaded luggage a. These stoppers 8 ... 8
Are operated in conjunction with the delivery sorting mechanisms 4... 4 according to an instruction of a delivery management device 41 provided separately.

All of the delivery sorting mechanisms 4... 4 have their leading ends joined to a load carrying-out mechanism 5 constituted by a single conveyor. Each of the delivery sorting mechanisms 4... 4 is provided with a separately provided delivery management machine 41.
The opening and closing of the stoppers 8... 8 of the storage mechanisms 3... 3 connected thereto in accordance with the instruction of FIG.

In the middle of the unloading mechanism 5, sorting mechanisms 6 for loading are provided. Sorting mechanism 6 for loading ...
Numeral 6 has the same function as the feed sorting mechanism 2 provided at the tip end of the carry-in mechanism 1, and is read by the sorting code reading mechanism 9 (bar code reader) provided in the middle of the carry-out mechanism 5. .. 5n are distributed to predetermined loading routes 5a, 5b, 5c,... 5n and sent to a loading terminal for trucks.

Here, the storage mechanism 3 will be described in detail with reference to the drawings.

As shown in FIG. 3, the free roller conveyor constituting the storage mechanism 3 is installed so as to have an inclination angle X such that the load a runs on its own weight. This inclination angle X is determined by the weight of the load a to be handled. The distribution center according to the present embodiment handles luggage having an average size of 350 mm in width, 500 mm in length, 300 mm in height, and a weight of 5 kg to 20 kg, so that the inclination angle X is 2.7 ° to 2.8. °.

Here, when the inclination angle X is set to 2.8 ° or more, the luggage is liable to be damaged. On the other hand, when the inclination angle X is set to 2.7 ° or less, a light weight luggage is lost. It becomes difficult to move on the free roller conveyor. If the minimum weight of the luggage is 5 kg or more, the inclination angle X is 2.
7 ° or less and the maximum weight of luggage is 20
If it is not more than Kg, the inclination angle X can be made 2.8 ° or more.

In the storage mechanism 3 configured as described above, a heavy load having a weight of about 20 kg moves on the free roller conveyor without any problem. However, when a light load having a weight of about 5 kg is moving on the free roller conveyor, it may come into contact with the side wall of the free roller conveyor and stop moving due to the frictional force.

In the storage mechanism 3 according to the present embodiment, the maximum weight of the luggage is placed at the end of the luggage line with all luggage to be stored on one free roller conveyor. A push bucket having a weight of 20 kg is arranged.

In the storage mechanism 3 according to the present embodiment in which such a pushing bucket is disposed, even if a light load is brought into contact with the side wall, the weight of the pushing bucket located at the rearmost position depends on the weight of the last pushing bucket. It is no longer necessary to stop on the spot due to being pushed from behind, and all the luggage can be carried out.

As shown in FIG. 4, a sensor 31 for detecting the reflection plate 30a disposed on the push bucket 30 is provided at the lowermost end of the free roller conveyor.
When all the luggage has been stored, turn on the lighting tube,
By providing a display device 50 having a configuration as shown in FIG. 5 for turning off the lighting tube when the sensor 31 detects the reflection plate 30 a of the push bucket 30, the presence or absence of a package in the plurality of storage mechanisms 3 can be determined. It can be easily known by checking the state of the lighting tube 51 at one place.

FIG. 6 is a perspective view showing the configuration near the lower end of the storage mechanism 3. Here, the free roller 33 in the portion (C) in the figure constituting the lower end portion of the storage mechanism 3 is rotated at a constant speed by an external drive device when carrying out the baggage a from which the stopper 8 comes off. Therefore, regardless of whether the number of stored luggage is large or small (whether the total weight of the stored luggage is large or small), the load a is smoothly carried out at a constant speed.

The reason is that, when the total weight of the stored luggage is heavy, in a free roller conveyor composed of only free rollers, the movement speed of the luggage is generally increased. This is because when the free roller 33 that rotates at a constant speed by the driving device is provided, the baggage is braked at the portion (C) in the figure to move at a constant speed.

The total length of the free roller conveyor used as the storage mechanism 3 in this embodiment is 50 m or more.
100 m, and the length of the part (C) in the figure is 2.5 m or more.
3 m.

[0035]

As described above, according to the present invention, no damage is caused to the load at the time of carrying in, and all the stored goods are smoothly delivered to the sorting mechanism at the time of carrying out. be able to.

[Brief description of the drawings]

FIG. 1 is a plan view of an automatic transfer type distribution center according to the present invention.

FIG. 2 is a front view of a storage mechanism according to the present invention.

FIG. 3 is an explanatory diagram of a storage mechanism according to the present invention.

FIG. 4 is an explanatory diagram of a storage mechanism according to the present invention.

FIG. 5 is a configuration diagram illustrating a configuration example of a display device.

FIG. 6 is a perspective view showing a configuration of a lower end portion of the storage mechanism according to the present invention.

FIG. 7 is an explanatory diagram of a conventional storage mechanism.

FIG. 8 is an explanatory diagram of a conventional storage mechanism.

[Explanation of symbols]

 DESCRIPTION OF SYMBOLS 1 Carry-in mechanism of load 2 Sending-sorting mechanism 3 Storage mechanism 4 Sending-sorting mechanism 5 Load-unloading mechanism 6 Loading-sorting mechanism 7,9 Interpretation mechanism 8 Stopper 21,41 Management machine 30 Pushing bucket 30a Reflector 31 Sensor 32 Side wall 33 Free roller 50 Display device 51 Lighting tube a, b, c Luggage

Claims (3)

[Claims] A delivery mechanism for sorting the loaded packages according to the destination store; a storage mechanism for storing the sorted and loaded packages for each destination store; and a lower end of each storage mechanism. In a storage mechanism of an automatic transfer type distribution center comprising a combination of a delivery sorting mechanism provided in contact with, a cargo unloading mechanism connected to the delivery sorting mechanism, and a loading sorting mechanism, the storage mechanism is configured by a free roller conveyor, and The height of the side in contact with the sorting mechanism is high, and the side in contact with the delivery sorting mechanism is configured to have an inclination angle so as to be low, and a booster bucket of a predetermined weight is arranged at the rear end of the luggage stored in the storage mechanism. A storage mechanism for an automatic transfer type distribution center. 2. A plurality of free rollers constituting a lower end portion of the storage mechanism among the free roller conveyors constituting the storage mechanism are rotated at a constant speed by an external drive device. 2. The storage mechanism of the automatic transfer type distribution center according to 1. 3. The inclination angle of the storage mechanism is selected according to the weight of the luggage so that the luggage becomes a minimum angle at which the luggage can travel by its own weight. In the case of 5 kg to 20 kg, the inclination angle is 2.7 °.
~ 2.8 ° and the weight of the booster bucket is 20
The storage mechanism of the automatic transfer type distribution center according to claim 1 or 2, wherein the storage mechanism is Kg.