JP2541461B2 - Automatic warehouse - Google Patents

Description

Detailed Description of the Invention

[0001]

FIELD OF THE INVENTION This invention relates to automated warehouses .

[0002]

2. Description of the Related Art The following are known as conventional automatic warehouses. That is, a pair of front and rear rack devices having a large number of article storage shelves vertically and horizontally provided at predetermined intervals in the front and rear direction, and a stacker crane provided so as to be movable left and right between the front and rear rack devices. The stacker crane has a traveling carriage, an elevating platform that can be raised and lowered by a mast provided on the traveling platform, and an article transfer device (for example, a front-back direction) provided on the elevating platform. A slide fork slidably provided in the rack device, and the rack device includes a large number of front structural columns arranged side by side at predetermined intervals, and a predetermined number of space between the front structural columns behind the front structural columns. Rear structural columns lined up at intervals, structural beams passed to these left and right structural columns at predetermined intervals in the height direction, structural beams passed to the front and rear structural columns, and the front structural beams and Rear side Shelf columns that have a smaller cross-sectional shape (smaller left and right width) than the structural columns, and are passed to the beam at predetermined intervals in the left-right direction so that the front and rear ones face each other, and the left and right sides of the shelf columns. And an article support member attached at a predetermined interval in the height direction to the side of the structure column facing the shelf column, and the left and right sides facing each other without the column (structural column or shelf column) interposed therebetween. 2. Description of the Related Art It is known that an article storage shelf is configured by an article support member. In the conventional rack device, the structure supporting the overall strength is constituted by the structure support pillars, the structure beams, and the structure crosspieces, and the support pillars for shelves are attached to the structure, so that the rack device is constructed. There are advantages such as ease of use.

[0003]

OBJECTS OF THE INVENTION In the conventional automatic warehouse, if two article transfer devices are installed side by side on an elevator,
By using the article transfer devices arranged side by side, the articles can be efficiently stored in and taken out from the article storage shelves. However, in the above rack device, since the structural columns and the column columns for shelves having a smaller cross-sectional shape (smaller left-right width) than the structural columns are arranged in the left-right direction, the left and right article storage shelves sandwiching the structural columns can be used. Since the length between the centers in the left-right direction and the length between the centers in the left-right direction of the left and right article storage shelves that sandwich the shelf column are different, the distance between the centers in the left-right direction of the article transfer device is set to any one of the above-mentioned lengths. Even if it is adjusted to the other, it does not match the length of the other, so when storing or taking out the articles from the two article storage shelves that have not been adjusted, the articles are stored into or taken out from one of the article storage shelves. After that, the heavy stacker crane needs to be moved to the left and right to store and remove the articles from the other article storage rack. It is an object of the present invention to efficiently store and take out articles without moving a heavy stacker crane to the left and right.

[0004]

In order to achieve the above object, the present invention employs the following means. The present invention relates to a rack device having a large number of article storage shelves vertically and horizontally.
And the left and right sides of the rack
It has a stacker crane with a
The left and right sides of the front side are different from each other.
A number of first and second struts, and first and second supports on the front side
Behind the pillar, the rear side lined up with a certain space between it
The first and second stanchions and the front and rear stanchions are fixed in the height direction.
It has a large number of article support members provided at intervals,
Left and right article support members facing each other without the support
The article storage shelf is configured by the stacker.
The crane is equipped with a traveling carriage and a machine installed on the traveling carriage.
A lift that can be moved up and down freely on the strike, and left and right on this lift.
The left and right moving bases are movably installed and
And at least two article transfer devices that are
And a strut detector provided, wherein the strut detector
Based on the post detection signal of the
To confirm that it is in place
It is what

[0005]

The present invention has the following functions. There are few left and right moving tables installed on the lifting table
Since at least two article transfer devices are provided,
By moving the moving table left and right, a heavy stacker
Transfer all items without moving the crane left or right
The device ensures reliable and efficient storage and removal of goods.
It can be done easily. Also, the column detector can be used to transfer goods.
Make sure the table is in place with respect to the
After storing and taking out the goods after
Prevents interference between the transfer device and the article support members of the rack device
You can do it.

[0006]

DESCRIPTION OF THE PREFERRED EMBODIMENTS The present invention will be described below based on the embodiments shown in the drawings. In this specification, the front means the lower side of FIG. 1, the rear means the upper side of FIG. 1, the left means the left side of FIG. 1, and the right means the right side of FIG.

To open the stacker crane passage 16
And a pair of front and rear rack devices 1 are erected on the floor.
You. The rack device 1 is arranged on the left and right at predetermined intervals.
Many structural columns 3(First support column in the claims)When,
Behind these front structural columns 3 a certain distance from them
Structural columns 3 on the rear side, which are lined up with open spaces, and the left and right structural supports
Front and rear structural beams 4 passed over the pillars 3 in the height direction at predetermined intervals
Structural bars 5 that are passed to the structural columns 3 in the height direction at predetermined intervals
And the left and right directions to the front structural beam 4 and the rear structural beam 4.
At a predetermined interval, so that the front and back are facing each other
The cross-sectional shape is smaller than the passed structure strut 3.
Small) Shelf Support 7(The second support column in the claims)
And the left and right sides of the shelf column 7 and the shelf columns of the structural column 3.
Mounted on the side facing the pillar 7 at predetermined intervals via the mounting bars 8.
And an article support member 9 that is worn,
2 and left and right articles that face each other without the support column 3 for the shelf
An article storage shelf 10 is formed by the support member 9,
A slide fork 23 described later is provided between the pair of article support members 9.
The fork passage gap 11 that allows the vertical movement of the
Has been done. Article storage shelves 10 of the front and rear rack devices 1
The inlets / outlets 13 of the trays face each other. Support for the shelf
7 from the center in the left-right direction to the center in the left-right direction of the article storage rack 10.
The length of the structure is 1 and
The length of the article storage shelf 10 to the center in the left-right direction is L.
ing.

On the left side of the rack device 1, there is provided a loading / unloading roller conveyor 14 with the carrying direction directed to the left and right. A known article elevator (not shown) is provided on the rack device 1 side of the loading / unloading roller conveyor 14 so as to be paired with a slide fork 23 described later. This article lifter is a lift table that can be raised and lowered by a known lift device below the rollers of the loading and unloading roller conveyor 14, and a pair of bearings that are erected on the lift table and are positioned between the rollers of the loading and unloading roller conveyor 14. And a frame. The article elevator is configured such that the article W is lifted by the support frame to move the article loading / unloading roller conveyor 14
Forming a fork insertion gap between the conveying surface of the article W and the lower surface of the article W, or receiving the article W from the slide fork 23 by the support frame at the elevated position, and then descending the article W to the loading / unloading roller conveyor 14. It is the action of lowering.

A pair of upper and lower guide rails 18 are arranged in the stacker crane passage 16 so that the longitudinal direction thereof is oriented in the left-right direction, and the stacker crane 19 is guided by these guide rails 18 so as to be movable left and right. , The stacker crane 19 has a traveling carriage 20.
And a pair of masts 22 provided on the traveling carriage 20 so as to be able to move up and down, and a left and right moving base 26 provided on the lifting base 22 so as to be movable left and right by an operating device 31 described in detail below. If, article transfer referred to in the scope of this lateral movement base pair of right and left mounted for horizontal sliding in the longitudinal direction by a known reciprocating mechanism 26 slide fork 23 (according
Device) . The length between the left and right centers of the slide forks 23 on the left and right sides is 2 l (the length between the left and right centers of the left and right article storage shelves 10 that sandwich the shelf column 7). The upper surfaces of the left and right slide forks 23 are flush or almost flush. As is well known, the slide fork 23 projects downward from the article W.
Lifting / lifting the article W by raising the lift 22
The article W can be retracted to the side and the article W can be pulled into the lift table 22, and the article W can be unloaded onto the article storage rack 10 or the like by the reverse operation. Instead of the slide fork 23, another article transfer device may be used.

The actuating device 31 has a motor 32 mounted on the lifting table 22 and capable of rotating in the forward and reverse directions. A pinion 33 is fitted to the rotating shaft of the motor 32, and the pinion 33 is moved to the left and right moving table. Rack 34 provided on 26
Are in mesh. With such a configuration, the left and right moving table 26 can be moved to the left and right by rotating the pinion 33. In this embodiment, the left / right moving table 26
In the normal state, the stacker crane 19 is stopped so that the right-left center of the slide fork 23 is aligned with the left-right center of the article storage shelf 10 in that state. Has been done. Therefore, when the stacker crane 7 is stopped and the shelf columns 7 are provided between the left and right slide forks 23,
It is not necessary to move the left and right moving table 26. On the other hand, when the stacker crane 19 is stopped and the structural support pillar 3 is located between the left and right slide forks 23, after the article W is transferred by the right slide fork 23, the left and right moving base 26 is moved to the left ( Only L-1) will be moved. With such a configuration, the two articles W can be quickly stored in the article storage rack 10 or taken out from the article storage rack 10. Note that the front and rear portions of the left and right movement table 26, 2 Tsude pair of reflective photoelectric switch 37, 38, 39, 40 (range according
The column detector (circled) is provided in the order listed from the right. When the horizontal center of the right slide fork 23 is aligned with the horizontal center of the article storage shelf 10 on the left side of the structural support column 3, the reflective photoelectric switch 37 causes the structural support column 3 to move.
The slide fork 23 on the right side.
Storage rack 10 with the left and right sides of the center of the
When it is aligned with the horizontal center of the
Is arranged so as to face the structural support column 3, and when the horizontal center of the right slide fork 23 is aligned with the horizontal center of the article storage shelf 10 on the right side of the structural support column 3, the reflective photoelectric switch 39 is attached to the structural support column 3. When the left and right moving tables 26 are moved so that the left and right center of the left slide fork 23 coincides with the left and right center of the article storage shelf 10 on the left side of the structural support column 3 in such a state, the reflection type photoelectric switch. 38 is arranged to face the structural column 3.
Thus, the reflective photoelectric switches 37, 38, 39, 4
With 0, the position of the slide fork 23 can be confirmed.

[0011]

The present invention has the following structure.
It has the following effects.At least the left-right moving table, which is installed on the lifting table to move left and right
Since two article transfer devices are also provided,
By moving left and right,
All article transfer devices without moving the right and left
By goods Reliable and efficient storage / removal
You can follow. Article transfer device is specified for the article storage shelf by the pillar detector
Storing / removing items after confirming that they are in
By using the product transfer device and rack device
It is possible to prevent interference with the supporting member and the like.

[Brief description of drawings]

FIG. 1 is a simplified plan view showing an embodiment of the present invention with an intermediate portion omitted.

FIG. 2 is an enlarged cross-sectional view along the line II-II of FIG.

FIG. 3 is an enlarged view of part A of FIG.

FIG. 4 is a sectional view taken along line IV-IV of FIG. 3;

FIG. 5 is an enlarged cross-sectional view taken along the line VV of FIG. 3 with intermediate portions omitted.

6 is an enlarged sectional view taken along line VI-VI of FIG.

[Explanation of symbols]

 1 Rack device 19 Stacker crane 22 Lifting platform 23 Slide fork 26 Left and right moving platform

Claims (1)

(57) [Claims] 1. A plurality of article storage shelves are provided on the upper, lower, left and right sides.
The rack device and the left and right
It has a stacker crane installed in
The rack devices are lined up at left and right at predetermined intervals
A large number of different first and second struts, and these first front columns
1, behind the second column with a certain space between them
The first and second columns on the rear side in a row and the columns on the front and rear of these
A large number of article support members provided at predetermined intervals in the vertical direction
It has the left and right sides that face each other without the interposition of the columns.
An article storage shelf is made up of article support members.
The stacker crane is used for the traveling carriage and this traveling carriage.
The mast provided on the mast that can be raised and lowered,
The left and right moving stand, which is installed on the lifting table so that it can move left and right,
At least two article transfer devices provided on the moving table;
It has a strut detector installed on the left and right moving table,
Based on the strut detection signal of the strut detector, the article transfer device
Confirmed to be in place with respect to the goods storage rack
The automated warehouse is being made.