JPH06293408A - Moving shelf system - Google Patents

Abstract

PURPOSE:To provide a moving shelf system which dispenses with the provision of a controller on each moving shelf and can reduce the cost and easily perform the moving work of a shelf. CONSTITUTION:A system consisting of a plurality of moving shelves is provided with remote input and output devices 10 provided on the respective moving shelves; and a control means 20 for remotely conducting the centralized control of input and output of the input and output devices 10.

Description

Detailed Description of the Invention

[0001]

BACKGROUND OF THE INVENTION 1. Field of the Invention The present invention relates to a mobile rack system including a plurality of mobile racks. In particular, the present invention relates to a mobile rack system capable of centrally controlling each mobile rack at one place.

[0002]

2. Description of the Related Art Conventionally, in a factory or a warehouse, a moving rack system capable of efficiently storing luggage in a small space has been used.

FIG. 5 is a front view of a moving rack in this moving rack system.

In FIG. 1, the movable rack is provided with a movable carriage 1 movable along a traveling rail R and a luggage storage rack 2 which is erected on the upper portion of the movable carriage 1. 3 is a controller for controlling the movement of the shelf,
It is attached to the front of the luggage storage rack 2.

Such a movable rack is, as shown in FIG.
Plural pieces are arranged side by side on the traveling rail R. The movable shelves arranged in this manner are individually moved by operating the controller 3. An interlock is provided between the movable shelves.

FIG. 6 is a schematic diagram for explaining the operation of the movable rack.

In the figure, block B1 to block B
5 is a moving shelf, P1 to P6 are passage numbers, and S1 to S6
Is a controller 30-35 for opening the passages P1-P6
Switch. Each movable rack is movable in the directions of arrows X1 and X2. Normally, the passage is limited to one place.

Next, the operation and action of opening the passage will be described. Here, from the state where the passage P4 is open,
The case of opening the passage P2 will be described.

First, the switch S2 for opening the passage P2 on the right side of the block B1 of the movable rack is operated. Then, from the controller 31 of the block B1 to the block B
A movement command is sent to the controller 33 of No. 3. The controller 33 of the block B3 confirms that the block B3 can move in the arrow X1 direction, and moves the block B3 in the arrow X1 direction. This causes passage P4 to be closed and passage P3 to be opened instead.

After that, the controller 32 of the block B2
Confirms the movement of the block B3 and moves the block B2 in the direction of the arrow X1. As a result, the passage P3 is closed, and instead the passage P2 is opened and the movement of the shelf is completed.

[0011]

The conventional moving rack system described above has the following problems.

A controller for moving the shelves had to be provided for each moving shelf. For this reason, there is a problem that the manufacturing cost of the moving shelf becomes high.

Further, in order to move each movable rack, it is necessary to go to the movable rack and operate the controller one by one, which is a problem that the work is complicated.

An object of the present invention is to solve the above problems, to eliminate the need to provide a controller for each movable shelf, to reduce the cost, and to easily perform the operation of moving the shelf. It is to provide a mobile shelf system capable of

[0015]

To achieve the above object, the present invention provides a system comprising a plurality of movable shelves,
Each mobile rack is provided with a remote input / output device, and a control means for remotely controlling the input / output of these input / output devices is provided.

[0016]

Since the movable rack system of the present invention has the above-mentioned structure, it has the following operational effects.

That is, since each mobile rack is provided with a remote input / output device, and a control means for centrally managing the input / output of these remote input / output devices is provided, it is possible to move each mobile rack. Centralized control can be performed remotely.

Thus, according to the mobile rack system of the present invention, it is not necessary to provide a controller for each mobile rack, so that the cost can be reduced, and the rack moving work can be centralized at one place by remote control. The effect is that you can do it.

[0019]

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

FIG. 1 is a block diagram for explaining a mobile rack system according to the present invention.

In the figure, the mobile shelf system of the present embodiment has a remote input / output device 10 provided in each mobile shelf.
And a control means 20 for centrally managing the input / output of these input / output devices 10 remotely.

The input / output device 10 inputs / outputs information between the control means 20 and the input / output devices 10. Each input / output device 10 includes an inverter 11 and the inverter 11
Are connected to the traveling motors 12 which are controlled by the control means 20 and are operated by the commands from the control means 20. Further, the input / output device 10 is provided with a sensor 13 for detecting each adjacent moving rack. The information detected by these sensors 13 is sent to the control means 20. The control means 20 recognizes the adjacent moving shelves based on the information from the sensor 13 and the like.

The control means 20 is a PL as a sequencer.
C (Programmable Logic Controller) 21
And a CPU 2 for controlling this PLC 21 from a higher level
2, a display 23 for monitoring the movement control of the moving rack by the PLC 21 and the arrangement of the moving rack, and a control panel 24.

FIG. 2 is a schematic diagram of a movable rack for explaining the table structure of the PLC 21.

In the figure, block B1 to block B
Reference numeral 9 is a moving rack, and P1 to P10 are passages. Block B1
The mobile rack has a master unit for forming a network. The mobile shelves of blocks B2 to B9 are composed of only the slaves forming the network. The movable rack moves in the directions of arrows X1 and X2 in the figure.

In the movable rack having such a structure, one aisle is required on the master side and one aisle is required on the slave side, for a total of nine aisles. Therefore, it is necessary to construct 10 passage tables in the entire system.

FIG. 3 is a PCL in the mobile shelf shown in FIG.
21 is a table for explaining the control of No. 21 and shows the movement mode of the block corresponding to the open command of each passage when the passage P6 is open. In FIG. 2, the movement of the shelf in the X1 direction is the forward movement, and the movement of the shelf in the X2 direction is the backward movement.

In FIG. 3, for example, when there is an open command for the passage P3, the blocks B5, 4 and 3 are
The PCL 21 sends a “forward” travel command. Then, the input / output devices 10 of the blocks B5, 4, 3 receive this, and the blocks B5, 4, 3 simultaneously advance. As a result, the passage P6 is closed, and at the same time, the passage P3 is opened. Further, for example, when there is an instruction to open the passage P8, each input / output device 1 of the blocks B6 and B7
To 0, the PCL 21 sends a "reverse" traveling command. As a result, the blocks B6 and 7 are simultaneously retracted to close the passage P6, and at the same time, the passage P8 is opened.

The block movement under the control of the PCL 21 as described above is carried out as follows.

(Current Passage Number)-(Open Passage Number)> 0: From the block having the same number as the open passage to the larger block, the number of differences (the above formula (current passage number)- The number of blocks equal to (the number obtained by opening passage number) is moved in the forward direction. This opens the desired passage. For example,
If the current passage is P6 and the passage to be opened is P3, 6-3
= 3, the above relationship is established, and three blocks B3, that is, blocks B3, 4, 5 are moved in the forward direction.

If (current passage number)-(open passage number) <0, the number of differences (from the block of the same number as the current passage number to the larger one) )-(Number of passages to open)
The number of blocks obtained by (1) is moved in the backward direction. This opens the desired passage. For example, if the current passage is P6 and the passage to be opened is P8, 6
At -8 = -2, the above relationship is established, and blocks B6 to 2
That is, the blocks B6 and B7 are moved in the backward direction.

When (current passage number)-(open passage number) = 0, the open instruction is canceled because the opened passage is the same as the current passage.

According to the mobile rack system controlled by the PLC 21 as described above, the worker monitors the movement control of the mobile rack and the arrangement of the mobile rack by the display 23 of the control means 20 arranged remotely. The control panel 24 can remotely control the movement of the shelves.

Next, the operation at the time of remote operation will be described based on the flowchart shown in FIG.

(A) The number of the passage P to be opened is input through the control panel 24 (ST1).

(B) The current passage P number is PLC2.
1 is read (ST2).

(C) It is determined whether (current passage number)-(open passage number)> 0 (ST3). If (current passage number)-(open passage number)> 0, the block having the same number as the opening passage is moved to the larger block in the forward direction in the number equal to the difference (ST4). ). After that, the current passage number is rewritten to the opened passage number (ST5).

(D) If (current passage number)-(open passage number)> 0 is not satisfied, it is determined whether (current passage number)-(open passage number) <0. (ST6). When (current passage number)-(open passage number) <0, the block having the same number as the current passage number is moved in the backward direction from the block having the same number to the larger number (ST7). ). After that, the current passage number is rewritten to the opened passage number (ST5).

(E) (Current passage number)-(Open passage number) <0. If (Current passage number)-(Open passage number) = 0, the shelf moving command is issued. Is canceled (ST8).

According to the above-described mobile rack system of the present invention, each mobile rack has a remote input / output device 10.
Since the control means 20 for remotely controlling the input / output of these input / output devices 10 is provided, the movement of each movable rack can be controlled remotely.

As a result, unlike the conventional case, it is not necessary to provide a controller for each movable shelf, and it is possible to reduce the cost, and moreover, the movement of the shelf can be centrally performed at one place by remote control. it can.

Although the embodiments of the present invention have been described above, the present invention is not limited to the above embodiments, and various modifications can be made within the scope of the gist of the present invention.

[0043]

[Brief description of drawings]

FIG. 1 is a block diagram for explaining a mobile rack system according to the present invention.

FIG. 2 is a plan view of the same.

FIG. 3 is a front view of a moving shelf when the design of the luggage storage shelf is changed.

FIG. 4 is a front view showing a conventional moving rack.

FIG. 5 is a front view of a mobile shelf in the mobile shelf system.

FIG. 6 is a schematic diagram for explaining the operation of the movable rack.

[Explanation of symbols]

 10 input / output device 20 control means

Claims (1)

[Claims] 1. A system comprising a plurality of mobile shelves, wherein each mobile rack is provided with a remote input / output device, and a control means for remotely centrally managing the input / output of these input / output devices is provided. And a mobile shelf system.