JPH0458966B2 - - Google Patents

Description

DETAILED DESCRIPTION OF THE INVENTION The present invention provides a shelving apparatus in which a plurality of shelving apparatuses are movably arranged on a rail and a passage is formed between them by moving them. By displaying a lamp to distinguish between when the passage has been properly formed and the machine is stopped, and when the machine is stopped mid-movement for emergencies or safety reasons, it is possible to prevent erroneous operations. purpose.

A shelving system in which multiple shelving devices are arranged side by side on a rail and each of the shelving devices is moved to form a passageway makes efficient use of space. It is equipped with means for stopping the shelving device during movement. In other words, when the shelving device is in use, there are two types of stoppages: when passage formation is completed, and when it is stopped due to an abnormality or for safety reasons. In the latter case, it is necessary to restart after removing the cause of the stoppage. . However, because this distinction is not made, there is a risk that the following operation may be performed by mistake.

The present invention solves the above-mentioned problems, and its gist is that a plurality of units are provided with a passage switch, a reset switch, and a reset lamp exposed on the outer surface, and a safety switch is provided at a predetermined position. In a stop display device for an electric movable shelf, the shelf devices are movable in a direction perpendicular to their storage surfaces and arranged side by side in that direction, and a passage is formed between them by their movement, Each shelving device has a control circuit, and the control circuit has at least an aisle control circuit, a reset circuit, a stop control circuit, a safety switch input circuit, and a ramp control circuit, and the moving shelving device further includes a It has a motor control circuit, and outputs a left or right command signal to the control circuit of the adjacent shelf device on the left or right based on the movement command signal output from the aisle control circuit, and also outputs a left or right command signal to the control circuit of the adjacent shelf device on the left or right. Or if the right command signal is input,
Based on the signal, the other path selection signal is input to the path control circuit and the reset circuit, and the path control circuit receives the first signal from the path switch in a state where the other path selection signal is not input. In response, a movement command signal is output, and a passage selection signal is output to the lamp control circuit, and a second signal is generated by operating the passage switch again, or a passage formation completion signal is generated when a passage of a predetermined width is formed. In response to this, the movement command signal is stopped, and a normal stop signal is output to the stop control circuit and lamp control circuit.Also, with the other passage selection signal input, the signal from the passage switch is received and the stop control circuit is output. The reset circuit outputs an abnormal stop signal, and upon receiving the signal from the reset switch, outputs a reset signal to the path control circuit and the safety switch input circuit to enable selection of another path, and also When the aisle selection signal is input, an abnormal stop signal is output to the stop control circuit, and the safety switch input circuit outputs a motor ON signal that is input only when any shelf device is moving. The safety switch outputs a safety stop signal to the stop control circuit and the lamp control circuit in response to a signal from the safety switch that is generated when a collision occurs with an obstacle, and the stop control circuit outputs a normal stop signal or A device that outputs a stop signal to the motor control circuit of each shelf device based on the abnormal stop signal, outputs a stop signal to the lamp control circuit, and outputs a stop signal to the motor control circuit of each shelf device based on the safety stop signal. The motor control circuit receives the left or right command signal and drives the motor of the shelf device,
and outputs a motor ON signal to the control circuit of each shelf device and a motor signal to the lamp control circuit of that shelf device,
The lamp control circuit also controls the lighting and blinking of the reset lamp connected to the lamp control circuit, which stops the motor in response to a stop signal and stops the motor ON signal and motor signal. When a normal stop signal and a stop signal are input, the reset lamp of that shelf device is lit,
When an abnormal stop signal is input, the reset lamp of that shelf device flashes, and when a safety stop signal is input, the reset lamp of that shelf device flashes, and the reset lamp of the shelf device whose reset lamp is lit or flashing flashes. This is a stop display device for electric movable shelves that remains lit or flashing until the circuit is reset by operating the switch.

DESCRIPTION OF THE PREFERRED EMBODIMENTS A device comprising one fixed shelf device and three movable shelf devices, in which the present invention is shown as an embodiment in the drawings, will be described. 1A, 1B, 1
C and 1D are shelf devices arranged parallel to each other in the depth direction, and among these, the leftmost shelf device 1A
is fixed and installed near a wall surface of a warehouse or the like, and other shelf devices 1B, 1C, and 1D are movable along rails 2 arranged in a direction perpendicular to their storage surfaces. Therefore, the shelving devices 1B, 1C, and 1D each include an appropriate number of wheels 3 that are engaged with the rails 2, and a reversible motor 4 that drives them.
It is equipped with B, 4C, and 4D.

A, B, C, and D indicate passages formed between each shelf device 1, and in FIG. 3, passage B is formed.
The shelf devices 1B, 1C, 1D have left limit switches 5B, 5 provided at their bottoms facing the floor.
C, 5D and right limit switch 6B, 6C, 6
D, and when all of the shelf devices 1B, 1C, and 1D are gathered on the shelf device 1A side, the actuator 7 faces only each of the left limit switches 5B, 5C, and 5D, and contacts only them.
B, 7C, 7D and the shelf device 1A, and when the shelf device 1B, 1C, 1D is moved to the right side, the right limit switch 6
Actuators 8B, 8C, which face only each of B, 6C, and 6D and are in contact only with them;
8D is placed on the floor. Therefore, each of the limit switches 5 and 6 is connected to the shelf device 1.
By shifting the positions in the width direction of each of B, 1C, and 1D, different limit switches are prevented from coming into contact with one actuator.

These limit switches 5 and 6 are connected to the shelf device 1.
When each of B, 1C, and 1D moves to the right or left, the distance it moves is regulated.
Figures 1 and 2 show left limit switches 5B, 5C,
5D are actuators 7B, 7C, 7
While in contact with D, all of the shelf devices are restricted from moving further to the left.

The actuators 7 and 8 can be arranged in any manner, but as illustrated in FIG.
If you fit it inside, you can easily set its position.
It is also possible to reduce obstructions when passing through the passage formed between the shelf devices. The actuators 7 and 8 may be fixed, or their positions may be adjustable in the same direction as the direction of movement of the shelf device.

Each shelf device 1 has a control circuit, one of which is a main control circuit 10, and in this embodiment, it is provided in the leftmost shelf device 1A, and the other shelf devices 1B, 1C, 1D Each of the sub control circuits 11
B, 11C, 11D, each motor 4
Controls B, 4C, and 4D. All of these control circuits 10 and 11 are connected to each other by required signal cables and power cables. Reference numeral 12 denotes a cable support body disposed between each shelf device 1 for accommodating the cable, which is formed with a concave cross section, and a pair of cable supports are pivoted to each other at one end, and the other end is connected to the cable support body 12. is pivoted to the top plate of an adjacent shelf device, and is configured to expand and contract as the shelf device moves.

The shelf devices 1A, 1B, 1C, and 1D each have passage switches 13A, 13B, 13C, and 13D, such as push button type, for inputting signals, and reset switches 14A, 14B, 14C, and 14D. In this case, the switches 13 and 14 are provided at the end of each shelf device on the aisle side, but there is no need to limit their positions. FIG. 8 is a block diagram of the main control circuit 10, and its passage control circuit 15.
A is applied with a signal from the path switch 13A and others. The path control circuit switch 15A has output terminals 16A, 17A, 18A, and 19A, and the output terminal 16A is connected to the output terminal 16A when the first signal is input from the path switch 13A when no other path has been selected. , outputs a movement command signal instructing other shelf devices to move, and at the same time output terminal 17A outputs a passage selection signal. Passage switch 13 again
When A is pressed and it outputs a second signal,
The movement command signal of the output terminal 16A is stopped, and the output terminal 18A outputs a normal stop signal. The outputs of the output terminals 16A and 18A are switched by, for example, inverting a flip-flop.

When the passage switch 13A is pressed while the other passage selection signal indicating that another passage has already been selected is applied to the passage control circuit 15A, the output terminal 19A outputs an abnormal stop signal. (Hereinafter, the symbol of each output terminal is attached to the name of the signal output from the output terminal to represent the signal output from that output terminal.
For example, the movement command signal 16A is output from the output terminal 16A.
Indicates that the signal is output by The same applies to subsequent circuits. ) The reset circuit 20A is connected to the reset switch 14.
When the other path selection signal is input to the output terminal 21A which outputs the reset signal with the signal from A and the reset circuit 20A, the reset switch 14
It has an output terminal 22A that outputs an abnormal stop signal when A is operated. The stop control circuit 23A receives a normal stop signal 18A or an abnormal stop signal 19A, 22A.
When input, a stop signal is output from the output terminal 24A, and a stop signal is output from the output terminal 25A.

26A is a lamp control circuit, which turns on the RUN lamp 2 when the path selection signal 17A is input.
7A is turned on, and when the normal stop signal 18A is applied, the reset lamp 28A is turned on. Also,
If the passage switch 13A or the reset switch 14A is operated while another passage is selected and the other passage selection signal is applied to the passage control circuit 15A and the reset circuit 20A, the passage control circuit 15A is normally stopped. The signal 18A is not output, and the stop signal 25A output by the stop control circuit 23A based on the abnormal stop signal 19A or 22A is applied to the lamp control circuit 26A. The lamp control circuit 26A to which the normal stop signal 18A is not applied but the stop signal 25A is applied causes the reset lamp 28A to start blinking with its output, indicating that the stop is an abnormal stop.

Reference numeral 29 denotes a path formation completion determination circuit, which is a circuit that determines that the movement of the shelf device 1 that has been moved corresponding to the selected path has been completed. This circuit 29 is connected to its output terminal 3 when the motor ON signal indicating that all or any of the motors 4 is being driven is inputted from an adjacent shelf device.
A path formation completion signal is output from 0 and applied to the path control circuit 15A.

31A is a safety switch installed over almost the entire length of the lower part of the storage surface of each shelving device, which detects if there are people or goods in the aisle while the shelving device is moving. This will stop the shelf device. The output signal of this switch 31 is input to a safety switch input circuit 32A. This input circuit 32A switches the safety switch 31A when a motor ON signal that is output when any shelf device is moving is input.
When a signal is input from the lamp control circuit 26A and the stop control circuit 23A, the safety stop signal is
to be applied. And, this input circuit 32A has
Reset signal 21 output by reset circuit 20A
A is input.

FIG. 9 is a block diagram of the sub-control circuit 11B of the shelf device 1B, and the other sub-control circuits 11C, 1
Since the same applies to 1D, illustration thereof is omitted. Note that the sub control circuit 11 in the sub control circuits 11C and 11D
Circuits that are the same as each circuit in B are indicated by the same numerical symbol with C or D attached. This is main control circuit 1
The same is true between 0 and each sub-control circuit 11.
And passage control circuit 15B, reset circuit 20
B, stop control circuit 23B, lamp control circuit 26B
The circuits have the same output terminals as the corresponding circuits of the main control circuit 10 and operate in almost the same way, so a description thereof will be omitted.

The direction selection circuit 33B of the sub-control circuit 11B is a circuit for instructing the movement direction of each shelf device, and this circuit is connected to the direction selection circuits 33 of the left and right shelf devices. However, in this embodiment, since the shelf apparatus 1A does not move, a direction selection circuit is not required, and therefore, as shown in FIG. 8, the shelf apparatus 1A is connected to its path control circuit 15A.

When the aisle switch 13B of the shelf device 1B is operated and the movement command signal 16B is input to the direction selection circuit 33B, the direction selection circuit 33B sends the direction selection circuit 33 of the left shelf device 1A from its output terminal 34B to the left direction selection circuit 33B. The right command signal is applied to the direction selection circuit 33 of the right shelf device 1C from the output terminal 35B, and the left signal is input from the output terminal 37B to the start delay circuit 36B, so that the shelf device 1B is moved. Indicates that the direction is to the left. In addition, the passage switch 13 of the shelf device other than the shelf device 1B
For example, when the aisle switch 13A of the shelf device 1A is operated, a right command signal is input to the direction selection circuit 33B. Upon receiving the right command signal, the direction selection circuit 33B outputs a right signal from its output terminal 38B, inputs it to the delay circuit 36B, and resets the other path selection signal from its output terminal 39B with the path control circuit 15B. The right command signal 35B is applied to the circuit 20B, and the right command signal 35B is further applied to the shelf device 1C. When the aisle switch 13 of the shelf device 1C, 1D is operated, the direction selection circuit 3
3B receives the left command signal, and receives the left command signal 34B,
A left signal 37B and another path selection signal 39B are output.

The start delay circuit 36B has a timer and is a circuit that creates a time difference in the start of each shelf device when a plurality of shelving devices 1 move. Start delay circuit 3
When the shelf device 1B starts, a start signal is outputted from the output terminal 40B to inform the left and right shelf devices. When the left signal 37B is applied to the delay circuit 36B and the start signal 40A is applied from the shelf device 1A, or when the right signal 38B and the start signal 40C are applied from the shelf device 1C, It operates the timer it has, and after a certain period of time, the left signal 3 inputted from the direction selection circuit 38B
7B or right signal 38B, output terminal 4
Either the left signal from 1B or the right signal from output terminal 42B is applied to motor control circuit 43B.
In addition, left or right command signals 34, 3 are sent to the shelf device 1B.
5 is input, if there is no movement space in that command direction, that is, if a signal is being output from the limit switch in that direction, the delay will occur regardless of the start signal 40 input from the adjacent shelf device. Circuit 36B outputs a start signal. This also applies to the shelf devices 1C and 1D.

The motor control circuit 43B receives the input left signal 4.
1B or right signal 42B, motor 4B
A left drive signal is output from the output terminal 44B, and a right drive signal is output from the output terminal 45B. however,
When a signal is being output from limit switches 5B and 6B, no drive signal in that direction is output. When the drive signals 44B and 45B are output, the motor control circuit 43B outputs a motor ON signal from its output terminal 46B and a motor signal from its output terminal 47B. 32, delay circuit 36, and passage formation completion determination circuit 2 of the shelf device 1A.
9 is input. Motor signal 47B is applied to lamp control circuit 26B. That is, when the shelf apparatus starts moving, the lamp control circuit 26B turns on or blinks the lamp 27B. This operation is the same for the motor control circuits 43 of all shelf devices. Then, when a stop signal 24 is issued from any stop control circuit 23 of the main control circuit 10 and all the sub-control circuits 11, the stop signal 24 is sent to the motor control circuit 43 of all the sub-control circuits 11. All of the motors 4 that are being input and driven are stopped.

The start delay circuit 36B has its path switch 13
While B is pressed, it can be confirmed that the start signal 38 is input from the left and right shelf devices 1, and a signal is also input from either the left or right limit switches 5B, 6B, that is, the vehicle is stopped. , and when the motor ON signal 46B disappears, a passage formation completion signal is applied from the output terminal 48B to the passage control circuit 15B. In addition, passage switch 1
The shelf device in which 3 is not operated also outputs the path formation completion signal 48 when the same conditions as above are met, but the completion signal 48 in this case has no effect on other circuits. When the start signal 40 disappears, the timer of the delay circuit 36 is reset.

Lead wires 49, 5 for left and right limit switches 5, 6
0 is the delay circuit 36 of each sub-control circuit 11
and the motor control circuit 43. 51 is a motor drive circuit.

In this embodiment, the left command signal 34B input from the shelving device 1B is directly inputted as the other aisle selection signal to the aisle control circuit 15A, and is used as the start signal 40A of the shelving device 1A to delay the shelf device 1B. It is input to circuit 36B. When the shelf apparatus 1A is also made movable, a start delay circuit, a motor control circuit, and a motor may be added thereto in place of the direction selection circuit and passage formation determination circuit 29. Further, in this embodiment, the passage switch 13 is provided with a run lamp 2.
7. Reset switch 14 and reset lamp 28
Since the lamps 27 and 28 are not shown in FIG. 1 because the lamps 27 and 28 are incorporated in
28 can be provided independently, and the lamp 2
When 7 and 28 are provided independently, they are exposed on the outer surface of each shelf device. And the run lamp 27 is
The light may be turned on when the passage of the shelf device is selected, and the light may be turned on when the passage of another shelf device is selected. However, dedicated run lamps can be provided for each purpose. The number of run lamps 27 can be set arbitrarily, whether they are used for dual purposes or for exclusive use. Similarly, the number of reset lamps 28 can be plural. The first signal and the second signal are transmitted through one path switch 13.
However, dedicated switches can be provided for each signal.

The formation of the passage in this device is changed from a state in which all the shelf devices are concentrated to the left as shown in Figs.
The following describes the case of forming.

When aisle B is selected, operate the aisle switch 13B of the shelf device 1B to switch the aisle control circuit 15B.
A first signal is input to. The path control circuit 15B to which the first signal has been input inputs the movement command signal 16B to the direction selection circuit 33B and the path selection signal 17B to the lamp control circuit 26B. As a result, the run lamp 27B lights up to indicate that passage B has been selected, and the direction selection circuit 33B inputs the left command signal 34B to the shelf device 1A and the right command signal 35B to the shelf device 1C. Since the shelf device 1A is a fixed shelf, the left command signal 34B is sent directly to the shelf device 1A.
The left start signal 40A is applied to the delay circuit 36B of the shelf device 1B. In the shelf device 1A, the left command signal 34B is also input as the other aisle selection signal 39 to the aisle control circuit 15A and the reset circuit 20A.
On the other hand, since the direction selection circuit 38B applies the left signal 37B to the delay circuit 36B, when the left start signal 40A is input from the shelf device 1A to the delay circuit 34B, a timer is activated in the delay circuit 36B for a certain period of time. Afterwards, preparations for starting the shelf device 1B to the left are completed. However, since the output of the left limit switch 5B is input to the delay circuit 36B and the motor control circuit 43B, the left drive signal 44B is not output from the motor control circuit 41B, and the shelf apparatus 1B does not move. Note that the left signal 3 is output from the direction selection circuit 33B.
7B is input to the delay circuit 36B, the start signal 40B from the shelf device 1B is transmitted to the shelf device 1A,
1C, but the shelf device 1A is a fixed shelf,
Since the shelf device 1C selects the right direction and receives a signal from the right shelf device 1D, the start signal 40B does not affect the operation of the circuits of the shelf devices 1A and 1C.

The direction selection circuit 33C of the shelf device 1C, which has received the right command signal 35B from the direction selection circuit 33B of the shelf device 1B, applies the right command signal 35C to the direction selection circuit 33D of the shelf device 1D. Therefore, the direction selection circuits 33C and 33D correspond to the respective delay circuits 36C and 33D.
Right signals 38C, 38D are applied to 6D, and passage control circuits 15C, 15D and reset circuits 20C,
Other path selection signals 39C and 39D are applied to 20D and 20D. Then, the direction selection circuit 33D of the shelf device 1D
outputs the right command signal 35D, but since the shelf device 1D is located at the right end, the right command signal 35D becomes the right start signal 40 as shown in FIG. 7 and is sent to the delay circuit 36D of the shelf device 1D. is input.

As described above, the direction selection circuit 3 is connected to the delay circuit 36D of the shelf device 1D to which the right start signal 40 is applied.
Since the right signal 38D has already been applied from 3D, the timer is activated by these signals, and after a certain period of time, the delay circuit 36D is activated by the motor control circuit 43D.
A right signal 42D is applied to. As a result, the motor control circuit 43D confirms that the right limit switch 6D is not outputting a signal, and the right drive signal 43D confirms that the right limit switch 6D is not outputting a signal.
5D is applied to the motor 4D, and the motor 4D is driven in a direction to move the shelf device 1D to the right. The shelf device 1D moves rightward by driving the motor 4D.
While the motor 4D is driving, the motor control circuit 43D outputs the motor ON signal 46D to notify all other shelving devices that the shelving device 1D is moving, and also controls the lamp to which the motor signal 47D is input. The circuit 26D uses the signal to turn on or blink the run lamp 27D to indicate that the shelf device 1D is moving.

When the shelf device 1D starts as described above, it is sent as a start signal 40 to the delay circuit 3 of the shelf device 1C.
Input to 6C. In the delay circuit 36C to which the start signal 40D is input, the timer is activated and after a certain period of time, by applying the right signal 42C to the motor control circuit 43C, the shelf device 1C is slightly delayed in time from the start signal 40D as well. and start to the right.
When the right limit switch 6D of the shelving device 1D that has started comes into contact with the actuator 8D and the signal is input to the delay circuit 36D and the motor control circuit 43D, the motor ON signal 46D is stopped and the shelving device 1D is stopped. do. The shelf device 1C also stops when its right limit switch 6C contacts the actuator 8C. When the shelf apparatuses 1D and 1C stop sequentially, the respective motor signals 47 disappear, so the run lamps 27C and 27D go out, and a passage B is formed as shown in FIG. 3.

When the shelf device 1C starts, its delay circuit 36C
From there, a start signal 40 is sent to the delay circuit 36B of the shelf device 1B.
C is being input, but since the motor ON signal 46C is being input at this time, the delay circuit 36B does not output a path formation completion signal. When the shelf device 1C stops and its motor ON signal 46C disappears, the start signals 40A, 4 are sent from the shelf devices 1A, 1C.
After confirming that 0C and shelf device 1B have stopped, delay circuit 3
6B, a path formation completion signal 48B is applied to the path control circuit 15B.

Upon receiving the passage formation completion signal 48B, the passage control circuit 15B stops outputting the movement command signal 16B and applies the normal stop signal 18B to the stop control circuit 23B. Input signal 24B. Furthermore,
The stop signal 25B and the normal stop signal 18B are input to the lamp control circuit 26B, and the lamp control circuit 26
B lights up the reset lamp 28B. In this state, the other reset lamps 28 are not lit, and the stop signal 24B continues to be output.
Since all the shelf devices are maintained in a stopped state, there is no risk of the shelf device moving unexpectedly, and even if another path is selected, it will not move, making it safe. That is, the operator can work safely by entering the passageway after confirming that the reset lamp 28B is lit.

When the use of passage B is finished, operate the reset switch 14B of the shelf device 1B, and reset the reset circuit 20B.
When a signal is input to the path control circuit 15B, the reset circuit 20B inputs a reset signal 21B to the path control circuit 15B and the stop control circuit 23B, thereby resetting all circuits to enable selection of another path.

While the shelf devices 1D and 1C are moving, the first
Operate the passage switch 13B to which the signal was input again, and then input the second signal to the passage control circuit 15B.
When inputted, the output of the movement command signal 16B is stopped and a normal stop signal 18B is issued, so the moving shelf devices 1D and 1C stop at that position and form a passage narrower than the predetermined width. That is, even if the width of the passage is narrow, the time required to use the shelf device can be shortened by outputting the second signal when there is no problem in using the shelf device. This stop occurs in the same circuit state as when the limit switches 5 and 6 are operated, so if the same passage switch is operated again, each shelf apparatus will restart. In addition, in this stop, the circuit stops in the same state as when the limit switches 5 and 6 are operated, so the reset lamp 28B lights up and the other reset lamps 2
8 is not lit.

When the aisle switch 13B is operated, the shelf device 1
While D and 1C are moving, the aisle switch 13 or reset switch 14 of any shelf device other than the shelf device 1B, that is, the shelf device to which the other aisle selection signal 39 is input, is operated. Then, an abnormal stop signal is input to the stop control circuit 23 from the output terminal 19 of the path control circuit 15 or the output terminal 22 of the reset circuit 20. Therefore, the moving shelf device stops at that position. At this time of stop, the stop signal 25 is applied to the lamp control circuit from the stop control circuit, and since the normal stop signal 18 is not output, the reset lamp 28 starts blinking, indicating an abnormal stop. Note that even if the first signal is input from the aisle switch 13B and the reset switch 14B of the shelf device 1B is operated while the shelf devices 1D and 1C are moving, the reset circuit 20B
Since no other path selection signal is input to , no change occurs.

After the abnormal stop, when either of the switches 13, 14 is operated and the reset switch 14 of the shelf device is operated, the output of the abnormal stop signal is stopped, the reset lamp 28 is turned off, and the shelf device restarts. In order to stop the shelf device in the event of an abnormality, the switches 13 and 14 of either shelf device may be operated, so that the stop operation in the event of an abnormality is easy.

The passage is formed as described above, but if there is a person or article in front of the shelving device while it is moving and it contacts the safety switch 31, the signal is sent to the safety switch input circuit 32.
The input circuit 32 outputs a safety stop signal and applies it to the stop control circuit 23.
Therefore, the stop signal 24 issued by the stop control circuit 23 is sent to all the shelving devices to stop all the shelving devices. On the other hand, the safety stop signal is also input to the lamp control circuit 26 of the shelf device and causes the reset lamp 28 to flash, so it is safe and the location of the obstacle can be clearly seen, allowing you to remove it etc. It can be done quickly. Further, since the motor signal 47 disappears, when the obstacle is removed, the safety stop signal disappears, and when the reset switch 14 is operated, the blinking reset lamp 28 goes out and the shelf apparatus restarts.

As described above, in the present invention, when the shelf apparatus moves and stops after forming the selected passage, the stop signal 25 and the normal stop signal 18 are applied to the lamp control circuit 26, so that Since the reset lamp 28 is lit, it can clearly indicate that the shelf is in use. If an abnormal situation occurs while the movable shelf is moving and the switch 13 or 14 is operated, or if an article or person comes into contact with the safety switch 31 of the shelving device, a stop signal 25 is activated.
only, or the safety stop signal output from the safety switch input circuit 32 is sent to the lamp control circuit 2.
6, the reset lamp 28 starts blinking, indicating that the movable shelf is stopped due to an abnormal situation or an obstacle existing in front of the movable shelf.

In this way, it is easy to tell from the reset lamp 28 that the movable shelf is in use, and when it is a normal stop, the reset lamp 28 is simply lit, but when it is abnormally stopped, Alternatively, when the moving shelf device collides with an obstacle and the safety switch is activated to make a safety stop, the reset lamp 28 flashes, so that the stop can be clearly distinguished and displayed depending on the cause.
When a lamp blinks repeatedly, it can attract people's attention more strongly than when it is simply turned on, so there is no risk of it being overlooked, and the purpose of the display is more reliably achieved. I can do it. Therefore, it is possible to prevent the next operation from being performed by mistake despite an abnormal stop or an obstacle. In addition, the safety switch input circuit provided for each shelving device receives the motor ON signal output from the control circuit only while one of the shelving devices is moving, and also receives the signal from the safety switch. Since the safety stop signal is input to the lamp control circuit only at certain times, there is no risk of accidentally touching the safety switch of a stopped shelving device and causing all the shelving devices to come to a safety stop, which is an abnormal stop. It is.

[Brief explanation of drawings]

The drawings show an embodiment of the present invention, and FIG. 1 is a front view, FIG. 2 is a plan view, FIG. 3 is a plan view with a passage formed, FIG. 4 is an enlarged front view of the limit switch section, and FIG. Figure 6 is an enlarged cross-sectional side view of the limit switch section; Figure 6 is an enlarged plan view of the cable support;
This figure is a block diagram of the entire circuit, FIG. 8 is a block diagram of the main control circuit, and FIG. 9 is a block diagram of the sub-control circuit. DESCRIPTION OF SYMBOLS 1... Shelf device, 4... Reversible motor, 5... Left limit switch, 6... Right limit switch, 7, 8... Actuator, 10... Main control circuit, 11... Sub-control circuit 13... Passage switch, 14... Reset switch, 15... Passage control circuit, 20...reset circuit,
23...stop control circuit, 26...lamp control circuit, 2
9... Passage formation completion determination circuit, 31... Safety switch, 33... Direction selection circuit, 36... Start delay circuit, 43... Motor control circuit.

Claims (1)

[Claims] 1. A plurality of shelf devices each having a passage switch, a reset switch, and a reset lamp exposed on the outer surface, and each having a safety switch at a predetermined position are arranged perpendicularly to the storage surface thereof. In the stop display device for electric movable shelves, which are movable in the direction of The control circuit includes at least an aisle control circuit, a reset circuit, a stop control circuit, a safety switch input circuit, and a lamp control circuit, and further includes a motor control circuit for the movable shelving device. Based on the output movement command signal, a left or right command signal is output to the control circuit of the adjacent shelf device on the left or right, and if a left or right command signal is input from the control circuit of the adjacent shelf device, , the other path selection signal is input to the path control circuit and the reset circuit based on the signal, and the path control circuit receives the first signal from the path switch in a state where the other path selection signal is not input. In response, a movement command signal is output, and a passage selection signal is output to the lamp control circuit, and a second signal is generated by operating the passage switch again, or passage formation completion is generated when a passage of a predetermined width is formed. Upon receiving the signal, the movement command signal is stopped, and a normal stop signal is output to the stop control circuit and the lamp control circuit.Also, with the other path selection signal being input, the stop control circuit receives the signal from the path switch. The reset circuit receives the signal from the reset switch and outputs a reset signal to the path control circuit and the safety switch input circuit to enable selection of another path, An abnormal stop signal is output to the stop control circuit when the other aisle selection signal is input, and the safety switch input circuit is a motor control circuit that is input only when any shelf device is moving.
It receives the ON signal and a signal from the safety switch that is generated when a collision occurs with an obstacle, and outputs a safety stop signal to the stop control circuit and lamp control circuit, and the stop control circuit stops normally. Outputs a stop signal to the motor control circuit of each shelf device based on the signal or abnormal stop signal, outputs a stop signal to the lamp control circuit, and outputs a stop signal to the motor control circuit of each shelf device based on the safety stop signal. The motor control circuit receives a left or right command signal to drive the motor of that shelf device, and also sends a motor ON signal to the control circuit of each shelf device and a motor signal to the lamp control circuit of that shelf device. The lamp control circuit controls the lighting and blinking of the reset lamp connected to it. When a normal stop signal and a stop signal are input to the lamp control circuit, the reset lamp of that shelf device lights up, and when an abnormal stop signal is input, the reset lamp of that shelf device flashes, and a safety stop signal is input. the reset lamp of the shelf device flashes, and the reset lamp continues to be lit or blinking until the circuit is reset by operating the reset switch of the shelf device whose reset lamp is lit or blinking. Stop display device for mobile shelves.