JP3822134B2 - Production line compressed air supply control device and production line compressed air supply control system using the same - Google Patents

Description

[0001]
BACKGROUND OF THE INVENTION
The present invention relates to a compressed air supply control device of a production line that supplies compressed air of a production line from a compressor, and a compressed air supply control system of a production line using the same.
[0002]
[Prior art]
In a production process having a plurality of production lines 100, as shown in FIG. 5, a single large compressor 101 branches to each production line 100 to supply compressed air. This is because the efficiency is better than using a small compressor 102 for each production line 100 as shown in FIG.
[0003]
[Problems to be solved by the invention]
However, when the fluctuation of the production amount is large, not all the production lines 100 may be operated depending on the day. Even in such a case, as shown in FIG. 5, in order to supply compressed air from one large compressor 101 to each production line 100, the compressed air is not supplied to the production line 100 that is stopped. There was a problem that air leakage occurred from the production apparatus of the production line 100 that was supplied and stopped.
[0004]
Therefore, the compressor 101 supplies extra compressed air for such air leakage, and there is a problem that power consumption of the compressor 101 is wasted.
[0005]
Furthermore, even when one production line 100 is suspended for maintenance or the like, compressed air is supplied from the compressor 101 to the suspended production line 100. There is a problem that 100 production apparatuses may operate erroneously.
[0006]
The present invention has been made in view of the above problems, and in a production process having a plurality of production lines, prevents air leakage from the production apparatus of the production line being stopped, thereby reducing waste of power consumption of the compressor. Thus, it is an object of the present invention to provide an air supply device for a production line that aims to improve production safety by reducing production costs and preventing malfunction of the production device.
[0007]
[Means for Solving the Problems]
The compressed air supply control device for a production line according to claim 1 of the present invention made to achieve the above object includes an air supply pipe for a production line for supplying compressed air from a compressor to the production line, and the production A compressed air supply control valve provided in the middle of the line air supply pipe, a valve control air supply pipe branched from the production line air supply pipe on the compressor side of the compressed air supply control valve, and compressed air A valve control cylinder for controlling the opening / closing operation of the compressed air supply control valve, and a switching operation of the first state or the second state depending on the presence or absence of the supply of compressed air to the operation port. A valve that controls the operation of the valve control cylinder by switching the supply direction of compressed air, In the state, the valve control cylinder supplies the valve control cylinder with the compressed air supplied from the valve control air supply pipe so that the valve control cylinder performs the operation of closing the compressed air supply control valve. Compressed air supplied from the valve control air supply piping is supplied to the valve control cylinder so that the control cylinder opens the compressed air supply control valve, and the operation port receives supply of compressed air. A cylinder control valve that supplies a part of the compressed air supplied from the valve control air supply pipe to the operation port side so as to continue, and is connected according to the operation of the operation unit on the compressor side than the cylinder control valve The presence or absence of compressed air supply to the operation port side of the cylinder control valve A valve for controlling the start of switching of the cylinder control valve to the second state by switching, and in the connected state, compressed air supplied from the valve control air supply pipe is supplied to the operation port side of the cylinder control valve; An operation valve that shuts off the supply of compressed air to the operation port side of the cylinder control valve, and a valve that switches a supply source of compressed air to the operation port of the cylinder control valve in the shut-off state. A first port for receiving compressed air supplied from the cylinder control valve and a second port for receiving compressed air supplied from the operating valve, and one of the first port and the second port on the high pressure side. And a high pressure side selection switching valve for supplying compressed air supplied from the cylinder control valve to the operation port of the cylinder control valve. It is what.
[0008]
A compressed air supply control system for a production line according to claim 2, wherein a plurality of the production line air supply pipes are branched from a single compressor, and each of the production line air supply pipes is provided with the claim. The compressed air supply control device for the production line described in 1 is provided.
[0009]
DETAILED DESCRIPTION OF THE INVENTION
Hereinafter, embodiments of the present invention will be described with reference to the drawings. A compressed air supply control device (hereinafter referred to as “control device”) 1 for a production line according to this embodiment is a production line that supplies compressed air from a compressor 2 to a production line 3 as shown in FIGS. 1 and 3. Air supply pipe 4, compressed air supply control valve 5 provided in the middle of production line air supply pipe 4, and production line air supply pipe 4 on the compressor 2 side of compressed air supply control valve 5. The branched valve control air supply pipe 6, the valve control cylinder 7 that controls the opening / closing operation of the compressed air supply control valve 5, the cylinder control valve 8 that controls the operation of the valve control cylinder 7, and the cylinder control The operation valve 1 that controls the start of switching of the cylinder control valve 8 to the second state in accordance with the operation of the operation unit 9 on the compressor 2 side of the valve 8. When those having a high pressure side selection switch valve 14 for supplying compressed air supplied from the first port 11 or second port 12 to the pilot port 13 of the cylinder control valve 8. This will be described in more detail below.
[0010]
The compressed air supply control valve 5 is a two-position switching valve having a compressor side port 15 that receives supply of compressed air from the production line air supply pipe 4 and a production line side port 16 that supplies compressed air to the production line 3. is there.
[0011]
The valve control air supply pipe 6 is branched from the production line air supply pipe 4 on the compressor 2 side of the compressed air supply control valve 5, and the first port 17 of the cylinder control valve 8 and the operation valve 10 of the operation valve 10 are branched. It is connected to the first port 18.
[0012]
The valve control cylinder 7 produces the open side port 20 provided in the open state switching chamber 19 for switching the compressed air supply control valve 5 to the open state in which the production line air supply pipe 4 communicates, and the compressed air supply control valve 5. It has two ports of the closed side port 22 provided in the closed state switching chamber 21 which switches to the closed state by which the line air supply piping 4 was interrupted | blocked.
[0013]
Control of the opening / closing operation of the compressed air supply control valve 5 is performed by supplying compressed air to the open state switching chamber 19 of the valve control cylinder 7 and when the piston 23 descends in the drawing, the compression is performed in conjunction with the movement of the piston 23. When the air supply control valve 5 is switched to the open state (see FIG. 3), compressed air is supplied to the closed state switching chamber 21 of the valve control cylinder 7 and the piston 23 rises in the figure, the movement of the piston 23 is interlocked. This is done by switching the compressed air supply control valve 5 to the closed state (see FIG. 1).
[0014]
The cylinder control valve 8 is a two-position switching valve having an operation port 13, a first port 17, a second port 24, a third port 25 and a fourth port 26.
[0015]
The operation control of the valve control cylinder 7 is performed depending on whether compressed air is supplied to the operation port 13 of the cylinder control valve 8, and when there is no compressed air to the operation port 13, the cylinder control valve 8 is in the first state. Thus, when compressed air is supplied to the operation port 13, the cylinder control valve 8 is set to the second state.
[0016]
Here, as shown in FIG. 1, the first state is that the operation port 13 is not supplied with compressed air from the high pressure side selection valve, and the first port 17 of the cylinder control valve 8 is the valve control air. This is a state in which the compressed air is supplied from the supply pipe 6 and the third port 25 of the cylinder control valve 8 supplies the compressed air to the closed port 22 of the valve control cylinder 7. When the third port 25 of the cylinder control valve 8 starts to supply compressed air to the closed port 22 of the valve control cylinder 7, the second port 24 of the cylinder control valve 8 opens the valve control cylinder 7. In response to the supply of compressed air from the port 20, the fourth port 26 of the cylinder control valve 8 discharges the compressed air to the outside of the cylinder control valve 8.
[0017]
As shown in FIG. 3, the second state means that the operation port 13 is supplied with compressed air from the high-pressure side selection valve, and the position of the cylinder control valve 8 is switched, so that the first port 17 of the cylinder control valve 8 is switched. Is supplied with compressed air from the valve control air supply pipe 6, and the second port 24 of the cylinder control valve 8 is compressed to the open side port 20 of the valve control cylinder 7 and the first port 11 of the high pressure side selection switching valve 14. It is the state of supplying air. Further, when the cylinder control valve 8 is switched from the first state to the second state, the third port 25 of the cylinder control valve 8 receives supply of compressed air from the closed side port 22 of the valve control cylinder 7 to control the cylinder. The fourth port 26 of the valve 8 discharges compressed air to the outside of the cylinder control valve 8.
[0018]
The operation valve 10 includes a control port 9, a first port 18 that receives supply of compressed air from the valve control air supply pipe 6, and a second port that supplies compressed air to the second port 12 of the high-pressure side selection switching valve 14. 27 is a two-position switching valve.
[0019]
The control for starting the switching of the cylinder control valve 8 to the second state is performed by operating the operation unit 9 to perform a switching operation for bringing the operation valve 10 into a connected state or a disconnected state. This is done by switching whether or not compressed air is supplied to the second port 12. In the present embodiment, the operation unit 9 is an operation button and is manually operated by an operator. However, the present invention is not limited to this, and for example, the operation unit 9 may be operated by computer control. .
[0020]
Here, as shown in FIG. 2, the connection state means that the operation portion 9 is pushed to switch the position of the operation valve 10, and the first port 18 of the operation valve 10 is supplied with compressed air from the valve control air supply pipe 6. In this state, the second port 27 of the operation valve 10 is supplied with compressed air to the second port 12 of the high-pressure side selection switching valve 14.
[0021]
In the shut-off state, the position of the operation valve 10 is switched from the connected state by releasing the operation unit 9, and the second port 27 of the operation valve 10 supplies compressed air to the second port 12 of the high-pressure side selection switching valve 14. It is a state that does not.
[0022]
The high pressure side selection switching valve 14 includes a first port 11 that receives supply of compressed air from the second port 24 of the cylinder control valve 8 and a second port 12 that receives supply of compressed air from the second port 27 of the operation valve 10. The compressed air supplied from either one of the two ports 11 and 10 is supplied to the operation port 13 of the cylinder control valve 8.
[0023]
Hereinafter, the operation of the control device 1 according to the embodiment of the present invention will be described with reference to the drawings. First, as shown in FIG. 1, the compressor 2 is operated in the initial state in which the compressed air supply control valve 5 is closed, the cylinder control valve 8 is in the first state, and the operation valve 10 is in the cutoff state. In this state, compressed air is not supplied to the production line 3. In this state, when the operation button constituting the operation unit 9 of the operation valve 10 is pressed, the operation valve 10 is switched from the shut-off state to the connection state, and the compressed air supplied from the valve control air supply pipe 6 Via the second port 12 of the high pressure side selection switching valve 14. As a result, the second port 12 of the high pressure side selection switching valve 14 becomes the high pressure side, and the first port 11 of the high pressure side selection switching valve 14 is closed, so the compression supplied to the second port 12 of the high pressure side selection switching valve 14. Air is supplied to the operation port 13 of the cylinder control valve 8, the operation port 13 is activated, and the cylinder control valve 8 is switched from the first state to the second state. When the operation button constituting the operation unit 9 of the operation valve 10 is released, the operation valve 10 is again switched from the connected state to the cut-off state by the restoring force of the spring 28 provided in the operation valve 10.
[0024]
When the cylinder control valve 8 is switched to the second state, as shown in FIG. 3, the compressed air supplied from the valve control air supply pipe 6 passes through the cylinder control valve 8 and opens the port on the valve control cylinder 7. Therefore, as described above, compressed air is supplied to the open state switching chamber 19 of the valve control cylinder 7 so that the valve 5 is opened, and the production line air supply pipe 4 communicates.
[0025]
At the same time, a part of the compressed air supplied from the valve control air supply pipe 6 is also supplied to the first port 11 of the high pressure side selection switching valve 14 via the cylinder control valve 8, so that the high pressure side selection is performed. In the switching valve 14, the first port 11 becomes the high pressure side, and the second port 12 of the high pressure side selection switching valve 14 is closed, so that the compressed air supplied to the first port 11 of the high pressure side selection switching valve 14 is the cylinder control valve 8. The operation port 13 is operated, and the cylinder control valve 8 maintains the second state.
[0026]
Therefore, as long as the compressor 2 is operating, the cylinder control valve 8 is maintained in the second state, and the compressed air supply control valve 5 is maintained in the open state in which the production line air supply pipe 4 is communicated. The device 1 is in a steady open state. Thereby, compressed air is supplied from the compressor 2 to the production line 3, and each production apparatus of the production line 3 operates.
[0027]
Next, when the compressor 2 is stopped, the compressed air is not supplied to the 1 port 17 of the cylinder control valve 8, and the compressed air is supplied to the operation port 13 of the cylinder control valve 8 via the high pressure side selection switching valve 14. While stopping, supply of the compressed air to the open state switching chamber 19 of the valve control cylinder 7 is also stopped. The cylinder control valve 8 is again switched from the second state to the first state by the restoring force of the spring 29 provided in the cylinder control valve 8. Thereby, the compressed air is not supplied to the production line 3, and each production apparatus of the production line 3 stops.
[0028]
When the compressor 2 is restarted in this state, the cylinder control valve 8 is in the first state, so that compressed air is supplied to the closed state switching chamber 21 of the valve control cylinder 7 and the compressed air supply control valve 5 is closed. Then, the production line air supply pipe 4 is shut off, and the control device 1 returns to the initial state (see FIG. 1). Therefore, the control device 1 is not in a steady open state, and the compressed air from the compressor 2 is not supplied to the production line 3, so that each production device in the production line 3 does not operate. That is, even if the compressor 2 is restarted, the compressed air supply control is performed unless the operation button 9 is pressed to switch the operation valve 10 from the shut-off state to the connected state and the cylinder control valve 8 is switched from the first state to the second state. The valve 5 is not opened, and the production line air supply pipe 4 is not communicated, so that the compressed air from the compressor 2 is not supplied to the production line 3.
[0029]
As shown in FIG. 4, the production line compressed air supply control system includes a plurality of production line air supply pipes 4 branched from one compressor 2, and the production line air supply pipe 4 In the case of a system in which the control device 1 is provided for each, when the operation unit 9 of the operation valve 10 of the control device 1 of the desired production line 3 is operated with the compressor 2 in operation, this desired production is performed. Only the control device 1 of the line 3 is in a steady open state (see FIG. 3), and the control devices 1 of the other production lines 3 are in an initial state (see FIG. 1). It can be operated. Then, when the compressor 2 is stopped, all the production lines 3 are stopped, and even if the compressor 2 is restarted, the control device 1 is in a steady state unless the operation portion 9 of the operation valve 10 of the control device 1 is operated. Since it does not become an open state, all the production lines 3 maintain an initial state.
[0030]
【The invention's effect】
As described above, the compressed air supply control device for a production line according to claim 1 of the present invention includes a production line air supply pipe for supplying compressed air from a compressor to the production line, and the production line air supply pipe. A compressed air supply control valve provided in the middle of the engine, a valve control air supply pipe branched from the production line air supply pipe on the compressor side of the compressed air supply control valve, and an opening / closing operation of the compressed air supply control valve A valve control cylinder for controlling the operation of the cylinder, a cylinder control valve for controlling the operation of the valve control cylinder, and a switching operation of the cylinder control valve to the second state by a manual operation button on the compressor side of the cylinder control valve. The control valve for controlling the air and the compressed air supplied from the first port 11 or the second port Since it has a high pressure side selection switching valve that supplies to the operation port of the control valve, unless the cylinder control valve is switched from the first state to the second state by operating the operation part of the compressed air supply control device of the production line, Although the compressed air supply control device of the production line does not enter the open state, once the cylinder control valve enters the second state, the steady open state can be maintained while the compressor is operating, and when the compressor is stopped, Even if the cylinder control valve is switched from the second state to the first state and the compressor is restarted in this state, the cylinder control valve remains in the first state and the compressed air supply control valve is closed. There is an advantage that compressed air is not supplied to the line.
[0031]
Further, in the compressed air supply control system for a production line according to claim 2 of the present invention, a plurality of the production line air supply pipes are branched from a single compressor, and the production line air supply pipes are provided. Since the compressed air supply control device for the production line according to claim 1 is provided for each, the compressed air for each production line is operated unless the operation portion of the operation valve of the compressed air supply control device for each production line is operated. Since the supply control device maintains the initial state and compressed air is not supplied to each production line, there is an advantage that it is possible to prevent air leakage from the production device of the production line that is stopped among the plurality of production lines. is there. Thereby, since the compressor does not supply extra compressed air, there is an advantage that waste of power consumption of the compressor can be reduced.
[0032]
In addition, when one production line is suspended for maintenance of the production equipment, the production equipment of the production line operates the operation valve of the compressed air supply control device of the production line provided in the production line. Since it does not operate unless the button is operated, there is an advantage that malfunction during maintenance can be prevented.
[0033]
That is, according to the present invention, in a production process having a plurality of production lines, by preventing air leakage from the production apparatus of the production line being stopped, the waste of power consumption of the compressor is reduced, and the production cost is reduced. There is an advantage that the safety of work can be improved by reducing the malfunction and preventing malfunction of the production apparatus.
[Brief description of the drawings]
FIG. 1 is a schematic circuit diagram showing an initial state of a compressed air supply control device for a production line according to an embodiment of the present invention.
FIG. 2 is a schematic circuit diagram showing a connection state of operation valves of the compressed air supply control device of the production line according to the embodiment of the present invention.
FIG. 3 is a schematic circuit diagram showing a steady open state of the compressed air supply control device of the production line according to the embodiment of the present invention.
FIG. 4 is a schematic circuit diagram showing a configuration of a production process according to the embodiment of the present invention.
FIG. 5 is a schematic circuit diagram showing a configuration of a conventional production process.
FIG. 6 is a schematic circuit diagram showing a configuration of a conventional production process.
[Explanation of symbols]
DESCRIPTION OF SYMBOLS 1 Compressed air supply control apparatus of a production line 4 Air supply piping for production lines 5 Compressed air supply control valve 6 Air supply piping for valve control 7 Valve control cylinder 8 Cylinder control valve 10 Operation valve 14 High pressure side selection switching valve

Claims (2)

Production line air supply piping for supplying compressed air from the compressor to the production line;
A compressed air supply control valve provided in the middle of the production line air supply pipe; a valve control air supply pipe branched from the production line air supply pipe on the compressor side of the compressed air supply control valve;
A valve control cylinder that operates with compressed air and controls the opening and closing operation of the compressed air supply control valve;
A valve that performs a switching operation of the first state or the second state depending on whether or not compressed air is supplied to an operation port, and controls the operation of the valve control cylinder by switching a supply direction of compressed air to the valve control cylinder. In the first state, compressed air supplied from the valve control air supply pipe is supplied to the valve control cylinder so that the valve control cylinder performs an operation of closing the compressed air supply control valve. In the second state, , Supplying the valve control cylinder with compressed air supplied from the valve control air supply pipe so that the valve control cylinder opens the compressed air supply control valve; A part of the compressed air supplied from the valve control air supply pipe is operated so as to continue to be supplied. A cylinder control valve for supplying the port side,
In the compressor side of the cylinder control valve, the connection state or the cutoff state is switched in accordance with the operation of the operation portion, and the presence or absence of the supply of compressed air to the operation port side of the cylinder control valve is switched. A valve that controls the start of switching to the second state of the control valve, and in the connected state, the compressed air supplied from the valve control air supply pipe is supplied to the operation port side of the cylinder control valve and shut off. In the state, an operation valve that shuts off the supply of compressed air to the operation port side of the cylinder control valve;
A valve for switching a supply source of compressed air to the operation port of the cylinder control valve, the first port receiving supply of compressed air from the cylinder control valve and a first port receiving supply of compressed air from the operation valve A high pressure side selection switching valve for supplying compressed air supplied from one of the first port and the second port to the operation port of the cylinder control valve. A compressed air supply control device for a production line. A plurality of the production line air supply pipes are branched from a single compressor, and the production line compressed air supply control device according to claim 1 is provided in each of the production line air supply pipes. A compressed air supply control system for a production line.

Images