JP2006023207A - Air supply operation device - Google Patents

Abstract

<P>PROBLEM TO BE SOLVED: To provide an air supply operation device capable of reducing a work burden to a worker by preventing useless consumption of supply air. <P>SOLUTION: This air supply operation device 1 has an air micro measuring apparatus 7 operated by the supply air A1, a main valve 2 for supplying the supply air 1 and cutting off supply to the air micro measuring apparatus 7, an opening operation valve 3 constituted to open the main valve 2, and a timer operation means 4 constituted to close the main valve 2 after a predetermined time passes after opening the main valve 2. The timer operation means 4 is constituted to close the main valve 2 by supplying control air A2 to the main valve 2, when pressure in a tank 43 becomes predetermined preset pressure or more, by gradually storing a part of the supply air A1 flowing to the air micro measuring apparatus 7 from the main valve 2 in the tank 43, after opening the main valve 2. <P>COPYRIGHT: (C)2006,JPO&NCIPI

Description

  The present invention relates to an air supply operating device capable of supplying air to an air operating device for a predetermined set time and operating the air operating device for a predetermined time.

2. Description of the Related Art Conventionally, an air micrometer (air micrometer) that performs measurement using air (air) has been used in order to measure dimensions of a measurement target part in various measurement objects.
This air micrometer has a measurement engagement part having a dimension substantially the same as the outer diameter or inner diameter of the part to be measured, and is configured to eject air from the measurement engagement part. And, by engaging the measurement engagement part and the part to be measured, when the amount of air ejected from the measurement engagement part increases, utilizing the fact that the pressure drop in the measurement engagement part increases, The dimension of the part to be measured can be measured.

As an apparatus for supplying air to the air micrometer, for example, there is a supply air blocking apparatus disclosed in Patent Document 1.
The supply air shut-off device of Patent Document 1 includes an air control valve that opens and closes a supply passage that supplies compressed air to an air micrometer, and a switch mat that opens the air control valve. When the operator steps on the switch mat, the air control valve is opened and compressed air is supplied to the air micrometer to measure the dimension of the measured part. When the operator leaves the switch mat, the air micrometer Shut off the compressed air supply to Further, when the worker leaves the switch mat, a part of the compressed air is exhausted from the switch mat so that the air flow state in the air micrometer is not changed.

However, in the supply air shut-off device of Patent Document 1, compressed air is always exhausted even when the dimension of the measurement object is not measured by the air micrometer. Therefore, the compressed air is consumed wastefully.
Further, the compressed air is supplied to the air micrometer only while the operator steps on the switch mat. For this reason, when the dimension of the measurement object is being measured by the air micrometer, the operator must always step on the switch mat, which may increase the fatigue of the operator.

JP 11-132753 A

  The present invention has been made in view of such conventional problems, and it is an object of the present invention to provide an air supply operation device that can prevent wasteful consumption of supply air and reduce the work burden on an operator. is there.

The present invention includes an air operating device,
A switching valve that performs an opening operation to supply supply air to the air operating device, and performs a closing operation to shut off supply air to the air operating device;
Timer operating means configured to close the switching valve after a predetermined time has elapsed since the switching valve opened,
The timer actuating means gradually stores a part of the supply air flowing from the switching valve to the air operating device in the tank after the switching valve is opened, and the pressure in the tank becomes equal to or higher than a predetermined set pressure. In the air supply operating device, the control valve is supplied to the switching valve to close the switching valve.

The air supply operating device of the present invention has the switching valve and the timer operating means, and can supply supply air to the air operating device for a predetermined time and operate the air operating device for a predetermined time. .
In the air supply operating device, when the air operating device is not operated, the switching valve is closed, and supply of supply air to the air operating device is blocked by the switching valve. Therefore, when the air operating device is not operated, the supply air is not exhausted to the outside, and wasteful consumption of the supply air can be prevented.

  In the air supply operating device, when the air operating device is operated, the switching valve is opened, and supply of supply air from the switching valve to the air operating device can be started. When the switching valve is opened, part of the supply air supplied from the switching valve to the air operating device is gradually stored in the tank in the timer operating means. The timer actuating means can supply the control air to the switching valve and close the switching valve when the pressure in the tank exceeds a predetermined set pressure.

Therefore, the air operating device can operate for a period of time from when supply of supply air from the switching valve starts until the pressure in the tank reaches a predetermined set pressure. Thereby, the operator can operate the air operating device continuously only by performing an operation of opening the switching valve, and the work burden on the operator can be reduced.
Therefore, according to the air supply operation device, wasteful consumption of supply air can be prevented, and the work burden on the operator can be reduced.

A preferred embodiment of the present invention described above will be described.
In the present invention, the switching valve is connected to an opening operation valve for opening the switching valve, and the opening operation valve operates the operation portion to supply control air to the switching valve so as to open the switching valve. It is preferable to configure (claim 2).
In this case, the operator can operate the air operating device by operating the operation portion of the opening operation valve, thereby improving the workability.

The switching valve is connected to a supply air main pipe through which supply air flows. The timer operating means and the opening operation valve are connected to a control air main pipe through which control air flows. When the control air is supplied from the opening operation valve to the switching valve, the opening operation is performed to supply the supply air to the air operating device, and the control air is supplied from the timer operating means to the switching valve. Accordingly, it is preferable that the air supply device is configured to shut off the supply air to the air-operated device by performing a closing operation.
In this case, the air supply operating device can be simply configured by connecting the air main pipes to the switching valve, the timer operating means, and the opening operation valve.

In addition, the air operating device is an air micro measuring device that measures the dimension of the measurement target portion in the measurement object, and the air micro measurement device includes a measurement engagement portion that engages with the measurement target portion, and the measurement It is preferable to include an air outlet for ejecting supply air from the engagement portion toward the measurement target portion and a pressure detection portion for detecting the pressure of the supply air in the air micrometer ( Claim 4).
In this case, the air supply actuating device can measure the dimension of the part to be measured in the measurement object while preventing wasteful consumption of the supply air and reducing the work load on the operator.

The air operating device may be an air blowing device having an air nozzle that ejects air (supply air). This air blow apparatus can be used, for example, when blowing off chips from a workpiece after cutting.
The air operating device may be an air drive pump that operates using air (supply air) as a drive source. This air-driven pump can be used, for example, when delivering a liquid such as coolant, water, or medicine.

Further, it is preferable that a throttle valve for restricting a flow rate of supply air flowing into the tank is connected to the tank in the timer operating means.
In this case, the flow rate of the supply air stored in the tank can be appropriately adjusted by adjusting the opening of the throttle valve. Therefore, by adjusting the opening degree of the throttle valve, it is possible to appropriately adjust the time from when the timer operating means opens the switching valve until it closes.

Further, it is preferable that an auxiliary tank having a larger capacity than the tank is connected to the tank in the timer operating means.
In this case, the supply air flowing to the timer operating means is not only stored in the tank, but also stored in the auxiliary tank, and the pressure in both the tank and the auxiliary tank is equal to or higher than a predetermined set pressure. When this happens, the timer actuating means closes the switching valve. Therefore, the time from when the switching valve is opened until the timer actuating means closes the switching valve can be easily lengthened, and the time from when the switching valve is opened until it is closed can be adjusted more appropriately.

Hereinafter, embodiments of the air supply operating device according to the present invention will be described with reference to the drawings.
As shown in FIG. 1, the air supply operation device 1 of the present example includes an air operation device 7 that is operated by supply air A1, and a main valve (switching valve) that supplies and shuts off supply air A1 to the air operation device 7. ) 2, an opening operation valve 3 configured to open the main valve 2, and a timer operating means 4 configured to close the main valve 2 after a predetermined time has elapsed since the main valve 2 opened. .

The main valve 2 receives the supply of the control air A2 from the opening operation valve 3 to perform the opening operation, supplies the supply air A1 to the air operating device 7, and supplies the control air A2 from the timer operating means 4. In response to the closing operation, the supply air A1 to the air operating device 7 is cut off. Further, after the main valve 2 is opened, the timer operating means 4 gradually stores a part of the supply air A1 flowing from the main valve 2 to the air operating device 7 in the tank 43, and the pressure in the tank 43 is predetermined. When the pressure exceeds the set pressure, the control air A2 is supplied to the main valve 2 to close the main valve 2. Further, the opening operation valve 3 has an operation unit 31, and is configured to open the main valve 2 by supplying control air A <b> 2 to the main valve 2 in response to the operation of the operation unit 31.
This will be described in detail below.

  As shown in FIGS. 1 and 2, the air operating device 7 of this example is an air micro measuring device 7 that measures the dimension of the part 81 to be measured in the measuring object 8. The air micro measuring device 7 includes a measurement engagement portion 71 that engages with the measured portion 81, and an air outlet 721 for ejecting supply air A 1 from the measurement engagement portion 71 toward the measured portion 81. And a pressure detector 73 for detecting the pressure of the supply air A1 in the air micrometer 7.

In addition, as shown in FIG. 2, the measurement engagement portion 71 has a measurement surface 711 disposed to face the measurement target portion 81, and the air ejection port 721 is open to the measurement surface 711. In addition, a supply air path 72 through which the supply air A <b> 1 passes is formed in the measurement engagement portion 71, and the air outlet 721 is formed at the tip of the supply air path 72.
The pressure detection unit 73 in this example is a pressure gauge 73 connected to the supply air path 72. The air micrometer 7 can measure the dimension of the measurement target 81 in the measurement object 8 by monitoring the pressure change in the supply air path 72 by the pressure detection unit 73.

More specifically, the air micrometer 7 can be used when measuring the outer diameter or inner diameter of the measurement target 81 in the measurement object 8.
That is, for example, as shown in FIG. 2, when the measured portion 81 has a hole shape, the measurement engaging portion 71 is used to measure the inner diameter of the measured portion 81. It can form in the shape which has the curved measurement surface 711 arrange | positioned facing the inner peripheral side. In this case, a plurality of supply air paths 72 are formed toward the curved measurement surface 711, and the air ejection port 721 is opened in the curved measurement surface 711. Then, by detecting the pressure drop in the supply air path 72 by the pressure detection unit 73, the inner diameter of the measured portion 81 can be measured.

  For example, as shown in FIG. 3, when the measured portion 81 has a protruding shape, the measurement engaging portion 71 is used to measure the outer diameter of the measured portion 81. It can be formed in a shape having a pair of measurement surfaces 711 disposed opposite to both sides of the portion 81. In this case, the supply air path 72 is branched and formed toward each measurement surface 711, and an air outlet 721 is opened on each measurement surface 711. Then, by detecting the pressure drop in the supply air path 72 by the pressure detection unit 73, the outer diameter of the measured portion 81 can be measured.

As shown in FIG. 1, a supply air main pipe 51 through which supply air A1 flows is connected to the main valve 2, and a control air main flow through which control air A2 flows is connected to the opening operation valve 3 and the timer operating means 4. A pipe 61 is connected.
Further, the control air main pipe 61 of this example is provided with a regulator 55 for setting the pressure of the control air A2 supplied to the opening operation valve 3 and the timer operating means 4 to a predetermined pressure.

The main valve 2 and the opening operation valve 3 are connected by a first control air sub-pipe 62 through which the control air A2 flows, and the main valve 2 and the timer operating means 4 are in the second control through which the control air A2 flows. They are connected by an air sub pipe 63.
Further, the main valve 2 and the air micro measuring device 7 are connected by a supply air sub-pipe 52, and the supply air sub-pipe 52 and the timer operating means 4 are connected by a supply air take-out pipe 53.

Here, FIG. 1 shows a state in which the main valve 2 is in the closed position, the opening operation valve 3 is in the exhaust position, and the timer valve section 40 in the timer operating means 4 is in the exhaust position.
Further, in this example, the supply air A <b> 1 refers to air (air) used for supplying to the air operating device 7. Further, the control air A2 refers to air (air) used for controlling the main valve 2, the opening operation valve 3 or the timer operating means 4.

In this example, the residual air is the supply remaining in the interior of the main valve 2, the opening operation valve 3 or the timer operating means 4 and in the pipes 52, 53, 62, 63 connecting them. It means air A1 or control air A2.
Further, the same air (fresh air) can be used as the supply air A1 and the control air A2, and for example, compressed air of 0.3 to 0.5 MPa can be used.

As shown in FIG. 1, the main valve 2 has an open position (supply position) for supplying the supply air A1 to the air micrometer 7 and a closed position for blocking the supply of the supply air A1 to the airmicrometer 7. It can move to the position (exhaust position). When the main valve 2 is in the open position, the main valve 2 forms a supply path C1 for supplying the supply air A1 to the air micrometer 7. When the main valve 2 is in the closed position, the air micrometer 7 and the timer are provided. An exhaust path C2 for exhausting residual air remaining in the actuating means 4 is formed.
The main valve 2 of this example is a double valve that operates by air.

  The main valve 2 receives the supply of the control air A2 and moves the main valve 2 to the open position. The main valve 2 receives the control air A2 and opens the main valve 2 in the closed position. And a closing operation port M2 for moving to. The main valve 2 has an input port P connected to the supply air main pipe 51, an output port O connected to the air micrometer 7, and an exhaust port R opened to the atmosphere. . When the main valve 2 is in the open position, the input port P and the output port O are connected to form the supply path C1, and when the main valve 2 is in the closed position, the output port O and the exhaust port are connected. R is connected to form the exhaust path C2.

As shown in FIG. 1, the opening operation valve 3 includes a supply position for supplying control air A2 to the opening operation port M1 in the main valve 2, and residual air remaining in the opening operation port M1 in the main valve 2. It is possible to move to an exhaust position for exhausting the air. The opening operation valve 3 is moved to the supply position in response to the operation of the operation unit 31, and is configured to receive the urging force of the urging spring 32 and return to the exhaust position when the operation of the operation unit 31 is released. Has been.
The opening operation valve 3 forms a supply path C1 for supplying the control air A2 to the opening operation port M1 in the main valve 2 when the opening operation valve 3 is in the supply position. An exhaust path C2 for exhausting residual air remaining in the opening operation port M1 in the valve 2 is formed.
The opening operation valve 3 of this example is a mechanical valve that is operated by a human operation.

  The opening operation valve 3 includes an input port P connected to the control air main pipe 61, an output port O connected to the opening operation port M1 in the main valve 2, and an exhaust port R opened to the atmosphere. have. When the opening operation valve 3 is in the supply position, the input port P and the output port O are connected to form the supply path C1, and when in the exhaust position, the output port O and the exhaust port 3 are connected. A port R is connected to form the exhaust path C2.

  As shown in FIG. 1, the timer actuating means 4 includes a supply position for supplying control air A2 to the closing operation port M2 in the main valve 2, and residual air remaining in the closing operation port M2 in the main valve 2. A timer valve section 40 that can move to an exhaust position for exhausting the air, a tank 43 that stores a part of the supply air A1 that flows from the main valve 2 to the air micrometer 7, and the pressure in the tank 43 is And a moving operation unit 41 that moves the timer valve unit 40 to the supply position when the pressure exceeds a predetermined set pressure.

The timer valve unit 40 forms a supply path C1 for supplying the control air A2 to the closing operation port M2 in the main valve 2 when the timer valve unit 40 is in the supply position, and the main valve 2 when the timer valve unit 40 is in the exhaust position. An exhaust path C2 for exhausting residual air remaining in the closing operation port M2 is formed.
The timer operating means 4 of this example is a time delay valve that is operated by air.

The timer valve section 40 includes an input port P connected to the control air main pipe 61, an output port O connected to the closing operation port M2 in the main valve 2, and an exhaust port R opened to the atmosphere. have. When the timer valve unit 40 is in the supply position, the input port P and the output port O are connected to form the supply path C1, and when the timer valve unit 40 is in the exhaust position, the output port O and the exhaust port are connected. A port R is connected to form the exhaust path C2.
The timer valve unit 40 receives the pressing force of the moving operation unit 41 and moves to the supply position. When the residual air in the tank 43 and the auxiliary tank 431 is exhausted, the timer valve unit 40 applies the biasing force of the biasing spring 42. It is configured to receive and return to the exhaust position.

The timer actuating means 4 includes an auxiliary tank 431 connected to the tank 43 and a throttle valve 44 for restricting the flow rate of the supply air A1 flowing from the main valve 2 into the tank 43. The auxiliary tank 431 has a larger capacity than the tank 43, and the supply air A <b> 1 flowing from the main valve 2 to the tank 43 also flows from the tank 43 to the auxiliary tank 431. Then, when the pressure in the tank 43 and the auxiliary tank 431 becomes equal to or higher than a predetermined set pressure, the timer operating unit 4 closes the main valve 2 by moving the moving operation unit 41 in the timer operating unit 4. It is configured as follows.
The timer actuating means 4 has a check valve 45 connected in parallel with the throttle valve 44, and the residual air stored in the tank 43 and the auxiliary tank 431 is quickly supplied to the main valve 2 via the check valve 45. It comes to be exhausted from.

Next, the operation and effect of the air supply operation device 1 including the air micro measuring device 7 will be described.
As shown in FIGS. 1 and 2, the main valve 2 is in the closed position before the measurement of the dimension of the part 81 to be measured in the measurement object 8 using the air micrometer 7. Supply of supply air A1 to the measuring instrument 7 is shut off. Further, at this time, the main valve 2 is connected to the output port O and the exhaust port R to form an exhaust path C2, and the residual air remaining in the air micrometer 7 and the timer operating means 4 The air is exhausted from the exhaust port R of the main valve 2 through the pipe 52 and the supply air extraction pipe 53.

  Next, the measurement target portion 81 of the measurement object 8 is engaged with the measurement engagement portion 71 of the air micrometer 7. At this time, due to the dimensional error of the measurement target 81 in the measurement object 8, a gap is formed between the air injection port 721 opening on the measurement surface 711 of the measurement target 81 and the measurement target 81, and the air jet A state is formed in which the supply air A1 is ejected from the outlet 721.

  And after setting the measuring object 8 in the air micro measuring device 7, an operator operates the operation part 31 in the opening operation valve 3, and moves the opening operation valve 3 to a supply position. At this time, the input port P and the output port O of the opening operation valve 3 are connected to form a supply path C1, and the control air A2 flows from the control air main pipe 61 to the first control air sub pipe 62, and the first control air The control air A2 is supplied to the opening operation port M1 of the main valve 2 via the auxiliary pipe 62.

Then, the main valve 2 moves from the closed position to the open position, and the input port P and the output port O of the main valve 2 are connected to form a supply path C1. Thereby, the supply air A1 flows from the supply air main pipe 51 to the supply air sub pipe 52, and the supply air A1 is supplied to the supply air path 72 in the air micrometer 7 through the supply air sub pipe 52.
When the operation of the operation portion 31 in the opening operation valve 3 is released, the opening operation valve 3 is moved to the exhaust position by the urging force of the urging spring 32 and remains in the first control air sub-pipe 62. Residual air is exhausted from the exhaust port R of the opening operation valve 3.

  Next, the supply air A1 supplied to the supply air path 72 toward the gap formed between the air outlet 721 on the measurement surface 711 of the measurement engagement portion 71 and the measured portion 81 on the measurement object 8. A part of is ejected from the air ejection port 721. Then, the pressure drop in the supply air path 72 due to this ejection can be monitored by the pressure detection unit 73, and the dimension of the measured portion 81 can be measured.

  Next, the supply air A1 is supplied from the main valve 2 to the air micro measuring device 7 via the supply air sub-pipe 52, and a part of the supply air A1 is operated by the timer via the supply air extraction pipe 53. It flows into the tank 43 in the means 4. At this time, a part of the supply air A1 flows into the tank 43 in a state where the flow rate is throttled by the throttle valve 44. Further, the supply air A <b> 1 that has flowed into the tank 43 also flows into the auxiliary tank 431.

  When the pressure in the tank 43 and the auxiliary tank 431 reaches a predetermined set pressure, the moving operation unit 41 in the timer operating unit 4 operates, and the timer valve unit 40 in the timer operating unit 4 is moved from the exhaust position to the supply position. Move to. As a result, the input port P and the output port O of the timer valve unit 40 are connected to form the supply path C1, and the control air A2 flows from the control air main pipe 61 to the second control air sub pipe 63, and the second control air Control air A <b> 2 is supplied to the closing operation port M <b> 2 of the main valve 2 through the auxiliary pipe 63.

  Then, the main valve 2 moves from the open position to the closed position, and the output port O and the exhaust port R of the main valve 2 are connected to form an exhaust path C2. As a result, residual air remaining in the air micrometer 7 and the timer operating means 4 is exhausted from the exhaust port R of the main valve 2 via the supply air sub-pipe 52 and the supply air take-out pipe 53. Further, the residual air in the tank 43 and the auxiliary tank 431 is exhausted, and the timer valve unit 40 is moved from the supply position to the exhaust position by the urging force of the urging spring 42, and the second control air sub-pipe 63. The residual air therein is exhausted from the exhaust port R of the timer valve unit 40.

  As described above, in the air supply operation device 1, when the air micrometer 7 is not used, the main valve 2 blocks the supply of the supply air A <b> 1 to the air micrometer 7. Therefore, when the air micrometer 7 is not used, the supply air A1 is not exhausted to the outside, and wasteful consumption of the supply air A1 can be prevented.

Further, the air supply operating device 1 can appropriately set the time from opening the main valve 2 to closing it by adjusting the opening of the throttle valve 44 in the timer operating means 4. Then, the air micrometer 7 measures the object to be measured only for the time from when the supply of the supply air A1 from the main valve 2 is started until the pressure in the tank 43 and the auxiliary tank 431 reaches a predetermined set pressure. 8 can measure the dimensions of the part 81 to be measured. Thereby, the operator can operate the air micrometer 7 continuously only by operating the operation part 31 of the opening operation valve 3, and the work burden on the operator can be reduced.
Therefore, according to the air supply operation device 1, wasteful consumption of the supply air A1 can be prevented, and the work burden on the operator can be reduced.

The air circuit diagram which shows the air supply operation apparatus provided with the air micro measuring device in an Example. Explanatory drawing which shows the air micro measuring device which measures the to-be-measured part of a hole shape in an Example. Explanatory drawing which shows the air micro measuring device which measures the to-be-measured part of a protrusion shape in an Example.

Explanation of symbols

1 Air supply actuator 2 Main valve (switching valve)
DESCRIPTION OF SYMBOLS 3 Open operation valve 31 Operation part 4 Timer operation means 40 Timer valve part 41 Movement operation part 43 Tank 431 Auxiliary tank 44 Throttle valve 51 Supply air main piping 61 Control air main piping 7 Air micrometer (air operation equipment)
71 Measurement Engagement Unit 721 Air Jet 73 Pressure Detection Unit 8 Measurement Object 81 Measured Part A1 Supply Air A2 Control Air

Claims (6)

Air operated equipment,
A switching valve that performs an opening operation to supply supply air to the air operating device, and performs a closing operation to shut off supply air to the air operating device;
Timer operating means configured to close the switching valve after a predetermined time has elapsed since the switching valve opened,
The timer actuating means gradually stores a part of the supply air flowing from the switching valve to the air operating device in the tank after the switching valve is opened, and the pressure in the tank becomes equal to or higher than a predetermined set pressure. An air supply actuating device configured to supply control air to the switching valve to close the switching valve when the switch valve is closed.   2. The switching valve according to claim 1, wherein an opening operation valve for opening the switching valve is connected to the switching valve, and the opening operation valve operates the operation portion to supply control air to the switching valve. An air supply actuating device characterized in that the air supply actuating device is configured to open. In Claim 2, a supply air main pipe through which supply air flows is connected to the switching valve, and a control air main pipe through which control air flows is connected to the timer operating means and the opening operation valve. ,
When the control valve is supplied from the opening operation valve to the switching valve, the switching valve opens to supply air to the air operating device, and the timer operating means supplies the switching valve to the switching valve. An air supply actuating device configured to perform a closing operation to supply and shut off supply air to the air actuating device when supplied with control air.   The air operating device according to any one of claims 1 to 3, wherein the air operating device is an air micro measuring device that measures a dimension of the measurement target portion of the measurement object, and the air micro measurement device is associated with the measurement target portion. A measurement engagement portion to be combined, an air outlet for ejecting supply air from the measurement engagement portion toward the measurement target portion, and pressure detection for detecting the pressure of the supply air in the air micrometer And an air supply actuating device.   5. The air supply operation device according to claim 1, wherein a throttle valve for reducing a flow rate of supply air flowing into the tank is connected to the tank in the timer operation means. .   6. The air supply operating device according to claim 1, wherein an auxiliary tank having a larger capacity than the tank is connected to the tank in the timer operating means.

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