JP2003120598A - Vacuum equipment - Google Patents

Abstract

PROBLEM TO BE SOLVED: To provide vacuum equipment capable of exhibiting a function as two or more pieces of equipment by replacing a certain component. SOLUTION: This vacuum equipment 10 comprises: an evacuation port 14; an air port 18 for sucking or blowing air; a diffuser chamber 22 having an inlet and outlet port 24 for taking in and out a diffuser 20, on which the diffuser 20 is attachably and detachably mounted; an attachable and detachable plug for blocking the inlet and outlet port 24; an air suction passage T for connecting the vacuum suction port 14 to the diffuser chamber 22; and an air passage S for connecting the air port 18 to the diffuser chamber 22. According to such a structure, one piece of vacuum equipment 10 is used as both an ejector type vacuum generator for evacuation through the evacuation port 14 by attaching the diffuser 20 and a vacuum switch for switching the start/stop of evacuation by removing the diffuser 20.

Description

Detailed Description of the Invention

[0001]

TECHNICAL FIELD The present invention relates to a vacuum device for generating a vacuum suction force.

[0002]

2. Description of the Related Art In a vacuum device that generates a vacuum suction force by an ejector method (for example, a product name "CVM Conbum" marketed by Myotoku Co., Ltd.), a vacuum suction port is provided in a device body forming an outer frame. And a communication port that communicates with the vacuum suction port,
And an exhaust port through which air is exhausted when compressed air is supplied from the communication port. In addition, the device body is provided with an ejector-type nozzle portion that communicates with the injection port, the exhaust port, and the vacuum suction port between the injection port and the ejection port.

By sending compressed air from the communication port, the air is blown from the injection port to the ejection port, whereby the vacuum is suctioned from the vacuum supply port.

Further, an air line for vacuum suction communicates with the vacuum suction port, and a vacuum switching device having a solenoid valve that can be opened and closed (for example, a product name "MPV3" commercially available from Myotoku Co., Ltd.) ), A vacuum supply port is formed at the end of the line outside the main body of the device that constitutes the outer frame.

By vacuum suction from the vacuum supply port,
A vacuum suction force is generated from the vacuum suction port. Then, by opening and closing the electromagnetic valve, it is possible to freely control stop and start of vacuum suction from the vacuum suction port.

By the way, in the vacuum generator and the vacuum switching device as described above, there are many parts in which the constituent members such as the outer frame member are common. Therefore, by replacing some of the components, if it can be used for both the vacuum generator and the vacuum switch, the number of equipment to be equipped can be reduced by about half, the installation space of the warehouse, the reduction of equipment cost, etc. The effect obtained is large.

[0007]

SUMMARY OF THE INVENTION In consideration of the above facts, the present invention is to provide a vacuum device capable of exhibiting a function as a plurality of devices by exchanging a part of components. It is an issue.

[0008]

According to a first aspect of the invention, a vacuum suction port to which a pipe for vacuum suction is attached from the outside, an air port through which air is sucked or blown, and a nozzle kit. A nozzle kit chamber in which the nozzle kit is detachably loaded, an attachable / detachable lid that closes the inlet / outlet, and air suction that connects the vacuum suction port and the nozzle kit chamber. A passage, and an air flow path connecting the air port and the nozzle kit chamber, and in a state where the nozzle kit is loaded, air is blown from the air port and exhausted from the inlet and outlet, When the lid is detached and attached, vacuum suction is performed from the air port.

Thus, the nozzle kit is detached as a vacuum generator for generating a vacuum suction force from the vacuum suction port by attaching a nozzle kit (for example, a diffuser) to one vacuum device and blowing it out by an ejector type. It can be used for any of the following as a vacuum switching device by switching start / stop of vacuum suction from the air port. Therefore, the number of equipments can be reduced to about half, and the device cost can be significantly reduced.

According to the second aspect of the present invention, there is provided a switching chamber provided with a switching member which moves by a change in air pressure to switch between opening and closing of the air passage, and the switching chamber and an air pressure supply port provided outside. An air pressure supply path communicating with
The air pressure supplied from the air pressure supply port applies a moving force to the switching member to freely switch the opening and closing of the air flow path.

As a result, it is not necessary to provide a mechanism for generating a driving force for opening and closing the air flow path in the vacuum equipment, so that the vacuum equipment can be downsized and simplified.

According to a third aspect of the present invention, an air blowing passage is formed which communicates with the air suction passage and through which air is blown.

Thus, when vacuum suction is performed from the vacuum suction port, it is possible to immediately stop the vacuum suction from the vacuum suction port by blowing air from the air blowing passage.

According to a fourth aspect of the present invention, the upstream end of the air blowing passage is formed as an air blowing opening outside the device.

Since the amount of air blown from the air blowing port can be adjusted, the value of the positive pressure generated at the vacuum suction port can be easily adjusted.

According to a fifth aspect of the invention, the air port,
It is characterized in that the air pressure supply port and the air blowing port are all provided on one side of the outside, top, bottom, left and right sides of the apparatus.

With this, the pipes connected for blowing air or sucking air can be gathered on one side. This is particularly effective when the vacuum equipment is manifolded (multi-connected).

[0018]

BEST MODE FOR CARRYING OUT THE INVENTION Embodiments of the present invention will be described below with reference to embodiments.

As shown in FIGS. 1 to 7, a vacuum device 10 according to an embodiment of the present invention is a device for vacuum suction from a vacuum suction port provided in a device main body 12, a vacuum generator and a vacuum switch. It is a device that can be used as any of the vessels.

The device body 12 is provided with a vacuum suction port 14 to which a pipe 16 for vacuum suction is attached from the outside, and an air port 18 through which air is sucked or air is blown. Further, the device body 12 is provided with a diffuser chamber 22 in which the diffuser 20 is detachably mounted. The diffuser chamber 22 is formed with an inlet / outlet 24 through which the diffuser 20 is inserted / removed, and the inlet / outlet 24 can be closed by a removable plug 26 (see FIGS. 5 to 7).

The device body 12 also has a vacuum suction port 14
And an air suction passage T connecting the diffuser chamber 22 and an air flow passage S connecting the air port 18 and the diffuser chamber 22.
And are formed. Then, in the device body 12, a switching valve 32 that switches between opening and closing of the air flow path S, and a switching valve 32.
And a switching chamber 30 accommodating therein.

A pilot air supply line P, to which positive pressure air is supplied, is connected to the upper end of the switching chamber 30, and the downstream end of the pilot air supply line P is provided below the device body 12. It communicates with the air pressure supply port 44. A supply line Q that supplies compressed air at a predetermined pressure or higher is connected to the air pressure supply port.

The pilot air supply line P is provided with an electromagnetic valve 42 whose opening and closing is controlled by the controller 40, and the opening and closing of the electromagnetic valve 42 controls the opening and closing of the switching valve 32. The opening / closing control of the switching valve 32 will be described in some detail below.

The switching valve 32 is provided on the lower end side of the switching member 34 and the switching member 34 for switching the opening / closing of the air flow path S by moving according to the change of the air pressure, and the switching member 34 is always attached from the lower side to the upper side. A compression coil spring 36 that is biased,
Is equipped with.

When the solenoid valve 42 is closed, air is not supplied to the switching chamber 30 from the pilot air supply line P, and the switching member 34 receives only the force biased upward by the compression coil spring 36. As a result, the switching valve 3
2 is in a closed state (see FIG. 1).

When the solenoid valve 42 is opened and air of a predetermined pressure or more is supplied from the pilot air supply line P, the switching member 34 is pressed from above and moves downward against the biasing force of the compression coil spring 36. As a result, the switching valve 32 is opened (see FIG. 2).

When the vacuum device 10 is used as a vacuum generator, the diffuser 20 is first attached to the device body 12. When the diffuser 20 is mounted in the diffuser chamber 22, the injection port communicates with the side of the air flow path S, the ejection port communicates with the side of the port 24, and the suction port communicates with the side of the air suction passage T. Be attached to.

After mounting, the silencer 38 is fitted in the entrance 24 for the purpose of noise reduction. The silencer 38 is manufactured so that an exhaust passage 39 is formed between the silencer 38 and the device body 12 when fitted in the inlet / outlet 24.

Further, an externally provided compressed air supply line W is connected to the air port 18. When compressed air is supplied from the air port 18 in this state, the air is diffused by the diffuser 2.
It is blown out from 0 (air line LS) and is exhausted to the outside through the exhaust passage 39 (see FIGS. 2 and 4). As a result, air is sucked from the suction port of the diffuser 20 by the ejector method and discharged from the exhaust passage 39, the air suction passage T becomes negative pressure, the air line LT1 is formed, and the vacuum suction force is generated at the vacuum suction port 14. Occurs (see FIG. 2).

To use the vacuum device 10 as a vacuum switching device, the silencer 38 is removed, the diffuser 20 is withdrawn, and the inlet / outlet port 24 is closed with the plug 26. Then, the vacuum supply line V provided outside is connected to the air port 18, and vacuum suction is performed from the air port 18.

In this state, the air port 18 and the vacuum suction port 1
4 is in communication with each other, vacuum suction from the air port 18 creates a negative pressure in the air suction path T to form the air line LT2, and a vacuum suction force from the vacuum suction port 14 is generated (FIG. 6).

Further, the equipment main body 12 is provided with a vacuum breaking air supply line U which communicates with the air suction passage T and into which air is blown. A vacuum breaking air supply port 54 is formed at the upstream end of the vacuum breaking air supply line U, and a compressed air supply line Y is connected to the vacuum breaking air supply port 54. Further, in the vacuum breaking air supply line U, an electromagnetic valve 52 whose opening and closing is controlled by the control unit 50,
A needle valve 56 for adjusting the flow rate of air is sequentially provided from the upstream side.

By supplying compressed air from the vacuum breaking air supply port 54 while the vacuum suction port 14 is sucking vacuum, the vacuum suction from the vacuum suction port 14 can be immediately stopped. In this way, by individually providing the supply ports for supplying the vacuum breaking air, the air supply pressure at the time of breaking the vacuum can be easily set. For example, when the adsorbed work (not shown) is small, if the air supply pressure is set to the normal 0.5 MPa, the work is blown away. However, in the present embodiment, the air supply pressure is less than 0.5 MPa. It is possible to set the pressure of to prevent the work from being blown off.

Further, in this embodiment, the air port 18, the air pressure supply port 44, and the vacuum breaking air supply port 54 are all formed on the lower surface side of the device body 12. Therefore, the pipes for feeding the compressed air can be integrated on the lower side.
This is particularly effective when the vacuum device 10 is manifolded (multi-connected) as shown in FIG. 10, and various structures such as simplification of the structure on the connection end side of the pipe, reduction of the pipe length, etc. The effect of can be produced.

As shown in FIGS. 8 and 9, the air port 1
A branch pipe 60 having an on-off valve (solenoid valve) 62 is connected to a line connecting the switch 8 and the switching valve 32.
0 may be connected to the pilot air supply line P, and an open / close valve 72 may be provided between the end of the connected branch pipe 60 and the air pressure supply port 44.

Thus, when used as a vacuum generator, as shown in FIG. 8, the on-off valve 62 is opened and the on-off valve 72 is opened.
Since the operating pressure can be supplied to the control unit 40 by the compressed air supply line W by closing the, the supply line Q does not have to be connected to the air pressure supply port 44.
When used as a vacuum switch, it can be used in the same manner as the vacuum switch shown in FIG. 2 by closing the open / close valve 62 and opening the open / close valve 72 as shown in FIG. it can.

Although one embodiment of the present invention has been described above, it goes without saying that the scope of rights of the present invention is not limited to this embodiment.

[0038]

Since the present invention has the above-mentioned structure, the following effects can be obtained.

According to the first aspect of the present invention, a nozzle is used as a vacuum generator for generating a vacuum suction force from a vacuum suction port by ejecting one vacuum device with a nozzle kit and ejecting it by an ejector type. It can be used in any of the following as a vacuum switching device by removing the kit and switching start / stop of vacuum suction from the air port. Therefore, the number of equipments can be reduced to about half, and the device cost can be significantly reduced.

According to the second aspect of the present invention, since it is not necessary to provide a driving force generating mechanism for opening and closing the air flow path in the vacuum equipment, the vacuum equipment can be downsized and simplified.

According to the third aspect of the present invention, when vacuum suction is performed from the vacuum suction port, it is possible to immediately stop the vacuum suction from the vacuum suction port by blowing air from the air blowing path.

According to the invention as set forth in claim 4, since the amount of air blown from the air blow-in port can be adjusted,
Thereby, the value of the positive pressure generated at the vacuum suction port can be easily adjusted.

According to the fifth aspect of the invention, the pipes connected for blowing air or sucking air can be gathered on one side, and the length of the pipe can be reduced. This is particularly effective when the vacuum equipment is manifolded (multi-connected).

[Brief description of drawings]

FIG. 1 is a cross-sectional view showing a state in which a vacuum device according to an embodiment of the present invention is used as a vacuum generator and a vacuum is not generated.

FIG. 2 is a cross-sectional view showing a state in which a vacuum is generated when the vacuum device according to the embodiment of the present invention is used as a vacuum generator.

FIG. 3 is a side view of the vacuum device according to the embodiment of the present invention.

FIG. 4 is a partially enlarged view of FIG.

FIG. 5 is a cross-sectional view showing a state in which a vacuum is not generated when the vacuum device according to the embodiment of the present invention is used as a vacuum switch.

FIG. 6 is a cross-sectional view showing a state in which a vacuum is generated when the vacuum device according to the embodiment of the present invention is used as a vacuum switch.

7 is a partially enlarged view of FIG.

FIG. 8 is a cross-sectional view showing a modified example of the vacuum device according to the embodiment of the present invention, which is used as a vacuum generator.

FIG. 9 is a cross-sectional view showing a modified example of the vacuum device according to the embodiment of the present invention, which is used as a vacuum switching device.

FIG. 10 is a side view showing an example in which multiple vacuum devices according to an embodiment of the present invention are connected.

[Explanation of symbols]

10 Vacuum equipment 14 Vacuum suction port 18 air vent 20 diffuser (nozzle kit) 22 Diffuser chamber (nozzle kit chamber) 24 Doorway 26 Plug (lid) 30 switching room 32 switching valve 34 Switching member 44 Air pressure supply port 54 Vacuum break air supply port (air injection port) T air suction path S air flow path P Pilot air supply line (air pressure supply path) U Vacuum breaking air supply line (air blowing path)

   ─────────────────────────────────────────────────── ─── Continued front page    (72) Inventor Issei Suzuki             3 33-3 Yaguchi, Ota-ku, Tokyo Stock market             Company (72) Inventor Hirosuke Yamaguchi             3 33-3 Yaguchi, Ota-ku, Tokyo Stock market             Company F-term (reference) 3H079 AA18 AA23 BB01 CC19 CC21                       DD02 DD03 DD08 DD23 DD24                       DD42 DD52

Claims (5)

[Claims] 1. A vacuum suction port to which a pipe for vacuum suction is attached from the outside, an air port through which air is sucked or blown, and an inlet and outlet through which a nozzle kit is inserted and removed are formed. A nozzle kit chamber that is detachably loaded, a detachable lid that closes the inlet and outlet, an air suction path that connects the vacuum suction port and the nozzle kit chamber, the air port and the nozzle kit chamber. An air flow path to be connected, and air is blown from the air port and exhausted from the inlet and outlet in a state where the nozzle kit is loaded, and a vacuum is generated from the air port when the nozzle kit is removed and the lid is attached. Vacuum equipment characterized by being sucked. 2. A switching chamber provided with a switching member that moves according to a change in air pressure to switch between opening and closing of the air flow passage, and an air pressure supply passage communicating with the switching chamber and an air pressure supply port provided outside. The vacuum device according to claim 1, further comprising: a switching force that applies a moving force to the switching member by the air pressure supplied from the air pressure supply port to freely switch the opening and closing of the air flow path. 3. The vacuum device according to claim 1, wherein an air blowing passage is formed which communicates with the air suction passage and through which air is blown. 4. The vacuum device according to claim 3, wherein the upstream end of the air blowing passage is formed as an air blowing opening outside the device. 5. The air port, the air pressure supply port, and
The air blow ports are all provided on one side of the outside, top, bottom, left, and right front and rear sides of the device.
The vacuum device according to claim 4.