JP4119636B2 - Vacuum equipment - Google Patents

Description

[0001]
BACKGROUND OF THE INVENTION
The present invention relates to a vacuum device that generates a vacuum suction force.
[0002]
[Prior art]
In a vacuum device that generates a vacuum suction force by an ejector method (for example, the product name “CVM Convum” marketed by Myonoku Co., Ltd.), a vacuum suction port and a vacuum suction port are provided in the device body constituting the outer frame. There are provided a communication port that communicates with the exhaust 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 communication port at the communication port, the discharge port at the exhaust port, and the vacuum suction port between the injection port and the discharge port.
[0003]
By supplying compressed air from the communication port, air is blown from the jet port to the jet port, and is thereby vacuumed from the vacuum supply port.
[0004]
In addition, in a vacuum switching device (for example, trade name “MPV3” marketed by Myonori Co., Ltd.) having an electromagnetic valve that is connected to a vacuum suction port and is openable and closable with this air line, A vacuum supply port is formed at the end of the line on the outer side of the device body constituting the outer frame.
[0005]
Vacuum suction from the vacuum suction port is generated by vacuum suction from the vacuum supply port. The stop and start of vacuum suction from the vacuum suction port can be freely controlled by opening and closing the electromagnetic valve.
[0006]
By the way, in the vacuum generator and the vacuum switching device as described above, there are many portions where the structural members such as the outer frame member are common. Therefore, by replacing some components, if it can be used for both vacuum generators and vacuum switchers, the number of equipment to be provided can be reduced by half, warehouse installation space, equipment cost reduction, etc. The effect obtained is great.
[0007]
[Problems to be solved by the invention]
In view of the above facts, an object of the present invention is to provide a vacuum apparatus that can exhibit functions as a plurality of apparatuses by exchanging some components.
[0008]
[Means for Solving the Problems]
In the first aspect of the present invention, a vacuum suction port to which a vacuum suction pipe is attached from the outside, an air port through which air is sucked or blown in, and an inlet / outlet through which a nozzle kit is taken in and out are formed, Nozzle kit chamber in which the nozzle kit is detachably loaded, a detachable lid for closing the inlet / outlet, an air suction path connecting the vacuum suction port and the nozzle kit chamber, the air port and the nozzle An air flow path for connecting to the kit chamber, and when the nozzle kit is loaded, air is blown from the air port and exhausted from the inlet / outlet, and when the nozzle kit is removed and the lid is attached, It is characterized by being vacuumed from the air port.
[0009]
As a vacuum generator that generates a vacuum suction force from the vacuum suction port by blowing out an ejector type with a nozzle kit (for example, a diffuser) attached to a single vacuum device, the nozzle kit is removed from the air port. It can be used as any of the vacuum switching devices by switching the start / stop of vacuum suction. Therefore, the number of equipment can be reduced by about half, and the apparatus cost can be greatly reduced.
[0010]
In the invention according to claim 2, it communicates with the switching chamber provided with the switching member which moves by the change of the air pressure, and switches the opening and closing of the air flow path, and the air pressure supply port provided outside the switching chamber. And an air pressure supply path, and a moving force is applied to the switching member by the air pressure supplied from the air pressure supply port to freely open and close the air flow path.
[0011]
Thereby, it is not necessary to provide a driving force generating mechanism for opening and closing the air flow passage in the vacuum device, so that the vacuum device can be reduced in size and simplified.
[0012]
The invention according to claim 3 is characterized in that an air blowing path is formed in which air is blown in communication with the air suction path.
[0013]
Thereby, when performing vacuum suction from the vacuum suction port, it is possible to immediately stop vacuum suction from the vacuum suction port by blowing air from the air blowing path.
[0014]
The invention according to claim 4 is characterized in that the upstream end of the air blowing path is formed as an air blowing port outside the apparatus.
[0015]
Since the amount of air blown from the air blowing port can be adjusted, it is possible to easily adjust the value of the positive pressure generated at the vacuum suction port.
[0016]
The invention according to claim 5 is characterized in that the air port, the air pressure supply port, and the air blowing port are all provided on one of the upper, lower, left, right, front and rear sides of the outside of the apparatus.
[0017]
Thereby, piping connected for blowing air or sucking air can be collected on one side. This is particularly effective when the vacuum equipment is manifolded (multiple).
[0018]
DETAILED DESCRIPTION OF THE INVENTION
Hereinafter, embodiments will be described and embodiments of the present invention will be described.
[0019]
As shown in FIG. 1 to FIG. 7, a vacuum device 10 according to an embodiment of the present invention is a device that performs vacuum suction from a vacuum suction port provided in the device body 12, which is either a vacuum generator or a vacuum switcher. It can also be used as a device.
[0020]
The device body 12 includes a vacuum suction port 14 to which a vacuum suction pipe 16 is attached from the outside, and an air port 18 through which air is sucked or air is blown. Further, the device main body 12 is provided with a diffuser chamber 22 into which the diffuser 20 is detachably loaded. The diffuser chamber 22 is formed with an inlet / outlet 24 through which the diffuser 20 is taken in and out, and the inlet / outlet 24 can be closed by a removable plug 26 (see FIGS. 5 to 7).
[0021]
Further, the apparatus main body 12 is formed with an air suction path T that connects the vacuum suction port 14 and the diffuser chamber 22 and an air flow path S that connects the air port 18 and the diffuser chamber 22. The device main body 12 is provided with a switching valve 32 that switches between opening and closing the air flow path S and a switching chamber 30 that houses the switching valve 32.
[0022]
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 a pneumatic supply port provided on the lower side of the device body 12. 44. A supply line Q for supplying compressed air at a predetermined pressure or higher is connected to the air pressure supply port.
[0023]
The pilot air supply line P is provided with an electromagnetic valve 42 that is controlled to be opened and closed by the control unit 40, and the opening and closing of the switching valve 32 is controlled by opening and closing the electromagnetic valve 42. The opening / closing control of the switching valve 32 will be described in some detail below.
[0024]
The switching valve 32 is provided on the lower end side of the switching member 34 that moves according to the change of air pressure to switch the opening and closing of the air flow path S, and always urges the switching member 34 from below to above. A compression coil spring 36.
[0025]
When the electromagnetic 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 urged upward by the compression coil spring 36. As a result, the switching valve 32 is closed (see FIG. 1).
[0026]
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 urging force of the compression coil spring 36. As a result, the switching valve 32 is opened (see FIG. 2).
[0027]
When the vacuum device 10 is used as a vacuum generator, first, the diffuser 20 is attached to the device body 12. When the diffuser 20 is mounted in the diffuser chamber 22, the injection port communicates with the air flow path S, the injection port communicates with the inlet / outlet 24, and the suction port communicates with the air suction path T. It is attached to.
[0028]
After mounting, a silencer 38 is fitted in the entrance / exit 24 for the purpose of silencing. The silencer 38 is manufactured such that an exhaust path 39 is formed between the silencer 38 and the device main body 12 in a state where the silencer 38 is fitted into the doorway 24.
[0029]
Further, a compressed air supply line W provided outside is connected to the air port 18. When compressed air is supplied from the air port 18 in this state, the air is blown out from the diffuser 20 (air line LS) and exhausted to the outside via the exhaust path 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).
[0030]
In order to use the vacuum device 10 as a vacuum switch, the silencer 38 is removed, the diffuser 20 is extracted, and the inlet / outlet 24 is closed with the plug 26. Then, a vacuum supply line V provided outside is connected to the air port 18 and vacuum suction is performed from the air port 18.
[0031]
In this state, since the air port 18 and the vacuum suction port 14 communicate with each other, vacuum suction from the air port 18 causes the air suction path T to have a negative pressure, thereby forming the air line LT2, and the vacuum suction port. The vacuum suction force from 14 is generated (see FIG. 6).
[0032]
Further, the device main body 12 is provided with a vacuum breaking air supply line U through which air is blown in communication with the air suction path T. A vacuum break air supply port 54 is formed at the upstream end of the vacuum break air supply line U, and a compressed air supply line Y is connected to the vacuum break air supply port 54. The vacuum break air supply line U is sequentially provided with an electromagnetic valve 52 that is controlled to be opened and closed by the controller 50 and a needle valve 56 that adjusts the air flow rate from the upstream side.
[0033]
The vacuum suction from the vacuum suction port 14 can be stopped immediately by supplying the compressed air from the vacuum break air supply port 54 while the vacuum suction port 14 is vacuum-sucked. Thus, by providing the supply port for supplying the vacuum breaking air individually, the air supply pressure at the time of breaking the vacuum can be easily set. For example, when the work to be adsorbed (not shown) is small, the work blows off when the air supply pressure is set to the normal 0.5 MPa. In this embodiment, the air supply pressure is arbitrarily lower than 0.5 MPa. It is possible to prevent the workpiece from being blown away by setting the pressure to the above.
[0034]
Furthermore, in this embodiment, the air port 18, the air pressure supply port 44, and the vacuum break air supply port 54 are all formed on the lower surface side of the device main body 12. Accordingly, the pipes that supply the compressed air can be gathered downward. As shown in FIG. 10, this is particularly effective when the vacuum device 10 is manifolded (multiple connection), 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.
[0035]
8 and 9, a branch pipe 60 having an on-off valve (solenoid valve) 62 is connected to a line connecting the air port 18 and the switching valve 32. The branch pipe 60 is connected to the pilot air. An on-off valve 72 may be provided between the end of the branch pipe 60 connected to the supply line P and the air pressure supply port 44.
[0036]
Accordingly, when used as a vacuum generator, as shown in FIG. 8, by opening the on-off valve 62 and closing the on-off valve 72, the operating pressure is supplied to the control unit 40 by the compressed air supply line W. Since it can supply, it is not necessary to connect the supply line Q to the air pressure supply port 44. When used as a vacuum switch, as shown in FIG. 9, it can be used in the same manner as the vacuum switch shown in FIG. 2 by closing the on-off valve 62 and opening the on-off valve 72. it can.
[0037]
As mentioned above, although one Embodiment of this invention was mentioned and demonstrated, it cannot be overemphasized that the scope of rights of this invention is not restricted to this embodiment.
[0038]
【The invention's effect】
Since the present invention has the above configuration, the following effects can be obtained.
[0039]
According to the first aspect of the present invention, the nozzle kit is removed as a vacuum generator that generates a vacuum suction force from the vacuum suction port by blowing out a single vacuum device with an ejector type with the nozzle kit attached. Thus, it can be used as either a vacuum switch by switching the start / stop of vacuum suction from the air port. Therefore, the number of equipment can be reduced by about half, and the apparatus cost can be greatly reduced.
[0040]
According to the second aspect of the present invention, it is not necessary to provide a mechanism for generating a driving force for opening and closing the air flow path in the vacuum device, so that the vacuum device can be reduced in size and simplified.
[0041]
According to the third aspect of the present invention, when vacuum suction is performed from the vacuum suction port, the vacuum suction from the vacuum suction port can be immediately stopped by blowing air from the air blowing path.
[0042]
According to the fourth aspect of the present invention, the amount of air blown from the air blowing port can be adjusted, so that the value of the positive pressure generated at the vacuum suction port can be easily adjusted.
[0043]
According to the fifth aspect of the present invention, pipes connected for blowing air or sucking air can be collected on one side, and the pipe length can be reduced. This is particularly effective when the vacuum equipment is manifolded (multiple).
[Brief description of the drawings]
FIG. 1 is a cross-sectional view showing a state where a vacuum apparatus according to an embodiment of the present invention is used as a vacuum generator and no vacuum is generated.
FIG. 2 is a cross-sectional view showing a state where 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 a vacuum device according to an embodiment of the present invention.
FIG. 4 is a partially enlarged view of FIG. 2;
FIG. 5 is a cross-sectional view showing a state where 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. 6. FIG.
FIG. 8 is a sectional view showing a modified example of the vacuum device according to the embodiment of the present invention and used as a vacuum generator.
FIG. 9 is a sectional view showing a modified example of the vacuum device according to the embodiment of the present invention and used as a vacuum switch.
FIG. 10 is a side view showing an example in which the vacuum equipment according to the embodiment of the present invention is made in a multiple number.
[Explanation of symbols]
10 Vacuum Equipment 14 Vacuum Suction Port 18 Air Port 20 Diffuser (Nozzle Kit)
22 Diffuser room (nozzle kit room)
24 Door 26 Entrance plug (lid)
30 switching chamber 32 switching valve 34 switching member 44 air pressure supply port 54 vacuum break air supply port (air blowing port)
T Air suction path S Air flow path P Pilot air supply line (pneumatic pressure supply path)
U Vacuum breaking air supply line (air blowing path)

Claims (5)

A vacuum suction port to which a vacuum suction pipe is attached from the outside;
An air inlet through which air is aspirated or blown; and
A nozzle kit chamber in which an inlet / outlet through which the nozzle kit is inserted and removed is formed, and the nozzle kit is detachably loaded;
A detachable lid for closing the doorway;
An air suction path connecting the vacuum suction port and the nozzle kit chamber;
An air flow path connecting the air port and the nozzle kit chamber,
In the state where the nozzle kit is loaded, air is blown from the air port and exhausted from the inlet / outlet port, and when the nozzle kit is removed and the lid is attached, vacuum is sucked from the air port. . A switching chamber provided with a switching member that is moved by a change in air pressure to switch between opening and closing of the air flow path;
An air pressure supply passage that communicates with the switching chamber and an air pressure supply port provided on the outside, and opens and closes the air flow path by applying a moving force to the switching member by the air pressure supplied from the air pressure supply port. The vacuum apparatus according to claim 1, which can be switched freely.   The vacuum apparatus according to claim 1, wherein an air blowing path is formed through which air is blown in communication with the air suction path.   The vacuum apparatus according to claim 3, wherein an upstream end of the air blowing path is formed as an air blowing port outside the apparatus. The vacuum apparatus according to claim 4, wherein the air port, the air pressure supply port, and the air blowing port are all provided on one of the upper, lower, left, and right front and rear sides of the outside of the apparatus.

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