JPH1128687A - Adsorptive element and article-adsorptive equipment - Google Patents

Abstract

PROBLEM TO BE SOLVED: To provide an adsorptive element and the article-adsorptive equipment capable of positively sucking and retaining an article without deteriorating the pressure reduction operation of the pressure reduction means of other adsorptive part even if part of an adsorptive part has impossibility of adsorption. SOLUTION: An adsorptive member 6 abutted to an article face is communicated with pressure reduction means 8 through an operation chamber 53. The operation chamber 53 is movably provided with a valve element 73 selectively closing a first valve hole 71 and a second valve hole 72. The valve element 73 is energized to block the flow of outside air by corresponding to the second valve hole 72 of the operation chamber 53 by means of elastic bodies 64 under normal operation. When the entire face of the adsorptive member 6 is abutted to an article (a) face, the valve element 73 is operated to provide the valve holes of the operation chamber 53 with a flow state. When only part of the face of the adsorptive member 6 is abutted to the article face, the valve element 73 is operated to block the flow of the outside air by corresponding to the first valve hole 71 of the operation chamber 53.

Description

DETAILED DESCRIPTION OF THE INVENTION

[0001]

BACKGROUND OF THE INVENTION 1. Field of the Invention The present invention relates to suction and holding of an article, and it is possible to selectively operate a depressurized state and a non-depressurized state in accordance with a contact state of an adsorption member to the article. The present invention relates to an article suction device.

[0002]

2. Description of the Related Art A flat surface such as a sheet glass, a metal plate, or a wooden finished plate, a hook of a handling device for lifting and moving laterally, an engaging claw, and the like are applied. For items that cannot be processed and have a flat part on the top surface, the handling process is performed by adsorbing a suction tool, usually called an octopus, to the flat part of the article and fixing it to that part. ing.

[0003] If the article is large or long,
When a plurality of suction tools are required for the handling, FIG.
As shown in (1), a frame 1 is formed in accordance with the shape of the article a, and a predetermined number of suction tools 2 are arranged and mounted on the frame 1, and all of them are integrally operated. Like that.

Therefore, in the suction device having a plurality of suction tools, each suction tool apparently forms one large suction surface. Therefore, even if each suction tool has a small suction force, the suction device has a small suction force. By increasing the number of attachments and expanding the attachment range, there is an advantage that extremely large articles to be processed can be handled.

In addition, this suction device includes an opening / closing valve 4 such as a solenoid valve in a suction path 31 between the suction tool 2 and the suction pump 3.
When the suction pad 21 attached to the tip of the suction tool 2 is applied to the surface of the article a, the open / close valve 4 is opened to perform suction.

Therefore, in this suction device, the shape of the surface to be suctioned of the article a and the mounting range of the suction tool 2 correspond to each other, and all the suction tools 2 are arranged to be suctioned to the surface to be suctioned. It is important that if there is a suction device 2 that does not adsorb on the surface to be adsorbed, air is sucked from the suction device 2, so that the adsorption device loses its adsorption capability.

Therefore, in the conventional suction apparatus, the apparatus and the article a are in a dedicated relationship, and only the article a having a certain shape can be processed.
For example, a portion protruding from a position where the suction butt 21 hits,
An article in which there is a concave portion or in which the suction butt 21 protrudes from the outer peripheral edge of the article cannot be handled. And other various problems.

[0008]

SUMMARY OF THE INVENTION The present invention has been made in order to solve the above-mentioned problems, and has an adsorbing member in contact with an article surface and a pressure reducing means communicating with each other via a working chamber. The valve body which selectively closes the first valve hole and the second valve hole is movably provided, and the valve body is normally provided with an elastic machine to correspond to the second valve hole of the working chamber to allow the outside air to flow. When the entire surface of the suction member comes into contact with the surface of the article, the valve body is operated to make both valve holes of the working chamber in a flowing state, and only a part of the surface of the suction member is used as an article. When contacting the surface, the valve body is operated to correspond to the first valve hole of the working chamber so as to block the flow of the outside air. An adsorption element that can surely suck and hold an article without reducing the decompression operation of the decompression means of the adsorption section. And its object is to provide a preparative and articles adsorber.

[0009]

Means of the present invention for achieving the above object are to provide a connecting nozzle at an upper portion of a main body and a sucking member at a lower portion, so that a connection between a cup of the sucking member and the connecting nozzle is provided. An air suction path, an upper space chamber and a lower space chamber are formed in the suction path, an upper valve port and a lower valve port are formed in the upper space chamber, and a valve is provided therebetween,
This valve closes the lower valve port when the adjustment pipe of the suction member is in the most extended state, and forms a sub-ventilation path between the upper gap chamber and the lower gap chamber to form a sub-vent passage. The structure of an adsorption element in which a free valve is inserted into the valve, and a sub-valve port is formed on the upper side of the valve to allow the free valve to close by the air flow when air rises at a certain speed or more in the path. It is in.

Also, a main body, a decompression means provided on the main body, one or a plurality of working chambers connected to the decompression means, and the decompression means provided on one side of the working chamber. A first valve hole, a second valve hole provided to be open to the atmosphere on the other side of the first valve hole, and the first and second valve holes movably provided in the working chamber. Correspondingly, a valve body for closing these valve holes, a hollow mounting body communicating the air flow passage with the second valve hole provided to be extendable and contractible to the main body, and provided at an outer end of the mounting body An adsorbing member that abuts against the article surface, a linking body having one end connected to the valve body through the second valve hole, and the other end locked to the adsorbing member or the mounting body; At any time provided on the member or the mounting body, the linking body is tensioned to close the second valve hole by the valve body. Machine, a sub-operating chamber communicating the working chamber and the air flow path of the mounting body through a sub-valve provided in the main body, and the sub-working provided in the sub-working chamber to selectively close the sub-valve. And an auxiliary valve element for opening the article.

The main body, the decompression means provided on the main body, one or a plurality of working chambers connected to the decompression means, and the decompression means provided on one side of the working chamber. A first valve hole, a second valve hole provided to be open to the atmosphere on the other side of the first valve hole, and the first and second valve holes movably provided in the working chamber. Correspondingly, one end was connected to the valve body closing these valve holes and the valve body through the second valve hole, and the other end was connected to an article pushing body provided on the article suction side. A linking member, and a resilient device which is provided on the linking member and which always tightens the linking member to close the second valve hole by the valve body, and is in contact with an article surface provided on a peripheral portion of the article pushing body. And a suction member for preventing the outside air from flowing into the second valve hole when the suction device is operated.

[0012]

DETAILED DESCRIPTION OF THE PREFERRED EMBODIMENTS Next, an embodiment of a suction element and an article suction device according to the present invention will be described with reference to the drawings.

In FIGS. 1 to 10, B denotes an article suction device (suction element) for sucking and holding an article a having at least one upper surface having a smooth surface.

1 to 5 show a first embodiment of the present invention, in which a main body 5, a pressure reducing means 8, a working chamber (upper space chamber) 53, and a first valve hole (upper valve port) are shown. ) 71,
Second valve hole (lower valve port) 72, valve element (valve) 73, mounting body (adjusting pipe) 62, suction member 6, linking body (tensile member) 74, and elastic machine (coil spring) 64 And a sub-operating chamber (sub-ventilation path) 76 and a sub-valve (free valve) 77.

Of the above, the main body 5 is, for example, as shown in FIG.
Frame 11 that can move up and down and move left and right and back and forth
Are supported at predetermined intervals. For example, the predetermined moving motion is applied to an article a mounted on the mounting table 12 such as a table or a conveyor. There may be only one main body 5 on the frame 11.

The aforementioned decompression means 8 is provided so as to be connected to the main body 5 and applies a suction force to the suction chamber 15 via the suction member 6 described later. The vacuum pump 8a, the open / close valve 8b, and the piping 8c and the like.
The suction force is applied to 5.

The above-mentioned working chamber 53 is shown in FIGS.
As shown in FIG. 5, the end of the pipe 8 c is connected to a suction hole (connection nozzle) 51 of the main body 5. The decompression means 8 applies a decompression force inside, and the main body 5 may be a single body.

The first valve hole 71 is provided on one side of the working chamber 53, that is, on the upper wall, and is disposed so as to be connected to the pressure reducing means 8. Is provided.

The second valve hole 72 is provided on the other side of the first valve hole 71, that is, on the lower side wall of the working chamber 53 so as to be open to the atmosphere, and a valve seat 72a is provided on a peripheral portion thereof. Have been.

The valve body 73 is movably provided in the working chamber 53 so that the valve seats 71 of the first and second valve holes 71 and 72 are provided.
a, 72a selectively corresponding to these valve holes 71, 72.
Close and open.

The above-mentioned mounting member 62 is partitioned by a partition member 52 in the main body 5 and is provided so as to be expandable and contractible in a substantially airtight state with respect to a housing chamber (lower space chamber) 54 communicated with a vent hole 55. Two valve holes 72 and their air passages 62a
It is formed in an annular hollow shape,
A locking claw 63 is attached to the upper end to prevent the attachment body 62 from falling out of the storage chamber 54 in the main body 5.

The above-mentioned suction member 6 is provided at the outer end (lower end) of the mounting body 62 and comes into close contact with the surface of the article a, and is a cup-shaped cover in which a predetermined suction chamber 15 is formed. 6
1 is fixed to the end of the attachment body 62, and a suction pad 65 made of rubber or the like and having good adhesion to the surface of the article a is attached to the lower peripheral edge of the cover body 61.

The above-mentioned linking body 74 has one end connected to the 73 valve body via the inside of the second valve hole 72, and the other end locking member 75 can be freely connected to and separated from the suction member 6 or the mounting body 62. Since the connecting member 74 is tensioned, the valve element 73 is pulled, and the valve element 74 is attached to the valve seat 72 a of the second valve hole 72. The contact between the adsorbing member 6 and the pressure reducing means 8 is interrupted.

In particular, the linking member 74 is provided in the article suction device B
When there is no load, that is, when the mounting body (adjusting tube) 62 in which no pressing force acts between the main body 5 and the suction member 6 is apparently in the most extended state, the valve body 73 is Is pressed against the second valve hole 72 to close the second valve hole 72, and the length thereof is adjusted.

As shown in FIG. 4 (a), when a pressing force acts on the main body 5 to shorten the mounting body 62, the valve body 73 is in a free state and can be freely moved up and down. As a result, the inflow of air from the second valve hole 72 becomes possible.

The linking member 74 may be made of, for example, a steel wire which does not expand and contract itself. However, it is preferable that the linking member 74 be made of a natural or artificial fiber having a predetermined diameter, such as a synthetic resin wire such as a thread or a fiber. It is formed by members,
When the mounting body 74 contracts, the air flow path 62a and the suction chamber 1
5. The slack portion can be present in the working chamber 53 so as not to be in the way.

The above-mentioned spring 64 is provided on the suction member 6 or the mounting body 62, and always closes the linking body 74 to close the second valve hole 72 by the valve body 73. It uses a coil spring to cover,
The suction device B performs a buffering action when the suction member 6 descends and the suction member 6 comes into contact with the surface of the article a, and absorbs an excessive drop amount of the suction device B.

For this reason, it is preferable that the elasticity of the elastic body 64 using the coil spring has such a softness that it does not receive the suction force of the pressure reducing means 8.

The sub-operation chamber 76 is provided in the main body 5 and communicates the operation chamber 53 and the air flow passage 62a of the mounting body 62 through the sub-valve hole 78.

The sub-valve element 77 is provided in the sub-acting chamber 76 to selectively close and open the sub-valve hole 78. When suction is performed, a decrease in the ability to hold the article a due to the intrusion of air from the periphery of the suction pad 65 or from the insertion portion 62b of the attachment body 62 is prevented.

That is, even if a negative pressure change in the air flow path 62a and the housing chamber 54 due to the entry of air is caused, the sub-valve 77 drops by gravity and opens the sub-valve hole 78. Since the flow of the internal air passing through the auxiliary working chamber 76 to the pressure reducing means 8 is continued,
There is no drop of the article a from the suction member 6.

Further, when the suction member 6 is not in contact with the surface of the article a, the outside air flows from the suction member 6 through the air flow path 62a and the storage chamber 54 into the sub-operation chamber 76 at a certain speed or higher. The sub-valve 77 rises (is sucked up) by the flow of the air, and closes the sub-valve hole 78.

The auxiliary working chamber 76 may be provided inside a valve body 73 provided in the working chamber 53. As shown in FIG. 3, the auxiliary working chamber 76 flows through the air passage 62a and the housing chamber 54. The leaked air enters the sub-operating chamber 76 through an inflow hole 79 formed in the valve body 73, and the upper sub-valve hole 78
To achieve the same operation and effect as described above.

Accordingly, the apparatus B of the present invention configured as described above has the following effects.

FIG. 1 shows a state in which the article suction device B of the first embodiment is connected to the decompression means 8 and is driven. FIGS. 4 and 5 show the article suction device B as the article a. 2 shows a state in which the action is performed on.

When the article suction device B is not acting on the article a, that is, in the case shown in FIG. 1, the mounting body (adjusting tube) 62 is extended by a resilient device 64 such as a coil spring. Accordingly, the linking body (tensile member) 74
Pulls the valve element (valve) 73 downward, and the valve element (valve)
The second valve hole (lower valve port) 72 is closed by pressing the second valve hole 73 to the second valve hole (lower valve port) 72, and the ventilation hole 55 passing through the air flow path 62 a and the storage chamber 54 from the suction member 6 is closed. Inflow of air from the air is blocked.

In the sub-operating chamber (sub-ventilation path) 76, the sub-valve (free valve) 77 is opened by the flow of air that first rises in the sub-operating chamber (sub-ventilation path) 76, that is, when the pressure reducing means 8 operates. It rises and presses against the sub-valve hole (sub-valve port) 78 to close the sub-valve hole (sub-valve port) 78.

Therefore, the air circulation path of the main body 5 of the article suction device B is automatically closed immediately after the pressure reducing means 8 (suction pump) is started, and this state is maintained while the pressure reducing means 8 is operating. Is always maintained.

Next, when the suction member 6 of the article suction device B in the above state is pressed against the surface of the article a, FIG.
As shown in (a), the suction pad 65 provided at the lower part of the cover (cup) 61 comes into contact with the surface of the article a, and the opening is closed by the article a.

Then, the mounting body (adjusting tube) 62 is apparently shortened by the amount that the main body 5 is pressed against the bullet 64, and the upper end thereof moves into a so-called accommodation chamber 54 (lower gap chamber). And a valve body (valve) to the second valve hole (lower valve port) 72
The pressure contact state of 73 is released. Then, from the suction chamber 15 in the suction member 6, the air flow path 62a, the accommodation chamber 54, the working chamber 5
3 is removed by suction from the suction holes (connection nozzles) 51, and the suction member 6 is in a state of being suctioned to the article a.

Further, when the suction elimination is sufficiently advanced, the pressure in the storage chamber 54 and the suction chamber 15 becomes almost the same as the pressure in the working chamber 53, so that the flow of air in the main body 5 disappears. Both the valve body 73 and the sub-valve body 77 are in a free state in which they do not receive the internal pressure and the air pressure.

Next, when the main body 5 is pulled up, FIG.
As shown in FIG. 7, when the mounting body 62 extends to its original length by the expanding force of the ram, that is, until the locking claw 63 comes into contact with the lower wall of the storage chamber 54, the valve body 73 is moved to the second valve hole 72.
To close the second valve hole 72.

At this time, the sub-valve 77
Is in a free state in which it does not receive the internal pressure or the fluid pressure, for example, there is some unevenness or a gap (leak) between the article a and the suction pad 65, and
Even if a young thousand air enters the inside, the air is
Since the air is sucked through the working chamber 53 and the suction hole 51 through the suction chamber 6, the reduced pressure (negative pressure) in the suction chamber 15 is maintained, and the suction ability of the article a is maintained.

In this embodiment, a suction pad 65 having an appropriate elasticity, such as synthetic rubber, is attached to the lower peripheral edge of the cover 61, and when the article suction device B is pressed against the article a, the cover 61 is turned off. By avoiding direct contact with the article a, the contact impact on the article a is absorbed and alleviated, and the adsorption to the article a is further ensured. Even if the surface thereof has some irregularities, the adsorption effect is exhibited. I am trying to be.

In this state, the article a sucked and held is transferred to another processing machine or the like.
As shown in FIG. 4A, the article a is placed on another mounting table 12 so that the attachment body 62 contracts, and after the decompression operation of the decompression means 8 is stopped, the inside of the working chamber 53 is exhausted or air is supplied. By doing so, the adsorption member 6 and the article a are separated.

In particular, the effective configuration of the apparatus B according to the present invention is such that when the article suction device B is pressed against the article a, there is a predetermined projecting portion or a recessed portion at the suction position on the article a surface. As shown in FIG. 5, when the suction action portion of the suction pad 65 protrudes from the outer peripheral edge of the article a,
Even when a predetermined reduced pressure (negative pressure) is not applied to the suction chamber 15, there is no problem in reducing the pressure on the plurality of other suction members 6.

At this time, due to the contact and pressing of the suction member 6 against the surface of the article a, the attachment body 62 contracts against the elastic machine 64, and tension on the linking body 74 that links the valve body 73. Is loose and loose.

That is, the suction pad 6 by the pressure reducing means 8
5 sucked from the suction chamber 15 into the air passage 62
a, which is discharged through the storage chamber 54, the working chamber 53, the ventilation hole 55, and the suction hole 51, but the valve body 73 easily moves due to the slack of the link 74, and the flow pressure of the discharged air is reduced. The suction force causes the first valve hole 7 in the working chamber 53 to move.
1 and comes into contact with the valve seat 71a to contact the first valve hole 7a.
1 to block the flow of air.

In this embodiment, the valve body 73 has a spherical shape. However, other shapes, for example, a disk shape, may be used.

In short, the structure of the valve body 73 is sufficient if it has a function of closing the first and second valve bodies 71 and 72.

Further, the apparatus B according to the first embodiment of the present invention is capable of adsorbing the article a in a downward direction, as well as using an arbitrary angle such as a horizontal direction or an upward direction for adsorbing the article a. However, since the same operation and effect can be exerted, the range of use can be expanded.

Next, an article suction apparatus B according to a second embodiment of the present invention will be described with reference to FIGS.

This embodiment has a simplified structure of the first embodiment, and includes a main body 5, a pressure reducing means 8,
It comprises an operating chamber 53, a first valve hole 71, a second valve hole 72, a valve body 73, a linking body 74, a suction member 6, and a spring 64.

The main body 5 described above is, for example, shown in FIG.
As shown in FIG. 1, in a conventional transport device 10, a plurality of frames are supported at predetermined intervals on a frame 11 which can move up and down and move in the left-right and front-rear directions, and are mounted on a mounting table 12 such as a table or a conveyor. The predetermined movement is given to the article a.

The pressure reducing means 8 is provided so as to be connected to the main body 5 to apply a suction force to an adsorbing member 6, which will be described later, and comprises a vacuum pump 8a, an on-off valve 8b, a pipe 8c, and the like. A predetermined pressure is reduced and a suction force is applied to the suction chamber 15 of the suction member 6 provided at the lower part of the main body 5, and the upper part of the plurality of main bodies 5 is communicated with the first valve holes 71. An integral decompression chamber 8d is provided continuously.

The above-mentioned working chamber 53 is provided for a plurality of main bodies 5 connected to the decompression means 8, and a decompression force from the decompression means 8 is applied to the inside thereof via the decompression chamber 8d. It is like that.

The above-described first valve hole 71 is provided on one side of the working chamber 53, that is, on the upper wall, and is disposed so as to be connected to the working chamber 53. Is provided.

The above-described second valve hole 72 is provided on the other side of the first valve hole 71, that is, on the lower wall of the working chamber 53 so as to be open to the atmosphere, and a valve seat 72a is provided on the peripheral edge thereof. Have been.

As shown in FIGS. 6 and 8 to 10, the valve body 73 is movably provided in the working chamber 53, and is moved to the valve seats 71a, 72a of the first and second valve holes 71, 72. The valve holes 71 and 72 are selectively closed and opened correspondingly.

The link 74 has one end connected to the valve 73 through the second valve hole 72 and the other end connected to the article a.
Connected to the article pressing body 9 provided on the suction side of
Although not shown, it is provided so as to be able to freely contact and separate.
4 is tensioned, the valve body 73 is pulled, and the valve body 73 is pulled.
Is in contact with the valve seat 72a of the second valve hole 72, and the length thereof is adjusted so that the communication between the suction member 6 and the pressure reducing means 8 is interrupted.

As shown in FIG. 9A, when a pressing force acts on the main body 5 to shorten the link 74,
The valve element 73 is in a free state, and can move up and down freely, so that air can flow in from the second valve hole 72.

The linking member 74 may be made of, for example, a steel wire or the like which does not expand or contract by itself, but is preferably made of a flexible material such as a thread made of natural or artificial fiber having a predetermined diameter or a synthetic resin wire such as tex. It is formed by members,
When the linking member 74 contracts, the suction chamber 15 and the working chamber 5
The slack portion in 3 can be present so as not to interfere.

The ram 64 is provided between the article pusher 9 below the link 74 and the lower side wall of the main body 5 and always tensions the link 74 to make the second valve hole formed by the valve element. This uses a coil spring that is mounted on the linking body 74, and performs a buffering action when the article suction device B descends and the suction member 6 comes into contact with the surface of the article a. Absorbs the excessive drop amount of B.

Therefore, it is preferable that the elasticity of the elastic machine 64 using the coil spring has such a softness that it does not receive the suction force of the pressure reducing means 8.

The suction member 6 is provided at an appropriate position on the main body 5 so that the lower peripheral edge of the suction member 6 abuts against the surface of the article a in a close contact state, and has a cup shape in which a predetermined suction chamber 15 is formed.
By molding from a material such as rubber, sponge, urethane foam, or the like that provides good adhesion to the surface of the article a, the article a
Thus, even if the surface of the article a has some irregularities, the adsorption effect is exhibited.

When the suction member 6 is made of a relatively hard material, the article pressing body 9 is disposed so as to protrude from the lower edge surface of the suction member 6. When 6 is made of a relatively soft material, it does not necessarily have to be in a protruding state, but may be in a state substantially flush with the lower edge surface of the suction member 6 or in a retracted state.

Therefore, the device B of the second embodiment constructed as described above has the following effects.

When the article adsorbing device B is not acting on the article a, that is, in the case shown in FIG. 8, the article pusher 9 is pushed down by a resilient device 64 such as a coil spring. Then, the linking element 74 pulls the valve element 73 downward and presses the valve element 73 against the second valve hole 72, so that the second valve hole 72 is closed, and the connection from the suction chamber 15 in the suction member 6 is performed. External air is prevented from flowing.

Therefore, when the pressure reducing means 8 is activated, its flow path is automatically closed immediately, and this state is always maintained while the pressure reducing means 8 is operating.

Next, when the suction member 6 of the article suction device B in the above state is pressed against the surface of the article a, FIG.
As shown in (a), the lower peripheral edge of the suction member 6 comes into contact with the surface of the article a, and the opening is closed by the article a.

Then, as much as the main body 5 is pressed,
The article pusher 9 rises against the ram 64, and together with the slack of the link 74, the press-contact state of the second valve hole 72 a of the valve 73 is released and the closing force is lost.

Then, the air in the suction chamber 15 and the working chamber 53 from the suction chamber 15 in the suction member 6 is removed by suction by the decompression means 8, and the suction member 6 is suctioned to the article a.

Further, when the suction elimination is sufficiently advanced, the pressure in the suction chamber 15 becomes almost the same as the pressure in the working chamber 53, so that the air does not flow in the main body 5 and the valve body 73 is removed. It is in a free state not receiving the internal pressure and the air pressure.

Therefore, when the main body 5 is lifted, the
The article a by the suction force of the pressure reducing means 8 stronger than the restoring force of the article 4
Maintains its adsorption and retention.

In this state, the article a sucked and held is transferred to another processing machine or the like.
As shown in FIG. 9A, the article a is placed on another mounting table 12, and after the decompression operation of the decompression means 8 is stopped, the inside of the working chamber 53 is evacuated or air-supplied, so that the suction member 6 is provided. And the article a.

In particular, the effective configuration of the device B according to the present invention is such that when the article suction device B is pressed against the article a, there is a predetermined projecting portion or a recessed portion at the suction position on the article a surface. In FIG. 10 and FIG.
As shown in (b), the suction action portion of the suction member 6 is the article a.
Is that the article a can be sucked and held even if it protrudes from the outer peripheral edge of the object a.

That is, in the example of the case shown in FIG. 10, a predetermined reduced pressure (negative pressure) is set in the suction chamber 15.
Therefore, in the conventional suction device, there is a problem in that the suction is performed on a plurality of other suction members 6, for example, by the suction member 6 shown in FIG. May come.

However, in the apparatus B of the second embodiment of the present invention, as shown in FIG. 10, when one or more of the plurality of suction members 6 are out of the surface of the article a. In the valve body 73, the article pushing body 9 to which the lower end of the linking body 74 is fixed is pushed down by an elastic machine 64.

Accordingly, the linking element 74 pulls the valve element 73 downward and presses the valve element 73 against the second valve hole 72, so that the second valve hole 72 is closed and the suction is performed. Since the inflow of external air from the suction chamber 15 in the member 6 is prevented, the negative pressure to the decompression chamber 8d is not affected at all.

Therefore, the suction chamber 15 of the suction member 6 shown in FIG. 10 maintains the continuous suction.

In the case shown in FIG. 10, the air sucked by the depressurizing means 8 from the gap of the suction member 6 is discharged from the suction chamber 15 through the working chamber 53 and the first valve hole 71. However, the valve body 7 is loosened
The valve body 3 is easily moved in the working chamber 53, and the valve body 73 is pressed against the first valve hole 71 of the working chamber 53 by the fluid pressure of the discharged air and its suction force. 71a
And closes the first valve hole 71.

Therefore, the suction chamber 1 in the suction member 6
Since the inflow of the outside air from the pressure chamber 5 is prevented, the decompression chamber 8
It has no effect on the negative pressure on d.
The suction chamber 15 of the suction member 6 with respect to 0 maintains continuous suction.

In this embodiment, the valve body 73 is formed in a spherical shape. However, other shapes such as a disk shape may be used.

In short, it is sufficient that the valve body 73 has a function of closing the first and second valve bodies 71 and 72.

Further, the apparatus B according to the second embodiment of the present invention is capable of adsorbing the article a in a downward direction, as well as using an arbitrary angle such as a horizontal direction or an upward direction in which the article a is adsorbed. However, since the same operation and effect can be exerted, the range of use can be expanded.

Further, the apparatus B of the first and second embodiments can press the suction member 6 against the surface of the article a when the pressure reducing means 8 is in operation, that is, when the suction chamber 15 is in a negative pressure state. Can be quickly performed.

[0087]

As described above, according to the present invention, even if a suction leak occurs due to a plurality of suction members not corresponding to the article surface, the valve is immediately inserted into the first or second valve hole of the working chamber. Since the body abuts and closes it and does not perform continuous suction of outside air, using the same depressurizing means by the same depressurizing system, there is a special effect that can surely hold and hold the article by suction. is there.

[Brief description of the drawings]

FIG. 1 is an article suction device (adsorption element) according to the present invention.
1 is a vertical sectional front view showing a first embodiment of the present invention.

FIG. 2 is an overall schematic diagram of the device in FIG.

FIG. 3 is a sectional view of a main part showing another example of a sub working chamber of the apparatus in FIG. 1;

FIG. 4 is a sectional view showing an operation state of the device in FIG. 1;

FIG. 5 is a cross-sectional view showing a state in which intake air leakage has occurred in the apparatus in FIG. 1;

FIG. 6 is a vertical sectional front view showing a second embodiment of the article suction device according to the present invention.

FIG. 7 is an overall schematic diagram of the device in FIG. 6;

8 is a sectional view of a main part showing an operation state when the apparatus in FIG. 6 does not correspond to an article.

9 is a cross-sectional view of a main part showing an operation state of the device in FIG. 6 when handling an article.

FIG. 10 is an explanatory diagram of the operation of the device in FIG. 6;

FIG. 11 is a schematic explanatory view showing an example of a conventional adsorption device.

[Explanation of symbols]

 a Article 5 Main body 6 Suction member 53 Working chamber (upper space chamber) 6 Suction member 61 Cup 62 Attachment body (adjustment tube) 64 Elastic machine (coil spring) 71 First valve hole (upper valve port) 72 Second valve hole ( Lower valve port) 73 valve element (valve) 74 linking element (tensile member) 76 sub-operating chamber (sub-ventilation path) 77 sub-valve element (free valve) 78 sub-valve hole (sub-valve port) 8 decompression means

Claims (3)

[Claims] 1. A connection nozzle is mounted on an upper portion of a main body, and a suction member is mounted on a lower portion of the main body to form an air suction path between a cup of the suction member and the connection nozzle. An upper chamber is formed with an upper valve port and a lower valve port, and a valve is provided between the upper chamber and the lower valve port. The valve is provided when the adjusting pipe of the suction member is in the most extended state. And a sub-ventilation path is formed between the upper cavity chamber and the lower cavity chamber and a free valve is inserted therein, and a sub-valve port is formed on the upper side thereof to form a sub-valve. A free valve closing the air flow when the air rises at a certain speed or more. 2. A main body, a decompression means provided on the main body, one or a plurality of working chambers connected to the decompression means,
A first valve hole connected to the pressure reducing means provided on one side of the working chamber; a second valve hole provided on the other side of the first valve hole so as to open to the atmosphere; A valve body that selectively closes the first and second valve holes movably provided and closes the valve holes, communicates the second valve hole slidably provided in the main body and its air flow path. The hollow attachment body, the suction member provided at the outer end of the attachment body, which contacts the surface of the article, and one end connected to the valve body through the second valve hole, and the other end A link member locked to the suction member or the mounting member, and a resilient machine provided on the suction member or the mounting member, which always closes the link member to close the second valve hole by the valve body; A sub-operation chamber communicating the operation chamber with an air flow path of the mounting body via a sub-valve hole provided in the main body; Article adsorber, characterized in that it allowed a secondary valve body for selective occlusion and opening the auxiliary valve hole provided. 3. A main body, a decompression means provided on the main body, one or more working chambers connected to the decompression means,
A first valve hole connected to the pressure reducing means provided on one side of the working chamber; a second valve hole provided on the other side of the first valve hole so as to open to the atmosphere; A valve body for selectively closing the first and second valve holes movably provided and closing these valve holes, and connecting one end to the valve body through the second valve hole; and A link body having an end connected to an article pusher provided on the suction side of the article, and a resilient mechanism provided in the link body for always closing the link to close the second valve hole by the valve body. And an adsorbing member for preventing an outside air from flowing into the second valve hole when coming into contact with an article surface provided on a peripheral portion of the article pressing body.