JPH0676127B2 - Check valve for controlling fluid flow direction, suction belt for transporting articles and suction transport device using the same - Google Patents

Description

DETAILED DESCRIPTION OF THE INVENTION [Field of Industrial Application] The present invention relates to a non-return valve which is arranged in a flow control unit for a fluid such as air and which controls the flow direction thereof, and an endless device which circulates between rotors. The suction belt on the outer surface of the crawler belt vacuum-sucks to the wall surface or the outer surface of the article to transfer the article, and the suction belt for rotation transfers between the rotor of the suction belt and the suction belt for vacuum suction traveling along the wall surface. In a suction transfer device that moves the position of an article such as equipment or conveys an adsorbed article on a belt, a check valve capable of performing an accurate flow direction control of a fluid with a simple structure, By disposing this check valve at each suction portion of the suction belt, even if the vacuum holding of a part of the suction portion is broken, the vacuum holding of the suction portion adjacent thereto is prevented from being broken and the suction belt for the wall surface or the article is held. The whole truth Relates adsorbing article transfer was no way to obtain ensures stable belt and suction transfer device of the suction force.

[Conventional technology]

As a conventional check valve for controlling the flow direction of a fluid, a valve is generally provided with a spring, and the valve body is opened / closed by the fluid pressure and the restoring force of the spring to prevent the fluid from flowing in a predetermined direction and prevent backflow. It is of structure.

Further, as an adsorption belt in which the adsorption portion on the outer surface of the endless track that circulates and rotates is vacuum-adsorbed on the wall surface or the outer surface of an article, and an adsorption transfer device using this adsorption belt is disclosed in, for example, Japanese Patent Application Laid-Open
There is a wall suction traveling device and an article conveying device (conveying conveyor) disclosed in Japanese Patent Laid-Open No. 62-175309.

The former wall suction traveling device B ′ is, as shown in the fourteenth illustration, wound around the suction belt 3 between at least a pair of rotors 2, 2 pivotally mounted on the machine frame 1 to circulate and rotate the suction belt 3. the dynamic time a plurality of recesses 3 ₂ serving adsorbing portion is disposed on an outer surface thereof, a plurality communication which is disposed on the bottom surface of the vacuum box 4 which is attached to the machine frame 1 in contact with the inner surface of the suction belt 3 the chamber 5, sequentially allowed connected through the through hole 3 ₃ provided the recessed 3 _2, via said vacuum generating means connected to each communication chamber 5 of the vacuum box 4 (not shown) the recessed
The part in contact with the wall surface in 3 ₂ is vacuum-held so that the outer surface of the suction belt 3 is vacuum-sucked to the wall surface and the rotor 2, 2
The suction belt 3 is circulated and rotated by the drive to move along the wall surface, and the articles such as working equipment mounted on the machine frame 1 are transferred along the wall surface. The suction belt 3 is used an endless crawler belt 3 ₁ made of rubber, along with a plurality of recesses 3 ₂ are disposed adjacent at appropriate intervals along the length direction of the outer surface, the recessed 3 ₂ in the bottom surface A through hole 3 ₃ is formed in the portion so as to connect the recess 3 ₂ and the outside of the inner surface side of the endless crawler belt 3 ₁ . The plurality of communication chambers 5 in the vacuum box 4 are formed at appropriate intervals along the length direction on the bottom surface of the vacuum box 4, but the length (or diameter) of each communication chamber 5 and the adjoining space are different. It is taken greater than that of the recessed 3 ₂ of the suction belt 3. Then, each communication chamber 5 of the vacuum box 4 is connected to an appropriate vacuum generating means via an exhaust pipe 6, a connecting fitting 7, and an exhaust hose 8.

Although not shown in the drawings, the latter vacuum-conveying article conveying device is not limited to the above-mentioned pair of rotors 2, 2 and the suction belt 3.
The machine frame 1 attached with is fixedly arranged at an appropriate place such as a floor surface or a wall surface, and a vacuum box 4 having a communication chamber 5 is installed in the rotor.
The suction box 3 wound between the rotors 2 and 2 is placed so as to face the inner surfaces of both sides of the suction belt 3 or one of the inner surfaces of the suction belt 3 wound between the rotors 2 and 2. The belt 3 is circulated and rotated to convey an article whose outer surface is vacuum-adsorbed.

[Problems to be Solved by the Invention]

However, the conventional check valves, suction belts, and suction transfer devices have the following problems in structure.

First, the check valve requires a spring for closing and closing the valve, and when the fluid is low-pressure air or the like, the elastic strength of the spring may interfere with the smooth opening of the valve element. .

Then, in the suction belt and the wall suction driving apparatus B ', the recessed 3 ₂ of the suction belt 3 outer surface is intended sequentially connected to each communication chamber 5 of the vacuum box 4 bottom through the respective through holes 3 _3, Since each recess 3 ₂ and each communication chamber 5 have different lengths (or diameters) and adjacent intervals, a plurality of recesses 3 ₂ adjacent to one communication chamber 5 each have a through hole 3 when used. _When a plurality of recesses 3 ₂ are connected at the same time through ₃ and adjacent recesses 3 ₂ are connected through the communication chamber 5, in this case, if there are irregularities such as cracks or protrusions on the wall surface, these irregularities vacuum holding recess 3 in ₂ vacuum holding recess 3 in ₂ encountered in part is adjacent thereto not only be destroyed also becomes to be destroyed, the suction portion of the suction belt 3 such a situation is in contact with the wall surface When it reaches the majority, the suction force of the entire suction belt 3 It causes deterioration, devices which may lack stability adsorption travel equal device from falling off the wall by its own weight. That is, as shown in the fifteenth illustration, the wall surface H of the device B '
During the adsorption traveling above, there are irregularities such as cracks K on the wall surface H. Sometimes, this is the arrival drawings right recess 3 in ₂ cracks K becomes that the vacuum holding invade a large amount outside air through cracks K is destroyed, the left side of the drawing of the recess 3 adjacent to this ₂ 'its hole 3 _3' because the control of the communication direction between the air are connected to the same communication chamber 5 and the right side of the recess is connected via a not been, vacuum retention is broken has been positive pressure air having a pressure comparable to the atmospheric pressure in the right recess 3 in ₂ not only led to a vacuum generating means through the communication chamber 5, the communication chamber 5 and through hole 3 ₃ next ' The recesses 3 ₂ ′ on the left side also penetrate into the recesses 3 ₂ ′ on the left side, and as a result, the vacuum holding in the recesses 3 ₂ ′ that is maintained at a negative pressure is also broken.

Such a problem that the vacuum holding that occurs in a part of the suction belt is broken not only in that recess but also in the adjacent recesses. The same applies to the above-described article transporting device for transporting the article.

The present invention has been made to solve the problems of the prior art as described above, and has a simple structure that does not require a spring for closing the valve element and is suitable for controlling the flow direction of a fluid such as low-pressure air. By arranging the check valve that can be surely done and each suction part of this check valve suction belt,
When the vacuum holding breaks in a part of the sucking belt, the breaking of the vacuum holding is limited to the sucking portion and the spread to the adjacent sucking portion is surely prevented, and the entire sucking belt against the wall surface or the article is always kept. It is an object of the present invention to provide a suction belt for transferring articles and a suction transfer device capable of stabilizing the vacuum suction force.

[Means for Solving the Problems]

Therefore, the present invention takes the following means in order to achieve the above object. That is, first, in a check valve which is arranged at a fluid flow direction control portion to prevent the reverse flow of the fluid and controls the flow direction thereof, a hard plate body having a small hole in the center of the plate surface, It has a low hardness and flexibility and a soft plate body having a suitable number of slits formed in the plate surface so as not to be coded as the small holes at the time of polymerization, and the hard plate body and the soft plate body are formed. The valve body is formed by adhering the plate surface except the area where the small hole and the slit are located, and the soft plate body side of this valve body is positioned so as to be located on the downstream side in the fluid flow direction. It is placed in the flow direction control part.

Next, in the suction belt for transferring an article, in which the article is vacuum-sucked and the article is transferred by circulating the belt, a plurality of recesses are arranged at appropriate intervals along the length direction of the outer surface of the endless shoe. In addition, in the suction belt formed by forming a through hole that communicates the recess with the outside of the inner surface of the endless track on the inner bottom surface of each recess, the vacuum retention breakage that occurs in some recesses is cascaded to the adjacent recesses. In order to prevent the above, a check valve in which the hard plate and the soft plate are partially polymer-bonded to the inner bottom surface of each recess to form a valve body, and the soft plate side of the valve body is recessed. It is mounted on the side of the through hole. The suction belt is wound between a pair of rotors and circulates and rotates by the drive of the rotor, and the recesses of the suction belt are rotatably rotated between the rotors of the suction belt through the through holes. A vacuum generating means for sequentially connecting to a plurality of communication chambers arranged at appropriate intervals on one side in the length direction of a vacuum box arranged to face each other along the length direction on the inner surface side, and connecting to each communication chamber is provided. Through vacuum, holding each recess of the suction belt in contact with the wall surface or the outer surface of the article,
The outer surface of the suction belt is vacuum-sucked to the wall surface or the outer surface of the article, and the articles are transferred onto the wall surface or the suction belt by circulating rotation between the rotors of the suction belt.

Further, in an adsorption transfer device for transferring articles such as work equipment that is mounted by traveling by vacuum adsorption on a wall surface, it is wound between at least a pair of rotors pivotally attached to a machine frame, and the rotors are driven to move between the rotors. As the suction belt which circulates and rotates, the suction belt having the same structure as the suction belt for article transfer has a plurality of recesses arranged in a row in a row on the outer surface of the endless crawler belt, and a through hole is formed in the bottom surface of each recess. In order to prevent the breakage of vacuum holding generated in some recesses due to cracks on the wall surface from spreading to adjacent recesses in a chain, the above hard plate is formed on the bottom surface of each recess of the suction belt. A check valve having a valve body formed by partially polymerizing and adhering a body and a soft plate body is attached with the soft plate body side of the valve body positioned at the through hole side of the recess. The vacuum suction means for the wall surface of the apparatus is the same as in the use state of the suction belt for article transfer, and each recess contacting the wall surface by sequentially connecting the recesses of the suction belt to each communication chamber of the vacuum box connected to the vacuum generation means. It is carried out by maintaining the vacuum inside, and the rotor is driven by the rotor to circulate and rotate between the rotors to move along the wall surface while maintaining the vacuum suction state to the wall surface of the suction belt. It is designed to be transferred in.

Further, even in a suction transfer device that conveys an article vacuum-sucked on the outer surface of the suction belt by circulating and rotating the suction belt, a vacuum is not maintained inside the recess of the suction belt in an article on which an article is not placed, so that it is adjacent to it. In order to prevent the vacuum holding in the recess that has adsorbed the article from being broken, the hard plate and the soft plate are formed on the bottom surface of each recess of the adsorption belt in the same manner as the adsorption transfer device by the wall adsorption traveling. This is also the same with respect to the point that the check valve is attached and that the soft plate side is located and arranged on the through hole side of the recess. The same applies to the vacuum suction means for the outer surface of the article of the suction belt. However, in this device, unlike the adsorption transfer device by the wall surface adsorption traveling, the vacuum box having a plurality of communication chambers connected to the vacuum generating means is not limited to one side of the adsorption belt wound between the rotors. In some cases, the machine frame on which the rotor is pivotally mounted is installed on the floor or wall surface.

[Work]

Therefore, the above-mentioned configuration of the present invention has the following effects.

First, in the check valve for controlling the flow direction of the fluid, when a fluid such as low-pressure air is supplied, the low-pressure air passes through a small hole provided on the hard plate side of the valve body and the soft plate body. The non-adhesive surface of the soft plate is pressed against the non-adhesive surface by the pressurizing action of the low pressure air because the soft plate has flexibility and the slits are provided on the non-adhesive surface. And a convex portion is curved downstream, and the slit portion is largely opened accordingly. Therefore, the low-pressure air that has passed through the small hole on the hard plate side of the valve body flows to the downstream side through the slit portion on the soft plate side that is largely opened. On the other hand, on the contrary, when pressurized air is generated on the downstream side, the non-adhesive surface of the soft plate body is pressed toward the hard plate body by the pressurizing action of this air to close the small holes of the hard plate body, Backflow of the pressurized air from the downstream side to the upstream side is prevented. Further, since the hard plate body and the soft plate body forming the valve body are made of a material such as rubber or resin having a hardness difference and are thinly formed, even if the fluid is low pressure air or the like having a low pressure. Therefore, the bending action of the soft plate member and thus the opening / closing operation of the valve member are smoothly performed, and the hard plate member does not bend.

Next, in a suction belt in which a check valve consisting of the hard plate body and the soft plate body is arranged in a predetermined manner on the inner bottom surface of each recess of the endless crawler belt, and a wall surface suction traveling type suction transfer device using this suction belt, , If the vacuum holding in the recess of the suction belt that has reached there is broken due to the unevenness such as cracks or protrusions on the wall surface of the suction belt that travels by vacuum suction, it occurs in this recess The positive pressure air enters the communication chamber of the vacuum box through the check valve which is opened due to the bending of the non-adhesive surface of the soft plate member by the operation of the vacuum generating means, and is simultaneously connected to this communication chamber. Attempts to enter into the adjacent recess through the through hole of the adjacent recess, but the soft plate side of the check valve disposed in the through hole of the adjacent recess pressurizes positive pressure air into the communication chamber. Hard due to action Because curved side to close the small hole part, entry into the positive pressure air adjacent the recess is prevented, vacuum in the neighbor list is maintained.

Further, in an adsorption transfer device that conveys articles vacuum-adsorbed on the outer surface along the belt by circulating and rotating the adsorption belt, articles of various shapes and sizes are placed on the adsorption belt at appropriate intervals. Therefore, the recess of the suction belt located in the gap between the articles is largely opened to the atmosphere and the vacuum is not maintained, and the positive pressure air in the recess is connected to the communication chamber of the vacuum box and the adjacent chamber. Attempts to penetrate into the adjacent recess through the through hole of the recess, but in this case as well, as in the case of the wall surface adsorption traveling type adsorption transfer device, the small size on the hard plate side due to the bending action on the soft plate side of the check valve is The closing action of the hole prevents the positive pressure air in the communication chamber from entering the adjacent recess, and as a result, when the adjacent recess is vacuum-adsorbed on the outer surface of the article, the vacuum state is maintained. It is.

〔Example〕

Hereinafter, an embodiment of a check valve for controlling the flow direction of a fluid according to the present invention, an adsorption belt for article transfer and an adsorption transfer device using the same will be described with reference to the attached sheet drawings 1 to 13. .

FIG. 1 shows the overall structure of the check valve for controlling the flow direction of the fluid, and FIGS. 2 and 3 show its disassembled structure. In the above drawings, A is a check valve arranged in the fluid communication direction control portion, which is composed of a hard plate body 10 and a soft plate body 12 having a lower hardness and flexibility than the hard plate body 10. The valve body is formed by bonding with the exception of a part of the weight. The hard plate member 10 has a small hole 11 formed in the center of the plate surface, and the soft plate member 12 has two slits 13 formed in the plate surface at appropriate intervals and at appropriate intervals. ing. The two slits 13 face each other with a small hole 11 interposed therebetween so that the double slit 13 does not coincide with the small hole 11 of the hard plate body 10 when the hard plate body 10 and the soft plate body 12 are superposed. The size is set appropriately. The hard plate 10 and the soft plate 12 are overlapped and bonded, but the portion D (see FIG. 1a) within the range where the slits 13 and the small holes 11 of both plates are located is a non-bonded surface. Is said. The hard plate 10 uses a hard rubber or a hard resin having a relatively high hardness, and the soft plate 12 uses a soft rubber or a soft resin having a lower hardness than this, and both are formed into a flaky plate. There is. The plate shape is an appropriate shape such as a square shape or a circular shape as shown in the figure. Further, the check valve A formed by polymerizing and adhering the hard plate body 10 and the soft plate body 12 has the soft plate 12 at the fluid flow direction control portion.
The side is positioned downstream.

Therefore, at the time of supplying the fluid, the supplied fluid passes through the small holes 11 of the hard plate body 10 and the soft plate body due to the supply pressure.
The non-adhesive surface D of 12 is extruded, and accordingly, the non-adhesive surface D of the soft plate body 12 is convexly curved to the downstream side with the two slits 13 as a boundary, and the slit 13 is largely opened. ,
The supply fluid that has passed through the small holes 11 flows to the downstream side through the large opening slits 13 of the soft plate body 12 located on both sides of the small holes 13. On the contrary, when the pressurized fluid is generated on the downstream side, the non-adhesive surface D of the soft plate body 12 is convexly curved toward the hard plate body 10 by the applied pressure, and the hard plate body is bent.
Since the small holes 11 of 10 are closed, the fluid does not flow backward from the downstream side to the upstream side.

In the above embodiment, the check valve A has the soft plate 12 having the two slits 13. However, the number of slits is not limited to this, and may be an appropriate number such as one slit.

FIGS. 4 to 9 show the structure of the wall surface suction traveling device B in which the check valve A is attached to the suction portion of the suction belt and the action of the check valve A in each suction portion. The structure of this wall suction traveling device B is the same as that of the conventional wall suction traveling device B'shown in FIG. 14 except that the check valve A is arranged on the suction belt, and therefore FIG. The same reference numeral as that of indicates the same member. As shown in Figure 5,
The pair of rotors 2, 2 are disposed on both left and right sides of the mounting frame 1, and therefore the suction belt 3 wound between the rotors is also disposed on both left and right sides of the machine frame 1 in the longitudinal direction. The suction belt 3, a plurality of recesses 3 ₂ cascade disposed along the longitudinal direction the outer surface of the endless Kutsugaetai 3 _1, for communicating the inner and outer surfaces of the endless track 3 ₁ Each recess 3 in ₂ bottom portion Toru Although forming a hole 3 _3, wherein the inner bottom portion of the recessed 3 _2, the hard plates 10
Check valve A composed of a soft plate 12. is to place the soft plate member 12 side to the through hole 3 ₃ side are attached by adhesion and.

The small hole 11 of the hard plate body 10 and the slit 13 of the soft plate body 12 are both set so as to be located within the hole diameter of the through hole 3 ₃ in the bottom surface of each recess 3 ₃ . On the inner surface side of the suction belt 3, a vacuum box 4 having a plurality of communication chambers 5 connected in series on the bottom surface and connected to a vacuum generating means (air ejector, vacuum pump, etc.) is arranged along the belt length so as to face each other. is doing. Two sets of rotors 2,2 'arranged on both left and right sides
, One set is driven by the drive motor 9 and the other set is driven by the rear wheel.

When the wall surface suction traveling device B having the above structure is arranged on the wall surface H and the rotors 2 and 2'are driven to rotate the suction belt 3 between the rotors and operate the vacuum generating means,
The air in each communication chamber 5 of the vacuum box 4 is exhausted and the inside of the communication chamber 5 becomes negative pressure. When the inside of the communication chamber 5 becomes negative pressure, the communication chamber 5 is accompanied by the negative pressure as shown in FIGS. 7 to 9.
Hole 3 ₃ via by flexible plate of the check valve A which are arranged in the recess 3 in the _second bottom surface portion of the suction belt 3 has a connection state body 12
Non-adhesive surface D of the hard plate 10 is disposed on either side of the non-adhesive surface D of the through hole 3 in the ₃ curved sucked into the communication chamber 5 side upward, the soft plate member 12 which is curved therefor in The slit 13 has a large opening in the vertical direction, and the opening and the small hole 11 of the hard plate body 10 are in communication with each other. Therefore,
Air is also small hole in the recess 3 ₂ suction belt 3 the check valve A is in contact with the arranged wall H by the operation of the vacuum generating means
11, opening of the slit 13, through holes 3 _3, is sucked exhausted through the communication chamber 5, the portion in also becomes negative pressure, the suction belt 3 is vacuum-sucked against the wall H. Such a suction belt 3
By sequential connection of the vacuum maintained in the recessed 3 in ₂ for each communication chamber 5 of each recess 3 ₂ of the vacuum box 4 by circulation rotation between the rotor 2 and 2, the device B adsorbed traveling along the wall surface H Articles such as work equipment mounted on the machine casing 1 are transferred along the wall surface.

Thus, if there is uneven portion such as a crack K in FIG. 7 to 9 view of as on the walls H, the leakage of air through the crack K arrival the recess 3 ₂ in the crack K of the suction belt 3 Therefore, the vacuum holding is broken and the negative pressure state or the positive pressure state is obtained. Positive pressure air in the recess 3 in the _2, wherein the opening of the check valve A (even if temporary closed check valve A, by the opening action of the check valve A by pressing action of the positive pressure air) the invaded communication chamber 5 from the opening, also penetrate the adjacent recesses 3 ₂ 'in' via hole 3 ₃ 'guided by one the communication chamber 5 to the adjacent recess 3 ₂ connected simultaneously to a vacuum generating means Try to (see Figure 7).

However, the check valve A is also arranged in this recess 3 ₂ ′,
The soft plate body of the check valve A by the pressurizing action of the positive pressure air.
Since the non-adhesive surface D of 12 is pressed and curved to the side of the hard plate body 10 on the contrary to close the small hole 11 of the hard plate body 10, this positive pressure air enters into the adjacent recess 3 ₂ ′. Is prevented and the negative pressure state in the adjacent recess 3 ₂ ′ is maintained. Therefore, even if the vacuum retention within a portion of the recess 3 ₂ of the suction belt 3 by cracks on the wall surface is destroyed, not that the destruction is spread to neighbor list by the presence of the check valve A, the one Only the recess of the department.

FIGS. 10 and 11 show the structure of an article transporting device C using a suction belt having a check valve A at the same suction portion of the wall suction traveling device B as a transport belt. In the same drawing, 1'is a machine frame of the device C installed on the floor surface F or the wall surface H, and a pair of rotors 2, 2 are pivotally attached to the front and rear of this machine frame.
A suction belt 3 is wound in between, and the rotors 2, 2 are driven to rotate and rotate between the rotors. A pair of vacuum boxes 4 in which a plurality of communication chambers 5 connected in series to the suction belt 3 wound between the rotors 2 and 2 are connected to the vacuum generating means are arranged on the opposite sides. It is attached to the machine frame 1 ′ so as to face each other. The suction belt 3 is of the suction belt and the same structure used in the wall suction traveling device B, therefore, the recessed 3 in the _second bottom surface section and the hard plate member 10 and the soft plate member of the suction belt 3
It is attached by adhesive check valve A composed of 12 Metropolitan by placing its soft plate member 12 side to the through hole 3 ₃ side of the recess.

In this carrying device C, articles M of various shapes and sizes
The suitably mounted on the suction belt 3 at intervals, the article of the suction belt 3 an outer surface to hold the vacuum of the suction belt 3 in the recess 3 in ₂ in contact with the article M by the operation of the vacuum generating means M
Is vacuum-sucked and the suction belt 3 is circulated and rotated between the rotors 2, 2 to convey the article M onto the suction belt 3. Therefore, in this case, as shown in FIG. 11, the recesses of the suction belts 3 located between the articles M are recessed.
Since 3 ₂ ′ is largely open to the atmosphere, the inside is not in a vacuum state, and therefore this recess 3 ₂ ′ and the through hole 3 ₃
And vacuum holding the adjacent recesses 3 in ₂ connected through the Rendorishitsu 5 in contact with the article M is for positive pressure air is destroyed if Itare to penetrate from the hole 3 ₃ article M in the recess 3 ₂ ' This will result in a decrease in adsorption force. However, since the check valve A of the structure in the recess 3 in ₂ are arranged, the vacuum retention of the adjacent recesses 3 in ₂ by the similar effects are intended to be made reliably.

In addition, the vacuum box 4 and the suction belt 3 in the wall surface suction traveling device B and the article conveying device C have
Narrow flexible sealing members 14 and 15 such as sponge rubber shown in FIGS. 13 and 14 are provided. The flexible sealing material 14 is attached so as to protrude outside the treetop so as to surround the communication chambers 5 of the vacuum box 4, and is attached to the inner surface of the suction belt 3 between the vacuum box 4 and the suction belt 3 due to deformation. of preventing leakage are those achieving uplifting vacuum retention within recess 3 ₂ of the suction belt 3. Flexible seal member 15 in a similar purpose, are mounted to project treetops outside while surrounding the periphery of the recessed 3 ₂ of the suction belt 3, the suction belt due to change the shape of the wall surface or the article outer surface 3 To prevent leakage between the wall and the outer surface of the article,
The vacuum suction force of the suction belt 3 is enhanced.

〔The invention's effect〕

Since the present invention is configured as described above, it solves various problems of the above-described conventional art and has the following effects.

First, in the check valve for controlling the flow direction of the fluid, a hard plate having a small hole and a soft plate having a lower hardness and flexibility and having an appropriate number of slits formed at predetermined positions, Except for the plate surface within the range where the small holes and slits are located, the valve body is polymerized and bonded to form the valve body, and the soft plate side of the valve body is arranged downstream in the fluid flow direction at the fluid flow direction control site. Therefore, when the pressing force of the fluid acts in the downstream direction, the fluid flows in the predetermined direction by the opening operation of the valve body due to the downstream bending of the non-adhesive surface in the slit forming portion of the soft plate body of the valve body, while the fluid flows in the predetermined direction. When the pressing force of the reverse works in the upstream direction, the non-adhesive surface of the soft plate body is curved in the upstream direction to close the small hole of the hard plate body, so that the backflow of the fluid is prevented by the closing operation of the valve body. Conventional valve body closing sp Not requiring a ring, it is capable None accurately control the flow direction in the fluid such as low pressure air in a compact structure.

Next, an adsorption belt for the outer surface of the endless crawler which circulates between the rotors is vacuum-adsorbed to the wall surface or the outer surface of the article to transfer the article, and the suction belt is vacuum-adsorbed to the wall surface using the adsorption belt. In a suction transfer device that moves a position of an article such as work equipment along a wall surface or conveys an adsorbed article on a belt, the hard plate and the soft plate are provided on the bottom surface of each recess of the suction belt. Since the check valve consisting of is attached with its soft plate side positioned on the through hole side of the recess, vacuum retention breaks due to various factors in a part of the recess of the suction belt, and this recess is adjacent to this recess. Even when the recess and the recess are connected to the same communication chamber in the vacuum box at the same time, the breakage of the vacuum retention is caused by the flow direction control action of the check valve. It is possible to prevent it from chaining to adjacent recesses in a chained manner, so that it is possible to independently control the vacuum holding of each recess of the suction belt, and always stabilize the vacuum suction force of the entire suction belt against the wall surface or article outer surface. It can be realized.

[Brief description of drawings]

1 to 13 show an embodiment of a check valve for controlling a flow direction of a fluid according to the present invention, an adsorption belt for article transfer and an adsorption transfer device using the check valve, and FIG. ) Is a front view of the check valve, and FIG. 1 (b) is a sectional view taken along line AA of the above.
FIG. 2 (c) is a sectional view taken along line BB, FIG. 2 (a) is a front view of a hard plate in a check valve, and FIG.
A sectional view, FIG. 3 (a) is a front view of the soft plate body in the check valve, FIG. 3 (b) is an AA sectional view of the same, and FIG.
A side view of a suction belt having the check valve arranged in each recess of an endless crawler belt, and a side view of a principal part of a wall suction traveling device in a suction transfer device using the suction belt, in which a part thereof is shown in section, FIG. FIG. 6 is an enlarged plan view of the suction belt portion in the same as above, and FIG. 7 is the reverse of the air flow in the recesses of the suction belt and the adjacent recesses in the suction belt, which reach the irregularities such as cracks on the wall surface. Control action explanatory drawing of stop valve, 8th
FIG. 9 is an enlarged view of a part of the above, FIG. 9 is a sectional view taken along line AA of the above, FIG. 10 is a side view showing a schematic structure of an article transporting device in a suction transfer device using the suction belt, and FIG. Is a vertical cross-sectional view of the main part of the above, FIG. 12 is a vertical cross-sectional view of the vacuum box in the adsorption transfer device in which a flexible sealing material is provided around the communication chamber, and FIG. 13 is a flexible view around the recess. FIG. 14 is a vertical cross-sectional view of an endless track in the adsorption transfer device provided with a sealing material, FIGS. 14 and 15 show a conventional example, and FIG. 14 shows an example of a wall adsorption traveling device in the conventional adsorption transfer device. FIG. 15 is a side view of a main part of which a section is a cross section, and FIG. 15 is an explanatory view of air circulation action in the recess of the suction belt and the adjacent recess thereof, which reach the uneven portion such as a crack on the wall surface. A ... Check valve, 10 ... Hard plate, 11 ... Small hole, 12 ... Soft plate, 13 ... Slit, D ... Non-adhesive surface, B ... Wall adsorption traveling device, C ... Article carrier, 1, 1 '... Machine frame,
2 ... rotor, 3 ... suction belt, 3 ₁ ... endless track,
3 _2, 3 ₂ '... recess, 3 _3, 3 _3' ... hole, 4 ... vacuum box, 5 ... communication chamber, F ... floor, H ... wall,
K: crack, M: article.

Claims (4)

[Claims] 1. A hard plate having a small hole formed in the center of a plate in a check valve arranged at a fluid flow direction control portion to prevent the reverse flow of the fluid and control the flow direction thereof. It is composed of a soft plate body having lower hardness and flexibility and having an appropriate number of slits formed in the plate surface so as not to be coded as the small holes at the time of polymerization, and the hard plate body and the soft plate body are weighed. The valve plate is formed by adhering the plate surfaces excluding the area where the small hole and the slit are located, and the flow direction control part is arranged so that the soft plate side of this valve plate is located on the downstream side in the fluid flow direction. A check valve for controlling the flow direction of a fluid, characterized in that 2. An endless crawler belt that is wound between a pair of rotors and circulates between the rotors, and a plurality of recesses that are arranged on the outer surface of the endless crawler belt along the length direction at appropriate intervals. The inner bottom surface of each recess has a through hole that communicates the recess with the outside of the inner surface of the endless crawler belt, and the endless crawler belt is circulated and rotated between the rotors so that the respective recesses pass through the through holes. The endless crawler belt is connected to a plurality of communication chambers arranged at appropriate intervals on one side in the length direction of a vacuum box that is arranged in contact with the inner surface of the endless crawler belt in sequence, and through a vacuum generating means connected to each communication chamber. By creating a vacuum in each recess of the endless track that is in contact with the wall surface or the outer surface of the article, the vacuum adsorption state of the outer surface of the endless track to the wall surface or the outer surface of the article is maintained, and the article is transferred by circulating rotation between the rotors of the endless track. Adsorption In the belt, the check valve according to claim 1 is attached to the inner bottom surface of each recess in the endless crawler belt of the suction belt with the soft plate side of the valve body positioned on the through hole side. Adsorption belt. 3. At least a pair of rotors pivotally attached to the machine frame, and a plurality of recesses arranged at appropriate intervals along the length direction on the outer surface of the endless crawler belt wound between the rotors. A suction belt with a through hole that communicates the recess with the outside of the inner surface of the endless track is attached to the machine frame in contact with the suction belt inner surface along the length direction. A vacuum box having a plurality of communication chambers formed at appropriate intervals along the direction, and a vacuum generating means connected to each communication chamber of the vacuum box,
When the suction belt circulates between the rotors, the vacuum generator operates to hold the vacuum inside each recess of the suction belt that is in contact with the wall surface via the vacuum box, and the rotor drive drives the suction belt to circulate between the rotors to circulate. A non-return valve according to claim 1 at the bottom surface of each recess in the endless track of the suction belt in a suction transfer device for advancing along and transferring articles such as work equipment mounted on a machine frame. An adsorption transfer device characterized in that the body side is attached to the through hole side and attached. 4. A pair of rotors pivotally attached to the machine frame, and a plurality of recesses arranged at appropriate intervals along the length direction on the outer surface of the endless track wound between the rotors. A suction belt having a through hole that communicates the recess with the outside of the inner surface of the endless crawler belt on the bottom surface, and the suction belt attached to the machine frame in contact with the suction belt on the inner surface side along the length direction. A vacuum box in which a plurality of communication chambers are formed at appropriate intervals along the length direction, and a vacuum generating means connected to each communication chamber of the vacuum box. Occasionally, the vacuum generating means is operated to hold a vacuum in each recess of the suction belt that contacts the outer surface of the article via the vacuum box to suck the article on the outer surface of the suction belt and also the suction belt driven by the rotor. In a suction transfer device for transferring articles by circulating rotation between rotors, the non-return valve according to claim 1, wherein the check valve according to claim 1 is located in the endless crawler belt of the suction belt, with the soft plate side of the valve body positioned on the through hole side. An adsorption transfer device characterized by being installed at most.