JP2007085442A - Ball-type selector valve and starwheel device - Google Patents

Abstract

<P>PROBLEM TO BE SOLVED: To provide a ball-type selector valve with a simple structure capable of coping with high speed operation, and capable of preventing defective operation even when liquid intrudes into a valve. <P>SOLUTION: An inner peripheral surface 2a of a valve body 2 forms a seal surface exhibiting a sealing function among a plurality of balls and comprising an elastic member, a plurality of ports include a first port P1, and a second port P2 and a third port P3 separated from the first port and arranged on both sides of the first port so as to have the first port therebetween, and a plurality of the balls include a first sealing ball 3-1 reciprocating in a ball storage hole 2h and selectively communicating the first port and the second port or the first port and the third port, a second sealing ball 3-2 provided on one side of the first sealing ball and preventing the second port from being communicated with a space on the side opposite from the first port, and a third sealing ball 3-3 provided on the other side of the first sealing ball and preventing the third port from being communicated with a space on the side opposite from the first port. <P>COPYRIGHT: (C)2007,JPO&INPIT

Description

  The present invention relates to a ball-type switching valve and a star wheel device provided with the switching valve, and in particular, adsorbs a ball-type switching valve and a container that switch a flow path by reciprocating a plurality of adjacent balls. The present invention relates to a star wheel device that has a suction cup and can transport a large number of containers.

  A star wheel device is known as a device that holds a container such as a glass bottle or a plastic bottle and conveys it along a predetermined arc-shaped conveyance path. This star wheel device includes a star wheel having a plurality of pockets on the outer periphery into which the container fits, a suction cup provided in each pocket for sucking the side surface of the container, and the same number of suction cups as the vacuum cups provided to the suction cups. And a switching valve for appropriately switching the supply. As an example of handling a container with a star wheel device, there is one in which a container taken into a pocket of a star wheel is automatically inspected during transfer, and a defective product is adsorbed by a suction cup and removed from the line. In this case, the container is supplied to the star wheel by a transfer device such as a conveyor, is transferred into the pocket of the star wheel, and the container is inspected by the camera during the transfer. The non-defective product is returned to a conveying device such as a conveyor, and the defective product is sucked and transferred by a suction cup and discharged at a predetermined position. When the defective product is sucked, the suction cup is connected to the vacuum source by operating the switching valve.

  FIG. 5 is a longitudinal sectional view showing an example of a conventional star wheel device. As shown in FIG. 5, the star wheel device includes a star wheel 51 having a plurality of pockets 51 a on the outer periphery in which a container 21 such as a glass bottle fits, and a suction cup that is arranged for each pocket and sucks the trunk of the container 21. 52, a thick disc-shaped valve body 54 provided with a spool type switching valve 53 for appropriately switching the supply of vacuum to the suction cup 52, and a communication hole 55a communicating with a vacuum source (not shown). And a rotating shaft 55 provided inside. In this type of star wheel device, the star wheel 51 and the valve body 54 are respectively fixed to the rotary shaft 55 so as to rotate integrally with the rotary shaft 55. The same number of spool type switching valves 53 provided in the valve body 54 as the suction cups 52 are arranged, and the spool type switching valves 53 and the suction cups 52 are connected to each other via a pipe 56. A plurality of communication paths 54 a communicating with the respective switching valves 53 are formed radially inside the valve main body 54.

  The communication hole 55 a provided in the rotating shaft 55 opens at the contact surface between the rotating shaft 55 and the valve main body 54, and communicates with the plurality of communication paths 54 a provided in the valve main body 54. In this way, a vacuum path from the vacuum source to the suction cup 52 is formed. The spool type switching valve 53 includes a spool 53a provided in a spool hole 54s formed on the circumference of the valve body 54 so as to be movable up and down. An O-ring 59 for sealing is attached to the spool 53a. The spool type switching valve 53 is arranged at a predetermined interval on the same circumference in the vicinity of the outer periphery of the valve body 54. If the container 21 is defective, the air cylinder 58 disposed below the valve body 54 is actuated by the defective signal, and the spool 53a is pushed upward by the piston 58a of the air cylinder 58, so that the suction cup 52 Supply vacuum. The defective product (container 21) is vacuum-sucked by the suction cup 52 and transferred by the star wheel 51. When the suction cup 52 that sucks the defective product comes to the release position, the spool 53a is pushed down to return to the original position and the vacuum is shut off.

  6 (a) and 6 (b) are longitudinal sectional views showing another example of a conventional star wheel device. As shown in FIG. 6A, the star wheel device includes a star wheel 61 having a plurality of pockets 61a on the outer periphery in which the container 21 is fitted, and a suction cup 62 that is disposed for each pocket and sucks the trunk of the container 21. And a ball valve type switching valve 70 for appropriately switching the supply of vacuum to the suction cup 62, and a rotating body 64 that rotates integrally with the star wheel 61, and a communication hole that communicates with a vacuum source (not shown). 65 a is provided inside, and includes a fixed body 65 that is in sliding contact with the rotating body 64, and a rotating shaft 66.

  In this type of star wheel device, the star wheel 61 and the rotating body 64 are each fixed to the rotating shaft 66 so as to rotate integrally with the rotating shaft 66. The ball valve type switching valves 70 are arranged in the same number as the suction cups 62 and are attached to the side surfaces of the rotating body 64 made of a polyhedron. The ball valve switching valve 70 and the suction cup 62 are connected to each other via a pipe 68. As shown in FIG. 6B, the ball valve type switching valve 70 includes a valve main body 71, a spool 72 provided in the valve main body 71, and a seal member provided with O-rings 76 provided at both ends of the spool 72. 73, 73 and balls 74, 74 provided above and below the seal member 73. The ball 74 is held by a retainer 75 so as not to fall off. The spool 72 is not equipped with an O-ring, and the inner diameter of the valve body 71 and the outer diameter of the spool 72 are set to a small gap so that fluid does not leak.

  In order to supply a vacuum to the suction cup 62 by pushing up the ball 74 held by the retainer 75 to push up the spool 72 in the valve body 71 and connecting the suction cup 62 and a vacuum source at a predetermined position in the circumferential direction. The air cylinder 78 is provided. At other predetermined positions in the circumferential direction, there is provided a roller 79 for pushing down the ball 74 pushed up in the retainer 75 and returning the spool 72 to shut off the vacuum.

  When the container 21 is defective, the air cylinder 78 is actuated by the defective signal, the piston 78 a pushes up the ball 74 held by the retainer 75, pushes up the spool 72, and supplies vacuum to the suction cup 62. The defective product (container 21) is vacuum-sucked by the suction cup 62 and transferred by the star wheel 61. When the suction cup 62 that has sucked the defective product comes to the release position, the roller 79 is pushed down to push down the ball 74, the spool 72 is pushed down to return to the original position, and the vacuum is shut off.

  In the star wheel device provided with the above-described conventional spool type switching valve, when pushing up the spool by the piston of the air cylinder, if the pushing timing is shifted, an oblique force is applied to the spool and the spool is bent. There's a problem. In addition, it is necessary to push up the spool that rotates with the star wheel with the piston of the air cylinder. Therefore, when the star wheel is rotated at high speed, it is difficult to take the timing for the piston of the air cylinder to push the spool, making it difficult to handle high speed operation. There is a problem. Further, when the switching valve is operated, the O-ring attached to the spool passes through the hole of the port, so that the O-ring is damaged. Moreover, there is a problem that the distance that the O-ring passes through the hole of the port is long.

  On the other hand, in a star wheel device equipped with a ball valve type switching valve, since the container is filled with liquid such as beer, the liquid may be sucked when the container is adsorbed by the adsorption cup. The sucked liquid flows into the valve body, and this liquid is clogged (fixed) in the gap between the spool and the spool hole, so that the spool does not move smoothly and a malfunction occurs. In addition, there is a problem that the inside of the valve is corroded and rusted by the liquid that has entered the valve. Further, the ball valve switching valve has a problem that it is expensive because the valve body accommodated in the valve body is composed of three parts, that is, a spool and upper and lower seal members of the spool.

  The present invention has been made in view of the above circumstances, eliminates the need for a seal member such as an O-ring, can be used for high-speed operation, and does not cause malfunction even if liquid enters the valve. It is an object of the present invention to provide a ball-type switching valve that is simple and inexpensive and a star wheel device that includes the ball-type switching valve.

  In order to achieve the above-described object, a ball-type switching valve of the present invention has a valve body having a ball housing hole having a circular cross section and housing a plurality of balls, and a plurality of ports communicating with the ball housing hole, A plurality of balls arranged in a row in a reciprocating manner in the ball housing hole, and an inner peripheral surface of the valve body is a seal made of an elastic member having a sealing function with the plurality of balls The plurality of ports include a first port, and a second port and a third port provided on both sides of the first port so as to be spaced apart from the first port and sandwich the first port; A plurality of balls reciprocatingly moved within the ball receiving hole to selectively communicate the first port and the second port and the first port and the third port; One side of the ball for sealing A second sealing ball for preventing the second port from communicating with the space on the opposite side of the first port, and a third port on the other side of the first sealing ball and a space on the opposite side of the first port. And a third sealing ball for preventing communication.

  According to the present invention, the plurality of sealing balls are moved in one direction, the first sealing ball is brought into close contact with the sealing surface between the first port and the third port, and the second sealing ball is attached to the second port. The third sealing ball is placed in close contact with the sealing surface opposite to the sealing surface between the first port and the second port, and the third sealing ball is opposed to the sealing surface between the first port and the third port with the third port interposed therebetween. Close to the side sealing surface. In this case, the sealing surface between the first port and the second port is in a free state without contacting any of the sealing balls. Therefore, the first port and the second port communicate with each other via an annular communication path between two adjacent sealing balls. The third port includes a sealing surface between the first sealing ball and the first port and the third port, and a sealing surface between the first port and the third port across the third sealing ball and the third port. It is sealed by the sealing surface on the opposite side.

  The plurality of sealing balls are moved in opposite directions, the first sealing ball is brought into close contact with the sealing surface between the first port and the second port, and the second sealing ball is sandwiched between the second port and the first port. The third sealing ball is placed on the sealing surface opposite to the sealing surface between the first port and the third port across the third port. Close. The sealing surface between the first port and the third port is in a free state without contacting any of the sealing balls. Therefore, the first port and the third port communicate with each other via an annular communication path between two adjacent sealing balls. The second port includes a sealing surface between the first sealing ball and the first port and the second port, and a sealing surface between the first port and the second port across the second sealing ball and the second port. It is sealed by the sealing surface on the opposite side.

  As described above, according to the ball type switching valve of the present invention, the flow path for communicating the first port and the second port and the flow path for communicating the first port and the third port are used for a plurality of seals. Switching can be performed by reciprocating the ball.

In addition, two actuating balls for reciprocating the sealing ball are provided.
The whole valve body is made of an elastic member.
The elastic member is made of rubber.

  The star wheel device of the present invention is provided with a star wheel having a plurality of pockets on the circumference in which the container fits, a suction cup that is provided in each pocket and sucks the side surface of the container, and is provided in the same number as the suction cup and is connected to a vacuum source. The ball-type switching valve described above that switches the supply of vacuum to each suction cup is provided.

  According to the star wheel device of the present invention, since a small ball type switching valve can be used, a large number of ball type switching valves can be installed in a small space, and the number of pockets of the star wheel device can be increased. it can. Further, since the switching valve does not use a spool, it can cope with high speed operation of the star wheel.

According to the present invention, the effects listed below can be achieved.
(1) Since the inner peripheral surface of the ball housing hole of the valve body is made of an elastic member having a sealing function, and the plurality of balls housed in the ball housing hole are reciprocated, the flow path is switched. There is no need to use a seal member such as a ring, and there is no need to form a circumferential groove for mounting the seal member on the valve body. Therefore, it is possible to reduce the material cost and the processing cost of the valve body. Further, since the circumferential groove is unnecessary, it is not necessary to increase the dimensional accuracy of the valve body, and the manufacturing cost can be reduced in terms of processing accuracy. Furthermore, since a spool is not used, high speed operation can be supported.
(2) Since the inner peripheral surface of the ball housing hole of the valve body is made of an elastic member having a sealing function, the flow path is switched by reciprocating a plurality of balls housed in the ball housing hole. Even if liquid enters inside, it does not cause malfunction.

(3) A switching valve can be constituted by a valve body made of an elastic member having an inner peripheral surface of the ball housing hole having a sealing function and a plurality of balls provided in a reciprocating manner in the ball housing hole of the valve body. Therefore, it is possible to provide a ball switching valve that has a simple structure, is inexpensive, and is small.
(4) Since the ports are connected and disconnected at the contact portion between the sealing ball and the inner peripheral surface of the ball housing hole of the valve body, it is not necessary to make the ball positioning accuracy during operation high.
(5) Since a small ball type switching valve can be used, a large number of ball type switching valves can be installed in a small space, and the number of pockets of the star wheel device can be increased. Further, since the switching valve does not use a spool, it can cope with high speed operation of the star wheel.

Hereinafter, an embodiment of a ball type switching valve according to the present invention will be described with reference to FIGS. 1 and 2.
FIG. 1 is a cross-sectional view showing a ball type switching valve according to an embodiment of the present invention. As shown in FIG. 1, the ball-type switching valve 1 includes a valve body 2 having a circular ball housing hole 2h therein, and a plurality of (3 in the embodiment) housed in the ball housing holes 2h in the valve body 2. ) Sealing balls 3-1, 3-2 and 3-3. In this embodiment, the sealing balls 3-1, 3-2, and 3-3 use standard products, and are processed with a nominal diameter of 7 mm and an accuracy of ± 0.01 mm.

  The inner peripheral surface 2a of the valve body 2 is made of an elastic member such as rubber, and the inner peripheral surface 2a of the valve body 2 is between the sealing balls 3-1, 3-2 and 3-3. 2s of sealing surfaces which have a sealing function are comprised. In the present embodiment, the entire valve body 2 is made of rubber, and as the type of rubber, for example, general industrial rubber such as nitrile rubber (NBR), chloroprene rubber (CR), etc. may be used. it can. Urethane rubber and silicon rubber are not suitable for this embodiment because of insufficient strength. The rubber hardness of the valve body 2 is preferably 40 to 50 Shore hardness, the diameter of the inner peripheral surface 2a of the valve body 2 is 7 mm in diameter, and the sealing ball 3 with an accuracy of -0.1 mm to -0.2 mm. Processed slightly smaller than -1, 3-2 and 3-3.

  A substantially cylindrical retainer 5 is fixed to the upper and lower ends of the valve body 2, and an operation ball 6-1 for reciprocating the sealing balls 3-1, 3-2 and 3-3 in the retainer 5. 6-2. The retainer 5 has an open end 5a having an inner diameter smaller than the outer diameter of the operation balls 6-1 and 6-2 so that the operation balls 6-1 and 6-2 are not dropped from the retainer 5. The valve body 2 has a first port P1 at the center, and has a second port P2 and a third port P3 so as to be spaced apart from the first port P1 and sandwich the first port P1. Each port P1, P2, P3 communicates with the ball housing hole 2h.

  The sealing ball 3-1 constitutes a first sealing ball, and reciprocates in the ball receiving hole 2h to connect the first port P1 and the second port P2, and the first port P1 and the third port P3. Can be selectively communicated. Further, the sealing ball 3-2 constitutes a second sealing ball, and the second sealing ball 3-2 prevents the second port P2 from communicating with the space S1 on the opposite side of the first port P1. ing. Further, the sealing ball 3-3 constitutes a third sealing ball, and the third sealing ball 3-3 prevents the third port P3 from communicating with the space S2 on the opposite side of the first port P1. ing.

  In the embodiment shown in FIG. 1, the entire valve body 2 is made of rubber. However, the valve body 2 is made of rubber by a predetermined thickness from the inner circumferential surface 2a of the valve body 2, and the outer circumferential surface 2b of the valve body 2 is made of metal or the like. You may comprise with the cylindrical body which has the rigidity of.

2 (a) and 2 (b) are operation explanatory views of the ball type switching valve shown in FIG.
As shown in FIG. 2A, the actuating ball 6-1 is pushed up by the push-up roller 10, and the sealing balls 3-1, 3-2, 3-3 and the actuating ball 6-2 are moved in the A direction (upward). ) To switch the flow path. 2B, the push-down roller 11 pushes down the actuating ball 6-2 so that the sealing balls 3-1, 3-2, 3-3 and the actuating ball 6-1 are moved to B. Move in the direction (downward) to switch the flow path.

  1) In the state shown in FIG. 2A, the first sealing ball 3-1 is in close contact with the sealing surface 2s-2 between the first port P1 and the third port P3, and the second sealing ball 3-2. Is in close contact with the seal surface 2s-3 below the second port P2, and the third sealing ball 3-3 is in close contact with the seal surface 2s-4 above the third port P3. The seal surface 2s-1 between the first port P1 and the second port P2 is in a free state without contacting any of the sealing balls. Therefore, the first port P1 and the second port P2 communicate with each other via the annular first communication passage F1 having a substantially triangular cross section between the two adjacent sealing balls 3-1 and 3-2. The third port P3 is sealed by the first sealing ball 3-1 and the sealing surface 2s-2, and the third sealing ball 3-3 and the sealing surface 2s-4.

  2) In the state shown in FIG. 2B, the first sealing ball 3-1 is in close contact with the sealing surface 2s-1 between the first port P1 and the second port P2, and the second sealing ball 3-2. Is in close contact with the seal surface 2s-3 below the second port, and the third sealing ball 3-3 is in close contact with the seal surface 2s-4 above the third port P3. The sealing surface 2s-2 between the first port P1 and the third port P3 is in a free state without contacting any of the sealing balls. Accordingly, the first port P1 and the third port P3 communicate with each other via the annular second communication path F2 having a substantially triangular cross section between the two adjacent sealing balls 3-1 and 3-3. The second port P2 is sealed by the first sealing ball 3-1 and the sealing surface 2s-1, and the second sealing ball 3-2 and the sealing surface 2s-3.

  As described above, according to the ball type switching valve shown in FIGS. 1, 2A, and 2B, the flow path for communicating the first port P1 and the second port P2, and the first port P1 Can be switched by reciprocating up and down the sealing balls 3-1, 3-2 and 3-3.

Next, a star wheel device incorporating the ball type switching valve of the present invention will be described.
FIG. 3 is a plan view showing the overall configuration of a container inspection apparatus using a star wheel device incorporating the ball type switching valve of the present invention. Containers 21 such as glass bottles are supplied to the star wheel 31 of the star wheel device 30 by the conveyor 22 and transferred into the pockets 31a of the star wheel 31 and transferred. For example, the mouth of the container 21 is a camera in the middle of the transfer. Inspected by The non-defective product is returned to the downstream side of the conveyor 22, and the defective product is sucked by a suction cup (described later) and transferred to the discharge turntable 25. Reference numeral 26 denotes a belt that engages with the body of the container 21.

  FIG. 4 is a longitudinal sectional view of the star wheel device of the present invention. The star wheel device 30 includes a main shaft 32 connected to a motor (not shown), a star wheel 31 having a plurality of pockets 31a on the circumference in which the container 21 is fitted, and a side surface of the container 21 provided in each pocket 31a. A suction cup 33 for suction and a support member 34 that is fixed to the main shaft 32 and supports the lower surface of the star wheel 31 are provided. The star wheel device 30 is fixed to the star wheel 31 and has an annular member 35 having communication paths 35 a, 35 b, and 35 c inside, and a plate-like shape positioned below the annular member 35 and fixed to the main shaft 32. And a member 36. Further, the same number of switching valves 1 as the suction cups 33 are fixed to the outer peripheral surface of the annular member 35. The switching valve 1 is composed of a ball type switching valve shown in FIGS. 1 and 2.

  The same number of first communication paths 35 a as the suction cups 33 formed in the annular member 35 open to the upper surface of the annular member 35 and open to the outer peripheral surface, and communicate with the first port P 1 of the ball type switching valve 1. Yes. The same number of second communication paths 35b as the suction cups 33 formed in the annular member 35 open to the lower surface of the annular member 35 and open to the outer peripheral surface, and communicate with the second port P2 of the ball type switching valve 1. Yes. The same number of third communication paths 35c as the suction cups 33 formed in the annular member 35 open to the lower surface of the annular member 35 and open to the outer peripheral surface, and communicate with the third port P3 of the ball type switching valve 1. Yes. Each first communication path 35 a is connected to each suction cup 33 via a pipe 37. Each second communication path 35 b is communicated with a vacuum source (not shown) via a communication path 36 a in the plate-like member 36 and a communication path 32 a in the main shaft 32. Furthermore, the lower end of the third communication path 35c is open to the atmosphere.

  Further, a push-up roller 10 is fixed below the ball-type switching valve 1 at a predetermined position in the circumferential direction of a housing-like fixing portion 38 that rotatably supports the main shaft 32, and by this push-up roller 10, The ball for operation 6-1 of the ball type switching valve 1 can be pushed up. Further, an inverted L-shaped support 39 is fixed at a predetermined position in the circumferential direction of the fixing portion 38, and the operation ball 6-2 of the ball type switching valve 1 is pushed down to the upper end of the support 39. A push-down roller 11 is fixed.

Next, the operation of the star wheel device configured as described above will be described.
When the main shaft 32 is rotated by the motor, the annular member 35 holding the star wheel 31 and the ball type switching valve 1 rotates integrally. As the main shaft 32 rotates, the container 21 is taken into the pocket 31 a of the star wheel 31 at a predetermined position and the side surface of the container 21 is adsorbed by the adsorption cup 33. That is, as shown in FIG. 2 (a), the push-up roller 10 pushes up the operation ball 6-1 of the ball type switching valve 1, and the sealing balls 3-1, 3-2, 3-3 and the operation balls. By moving 6-2 in the A direction, the suction cup 33 is connected to the pipe 37, the first communication path 35a, the first port P1, the first communication path F1, the second port P2, the second communication path 35b, and a plate shape. The member 36 is connected to a vacuum source via a communication path 36 a of the member 36 and a communication path 32 a of the main shaft 32.

  When the container 21 is transported to a predetermined position along the arc-shaped transport path while being held by the star wheel 31 and the suction cup 33, the push-down roller 11 is moved to the ball type switching valve as shown in FIG. The suction cup 33 is connected to the pipe 37 by moving the sealing balls 3-1, 3-2 and 3-3 and the working balls 6-1 in the direction B by pushing down the first working ball 6-2. The first communication path 35a, the first port P1, the second communication path F2, the third port P3, and the third communication path 35c communicate with the atmosphere. Accordingly, the vacuum suction of the container 21 by the suction cup 33 is released, and the container 21 is discharged from the star wheel device 30.

FIG. 1 is a cross-sectional view showing a ball type switching valve according to an embodiment of the present invention. 2 (a) and 2 (b) are operation explanatory views of the ball type switching valve shown in FIG. FIG. 3 is a plan view showing the overall configuration of a container inspection apparatus using a star wheel device incorporating the ball type switching valve of the present invention. FIG. 4 is a longitudinal sectional view of the star wheel device of the present invention. FIG. 5 is a longitudinal sectional view showing an example of a conventional star wheel device. 6 (a) and 6 (b) are longitudinal sectional views showing another example of a conventional star wheel device.

Explanation of symbols

DESCRIPTION OF SYMBOLS 1 Ball type | mold switching valve 2 Valve body 2a Inner peripheral surface 2h Ball accommodation hole 2s-1, 2s-2, 2s-3, 2s-4 Sealing surface 3-1, 3-2, 3-3 Sealing ball 5,75 Retainer 5a Open end 6-1, 6-2 Operation ball 10 Push-up roller 11 Push-down roller 21 Container 22 Conveyor 25 Discharge turntable 26 Belt 30 Star wheel device 31, 51, 61 Star wheel 31a, 51a, 61a Pocket 32 Spindle 32a, 35a, 35b, 35c, 36a, 54a Communication path 33, 52, 62 Suction cup 34 Support member 35 Annular member 36 Plate member 37, 56 Piping 38 Fixing part 39 Support 53 Switching valve 53a Spool valve 54s Spool hole 55, 66 Rotating shaft 55a, 65a Communication hole 58, 78 Air cylinder 58 , 78a Piston 59,76 O-ring 64 rotating body 65 fixed body 70 Ball valve type switch valve 72 spool 74 ball 79 roller F1, F2 communicating passage P1, P2, P3 port S1, S2 space

Claims (5)

A valve main body having a ball housing hole having a circular cross section for housing a plurality of balls, and a plurality of ports communicating with the ball housing holes;
A plurality of balls provided in a reciprocating manner in the ball housing hole and arranged in a row,
The inner peripheral surface of the valve body constitutes a sealing surface made of an elastic member having a sealing function with the plurality of balls,
The plurality of ports include a first port, and a second port and a third port provided on both sides of the first port so as to sandwich the first port apart from the first port,
A plurality of balls reciprocatingly moved within the ball receiving hole to selectively communicate the first port and the second port and the first port and the third port; A second sealing ball on one side of the first sealing ball that prevents the second port from communicating with the space on the opposite side of the first port; and a third port on the other side of the first sealing ball. A ball-type switching valve comprising: a third sealing ball that prevents communication with a space on the opposite side of one port.   2. The ball type switching valve according to claim 1, further comprising two actuating balls for reciprocating the sealing ball.   The ball type switching valve according to claim 1, wherein the entire valve body is made of an elastic member.   The ball-type switching valve according to claim 1, wherein the elastic member is made of rubber. A star wheel that has multiple pockets on the circumference, where the container fits,
A suction cup that is provided in each pocket and sucks the side of the container;
The star wheel device comprising the ball type switching valve according to any one of claims 1 to 4, wherein the ball type switching valve is provided in the same number as the suction cups and connected to a vacuum source to switch the vacuum supply to each suction cup. .

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