JP5466523B2 - Container dispensing device - Google Patents

Description

  The present invention relates to a container dispensing apparatus that supplies containers one by one from a transport conveyor in a liquid filling apparatus.

  A rotary filling device is used as a device for filling a container such as a PET bottle with a liquid such as drinking water. This rotary filling device is provided with a plurality of filling valves on the outer peripheral portion of a rotating circular wheel. While the wheel is rotated almost once and the container is conveyed in the circumferential direction, the filling valve is moved into the container. Fill in. Then, after filling the container, the cap is attached to the container by a capper (plugging machine).

In order to supply empty containers one by one to such a filling apparatus, a supply conveyor is provided on the upstream side (previous process side). The supply conveyor conveys the containers in a line and feeds them one by one to the wheel of the filling device. The wheel is provided with a gripper that holds the mouth portion of the container, holds the mouth portion of the container discharged from the supply conveyor, and conveys it to the filling device.
Conventionally, as shown in FIG. 9, a screw 2 having a spiral groove on the outer peripheral surface has been frequently used in the supply conveyor 1 (see, for example, Patent Document 1). The screw 2 accommodates the container 100 in the recess 3a formed on the outer peripheral surface by the spiral groove 3, and rotates the screw 2 with a motor, thereby the container along the guide rail 4 provided to face the screw 2. Is to carry. And in the front-end | tip part of the supply conveyor 1, the container 100 is hold | maintained one by one with the gripper by the side of a filling device, and is received.

JP 2004-115206 A

  In recent years, a single filling device has been used to fill a plurality of types of containers 100 with liquid. When the capacity of the container 100 is different, the outer diameter of the container 100 is also different. For this reason, one type of screw 2 cannot convey all containers 100 having different outer diameters. When the screw 2 having the groove 3 matched to the small outer diameter container 100 is used to transport the large outer diameter container 100, the container does not fit in the groove 3 (recess 3 a), and the container 100 is connected to the guide rail 4. Can not be transported. For example, if the screw 2 having the groove 3 matched to the container 100 having a large outer diameter is used to transport the container 100 having a small outer diameter, the container 100 rattles inside the groove 3, and the container 100 is stably supplied. May not be transported. Therefore, the screw 2 having the groove 3 of an appropriate size is prepared for each capacity and type of the container 100, and the screw 2 is exchanged according to the capacity and type of the container 100 filled with the liquid. In addition, as shown in FIG. 10, it may be necessary to vary the number of installed screws 2 according to the capacity of the container 100. For example, in the case of a container having a small capacity as shown in FIG. 10A, only one stage of the screw 2 is provided, and in the case of a container 100 having a large capacity and a high height as shown in FIG. 10B. Is provided with screws 2 and 2 in two upper and lower stages.

However, this takes time to change the setup between production lots, and hinders the improvement of production efficiency. Moreover, since it is necessary to prepare a screw according to the capacity | capacitance and kind of the container 100, an installation cost also rises.
The present invention has been made based on such a technical problem, and can stably transport containers regardless of the capacity and type of containers, and can improve production efficiency at low cost. An object is to provide a payout device.

The container dispensing apparatus according to the present invention made for this purpose is arranged on both sides of the conveyance direction in order to define the conveyance direction of the container, and holds a flange portion provided on the container to arrange a plurality of containers. A pair of guide members that are conveyed, a nozzle that blows gas in a direction along the conveyance direction with respect to the container guided by the guide members, and a pair of guide members that are rotatable about an axis parallel to the axis of the container. A first rotation in which a plurality of first convex portions projecting outward are provided at intervals in the circumferential direction at positions facing the mouth formed above the flange portion in the container held by the guide member A second convex portion projecting outward is provided in a circumferential direction at a position facing the mouth portion of the container and held by a pair of guide members, and is rotatable about an axis parallel to the body and the axis of the container. A plurality were provided at intervals. Comprising second rotating body, and a controller for controlling the rotation of the first rotary member and the second rotating body. Then, the controller rotates the first rotating body, causes the first convex portion to protrude between the pair of guide members, and abuts the first convex portion against the mouth portion of the container, thereby Movement along the guide member and movement along the guide member of the first row of containers are possible by rotating the first rotating body and retracting the first convex portion from between the pair of guide members. And the other first convex portion adjacent to the rear side in the rotation direction of the first rotating body is protruded between the pair of guide members to prevent movement of the rear container along the guide member. Operation and rotation of the second rotating body, the second convex part protrudes between the pair of guide members and abuts against the mouth of the container, so that the first convex part retracts and can move Moving the foremost row of containers along the guide member, Characterized in that to execute the rotating body and the second rotating body.
In this way, the containers can be dispensed one by one by the rotation of the first rotating body. Moreover, the container discharged | paved out from the 1st rotary body can be conveyed by a 2nd rotary body to a post process.
Here, a 1st rotary body and a 2nd rotary body push the mouth part of a container with a 1st convex part and a 2nd convex part. In PET bottles and the like, the diameter of the mouth is standardized according to the standard. Therefore, it is not necessary to replace the first rotating body and the second rotating body according to the capacity and type of the container.
In addition, when the first rotating body is rotated to retract the first convex portion from between the pair of guide members, the nozzle can be moved along the guide members of the first row of containers. The containers in the front row were pressed in the transport direction by the rear containers moved in the transport direction by the gas blown. As a result, not only the rotation operation of the first rotating body, but also the first row of containers is pushed by the rear container pushed in the transport direction by the gas blown from the nozzle. And can be prevented from rubbing strongly.

  Moreover, the 1st suppression member which opposes the opening part of the container from which a movement is blocked | prevented by a 1st convex part from upper direction, and suppresses that a container inclines can be further provided in the vicinity of a 1st rotary body. In addition, the second rotating body may be provided with a second restraining member that faces the mouth portion of the container that is pushed and conveyed by the second convex portion from above and suppresses the container from tilting.

  When the first convex portion is retracted from between the pair of guide members to enable movement along the guide members of the first row of containers, the containers arranged behind the first rotating body It is also preferable to further include a second nozzle for blowing gas. Thereby, the container can be reliably pushed out toward the first rotating body.

  In such a container dispensing device, the controller can continuously rotate the first rotating body and the second rotating body at a constant speed. Further, the controller may intermittently rotate the first rotating body by an angle corresponding to the installation interval of the first convex portion.

According to the present invention, the first rotating body and the second rotating body perform the dispensing operation of the container by hitting the mouth of the container by the first projecting part and the second projecting part. Accordingly, it is not necessary to replace the first rotating body and the second rotating body, and the production efficiency can be increased. Moreover, since the rotation of the first rotating body and the second rotating body is only controlled by the controller and does not have any more complicated mechanism, the above effect can be obtained at low cost. it can.
Further, when only the first row of containers is dispensed by rotating the first rotating body, not only the rotating operation of the first rotating body but also the rear container pushed in the transport direction by the gas blown from the nozzle. Since the front row of containers is pushed, it is possible to prevent the first rotating body and the mouth of the front row of containers from being rubbed strongly. Therefore, the container can be prevented from being rubbed or damaged.

It is a figure which shows the whole schematic structure of the drink filling equipment to which the container dispensing apparatus in this Embodiment is applied. It is a top view of a container dispensing apparatus. It is sectional drawing of the direction orthogonal to the direction where a guide rail continues. It is an enlarged plan view of a portion where a payout rotor is provided. It is a perspective view of a portion provided with a payout rotor. It is a perspective view of a container dispensing apparatus. It is a top view of a delivery wheel. It is a perspective view of the part which delivers a container with a delivery wheel. It is a top view which shows the screw conventionally used. It is sectional drawing which shows the example which provided the screw which changes according to the magnitude | size of a container.

Hereinafter, the present invention will be described in detail based on embodiments shown in the accompanying drawings.
FIG. 1 is a diagram showing an overall schematic configuration of a beverage filling facility to which a container dispensing device according to the present embodiment is applied.
In the beverage filling facility, a sterilization process in which sterilization apparatus 10 sterilizes the supplied container by spraying sterilizing liquid or electron beam irradiation, a rinsing process in which rinsing water is rinsed in rinsing apparatus 20, and a container in filling apparatus 30. The container is filled with a beverage by sequentially performing a filling process for filling the container with a liquid and a capping process for attaching a cap to the container filled with the liquid in the capper 40. In addition, a container is conveyed by the star wheel 50 or the conveyance conveyor 60 between the apparatuses which mutually follow.

Now, the conveyance conveyor 60 has the following configuration.
As shown in FIG. 2, the transport conveyor 60 includes a pair of guide rails (guide members) 61 and 61. As shown in FIG. 3, the guide rails 61 and 61 are provided in parallel to each other at an interval smaller than the outer diameter of the flange portion 102 provided in the mouth portion 101 of the container 100 and projecting to the outer peripheral side. The container 100 is held by the conveyor 60 with the flange portion 102 placed on the guide rails 61 and 61.
Air blow nozzles (nozzles) 62 are provided along the guide rails 61 and 61 at appropriate intervals. The air blow nozzle 62 is connected to a compressor or a factory air supply source, and ejects air in one direction from a nozzle hole at the tip thereof. Such an air blow nozzle 62 ejects air in the vicinity of the guide rails 61, 61 along a direction in which the guide rails 61, 61 are continuous or a direction slightly inward. Accordingly, the container 100 held by the flange portion 102 is conveyed along the guide rails 61 and 61.

The transport conveyor 60 delivers the transported container 100 to the star wheel 50 at its tip. Therefore, a delivery mechanism 70 for the container 100 is provided at the front end of the conveyor 60.
The delivery mechanism 70 includes a payout rotor (first rotary body) 71 and a delivery wheel (second rotary body) 72.

The payout rotor 71 is provided above the one guide rail 61 so as to be rotatable around the vertical axis.
As shown in FIG. 4, the payout rotor 71 has a disk shape, and a plurality of concave portions 73 are formed on the outer peripheral portion thereof at equal intervals in the circumferential direction. The concave portion 73 is formed by a curved surface 74 having a predetermined radius of curvature that is concave on the center side of the payout rotor 71. The curved surface 74 is formed such that one end side 74 a thereof is along the radial direction of the payout rotor 71. Further, a convex portion (first convex portion) 75 having a predetermined curvature radius that is convex on the outer peripheral side of the payout rotor 71 is continuously formed on the other end side 74 b of the curved surface 74.

As shown in FIG. 3, the payout rotor 71 has a curved surface 74 of the concave portion 73 installed at a height facing the mouth portion 101 of the container 100 in which the flange portion 102 is held by the guide rails 61 and 61. Yes.
Further, as shown in FIG. 4, the payout rotor 71 is provided such that the convex portion 75 protrudes inward of the guide rails 61 and 61. In a state where the convex portion 75 protrudes inside the guide rails 61, 61, the one end side 74 a of the curved surface 74 is formed so as to face the direction facing the conveyance direction of the container 100. In this state, the projecting dimension of the convex portion 75 from the guide rail 61 is set to be equal to or smaller than the radius of the mouth portion 101 of the container 100.

Here, the payout rotor 71 is rotationally driven around the vertical axis by a motor (not shown). The operation of the motor is controlled by the controller 80.
As shown in FIGS. 4 to 6, the container 100 that has been conveyed by air blow along the guide rails 61, 61 has its mouth in a state where the convex portion 75 protrudes inward from the guide rails 61, 61. The portion 101 hits one end side 74a of the curved surface 74, and the conveyance of the container 100 is stopped. Then, when the motor is operated under the control of the controller 80, the payout rotor 71 is rotationally driven around the vertical axis. Then, the convex part 75 which protruded inside the guide rails 61 and 61 moves in the conveyance direction of the container 100 and retracts outside from the inner space of the guide rails 61 and 61. At the same time, the dammed container 100 is advanced along the guide rails 61 and 61 by being pushed by the air blow from the air blow nozzle 62 and another container 100 arranged immediately thereafter. At this time, due to the further rotation of the dispensing rotor 71, the convex portion 75 adjacent to the rear side in the rotational direction protrudes to the inside of the guide rails 61 and 61, whereby the immediately following container 100 is blocked by the convex portion 75.

  In this manner, the payout rotor 71 is continuously rotated at a constant speed under the control of the controller 80, or a constant angle (an angle corresponding to the installation interval in the circumferential direction of the convex portion 75) at regular intervals. By rotating intermittently, the containers 100 can be dispensed one by one at regular intervals.

  As shown in FIG. 6, the delivery wheel 72 is provided at a position facing the payout rotor 71 with the guide rails 61 and 61 therebetween. As shown in FIG. 7, the delivery wheel 72 includes a disk-shaped rotating body 76 and a pressing plate (second pressing member) 77 provided on the outer peripheral portion of the rotating body 76 at equal intervals in the circumferential direction. doing.

  Concave portions 78 are formed in the outer peripheral portion of the rotating body 76 at equal intervals in the circumferential direction. The concave portion 78 is formed by a curved surface 79 having a predetermined radius of curvature that is concave on the center side of the delivery wheel 72. The curved surface 79 is formed so that one end side 79 a thereof is along the radial direction of the delivery wheel 72. Further, the other end 79 b of the curved surface 79 is formed continuously with a convex portion (second convex portion) 81 having a predetermined curvature radius that is convex on the outer peripheral side of the delivery wheel 72.

As shown in FIG. 3, in the delivery wheel 72, the convex portion 81 is installed at a height facing the mouth portion 101 of the container 100 in which the flange portion 102 is held by the guide rails 61 and 61.
And as shown in FIG. 4, the delivery wheel 72 is provided so that the convex part 81 which is a part protrudes to the inner side rather than the guide rails 61 and 61. As shown in FIG. One end side 79 a of the curved surface 79 is formed to face the conveying direction of the container 100 in a state where the convex portion 81 protrudes inward from the guide rails 61 and 61. Further, in this state, the protruding dimension of the convex portion 81 from the guide rail 61 is set to be equal to or smaller than the radius of the mouth portion 101 of the container 100.

  The rotating body 76 is provided on a base (not shown) so as to be rotatable around a vertical axis and is driven to rotate by a motor. Here, the operation of the motor is controlled by the controller 80 so that the rotating body 76 rotates in synchronization with (in conjunction with) the delivery rotor 71.

As shown in FIG. 7, the holding plate 77 is provided so as to protrude from the rotating body 76 to the outer peripheral side so as to cover the upper portion of the recess 78. In FIG. 7, the holding plate 77 is provided at only one place, but the holding plate 77 is provided at a position corresponding to each recess 78.
As shown in FIG. 3, the holding plate 77 covers the upper portion of the concave portion 78 with a small interval at the upper edge portion of the mouth portion 101 of the container 100 held by the flange portion 102 on the guide rails 61 and 61. It is installed at a height that is opposed to each other. Here, the holding plate 77 is formed to be inclined so that its height gradually increases as the distance from the convex portion 81 increases. Even when the container 100 is inclined when receiving the container 100 in the concave portion 78, I try not to interfere.

  In such a delivery wheel 72, the rotation of the rotating body 76 is automatically controlled in accordance with the timing at which the container is delivered from the dispensing rotor 71. As a result, the one end side 79 a of the curved surface 79 pushes the mouth portion 101 of the container 100 from the rear side in the transport direction of the container 100 that moves along the guide rails 61 and 61. At this time, as shown in FIG. 8, the upper portion of the mouth portion 101 of the container 100 received in the recess 78 is covered with the restraining plate 77. Thereby, it can suppress that the container 100 inclines.

  In this way, the container 100 delivered from the delivery rotor 71 at equal intervals is pushed from behind by the delivery wheel 72 and is conveyed along the guide rails 61 and 61.

The container 100 conveyed along the guide rails 61 and 61 is delivered to the star wheel 50 at a predetermined position.
The star wheel 50 is disposed on the opposite side of the delivery wheel 72 with the guide rails 61 and 61 interposed therebetween. The star wheel 50 includes a rotating body 51 that is rotationally driven by a motor (not shown) around a vertical axis, and grippers 52 that are provided on the outer peripheral portion of the rotating body 51 at equal intervals in the circumferential direction.
Here, the gripper 52 may have any configuration, but in the present embodiment, the gripper 52 includes a pair of gripper members 53A and 53B, and one gripper member 53A radiates from the rotating body 51. The other gripper member 53B is fixed so as to extend in the direction, and the base end portion of the gripper member 53B is rotatably connected to the rotating body 51, and the cam follower 54 provided at the rear end of the grip member 53B is displaced along the cam 55. Rotate with. In this way, the front end side of the gripper members 53A and 53B can be freely opened and closed. And the container 100 is hold | maintained by grasping the opening | mouth part 101 with the front-end | tip part of gripper member 53A, 53B.

The star wheel 50 is rotationally driven by a motor (not shown). Here, the operation of the motor is controlled by the controller 80, and the star wheel 50 rotates in synchronization with (in conjunction with) the delivery wheel 72.
As shown in FIG. 5, by the rotation of the rotating body 51, the gripper 52 sandwiches the container 100 that is pushed from the rear by the delivery wheel 72 and is conveyed along the guide rails 61, 61 at the mouth portion 101. Hold. As shown in FIG. 2, the container held by the gripper 52 is detached from the guide rails 61 and 61 by the rotation of the rotating body 51, and is conveyed to the subsequent process as the rotating body 51 turns.

According to the above-described configuration, the container 100 conveyed along the guide rails 61 and 61 by air blow can be dispensed by the dispensing rotor 71 and the delivery wheel 72 at an equal pitch. Accordingly, the containers 100 can be delivered and delivered one by one to the gripper 52 of the star wheel 50 without using a screw.
At this time, the payout rotor 71 and the delivery wheel 72 respectively face the mouth portion 101 of the container 100. In PET bottles, the size of the mouth portion 101 of the container 100 is standardized regardless of the type and capacity of the container 100, so that various types of containers 100 can be stabilized with only the dispensing rotor 71 and the delivery wheel 72. Can be paid out. Therefore, regardless of the type and capacity of the container 100, it is not necessary to change the configuration for paying out the container 100 even if the lot changes, and the above effects can be obtained at low cost and the production efficiency can be improved. .

  During the dispensing operation by the dispensing rotor 71, the dispensing rotor 71 contacts the mouth portion 101 of the container 100, but the container 100 to be dispensed by the dispensing rotor 71 is rearward by the rear container 100 that is pressed in the transport direction by air blow. Is pressed from. Accordingly, the container 100 is not discharged only by the discharge rotor 71, but the curved surface 74 of the discharge rotor 71 and the mouth portion 101 of the container 100 can be prevented from being strongly pressed, and the mouth portion 101 of the container 100 is damaged. Hard to stick.

  Further, the mouth portion 101 of the container 100 that is paid out by the delivery wheel 72 and conveyed along the guide rails 61 and 61 is restrained by the restraining plate 77, and the container 100 can be prevented from falling down. Thereby, it is possible to prevent the container 100 from falling or being damaged.

[Modification]
In addition, the structure shown by the said embodiment can be changed suitably.
For example, as shown in FIG. 8, a restraining plate (first restraining member) 90 may be provided above the payout rotor 71 by a stay (not shown). Thereby, the inclination of the container 100 when the container 100 is discharged by the discharge rotor 71 is suppressed, and the stability of the conveyance of the container 100 can be enhanced.

  In addition, as shown in FIG. 8, an air blow nozzle (second nozzle) 95 that ejects air toward the conveyance direction of the container 100 may be provided on the upstream side of the dispensing rotor 71. Thereby, the container 100 can be reliably pushed out toward the discharge rotor 71. At this time, since the outer diameter of the container 100 is large, even if the pitch of the container 100 conveyed along the guide rails 61 and 61 is large, the container 100 is stabilized by blowing air from the air blow nozzle 95. And can be extruded at an equal pitch. Thereby, the containers 100 arranged behind the containers 100 to be dispensed from the dispensing rotor 71 can be reliably pushed out.

In addition, in the said embodiment, although the whole structure of the drink filling equipment was demonstrated, the structure is not restricted to what was mentioned above, It is possible to change suitably. For example, an electron beam sterilization apparatus that performs sterilization by irradiating an electron beam can also be used as the sterilization apparatus 10. In this case, in place of the rinsing device 20, foreign matter or the like in the container 100 is removed by air blowing.
In addition to this, as long as it does not depart from the gist of the present invention, the configuration described in the above embodiment can be selected or changed to another configuration as appropriate.

  DESCRIPTION OF SYMBOLS 50 ... Star wheel, 51 ... Rotating body, 52 ... Gripper, 60 ... Conveyor, 61 ... Guide rail (guide member), 62 ... Air blow nozzle (nozzle), 70 ... Delivery mechanism, 71 ... Discharge rotor (first rotation) Body), 72 ... delivery wheel (second rotary body), 73 ... concave part, 74 ... curved surface, 74a ... one end side, 74b ... other end side, 75 ... convex part (first convex part), 76 ... rotation Body, 77 ... plate (second pressing member), 78 ... concave part, 79 ... curved surface, 79a ... one end side, 79b ... other end side, 80 ... controller, 81 ... convex part (second convex part), 90 ... Plate (first pressing member), 95 ... Air blow nozzle (second nozzle), 100 ... Container, 101 ... Mouth part, 102 ... Flange part

Claims (7)

A pair of guide members arranged on both sides of the transport direction to hold the flanges provided on the container and transport the arrayed containers, in order to define the transport direction of the containers;
A nozzle that blows gas in a direction along the transport direction with respect to the container guided by the guide member;
In the container held rotatably by a pair of the guide members provided so as to be rotatable around an axis parallel to the axis of the container, the container protrudes outward at a position facing the mouth formed above the flange part. A first rotating body provided with a plurality of first convex portions spaced apart in the circumferential direction;
A second protrusion projecting outward is provided in a circumferential direction at a position facing the mouth of the container, which is rotatably provided about an axis parallel to the axis of the container and is held by a pair of guide members. A plurality of second rotating bodies provided at intervals,
A controller for controlling the rotation operation of the first rotating body and the second rotating body;
With
The controller rotates the first rotating body to project the first convex portion between the pair of guide members, and abuts the first convex portion against the mouth of the container. Preventing movement of the front row of containers along the guide member;
By rotating the first rotating body and retracting the first convex portion from between a pair of the guide members, the front row of containers can be moved along the guide members, and An operation of projecting the other first convex portion adjacent to the rear side in the rotational direction of the first rotating body between the pair of guide members to prevent movement of the rear container along the guide members; ,
By rotating the second rotating body, projecting the second convex portion between the pair of guide members and hitting the mouth of the container, the first convex portion is retracted. An operation of moving the containers in the forefront row that are in a movable state along the guide member;
The container dispensing apparatus, wherein the first rotating body and the second rotating body are executed.   When the first rotating body is rotated so that the first convex portion is retracted from between the pair of guide members, so that the movement of the containers in the forefront row along the guide members is enabled. The container dispensing apparatus according to claim 1, wherein the container in the foremost row is pressed in the transport direction by the rear container moved in the transport direction by the gas blown from the nozzle.   A first restraining member is further provided in the vicinity of the first rotating body so as to face the mouth portion of the container that is prevented from moving by the first convex portion from above and to prevent the container from tilting. The container dispensing apparatus according to claim 1, wherein the container dispensing apparatus is a container dispensing apparatus.   The second rotating member is further provided with a second restraining member that faces the mouth portion of the container that is pushed and conveyed by the second convex portion from above and prevents the container from tilting. The container dispensing device according to any one of claims 1 to 3, wherein the container dispensing device is provided.   When the first convex portion is retracted from between the pair of guide members to move the frontmost row of the containers along the guide members, the rear side of the first rotating body The container dispensing apparatus according to any one of claims 1 to 4, further comprising a second nozzle that blows gas onto the containers arranged side by side.   6. The container dispensing apparatus according to claim 1, wherein the controller continuously rotates the first rotating body and the second rotating body at a constant speed. .   6. The controller according to claim 1, wherein the controller rotates the first rotating body intermittently by an angle corresponding to an installation interval of the first convex portion. Container dispensing device.

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