JP2013039943A - Container transfer device - Google Patents

Abstract

PROBLEM TO BE SOLVED: To suppress wear of a bushing at a rotating part and suppress labor and cost for maintenance.SOLUTION: If pressing force or tensile force acts from a cam part 201 and a spring 80 of a cam 15 and an opening increasing device 17 for opening/closing a gripper 20, moment due to the pressing force or the tensile force acts mainly to a slide bushing 60 through a shaft member 90 and does not almost act to a shaft member 91. In addition, since the slide bushing 60 is also disposed on a centerline of the gripper 20, an eccentric load is hardly acted. Further, the slide bushing 60 is positioned at an inner circumferential side end 20b which is most separated from an outer circumferential side end 20a of the gripper 20 holding a container 100.

Description

  The present invention relates to a container transport device used for a beverage filling device or the like for filling a beverage such as a PET bottle.

  2. Description of the Related Art Conventional container transport devices such as PET bottles are known in which a plurality of grippers are attached to the outer periphery of a rotatable rotating body, and the containers are gripped and rotated by the grippers.

  As shown in FIG. 9, such a gripper 301 is opened and closed when a cam roller 302 provided on the gripper 301 side comes into contact with a cam plate provided on the fixed portion side of the container transport device. It has become. That is, when the gripper 301 attached to the rotating body rotates together with the rotating body, when the cam roller 302 contacts the cam plate, the cam roller 302 is displaced inward and outward of the rotating body according to the outer peripheral shape of the cam plate. Thus, when the gripper 301 is opened and the cam roller 302 is detached from the cam plate, the gripper 301 is closed by an urging force such as a spring (see, for example, Patent Document 1).

  Here, the gripper 301 is pivotable about the shaft 307 to be opened and closed by connecting a plurality of link plates 306 with the shaft 307 so as to be rotatable. In the connecting portion by the shaft 307, a cylindrical bush 308 made of resin or the like is mounted between the hole formed in the link plate 306 and the shaft 307.

JP 2006-315715 A

However, the gripper 301 as described above has the following problems.
Since the container transport device used in a beverage filling machine or the like is continuously operated at a high speed, the gripper 301 repeats opening and closing operations many times. Then, the bush 308 is worn, and the wear powder may be generated.
It is not preferable in terms of quality that such wear powder is mixed in the container. For this reason, it is preferable to arrange the bush 308 at a position as far as possible from the container held by the outer peripheral side end portion 301 a of the gripper 301. However, since the gripper 301 is provided so as to protrude (overhang) from the rotating body toward the outer peripheral side, the outer peripheral side end portion 301a of the gripper 301 protruding from the rotating body to the outer peripheral side is provided on the shaft 307. A moment in the downward direction acts. The more the shaft 307 is arranged on the inner peripheral side end 301b side of the gripper 301, the larger this moment becomes.
Therefore, in the configuration described in Patent Document 1, the shaft 307 is disposed near the middle between the outer peripheral end 301a and the inner peripheral end 301b of the gripper 301, but this makes the bush 308 closer to the container. The possibility of contamination of wear powder into the container has increased.
Therefore, in order to reliably prevent the wear powder from being mixed into the container, the bush 308 must be inspected and replaced at an appropriate timing, which takes time and cost.
The present invention has been made on the basis of such a technical problem, and an object of the present invention is to provide a container transport device that can suppress wear of a bush of a portion and can reduce maintenance labor and cost.

The container transport device of the present invention, which has been made for this purpose, includes a disk-shaped rotating body, a rotating shaft that rotatably supports the rotating body in a horizontal plane, and a circumferential interval between the outer peripheral portions of the rotating body. A plurality of grippers that are spaced apart and can hold the container, and a cam that is fixed to the rotating shaft and opens and closes the gripper are provided. The gripper can be opened and closed by a first support shaft fixedly provided on the rotating body and a pair of first arm members rotatably provided on the first support shaft. A gripper arm portion having a holding portion for holding the container at one end portion of the arm member, and a radiation connecting the inner peripheral side and the outer peripheral side of the rotating body provided on the inner peripheral side of the rotating body with respect to the first support shaft. A long hole having a longitudinal direction in the direction, a slide bush accommodated in the long hole and slidable in the longitudinal direction, a second support shaft supported by the slide bush, and a pair of second arm members One end is rotatably provided on the second support shaft, the other end is rotatably connected to the other end of the first arm member, and the second support shaft is provided with a cam. A roller member facing the outer peripheral surface of the roller.
In such a configuration, the long hole is provided inside the rotating body with respect to the first support shaft, and the second support shaft and the roller member are provided on the slide bush that is slidable along the long hole. . Therefore, the second support shaft can be provided in the gripper so as to be positioned on the innermost peripheral side of the rotating body. As a result, the slide bush can be arranged in the gripper at a position farthest from the container holding portion located on the outer peripheral side of the rotating body.

  In such a gripper, the second support shaft is preferably disposed at the center in the width direction of the gripper.

In addition, a protrusion or groove continuous in the circumferential direction of the elongated hole is formed on the inner peripheral surface of the elongated hole, and the outer peripheral surface of the slide bush has a cross-sectional shape that meshes with the elongated protrusion or the groove. You can also. Thereby, the slide of a slide bush can be guided reliably.
Here, the protrusion or the groove may have any shape, but may have an inclined surface inclined with respect to the axial direction of the second support shaft, and the slide bush may be engaged with the inclined surface. If it does in this way, when pressing a roller member for opening and closing of a gripper, the force which acts on a slide bush can be certainly transmitted to an elongate hole side via an inclined surface.

  The slide bush may have any configuration, but is formed by combining a first bush member assembled from above the elongated hole and a second bush member assembled from below the elongated hole. You can also.

  At this time, if the frictional resistance of the surface of the ridge or groove is made different between the one side and the other side across the slide bush, when the slide bush advances and retreats along the elongated hole, The slide bush rotates due to the difference in friction on the other side. Thereby, it can suppress that the whole circumferential direction of a slide bush wears equally, and wears only a specific site | part.

  When the slide bush rotates in this way, it is preferable that the slide bush is provided with a rotation direction regulating member that rotates only in one direction around the second support shaft and prevents rotation in the opposite direction.

By the way, if a phase difference occurs in the operation with another device that delivers the container to and from the gripper of the rotating body, there is a possibility that the container cannot be reliably held by the gripper. Therefore, it is preferable to further include a gripper opening increasing mechanism that opens the gripper with an opening larger than the maximum opening of the gripper by the cam when a phase difference or the like occurs.
At this time, the second support member may be provided with a second roller member, and the gripper opening increasing mechanism may include a pressing member that advances and retreats in the radial direction of the rotating body with respect to the second roller member. .

According to the present invention, the long hole is provided inside the rotating body with respect to the first support shaft, and the second support shaft and the roller member are provided on the slide bush that is slidable along the long hole. Therefore, the second support shaft can be provided in the gripper so as to be positioned on the innermost peripheral side of the rotating body. As a result, the slide bush can be arranged in the gripper at a position farthest from the container holding portion located on the outer peripheral side of the rotating body.
When a pressing force or tensile force is applied to the cam or the second support shaft to open or close the gripper, the moment due to the pressing force or tensile force mainly acts on the slide bush via the second support shaft. It has little effect on the other parts of the gripper. Therefore, wear of each part other than the slide bush can be suppressed.
In this way, it is possible to suppress wear of the bush of the rotating part and reduce maintenance labor and cost.

It is a figure which shows an example of the whole layout of the drink filling apparatus in this Embodiment. It is a top view of a container conveyance apparatus. It is an elevation view of a container conveyance apparatus. It is a side view of a gripper. It is the top view and side sectional view of a gripper. It is a top view which shows the opening / closing operation | movement of a gripper. It is an elevational view showing a gripper opening increasing mechanism. It is a figure which shows the other example of a gripper. It is a top view of the conventional gripper.

Hereinafter, the present invention will be described in detail based on embodiments shown in the accompanying drawings.
As shown in FIG. 1, a PET bottle beverage filling apparatus includes a rinser 1 for washing an empty container (not shown), a filler 2 for filling a beverage washed with the rinser 1, and a cap filled with a beverage. Is mainly provided.
A container is supplied to the rinser 1 from a carry-in conveyor (not shown) via a rinser carry-in wheel 5i. The container cleaned with the rinser 1 is unloaded by the rinser unloading wheel 5o, supplied to the filler 2 via the relay wheel 6 and the filler loading wheel 7i. The container filled with the beverage with the filler 2 is unloaded by the filler unloading / capper loading wheel 7o and supplied to the capper 3, and the container with the cap attached is unloaded via the kappa unloading wheel 9o to an unillustrated unloading conveyor. It has come to be.

  The rinser 1, filler 2, and capper 3 receive one container conveyed by the rinser carry-in wheel 5 i and the filler carry-in wheel 7 i one by one while rotating, and during the rotary conveyance, empty containers are washed and into the container. The beverage is filled and the cap is attached to the container.

Further, the rinser carry-in wheel 5i, the rinser carry-out wheel 5o, the filler carry-in wheel 7i, the filler carry-out / capper carry-in wheel 7o, and the capper carry-out wheel 9o rotate while the containers for the rinser 1, filler 2, relay wheel 6, and capper 3, respectively. Delivery and receipt.
Here, the structure of the rinser carry-in wheel 5i, the rinser carry-out wheel 5o, the filler carry-in wheel 7i, the filler carry-out / capper carry-in wheel 7o, and the capper carry-out wheel 9o will be described. The rinser carry-in wheel 5i, the rinser carry-out wheel 5o, the relay wheel 6, the filler carry-in wheel 7i, the filler carry-out / capper carry-in wheel 7o, and the capper carry-out wheel 9o have basically the same configuration. The carry-in wheel 7i will be described as an example. Of course, the same configuration can be applied to the rinser carry-in wheel 5i, the rinser carry-out wheel 5o, the relay wheel 6, the filler carry-in wheel 7i, the filler carry-out / capper carry-in wheel 7o, the capper carry-out wheel 9o, and the like.

As shown in FIGS. 2 and 3, in the present embodiment, the filler carry-in wheel 7 i includes a cylindrical fixed shaft 10 having a hollow portion and a rotating body 11 that is rotatably supported by the fixed shaft 10. I have.
The rotating body 11 includes a rotating shaft 12 inserted into the hollow portion of the fixed shaft 10 and a rotating disk 13 attached to the upper side surface of the rotating shaft 12. A plurality of grippers 20 for gripping the container 100 are provided on the outer periphery of the rotating disk 13 at equal intervals in the circumferential direction.

  As shown in FIGS. 4 and 5, each gripper 20 includes a bracket plate 30 fixed to the outer peripheral portion of the rotating disk 13 of the rotating body 11, and a base side link plate (second second plate) attached to the bracket plate 30. Arm members, drive arm portions) 40A, 40B and distal end side link plates (first arm members, gripper arm portions) 50A, 50B, slide bushes 60, guide rollers (roller members) 71 and guide rollers (second rollers) Roller member) 72 and a spring 80.

The bracket plate 30 is provided on the lower surface of the outer peripheral portion of the rotating disk 13 with an inner peripheral end 30 a fixed by bolts 25, 25 and an outer peripheral end 30 b overhanging from the rotating disc 13 to the outer peripheral side. It has been.
A through hole 31 is formed in the outer peripheral side end 30 b of the bracket plate 30.
Further, in the bracket plate 30, the radial direction of the rotating disk 13 (the direction connecting the inner peripheral end 30a and the outer peripheral end 30b) at the intermediate portion between the inner peripheral end 30a and the outer peripheral end 30b. A long hole 32 having a constant length is formed in the first and second holes. On the inner peripheral surface of the elongated hole 32, a ridge 32a that is continuous in the circumferential direction is formed at an intermediate portion in the vertical direction, and inclined surfaces 32b and 32c are formed at the upper and lower sides thereof.

  The base side link plates 40A and 40B have an oval shape having a fixed length, and through holes 41 and 42 are formed at both ends thereof, respectively. These base part side link plates 40A and 40B are arranged on the lower side of the bracket plate 30 in a state of being vertically stacked.

  The front end portion side link plates 50A and 50B are formed with through holes 51 and 52 at one end portion 50c and an intermediate portion 50d. Further, an arcuate portion 53 having a curvature matching the outer diameter of the neck portion of the container 100 is formed at the other end portion 50e of the distal end portion side link plates 50A, 50B. Here, the tip end side link plates 50A, 50B are arranged on the lower side of the bracket plate 30 from the one end portion 50c where the through hole 51 is formed to the intermediate portion 50d where the through hole 52 is formed. The other end 50e formed with the arc-shaped portion 53 is provided so as to protrude from the bracket plate 30 to the outer peripheral side. Further, the distal end side link plates 50A and 50B are bent at the intermediate portion 50d, and are formed so that the other end portion 50e extends in a direction inclined with respect to the direction connecting the through holes 51 and the centers of the through holes 52. ing.

  The slide bush 60 has a disk shape having a thickness equivalent to the thickness of the bracket plate 30, and a groove 62 having a cross-sectional shape that meshes with the protrusion 32 a of the elongated hole 32 is formed on the outer peripheral portion thereof.

The slide bush 60 has a vertically divided structure in the thickness direction, and includes a lower bush member (second bush member) 63 and an upper bush member (first bush member) 64.
The lower bushing member 63 has an inclined surface 65 that forms the lower half of the groove 62 on the outer periphery thereof. The inclined surface 65 is formed in parallel to the inclined surface 32 c that forms the protrusion 32 a of the elongated hole 32. A through hole 63a is formed at the center of the lower bush member 63, and a convex portion 66 having a circular cross section protruding upward is formed on the upper surface on the outer peripheral side thereof.

  The upper bush member 64 has an inclined surface 67 that forms the upper half of the groove 62 on the outer periphery thereof. The inclined surface 67 is formed in parallel to the inclined surface 32 b that forms the protrusion 32 a of the elongated hole 32. A through hole 64a is formed at the center of the upper bush member 64, and a concave section 68 having a circular cross section that engages with the convex section 66 is formed on the lower surface on the outer peripheral side thereof.

The lower bush member 63 and the upper bush member 64 form a slide bush 60 by fitting the convex portion 66 and the concave portion 68 from above and below the elongated hole 32 of the bracket plate 30.
A cylindrical sleeve 69 is press-fitted into the through holes 63a and 64a.
Such a slide bush 60 is disposed in the elongated hole 32 and is slidable along the longitudinal direction of the elongated hole 32 by engaging the protrusions 32a and the grooves 62 on both sides.

  Each of the guide rollers 71 and 72 has a disk shape having a certain thickness, and through holes 73 and 74 are formed at the center thereof.

The base side link plates 40A and 40B, the tip end side link plates 50A and 50B, the slide bush 60, and the guide rollers 71 and 72 are, with respect to the bracket plate 30, a shaft member (second support shaft) 90 and a shaft member (first One support shaft) 91.
More specifically, the shaft member 90 is inserted into the through holes 63a and 64a of the slide bush 60, the through holes 41 of the base side link plates 40A and 40B, the through holes 73 of the guide rollers 71, and the through holes 74 of the guide rollers 72, By screwing a nut 93 into a thread groove formed at the tip thereof, these are rotatably connected.
Further, the shaft member 91 is inserted into the through hole 31 of the bracket plate 30 and the through holes 52 of the front end side link plates 50A and 50B, and the nut 94 is screwed into the thread groove formed at the front end thereof, thereby the bracket plate 30. On the other hand, the tip end side link plates 50A and 50B are rotatably connected.
Further, connecting pins 95 are respectively inserted into the through holes 42 of the base side link plates 40A and 40B and the through holes 51 of the front end side link plates 50A and 50B, and these are rotatably connected.

Further, in the base side link plates 40A and 40B, the connecting plate 81 is sandwiched between the end portions on the side where the through holes 41 are formed. A through hole 81a is formed in the connecting plate 81, and the shaft member 90 is inserted into the through hole 81a. One end of the spring 80 is connected to the connecting plate 81. As shown in FIG. 4, the other end of the spring 80 is fixed to the bracket plate 30 via a mounting bolt 83.
The spring 80 is provided so as to exert a tensile force in a direction in which the mounting bolt 83 and the connecting plate 81 are brought close to each other. Thereby, the gripper 20 is urged | biased in the direction which closes a container holding part.

  As shown in FIG. 3, a cam 15 is provided below the rotating disk 13 in order to open and close such a gripper 20. The cam 15 is plate-shaped and is fixed to the fixed shaft 10 so that its outer peripheral surface faces the guide roller 71. The cam 15 is provided in a region (angle range) where the gripper 20 remains open. As shown in FIG. 6A, in the region where the gripper 20 is closed, the gripper 20 is located on the inner peripheral side of the rotating disk 13 with respect to the guide roller 71, and in the region where the gripper 20 is opened as shown in FIG. The guide roller 71 is formed in a shape that opens the container holding portion of the gripper 20 by pressing and moving the guide roller 71 toward the outer peripheral side of the rotating disk 13.

Further, as shown in FIG. 6C, an opening degree increasing device for increasing the opening degree of the gripper 20 than when the cam 15 is opened and closed is provided below the cam 15. As shown in FIG. 7, the opening degree increasing device (gripper opening degree increasing mechanism) 17 supports a cam part 201 formed in an arc shape and the cam part 201 so as to freely advance and retract in the radial direction of the rotating disk 13. And a drive mechanism 203 that drives the guide rail 202 to move forward and backward in the radial direction of the rotating disk 13.
The drive mechanism 203 can have any configuration. For example, one end is connected to the drive cylinder 204 provided to be vertically extendable and the rod 204a of the drive cylinder 204, and the other end is connected to the guide rail 202. It can be set as the structure provided with the connected arm 205 made. Here, the intermediate portion 205a of the connecting arm 205 is supported by the fixed shaft 10 via the bracket 206 so as to be rotatable in a vertical plane.
When the drive cylinder 204 is expanded and contracted, the connecting arm 205 swings about the intermediate portion 205 a, whereby the guide rail 202 is driven to advance and retract in the radial direction of the rotating disk 13. Thereby, the cam part 201 advances and retreats in the radial direction of the rotating disk 13.
Here, in the normal state, the cam portion 201 is positioned on the inner peripheral side of the rotating disk 13 with respect to the guide roller 72, and when the opening degree of the gripper 20 is increased, the cam portion 201 is moved to the position shown in FIG. As shown in FIG. 2, the gripper 20 is moved to the outer peripheral side with respect to the cam 15 in the opening region. Then, the guide roller 72 is pressed to the outer peripheral side by the cam portion 201, and the opening degree of the gripper 20 can be increased as compared with when the guide roller 72 is opened by the cam 15.

In the gripper 20 as described above, when the container holding portion of the gripper 20 is opened by pressing force or tensile force from the cam 15, the cam portion 201 of the opening increasing device 17, or the spring 80 to open and close the gripper 20. The moment due to the pressing force or tensile force mainly acts on the slide bush 60 via the shaft member 90 and hardly acts on the shaft member 91 or other portions. Therefore, wear of each part other than the slide bush 60 can be suppressed. In addition, since the slide bush 60 is also disposed on the center line in the width direction of the gripper 20, an uneven load is hardly applied and the slide bush 60 is not easily worn. In this way, it is possible to reduce maintenance labor and costs.
Further, the slide bush 60 is located at the inner peripheral end 20 b farthest from the outer peripheral end 20 a of the gripper 20 that holds the container 100. Therefore, even if wear powder is generated from the slide bush 60, the layout is difficult to mix in the container 100.

  Further, a groove 62 is formed on the outer peripheral surface of the slide bush 60 and is configured to mesh with the protrusion 32 a of the elongated hole 32. Thereby, when the guide rollers 71 and 72 are pressed to the outer peripheral side by the cam 15 or the cam portion 201, a moment force in the direction in which the outer peripheral end 20 a of the gripper 20 is lifted is applied to the slide bush 60. Then, the force is received by the inclined surface 65 of the lower bush member 63 of the slide bush 60. On the other hand, when the shaft member 90 is pulled toward the inner peripheral side by the spring 80, a moment force is applied to the slide bush 60 in a direction in which the outer peripheral side end portion 20 a of the gripper 20 is lowered. Then, the force is received by the inclined surface 67 of the upper bush member 64 of the slide bush 60. Therefore, when the gripper 20 is opened or closed, the acting force can be reliably transmitted to the bracket plate 30 by the slide bush 60. Thereby, the operation | movement part of the gripper 20 can be hold | maintained reliably and the operation | movement at the time of opening and closing can be made stable. In addition, since the acting force can be received by surface contact (line contact) between the inclined surfaces 65 and 67 and the inclined surfaces 32b and 32c of the protrusion 32a of the elongated hole 32, the slide bush 60 is also less likely to be worn and durable. Excellent.

Furthermore, such a slide bush 60 has a vertically divided structure of a lower bush member 63 and an upper bush member 64. When assembled to the elongated hole 32 having the protrusion 32a, the slide bush 60 is viewed from above and below the bracket plate 30. Since the lower bushing member 63 and the upper bushing member 64 may be brought close to each other and combined with each other, the assemblability is excellent.
In addition, since the lower bushing member 63 and the upper bushing member 64 are formed with a convex portion 66 and a concave portion 68, the slide bush 60 can be assembled accurately and reliably by fitting them together.

In addition, since the opening degree increasing device 17 for increasing the opening degree of the gripper 20 is provided, the gripper 20 is opened by the cam 15 by pressing the guide roller 72 to the outer peripheral side by the cam portion 201. Rather, the opening degree of the gripper 20 can be increased. Therefore, for example, when the phase shift occurs in the rotation operation of the filler carry-in wheel 7i and the other container transfer devices positioned before and after the filler carry-in wheel 7i, the gripper 20 is operated by operating the opening increasing device 17. It is possible to increase the opening of the container 100 and reliably deliver the container 100.
Since such an opening degree increasing device 17 may be additionally provided, it can be additionally provided for existing facilities.

[Other Embodiments]
By the way, in the said embodiment, when the slide bush 60 slides along the long hole 32, the slide bush 60 does not necessarily rotate with the shaft member 90. FIG. Then, it is conceivable that only specific portions in the circumferential direction of the inclined surfaces 65 and 67 of the slide bush 60 are in contact with the inclined surfaces 32b and 32c of the protrusion 32a of the elongated hole 32. As a result, there is a possibility that only the contact portion will be worn out, and therefore, for example, it is preferable to adopt the following configuration.

  First, as shown in FIG. 5A, in the long hole 32, the friction coefficients of the inclined surfaces 32b and 32c are made different between one side S1 and the other side S2 facing each other with the slide bush 60 interposed therebetween. be able to. For example, the surface roughness of the inclined surfaces 32b and 32c can be made different between the one side S1 and the other side S2 of the elongated hole 32. As a specific example, the surface roughness of one side S1 is 1.6S, and the surface roughness of the other side S2 is 0.8S. Then, in the slide bush 60, the friction force on the inclined surfaces 32b and 32c on the one side S1 is larger than the friction force on the other side S2, so that the slide bush 60 advances and retreats along the elongated hole 32. When doing so, the slide bush 60 rotates.

  In this way, in the slide bush 60, a wider angle range comes into contact with the protrusion 32a of the elongated hole 32, and wear of a specific portion can be suppressed. Thereby, the effect of the said embodiment becomes still more remarkable.

  Furthermore, in addition to the above configuration, as shown in FIG. 8, a so-called ratchet mechanism (rotation direction regulating member) 210 that allows the slide bush 60 to rotate only in one direction and restricts rotation in the opposite direction is provided. It can also be provided. For this purpose, gear teeth 211 continuous in the circumferential direction are formed on the lower surface of the slide bush 60. On the upper surface of the base side link plate 40 </ b> A facing the slide bush 60, an engagement member 212 protruding upward and a spring member 213 for biasing the engagement member 212 upward are provided. Here, the gear teeth 211 and the meshing member 212 are inclined so that they do not mesh with each other when the slide bush 60 rotates in one direction and mesh with each other when rotated in the opposite direction.

  With such a configuration, as described above, in the long hole 32, the slide bush 60 has the long hole 32 due to the difference in friction coefficient between the one side S <b> 1 and the other side S <b> 2 facing each other with the slide bush 60 interposed therebetween. Is allowed to rotate when the slide bush 60 rotates in one direction, and when the slide bush 60 moves in the opposite direction along the elongated hole 32 and attempts to rotate in the opposite direction, the rotation is restricted. . Therefore, every time the gripper 20 opens and closes, the slide bush 60 rotates in one direction by a certain angle. As a result, the slide bush 60 contacts uniformly over the entire circumference, and wear of a specific portion can be suppressed. Thereby, the effect of the said embodiment becomes still more remarkable.

  In the above embodiment, the configuration of each part of the gripper 20 has been described. However, the configuration described in the above embodiment may be selected or changed to another configuration as long as it does not depart from the gist of the present invention. Is possible.

5i Rincer carry-in wheel 5o Rincer carry-out wheel 6 Relay wheel 7i Filler carry-in wheel 7o Filler carry-out / capper carry-in wheel 9o Capper carry-out wheel 10 Fixed shaft 11 Rotating body 12 Rotating shaft 13 Rotating disk 15 Cam 17 Opening increase device (gripper opening Increase mechanism)
20 Gripper 25 Bolt 30 Bracket plate 31 Through hole 32 Long hole 32a Projection 32b Inclined surface 32c Inclined surface 40A, 40B Base side link plate (second arm member, drive arm portion)
50A, 50B Front end side link plate (first arm member, gripper arm)
50c One end portion 50d Intermediate portion 50e The other end portion 60 Slide bush 62 Groove 63 Lower bush member (second bush member)
64 Upper bush member (first bush member)
65, 67 Inclined surface 66 Convex part 68 Concave part 69 Sleeve 71 Guide roller (roller member)
72 Guide roller (second roller member)
80 Spring 81 Connecting plate 83 Mounting bolt 90 Shaft member (second support shaft)
91 Shaft member (first support shaft)
DESCRIPTION OF SYMBOLS 100 Container 201 Cam part 202 Guide rail 203 Drive mechanism 204 Drive cylinder 205 Connection arm 206 Bracket 210 Ratchet mechanism (rotation direction regulating member)
211 gear teeth 212 meshing member 213 spring member

Claims (10)

A disk-shaped rotating body;
A rotating shaft that rotatably supports the rotating body in a horizontal plane;
A plurality of grippers provided on the outer periphery of the rotating body at intervals in the circumferential direction, and capable of holding a container;
A cam fixed to the rotating shaft and opening and closing the gripper,
The gripper is
A first support shaft fixedly provided on the rotating body;
A gripper arm having a holding portion for holding the container at one end of the first arm member, wherein a pair of first arm members are rotatably provided on the first support shaft. And
An elongated hole provided on the inner peripheral side of the rotating body with respect to the first support shaft and having a longitudinal direction in a radial direction connecting the inner peripheral side and the outer peripheral side of the rotating body;
A slide bush accommodated in the elongated hole and slidable in the longitudinal direction;
A second support shaft supported by the slide bush;
One end of a pair of second arm members is provided rotatably on the second support shaft, and the other end is rotatably connected to the other end of the first arm member;
A roller member provided on the second support shaft and facing an outer peripheral surface of the cam;
A container conveying device comprising:   2. The container transport device according to claim 1, wherein the second support shaft is provided in the gripper so as to be positioned on an innermost side of the rotating body.   3. The container transport device according to claim 1, wherein the second support shaft is disposed at a center in a width direction of the gripper.   A protrusion or groove continuous in the circumferential direction of the elongated hole is formed on the inner peripheral surface of the elongated hole, and the outer peripheral surface of the slide bush has a cross-sectional shape that meshes with the elongated protrusion or the groove. The container transport device according to any one of claims 1 to 3, wherein   5. The container transport device according to claim 4, wherein the protrusion or the groove has an inclined surface inclined with respect to an axial direction of the second support shaft, and the slide bush is engaged with the inclined surface. .   The slide bush has a vertically split structure, and is formed by combining a first bush member assembled from above the elongated hole and a second bush member assembled from below the elongated hole. The container transport device according to claim 4 or 5.   The container conveying device according to any one of claims 4 to 6, wherein the frictional resistance of the surface of the protrusion or groove is different between one side and the other side across the slide bush. .   The container transport device according to claim 7, wherein the slide bush includes a rotation direction regulating member that rotates in only one direction around the second support shaft and prevents rotation in the opposite direction. .   The container transport device according to any one of claims 1 to 8, further comprising a gripper opening increasing mechanism that opens the gripper with an opening larger than a maximum opening of the gripper by the cam. A second roller member is provided on the second support member;
10. The container transport according to claim 1, wherein the gripper opening increasing mechanism includes a pressing member that advances and retreats in a radial direction of the rotating body with respect to the second roller member. apparatus.

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