JP2000072245A - Clamp type container conveying apparatus - Google Patents

Abstract

PROBLEM TO BE SOLVED: To increase the design flexibility of a conveying apparatus having a plurality of delivering positions in comparison with conventional ones. SOLUTION: This clamp type container conveying apparatus 1 involves an engaging means 100 delivering a container selectively at the first delivering position on the upstream side from the second delivering position. The engaging means 100 is provided with a second oscillating lever 110 interlocked with a forth shaft part 104 (driving shaft) so as to be positioned at a different position from the position of a first oscillating lever of a cam mechanism, a second cam follower 111 mounted on the front end of the second oscillating lever 110, and a movable cam member 113 which is mounted on the first delivering position B, relatively-moves in the radial direction and is connected/disconnected to/from the first cam follower. The movable cam member 113 engages with the first com follower to prevent the container from being delivered when positioned at the outside in the radial direction, while it is disconnected from the cam follower to deliver the container when positioned at the inside in the radial direction.

Description

DETAILED DESCRIPTION OF THE INVENTION

[0001]

BACKGROUND OF THE INVENTION 1. Field of the Invention The present invention relates to a clamp-type container transfer device for holding and transferring a container with a pair of clamp arms, and more particularly to a plurality of discharge positions for selectively switching the discharge positions. The present invention relates to a clamp-type container transport device.

[0002]

2. Description of the Related Art Heretofore, as a clamp-type container transfer device having a plurality of discharge positions and selectively switching the discharge position, a rotating member rotatably provided on a frame and a rotatable member provided on the rotating member are provided. A pair of clamp arms that grip and transport the container, a drive shaft that opens and closes these clamp arms, and a cam mechanism that opens the clamp arms at predetermined supply and discharge positions. A drive shaft rotatably supported by the rotating body to open and close the clamp arm, a swing lever attached to the drive shaft, a cam follower provided on the swing lever, and a phase position identical to a predetermined supply position A first opening cam that engages with the cam follower to open the clamp arm and grip the container; and a first opening cam downstream of the supply position.
A second opening cam, which is disposed at the discharging position and engages with the cam follower to open the clamp arm and discharge the container; and positioning the second opening cam radially outward to apply an opening force to the clamp arm. And a drive mechanism for displacing the second opening cam inward in the radial direction when necessary so as not to apply an opening force to the clamp arm, and a second discharge position downstream of the first discharge position. And a third opening cam that is disposed at the same phase position as the above and engages the cam follower to open the clamp arm and discharge the container that has not been discharged at the first discharging position. JP-B-58-16992). In the clamp-type container transfer device disclosed in this publication, the container can be selectively discharged at the first discharge position by moving the second opening cam forward and backward in the radial direction by the drive mechanism.

[0003]

However, in the clamp-type container conveying device disclosed in the above publication, the second opening cam is provided at the same height position as the other first opening cam and the third opening cam so as to engage with the cam follower. I have to do
Accordingly, the place where the drive mechanism for driving the second opening cam is provided is also limited at the same time, so that there is a disadvantage that the degree of freedom in design is low. The present invention has been made in view of such circumstances, and provides a clamp-type container transfer device having a higher degree of freedom in design than in the past.

[0004]

According to the first aspect of the present invention, there is provided a rotating body rotatably provided on a frame, and a pair of clamp arms provided on the rotating body so as to be openable and closable for gripping and transporting a container. A drive shaft for opening and closing these clamp arms, and a cam mechanism for opening the clamp arm between a predetermined supply position and a discharge position. The cam mechanism includes a cam member and a first shaft provided on the drive shaft. In a clamp-type container transfer device including a swing lever and a first cam follower provided on the first swing lever and engaged with a cam surface of the cam member, the clamp-type container conveying device includes a swing lever between the supply position and the discharge position. An engaging means for selectively engaging the drive shaft is provided, and a position where the engaging means is provided is defined as a first discharge position by a cam mechanism, and the discharge position downstream from the cam mechanism is a second discharge position. age The engagement means includes: a second swing lever interlocked with a drive shaft at a position different from that of the first swing lever; a second cam follower provided at a tip of the second swing lever; A movable cam member provided at a discharge position and relatively moving in a radial direction, the movable cam member closing a clamp arm when engaged with the second cam follower to prevent discharge of the container. ,
When the container is separated from the second cam follower, the clamp arm is allowed to open and the container is discharged. Further, in the invention of claim 2, a rotating body rotatably provided on the frame, a pair of clamp arms provided to be openable and closable on the rotating body, and holding and transporting the container,
A drive shaft for opening and closing these clamp arms, and a cam mechanism for opening the clamp arm between predetermined supply positions and discharge positions, the cam mechanism includes a cam member and a first swing provided on the drive shaft. In the clamp-type container transfer device provided with a lever and a first cam follower provided on the first swinging lever and engaged with a cam surface of the cam member, the driving mechanism is provided between the supply position and the discharge position. An engaging means for selectively engaging the shaft is provided, and a position where the engaging means is provided is defined as a first discharging position by the engaging means, and the discharging position downstream of the engaging means is a second discharging position. A second swing lever interlocked with a drive shaft at a position different from that of the first swing lever;
A second cam follower provided at the tip of the swing lever, and a movable cam member provided at the first discharge position and relatively moving in the radial direction, the movable cam member comprising:
When engaging the second cam follower, the clamp arm is opened to discharge the container, and when separated from the second cam follower, the clamp arm is allowed to close to prevent the container from being discharged. Is what it is.

[0005]

According to the first aspect of the present invention, the engagement means for preventing the discharge of the container at the first discharge position can be provided at any position without being restricted by the cam mechanism. The degree of freedom of design can be increased as compared with the related art in which the second opening cam as the first opening cam and the third opening cam as the cam mechanism had to be provided at the same height position. According to the configuration of the second aspect, the engagement means for discharging the container at the first discharge position can be provided at a free position without being restricted by the cam mechanism. The degree of freedom in design can be increased as compared with the related art in which the cam must be provided at the same height position as the first opening cam and the third opening cam as the cam mechanism.

[0006]

DESCRIPTION OF THE PREFERRED EMBODIMENTS The present invention will be described below with reference to the illustrated embodiment. In FIG. 1, a container cleaned and sterilized by a rotary cleaning device 1 is provided with a rotary filling machine 2 installed downstream thereof.
After the content liquid is filled in the above-mentioned manner, it is sequentially gripped by the pair of clamp arms 6A, 6B of the clamp-type container transport device 5 of the present invention at a predetermined gripping position via the two adjacent star wheels 3, 4. It has become. The container gripped by the clamp arms 6A and 6B is rotationally transported by the counterclockwise rotation of the rotating body 7 constituting the clamp-type container transport device 5, and the first discharge position B on the upstream side or the downstream side. At the second discharge position C, and is discharged as appropriate. In the case of the container discharged at the first discharge position B, the container is conveyed and supplied to the capper 9 via the conveyer 8, and the container capped by the capper 9 is discharged onto the conveyer 8 again to be downstream. The caser 11 (boxing device) is packed in a box. On the other hand, the second discharge position C
Is discharged directly to the capper 10 adjacent to the container, and the container capped by the capper 10 is discharged to the conveyor 8 and packed in the caser 11 in the same manner. ing.

As shown in FIG. 2, the clamp-type container transfer device 5 includes a vertical shaft 18 rotatably supported on a cylindrical member 16 fixed to a frame 15 via a bearing 17, and A rotating body 7 connected and fixed to the upper end is provided, and a gear (not shown) connected and fixed to the lower end of the shaft 18 is linked to the gear of the motor. The rotating body 7 connects the disk-shaped upper plate 19 fixed to the upper end of the shaft 18, the ring-shaped lower plate 20 disposed below the upper plate 19, and the two members 19, 20. It comprises a plurality of connecting members 21. A container 22 (see FIG. 4) is located at an equal interval on the outer peripheral portion of the rotating body 7.
The clamp arms 6A and 6B for gripping and transporting the container 22 are provided.
Are provided in the radial direction, and the supporting positions of the containers 22 are simultaneously adjusted by the supporting position adjusting means 24 described later in detail.

Each of the positioning members 23 is slidably penetrated into a hollow rotary shaft 27 that opens and closes the clamp arms 6A and 6B, and slides along the slide shaft 2 that moves in the radial direction.
8 is attached perpendicularly to the outer end. On the other hand, a support position adjusting means 24 for moving the positioning member 23 in the radial direction is rotatably provided via a bearing 31 on the outer periphery of a support member 30 fixed coaxially with the upper plate 19 by a plurality of bolts 29. A cylindrical member 32,
A ring-shaped cam plate 34 is connected to an upper end of the cylindrical member 32 by bolts 33 and extends radially outward. The positioning member 23 is provided at equal circumferential positions of the cam plate 34. The same number of spiral cam grooves 35 are formed, and engagement pins 36 are attached to the inner ends of the slide shafts 28 so as to extend upward into the cam grooves 35 so as to engage. Let me. Also, as shown in FIG.
A gear 37 is formed along the circumferential direction on the outer periphery of the lower end of the cylindrical member 32 to which the cam plate 34 is attached, and a large-diameter sector gear is provided outside the upper plate 19 near the gear 37. 38 is engaged with the gear 37. The large-diameter sector gear 38 is integrally attached to the upper end, and a gear 40 is formed along the circumferential direction on the outer periphery of the lower end of the rotating shaft 39 that penetrates through the upper plate 19 and projects downward. A small-diameter sector gear 43 driven by a cam mechanism 42, which will be described in detail later, meshes with the gear 40. The small-diameter sector gear 43 is rotatably supported by a support shaft 44 fixed to the upper plate 19 and protruding downward, and a tip of a swing lever 45 extending radially outward from a base lower end of the sector gear 43. , A cam follower 46 constituting a part of the cam mechanism 42 is attached. The cam follower 46 is formed by a biasing spring 49 elastically mounted on a sector gear 47 which is swingably provided on the upper plate 19 and meshes with the gear 37 of the tubular member 32 and a rod 48 fixed to the upper plate 19. The circular cam member 50 is in contact with the conical cam surface of the circular cam member 50 from the radially outer side. The cam member 50 is provided on the outer periphery of the cylindrical member 16 so as to be able to move up and down. The cam member 50 is moved up and down by an elevating mechanism 51 described later in detail, but is not rotated with respect to the cylindrical member 16. The elevating mechanism 51 includes a screw shaft 52 disposed vertically and screwed to the inner side of the cam member 50, and both ends of which are rotatably supported by the cylindrical member 16; A gear attached to the lower end of the shaft 52, a plurality of gears meshed with the gear, and a motor for rotating the terminal gear are further provided.
The cam member 50 can be moved up and down by rotating the cam member 50 forward and backward by a required amount. According to such a configuration, when the cam member 50 is positioned below the imaginary line by the elevating mechanism 51, the cam follower 46 abuts on the upper portion of the conical surface of the cam member 50 and is most radially inward. As a result, the cam plate 34 is stopped by the large-diameter sector gear 38 at the most clockwise position as shown in FIG. In this state, each of the engagement pins 36 is simultaneously moved radially inward of each cam groove 35, and each of the positioning members 23 is simultaneously moved to a position most retreated to the radially inner side to perform positioning. Will be done. On the other hand, when the cam member 50 is positioned above the solid line by the elevating mechanism 51, the cam follower 46 abuts on the lower portion of the conical surface of the cam member 50 and is displaced most radially outward. . At this time, although not shown, the cam plate 34 is positioned at the most rotated counterclockwise direction, contrary to the previous time. In this state, the engaging pins 36 are simultaneously moved outward in the radial direction of the cam grooves 35, so that the positioning members 23 are simultaneously moved to the positions most advanced radially outward. Will be positioned.
Therefore, by adjusting the elevation position of the cam member 50 by the elevation mechanism 51, the radial stop position of each positioning member 23 can be appropriately adjusted in accordance with the container 22.

Next, a configuration for linearly opening and closing the clamp arms 6A and 6B in the tangential direction of the rotating body 7 will be described. That is, as shown in FIGS. 3 and 5, a housing 56 attached to and separated from the upper plate 19 upward through a cylindrical connecting member 55, and inside the housing 56, in the radial direction with respect to the rotating body 7. The rotating shaft 27 is provided at an intermediate position in the axial direction of the rotating shaft 27 and is rotatably supported via a bearing 57. A miter gear 60 that meshes with a miter gear 59 mounted on the shaft, a pinion 61 formed on the outer periphery of the tip of the rotating shaft 27, and are arranged horizontally and parallel to the housing 56 with an equal distance above and below the rotating shaft 27. Pair of rails 62, 62
Slide members 63, 64 which are slidably penetrated by the respective rails 62, 62 and are provided to be reciprocally movable, respectively;
Racks 65, 65 which are connected and fixed to the slide members 63, 64 and mesh with the pinion 61 are provided. Clamp arms 6A and 6B are attached. Then, the distal ends of the clamp arms 6A and 6B are held in parallel with each other by a gripper portion 6 which
A 'and 6B'. Therefore, the drive shaft 58
Is reciprocally rotated in the forward and reverse directions by a drive mechanism 70 described in detail later, whereby the rotation shaft 27 and the pinion 6 are rotated.
1, through the racks 63, 63, the clamp arm 6
A and 6B can be opened and closed linearly in the tangential direction of the rotating body 7 as described above. At this time, the rotation of the rotation shaft 27 is not hindered by the slide shaft 28 of the support position adjusting means 24 penetrating therethrough.

Next, the drive shaft 58 is rotatably supported by a connecting member 55, and has a miter gear 5 at its upper end.
9 and a first shaft 71 rotatably supported by the upper plate 19, interlocking with the first shaft 71, and extending downward from a right portion (see FIG. 3) of the lower end surface thereof (see FIG. 3). A second shaft portion 72 having an engagement portion 72A (see FIG. 6);
A third shaft portion 73 rotatably supported by the lower plate 11 and having a semicircular engaging portion 73A (see FIG. 6) extending upward from a left portion (see FIG. 3) of an upper end surface thereof.
, So that the third shaft 73 is connected to the second shaft 7.
2 can be rotated in the counterclockwise direction by the gap between both engagement portions 72A, 73A. A cylindrical sleeve 74 is fitted to the engagement portion between the second shaft portion 72 and the third shaft portion 73 so that the second shaft portion 72 and the third shaft portion 73 are coaxially aligned. I try to make it. The ring 75A fixedly connected to the second shaft 72 and the ring 75B fixedly connected to the third shaft 73 are provided with the third shaft 73.
6, an urging spring 76 for urging the second shaft portion 72 in a counterclockwise direction indicated by a two-dot chain line arrow is elastically mounted. The left end face of the engaging portion 72A of the two shaft portion 72 is connected to the engaging portion 73A of the third shaft portion 73.
Abuts on the right side end face. Further, the third shaft portion 73
6, a return spring 77 for urging the third shaft portion 73 in a clockwise direction indicated by a solid line arrow as shown in FIG. 6, specifically, in a direction to open the clamp arms 6A and 6B. I am armed. One end of a first swing lever 78 extending obliquely outward in the radial direction is attached to the lower end of the third shaft portion 73, and a part of the cam mechanism 70 is attached to the other end of the first swing lever 78. First cam follower 79 to be constituted
Is installed.

The first cam follower 79 is brought into contact with the conical cam surface of the cam member 80 from the radially outer side by a return spring 77 for urging the drive shaft 58 clockwise. As shown in FIG. 7, the cam member 80 includes the gripping position A, the first discharging position B, and the second discharging position B.
The valleys 80A, 80B, 80C formed by notching the same phase position as the discharge position C inward in the radial direction, respectively, and the ridges 80A ′ projecting radially outward from the valleys 80A, 80B, 80C. 80B 'and 80C'. The first cam follower 79 and the first swing lever 78 are displaced radially inward at the valleys 80A, 80B, and 80C, so that the elasticity of the return spring 77 is increased. The third shaft 73 by the force of the second, the second
The shaft 72 and the first shaft 71 interlocked therewith are rotated clockwise to release the clamp arms 6A and 6B, and the first cam follower 79 and the first swing at the peaks 80A ', 80B' and 80C '. By displacing the moving lever 78 radially outward against the resilience of the return spring 77, the third shaft 73 and the second shaft 72 interlocked with the third shaft 73 via the urging spring 76, The first shaft 71 is rotated counterclockwise on the second shaft 72 to close the clamp arms 6A and 6B. At the time of this closing, the second shaft portion 72 is connected to the clamp arms 6A, 6A.
Until B comes into contact with the container 22, the state shown in FIG. 6 is maintained by the resilient force of the urging spring 76 and the third shaft 73 is rotated substantially integrally, but the clamp arms 6A and 6B
After that, the urging spring 76 is twisted while the second shaft portion 72 (the first shaft portion 71) remains as it is, and only the third shaft portion 73 is rotated in the closing direction. At this time, the engaging portion 72A of the second shaft 72 and the engaging portion 73A of the third shaft 73 are separated. By the way, the opening / closing stroke (opening / closing amount) of the clamp arms 6A, 6B via the pinion 61 and the racks 65, 65 cannot be sufficiently increased only by the rotation amount by the cam mechanism 70. The first shaft 71 is located between the first shaft 71 and the second shaft 72.
A transmission mechanism 81 for amplifying the amount of rotation of the motor is provided. The speed change mechanism 81 includes a planetary gear 83 rotatably supported on three support shafts 82 erected at equal intervals on the outer side eccentric from the shaft portion of the second shaft portion 72. Single shaft 71
A gear 84 is formed along the circumferential direction on the lower end outer peripheral portion and meshes with each planetary gear 83, and further formed on the inner circumferential surface of the connecting member 55 along the circumferential direction and meshes with each planetary gear 83. And a gear 85 that operates. According to such a configuration, when the second shaft 71 is rotated with respect to the connecting member 55, the number of planetary gears 83 meshing with the gear 85 of the connecting member 55 is larger than the rotation of the second shaft 72. The first shaft portion 71 rotated by the planetary gear 83 because it rotates.
Can be amplified by a predetermined amount with respect to the second shaft portion 72.

The cam member 80 is provided on the cylindrical member 1.
6 is provided so as to be able to move up and down freely on the outer periphery of the cylinder 6, and is prevented from rotating with respect to the cylindrical member 16 while being moved up and down by an elevating mechanism 86 described in detail later. An elevating mechanism 86 for elevating and lowering the cam member 80 is provided in a vertical direction as shown in FIG. 2 and is screwed to the inner side of the cam member 80, and both ends of the cylindrical member 16 are rotatable. A screw shaft 87 that is supported and a plurality of gears 89 to 94 that mesh with a gear 88 attached to the lower end of the screw shaft 87 are linked to a motor (not shown) as a drive source. By rotating the cam member 80 forward and backward, the cam member 80 can be moved up and down. According to such a configuration, when the cam member 80 is positioned above the solid line by the elevating mechanism 86, the first cam follower 79 comes into contact with a lower portion of the conical surface of the cam member 80. The clamp arms 6A, 6B are closed from the most open state and stop at the most spaced apart closed state, so that relatively large containers and wide containers can be gripped. On the other hand, when the cam member 80 is positioned below the imaginary line by the elevating mechanism 86, the first cam follower 79 comes into contact with the upper portion of the conical surface of the cam member 80, so that the clamp arm 6A , 6B are closed from the smallest open state and stopped in the smallest open state, so that relatively small and wide containers can be gripped. As described above, in this embodiment, the clamp arm 6 is substantially formed by the conical cam member 80 and the elevating mechanism 86 for elevating the cam member 80.
It constitutes a gripping position adjusting means for adjusting the opening time and opening amount of A and 6B. According to such a configuration, the clamp arms 6A and 6B open and close linearly in the tangential direction of the rotating body 7 as shown by arrows in FIG. Even for deformed containers such as elliptical bottles and square bottles having different sizes, the opening and closing start positions of all the clamp arms 6A and 6B according to the containers by the elevating mechanism 86 (gripping position adjusting means), and further, At the same time as adjusting the closing stop position simultaneously, independently of the adjustment of the clamp arms 6A and 6B, the supporting position adjusting means 24 simultaneously adjusts the radial stop positions of all the positioning members 23 in accordance with the container 22. By doing so, as shown in FIG. 4, even if the sizes of the directional elliptical bottles or the horn bottles are different, as well as the round bottles without the direction name, the respective contents are different. 22 can be conveyed in a state of facing to the fixed direction without using exchange of the clamp arm, or the attachment.
The configurations of the cam mechanism 70 and the elevating mechanism 86 described above are already known in Japanese Utility Model Publication No. 7-43052. Further, in the present embodiment, different types of elliptical bottles, square bottles, and round bottles are mixed and gripped, but this is to indicate the high versatility of the transfer device, and does not indicate the actual transfer state. Absent.

Next, the engaging means 1 for forcibly closing the clamp arms 6A and 6B at the first discharge position B to selectively discharge the container 22 at the first discharge position B.
00 will be described. As shown in FIGS. 3 and 7, the engaging means is rotatably supported via a bearing 102 on a cylindrical member 101 fixed to the upper end surface of each housing 56, and has a rotating shaft 27 at its lower end. A miter gear 103 meshing with the miter gear 60 is mounted, and the fourth shaft portion 104 in the vertical direction substantially forming a part of the drive shaft 58 is provided.
A vertical rotating shaft 109 rotatably supported via a bearing 108 on a cylindrical member 107 fixed to the upper plate 19 and extending in the vertical direction, and attached to the upper end of the rotating shaft 109; The second swing lever 1 that rotates about the rotation shaft 109 and is interlocked with the fourth shaft 104
10, a second cam follower 111 provided at an inner end of the second swing lever 110, and the first discharge position B
And a driving mechanism 112 described later in detail.
Movable member 113 relatively displaced in the radial direction by
And On the outer side of the second swing lever 110, a sector gear 115 meshing with a gear 114 formed along the circumferential direction at the upper end of the fourth shaft portion 104 is integrally formed, thereby forming the second gear. The swing lever 104 is linked to the fourth shaft 104 (the drive shaft 58) via the sector gear 115. The movable cam member 113 has an outer cam surface formed in an arc shape, and the diameter of the cam surface is set to be the same as that of the intermediate portion of the conical cam surface of the cam member 80. Even if the trajectory of the first cam follower 79 becomes large due to ascending and descending movement of the first cam follower 79, and conversely, the closed state can be maintained without replacing the second cam follower 111.
That is, as described above, the clamp arms 6A, 6A
The closing stop position of B is set smaller than the width of the container 22, and after the clamp arms 6 </ b> A and 6 </ b> B abut the container 22, it is mounted between the second shaft 72 and the third shaft 73. Since the urging spring 76 is twisted to rotate only the third shaft portion 73 in the closing direction, the trajectory of the second cam follower 111 becomes larger or smaller than the trajectory of the original first cam follower 79. If it does, it is absorbed by the torsion of the biasing spring 76, so that the clamp arms 6A and 6B do not open. Further, the movable cam member 113 is formed to be slightly longer than the circumferential length of the valley portion 80B of the cam member 80, so that when the movable cam member 113 is relatively located on the radially outward side, the first
Before the cam follower 79 engages the valley portion 80B, the second cam follower 111 engages with the second cam follower 111, and the first cam follower 79 passes through the valley portion 80B and is slightly crested 80B ′.
Is separated from the second cam follower 111 at the position where it enters the area.

A driving mechanism 112 for relatively displacing the movable cam member 113 includes a disk-shaped support plate 116 disposed above the rotating body 7 via a support (not shown), and a lower end surface of the support plate A rail 117 attached to the second discharge position C, a slide member 118 engaged with the rail 117 and provided to be relatively displaceable in the radial direction,
A support member 119 fixed on the support plate 116 is rotatably supported via a bearing 120, and a screw portion on the outer side is screwed into a protrusion 121 projecting rightward from the slide member 118. A motor 126 that rotates the screw shaft 122 through a coupled screw shaft 122 and a gear 123 attached to an inner end of the screw shaft 122 and a gear 125 attached to a drive shaft 124. By rotating the motor 126 forward and backward, the movable cam member 113 and the slide member 118 can be relatively moved in the radial direction. The slide member 11
8, a potentiometer 127 is provided. The potentiometer 127 can measure the position of the slide member 118 in the radial direction with respect to the support plate 116, and the detection value measured by the potentiometer 127 is provided. Are input to a control device (not shown). In this control device, the optimum projecting position of the movable cam member 113 is stored in advance in correspondence with the elevating position of the conical cam member 80, whereby the elevating mechanism 86 changes the elevating position of the cam member 80. However, in the first discharge position B, the clamp arm 6A,
This prevents the container 22 from being opened from 6B.

According to the engaging means 100 having the above-described configuration, when the container 22 is discharged at the first discharge position B, the driving mechanism 112 is operated by the control device to move the movable cam member 113 to the first position. 2 cam follower 111
Is retracted to a position where it does not engage even if it is displaced inward in the radial direction (see FIG. 3), whereby the rotating body 7
Of the cam member 80 with the rotation of the cam member 80 in the counterclockwise direction.
The first cam follower 79 that has moved while engaging with A ′ continues to move while engaging with the valley portion 80B that is continuous with the crest portion 80A ′, so that the first cam follower 79 and the second swinging motion. Lever 78 is return spring 7
7, the drive shaft 58 is displaced radially inward by the resilience of
The clamp arms 6A and 6B are opened via
The containers 22 can be sequentially discharged at the first discharge position B. On the other hand, when the container 22 is to be discharged at the second discharge position C, the driving mechanism 112 is operated by the control device to cause the movable cam member 113 to protrude outward by a predetermined amount in the radial direction, contrary to the previous operation. By doing so (see FIG. 8), the second cam follower 111 comes into engagement with the cam surface of the movable cam member 113 on the front side of the first discharge position B. As a result, originally, as described above, the first
When the cam follower 79 is located at the valley portion 80B of the cam member 80, the clamp arms 6A and 6B are opened by the return spring 77, but the second cam follower 111 engages with the movable cam member 113 and moves. Accordingly, the clamp arms 6A and 6B are closed against the elastic force of the return spring 77 via the swing lever 111, the sector gear 115, the gear 114, and the fourth shaft 104 (drive shaft 58). In the first discharge position B so that the container 22 can be maintained.
Is never released. The first cam follower 79
Is rotated clockwise by the amount of the torsion of the urging spring 76 and moves while engaging with the valley portion 80B. Then, the second cam follower 1 that moves by engaging with the movable cam member 113
When the first cam follower 79 moves to the peak portion 80B 'with respect to the first cam follower 11, the second cam follower 111 is separated from the movable cam member 113. Accordingly, thereafter, the first cam follower 79 and the peak 80 of the cam member 80 are again formed.
Close the clamp arms 6A and 6B with B '
2 and the first cam follower 79 is moved to the second discharge position C.
When the clutch arm 6A, 6B is displaced inward in the radial direction by engaging with the valley portion 80C at, the clamp arms 6A, 6B are opened by the resilient force of the return spring 77, and the container 22 is sequentially discharged at the second discharge position C. be able to. That is, in the present embodiment, the space between the frame 15 and the cam member 80 and the space between the upper plate 19 and the lower plate 20 are reduced more specifically because the overall height of the clamp-type container transfer device 1 is reduced. Due to the set circumstances, there is no space in which the engaging means 100 can be provided between them, and even if there is a marginal space as much as possible, maintenance becomes complicated and costs increase. The engagement means 100 is provided above the rotating body 7 in consideration of the above. In other words, if there is a design margin in the overall height of the container conveying device, the upper plate 19
An engagement means 100 may be provided between the lower plate 20 and the lower plate 20.
Therefore, the second opening cam for selectively discharging the container at the first discharging position has to be disposed at the same height position as the first opening cam and the third opening cam. According to one embodiment, the degree of freedom in design can be increased. In the present embodiment, the drive shaft 58 is configured so as to be able to rotate between the second shaft portion 72 and the third shaft portion 73 mutually. It may be configured. Further, in the present embodiment, the clamp arm 6 is
The engagement means 100 is engaged with the drive shaft 58 that opens and closes A and 6B. However, the present invention is not limited to this. Similar effects can be obtained.

FIG. 9 shows a cam curve of a cam member 180 which constitutes a second embodiment of the present invention. In the first embodiment, clamps are provided at peaks 80A ', 80B' and 80C ', respectively. Although the arms 6A and 6B are closed and the clamp arms 6A and 6B are opened at the valleys 80A, 80B and 80C, respectively, in the second embodiment, the clamp arms are connected at the peaks 180A '. The clamp arm is opened and the clamp arm is closed at the valley 180A. For this reason, in the first embodiment, the clamp arms 6A and 6B are urged by the return spring 77 in the direction in which the clamp arms 6A and 6B are always released. However, in the second embodiment, on the other hand, in the direction in which the clamp arm is always closed by the return spring. I'm going.
Note that such a normally-closed type clamp-type container transfer device is conventionally well-known, and as described above, except that the biasing direction of the return spring and the configuration of the cam member 180 are different, the engaging means 100 and other components are different. The configuration is basically the same as that of the clamp-type container transfer device 1 (normally-open type) of the first embodiment, and the description is omitted here. The same members as those in the first embodiment are denoted by reference numerals obtained by adding "100" to the reference numerals used in the first embodiment. That is, the cam member 180 has a valley portion 180A cut inward in the radial direction over the range from the supply position A to the second discharge position C.
And a crest 180A 'protruding radially outward from the valley 180A over the range from the second discharge position C to the supply position A, and the first cam follower is moved in the valley 180A in the radial direction. The clamp arm is displaced inward to close the clamp arm by the resilience of the return spring, and the cam follower is displaced radially outward against the resilience of the return spring at the ridge 180A 'to open the clamp arm. Like that. Further, in the first embodiment, the movable cam member 113 is retracted inward in the radial direction when discharging the container at the first discharge position B, and is movable when discharging the container at the second discharge position C. The cam member 113 is moved outward in the radial direction. However, in the second embodiment, when the container is discharged at the first discharge position B, the movable cam member 113 is moved as indicated by a one-dot chain line. When the container 214 is moved radially outward and the container is discharged at the second discharge position C, the movable cam member 214 is moved as indicated by a two-dot chain line.
Is retracted radially inward. Even in the second embodiment having the above-described configuration, the discharge position of the container can be switched and controlled between the first discharge position B and the second discharge position C by the engagement means. Therefore, in the second embodiment, as in the first embodiment, the second opening cam for selecting the first discharging position and the second discharging position is arranged at the same height position as the first opening cam and the third opening cam. The degree of freedom in design can be increased as compared with the conventional case in which it had to be provided.

In the first embodiment, the movable cam member 113 is moved in the radial direction by the screw shaft 122 and the motor 126 for rotating the screw shaft 122. However, the present invention is not limited to this. The movable cam member 113 may be moved by using this. In this case, since the movable cam 144 can be moved quickly, the driving mechanism 112 can be used as a reject device. Although the configuration is made by the motor 126, the configuration is not limited to this, and the configuration may be such that the operator can make manual adjustments. Further, in the above-described first embodiment, the second cam followers 111 are provided on all the drive shafts 58. However, the present invention is not limited to this. The container can be configured to be discharged alternately with the second discharge position.

[0018]

As described above, according to the present invention, there is obtained an effect that the degree of freedom in design can be increased as compared with the conventional clamp-type container transfer device having a plurality of discharge positions.

[Brief description of the drawings]

FIG. 1 is a schematic plan view showing one embodiment of the present invention.

FIG. 2 is a cross-sectional view of the clamp-type container transport device 1.

FIG. 3 is an enlarged cross-sectional view of clamp arms 6A and 6B.

FIG. 4 is a plan sectional view showing a main part of FIG. 2;

FIG. 5 is a side view of the clamp arms 6A and 6B.

FIG. 6 is a sectional view showing an engaging portion 72A of a second shaft portion 72 and an engaging portion 73A of a third shaft portion 73.

FIG. 7 is a plan view showing a cam member 80.

FIG. 8 is a plan view showing an engagement means 100 and a driving mechanism 112.

FIG. 9 is a plan view showing a cam member 180 according to a second embodiment of the present invention.

[Explanation of symbols]

DESCRIPTION OF SYMBOLS 5 ... Clamp type container conveyance apparatus 7 ... Rotating body 19 ... Upper plate 20 ... Lower plate 22 ... Container 58 ... Drive shaft 70 ... Cam mechanism 78 ... First swing lever 79 ... First cam follower 80,180 ... Cam member 100 ... Engaging means 104 Fourth shaft portion 110 Second swing lever 111 Second cam follower 112 Driving mechanism 113 213
Movable cam member

Claims (3)

[Claims] A rotating body rotatably provided on a frame;
A pair of clamp arms provided on the rotating body so as to be openable and closable for gripping and transporting the container, a drive shaft for opening and closing these clamp arms, and a cam mechanism for opening the clamp arms at predetermined supply and discharge positions. The cam mechanism comprises: a cam member; and a first member provided on the drive shaft.
A clamp-type container transfer device provided with a swing lever and a first cam follower provided on the first swing lever and engaged with a cam surface of the cam member. An engaging means for selectively engaging the drive shaft is provided, and a position where the engaging means is provided is defined as a first discharge position by a cam mechanism, and the discharge position downstream from the cam mechanism is a second discharge position. Wherein the engagement means comprises: a second swing lever interlocked with a drive shaft at a position different from that of the first swing lever; a second cam follower provided at a tip of the second swing lever; A movable cam member provided at the first discharge position and relatively moving in the radial direction, the movable cam member closing the clamp arm when engaged with the second cam follower to prevent discharge of the container. While the above Clamp vessel conveying device, characterized in that when spaced from the 2 cam follower is adapted to discharge the container to allow opening of the clamp arm. 2. A rotating body rotatably provided on a frame,
A pair of clamp arms provided on the rotating body so as to be openable and closable for gripping and transporting the container, a drive shaft for opening and closing these clamp arms, and a cam mechanism for opening the clamp arms at predetermined supply and discharge positions. The cam mechanism comprises: a cam member; and a first member provided on the drive shaft.
A clamp-type container transfer device provided with a swing lever and a first cam follower provided on the first swing lever and engaged with a cam surface of the cam member. An engaging means for selectively engaging the drive shaft is provided, and a position where the engaging means is provided is set as a first discharge position by the engaging means, and the discharge position on the downstream side of the first discharge position is set as a second discharge position. A discharge position, wherein the engagement means includes a second swing lever interlocked with a drive shaft at a position different from that of the first swing lever, and a second cam follower provided at a tip of the second swing lever. A movable cam member that is provided at the first discharge position and relatively moves in the radial direction. The movable cam member discharges the container by releasing the clamp arm when the movable cam member is engaged with the second cam follower. On the other hand, Clamp vessel conveying device, characterized in that upon separation from the cam follower is adapted to prevent the discharge of the container to permit the closure of the clamp arm. 3. A sector gear is formed at an end of the second swing lever, and the sector gear is meshed with a gear formed in a circumferential direction of the drive shaft and is interlocked with the drive shaft. The clamp-type container transport device according to claim 1 or 2.