JP7420389B2 - Transfer device - Google Patents

Description

The present invention relates to a transfer device that transfers objects that are intermittently transferred to a delivery position by a transfer machine to downstream equipment.

2. Description of the Related Art Conventionally, a conveying machine is known that intermittently conveys a plurality of objects to be conveyed arranged in a horizontal first conveying direction in the first conveying direction. The conveyed object is conveyed to a target position and temporarily stopped by such a conveyor, and then conveyed in a horizontal second conveying direction perpendicular to the first conveying direction, to a downstream device, such as a supply conveyor or a packaging machine. Transfer devices for pushing are also known (see, for example, Patent Documents 1 and 2).

JP2020-66503A Patent No. 5399353

By the way, when the temporary stop time of the conveyor is short, it is necessary to increase the speed of the transfer device to scrape out the object to be conveyed from the conveyor in a short time. When the speed of the transfer device is increased, the speed and timing at which the transfer device supplies the transported object to downstream equipment may not match the speed and timing of reception of the downstream equipment. Further, when the conveyed object is pushed by the transfer device from the conveyor to downstream equipment, the posture of the conveyed object collapses.

Therefore, it is an object of the present invention to provide a transfer device that can stably supply objects to be transported in accordance with the speed and timing of downstream equipment even if the objects to be transported with a short temporary stop time are quickly scraped from a conveyor. With the goal.

In order to solve the above problems, a plurality of objects to be transported arranged in a first transport direction are transported from a transport machine that intermittently transports them in the first transport direction to a delivery position and then temporarily stopped. A transfer device that transfers the object to a downstream device that transports the object in a second transfer direction perpendicular to the first transfer direction, the transfer device transporting the object from the delivery position to the downstream device in the second transfer direction. a conveyance path provided along the conveyance path, and the objects to be conveyed, which are arranged in parallel in the first conveyance direction above the conveyance machine and the conveyance path, and are sequentially conveyed to the delivery position by the conveyance machine. a first push conveyor and a second push conveyor that alternately push the object from the send-out position to the downstream device; the first push conveyor and the second push conveyor push the object from the send-out position to the downstream device After scraping the object onto the conveyance path, the object to be conveyed is pushed along the conveyance path, the object to be conveyed is supplied from the conveyance path to the downstream equipment, and the first pushing conveyor transports the object to the conveyor. The speed of the first push conveyor when scraping the object from the conveyance path to the conveyance path is higher than the speed of the first push conveyor when the first push conveyor supplies the conveyed object from the conveyance path to the downstream equipment. The speed of the second pushing conveyor when the second pushing conveyor scrapes out the object from the delivery position to the conveying path is set so that the second pushing conveyor scrapes the object from the conveying path to the conveying path. The speed is set to be faster than the speed of the second push conveyor when supplying to downstream equipment.

According to the above, since the first pushing conveyor and the second pushing conveyor are arranged in parallel in the first conveying direction X, the pushing of the object by the first pushing conveyor and the pushing of the object by the second pushing conveyor are alternately carried out. can be done. In addition, during the cycle in which the first pushing conveyor pushes the packaged object, the second pushing conveyor can prepare for the next pushing of the packaged object independently of the operation of the first pushing conveyor, and the conveying machine It is possible to transport objects to be transported to the delivery position. During the cycle in which the second pushing conveyor pushes the packaged items, the first pushing conveyor can prepare for pushing the next packaged item independently of the operation of the second pushing conveyor, and the conveying machine can move the next packaged item. The conveyed object can be conveyed to the delivery position. Therefore, in accordance with the operation of the upstream conveyor, the transfer device can scrape out the object to be transported from the conveyor to the conveyance path at high speed, and in accordance with the operation of the downstream equipment, the transfer device can scrape the object to be packaged into the conveyance path. can be stably supplied to downstream equipment at low speed.

According to the present invention, even if the object to be transported is quickly scraped out of the conveyor, the object can be stably supplied in accordance with the speed and timing of downstream equipment.

FIG. 2 is a schematic front view of the packaging system. FIG. 3 is a perspective view of an object to be transported. FIG. 2 is a front view of the conveyance machine and the transfer device as seen from upstream to downstream in the first conveyance direction X. It is a top view of a conveyance machine and a transfer device. FIG. 3 is a side view of the conveyance machine and the transfer device as viewed from upstream to downstream in the second conveyance direction. FIG. 3 is a side view of the conveyance machine and the transfer device as viewed from downstream to upstream in the second conveyance direction. It is a perspective view of a bucket. FIG. 3 is a perspective view of the conveyance platform. It is a timing chart showing changes in speed of the conveyor, the first push conveyor, and the second push conveyor. It is a drawing showing a stage before the conveyed object is scraped out by the first push conveyor. 5 is a diagram illustrating a stage in which the first push conveyor starts operating; FIG. FIG. 6 is a drawing showing a stage in which the first push conveyor scrapes out an object to be conveyed. 5 is a diagram illustrating a stage in which a first pushing conveyor pushes an object to a downstream device; FIG. It is a drawing showing a stage before the first push conveyor supplies the conveyed object to downstream equipment. 5 is a diagram illustrating a stage in which a first push conveyor supplies an object to a downstream device; FIG.

Embodiments will be described below with reference to the drawings. However, although various technically preferable limitations are attached to the embodiments described below, the scope of the present invention is not limited to the following embodiments and illustrated examples.

[1] Overview of the packaging system and objects to be transported FIG. 1 is a schematic front view of the packaging system.
The packaging system includes a conveyor 10, a transfer device 30, and a packaging machine 80.
The conveyance machine 10 intermittently conveys a plurality of objects 90 arranged in series in the first horizontal conveyance direction X in the first conveyance direction. Here, in FIG. 1, the first conveyance direction X is a direction perpendicular to the plane of the paper in FIG. It is upstream in direction X.

The transfer device 30 scrapes out the transported object 90 transported by the transporting machine 10 to the sending position X1 from the transporting machine 10 at high speed in a horizontal second transporting direction Y while the transporting machine 10 is temporarily stopped, and scrapes the transported object 90 while decelerating. The conveyed object 90 is transferred to the packaging machine 80 in the second conveyance direction Y, and the conveyed object 90 is supplied to the packaging machine 80 to the bag making machine 81 at low speed. The second transport direction Y is a direction perpendicular to the first transport direction X.

The packaging machine 80 is a downstream device that transports the film 95 and the transported object 90 in the second transport direction Y. The packaging machine 80 transports the film 95 and the transported object 90 in the second transport direction Y, and sequentially wraps the transported object 90 with the film 95, thereby sequentially manufacturing the packaged objects 99.

The packaging machine 80 is, for example, a reverse pillow packaging machine. The packaging machine 80 includes a bag making device 81, a center seal device 82, and an end seal device 83 in this order from upstream to downstream in the second transport direction Y. The packaging machine 80 also includes a film supply machine 84 that continuously supplies a strip-shaped film 95 to the bag making machine 81. The bag making machine 81 wraps the transported object 90 in the film 95 by rolling the film 95 into a cylindrical shape so that both sides of the film 95 (hereinafter referred to as vertical stitches) are overlapped. The conveyed object 90 supplied to the bag making device 81 by the transfer device 30 is conveyed downstream in the second conveyance direction Y together with the outer film 95. The center seal device 82 continuously seals the vertical seams of the film 95. The end seal device 83 forms a horizontal seam by periodically sealing a portion of the film 95 between adjacent objects 90 to be transported, and also cuts the horizontal seam.

The power source of the packaging machine 80 , that is, the supply motor of the film supply machine 84 and the drive motor of the end seal device 83 are controlled by the control device 70 . Thereby, the speed of the packaging machine 80 is controlled to a constant speed. The speed of the packaging machine 80 refers to the traveling speed of the film 95 fed by the film feeder 84.

FIG. 2 is a perspective view of an object 90 to be transported by the transporter 10. The object to be transported 90 is a collection of a plurality of thin and flat articles 91. A conveyed object 90 is configured by a plurality of articles 91 standing upright in a small end shape and stacked and gathered together in the first conveying direction X.

[2] Conveyor The conveyor 10 will be described with reference to FIGS. 3 to 6. FIG. 3 is a front view of the conveyance machine 10 and the transfer device 30 as viewed from upstream to downstream in the first conveyance direction X. FIG. 4 is a plan view of the carrier 10 and the transfer device 30. FIG. 5 is a side view of the conveyance machine 10 and the transfer device 30 as viewed from upstream to downstream in the second conveyance direction Y. FIG. 6 is a side view of the conveyor 10 and the transfer device 30 as viewed from downstream to upstream in the second conveyance direction Y. Note that in FIG. 4, illustration of the transported object 90 is omitted to make it easier to understand the configurations of the transport machine 10 and the transport device 30.

Conveyor 10 is a bucket conveyor. The conveyor 10 includes a pair of tail pulleys 11, a pair of head pulleys 12, a pair of endless belts 13, a pair of motors 14, and a plurality of buckets 15.

The pair of tail pulleys 11 are rotatably attached to the machine frame in a state where they are lined up in the second transport direction Y on the upstream side in the first transport direction X. The pair of head pulleys 12 are rotatably attached to the machine frame in a state where they are lined up in the second conveyance direction Y on the downstream side in the first conveyance direction X. The delivery position X1 is located between the tail pulley 11 and the head pulley 12 and closer to the head pulley 12.

One endless belt 13 is wound around one of the pulleys 11 and 12, and the other endless belt 13 is wound around the other pulley 11 and 12, and these endless belts 13 are parallel to each other along the first conveyance direction X. It is located in A tail pulley 11 is connected to a motor 14. By intermittently driving the tail pulley 11 by the motor 14, the endless belt 13 intermittently runs in the first conveyance direction X. Motor 14 is controlled by a controller 70 (shown in FIG. 1).
Note that an endless chain may be used instead of the endless belt 13, and sprockets may be used instead of the pulleys 11 and 12.

A plurality of buckets 15 are attached to a pair of endless belts 13 so as to span in the second conveyance direction Y between the pair of endless belts 13. These buckets 15 are arranged along the outer peripheral surface of the endless belt 13 at equal intervals in the first conveyance direction X. By driving the endless belt 13 by the motor 14, the bucket 15 moves in the first conveyance direction X.

FIG. 7 is a perspective view of the bucket 15. The bucket 15 has a recess 15a on its upper surface on which the object 90 is placed, and a plurality of guide grooves 15b on the bottom of the recess 15a, on which the lower portions of the articles 91 of the object 90 are placed. These guide grooves 15b are provided parallel to each other along the second conveyance direction Y. The lower parts of the articles 91 are placed against the guide grooves 15b, so that the articles 91 are stacked in the first conveyance direction X and gathered together. Since these articles 91 protrude upward from the recess 15a, pushing members 55 and 65, which will be described later, can push the articles 91 by hitting the protruding portions.

The recess 15a and the guide groove 15b are open on the side surface of the bucket 15 (the downstream side surface in the second conveyance direction Y). Therefore, the article 91 can be moved along the guide groove 15b and taken out from the guide groove 15b to the downstream side in the second transport direction Y.

[3] Transfer Device Next, the transfer device 30 will be explained with reference to FIGS. 3 to 6.
The transfer device 30 includes a conveyor table 31, a first push conveyor 50, and a second push conveyor 60.

[3-1] Conveyance platform The conveyance platform 31 is provided along the second conveyance direction Y from the side of the conveyance machine 10 at the delivery position X1 to the bag making device 81 of the packaging machine 80.

FIG. 8 is a perspective view of the conveyance platform 31. Side guides 32 and 33 are provided on both side portions of the conveyance table 31 in the first conveyance direction X along the second conveyance direction Y, respectively. The side guides 32 and 33 are provided so as to protrude upward from the sides of the conveyance table 31, and the conveyed object 90 on the conveyance table 31 is supported from the side by the side guides 32 and 33. By providing such side guides 32 and 33 on both sides of the conveyance table 31, a conveyance path consisting of the conveyance table 31 and the side guides 32 and 33 is configured. The conveyance path is provided along the second conveyance direction Y from the side of the conveyance machine 10 at the delivery position X1 to the bag making machine 81 of the packaging machine 80.

Upstream portions 32a and 33a of the mutually opposing inner wall surfaces of the side guides 32 and 33 are erected perpendicularly to a plane defined by the first transport direction X and the second transport direction Y. The downstream portions 32b and 33b of the inner wall surfaces of the side guides 32 and 33 continue downstream in the second conveyance direction Y from the upstream portions 32a and 33a, and are defined by the first conveyance direction X and the second conveyance direction Y. It is erected diagonally to the plane. The downstream portions 32b, 33b are inclined in the same direction from the vertical plane along the upstream portions 32a, 32a. That is, the downstream portion 32b of the inner wall surface of the side guide 32 is tilted outward, and the downstream portion 33b of the inner wall surface of the side guide 33 is tilted inward. The angle of inclination of the downstream portions 32b, 33b from the vertical plane gradually increases from upstream to downstream.

Note that an additional guide may be provided on the conveyance table 31 along the second conveyance direction Y between the side guides 32 and 33. Of both side surfaces of this additional guide, the upstream portion of the side surface on the side guide 32 side is parallel to the upstream portion 32a of the inner wall surface of the side guide 32, and the downstream portion of the side surface is parallel to the upstream portion 32a of the inner wall surface of the side guide 32. It is parallel to the downstream portion 32b. The upstream portion of the opposite side surface is parallel to the upstream portion 33a of the inner wall surface of the side guide 33, and the downstream portion of that side surface is parallel to the downstream portion 33b of the inner wall surface of the side guide 33.

A plurality of guide grooves 35 are formed on the upper surface of the transport table 31 substantially along the second transport direction Y. The upstream portion 35a of the guide groove 35 is formed parallel to the second conveyance direction Y, and the downstream portion 35b is formed obliquely toward the side guide 33 downstream. The range in which the upstream portion 35a of the guide groove 35 is formed in the second conveyance direction Y overlaps the range in which the upstream portions 32a and 33a of the inner wall surfaces of the side guides 32 and 33 are formed in the second conveyance direction Y. There is. The range where the downstream portion 35b of the guide groove 35 is formed in the second conveyance direction Y overlaps the range where the downstream portions 32b, 32b of the inner wall surfaces of the side guides 32, 33 are formed in the second conveyance direction Y. There is. Note that the side guide 33 has a downstream portion 33b of the inner wall surface that has fallen inward, and the side guide 32 has a downstream portion 32b of the inner wall surface that has fallen outward.

When the bucket 15 is located at the delivery position X1, the guide groove 35 of the conveyance table 31 continues downstream in the second conveyance direction Y from the guide groove 15b of the bucket 15. Therefore, the article 91 in the guide groove 15b is transferred from the guide groove 15b to the guide groove 35 by being pushed downstream in the second conveyance direction Y by the later-described pushing members 55 and 65. When the article 91 is conveyed downstream in the second conveyance direction Y along the guide groove 35, the lower part of the article 91 moves toward the side guide 33 by the downstream portion 35b of the guide groove 35, and the article 91 moves toward the side guide 32, The downstream portions 32b and 33b of the inner wall surface of 33 cause the shogi to fall toward the side guide 32. When the article 91 becomes shogi-less, the conveyance resistance force applied to the article 91 increases.

[3-2] First push conveyor and second push conveyor The first push conveyor 50 and the second push conveyor 60 are arranged in parallel in the first transport direction X above the transport machine 10 and the transport table 31. There is. The first pushing conveyor 50 and the second pushing conveyor 60 alternately push the objects 90 that are sequentially transported to the delivery position X1 to the bag making device 81 of the packaging machine 80. That is, the first pushing conveyor 50 sequentially pushes every other conveyed object 90 sequentially transported to the delivery position X1 to the bag making device 81 of the packaging machine 80, and the second pushing conveyor 60 The objects 90 between the objects 90 conveyed by the conveyors 50 are sequentially pushed to the bag making machine 81 of the packaging machine 80.

The first push conveyor 50 and the second push conveyor 60 each have a power source, so that their conveyance speeds can be controlled independently of each other. FIG. 9 is a timing chart showing changes in the conveyance speed of the conveyor 10, the first push conveyor 50, and the second push conveyor 60. As shown in FIG. 9, in the first cycle T1 in which the first push conveyor 50 pushes the object 90, the conveyance speed of the first push conveyor 50 increases to the maximum speed V1 and then becomes equal to the speed of the packaging machine 80. Alternatively, the conveyance speed of the second push conveyor 60 is independent of the conveyance speed of the first push conveyor 50, where the speed is reduced to an approximate speed V2. In the second cycle T2 in which the second push conveyor 60 pushes the object 90, the conveyance speed of the second push conveyor 60 increases to the maximum speed V1, and then increases to a speed V2 equal to or close to the speed of the packaging machine 80. When decelerating, the conveyance speed of the first push conveyor 50 is independent of the conveyance speed of the second push conveyor 60.

Next, the configurations of the first push conveyor 50 and the second push conveyor 60 will be described in detail.

The first pushing conveyor 50 has a first tail pulley 51, a first head pulley 52, a first endless belt 53, a first motor 54, and two first pushing members 55. The second pushing conveyor 60 has a second tail pulley 61, a second head pulley 62, a second endless belt 63, a second motor 64, and two second pushing members 65. The number of first pushing members 55 and the number of second pushing members 65 may be one, or may be three or more. The number of first pushing members 55 and the number of second pushing members 65 are changed in design depending on the distance from the delivery position X1 to the packaging machine 80.

The tail pulleys 51 and 61 are rotatably attached to the machine frame in a state where they are lined up in the first transport direction X above the side of the transport machine 10 at the delivery position X1. The tail pulleys 51 and 61 are disposed above the conveyor 10 on the upstream side in the second conveyance direction Y.
The head pulleys 52 and 62 are rotatably attached to the machine frame in a state where they are lined up in the first transport direction X at the downstream end of the transport table 31 in the second transport direction Y and above the bag making device 81.

The first endless belt 53 is wound around the pulleys 51 and 52, and the second endless belt 63 is wound around the pulleys 61 and 62, and these endless belts 53 and 63 are arranged parallel to each other along the second conveyance direction Y. ing.

A first motor 54 is connected to the first tail pulley 51. The first tail pulley 51 is driven by the first motor 54, so that the first endless belt 53 runs in the second conveyance direction Y. A second motor 64 is connected to the second tail pulley 61. The second tail pulley 61 is driven by the second motor 64, so that the second endless belt 63 runs in the second conveyance direction Y.

The first pushing member 55 is attached to the first endless belt 53 , and the second pushing member 65 is attached to the second endless belt 63 . The first pushing members 55 and the second pushing members 65 are alternately arranged in the second conveying direction Y at equal intervals along the outer peripheral surfaces of the endless belts 53 and 63. As the first endless belt 53 is driven by the first motor 54, the first pushing member 55 moves in the second conveyance direction Y. As the second endless belt 63 is driven by the second motor 64, the second pushing member 65 moves in the second conveyance direction Y.

[4] Operation [4-1] Operation of the conveyor and packaging machine The control device 70 intermittently drives the motor 14 of the conveyor 10, so that the endless belt 13 alternately runs and pauses, The conveyor 10 intermittently conveys the object to be conveyed 90 in the first conveyance direction X. When the conveyance machine 10 temporarily stops, one of the buckets 15 stops at the delivery position X1.

Here, as shown in FIG. 9, the conveyor 10 temporarily stops in the first half of the first cycle T1 and the second cycle T2, and operates in the second half of the first cycle T1 and the second cycle T2. . Specifically, time t0 is the start of the first cycle T1 and the end of the second cycle T2, and at time t0, the conveyance machine 10 starts to temporarily stop. After that, the temporary stop of the transport machine 10 ends, and transport of the transport machine 10 starts. The subsequent time t5 is the end of the first cycle T1 and the start of the second cycle T2, and at time t5, the conveyance machine 10 starts to temporarily stop. After that, the temporary stop of the transport machine 10 ends, and transport of the transport machine 10 starts.

When the conveyor 10 intermittently conveys the object 90, the packaging machine 80 operates continuously under the control of the control device 70. That is, the film feeder 84 continuously supplies the film 95 at a constant speed, the center seal device 82 continuously seals the vertical seams of the film 95, and the end seal device 83 periodically seals the film 95. Cut.

[4-2] Operation of the transfer device The control device 70 controls the motors 54 and 64 of the push conveyors 50 and 60, so that the first push conveyor 50 and the second push conveyor 60 are sequentially transported to the delivery position X1. Objects 90 to be transported are alternately transported to the packaging machine 80.

Here, just before the conveyance machine 10 pauses at time t0, as shown in FIG. While waiting, the next upper second pushing member 65 returns from the second head pulley 62 to the second tail pulley 61 along the upper return surface of the second endless belt 63.

Thereafter, when the conveyance machine 10 stops at time t0, the first pushing member 55 begins to move in the second conveyance direction Y and accelerates, as shown in FIG. Then, by the time the first pushing member 55 hits the transported object 90, the speed of the first pushing member 55 exceeds the speed of the packaging machine 80. Thereafter, as shown in FIG. 12, when the first pushing member 55 accelerates and pushes the transported object 90 in the second transport direction Y to the delivery position X1, the article 91 of the transported object 90 is Accordingly, it is scraped out from the guide groove 15b of the bucket 15 to the guide groove 35 of the conveyance table 31. Thereafter, as shown in FIG. 13, at time t1 after the entire transported object 90 has been transferred onto the transport platform 31, the speed of the first pushing member 55 reaches the maximum speed V1. Note that while the conveyed object 90 is being pushed by the first pushing member 55, the next second pushing member 65 rotates downward around the second tail pulley 61 and moves from the bucket 15 at the sending position X1. It waits at a position remote upstream in the second transport direction Y.

Thereafter, at time t2 while the first pushing member 55 is pushing the object 90 at the maximum speed V1, the object 90 is transferred to the upstream portions 32a, 33a and the downstream portion 32b of the inner wall surfaces of the side guides 32, 33. , 33b is reached. Therefore, after that, the lower part of the article 91 is moved toward the side guide 33 by the downstream portion 35b of the guide groove 35, and the article 91 of the conveyed article 90 is moved to the side by the downstream portion 32b, 33b of the inner wall surface of the side guides 32, 33. Shogi gradually falls towards guide 32. As the inclination angle of the downstream portions 32b, 33b from the vertical plane gradually increases from upstream to downstream, the conveyance resistance force applied to the article 91 gradually increases. Therefore, the article 91 is not thrown downstream in the second conveyance direction Y by the high-speed first pushing member 55. Note that immediately after time t2 when the transported object 90 reaches the boundary between the upstream portions 32a, 33a and the downstream portions 32b, 33b of the inner wall surfaces of the side guides 32, 33, the temporary stop of the transporting machine 10 ends and the transporting machine stops. 10 is resumed, the next bucket 15 and the objects 90 placed thereon are transported to the delivery position X1.

Thereafter, when the article 91 of the conveyed object 90 is pushed downstream along the downstream portion 35b of the guide groove 35 by the first pushing member 55, the first pushing member 55 starts decelerating at time t3. Then, as shown in FIG. 14, at time t4 just before the transported object 90 reaches the bag making machine 81, the first pushing member 55 decelerates to a speed V2 equal to or close to the speed of the packaging machine 80, and then, The first pushing member 55 moves at a constant speed V2. At the subsequent time t5, the transported object 90 is supplied to the bag making machine 81 by the first pushing member 55, as shown in FIG. Therefore, the conveyed object 90 is wrapped in the film 95 by the bag making machine 81 and taken into the packaging machine 80 following the film 95. The speed V2 of the first pushing member 55 at time t5 is slower than the speed at which the first pushing member 55 scrapes out the transported object 90 from the bucket 15 to the conveyance table 31.
Note that, as described above, when the first pushing member 55 pushes the object 90 from the delivery position X1 to the bag making device 81 of the packaging machine 80 along the conveying surface at the bottom of the endless belt 53, the other first pushing member 55 The pushing member 55 returns to the first tail pulley 51 along the upper return surface of the endless belt 53.

After time t5, the first pushing member 55 rotates upward around the second head pulley 62 and waits. In parallel, the other first pushing member 55 rotates downward around the second tail pulley 61 and waits at a position upstream in the second transport direction Y from the bucket 15 at the delivery position X1.

At time t5 when the transported object 90 is supplied to the bag making machine 81, the next transported object 90 reaches the delivery position X1, and the transport machine 10 stops. At that time, the second pushing member 65 starts moving in the second conveying direction Y and accelerates. Then, by the time the second pushing member 65 hits the object to be transported 90, the speed of the second pushing member 65 exceeds the speed of the packaging machine 80. Thereafter, when the second pushing member 65 accelerates and pushes the conveyed object 90 in the second conveying direction Y to the delivery position From there, it is scraped out into the guide groove 35 of the conveyance table 31. Thereafter, at time t6 after the entire transported object 90 has been transferred onto the transport table 31, the speed of the second pushing member 65 reaches the maximum speed V2.

Thereafter, at time t7 while the second pushing member 65 is pushing the object 90 at the maximum speed V1, the object 90 is transferred to the upstream portions 32a, 33a and the downstream portion 32b of the inner wall surfaces of the side guides 32, 33. , 33b is reached. Therefore, after that, the article 91 of the conveyed object 90 is gradually tilted toward the side guide 32 by the downstream portions 32b and 33b of the inner wall surfaces of the side guides 32 and 33, and the conveyance resistance force applied to the article 91 gradually increases. . Immediately after time t7, the temporary stop of the conveyor 10 ends and the conveyance of the conveyor 10 is resumed, so that the next bucket 15 and the object 90 placed thereon are conveyed to the delivery position X1.

Thereafter, when the article 91 of the conveyed object 90 is pushed downstream along the downstream portion 35b of the guide groove 35 by the second pushing member 65, the first pushing member 55 starts decelerating at time t8. Then, at time t9 before the transported object 90 reaches the bag making machine 81, the second pushing member 65 decelerates to a speed V2 equal to or close to the speed of the packaging machine 80, and then the second pushing member 65 Moves at a constant speed of V2. At the subsequent time t0, the transported object 90 reaches the bag making machine 81, and the transported object 90 is supplied to the bag making machine 81 by the first pushing member 55. Therefore, the conveyed object 90 is wrapped in the film 95 by the bag making machine 81 and taken into the packaging machine 80 following the film 95. The speed V2 of the second pushing member 65 at time t0 is slower than the speed at which the second pushing member 65 scrapes out the transported object 90 from the bucket 15 to the conveyance table 31.

Note that, as described above, when the second pushing member 65 pushes the object 90 from the delivery position X1 to the bag making device 81 of the packaging machine 80 along the lower conveying surface of the endless belt 63, the second pushing member 65 The pushing member 65 returns from the second head pulley 62 to the second tail pulley 61 along the upper return surface of the endless belt 63.

After time t0, the second pushing member 65 rotates upward around the second head pulley 62 and stops. In parallel, the other second pushing member 65 rotates downward around the second tail pulley 61 and waits at a position upstream in the second transport direction Y from the bucket 15 at the delivery position X1.

[5] Advantageous Effects (1) Since the first push conveyor 50 and the second push conveyor 60 are arranged in parallel in the first conveyance direction X, the pushing of the object 90 by the first push conveyor 50 and the second push conveyor 60 can alternately push and transport the objects 90. In addition, in the first cycle T1 in which the first pushing conveyor 50 pushes the object 90, the second pushing conveyor 60 prepares for pushing the next object 90 independently of the operation of the first pushing conveyor 50. At the same time, the conveyor 10 can convey the next object 90 to the delivery position X1. In the second cycle T2 in which the second pushing conveyor 60 pushes the object 90, the first pushing conveyor 50 can prepare for pushing the next object 90 independently of the operation of the second pushing conveyor 60. At the same time, the conveyor 10 can convey the next conveyed object 90 to the delivery position X1. Therefore, in accordance with the operation of the upstream conveyor 10, the conveyed object 90 can be scraped out from the bucket 15 to the conveyor table 31 at high speed by the transfer device 10, and in accordance with the operation of the downstream packaging machine 80, the conveyed object 90 can be scraped out at high speed. 30, it is possible to stably supply the transported object 90 from the transport table 31 to the packaging machine 80 at low speed. Furthermore, the path length from the delivery position X1 to the bag making machine 81 can be shortened.

(2) Since the scraping speed of the push conveyors 50 and 60 is high, the transported object 90 can be reliably transferred to the transport table 31 during the short pause time of the transport machine 10.

(3) Since the push conveyors 50 and 60 supply the transported object 90 to the bag making machine 81 at a speed V2 equal to or close to the speed of the packaging machine 80, wrinkles in the film 95 and misalignment of the transported object 90 are suppressed. It will be done.

(4) The transfer device 30 has the function of scraping out the transported object 90 from the transporting machine 10 and the function of supplying the transported object 90 to the packaging machine 80 by matching the supply speed of the transported object 90 with the speed of the packaging machine 80. It has both. Therefore, as in Patent Documents 1 and 2, a supply conveyor is installed downstream of the device that scrapes out the transported objects from the conveyor and upstream of the packaging machine, for supplying the transported objects at a speed that matches the speed of the packaging machine. There is no need to provide it separately. Furthermore, the path length from the delivery position X1 to the bag making machine 81 can be shortened.

(5) Since the first push conveyor 50 and the second push conveyor 60 have separate power sources, the conveyance speeds of the first push conveyor 50 and the second push conveyor 60 can be controlled independently of each other without using a complicated transmission mechanism. can be controlled.

(6) Since the downstream portions 32b and 33b of the inner wall surfaces of the side guides 32 and 33 are inclined from the vertical plane along the upstream portions 32a and 32a, the conveyed object 90 that is conveyed at high speed is placed downstream of the side guides 32 and 33. Resistance is received from portions 32b and 33b. Therefore, the conveyed object 90 is not thrown away by the pushing members 55 and 65.

(7) When the pushing members 55, 65 decelerate, the conveyed object 90 receives resistance from the downstream portions 32b, 33b of the side guides 32, 33. Therefore, the conveyed object 90 does not separate from the pushing members 55, 65 which are being decelerated due to inertial force.

(8) The article 91 of the conveyed article 90 is tilted due to the inclination of the downstream portions 32b, 33b of the side guides 32, 33. Since the downstream portion 35b is formed obliquely toward the side guide 33 toward the downstream side, the lower part of the article 91 is moved toward the side guide 33 by the downstream portion 35b of the guide groove 35, and thereby the article 91 is Shogi defeat is performed efficiently.

[6] Modifications Each component of the packaging system may be modified from the above embodiment. Changes from the above embodiments will be described below. Two or more changes described below may be applied in combination as much as possible.

(1) In the above embodiment, the first pushing conveyor 50 stops intermittently, and the pushing member 55 moves to a position upstream in the second conveying direction Y from the bucket 15 at the sending position X1 in the second half of the second cycle T2. stand by. On the other hand, the first push conveyor 50 may be operated continuously without stopping temporarily. The same applies to the second push conveyor 60.

(2) In the embodiment described above, the transported object 90 is a collective item. On the other hand, the conveyed object 90 may be a single article.

(3) In the above embodiment, because the downstream portions 32b and 33b of the inner wall surfaces of the side guides 32 and 33 are inclined, the conveyed object 90 being conveyed at high speed receives resistance from the downstream portions 32b and 33b, and the conveyance path The conveyance resistance force exerted on the conveyed object 90 by the downstream portion of the conveyance path is larger than the conveyance resistance force exerted on the conveyed object 90 by the upstream portion of the conveyance path. On the other hand, the conveyed object 90 may be subjected to resistance by other means.
For example, the downstream portions 32b and 33b of the inner wall surfaces of the side guides 32 and 33 may be formed into irregularities by texturing or the like, and the conveyed object 90 may receive resistance from such irregularities.
The inner surface of the downstream portion 35b of the guide groove 35 may be unevenly formed by texturing or the like, and the article 91 of the conveyed object 90 may receive resistance from such unevenness.
The friction coefficients of the downstream portions 32b, 33b of the inner wall surfaces of the side guides 32, 33 may be larger than the friction coefficients of the upstream portions 32a, 33a, and the friction coefficients of the downstream portions 32b, 33b may gradually increase toward the downstream.
The friction coefficient of the inner surface of the downstream portion 35b of the guide groove 35 may be larger than the friction coefficient of the upstream portion 35a, and the friction coefficient of the downstream portion 35b may gradually increase toward the downstream.
By gradually decreasing the depth of the downstream portion 35b of the guide groove 35 toward the downstream, the downstream portion 35b may be inclined upward toward the downstream. Alternatively, the depth of the downstream portion 35b of the guide groove 35 may remain constant from upstream to downstream, and the downstream portion 35b may slope upward toward the downstream. In this case, the downstream portions of the conveying surfaces of the endless belts 53, 63 are also inclined upward so as to be parallel to the downstream portion 35b.
Resistance may be applied to the transported object 90 by blowing air from downstream to upstream in the second transport direction Y toward the transported object 90 being pushed on the downstream portion of the transport platform 31 .
A low-friction belt that runs in the opposite direction to the conveyance direction of the conveyed object 90 may be provided at the downstream portion of the upper surface of the conveyance platform 31, and resistance may be applied to the conveyed object 90 from the belt.
A high-friction belt that runs in the same direction as the conveyance direction of the conveyed object 90 at a speed lower than the conveyance speed of the conveyed object 90 is provided at the downstream portion of the upper surface of the conveyance table 31, and this belt provides resistance to the conveyed object 90. may be given.
When the transported object 90 passes between the downstream portions 32b and 33b of the inner wall surfaces of the side guides 32 and 33, the shutter mechanism removes obstacles such as baffles from the upper surface of the transport platform 31 or the inner wall surfaces of the side guides 32 and 33. By advancing the object, resistance may be applied to the transported object 90 from the obstacle.
The interval between the downstream portions of the side guides 32 and 33 may be narrower than the interval between the upstream portions. In that case, the distance between the downstream portions of the side guides 32 and 33 gradually decreases toward the downstream, so that the conveyance resistance force applied to the article 91 gradually increases.

(4) In the embodiment described above, the downstream device provided on the downstream side of the transfer device 30 is the packaging machine 80. Alternatively, instead of the packaging machine 80, a conveyor may be provided downstream of the transfer device 30. This conveyor conveys the object 90 at a constant speed without stopping, and the conveyance speed of the conveyor is equal to the traveling speed of the film 95 in the packaging machine 80.

(5) In the above embodiment, the speed of the pushing members 55 and 65 reaches the maximum speed after the entire transported object 90 is transferred onto the transport table 31. On the other hand, the speeds of the pushing members 55 and 65 may reach the maximum speed while the transported object 90 is being scraped out from the bucket 15 to the transport table 31.

(6) In the embodiment described above, the two push conveyors 50 and 60 are provided in parallel in the first conveyance direction X. On the other hand, three or more push conveyors may be provided in parallel in the first conveyance direction X.

(7) The downstream portions 32b, 33b of the inner wall surfaces of the side guides 32, 33 are erected perpendicularly to the plane defined by the first conveyance direction X and the second conveyance direction Y, similarly to the upstream portions 32a, 33a. The downstream portion 35b of the guide groove 35 may be formed parallel to the second transport direction Y, similarly to the upstream portion 35a. In this case, the article 91 of the conveyed object 90 that is being pushed does not fall into a shogi situation.

(8) The number of guide grooves 15b and the number of guide grooves 35 may be greater or less than the number of articles 91 of the objects 90 to be transported. When the number of guide grooves 15b and the number of guide grooves 35 are smaller than the number of articles 91 in the conveyed object 90, a plurality of articles 91 are placed against at least one guide groove 15b, and a plurality of articles 91 are placed against at least one guide groove 35. A plurality of articles 91 are propped up.

DESCRIPTION OF SYMBOLS 10... Conveyance machine 30... Transfer device 31... Conveyance stand 32, 33... Side guide 32a, 33a... Upstream part of the inner wall surface of a side guide 32b, 33b... Downstream part of the inner wall surface of a side guide 35... Guide groove 35a... Guide groove Upstream portion of 35b...Downstream portion of guide groove 50...First push conveyor 60...Second push conveyor 80...Wrapping machine 90...Object to be transported 91...Article

Claims (7)

A conveyance machine that intermittently conveys a plurality of conveyed objects arranged in a first conveyance direction in the first conveyance direction transfers the conveyed objects that have been conveyed to a sending position and temporarily stopped by the conveyance machine to the first conveyance direction. A transfer device that transfers the object to a downstream device in a second transfer direction perpendicular to the transfer direction,
a conveyance path provided along the second conveyance direction from the delivery position to the downstream device;
The objects are arranged in parallel in the first conveyance direction above the conveyance machine and the conveyance path, and the conveyed objects are sequentially conveyed to the delivery position by the conveyance machine from the delivery position to the downstream equipment. A first pushing conveyor and a second pushing conveyor,
The first push conveyor and the second push conveyor scrape out the object from the delivery position onto the conveyance path, and then push the object along the conveyance path to remove the object. Supplied from the conveyance path to the downstream equipment,
The speed of the first push conveyor when the first push conveyor scrapes the object from the delivery position to the conveyance path, and the first push conveyor scrapes the object from the conveyance path to the downstream equipment. faster than the speed of the first pushing conveyor when feeding;
The speed of the second push conveyor when the second push conveyor scrapes the object from the delivery position to the transport path, and the second push conveyor scrapes the object from the transport path to the downstream equipment. A transfer device that is faster than the speed of the second push conveyor when feeding. The conveying path is provided so that a conveying resistance force exerted on the conveyed object by a downstream portion of the conveying path is larger than a conveying resistance force exerted on the conveyed object by an upstream portion of the conveying path. 1. The transfer device according to 1. The conveyance path is
a conveyance table provided along the second conveyance direction from the delivery position to the downstream device;
a pair of side guides provided on both sides of the conveyance table along the second conveyance direction and protruding upward from both sides of the conveyance table;
The upstream portion of the inner wall surfaces of the side guides facing each other is perpendicular to the plane defined by the first conveyance direction and the second conveyance direction, and the downstream portion is perpendicular to the plane defined by the first conveyance direction and the second conveyance direction. The transfer device according to claim 1 or 2, wherein the transfer device is inclined in the same direction. 4. The transfer device according to claim 3, wherein the inclination angle of the downstream portion of the mutually opposing inner wall surfaces of the side guide gradually increases from upstream to downstream in the second conveyance direction. The object to be conveyed is composed of a plurality of articles that stand upright in a small end shape and are stacked in the first conveyance direction,
The conveyance platform has a plurality of guide grooves on an upper surface between the side guides that respectively guide the plurality of articles from the delivery position to the downstream device,
The upstream portion of the guide groove is formed parallel to the second conveyance direction, and the downstream portion is a side guide in which the downstream portion of the inner wall surface of the pair of side guides is tilted inward. 5. The transfer device according to claim 3, wherein the transfer device is formed obliquely toward. The speed of the first pushing conveyor when the first pushing conveyor supplies the object to be transported from the conveyance path to the downstream equipment is equal to or close to the speed of the downstream equipment,
Any one of claims 1 to 5, wherein the speed of the second push conveyor when the second push conveyor supplies the object from the conveyance path to the downstream equipment is equal to or approximates the speed of the downstream equipment. Transfer device according to paragraph 1. The transfer device according to any one of claims 1 to 6, wherein the first push conveyor and the second push conveyor each have an independent power source.

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