JP5644445B2 - Tray unloading device, tray loading device, and tray used in these tray unloading device and tray loading device - Google Patents

Description

  The present invention is an apparatus for delivering articles such as containers in two roller conveyors, and in particular, a tray on which articles conveyed by one roller conveyor are placed on a tray conveyed by one roller conveyor. The present invention relates to a loading device and a tray lowering device for lowering articles on the tray onto the other roller conveyor.

As a conventional apparatus for delivering an article, for example, Patent Document 1 discloses an apparatus for transferring a container (Oricon; an example of an article) with a pusher between two roller conveyor apparatuses arranged in parallel. Yes. In this apparatus, a driving sprocket and a driven sprocket are arranged between the conveying rollers of the roller conveyor device, on both sides in the left-right direction perpendicular to the container conveying direction by the roller conveyor device, and below the container conveying surface by the roller conveyor device. 2 sets are arranged at a predetermined interval in the transport direction, a drive chain is wound between the two sets of sprockets, and the drive chain rotates between the drive chains to protrude above the transport roller. In this way, the payout member (pusher) is stretched over and fixed in a vertical posture.
With this configuration, the pusher protrudes and acts on the container conveyed to the roller conveyor device, and the pusher moves with the rotation of the drive chain, so that the container moves and moves to the other roller conveyor device. Reprinted.

  Further, Patent Document 2 discloses an apparatus in which a pin-like (bar-like) payout member (pusher) is vertically attached to each drive chain instead of the payout member spanned over the drive chain. These pushers normally stand by below the conveyance rollers, and when the articles are transferred between the roller conveyors, the pushers protrude on the upper surface of the conveyance rollers and move the articles by acting.

Japanese Patent No. 4218543 Japanese Utility Model Publication No. 05-14028

  However, in the configuration of the article delivery device according to Patent Document 1 or Patent Document 2, since the payout member (pusher) is vertically attached to the drive chain (because it is fixed), the final movement of the article is performed. At the stage, the tip of the pusher was caught by the container, and there was a risk that the container would jump or be displaced. Further, at the final stage of the pushing operation, the dispensing member (pusher) sinks downward, so that there is a possibility that the container cannot be pushed to the end and the container cannot be transferred to a predetermined position.

  Therefore, the present invention can eliminate the possibility that the tip of the pusher gets caught in the container (article) at the final stage of the pushing operation by the pusher, and the container jumps or shifts in position. An object of the present invention is to provide a tray unloading device, a tray loading device, and a tray used in the tray unloading device and the tray loading device that can reliably transfer the container to a predetermined position while maintaining the force of pushing the container. .

In order to achieve the above-described object, the invention according to claim 1 of the present invention is configured such that the article conveyed by the article conveying roller conveyor device jumps out from between the conveying rollers of the article conveying roller conveyor device, A tray mounting device that is placed on a tray that has been transported by a roller conveyor device for tray transportation by a pusher that moves in a lateral direction perpendicular to the transportation direction of the article,
Driving sprockets and driven sprockets disposed in the vertical direction in the left-right direction between the conveying rollers of the article conveying roller conveyor apparatus below the conveying surface of the articles by these conveying rollers, respectively, A roller chain wound and spun between sprockets, and a lever device for connecting the pusher to the roller chain;
The lever device includes a first link and a second link, and a central portion of the first link is rotatably connected to one roller of the roller chain, and is positioned outside a rotation surface of the roller chain. The pusher is fixed to one end portion of the first link, and the one end portion of the second link is rotatable to the other end portion of the first link located inward of the rotation surface of the roller chain. The other end of the second link is connected to one roller of the roller chain located behind the one roller of the roller chain to which the first link is connected, and one end of the second link is in a state in which said roller chain is connected to the other end of the first link is moved horizontally, maintaining a vertical position the pusher against the roller chain, the roller chain folding In minutes, with the rotation of the roller chain, inclined in the rotational direction rear, left substantially vertical position, characterized in that one roller of the roller chain as sink down, and is rotatably connected It is what.

According to the above configuration, the pusher is attached to the roller chain by the lever device, so that the posture perpendicular to the roller chain is maintained in a state where the roller chain is moved horizontally, and the article is maintained in this perpendicular posture. The article moves along with the movement of the pusher by the roller chain, and is placed on the tray conveyed by the tray conveyor roller conveyor device.
In addition, in the folded portion of the pusher where the roller chain to which the pusher is connected is applied to the sprocket (drive sprocket or driven sprocket) on the roller conveyor device side of the tray transport, the pusher is connected to the first link and the first link as the roller chain rotates. By the link action of the two links, it tilts backward in the rotational direction and sinks down between the conveying rollers while maintaining a substantially vertical posture. Therefore, at the final stage when the article is placed on the tray, the possibility that the tip of the pusher is caught by the article and the article jumps or is displaced is eliminated.

  The invention according to claim 2 is the invention according to claim 1, wherein the driving sprocket has a posture in which a tip of a pusher that finally acts on a side surface of an article transferred to the tray is substantially vertical. It is arrange | positioned in the position which becomes.

  According to the above configuration, depending on the position of the drive sprocket, the tip of the pusher that sinks by the action of the lever device finally acts on the side surface of the article transferred to the tray, so that the article can be reliably placed on the tray.

According to a third aspect of the present invention, an article on a tray that has been transported by a tray transporting roller conveyor device can be used for transporting a tray through a bottom portion of a side surface portion of the tray and a groove provided on a bottom surface connected thereto. A tray lowering device that pops out from between the conveying rollers of the roller conveyor device and moves down to the roller conveyor device for conveying articles by a pusher that moves in the left-right direction perpendicular to the conveying direction of the tray,
Driving sprockets and driven sprockets disposed in the vertical direction in the left-right direction between the conveying rollers of the tray conveying roller conveyor apparatus below the conveying surface of the tray by these conveying rollers, and both A roller chain wound and spun between sprockets, and a lever device for connecting the pusher to the roller chain;
The lever device includes a first link and a second link, and a central portion of the first link is rotatably connected to one roller of the roller chain, and is positioned outside a rotation surface of the roller chain. The pusher is fixed to one end portion of the first link, and the one end portion of the second link is rotatable to the other end portion of the first link located inward of the rotation surface of the roller chain. The other end of the second link is connected to one roller of the roller chain located behind the one roller of the roller chain to which the first link is connected, and one end of the second link is in a state in which said roller chain is connected to the other end of the first link is moved horizontally, maintaining a vertical position the pusher against the roller chain, the roller chain folding In minutes, with the rotation of the roller chain, inclined in the rotational direction rear, left substantially vertical position, characterized in that one roller of the roller chain as sink down, and is rotatably connected It is what.

According to the above configuration, the pusher is attached to the roller chain by the lever device, so that the posture perpendicular to the roller chain is maintained in a state where the roller chain is moved horizontally, and the tray is maintained in this perpendicular posture. The article acts on the side surface of the article on the tray through the groove, and the article moves along with the movement of the pusher by the roller chain, and is lowered to the article conveyor roller conveyor device.
Further, in the folded portion of the pusher where the roller chain to which the pusher is connected is applied to the sprocket (drive sprocket or driven sprocket) on the article conveying roller conveyor apparatus side, the pusher moves with the first link and the second link as the roller chain moves. By the link action of the link, it tilts backward in the rotational direction and sinks below between the transport rollers while maintaining a substantially vertical posture. Therefore, at the final stage when the article is unloaded from the tray, the possibility that the tip of the pusher is caught by the article and the article jumps or is displaced is eliminated.

  Further, the invention according to claim 4 is the invention according to claim 3, wherein the driving sprocket has an end of a pusher that finally acts on a side surface of the article at the end of the groove of the tray. It is characterized by being arranged in a vertical position.

  According to the said structure, the front-end | tip of a pusher which sinks by the effect | action by a lever apparatus finally acts on the side surface of an article | item according to the position of a drive sprocket, and an article | item can be reliably dropped from a tray.

The invention according to claim 5 is a tray for loading and transporting articles, and the article transporting roller conveyor apparatus or the tray transporting apparatus between the tray transporting roller conveyor apparatus and the article transporting roller conveyor apparatus . A tray that is loaded and unloaded by a pusher that jumps out from between the conveying rollers of the roller conveyor device and moves in the left-right direction perpendicular to the conveying direction of the article or tray ,
The pusher is composed of a first link and a second link on a roller chain wound around a driving sprocket and a driven sprocket arranged between the conveying rollers of the article conveying roller conveyor device or the tray conveying roller conveyor device. When the roller chain is moved horizontally by the action of the first link and the second link of the lever device, the posture perpendicular to the roller chain is maintained. Acts on the side of the article in the posture, and at the folded part of the roller chain, it tilts backward in the rotational direction as the roller chain rotates, and sinks down between the conveying rollers while maintaining a substantially vertical posture The plate-shaped bottom surface portion on which the article is placed and the roller conveyor device for conveying the article are located on the opposite side The end face portion, and a side surface portion provided upright in a vertical position, an end of the bottom portion located in said article carrying roller conveyor apparatus, provided with a recess to avoid contact of the pusher, The bottom portion of the side surface portion and the bottom surface portion connected thereto are provided with grooves for the pusher to protrude and move .

According to the above configuration, the container is pushed down by the two pins protruding from the bottom portion of the side surface portion and the grooves of the bottom surface portion connected thereto, the container is lowered from the tray, and the concave portion at the end portion of the bottom surface portion is provided. Thus, the container can be pushed over the tray without the tips of the two pins coming into contact with the tray, and the product can be placed reliably.

  In the tray loading device of the present invention, in the folded portion of the pusher where the roller chain, to which the pusher is connected, is applied to the sprocket (drive sprocket or driven sprocket) on the tray conveyor roller conveyor device side, the pusher moves with the rotation of the roller chain. In the final stage where the article is placed on the tray by tilting backward in the rotational direction by the link action of the first link and the second link and sinking downward between the conveying rollers while maintaining a substantially vertical posture, This has the effect of eliminating the possibility that the tip of the pusher gets caught on the article and the article jumps or shifts in position.

  In the tray unloading device of the present invention, the pusher is used to turn the roller chain at the turn-back portion of the pusher where the roller chain to which the pusher is connected is applied to the sprocket (drive sprocket or driven sprocket) on the article conveyor roller conveyor device side. Accordingly, the article is lowered from the tray by being inclined backward by the link action of the first link and the second link and sinking downward between the conveying rollers while maintaining a substantially vertical posture. The tip of the pusher is caught on the article, so that it is possible to eliminate the possibility that the article jumps or is displaced.

In addition, the tray of the present invention is provided with a recess at the end of the bottom surface, so that the pusher does not come into contact with the tray, so that the article can be pushed over the tray and the product can be loaded reliably. have.
In addition, the tray of the present invention is provided with a groove for the pusher to jump out and move at the bottom of the side surface and the bottom part connected to the bottom, so that the article can be lowered from the tray by pushing the article with the pusher that jumps out of the groove. It has the effect of being able to.

It is a side view of the tray mounting apparatus in embodiment of this invention. It is a top view of the tray mounting apparatus. It is a front view of the tray mounting apparatus. It is a figure which shows the structure of the chain and lever apparatus of the tray mounting apparatus, (a) is front sectional drawing, (b) is a side view. It is a perspective view of the tray in embodiment of this invention, (a) is a perspective view from front diagonal, (b) is a perspective view from back diagonal. It is a side view of the tray lowering apparatus in the embodiment of the present invention. It is a top view of the tray lowering apparatus. It is a front view of the tray lowering device.

Hereinafter, embodiments of the present invention will be described with reference to the drawings.
As shown in FIGS. 3 and 7, a container transport roller conveyor device (an example of an article transport roller conveyor device) 12 that transports a container (an example of an article) 11, and a tray transport roller conveyor device that transports a tray 13. 14 are arranged close to each other so that the transport direction of the container 11 and the transport direction of the tray 13 are parallel to each other. Hereinafter, a direction perpendicular to the transport direction is referred to as a left-right direction.
Further, the container transporting roller conveyor device 12 is provided with a first guide (guide member) 15A for guiding the container 11 to the tray transporting roller conveyor device 14 and defining the position in the left-right direction. The roller conveyor device 14 is provided with a second guide (guide member) 15B for guiding the tray 13 toward the container conveying roller conveyor device 12 and defining the position in the left-right direction.

The tray loading device 16 of the present invention is a device for transferring (loading) the container 11 conveyed by the container conveying roller conveyor device 12 onto the tray 13 conveyed by the tray conveying roller conveyor device 14. The tray lowering device 17 of the present invention is a device for transferring (lowering) the container 11 on the tray 13 conveyed by the tray conveying roller conveyor device 14 to the container conveying roller conveyor device 12.
Further, both the tray loading device 16 and the tray lowering device 17 protrude from between the conveying rollers 12A and 14A of the roller conveyor devices 12 and 14, and are rod-shaped pins made of round steel that moves in the left-right direction (an example of a pusher). 19 is configured to push the container 11 (details will be described later).

[tray]
First, the structure of the tray 13 will be described.
As shown in FIG. 5, the tray 13 has a plate-shaped bottom surface portion 21 on which the container 11 is placed and a container-conveying roller conveyor at the end of the bottom surface portion 21 located on the opposite side of the container-conveying roller conveyor device 12. And a side surface portion 22 erected in a vertical posture toward the device 12. The side surface portion 22 is formed in an L shape when viewed from the side, and the surface facing the container conveying roller conveyor device 12 is open.
Further, two concave portions (notches) 24 for avoiding contact with the pins 19 are provided in the end portion of the bottom surface portion 21 located on the container conveyor roller conveyor device 12 side in the transport direction (front-rear direction) of the tray 13, and the side surface portion. Two grooves 25 are provided in the conveyance direction (front-rear direction) of the tray 13 in the bottom portion 22 and the bottom portion 21 connected to the bottom portion 22 in order for the pins 19 to jump out and move.
Further, support portions 26 that are bent upward are provided on both side portions of the bottom surface portion 21, so that the placed container 11 is not displaced in the transport direction of the tray 13 by these support portions 26.

  With such a configuration of the tray 13, the container 11 is pushed by the two pins 19 protruding from the bottom portion of the side surface portion 22 and the respective grooves 25 of the bottom surface portion 21 connected thereto, and the container 11 is lowered from the tray 13. By providing the concave portion 24 at the end of the portion 21, the container 11 can be pushed over the tray 13 without the tips of the two pins 19 coming into contact with the tray 13, and the product can be loaded reliably. .

[Tray loading device]
Next, the tray loading device 16 will be described. FIG. 1 is a side view of a tray loading device 16 according to an embodiment of the present invention, FIG. 2 is a plan view, and FIG. 3 is a front view.
The tray loading device 16 is
A driving sprocket 31 and a driven sprocket 32 arranged in a vertical posture in the horizontal direction between the conveying rollers 12A of the container conveying roller conveyor device 12 below the conveying surface of the container 11 by the conveying rollers 12A;
A roller chain 33 wound and rotated between the sprockets 31 and 32;
Lever device 34 for connecting pin 19 to roller chain 33
Two sets are provided at intervals in the transport direction.
Further, the two drive sprockets 31 and the two driven sprockets 32 are respectively fixed to the same rotation shaft, and the two drive sprockets 31 are simultaneously rotated by rotating the rotation shafts of the two drive sprockets 31. An electric motor 35 is provided.
The pair of pins 19 are symmetrically attached to the roller chains 33 by lever devices 34, respectively.

  The components of the roller chain 33 are well known, and as shown in FIG. 4, the components of the roller chain 33 include a cylindrical roller 37, an elongated cylindrical bush 38 that passes through the center of the roller 37, and 2 Both ends of each bushing 38 of each of the adjacent rollers 37 are press-fitted, and an inner plate 39 connecting the two rollers 37 and the (two) rollers 37 connected by the inner plate 39 are further connected. The outer plate 40 to be connected, the roller 37, the bush 38, and the inner plate 39 are penetrated, both ends are caulked to the outer plate 40, and the shaft 41 is connected in an annular shape. 38 and the inner plate 39 "freely rotate, and the" bush 38 and inner plate 39 "freely rotate with respect to the" outer plate 40 and shaft 41 ".

Each lever device 34 includes a first link 43 and a second link 44.
As shown in FIG. 4, the first link 43 is located outside the rotation surface of the roller chain 33, and has a plate-like upper portion on which the pins 19 are suspended, and roller chains from both ends of the upper portion. 33, a first member 46 having a U-shaped cross section formed by a plate-like side portion suspended from the side portion of the roller 37, and both sprockets 31 at both ends of the side portion of the first member 46, A cross section fixed so as to avoid contact with 32 is formed from an L-shaped second member 47.
Both side portions of the first member 46 corresponding to the center portion of the first link 43 are caulked to the shaft 41 of one roller 37A of the roller chain 33, and are rotatably connected to the one roller 37A. The pin 19 is fixed to the upper part of the first member 46 corresponding to one end of the first link 43 located outside the surface.

The second link 44 is formed from a plate-shaped bar.
One end portion of the second link 44 is rotatably connected to an outer side portion of the second member 47 corresponding to the other end portion of the first link 43 located on the inner side of the rotation surface of the roller chain 33. The other end of the second link 44 is one roller of the roller chain 33 positioned behind the one roller 37A of the roller chain 33 to which the first link 43 is connected, and one end of the second link 44. Is connected to the other end portion of the first link 43, and the shaft of one roller 37B of the roller chain 33 that can maintain the pin 19 in a posture perpendicular to the roller chain 33 in a state where the roller chain 33 is moved horizontally. 41 (this shaft 41 is extended outward until the side of the first member 46 is located) and is rotatably connected.

"Linking action"
Thus, the first link 43 and the second link 44 are rotatably connected to the shafts 41 of the rollers 37A and 37B of the roller chain 33, and the first link 43 and the second link constituting the lever device 34 as described above. The operation (link action) of the pin 19 by the link 44 will be described.
The pin 19 maintains a posture perpendicular to the roller chain 33 when the roller 37A to which the first link 43 is connected and the roller 37B to which the second link 44 is connected are horizontally moved by the roller chain 33. Then, it moves as the roller chain 33 moves.
When the roller 37A to which the first link 43 is connected is applied to the drive sprocket 31 on the tray 13 side, as shown by the locus in FIG. 1, that is, when the pin 19 is applied to the folded portion by the drive sprocket 31, the roller chain 33 With the rotation of the first link 43, the other end portion (second member 47) of the first link 43 is pushed by the second link 44 so that the first link 43 is tilted backward in the rotation direction. The posture is inclined rearward in the direction (posture close to the vertical in the final stage of contact with the container 11), and after passing the folded portion, the posture is returned to the vertical posture.

  Further, the two drive sprockets 31 are arranged such that the tip of the pin 19 that finally acts on the side surface of the container 11 that has been transferred to the tray 13 on the side of the tray conveyor roller conveyor device 14 side is the first link. 43 and the second link 44, the driving sprocket is arranged in a position that is almost vertical, and does not come into contact with the concave portion 24 of the tray 13 but sinks below the tray 13 near the concave portion 24. By the position of 31, the tip of the pin 19 finally acts on the side surface of the container 11 transferred to the tray 13, so that the container 11 can be reliably placed on the tray 13.

The operation of the tray loading device 16 configured as described above will be described.
A predetermined transfer position guided by the first guide 15A by the container transport roller conveyor device 12 for transporting the container 11 (the installation position of the tray mounting device 16, the position where the pins 19 can act on the container 11 in a vertical posture). Then, the container 11 is conveyed and stopped, and the tray conveyor 13 conveys the tray 13 by being guided by the second guide 15B to a predetermined transfer position (transfer position by the tray loader 16) by the tray conveyor roller conveyor device 14. When it comes, the two drive sprockets 31 are rotated by the electric motor 35 for a time during which the roller chain 33 makes a half rotation.
As the roller chains 33 are rotated by the two drive sprockets 31, the two pins 19 jump out onto the transport roller 12 </ b> A and are on the side surface of the container 11 (the side surface opposite to the tray transport roller conveyor device 14). Contact.

  As described above, the pin 19 is connected to the roller chain 33 in a state where the roller 37A to which the first link 43 is connected and 37B to which the second link 44 is connected are moved horizontally. A vertical posture is maintained, and this vertical posture acts on the side surface of the container 11. The container 11 moves along with the movement of the pin 19 by the roller chain 33 and is placed on the tray 13.

When the roller 37A to which the first link 43 is connected, that is, the pin 19 is applied to the folded portion of the pin 19 that is applied to the drive sprocket 31 on the tray 13 side, as shown in the locus in FIG. Along with the rotation of the chain 33, the link action described above is inclined backward in the rotation direction, contacts (pushes) the container 11 in a posture close to the vertical, and the lower part between the conveying rollers 14 </ b> A of the tray conveying roller conveyor device 14. Sink into. At this time, by providing the recess 24 in the tray 13 (bottom surface portion 21), the container 11 is pushed on the tray 13 without the tip of the pin 19 coming into contact with the tray 13. Further, when the container 11 is placed on the tray 13, the tray 13 is supported by the second guide 15B so as not to move left and right, so that it is avoided that the position in the left and right direction is shifted.
When the container 11 is placed on the tray 13 of the tray conveying roller conveyor device 14, the next container 11 is conveyed to a predetermined transfer position by the container conveying roller conveyor device 12, and also by the tray conveying roller conveyor device 14. The tray 13 on which the container 11 is placed is conveyed.

  As described above, according to the present embodiment, when the pin 19 is applied to the folded portion by the action (link action) of the lever device 34, the pin 19 is inclined backward in the turning direction along with the turning of the roller chain 33. By contacting (pushing) the container 11 in a posture close to that, the tip of the pin 19 may be caught by the container 11 at the final stage when the container 11 is placed on the tray 13, and the container 11 may jump or be displaced. Can be eliminated.

  Further, according to the present embodiment, the tip of the pin 19 sunk by the action of the lever device 34 depending on the position of the drive sprocket 31 finally acts on the side surface of the container 11 transferred to the tray 13. By providing the recess 24 in the (bottom surface portion 21), the container 11 can be pushed onto the tray 13 without the tip of the pin 19 coming into contact with the tray 13, and the container 11 can be reliably placed on the tray 13. it can.

  Further, according to the present embodiment, the pusher is composed of the pins 19, so that the pusher is not easily caught by the container 11, and the two pins 19 are attached symmetrically to the roller chain 33, so that the roller chain 33 is half-finished. Each time it rotates, the next container 11 can be conveyed by the container conveying roller conveyor device 12, and the working efficiency can be improved.

[Tray unloading device]
Next, the tray lowering device 17 will be described. FIG. 6 is a side view of the tray lowering device 17 in the embodiment of the present invention, FIG. 7 is a plan view, and FIG. 8 is a front view.
The tray lowering device 17
Between the conveying rollers 14A of the roller conveyor device 14 for tray conveyance, below the conveying surface of the tray 13 by these conveying rollers 14A, respectively in the left and right direction perpendicular to the conveying direction of the tray 13 by the roller conveyor device 14 for tray conveyance, A drive sprocket 51 and a driven sprocket 52 arranged in a vertical attitude;
A roller chain 53 wound and rotated between the sprockets 51 and 52;
Two sets of lever devices 54 having the same configuration as the lever device 34 of the tray loading device 16, which couple the pins 19 to the roller chain 53, are provided at intervals in the transport direction.
Further, the two drive sprockets 51 and the two driven sprockets 52 are respectively fixed to the same rotation shaft, and the two drive sprockets 51 are simultaneously rotated by rotating the rotation shafts of the two drive sprockets 51. An electric motor 55 is provided.
The pair of pins 19 are symmetrically attached to the roller chains 53 by lever devices 54, respectively.
As an auxiliary device,
A rotating roller 56 disposed between the container transport roller conveyor device 12 and the tray transport roller conveyor device 14 and driven by the electric motor 55 to transfer the container 11 to the container transport roller conveyor device 12.
It has.

Further, the two drive sprockets 51 are arranged so that the tips of the pins 19 that finally act on the side surface of the container 11 at the end of the groove 25 of the tray 13 are substantially vertical due to the link action of the first link 43 and the second link 44. It is arranged at a position that sinks downward near the end of the groove 25 of the tray 13 without contacting the tray 13. The position of the drive sprocket 51 ensures that the tip of each pin 19 finally acts on the side surface of the container 11 moved to the end of the groove 25 of the tray 13 and can push the container 11.
Note that the operation (link action) of the lever device 54 has the same configuration as the lever device 34 of the tray loading device 16, and thus the description thereof is omitted.

The operation of the tray lowering device 17 configured as described above will be described.
When the tray 13 on which the container 11 is loaded is conveyed to a predetermined transfer position (transfer position by the tray lowering device 17) guided by the second guide 15B by the roller conveyor device 14 for tray transfer, the electric motor 55 As a result, the two drive sprockets 51 and the rotating roller 56 are rotated for a time during which the roller chain 53 makes a half rotation.
As each roller chain 53 is rotated by the two drive sprockets 51, the two pins 19 jump out onto the conveying roller 14A, pass through the bottom of the side surface portion 22 of the tray 13, and enter the grooves 25 of the bottom surface portion 21, respectively. It contacts the side surface of the container 11 (the side surface opposite to the container conveyor roller conveyor device 12).

  As described above, the pin 19 is connected to the roller chain 53 in a state where the roller 37A connected to the first link 43 and 37B connected to the second link 44 are moved horizontally. A vertical posture is maintained, and the vertical posture acts on the side surface of the container 11 and moves along the groove 25. The container 11 moves along with the movement of the pin 19 by the roller chain 53, and the tray 13 Will be taken down from.

When the roller 37A to which the first link 43 is connected, that is, the pin 19 is applied to the folded portion of the pin 19 that is applied to the drive sprocket 51 on the container conveyor roller conveyor device 12 side, as shown by the locus in FIG. As the roller chain 53 rotates, the pin 19 inclines backward in the rotation direction by the above-described link action, contacts (pushes) the container 11 in a posture close to vertical, and at the end of the groove 25 of the tray 13, It sinks down between the conveyance rollers 14A of the roller conveyor device 14 for tray conveyance. At this time, the container 11 is pushed without the tip of the pin 19 contacting the end of the groove 25.
When the container 11 is moved onto the rotating roller 56, the force of the rotating roller 56 is also applied, and the container 11 is moved onto the container conveying roller conveyor device 12. At this time, the transfer position of the container 11 in the left-right direction is defined by the first guide 15A.

  When the container 11 is moved to the container transporting roller conveyor device 12, the tray transporting roller conveyor device 14 transports the next tray 13 on which the container 11 is placed at a predetermined transfer position, and the container transporting roller conveyor. The transferred container 11 is transported by the device 12.

  As described above, according to the present embodiment, when the pin 19 is applied to the folded portion due to the action (link action) of the lever device 54, the pin 19 is inclined backward in the turning direction along with the turning of the roller chain 53. By contacting (pushing) the container 11 in a posture close to that, the tip of the pin 19 may be caught by the container 11 at the final stage when the container 11 is lowered from the tray 13, and the container 11 may jump or be displaced. Can be eliminated.

  In addition, according to the present embodiment, the tip of the pin 19 sunk by the action of the lever device 54 depending on the position of the drive sprocket 51 finally acts on the side surface of the container 11 on the tray 13, and the end of the groove 25. The container 11 on the tray 13 can be pushed without the tip of the pin 19 coming into contact with the container 19, and the container 11 can be reliably lowered onto the container conveyor roller conveyor device 12.

  Further, according to the present embodiment, the pusher is composed of the pins 19, so that the pusher is not easily caught by the container 11, and the two pins 19 are symmetrically attached to the roller chain 53, so that the roller chain 53 is half Each time it rotates, the tray 13 on which the next container 11 is placed can be transported by the tray transporting roller conveyor device 14, and the working efficiency can be improved.

In the present embodiment, both the tray loading device 16 and the tray lowering device 17 are configured to push the container 11 by two pins 19 provided in the transport direction, but the number of pins 19 is It can be increased or decreased depending on the weight of the working container 11. For example, when the container 11 is light, only one pin 19 is provided and the container 11 is pushed. At this time, it is needless to say that the recesses 24 and the grooves 25 provided in the tray 13 may be one each.
In this embodiment, the tray 13 is provided with the groove 25. However, if the tray 13 has sufficient strength and can transport the container 11, the groove 25 is formed at the end of the bottom plate portion 21 (container transporting). It is also possible to form a groove 25 that extends to both ends of the roller conveyor device 12 side. At this time, the drive sprocket 51 of the tray lowering device 17 is moved to the container conveyor roller conveyor device 12 side so that the pin 19 acts on the container 11 moved to the container conveyor roller conveyor device 12. In addition, the rotating roller 56 can be dispensed with.
In the present embodiment, both the recess (notch) 24 and the groove 25 are provided in the tray 13. However, when the operator performs the operation of lowering the container 11 from the tray 13 (the tray unloading device 17 is not used). In the case), the groove 25 of the tray 13 can be made unnecessary, and when the operator performs the loading operation of the container 11 on the tray 13 (when the tray loading device 16 is not used), the tray 13 The recess (notch) 24 can be made unnecessary.
In the present embodiment, the electric motors 35 and 55 are provided for each tray loading device 16 or tray lowering device 17, but one electric motor 35, 55 is provided for each of the plurality of tray loading devices 16 or tray lowering devices 17. It may be.
In the present embodiment, the article is a container 11 made of a container, but is not limited to a container and may be a cardboard box or the like.

DESCRIPTION OF SYMBOLS 11 Container 12 Roller conveyor apparatus for container conveyance 13 Tray 14 Roller conveyor apparatus for tray conveyance 16 Tray loading apparatus 17 Tray lowering apparatus 19 Pin 21 Bottom face part 22 Side face part 24 Recessed part (notch)
25 Groove 31, 51 Drive sprocket 32, 52 Driven sprocket 33, 53 Roller chain 34, 54 Lever device 35, 55 Electric motor 43 First link 44 Second link

Claims (5)

Roller conveyor for tray conveyance by a pusher that jumps out the articles conveyed by the roller conveyor apparatus for article conveyance from between the conveyance rollers of the roller conveyor apparatus for article conveyance and moves in the left-right direction perpendicular to the conveyance direction of the articles A tray loading device for placing on a tray that has been transported by the device,
A driving sprocket and a driven sprocket disposed between the conveying rollers of the article conveying roller conveyor device, in the lower part of the conveying surface of the article by the conveying rollers, facing each other in the vertical direction in the left-right direction;
A roller chain wound and rotated between these two sprockets;
A lever device for connecting the pusher to the roller chain;
The lever device is composed of a first link and a second link,
The central portion of the first link is rotatably connected to one roller of the roller chain,
The pusher is fixed to one end portion of the first link located outside the rotation surface of the roller chain,
One end of the second link is rotatably connected to the other end of the first link located inside the rotation surface of the roller chain,
The other end of the second link is one roller of a roller chain that is positioned behind the one roller of the roller chain to which the first link is connected, and one end of the second link is the first link. In a state where the roller chain is connected to the other end of the link and moved horizontally, the pusher is maintained in a vertical position with respect to the roller chain. And a tray mounting device that is rotatably connected to one roller of a roller chain so as to sink downward while maintaining a substantially vertical posture . 2. The tray loading device according to claim 1, wherein the driving sprocket is disposed at a position where a tip of a pusher that finally acts on a side surface of an article transferred to the tray assumes a substantially vertical posture. . Articles on the tray transported by the tray transport roller conveyor device are ejected from between the transport rollers of the tray transport roller conveyor device through the bottom of the side surface of the tray and the groove provided on the bottom surface. , A tray lowering device that lowers to an article conveying roller conveyor device by a pusher that moves in a lateral direction perpendicular to the tray conveying direction,
A driving sprocket and a driven sprocket disposed opposite to each other in the vertical direction in the left-right direction between the conveying rollers of the tray conveying roller conveyor device, below the conveying surface of the tray by these conveying rollers;
A roller chain wound and rotated between these two sprockets;
A lever device for connecting the pusher to the roller chain;
The lever device is composed of a first link and a second link,
The central portion of the first link is rotatably connected to one roller of the roller chain,
The pusher is fixed to one end portion of the first link located outside the rotation surface of the roller chain,
One end of the second link is rotatably connected to the other end of the first link located inside the rotation surface of the roller chain,
The other end of the second link is one roller of a roller chain that is positioned behind the one roller of the roller chain to which the first link is connected, and one end of the second link is the first link. In a state where the roller chain is connected to the other end of the link and moved horizontally, the pusher is maintained in a vertical position with respect to the roller chain. And a tray lowering device, wherein the tray lowering device is rotatably connected to one roller of a roller chain so as to sink downward while maintaining a substantially vertical posture . 4. The drive sprocket is disposed at a position where a tip end of a pusher finally acting on a side surface of the article is in a substantially vertical posture at a terminal end of the groove of the tray. Tray unloader. A tray for loading and transporting articles, and jumps out between the roller conveyor apparatus for conveying the articles and the roller conveyor apparatus for conveying the articles from between the roller conveyor apparatuses for conveying the articles or the roller conveyor apparatuses for conveying the tray. A tray in which loading and unloading of articles is performed by a pusher that moves in the left-right direction perpendicular to the conveying direction of the articles or trays ,
The pusher is composed of a first link and a second link on a roller chain wound around a driving sprocket and a driven sprocket arranged between the conveying rollers of the article conveying roller conveyor device or the tray conveying roller conveyor device. When the roller chain is moved horizontally by the action of the first link and the second link of the lever device, the posture perpendicular to the roller chain is maintained. Acts on the side of the article in the posture, and at the folded part of the roller chain, it tilts backward in the rotational direction as the roller chain rotates, and sinks down between the conveying rollers while maintaining a substantially vertical posture Configured,
A plate-like bottom surface for placing the article;
A side portion erected in a vertical posture at an end of the bottom portion located on the opposite side of the article conveying roller conveyor device;
A recess for avoiding the contact of the pusher is provided at an end of the bottom surface portion located on the article conveyor roller conveyor side, and the pusher protrudes from the bottom portion of the side surface portion and the bottom surface portion connected thereto. Providing a groove to move
Tray characterized by.

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