JP4151203B2 - Article stacking device - Google Patents

Description

[0001]
[Field of the Invention]
The present invention relates to a stacking device such as a palletizer, and more particularly to stacking upper and lower articles together.
[0002]
[Prior art]
As a device for regularly stacking articles on pallets, etc., picking articles one layer at a time on a movable conveyor, loading and unpalletizing articles from a movable conveyor onto a pallet, and vacuuming articles one layer at a time There are things such as picking up by picking up and stacking items on a pallet. These palletizers are not suitable for plastic cases such as P boxes for transporting and storing bottles of beer, sake, soy sauce and the like. It is difficult to vacuum-absorb a plastic case with beer bottles on it, and it is heavy, and beer bottles are easy to break, making them unsuitable for loading on movable conveyors.
[0003]
[Problems of the prior art]
The inventors have examined an apparatus suitable for stacking plastic cases for transporting and storing beer bottles and the like. In these plastic cases, a protrusion for fitting with the lower plastic case is provided at the bottom of the case. However, when plastic cases are mechanically stacked, the protruding portion may not fit into the lower case, and the cases become unstable when stacked.
[0004]
[Problems of the Invention]
A basic problem of the present invention is to securely fit and stack upper and lower articles.
An additional object of the invention of claim 3 is to provide a specific structure of the entire stacking apparatus.
[0005]
[Structure of the invention]
The present invention is an apparatus for vertically stacking articles having fitting parts, the means for stacking the articles up and down, a hook for hooking and holding the irregularities on the side of the upper article, and an upper part A pusher for shifting the upper article in the horizontal direction and fitting it to the lower article by pressing the side of the article in the horizontal direction, and holding the upper article with the hook. The article stacking apparatus is characterized in that when the pusher is opened and closed a plurality of times and the side face of the article is pushed when the pusher is closed, the article is fitted to the lower article .
[0006]
Preferably, each of the upper article and the lower article comprises a plurality of articles,
Each of the hook and the pusher is disposed around the four layers of the upper article.
[0007]
Particularly preferably, a carriage that moves in the horizontal direction is provided, a hook and a pusher are arranged on the bottom surface, the upper article is held and conveyed by the hook, and an elevator is provided to raise the lower article. Then, the upper article is overlapped with the lower article, and the upper article is held by the hook while being pushed by the pusher (Claim 3).
[0008]
[Operation and effect of the invention]
In the present invention, after the articles are stacked one on top of the other, the pusher is opened and closed a plurality of times in a state where the unevenness on the side surface of the article is hooked and held, and the article is fitted to the lower article by pushing the article in the horizontal direction. Since the article is hooked and held by the hook, when the pusher is opened and closed and pushed, it is displaced in the horizontal direction and is fitted into the lower article. For this reason, articles can be securely fitted and stacked.
[0009]
In addition, the upper article and the lower article each form a layer composed of a plurality of articles, and the hook and the pusher are arranged around the four layers of the upper article, and the upper and lower articles are fitted to each layer. Can be matched.
[0010]
In the invention of claim 3, a hook and a pusher are provided on the bottom surface of the carriage that moves in the horizontal direction, and the article is carried while being hooked and held by the hook, and the lower article is placed on the lifting platform and raised. While holding the upper article with a hook, push it in the horizontal direction with a pusher and fit it to the lower article. If it does in this way, goods can be picked with a trolley | bogie and can be piled up on a raising / lowering stand (Claim 3).
[0011]
【Example】
1 to 4 show an embodiment of the palletizer 2 as an example. Although the palletizer 2 regularly stacks articles on a pallet, the present invention is not limited to the palletizer, and may stack articles on a place other than the pallet. Reference numerals 4, 5, and 6 are support columns of the palletizer 2, and 7 is a ceiling frame. Reference numerals 8 and 9 denote elevating tables, elevating columns 4 and 6 are also used as guide rails, 10 and 11 are guide rollers, and 12 and 12 are suspension materials for elevating the elevating tables 8 and 9. The elevators 8 and 9 move up and down along the columns 4 and 6 by winding up or down the suspension material 12.
[0012]
14 and 15 are conveyors, and the elevators 8 and 9 have a two-arm structure in a position overlapping the conveyors 14 and 15, and the arms of the elevators 8 and 9 pass through the gaps provided in the conveyors 14 and 15. To get. Therefore, when the elevators 8 and 9 are lowered, the pallets can be transferred from the elevators 8 and 9 to the conveyors 14 and 15, and when the elevators 8 and 9 are raised, the pallets can be received from the conveyors 14 and 15. The delivery of pallets to and from the elevators 8 and 9 is not limited to the conveyors 14 and 15, but may be a forklift or the like, for example.
[0013]
Reference numeral 16 denotes a carriage, which can move horizontally along the ceiling frame 7 to the left and right in FIG. 1. It is provided. A hand 19 having a hook is provided inside the hand body 18, and a pusher 20 is attached to the hand body 18 at a lower portion of the hand 19 so as to be rotatable by 90 °, for example. When the pusher 20 is pushed by the piston rod from the cylinder 22 provided in the hand main body 18, as shown on the right side of FIG. 1, the pusher 20 is rotated 90 ° to push the article in the horizontal direction, and when the piston rod is pulled up, As shown on the left side of FIG.
[0014]
Reference numerals 24 and 25 denote pallets, which are moved up and down by the lifting platforms 14 and 15 and conveyed by the conveyors 14 and 15. On the pallets 24 and 25, articles such as a plastic case 26 are vertically fitted and stacked. The plastic case 26 is for transporting and storing bottles such as beer bottles, but the plastic case 26 is not limited to the plastic case 26 as long as articles are fitted and stacked. The plastic case 26 is, for example, a P box, and has a concave portion 28 on the side surface of the four circumferences, and a protruding portion 28 shown in FIG.
[0015]
As shown in FIGS. 2 and 3, the hand 19 faces the center of the bottom of the carriage 16, and each hand 19 includes a plurality of hooks 30, and each hook 30 is pressed against the concave portion 27 side by a spring 31. ing. As a result, the hook 30 fitted to the recess 27 is pushed by the spring 31 and hooks and holds the recess 27, and the hook located at a place other than the recess 27 abuts on the surface of the plastic case 26 and stops. The plastic case 28 for one layer is composed of a plurality of layers. However, in places other than the place where the plastic case 28 is hooked by the hook 30, the collapse of the load is prevented by friction between the cases.
[0016]
A piston rod 32 is provided at the tip of the cylinder 22, and the carriage 16 is provided with a cylinder 34 for moving the hand main body 18 back and forth toward the plastic case 26. The pin 36 becomes a rotation center of the pusher 20 with respect to the hand main body 18, and the engagement element 38 attached to the piston rod 32 moves in a guide groove 40 provided inside the pusher 20. For this reason, when the piston rod 32 is extended, as shown in FIGS. 2 and 3, the pusher 20 comes into contact with the plastic case 26 and pushes it in the horizontal direction. Thus, the plastic case 26 is not pushed.
[0017]
In the embodiment, the plastic case 26 is shifted in the horizontal direction by using the pusher 20. However, for example, the plastic case 26 may be shifted in the horizontal direction by swinging the entire bottom portion of the carriage 16 in the horizontal direction. . As the rotation mechanism of the pusher 20, for example, an arbitrary one such as one that is pushed by the piston rod 32 and returned by a spring can be used.
[0018]
FIG. 4 shows the operation of the embodiment. Initially, the hand is in a position retracted from the center of the bottom of the carriage, and the pusher is in an open state (a state bent 90 degrees outside the case) to avoid contact with the plastic case 26, for example. From this state, the lift is raised, the hand provided on the bottom four circumferences of the carriage is advanced to the plastic case side, and the hook is hooked on the concave portion on the side of the case to hold the case for one layer. At this time, each hand has a large number of hooks, some of which do not fit into the recesses, but such ones stop in contact with the side of the case and other hooks enter the recesses. It does not get in the way.
[0019]
When the plastic case is hooked with the hook, the elevator platform descends. The pusher is closed and the plastic case is pushed in the horizontal direction from the fourth round to improve the adhesion between the cases. At the same time, the carriage is run, and the elevator on the side where the cases are stacked rises. The lifting platform is raised to a position where the protruding portion at the bottom of the upper article held by the carriage and the top of the lower article are almost fitted, and the pusher is held while the article is hooked and held by the hook. Open and close several times. The article is still hooked and held and is easily displaced in the horizontal direction. When pushed by the pusher, the position is shaken in the horizontal direction, and the protruding portion of the upper article is fitted into the upper opening of the lower article.
[0020]
Next, when the hand is moved backward from the case, the hook is released, the elevator is lowered, and the carriage is moved to the pallet (pallet 24 in FIG. 1) for depalletizing, the operation for one layer is performed. finish.
[0021]
In the embodiment, the case is hooked and held by the hook, and pushed by the pusher, so that it can be shaken with a light force, shifted in the horizontal direction, and easily fitted into the lower article. it can. In addition, since the pushers are provided on the four sides of the bottom of the carriage, they can be easily fitted regardless of the direction in which the pusher is displaced.
[Brief description of the drawings]
FIG. 1 is a side view of an article stacking apparatus according to an embodiment. FIG. 2 shows a hook that hooks a concave portion of a plastic case, a pusher that is in contact with the side of the plastic case, and the like. FIG. 3 is a partially enlarged view of the pusher opening and closing mechanism. FIG. 4 is a flowchart showing the palletizing operation in the embodiment.
2 Palletizers 4 to 6 Posts 7 Ceiling frames 8 and 9 Lifting bases 10 and 11 Guide rollers 12 Suspension materials 14 and 15 Conveyors 16 Carts 18 Hand bodies 19 Hands 20 Pushers 22 Cylinders 24 and 25 Pallets 26 Plastic cases 27 Recesses 28 Protruding parts 30 Hook 31 Spring 32 Piston rod 34 Cylinder 36 Pin 38 Engagement element 40 Guide groove

Claims (3)

An apparatus for vertically stacking articles having fitting portions, the means for stacking the articles up and down, a hook for hooking and holding irregularities on the side of the upper article, and the side of the upper article The pusher for shifting the upper article in the horizontal direction and fitting it to the lower article is provided by pushing in the horizontal direction, and the pusher is held while the upper article is hooked and held by the hook. An article stacking device, wherein the article stacking device is configured to be fitted to a lower article by pressing the side face of the article when the pusher is closed by opening and closing a plurality of times . Each of the upper article and the lower article comprises a plurality of articles,
2. The article stacking apparatus according to claim 1, wherein the hook and the pusher are arranged on four circumferences of a layer formed by the upper article . A carriage that moves in the horizontal direction is provided, the hook and pusher are arranged on the bottom surface thereof, the upper article is held and conveyed by the hook, and an elevator is provided to raise the lower article. The apparatus for stacking articles according to claim 1 or 2 , wherein the upper article is superposed on the lower article, and the upper article is fitted to the lower article.

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