JPH02253B2 - - Google Patents

Description

DETAILED DESCRIPTION OF THE INVENTION The present invention relates to a box stacking device for transporting a large number of boxes such as cardboard boxes, and more specifically, the present invention relates to a box stacking device for transporting a large number of boxes such as cardboard boxes. This relates to a palletizer that stacks multiple layers.

A palletizer used as the final step of packaging work is usually equipped with a pool conveyor in its conveyance line for waiting boxes before loading the boxes of boxed products onto the pallet. However, this requires a vast floor space, and it is extremely difficult to introduce a palletizer to the work floor. Furthermore, even if the pool conveyor is short, it requires space equivalent to 1.5 to 2 layers of the box (6 to 8 m), and in an integrated line directly connected to the caser in the previous process, an inclined conveyor or pertilator is required. .

The above-mentioned line also has the drawback of requiring a vast area as floor space. In addition, the pusher type is conventionally a common method for transporting and loading boxes, which requires a stroke, and the palletizer itself cannot be miniaturized.

The present invention was made in view of the above-mentioned problems.
The aim is to shorten or eliminate the distance of the pool conveyor as much as possible, and to provide a small and highly efficient palletizer that is capable of stacking multiple layers of boxes of various types and small quantities. a gathering means 3 for closely gathering the boxes 2 brought in by the operator on the gathering floor 12; a pushing means 4 for pushing the assembled boxes horizontally forward from the rear of the palletizer main body 1; A pair of left and right first endless chains 15 are stretched between front and rear chain wheels 16 on the left and right sides for placement, and a plurality of first rollers in the left and right direction are continuously installed on a part of the circumference thereof. 18 and a drive source 17 for driving the upper chain on the upper side of the first endless chain 15 forward; The pair of first endless chains 15 can be raised and lowered by a lifting mechanism 7 installed in the
a pair of left and right second endless chains 20 that are arranged in parallel within an interval of A drive source 22 and a first
A transport means 6 consisting of a collection box holding stopper 24 that prevents the collection boxes on the first roller 18 supported by the upper chain of the endless chain 15 from moving back and forth, and a drive guide 25 for driving the collection boxes in the front and back direction. The second roller 23 is connected to the second endless chain 2.
When the collecting box body is held on the first roller 18 at the upper side of the first endless chain 15 by the stopper 24 when it advances in the same plane following the first roller 18 on the upper side of the first endless chain 15 at the lower side of the first endless chain 15 2a is placed on the second roller 23 and raised as necessary, and the second roller 23 and the stopper 2
The palletizer is characterized in that the palletizer is moved forward together with 4 to above the pallet 29, stops only the stopper 24 above the pallet 29, and discharges the second roller 23 from the lower side of the collection box 2a, thereby stacking in multiple layers. It is.

Embodiments of the present invention will be described below with reference to the drawings. FIG. 1 is a longitudinal sectional side view of the palletizer of the present invention, and FIG. 2 is a view along the line--arrow of FIG.

The palletizer of the present invention has a palletizer main body 1
a collection means 3 for closely gathering boxes 2 such as cardboard boxes to be transported to the main body 1; a means 4 for pushing the boxes 2 into the main body 1; a standby means 5 for waiting prior to transfer for multilayer stacking; It is composed of a collecting box transport means 6, a lifting mechanism 7 for the transport means, and a mounting means 8 for the boxes.

The collecting means 3 is located on the outside of the palletizer main body 1 and is provided as a pre-process for loading, and is a means for arranging and closely gathering the boxes 2 that have been transported in a line, for example. Reversing machine 1
1. It consists of a collection floor 12 on which the boxes are placed, a pusher (not shown) that brings the boxes into close contact, and a drive source thereof.

The pushing means 4 includes a pusher 14 for pushing several collection boxes 2a on the collection floor 12 into the main body 1 through an insertion opening 13 provided on the side of the main body 1, and its driving source (not shown). Consisting of In addition, as a driving source for the above-mentioned two types of pushers provided on the collecting floor 12, for example, an air cylinder or the like is used.

The standby means 5 includes a pair of first endless chains 15, 15 stretched almost horizontally, adjacent to the insertion port 13 of the main body 1, the upper surface of which is at the same height as the collection floor 12, and a chain wheel 16 for driving the first endless chains 15, 15. , a drive source 17, and a plurality of first rollers 18 bridged over a portion of the circumference of the chain 15 in the main body 1. The roller 18 is pivotally supported at both ends by chains 15, 15 so as to rotate freely, and is driven by a drive source 17.
It can be moved in both forward and reverse directions together with the chain 15 by forward and reverse rotational driving. As shown in FIG. 1, it consists of a part where rollers 18 are continuously attached and a part without rollers. The chain wheel 16 is driven to the position indicated by the chain line in the figure.

The transfer means 6 is located substantially horizontally above the above-mentioned standby means 5 and the below-mentioned loading means 8, and includes a chain wheel 21 in which a second endless chain 20 is stretched between a pair of left and right plates 19, 19; A drive source 22, a plurality of second rollers 23 bridged on a part of the circumference of the pair of chains 20, 20, a stopper 24 that holds the collecting box 2a from above, a stopper movement guide 25, and a stopper drive source (not shown). It is made up of.

As shown in the figure, the chain 20 is comprised of a portion to which rollers 23 are continuously attached and a portion without rollers, and moves together with the rollers 23 in the direction of arrow 26 as the chain wheel 21 rotates. Furthermore, roller 2
3 has chains 20 at both ends, similar to the roller 18 described above.
It is rotatably supported on the shaft. and roller 23
When the roller 18 of the standby means 5 is located directly above the standby means 5 and on the lower chain on the lower side of the chain 20, the height is the same as when the roller 18 of the standby means 5 is located on the upper surface of the standby means 5. There is. This is to enable the collecting box 2a to be transferred from the roller 18 to the roller 23 as described later.

Note that the roller 18 of the standby means 5 and the roller 23 of the transport means 6 do not occupy the same position as described later, but in order to prevent one roller from interfering with the other chain, Lines in the diagram
As shown in the arrow view, consideration has been given to the positions of chains 15, 20 and chain foils 16, 21.
That is, the chain wheel 16 of the standby means 5 is pivotally supported by the outer wall 27 of the palletizer main body 1,
The chain foil 21 of the transfer means 6 is attached to the plate 19
It is pivoted on. For example, the distance l ₁ between the left and right chain foils 21, 21 is
6, 16 is smaller than l ₂ and the chain foils 21, 21 are arranged between the chain foils 16, 16, the roller 18 on the standby means 5 side touches the teeth of the chain foil 21 on the transfer means 6 side. Chain 1 of roller 18 so as not to interfere with the tip.
For example, a U-shaped bracket 28 is attached to the mounting part with 5.
is interposed. Note that since there is no crosslinked material in the chain in the area where the roller is not present, there is no possibility of interference.

The elevating mechanism 7 is for elevating the entire transfer means 6, and is for stacking the collection boxes 2a on the pallet 29 in multiple layers. This consists of a chain 33 stretched between a hook 30 provided at a suitable position above the plate 19 and a wheel 32 fixed to a shaft 31 extending from the ceiling of the palletizer main body 1, and this chain being wound. It consists of a drive motor 34 for frying.

The loading means 8 consists of a loading platform 35 installed on the floor within the palletizer main body 1 and a pallet 29 on which the collection boxes 2a are stacked in multiple layers.

Needless to say, the configuration of each means described above is not limited to that of this embodiment, and may be any configuration that achieves the function.

In the above configuration, the palletizer of the present invention operates as follows.

The individual boxes 2 conveyed to the collection means 3 outside the palletizer main body 1 are arbitrarily reversed by a reversing machine 11 to form the planned collection form, and the boxes are aligned and closely aligned at one end of the collection floor 12 by a pusher (not shown). 2a.

Next, the collection box 2a is pushed into the standby means 5 in the main body 1 through the insertion port 13 by the pusher 14. At this time, the rollers 18 of the standby means 5 are located on the upper surface of the standby means 5, and the box 2a is pushed in so as to slide on the freely rotating rollers 18. On the other hand, the rollers 23 of the transport means 6 are located on the top of the transport means 6 or within the loading means 8 for loading the preceding boxes onto a pallet.

Next, the transfer means 6 is slightly raised by the lifting mechanism 7, and the stopper 2 is moved by an air cylinder.
4 is placed on the collection box 2a on the roller 18 of the standby means 5, the transfer means 6 is slightly lowered and the aforementioned stopper 24 surrounds the upper part of the collection box 2a. In this state, the chain 20 of the transfer means 6 is driven in the direction of the arrow 26, and the front end roller 2 of the roller 23 is
When the roller 3a reaches the rear end roller 18a of the roller 18, the chain 15 of the standby means 5 is also driven in the same direction. At this time, since the movement of the collecting box 2a is restricted by the stopper 24, both moving rollers 18, 2
3 is only in rotational contact with roller 2, and when roller 18 retreats to the side or underside of standby means 5, roller 2
The invasion of No. 3 into the lower part of the collecting box 2a is also completed. In other words, the collection box 2a has been delivered to the transfer means 6. The drive of the chain 20 is then stopped.

Next, when the transfer means 6 is raised to a predetermined loading height of the pallet 29 by the lifting mechanism 7, the chain 20 is driven again and the stopper 24
is also moved toward the pallet 29 by an air cylinder. At this time, the chain 15 of the above-mentioned standby means 5 is driven in reverse, and the roller 18 is returned to its original position on the upper surface of the standby means 5. Although the stopper 24 is stopped in the transfer means 6 which loads the collection boxes 2a transferred onto the pallet 29, the chain 20 continues to be driven. As a result, the movement of the collection box 2a in the moving direction is blocked, but the rollers under the collection box 2a move sequentially, and when all the rollers have passed, the collection box 2a is automatically placed on top of the preceding loading box 2b. be done. This situation is shown in FIG. Such a procedure is repeated one after another until the collecting box 2a becomes the pallet 2.
The pallets 29 are automatically stacked in multiple layers on the palletizer 9, and after a predetermined amount of pallets have been loaded, the pallets 29 are carried out from the palletizer main body 1.

As explained above, in the present invention, the interval between the pair of left and right first endless chains 15, 15 of the standby means 5 is widened, and the pair of left and right second endless chains of the transfer means 6 are widened in plan view. By setting the dimensions such that the chains 20, 20 can fit in, the transfer means 6 is provided overlappingly above the standby means 5, and when the roller 18 moves forward in the direction of the arrow 26 in FIG. Following the rollers 18, the rollers 23 can move forward on the lower side of the transfer means 6 in the same plane, and the collection box bodies 2a waiting on the rollers 18 on the upper side of the waiting means 5 are simply held by the stoppers 24. By simply doing so, the collecting box body 2a can be transferred onto the roller 23 which circulates to the lower side of the transfer means 6 by driving both endless chains 15 and 20. Therefore, the collection boxes 2a for one layer suitable for stacking on the pallet 29 of the loading means 8 are gathered into a rectangular plane or the like suitable for stacking, and the upper roller 1 of the waiting means 5 is placed.
8 by the pushing means 4,
When the transfer means 6 is lowered and the upper side of the standby means 5 and the lower side of the transfer means 6 are aligned in the same plane, the endless chains 15 and 20 of the standby means 5 and the transfer means 6 are driven to move the collecting box. The roller 18 on the lower side of the body 2a is replaced by the roller 23, and the collecting box body 2a
automatically moves onto the roller 23 on the lower side of the transport means 6. Next, the transfer means 6 is appropriately raised within the palletizer main body 1 by the lifting mechanism 7, and then the endless chain 2
0 lower side and stopper 24 in front (left side of Figure 1)
By then, pallet 29
The next collecting box 2a is supplied slightly above the collecting box stacked above, and the collecting box 2a is stopped there by the stopper 24, and the lower side of the endless chain 20 is continuously driven forward to complete the collecting box. The roller 23 advances and retreats from the lower side of the collecting box 2a.
is automatically placed on the collecting box on the pallet 29. In this way, the endless chain 1 of the standby means 5
By selecting the left-right spacing of 5 and the left-right spacing of the endless chain 20 of the transfer means 6, the rollers 18 and 23 are driven forward in the same plane without interference, and the lower side of the collection box 2a held by the stopper 24 is The roller can be smoothly switched from roller 18 to roller 23. Further, the transfer means 6 can be freely raised and lowered by a lifting mechanism 7 in the palletizer main body 1, and the pallet 2 is placed in front of the standby means 5.
9. Since the loading means 8 consisting of the loading platform 35 etc. is arranged, the loading means 8 can be incorporated into the palletizer main body 1 and the collecting boxes 2a can be efficiently loaded on the pallet 29 within a narrow space. There are advantages. Also, since the stopper 24 is provided, the transfer means 6
After receiving the collecting box 2a on the roller 23 at the lower side, the contact state between the collecting box 2a and the roller 23 does not change until it moves forward and reaches the upper part of the pallet 29. Collection box 2
There is no fear that the boxes 2 will move or disperse, and can be fed onto the pallet 29 in the same form as when they were waiting on the upper roller 18 of the waiting means 5, and the boxes 2 can be placed on the pallet 29 without any gaps. It can be packed compactly and stacked accurately. Furthermore, in the present invention, the two chain foils 21 at the front and rear of the transfer means 6, the endless chain 20 stretched between them, etc., together with the left and right plates 19, form a chain 33.
The rollers 18 of the standby means 5 and the pallets 29 of the loading means 8 are placed in the interval between the left and right endless chains 20, 20 in the palletizer main body 1.
By arranging the collecting boxes 2a in front and behind each other, the loading work of the collecting box bodies 2a can be carried out efficiently within the palletizer main body 1. Furthermore, in the present invention, since the standby means 5 and the transfer means 6 are provided, each of which includes an endless chain 15 inside the palletizer body and a series of rollers 18 attached to a part of the endless chain 15, there is no need to keep the box body on standby outside the palletizer. This not only eliminates the need for a pool conveyor, but also enables miniaturization and efficient loading operations.

[Brief explanation of drawings]

FIG. 1 is a longitudinal sectional side view of the palletizer of the present invention;
FIG. 2 is a view along the lines shown in the previous figure, and FIG. 3 is a view taken along the lines shown in FIG. 2, showing the arrangement of each chain foil. FIG. 4 is a front view showing how the collection boxes are stacked in multiple layers on a pallet. DESCRIPTION OF SYMBOLS 1... Palletizer main body, 2... Box body, 2a... Collection box body, 4... Pushing means, 5... Standby means, 6... Transfer means, 7... Lifting mechanism, 8... Mounting means, 15, 20... Endless chain,
16, 21... Chain wheel, 17, 22... Drive source, 18, 23... Roller, 24... Stopper, 2
9...Palette.

Claims (1)

[Claims] 1. A collecting means 3 for closely gathering the boxes 2 carried in in a row on the collecting floor 12, a pushing means 4 for pushing the collected boxes horizontally forward from the rear of the palletizer main body 1, and a pushing means 4 for pushing the collected boxes 2 horizontally forward from the rear of the palletizer main body 1, and A pair of left and right first endless chains 1 are stretched between front and rear chain foils 16 on the left and right sides to place the box body 2a.
5, a plurality of first rollers 18 in the left and right direction continuously installed on a part of the circumference thereof, and a drive source 17 for driving the upper chain on the upper side of the first endless chain 15 forward; It is located above the standby means 5 and the pallet 29 placed in front of it, and can be raised and lowered freely by a lifting mechanism 7 installed in the palletizer main body 1. A pair of left and right second endless chains 20 are arranged in parallel within the interval between the pair of first endless chains 15 and driven in opposite directions, and a plurality of left and right endless chains 20 are continuously constructed on a part of the circumference thereof. 2 rollers 23 and the drive source 22 that drives the lower chain on the lower side of the second endless chain 20 forward, and the collecting box body on the first roller 18 supported by the upper chain of the first endless chain 15 is prevented from moving back and forth. A transport means 6 consisting of a stopper 24 for holding the collecting box body and a driving guide 25 for driving this in the front and rear direction.
When the second roller 23 advances in the same plane following the first roller 18 on the upper side of the first endless chain 15 at the lower side of the second endless chain 20, the first roller 18 on the upper side of the first endless chain 15 moves forward. The collection box body 2a held by a stopper 24 on the roller 18 is received on the second roller 23, raised as necessary, and advanced together with the second roller 23 and the stopper 24 to above the pallet 29,
A palletizer characterized in that multilayer stacking is performed by stopping only the stopper 24 above the pallet 29 and discharging the second roller 23 from the bottom of the collecting box 2a.