JPH0517125B2 - - Google Patents

Description

[Detailed Description of the Invention] <Industrial Application Field> The present invention provides a method for storing case bodies such as cardboard cases containing paper products, etc. in multiple stages, one stage at a time, on pallets that are supported in a predetermined arrangement so as to be able to rise and fall freely. This invention relates to a palletizer that can be loaded sequentially in the form of a palletizer.

<Prior art> A large number of case bodies, such as cardboard cases containing paper products, etc., are stacked in multiple stages on a pallet in a predetermined arrangement to form a small-volume laminate for convenient storage and transportation. Therefore, palletizers are used.

Usually, a palletizer consists of a supply conveyor that transports the case body in a predetermined direction, an elevating table that places the pallets on the table, and a supply conveyor that supplies the pallets onto the pallets that are supported so that they can move up and down. It is equipped with a reloading means that can sequentially stack case bodies one stage at a time in a predetermined arrangement.

A conventional palletizer, for example, is used as a reloading means for stacking the case bodies supplied by the supply conveyor one stage at a time in a predetermined arrangement on the pallet supported so as to be movable up and down. As shown in FIG. 2, before the process of sequentially loading case bodies 1 in a predetermined arrangement one by one onto a pallet 52 placed on a lifting table 50, the case bodies 1 are placed on a mounting table 54 located approximately horizontally with the pallet position. The case bodies 1 supplied by the conveyor are placed one stage at a time in a predetermined arrangement, and in this state, the mounting table 54 is moved horizontally onto the pallet 52 as shown by the imaginary line, and then moved backward. At this time, by stopping the rear end portion of the case body 1 for one stage placed on the mounting table 54 with the restraining member 56, the case body 1 is
are dropped onto a pallet 52 in a predetermined arrangement, the case bodies 1 in a predetermined arrangement are placed on the pallet 52, and the case bodies 1 in a predetermined arrangement are placed one stage on the pallet 52 which is successively lowered by a similar operation. It is configured to stack up a predetermined number of stages one after another.

Furthermore, as in the palletizer device disclosed in Japanese Patent Application Laid-Open No. 136821/1982, a case bundle that has been arranged in an arrangement pattern for one layer in an alignment section is fed to the running roller section of the palletizer device in one layer. It has been published.

However, these conventional palletizers have one stage of case bodies arranged in a predetermined arrangement between the pallet 52 position in the raised position and the supply conveyor.
A mounting table 54 is provided that allows the cells to be pooled once, and an alignment unit is provided for arranging them in a predetermined arrangement pattern.
This method requires a large installation space for arranging the filter and alignment section, and has the disadvantage that it is difficult to construct the entire device compactly.

<Problems to be Solved by the Invention> The present invention aims to eliminate these drawbacks of conventional palletizers, and includes a mounting table and an alignment section that can temporarily pool one stage of case bodies in a predetermined arrangement. By placing the pallet on the same plane as the pallet, which is supported so that it can be raised and lowered on a lifting table,
This eliminates the need for separate installation space for a mounting table or an alignment section, thereby making the entire device compact.

<Means for Solving the Problems> The palletizer of the present invention provided in order to achieve the above-mentioned objects includes: an elevating table provided with a mounting surface on which pallets can be placed; and pallets placed on the elevating table. The endless belt is disposed on the lifting surface of the pallet, and has a horizontal track section parallel to and almost opposite to the pallet surface, and after passing through this horizontal track section, it reverses and returns to the original horizontal track section. A circulation table consisting of a roller conveyor that is constructed and runs in circulation and has a mounting surface on which one stage of case bodies in a predetermined arrangement can be placed; The case bodies sorted into flow direction orientations and fed one row at a time in the conveyor transport direction are fed and placed one row at a time in a direction perpendicular to the conveyor transport direction, making up one row of one stage of case bodies. a supply means for stopping the movement of a group of case bodies that are supplied one row at a time and placed as a group of case bodies for one stage on a circulation table located on a horizontal track portion by the supply means; and a stop member disposed so that the case body group can fall onto the lifting surface of the pallet when it leaves the rear end of the circulation table on which the case body group is circulated, and the supply means is arranged such that the case body group can fall onto the lifting surface of the pallet when it leaves the rear end of the circulation table where the case body group is circulated. A stop plate that can freely move forward and backward and that can stop a row of case bodies sorted into directional postures and fed one row at a time in a conveyor transport direction by a conveyor at a predetermined supply position on the conveyor; The conveyor section on which a row of case bodies stopped at a predetermined supply position is placed is an independently driven conveyor group so that each placed case body can be independently moved in the conveyor transport direction, and this independent It is composed of a pushing plate that sequentially transfers and supplies one row of case bodies placed on a driving conveyor group onto a circulation table located on a horizontal track section one row at a time in a direction perpendicular to the conveyor transport direction,
Further, the stopping member is configured to independently control the position at which the case assembly placed on the horizontal track portion of the circulation table is separated from the circulation table as the circulation table moves. It is characterized in that it is constructed by a plurality of restraining members that are movable forward and backward and are arranged corresponding to each case row that is restrained in the direction.

<Example> Hereinafter, an example of the present invention will be described based on the drawings.

Fig. 1 is a schematic plan view of the entire device, Fig. 2 is a schematic front view, Fig. 3 is a schematic side view showing the main parts of the present invention, and Fig. 4 A, B, and C are operating states of Fig. 3. 5A and 5B are perspective views of case bodies stacked in a predetermined arrangement on a pallet.

In Figures 1 and 2, 1 is palette 2.
This is a long cubic case body such as a cardboard case that is stacked in multiple stages in a predetermined arrangement on top. Paper products and the like are stored within the case body 1. 3 is a feeding step in which the case bodies 1 are fed to a circulation table, which will be described later. During this feeding process, the elongated cubic case bodies are sorted into predetermined arrays in the vertical and horizontal directions. Reference numeral 4 denotes an inclined conveyor whose transfer direction is inclined downward and is configured to supply the case body 1 from a workshop provided on the second floor to the first floor, and reference numeral 5 indicates a conveyor belt which runs horizontally in the same direction as the inclined conveyor 4. 1 conveyor, 6 a second conveyor arranged to run perpendicular to the running direction of the first conveyor 5 in an L shape, 7 a second conveyor 6 running in an L shape with respect to the running direction. The third conveyor is arranged to run perpendicular to the second conveyor.

Reference numeral 8 denotes a first stop plate that is provided at the terminal position of the first conveyor 5 and can stop the transfer of the case body 1 that has been transferred by the inclined conveyor 4 and the first conveyor 5 in a vertically long flow direction attitude. , 9 senses the case body 1 whose movement is restrained by the first restraining plate 8 using a sensor (not shown), and uses this electric command to move the case body 1 in the restrained position in the orthogonal direction in the restrained position. The first pushing plate is configured to be able to move horizontally up to the second conveyor 6 disposed and is movable forward and backward. The case body 1 pushed by the first pushing plate 9 is transferred to the second conveyor 6.
The paper is transported to the end position of the second conveyor 6 in a horizontally elongated position in the flow direction. Reference numeral 10 denotes a second stop plate that is provided at the terminal position of the second conveyor 6 and can stop the transfer of the case body 1 that has been transferred by the second conveyor 6 in a horizontally elongated flow direction posture; The case body 1 whose transfer is restrained by the second restraining plate 10 is sensed by a sensor (not shown) in the same manner as the first pushing plate described above, and the case body in the restrained position is moved to the restrained posture by this electric command. This is a second pushing plate that can be pushed laterally to a third conveyor 7 disposed in the orthogonal direction. This second pushing plate 11
The case body 1 that has been pushed is changed into a vertically elongated flow direction attitude on the third conveyor 7 and is transferred to a position where it is stopped via a stop plate 12 provided at the terminal position of the third conveyor 7. The operation of this stop plate 12 will be described later.

Next, a description will be given of means for enabling the case body to reach the terminal position of the third conveyor 7 in a horizontally long flow direction posture. Reference numeral 18 is provided in the middle of the second conveyor 6, and can sense the case body 1 being transferred on the second conveyor 6 in a horizontally elongated flow direction posture with a sensor (not shown), and can stop the case body 1 in the position based on this electric command. 14 is a stopper body configured to move forward and backward, and 14 suction-supports the side wall surface of the case body 1 whose movement is restrained by the stopper body 18, and the suction-supported case body 1 is moved to the second side. A third conveyor 7 disposed orthogonally to the second conveyor 6 without intervening the stop plate 10 and the second pushing plate 11
The case body is configured so that it can be horizontally moved, that is, rotated by 90 degrees, as shown by the imaginary line in FIG. This is a pivot arm in which a suction part 15 is provided on the pivot part. Reference numeral 16 denotes a pressing member that can move forward and backward to press the case body 1 toward the suction portion 15 side. In this way, the case body 1 is configured to reach the terminal position of the third conveyor 7 in the horizontally elongated flow direction orientation similar to the feeding orientation on the second conveyor without changing the orientation in the longitudinal and lateral flow directions. When the case body 1 is transferred on the second conveyor 6, the purpose can be achieved by operating the stop plate 18 and the pivot arm 14 having the suction part 15, so that the case body 1 is transferred sequentially in the same posture direction. The case bodies 1 are sorted into vertical and horizontal orientations in accordance with predetermined arrangement orientations.

The case bodies 1 sorted into predetermined vertical and horizontal flow direction orientations and transported on the third conveyor 7 are stopped via the above-mentioned stop plate 12, and the case body 1 is perpendicular to the conveyor transport direction with respect to this stopping position. The case bodies 1 are pushed one row at a time via the pushing plate 13 onto a circulation table located on horizontal track sections arranged in parallel in the direction.Here, the means for spacing the case bodies 1 in one direction will be explained. . The stop plate 1
2 is configured to be able to freely move forward and backward so that its stopping position, that is, its advancing position can be varied. In addition, each case body 1 for one row is restrained via a restraining plate 12.
The third conveyor 7 section on which the case bodies 1 are placed includes a first independent drive conveyor 7a, a second independent drive conveyor 7b, and a third independent drive conveyor 7a, a second independent drive conveyor 7b, and a third independent drive conveyor 7b, which are connected to each other via free rollers 7d so that each case body 1 can be transferred independently. It is composed of a driving conveyor 7c. Here, to specifically explain the gap opening operation based on the illustrated example, for example, in FIG. When opening the gap A formed between the case bodies 1 in the posture, advance the stopping plate 12 to the position 12a shown by the imaginary line, stop each case body 1 at the stopping position, and then The stop plate 12 is moved back to the original solid line position, and only the first independently driven conveyor 7a on which the leading case body 1 is placed runs independently to move the leading case body to the position of the retreated stop plate 12. 1 should be moved forward. During this time, the purpose of opening A is to move the case body 1, which is pushed one row at a time by the pushing plate 13, into the case body 1 in a vertical orientation.
This is to avoid the problem of collision caused by the protruding parts of the parts. Incidentally, the virtual line 12b of the stop plate 12
The advancing position shown by is operated when forming the width B between the loading examples of the case bodies 1 shown in FIG. 5B. In addition, 17 is shown in Figure 1 and Figure 5 A.
This is a restraining member that can freely move forward and backward, and can stop the leading box at a predetermined position before it is stopped by the restraining plate 12 when configuring an array symmetrical with the boxes of row 1B.

Thus, the case body 1, which is in a predetermined vertical and horizontal flow direction posture and has a predetermined width, is placed one row at a time (1A, 1B, 1C) on the circulation table positioned on the horizontal track section by the pushing plate 13. Transferred sequentially.

Next, a description will be given of the essential part of the present invention, that is, the reloading means for sequentially reloading a group of case bodies supplied one stage at a time in a predetermined arrangement onto a pallet that can be raised and lowered.

20 is a circulation table consisting of a roller conveyor, and this circulation table 20 is connected to the pushing plate 13.
The horizontal track portion 22 runs in the same direction as the pushing direction of
After passing through, it is constructed so that it can be reversed and returned to the original horizontal track section 22 by being installed on endless belt chains 25, 25 installed on the guide wheels 24, so that it can travel in circulation. Then, the circulation table 2
0 is configured so that when it is located on the horizontal track section 22, it can receive the case bodies 1 that are fed one row at a time by the pushing plate 13. Further, two circulation tables 20 are provided at symmetrical positions with respect to the circulation orbit. Therefore, by providing two circulation tables 20 and positioning them alternately on the horizontal track section 22, it is possible to speed up the transshipment work of the case bodies 1. Reference numeral 30 denotes an elevating table that is disposed below the circulation table 20 located on the horizontal track section 22 and has a mounting surface on which the pallet 2 can be placed. It is configured so that it can be lowered sequentially in accordance with the stacking height of one group of case bodies stacked one stage at a time on the pallet 2. still,
An elevating conveyor 34 having a running direction perpendicular to the circulating direction of the circulation table 20 is installed on the pallet mounting surface of the elevating table 30. This elevating conveyor 34 has a motor 35 with a brake.
It is brake-driven via. The pallet 2 placed on the elevating conveyor 34 is carried in and taken out effectively, which will be described later. 26 stops the movement of the case body 1 supplied and mounted on the circulation table 20 located on the horizontal track section 22, and when the case body 1 leaves the rear end of the circulation table 20 that is circulated. This is a stopping member arranged so that the pallet 2 can fall onto the lifting surface of the pallet 2. This restraining member 26 is designed to be able to change its restraining position, that is, its advancing position, in substantially the same way as the restraining plate 12, so that it functions when opening the space between one stage of case bodies 1 in the vertical direction, that is, in the circulation direction. It is configured to move freely forward and backward. moreover,
This restraining member 26 independently controls the position at which the case body group placed on the horizontal track portion 22 of the circulation table 20 is separated from the rear end of the circulation table 20 as the circulation table 20 travels. It is constituted by a plurality of restraining members 26, 26, 26 which are movable forward and backward and arranged corresponding to each row of cases to be restrained in the running direction of the circulation table 20 so as to be restrained in the traveling direction of the circulation table 20. For example, in the case of opening the width C in the vertical direction shown in FIGS. 1 and 5A, the operation will be explained based on FIGS. advance to the position of the imaginary line, and at this advance position rear case body 1
is circulated so as to be detached from the rear end of the circulation table 20, and at the same time as the rear case body 1 is detached, the stopping member 26 is retreated to the solid line position, and the front case body 1 is moved away from the rear end of the circulation table 20. If the front case body 1 is further circulated in order to disengage from the circulation table 20, the front case body 1 is in the retracted stopping position.
The case bodies 1 are separated from the case bodies 1 and dropped onto the lifting surface of the pallet 2, so that a width C is formed between the two case bodies 1 at the falling position. In the case of the loading example shown in FIG. 5B, since no vertical space is formed, it goes without saying that the stopping member 26 is not moved forward or backward. In addition, in FIG. 4C, the reference numeral 27 is
This is a pusher that can move forward and backward to slightly push the case body 1 dropped onto the pallet 2 from the rear and finely adjust the dropping position.

In FIG. 1, the reference numeral 28 is a guide plate, and the reference numeral 29 is a width adjustment plate. In particular, the width adjustment plate 29 is a guide plate.
In the figure, it functions to eliminate the gap width A between the case bodies 1 that have been brought in with a width A between them, and to join and align the case bodies 1 together.

Thus, one stage of case bodies 1 in a predetermined arrangement is placed on the pallet 2. And elevating table 3
Pallet 2 is lowered one step at a time via 0.
The case bodies 1 are stacked one stage at a time on the pallet 2, and the case bodies 1 are stacked in multiple stages in a predetermined arrangement on the pallet 2, as shown in FIG. 5A.

Next, the pallet supply means will be explained. 40
is a pallet supply conveyor disposed in the opposite supply direction to the supply direction of the lift conveyor 34 which can feed the pallets 2 installed on the pallet placement surface of the lift table 30 in one direction; A large number of pallets 2 are stacked on the conveyor 40 in multiple stages so that the pallets 2 can be sequentially supplied to the elevating conveyor 34. The pallet supply conveyor 40 is brake-driven via a motor 41 with a brake. 42 is the elevating conveyor 3
The pallet carrying conveyor 42 is disposed in the supply direction of the pallet carrying case 4, and the pallet 2 loaded with the case bodies 1 is supplied to this pallet carrying conveyor 42. The conveyance surfaces of the pallet supply conveyor 40 and the pallet discharge conveyor 42 are set at the same horizontal plane position as the conveyance surface of the elevating conveyor 34 at its lowest position. Reference numeral 46 denotes a fork device having forks 47, 47 that can freely move forward and backward, and can move up and down.
The fork 47 is advanced into the opening of the pallet 2 loaded on the second stage from the bottom, and at this advanced position, the pallet is raised to a position where it can be separated from the lowest pallet, and the lowermost pallet 2 is moved to the lowest position. The forks 47 are lowered in order to place the second group of pallets that have been lifted onto the supply conveyor 40 after being driven to be supplied onto the lifting conveyor 34 located at the top, and then the fork 47 is moved to a position where it does not interfere with the second group of pallets.
The fork 47 is configured to be able to move backward and raise the fork 47 to a horizontal position where it can advance into the opening of the pallet 2 loaded on the second stage from the bottom. Thus, the pallet 2 loaded with a predetermined number of case bodies 1 is driven by the elevating conveyor 34 and carried out onto the carry-out conveyor 42, and at the same time, the forks 47
The pallet 2, which has been placed and waiting on the supply conveyor 40 separated from the upper pallet supported in the raised position, is driven by the conveyor 40 and supplied to a predetermined position on the lifting conveyor 34 in the lowered position. .

<Effects of the Invention> According to the palletizer of the present invention, one stage of supplied case bodies in a predetermined arrangement is transferred via a circulation table onto a pallet supported by an elevating table so as to be movable up and down. , the circulation table is arranged on the same plane as the pallet, and the mounting table and the alignment section, on which one stage of case bodies in a predetermined arrangement can be pooled, are supported by an elevating table so as to be movable up and down. Since it is arranged on the same plane as the pallet, there is no need for additional installation space for the mounting table or the alignment section, and the installation space can be significantly reduced, and the entire apparatus can be configured compactly.

[Brief explanation of the drawing]

Fig. 1 is a schematic plan view of the entire palletizer device of the present invention, Fig. 2 is a schematic front view, Fig. 3 is a schematic side view showing the main parts of the present invention, Fig. 4 A, B,
C is a schematic side view showing an example of the operating state shown in FIG. 3; FIGS. 5 A and B are perspective views of case bodies loaded in a predetermined arrangement on a pallet; and FIG. FIG. DESCRIPTION OF SYMBOLS 1... Case body, 2... Pallet, 7... Conveyor, 7a, 7b, 7c... Independent drive conveyor group, 12... Stopping plate, 13... Pushing plate, 20...
Circulation table, 22...Horizontal orbit section, 26,2
6, 26...stopping member, 30...lifting table.

Claims (1)

[Scope of Claims] 1. A lifting table 30 provided with a mounting surface on which the pallet 2 can be placed, and a lifting table 30 disposed on the lifting surface of the pallet placed on the lifting table, parallel to the pallet surface and substantially parallel to the pallet surface. It has an opposing horizontal track part 22, is installed on an endless belt and runs in circulation so that after passing through this horizontal track part, it turns around and returns to the original horizontal track part, and carries a group of case bodies for one stage in a predetermined arrangement. A circulation table 20 consisting of a roller conveyor with a mounting surface on which it can be placed, and a conveyor 7 sorted into predetermined vertical and horizontal orientations on the circulation table located on a horizontal track.
the supply means capable of supplying and placing the case bodies supplied one row at a time in the conveyor transport direction in a direction perpendicular to the conveyor transport direction for each row constituting one row of one stage of case bodies; The means stops the movement of the case bodies that are fed one row at a time and placed on the circulation table located on the horizontal track part as one stage of case bodies, and the case bodies are circulated. A stopper member 26 is arranged so that the pallet can fall onto the lifting surface of the pallet when the rear end of the circulation table is detached from the conveyor. 7, a stop plate 12 is movable back and forth to stop one row of case bodies fed one row at a time in the conveyor transfer direction at a predetermined supply position on the conveyor; The conveyor section on which the stopped case body groups are placed is made into independently driven conveyor groups 7a, 7b, and 7c so that each of the placed case bodies can be independently moved in the conveyor transport direction, and these independent drive conveyor groups 7a, 7b, and 7c It is composed of a pushing plate 13 that sequentially transports and supplies one row of case bodies placed on the drive conveyor group onto a circulation table located on a horizontal track section one row at a time in a direction perpendicular to the conveyor transport direction, and further includes: The stopping member 26 is arranged in the traveling direction of the circulating table so that the position of the case assembly placed on the horizontal track portion of the circulating table can be independently controlled from the circulating table by the traveling of the circulating table. A plurality of restraining members 26, 26, 2, which are movable forward and backward, are arranged corresponding to each row of cases to be restrained.
A palletizer characterized by comprising: 6.