JP4052639B2 - palette - Google Patents

Description

[0001]
BACKGROUND OF THE INVENTION
The present invention relates to a pallet on which a load is placed.
[0002]
[Prior art]
Conventionally, a roll-shaped load is placed on an automatic guided vehicle, and the roll-shaped load is exchanged with a winding device. For example, a roll-shaped load in which a sheet-like material is not wound around the automatic guided vehicle at the loading station, that is, a core, is placed, and the automatic guided vehicle travels to the winding device. The automatic guided vehicle that arrives at the winding device supplies the wound core carried to the winding device, and collects the roll-shaped load in which the sheet-like material is wound around the winding core by the winding device, that is, the roll. Travel towards the loading station. Conversely, the roll may be supplied to a winding device to collect the core.
[0003]
The automatic guided vehicle is provided with a roll lifter that can be moved up and down for transferring the roll and a roll lifter that can move up and down for moving the core, and a roll is placed on the upper surface of the roll lifter. A V-shaped groove is recessed for positioning, and a V-shaped groove for positioning the core is similarly formed on the upper surface of the core lifter. Conventionally, a core and a roll are directly placed on these lifters.
[0004]
[Problems to be solved by the invention]
The unloading of the winding core and rolls supplied to the winding device to the automatic guided vehicle is performed at the loading station, which is a place different from the winding device. At this time, since the roll-shaped load is directly carried to the automatic guided vehicle using an overhead crane or other dedicated transfer device, the automatic guided vehicle must wait for the load. For this reason, the automatic guided vehicle has been restrained at the loading station for a relatively long time, so that the transfer work cannot be performed and the transfer efficiency is poor. In order to solve this problem, it is conceivable that roll-shaped loads are placed in advance near the stop position of the automatic guided vehicle using an overhead crane or the like. During this time, the automated guided vehicle was unable to move.
[0005]
Accordingly, an object of the present invention is to shorten the restraint time of the automatic guided vehicle accompanying loading / unloading of the load at the loading station as much as possible and improve the transport efficiency of the automatic guided vehicle.
[0006]
[Means for Solving the Problems]
Therefore, in the present invention, in the pallet on which the roll-shaped load is placed , the roll having the sheet-like material wound around the winding core faces the upper surface of the pallet and the substantially central portion of the pallet. A V-shaped groove is formed, and a V-shaped groove facing the winding core is formed on a side surface parallel to the V-shaped groove on which the roll is fitted on the upper surface of the pallet, An insertion hole is formed in the V-shaped groove into which the winding core fits and is formed to penetrate in the vertical direction. The insertion hole is a hole through which the lifter that moves up and down from the transport vehicle carrying the pallet passes. It is characterized by that.
[0007]
This makes it possible to handle a roll-shaped load via a pallet rather than a single load. As a result, overhead cranes are used to carry roll-shaped loads to the pallet as before, but once a roll-shaped load is placed on the pallet, there is no need to use an overhead crane, etc. Can be placed in a car. As an example, shelves are prepared on both sides of the stop position of the automatic guided vehicle, and pallets are arranged so as to bridge between the shelves. When the automatic guided vehicle enters under the pallet and stops, the pallet can be lifted using the lifter, and the lifter can be lowered when the lifted vehicle comes out of the shelf, and the pallet can be placed on the automatic guided vehicle. That is, it is possible to place a roll-shaped load on the automatic guided vehicle via a pallet without carrying the roll-shaped load to the automatic guided vehicle with an overhead crane or the like as in the prior art. Thereby, the loading of the automatic guided vehicle at the loading station can be performed only by the movement of the automatic guided vehicle, and the loading operation is completed in a relatively short time.
[0008]
In addition, since a roll-shaped load is placed on the pallet, a plurality of pallets on which the roll-shaped load is placed can be prepared in advance. In other words, while the automatic guided vehicle goes to the take-up device, it is possible to finish the work of the overhead crane, which takes a relatively long time. This makes it possible to carry out a relatively smooth and time-saving loading operation using the method and the like, thereby improving the conveyance efficiency.
[0009]
Furthermore, since a plurality of the V-shaped grooves are formed in parallel, a plurality of roll-shaped loads can be simultaneously loaded, and the conveyance efficiency can be improved. That is, conventionally, when a plurality of roll-shaped loads are placed on the automatic guided vehicle, the first roll-shaped load is first placed on the automatic guided vehicle using an overhead crane or the like. Then, the second and subsequent roll-shaped loads must be placed on the automatic guided vehicle in order, and when a plurality of roll-shaped loads are loaded on the automatic guided vehicle, the number is increased by the amount that increases. The work time of was also long. However, in the present invention, even when the plurality of roll-shaped loads are placed on the automatic guided vehicle, they can be prepared on the pallet in advance, and one roll-shaped load can be loaded on the automatic guided vehicle. It can be put in a time that is completely the same as no.
[0010]
Furthermore, by providing the pallet with a hole through which the lifter provided in the transport vehicle can pass, the roll-shaped load can be lifted and lowered directly by the lifter as in the conventional case. When a roll-shaped load is connected between the automatic guided vehicle and the winding device, when supplying the winding core to the winding device, it is necessary to raise the winding core to an upper winding position. In this case, the core lifter is moved up and down directly to the winding position using the above-described core lifter. If the core is placed on the pallet, the core lifter lifts and lowers the core from below. I can't. Therefore, by forming the insertion hole, the core lifter can go up and down directly from the bottom through the insertion hole, and even if a pallet is used, the core supply operation is the same as before. Can be done. In the above description of the function and effect, the explanation is made with the automatic guided vehicle. However, the same effect can be obtained with the manned transport vehicle.
[0011]
DETAILED DESCRIPTION OF THE INVENTION
Hereinafter, embodiments of the present invention will be described in detail with reference to the drawings. FIG. 1 shows a perspective view of a pallet 30, and a V-shaped groove 31 for loading a roll is formed in a substantially central portion of the upper surface of the pallet 30, and the V-shaped groove 31 has a V-shape. Depending on the shape, positioning or regulation is performed so that the roll does not roll. Further, a V-shaped groove 32 for loading the winding core 16 is formed on the side of the V-shaped groove 31 and on the upper surface of the pallet 30. In the same manner as above, positioning or regulation is performed so that the winding core 16 does not roll in a V shape. Furthermore, the bottom of the V-shaped groove 32 is perforated with a rectangular insertion hole 33 extending vertically.
[0012]
FIG. 2 shows the automatic guided vehicle 40 loaded with the pallet 30, and a lifter 41 is provided on the upper surface side of the automatic guided vehicle 40. A table 42 of the lifter 41 can be raised and lowered by an internal hydraulic mechanism (not shown), and the pallet 30 is loaded on the upper surface of the table 42. Further, a core lifter 43 for raising and lowering the core 16 is disposed on the side of the lifter 41, and a receiving portion 44 of the core lifter 43 is provided by an internal hydraulic mechanism (not shown). It can move up and down. When the receiving portion 44 is moved up and down, it can be moved up and down through the insertion hole 33 of the pallet 30, and a V-shaped groove 45 is recessed on the upper surface of the receiving portion 44. Thus, the core 16 is loaded so as not to drop. For ease of understanding, FIG. 2 shows a case where the pallet 30 loaded with the core 16 and the roll 15 is mounted on the automatic guided vehicle 40. In the figure, 46 is a tire of the automatic guided vehicle 40.
[0013]
FIG. 3 shows a configuration diagram of the entire system. In this example, the sheet winding apparatus 1 and the sheet unwinding apparatus 10 are separately prepared as the winding apparatus. A plurality of pallet preparation stations 50 for storing the collected rolls 15 and the cores 16 are provided. Between each of these pallet preparation stations 50 and the sheet winding device 1 and the sheet unwinding device 10, a guideline 27 such as a magnetic induction type magnetic tape is laid. The automatic guided vehicle 40 travels according to the guideline 27, and moves between the sheet winding device 1 and the sheet unwinding device 10 and a predetermined pallet preparation station 50 to transport the roll 15 and the core 16 by the pallet 30. It is supposed to be.
[0014]
4 and 5 are schematic diagrams of the pallet preparation station 50. Columns 52 are arranged on both sides of a traveling path 51 on which the automatic guided vehicle 40 travels, and a shelf 53 is placed on the column 52. Is provided. The shelves 53 are formed so as to face each other with a space 54 interposed therebetween, and the pallet 30 is placed between the shelves 53 facing each other across the space 54 as shown in the figure. FIG. 4 shows the case where the supply core 16 is loaded on the pallet 30, and FIG. 5 shows the case where the supply roll 15 is loaded on the pallet 30. On the contrary, the state of the same drawing is also shown, but the state of the recovered core 16 (in the case of FIG. 4) and the recovered roll 15 (in the case of FIG. 5) is also shown.
[0015]
In this way, each pallet preparation station 50 is prepared by stacking the core 16 and the roll 15 for supplying to the sheet winding apparatus 1 and the sheet unwinding apparatus 10 on the pallet 30 in advance. Here, when placing the empty pallet 30 between the shelves 53, the roll 15 and the core 16 can be placed using another automatic guided vehicle 40 that is not being transported, an overhead crane, or the like. After installation, the supply roll 15 and the core 16 are mounted with an overhead crane. Further, the pallet 30 on which the supply roll 15 and the core 16 are mounted may be placed between the shelves 53 by using another automatic guided vehicle 40 that is not being transported.
[0016]
4 and 5, a substantially conical protrusion 47 is provided on the upper surface of the table 42 of the lifter 41 of the automatic guided vehicle 40, and a recess that fits into the protrusion 47 is recessed on the lower surface of the pallet 30. It is installed. When the pallet 30 is loaded on the table 42 of the lifter 41, the protrusion 47 and the recess fit into each other, the pallet 30 is positioned, and the pallet 30 is laterally displaced due to vibration or the like during conveyance by the automatic guided vehicle 40. To prevent it from falling. A positioning piece 55 is also provided on the upper surface of the shelf 53 so that when the pallet 30 is placed on the shelf 53, the pallet 30 is placed at a predetermined position.
[0017]
As shown in FIG. 1, a touch dog 34 as a mechanical sensor is provided at the bottom of the V-shaped groove 31 of the pallet 30, and the roll 15 is loaded on the V-shaped groove 31 by the touch dog 34. The automatic guided vehicle 40 detects whether or not it is. A similar mechanical sensor (not shown) is provided in the other V-shaped groove 32 on which the winding core 16 is loaded, and whether or not the winding core 16 is loaded in the V-shaped groove 32. Is detected by the automated guided vehicle 40.
[0018]
Next, the operation when the core 16 prepared in the pallet preparation station 50 is supplied to the sheet winding device 1 and the roll 15 is collected will be described. In the pallet preparation station 50, as described above, a large number of pallets 30 loaded with the supply core 16 are placed in advance on the shelf 53, and the automatic guided vehicle 40 that has received the command sends the guideline 27 to the pallet preparation station 50. Drive along. FIG. 6 shows a state where the pallet 30 to be transported is being picked up by the automatic guided vehicle 40, and the lifter 41 is driven to raise the table 42 through the space 54 of the shelf 53 and load the core 16. The pallet 30 is lifted. This is to prevent the pallet 30 being conveyed from hitting the shelf 53 or another pallet 30 placed on the shelf 53 when the automatic guided vehicle 40 travels.
[0019]
After the automatic guided vehicle 40 is pulled out from the pallet preparation station 50 with the pallet 30 being lifted, the lifter 41 is driven to lower the table 42 as shown in FIG. Then, in this state, the vehicle travels along the guideline 27 to the sheet winding device 1, raises the lifter 41 with the sheet winding device 1, collects the roll 15, and as shown in FIG. Load in the groove 31. Next, as shown in FIG. 9, after the table 42 is lowered, the core lifter 43 is driven to raise the receiving portion 44. In this case, the receiving portion 44 is lifted through the insertion hole 33 of the V-shaped groove 32 of the pallet 30, and the core 16 is lifted by the receiving portion 44. Then, the winding core 16 is supplied to the drive shaft 5 of the sheet winding device 1.
[0020]
After the roll 15 is collected by the sheet winding device 1 and the winding core 16 is supplied, the guideline 27 is run with the roll 15 loaded on the pallet 30 and returned to the pallet preparation station 50 as shown in FIG. . The automatic guided vehicle 40 that has returned to the pallet preparation station 50 travels with the pallet 30 lifted so as not to hit the shelf 53 or another pallet 30. When the automatic guided vehicle 40 reaches a predetermined position on the shelf 53, the table 42 is lowered and the pallet 30 is placed so as to straddle the shelf 53 on both sides.
[0021]
The automatic guided vehicle 40 on which the pallet 30 is placed on the shelf 53 operates in accordance with a command when supplying the core 16 or collecting the roll 15 to another sheet winding device 1. On the other hand, the collected roll 15 on the pallet 30 placed on the shelf 53 is transferred to the other by an overhead crane or the like regardless of the automatic guided vehicle 40 that carries it.
[0022]
Next, the case where the roll 15 is supplied to the sheet unwinding device 10 and the core 16 is collected will be described. In contrast to the previous case, since the supply is the roll 15 and the recovery is the winding core 16, it will be described with reference to the previous drawing. As for the roll 15 for supply to the sheet unwinding device 10, a large number of pallets 30 loaded with the rolls 15 are prepared and stored in advance in the pallet preparation station 50. Then, the automatic guided vehicle 40 that has received the command travels to a predetermined position of the pallet preparation station 50 and lifts the pallet 30 loaded with the rolls 15 as shown in FIG. Then, when leaving the pallet preparation station 50, as shown in FIG. 10, the table 42 is lowered and travels along the guideline 27 to the sheet unwinding device 10.
[0023]
Next, as shown in FIG. 9, the core lifter 43 is driven to collect the core 16 from which all the sheets 12 have been unwound, and the core 16 is collected by the receiving portion 44. When the winding core 16 is collected, the lifter 41 is driven to raise the table 42 and supply the roll 15 to the drive shaft 5 of the sheet unwinding device 10 as shown in FIG. Next, as shown in FIG. 7, the automatic guided vehicle 40 travels to the pallet preparation station 50 with the table 42 lowered and the winding core 16 loaded in the V-shaped groove 32, and the same as in the previous case. The pallet 30 loaded with the winding core 16 is placed on the shelf 53 of the pallet preparation station 50 (see FIG. 6).
[0024]
The automatic guided vehicle 40 on which the pallet 30 is placed on the shelf 53 operates in accordance with a command when supplying the roll 15 to the other sheet unwinding device 10 or collecting the core 16. On the other hand, the core 16 collected on the pallet 30 placed on the shelf 53 is transferred to the other by an overhead crane or the like regardless of the automatic guided vehicle 40 that carries the material.
[0025]
Thus, in this embodiment, the roll 15 and the core 16 for supply and recovery are loaded and prepared in advance on the pallet 30 regardless of the automatic guided vehicle 40, and thus the roll 15 and the core 16 on the pallet 30 are prepared. The automatic guided vehicle 40 is not constrained in loading, and the automatic guided vehicle 40 can concentrate on supplying and collecting the roll 15 and the core 16, and the automatic transport vehicle 40 transports the roll 15 and the core 16. Efficiency can be improved. Furthermore, the roll 15 and the core 16 can be simultaneously loaded on the pallet 30 to supply and collect the sheet winding device 1 and the sheet unwinding device 10, thereby further improving the conveyance efficiency. Further, even when viewed from the entire system, an efficient conveyance system can be constructed for the sheet winding device 1 or the sheet unwinding device 10.
[0026]
In addition, the roll 15 and the core 16 can be loaded on the pallet 30 at the pallet preparation station 50 by an overhead crane or other automatic guided vehicle 40. A plurality of pallets 30 can be prepared.
[0027]
In the above-described embodiment, the pallet 30 is described as an automatic guided vehicle. However, the present invention can also be applied to a transported vehicle that is transported by manpower.
[0028]
【The invention's effect】
According to the pallet of the present invention , a roll-shaped load can be prepared in advance on the pallet irrespective of the transport vehicle, so that the time during which the transport vehicle is restrained when the roll is loaded becomes short. Thereby, the conveyance efficiency of the roll-shaped load by a conveyance vehicle can be improved. Furthermore, since a plurality of roll-shaped loads can be placed on the pallet, the conveyance efficiency can be further improved.
[0029]
Furthermore, even if a roll-shaped load is placed on the pallet, only the roll-shaped load can be lifted and lowered by the lifter of the transport vehicle. It can be exchanged.
[Brief description of the drawings]
FIG. 1 is a perspective view of a pallet according to an embodiment of the present invention.
FIG. 2 is a diagram showing a state in which a pallet loaded with rolls and winding cores is mounted on an automatic guided vehicle according to an embodiment of the present invention.
FIG. 3 is a configuration diagram showing the entire system in an embodiment of the present invention.
FIG. 4 is a diagram showing a preparation state of a pallet loaded with winding cores at a pallet preparation station in the embodiment of the present invention.
FIG. 5 is a diagram showing a preparation state of a pallet loaded with rolls at a pallet preparation station in the embodiment of the present invention.
FIG. 6 is an explanatory diagram when a pallet loaded with winding cores is conveyed according to an embodiment of the present invention.
FIG. 7 is an explanatory diagram when a pallet loaded with winding cores is conveyed according to an embodiment of the present invention.
FIG. 8 is an explanatory diagram of a state in which the roll is being collected in the embodiment of the present invention.
FIG. 9 is an explanatory diagram of a state where a winding core is being supplied in an embodiment of the present invention.
FIG. 10 is an explanatory diagram when a pallet loaded with collected rolls is being conveyed according to an embodiment of the present invention.
FIG. 11 is an explanatory diagram when a pallet loaded with collected rolls is placed at the pallet preparation station in the embodiment of the present invention.
[Explanation of symbols]
DESCRIPTION OF SYMBOLS 1 Sheet winding device 10 Sheet unwinding device 11 Sheet winding core 15 Roll 16 Core 30 Pallet 31 V-shaped groove 33 Insertion hole 40 Automatic guided vehicle 41 Lifter 43 Core lifter 50 Pallet preparation station

Claims (1)

In pallets on which roll-shaped loads are placed,
A V-shaped groove is formed on the upper surface of the pallet and is formed in a substantially central portion of the pallet so as to be fitted with a roll having a sheet-like material wound around a winding core. A V-shaped groove is formed on the side parallel to the V-shaped groove into which the core is fitted, and is formed so as to penetrate in the vertical direction in the V-shaped groove into which the core is fitted. The pallet is characterized in that an insertion hole is formed, and the insertion hole is a hole through which a lifter that moves up and down from a transport vehicle on which the pallet is placed is passed.

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