JP2603444Y2 - Pallet conveyor equipment - Google Patents

Description

[Detailed description of the invention]

[0001]

BACKGROUND OF THE INVENTION The present invention relates to a pallet conveyor device.

[0002]

2. Description of the Related Art Consumer needs are becoming more individualized and diversified.
Distribution is also becoming more diversified, smaller, and more frequent. Against this background, in recent years, in order to be able to respond quickly to the acceptance, centralized management and shipping of various products (products), indoors, automatic warehouses, high-speed automatic sorting machines (sorters) for small items, palletizers, Research and development of a logistics center in which a depalletizer, a car truck, and the like are provided and each device is connected by a conveyor line are being promoted. In this type of center, the conveyor line from the car truck to the automatic warehouse and the conveyor line from the automatic warehouse to the warehouse are composed of roller conveyors that convey packages and other items in pallets. A stacker crane that automatically runs between the discharge end of the roller conveyor and
Some pallets are dispensed from roller conveyors and are automatically stored in designated shelves in an automatic warehouse.

[0003]

[Problems to be solved by the invention] However, the pallet has a width of 1100 mm ×
There are two types, one with a length of 1100 mm (hereinafter, referred to as “T11 pallet”) and one with a width of 800 mm × length of 1,100 mm (hereinafter, referred to as “T8 pallet”).
Even if the conveyor width is configured to be compatible with the T11 pallet so that both the T11 pallet and the T8 pallet can be transported in size, there is a problem that the T8 pallet cannot be delivered to the correct position on the roller conveyor. . This is because, when the pallet width becomes smaller than the conveyor width by a certain degree or more, the T8 pallet having a non-uniform bottom surface state is affected by the speed difference (operation, stop) between the car truck and the roller conveyor due to the influence of the roller conveyor (hereinafter, referred to as “roller conveyor”).
"Pallet conveyor". ) Above, or rotate off the center of the conveyor. Therefore, from the viewpoint of preventing the pallet from being damaged when the pallet is discharged by the stacker crane and preventing the pallet from being stored in the correct position on the shelf to prevent the pallet from falling due to an earthquake or the like, this phenomenon must be solved. No.

[0004] The purpose of this invention is to shift the T8 pallet,
It is an object of the present invention to provide a pallet conveyor device provided with means for mechanically correcting the rotation.

[0005]

SUMMARY OF THE INVENTION In order to achieve the above object, the present invention provides a pallet conveyor which takes over a pallet from a transport device such as a car truck and transports the pallet with a roller to an automatic warehouse. on both sides, provided with a pushing means for feeding the respective pallets of the pallet conveyor to centering <br/> grayed direction, between the pushing means, provided free rollers for moving rolling pallet of the conveyor to the centering direction liftably Of the pallet at the entrance side of the conveyor
Pallet discriminating means is provided to detect the pallet width.
The pallet width detected by another means is transferred to the roller conveyor.
When the width of the pallet is shorter than the maximum width,
Stops, raises the free roller, secures the pushing means
Controller that sequentially starts the conveyor and starts the conveyor.
A roller is provided .

[0006]

[Action] at the inlet side of the centering conveyor, Pa
The pallet width of the pallet is detected by the let discriminating means.
When the width of the detected pallet is smaller than the maximum width of the pallet to be fed to the pallet conveyor, the free roller is raised and the pushing means is operated. The pallet is centered in the correct position with respect to the pallet conveyor.

[0007]

DETAILED DESCRIPTION OF THE PREFERRED EMBODIMENTS A preferred embodiment of the present invention will be described below with reference to the accompanying drawings.

FIG. 1 is a plan view of the pallet conveyor according to the present invention, FIG. 2 is a sectional view taken along line AA of FIG. 1, and FIG. 3 is a sectional view taken along line BB of FIG. 4 shows the positional relationship between the T8 pallet and the sensor in the vertical and horizontal directions, and FIG. 5 shows a plan view of FIG.

As shown in FIG. 1, the pallet conveyor 1 takes over the T8 pallets P ₁ and T11 pallets P ₂ from a transport device (not shown) such as a car truck, and transports them to the front of an automatic warehouse by rollers. Conveyor frame 2
A large number of conveyor rollers 3 are arranged at intervals in the pallet conveyance direction. Each of the conveyor rollers 3 integrally has a rotating shaft 4 at both ends thereof.
Are rotatably supported on bearings 5 of the conveyor frame 2 as shown in FIG. A sprocket 6 is integrally attached to one rotating shaft 4 of each of the conveyor rollers 3 to rotate the conveyor rollers 3 by receiving power transmission. In the present embodiment, in order to be able to drive the conveyor roller 3 without difficulty, the drive motor 7 is provided for each area by dividing the pallet conveyor 1 into a plurality of parts in the loading direction. The driving sprocket 8 of the driving motor 7 and the conveyor roller 3
And an endless chain 9 is wound around each of the sprockets 6. Therefore, when all the drive motors 7 are rotated in synchronization with the pallet conveyance direction, the rotation of the conveyor roller 3 causes the T8 pallets P ₁ and T11 pallets P ₂ placed thereon to move to the entrance of the pallet conveyor 1. From the outlet to the exit.

[0010] However, the rotation of the T8 pallet P ₁ for such pallet conveyor only configuration, the deviation can not be prevented still.

[0011] pallet conveyor 1 for this purpose, the centering direction of both the conveyor frame 2 to each pallet conveyor 1 is identical stroke movement, the extrusion apparatus 11 for positioning extruding the resulting T8 pallet P ₁ to the centering position, the during extrusion of the extrusion device 11, the T8 pallet P _1, in order to be able to move smoothly to the centering direction, in the extrusion area of the extrusion device 11, appropriately T8 pallet P ₁ from the roller surface of the conveyor roller 3 a free roller device 12 for moving rolling was raised and T8 pallet P ₁ to the centering direction, pallets inherited from the cart rack to the pallet conveyor 1, a pallet determination means for determining whether T8 pallet P ₁ or T11 pallet P ₂ Pallet discriminator Stop of the driving motor 7 based on the signal, controls the rotation, is configured to include a controller 14 for controlling operation of the extrusion apparatus 11, the non-working.

FIG. 3 shows an embodiment in which the pushing device 11 is incorporated in the free roller device 12.

The free roller device 12 is used to move the lifting frame 1
5, a free roller 16, a cam lever 17, and a first fluid cylinder 18. The lifting frame 15 is provided in a lifting space formed by removing the conveyor roller 3 on the loading end side of the pallet conveyor 1 so as to be movable up and down. The free rollers 16 are rotatably mounted on shafts 19 provided above the elevating frame 15 at intervals in the width direction of the pallet conveyor 1. Therefore, the free rollers 16 can rotate in the width direction of the pallet conveyor 1, and the T8 pallets P ₁ placed on the pallet conveyor 1 can be rotated.
Rolling movement in the centering direction. The cam lever 17 and the first fluid cylinder 18 raise and lower the height position of the free roller 16 to two positions: a position appropriately higher than the roller surface of the conveyor roller 3 (H position) and a position lower than the conveyor roller 3 (L position). The base of the cam lever 17 is pivotally supported on the lower part of the conveyor frame 2 so as to be rotatable around a horizontal axis, and the first fluid cylinder 18 is connected to the other end of the cam lever 17 ( And a lower portion of the conveyor frame 2.

Therefore, the lever length of the cam lever 17, the first
When the stroke of the fluid cylinder 18 is adjusted to extend the first fluid cylinder 18, the elevating frame 15 is raised to the H position, and when the first fluid cylinder 18 is contracted, it is lowered from the H position to the L position. Reference numeral 20 denotes a cam lever 1 for driving the two cam levers 17 in synchronization with each other.
Reference numeral 21 denotes a link rod provided so as to extend over the other end of the lifting frame 7, and reference numeral 21 denotes a first stopper provided to set a lower limit of the lifting frame 15.

The extrusion apparatus 11 includes, T8 pallet P ₁ presses T8 pallet P ₁ of a left and right pair of opposite sides portion respectively
In the width direction of the pallet conveyor 1 (centering direction)
The first and second pressure plates 22 to be moved to
23, a guide rod 24 provided under the lifting frame 15 so as to extend in the width direction of the pallet conveyor 1.
And a first and second guide block integrally attached to the lower portions of the first and second pressure plates 22 and 23, and attached to the guide rod 24 so as to be movable and restricted in rotation. 25, 26 and a fluid cylinder provided so as to span the lower surfaces of the first and second guide blocks 25, 26, wherein the first guide block 25 and the second guide block 26 are moved toward and away from each other. A second fluid cylinder 27 that moves in the
The second stoppers 2 integrally attached to the guide rods 24 for setting the inward movement limit of the guide blocks 25 and the second guide blocks 26 in the width direction.
8 and a third stopper 29. The cylinder body 30 of the second fluid cylinder 27 is integrally fixed to the elevating frame 15.

[0016] Accordingly, immediately after passing T8 pallet P _1, to stop the pallet conveyor 1 once, raising the lift frame 15 by extending the first fluid cylinder 18, ask then shrink the second fluid cylinder 27 First, the conveyor frame 3 is moved from the conveyor roller 3 to T8 by the lifting frame 15.
Pallet P ₁ is floating, and then by the first, second pressure plate 22, 23, T8 pallet P ₁ is moved rolling on the free roller 16 to the centering direction, a left and right pair of opposite sides of the T8 pallet P ₁ at the centering position Are parallel to the conveying direction of the pallet conveyor 1.
Thereafter, the second fluid cylinder 27 is extended to
To release the centering due to the pressure plate 22, a first fluid cylinder 18 is contracted to release the lifting of the T8 pallet P _1, then, by driving all of the drive motor 7, T8 pallet P _1, the The pallet conveyor 1 is conveyed from its entrance to its exit in the centering state. Therefore, the pallet of the defect in question during pallet payout of the stacker crane (not shown), a conventional problem of T8 pallet P ₁ on the shelf of the automatic warehouse is receipts inclined is once eliminated.

[0017] Now, a palette that has been handed down from the cart rack to the pallet conveyor 1, T8 pallet P ₁ or T1
1 pallet discriminating means for pallet P ₂ or the determined automatically, as shown in FIGS. 4 and 5, the first sensor 33 and second sensor to set the light projector 31 and the photodetector 32 34.

Each of the light projectors 31 constituting the first and second sensors 33 and 34 is provided at a lower position inside both sides of the conveyor 1, and the light receiver 32 is located above both sides of the conveyor 1 above. Each is provided. And each projector 31 and the light receiver 32 More specifically, FIG. 4, as shown in FIG. 5, when the T8 pallet P ₁ on the pallet conveyor 1 is biased rotating or one side, this one sensor O
N, and are provided at positions where the other sensor can be sensed as OFF.

The controller 14 is basically configured to perform the following functions. Controller 14
When the pallet is received, the drive motor 7 is stopped, and after the pallet is received, only the drive motor 7 provided closest to the carry-in end is driven in the transport direction to move the pallet to the first and second pressure plates 22, 22. 23 (see FIGS. 2 and 3). And at that position, the first
Sensor 33 and receives an input signal of the second sensor 34, the pallet before conveyance T11 pallet P ₂ or, T8 pallet P
Determine if it is ₁ . That controller 14, one sensor is ON, only when the OFF of the other sensor, the pallet for transporting is determined that T8 pallet P _1, then performs centering control of T8 pallet P ₁ (FIG. 4 reference). Centering control is performed on the T8 pallet P ₁
In order to correct the position and its rotation, the first fluid cylinder 18 is first extended and then the second fluid cylinder 27 is retracted. And after centering control executed, extending action of the second fluid cylinder 27, then the first fluid cylinder contracts operated, transferring all T8 pallet P ₁ is driven in the conveying direction drive motor 7 after this to the automatic warehouse side I do.

Therefore, the pallet connected to the centering conveyor is automatically determined by the first and second sensors 33 and 34 and the controller 14, and the determination result is T.
When it is determined that 8 pallets P _1, automatically become centering control is executed, the reliability of the goods receipt operations of the stacker crane is substantially improved.

[0021]

[Effects of the Invention] As is apparent from the above description, the present invention provides the following excellent effects.

[0022] (1) According to the invention according to the above configuration, it can be reliably centered moving pallets short pallet width centering position.

(2) Further, by pallet discriminating means
The pallet width of the pallet is automatically determined, and the
Only when it is determined that the pallet width is short, the pallet can be automatically centered at the centering position, and the conveyance of the pallet can be automatically continued. Pallet width is short
If not, centering is not performed and transfer efficiency is improved.
I can do it.

[Brief description of the drawings]

FIG. 1 is a plan view of a pallet conveyor device according to the present invention.

FIG. 2 is a sectional view taken along line AA of FIG.

FIG. 3 is a sectional view taken along line BB of FIG. 2;

FIG. 4 is a diagram showing a relationship between a T8 pallet and a sensor.

FIG. 5 is a diagram showing rotation of a T8 pallet and a state of deviation.

[Explanation of symbols]

1 pallet conveyor 3 conveyor rollers 15 lift frame 16 free rollers 22 first pressure plate (pushing means) 23 second pressure plate (pushing means) 18 first fluid cylinder 27 the second fluid cylinder P ₁ T8 pallet P ₂ T11 pallet

────────────────────────────────────────────────── ─── Continuing on the front page (72) Inventor Tadayoshi Tonowaki 1-19-6 Asahimachi, Kawasaki-ku, Kawasaki-shi, Kanagawa Prefecture (72) Mikio Uda 5-524-naka, Mukoyocho, Higashinada-ku, Kobe-shi, Hyogo Prefecture 1412 (72) creator Nobuo Nakazawa 309 Idana, Hiratsuka-shi, Kanagawa Prefecture (72) creator Tatsuro Kobayashi No.3, Yotsuzuka, Oji Noda, Koda-cho, Nada-gun, Aichi Prefecture Central Conveyor Stock Company In-house (72) creator Kage Sato Kishi 1-19-10 Mohri, Koto-ku, Tokyo Ishikawa-jima-Harima Heavy Industries, Ltd. Koto Office (56) References JP-A-2-62309 (JP, A) JP-A 5-69923 (JP, A) 48-40979 (JP, U) (58) Fields investigated (Int. Cl. ⁷ , DB name) B65G 47/22-47/32 B65G 47/88

Claims (1)

(57) [Scope of request for utility model registration] 1. A this inherited pallet from the transport device such as a car track to front automatic storage in the pallet conveyor rollers transport, the pallet conveyor both <br/> side of the inlet side, the pallet of the pallet conveyor, respectively A push-out unit for sending the pallet to the centering position is provided, and a free roller for rolling the pallet in the centering direction is provided between the push-out units so as to be movable up and down.
Pallet discriminating means is provided on the entrance side of the conveyor to detect the pallet width of the pallet, and when the pallet width detected by the discriminating means is shorter than the maximum width of the pallet flowing to the roller conveyor, stopping the conveyor, A pallet conveyor device comprising a controller for sequentially raising the free roller, centering the pushing means, and starting the conveyor.