JPH0466771B2 - - Google Patents

Description

DETAILED DESCRIPTION OF THE INVENTION [Field of Industrial Application] The present invention relates to a tire depalletizer for taking out tires stacked in, for example, six to eight stages, from a shelf pallet. (Hereinafter, this type of tire will be referred to as a stacked tire.) [Problems of the prior art to be solved by the invention] The pallet for stacking tires on a shelf has a special pipe structure, and the stacked tires are placed inside this shelf pallet. was loaded. However, in the past, there was no tire depalletizer, and the problem was that the tires had to be taken out one by one manually, which required a great deal of labor and time.

[Purpose of the invention]

The present invention was devised in order to solve the above-mentioned conventional problems, and is capable of mechanically removing stacked tires by simply placing a shelf pallet on the single tilting arm of a pallet reversing machine. The purpose is to provide a tire depalletizer that is effective for automation.

〔Example〕

An embodiment of the present invention will be described below with reference to the drawings.

The tire depalletizer main body of the present invention lays the shelf pallet 4 sideways and compresses the stacked tires M interposed between the upper and lower parallel longitudinal members 2 of the shelf pallet 4 in the tire stacking direction. It is a device for taking out the pallet 4, and includes opposing upper and lower roller conveyors 5 and 6, a pallet reversing machine 10, and an alignment device 11.
It is composed of. A roller conveyor 12 for moving pallets is provided on one side of the rear side of the lower roller conveyor 5 in the tire conveyance direction. The main body of the tire depalletizer, which is equipped with this roller conveyor 12 on the pallet input/output side, is a movable trolley that can be run by a drive device 14 on rails 13 laid on the ground in a direction perpendicular to the tire conveyance direction of the upper and lower roller conveyors 5 and 6. It is installed on 15. A turntable 1 is disposed on one side of the traveling line of the movable cart 15.
6 is installed so as to be horizontally rotatable by a drive device 17 via a gear mechanism 18, and a roller conveyor 19 connectable to the roller conveyor 12 is provided on the turntable 16. Furthermore, on the other side of the traveling line of the mobile cart 15, two storage conveyors 20 connectable to the lower roller conveyor 5 are provided for each tire item (diameter and thickness). The trolley 15 is provided with a trolleybus duct 21 for receiving electrical and control signals for equipment mounted thereon, and a read head 23 for reading the storage conveyor number 22.

Note that the turntable 16 has 2 lines 1
One storage conveyor 20 is provided at a position opposite to the storage conveyor 20 of the set.

The shelf pallet 4 has parallel longitudinal members 2 made of pipes mounted on a base 1 formed on a frame that can be transported by a forklift so as to form three stacked rectangular tire storage spaces opened on one side. The upper horizontal members 3 are framed, and the inner spacing of the parallel longitudinal members 2 is formed to be approximately the same as that of the stacked tires M.

The pallet reversing machine 10 includes tilting arms 7 and 8 that are connected in an L shape and are rotatable in a vertical plane about a bent portion 9 by a tilting device 24.
The lower roller conveyor 5 is supported by a bearing 25 between the rear side portion of the lower roller conveyor 5 in the tire conveyance direction and the roller conveyor 12 . The tilting arms 7 and 8 are formed in a comb-teeth shape so that they can move in and out between the rollers of the roller conveyors 5 and 12. The pallet reversing machine 10 then moves the base 1 onto the roller conveyor 12.
The shelf pallet 4 supported by the tilting arms 7 and 8
is tilted by 90 degrees around the bent portion 9, thereby being tilted by 90 degrees and supported on the side of the parallel vertical member 2. The tilting arms 7, 8 are configured to hold the parallel longitudinal members 2 below the tire conveyance plane of the lower roller conveyor 5. The upper and lower roller conveyors 5 and 6 are arranged in three rows in parallel so that they can be driven by drive devices 26 and 27 via chain sprocket mechanisms 28 and 29.
0,31 and chain sprocket mechanism 2
8 and 29 are the tilting arms 7 of the pallet reversing machine 10;
It is configured to be able to move inward in the direction opposite to the parallel vertical members 2 without interfering with the parallel vertical members 2 and the upper horizontal members 3 of the shelf pallet 4 in a sideways state supported above.

An elevating frame 32 is disposed above the front side of the lower roller conveyor 5 in the tire conveyance direction so as to be movable up and down by an elevating device 34 via an elevating guide 33. Frame 3 of upper roller conveyor 6
1 is engaged with and supported by this elevating frame 32 and stored in a position where it does not interfere with the shelf pallet 4 rotated by the tilting arms 7 and 8. This frame 31 can be freely projected by a drive device 36 via a rack and pinion mechanism 35 to a position facing the upper roller conveyor 5, and returned to a position where the shelf pallet 4 and the frame 31 do not interfere.

The centering device 11 is provided on a panel support stand 37 with a spring-type shock absorbing mechanism provided on the tilting arm 8 of the pallet reversing machine 10 and on the movable cart 15 on the opposite side of the roller conveyor 12 with the lower roller conveyor 5 in between. It is composed of a pressing cylinder 39 mounted on a pedestal 38.

[Effect]

After carrying out the shelf pallet 4 from the multi-storey warehouse using a lift car and placing it on the turntable 16, the storage conveyor 20 is selected and the start button of the tire depalletizer is pressed, and the turntable 16 horizontally rotates by 90 degrees. At the same time, the tire depalletizer runs on the movable trolley 15 while reading the storage conveyor address 22 with the read head 23, and moves to the selected predetermined storage conveyor 20 between the lower roller conveyor 5 and the roller conveyor 1.
Stop with 2 and 19 connected. In this state, after the shelf pallet 4 is transferred from the turntable 16 onto the tire depalletizer by the roller conveyors 12 and 19, it is transferred to the pallet reversing machine 10.
When the shelf pallet 4 is tilted by 90 degrees, the shelf pallet 4 is supported by the tilting arms 7 and 8 on the pallet reversing machine 10 and tilted, and the shelf pallet 4 is tilted on the tilting arm 7 which has entered between the rollers of the lower roller conveyor 5. Parallel longitudinal members 2 are supported,
Since the parallel longitudinal members 2 are held below the tire conveying surface of the lower roller conveyor 5, the stacked tires M in the shelf pallet 4 are supported on the lower roller conveyor 5 in an upright state.

Next, after protruding the upper roller conveyor 6 to a position facing the lower roller conveyor 5, when the upper roller conveyor 6 is lowered, the stacked tires M are
It is sandwiched between upper and lower roller conveyors 5 and 6.

Next, the shelf pallet 4 is pressed against the base 1 by the pressing cylinder 39 of the centering device 11, and the panel support stand 3 supporting the base 1 on the tilting arm 8
When the shelf pallet 4 is pushed by 50 mm, for example, against the spring force of 7, the shelf pallet 4 moves toward the base 1 with respect to the stacked tires M sandwiched between the upper and lower roller conveyors 5 and 6, and the stacked tires M The stacked tires M and the shelf pallet 4 are aligned to eliminate the shift of the shelf pallet 4 toward the base 1 due to its own weight during shelf stacking.

Next, when the stacked tires M are transported forward in the tire transport direction by driving the upper and lower roller conveyors 5 and 6, the tire transport surfaces of the upper and lower roller conveyors 5 and 6 are located inside the upper and lower parallel vertical members 2 of the shelf pallet 4 in the opposing direction. Moreover, since the stacked tires M are placed at the height direction position (at the center of the opening of the tire storage space) where the stacked tires M can be taken out from the shelf pallet 4 by the above-mentioned alignment work, the stacked tires M are It is taken out from between the parallel longitudinal members 2 of the shelf pallet 4 by upper and lower roller conveyors 5 and 6.

After that, the pressing cylinder 39 of the alignment device 11
At the same time, the upper roller conveyor 6 is raised to the upper limit position, and from the position facing the roller conveyor 5, the shelf pallet 4 rotated by the tilting arms 7 and 8 interferes with the upper roller conveyor 6. By evacuating the pallet inverting machine 10 to a position where it is not possible (inside the lifting frame) and tilting the pallet inverting machine 10 by 90 degrees,
The empty shelf pallet 4 is returned onto the roller conveyor 12. This shelf pallet 4 is transported by a roller conveyor 12,
19 to return it onto the turntable 16, and after turning the turntable 16 by 90 degrees, it may be discharged by a forklift.

On the other hand, the stacked tires M on the lower roller conveyor 5
is discharged onto the storage conveyor 20 by the lower roller conveyor 5 and the storage conveyor 20.

In this case, if the storage conveyor 20 connected to the lower roller conveyor 5 is full, the lower roller conveyor 5 is reconnected to another storage conveyor 20 by the movement of the moving cart 15 and the stacked tires M are discharged thereto. do it.

In this embodiment, the pressing cylinder 39 of the centering device 11 is provided on the moving carriage 15, but it may be provided on the tilting arm 7 of the pallet reversing machine 10. Various other applications are possible without departing from the gist of the present invention.

Further, although the present invention is a tire depalletizer,
It goes without saying that it can be used as a depalletizer in the form of a disc or donut similar to a tire.

〔Effect of the invention〕

As described above, in the present invention, after a shelf pallet is tilted by 90 degrees using a pallet reversing machine and laid on its side,
The stacked tires in this shelf pallet are sandwiched and compressed by the vertical roller conveyor, and in this state, the shelf pallet is shifted toward the base side to align the stacked tires and the shelf pallet, and then the stacked tires are moved up and down. The configuration allows the tire depalletizer to be mechanically reliably operated, and sequence control is possible from the procedure. is fully possible. The structure is simple and movement is easy, so failures are rare. With simple movements, the cycle time of the tire depalletizer can be shortened and work efficiency can be greatly improved.

[Brief explanation of the drawing]

1, 2, and 3 are a plan view, a front view, and a right side view showing one embodiment of the present invention. M...Stacked tires, 4...Shelf pallet (base 1, parallel longitudinal members 2, upper cross members 3), 5...Lower roller conveyor (drive device 26, chain/sprocket mechanism 28, frame 30), 6... ...Upper roller conveyor (drive device 27, chain sprocket mechanism 29, frame 31, lifting frame 3
2. Elevating guide 33, elevating device 34, rack and pinion mechanism 35, drive device 36), 10... Pallet reversing machine (tilting arms 7, 8, bending portion 9, tilting device 24, bearing 25), 11... Centering device (pallet support stand 37, pressing cylinder 39).

Claims (1)

[Claims] 1 Frame the parallel vertical members 2 and the upper cross members 3 on the base 1 so as to configure a rectangular tire storage space opened on one side of the shelf pallet 4, and set the inner interval of the parallel vertical members 2 to the stacked tires M. In this device, tilting arms 7 and 8 can be rotated in a vertical plane in a device for standing up and taking out stacked tires M lying on their side, which are interposed between the parallel vertical members 2 of a shelf pallet 4 formed to have approximately the same height. One of the tilting arms 7 is formed in a comb-teeth shape so as to be able to support the parallel vertical members 2 of the shelf pallet 4 and to allow the parallel vertical members 2 to be taken in and out between the rollers of the lower roller conveyor 5. , and a pallet reversing machine 10 capable of holding the parallel vertical members 2 below the conveying surface of the stacked tires M and disposed on the rear side of the lower roller conveyor 5 in the tire conveyance direction, stands the stacked tires M. It is disposed at a position that does not interfere with the lower roller conveyor 5 that conveys the pallets as they are and the shelf pallet 4 at the front upper part of the lower roller conveyor 5 in the tire conveyance direction, and can freely reciprocate to a position facing the lower roller conveyor 5. , and an upper roller conveyor 6 that can be raised and lowered,
At the rear side of the lower roller conveyor 5 in the tire conveyance direction, the shelf pallet 4 or the stacked tires M on the lower roller conveyor 5 are moved in the width direction, so that the center of the shelf pallet 4 and the stacked tires M is aligned. This device is mounted on a movable trolley 15 that can travel in a direction perpendicular to the tire removal direction, and a lower roller conveyor 5 is installed on one side of the traveling line of the movable trolley 15. Multi-line storage conveyor 2 that can be connected to the exit end of
A tire depalletizer characterized by providing a zero.