JPS638015B2 - - Google Patents

Description

DETAILED DESCRIPTION OF THE INVENTION The present invention relates to a pallet loading device. More specifically, the present invention relates primarily to an apparatus for loading box pallets with synthetic rubber bales or similar items in multiple stages.

Although various devices are known for placing items on ordinary pallets, there are almost no known devices for loading items onto an open-top box pallet whose four sides are surrounded by plates. In other words, when loading synthetic rubber bales or similar items onto a box pallet, the conventional methods were to load the items onto a regular pallet and then surround the sides with plates, or to have a worker enter the box pallet and load the items. The methods used include loading items one by one, and loading items after suspending them using a holding device and transferring them onto a box pallet.

However, the above method is labor-intensive, and the above method is not only easy to drop when moving the item by hanging it on a holding device, but also when the size of the box pallet is small compared to the size of the item. has disadvantages such as difficulty in loading.

In view of the above circumstances, it is an object of the present invention to be able to automatically load items onto pallets without relying on human labor, to eliminate the risk of items falling during the loading process, and to have sufficient size. The purpose is to provide an extremely practical pallet loading device that can easily load even box pallets that are not packed. a holding device that removably holds the items on the cart; a compression device below the holding device that compresses the items on the moving cart from the outside; and an upper part of the compression device. The apparatus is equipped with a prevention device for preventing the items from floating when compressing and forming the items, and a pallet lifting device for vertically moving the pallet on which the items held by the holding device are loaded. Fixedly disposed above the device,
The pallet loading device is characterized in that the movable cart is configured to be movable forward and backward to below the holding device, and the platform is configured to be movable up and down.

That is, in this device, the holding device is fixedly provided, the moving cart is moved forward to transfer the article to the bottom of the holding device, the article is raised to be held by the holding device, and then the moving cart is moved backward, This is a device for lifting a pallet up to the items held by a lifting device and loading the items onto the pallet.

Furthermore, this device is capable of loading one stage of goods onto a pallet in the single loading process, and then automatically repeating this process to load goods into multiple stages.

Hereinafter, the present invention will be explained in detail with reference to embodiments shown in the drawings.

1 to 3 are diagrams showing an embodiment of the loading device according to the present invention, and FIG. 1 is a conceptual plan view, and FIG.
The figure is a conceptual side view, and FIG. 3 is a conceptual perspective view.

As shown in the figure, this device mainly consists of a mobile cart 1
, a holding device 2, a pallet lifting device 3, a compression device 26, and a floating prevention device 55.

The mobile cart 1 includes a mounting table 1 on which an article 4 is placed.
a on the upper part, and is configured to be movable forward and backward to below the holding device 2, and the mounting table 1a is configured to be movable up and down.

In this embodiment, a rail 6 of a predetermined length is provided at the center of the frame 5, sprocket wheels 7 are provided at both ends of the rail 6, and the trolley 1 is connected to a chain 8 mounted on the wheel 7. There is. The wheels 7 are connected to an electric motor 10 which is capable of forward and reverse rotation via a transmission mechanism 9 such as a chain, so that the trolley 1 can be moved forward and backward. The trolley 1 has a known telescoping mechanism 11, and the telescoping mechanism 11 allows the mounting table 1 to
A is configured to be movable up and down. In configuring the mounting table 1a to be movable up and down, in addition to providing the telescoping mechanism 11, the cart 1 itself may be configured to be movable up and down. Note that 12 is a wheel provided on the trolley 1. Furthermore, the rails 6 are arranged so as not to interfere with the lifting of the pallets, which will be described below.

The holding device 2 is fixedly disposed above the frame 2, that is, in a non-movable manner, and the movable trolley 1
By providing above the movement trajectory of the moving trolley 1
is configured so that it can move forward to below the holding device 2 and retreat from below the holding device 2. Such a holding device may be any device as long as it can hold the item 4 that has been raised by the mounting table 1a and can also securely hold the item 4 even after the mounting table 1a is lowered, such as scissors, an electromagnet, or a vacuum suction cup. etc. may be selected and used as appropriate depending on the type, shape, etc. of the item. If the item is a synthetic rubber bale or the like, a vacuum suction cup is preferred because it can draw air from the packaging of the item to reduce the volume of the item. Scissors, electromagnets, and
The number of vacuum suction cups etc. is preferably equal to or greater than the number of items to be held. If the item is a synthetic rubber bale weighing approximately 35 kg, it is preferable to provide twice the number of bales (six in this example) to be stacked in one layer of the pallet at positions corresponding to the arrangement of the bales. When loading the retained items onto a box pallet, the pallet is raised as described below;
Since the holding device may fit inside this box, in this case, the tip of the holding device needs to be large enough to be inserted into the box.

In this embodiment, a vacuum suction cup is used as the holding device 2. That is, a vacuum suction cup supporting frame 13 is provided above the frame 5, and a plurality of vacuum suction cups 14 are attached to the frame 13 via a plurality of support rods 15. The support rod 15
is brought into a vacuum state via a suction hose 17 connected to a vacuum pump 16.

The pallet lifting device 3 is disposed below the movable cart 1 and below the holding device 2 in a corresponding position. This elevating device 3 raises the pallet 18 to a loading position immediately below the article 4 held by the holding device 2 in order to store the article 4, and also moves the pallet 18 to the movement of the moving cart 1. Any device may be used as long as it can be lowered to a position that does not cause any trouble and can be stopped at a free position.

In this embodiment, a vertical guide rail 19 is provided on the side of the frame 5, a lifting platform 20 is disposed along the rail 19 so as to be able to rise and fall freely, and a hydraulic pressure for the lifting platform is provided on the side of the frame 5. cylinder 32
is erected, a sprocket wheel 23 is rotatably mounted on the upper end of the piston rod 22 of the cylinder, a chain 24 is mounted on the wheel 23,
One end of the chain 24 is connected to the lifting platform 20, and the other end is connected to the lower part of the frame 5.

The present embodiment further includes the following means.

First, a compression device 26 is provided for compressing the article on the movable cart 1 from four directions outside and adjusting the shape of the article before the holding device 2 holds the article. The device 26 is advantageous when the item, such as a synthetic rubber bale, is temporarily reduced in size by compression, making it easier to feed into a box pallet. The device 26 is provided corresponding to the position of the article before it is held by the holding device 2.

In this embodiment, the compression device 26 is provided below the suction cup 14 at a position corresponding to the item on the elevated mounting table 1, and is arranged in four directions outside of the item to be compressed. It is composed of four pressing plates 27. Each pressure plate 27 is connected to a piston rod 28 of a hydraulic cylinder provided in the frame.
It is connected to a guide rack gear 29 which is connected to a gear provided on the frame.

In this embodiment, when compressing an elastic material such as a synthetic rubber bale, the product will float when compressed, and as a device to prevent this, a presser plate that can be moved up and down is used. A floating prevention device 55 is provided. The device 55 includes a vacuum suction cup supporting frame 13 above the frame 5.
A plurality of vacuum suction cups 1 are mounted on the frame 13.
4 are attached via a plurality of support rods 15.

Using the space between the vacuum suction cups 14, a lifting prevention presser plate 56 is attached to the vacuum suction cup support frame 13.
A supporting frame 60 is provided to support an air cylinder 57 that operates the air cylinder 57, and to the frame 60 are attached an air cylinder 57 that operates a plurality of anti-lifting plates 56 and guides 59 provided on the left and right sides of the air cylinder 57. .

The lifting prevention presser plate 56 is the air cylinder 5
It is connected to the piston rod 58 and guide 59 of No. 7. Although hydraulic pressure and other known means can be applied to the means for moving the presser plate up and down, an air cylinder is preferably used.

In this embodiment, after loading the items onto the mobile cart 1 from the item loading device described below,
An alignment device 30 is provided for aligning and positioning the articles at predetermined positions on the movable cart 1. The device 30 is provided at a position where the movable trolley 1 is most retracted and receives items from the carry-in device. The device 30
consists of two alignment plates 31 for pressing and aligning the items on the moving cart 1 from the left and right sides, and the alignment plates 31 are connected to piston rods 32 of air cylinders provided on the left and right sides of the frame, and It is connected to a guide rack gear 33 that meshes with gears provided on the left and right sides of the guide.

The article loading device 35 is a device for loading the articles 4 onto the movable trolley 1 from a predetermined position. , a carry-in conveyor 36 consisting of a belt conveyor, etc., a direction change conveyor 37 provided adjacent to the conveyor 36,
A feed conveyor 38 consisting of a drive roller conveyor etc. provided adjacent to the conveyor 37, an accumulation conveyor 39 consisting of a drive belt conveyor etc. connected to the conveyor 38, and an article pushing device provided in front of the conveyor 39. 40.

A turn device 41 is provided in the middle of the feed conveyor 38 toward the side from the center so as to be movable up and down. A stopper 42 is provided at the tip of the accumulation conveyor 39, and a spacer 44 that is moved up and down by a cylinder device 43 is provided at the intermediate portion. The article extrusion device 40 has four sprocket wheels 45 disposed on the left and right sides of the frame 5 at the top, bottom, front and rear, and endless chains 46 mounted on these left and right wheels 45. It is made up of a plurality of pushing body rollers 47 placed at predetermined intervals. The sprocket wheel 45 is connected to an electric motor 49 via a transmission mechanism 48 such as a chain.

This embodiment further includes a pallet loading/unloading device 51.
It is equipped with The device 51 includes a pallet conveyor 52 consisting of a roller conveyor or the like provided corresponding to the position of the lifting platform 20, a pallet supply conveyor 53 consisting of a chain conveyor or the like connected to one end of the conveyor 52, and a pallet supply conveyor 53 consisting of a chain conveyor or the like connected to one end of the conveyor 52. The pallet delivery conveyor 54 is composed of a continuous roller conveyor or the like.

Next, the operation of the above device will be explained.

First, an empty box pallet 18 is supplied by the pallet supply conveyor 53, and the lifting platform 20 is raised by the pallet conveyor 52, so that the box pallet 18 is raised a predetermined distance from the pallet conveyor 52. In this case, the box pallet 18 corresponds exactly below the holding device 2.

On the other hand, the movable cart 1 is moved back to the end so that it is adjacent to the article pushing device 40, and the height of the mounting table 1a is also set at the same level as the pushing device 40. next,
Goods (film-wrapped synthetic rubber bales)
4 from the carry-in conveyor 36 to the direction change conveyor 37
After the conveyor 37 changes direction, the conveyor 38 conveys the
Move the turn device 41 up and down on the item 4 as appropriate.
The direction of the products is changed and the products are transferred to the accumulation conveyor 39, the front stopper 42 or the intermediate spacer 44 is moved up and down, and the products are stopped at the spacers 44, and the products are sent and aligned on the product extrusion device 40 by the accumulation conveyor 39. This operation is repeated a predetermined number of times to align a plurality of items 4 on the extrusion device 40 in a predetermined pattern, and after one stage of items 4 are aligned, the endless chain 46 is rotated by the electric motor 49, and the items 4 are It is pushed by the pushing body roller 47 and transferred onto the movable cart 1, and the rotation of the chain 46 is stopped.

One stage of articles 4 is placed on the moving trolley 1, and the articles 4 are moved to the moving trolley 1 by an electric motor 10 via a chain 8.
is moved directly below the holding device 2 and stopped, and the mounting table 1a is raised by the telescoping mechanism 11 to stop the article 4 at a position corresponding to the compression device 26. Therefore,
The compression device 26 is activated and the four pressing plates 27 are advanced by the piston rod 28 to compress and mold the article 4 from four directions to a predetermined position.
When the pressing plate 27 is advanced, the compression device 2
Activate the lifting prevention device 55 from the top of 6,
The lifting prevention presser plate 56 is lowered by the piston rod 58 and stopped at the position where the upper surface of the item 4 is pressed. Subsequently, the press plate 27 and the anti-lifting press plate 56 are simultaneously retreated to their original positions.

Next, the mounting table 1a is raised again to bring the item 4 into contact with the vacuum suction cup 14. From this state, the vacuum pump 16 is operated, the vacuum suction cup 14 reaches a predetermined vacuum pressure, and after the article is securely held, the mounting table 1a is lowered to its original position. After the mounting table 1a is lowered, the electric motor 10 is reversely rotated and the chain 8
The movable trolley 1 is retreated to its original position, that is, to a position adjacent to the extrusion device 40.

Next, the piston rod 22 of the box pallet lifting device is raised to raise the box pallet 18 via the lifting table 20, the item 4 held by the vacuum suction cup 14 is inserted into the box pallet 18, and it is stopped at a predetermined position. Then, the item 4 is removed from the vacuum suction cup 14. Subsequently, the box pallet 18 is lowered to its original position, that is, to a position where it does not interfere with the movement of the movable cart 1.

As described above, one level of items 4 is loaded into the box pallet 18, and this loading process is repeated to sequentially stack multiple levels of items 4. After a predetermined number of levels have been loaded, the lifting platform 20 is lowered to the lowest position and the box pallet is loaded. 18 is supported on a pallet conveyor 52 and transported out by a transport conveyor 54.

FIGS. 4a and 4b are perspective views showing an example of a loading pattern of articles by this apparatus, in which six articles 4 in one layer are stacked in five layers.

The device according to the present invention has the configuration described above.
Therefore, first, items can be automatically loaded onto pallets without relying on humans. Furthermore, this loading process can be repeated automatically to stack items in multiple stages. Next, during the loading process, the items are transported by a moving truck to a holding device and the pallet is raised to receive the held items. That is, the holding device is fixedly arranged.
Therefore, there is an advantage that there is no risk of the article falling from the holding device due to vibration or the like.

In addition, by providing a compression device that compresses and molds the items before holding them in the holding device and a device that prevents them from lifting up, the items can be loaded easily and without damage even on box pallets with little room. be able to.

Although the present invention is primarily a device for loading synthetic rubber bales onto box pallets, it can of course be used for items other than synthetic rubber bales or for ordinary pallets.

The present invention can be modified in various ways without departing from the gist thereof, and is not limited to what is shown in the examples. Furthermore, devices other than the gist of the present invention shown in the examples can of course be modified in various ways using known techniques.
And it may be provided as necessary.

[Brief explanation of the drawing]

Figures 1 to 3 are diagrams showing one embodiment of the present device, in which Figure 1 is a conceptual plan view, Figure 2 is a conceptual side view, Figure 3 is a conceptual perspective view, and Figures 4 a and b. Both are diagrams showing the loading pattern of articles by the present device. DESCRIPTION OF SYMBOLS 1...Moving trolley, 1a...Placement table, 2...Holding device, 3...Pallet lifting device, 4...Item, 1
4...Vacuum suction cup, 18...Pallet, 26...
Compression device, 55... lifting prevention device.

Claims (1)

[Scope of Claims] 1. A movable trolley having an article mounting table, a holding device for removably holding the articles on the movable trolley, and a compression molding device for compressing the articles on the movable trolley from the outside below the holding device. a lifting prevention device having a vertically movable holding plate for preventing an item from lifting up when compressing and forming an item on the upper part of the compression unit, and an item held by the above-mentioned holding device. a pallet lifting device that moves up and down a pallet storing the pallet, the holding device is fixedly disposed above the pallet lifting device, the moving cart is provided so as to be movable forward and backward below the holding device, and A pallet loading device characterized in that the above-mentioned mounting table is configured to be movable up and down. 2. The pallet loading device according to claim 1, wherein the holding device is a vacuum suction holding device comprising a plurality of vacuum suction cups. 3. A pallet loading device according to any one of claims 1 to 2, characterized in that the article is a synthetic rubber bale and the pallet is a box pallet.