JPS63160927A - Method and device for pallet loading of sacks filled with molten object - Google Patents

Abstract

PURPOSE:To stack on an outgoing pallet by means of effective patterning, by transferring filled sacks in the number of N whose heading has been changed, on a relay conveyor with less pieces in the number of N. CONSTITUTION:Filled sacks 11 in the number of N which are loaded on a cooling pallet 12 are transferred, as they are, on No.1 relay conveyor 5 and No.2 relay conveyor 6a in No.1 unloading position and No.2 unloading position. Filled sacks 11 in the number of N which are transferred on No.2 relay conveyor 6a are sent onto No.1 relay conveyor 5 in 7 pieces, less than N, while their heading is changed 90 deg., followed by patterning upon adding to filled sacks in the number of N which have already been transferred on this No.1 relay conveyor 5, to be stacked in stages on an outgoing pallet. Filled sacks 11 are transferred onto No.1 relay conveyor 5 and No.2 relay conveyor 6a with No.1 depalletizer 3 and No.2 depalletizer 4, respectively.

Description

Detailed Description of the Invention "Industrial Application Field" The present invention relates to a method for stacking bags filled with melted material such as asphalt emulsion, that is, melt-filled bags, on a pallet when storing or shipping them. Regarding the device.

``Prior art'' Asphalt latex is stored and shipped in paper bags.6 The paper bags are placed one by one into a metal transport can, and while stored in the can, are sent to an inflator (bag expansion device) by a conveyor. After being fed and forcibly expanded, it is conveyed to the lower part of the filling device by the same conveyor, and after being filled with a certain amount of high-temperature molten asphalt emulsion, it is sent to a sealing position and sealed by a sewing machine. The paper bags filled and sealed in this way are dumped into a predetermined number N by a dumping device.
The pieces (usually 4 (1) at a time) are transferred from the transport can onto a metal cooling pallet.The cooling pallets are then stacked by a pallet loader and sent to a cooling or storage area, where they are packed in paper bags. The asphalt emulsion is cooled, solidified, and stored.

In addition, when shipping the solidified asphalt packed in paper bags (hereinafter referred to as asphalt filling bags),
After the stacked cooling pallets are taken out from the cooling area or storage area by a pallet conveyor, the cooling pallets are unstacked by a pallet unloader, and the asphalt filling bags are unloaded from the cooling pallets by a depalletizer. For example, in the case of asphalt filling bags whose length and width are in a relationship of 2:1, six bags are combined as shown in Figure 4 (A) or (B), that is, four bags are arranged in parallel. Patterning is performed so that the two pieces are oriented in series in a direction perpendicular to this.

Then, use this as one stage and place the fifth one on another shipping pallet.
As shown in the figure, they are stacked in multiple stages with the patterning direction alternately reversed between odd-numbered stages and even-numbered stages (packed in a so-called interlock pattern), and shipped in this state by forklift or the like as needed.

Conventionally, in order to stack the asphalt filling bags unloaded from the cooling pallet in multiple tiers again on the shipping pallet,
It was done as follows.

In other words, the asphalt filling bags unloaded from the cooling pallet by the depalletizer are conveyed one by one on a roller conveyor, and the number is counted by a counter, and when changing direction for patterning, the conveyed asphalt filling bags are The vehicle collided with a turn grid or turn stone bar, and the reaction force caused the vehicle to change direction on the roller conveyor.

"The problem that the invention attempts to solve" As a result, there were the following drawbacks.

■ As the asphalt-filled bags were conveyed on a roller conveyor, they collided with turn grids or turn stompers to change direction, and the impact often caused the paper bags to tear, exposing the solidified asphalt, resulting in a decrease in the number of stitches on the counter. This caused malfunctions, and the direction change was not reliable.

■ Because the asphalt filling bags are conveyed one by one on a roller conveyor and then changed direction, it takes up a lot of work space to unload them from the cooling pallet, pattern them, and then stack them on the shipping conveyor again. It took a long time to process.

■ Work efficiency was improved because 4 (1!) asphalt filling bags were loaded in parallel on the cooling barrel 7) and then separated and transported one by one.

In view of these conventional drawbacks, the object of the present invention is to provide a method for stacking asphalt filling bags on shipping pallets by patterning them accurately, without damage, and in a small working space, for example, in an efficient manner. It is to do so.

"Means for Solving the Problems" In order to achieve such an object, the method of the present invention uses a predetermined number N of melt-filled bags mounted on a cooling pallet and transported by a pallet conveyor. is unloaded from the cooling pallet onto the first relay conveyor at the first unloading position, and similarly unloaded onto the second relay conveyor at the second unloading position.

Next, after turning the N melt filling bags transferred to this second relay conveyor by 90 degrees, the N melt filling bags whose direction has been turned are transferred to the above-mentioned Transfer onto the No. 1 relay conveyor. Then, the n melt filling bags that were transferred by changing the direction and the N melt filling bags that were unloaded from the cooling balent onto the first relay conveyor are transferred to the first relay conveyor. After being brought together and patterned while being conveyed on a relay conveyor, the patterned (N+n)f solid melt filling bags are stacked on a shipping pallet.

Further, the apparatus of the present invention for carrying out such a method comprises a predetermined number N
N melt filling bags are transferred from the cooling pallet loaded with N melt filling bags to the first
The first load is unloaded onto the first transfer conveyor at the unloading position of
a second depalletizer that also unloads N melt-filled bags onto a second relay conveyor at a second unloading position;
a conversion guide roller that changes the direction of the melt filling bags by 90 degrees; and an infeed conveyor that feeds the N melt filling bags whose direction has been changed by n units smaller than N onto the first relay conveyor. and a patterning device for aligning the N melt filling bags on the first relay conveyor and the n melt filling bags on the relay conveyor; It consists of a palletizer that stacks N+n) melt filling bags on a shipping pallet.

"Operation" According to the method of the present invention in which loading is carried out in accordance with the above-described procedure, the N melt filling bags loaded on the cooling pallet are placed at the first unloading position and the second unloading position. and the first
and the second relay conveyor, respectively. The N melt-filled bags transferred onto the second relay conveyor are not turned 90 degrees and are sent onto the first relay conveyor in increments of n less than N; For example, Fig. 4 (A)
Alternatively, after being patterned as shown in (B), they are stacked on a shipping pallet in multiple stages as shown in FIG. 5, for example.

Further, in the apparatus of the present invention, the cooling pallet is conveyed by a pallet conveyor, and the N melt filling bags on the cooling pallet are transferred by a first depalletizer onto a first relay conveyor and a second conveyor. are transferred onto the second relay conveyor by a depalletizer. This second
The N melt filling bags on the relay conveyor are turned one by one by 90 degrees by the conversion guide roller when being transferred to the infeed conveyor. Then, the infeed conveyor sends n pieces at a time onto the first relay conveyor. The n melt filling bags and the N melt filling bags that have already been transferred onto the first relay conveyor are aligned by a patterning device, and then placed on a shipping pallet by a palletizer. Can be stacked.

"Example" Next, an example of the present invention will be described in detail with reference to the drawings.

FIG. 1 is a plan view of the entire loading device of the present invention for loading asphalt packed into paper bags and already cooled and solidified (this is referred to as an asphalt filling bag as described above). This loading device can be roughly divided into pallet conveyors (
roller conveyor) 1, pallet unloader 2, and the first
and a second depalletizer 3.4, a first relay conveyor (roller conveyor) 5, a second relay conveyor (roller conveyor) 6a, and this second relay conveyor 6a.
Conveyor for conversion (roller conveyor) 6b that continues orthogonally to
, a conversion guide roller 7 disposed at the terminal end of the conversion conveyor 6b, an infeed conveyor (roller conveyor) 8 that continues orthogonally to the conversion conveyor 6b, a buttering device 9, and a palletizer 10. It is configured.

Metal cooling pallets 12 carrying four asphalt filling bags 11 in parallel are fed to the pallet unloader 2 by a pallet conveyor (roller conveyor) 1 while being stacked, for example, in four stages. The pallet unloader 2 has a known structure, in which four stacked cooling pallets 2 are lifted up by a lifter 2a, the second cooling pallet from the bottom is fixed with a clamp, and then the bottom cooling pallet is moved up the lifter 2a. It is lowered together with 2a and placed on the roller conveyors 13 on both sides. After this cooling pallet is sent from the roller conveyor 13 to the conveyor 14 of the first depalletizer 3, the lifter 2a is raised again, and the remaining three stages of cooling pallets are placed on the lifter 2a. After releasing the clamp, the second cooling pallet from the lowest stage is fixed with the clamp, and the lifter 2a is lowered to place only the lowest cooling pallet on the roller conveyor 13 on both sides. The operation of feeding the first depalletizer 3 onto the conveyor 14 is repeated.

The first and second depalletizers 3.4 have their conveyors 14 arranged in series along the conveyance direction (left side in FIG. 1) of the roller conveyors 13 on both sides of the pallet unloader 2, but substantially has the same configuration and is equipped with an oblong plate-shaped scraper 15 that is moved back and forth by a cylinder device (not shown), and this scraper 15 simultaneously pushes the four asphalt filling bags 11 on the cooling pallet mesh 2 to form the first relay. conveyor 5 or second relay conveyor 6
It is now reprinted in a. The cooling pallet 12 sent onto the conveyor 14 is positioned at a fixed position by a stopper (not shown).

The cooling pallet 12 transferred onto the conveyor 14 of the first depalletizer 3 as described above is transferred to the first relay conveyor with the asphalt filling bag 11 mounted thereon, or by the scraper 15 as described above. After being transferred to the second depalletizer 5 and emptied, it is further sent onto the conveyor 14 of the second depalletizer 4.

When the cooling pallet 12 is sent with the four asphalt filling bags 11 mounted thereon, the second depalletizer 4 moves the scraper 15 forward to remove the four asphalt filling bags 11 from the cooling pallet 12. After transferring the empty cooling pallet 2 onto the relay conveyor 6a of No. 2, the empty cooling pallet No. 2 is transferred to the No.
The cooling pallet 12 is discharged to the left in the figure, and when an empty cooling pallet 12 is sent by the first depalizer 3, it is discharged to the left as it is.

As described above, the cooling pallet 12 carrying the four asphalt filling bags 11 is stopped and positioned one by one on the conveyor 14 of the first depalletizer 3 or the second depalletizer 4, and the asphalt filling bags are stopped one by one by the stopper. However, the first depalletizer 3 and the second depalletizer 4 do not handle the same number of cooling pallets 12, but have a 2:1 relationship. That is, when the first depalletizer 3 lowers the asfult filling bag 11 twice, the second depalletizer 4 lowers it once.

The second relay conveyor 6a is installed parallel to the side of the conveyor 14 of the second depalletizer 4, and carries the four asphalt filling bags 11 lowered as described above by the scraper 15 of the second depalletizer 4. It is conveyed as it is to the conversion conveyor 6b side.

These second relay conveyor 6a and conversion conveyor 6b
On the surface, there is a transshipment lifting chain conveyor 16 that is raised and lowered to a higher and lower position than the conversion conveyor 6b.
is provided. When one asphalt filling bag 11 is conveyed thereon from the second medium 11 conveyor 6a, this reloading chain conveyor 16 conveys it a little in the same direction and then descends to fill the asphalt. The filling bags 11 are transferred one by one onto the conversion conveyor 6b.

The asphalt filling bags 11 transferred onto the conveyor for conversion 6h are conveyed by the conveyor for conversion 6b in a direction perpendicular to the second conveyor for relay 6a. Since the conversion guide roller 7 is arranged at the inner corner where the conversion conveyor 6b and the infeed conveyor 8 are perpendicular to each other, the asphalt filling bags 11 conveyed by the conversion conveyor 6b are transported by the conversion guide roller 7. When it comes into contact with 7, it is guided by this and transferred onto the infeed conveyor 8 while being turned 90 degrees.

The infeed conveyor 8 has a first half 81 and a second half 8.
2 and 2 are driven separately by motors. The asphalt filling bag 11 is redirected as described above and placed on the rear half 82 of the infeed conveyor 8 by 2 itA.
When transferred, the rear half 82 is driven and the two asphalt filling bags 11 are sent onto the front half 81. After this,
Two new asphalt filling bags 11 are placed on the rear half 82.
are transferred, and four asphalt filling bags 11 are arranged in series on the infeed conveyor 8.

When the front half 81 of the infeed conveyor 8 is driven,
The two asphalt filling bags 11 thereon are sent onto a patterning lifting chain conveyor 21 disposed midway through the first relay conveyor 5. This chain conveyor 21 is moved up and down by a cylinder device to a position higher and lower than the rollers of the first relay conveyor 5. This chain conveyor 21 is at a high position when the two asphalt filling bags 11 are sent by the front half 81 of the infeed conveyor 8, and since it is driven in synchronization with the front half 81, The asphalt filling bags 11 are transferred onto the chain conveyor 21 while being lined up in series. Thereafter, as the chain conveyor 21 descends, the two asphalt filling bags 11 are further transferred onto the first relay conveyor 5.

On the other hand, the four asphalt filling bags 11 that have been transferred from the first depalletizer 3 to the first relay conveyor 5 in parallel as described above are conveyed as they are by the relay conveyor 5; At this time, these four asphalt filling bags 11 are brought together by elastic guide plates 22 arranged on both sides of the relay conveyor 5,
Two asphalt filling bags 11 transferred from above the chain conveyor 21 and a patterning device 9 as shown below.
are combined as shown in FIG. 4(A) or (B).

That is, the patterning device 9 includes the guide plates 22 on both sides and the chain conveyor 2 as shown in FIGS. 1 and 3.
1, the terminal end of the first relay conveyor 5, and a scraper 24 moved by chains 23 on both sides. Then, this patterning device 9 first transports the four parallel asphalt filling bags 11 transferred from the first depalletizer 3 onto the first relay conveyor 5 to its terminal end by the relay conveyor 5. . after that,
The two asphalt filling bags 11 are transferred from the infeed conveyor 8 to the first asphalt filling bag 11 via the chain conveyor 21 as described above.
The two asphalt filling bags 11 in series are pushed by the scraper 24, brought together with the four parallel asphalt filling bags 11 conveyed to the end, and 4. The material is fed into the palletizer 10 while being patterned as shown in FIG. 4 (A). Alternatively, after transferring the 2 (hard asphalt filling bags 11) in series from the infeed conveyor 8, the four parallel asphalt filling bags 11 are conveyed by the relay conveyor 5 to fill two asphalt bags in series. The bag 11 is brought together and pushed by the scraper 24 as shown in Fig. 4 (
It is fed into the palletizer 10 while being patterned as shown in B).

The palletizer 10 includes a transfer plate 26 horizontally slidably mounted on rails 25 on both sides, a drive mechanism for sliding the transfer plate 26 along the rails 25, and a table lifter 27. There is. The transfer plate 26 is the first relay conveyor 5
The six asphalt filling bags 11, which have been pushed while being patterned by the scraper 24 as described above, are transferred as they are onto the transfer plate 26 located at the solid line position in Figure 3. be done. When the transfer is detected, the transfer plate 26 moves forward to above the table lifter 27 and then retreats. During the retreat, the six asphalt filling bags 11 on the transfer plate 26 are held in position on the table lifter 27 by a stopper, so that the wooden shipping pallet 28 that has been placed on the table lifter 27 in advance Reprinted above. After this, the table lifter 27
is lowered by a predetermined amount (one stage in terms of the number of loading stages of asphal filling bags 11).

While the six asphalt filling bags 11 are being patterned and loaded onto the shipping pallet 28 in this way, the two remaining asphalt filling bags 11 on the rear half 82 of the infeed conveyor 8 are being patterned and loaded onto the shipping pallet 28. , the chain conveyor 21 is driven by the rear part 82 and the front part 81.
Then, from the chain conveyor 21, it is further transferred onto the first relay conveyor 5 in the same manner as above.

On the other hand, the four asphalt filling bags 11 on the cooling pallet 12 newly sent to the first depalletizer 3 are placed on the first relay conveyor 5 while being arranged in parallel as above by the first depalletizer 3. The asphalt filling bags 11 and the scraper 24 arrange the asphalt filling bags 11 and 24 in series, and are brought together by the relay conveyor 5 and patterned.

The patterning is as shown in (B) when the previous pattern was 4th (A), and as shown in (A) when the previous pattern was (B). Then, the six asphalt filling bags 11 are transferred to the transfer plate 26 and stacked on the asphalt filling bags ll already loaded on the shipping pallet 28.

Similarly, four asphalt filling bags 11 are sent in parallel from the first relay conveyor 5, and asphalt filling bags 1 are sent from the infeed conveyor 8.
1 are sent in series two at a time, and the patterning shown in FIG. When the number of stages reaches a predetermined number, the table lifter 27 is lowered and the shipping pallet 28 is transferred onto the shipping conveyor 29 and shipped.

Note that the patterning of the asphalt filling bag 11 may be in a form other than the above. Furthermore, the present invention can also be applied to bags filled with and solidified with high-temperature melts other than asphalt emulsion.

"Effects of the Invention" As is clear from the above, according to the present invention,
For example, asphalt fill bags can be patterned and stacked on shipping pallets without damage, accurately, and in a space-saving and efficient manner.

[Brief explanation of the drawing]

Figure 1 is a plan view of the entire pallet loading device according to the present invention, Figures 2 and 3 are side views of parts thereof, and Figures 4 (A) and (B) are plan views of patterning examples. , FIG. 5 is a perspective view of an example of the packaging. 1... Pallet conveyor, 2... Pallet unloader, 3... First depalletizer,
4... Second depalletizer, 5... First relay conveyor, 6a... Second relay conveyor, 6b... Conversion conveyor. ,7...
...Conversion guide roller, 8...Infeed roller, 9...Patterning device f, 10...
... Palletizer, 11 ... Asphalt filling bag, 12 ... Cooling pallet, 28 ...
...Pallet for shipping. Figure 5

Claims (1)

[Claims] 1. A predetermined number N of melt-filled bags loaded on a cooling pallet and transported by a pallet conveyor are transferred from the cooling pallet to a first relay at a first unloading position. a first unloading process for unloading onto a second conveyor; a second unloading process for unloading onto a second relay conveyor at a second unloading position; a direction changing process of changing the direction of N melt filling bags by 90 degrees;
a transloading step of transferring the N melt filling bags whose direction has been changed onto the first relay conveyor in units of n pieces smaller than N; and n melt filling bags which have been transferred after changing their direction; A patterning process in which the N melt filling bags, which have been unloaded from the cooling pallet onto the first relay conveyor, are brought together while being conveyed on the first relay conveyor, and the patterned (N+
n) a loading step of stacking the melt-filled bags on a shipping pallet. 2. Unload the N melt filling bags onto the first relay conveyor at the first unloading position from the cooling pallet loaded with a predetermined number N melt filling bags and transported by the pallet conveyor. a first depalletizer, a second depalletizer which also unloads N melt-filled bags onto a second relay conveyor at a second unloading position; a conversion guide roller that changes the direction of the melt filling bag by 90 degrees, and an infeed conveyor that feeds the N melt filling bags whose direction has been changed by n units smaller than N onto the first relay conveyor; a patterning device for aligning the N melt filling bags on the first relay conveyor and the n melt filling bags on the relay conveyor;
1. A pallet loading device for melt filling bags, comprising: a palletizer for stacking 4+n) melt filling bags on a shipping pallet.