JP5874270B2 - Packing pattern creation method, creation program, and stacking apparatus - Google Patents

Description

  The present invention relates to a stacking pattern creation method, a creation program, and a stacking apparatus technique that can form a unit load with high loading efficiency.

Conventionally, when a plurality of boxes are stacked on a pallet to form one transport unit (hereinafter referred to as a unit load), and each box is transported in units of pallets, the arrangement of the boxes in the unit load It is known that there is a difference in the transportation efficiency and the stability of the package during transportation depending on how (hereinafter referred to as the loading pattern).
For this reason, various techniques for creating an optimal stacking pattern when forming a unit load have been studied. For example, the technique is disclosed in Patent Document 1 shown below and is publicly known.

In the prior art disclosed in Patent Document 1, when a plurality of types of boxes having different dimensions are included in a box to be transported, an area on the pallet is divided into four quadrants based on the center position of the pallet. In each quadrant, a palletizing device configured to stack boxes is disclosed.
In the palletizing apparatus, the number of boxes used for configuring the unit load is determined in advance, and the predetermined number of boxes is combined to reduce the difference in height of the stacking height in each quadrant. In this way, the loading pattern in the unit load is determined.

JP-A-6-271073

  However, in the stacking method employed in the palletizing apparatus according to Patent Document 1, the pallet is divided into four quadrants, and the number of boxes to be combined is determined in advance to create a stacking pattern. Therefore, the number of stacking patterns to be generated is limited, and it has not been a method for creating a truly optimal stacking pattern.

  The present invention has been made in view of such a current problem, and in the case where a plurality of types of boxes having different dimensions are mixed, a packing pattern creation method capable of creating an optimal packing pattern And to provide a program and a loading device.

  The problem to be solved by the present invention is as described above. Next, means for solving the problem will be described.

  That is, in claim 1, in a method of creating a stacking pattern using a stacking device for creating a stacking pattern in the case of stacking a plurality of boxes having a plurality of different sizes on a pallet. Then, based on the information relating to the dimensions of the box in a side view, the stacking height when one or a plurality of boxes are stacked, and other types When the stacked height when one or a plurality of boxes are stacked coincides with each other, a first step of grouping each type of box as the same group, and the first step by the calculation means Among the groups consisting of multiple types of boxes grouped in the same group, the stacked height of the boxes exceeds the upper limit of the stacked height The box is present in at least the four corners of the pallet while the boxes included in each group extracted in the second step are stacked in a columnar shape by the second step of extracting a large group and the computing means. The third step of creating a column arrangement pattern that is a pattern arranged as described above, and the calculation means grouped into the same group as each box used in the creation of the column arrangement pattern of the third step, A planar arrangement pattern that is a pattern that arranges the remaining boxes that were not used in the creation of the column arrangement pattern in the third step at positions that fill the gaps between the boxes in the column arrangement pattern. The fourth step to be created and the calculation means are stacked on the columnar portions constituting the four corners of the planar arrangement pattern created in the fourth step. After stacking the boxes that should be used at a height that does not exceed the upper limit of the height, or after stacking up to the upper limit that does not exceed the upper limit of the stacking height, in parts other than the columnar part, Fifth to create a stacking pattern that stacks boxes that should not be used at a height that does not exceed the upper limit of the stacking height, or that has been stacked up to an upper limit that does not exceed the upper limit of the stacking height. Of the stacking patterns created in the fifth step by the process and the computing means, the number of boxes stacked is equal to or greater than the number of boxes to be stacked, and the number of pallets is more And a sixth step of extracting a stacking pattern that can be reduced.

  In Claim 2, the stabilization pattern which is the pattern stabilized by filling the clearance gap which exists between each box which comprises the said plane arrangement pattern created in the said 4th process by the said calculating means is provided. It has the 7th process to create.

  In claim 3, further, by the calculation means, based on information relating to the size of the box in plan view, a dimension obtained by multiplying the width of any type of box by an integer or a dimension obtained by multiplying the depth of the box by an integer And the dimension obtained by multiplying the width of another type of box by an integer or the dimension obtained by multiplying the depth of the box by an integer, the eighth step of grouping these types of boxes as the same group In the fifth step, each box constituting the stacking pattern is replaced with another type of box grouped in the same group in the eighth step. A stacking pattern made of different types of boxes having the same shape in plan view is created.

  In claim 4, when there is a step between the columnar part and the other part in the stacking pattern created by the computing means, a ninth step of placing an empty box at the step is provided. It is what you have.

According to a fifth aspect of the present invention, there is provided a stacking pattern creation program mounted on a stacking apparatus for creating a stacking pattern when a plurality of boxes having a plurality of types having different sizes are stacked on a pallet. Based on the information on the dimensions of the box in side view, the stacking height when one or more boxes of any kind are stacked, and when one or more boxes of other types are stacked When the stacked heights coincide with each other, a first process for grouping each type of box as the same group, and a group consisting of a plurality of types of boxes grouped in the same group in the first process among these, are extracted and a second process of extracting a group not exceeding the upper limit of the stacking height stowage height of the box body, in the second process In the third process, a third process for creating a column arrangement pattern, which is a pattern in which each box included in each group is stacked in a columnar shape so that boxes are present at least at the four corners of the pallet; The remaining boxes that were grouped in the same group as the boxes used in the creation of the column arrangement pattern and that were not used in the creation of the column arrangement pattern in the third process are the boxes in the column arrangement pattern. A fourth process for creating a planar arrangement pattern, which is a pattern to be arranged at a position to fill a gap existing between the bodies, and columnar portions constituting the four corners of the planar arrangement pattern created in the fourth process Stack the boxes that should be used at a height that does not exceed the upper limit of the stacking height, or the upper limit that does not exceed the upper limit of the stacking height After stacking, the boxes that should be used at a height that does not exceed the upper limit of the stacking height, or the upper limit that does not exceed the upper limit of the stacking height, should be stacked on a portion other than the columnar portion. The fifth process for creating a stacking pattern stacked up to the height of the above and the stacking pattern created in the fifth process, the number of stacked boxes is greater than the number of boxes to be stacked In addition, a sixth process for extracting a stacking pattern that requires a smaller number of pallets is executed by the stacking apparatus.

  In the present invention, a stabilization pattern that is a pattern that is stabilized by closing gaps existing between the boxes constituting the planar arrangement pattern created in the fourth process is created. Seven processes are performed by the stacking apparatus.

In claim 7, further, based on information relating to the dimensions of the box in plan view, a dimension obtained by multiplying the width of any kind of box by an integer or a dimension obtained by multiplying the depth of the box by an integer, and other types When the dimension obtained by multiplying the width of the box body by an integral number or the dimension obtained by multiplying the depth of the box body by an integer number is the same, the eighth process of grouping these types of boxes as the same group is performed, In the fifth process, each box constituting the stacking pattern is replaced with another type of box grouped in the same group in the eighth process to have the same shape in plan view. The process of creating a stacking pattern consisting of different types of boxes
It is executed by the stacking device.

  In claim 8, in the created stacking pattern, when there is a step between the columnar part and the other part, the ninth process of arranging a box that is an empty box at the step is performed by the ninth process. It is executed by the attaching device.

In Claim 9, It is a stacking apparatus for creating the stacking pattern used when stacking a plurality of boxes having different types of dimensions on a pallet, and calculates the stacking pattern. For calculating the stacking height when one or a plurality of boxes of any kind are stacked based on the information relating to the dimensions of the box in a side view, and other types of boxes. When the stacked heights when one or more bodies are stacked coincide with each other, they are grouped into the same group in the first process for grouping these types of boxes as the same group. It was among a plurality of types of groups of the box body, and a second process of extracting a group not exceeding the upper limit of the stacking height stowage height of the box body, before A third process for creating a column arrangement pattern, which is a pattern in which the boxes included in each group extracted in the second process are stacked in a column shape so that the boxes are present at least at the four corners of the pallet. And the remaining boxes that were grouped into the same group as the boxes used in the creation of the column arrangement pattern in the third process and were not used in the creation of the column arrangement pattern in the third process. A fourth process of creating a planar arrangement pattern that is a pattern that is arranged at a position that fills a gap existing between the boxes in the pillar arrangement pattern, and the planar arrangement pattern created in the fourth process Stack the boxes that should be used at the height that does not exceed the upper limit of the stacking height in the columnar parts that constitute the four corners, or the upper limit of the stacking height After stacking up to an upper limit that does not exceed the upper limit, stack the box to be used at a height that does not exceed the upper limit of the stacking height on the portion other than the columnar portion, or The fifth processing for creating a stacking pattern that is stacked up to the maximum height that does not exceed the upper limit value, and among the stacking patterns created in the fifth processing, the number of boxes that have been stacked should be stacked A stacking pattern creating program for executing a sixth process of extracting a stacking pattern that is equal to or larger than the number of boxes and requires a smaller number of pallets;

  According to a tenth aspect of the present invention, the stacking pattern creation program is a pattern that is further stabilized by filling gaps that exist between the boxes constituting the planar arrangement pattern created in the fourth process. A seventh process for creating a certain stabilization pattern is executed.

  12. The stacking pattern creation program according to claim 11, further comprising an integer multiple of a width of an arbitrary type of box or an integer of a box depth based on information relating to the dimensions of the box in plan view. When the doubled dimensions and the dimensions obtained by multiplying the widths of other types of boxes by an integral multiple or the dimensions of the box by an integral multiple are the same, grouping these types of boxes as the same group. In the fifth process, each box constituting the stacking pattern is replaced with another type of box grouped in the same group in the eighth process. The processing for creating a stacking pattern made of different types of boxes having the same shape in plan view is executed.

  In the twelfth aspect, the stacking pattern creation program further arranges a box as an empty box at the step when there is a step between the columnar portion and the other portion in the created stacking pattern. The ninth process is executed.

  As effects of the present invention, the following effects can be obtained.

  In claim 1, an optimum stacking pattern can be created.

  In claim 2, an optimum stacking pattern can be created.

  In Claim 3, a more optimal stacking pattern can be created.

  According to the fourth aspect of the present invention, it is possible to create a more optimal stacking pattern that is less likely to cause load collapse.

  In claim 5, an optimum stacking pattern can be created.

  In claim 6, an optimum stacking pattern can be created.

  In claim 7, a more optimal stacking pattern can be created.

  In claim 8, it is possible to create a more optimal stacking pattern that is less likely to cause collapse.

  In claim 9, an optimum stacking pattern can be created.

  In claim 10, an optimum stacking pattern can be created.

  In claim 11, a more optimal stacking pattern can be created.

  According to the twelfth aspect of the present invention, it is possible to create a more optimal stacking pattern that is less likely to collapse.

The flowchart which shows the creation method of the packing pattern which concerns on one Embodiment of this invention. The schematic diagram which shows the stacking apparatus which concerns on one Embodiment of this invention. The flowchart which shows the detailed flow of the stacking pattern calculation (STEP-200) in the preparation method of the stacking pattern which concerns on one Embodiment of this invention. The flowchart which shows the detailed flow of the data pre-processing (STEP-210) in stacking pattern calculation (STEP-200). The schematic diagram for demonstrating stacked group creation processing (STEP-211), (a) The schematic diagram which shows the condition which grouped several types of boxes, (b) The schematic diagram which shows the view of grouping. The schematic diagram for demonstrating height matching group creation processing (STEP-212), (a) The schematic diagram which shows multiple types of boxes, (b) The schematic diagram which shows the condition of grouping. The schematic diagram for demonstrating a long thing size conversion process (STEP-213). The flowchart which shows the detailed flow of the stacking pattern creation process (STEP-220) in stacking pattern calculation (STEP-200). Schematic diagram for explaining the column combination pattern enumeration process (STEP-221), (a) a diagram illustrating types of boxes, (b) each grouped in the height matching group creation process (STEP-212) Schematic diagram showing a first embodiment of a box, (c) Schematic diagram showing a second embodiment of each box that is also grouped, (c) Third embodiment of each box that is also grouped FIG. The schematic diagram for demonstrating column arrangement | positioning pattern enumeration processing (STEP-222). The schematic diagram for demonstrating a plane arrangement | positioning pattern enumeration process (STEP-223). The schematic diagram for demonstrating gap filling processing (STEP-224). The schematic diagram for demonstrating a stacking pattern enumeration process (STEP-225). The schematic diagram for demonstrating a stacking process (STEP-226). The schematic diagram for demonstrating an empty box complementation process (STEP-227). The flowchart which shows the detailed flow (When special box stacking pattern creation processing (STEP-215) is performed) of the packing pattern calculation (STEP-200) in the creation method of the stacking pattern which concerns on one Embodiment of this invention. .

Next, embodiments of the invention will be described.
First, an overall flow in a method for creating a stacking pattern according to an embodiment of the present invention will be described with reference to FIGS. 1 and 2.
A method for creating a stacking pattern according to an embodiment of the present invention is, for example, a program for executing the creating method on a stacking apparatus 10 that is a device for examining a stacking pattern as shown in FIG. By mounting the (stacking pattern creation program), it can be realized by the stacking apparatus 10.
For this reason, below, the case where the creation method of the stacking pattern which concerns on one Embodiment of this invention according to one Embodiment of this invention is implemented according to the stacking pattern creation program mounted in the said stacking device 10 is used. An example will be described.
In the present embodiment, a case where a general-purpose personal computer is employed as the stacking device 10 is illustrated, but a dedicated product for creating an assembly pattern can also be employed.

  When creating a stacking pattern using a stacking apparatus in which a program for executing a stacking pattern creation method according to an embodiment of the present invention is installed, first, as shown in FIG. The data input (STEP-100) is performed on the stacking device 10.

In the data input (STEP-100), each piece of information necessary for creating a stacking pattern is input to the stacking apparatus 10 using the input means 10c.
The information to be entered here is the specifications of the box to be stacked (whether corrugated cardboard box or plastic box), the box dimension information (width, depth, height), the quantity of each box, and the pallet dimension information. There is an upper limit of the stacking height, etc.
And each input information is memorize | stored in the memory | storage means 10b with which the stacking apparatus 10 is provided.

In the present invention, a box which is an object for creating a stacking pattern has a substantially rectangular parallelepiped shape (including a substantially cubic shape), and is a container for storing and transporting products and the like therein.
The box to which the present invention is applied is, for example, a five-sided box made of resin or the like that is used exclusively for transportation (the upper surface is open), and a rising portion that engages with the open portion of the upper surface on the lower surface Can be adopted, and a box such as a paper six-sided box (so-called cardboard box) generally used widely can be adopted.

In creating a stacking pattern by the stacking device, a stacking pattern calculation (STEP-200) is executed next.
The stacking pattern calculation (STEP-200) is input at the data input (STEP-100) and based on each information stored in the storage means 10b, the calculation device 10a included in the stacking device 10 uses the calculation device 10a. In accordance with the program implemented in (2), an arithmetic process for creating a stacking pattern is executed.

Then, in the creation of the stacking pattern by the stacking device, the stacking pattern output (STEP-300) is finally performed.
In the stacking pattern output (STEP-300), by displaying the stacking pattern created by the stacking pattern calculation (STEP-200) on the output means 10d such as a display provided in the stacking apparatus 10, an operator or the like Can be presented.
Then, the worker can examine the number of boxes necessary for transportation and the number of necessary vehicles using the presented stacking pattern.

Next, the stacking pattern calculation (STEP-200) will be described in more detail with reference to FIGS.
As shown in FIG. 3, the stacking pattern calculation (STEP-200) is configured by a plurality of processes (STEP-210) to (STEP-230).

In the stacking pattern calculation (STEP-200), first, the data preprocessing (STEP-210) of each data input in the data input (STEP-100) is executed by the arithmetic unit 10a.
Further, as shown in FIG. 4, this data pre-processing (STEP-210) includes a stacked group creation process (STEP-211), a height matching group creation process (STEP-212), and a long object size conversion process (STEP-213). ) And the like.

  The stacking group creation process (STEP-211) shown in FIG. 4 is a process executed to group boxes suitable for stacking, and is input in the data input (STEP-100) by the arithmetic unit 10a. Further, different types of boxes are grouped on the basis of dimensional information (that is, the width and depth of the box) of each box in plan view.

Specifically, a case where a plurality of types of box bodies 1... (Having a total of six types of box bodies 1a to 1f) having dimensions in plan view as shown in FIG. And explain.
Each dimension in the plan view of each box 1a to 1f is assumed to be the dimension described in FIG. In addition, the unit of each dimension in Fig.5 (a) is set to mm.

In the stack group creation process (STEP-211), the arithmetic unit 10a first multiplies the lengths of the sides of the boxes 1a, 1b, 1c, 1d, 1e, and 1f by an integer (an integer of 1 or more).
Then, each dimension multiplied by the integer is compared by the arithmetic unit 10a, and if there are those whose dimensions match, the boxes 1 and 1 having the same dimensions are set as the same group. I am doing so.
Even if the dimensions multiplied by an integer match, if the matching dimensions exceed the size of the pallet, they are not judged to match.

More specifically, in each box 1a to 1f shown in FIG. 5 (a), as shown in FIG. 5 (b), for example, the box 1a and the box 1b are formed on each side of the box 1a. Since the length and the length of the short side of the box 1b are both equal to 335 mm, the calculation unit 10a sets the box 1a and the box 1b to belong to the same group (referred to as group (1)). The
In addition, the box 1a and the box 1d have the same size as the length of each side of the box 1a doubled and the length of the long side of the box 1d is 670 mm. The box 1a and the box 1d are set to belong to the same group.
Here, since 670 mm is twice 335 mm, the box 1d is also set as belonging to the group (1) by the arithmetic device 10a.
Further, the box 1c and the box 1e are set as belonging to another same group (referred to as group (2)) by the arithmetic device 10a, and the box 1d and the box 1f are further different from each other. It is set as belonging to a group (referred to as group (3)).

In addition, not only when the dimensions multiplied by an integer match completely, but also set a tolerance for dimensional difference, and if the dimensional difference is less than or equal to the set tolerance, it is judged that the dimensions match. I have to.
For example, when the allowable value of the dimensional difference is set to 5 mm, as shown in FIG. 5B, the arithmetic unit 10a uses the arithmetic unit 10a to obtain a dimension (1005 mm) obtained by triple the length of the short side of the box 1b, and the box 1c. It is determined that the dimension (1006 mm) obtained by doubling the length of the short side is equal, and the box 1d is set as belonging to the group (1).

  Then, finally, each box body 1... Shown in FIG. 5A is obtained by executing the stacking group creation process (STEP-211) by the arithmetic unit 10a as shown in FIG. Each box 1a, 1b, 1c, 1d belongs to the group (1), the box 1c and the box 1e belong to the group (2), and the box 1d and the box 1f belong to the group (3). It is set as belonging to.

  By grouping the boxes 1... By the stacking group creation process (STEP-211), it is not necessary to consider the stacking of boxes 1 and 1 with different groups. Calculation (STEP-200) can be further accelerated.

  The height matching group creation process (STEP-212) shown in FIG. 4 is a process executed to group the boxes 1... 1 suitable for aligning the stacked heights. Based on the dimensional information (height dimension) in the side view of each box body 1 ···· input in the data input (STEP-100) by the device 10a, the boxes 1 ····· are grouped. It is to become.

Here, the case where there are a plurality of types (here, four types) of box bodies 1p to 1s given height dimensions as shown in FIG.
In addition, each box 1p-1s shown here is a 5-sided box-shaped box, and shall have a rising part with a height of 10 mm on the lower surface.

And in the calculation of the stacked height, the type of box (cardboard box or box dedicated to transportation) is considered, for example, in the box only for transportation in the form having a rising part on the lower surface, Only the lowermost box is added with the height of the rising portion to calculate the stacked height.
Specifically, when the overall height of the box 1 is h and the height of the rising portion is t, the stacked height H when n boxes are stacked is expressed by the following Equation 1. I am trying to calculate.

  As shown in FIG. 6B, the box body 1p and the box body 1q have different dimensions (width and depth) in plan view, but the height dimensions are all equal to 103 mm. 10a are set as belonging to the same group.

  Further, the box 1r alone is not found to match the height dimension, and is thus set by the arithmetic unit 10a as belonging to a single group.

  Further, not only when the dimensions are completely matched, an allowable value of the difference is set, and if the size difference is equal to or less than the set allowable value, it is determined that the dimensions match.

For example, the height of the box 1s is 195 mm, and the stacking height of two stacked boxes 1p is 196 mm according to Equation 1.
For example, if the allowable value of the dimensional difference is set to 5 mm, the two stacked boxes 1s and 1p are determined to have the same height by the arithmetic unit 10a. Are set as belonging to the same group.

  Further, similarly, the height (288 mm) in which two box bodies 1r are stacked, the height (289 mm) in which three box bodies 1p are stacked, and the height (288 mm) in which box bodies 1p and 1s are stacked. Are determined to belong to the same group because the arithmetic device 10a determines that the heights match.

  .. Which are suitable for matching the height when stacked by grouping the boxes 1... By the height matching group creation processing (STEP-212). Since it becomes possible to create a stacking pattern while selectively combining-, the stacking pattern calculation (STEP-200) can be further speeded up.

  The long object size conversion process (STEP-213) shown in FIG. 4 is performed when the width or depth of the box 1 is larger than that of the pallet 2.

  Specifically, in the case where there is a box 1 having a width dimension W1 as shown in FIG. 7, the portion protruding when the box 1 is stacked on the pallet 2 is not considered in the calculation. The processing device 10a performs processing for converting the size of the box 1 from W1 to W2 (width of the pallet 2).

  By performing the long object size conversion process (STEP-213), it is possible to exclude a stacking pattern in which the box body 1 is arranged at a position protruding from the pallet 2 from the examination target. The package form can be stabilized and the stacking pattern calculation (STEP-200) can be further speeded up.

  In the stacking pattern calculation (STEP-200), next, a stacking pattern creation process (STEP-220) is executed based on each data generated and converted by the data preprocessing (STEP-210).

As shown in FIG. 8, the stacking pattern creation process (STEP-220) includes (STEP-221) to (STEP-227).
In the present embodiment, a description will be given by exemplifying a procedure for creating a unit load (called a column stacking unit load) in which the columns are stacked.

In the stacking pattern creation process (STEP-220), first, a column combination pattern listing process (STEP-221) is executed.
In the column combination pattern enumeration process (STEP-221), each box set as corresponding to the same group in the height matching group creation process (STEP-212) in the data pre-processing (STEP-210) by the arithmetic unit 10a A group that can be used as a pillar is extracted as a pillar combination pattern 3 from the bodies 1, 1.

Here, as shown in FIG. 9A, the extraction situation of the column combination pattern 3 in the case where there are types of the boxes 1x, 1y, and 1z whose heights are 100 mm, 130 mm, and 150 mm is illustrated.
For example, as shown in FIG. 9B, the heights of the three stacked boxes 1x and the two stacked boxes 1z are 300 mm, which coincide with each other. Therefore, the height matching group creation process (STEP- 212), it is assumed that the same group is set.
Further, as shown in FIG. 9 (c), the height of 13 stacked boxes 1x and 10 stacked boxes 1y coincide with each other at 1300 mm. Therefore, the height matching group creation process (STEP- 212), it is assumed that the same group is set.
Furthermore, as shown in FIG. 9 (d), the heights of 15 boxes 1y stacked and 13 boxes 1z stacked 1950mm each coincide with each other, so the height matching group creation process (STEP- 212), it is assumed that the same group is set.

And the combination which exceeds the upper limit of unit load height is excluded from each group combined as a thing with the same stacking height in this way.
Here, the upper limit value of the unit load height is set to 1000 mm, and the combination of the box 1x and the box 1y and the combination of the box 1y and the box 1z whose stacked height exceeds 1000 mm are excluded. .
9A to 9D, the combination of the box 1x and the box 1z is finally extracted as the column combination pattern 3 by the arithmetic unit 10a.

In the stacking pattern creation process (STEP-220), next, a column arrangement pattern enumeration process (STEP-222) is executed.
In the column arrangement pattern enumeration process (STEP-222), as shown in FIG. 10, the boxes 1, 1... That can form columnar portions (hereinafter referred to as columnar portions) at the four corners of the pallet 2. The column arrangement patterns 4.4,... As arrangement patterns are listed.

Here, when there are n types of boxes 1, 1..., The total number of combination patterns in which the boxes 1, 1... Are arranged at the four corners (r = 4) of the pallet 2 is n types. Can be considered as the number of combination patterns when four types of boxes 1... Are selected by allowing duplication from the boxes 1. can be calculated by the equation _{(n H r = (n +} r-1)! / r! (n-1)!) for determining the number of patterns.

For example, assuming that there are 10 types of boxes 1..., The total number of combination patterns in which the boxes 1. 10 and r = 4, _n H _r = 714, and it can be seen that there are 714 combination patterns.

  Further, in each combination pattern, if each box body 1, 1... At the four corners is rotated vertically or horizontally, it becomes another combination pattern, so there can be a maximum of 2 ^ 4 = 16 patterns. There are a maximum of 714 × 16 = 1424 patterns 4.

For example, as shown in FIG. 10, one box 1 can cover two of the four corners of the pallet 2, and the box 1 (box C shown in FIG. 10) or a square in plan view. Therefore, there may be a box 1 (box A shown in FIG. 10) or the like in which the column arrangement pattern 4 does not change even if it is rotated vertically or horizontally.
When the box 1 having such an aspect exists, even if it is assumed that there are 10 types of the boxes 1... The number of column arrangement patterns 4 is smaller than that.
In the column pattern enumeration process (STEP-222), all the column arrangement patterns 4, 4,... Are enumerated by the arithmetic device 10a.

  Further, in the method for creating a stacking pattern according to an embodiment of the present invention, as shown in FIG. 10, the box body 1 is allowed to be arranged away from the four corners of the pallet 2. Even in such an arrangement, if the distance between the corners of the box 1 and the pallet 2 is less than the allowable value, the box 1 is handled as being arranged at the four corners of the pallet 2.

In the stacking pattern creation process (STEP-220), next, a planar arrangement pattern listing process (STEP-223) is executed.
In the plane arrangement pattern enumeration process (STEP-223), as shown in FIG. 11, in the column arrangement pattern 4 enumerated in the column arrangement pattern enumeration process (STEP-222), it exists in each box 1. The remaining boxes 1, 1... That do not constitute columnar portions are arranged in the gaps to generate the plane arrangement patterns 5, 5.

In the stacking pattern creation process (STEP-220), next, a gap filling process (STEP-224) is executed.
In the gap filling process (STEP-224), as shown in FIG. 12, in each plane arrangement pattern 5 · 5 ··· generated in the plane arrangement pattern listing process (STEP-223), each box 1 ····· .. Are adjusted so as to close the gaps between them, and stabilized patterns 6, 6,..., Which are stabilized planar arrangement patterns 5, are generated.

  That is, the method for creating a stacking pattern according to an embodiment of the present invention is a method of creating each box 1. 1 constituting the plane arrangement pattern 5 created in the plane arrangement pattern listing process (STEP-223) by the arithmetic device 10a. ... the gap filling process (STEP-224), which is the eighth step of creating a stabilized pattern 6 which is a pattern stabilized by filling gaps existing between.

  Further, the stacking pattern creation program according to an embodiment of the present invention further includes each box body 1... Constituting the planar layout pattern 5 created in the planar layout pattern listing process (STEP-223). The stacking apparatus 10 executes a gap filling process (STEP-224), which is an eighth process for creating a stabilized pattern 6 which is a pattern stabilized by filling gaps existing between the two.

  Furthermore, in the stacking apparatus 10 according to the embodiment of the present invention, the stacking pattern creation program further includes each box 1 constituting the planar layout pattern 5 created in the planar layout pattern listing process (STEP-223). The stacking apparatus 10 executes the gap filling process (STEP-224), which is the eighth process for creating the stabilization pattern 6 which is a pattern stabilized by filling the gaps existing between 1... Is.

  With such a configuration, an optimum stacking pattern 8 can be created.

In the stacking pattern creation process (STEP-220), a stacking pattern enumeration process (STEP-225) is executed next.
In the stacking pattern enumeration process (STEP-225), as shown in FIG. 13 (a), in consideration of the size of the box 1 in plan view, a stack that is a combination of the boxes 1 that can be stacked on it. Pattern 7 is listed.

Further, in the stacking pattern enumeration process (STEP-225), stacking can be permitted even when the upper box 1 is larger than the lower box 1.
Specifically, for example, when the box body D is larger than the box body B, an allowable value α is set for the dimensional difference.
And as shown in FIG.13 (b), when the dimension difference (beta) of the box D and the box B is below the tolerance value (alpha), arrangement | positioning which mounts the box D on the box B is shown. Is allowed.
Then, in the stacking pattern enumeration process (STEP-225), the stacking pattern 7 in which the box D is arranged on the box B is included and listed.

In the stacking pattern creation process (STEP-220), next, a stacking process (STEP-226) is executed.
In the stacking process (STEP-226), as shown in FIG. 14 (a), the stabilization pattern 6 is first selected, and the box body 1... Stack 1 · 1 ···.

  At this time, the stacking pattern 7 enumerated in the stacking pattern enumeration process (STEP-225) is used so that the heights of the respective columnar portions are uniform and do not exceed the unit load height limit Hmax. Then, the boxes 1... Are stacked on the columnar part.

And, for example, in the stage of stacking the boxes 1... On the columnar part, when all the boxes 1. 226) ends.
Alternatively, even if the box bodies 1, 1,... Are arranged at the maximum in the columnar part, if the box bodies 1, 1... To be arranged still remain, then, as shown in FIG. The boxes 1, 1,... Are arranged in a region other than the columnar part within a range not exceeding the unit load height limit.

  In this way, in the stacking process (STEP-226), the stacking pattern 8 is created by virtually stacking the boxes 1.

  Further, in the stacking process (STEP-226), the stacking pattern 8 created and the information of each box 1... Grouped in the stacking group creation process (STEP-211) are stacked. .., Constituting the attachment pattern 8 are replaced with combinations of different boxes 1... I have to.

  That is, in the stacking pattern creation method according to the embodiment of the present invention, the boxes 10, 1... Constituting the stacking pattern 8 are processed by the arithmetic unit 10 a in the stacking process (STEP-226). In the stacked group creation process (STEP-211), it is replaced with other types of boxes 1, 1... Grouped into the same group, and has different types of boxes having the same shape in plan view. The stacking patterns 8 are listed.

  In addition, the stacking pattern creation program according to the embodiment of the present invention further includes a stacking group (STEP-226) in which each box 1. In the creation process (STEP-211), a stacking pattern composed of different types of boxes having the same shape in a plan view is replaced with other types of boxes 1, 1... Grouped in the same group. 8 is executed by the stacking apparatus 10.

  Furthermore, in the stacking apparatus 10 according to the embodiment of the present invention, the stacking pattern creation program further includes the boxes 1, 1,... Constituting the stacking pattern 8 in the stacking process (STEP-226). Are replaced with other types of boxes 1, 1... Grouped in the same group in the stacked group creation process (STEP-211), and different types of boxes having the same shape in plan view The process which produces the stacking pattern 8 which consists of this is performed.

  With such a configuration, a more optimal stacking pattern 8 can be created.

In the stacking pattern creation process (STEP-220), a stacking pattern extraction process (STEP-227) is then executed.
In the stacking pattern extraction process (STEP-227), the stacking pattern 8 suitable for the stacking condition is extracted from each of the stacking patterns 8, 8... Created in the stacking process (STEP-226). Perform the process.

  Specifically, in the stacking pattern extraction process (STEP-227), each type of box 1... Is selected from the stacking patterns 8... Created in the stacking process (STEP-226). 1... (For example, box bodies 1a to 1f, etc., see FIG. 5 (a)) is configured using box bodies 1... The stacking pattern 8 (which requires a small number of unit loads) is extracted by the arithmetic unit 10a.

  That is, in the method for creating a stacking pattern according to an embodiment of the present invention, a stacking pattern in the case of stacking a plurality of boxes 1,. A method for creating a stacking pattern 8 using the stacking device 10 for creating an arbitrary type of information based on information relating to the dimensions of the box in a plan view by an arithmetic device 10a included in the stacking device 10 The dimension of the box body 1 · 1... Multiplied by an integer multiple or the depth of the box body 1 multiplied by an integer, and the width of another type of box body 1 multiplied by an integer or the depth of the box body 1 When the dimensions multiplied by an integer match, a stacking group creating process (STEP-211) which is a first step of grouping these types of boxes 1... 10a, based on the information relating to the dimensions of the box 1 in a side view, the stacked height when one or more arbitrary types of boxes 1 are stacked, and one or more other types of boxes 1 A height matching group creation process (STEP-212) as a second step of grouping the respective types of boxes 1 and 1 as the same group when the stacked heights coincide with each other, and an arithmetic unit 10a, a group that does not exceed the upper limit of the stacking height among the groups of a plurality of types of boxes 1, 1,... Grouped in the same group in the height matching group creation process (STEP-212) Column combination pattern enumeration processing (STEP-221), which is the third step of extracting the column, and the arithmetic unit 10a This is a pattern in which the boxes 1, 1... Included in each group extracted in (STEP-221) are arranged in a columnar shape so that the boxes 1 exist at least at the four corners of the pallet 2. The column arrangement pattern enumeration process (STEP-222), which is the fourth step of creating the column arrangement pattern 4, and the calculation device 10a were used in the creation of the column arrangement pattern 4 in the column arrangement pattern enumeration process (STEP-222). The remaining boxes 1... 1 that are grouped into the same group as the boxes 1, 1... And are not used in creating the column arrangement pattern 4 in the column arrangement pattern enumeration process (STEP-222). Is created in the column arrangement pattern 4 in a plane arrangement pattern 5 which is a pattern for arranging the gaps between the boxes 1. Planar arrangement pattern enumeration process (STEP-223), which is the fifth step, and the columnar portions constituting the four corners of the plane arrangement pattern 5 created in the plane arrangement pattern enumeration process (STEP-223) by the arithmetic unit 10a. , The boxes 1... To be used at a height that does not exceed the upper limit of the stacking height, or the boxes 1 to the upper limit that does not exceed the upper limit of the stacking height. After stacking 1..., Stack boxes 1, 1... To be used at a height not exceeding the upper limit of the stacking height in a portion other than the columnar portion, or stacking. A sixth stacking process (STEP-226) for creating a stacking pattern 8 in which boxes 1... Are stacked up to an upper limit height that does not exceed the upper limit value of the attachment height, and an arithmetic unit 10a. , Stacking process ( In the stacking pattern 8 created in TEP-226), the number of boxes 1... That are stacked is equal to or greater than the number of boxes 1. And a stacking pattern extraction process (STEP-227) which is a seventh step of extracting the stacking pattern 8 having a high loading efficiency.

  In addition, the stacking pattern creation program according to the embodiment of the present invention is a stacking pattern in the case of stacking a plurality of boxes 1... A program for creating a stacking pattern 8 to be mounted on the stacking apparatus 10 for creating, based on information relating to the dimensions of the box in plan view, for any type of box 1. The dimension obtained by multiplying the width by an integer or the dimension obtained by multiplying the depth of the box 1 by an integer, and the dimension obtained by multiplying the width of another type of box 1 by an integer or the dimension obtained by multiplying the depth of the box 1 by an integer. In addition, a stacking group creating process (STEP-211) which is a first process for grouping the respective types of box bodies 1... As the same group, and information relating to the dimensions of the box body 1 in a side view. Therefore, when the stacking height when one or a plurality of boxes 1 of any type are stacked and the stacking height when one or a plurality of other types of boxes 1 are stacked match, Are grouped into the same group by the height matching group creation process (STEP-212) and the height matching group creation process (STEP-212), which are the second processes for grouping the box bodies 1 and 1 of the above types as the same group. A column combination pattern enumeration process (STEP-221) which is a third process for extracting a group which does not exceed the upper limit value of the stacking height among the groups of the plurality of types of boxes 1, 1. ..., Each of the boxes 1... 1 included in each group extracted by the column combination pattern enumeration process (STEP-221) Also, a column arrangement pattern enumeration process (STEP-222) and a column arrangement pattern enumeration process (STEP-222), which create a column arrangement pattern 4 that is a pattern arranged so that the boxes 1 exist at the four corners of the pallet 2. -222) used in the creation of the column arrangement pattern 4 in the column arrangement pattern enumeration process (STEP-222) grouped in the same group as each box 1... Planar arrangement pattern 5 which is a pattern which arranges each remaining box 1 which is not done in the position which fills the crevice which exists between each boxes 1 and 1 ... in pillar arrangement pattern 4 It was created in the plane arrangement pattern enumeration process (STEP-223) and the plane arrangement pattern enumeration process (STEP-223) as the fifth process to be created The box-shaped parts constituting the four corners of the planar arrangement pattern 5 are stacked with boxes 1, 1... To be used at a height not exceeding the upper limit of the stacking height, or the stacking height Box 1 that should be used at a height that does not exceed the upper limit of the stacking height in parts other than the columnar part after the boxes 1... Are stacked up to an upper limit that does not exceed the upper limit. ... Sixth processing step for creating a stacking pattern 8 in which the boxes 1... Are stacked up to the upper limit height that does not exceed the upper limit value of the stacking height. Of the stacking pattern 8 created in the stacking process (STEP-226) and the stacking process (STEP-226), the number of the stacked boxes 1. More than 1 ... and high loading efficiency Seventh processing barrel stowage pattern extraction process of extracting the pattern 8 (STEP-227), is intended to be executed by the stowage device 10.

  Furthermore, the stacking apparatus 10 according to the embodiment of the present invention includes a stacking pattern 8 used when stacking a plurality of boxes 1, 1... This is a device for creating a computing device 10a for computing the stacking pattern 8, and the computing device 10a is based on information relating to the dimensions of the box in plan view. 1 · 1... Width multiplied by an integer or a dimension obtained by multiplying the depth of the box 1 by an integer, and a width obtained by multiplying the width of other types of boxes 1 by an integer or the depth of the box 1 multiplied by an integer. When the dimensions match, the stacked group creation process (STEP-211) which is a first process for grouping the respective types of box bodies 1... As the same group, and the box body 1 in a side view. Related to dimensions Based on the report, when the stacking height when one or more boxes of any kind are stacked and the stacking height when one or more boxes of other types are stacked match The height matching group creation processing (STEP-212) and the height matching group creation processing (STEP-212), which are the second processing for grouping these types of boxes 1 and 1 as the same group, are grouped into the same group. A column combination pattern enumeration process (STEP-221) that is a third process for extracting a group that does not exceed the upper limit value of the stacking height from among the grouped grouped boxes 1. And while stacking the boxes 1... 1 included in each group extracted in the column combination pattern enumeration process (STEP-221) in a columnar shape, Column arrangement pattern enumeration processing (STEP-222) and column arrangement pattern enumeration processing (fourth processing) for creating the column arrangement pattern 4 which is a pattern arranged so that the boxes 1 exist at the four corners of the palette 2 at least In the creation of the column arrangement pattern 4 in the column arrangement pattern enumeration process (STEP-222) grouped in the same group as each box 1... Used in the creation of the column arrangement pattern 4 in STEP-222) Planar arrangement pattern 5 which is a pattern which arranges each remaining box 1 which is not used in the position which fills the crevice which exists between each box 1 and 1 ... in pillar arrangement pattern 4. Is created in the plane arrangement pattern enumeration process (STEP-223) and the plane arrangement pattern enumeration process (STEP-223), which are the fifth processes for creating The boxes 1, 1... To be used at a height not exceeding the upper limit of the stacking height are stacked in the columnar portions constituting the four corners of the planar arrangement pattern 5 or the stacking height Boxes that should be used at a height that does not exceed the upper limit of the stacking height in parts other than the columnar part after the boxes 1... 1 are stacked up to an upper limit that does not exceed the upper limit. Sixth processing for creating the stacking pattern 8 in which the bodies 1.1 are stacked or the boxes 1.1 are stacked up to an upper limit that does not exceed the upper limit of the stacking height. Out of the stacking process (STEP-226) and the stacking pattern 8 created in the stacking process (STEP-226), the number of the stacked boxes 1. More than 1.1 ... and high loading efficiency Those comprising a stowage pattern creation program for executing the seventh processing barrel stowage pattern extraction processing of extracting only patterned 8 and (STEP-227), a.

  With such a configuration, an optimum stacking pattern 8 can be created.

In the stacking pattern creation process (STEP-220), next, an empty box complement process (STEP-228) is executed.
The empty box complementing process (STEP-228) is a columnar portion and other parts in each box body 1... Constituting the stacking pattern 8 extracted by the stacking pattern extraction process (STEP-227). If there is a difference in height, the columnar part may fall down.
For this reason, in the empty box complementing process (STEP-228), in order to prevent the columnar portion from falling down, as shown in FIG. , And complement the empty box 1.
In this way, it is possible to create a stacking pattern in which the stacking pattern 8 is further stabilized (referred to as a stabilized stacking pattern 9).

  In other words, the method for creating a stacking pattern according to an embodiment of the present invention is such that when there is a step between a columnar portion and another portion in the stacking pattern 8 created by the arithmetic device 10a, the step is empty. It has the empty box complementation process (STEP-227) which is the ninth step of arranging the box bodies 1.

  The stacking pattern creation program according to an embodiment of the present invention further includes a box that is an empty box at the step when the created stacking pattern 8 has a step between the columnar portion and the other portion. The empty box complementing process (STEP-227) for placing the body 1 is executed by the stacking apparatus 10.

  Furthermore, in the stacking apparatus 10 according to the embodiment of the present invention, the stacking pattern creation program further includes a step difference between the columnar portion and the other portion in the created stacking pattern 8. The empty box complementing process (STEP-227) is executed in which the empty box 1 is placed.

  With such a configuration, it is possible to create a more optimal stabilized stacking pattern 9 that is less likely to collapse.

In the stacking pattern calculation (STEP-200), the process then proceeds to the top surface mismatch stacking pattern creation process (STEP-230).
In the upper surface non-coincident stacking pattern creation process (STEP-230), the box 1 that has not been successfully processed by the stacking pattern creation process (STEP-220) due to non-standard sizes and dimensions is stacked as a target. Execute.

In the upper surface mismatch stacking pattern creation process (STEP-230), when a unit load with poor loading efficiency is created as a result of the stacking pattern creation process (STEP-220), other skids with poor loading efficiency are created. Mix to create a skid that is not aligned on the top surface.
If the loading efficiency is improved by this, the created unit load is adopted.
The upper surface mismatch stacking pattern creation process (STEP-230) is performed when there is no box that could not be processed successfully by the stacking pattern creation process (STEP-220) due to non-standard sizes and dimensions. You do n’t have to.

  In addition, in the case where it is known in advance that there is a box 1 that could not be successfully processed by the stacking pattern creation processing (STEP-220) due to a nonstandard size or size, FIG. As shown, a special box stacking pattern creation process (STEP-215) may be executed prior to the stacking pattern creation process (STEP-220).

  In the special box stacking pattern creation process (STEP-215), it is not necessary to consider the special-sized box 1 in the stacking pattern creation process (STEP-220), so that a reduction in the calculation speed can be avoided, Inefficient unit loads can be avoided.

  In this embodiment, the method for creating a stacking pattern when stacking a plurality of types of boxes has been described, but when it is not necessary to consider stacking, such as when applying to a parcel delivery business. Can simplify the stacking pattern creation process.

  In the stacking pattern creation process (STEP-220) when there is no need to stack the boxes 1, it is not necessary to align the upper surface height of the unit load, so there is no need to form columnar portions at the four corners of the pallet, In order to facilitate picking, it is only necessary to stack the boxes 1.

  In the present embodiment, when a loading pattern creation program is installed in the loading device 10 which is a device for examining the loading pattern, and the loading pattern creation method according to the embodiment of the present invention is executed. However, in addition to using the results of creating the packing pattern for studying transportation costs etc., for example, creating a packing pattern on a stacking device for arranging boxes with a robot arm etc. It is also possible to actually create a unit load while implementing a program and creating a stacking pattern.

DESCRIPTION OF SYMBOLS 1 Box 2 Pallet 3 Column combination pattern 4 Column arrangement pattern 5 Planar arrangement pattern 6 Stabilization pattern 7 Stack pattern 8 Stack pattern 9 Stabilization stack pattern

Claims (12)

A method for creating a stacking pattern using a stacking device for creating a stacking pattern in the case of stacking a plurality of boxes having different types of dimensions on a pallet,
Based on the information relating to the dimensions of the box in a side view, the stacking height when one or more boxes of any type are stacked, and other types of boxes are calculated by the calculation means provided in the stacking device. A first step of grouping each type of box as the same group when the stacking height when one or more stacks match,
From the group consisting of a plurality of types of boxes grouped in the same group in the first step, the group whose stacked height of the boxes does not exceed the upper limit value of the stacked height is extracted by the calculation means A second step of
A column arrangement pattern, which is a pattern in which the boxes included in each group extracted in the second step are stacked in a column shape by the calculation means so that the boxes exist at least at the four corners of the pallet. A third step to create,
Each remaining group that was grouped in the same group as each box used in the creation of the column arrangement pattern in the third step by the computing means, that was not used in the creation of the column arrangement pattern in the third step. A fourth step of creating a planar arrangement pattern, which is a pattern in which the box is arranged at a position to fill a gap existing between the boxes in the column arrangement pattern;
By the arithmetic means, the box-shaped parts constituting the four corners of the planar arrangement pattern created in the fourth step are stacked with boxes that should be used at a height that does not exceed the upper limit of the stacking height, Alternatively, after stacking up to the upper limit height that does not exceed the upper limit value of the stacking height, the boxes that should be used at a height that does not exceed the upper limit value of the stacking height are stacked in a portion other than the columnar portion. Or a fifth step of creating a stacking pattern that is stacked up to an upper limit that does not exceed the upper limit of the stacking height;
Of the stacking patterns created in the fifth step by the computing means, the number of boxes stacked is equal to or greater than the number of boxes to be stacked, and the number of pallets can be smaller. A sixth step of extracting a stacking pattern;
Comprising
A method of creating a stacking pattern characterized by that. Seventh step of creating a stabilization pattern that is a pattern that is stabilized by closing gaps that exist between the boxes constituting the planar arrangement pattern created in the fourth step by the arithmetic means. Having
The method for creating a stacking pattern according to claim 1. further,
Based on the information relating to the dimensions of the box in plan view, by the calculation means, the dimensions obtained by multiplying the width of any type of box by an integer or the dimensions obtained by multiplying the depth of the box by an integer, and other types of boxes An eighth step of grouping each type of box as the same group when the dimension of the width of the integer or the dimension of the depth of the box matches the integer.
In the fifth step, the calculation means replaces each box constituting the stacking pattern with another type of box grouped in the same group in the eighth step, and Create a stacking pattern consisting of different types of boxes having the same shape in
The method for creating a stacking pattern according to claim 1 or 2, characterized in that: In the stacking pattern created by the computing means, when there is a step between the columnar part and the other part, it has a ninth step of arranging a box that is an empty box at the step.
The method for creating a stacking pattern according to any one of claims 1 to 3, wherein: A stacking pattern creation program implemented in a stacking device for creating a stacking pattern when stacking a plurality of boxes having a plurality of different types of dimensions on a pallet,
Based on information about the dimensions of the box in side view, the stacking height when one or more boxes of any type are stacked, and the stacking height when one or more boxes of other types are stacked And the first process for grouping each of these types of boxes as the same group,
Second process of extracting a group in which the stacked height of the boxes does not exceed the upper limit value of the stacked height among the groups of the plurality of types of boxes grouped in the same group in the first process When,
A third column creating a column arrangement pattern that is a pattern in which the boxes included in each group extracted in the second process are arranged in columns so that the boxes are present at least at the four corners of the pallet. Processing,
The remaining boxes that were grouped in the same group as the boxes used in the creation of the column arrangement pattern in the third process, and that were not used in the creation of the column arrangement pattern in the third process, A fourth process of creating a planar arrangement pattern, which is a pattern arranged at a position to fill a gap existing between each box in the pillar arrangement pattern;
Either stack the boxes to be used at a height that does not exceed the upper limit of the stacking height on the columnar portions constituting the four corners of the planar arrangement pattern created in the fourth processing, or stacking After stacking up to the upper limit height not exceeding the upper limit value of the height, the box body to be used at a height not exceeding the upper limit value of the stacking height is piled up in a part other than the columnar part, or A fifth process for creating a stacking pattern that is stacked up to an upper limit that does not exceed the upper limit of the stacking height;
From the stacking patterns created in the fifth process, a stacking pattern in which the number of stacked boxes is equal to or greater than the number of boxes to be stacked and the number of pallets is smaller is extracted. A sixth process to
Is executed by the loading device,
A stacking pattern creation program characterized by that. further,
Seventh processing for creating a stabilization pattern that is a stabilized pattern by filling gaps existing between the boxes constituting the planar arrangement pattern created in the fourth processing,
Executed by the stacking device,
The program for creating a stacking pattern according to claim 5. further,
Based on the information related to the dimensions of the box in plan view, the width of any type of box is an integer multiple or the depth of the box is an integer multiple, and the width of other types of boxes is an integer multiple. When the dimension or the dimension obtained by multiplying the depth of the box by an integer is equal, the eighth process of grouping each type of box as the same group is performed.
In the fifth process, the boxes constituting the stacking pattern are replaced with other types of boxes grouped in the same group in the eighth process, and have the same shape in plan view. , Create a stacking pattern consisting of different types of boxes,
Executed by the stacking device,
The program for creating a stacking pattern according to claim 5 or 6, characterized in that: further,
In the created stacking pattern, when there is a step between the columnar part and the other part, the ninth process of arranging a box that is an empty box at the step,
Executed by the stacking device,
The program for creating a stacking pattern according to any one of claims 5 to 7, wherein: A stacking device for creating a stacking pattern used when stacking a plurality of boxes having different types of dimensions on a pallet,
Computation means for computing the stacking pattern,
The computing means is:
Based on information about the dimensions of the box in side view, the stacking height when one or more boxes of any type are stacked, and the stacking height when one or more boxes of other types are stacked And the first process for grouping each of these types of boxes as the same group,
Second process of extracting a group in which the stacked height of the boxes does not exceed the upper limit value of the stacked height among the groups of the plurality of types of boxes grouped in the same group in the first process When,
A third column creating a column arrangement pattern that is a pattern in which the boxes included in each group extracted in the second process are arranged in columns so that the boxes are present at least at the four corners of the pallet. Processing,
The remaining boxes that were grouped in the same group as the boxes used in the creation of the column arrangement pattern in the third process, and that were not used in the creation of the column arrangement pattern in the third process, A fourth process of creating a planar arrangement pattern, which is a pattern arranged at a position to fill a gap existing between each box in the pillar arrangement pattern;
Either stack the boxes to be used at a height that does not exceed the upper limit of the stacking height on the columnar portions constituting the four corners of the planar arrangement pattern created in the fourth processing, or stacking After stacking up to the upper limit height not exceeding the upper limit value of the height, the box body to be used at a height not exceeding the upper limit value of the stacking height is piled up in a part other than the columnar part, or A fifth process for creating a stacking pattern that is stacked up to an upper limit that does not exceed the upper limit of the stacking height;
From the stacking patterns created in the fifth process, a stacking pattern in which the number of stacked boxes is equal to or greater than the number of boxes to be stacked and the number of pallets is smaller is extracted. A sixth process to
A stacking pattern creation program for executing
A stacking device characterized by that. The stacking pattern creation program is
further,
Performing a seventh process of creating a stabilization pattern that is a stabilized pattern by closing gaps between the boxes constituting the planar arrangement pattern created in the fourth process;
The stacking apparatus according to claim 9. The stacking pattern creation program is
further,
Based on the information related to the dimensions of the box in plan view, the width of any type of box is an integer multiple or the depth of the box is an integer multiple, and the width of other types of boxes is an integer multiple. When the dimension or the dimension obtained by multiplying the depth of the box by an integral number is executed, the eighth process of grouping each type of box as the same group is executed,
In the fifth process, the boxes constituting the stacking pattern are replaced with other types of boxes grouped in the same group in the eighth process, and have the same shape in plan view. Execute the process of creating a stacking pattern consisting of different types of boxes,
The stacking apparatus according to claim 9 or 10, characterized in that The stacking pattern creation program is
further,
In the created stacking pattern, when there is a step between the columnar part and the other part, execute a ninth process of placing a box that is an empty box on the step.
The stacking apparatus according to any one of claims 9 to 11, wherein the stacking apparatus is characterized in that

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