JP2872957B2 - Box stacking and stacking device - Google Patents

Description

DETAILED DESCRIPTION OF THE INVENTION

[0001]

BACKGROUND OF THE INVENTION 1. Field of the Invention The present invention relates to a box stacking and stacking apparatus suitable for stacking boxes containing, for example, cosmetics, foodstuffs, medicines and the like in an aligned state.

[0002]

2. Description of the Related Art Generally, in a factory that manufactures products such as cosmetics, foodstuffs, medicines, and the like, for example, a predetermined number of products are put in small boxes, and the boxes are arranged and stacked by a box aligning and stacking device. Plural pieces are arranged in a row in a row,
They are shipped in large boxes for transportation.

[0003] A prior art box stacking and stacking apparatus of this type will be described with reference to Figs.

[0004] In the drawings, reference numeral 1 denotes a conveyor device. The conveyor device 1 turns a box 2 containing products such as cosmetics, foodstuffs, and medicines toward a box aligning and stacking device 11 described later. It is transported in the direction A shown.

[0005] Reference numeral 11 denotes a box aligning and stacking device provided on the downstream side of the conveyor device 1. The box aligning and stacking device 11 includes a box stacking case 12 and an alignment number detecting sensor 18 to be described later. , A stacking stage number detection sensor 19.

Reference numeral 12 denotes a box stacking case capable of arranging up to six boxes 2 in a row of five boxes 2. The box stacking case 12 includes a lifting conveyor 13, a guide plate 14,
It is roughly composed of 15 and the like.

[0007] Reference numeral 13 denotes an elevating conveyor arranged so as to be continuous with the conveyor device 1;
The boxes 2 successively conveyed by the conveyor device 1 are conveyed in the direction of arrow A toward the downstream side. On the elevating conveyor 13, a maximum of five boxes 2 are arranged in a line. ing. A lifting mechanism 13A for raising and lowering the lifting conveyor 13 is provided below the lifting conveyor 13, and the lifting mechanism 13A always positions the lifting conveyor 13 on the same plane as the conveyor apparatus 1. When the set number of boxes 2 are arranged on the upper surface side of the elevating conveyor 13, the elevating conveyor 13 is raised to a predetermined position.

Reference numerals 14 and 15 denote rectangular guide plates disposed on the left and right sides of the elevating conveyor 13, respectively. Of the guide plates 14 and 15, one of the guide plates 14 is located on the left side in the transport direction. Has a horizontal slit 16 and a vertical slit 17 which will be described later. And the guide plates 14, 1
Reference numeral 5 guides each box 2 raised by the lifting conveyor 13 so as to sandwich the box 2 from the left and right.

Reference numeral 16 denotes a horizontal slit formed on the lower side of the guide plate 14. The horizontal slit 16
3 so as to extend along the box 2 conveyed by the conveyor 3 in the conveying direction of the elevating conveyor 13. The horizontal slit 16 is movably mounted with an aligned number detection sensor 18 for detecting the number of one row of each box 2 supplied on the elevating conveyor 13.

Reference numeral 17 denotes a vertical slit formed on the downstream side of the guide plate 14. The vertical slit 17 is located at the most downstream side and is stacked in the stacking direction so as to be along the box 2 which is raised by the lifting conveyor 13. (In the vertical direction). In the vertical slit 17, a stacking stage number detection sensor 19 for detecting the number of stages when the boxes 2 are stacked is movably mounted.

Reference numeral 18 denotes an aligned number detecting sensor mounted on the horizontal slit 16 of the guide plate 14 so as to be movable in the directions of arrows B and B '. The aligned number detecting sensor 18 includes, for example, a light emitting element and a light receiving element. (Not shown), and outputs a signal to a control device (not shown) via a lead wire 18A when the box body 2 is disposed in front of the sensor. Here, the aligned number detection sensor 18 detects how many boxes 2 supplied from the conveyor device 1 onto the elevating conveyor 13 are arranged in a line on the elevating conveyor 13. 13 to detect that five boxes 2 are lined up
It is positioned at the upstream end of the horizontal slit 16 so that the presence / absence of the fifth box 2, which is the most upstream side, can be detected (the number of set boxes in a row is five).

Reference numeral 19 denotes a stacking stage number detection sensor which is mounted on the vertical slit 17 of the guide plate 14 so as to be movable in the directions indicated by arrows C and C '. For example, it is formed as a reflection type sensor having a light emitting element and a light receiving element, and outputs a signal to the control device via the lead wire 19A when the box body 2 is disposed in front. Here, the stacking stage number detection sensor 19 detects how many stages each box 2 is stacked when the five boxes 2 arranged on the elevating conveyor 13 are raised and stacked by the elevating conveyor 13. In this prior art, in order to detect that the boxes 2 are stacked in four levels, the middle part of the vertical slit 17 is detected so as to detect the presence or absence of the fourth stage of the box 2 on the most downstream side. (The number of stacking stages set is 4).

The prior art box stacking and stacking apparatus is constructed as described above. Next, the operation of the apparatus will be described.

First, when the boxes 2 are sequentially conveyed in the direction of arrow A by the conveyor device 1, the boxes 2 are transferred onto the elevating conveyor 13 and provided at the downstream end of the elevating conveyor 13. Abuts against a stopper (not shown). And
As shown in FIG. 7, when five boxes 2 are arranged in a row on the elevating conveyor 13, the fifth box 2 is detected by the aligned number detection sensor 18 and a signal is output to the control device. Thereby, the control device outputs a signal to the lifting mechanism 13A, and raises the five boxes 2 together with the lifting conveyor 13 as shown in FIG. Then, 5 raised with the lifting conveyor 13
Each of the boxes 2 is held upward by a holding device (not shown) at a position raised by a predetermined amount, and only the elevating conveyor 13 descends to the conveyor device 1, and as shown in FIG. Wait for supply of 2.

The above operation is repeated, and as shown in FIG. 6, when the boxes 2 are stacked in four stages between the guide plates 14 and 15, the stacking stage number detection sensor 19 is at the fourth stage and located on the most downstream side. And outputs a signal to the control device. In this way, the control device discharges each box 2 in a four-tiered arrangement of a total of 20 pieces by a discharge device (not shown) toward a next packing process for transport, which is the next process.

On the other hand, when the number of rows and the number of stacking stages are changed when stacking the boxes 2, for example, when the number of stacked boxes is changed to two in three rows, the number-of-aligned detection sensor 18 is moved in the direction of arrow B. It moves and arrange | positions in the position corresponding to the 3rd box 2 from the downstream, and moves the stacking stage number detection sensor 19 in the arrow C 'direction and arranges in the position corresponding to the 2nd box 2 In this way, it is possible to cope with a change in the number of rows and the number of stacking stages. Also, when the dimensions of the box 2 are changed, it is possible to cope with this by moving the detection sensors 18 and 19 as appropriate.

[0017]

By the way, in the box aligning / stacking apparatus 11 according to the above-described prior art, when the number of boxes, the number of stacking steps, and the size of the boxes 2 are changed, they are aligned according to the changed contents. Set the number detection sensor 18 to the horizontal slit 1
6 and the stacking stage number detection sensor 19 is moved along the vertical slit 17.

However, in order to move the detection sensors 18 and 19 themselves along the slits 16 and 17, the detection sensors 1 and 19 need to be moved.
8 and 19 must be loosened and moved, and the screws must be tightened again.
Is required to be accurately positioned with respect to the box 2 which is the object to be detected, and there is a problem that the setting change operation requires a very long time.

Further, since the detection sensors 18 and 19 themselves are moved, the detection sensors 18 and 19 may be damaged, and the lead wires 18A and 19A may be connected to the detection sensor 1.
Since it is necessary to increase the length so that the movement of 8, 19 can be tolerated, there is a possibility that the lead wires 18A, 19A may be hooked and damaged when the setting is changed.

Further, according to the prior art, only the fifth box 2 is detected by the aligned number detecting sensor 18 and only the fourth box 2 at the most downstream side is detected by the stacking step number detecting sensor 19. Therefore, for example, even if the box 2 is hooked on the elevating conveyor 13 and the fourth box 2 is arranged at the position of the normal fifth box 2, the aligned number detection sensor 18 is not used. However, the fourth box 2 is erroneously detected as the fifth box 2, and the erroneous detection causes a misalignment, which lowers the operating rate of the aligning and stacking device 11 for the box. There is a problem.

The present invention has been made in view of the above-described problems of the prior art, and can prevent misalignment due to erroneous detection of a box and damage to a sensor when a setting is changed, and facilitates setting change to improve workability. It is an object of the present invention to provide an apparatus for stacking and stacking box bodies.

[0022]

Means for Solving the Problems To solve the above-mentioned problems, an apparatus for arranging and stacking boxes according to the first aspect of the present invention comprises a plurality of boxes which are conveyed and arranged in a plurality of rows. It is arranged in the transport direction in order to detect the number of boxes in a row stacked and housed in a stacked manner, and the number of boxes transported in the one-stage alignment direction to the case. An alignment number detection sensor, an alignment number setting shutter movably provided along the alignment number detection sensor, and partially shielding the alignment number detection sensor according to a set alignment number for one row; and the box body step In order to detect the number of stages when each box body is stacked in the stacking direction by the stacking case, a stacking stage number detection sensor disposed in the stacking direction, and a box movably provided along the stacking stage number detection sensor, Depending on the number of stacking stages Comprising a laminate raising stage number detection sensor is composed of a stack number setting shutter partially shielding Te.

With this configuration, when setting the number of lines to be arranged, one of the detection units of the aligned number detection sensor other than the portion that can detect the set number of boxes is shielded by the aligned number setting shutter. By doing so, it is possible to cause the aligned number detection sensor to detect that the number of sequentially supplied boxes has reached the set number, and to set the number of stacking stages, the setting unit of the detection unit of the stacking stage number detection sensor By blocking the portion other than the portion where the number of stacking stages can be detected by the stacking stage number setting shutter, the stacking stage number detection sensor can detect that the number of stages of the sequentially stacked boxes has reached the set stacking stage number. Without moving the detection sensor and stacking stage number detection sensor, just move the shutter for setting the number of aligned stages and the shutter for setting the number of stacking stages, and align and stack the boxes. The Suto the alignment condition can be easily set.

Further, since the aligned number detection sensor detects all the boxes arranged in a line, the set number of boxes can be reliably detected. Further, since the stacking stage number detection sensor detects all the stacked boxes in the stacking direction, the set stacking stage number can be reliably detected.

[0025]

DETAILED DESCRIPTION OF THE PREFERRED EMBODIMENTS An apparatus for arranging and stacking boxes according to an embodiment of the present invention will be described below with reference to FIGS. In the present embodiment, the same components as those of the above-described related art are denoted by the same reference numerals, and description thereof will be omitted.

In the figure, reference numeral 21 denotes a box aligning and stacking apparatus according to the present embodiment provided downstream of the conveyor apparatus 1;
The box stacking and stacking device 21 is generally composed of a box stacking case 22, a number-of-alignment detection sensor 28, an arrangement number setting shutter 31, a stacking number detection sensor 33, and a stacking number setting shutter 36, which will be described later.

Reference numeral 22 denotes a box stacking case in which five boxes 2 can be lined up to six stacks in a row. The box stacking case 22 includes a lifting conveyor 23, a guide plate 24,
It is roughly composed of 25 and the like.

Reference numeral 23 denotes an elevating conveyor arranged so as to be continuous with the conveyor device 1, and the elevating conveyor 23 comprises
Similar to the elevator 13 described in the prior art, the box 2 sequentially transported by the conveyor device 1 is transported in the direction of arrow A toward the downstream side.
Above, up to five boxes 2 are arranged in a line. An elevating mechanism 23A that moves the elevating conveyor 23 up and down is provided below the elevating conveyor 23,
The elevating mechanism 23A always positions the elevating conveyor 23 on the same plane as the conveyor device 1 and raises the elevating conveyor 23 to a predetermined position when a set number of boxes 2 are arranged on the upper surface side of the elevating conveyor 23. Things.

Numerals 24 and 25 denote rectangular guide plates disposed on the left and right sides of the elevating conveyor 23, respectively. Guide from left and right. Also,
A horizontal slit 26 and a vertical slit 27, which will be described later, are formed on the guide plates 24 and 25, and the guide plate 24 located on the left side in the transport direction is positioned at the horizontal slit 26 and the vertical slit 27 to set the number of aligned lines. A shutter 31 and a stacking stage number setting shutter 36 are attached.

26, 26 are horizontal slits formed below the guide plates 24, 25 (only the guide plate 24 side is shown).
The horizontal slits 26 extend in the transport direction of the elevator 23 along the box 2 transported by the elevator 23 and open at the same position.

Reference numerals 27, 27 denote vertical slits formed on the downstream side of the guide plates 24, 25.
Extend in the stacking direction (vertical direction) along the box body 2 which is located at the most downstream side and is lifted by the lifting conveyor 23, and are opened at the same position.

Reference numeral 28 denotes an aligned number detecting sensor provided in the box stacking case 22 according to the present embodiment. The aligned number detecting sensor 28 is a guide plate 24 on the left side in the transport direction.
And a light emitting device 29 provided over the entire length of the horizontal slit 26 and a guide plate 25 on the right side in the transport direction so as to face the light emitting device 29 and provided over the entire length of the horizontal slit 26. And a light receiver 30. Then, the aligned number detection sensor 28 controls the control device in a state where the maximum number of the five boxes 2 is supplied on the elevating conveyor 23, that is, in a state where the light emitter 29 and the light receiver 30 are all blocked. (Not shown).

Reference numeral 31 denotes an alignment number setting shutter provided between the horizontal slit 26 of the guide plate 24 and the light emitting device 29 of the alignment number detection sensor 28. The alignment number setting shutter 31 extends along the horizontal slit 26. It is formed as a long flat plate which can be moved in the directions indicated by arrows D and D '. On its free end side, the alignment number setting shutter 31 is fixed or moved with respect to the horizontal slit 26 by rotating a lever 32A. An enabling positioning mechanism 32 is provided. Then, the aligned number setting shutter 31 moves in the directions indicated by arrows D and D ′ according to the set number of the boxes 2 for one row, and
9 and the light receiver 30 are partially blocked, and when five boxes 2 are arranged in a line as in the present embodiment, the arranged number setting shutter 31 is moved most in the direction of arrow D '. At the moved position, it is fixed by the positioning mechanism 32.

Reference numeral 33 denotes a stacking stage number detection sensor according to the present embodiment, which is provided in the box stacking case 22. The stacking stage number detection sensor 33 is on the left side in the transport direction like the aligned number detection sensor 28. A light emitting device 34 provided on the guide plate 24 and provided over the entire length of the vertical slit 27.
And a light receiver 35 provided on the guide plate 24 on the right side in the transport direction so as to face the light emitter 34 over the entire length of the vertical slit 27. Then, the stacking stage number detection sensor 33 is in a state where the boxes 2 are stacked by the elevating conveyor 23 and the boxes 2 are stacked up to the maximum stacking number of six stages, that is, all the space between the light emitter 34 and the light receiver 35 is provided. A signal is output to the control device in the interrupted state.

Reference numeral 36 denotes a stacking stage number setting shutter provided between the vertical slit 27 of the guide plate 24 and the light emitting device 34 of the stacking stage number detection sensor 33. The stacking stage number setting shutter 36 extends along the vertical slit 27. Arrow E,
A positioning mechanism which is formed as a long flat plate which is movable in the direction E ', and at the upper end of which a lever 37A is rotated to fix or move the stacking stage number setting shutter 36 with respect to the vertical slit 27. 37 are provided. The stacking stage number setting shutter 36 is connected to the box 2
Moves in the directions indicated by arrows E and E 'in accordance with the set number of stacking stages, and partially blocks between the light emitting device 34 and the light receiving device 35.
When stacking the boxes 2 up to four levels as in this embodiment,
The stacking stage number setting shutter 36 is moved in the direction indicated by the arrow E or E ', so
It is configured to be fixed by the positioning mechanism 37 at a position where the portion corresponding to the step or higher is shielded.

The box aligning and stacking apparatus 21 according to the present embodiment.
Next, the procedure and operation for setting the alignment conditions (number of aligned lines, number of stacked stages) by the aligned number setting shutter 31 and the stacking stage number setting shutter 36 will be described.

First, the procedure for setting the alignment conditions of the boxes 2 will be described by taking as an example a case where five boxes 2 are stacked in four rows.

First, in order to set the number of aligned shutters 31 to five, the lever 32 of the positioning mechanism 32 is used.
A is rotated so that the aligned number setting shutter 31 can be moved. Then, the alignment number setting shutter 31 is moved in the direction indicated by the arrow D 'so that the light emitter 29 and the light receiver 30 of the alignment number detection sensor 28 face each other through the horizontal slits 26 over the entire length. To rotate the lever 32A and fix it with the positioning mechanism 32.

On the other hand, in order to set the stacking stage number setting shutter 36 to four stacking stages, the lever 37A of the positioning mechanism 37 is rotated to make the stacking stage number setting shutter 36 movable. Then, the stacking stage number setting shutter 36 is moved in the direction of arrow E or E ', and the light emitting device 34 and the light receiving device 35 of the stacking stage number detection sensor 33 are moved through the respective vertical slits 27.
Is shielded at the fifth stage or higher, and the lever 37A is rotated at this position and fixed by the positioning mechanism 37.

Next, based on the setting of the alignment conditions described above,
The operation of the box stacking and stacking device 21 will be described.

First, the conveyor 2 moves up and down the conveyor 2
When the boxes 2 are sequentially supplied onto the conveyor 3, as shown in FIG. 2, when five boxes 2 are supplied onto the elevating conveyor 23, the light emitting device 29 and the light receiving device 30 of the aligned number detecting sensor 28 Is completely interrupted, the aligned number detection sensor 28 outputs a signal to the control device, and as shown in FIG.
Thereby, the five boxes 2 are raised together with the lifting conveyor 23. Then, the five box bodies 2 raised together with the lifting conveyor 23 are held by a holding device (not shown) at a position raised by a predetermined amount, and only the lifting conveyor 23 is lowered to the conveyor device 1. As shown in FIG. 4, the supply of the next box 2 is waited.

Here, each box 2 is aligned with the aligned number detecting sensor 2.
8, for example, when the box 2 is moved up and down the conveyor 23
When the fourth box 2 is disposed at the normal fifth position by being caught in the middle of the step, a gap is formed between the boxes 2, and light from the light emitter 29 is transmitted to the light receiver 30. Therefore, occurrence of misalignment can be detected by the number-of-arrangements detection sensor 28, and an accident can be prevented beforehand by notifying an operator or the like.

Then, the above operation is repeated, and as shown in FIG. 1, when each of the boxes 2 reaches the fourth stage, the fifth or higher stage of the detecting section of the stacking stage number detecting sensor 33 becomes the stacking stage number. Since the gap between the light emitting device 34 and the light receiving device 35 of the stacking stage number detection sensor 33 is completely blocked by being blocked by the setting shutter 36, the stacking stage number detection sensor 33 controls that the set stacking stage number has been reached. Output to the device. In this way, the control device discharges each box 2 in a four-tiered arrangement of a total of 20 pieces by a discharge device (not shown) toward a next packing process for transport, which is the next process.

On the other hand, when the alignment condition is changed from four rows in five rows to four rows in three rows, as shown in FIG. 5, the positioning mechanism 32 is loosened and the shutter 31 for setting the number of rows is moved. Moving in the direction of arrow D, the aligned number detection sensor 2
8, the portion corresponding to the fourth or more boxes 2 is shielded, the positioning mechanism 37 is loosened, and the stacking stage number setting shutter 36 is moved in the direction indicated by the arrow E '.
By shielding the portion corresponding to the third or higher box 2 of 3, the setting can be easily changed to a two-stage stack in three rows.

Thus, according to the present embodiment, when setting the number of aligned boxes 2, the set number of boxes 2 is detected between the light emitter 29 and the light receiver 30 of the aligned number detection sensor 28. By blocking portions other than the possible portions with the alignment number setting shutter 31, the number of aligned boxes 2 can be easily set, and when the number of stacked stages of each box 2 is set, the number of stacked stage detection sensors 33 The number of stacking stages can be easily set by blocking the portion other than the portion between the light emitter 34 and the light receiver 35 that can detect the box 2 corresponding to the set number of stacking stages with the stacking stage number setting shutter 36. In addition, the setting according to the alignment conditions and the workability at the time of changing the setting can be greatly improved, and the operation rate of the box stacking and stacking device 21 can be improved.

Further, in this embodiment, since the aligned number detecting sensor 28 and the stacking stage number detecting sensor 33 are fixed,
The aligned number detection sensor 28, the stacking stage number detection sensor 33
And lead wires (not shown) can be prevented, and the durability of the box stacking and stacking device 21 can be increased,
Reliability and life can be improved.

Further, all the boxes 2 arranged by the arranged number detecting sensor 28 can be detected, and all the boxes 2 stacked can be detected by the stacking number detecting sensor 33 in the stacking direction. It is possible to prevent the box 2 from being erroneously detected due to the box 2 being caught or the like, prevent misalignment due to the erroneous detection, reduce the operation stoppage time of the box stacking and stacking device 21, and reduce the operation rate. Can be improved.

On the other hand, a positioning mechanism 32 is provided on the alignment number setting shutter 31, and a lever 32A of the positioning mechanism 32 is provided.
By rotating the shutter, the alignment number setting shutter 31 can be fixed or movable. Also, a positioning mechanism 37 is provided on the stacking step number setting shutter 36, and the lever 37A of the positioning mechanism 37 is rotated to rotate. Since the stacking stage number setting shutter 36 can be fixed or movable, the alignment number setting shutter 31 and the stacking stage number setting shutter 36 can be operated only by operating the levers 32A and 37A.
Can be positioned, the setting operation can be facilitated, and the operation rate can be further improved.

In the above-described embodiment, the sensors 28 and 34 for detecting the number of lines and the number of stacking stages are used as the light emitters 29 and 34.
Although the case where it is composed of and the light receivers 30 and 35 is illustrated,
As a detection sensor, a reflection type sensor incorporating a light emitting element and a light receiving element may be used.

In the above-described embodiment, the arrangement number setting shutter 31 is provided on the light emitting device 29 side of the alignment number detection sensor 28, and the stacking stage number setting shutter 36 is provided on the light emitting device 34 side of the stacking stage number detection sensor 33. However, the alignment number setting shutter and the stacking stage number setting shutter may be provided on the light receiving device side, and the shutter is not limited to this as long as it can shield the light emitting device and the light receiving device.

[0051]

As described in detail above, according to the first aspect of the present invention, when the number of aligned rows is set, the set number of boxes can be detected in the detection unit of the aligned number detection sensor. By shielding the portions other than the portion with the aligned number setting shutter, the aligned number detection sensor can detect that the number of boxes supplied sequentially reaches the set number. Further, when setting the number of stacking stages, the number of stacking boxes to be sequentially stacked is set by blocking a portion of the detection unit of the stacking stage number detection sensor other than a portion capable of detecting the set stacking stage number with a stacking stage number setting shutter. The fact that the number of stacking stages has been reached can be detected by the stacking stage number detection sensor. As a result, the alignment conditions such as the number of aligned boxes and the number of stacking stages can be easily adjusted only by moving the shutter for setting the number of alignments and the shutter for setting the number of stacking stages without moving the sensor for detecting the number of aligned lines and the sensor for detecting the number of stacking stages. In addition to being able to prevent damage to each sensor etc. to improve the life and reliability, it is also possible to improve the workability of setting and setting change work according to the alignment conditions, The operation rate can be improved.

Further, by detecting all the boxes arranged in a line by the arrangement number detecting sensor, the set number of the boxes can be reliably detected, and any of the boxes stacked by the stacking stage number detecting sensor can be detected. By detecting the total number in the stacking direction, the set number of stacking stages can be reliably detected.
It is possible to prevent erroneous detection due to the box being caught or the like, and prevent misalignment of the box due to this erroneous detection.

[Brief description of the drawings]

FIG. 1 is a partially broken external perspective view showing an apparatus for arranging and stacking boxes according to an embodiment of the present invention.

FIG. 2 is an operation explanatory view showing a state in which five boxes are arranged on a lifting conveyor.

FIG. 3 is an operation explanatory view showing a state where five boxes are raised to a second stage by an elevating conveyor as viewed from the same position as in FIG. 2;

FIG. 4 is an operation explanatory view showing a state in which five boxes are held between respective guide plates and the elevating conveyor is lowered, as viewed from the same position as in FIG. 2;

FIG. 5 is an operation explanatory view showing a state in which three alignment conditions are changed to two-stage stacking in three rows, as viewed from the same position as in FIG. 2;

FIG. 6 is an external perspective view showing a conventional box stacking and stacking apparatus.

FIG. 7 is an operation explanatory view showing a state in which five boxes are arranged on a lifting conveyor.

FIG. 8 is an operation explanatory view showing a state in which five boxes are raised to a second stage by a lifting conveyor as viewed from the same position as in FIG. 7;

FIG. 9 is an operation explanatory view showing a state in which five boxes are held between guide plates and the elevating conveyor is lowered, as viewed from the same position as in FIG. 7;

[Explanation of symbols]

 2 Box 21 Stacking Unit for Stacking Boxes 22 Box Stacking Case 28 Aligned Number Detection Sensor 31 Aligned Number Setting Shutter 33 Stacking Stage Number Detection Sensor 36 Stacking Stage Number Setting Shutter

Claims (1)

(57) [Claims] 1. A case stacking case in which a plurality of boxes are conveyed in a row so as to be stacked in a plurality of rows, and a case in which the boxes are conveyed to the box stacking case in a one-step alignment direction. In order to detect the number of one row of the coming box, an aligned number detection sensor arranged in the transport direction and a movable unit along the aligned number detection sensor are provided according to the set number of aligned rows. An alignment number setting shutter that partially shields the alignment number detection sensor; and a stacking unit arranged in the stacking direction to detect the number of stages when each box is stacked in the stacking direction by the box stacking case. A stage number detection sensor,
It is provided movably along the stacking stage number detection sensor,
An apparatus for arranging and stacking boxes, comprising a stacking step number setting shutter for partially blocking the stacking step number detection sensor according to the set stacking step number of the box.