JP7774294B2 - Automatic carton supply device - Google Patents

Description

The present invention relates to an automatic carton supply device.

One example of a device that removes multiple flat cartons for box packaging stored in a cardboard box and automatically supplies them to a cartoner is the device disclosed in Patent Document 1. In this device, multiple cartons are stored in an upright position in the cardboard box, and a pair of claw members is inserted into the cardboard box to clamp and grip the entire carton group consisting of multiple cartons. The device is then configured to remove the carton group all at once by removing the pair of claw members from the cardboard box while in this state, and then move the carton group to a predetermined position in the cartoner, where it releases its grip and automatically supplies the carton group to the cartoner.

On the other hand, if flat cartons are packed in a cardboard box in a stacked state, using the device disclosed in Patent Document 1 would make it impossible to grip the cartons at the bottom, and would also result in horizontal cartons being clamped from the side, which could cause the clamped cartons to come apart and fall or become bent. Therefore, the device disclosed in Patent Document 1 cannot be used. Therefore, to feed cartons packed in a cardboard box in such a flat stack to the cartoner, an operator had to manually remove them from the cardboard box and feed them.

Patent No. 3923523

Manual supply work places a heavy burden on workers, making it difficult to work continuously for long periods of time, and workers need to be rotated from time to time. Furthermore, in order for a supply device to automatically remove cartons packed flat from a cardboard box, for example, a bundle of multiple cartons stacked one on top of the other can be wrapped around a band and packed so that the band is positioned on the upper opening side of the cardboard box. The supply device can then be configured to remove the bundle of cartons from the cardboard box by grasping the band or by sucking and lifting the exposed part at the opening, and then setting it in place in the cartoner.

However, with such devices, it is cumbersome to cut the band after setting the carton in the cartoner, and then remove and collect the cut band. Furthermore, because the band goes all the way around the carton, when it is set in the cartoner, part of the band gets caught between the carton and the cartoner's loading section. This makes the mechanisms for removing the band and for handling the removed band complex, and requires many mechanisms and elements for automation.

The above-mentioned problems are described as being independent of each other, and the present invention does not necessarily have to solve all of the problems described; it is sufficient if it can solve at least one of the problems. Furthermore, we intend to obtain rights to the configurations that solve these problems separately through divisional applications, amendments, etc.

In order to solve the above-mentioned problems, the automatic carton supply device of the present invention is (1) an automatic carton supply device that removes cartons from a box containing a group of cartons, where the cartons are stacked one on top of the other, and supplies the cartons to a downstream device. The automatic carton supply device includes: a reversing guide with a holding unit that is inserted into the gap between the open-topped box and the carton unit from above to suction-hold the cartons from the inside; a loading unit that supports the cartons that move downward relative to the box when the reversing guide turns the box upside down; a robot arm to which the reversing guide and the loading unit are attached; and a suction unit that can suction-hold the outside of the box when the reversing guide has turned it upside down. The automatic carton supply device is configured to control the operation of the robot arm so that the holding unit releases the suction hold on the box while the reversing guide and the loading unit descend, move the loading unit to the input side of the device, and transfer the cartons placed on the loading unit to the device.

In this way, the robot arm operates to lower the reversing guide from above the box and insert the holding unit into the box. The reversing guide is then turned upside down while suction-holding the box from the inside, thereby inverting the box's orientation. This causes the carton group to move relatively downward within the box and place on the placement unit. The robot arm also operates to raise the reversing guide, pressing the bottom of the box against the suction unit to suction-hold the box. In this state, the suction-holding by the holding unit is released, and the reversing guide and placement unit are lowered, removing the carton group placed on the placement unit from the box. The placement unit is then moved to the loading side of the device, and the carton group placed on the placement unit is handed over to the device, automatically removing the carton group consisting of multiple cartons from the box and supplying it to the device. In this embodiment, the device corresponds to a conveying device located on the loading side of the cartoner. In this embodiment, the suction unit corresponds to the second suction cup unit 31.

(2) The reversing guide and the placement section may be configured as separate components, and the reversing guide may be detachably attached to the robot arm. In this way, after the carton group is removed from the box, the reversing guide can be removed and placed in a predetermined position, and the carton group placed on the placement section can be transferred to the device. Since the carton group can be transferred with the robot arm detached from the reversing guide, the configuration is simplified, the reversing guide does not get in the way during the transfer operation, and the transfer can be performed with a simple configuration.

(3) It is preferable that the holding portion has a function of contacting and adhering to the bottom of the box. This allows the box to be held firmly.

(4) The holding portion may preferably have the ability to contact and suction the inner surface of the box. In this way, even if the tip of the holding portion cannot reach the inner surface of the box due to the shape of the carton or the depth of the box, it can be suction-held and the box can be inverted. Furthermore, by combining this with the invention of (3), it is possible to suction-hold both the bottom and sides of the box, allowing for a more secure hold.

(5) It is preferable to provide a moving means for moving the suction unit from a first position where it suctions the box to a second position, and for the moving means to move the suction unit to the second position while it is still holding the box, and for the suction unit to release suction at the second position, thereby enabling the box to be transferred to a conveying device. In this way, empty boxes can be automatically transferred to the conveying device, and tasks such as discharging and disposing of the boxes can be easily performed.

According to the present invention, multiple cartons stored in a box in a vertically stacked state can be removed from the box and automatically fed into a device such as a cartoner.

1 is a plan view showing a preferred embodiment of a system in which an automatic carton supply device according to the present invention is implemented. 1 is a front view showing a first conveying device that conveys a cardboard box containing a group of cartons, and a second conveying device that constitutes a cartoner; FIG. FIG. 2 is a perspective view showing a robot body. FIG. 1A is a diagram showing an example of a carton, and FIG. 1B is a plan view showing the carton housed in a cardboard box. FIG. 1 is a diagram (part 1) for explaining the operation. FIG. 2 is a diagram (part 2) for explaining the operation. FIG. 3 is a diagram (part 3) for explaining the operation.

The following describes in detail preferred embodiments of the present invention with reference to the drawings. However, the present invention should not be construed as being limited to these embodiments, and various changes, modifications, and improvements may be made based on the knowledge of those skilled in the art without departing from the scope of the present invention.

Figures 1, 2, etc. show a preferred embodiment of the automatic carton supply device according to the present invention and a box-making system in which it is implemented. The automatic carton supply device 10 of this embodiment has the function of removing carton groups 14, each consisting of multiple cartons 13 stacked inside a cardboard box 12 that is sequentially conveyed by a first conveying device 11 located upstream, and supplying them to a second conveying device 16 located downstream.

As shown in FIG. 4(a) and elsewhere, the carton 13 to be supplied in this embodiment comprises a rectangular bottom 131, side walls 132 arranged adjacent to the four sides of the bottom 131, an outer flap 133 arranged adjacent to the top side of one of the four side walls 132, an inner flap 134 arranged adjacent to the top sides of the remaining three side walls 132, and a glue tab 135 for bonding adjacent side walls together, all of which are formed into a single sheet in an unfolded state. A group of cartons 14 is formed by stacking multiple such sheet-like cartons 13 one on top of the other, and is stored within the cardboard box 12. In this embodiment, multiple cartons 13 are stored in a stacked position without being strapped with bands or the like. When the carton group 14 is stored inside the cardboard box 12, as shown in Figure 4(b) and other figures, gaps are formed between the four corners of the interior of the cardboard box 12 and the four corners of the carton group 14 in a plan view, and the bottom 121 of the cardboard box 12 is exposed above and not hidden by the carton group 14.

The first conveying device 11 is composed of, for example, a belt conveyor, finger conveyor, bucket conveyor, etc., and operates intermittently to temporarily stop when the cardboard box 12 is positioned at the downstream discharge location, and controls its operation to keep the cardboard box 12 at the discharge location for a predetermined time. Alternatively, rather than temporarily stopping the conveyor, a stopper member may be provided that temporarily stops the transport by contacting the cardboard box 12 during transport, thereby keeping the cardboard box 12 at the discharge location. Furthermore, it is not necessary to temporarily stop the cardboard box 12 at the discharge location; the automatic carton supply device 10 may perform a predetermined process on the cardboard box 12 while it is moving, but it is preferable to temporarily stop the cardboard box 12 at a predetermined position, as in this embodiment.

The cardboard boxes 12 containing the carton groups 14 are sequentially set into the system in an unopened, packed state. Therefore, this system has the function of opening the top of the cardboard box 12 during transport by the first conveying device 11 or at a predetermined position upstream of the first conveying device 11, and folding back the outer flaps 122 and inner flaps 123 to open the top of the cardboard box 12. As a result, as shown in FIG. 1 and other figures, the cardboard box 12 moving on the discharge side of the first conveying device 11 assumes an open position with the outer flaps 122 and inner flaps 134 open outward. This exposes the tops of the carton groups 14 contained within the cardboard box 12 that is temporarily stopped at the discharge location, and also exposes the four corners of the bottom 121 of the cardboard box 12 that are not hidden by the cartons 13.

The second conveying device 16 includes two endless belts 20 arranged at a predetermined interval in a direction perpendicular to the conveying direction, pulleys 21 (only the upstream pulleys are shown in the figure) arranged at the front and rear of the two endless belts 20 along the conveying direction, and buckets 22 attached to the left and right endless belts 20. The buckets 22 are arranged at a predetermined pitch along the conveying direction, and the automatic carton supply device 10 supplies carton groups 14 removed from cardboard boxes 12 into the buckets 22 in a state where multiple cartons 13 are stacked one above the other. The carton groups 14 are then transported and assembled into boxes along with the buckets 22, which move in accordance with the rotation of the endless belts 20.

The bucket 22 also has a bottom plate 221 and side wall plates 222 that are provided on the left and right ends of the bottom plate 221 and rise outward, away from the endless belt 20. The bottom plate 221 has two concave cutouts on the left and right sides that extend from the rear end in the conveying direction to the front. As a result, in a plan view, the bottom plate 221 has three legs, consisting of side sections 2211 on both left and right edges and a central section 2212, that connect at the front end and extend rearward. These three legs support the bottom of the carton group 14, and the left and right side wall plates 222 guide the left and right sides of the carton group 14, preventing the stacked cartons 13 from collapsing and ensuring stable conveyance.

The automatic carton supply device 10 of this embodiment includes a robot body 24 having a robot arm 23 that can move along a predetermined trajectory in three-dimensional space, and a box recovery device 25 that recovers the cardboard box 12 that contains the carton group 14.

As shown in Figure 3 and other figures, the robot main body 24 is equipped with a placement section 26 on which cartons 13 (carton groups 14) can be placed, and a reversing guide 27 that holds cardboard boxes 12, attached to the robot hand at the tip of the robot arm 23.

The mounting unit 26 includes two support rods 261 spaced a predetermined distance apart and a connecting member 262 that cantilevers the support rods 261. The connecting member 262 is connected to the tip of the robot arm 23. In this embodiment, the mounting unit 26 is controlled in position and posture by the robot arm 23. For example, when the two support rods 261 are positioned horizontally and a group of cartons 14 is placed on the support rods 261, the group of cartons 14 can be stably supported. The spacing between the two support rods 261 may be narrower than the width of the bottom 131 of the carton 13, for example, so that both support rods 261 can simultaneously contact and support the bottom 131. While the number of support rods 261 is two in this embodiment, it may be three or more. Having three or more rods makes it easier to support cartons 13 of different dimensions and shapes. It is preferable to configure each support rod 261 to be positioned on the same plane. In addition, in the embodiment, the support rod 261 is in the shape of a round bar, but the shape is arbitrary, and it may be in various forms such as a plate shape.

The reversing guide 27 has holding portions 272 at the four corners of one surface of a flat, rectangular base member 271. The holding portion 272 has a rod-shaped guide portion 2721 and a first suction cup portion 2722 attached to the tip of the guide portion 2721. The guide portion 2721 is formed in the shape of a hollow cylinder with both ends open, and has a passage for air to be sucked in by the first suction cup portion 2722. In addition, a pipe connected to the air passage of the guide portion 2721 is provided inside the base member 271, and when the reversing guide 27 is attached to the robot arm 23, this pipe is connected to a pipe leading to a suction device such as a vacuum pump on the robot arm 23. As a result, by connecting to the suction device, an object can be sucked and held by the suction surface at the tip of the first suction cup portion 2722.

Furthermore, as shown in FIG. 1 etc., the four holding portions 272 are arranged to face the four corners of the bottom 121 of the cardboard box 12, and are formed with dimensions and shapes that allow them to enter the gap formed between the carton group 14 and the inner surface of the cardboard box 12. Furthermore, the length of the holding portions 272 should be the same as or longer than the depth of the cardboard box 12, and should be long enough so that when the four holding portions 272 enter the cardboard box 12 from above, the suction surfaces at the tips of the first suction cup portions 2722 come into contact with the bottom 121 of the cardboard box 12.

Furthermore, in this embodiment, the reversing guide 27 is detachably attached to the robot hand at the tip of the robot arm 23 via a hand changer tool (not shown). When the reversing guide 27 is attached, it is connected to the piping on the robot arm 23 side as described above, and is capable of being attracted to the suction surface at the tip of the first suction cup portion 2722 when the suction device is activated. When the reversing guide 27 is released from its connection, it can be separated from the robot arm 23. When the robot arm 23 is separated from the released reversing guide 27, only the placement portion 26 is attached to the tip of the robot arm 23.

The box recovery device 25 includes a lever 32 with a second suction cup 31 at one end and a third conveying device 33 that conveys empty cardboard boxes 12. The lever 32 is configured to rotate forward and backward around the other end as the center of rotation. The lever 32 is configured to rotate forward and backward within an angular range of 180 degrees in a vertical plane, alternately transitioning between a second position in which the second suction cup 31 is located on the upper side and a first position in which the second suction cup 31 is located on the lower side. The third conveying device 33 is a belt conveyor including a pair of endless belts 331 arranged on the left and right. When the lever 32 is in the second position, the suction surface of the second suction cup 31 is positioned between the pair of endless belts 331 with the suction surface facing upward. When the lever 32 is in the first position, the suction surface of the second suction cup 31 is positioned away from the third conveying device 33 with the suction surface facing downward.

The automatic carton supply device 10 configured as described above controls the robot body to perform the following operations, removing a group of cartons 14 stored in a cardboard box 12 from the cardboard box 12 and supplying them into the bucket 22 of the second conveying device 16.

First, while the cardboard box 12 containing the group of cartons 14 is temporarily stopped and waiting at the discharge location of the first conveying device 11, the robot main body 24 operates, and the robot arm 23, with the placement unit 26 and reversing guide 27 attached to its tip, moves along a predetermined trajectory, positioning the reversing guide 27, with the holding unit 272 extending below the base member 271, above the cardboard box 12 waiting at the discharge location, as shown in FIG. 5(a). Next, the robot main body 24 lowers the tip of the robot arm 23, and thus the reversing guide 27, to insert the holding unit 272 into the cardboard box 12, bringing the suction surface of the first suction cup 2722 into contact with the bottom 121 of the cardboard box 12 and applying suction to the first suction cup 2722 to suction and hold the four corners of the bottom 121 of the cardboard box 12 (see FIG. 5(b)). In this state, the four holding portions 272 are each positioned within the gap formed between the carton group 14 and the cardboard box 12, and the upper opening of the cardboard box 12 is covered by the base member 271.

Next, while still holding the cardboard box 12 by suction, the robot main body 24 raises the reversing guide 27 and turns it upside down, thereby turning the cardboard box 12 upside down and positioning the opening so that it faces downward. As a result, the group of cartons 14 inside the cardboard box 12 moves downward relative to the cardboard box 12 due to gravity and is placed on the placement section 26 (see Figure 5(c)).

Then, the upside-down cardboard box 12 is moved to the box recovery device 25, and the outer bottom surface of the cardboard box 12 is pressed against the second suction cup unit 31 installed above (see Figure 5(d)). In this state, the second suction cup unit 31 is activated to suck the cardboard box 12.

In this state, the suction of the first suction cup 2722 of the reversing guide 27 is stopped, and the robot hand is lowered. Accordingly, the reversing guide 27 and the placement unit 26 are lowered, and the group of cartons 14 placed on the placement unit 26 are also lowered and removed from the cardboard box 12 (see Figure 6(a)).

Next, the robot main body 24 operates the robot arm 23 to position the reversing guide 27, with the holding portion 272 facing upward, above the reversing guide storage area 35, and places the reversing guide 27 on the reversing guide storage area 35 (see FIG. 6(b)). In this state, the hand changer tool is operated to detach the reversing guide 27 from the robot hand. The robot arm 23 is then operated to move the placement unit 26 upward. As a result, the group of cartons 14 placed on the placement unit 26 also rises and moves out of the reversing guide 27 (see FIG. 6(c)). In this state, the group of cartons 14 is supported by the two support rods 261 that make up the placement unit 26 (see FIG. 6(d)). The robot main body 24 then operates the robot arm 23 to move the placement unit 26 along a predetermined trajectory to the loading area of the second conveying device 16. As a result, the carton group 14 placed on the placement section 26 is also transported to the loading area of the second conveying device 16.

Meanwhile, the second conveying device 16 operates intermittently, and when it temporarily stops, the empty bucket 22 waits at the loading area. As shown in FIG. 1, the bottom plate 221 of the bucket 22 has three legs extending rearward from the front edge, consisting of side sections 2211 on the left and right and a central section 2212. The robot main body 24 operates the robot arm 23 so that the two support rods 261 of the loading section 26 pass from top to bottom through the notch between the central section 2212 and the side sections 2211. As a result, the group of cartons 14 placed on the loading section 26 are transferred onto the bottom plate 221 of the bucket 22, and are then transported together with the bucket 22 as it moves to the second conveying device 16, where they are folded and assembled into boxes by a cartoner.

Meanwhile, when the box recovery device 25 attracts a cardboard box 12 in the first position where the second suction cup 31 faces downward, as shown by the two-dot chain line in Figure 7, it rotates the lever 32 180 degrees to move to the second position. During this time, suction by the second suction cup 31 continues. As a result, as shown by the solid line in Figure 7, the second suction cup 31 is positioned between the pair of left and right endless belts 331 of the third conveying device 33, and the bottom of the cardboard box 12 is placed so that it is stretched across the pair of left and right endless belts 331. In this state, the suction of the second suction cup 31 is released. Thereafter, the empty cardboard box 12 is transported by the conveying force of the third conveying device 33. For example, if a device for compressing cardboard is located downstream of the third conveying device 33, the operations of removing cartons 13 from the cardboard boxes 12 and feeding them to the cartoner, and collecting the empty cardboard boxes 12 from which the cartons have been removed, can be fully automated. Alternatively, the collection work may not be automated, and workers may collect the cardboard boxes 12 transported by the third transport device 33.

In this embodiment, the reversing guide 27 is configured to be detachable, so when transferring the carton group 14 to the second conveying device 16, it is only necessary to move the two support rods 261 from above to below the bottom plate 221 of the bucket 22. Furthermore, it is easy to change the size to accommodate, for example, different dimensions and shapes of the cartons 13.

Note that the present invention does not necessarily require the reversing guide to be detachable; the reversing guide 27 may remain attached while being moved to the second conveying device 16 for supply. In this case, for example, the placement section 26 may be configured as a separate member from the reversing guide 27 as in the above-described embodiment, but it is also advisable to use the base member 271 of the reversing guide 27 as a placement section. It is also advisable to change the shape of the base member 271 to a flat rectangular shape so as not to interfere with the structure of the supply position on the cartoner side. Furthermore, if the reversing guide 27 is left attached, an attachment/detachment mechanism is not required, simplifying the device configuration. Furthermore, the holding section 272 functions as a guide to prevent lateral movement while the carton group 14 removed from the cardboard box 12 is being moved horizontally, which is advantageous.

In the above-described embodiment, the carton 13 is an airplane type, which leaves relatively large gaps at the four corners when it is stored inside the cardboard box 12. Therefore, four holding portions 272 are provided, each of which is configured in a round rod shape. However, the present invention is not limited to this type of carton 13 and can be applied to cartons of various shapes. Even if there is little or no gap between the carton and the cardboard box, for example, the shape of the holding portion can be such that the cross section perpendicular to the axial direction is flat and thin, or when inserting the holding portion into the cardboard box, the cardboard box can be tilted to move the carton to one side, creating a gap. A holding portion with a suction portion at its tip can then be inserted into the gap and suction-hold the bottom 121.

Furthermore, while providing four holding parts and arranging them at the four corners as in the embodiment is preferable as this allows for stable holding of the cardboard box, it is also possible to reduce the number of parts and hold the cardboard box by suction in two or one location, for example. In particular, when tilting the cardboard box, such as when the gap that is originally formed is narrow, as in the modified example described above, it is preferable to configure the box so that one or more holding parts are inserted on the upper side where the gap is formed.

Furthermore, while the surface to be suctioned may be the bottom 121 of the cardboard box 12 as in the embodiment, it is also possible to suction the inner peripheral surface of the cardboard box instead of or in addition to that. For example, a flat portion may be provided on at least a portion of the outer peripheral surface of the guide portion 2721 constituting the holding portion 272 that faces the inside surface of the cardboard box, and a suction hole may be provided there so that the inner surface of the cardboard box can be suctioned.

In particular, for cases where only two pieces can fit on one side, it is advisable to flatten the two holding portions 272 (guide portions 2721) so that at least the portion facing the inside surface of the cardboard box is flat, and so that it also adheres to the inside surface of the box. In this case, it is advisable to provide a suction cup portion at the tip of the guide portion 2721, but this is not necessarily required.

Furthermore, in the above-described embodiment, the multiple cartons 13 are stored in a stacked position within the cardboard box 12 without being banded with straps or the like, and even unbanded carton groups 14 can be automatically removed from the cardboard box 12 and fed to the cartoner. However, the present invention does not exclude application to carton groups in which multiple cartons 13 are banded with straps.

When applied to a banded type, the band must be cut and collected. This can be done after setting the cartoner as in the past, but in this embodiment, the cardboard box 12 is sucked and held by the reversing guide 27 and inverted, and the group of cartons 14 placed on the loading section 26 by inversion are then removed from the cardboard box. Therefore, it is preferable to perform this operation while the carton is being removed from the cardboard box or while the carton is being moved toward the cartoner after removal. For example, a cutter device that cuts the band can be placed along the movement path, and the robot arm 23 can be operated so that the band comes into contact with the cutter device and is cut. Furthermore, when applied to a banded type, it is preferable to provide a convex portion on the loading surface of the loading section 26 to lift the group of cartons 14 above the loading surface to make the band easier to collect.

In addition, in the above-described embodiment, the second suction cup unit 31 is attached to a lever 32 that rotates 180 degrees forward and backward in a vertical plane, and is displaced between a first position in which it faces downward and a second position in which it faces upward. In the second position, the second suction cup unit 31 is positioned at the same level as or below the conveying surface of the third conveying device 33, thereby maintaining suction in the second position and facilitating transfer to the third conveying device 33. However, the present invention is not limited to this, and the direction of movement is arbitrary. Furthermore, the boxes may be transferred to the conveying device in a downward or sideways position, rather than being turned upright as in the embodiment.

While various aspects of the present invention have been described above using embodiments, it should be noted that these embodiments and descriptions are provided to aid in understanding the present invention, and are not intended to limit the scope of the present invention. The scope of the present invention is not limited to the configurations and manufacturing methods explicitly described in the specification, but also includes combinations of the various aspects of the present invention disclosed herein. While the configurations of the present invention that are sought to be patented are specified in the appended claims, it is hereby expressly stated that configurations not currently specified in the claims may be claimed in the future as disclosed herein.

10: Automatic carton supply device 11: First conveying device 12: Cardboard box 121: Bottom 13: Carton 14: Group of cartons 16: Second conveying device 23: Robot arm 24: Robot body 25: Box recovery device 26: Placement section 261: Support rod 262: Connecting member 27: Reversing guide 271: Base member 272: Holding section 2721: Guide section 2722: First suction cup section 31: Second suction cup section 32: Lever 33: Third conveying device 35: Reversing guide storage area

Claims (5)

An automatic carton supply device that removes a group of cartons, each of which is a stack of cartons, from a box containing the group and supplies the group of cartons to a downstream device, comprising:
a reversing guide including a holding portion that is inserted into a gap between the box and the group of cartons from above the box with the top open and that holds the box by suction from the inside;
a loading section that supports the group of cartons that moves downward relatively within the box when the box is turned upside down by the turning guide;
a robot arm that attaches the reversing guide and the placement unit;
a suction portion capable of suction-holding the outer side of the box in a position inverted upside down by the inversion guide;
a function of releasing the suction hold of the box by the holding unit while the box is being sucked by the suction unit, and controlling the operation of the robot arm so that the reversing guide and the placement unit are lowered;
1. An automatic carton supplying device, comprising: a loading section that is moved to a carry-in side of the device; and a group of cartons loaded on the loading section that is transferred to the device. The reversing guide and the placing section are configured as separate members,
2. The automatic carton supply device according to claim 1, wherein the reversing guide is detachably attached to the robot arm. The automatic carton supply device according to claim 1 or 2, characterized in that the holding part has the function of contacting and adsorbing the bottom of the box. An automatic carton supply device according to any one of claims 1 to 3, characterized in that the holding part has the function of contacting and adsorbing the inner surface of the box. a moving means for moving the suction unit from a first position where the suction unit suctions the box to a second position,
5. The automatic carton supply device according to claim 1, wherein the moving means moves the box to the second position while the suction unit is still holding the box, and the suction unit releases suction at the second position, thereby enabling the box to be transferred to a conveying device.