DE1957761A1 - Device for erecting or unfolding flat, tubular cardboard boxes or the like. - Google Patents

Description

PATENT LAWYERS 7300 DI PL.-PHYS. DR. J. FRICKE

Υ3'00 DIPL.-INQ. F. THIELEKE

DR.-INQ. R. DOERING BRAUNSOHWEia MUNICH

John Donald Winters, 218? Braemar Road Oakland, California (USA)

Device for erecting or unfolding flat, tubular Cardboard boxes or the like.

The invention relates to a device for erecting or Unfolding of flat, tubular cardboard boxes or the like. Which are hingedly connected from one another in the circumferential direction Wall dividers exist in the unfolded or erected State enclose a polygonal cross-section.

Devices of the type mentioned at the outset can be used to a large extent in the handling of cardboard boxes. For example, among the more common uses of such devices are those in which precise weight foods are packaged in cartons. The area of application is; however not limited to this precision packing work when filling the net weight into cartons. Volume-dependent I ¹ UI processes, displacement or impressing filling processes, as well as filling processes by means of automatic metering devices, can be used together with devices of the type mentioned at the beginning. , ■

In a known device disclosed in US Pat 2 984 162 of March 16, 1961, the unfolding or righting relative movement of suction grippers between which the folded or flat cardboard box is gripped in the form of a relative displacement of the grippers in the direction of one another run towards or away from each other.

The device designed according to the invention differs fundamentally from this known embodiment of a device of the type mentioned at the outset in that it is considerably simplified and, in comparison with the known device, is also made considerably more compact. The known embodiments of devices of the type in question require a relative displacement, pivoting or other movement of the cardboard gripper during the opening movement in order to transfer the folded, flat cardboard into the unfolded or open state as soon as it is gripped by the grippers from opposite sides is. According to the present invention, the suction grippers are connected to a vacuum source via a vacuum line or other devices, into which a vacuum interruption device, for example a valve, as well as collecting and distribution lines of a known type can expediently be connected. During the erection process, a rotational movement of the grippers about parallel axes takes place, which is normally generated by a cam-controlled Lejiker arrangement, which is arranged essentially at a lateral distance from the grippers, in order to _:

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enable compensation or adaptation to the length of the lid base of a carton eu gripped between the grippers. Eb, of course, pneumatic, hydraulic or electromotive movement drive devices or combined devices of this type can also be used instead of this device.

When using multi-headed grippers, these are in one Sequence carried by suitable and known towing or conveying devices and are moved by these past a loading magazine for cardboard boxes. As the magazine approaches, one of the grippers becomes physical with respect to the other offset to bring about a spacing from the loading magazine. At the same time, however, is the associated other gripper during this moment in the process of removing a flat cardboard box from the conveying or loading magazine. Followed by laran if the latter is rotated by 90 °, the box is relative to the

To align the direction of movement of the heads correctly.

When this alignment has taken place, the laterally offset gripper is returned to its starting position. namely on an axis which is parallel to the axis of engagement and thereby transferred into suction contact with the opposite surface of the side wall portion of the carton. Everyone who The gripper is then rotated clockwise by 90 ° around its axis. The grippers are driven in a synchronized manner and rotate at the same time. The axis of one gripper runs parallel to the axis of the other gripper. Because one of the

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Gripper in suction contact with a wall and the other gripper is in suction contact with an opposite wall part of the cardboard box, the rotation of each gripper that is in connection with a Vandteil or suction contact and takes place over an arc of 90 ° and around parallel axes, so that the walls, which originally lay on top of one another, separate from one another. When the walls are apart separate, the remaining two walls of the flat folded cardboard are moved into a position in which they run at right angles to each other and to the other two walls already mentioned, so that the box now assumes its fully opened, or erect, or unfolded tubular shape shown in Fig. 5b.

Embodiments of the new device are in the drawings shown.

Fig. 1 shows a plan view of one in the flat state folded box, however, arranged between two suction pads.

Figure 1a shows a perspective view of the folded flat cardboard.

2 shows a side view of the carton according to FIG. 1 when viewed in the direction of arrows 2-2 in FIG.

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Fig. 3 shows a plan view in the direction of arrows 3-3 in Fig. 2 and shows part of the handlebar parallelogram, which is used to impart the rotational movement of the grippers around the pivot points.

Fig. 4 shows a plan view according to Fig. 1, but it shows the carton in the unfolded or opened state

and the associated relative rotation of the suction pads.

Fig. 4a shows the position of the link arms when they are partially open Cardboard according to Fig. 4.

Fig. 5 shows a top view according to Fig. T, but at full opened box.

Fig. 5a shows the position of the link arms when the box is completely open.

Fig. 5b shows a perspective view of the fully opened Cardboard boxes.

Fig. 6 shows a plan view of the entire device, in which folded flat cardboard from a Loading magazine A can be brought into a position in which they are between the suction pads and finally transferred to the fully open position F.

009822/0286

Pig. 7 shows a perspective detailed view of the suction grippers according to FIG.

Pig. 8 shows a view of the device according to FIG when looking in the direction of arrows 8-8.

FIG. 9 shows a view of the “device according to FIG. 6C when looking in the direction of arrows 9-9

Fig. 10 shows a view of the device according to Fig. 6D when looking in the direction of arrows 10-10.

Fig. 11 shows a view of the device according to Fig. 6F when looking in the direction of arrows 11-11.

Reference is now made to the individual figures.

Fig. 1 shows an unfolding head 10. This unfolding head 10 has a pair of identically designed, but one another
oppositely arranged suction grippers 11, 12.

The suction grippers 11, 12 are suitable and known per se Way connected to a vacuum source.

When working, the suction cups open a box C by

them from the flat, collapsed state that is in

Fig. 1 is shown over a partially opened or unfolded.-

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th, state according to Fig. 4 in the fully opened or unfolded Transfer the state that is shown in FIG. 5.

The carton C is, as FIGS. 1, 2, 4, 4a, 5 and 6 recognize let, designed as a conventional cardboard box and consists of the rectangular-shaped boxes characteristic of such boxes Wall parts d, e, f and g (Fig. 5b). It is also with the usual lid flaps h, i, j and k on both sides or equipped at the upper and lower end (see Fig. 5b).

Reference is now made again to FIG. 1, from which it can be seen that the suction cups 11, 12 normally Arranged above a platform or a table 13 that can be moved in a predetermined direction.

Below the platform or the table 13 is a parallelogram of the handlebars 14 according to FIG. This handlebar parallelogram has the usual parallel arms 15 and 16 which are articulated at 21 and 22 to a cross-connecting rod 17, the outer connecting rod 17 is fixed and at an angle of 90 ° on a working rod 18 on the putty between the arms 15 and 16 is attached.

At the end of the arm 15 that is connected to the Crossbar 17 is removed, the gripper 11 is firmly connected by suitable means at 20 to the arm 15, while the end of the arm 16, that of connecting this

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BATH

Arm with the cross bar 17 is removed, firmly, namely is in turn connected to the gripper 12 via suitable connecting devices 19.

When working in one direction or the other, the working rod 18 generates corresponding rotational movements of the suction grippers 11 and 12 about parallel axes of rotation and generated so also rotary movements of the carton side wall parts with which the suction grippers 11 and 12 are in suction contact. By this movement, in turn, the respective cartons, as shown in FIGS. 4 and 5, open.

Reference is now made to Figure 2 which shows which way the gripper head 10 according to Fig. 1 is connected through the table 13 with the handlebar parallelogram. the Fig. 2 shows the arrangement when viewed in the direction of arrows 2-2 in Fig. 1. It can be seen that the box C is arranged between the suction grippers 11 and 12 and that these suction grippers are carried by rods 23, 24, the in turn are arranged on rotatable disks 25 »26. The discs are arranged in the top of the table 13 and connected to the ends 19, 20 of the arms 15, 16 (Fig. 3).

When looking along the arrows 2-2 in Fig. 1 (as in Fig. 2) you can see how the box C is placed directly between the Suction grippers 11, 12 are arranged, which, like FIG. 1

. however, shows a distance from each other. The suction

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gripper 12 is attached to the disc 25 via the rod 24, while the rod 23 is attached to the disk 26, which is located behind the disk 25 in FIG. To avoid the impression that both rods 23 and 24 are attached to a single disk 25, the lower part of the rod 23 has been broken off. This measure is explained solely for the purpose of improving the representation.

It can be seen that the movement of the actuating arm 18 leads to the connecting rods 19, 20 about their in the perpendicular direction rotating axes. The movement of the actuating arm 18 can be carried out in any known manner Connection to a drive source can be controlled. However, this movement causes the suction grippers to be rotated about their pivot points 27, 28. The gripper 11 rotates around the Joint 27, while the gripper 12 is rotated about the joint 28.

Mg. 1 and 3 show the position of the suction cups 11 and 12 at the moment when the box is still folded or flat state in which it is removed from the loading magazine. Arms 15th and 16th of the handlebar parallelogram 14 are still in the corresponding position in this state. The same box is in 1a shown in a perspective view., '-. .

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• -10- ·

Fig. 4 shows an intermediate step or state in
Erecting or opening or unfolding the carton, while FIG. 4a shows the position of the arms 15 and 16 which they assume when the carton is in this partially opened or intermediate state.

In Fig. 4, the joints 27, 28 remain in the same position in which they are also shown in Fig. 1, while the
The suction cups have been twisted clockwise around their joints. Since the suction grippers are in suction contact with the side wall parts d, f of the carton G during this rotation
are located (Fig. 4) the clockwise rotation of this gripper leads to the fact that the side wall parts move away from each other.

5 shows the suction grippers 11 and 12 in suction contact
with the side wall parts d, f. The box is now in place
in the fully opened, erect or unfolded state of use. The suction grippers 11, 12 have been rotated through a total distance of 90 ° and have performed rotations about their joints 27, 28. However, this rotation of the suction grippers also swiveled the side wall parts of the box by 90 °. This opening or movement of the originally folded cardboard brings it into the state shown in FIGS. 5 and 5t).

The position of the Iienker parallelogram, which is when the

00 9822/0 286 & ®

or erected cardboard is shown in Fig. 5a. It should be noted that the operating rod 18 from the initial position , which is shown in Fig. 3, now in an end position, which is shown in Fig. 5a, has been moved. As shown, guides the downward actuation movement of the actuation rod 18 through the connection with the cross-connecting rod 19 to the fact that the fixed connections 19, 20 to Be rotated 90 °. This rotation in turn causes the disks 25 and 26 to be rotated through 90 °. The rotary motion these disks in turn cause the suction pad support rods to rotate. These in turn cause that the grippers rotate, but such a rotation of the grippers always takes place around the joints 27, 28. These joints 27 »28 are separated from one another by a predetermined distance, which is always the distance between the side walls of the opened cardboard box.

The Pig. 1 to 5a thus explain how that in the initial state Flat-folded or flat-folded cardboard from this state to the fully opened or open state is convicted.

The? Ig. ο explains the application of the invention. trained Device for a fully automatic device for opening cardboard boxes. There are a larger number wandering suction heads in use. In this training the device becomes a suitable, movable support element

- / 12 009822/02 86

33 is used, on which the suction heads via holding pieces 34 are attached, which move in a right-angled horizontal plane. It should be noted that the same working principle can be applied even if it is not a rectangular one Movement path, but for example a rotational movement is carried out by the moving supports 33 part a drive element which rotates around a certain axis and in which the individual suction heads 10 are radially spaced are arranged from this axis.

FIG. 6 shows a plan view of this development of the Contraption. A loading magazine 31 can be seen. The cardboard boxes C are held in a perpendicular position in the magazine 31, which for this purpose has a lower support device (not shown) possesses, while wall supports or guides 29 and 30 are still provided. The wall 30 is on one Provided the end with an angled foot 32. This angled foot 32 protrudes laterally in the direction of the path of the cardboard boxes C, which at Contemplating the pig. 6 A can be moved in the right direction.

Fixed guide and stiffening elements hold the boxes in place LIagazin. This is done in the usual way. However, it can always one box alone or individually from the loading magazine can be removed. Pressure is applied to the back of the entire amount of cardboard boxes in order to accommodate it to ensure that a feed or loading takes place at the point

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follows from which the boxes are removed. Such Guide, stiffening and advancing elements are numerous known designs in use and therefore need neither be explained nor illustrated here.

To remove a cardboard box from the loading magazine however, a new facility used. The support or support element for the suction gripper 11 of each gripper head is equipped with a sliding stop for a cardboard box, which is opposite to the rear as seen from the G-reif extends to the direction of migration. As FIG. 6A shows, the fixed guide elements 29 and 30 are at a distance from one another arranged. The suction gripper 11 moves horizontally Direction across both ends in these guide devices. This also makes the slide stop 32 accordingly emotional. However, the slide stop 32 extends from a support arm 33 down, -wherein the distance by which he extends downwards, is chosen so large that the sliding stop 32 only the rear edge of the top or frontmost carton in the loading magazine is detected. Through the Movement of the slide stop in the horizontal direction 32 is touched and detected by the slide stop 32 Cardboard box taken and moved in the direction of the suction head. When folded up and still in the "flat" state The box starts to emerge from the loading magazine, the front end comes with the angular foot 32 in touch so that the folded box is facing

009822 / 028.6

is advanced onto the suction cup 11 (see Pig, .6B)

As in the Pig. 6, namely A and B shown, are the individual cartons one after the other from the gripper heads 10 detected and removed from the loading magazine 31. Around To enable operation, it must be ensured that the suction gripper 12 does not collide with the magazine 31 when he is in motion while the other gripper is at the same time IT is about to remove a box from the magazine. the Means by which this is achieved will be described later. Although in the following and at this point always reference to a vertical arrangement of the boxes and a horizontal movement should be mentioned, that this reference only refers to the simple parstellüngweise related and that other positional relationships are possible and can be beneficial. The carton that was removed is in the Pig. 6 C shown in a chase, in which he looks completely from the Beschlctonggmagazin 31 has separated, but is only grasped by the gripper 11 and collapsed with in the flat state lying wall parts d, e., f and g is transported, these wall parts parallel to the moving direction of the device or * the course of the working direction. The second gripper 12 is in this state (Pig. 6) still in withdrawn or price-sharing while the gripper 11 is in suction contact with the carton G, namely with its wall part f, stands *

BAD ÖRKälNAk, ~ / ¹ 5

·. · ■■ ... 00i8if / 02SB '■

Then the box C, which is only used by the gripper 11 is held, rotated by 90 °, while the carton is in the Position 6 D is transferred. When the carton has been reoriented, with the gripper 11, and in this way one Position in which he is in an angular position of Located 90 ° to the starting position in the loading magazine 31, the second suction gripper 12 was moved and now into the gripping position convicted. The suction gripper 12 now comes into suction contact with that wall parts of the cardboard box C, that which the yeast gripper 11 already recorded in suction grip, is opposite. The pig shows the position of these components. 6 among the Pos. C and D.

Following this, the suction cups 11 and 12 are around their Joints 27, 28 twisted in order to open the carton C or to bring about the unfolded or erected state, the in Pig. 6 under going. P is shown. During a further transport of the carton C through the suction gripper head 10 the opened carton is further treated in any way required. This further processing can, for example, consist of that the bottom flaps are glued and sealed. After that, the carton can be made and a gluing and a closing of the deeke flaps take place. All of this work can be done while the carton is still in the suction handle of suction grippers 11 and 12.

009 8 22/028 6 BADORiGINAL

The invention. trained device, which with parallel running axes works, prevents the disadvantages of the so-called reaction devices. In such Devices of known design, a compressive force is exerted on the front edge of the carton in question to open it initiate. The operation of such known devices leads to considerable errors because there is the possibility of that a bulging of the cardboard body sets in immediately behind the leading edge. Also compared to the other known devices in which the carton wall parts are separated by grippers, but in which a physical one Shifting the gripper in relation to each other occurs, we willow according to the invention. achieved significant advantages.

The parallel axes of rotation of the invention. trained device create the conditions for a new, uniform way of working when opening or holding cardboard boxes by placing opposing wall parts of the folded or flat cardboard and detected by direct application of force in a single pivoting process can be opened by 90 ° and when pivoting in a common direction, with the grippers about their own fixed axes be twisted. This work represents a remarkable advantage, because it is achieved with it that the axes to which the grippers rotate are at the same distance from the axes around which the others at all times Grippers will rotate and it will still be done in a very simple way

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made sure that the sidewall parts from the grippers under direct control and application of force away from each other be moved without this being necessary that the gripper itself in a physical displacement movement relative to the side wall portions of the carton and must be moved relative to itself to bring about the opening.

Pig. 6 D shows the position of the folded flat cardboard according to Pig. 1, with the box between the suction pads 11 and 12 is arranged.

Pig. 6 E shows the carton in one of the positions in Pig. 4 corresponding position, whereby he is on the way to opening is located.

Pig. 6 P shows the box in a fully opened state accordingly the representation in Pig. 5.

The Pig. 7 shows a perspective view of the position of the suction cups 11 and 12 in the position that they are in Pig. IO take, the sliding stop 32 from the arm 33 after protrudes below. The supports 23, 24 for the gripper can in any known manner with the ends of the parallel arms 15, 16 as long as they are taken care of the rotation of the grippers 11, 12 about the joints 27, 28 according to FIG. enable the description above.

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FIG. 8 shows a view of the device when looking in the direction of arrows 8-8 in FIG
Magazine 31 pushes out. However, it also shows the gripper 11, which is carried by the same arm that also holds the sliding stop 32. This figure also shows how the arm 24 and
with it the gripper 12 is raised so that an exemption from the path of the magazine is achieved during the path of the suction gripper heads. This movement of the grippers out of the movement area of the magazine can be brought about in any desired manner, for example also by means of known control cams and similar devices.

Fig. 9 shows a view of the device at
Viewing in the direction of arrows 9-9 in Fig. 6 results. This view shows the gripper 11 in suction contact with the carton G, while the gripper 12 is also in suction contact with the carton C, the gripper 11 being turned 90 in the direction of
without a reference number in Fig. 6C registered arrows rotated
became.

lig. 10 shows a view in FIG. 6 D results when viewed in the direction of arrows 10-10 after the cardboard C i has been rotated by 90 ° in order in Saugschluß him or
Suction contact with the gripper Λ2 closed. convict. That means
In other words, the box C from pos.

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according to Pig. 9 by turning into the position according to Pig. 10 convicted became. The carton C is now in the same position as in the plan view in Pig. 1 is shown, the Grippers begin to turn around their joints 27 and 28 to bring the carton into the fully opened state according to Pig. 5 to convict. . *

The Pig. 11 now shows a view which results when the device is turned in the direction of arrows 11-11 according to Pig. 6 p considered. The Pig. 11 shows how the grippers stand when their rotation by 90 ° from the position according to Pig. 10 have finished out. The box is now fully open State and is ready to close the bottom flaps. You can then pull and close the top flaps be made.

In the pig. 1 to 5 b are examples of devices with which the grippers 11, 12 around their joints 27, 28 can be rotated, and devices and examples of such devices have also been shown by which the Grippers 11 and 12 with a handlebar parallelogram 14 in connection can be brought. Devices other than this can, however, be applied in order to achieve a simultaneous synchronous To allow rotation of this gripper, and there are others than those discussed. Ways to grapple with each other associate.

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Claims (18)

- 20th
Claims Device for erecting flat, tubular cardboard boxes Or the like. Which from successive in the circumferential direction articulated wall parts exist, which one in the unfolded or erected state enclose polygonal cross-section, thereby characterized in that a pair of grippers (11, 12) are provided which during the unfolding process about axes running parallel to one another at a fixed distance (27, 28) rotatable and can be transferred into grip contact with different wall parts (d, e, f, g) of the carton (C) are and that a drive device (18) is provided in order to make grip contact with the different wall parts to rotate the standing gripper individually around the associated axes and to move the edge parts in a position to one another, in which they enclose the polygonal cross-section. 2. Device for erecting flat, tubular cardboard boxes, which consist of successive articulated wall parts exist, which enclose a cross-section with a polygonal outline when the carton is erected or unfolded, characterized in that a pair of suction grippers (11, 12) are provided which during of unfolding around parallel axes (27 »28), which run at a fixed distance from one another, rotatable and with one another - / 21 00982 2/0286 directed, but not consecutive wall parts (d, e, f, g) of the cardboard box (C) can be transferred into grip contact and that a drive device (18) is provided to turn the grippers individually in a uniform direction to rotate the associated axes and to move the wall parts, until they enclose the polygonal cross-section. 3. Device according to claim 2, characterized in that that the drive device for rotating the gripper (11, 12) has a handlebar parallelogram (14) has, which is in operative connection with the grippers. 4. Apparatus according to claim 2, characterized in that the drive device is a Has handlebar assembly (15, 16), which with the grips (11, 12) is in operative connection to this to the associated Axes (27, '28) to twist and that an additional Drive device is provided in order to at least one of the grippers during a "other work section to rotate an additional axis that runs parallel to the two axes of rotation of the gripper. 5. Device for erecting flat, tubular cardboard boxes, which consist of successive, articulated wall parts exist, which enclose a polygonal cross-section in the erected or unfolded state, characterized in that an •. - / 22 009822/0286 number of gripper heads (10 is provided, each of which has a pair of grippers (11, 12) that during unfolding are rotatable about axes (27, 28) running parallel and at a fixed distance from one another and that a loading magazine (31) are provided with flat cardboard boxes (C) and a transport device (35) for the gripper heads and the gripper heads can be moved past the loading magazine (31) one after the other by the transport device, with each a gripper (11) assumes a position in which it has an end term cardboard (G) in the loading magazine (31) detected for removal, while the other gripper (12) on the loading magazine is movable past in a spaced position from the loading magazine and that a drive device is provided which acts on grippers that are in contact with opposite sides of the carton and turns them around the associated axes (27, 28) are moved to move the wall parts (d, e, f, g) of the cardboard box (C) until they reach the polygonal Enclose cross-section. 6. Apparatus according to claim 5 »characterized in that that the gripped flat cardboard box (C) before the rotation of the grippers (11, 12) about their axes (27, 28) is rotated by 90 ° with respect to its position in the loading magazine (31). 7. Apparatus according to claim 5, characterized that the drive device has a handlebar parallelogram (14) to the gripper (11, 12) 009822/0286 195776t to rotate the associated axes (27, 28). 8. Apparatus according to claim 6, characterized in that the drive device has a handlebar parallelogram (14) which with the grippers (11, 12) is linked to the associated Rotate axes (27, 28). 9. Method for erecting or unfolding flat, tubular Cardboard boxes, which consist of articulated wall parts, which after unfolding a polygonal Enclose cross-section, characterized in that initially a pair of oppositely directed Detected edge parts of the flat cardboard and then to run parallel and at a fixed distance from each other Axes are rotated until they follow the contours of the polygonal cross-section. 10. Method for successive erecting or unfolding a series of flat, tubular cardboard boxes, which consist of hinged wall parts, the when unfolded, enclose a cross-section with a polygonal outline, characterized in that that in succession only one wall part of each of the flat cardboard boxes is gripped for removal from a supply stack and the cardboard boxes thus gripped are transported a certain distance, after which during the transport - / 24 00 9 822/0286 one after the other opposite wall parts of each
Gripped cardboard boxes and the parts of the wall that were gripped in this way
Cardboard boxes are then rotated during transport about axes running parallel to one another at a fixed distance,
until they extend along the contour lines of the polygonal cross-section. 11. The method according to claim 10, characterized in that the gripped flat cardboard boxes
before rotating the wall parts around the parallel axes
be moved during transport until they lie in a plane that is at an angle of 90 ° to the plane,
in which the flat cardboard boxes are stacked. 12. The method according to claim 11, characterized in that the flat cardboard boxes for displacement only by one parallel to the axes of rotation for
Wall parts extending axis are rotated. 13. The method according to claim 11, characterized in that the carton when moving only gripped by a gripper. 14. The method according to claim 12, characterized in that the carton when moving only is grasped by a gripper. 009822/0286 15 · Device for erecting or unfolding flat, tubular Cardboard boxes, which consist of consecutive, articulated wall parts, which in the unfolded state delimit a polygonal cardboard cross-section, characterized in that a number of gripper heads are provided, each with a pair of grippers, which during unfolding around in solid Distance from one another, axes running parallel to one another are rotatable and that a loading magazine is provided, which contains flat cardboard boxes and also the gripper heads of a transport device one after the other are movable, with a device being provided which moves the last carton from the magazine while further devices are used to push this carton towards and into contact with one of the grippers, the other gripper being in a position in which it was moved beyond the magazine and physically is separated from the magazine (free) and that means is provided which cooperate with grippers that are in contact with opposite side wall parts of the carton, to rotate them around the respective axes and the sidewall parts of the cardboard up to the position along the Move outlines of the polygonal cross-section. 16. The device according to claim 15, el ad u r c h characterized in that the magazine (31) walls (29, 30) .009822 / 0286 • "26" possesses, which enclose the cardboard boxes (C) and that a movement of the last cardboard box in the magazine (31) End extension part (22) on a magazine wall (30) is used, which extends at an angle to the wall and the movement of the Cartons away from the magazine towards the gripper (11) directs. 17. The device according to claim 15, characterized * indicates that the means for moving the last carton (C) away from the magazine (31) have an arm (33), which supports one of the grippers with a rod (33) extending away from the armrest, this rod following one after the other has sliding stop (32) or finger running downwards, which come into contact with a cardboard box (C) in the magazine (31) when this gripper (11) crosses one end of the loading magazine is moved. 18. A method of successively unfolding a series of flat cardboard boxes with hinged wall panels a shape in which the cartons have a polygonal outline, characterized in that that the cartons first one after the other from a stack of a loading station up to suction contact be moved with a suction gripper, which then grips a wall part of the carton, after which the gripped carton moved along a certain path and during this movement first detected on the opposite wall part - / 27 ^; 00962270286 195778! as well as with the detected wall parts at a fixed distance parallel axes are rotated until the polygonal outline of the box is reached. 009822/0286 Empty soap