EP4041665B1 - Bag transport and bag stacking device, and method for transporting bags or bag stacks - Google Patents

Description

The invention relates to a sack transport and sack stacking device for transporting sacks or stacks of sacks and for preparing stacks of sacks for subsequent processing according to the preamble of patent claim 1, a sack manufacturing device for manufacturing sacks according to the preamble of patent claim 11 and a method according to the preamble of patent claim 12 .

After the production of unfilled sacks (empty sacks), it is necessary to make them available for subsequent processing. The individually produced sacks are usually first arranged in sheds in order to be able to transport them further with a shortened transport length. In the case of sacks made of paper, a shingled arrangement of the sacks also helps to compress them after the sack components, in particular bottom cover sheets, have been glued on. Consequently, it is first necessary to separate the shingled sacks in a shingle separating station, the separation being effected every predetermined number of sacks. This is followed by a stacking station in which the shingled sacks are conveyed against an obstacle, for example, so that the so-called sack shingle results in a stack of sacks that includes exactly the number of sacks that were previously moved from the shingled arrangement of sacks into a partial shingle were transferred. A stack of sacks is characterized in that all sacks are essentially on top of each other lie, i.e. have little or no deviation from each other in the directions in the plane of the sacks.

After creating a stack of sacks, it is necessary to check this stack and/or individual sacks from it. Before and after the inspection, the stacks of sacks are transported along a transport path. For the control itself, individual stacks of bags or even all stacks of bags are ejected from the transport path and then fed back in again. The stacks of sacks therefore leave the transport path for control purposes.

Depending on the type of subsequent processing of the sacks, it may be necessary to turn them over. For example, if the sack bodies (the areas between the bottoms) of the sacks lie in one horizontal plane and the bottoms of the sacks lie in another, parallel horizontal plane but lie above the sack bodies, it may be desirable to arrange the sacks so that the Bottoms are below the bag body. A turning station can be provided for this purpose, with which in particular a changed arrangement of the sacks can be carried out. Such a turning station can be arranged anywhere within the transport path between the stacking station and the supply station described below

At the end of the transport path there is a supply station for preparing stacks of bags for subsequent processing. Such a follow-up processing can be a renewed alignment of all the sacks to each other within a sack stack. Subsequent processing is, in particular, gripping a stack of sacks with a gripping device and depositing the stack of sacks that has been gripped on a pallet, on which other stacks of sacks may already be located.

The sack transport and sack stacking devices described are known in particular when they are arranged within sack manufacturing plants.

In such devices, the stacks of sacks arranged one after the other are fed to subsequent processing, in particular to palletizing.

Subsequent processing is often slower than bag production would allow.

The DE 197 56 122 A1 discloses a device for separating shingled plastic bags one on top of the other into a partial shingle, which are later pushed together and packed by the operating personnel.

The DE 20 22 045 A1 shows a device for forming stacks of paper and/or plastic bags.

The U.S. 2006/263194 A1 describes a device for forming and aligning stacks of sacks in order to then be able to palletize them.

The US 1586 544 A deals with the stacking of individually fed bags into a stack of bags.

The DE 617 905 C turns to the shingling of entire stacks of bags. However, the provision of the stack of bags for subsequent processing is not described.

The U.S. 5,112,041 A deals with the division of printed products arranged in scales from one scale to two scales.

The U.S.A. 4,269,557 shows a device for producing, stacking and packaging bags. Consequently, the packaging of stacks of bags is disclosed herein as downstream processing within the meaning of the present invention.

The U.S.A. 4,771,896 discloses the shingling of printed products.

The U.S. 2008/267760 A1 addresses the creation of a stack of bags from a stream of bags arranged in a shingled manner.

The DE 11 50 567 and the U.S. 3,566,754 A disclose a dividing device with which the stacks of tube pieces produced in a tube machine are divided between two or more bottom-laying machines.

The object of the present invention is therefore to propose a sack transport and sack stacking device and an associated method which enable faster downstream processing.

The object is achieved by a sack transport and sack stacking device according to the features of the preamble of claim 1, which is additionally characterized in that at least one dividing device is provided, with which a sequence of sacks arranged in a shingle, of partial shingles and/or of sack stack sequences in at least two sequences of sacks arranged in scales, partial scales and/or sequences of sack stacks can be divided.

With such a device, it is consequently possible to divide the stacks of sacks into two streams of sack stacks at the latest up to the delivery station, so that the sack stacks can be fed at least partially in parallel to subsequent processing.

The present invention can be combined particularly advantageously with a palletizing device which comprises two gripping devices in order to deposit the stack of sacks at least partially simultaneously on one or two pallets. In this way, the palletizing of stacks of sacks can also be accelerated, even with an increased performance of the bottom-laying device, without having to operate the necessary gripping devices in an accelerated manner. This is not easily possible without, for example, increasing the strength of the components involved or having to accept procedural problems.

In an advantageous embodiment, at least one elevator is provided, with which partial shingles and/or stacks of sacks can be conveyed at least partially in the vertical direction. In particular, such an elevator is arranged directly in front of the delivery station. A height conveyor is advantageous if, in particular, all of the aforementioned stations are arranged on the same level. In this case, it is advantageous to transport the stack of sacks to a specific height in order to be able to stack pallets up to a predetermined height, in particular up to a permissible height. In a first embodiment, a single elevator can be provided, with which two parallel stacks of sacks can be picked up and at least partially transported in the vertical direction. This embodiment is particularly advantageous when the divided stacks of sacks are separated in the horizontal direction transverse to their transport direction, but can be transported essentially on the same horizontal plane and also pass certain locations in the transport direction at essentially the same times.

In an alternative embodiment, two independent elevators are provided, with which a stack of sacks can be conveyed in the vertical direction independently of the infeed of a second stack of sacks. In this case, it is particularly possible to feed the stacks of sacks alternately to a delivery position within the delivery device in order to be able to feed them to post-processing one after the other. In this case, in particular, the stacks of sacks that can be fed to the different delivery positions can be placed on a pallet one after the other. In particular, a single gripping device can be sufficient in this case. This applies in particular when further steps are carried out on the stack of sacks at the ready position, for example alignment and/or lifting, in order to simplify gripping.

Irrespective of the design of an elevator, it is particularly advantageous to arrange the dividing device in front of the elevator in the transport direction of the sacks arranged in a scale, the partial scales and/or the sequence of sack stacks. In this case, the dividing device can be reached more easily in the event of malfunctions, for maintenance and also for checking the stack of sacks. In principle, however, it is also possible to arrange the dividing device after the elevator or conveyors and to integrate it, for example, in the delivery device.

The dividing device can also be arranged in front of a stream separating station or integrated into it. For example, a dividing device can be integrated into a device for producing the sacks, which, for example, places sacks that have just been produced alternately on different sequences of sacks arranged in a shingled manner. If the dividing device is integrated in the shingle separation station, conveyor belts can be provided which can be pivoted in the horizontal and/or vertical direction and alternately feed the partial shingles to different bag stacking stations.

Of course, the dividing device can be integrated in the stacking station. In particular, it is possible for the dividing device to be integrated in the stacking station, with sliding devices preferably being provided with which stacks of sacks can be displaced obliquely or perpendicularly or horizontally to their previous direction of movement. Provision can thus be made for the stacks of sacks formed to be fed alternately to different transport devices which transport the stacks of sacks to the subsequent stations. For this purpose, at least one lifting device can be provided in the stacking station, which in particular separates two successive stacks of sacks from one another in the vertical direction. In addition or as an alternative, a lateral displacement device can be provided, which in particular separates two successive stacks of sacks from one another in the horizontal direction.

The dividing device can also follow the stacking station in the transport direction of the stack of sacks and this can also include a shifting device for shifting stacks of sacks in the horizontal and/or vertical direction. The dividing device can be arranged upstream of the control station and/or the turning station.

At least some of the stations, which are arranged downstream of the dividing device, can be provided in duplicate in order to be able to process the stacks of bags at the necessary increased speed. It's also in In this case it is also possible to transport the stacks of sacks to the different stations at different speeds.

An advantageous embodiment of the invention provides for the dividing device to be integrated in the control station, with the control station comprising shifting devices with which stacks of sacks can be shifted from an original transport path at an angle or perpendicular to the original direction of movement. As already described at the outset, the stacks of sacks are ejected from the original transport path in a control station. This is usually done with slides, but any displacement devices can be provided in a device according to the invention. In a control station of a device according to the invention, a controlled stack of bags is no longer moved back to the original transport path, as is known from the prior art, but to a modified transport path, so that different stacks of bags can be assigned to different transport paths after the check. In this way, the necessary shifting of the stack of sacks can be used in a time-saving manner in order to distribute the stack of sacks to different transport paths.

Furthermore, in an advantageous embodiment of the invention, it can be provided that the dividing device comprises at least one lifting device, with which the at least two sequences of sacks arranged in a shingle, of partial shingles and/or of sack stack sequences can be divided onto different transport paths that are at least partially vertically spaced. Such a lifting device is comparable to an elevator that can control different levels. The transport paths of different stacks of sacks can thus be branched off in a simple and space-saving manner.

In a further embodiment of the invention, it is advantageous if at least some of the stations downstream of the dividing device are provided in duplicate, with the transport width for sequences of shingled sacks, partial shingles and/or sack stack sequences in these stations have the same dimensions. Consequently, any division of the sack stacks or partial scales between the two stations is possible.

In another embodiment, larger sized bags can be transported and stacked. The dimensions of the sacks depend on the format range of the sack-making device. However, fewer stacks of sacks can be placed on a standardized pallet for large sacks. In this case, it is advantageous if at least some of the stations downstream of the dividing device are provided in duplicate, with the transport width for sequences of shingled sacks, partial shingles and/or sack stack sequences in these stations each having a different dimension. In particular, a large transport width and a small transport width can be made available, with the large transport width being matched to the bag-making device and its largest format range. In the case of large bags, the operation of the dividing device and one station each can be dispensed with, which leads to greater efficiency. The dividing device and all stations are only to be operated when producing sacks with a sack shape that matches the small transport width.

• einer Schlauchbildungseinrichtung zum Bilden eines Schlauches aus der Papierbahn und der optionalen Kunststoffbahn
• einer Trennvorrichtung zum Trennen des Schlauches in Schlauchstücke
• einer Bodenlegeeinrichtung zum Anformen wenigstens eines Bodens an jeweils ein Schlauchstück
• eine Sacktransport- und Sackstapeleinrichtung zum Bilden, Transportieren und Bereitstellen von Säcken und Sackstapeln
• Palettiereinrichtung, zur Anordnung bereitgestellter Sackstapel auf Paletten,

welche sich dadurch auszeichnet, dass sie eine die Sacktransport- und Sackstapeleinrichtung nach einem der Ansprüche 1 bis 10 ausgebildet ist. Mit einer solcher Sachherstellvorrichtung werden die gleichen Vorteile erzielt, die bereits im Zusammenhang mit der erfindungsgemäßen Sacktransport- und Sackstapeleinrichtung erreicht werden.The above-mentioned object is additionally achieved by a sack manufacturing device for manufacturing sacks from at least one paper web and optionally from at least one plastic web

• a tube forming device for forming a tube from the paper web and the optional plastic web
• a separating device for separating the hose into hose pieces
• a bottom laying device for molding at least one bottom onto a respective piece of tubing
• a sack transport and sack stacking device for forming, transporting and providing sacks and sack stacks
• Palletizing device, for arranging provided stacks of sacks on pallets,

which is characterized by the fact that it is a the sack transport and sack stacking device is designed according to one of claims 1 to 10. The same advantages are achieved with such a material manufacturing device as are already achieved in connection with the sack transport and sack stacking device according to the invention.

• mit einer Schuppentrennstation geschuppt angeordneten Säcken in Teilschuppen mit jeweils einer vorbestimmten Anzahl an Säcken aufgeteilt wird,
• mit einer Stapelstation Sackstapel aus den Säcken einer Teilschuppe gebildet wird,
• in einer Kontrollstation Sackstapel und/oder einzelne Säcke in Sackstapeln kontrolliert werden
• mit einer Wendestation Sackstapeln optional gewendet werden
• mit einer Bereitstellungsstation Sackstapeln für eine Nachfolgebearbeitung bereitgestellt werden

gelöst, bei dem mit wenigstens einer Aufteileinrichtung eine Abfolge von geschuppt angeordneten Säcken, von Teilschuppen und/oder von Sackstapelabfolgen in zumindest zwei Abfolgen von geschuppt angeordneten Säcken, von Teilschuppen und/oder von Sackstapelabfolgen aufgeteilt werden.Finally, the above object is achieved by a method for transporting sacks or stacks of sacks and for providing stacks of sacks for subsequent processing, in which

• sacks arranged in scales are divided with a stream separating station into sub-streams, each with a predetermined number of sacks,
• with a stacking station, a stack of sacks is formed from the sacks of a sub-scale,
• sack stacks and/or individual sacks in sack stacks are checked in a control station
• can optionally be turned with a turning station for stacking sacks
• be provided with a delivery station sack stacks for subsequent processing

solved, in which a sequence of scaly arranged sacks, partial scales and/or sack stack sequences are divided into at least two sequences of scaly arranged sacks, partial scales and/or sack stack sequences with at least one dividing device.

This results in the same advantages as have already been described in connection with a sack transport and sack stacking device according to the invention and a sack manufacturing device according to the invention.

Further advantages, features and details of the invention emerge from the following description, in which various exemplary embodiments are explained in detail with reference to the figures. The object of the present invention is alone defined in the claims.

Fig. 1

Eine Sacktransport- und Sackstapeleinrichtung gemäß dem Stand der Technik

Fig. 2

Eine erste Ausführungsform der Erfindung mit einer separaten Aufteileinrichtung

Fig. 3

Eine weitere Ausführungsform der Erfindung mit gleich breiten Folgestationen

Fig. 4

Eine weitere Ausführungsform der Erfindung mit unterschiedlich breiten Folgestationen

Fig. 5

Eine doppelte Ausführung aller Folgestationen

Fig. 6

Eine Schuppentrennstation zur Aufteilung von Teilschuppen

Fig. 7

Eine weitere Schuppentrennstation zur Aufteilung von Teilschuppen

Fig. 8

Eine Kontrollstation mit integrierter Aufteileinrichtung

The individual figures show:

1

A bag transport and bag stacking device according to the prior art

2

A first embodiment of the invention with a separate dividing device

3

Another embodiment of the invention with equally wide follower stations

4

Another embodiment of the invention with slave stations of different widths

figure 5

A duplicate execution of all subsequent stations

6

A shingle separation station for dividing partial shingles

7

Another scale separation station for dividing partial scales

8

A control station with an integrated dividing device

The figure 1 shows a bag transport and bag stacking device 1 according to the prior art. An imbricated separating device (10) is shown, which is symbolized by an indication of sacks 11 arranged in an imbricated manner. The stacking station 20 ensures that the sacks arranged in a shingled manner are stacked, with the sacks in particular being pushed together. This is represented by the arrow 21 and the obstacle 22 running transversely thereto. The stack of sacks formed in this way, which is not shown, is then guided to the turning station 30 and turned if necessary. This is symbolized by the arrow 31. This involves turning around an axis that lies in the plane of the bag body. In particular, the bag bodies are aligned essentially horizontally in relation to the earth coordinates, so that the turning axis is also aligned horizontally. It closes the Control station 40, in which a stack of sacks is discharged from the transport path (represented by the arrow 41) and reintroduced (arrow 42) after the control. An optional elevator 50 is capable of conveying stacks of sacks, which are usually conveyed horizontally, in a vertical direction, so that the stacks of sacks can reach the provision station 60 arranged at an elevated level. The conveying direction of the stack of sacks in the elevator is indicated by the arrow 60 . The stacks of sacks are made available for further processing in the supply station 60 . The provision has been visualized by Kreis 61. In particular, if the further processing involves palletizing stacks of sacks, the stacks of sacks can be aligned in the delivery station 60 and can be lifted by a lifting device from a transport device provided within the delivery device. In this case, it is possible without any problems and, above all, almost without errors to take hold of the stack of sacks by means of a gripping device.

The supply station can be followed by a further processing device 70, which is designed in particular as a palletizing station. In the prior art, such a palletizing station comprises a gripping tool which can be moved into the area of the delivery station in order to grip individual stacks of bags. These are then placed on a pallet according to a placement pattern stored in the associated control device.

In the following descriptions of exemplary embodiments according to the invention, reference is made to the features just described figure 1 Reference is made to the extent that these features do not deviate from the scope of the invention.

The figure 2 now shows a first embodiment of the invention, in which not only a dividing device 80 is provided, but also the order of stations has been partially changed. In detail, it is provided in this exemplary embodiment to provide the control station 40 along the transport path behind the stacking station 20, to which the optional elevator conveyor is directly connected. It now closes Splitting device 80, with which the successive stacks of sacks can be divided into two independent product paths, so that the manipulation of the stack of sacks in the following stations can be carried out at least partially at the same time. Two turning stations 30 are provided behind the dividing device 80 as seen in the direction of transport. For example, a stack of sacks can already be turned if a previously turned stack of sacks has not yet left the turning station. The turning of sack stacks is thus accelerated. Correspondingly, two provision devices 60 follow, which in turn partly work in parallel in order to prepare the stack of sacks for subsequent processing. Subsequent processing can in turn take place in further processing device 70 . If this is in turn designed as a palletizer, it preferably comprises two gripping devices, so that palletizing can also take place here at increased speed. In order to be able to increase the overall performance of the sack transport and sack stacking device 1, it is advantageous, in addition to the provision of a dividing device 80, to operate the stations 10, 20, 40 and 50 at a higher operating speed than is the case in the prior art.

The figure 3 shows another embodiment of the invention. Here, the individual empty sacks produced in a sack manufacturing device are each assigned to one of two rows of shingled sacks that are independent of one another, so that two shingled streams are present. Accordingly, provision is made for two shingle separation stations 10 and two stacking stations 20, which can work in parallel in terms of time. If processing takes place at the same time, it is sufficient to provide a single turning station 30, which can simultaneously turn two stacks of bags arranged next to one another. The same applies to the control station 40 and the elevator 50. In the delivery station 60, however, the two stacks of bags can again be moved at different speeds, since it should not generally be possible to place two stacks of bags on a pallet at the same time without collisions between the gripping devices in to take purchase. For this reason are in the figure 3 two delivery stations 60 shown. Making one Speed difference can, however, also be generated by the gripping devices themselves.

The embodiment according to figure 4 resembles that of figure 3 , but the dual stations have 10, 20 and 60 dimensions, which are tailored to different bag formats. The smaller stations can be tailored to standard sack formats, which represent a large part of the production volume, so that sacks of these formats can be processed by both of the double stations. As a rule, sacks of larger sack format cannot be palletized as quickly as smaller sacks. In this case, it is therefore sufficient to only operate the larger of the duplicate stations.

The figure 5 also shows an embodiment which is based on the embodiment of FIG figure 3 based. The difference is that here the station 30 and/or the station 40 and/or the station 50 is also present twice for the independent processing of bag stacks. In this way, the stacks of bags can be processed at different speeds in both transport paths, so that different arrival times of stacks of bags that were originally at least partially produced simultaneously can result at the delivery devices 60 . This embodiment is particularly advantageous when only part of the stack of sacks has to be turned, so that the stack of sacks that do not have to be turned can simply be transported through the relevant turning station, which can be done more quickly because the time required for turning is saved .

In the figure 6 a stream separating station 10 is shown which is capable of dividing sacks arranged in a stream into two transport paths. First, the sacks 11 arranged in a shingle are fed to the station 10 via at least one conveyor belt 12 . After a partial flake 13 has been separated, it is placed on a further conveyor belt 14. A further limiting belt 15 is arranged above this conveyor belt 14 and can run around two rollers 17, 17'. The axes of rotation of these rollers 17, 17' are arranged orthogonally to the surface of the conveyor belt 14 and in particular vertically. Additionally the limiting strap is pivotably mounted about a pivot axis 16 which is parallel to or preferably on the axis of rotation of the roller 17. In this way, a partial stream can, for example, be guided further to a stacking station 30 in its original transport direction (limiting belt not pivoted), or be guided to a second stacking station with a changed transport direction. In the latter case, the limiting strap is pivoted by the angle a. This division of partial shingles onto different transport paths is represented by the diverging arrow 18 .

The figure 7 shows a further embodiment of a stream separating station 10. Two conveyor belts 14 and 14' are provided, which can be displaced together relative to the plane of the conveyor belts, preferably transversely thereto (double arrow 19). In each case, one conveyor belt is positioned in such a way that a partial shingle can be transported further in its transport direction. When the partial shingle has completely reached the conveyor belt 14 or 14', both conveyor belts are shifted so that the other conveyor belt assumes the position of the first conveyor belt. This can now pick up the subsequent shingle section, while the first conveyor belt feeds the shingle section to a stacking station. When the other conveyor belt has completely picked up the partial shingle and one conveyor belt has fed the partial shingle to the stacking station, the conveyor belts can be moved back together so that the process described is repeated.

The scale separation stations 10 according to the figures 6 and 7 can, for example, with the embodiments according to Figures 3, 4 and 5 are combined, in which it then replaces the duplicate shingle separation stations 10.

The figure 8 FIG. 12 shows another embodiment of the invention in which a dividing device is integrated in the control station 40. FIG. In such a control station, shifting devices are provided for shifting the stack of sacks from the original transport path, which is indicated by the angled arrows 41, 41'. After checking the Sack stacks, these are shifted to transport paths with the same or other shifting devices, which differ from the original transport paths. In particular, stacks of sacks that have been shifted according to arrow 41 are then shifted to a first transport path (arrow 42), while stacks of sacks that have been shifted according to arrow 41' are then shifted to a second transport path (arrow 42'). It can connect two separate elevators and two separate, as in the figure 8 is shown. Reference List 1 Bag transport and bag stacking device 10 shed separation station 11 bags 12 conveyor belt 13 partial scale 14 14' conveyor belt 15 Boundary Band 16 pivot axis 17 17' role 18 19 double arrow 20 stacking station 21 Arrow 22 obstacle 30 turning station 31 Arrow 40 control station 41 41` Arrow 42 42' Arrow 50 elevator 60 deployment station 61 Circle 70 further processing device 80 dividing device

Claims (12)

1. A bag transport and bag stacking device (1) for transporting bags (11) or bag stacks and for providing bag stacks for follow-up processing, having

   - a layering separation station (10) for dividing layered bags (11) into subgroups of layered bags (13) each with a predefined number of bags (11),

   - a stacking station (20) for forming a bag stack from the bags (11) of a subgroup of layered bags (13),

   - a monitoring station (40) for monitoring bag stacks and/or individual bags (11) in bag stacks,

   - a turning station (30) for optionally turning bag stacks,

   - a provisioning station (60) for providing bag stacks for follow-up processing,

   characterized in that
   at least one dividing device (80) is provided, with which a sequence of layered bags (11), of subgroups of layered bags (13) and/or bag stack sequences can be divided into at least two sequences of layered bags, subgroups of layered bags and/or bag stack sequences.
2. The bag transport and bag stacking device (1) according to claim 1,
   characterized in that
   at least one vertical conveyor (50) is provided, by means of which subgroups of layered bags (13) and/or bag stacks can be conveyed at least partially in the vertical direction.
3. The bag transport and bag stacking device (1) according any one of the preceding claims,
   characterized in that
   the dividing device (80) is arranged upstream of at least one of the following stations or is integrated into at least one of said stations:

   • Layering separation station (10)

   • Stacking station (20)

   • Monitoring station (40)

   • Turning station (30)

   • Vertical conveyor (50)

   • Provisioning station (60)
4. The bag transport and bag stacking device (1) according any one of the preceding claims,
   characterized in that
   the dividing device (80) is integrated into the layering separation station (10), wherein subgroups of layered bags (13) are produced, which are arranged alternately on different transport paths.
5. The bag transport and bag stacking device (1) according any one of the preceding claims,
   characterized in that
   the dividing device (80) is integrated into the monitoring station (40), wherein the monitoring station (40) comprises sliding devices, by means of which bag stacks can be moved out of an original transport path obliquely or perpendicularly to the original direction of movement.
6. The bag transport and bag stacking device (1) according any one of the preceding claims,
   characterized in that
   the dividing device (80) is integrated into the stacking station (20), wherein preferably sliding devices are provided, by means of which bag stacks can be moved obliquely or perpendicularly or horizontally to their previous direction of movement.
7. The bag transport and bag stacking device (1) according any one of the preceding claims,
   characterized in that
   the dividing device (80) comprises a vertical device (50), by means of which the at least two sequences of layered bags (11), of subgroups of layered bags (13) and/or of bag stack sequences can be divided on different at least partially vertically spaced part transport paths.
8. The bag transport and bag stacking device (1) according any one of the preceding claims,
   characterized in that
   the dividing device (80) comprises a vertical device (50), by means of which the at least two sequences of layered bags (11), of subgroups of layered bags (13) and/or of bag stack sequences can be divided on different at least partially horizontally spaced part transport paths
9. The bag transport and bag stacking device (1) according any one of the preceding claims,
   characterized in that
   at least some of the stations (20, 30, 40, 50, 60, 70, 80) arranged downstream of the dividing device (80) are provided twice, wherein the transport width for sequences of layered bags (11), of subgroups of layered bags (13) or of bag stack sequences each has the same dimension in these stations.
10. The bag transport and bag stacking device (1) according any one of the preceding claims,
    characterized in that
    at least some of the stations (20, 30, 40, 50, 60, 70, 80) arranged downstream of the dividing device (80) are provided twice, wherein the transport width for sequences of layered bags (11), of subgroups of layered bags (13) or of bag stack sequences each has a different dimension in these stations.
11. A bag production device for producing bags (11) from at least one paper web and optionally from at least one plastic web with

    • a hose-forming device for forming a hose made of the paper web and the optional plastic web

    • a separating device for separating the hose into hose pieces

    • a bottom-laying device for forming at least one bottom on in each case one hose piece

    • a bag transport and bag stacking device (1) for forming, transporting and providing bags (11) and bag stacks

    • palletizing device, for the arrangement of provided bag stacks on pallets

    characterized in that
    the bag transport and bag stacking device (1) is designed according to any one of claims 1 to 10.
12. A method for transporting bags or bag stacks and for providing bag stacks for a follow-up processing, in which

    - with a layering separation station (10) layered bags (11) are divided into subgroups of layered bags (13) each with a predetermined number of bags (11),

    - with a stacking station (20) a bag stack is formed from the bags (11) of a subgroup of layered bags (13),

    - in a monitoring station (40) a bag stack and/or individual bags (11) in bag stacks are monitored

    - with a turning station (40) bag stacks are optionally turned,

    - with a provisioning station (60) bag stacks are provided for follow-up processing

    characterized in that
    with at least one dividing device (80) a sequence of layered bags (11), of subgroups of layered bags (13) and/or of bag stack sequences are divided into at least two sequences of layered bags, subgroups of layered bags and/or bag stack sequences.

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