EP2042435B1 - Device for fitting sacks on a filling nozzle of a packaging machine - Google Patents

Abstract

The device (10) has a storage table (7) and a transport device (4) for transporting a sack bundle (3) from a transfer position to a receiving position of the table. The transport device comprises a belt drive (13) for transport of the sack bundle, where translational displacement (11) and predetermined vertical height (12) of a sack (2) are suppressed by the transport device. The belt drive is formed in a transition region in a form of fork that includes ends, which project outwardly, and intermediate spaces are formed between the fork ends. An independent claim is also included for a filling system comprising a filling nozzle.

Description

The invention relates to a device for attaching bags and in particular a device for attaching valve bags to a filler neck of a packaging machine.

In such a device bags are stored on the slip-on device to ensure a continuous and trouble-free operation of the packing machine. For attaching a valve bag is separated from the stack. Then the valve is opened, the bag accelerated and the bag is attached to the filler neck.

The equipment used for such a purpose has a task for empty bags or bag bundles, which is regularly supplied manually by an operator with new bags. For this purpose, the task area is arranged at an ergonomically comfortable height for the operator to facilitate the refilling of the bags.

Modern packaging machines achieve filling capacities of a few thousand bags per hour, so that a considerable number of bags must be added. On the transport from the task area to the actual Aufsteckvorgang a height difference must be overcome regularly, since the height of the filler neck, on which the valve bag is attached, of the Length of the bag material used depends. This length is specified regularly in the design planning of the plant and depends on the intended application and the filling material used. For example, filler neck heights of, for example, 1 m to 1.60 m are possible and customary filler neck heights. This means that from the task area of the new bags to the filler neck not only a translational path difference, but also a height difference must be overcome, since the task height for the empty bag bundles should comply with ergonomic guidelines and is usually lower and is for example about 80 cm ,

At a fill rate of e.g. Therefore, 3,600 bags per hour must be sacked onto a filler neck per second.

In addition, the bag must be singulated from the bag bundle, i. the bag valve must be opened and the bag accelerated so that it reaches the filler neck at the appropriate time. In order to be able to reliably ensure such a course of movement over hours, days, months and years, high demands are placed on the components involved. At the same time, due to the mass production of the filled goods, the cost side in the construction must be considered.

As drive means for overcoming the different routes, lifting cylinders have prevailed in the prior art since they can respond with high acceleration values without any appreciable delay, so that a fast translational reaction is generated when a lifting cylinder is activated. To overcome the different translational path differences therefore several different drives were used in the prior art, for example, a bag bundle is spent by a bag magazine to the beginning of a tray table of a slip-on, whereupon the bag bundle is transferred by means of a lifting cylinder drive on the storage table. Subsequently, in this prior art, the bag bundle is moved translationally to a lifting element, with which it is then in turn lifted to the intended height. Once there, a sack must be grasped, lifted and the sack valve opened at the speed of the power stroke before the sack is slipped onto the filler neck.

When changing a bag bundle, the lifting element must first be lowered and then a blank bag bundle with the Hubzylinderantrieb be moved translationally on the lifting element, whereupon the lifting element is raised with its associated lifting cylinder again. This and the subsequent attachment of the first bag of the new bag bundle must be done within a regular working cycle. Subsequently, the sacks are seized individually and put on until the next bag bundle has to be fetched.

The well-known state of the art works, but requires a high material and financial commitment and leaves at a expected further increase in filling performance only little leeway.

It is therefore an object of the present invention to provide a device for attaching bags available, which achieves the same reliability with less effort.

This object is achieved by a device having the features of claim 1. Advantageous embodiments of the invention are the subject of the dependent claims. Further advantageous features and characteristics of the invention are given in the following description.

The inventive device for attaching bags is provided in particular for attaching valve bags to a filler neck of a packing machine. The device according to the invention comprises a delivery table and a transport device for transferring a bag bundle in a transfer region and for transporting it to a receiving position on the delivery table, in which a bag can be grasped individually in order to pick up the bag and then place it on. According to the invention, the transport device has a drive device for transporting the bag bundles, with which both a translatory distance and a predetermined height difference can be bridged, the transport device having a belt drive. The belt drive in the transfer area in a top view is fork-shaped with outwardly projecting fork ends and intermediate spaces. The belt drive has at least two parallel provided on the delivery table belt.

The invention has many advantages. A significant advantage of the invention is that both a horizontal distance and a vertical distance can be bridged with a common drive device, so that both a horizontal and a vertical distance can be overcome by activating a single transport device. This is a significant advantage, since during the activation of the drive device no safety times between the individual movements must be maintained in order to avoid collisions or the like. In the invention, the drive is activated and automatically a horizontal and a vertical distance is overcome. Due to the fork-shaped shape, a flexible and easy transfer of a bag bundle is possible. Subsequently, the sack bundle is transported further by means of the belt drive.

Another great advantage of the present invention is that instead of a plurality of lifting cylinders only one common Drive is used, so that a considerable financial effort can be saved. Since the drive is used to transport bag bundles and since not several successive translational movements have to be coordinated with each other, the reaction speed of a belt drive is completely sufficient and even surpasses the technology used hitherto.

In a particularly advantageous embodiment of the invention, the belt of the belt drive at least one outwardly projecting driver to take a bag bundle on the storage table. Not only a sack can be transported by the carrier standing in particular radially outward, but a sack bundle or a sack stack can be transported further, which comprises a large number of sacks. For example, a sack bundle may include 10, 15, 20, 30, or even 40 sacks. The exact number depends on the respective conditions of use and the bag material used. It should be noted that valve bags in the region of the valve regularly have a greater thickness, so that the bags are not only slightly thicker in the bottom and top area than in the central area of the bags, but that the bags in the valve area are also slightly thicker. This leads to a large number of stacked bags leads to a skew storage, so that have proven in preferred applications sack numbers of about 10 to 30 per bag bundle.

In preferred embodiments of the invention, a blank bag magazine is provided, which comprises a task area, on which bag bundles can be fed in a predetermined task height. In this case, the empty bag magazine is suitable and intended to transport bag bundles from the task area to the transfer position. The task height is a comfortable task height for the operator, because during the course of a day In the case of the plants, which are typically operated all day long, very considerable sack numbers have to be added, so that a loading position which is comfortable and ergonomic for the operator is important.

Particularly preferably, the empty bag magazine is designed as an empty bag cell belt, which has in each case a cell for receiving a bag bundle between radially outwardly projecting tines. The empty bag cell band has in this way a plurality of successively arranged cells, which are each separated by a plurality of parallel radially outwardly extending prongs. The empty bag cell belt is suitable for this purpose and intended to transfer in particular clocked mode of operation in each case one bag bundle per cycle to the transport device in the transfer position. This means that at each cycle of the empty bag cell band, a bag bundle is deposited at the transfer position.

Such empty bag cell belts as empty bag magazine have considerable advantages, since each of the spatially separated cells task areas for bag bundles are provided so that different thickness areas of the valve bags do not adversely affect the storage of a variety of bags, since only a few bags superimposed are arranged.

Preferably, the storage table has a flat receiving surface at the receiving position and an inclined transfer region at the transfer position. At the inclined transfer area, the sacks or the bag bundle are taken from the empty bag magazine.

Particularly preferably, a particularly flat waiting area is provided between the transfer area and the receiving area, ie in front of the receiving area, to which a bag bundle is transportable with the transport device, while on the receiving surface in the receiving position arranged bag bundle is processed. In this case, the waiting area is particularly preferably provided in parallel and directly adjacent to the receiving surface, wherein between the receiving surface and the waiting area and a small distance of, for example, a half or a bag length can be provided.

This development offers particular advantages, since when changing a bag bundle, the following bag bundle is already arranged in the waiting position on the waiting area, so that a new sack bundle is provided by a slight further transport from the waiting position to the receiving position. In this embodiment of the invention, it is not necessary to successively controlled several lifting cylinder and controlled in dependence on each other to move to spend a new bag bundle in the receiving position.

In this development, after the transfer of a bag bundle in the receiving position, the next bag bundle in the transfer area in the transfer position and taken directly to the waiting position spent on the waiting area, while at the same time already in the receiving position located bag bundle is processed. This means that for the transport of a new bag bundle in the waiting position almost the entire processing time of a bag bundle is available, so that the speed of the transfer of the bag bundle from the transfer position to the waiting position comparatively no high demands. In contrast, in the prior art, two controlled vertical movements and one controlled horizontal movement had to be executed successively in a controlled manner within a single working cycle.

In developments of the invention, the receiving position for receiving a bag from the storage table is arranged at a predetermined receiving height, wherein the receiving height regularly is significantly higher than the task height of the task area is provided because the receiving height that is dependent on the height of the filler neck, on which the valve bag is to be plugged. Therefore, the receiving height is taken into account in the structural design of the machine, since this is practically a plant constant. Regularly, the height difference between the receiving height and the task height at the empty bag cell band is at least 20 or even 80 cm. Also 10 cm and other values are possible.

In particularly preferred developments of the invention, the delivery table has slots through which the drivers protrude over the surface upwards when the carriers are arranged in corresponding areas of the delivery table. This means that a bag bundle rests on the tray table, while it is taken along with the drivers projecting through the slots in the transport direction.

In a preferred embodiment, four parallel belts are used, but always driven simultaneously.

In particular, in the region of the transition surface of the delivery table or in the subsequent area, the belts are each stored separately and individually. In particular, the bearings of the individual belts are not connected to each other with a common shaft, so that the belt drive is fork-shaped in the transfer area in a plan view, wherein the individual belts protrude as tines of the fork shape of the tray table towards the empty bag magazine. This means that the free ends of the tines of the empty bag magazine can dive between the individual belts of the belt drive and mesh with it, so that in this area a beneficial Overlap of the tray table with the empty bag cell band is present.

Furthermore, it is preferred that the prongs of the empty bag cell belt mesh with interspaces of the delivery table provided between the individual belts.

Such embodiments offer very considerable advantages and lead to a further saving in mechanically moved components. The transfer of a valve bag bundle from the empty bag cell band to the delivery table functions in such a configuration such that the empty cell cell band shifts one cell further, so far that the tines of the associated cell dive between the belts or into the interstices of the delivery table. Thus, the valve bag bundle located in the cell of the empty cell cell band rests on the belt extending from the delivery table in the form of a fork. By activating the driver located in a rear and lower region of the belt drive, the bag bundle can now be gripped from below behind and the carriers on the belt drive belt carry the bag bundle freshly received from the empty bag cell band in the direction of the receiving position. During the transfer, both a translational path difference in the plane and a height difference are overcome. In this embodiment, yet another conventional way in the art is saved, since a separate transfer mechanism is no longer necessary by the meshing components.

In a further preferred embodiment of the invention, each belt of the belt drive is individually clamped separately via its own tensioning roller. In principle, although a tensioning device could be provided for all belts, but since the individual belts used can have different length tolerances, such a common Clamping device not necessarily to the desired reliability.

In an advantageous development, a plug-on head is provided, which serves for opening the valve and for attaching the bag. In this case, the plug-on head in particular a gripper system for receiving a bag and an acceleration system for accelerating the opened bag to aufzustecken the bag on a filler neck of a filling or aufzuschießen.

The embodiments described so far relate in particular to a linear design, in which the empty bag magazine and the plug-on machine are set up in line, which means that the empty bag magazine is aligned with the transport direction of the belt drive. Depending on the available space, it may also be necessary to arrange the empty bag magazine at an angle to the transport device of the belt drive.

In an advantageous embodiment of such an angled installation, a turntable is provided, which is pivotably arranged between a first and a second pivot position and which transfers a bag bundle into the transfer position during the pivoting of the turntable.

Preferably, the turntable in a first rotational or pivotal position is adapted to take over a bag bundle of the empty bag magazine, while in the second rotational or pivotal position is suitable to transfer the bag bundle in the transfer position.

In particularly preferred embodiments, the turntable on spaces or slots, which mesh in the first rotational or pivotal position with the tines of the empty bag magazine. This is a small distance of the turntable to Empty bag magazine and a simple transfer of the bags allows.

Preferably, a pivoting element is further provided, which has in the first rotational position with the interstices or slots of the turntable meshing driver to transfer a bag bundle of the empty bag magazine on the turntable.

More preferably, the slots of the turntable in the second rotational position are aligned with the drive belts so that the drivers can pass through the slots of the turntable from below to transport a sack bundle. This embodiment is particularly advantageous because the slots are aligned in one rotational position with the tine of the empty bag magazine and in the other rotational position with the belts of the belt drive.

In order to enable a safe pivoting of the turntable, the belt may be provided in the region of the turntable pivot down so that the transport device in the region of the turntable has a pivotable about a horizontal axis transport unit, which from an upper pivot position for transporting the bag bundle in a lower Pivoting position for pivoting the turntable is pivotable. Alternatively, it can also be provided that the belt run in the region of the turntable below the surface of the turntable so that rotation of the turntable is possible if the drivers are not in the slots.

Further advantages and possible applications of the present invention will become apparent from the embodiments, which will now be explained with reference to the accompanying figures.

Fig. 1

eine perspektivische Ansicht der erfindungsgemäßen Vor- richtung in einer ersten Ausgestaltung;

Fig. 2

eine vergrößerte perspektivische Darstellung des Abla- getisches nach Figur 1 mit einem Sackbündel in der Übergabeposition;

Fig. 3

eine vergrößerte perspektivische Darstellung des Abla- getisches mit einem Sackbündel in der Aufnahmeposition und einem Sackbündel in der Warteposition;

Fig. 4

eine Aufsicht auf den Ablagetisch des Ausführungsbei- spiels nach Figur 1;

Fig. 5

eine perspektivische Ansicht des Übergabebereichs des Ausführungsbeispiels nach Figur 1;

Fig. 6

eine perspektivische Ansicht eines weiteren Ausfüh- rungsbeispiels der erfindungsgemäßen Vorrichtung, welche zu einer gewinkelten Aufstellung geeignet ist;

Fig. 7

eine schematische Seitenansicht der Vorrichtung nach Figur 6 mit einem Sackbündel der Übergabeposition;

Fig. 8

eine schematische Seitenansicht der Vorrichtung nach Figur 6 mit einem Sackbündel auf dem Drehtisch;

Fig. 9

eine Aufsicht der Vorrichtung nach Figur 7;

Fig. 10

eine Aufsicht auf die Vorrichtung nach Figur 8;

Fig. 11

ein schematische Seitenansicht der Vorrichtung nach Fi- gur 6 bei der Übernahme eines Sackbündels;

Fig. 12

eine Aufsicht auf die Vorrichtung nach Figur 11; und

Fig. 13

eine stark schematische Aufsicht auf eine Packmaschine mit einer erfindungsgemäßen Vorrichtung.

Show:

Fig. 1

a perspective view of the device according to the invention in a first embodiment;

Fig. 2

an enlarged perspective view of the unloading after FIG. 1 with a bag bundle in the transfer position;

Fig. 3

an enlarged perspective view of the Abla- table with a bag bundle in the receiving position and a bag bundle in the waiting position;

Fig. 4

a view of the tray table of Ausführungsbei- game after FIG. 1 ;

Fig. 5

a perspective view of the transfer area of the embodiment according to FIG. 1 ;

Fig. 6

a perspective view of another embodiment of the inventive device which is suitable for an angled installation;

Fig. 7

a schematic side view of the device according to FIG. 6 with a bag bundle of the transfer position;

Fig. 8

a schematic side view of the device according to FIG. 6 with a sack bundle on the turntable;

Fig. 9

a top view of the device according to FIG. 7 ;

Fig. 10

a view of the device after FIG. 8 ;

Fig. 11

a schematic side view of the device according to Figure 6 in the acquisition of a bag bundle;

Fig. 12

a view of the device after FIG. 11 ; and

Fig. 13

a highly schematic plan view of a packing machine with a device according to the invention.

In FIG. 13 a system is shown, which has a packing machine 1 for filling products in bags 2, a slip-on 10 and a discharge belt 70 for transporting the filled valve bags 2. The packing machine 1 is designed here as a rotary filling system with a plurality of filling nozzles 34, onto which the valve sacks 2 to be filled are plugged with the slip-on machine 10.

The packing machine 1 rotates in the direction of rotation 46, while the plugged valve bags 2 are filled. The ready-packed valve bags 2 are deposited on the discharge belt 70 and thus transported away.

In FIG. 1 is a perspective view of a device according to the invention and as a plug-in machine 10 is shown, which here has a designed as empty bag cell magazine empty bag magazine 30. A plug-on head 20 is provided to individually grasp the sacks 2 of a sack bundle 3, lift them, open the respective valve and push the sacks onto a filler neck of a packing machine.

Typical packaging machines for filling powdery materials into valve bags achieve high filling capacities of up to a few 100 sacks per filling nozzle and hour. This means that a rotating plant with several filling nozzles can pack some 1000 bags per hour. This number represents a considerable challenge for a bagging machine, since in particular for a rotating packing machine a single bag-peg must fit all bags, resulting in a Sackaufsteckrate, which results from the number of filler neck multiplied by the filling rate per filler, if you do not have one want to use second slip-on, which naturally leads to correspondingly increased costs.

The inventive device 10 has for temporary storage of the bag bundle 3, the empty bag cell magazine 30 with the individual compartments 31, which are separated by arranged on the conveyor belt of the empty bag magazine tines 33. Since a plurality of cells 31 is provided in such a way, in each of which a bag bundle of, for example, 10 to 30 bags is set, there is a good possibility of temporarily storing the bags even in view of the possible high filling rate.

The operator fills the sacks or bag bundles 3 in the feed area 18. In order to allow him a comfortable and ergonomic operation, the task area on a height or task height 32, which does not overexert the operator even with constant refilling.

In the transport direction is followed by the empty bag cell band 30 of the tray table 7, to the receiving surface 6 to be filled and aufzusteckenden bags 2 must be transported. For this purpose, the empty bag cell magazine 30 is operated in a clocked manner, so that when the system is put into operation a first bag bundle 3 is deposited on the transfer area 35 at the transfer position 5. From there it is transported on the belt drive 13 in the receiving position 8 on. For the transport, a belt drive 13 with a plurality of belts 14 is used, on each of which a driver 17 protrudes radially outwards in order to simultaneously transport an entire bag bundle 3 via the driver 17.

In FIG. 2 the transfer region 35 and the receiving surface 6 at the receiving position 8 is shown enlarged. After switching on and starting the system is a first bag bundle 3 in the transfer position 5, while the cell 31 associated tines 33 of the empty bag cell belt are immersed in spaces 19 in the feed table, while extending over the entire width bag bundle 3 of the Belt 14 is retained and thus stored on the transfer area 35 of the tray table 7. The transfer region 35 is inclined with respect to the horizontal, in order to transport the bags via a translatory Distance 11 to overcome a height difference 12 from the task height 32 at the empty bag magazine to the receiving height 24 at the receiving surface 6.

The transport device 4 comprises the in FIG. 2 half-hidden and in FIG. 3 clearly recognizable driver 17, so when driving the belt drive 13, the in FIG. 2 shown bag bundle 3 is moved in the direction of the receiving position 8. The drivers 17 protrude radially outward from the belt. Preferably, exactly one driver 17 is provided per belt, which projects respectively through the slots 38 of the delivery table 7 over the surface 37 and can be driven in the forward direction and in the reverse direction.

For tensioning the individual belts individually mounted tension rollers 16 are provided, so that each belt 14 of the belt drive 13 is tensioned separately, for example, to compensate for manufacturing tolerances.

In order to avoid incorrectly inserted bag bundles or other incorrectly inserted into a cell 31 solid objects damage to the system, the tray table 7 is mounted pivotally about the pivot point 39, but is of a here in FIG. 2 non-visible biasing device 40 is biased into the operating position 41, in which the receiving surface 6 is aligned substantially horizontally. If a force exceeding the force of the preloading device 40 is exerted from above onto the transfer region 35 of the delivery table 7, the transfer region 35 of the delivery table 7 pivots about the horizontal axis 39 and a position sensor 42, also not shown here, triggers an alarm which regularly leads to a Stop the plant leads.

The drive shaft 15 of the belt drive 14 is shown in the illustration FIG. 2 arranged at the right end of the storage table 7.

The plug-on head 20 comprises a gripper system 44 and an acceleration system 45, as well as a bag opening device 21 to to open the bag valves of the recorded bags 2. The accelerator system 45 includes a roller bar 25 and a belt drive 26 to accelerate the bags to the filler neck. The bag opening device 21 comprises angled plates 22 and 23 which can swing apart to introduce a bag, and to open the bag valve during pivoting back.

In FIG. 3 is the device after FIG. 1 wherein a bag bundle 3 is arranged in the receiving position 8 on the receiving surface 6 of the support table 7 and another bag bundle 3 in the waiting position on the waiting area 36, to which the belt drive 13 transports the bag bundle 3 by means of the carriers 17 arranged on the belt 14 has, after the currently processed bag bundle 3 was brought to the receiving position 8. This method offers the considerable advantage that, when the bag bundle is used up in the receiving position 8, the bag bundle 3 located on the waiting area 36 can be transferred into the receiving position 8 by a short movement of the belt drive 13, for which only a short time is required due to the short distance , which does not interfere with the continuous operation of the plant and still reserves for larger Aufsteckgeschwindigkeiten.

Clearly visible in FIG. 3 the prongs 33 which mesh with the slits 38 of the delivery table 7 widened to intermediate spaces 19, while the sack bundles 3 are brought from the empty sack cell magazine 30 to the delivery table 7.

In FIG. 4 is a plan view of the tray table 7, wherein the plug-on head 20 has been omitted in order to increase the clarity. Clearly recognizable are the slots 38 in the storage table 7, which are again significantly widened in the transfer area 35 and form spaces 19 so that the prongs 33 can pass through the spaces 19 when they pass a new bag bundle 3 to the delivery table 7. In the plan view, the four belts 14 of the belt drive 13 can be seen. At the left edge is still a part of the empty bag magazine 30 recognizable.

In the FIG. 4 shown situation is shown in perspective in FIG. 5 shown enlarged, in which case the arranged on the belt 14 tines 17 of the belt drive 13 are in the rear position, in which they are suitable to transport a stored on the transfer area 35 bag bundle on.

With reference to the Figures 6-12 Now, another embodiment of the device 10 according to the invention will be explained, wherein the same or similar components have the same reference numerals. The device 10 is used to attach bags 2 to a filler neck of a packing machine, not shown, and here comprises in the exemplary embodiment a storage table 7 and a plug-20, which receives the arranged on the tray table 7 in the receiving position 8 bags of a bag bundle 3 one after the other and the bag valve opens and attaches the bag on the filler neck of the packing machine.

As an intermediate storage for the bags 2 is the empty bag cell magazine 30, which is arranged here in the embodiment at a different angle to the transport direction of the plug-on head 20 or the belt drive 13 of the device 10, for. meet certain space requirements or given space. This means that the conveying direction of the empty bag cell magazine 30 differs from the further transport device in the device 10, so that an angular conversion must take place. This is done here in the embodiment by means of a turntable 50 which is disposed between the tray table 7 and the empty bag cell magazine 30 and adjacent to both.

FIG. 7 shows in an enlarged side view schematically a portion of the empty bag cell magazine 30 and the tray table 7, and the turntable 50, the vertical pivot axis is not shown here.

In FIG. 7 is shown in side view, as a bag bundle 3 at the transfer point of the empty bag magazine to the turntable is provided while in FIG. 9 this situation is shown in the supervision.

In FIG. 8 is in a side view and in FIG. 10 in a plan view of the situation after the bag bundle 3 has been transferred from the cell 31 of the empty bag magazine 30 to the turntable 50 located in the transfer position 51. For this purpose, the bag bundle 3 is here by means of a pivot member 52 which is pivotable about a horizontal axis, transferred from a first pivot position 53 in a second pivot position 54, wherein the radially outer part of the pivot member 52 includes driver elements 58 which grip the bag bundle 3 and from the empty bag magazine 30 pushes on the table, so that in FIG. 10 illustrated state, wherein the turntable 50 is aligned in a first rotational position 55, in which the teeth of the pivot members 52 can mesh with the slots 57.

In the operating conditions, in the FIGS. 7 to 10 are shown, the pivotable transport unit 60 of the belt drive 13 in the lower pivot position 62 to bring the driver 17 outside the pivoting range of the turntable 50, so that a safe Veschwenkung the turntable 50 about the rotation axis 59 from the first rotational position 55 in the second Turn position 56 and can follow back. The pivotable transport unit 60 is provided with an adjustment unit 63 in order to pivot the transport unit 60 from the pivoting position 61 into the pivoting position 62 and back.

Furthermore, a slotted tray 47 is provided, which supports the bag bundle 3 from below when transferring a bag bundle 3 from the empty bag cell magazine 30 to the turntable 50. The tray 47 is biased by a biasing device 40 in a normal operating position 41. As described above, the preload device 40 releases in the event of an overload and activates the position sensor 42, which periodically provides for switching off the device 10 or at least its drive system.

As the pivot axis of the pivotable transport unit 60, the horizontal axis 39 serves.

In FIG. 11 the operating state is shown when the turntable has been pivoted to the second rotational position 56 and the bag bundle 3 can now be moved to the receiving position 8 on the tray table 7. For this purpose, the pivotable transport unit 60 is moved after pivoting of the turntable 50 in the second rotational position 56 in the upper pivot position 61, in which the slots 57 are aligned in the turntable 50 with the belt 14 of the belt drive 13, so that the driver 17 on the belt 14th to mesh with the slots 57 in the turntable 50 and project through it, so that a bag bundle 3 located on the turntable can be transferred from the drivers 17 into the receiving position 8.

Just as in the previous embodiment may be provided between the turntable 50 and the receiving surface 6 still a waiting area 36 to store a bag bundle 3 between.

LIST OF REFERENCE NUMBERS

1

packing machine

2

valve bag

3

sack bundle

4

transport means

5

Transfer position

6

receiving surface

7

tray table

8th

pickup position

10

Aufsteckautomat

11

Translational distance

12

height difference

13

belt drive

14

belt

15

drive shaft

16

idler

17

takeaway

18

remit

19

gap

20

Aufsteckkopf

21

Sack opener

22

Angled sheet metal

23

Angled sheet metal

24

Seat height

25

roller strip

26

belt drive

30

Empty bag magazine

31

Compartment, cell

32

Feeding height

33

prong

34

filling

35

Transfer area

36

waiting area

37

surface

38

slot

39

Horizontal axis

40

biasing means

41

operating position

42

position sensor

44

gripper system

45

acceleration system

46

direction of rotation

47

shelf

50

turntable

51

over position

52

pivoting element

53

pivotal position

54

pivotal position

55

1st rotational position

56

2nd rotational position

57

slot

58

takeaway

59

axis of rotation

60

transport unit

61

Upper pivot position

62

Lower pivot position

63

adjustment

70

Austrageband

Claims (14)

1. Device (10) for fitting bags (2),
   in particular for fitting valve bags (2) on a filler neck of a packaging machine, with a storage table (7) and a transport device (4) to transfer a bundle of bags (3) in a transfer area (35) and convey it to a receiving position (8) on the storage table (7), where a bag (2) can be seized individually in order to take the bag (2) and subsequently fit it on,
   characterized in
   that the transport device (4) comprises a belt drive (13) for transportation to the bundle of bags (3) by means of which not only a translational distance (11) but also a predetermined difference in height (12) can be bridged, and that the belt drive (13) in the transfer area (35) in a plan view is formed bifurcated with yoke ends projecting towards the outside and intermediate spaces (19) and that the belt drive (13) comprises at least two parallel belts (14).
2. Device (10) according to claim 1, with the belt (14) of the belt drive (13) comprising at least one driver (17) projecting towards the outside in order to entrain a bundle of bags (3), and with the storage table (7) comprising slots (38) through which the drivers (17) project towards the top via the surface (37), if the drivers (17) are located in corresponding areas.
3. Device (10) according to any one of the preceding claims, with an empty bag store (30) being provided, which comprises a feeding area (18) to which in a predetermined feeding height (32) bundles of bags (3) can be fed, with the empty bag store (30) being adapted and destined to convey bundles of bags (3) from the feeding area (18) to the transfer position (5), and with the empty bag store (30) being configured in particular as an empty bag belt feeder (30), which between teeth (33) projecting radially towards the outside comprises a cell (31) each for receiving a bundle of bags (3), and with the empty bag belt feeder (30) being adapted and destined to transfer in clocked operation one bundle of bags (3) each to the transport device (4) in transfer position (5).
4. Device (10) according to any one of the preceding claims, with the storage table (7) comprising an even receiving surface (6) on the receiving position (8) and/or a transfer area (35) at the transfer position (5) inclined towards the receiving surface (6).
5. Device (10) according to any one of the preceding claims, with the receiving position (8) for receiving a bag (2) from the storage table (7)) being located in a predetermined receiving height (24), which is clearly located higher than the feeding height (32) of the feeding area (18).
6. Device (10) according to at least one of the preceding claims, with the belts (14) in the area of the transfer area (35) of the storage table (7) being each stored separately, and with each belt (14) being tensioned separately via a tensioning pulley (16).
7. Device (10) according to at least one of the claims 3 to 7, with the teeth (33) of the empty bag belt feeder (30) combing with the spaces (19) of the storage table (7).
8. Device (10) according to at least one of the preceding claims, with the storage table (7) being located pivotable around a horizontal axis (39) and being prestressed into an operating position (41) by means of a prestressing device (40), with the storage table (7), if an overload occurs, being pivoted into a safety position and activating a position sensor (42) which emits an alarm signal.
9. Device (10) according to at least one of the preceding claims, with a rotating table (50) being provided, which on an empty bag store (30) located under an angle to the transport direction of the transport device (4) transfers a bundle of bags (3) into the transfer position by pivotal movement of the rotating table (50), and with the rotating table (50) in a first turning position (55) being adapted to transfer a bundle of bags (3) from the empty bag store (30).
10. Device (10) according to claim 9, with the rotating table (50) comprising slots which, in the first turning position (55), are combing with the teeth (33) of the empty bag store (30).
11. Device (10) according to at least one of the preceding claims 9 or 10, with a pivoting element (52) being provided which, in the first turning position (55) comprises drivers (58) combing with the slots (57) of the rotating table (50) in order to transfer a bundle of bags (3) from the empty bag store (30) onto the rotating table (50).
12. Device (10) according to at least one of the preceding claims 9 to 11, with the slots (57) of the rotating table (50) in the second rotating position (56) being aligned with the drive belts (14) so that the drivers (17) of the drive belts (14) can pass through the slots (57) of the rotating table (50) in order to transport a bundle of bags (3).
13. Device (10) according to at least one of the preceding claims 9 to 12, with the transport device (4) comprising a pivotable transport unit (60) below the rotating table (50) which can be pivoted from an upper pivoting position (61) for transport of the bundles of bags (3) into a lower pivoting position (62) for pivoting the rotating table (50).
14. Filling station (1) with at least one filler neck (34) for filling valve bags (2) comprising at least a device for fitting the valve bags onto the filler neck (34) according to any one of the preceding claims.

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