EP3621881B1 - Compacting station for compacting bulk material in open-mouth bags and method - Google Patents

Description

The present invention relates to a compacting station with at least one compacting device for compacting open sacks filled with bulk goods. The invention is used in particular in connection with a device such as that described in US Pat WO 2016/046302 A1 have become known. In such a known device, bags are filled, for example, with bulk materials such as cement, high-quality joint mortar or other building materials. Block-shaped bags with a high degree of compression are produced.

In the prior art are with the WO 2016/046302 A1 a device and a method for filling open sacks have become known, with this known device the filling weight of a filled open sack being between approximately 1 kg and 10 kg. With the known device, in particular bulk goods such as cement or high-quality joint mortar or other building materials are filled into open bags, which are also referred to as bags or small bags. In the known device, the bags can be produced directly in a device upstream of the device as part of the filling process. For this purpose, for example, a flat film is passed over a forming shoulder and the flat film is welded there to form a film tube. In the known device, the open bag to be filled is received in a receiving box and filled there. With the known device can Filling box-shaped open-top bags that are compacted during the process. At the end of the process, square open bags can be packed. The known device works satisfactorily.

However, if the open sacks filled with bulk goods are picked up by many people or if the open sacks are pressed too hard (or fingered extensively with the hands), the sacks can soften and lose their exact cuboid shape.

It is therefore the object of the present invention to provide a device with which filled open sacks retain their cuboid shape even better.

This object is achieved by a compression station with the features of claim 1 and by a method with the features of claim 13. Preferred developments of the invention are the subject matter of the subclaims. Further advantages and features of this aspect of the invention emerge from the general description and the description of the exemplary embodiments.

A compression station according to the invention comprises at least one compression device for the compression of open sacks filled with bulk goods. The compression device comprises a container with a tubular inner wall and a receiving space for receiving a filled open bag. Furthermore, a support unit is provided on a height-adjustable lifting device. The support unit is adjustable in height relative to the container in particular by means of the height-adjustable lifting device. In a lowered position of the lifting device, the support unit is supported from below and, in a raised position, is suitable for taking over a filled open bag from an adjacent conveyor device. Furthermore, a press ram that can be lowered from above is included, which in a lowered position acts on the bulk material from above and which, in a raised position, enables a filled open bag to be taken over from an adjacent conveyor device.

The compression station according to the invention has many advantages. A considerable advantage of the compression station according to the invention is that a filled open bag is compressed within a container. As a result, the shape of the container is impressed on the open bag. For example, square-shaped, filled open bags with a high degree of compression can be produced.

In particular, in a lowered position of the lifting device, the support unit is supported or set down on support hooks of the container and supported by them from below. Other support from below is also possible.

The container can preferably be raised and lowered periodically by one container stroke via a compression gear. A periodic raising and lowering of the container relative to the ram ensures a pounding or shaking compression of the bulk material filled into the open bag. The container stroke is preferably less than a fifth and in particular less than a tenth of the length of the container. In particularly preferred embodiments, the container stroke is less than 50 mm and in particular less than 20 mm and preferably less than 10 mm. In a specific embodiment, a stroke of 6 mm is used. The stroke can be selected depending on the container size and in particular the container height and the desired degree of compression and the compressibility of the bulk material.

The ram is preferably driven by a pneumatic drive. The pneumatic drive can comprise at least one pneumatic cylinder. The compression gear is preferably driven by an electric motor. The combination of a pneumatic drive and another, for example electric drive has the advantage that the Pneumatic drive can compensate for pressure surges, so that overloading is reliably prevented.

Another significant advantage of a pneumatically operated press ram and a compression gear is that the press ram is automatically adjusted with increasing compression (due to the pneumatics). Even with increasing compression, it is ensured that the acting force remains (practically) the same. Alternatively, it is also possible for the ram to stand still and the container to be raised and pneumatically adjusted.

In advantageous embodiments, a dedusting device is attached to the container. It is possible, for example, for the upper container opening to be at least partially surrounded by a dedusting opening. For example, dedusting gaps can be provided on one side of the container or on several sides of the container, which suction the upper area of the container and thus reliably remove a large part of any dust that may emerge.

In preferred embodiments, an upper section of the container is conical or funnel-shaped or the like, so that it is easier to insert an open bag into the container.

In advantageous refinements, the compression device is assigned a slide, swivel arm or the like, or the compression device has a slide with which the filled open bag can be pushed onto the support unit and / or back again laterally from, for example, the conveyor device. In addition, an open bag to be compressed can be removed from the conveyor device and compressed in the compression station, while the conveyor device itself continues to run and, for example, transports a second filled open bag to a second compression device of the compression station. About the parallel and simultaneous compression If there are several filled open-mouth bags, the processing speed can be increased with a long dwell time in the compression station.

In all configurations, it is preferred that the slide includes suction cups in order to keep the upper bag wall open. The slide preferably comprises suction cups at different heights in order to be able to keep the upper sack wall open in a targeted manner in each case of open sacks of different heights.

In all of the configurations it is possible for the support unit to be able to be raised using a short lifting device. This enables the support unit to be positioned slightly higher than the level of the conveyor when transferring a compressed open sack from the support unit to the conveyor, so that the already compressed open sack can be pushed off easily onto the conveyor. Conversely, the support unit can be placed slightly below the level of the conveyor device when an open bag to be compressed is transferred from the conveyor device to the support unit with the pusher. For example, the short stroke device can perform a stroke of 5 mm or 10 mm or 20 mm or an intermediate value. With a stroke of 10 mm, there is preferably a height difference of about 5 mm each time when an open bag to be compacted is transferred to the support unit by means of the pusher from the conveyor, and there is also a height difference of about 5 mm when the Open bag is to be pushed back from the support unit onto the conveyor.

In all of the configurations it is preferred that the press ram is equipped with a suction device.

In all of the configurations it is preferred that the compression station comprises at least 2 compression devices or 3 compression devices or more compression devices for compressing open sacks filled with bulk goods. The compression devices are preferably arranged one behind the other and connected to one another via a conveyor device. This makes it possible to compress a filled open bag several times. In particular, however, it is also possible to compress a filled open bag at several compression devices at the same time, so that the processing speed increases accordingly.

The method according to the invention is used to compact bulk material in an open bag filled with bulk material. A filled open bag is placed on a support unit. The support unit with the filled open bag placed on it is lowered into a tubular receiving space of a container to such an extent that the product level is in the tubular receiving space of the container. The support unit of the container then stands on support hooks or is supported from below. A press ram dips into the open end of the open bag from above, at the same time or preferably beforehand, and acts on the bulk material from above, while the support unit (supported by the support hooks) presses against the bottom of the sack from below. The lifting device moves in particular down and separates z. B. from the support unit when the support unit strikes the support hook.

The method according to the invention allows an advantageous compression of bulk goods in open sacks, whereby a parallelization to increase the performance of the overall system or a higher degree of compression of the overall system is made possible for a given overall output.

Further advantages and features of the present invention emerge from the exemplary embodiments which are explained below with reference to the accompanying figures.

Figur 1

eine schematische perspektivische Ansicht einer Füllvorrichtung zum Füllen von Schüttgütern in Offensäcke;

Figur 2

eine Verdichtungsstation zum Verdichten der Offensäcke;

Figur 3

eine schematische Querschnittsansicht der Verdichtungsstation gemäß Figur 2;

Figur 4

eine perspektivische Ansicht einer Verdichtungseinrichtung der Verdichtungsstation nach Figur 2 in einer ersten Stellung;

Figur 5

die Verdichtungseinrichtung aus Figur 4 in einer zweiten Stellung;

Figur 6

eine Reinigungsvorrichtung zur Reinigung des Behälters der Verdichtungseinrichtung aus Figur 4;

Figur 7

eine Platte des Plattenverbundes der Reinigungsvorrichtung nach Figur 6;

Figur 8

eine Explosionsdarstellung des Plattenverbundes der Reinigungsvorrichtung nach Figur 6; und

Figur 9

eine schematische Seitenansicht eines Details einer Hebeeinrichtung.

In the figures show:

Figure 1

a schematic perspective view of a Filling device for filling bulk goods into open-top bags;

Figure 2

a compacting station for compacting the open bags;

Figure 3

a schematic cross-sectional view of the compression station according to FIG Figure 2 ;

Figure 4

a perspective view of a compression device of the compression station according to Figure 2 in a first position;

Figure 5

the compression device off Figure 4 in a second position;

Figure 6

a cleaning device for cleaning the container of the compression device Figure 4 ;

Figure 7

a plate of the plate assembly according to the cleaning device Figure 6 ;

Figure 8

an exploded view of the panel assembly according to the cleaning device Figure 6 ; and

Figure 9

a schematic side view of a detail of a lifting device.

Figure 1 shows the basic structure of a filling machine 1. It shows Figure 1 a perspective overall view of the filling machine 1 for filling bulk goods (and possibly fluids) in flexible and open-top bags 3. The bags 3 to be processed consist of a flexible material and in particular of a plastic material. The filling machine 1 comprises a filling carousel 2, a sack source 70 and an intermediate silo 80 for intermediate buffering of the bulk material to be filled.

A film roll 71, onto which a film web 72 is wound, is provided here as the sack source 70. The film web 72 unwound from the film roll 71 is fed to a forming shoulder 73. There, the film web 72 made of plastic film is guided around the shoulder and a longitudinal seam is welded so that a continuous film tube is created.

The bottom of the bag is produced at the transfer station 60, in which suitable weld seams are introduced transversely to the longitudinal extension of the tubular film. The tubular film held in the appropriate cross-section is conveyed further and brought into the receiving box 62 of the transfer station 60. There the open sack 3 to be filled is received in a form-fitting manner. For the supply, the tubular film is cut to fit so that the open-topped end of the open sack is produced.

It is also possible to manufacture the open-topped sacks from an already prefabricated and, for example, extruded film tube, or also to supply completely prefabricated flexible sacks or bags from a magazine or the like.

In Figure 1 the pivot position 63 of the transfer station 60 is shown.

The device or filling machine 1 has a base frame to which the filling carousel 2 and the other components are attached. Part 5 of the device is designed to be stationary, while part 6 rotates during operation. Various treatment stations are provided at the individual filling stations, with the filling being carried out in the coarse flow at one treatment station and the filling in the fine flow at a further treatment station 41. The filled bulk material is compacted at further treatment stations.

The filling carousel 2 is operated clocked here. The required bulk material is fed from the intermediate silo 80.

If the compression achieved at the filling carousel 2 is not yet sufficient, a compression station 100 can be connected downstream, as shown in FIG Figure 2 is shown. The compaction station 100 off Figure 2 here comprises five different compression devices 101, which are here arranged in series.

Each compression device 101 comprises a pressing device 123, each of which has a pneumatic drive 124 in the form of a pneumatic cylinder. A ram 120 can be raised or lowered by means of a lifting and lowering unit 126. In the lowered position, pressure is then exerted on the bulk material via the pneumatic cylinder 124.

The filled open sacks 3 are conveyed via the conveying device 106, which is preferably designed as a conveyor belt. If compression is to take place on one of the compression devices 101, the damming flap 108 is retracted or swiveled in in order to position the open bag in a defined manner in the conveying direction and the corresponding slide 105 is activated at the appropriate moment. Thus, an open bag 3 to be compressed is withdrawn from the conveyor device 106 and introduced into a container 110. Dedusting lines 130 are provided to remove dust during compression. With the lifting device 102 an in Figure 2 non-visible support unit 231 can be adjusted in height.

Figure 3 shows a schematic cross section through the compression station according to FIG Figure 2 . At the upper end, the pressing device 123 with the pneumatic cylinder 124 can be seen, to which a linkage and then the press ram 120 coupled to it are connected at the bottom. The actual pressing surface of the press ram 120 can be equipped with a suction device 125 in order to effect an effective ventilation. The suction device 125 can effectively suck air out of the bulk material.

The slide 105 is here in the position above the container 110, which the slide has reached after an open bag 3 to be compressed has been transferred from the conveying device 106 to a support unit 131. The open sack 3 is shown here in dashed lines, as is a press ram 120 which is immersed in the open sack and which is shown in broken lines in the lowered position 121. In the raised position 104, the open bag 3 rests on the support unit 231, which is detachably coupled to the layer composite 203 via magnets 232. When the lifting device 102 is in the lowered position 103, the support unit 231 rests on hooks 116 at the lower end of the container 110. As a result, the support unit 231 is decoupled from the lifting device 102, since forces in the vertical direction are diverted from above onto the bulk material or the open bag directly via the hooks 116 and the container 110. The magnetic connection between the support unit 231 and the layer composite 203 prevents the support unit 231 from tilting in the tubular inner wall 111 when it is lowered. In order to ensure good adhesion of the magnets at all times, it is possible to use individual fluid outlet openings such. B. to exit at an oblique angle in the upper cover plate or end plate in order to clean them from particles deposited thereon.

The layer composite can consist of individual (and prior to assembly or production) separate panels that form a one-piece or multi-part panel composite. It is also possible and preferred, however, that at least a part of the layer composite or the entire layer composite is designed in one piece and z. B. is produced in an additive manufacturing process and / or as a 3D printing. The entire layer composite can then also be manufactured in one manufacturing step. It can guide channels or fluid passages z. B. be made by omitting material.

The container 110 has a tubular receiving space with a tubular inner wall 111. The cross-section here is rectangular, so that cuboid open bags are created.

The upper section 115 of the container 110 is slightly conical in order to facilitate the introduction of an open bag to be compressed.

In Figure 4 a part of the compression device 101 is shown in perspective. At the upper end of the container 110, the layer composite 203 with the magnets 232 can be seen on the inside, on which the support unit 231 (not shown here) rests during operation. A sack to be compressed is placed on the support unit 231 or a sliding plate (not shown) arranged thereon. Subsequently, the open bag to be compressed is lowered together with the support unit 231, so that the compression device from the in Figure 4 raised position 104 shown in FIG Figure 5 depicted lowered position 103 is transferred.

At the lower end of the container 110, which is open at the bottom, the support unit 231 can be seen, which now rests on the hook 116 of the container 110. This causes the lifting device 102 to be decoupled from the support unit 231. The height of the lifting unit 102 is adjusted via the linear guide 233, which comprises a motor.

The in Figure 4 The recognizable motor 235 serves to drive the compression gear 113, with which a periodic pitching movement of the entire container 110 takes place.

In order to obtain a decoupling of the lifting movement of the container 110 from the dedusting unit 130, the dedusting unit 130 is decoupled from the container 110. This can be done, for example, in that the dedusting device 130 is received in an elongated hole 131 on the container 110, so that a sufficient vertical offset is made possible. The elongated hole is sealed with a rubber flap.

The in Figures 4 and 5 The recognizable motor 234 serves to drive the conveyor belt 106.

Figure 6 shows part of the compression station 100 or the cleaning device 200, with which the inner wall 111 of the container 110 can be effectively cleaned when a compressed open bag 3 is removed from a container 110. For this purpose, the cleaning device 202 with the layer composite 203 is used.

The layer composite 203 comprises a plurality of layers 204 to 208, the structure and function of which are set out below with reference to FIG Figures 7 and 8th is explained. Figure 7 shows a plan view of the fluid conducting layer, in particular in the form of a fluid conducting plate 205, while Figure 8 shows a schematic exploded view of the layer composite or plate composite 203.

The cleaning device 200 can be raised and lowered via the lifting device 102. The layer composite 203 here comprises, as the lowermost plate, an end plate 204 designed as a base layer or base plate. The fluid supply 212 is connected to the base plate 204 via a fluid supply opening 213. The layer composite 203 is held together as a whole in the assembled state by means of centering pins 229 and / or screws.

Brushes can optionally be attached to or formed on one or more of the plates or layers 204-208, which assist in cleaning the inner wall.

Above the base plate 204 is the fluid guide plate 205, on which a plurality of fluid outlet openings 210, 211 are formed distributed over the circumference.

The fluid outlet openings 210, 211 form the ends of the guide channels 215, 216, which each extend from a radially inner region 219 to the outer side 220 or the outer edge on the circumferential surface 217. The guide channels 215, 216 are here as recesses or through openings in the Fluid guide plate 205 formed. The respective guide channels 215, 216 are separated from one another by material webs 222. Here, in principle, all guide channels 215, 216 run essentially in a star shape, so that fluid outlet openings are distributed over the entire circumference, which here serve in particular as blow openings for blowing out air as a cleaning medium. Here in the fluid guide plate 205 there is a central through opening 225 which has no direct connection to the guide channels of the fluid guide plate 205.

Above the fluid guide plate 205, a spacer plate 206 is used, which has a distribution trough 223 (distribution space), which is designed here as a through opening in the spacer plate 26. The fluid to be distributed (here air) is distributed to all guide channels 215, 216 via the distribution trough 223, so that air is blown to the outside from all guide channels 215, 216 via the air supply through the central fluid supply opening 213. The intensity of the blown air can be adjusted via the cross-sectional area of the individual guide channels.

It is possible for separate supply feedthroughs 226 to be formed, through which supply of further components can be realized. For example, a vacuum can be passed through the supply feed-through 226. Or compressed air is carried out. It is also possible for current or sensor signals to be passed through the supply bushing 226.

A cover plate 207 is also provided above the spacer plate 206, to which the end plate 208 finally adjoins.

The cleaning device 200 can optionally also comprise only one plate assembly or layer assembly of, for example, three plates or layers, the middle layer or plate then e.g. B. is designed as a fluid guide plate. In all cases it is possible for the guide channels in the fluid guide plate to be designed as through openings. But it is possible also that the guide channels are, for example, milled into the surface of the fluid guide plate.

Additional functions can also be integrated into the top plate 208. For example, a magnet 232 (or more) can be provided there or further actuators can be attached, such as, for. B. a short stroke device 140, which is controlled by means of supply bushings 226.

A cleaning device 200 can also be used in a corresponding manner for cleaning the receiving boxes 30 or 62 of the filling machine 1. The receiving boxes 30 and / or 62 can thus be cleaned automatically after each bag change.

With the compression station, the compression of the bulk material filled into an open sack can be increased considerably. It is possible to provide a compression station in which several compression devices are arranged one behind the other, so that parallel operation and parallel compression of a large number of filled open bags is possible. In this case, an open bag to be compacted can be pushed from a conveying device such as a flat belt conveyor to the compacting device via a slide or the like. The actual compression takes place in the container with the tubular inner wall, with a ram being lowered from above and dipping into the open-topped bag, while the bottom of the open-top bag is supported on hooks of the container via a support unit. At the same time, the area around the container can be extracted by means of a dedusting system.

During the pressing with the ram, the container can perform a periodic lifting and lowering movement, which considerably supports the compression process. At the same time, air can be sucked out through the ram. For this purpose, the contact surface of the press ram can be formed, for example, by a wire mesh or wire mesh, through which suction can take place.

Should dust escape during the compression process, the inside wall of the container 100 can be cleaned of adhering bulk material particles via the integrated cleaning device. The layer composite 203 of the cleaning device 202 is used for this, with a plurality of fluid outlet openings 210, 211 being formed on the circumferential surface 217 of the plate composite 203, through which a fluid flow can be directed onto the inner wall of the container.

The airways can be controlled in a simple manner by a corresponding design of the fluid guide plate, with the intensity being able to be adjusted accordingly by adapting the cross section or by adjusting the number of outlet openings 210, 211 per circumferential length. The orientation of the air outlet 210, 211 defines the direction of flow of the fluid and thus the direction of the fluid flow 209.

If, for example, further devices are provided above the plate assembly 203 that are also to be controlled, a supply feedthrough 226 can be formed on the layer assembly in order to enable, for example, a compressed air or vacuum connection or a compressed air or vacuum feed-through.

Since the outer dimensions of the plate assembly are regularly adapted to the inner dimensions of the container 110, a simple media exchange or data exchange can be implemented by means of a supply feedthrough 226.

The construction of the compression station 100 and the construction of the cleaning device 200 can each be implemented simply and inexpensively.

Figure 9 shows a detail of a lifting device 102, a short lifting device 140 being attached to the layer composite 203, which can here adjust the height of the plate 208 by +/- 5 mm. As a result, the support unit 231 is also adjusted accordingly. The Short stroke device 140 could also be integrated into linear guide 233.

The layer composite 203 here comprises the layers 204, 205 and 207. The layers 204 and 207 accommodate the fluid guide plate 205 between them, on which the fluid outlet openings 210, 211 are formed. Here the fluid outlet openings are z. B. been cut out of the plate 205 by water jet cutting. The short lifting device 140 is attached to the plate 207, which can adjust the height of the plate 208 once again (slightly) in order to facilitate the transfer of an open bag from the conveying device or onto the conveying device 106. The open bag rests on the support unit 231, which is magnetically and thus releasably attached to the plate 208. <b> List of reference symbols: </b> 1 Filling machine 130 Dedusting 2 Filling carousel 140 Short stroke device, short stroke cylinder 3 Open bag 5 fixed part 200 Cleaning device 6th moving part 201 Longitudinal direction 30th Reception box 202 Cleaning facility 41 Treatment station 203 Layer composite 60 Transfer station 204 Layer, top layer, bottom layer 61 Swivel arm 62 Reception box 205 Layer, fluid conducting layer 63 Swivel position 206 Layer, distance layer, 70 Bag source 207 Layer, top layer 71 Foil roll 208 Layer, final layer 72 Film web 209 Fluid flow 73 Form shoulder 210 Fluid outlet opening 80 Intermediate silo 211 Fluid outlet opening 100 Compaction station 212 Fluid supply 101 Compaction device 213 Fluid supply port 102 Lifting device 214 End face, bottom face 103 lowered position from 102 215 Guide channel 215a Guide channel start 104 raised position from 102 216 Guide channel 216a Guide channel start 105 Slider 217 Circumferential surface 106 Conveyor 218 End face, bottom face 107 Sucker at 105 219 radially inner area 108 Storage flap 221 Transverse direction 110 container 222 Material bar 111 tubular inner wall 223 Distribution trough in 206 112 Recording room 224 Through opening in 206 113 Compression gear 225 central passage opening of 205 115 upper section of 110 116 hook 226 Supply implementation 117 Vibrator suspension 227 brush 120 Press ram 228 Center hole 121 lowered position 229 Centering 122 raised position 230 drive 123 Pressing device 231 Support unit 124 Pneumatic drive 232 magnet 125 Extraction device on 110 233 Linear guide with drive 126 Lifting and lowering unit 234 engine 131 Long hole 235 engine

Claims (15)

1. Compaction station (100) with at least one compacting device (101) for compacting open-mouth bags (3) filled with bulk materials,
   the compacting device comprising a container (110) with a tubular inner wall (111) and a takeup space (112) for taking up a filled open-mouth bag (102), and a support unit (231) on a height-displaceable lifting device (102),
   characterized in
   that the support unit (231) is supported from beneath in a lowered position (103) of the lifting device (102), and in an elevated position (104) it is suitable for taking over a filled open-mouth bag (3) from an adjacent conveyor device (106),
   and that a pressure plug (120) that can be lowered from above is comprised, which in a lowered position (121) acts on the bulk material from above and in an elevated position (122), allows takeover of a filled open-mouth bag (3) from an adjacent conveyor device (106).
2. The compaction station (100) according to the preceding claim, wherein the container (110) can be periodically lifted and lowered by one container travel by way of a compaction transmission (113).
3. The compaction station (100) according to the preceding claim, wherein the container travel is less than one fifth of the length of the container, and/or wherein the container travel is less than 50 mm.
4. The compaction station (100) according to any of the preceding claims, wherein in a lowered position (103) of the lifting device (102), the support unit (231) is supported/set down on support hooks (104) of the container (110).
5. The compaction station (100) according to any of the preceding claims, wherein the pressure plug (120) is driven by means of a pneumatic drive (123).
6. The compaction station (100) according to any of the preceding claims, wherein a dust removal system (130) is attached to the container (110).
7. The compaction station (100) according to any of the preceding claims, wherein a top section (115) of the container (110) is designed cone-shaped or funnel-shaped.
8. The compaction station (100) according to the preceding claim, wherein a slider (105) is attributed to the compacting device (101) with which the filled open-mouth bag (3) can be laterally pushed from the conveyor device (106) to the support unit (231) and/or back, and/or wherein the slider (105) comprises suckers (107) to keep the top bag wall open.
9. The compaction station (100) according to any of the preceding claims, wherein the support unit (231) can be lifted by means of a short stroke device (140).
10. The compaction station (100) according to any of the preceding claims, wherein as an open-mouth bag is pushed out, a compaction transmission and/or a short stroke device can be displaced upwardly from beneath or can be activated to facilitate pushing out, in particular if an open-mouth bag jams during pushing out.
11. The compaction station (100) according to any of the preceding claims, wherein the pressure plug (120) is provided with a vacuum suction device (125) which can in particular be connected with a vacuum device.
12. The compaction station (100) according to any of the preceding claims, with at least two compacting devices (101) for compacting open-mouth bags (3) filled with bulk materials, wherein the compacting devices (101) are disposed in series after one another and connected with one another by means of a conveyor device (106).
13. Method for compacting bulk materials in an open-mouth bag (3) filled with bulk materials, wherein a filled open-mouth bag (3) is placed on a support unit (231),
    wherein the support unit (231) on which the filled open-mouth bag (3) is placed, is lowered into a tubular takeup space (112) of a container (110) far enough for the product level to be located within the tubular takeup space (112) of the container (110),
    and that the support unit (231) is supported from beneath, wherein a pressure plug (120) is inserted from above into the open end of the open-mouth bag (3) and acts on the bulk material from above, while the support unit (231) is pressed against the bag bottom from beneath.
14. The method according to the preceding claim, wherein a ramming or jolting compaction is carried out from beneath, and/or wherein rapping or vibrating against the container is carried out from outside and/or from beneath to facilitate pushing out the open-mouth bag.
15. The method according to any of the two preceding claims, wherein a compaction transmission and/or a short stroke device is activated from beneath or elevated, at least in case that an open-mouth bag jams when the open-mouth bag is pushed upwardly.

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