DEVICE AND METHOD FOR FILLING OPEN BAGS

Abstract

Apparatus and method for filling bulk goods into empty open bags (3) comprising at least one weighing unit (7) and at least one filling station (11-18) and a bag receiving unit (10) disposed thereat, wherein a bag (3) received by the bag receiving unit (10) is filled. The bag receiving unit (10) is configured as a receiving box (30) having a receiving space (31) to receive a bag (3). The receiving box (30) is provided with a suction aperture (34) to temporarily receive in the receiving box (30) the empty bag (3) intended for receiving in a form-fit at least in sections. The receiving box (30) comprises suction apertures (34) in a lower region (31a) and in at least one region (31b, 31c) above that which are controlled differently.

Claims

1. Apparatus for filling bulk goods into empty open bags comprising at least one filling station and a bag receiving unit disposed thereat and at least one weighing unit, wherein a bag received by the bag receiving unit is at least partially filled, characterized in that at least one bag receiving unit is configured as a receiving box having a receiving space to temporarily receive a bag at which receiving box at least one suction aperture is disposed for form-fit reception of the empty bag intended for receiving in the receiving box at least in sections, and that the receiving box comprises suction apertures in a lower region and in at least one region above, which are controlled differently.

2. The apparatus according to claim 1, wherein the receiving box is tubular in configuration and comprises an open top end.

3. The apparatus according to claim 2, wherein the bag receiving unit comprises an open bottom end.

4. The apparatus according to claim 1, wherein the receiving box comprises a plurality of suction apertures at least at one inner wall adjacent to the receiving space so that the bag wall rests against the receiving space, the top remaining open.

5. The apparatus according to claim 1, wherein the receiving box is configured with double walls at least at one side and comprises an intermediate space so that at least in the intermediate space an air chamber for vacuum distribution is provided.

6. The apparatus according to claim 1, wherein the receiving box comprises at least one suction branch.

7. The apparatus according to claim 1, wherein the receiving box is exchangeably attached to a retaining device.

8. The apparatus according to claim 1, wherein a separate bottom plate is inserted in a bottom end of each of the receiving boxes.

9. The apparatus according to claim 1, wherein at least one suction aperture is provided at the bottom plate.

10. The apparatus according to claim 1, wherein the bottom plates of the receiving boxes rest on a base platform.

11. The apparatus according to claim 1, wherein the retaining device comprises a pair of retaining arms and at least one suction duct.

12. The apparatus according to claim 1, wherein at least two opposite inner walls of the receiving box diverge conically upwardly.

13. The apparatus according to claim 1, wherein a plurality of filling stations and a bag receiving unit at each filling station are provided.

14. The apparatus according to claim 13, wherein the retaining devices are arranged at a filling carousel in a star pattern and wherein a deaeration duct is provided to which the bag receiving units can be connected.

15. The apparatus according to claim 1, wherein a handover station with a swivel arm is provided for handing over open bags, wherein a receiving box is disposed at the swivel arm in a plane immediately above the top edge of the receiving box at the filling station, to take over in one swivel position an open bag intended for filling from a bag source and in another swivel position to hand over the bag to the bag receiving unit at the filling station.

16. Method for filling bulk goods into empty open bags having at least one weighing unit, at least one filling station and a bag receiving unit disposed at the filling station, wherein the bag received at the bag receiving unit is at least partially filled, characterized in that through the bag receiving unit configured as a receiving box an empty bag intended for receiving is temporarily received in the receiving box in a form-fit at least in sections, and that sucking off is provided differently at the receiving box in a lower region and in at least one region above.

17. The method according to claim 16 wherein air is sucked out of the receiving box through suction apertures provided in the inner walls so that the wall of an empty bag intended for filling comes to lie against the interior of the receiving box in a form-fit.

18. The method according to claim 16 wherein as an empty open bag is received, sucking off through suction apertures is firstly stronger in a bottom region of the receiving box than in a region above.

19. The method according to claim 16 wherein as an empty open bag is received, sucking off through suction apertures is firstly stronger in a mid or upper region and thereafter in a lower region of the receiving box.

20. The method according to claim 16, wherein as an empty open bag is received, suction apertures are sucked off in a lower region of the receiving box and in a region above.

Description

[0033] Further advantages and features of the present invention can be taken from the exemplary embodiment which will be described below with reference to the enclosed figures.

[0034] The figures show in:

[0035] FIG. 1 a perspective view of an apparatus according to the invention;

[0036] FIG. 2 a sectional top view of the apparatus according to FIG. 1;

[0037] FIG. 3 an enlarged perspective view of the apparatus according to FIG. 1;

[0038] FIG. 4 a still more enlarged perspective detail view of the apparatus according to FIG. 1;

[0039] FIG. 5 a horizontal section of the apparatus according to FIG. 1;

[0040] FIG. 6 an enlarged cross-section;

[0041] FIG. 7 a horizontal view of a detail of the view according to FIG. 1; and

[0042] FIG. 8 an enlarged illustration of the bag receiving unit in the decoupling position.

[0043] With reference to the FIGS. 1 and 2 the basic structure of an apparatus 1 according to the invention that is configured as a filling machine 1 will now be described. FIG. 1 shows a perspective total view of an apparatus 1 for filling bulk goods and fluids into flexible open-top bags 3. The bags 3 processed at the apparatus 1 illustrated in FIG. 1 consist of a flexible material and in particular of plastic material. The apparatus comprises a filling carousel 2, a bag source 70 and an intermediate silo 80 for intermediate storing of the bulk goods.

[0044] In this exemplary embodiment the bag source 70 is provided with a film roll 71 on which a sheet of film 72 is wound. The sheet of film 72 unwound from the film roll 71 is fed to a shaping shoulder 73. There the sheet of film 72 consisting of a plastic film is guided around the shoulder and a longitudinal seam is welded so as to create a continuous tubular film.

[0045] The bag bottom is manufactured at the handover station 60 by making suitable welding seams transverse to the longitudinal extension of the tubular film. The tubular film having a suitable cross-section is conveyed and taken into the receiving box 62 of the handover station 60. The open-mouth bag 3 intended for filling is form-fittingly received there. For supplying, the tubular film is cut to size so as to manufacture the open top end of the open-mouth bag 3.

[0046] It is also possible to manufacture the open-top bags from a prefabricated, e.g. extruded tubular film or else to feed completely prefabricated, flexible bags or sacks from a magazine or the like.

[0047] FIG. 1 illustrates the swivel position 63 of the handover station 60 while FIG. 2 illustrates the swivel position 64 at which the open-mouth bag 3 intended for filling is transferred to the handling station 41 acting as the takeover station where the open-mouth bag 3 intended for filling is handed over to the filling station 12 as is illustrated in FIG. 2.

[0048] As can be seen in the FIGS. 1 and 2, the apparatus 1 comprises a basic frame to which the filling carousel 2 and the further components are attached. The stationary part 5 of the apparatus 1 comprises a base platform 55. The base platform 55 extends beneath the path of motion of the bag receiving units 30 disposed at the filling stations 11 to 18.

[0049] Each of the filling stations 11 to 18 has a retaining device 20 fastened to the movable part 6. Each retaining device 20 in turn carries a bag receiving unit 10 which receives, retains, and guides the bags intended for filling.

[0050] This filling carousel 2 is provided for indexed operation so that the filling stations 11 to 18 and the bag receiving units 10 received thereon are successively transported to the individual handling stations 41 to 48.

[0051] The takeover station being the handling station 41 takes over an open-mouth bag 3 intended for filling by means of a bag receiving unit 10. FIG. 2 shows the takeover of the open-mouth bag 3 intended for filling by means of the bag receiving unit 10 at the filling station 11. The filling carousel 2 is provided for indexed operation so that following a cycle the open-mouth bag 3 taken over last is located at the handling station 42 which is provided for high speed flow filling.

[0052] As can be seen in FIG. 1, the handling station 42 has a filling turbine 82 and a servo unit 83 and a filling pipe 86 assigned to it. The filling pipe 86 enters into a dust hood 87. During the filling process the dust hood 87 is lowered down into the bag receiving unit 10. A tubular part in the interior of the covering hood 87 extends telescope-like around the filling pipe 86 so that the filling pipe 86 is virtually extended downwardly. This reduces the height of fall of the bulk goods in the open-mouth bag intended for filling so as to reduce the quantity of dust for removal to prevent contamination of the apparatus 1. Moreover this prevents an additional permeation of the filled product with air due to an unnecessarily large height of fall. Compacting is possible at this filling station e.g. by means of a bottom vibrator already during the filling process.

[0053] After indexing the movable part 6 forward the bag intended for filling is conveyed to a compacting station 43 where the material bagged thus far is deaerated and compacted. In the next index the flexible open-mouth bag 3 reaches the handling station 44. This is where another filling turbine 82 driven by a motor 81 is located. The bulk goods intended for filling are fed in low speed flow to the open-mouth bag 3 through a filling pipe 86. Again, a covering hood 87 is provided which enters into the bag receiving unit 10 from above to reduce the height of fall of the bulk goods and thus the dust content and aeration.

[0054] Both the handling station 42 and the handling station 44 are provided with servo units 83 in the respective filling pipes 86 allowing pre-adjustment of the open cross-section of the filling pipes 86. In this way for example when filling different materials or identical materials with varying properties, the filling cross-section in high speed flow and the filling cross-section in low speed flow are preadjusted to achieve optimal filling properties.

[0055] After filling in low speed flow at the handling station 44 three further handling stations 45, 46 and 47 follow, each providing for compacting the filled material. The filled open-mouth bag is conveyed off at the handling station 48. The handling stations 45, 46 and 47 may be configured as a joint compacting station.

[0056] Each bag receiving unit 10 configured as a receiving box 30 is provided with a recognition unit 54 responsive to optical, magnetic or electronic requests and in particular returning a unique signal. In simple cases a bar code may be provided. It is preferred to use RFID (radio-frequency identification) for contactless recognition of the pertaining bag receiving unit 10. This allows to unambiguously identify and assign the bag receiving unit 10 concerned. This is significant for example when changing product or the size of the bags intended for filling to ensure attachment of the matching bag receiving units 10 to the filling carousel 2. This allows to also carry out other format-related machine settings.

[0057] Receiving boxes 30 of different heights may be provided for filling different quantities. The handling stations are oriented at the top ends of the receiving boxes 30 so as to dispose their top ends 32 (see FIG. 5) on the same level in the case of different heights of the receiving boxes 30. To carry out longitudinal compensation the height level of the base platform 55 disposed beneath is therefore displaced accordingly.

[0058] The filling carousel 2 is supported to rotate around the rotation axis 8 in its entirety. A handover of an open-mouth bag 3 intended for filling (presently) to the filling station 11 takes place at the handling station 41 in the swivel position 64 of the swivel arm 61. The swivel arm 61 with the coupling rod 65 forms a parallelogram-like swiveling device for the receiving box 62 whose basic structure is similar to the receiving boxes 30.

[0059] Each of these retaining devices 20 is provided with a pair of holder arms 21 and 22 which are covered on top by a covering hood 25 to protect from dust and contamination.

[0060] The height adjusters 85 are provided for height adjustment of the base platform 55 and the separate weigh platform 56. Individual height adjuster components may comprise a drive while other height adjuster components serve for guiding only.

[0061] Although the weigh platform 56 is mechanically decoupled from the base platform 55, it is height-adjusted concurrently with the base platform in the same way. A weighing unit 7 not visible in the FIGS. 1 and 2 is assigned to the weigh platform for measuring the weight of the weigh platform 56 and placed thereon, a receiving box 30 including an open-mouth bag 3 placed therein, and the filled bulk goods 4. Deducting the known weights of the receiving box 30, the weight of the bag material 3 and of the weigh platform 56 allows to calculate the weight of the filled bulk goods 4 by way of the gross method.

[0062] If any additional bulk goods or the like should accumulate over time on the weigh platform 56 or on individual receiving boxes 30, this may be taken into account by means of an empty run and capturing the tare weights. If the tare weight obtained by checking deviates too much from the original tare weight, a recommendation for servicing or cleaning may be emitted.

[0063] FIG. 3 shows an enlarged schematic perspective view of part of the apparatus 1, wherein details of the handover station 60 can be recognized on the left.

[0064] The swivel arm 61 and the coupling rod 65 of the handover station 60 are located in the swivel position 64, in which an open-mouth bag 3 intended for filling is handed over from the receiving box 62 to the receiving box 30 located directly underneath. The receiving box 62 and the receiving boxes 30 are provided with suction apertures 34 (see FIG. 4) through which air is sucked off so that an open-mouth bag 3 disposed in the receiving box 62 is placed form-fittingly against the inner wall of the receiving box 62.

[0065] After positioning the receiving box 62 in the swivel position 64 illustrated in FIG. 3, the suction at the receiving box 62 is deactivated and suction at the receiving box 30 acting as the receiving unit 10 is activated so that the open-mouth bag 3 is displaced downwardly out of the receiving box 62 into the receiving box 30 where the bag 3 once again comes to lie form-fittingly against the inner wall of the receiving box 30.

[0066] In FIG. 3 one can also see the dust hood 87 at the handling station 44. A dust-removing hose, not shown, is connected with the top end of the dust hood 87 to carry off the dusty air.

[0067] Each of the receiving boxes 30 comprises a receiving space 31 having a cross section, in this case rectangular, that is approximately constant over the height. Preferably the inner walls extend slightly conically diverging upwardly to facilitate insertion from above and upwardly removal. A preferred angle is between 0.25° and 2° and it may be e.g. 0.35° or 0.5°. The dimensions of the rectangular cross-section depend on the desired dimensions of the filled open-mouth bags. The dimensions are predetermined by the dimensions of the receiving boxes 30 and the flexible bag material is selected accordingly, or vice versa.

[0068] Except for the handling station 44 where the weighing unit 7 is provided, the receiving boxes 30 at the other handling stations are each located above the base platform 55.

[0069] As can be seen in FIG. 3, the handling stations 45-47 are each or in their entirety provided with at least one compacting drive 84 in the form of e.g. an unbalanced mass vibrator or a magnetic vibrator and at least one spring 79 to obtain efficient compacting of the filled material. Compacting devices acting from above are possible as well.

[0070] FIG. 4 shows a further enlargement of a perspective view of the filling carousel 2, presently with one receiving box 30 only at a retaining device 20. The suction apertures 34 can be seen in the interior of the receiving box 30. The receiving box 30 is provided with retaining link plates 40 with which the receiving box 30 is fastened to the holder arms 21 and 22 of the retaining device 20. The bottom end 33 of the receiving box 30 shows a service door 39 to provide access to the intermediate space of the double-walled receiving box 30. When multiple intermediate spaces disposed on top of one another and separated from one another are provided, a corresponding number of service doors 39 is preferably provided.

[0071] A receiving box 30 may be decoupled by means of a control device not shown in detail. Manual decoupling is possible any time by way of the unlatching device 26.

[0072] In FIG. 4 one can also recognize the suction duct 23 at the retaining device 20 through which the air is sucked out through the suction apertures 34 at the receiving box 30. Above the service door 39 shown in a solid line another service door 39 is illustrated in a broken line in the case of two intermediate spaces disposed on top of one another.

[0073] FIG. 5 shows a part sectional side view of the apparatus 1, where one can see the rotation axis 8 of the filling carousel 2 and the drive 19 of the filling carousel 2.

[0074] At the bottom end of the receiving boxes 30, bottom plates 50 lie on the base platform 55 so that a bag 3 received in the receiving box 30 is supported on the top surface of the bottom plate 50. The bottom surface of the bottom plate 50 is in gliding contact with the base platform 55 when the filling carousel 2 is indexed further.

[0075] Thus, the bottom plate 50 represents a gliding plate or wear plate that protects the bottom of an open-mouth bag 3 intended for filling from being contaminated or damaged while the filling carousel 2 is rotated or indexed further.

[0076] The receiving box 30 is shown in FIG. 5 in cross-section. It can be seen that an air chamber 37 extends from the top end 32 to the bottom end 33 between the inner wall 35 and the outer wall 36. A plurality of suction apertures 34 is disposed on the inner wall 35 for the bag wall to lie form-fittingly against the receiving space 31 of the receiving box 30.

[0077] The intermediate space 37 is supplied with a vacuum through the suction branch 38. The shown suction branch 38 ends slightly spaced apart from the suction duct 23 attached to the movable part 6. The suction duct 23 couples to the suction connection 52 at the specified fixed angular positions. A sealing connection is provided by means of the gliding sleeve 53 which glides over the outer surface of the presently annular deaeration duct 9 while the movable part 6 rotates.

[0078] The bottom plate 50 is also provided with suction apertures 34 through which air is sucked off preferably at the takeover station 41 to suck an open-mouth bag 3 intended for filling into the receiving box 30 from above or to support the movement. It is also possible to provide, instead of suction apertures 34 in the bottom plate, additional, controlled suction apertures in a bottom region of the receiving box 30.

[0079] The FIGS. 5 and 6 show in broken lines a variant where a number of regions 31a, 31b and 31c across the height are provided for coupled or else separately controlled suction. A lower region 31a is provided with additional suction apertures 34 which are shown having a rectangular cross-section. Or else these suction apertures 34 may be round, oval or slotlike or shaped otherwise. This configuration allows to omit suction apertures 34 in the bottom plates in part and in particular entirely.

[0080] For handing over an open-mouth bag 3 intended for filling to the bag receiving unit 10 or the receiving box 30, air may firstly be sucked off e.g. only in the upper region 31c through the suction apertures 34 in the upper region 31c along the drawn arrow. When the bag 3 has already been sucked some distance into the receiving box 30, suction may be activated or boosted in the mid region 31b while in the upper region 31c suction is reduced and optionally temporarily entirely deactivated. Finally, suction takes place in the lower region 34 so that a bag 3 is pulled all the way down.

[0081] It is also possible and preferred to then emit an air blast from above downwardly into the opened bag 3 which takes the bag 3 that is held open reliably and reproducibly down and positions it on the bottom plate 50 or on the base platform 55 in case no bottom plate 50 is provided. The strength of the air blast emitted through one or more air nozzles may be determined by experimenting. In the alternative or supplementarily to an air blast, a mechanical pressing device may force the bag bottom downwardly. At the same time, the suctioning action through the suction apertures 34 may be slightly reduced to ensure reliable lowering of the opened bag 3 in the bag receiving unit 10.

[0082] FIG. 6 shows a cross-section of the receiving box 30 transverse to the cross-section in FIG. 5. The receiving box 30 is retained at the retaining device 20 by means of the lateral retaining link plates 40. The manual unlatching device 26 is provided on the side. In the lower region 31a the bottom plate 50 rests on the base platform 55 also provided with suction apertures 34 which are coupled with the suction connection 51 beneath the bottom platform 55. The suction connection is connected with a suction hose, presently not shown.

[0083] It can be seen that a plurality of suction apertures 34 each is arranged in the lower region 31a, in the mid region 31b, and in the upper region 31c. The suction apertures in the different regions 31a to 31c may preferably be controlled separately if the separating webs 35a and 35b shown in broken lines are provided which then subdivide the intermediate space 31 in separate air chambers 37a, 37b and 37c. Controlling may be provided by separately controlled valves.

[0084] Or else it is possible to provide a specific suctioning profile across the height of the receiving box 30 by way of the number and types of suction apertures or by way of their cross-sections or by way of fixed flow cross-sections and flow paths.

[0085] FIG. 6 furthermore shows a configuration of the suction apertures 34 at the bottom plate 50 which is conceivable in all the configurations. The bottom surface of the bottom plate is formed primarily or even predominantly by an air-permeable support unit 50b which in this case comprises a wire cloth or multiple wire cloths. Due to the suction aperture 34 being covered by the wire cloth 50b the bag intended for filling can rest with its entire bottom on the bottom surface. Any bagging or deforming of the bottom due to the filled weight and/or due to suction can be largely or entirely avoided. It is also possible to use wire netting or other components to support the bottom surface. In all the cases at least one separate support member may be provided beneath the wire cloth for supporting said wire cloth as it is schematically shown in FIG. 6.

[0086] FIG. 7 shows a side view of part of the apparatus 1 with the handling station 44 visible. The handling station 44 is provided with the weighing unit 7 which can weigh the separately configured weigh platform 56 and the parts located thereon. FIG. 7 shows a state as it is present just as the handling station 44 has been reached. At this moment the receiving box 30 is still firmly coupled to the retaining device 20 through the locking unit 24 so that the receiving box 30 is not shown resting on the weigh platform 56 but located a short distance above.

[0087] Resting on the weigh platform 56 is the bottom plate 50 which is free to move in the vertical direction relative to the receiving box 30 while being configured high enough so that the receiving box 30 pulls the bottom plate 50 along in the rotational motion of the filling carousel 2. Thus, there is gliding relative motion between the bottom surface of the bottom plate 50 and the weigh platform 56 respectively the base platform 55 as the movable part 6 is indexed further. To ensure better transfer of the bottom plate 50 from the base platform 55 to the weigh platform 56 or in the next index from the weigh platform 56 to the base platform 55, the weigh platform 56 is provided with a momentum grade 57 and the base platform 55 is provided with a momentum grade 58.

[0088] A broken line in FIG. 7 shows an open-mouth bag 3 which for better clarity is shown spaced apart from the inner wall 35. The open-mouth bag 3 virtually comes to rest firmly against the inner wall 35. Some bulk goods 4 are exemplarily shown in the open-mouth bag 3.

[0089] The base platform 55 is height-adjustable and it may be adjusted high or still higher, for example up to the broken line 89, for mounting suitable receiving boxes 30 to the handling stations 41 to 48. After an exchange, bags having correspondingly smaller volumes may be filled.

[0090] FIG. 8 shows an enlarged detail view of a receiving box 30 at the weighing station 44 with the receiving box 30 shown in the lowered decoupling position 76. For decoupling, the clamping cone 27 of the locking unit 24 is extended so that the receiving box 30 previously lifted up by the retaining link plates 40 is lowered and rests on the weigh platform 56 at the weighing station 44. Extending the lifting unit respectively locking unit 24 achieves a decoupling of the weight of the receiving box 30 from the pertaining filling station respectively the pertaining retaining device 20. This allows to very accurately determine the weight thus far filled into the bag 3.

[0091] To facilitate lowering the receiving box relative to the filled bag, the connection of the suction duct 23 with the suction branch 38 may be interrupted at the weighing station to enable relative motion between the bag and the receiving box. Even if the receiving box is not lowered completely, the receiving box together with the bag rests on the weigh platform 56 by way of friction fit, which results in precise weighing by the gross method as it has been described.

[0092] For example if bulk goods intended for filling should accumulate in the intermediate space 37, the service door 39 may be opened as required to empty out and optionally clean the intermediate space 37.

[0093] FIG. 8 shows in a broken line a pair of recesses or grooves 50a at the bottom plate 50 which serve to receive holding units or lugs 30a at the receiving box 30. The components 50a and 30a ensure that the bottom plate 50 does not fall out when the receiving box 30 is lifted manually. In simple cases the holding units or lugs 30a at the receiving box 30 are manufactured by folding over the metal sheet edge of the receiving box 30.

[0094] The receiving box 30 may be supported on three feet 30b in all the configurations. At least one of the feet 30b may be adjustable. Preferably all of the feet 30b are adjustable. This prevents the receiving box 30 from resting on its outer frame as the receiving box 30 is lowered at the weigh platform 56. In the case of any manufacturing tolerances the receiving box 30 may be prevented from slightly inclining in any direction. Thus the receiving box 30 can be prevented from leaning against the holding brackets which would adulterate the weight. One, two or three adjustable feet 30b ensure that the receiving box 30 sits in a defined position but not on the circumferential rectangular frame. This allows optimal adjustment of every receiving box 30.

[0095] It is also possible to omit the feet 30b so that the receiving box 30 rests on its circumferential rectangular frame, if sufficiently narrow tolerances are ensured.

[0096] On the whole the invention provides an advantageous apparatus and an advantageous method which allow simple, efficient handover to a filling station of open-mouth bags intended for filling and which are still empty. The bottom of the open-mouth bag 3 is conveyed into the receiving box 30 due to gravitation and supported by suctioning. Due to the suction through the suction apertures 34 the bag wall comes to rest form-fittingly against the receiving box 30 so that the open-mouth bag 3 assumes an ideal, desired shape even prior to filling. This achieves efficient and material-saving filling. Moreover an optically appealing shape of the filled open-mouth bag 3 is ensured. Moreover the dust hood 87 is enabled to safely enter into the receiving box 30 and in particular even into the opened bag 3.

[0097] The receiving boxes 30 guide the open-mouth bags 3 intended for filling during transport by means of the movable part 6. To enhance weighing the receiving box 30 at the weighing station is taken to a decoupling position to determine the weight remaining to be filled and in particular to control filling the remainder into the open-mouth bag in low speed flow. A number of stations are provided where the filled material is compacted. Vibrating is possible both from beneath and from above, or else a vacuum lance or a vibrating lance or the like may enter into the opened open-mouth bag 3 to carry out efficient deaeration and thus compacting.

TABLE-US-00001 List of reference numerals:  1 filling machine  2 filling carousel  3 open-mouth bag  4 bulk material  5 stationary part  6 movable part  7 weighing unit  8 rotation axis  9 deaeration duct 10 bag receiving unit 11-18 filling station 19 drive 20 retaining device 21-22 holder arm 23 suction duct 24 locking unit 25 covering hood 26 unlatching device 27 clamping cone 28 detector 29 lift 30 receiving box  30a lug  30b foot 31 receiving space  31a lower region  31b mid region  31c upper region 32 top end 33 bottom end 34 suction aperture 35 inner wall  35a separating web  35b separating web 36 outer wall 37 air chamber  37a air chamber  37b air chamber  37c air chamber 38 suction branch 39 service door 40 retaining link plate 41-48 handling station 50 bottom plate  50a groove  50b wire cloth 51-52 suction connection 53 gliding sleeve 54 recognition unit 55 base platform 56 weigh platform 57 momentum grade 58 momentum grade 60 handover station 61 swivel arm 62 receiving box 63 swivel position 64 swivel position 65 coupling rod 66 drive 70 bag source 71 film roll 72 sheet of film 73 shaping shoulder 75 locking position 76 decoupling position 79 spring 80 intermediate silo 81 motor for turbine 82 turbine 83 servo unit 84 compacting drive 85 height adjustment 86 filling pipe 87 dust hood 88 hose coupling 89 higher position