Bagging machine comprising two filling stations alternately fed by the same empty bag supply station
The bagging machine design with two filling stations and alternating opening systems optimizes bag opening and transfer, addressing inefficiencies in existing machines to increase packaging rates and reduce costs.
Patent Information
- Authority / Receiving Office
- FR · FR
- Patent Type
- Applications
- Current Assignee / Owner
- CETEC IND CONDITIONNEMENT
- Filing Date
- 2024-12-18
- Publication Date
- 2026-06-19
AI Technical Summary
Existing bagging machines face inefficiencies in filling and closing rates due to the time required for opening the bags, leading to reduced packaging rates, and solutions like using multiple machines or carousels are either costly or unsuitable for all bag sizes.
A bagging machine design with two filling stations fed by a single empty bag supply station, featuring an opening station with alternating spreading systems and a transverse conveyor to efficiently manage bag opening and transfer between stations, allowing for increased throughput without additional stations.
Enhances filling and closing rates by maintaining bags stationary for optimal times at filling and closing stations, achieving higher packaging efficiency while minimizing equipment footprint and cost compared to dual-machine setups.
Smart Images
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Abstract
Description
Title of the invention: Bagging machine comprising two filling stations alternately fed by the same empty bag supply station
[0001] The present application relates to a bagging machine comprising two filling stations supplied alternately by the same empty bag supply station.
[0002] According to an embodiment shown in [Fig. 1], a bag 10 comprises first and second walls 10.1, 10.2 parallel to each other, connected by a bottom 10.3 and by gussets 10.4 at their sides. Alternatively, the first and second walls may be directly connected to each other at their lateral sides, over part or all of their height. When the bag is empty, it has an opening 10.5 of varying size at its top. After filling, the opening 10.5 of the bag is closed. The bag 10 may include a zipper closure system at its opening to allow it to be closed after opening. This type of zipper closure system tends to reduce the cross-section of the opening 10.5. However, the smaller the cross-section of the opening 10.5, the longer the filling time.
[0003] According to various embodiments shown in Figures 2 to 4, a bagging machine, used to fill bags 10 one after the other, comprises a feeding station 12 for empty bags, a bag opening station 14 for a bag 10, a filling station 16 for a bag 10' with product, a closing station 18 for a bag 10" and a discharge system 20 for the filled bags. The bags 10, 10', 10" pass one after the other from one station to the other in a direction of travel DD.
[0004] The opening station 14, positioned upstream of the filling station 16, allows a bag to be positioned in an appropriate position prior to its introduction into the filling station 16 and to open the bag.
[0005] According to a first embodiment visible in figures 2 and 3, the bags 10, 10', 10" are oriented so that their first and second walls 10.1, 10.2 are substantially parallel to the scrolling direction DD at the opening, filling and closing stations 14, 16 and 18.
[0006] According to a configuration visible in [Fig. 3], the feeding station 12 and the opening station 14 are aligned in a direction perpendicular to the direction of travel DD. At the feeding station 12, the empty bags 10 are positioned flat, with the first and second walls 10.1, 10.2 of the bags being substantially horizontal. At the opening, filling, and closure 14, 16, 18, bags 10, 10', 10" are positioned vertically along the scrolling direction DD, the first and second walls 10.1, 10.2 of bags 10, 10', 10" being substantially vertical and parallel to the scrolling direction DD.
[0007] The opening station 14 includes a static spreading system which comprises first and second parts 14.1, 14.2 positioned on either side of the bag immobilized at the level of the opening station 14 and configured to occupy a close state in which the bag is closed and a spread state in which the bag is open.
[0008] According to the first embodiment visible in figures 2 and 3, the bagging machine includes a first transfer system 22 configured to take an empty and horizontal bag 10 from the feeding station 12, rotate it and position it vertically in the opening station 14. In addition, the bagging machine includes a conveying system 24 configured to take three bags 10, 10', 10" positioned respectively at the opening, filling and closing stations 14, 16, 18, transfer them along the direction of travel DD and then position them respectively at the filling and closing stations 16, 18 and the discharge system 20.
[0009] According to a second embodiment visible in [Fig.4], the bags 10, 10', 10" are oriented so that their first and second walls 10.1, 10.2 are substantially perpendicular to the direction of travel DD at the opening, filling and closing stations 14, 16, 18; the feeding station 12, the discharge station 20 as well as the opening, filling and closing stations 14, 16, 18 being aligned along the direction of travel DD.
[0010] At the feeding station 12, the empty bags 10 are positioned flat, with the first and second walls 10.1, 10.2 being substantially horizontal. At the opening, filling and closing stations 14, 16, 18, the bags 10, 10', 10" are positioned vertically and perpendicular to the direction of travel DD, with the first and second walls 10.1, 10.2 of the bags 10, 10', 10" being substantially vertical and perpendicular to the direction of travel DD.
[0011] Regardless of the embodiment, all bags pass, step by step, successively from one station to another.
[0012] The filling and closing stations 16, 18 are the two stations at which the bags must remain stationary for as long as possible. This period is longer the smaller the opening section of the bags.
[0013] Consequently, the rate of the bagging machine depends essentially on the time of filling and / or closing the bags at the filling and closing stations 16, 18 and the bag opening section.
[0014] To increase the bag packaging rate, one solution is to use two bagging machines. This solution is not satisfactory because it is relatively expensive and leads to an increased footprint.
[0015] Another solution involves installing a carousel, particularly at filling station 16, to increase the filling station's throughput. This solution is unsatisfactory because it complicates the filling station. Furthermore, it is not suitable for all bag sizes.
[0016] The present invention aims to remedy all or part of the drawbacks of the prior art.
[0017] For this purpose, the invention relates to a bagging machine configured to fill bags and comprising at least one empty bag feeding station located at the level of a scrolling straight, at least one opening station, at least one filling station, at least one closing station and at least one discharge station.
[0018] According to the invention, the bagging machine comprises first and second filling stations positioned respectively at the first and second lines parallel to the direction of travel, the latter being positioned equidistant from the first and second lines. In addition, the opening station has a first zone positioned at the first line, a second zone positioned at the second line, and a central zone positioned between the first and second zones and in line with the feeding station.The opening station also includes first and second spreading systems configured to open the bags one after the other, as well as a first transverse conveyor system, to which the first and second spreading systems are connected, configured to move alternately between a first position in which the first and second spreading systems are respectively positioned in the central zone and the second zone, and a second position in which the first and second spreading systems are respectively positioned in the first zone and the central zone.
[0019] This solution makes it possible to increase the rate due to the presence of two filling stations without increasing the number of stations as in the case of two bagging machines, the empty bag supply station feeding the two filling stations.
[0020] Other features and advantages will become apparent from the following description of the invention, given by way of example only, with reference to the accompanying drawings, among which:
[0021] [Fig. 1] is a perspective view of a bag,
[0022] [Fig.2] is a schematic side view representation of part of a bagging machine illustrating a first embodiment of the prior art, at a first instant on part (A) and at a second instant on part (B),
[0023] [Fig.3] is a schematic top view of a bagging machine illustrating a first embodiment of the prior art,
[0024] [Fig.4] is a schematic top view of a bagging machine illustrating a second embodiment of the prior art,
[0025] [Fig.5] is a schematic top view of a bagging machine illustrating a first embodiment of the invention, at four successive moments visible on parts (A), (B), (C) and (D),
[0026] [Fig.6] is a schematic top view of a bagging machine illustrating a second embodiment of the invention, at four successive moments visible on parts (A), (B), (C) and (D),
[0027] [Fig.7] is a schematic top view of a bagging machine illustrating a third embodiment of the invention, at a first instant on part (A) and at a second instant on part (B),
[0028] [Fig.8] is a schematic representation of a spacing system illustrating an embodiment in a close state on part (A) and a spread state on part (B),
[0029] [Fig.9] is a schematic lateral representation of the bagging machine visible in [Fig.5].
[0030] According to one embodiment, a bagging machine 30 is configured to fill bags 32 (evidently shown in particular in [Fig. 8]), each having first and second walls 32.1, 32.2, a base 32.3 connecting the first and second walls 32.1, 32.2 at a first end, and an opening 32.4 at a second end. Between the first and second ends, the first and second walls 32.1, 32.2 are directly connected to each other or connected via a gusset. The first and second walls 32.1, 32.2 respectively comprise first and second upper portions adjoining the opening of the bag 32. The bags 32 are not further described as they may be identical to those of the prior art.
[0031] The bagging machine 30 includes at least one feeding station 34 for empty bags at the level where the bags 32 are empty, at least one evacuation station 36, 36' at which the bags 32 are filled and closed, at least one first and second filling stations 38, 40 at each of which a bag 32 is temporarily immobilized and each configured for filling, and at least one first and second closing stations 42, 44 at each of which a bag 32 is temporarily immobilized and each configured for closing; the filling and closing stations 38, 40, 42, 44 being positioned between the station supply station 34 and evacuation station 36, supply station 34, first filling and closing stations 38, 42 and evacuation station 36 forming a first defile path 46, supply station 34, second filling and closing stations 40, 44 and evacuation station 36' forming a second defile path 48.
[0032] The supply and discharge stations 34, 36 are aligned along a flow direction DD, or the discharge stations 36 are positioned symmetrically with respect to a flow direction DD passing through the supply station 34, the first and second filling stations 38, 40 being positioned symmetrically with respect to the flow direction DD, and the first and second closing stations 42, 44 being positioned symmetrically with respect to the flow direction DD. According to one arrangement, the first filling and closing stations 38, 42 are aligned along a first line DI parallel to the flow direction DD. The second filling and closing stations 40, 44 are aligned along a second line D2 parallel to the flow direction DD. The flow direction DD is positioned equidistant from the first and second lines D1, D2, as well as between the first and second lines D1, D2.
[0033] At each of the first and second filling and closing stations 38, 40, 42, 44, each of the bags 32 is positioned vertically and perpendicular to the direction of scrolling DD, for each of them the first and second walls 32.1, 32.2 being substantially vertical and perpendicular to the direction of scrolling DD.
[0034] According to one configuration, each of the first and second filling and closing stations 38, 40, 42, 44 is configured to maintain a static bag, vertical and perpendicular to the scroll direction DD, for each of them the first and second walls 32.1, 32.2 being substantially vertical and perpendicular to the scroll direction DD.
[0035] The first and second filling and closing stations 38, 40, 42, 44 are not further described as they may be identical to those of the second embodiment of the prior art.
[0036] According to one configuration, the feeding station 34 is configured to convey, one after the other, empty flat bags 32 (their first and second walls being substantially horizontal). The feeding station 34 is not described further because it may be identical to that of the second prior art embodiment.
[0037] According to one embodiment, the bagging machine 30 comprises first and second discharge stations 36, 36', the first discharge station 36 being aligned with the first filling and closing stations 38, 42 along the first straight line D1, the second discharge station 36' being aligned with the second stations of filling and closing 40, 44 along the second straight line D2. By way of example, the first and second discharge stations 36, 36' are conveyors which join to form an outlet conveyor 36”. Of course, the invention is not limited to this embodiment for the first and second discharge stations 36, 36'.
[0038] The bagging machine 30 includes an opening station 50 which has a first zone 50.1 positioned at the right of the first straight line DI and aligned with the first filling and closing stations 38, 42, a second zone 50.2 positioned at the right of the second straight line D2 and aligned with the second filling and closing stations 40, 44 and a central zone 50.3 positioned between the first and second zones 50.1, 50.2 and in line with the feeding station 34, the first and second zones 50.1, 50.2 and the central zone 50.3 being aligned along a transverse direction DT substantially perpendicular to the direction of travel DD.The opening station 50 also includes a first spreading system 52 configured to open, one after the other, the bags 32 following the first scroll path 46, a second spreading system 54 configured to open, one after the other, the bags following the second scroll path 48, and a first transverse conveying system 56, to which the first and second spreading systems 52, 54 are connected, configured to move alternately along the transverse direction DT.
[0039] According to a first embodiment shown in [Fig. 5], the first and second zones 50.1, 50.2 are respectively positioned at the first and second filling stations 38, 40. The central zone 50.3 is positioned between the first and second filling stations 38, 40. As illustrated in [Fig. 9], the first and second filling stations 38, 40 and the various zones 50.1, 50.2, 50.3 of the opening station 50 are positioned in the same transverse plane (perpendicular to the direction of travel DD). According to this first embodiment, the opening station 50 is partially nested with the first and second filling stations 38, 40, which contributes to obtaining a more compact assembly.
[0040] According to a second embodiment, the first and second zones 50.1, 50.2 are offset relative to the first and second filling stations 38, 40 and positioned upstream (according to the direction of bag flow) of the first and second filling stations 38, 40. Thus, the opening station 50 and its various zones 50.1, 50.2, 50.3 are offset along the longitudinal direction relative to the first and second filling stations 38, 40. According to this second embodiment, the opening station 50 is separate from the first and second filling stations 38, 40.
[0041] In a first position visible in parts (A) and (B) of figures 5 and 6, the first spacing system 52 is positioned in the first zone 50.1, at the right or at the level of the first filling station 38, and the second spacing system 54 is positioned in the central zone 50.3 in line with the supply station 34. In a second position visible in parts (C) and (D) of figures 5 and 6, the first spacing system 52 is positioned in the central zone 50.3, in line with the supply station 34, and the second spacing system 54 is positioned in the second zone 50.2, at the right or at the level of the second filling station 40.
[0042] Each of the first and second spacing systems 52, 54 is configured to occupy a close state (visible in part (A) of [Fig. 5] for the second spacing system 54) corresponding to the closed state of the bag and a spread state (visible in part (A) of [Fig. 5] for the first spacing system 52) corresponding to the open state of the bag, each of the first and second spacing systems 52, 54 changing from the close state to the spread state when the first or second spacing system 52, 54 passes from the central part 50.3 to the first or second zone 50.1, 50.2, each of the first and second spacing systems 52, 54 changing from the spread state to the close state when the first or second spacing system 52, 54 passes from the first or second zone 50.1, 50.2 towards the central part 50.3.
[0043] As illustrated in [Fig. 8], each of the first and second spacing systems 52, 54 comprises first and second elements 52.1, 52.2, 54.1, 54.2 configured to be positioned on either side of a bag 32, at least one of the first and second elements 52.1, 52.2, 54.1, 54.2 being movable in a direction parallel to the scrolling direction DD. To this end, each of the first and second spacing systems 52, 54 comprises an actuator 58 for moving at least one of the first and second elements 52.1, 52.2, 54.1, 54.2 from the close-positioned state to the spread-out state and vice versa. As an example, each of the first and second elements 52.1, 52.2, 54.1, 54.2 includes at least one suction cup, which cooperates with the upper portion of the first or second wall 32.1, 32.2, configured to occupy an activated state in which the first or second wall 32.1, 32.2 is attached to the suction cup and follows the movement of the first or second element 52.1, 52.2, 54.1, 54.2 so as to pass from the closed state to the open state as well as a deactivated state in which the suction cup is detached from the first or second wall 32.1, 32.2. .
[0044] The first and second spacing systems 52, 54 are not further described as they may be identical to that of the second embodiment of the prior art.
[0045] According to the first embodiment shown in [Fig. 5], the bagging machine 30 comprises: a. a transfer system configured to grasp a bag 32 located at the feeding station 34 and transfer it to the central zone 50.3 of the opening station 50 in the first or second spacing system 52, 54, the first and second walls 32.1, 32.2 being close together and perpendicular to the direction of travel DD, b. a first conveying system configured to simultaneously take two bags positioned respectively at the first filling station 38 and the first closing station 42 and transfer them respectively to the first closing station 42 and the first discharge station 36, c. a second conveying system configured to simultaneously take two bags positioned respectively at the second filling station 40 and the second closing station 44 and transfer them respectively to the second closing station 44 and the second evacuation station 36'.
[0046] According to this first embodiment, the first transverse conveying system 56 ensures an alternating transfer of bags from the central zone 50.3 of the opening station 50 to the first filling station 38 or from the central zone 50.3 of the opening station 50 to the second filling station 40.
[0047] According to the second embodiment shown in [Fig. 6], the first conveying system is configured to simultaneously take three bags positioned respectively at the level of the first zone 50.1 of the opening station 50, the first filling station 38 and the first closing station 42 and then transfer them respectively to the first filling station 38, the first closing station 42 and the first discharge station 36. Similarly, the second conveying system is configured to simultaneously take three bags positioned respectively at the level of the second zone 50.2 of the opening station 50, the second filling station 40 and the second closing station 44 and then transfer them respectively to the second filling station 40, the second closing station 44 and the second discharge station 36'.
[0048] The transfer system and the first and second conveying systems are not further described as they may be identical to those of the second prior art mode.
[0049] The operating principle of the bagging machine 30 according to the first embodiment is described with reference to [Fig.5].
[0050] At a first instant visible on part (A) of [Fig.5], an empty bag SI in the closed state is positioned at the level of the feeding station 34.
[0051] As illustrated in part (B) of [Fig. 5], the empty, closed bag SI is introduced into the second spreading system 54 of the opening station 50 located in the central zone 50.3. Simultaneously, the bags S2 and S3 present in the second filling station 40 and the second closing station 44 are transferred to the second closing station 44 and the second discharge station 36', respectively. The bags S4 and S5 present in the first filling station 38 and the first closing station 42 remain stationary.
[0052] As illustrated in part (C) of [Fig. 5], the empty bag SI, positioned in the second spacing system 54, is transferred to the second filling station 40. During this transfer, the second spacing system 54 moves from the closed to the closed state, causing the bag SL to open. The bag SL is then ready for filling. Simultaneously, the first spacing system 52 returns to the central zone 50.3 of the opening station 50 and moves from the closed to the closed state to be ready to receive a new bag S6 positioned at the feeding station 34.
[0053] As illustrated in part (D) of [Fig.5], the empty and closed bag S6 is introduced into the first spreading system 52 of the opening station 50 located in the central zone 50.3. In parallel, the bags S4, S5 present respectively in the first filling station 38 and the first closing station 42 are respectively transferred to the first closing station 42 and the first evacuation station 36. The bags SI, S2 present in the second filling station 40 and the second closing station 44 remain static.
[0054] As illustrated in part (A) of [Fig. 5], the empty bag S6, positioned in the first spreading system 52, is transferred to the first filling station 38. During this transfer, the first spreading system 52 moves from the closed to the open state, causing the bag S6 to open. The bag is then ready for filling. Simultaneously, the second spreading system 54 returns to the central zone 50.3 of the opening station 50 and moves from the open to the closed state to be ready to receive a new bag.
[0055] This cycle, comprising the different steps previously described and visible on parts (A), (B), (C) and (D), is subsequently repeated.
[0056] The operating principle of the bagging machine 30 according to the second embodiment is described with reference to [Fig.6].
[0057] At a first instant visible on part (A) of [Fig.6], an empty bag SI in the closed state is positioned at the level of the feeding station 34.
[0058] As illustrated in part (B) of [Fig. 6], the empty, closed bag SI is introduced into the second spacing system 54 of the opening station 50. Simultaneously, the bags S2, S3, and S4 present in the second zone 50.2 of the station are introduced. At opening station 50, the second filling station 40 and the second closing station 44 are respectively transferred to the second filling station 40, the second closing station 44 and the second evacuation station 36'. The bags S5, S6, S7 present in the first zone 50.1 of opening station 50, the first filling station 38 and the first closing station 42 remain static.
[0059] As illustrated in part (C) of [Fig. 6], the empty bag SI, positioned in the second spacing system 54, is transferred to the second zone 50.2 of the opening station 50. During this transfer, the second spacing system 54 moves from the closed to the closed state, causing the bag SL to open. The bag SL is then ready for filling. Simultaneously, the first spacing system 52 returns to the central zone 50.3 of the opening station 50 and moves from the closed to the closed state to be ready to receive a new bag S8 positioned at the feeding station 34.
[0060] As illustrated in part (D) of [Fig.6], the empty and closed bag S8 is introduced into the first spreading system 52 of the opening station 50. In parallel, the bags S5, S6, S7 present in the first zone 50.1 of the opening station 50, the first filling station 38 and the first closing station 42 are respectively transferred to the first filling station 38, the first closing station 42 and the first evacuation station 36. The bags S1, S2, S3 present in the second zone 50.2 of the opening station 50, the second filling station 40 and the second closing station 44 remain static.
[0061] As illustrated in part (A) of [Fig. 6], the empty bag S8, positioned in the first spacing system 52, is transferred to the first zone 50.1 of the opening station 50. During this transfer, the first spacing system 52 moves from the closed to the closed state, causing the bag S8 to open. The bag is then ready for filling. Simultaneously, the second spacing system 54 returns to the central zone 50.3 of the opening station 50 and moves from the closed to the closed state to be ready to receive a new bag.
[0062] This cycle, comprising the different steps previously described and visible on parts (A), (B), (C) and (D), is subsequently repeated.
[0063] According to the invention, each bag remains stationary for the duration of two steps at the first and second filling and closing stations 38, 40, 42, 44. This solution makes it possible to increase the rate or increase the filling rate while maintaining the rate compared to existing equipment, which corresponds to packaging economy while limiting the number of stations compared to the number of stations of two bagging machines.
[0064] According to a third embodiment shown in [Fig. 7], the bagging machine 30 comprises first and second filling stations 38, 40, a single station of closure 42 and a second transverse conveying system 60 interposed between the first and second filling stations 38, 40 and the closing station 42.
[0065] According to one configuration, the second transverse conveying system 60 has a first zone 60.1 positioned at the right of the first straight line DI and aligned with the first filling station 38, a second zone 60.2 positioned at the right of the second straight line D2 and aligned with the second filling station 40 and a central zone 60.3 positioned between the first and second zones 60.1, 60.2 and positioned in the extension of the closing station 42, the first and second zones 60.1, 60.2 and the central zone 60.3 being aligned along a transverse direction DT substantially perpendicular to the direction of travel DD.
[0066] The second transverse conveying system 60 also includes a first support 62 configured to support a bag exiting from the first filling station 38, a second support 64 configured to support a bag exiting from the second filling station 40 and a second transverse conveying system 66, to which the first and second supports 62, 64 are connected, configured to move alternately in the transverse direction DT.
[0067] In a first position visible on part (A) of [Fig.7], the first support 62 is positioned in the central zone 60.3 opposite the closing station 42 and the second support 64 is positioned in the second zone 60.2 opposite the second filling station 40. In a second position visible on part (B) of [Fig.7], the first support 62 is positioned in the first zone 60.1 opposite the first filling station 38 and the second support 64 is positioned in the central zone 60.3 in line with the closing station 42.
[0068] The bags positioned on the first and second supports 62, 64 are in the open or closed state.
[0069] In an alternative, the bagging machine 30 comprises first and second filling and closing stations 38, 40, 42, 44, a single discharge station 36 and a second transverse conveying system 60 interposed between the first and second closing stations 42, 44 and the discharge station 36. According to this alternative, the first and second supports 60, 64 are each configured to support a closed bag, the first support 62 being configured to support a bag exiting the first closing station 42, the second support 64 being configured to support a bag exiting the second closing station 44.
Claims
Demands
1. Bagging machine configured to fill bags (32) and comprising at least one empty bag feeding station (34) located at the level of a scroll line (DD), at least one opening station (50), at least one filling station (38, 40), at least one closing station (42, 44) as well as at least one discharge station (36, 36'), characterized in that the bagging machine comprises first and second filling stations (38, 40) positioned respectively at the first and second lines (D1, D2) parallel to the scroll direction (DD), the latter being positioned equidistant from the first and second lines (D1, D2); in that the opening position (50) has a first zone (50.1) positioned at the right of the first line (D1), a second zone (50.2) positioned at the right of the second line (D2) as well as a central zone (50.3) positioned between the first and second zones (50.1, 50.2) and in the extension of the feeding station (34); and in this the opening station (50) also includes first and second spreading systems (52, 54) configured to open, one after the other, the bags (32) as well as a first transverse conveying system (56), to which are connected the first and second spreading systems (52, 54), configured to move alternately between a first position in which the first and second spreading systems (52, 54) are respectively positioned in the central zone (50.3) and the second zone (50.2) and a second position in which the first and second spreading systems (52, 54) are respectively positioned in the first zone (50.1) and the central zone (50.3).
2. Bagging machine according to claim 1, characterized in that the first and second zones (50.1, 50.2) as well as the central zone (50.3) are aligned along a transverse direction (DT) perpendicular to the scrolling direction (DD), the first transverse conveying system (56) being configured to move along the transverse direction (DT).
3. Bagging machine according to any one of the preceding claims, characterized in that each of the first and second spacing systems (52, 54) is configured to occupy a corresponding close state in the closed state of the bag as well as a spread state corresponding to the open state of the bag, each of the first and second spread systems (52, 54) passing from the close state to the spread state when the first or second spread system (52, 54) passes from the central part (50.3) to the first or second zone (50.1, 50.2), each of the first and second spread systems (52, 54) passing from the spread state to the close state when the first or second spread system (52, 54) passes from the first or second zone (50.1, 50.2) to the central part (50.3).
4. Bagging machine according to any one of the preceding claims, characterized in that the first and second zones (50.1, 50.2) are respectively positioned at the level of the first and second filling stations (38, 40), the central zone (50.3) being positioned between the first and second filling stations (38, 40).
5. Bagging machine according to any one of claims 1 to 3, characterized in that the first and second zones (50.1, 50.2) are offset from the first and second filling stations (38, 40) and positioned upstream of said first and second filling stations.
6. Bagging machine according to any one of the preceding claims, characterized in that the bagging machine comprises first and second closing stations (42, 44) positioned respectively at the level of the first and second straights (D1, D2).
7. Bagging machine according to the preceding claim, characterized in that the bagging machine comprises first and second discharge stations (36, 36'), the first discharge station (36) being aligned with the first filling and closing stations (38, 42), the second discharge station (36') being aligned with the second filling and closing stations (40, 44).