Production unit comprising a functional base and a feeding module

Abstract

Title: Production assembly comprising a functional base and a feeding module. The invention relates to a production assembly (1) comprising: a functional base (2) comprising a machine support frame (4) adapted to support an automated manufacturing machine, the functional base (2) comprising a first protective assembly (5) comprising a first set of walls (6) and a first opening (7), a feeding module (3) attached to the functional base (2) and comprising a second protective assembly (11) comprising a second set of walls (12) and a second opening (13), a protective panel (14), the protective panel (14) being adapted to close the first opening (7) while leaving the second opening (13) open. Figure for the abstract: Fig. 1

Description

Title of the invention: Production assembly comprising a functional base and a feeding module

[0001] The invention relates to a production assembly comprising a functional base and a feeding module.

[0002] A production set is known comprising: - a functional base comprising a machine support frame suitable for supporting an automated manufacturing machine, including a screwing machine, a fluid dispensing machine, a marking machine, a crimping machine, a part pick-and-place machine, a cleaning machine, a heat treatment machine, a surface preparation machine or a welding machine, - a feeding module attached to the functional base and comprising a feeding frame and a mobile trolley that translates along a first axis on the frame, the mobile trolley comprising a carrying area, the carrying area being capable of carrying and moving a workpiece support, - a second protective assembly (11) suitable for protecting the operator during the operation of the feeding module (3), the second protective assembly (11) comprising a second set of walls (12) and a second opening (13), the functional base and the feeding module comprising a single protective assembly suitable for protecting an operator during the operation of the automated manufacturing machine and the feeding module, the protective assembly comprising a set of walls suitable for surrounding the production machine and the mobile trolley during its translation.

[0003] Such a production unit has the disadvantage of not being modular. Indeed, it is necessary to dismantle the protective assembly if one wishes to associate the functional base with another feeding module, or if one wishes to associate the feeding module with another functional base, or if one wishes to associate the production unit with an additional feeding module.

[0004] The present invention aims to eliminate all or part of these drawbacks.

[0005] The invention relates to a production unit (1) comprising: - a functional base (2) comprising a machine support frame (4) suitable for supporting an automated manufacturing machine, in particular a screwing machine, a fluid dispensing machine, a marking machine, a crimping machine, a part pick-and-place machine, a cleaning machine, a heat treatment machine, a surface preparation machine or a welding machine, the functional base comprising a first set of protection suitable for protecting an operator during the operation of the automated manufacturing machine, the first set of protection comprising a first set of walls and a first opening, - a feeding module attached to the functional base and comprising a feeding chassis and a mobile trolley moving along a first axis on the chassis, the mobile trolley comprising a carrying area, the carrying area being suitable for carrying and moving a workpiece support, the feeding module comprising a second set of protection suitable for protecting the operator during the operation of the feeding module, the second set of protection comprising a second set of walls and a second opening, - a protective panel, the protective panel being able to close the first opening while leaving the second opening open and the protective panel being able to close the second opening while leaving the first opening open.

[0006] Such a production assembly improves the flexibility of a production line, i.e., it makes it easier to change the feeding module and / or the functional base. Indeed, such a production assembly allows a protective panel to be attached to a functional base. When a feeding module is attached to this functional base, the protective panel is removed from the functional base and mounted on the feeding module. The initial opening of the functional base, left without a protective panel, creates a passage between the feeding module and the functional base, allowing the movement of a part between the feeding module and the functional base and / or the passage of a part of the automated production machine to perform a manufacturing operation on the part carried by the feeding module.In parallel, the protective panel can be mounted in the second opening of the feed module to ensure the protection of the operators.

[0007] According to a further feature of the invention, the protective panel includes a door, in particular a hinged door.

[0008] According to an additional feature of the invention, the protective panel is fixed in the first opening or is fixed in the second opening by means of a fixing means in particular a fixing means comprising a screw.

[0009] According to a further feature of the invention, the first opening and the second opening comprise a base having a freeing shape, in particular an inclined shape or a curved shape, so that the protective panel remains in the first or second opening only if it is fixed by means of the fixing means.

[0010] The use of such an opening comprising a base with a freeing shape This improves operator safety. The design prevents the protective panel from being mounted without using the fixing device.

[0011] According to a further feature of the invention, the feeding frame comprises a first lateral fixing zone and a first attachment device fixed to the first lateral fixing zone and in which the functional base comprises a second attachment device, the first attachment device and the second attachment device being joined together so as to join the feeding module and the functional base.

[0012] According to a further feature of the invention, one of the first fastening device and the second fastening device comprises at least one first male fastening element and the other of the first fastening device and the second fastening device comprises at least one first female fastening element, the at least one first male fastening element being inserted into the at least one first female fastening element.

[0013] According to a further feature of the invention, that of the first fastening device and of the second fastening device which includes at least one first female fastening element further includes at least one first locking element, the at least one first locking element blocking the first male fastening element in the first female fastening element.

[0014] Such first attachment device and second attachment device make it possible to reduce the time required for the securing and relative positioning between the feed chassis and the functional base.

[0015] According to a further feature of the invention, the at least first male fastening element is inserted into the at least first female fastening element in a first insertion direction, and in which the at least first locking element is inserted into the at least first female fastening element in a second insertion direction different from the first insertion direction.

[0016] According to an additional feature of the invention, the first insertion direction is perpendicular to the second insertion direction.

[0017] According to a further feature of the invention, the first insertion direction is vertical and in which the second insertion direction is horizontal, the second insertion direction being in particular parallel to the first lateral fixing zone.

[0018] Other features, details and advantages of the invention will become clearer upon reading the following description on the one hand, and several illustrative and non-limiting examples of embodiments given with reference to the accompanying schematic drawings on the other hand, in which:

[0019] [Fig.1] Fig.1 is a partial exploded schematic view of a production set according to the invention;

[0020] [Fig.2] The [Fig.2] is a schematic view of a protective panel of the production assembly of the [Fig.1];

[0021] [Fig.3] The [Fig.3] is a partial schematic view of the production assembly of the [Fig.1];

[0022] [Fig.4] The [Fig.4] is a partial schematic cross-sectional view of the production assembly of the [Fig.1]

[0023] [Fig.5] The [Fig.5] is a schematic detail view of the [Fig.4];

[0024] [Fig.6] Fig.6 is a schematic detail view of a functional base of the entire production of the [Fig.1];

[0025] [Fig.7] The [Fig.7] is a schematic view of a fixing assembly for the functional base of the production assembly of the [Fig.1];

[0026] [Fig.8] The [Fig.8] is a schematic detail view of the fastening assembly of the [Fig.7];

[0027] [Fig.9] The [Fig.9] is a partial schematic view of a second embodiment of a fixing assembly for the functional base of the production assembly of the [Fig.1];

[0028] [Fig. 10] The [Fig. 10] is a partial schematic cross-sectional view of the functional base of the production assembly of the [Fig.1];

[0029] [Fig. 11] The [Fig. 11] is a partial schematic view of a feed module of the production assembly of the [Fig.1];

[0030] [Fig. 12] The [Fig. 12] is a partial schematic detail view of the feed module of the [Fig. 11];

[0031] [Fig. 13] The [Fig. 13] is another partial schematic view of the feed module of the [Fig. 11];

[0032] [Fig. 14] The [Fig. 14] is another partial schematic view of the feed module of the [Fig. 11];

[0033] [Fig. 15] The [Fig. 15] is another partial schematic view of the feed module of the [Fig. 11];

[0034] [Fig. 16] The [Fig. 16] is a partial schematic view of an opening of the production assembly of the [Fig.1].

[0035] In all the figures, identical elements or elements performing the same function bear the same reference numerals. The following embodiments are examples. Although the description refers to one or more embodiments, this does not necessarily mean that each reference numeral relates to the same embodiment or that the features apply only to a single embodiment. Simple features from different embodiments can also be combined or interchanged to provide other outputs.

[0036] Ordinal numeral adjectives are used to differentiate features. They do not define the position of a feature. Therefore, for example, a third feature of a product does not mean that the product has a first and / or a second feature.

[0037] The features, variants, and different embodiments of the invention can be combined in various ways, provided they are not incompatible or mutually exclusive. In particular, variants of the invention may be conceived comprising only a selection of features, described hereafter in isolation from the other described features, if this selection of features is sufficient to confer a technical advantage and / or to differentiate the invention from the prior art.

[0038] Fig. 1 represents a partial exploded view of a production unit 1 comprising a functional base 2, a feed module 3 and a protective panel 14.

[0039] The functional base 2 comprises a machine support frame 4 suitable for supporting an automated manufacturing machine, in particular a screwing machine, a fluid dispensing machine, a marking machine, a crimping machine, a part pick-and-place machine, a cleaning machine, a heat treatment machine, a surface preparation machine, or a welding machine. The automated manufacturing machine is not shown in the various figures.

[0040] The functional base 2 further comprises a first protective assembly 5 suitable for protecting an operator during the operation of the automated manufacturing machine. The first protective assembly 5 comprises a first set of walls 6 and a first opening 7. The first set of walls 6 forms, for example, a first housing 62 suitable for receiving the automated manufacturing machine.

[0041] The walls of the first set of walls 6 are, for example, glazed walls or wire mesh walls. The first set of walls 6 may also include a first roof 63 at an upper end of the set of walls 6.

[0042] The feeder module 3 is secured with the functional base 2 as shown in [Fig.3].

[0043] As shown in [Fig. 11], [Fig. 12], [Fig. 13], [Fig. 14], and [Fig. 15], the feeding module 3 comprises a feeding frame 8 and a mobile carriage 9 that translates along a first axis X on the frame. The X axis is, for example, horizontal. The mobile carriage 9 comprises a carrying area 10. The carrying area 10 is suitable for To carry and move a workpiece support. The workpiece support is not shown in the figures. The carrying area 10 includes, for example, positioning studs 64 so as to position the workpiece support on the carrying area 10.

[0044] The mobile carriage 9 is, for example, guided on the feed frame 8 by a first set of rails 65. In the embodiment shown in the figures, the first set of rails 65 comprises two rails. In another embodiment not shown, the first set of rails comprises a single rail.

[0045] The feeding module 3 may include a feeding mechanism 29 comprising a first subsystem 30 linked in the direction of the first axis X to the feeding frame 8 and a second subsystem 31 linked in the direction of the first axis X to the mobile carriage 10.

[0046] The first subsystem 30 or the second subsystem 31 may include a first nut 32 and the other of the first subsystem 30 and of the second subsystem 31 may include a first screw 33 engaging in the first nut 32, the rotation of the first screw 33 causing the translation of the mobile carriage 9.

[0047] In another embodiment not shown, the first screw is fixed in rotation and the first nut is mobile in rotation.

[0048] As shown in [Fig. 14] and [Fig. 15], the first subsystem 30 may include a first electric motor 72 driving a first transmission member 73, in particular a belt or a chain, the first transmission member 73 driving the first screw 33 in rotation, for example by means of a first pulley 74 linked in rotation to the first screw 33.

[0049] The feed module 3 includes a second protective assembly 11 suitable for protecting the operator during the operation of the feed module 3. The second protective assembly 11 includes a second set of walls 12 and a second opening 13. The second set of walls 12 forms, for example, a second housing 66 in which the mobile trolley 9 can move.

[0050] The walls of the second set of walls 12 are, for example, glazed walls or wire mesh walls. The second set of walls 12 may also include a second roof 67 at an upper end of the second set of walls 12.

[0051] The protective panel 14 is suitable for closing the first opening 7 while leaving the second opening 13 open. The protective panel 14 is suitable for closing the second opening 13 while leaving the first opening 7 open as shown in [Fig. 1].

[0052] As shown in [Fig. 2], the protective panel 14 may include a door 15, in particular a hinged door. The door 15 is, for example, connected to the rest of the protective panel by a set of hinges 68. The door 15 includes, for example, a first handle 69. The protective panel 14 includes, for example, a glazed area and / or a wire-mesh area.

[0053] The protective panel 14 is fixed in the first opening 7 or is fixed in the second opening 13 by means of a fixing means 16 in particular a fixing means comprising a screw 17. In the embodiment shown in the figures the fixing means 16 comprises four screws 17. In another embodiment not shown, the fixing means comprises a bolt.

[0054] The first opening 7 and the second opening 13 comprise, for example, a base 18 having a recessed shape 19 such that the protective panel 14 remains in the first opening 7 or the second opening 13 only when it is secured by means of the fastening means 16. As shown in [Fig. 16], the recessed shape 19 is, for example, an inclined shape. In another embodiment not shown, the recessed shape is a curved shape, for example, a circular cylindrical shape.

[0055] The protective panel 14 includes a second carrying handle 70. In the embodiment shown in the figures, the protective panel 14 includes three carrying handles 70.

[0056] As shown in [Fig. 3], the first protective assembly 5 may include a third opening 71, and the production assembly may include another protective panel 14 suitable for closing the third opening 71. The third opening 71 is, for example, opposite the first opening 7 in the first protective assembly. The third opening 71 has, for example, characteristics similar to the first opening 7 and the second opening 13; in particular, the third opening 71 may include a base 18 having a clear shape.

[0057] The feed frame 8 may include a first lateral attachment zone 20. A first attachment device 21 may be attached to the first lateral attachment zone 20. The functional base 2 may include a second attachment device 22. The first attachment device 21 and the second attachment device 22 may be joined together to secure the feed module 3 and the functional base 2. All six degrees of freedom between the feed frame 8 and the functional base 2 are, for example, blocked when the first attachment device 21 and the second attachment device 22 are joined together.

[0058] One of the first fastening devices 21 and the second fastening devices 22 comprises at least one first male fastening element 23, and the other of the first fastening devices 21 and the second fastening devices 22 comprises at least one first female fastening element 24. The at least one first male fastening element 23 is, for example, inserted into the at least one first female fastening element 24. In the embodiment shown in the figures, the first device The attachment device 21 comprises four first male attachment elements 23 and the second attachment device 22 comprises four first female attachment elements 24.

[0059] In another embodiment not shown, the first fastening device comprises four first female fastening elements and the second fastening device comprises four first male fastening elements.

[0060] In another embodiment not shown, the first fastening device comprises at least one first male fastening element and at least one first female fastening element and the second fastening device comprises at least one first female fastening element and at least one first male fastening element.

[0061] In another embodiment not shown, the first fastening device comprises a single first male fastening element or a single first female fastening element and the second fastening device comprises respectively a single first female fastening element or a single first female fastening element.

[0062] As shown in [Fig.4], [Fig.5] and [Fig.6], that of the first fastening device 21 and of the second fastening device 23 which includes at least one first female fastening element 24 further includes at least one first locking element 25. The at least one first locking element 25 locking the first male fastening element 23 in the first female fastening element 24.

[0063] The at least first male fastening element 23 is inserted into the at least first female fastening element 24 in a first insertion direction 26. The at least first locking element 25 is inserted into the at least first female fastening element in a second insertion direction 27 different from the first insertion direction 26. For example, the first insertion direction 26 is perpendicular to the second insertion direction 27. For example, the first insertion direction 26 is vertical and the second insertion direction 27 is horizontal. The second insertion direction 27 is, for example, parallel to the first lateral fastening zone 20.

[0064] The mobile trolley 9 may include a lifting mechanism 28 allowing the height of the carrying platform 10 to be adjusted along a third axis Z. The third axis Z is, for example, perpendicular to the first axis X. The third axis Z is, for example, vertical.

[0065] Figure 14 shows the feeding module 3 with the carrying platform 10 at a height corresponding to a low position. Figure 15 shows the feeding module 3 with the carrying platform 10 at a height corresponding to a high position.

[0066] The mobile carriage 9 may include a mobile base 34. The lifting mechanism 28 may include a third subsystem 35 linked in the direction of the third Z-axis to the mobile base 34 and a fourth subsystem 36 linked in the direction of the third axis Z to the carrying platform 10.

[0067] For example, the third subsystem 35 or the fourth subsystem 36 includes a second nut 37 and the other of the third subsystem 25 and of the fourth subsystem 36 includes a second screw 38 engaging in the second nut 37, the rotation of the second screw 38 causing the change in the height of the carrying platform 10.

[0068] In another embodiment not shown, the second screw is fixed in rotation and the second nut is mobile in rotation.

[0069] As shown in [Fig. 12], the third subsystem 35 may include a second electric motor 74 driving a second transmission member 75, in particular a belt or a chain, the second transmission member 75 driving the second screw 38 in rotation, for example, by means of a second pulley 76 linked in rotation to the second screw 38.

[0070] The carrying platform 10 is, for example, guided on the mobile base 34 by a second set of slides 77. In the embodiment shown in the figures, the second set of slides 77 comprises two slides. In another embodiment not shown, the second set of slides comprises a single slide.

[0071] The feed module 3 may include a second movement assembly 39. The second movement assembly 39 includes, for example, a set of at least three casters, at least one of which is a swivel caster. In the embodiment shown in the figures, the second movement assembly 39 includes four swivel casters.

[0072] The second movement assembly 39 can be height-adjustable. For example, in the embodiment shown in the figures, the second movement assembly 39 comprises four height-adjustable casters.

[0073] The fitting module 3 may also include a support 61 suitable for resting on the ground 56.

[0074] In another embodiment not shown, the fitting module 3 includes a plurality of crutches.

[0075] The functional base 2 may include a fastening assembly 40 and the machine support frame 4. The fastening assembly 40 is not shown in [Fig. 1] and [Fig. 3]. [Fig. 7] and [Fig. 8] show a first embodiment of the fastening assembly 40. [Fig. 9] shows a second embodiment of the fastening assembly 40.

[0076] The fixing assembly 40 can be fixed to the floor 56. The fixing assembly 40 can include a fixing support 41 comprising an upper fixing area 42. A third fastening device 43 can be fixed to the upper fixing area 42.

[0077] The machine support frame 4 includes, for example, a frame 51, in particular a metal frame. The frame 51 is, for example, a welded metal frame. The frame may include a lower mounting area 52. A fourth attachment device 44 may be fixed to the lower mounting area 52.

[0078] The fourth fastening device 44 can be secured with the third fastening device 43 of the fastening assembly 40 fixed to the floor 56. The set of six degrees of freedom between the machine support frame 4 and the fastening assembly 40 are, for example, blocked when the third fastening device 43 and the fourth fastening device 44 are secured.

[0079] The fastening assembly 40 is separate from the machine support chassis 4.

[0080] The fixing assembly 40 may include an upgrade assembly 46.

[0081] The leveling assembly 46 may include at least three feet 47, at least two of which are height-adjustable. In the first embodiment of the mounting assembly shown in [Fig. 7] and [Fig. 8], the leveling assembly 46 includes four height-adjustable feet 47. In the first embodiment of the mounting assembly 40, the mounting support 41 is a mounting frame 50. The mounting frame 50 is, for example, a metal mounting frame, in particular a welded metal mounting frame. The mounting frame 50 is, for example, fixed to the ground by screws or anchor bolts 80.

[0082] In the second embodiment of the fixing assembly 40 shown in [Fig.9], the fixing support 41 is a fixing plate 78. The fixing plate 78 is for example fixed to the ground by screws 79 or anchor bolts.

[0083] The upper fixing zone 42 has a first height, the first height being measured between a lower surface 48 of the leveling assembly 46 and an upper surface 49 of the third fastening device 43, the first height being between 5 cm and 25 cm. The lower surface 48 of the leveling assembly 46 is suitable for resting on the ground 56.

[0084] The machine support frame 4 may include at least one lifting cavity 60 suitable for receiving a fork of a pallet truck or a fork of a forklift.

[0085] The machine support frame 4 may also include a first movement assembly 53, in particular an assembly of at least three casters of which at least one of the three casters is a swivel caster, the first movement assembly 53 being fixed to the lower fixing area 52. In the embodiment shown in the figures the first movement assembly 53 comprises four casters.

[0086] For example, one of the third attachment device 43 and the fourth attachment device 44 comprises at least one second male attachment element 54, and the other of the third attachment device 43 and the fourth attachment device 44 comprises a second female attachment element 55. The at least one second male element of fastener 54 is inserted into at least one second female fastener element 55.

[0087] In the first embodiment of the fastening assembly 40 shown in [Fig.7] and [Fig.8], the third fastening device 43 comprises four second male fastening elements 54. The four second male fastening elements 54 are fixed to the fastening frame 50.

[0088] In the second embodiment of the fastening assembly 40 shown in [Fig. 9], the fastening assembly 40 comprises several fastening plates 78, each carrying a second male fastening element 54 or a second female fastening element 55 of the third fastening device 43. In [Fig. 9], only one fastening plate 78 of the fastening assembly 40 is shown. The fastening assembly 40 comprises, for example, four fastening plates 78. In the second embodiment, the fastening plates 78 carry a second female fastening element 55.

[0089] In another embodiment not shown, the fixing plates 78 carry a second male fixing element.

[0090] In another embodiment not shown, part of the fixing plates carries a second male fixing element and another part of the fixing plates carries a second female fixing element.

[0091] Each mounting plate 78 can also be upgraded by an upgrade set 46.

[0092] As shown in [Fig. 10], the third attachment device 43 and the fourth attachment device 44 which includes at least one second female attachment element 55 may further include at least one second locking element 57, the at least one second locking element 57 locking the second male attachment element 54 in the second female attachment element 55. For example, the second locking element 57 fits into a groove formed in the second male attachment element 54.

[0093] The at least one second male fastening element 54 is, for example, inserted into the at least one second female fastening element 55 along a third insertion direction 58. The at least one second locking element 57 is inserted into the at least one second female fastening element 55 in a fourth insertion direction 59 different from the third insertion direction 58. For example, the fourth insertion direction 59 is perpendicular to the third insertion direction 58.

[0094] The first movement assembly 53 can be at a distance from the ground 56. For example, the casters of the first movement assembly 53 shown in the figures do not touch the ground when the machine support frame 4 is fixed to the mounting assembly 40 using the third attachment device and the fourth device attachment.

Claims

Demands

1. Production assembly (1) comprising: - a functional base (2) including a machine support frame (4) suitable for supporting an automated manufacturing machine, in particular a screwing machine, a fluid dispensing machine, a marking machine, a crimping machine, a part pick-and-place machine, a cleaning machine, a heat treatment machine, a surface preparation machine or a welding machine, the functional base (2) including a first set of protection (5) suitable for protecting an operator during the operation of the automated manufacturing machine, the first set of protection (5) including a first set of walls (6) and a first opening (7), - a feeding module (3) attached to the functional base (2) and including a feeding frame (8) and a mobile carriage (9) translating along a first axis (X) on the frame,the mobile trolley (9) comprising a carrying area (10), the carrying area (10) being capable of carrying and moving a workpiece support, the feeding module (3) comprising a second protective assembly (11) capable of protecting the operator during the operation of the feeding module (3), the second protective assembly (11) comprising a second set of walls (12) and a second opening (13), - a protective panel (14), the protective panel (14) being capable of closing the first opening (7) while leaving the second opening (13) open and the protective panel (14) being capable of closing the second opening (13) while leaving the first opening (7) open.

2. Production assembly (1) according to the preceding claim in which the protective panel (14) includes a door (15), in particular a hinged door.

3. Production assembly (1) according to any one of the preceding claims wherein the protective panel (14) is fixed in the first opening 7 or is fixed in the second opening 13 by means of a fixing means (16) in particular a fixing means comprising a screw (17).

4. Production assembly (1) according to the preceding claim in which the first opening (7) and the second opening (13) comprise a base (18) having a disengaging shape (19), in particular an inclined shape or a curved shape, so that the protective panel (14) remains in the first opening (7) or the second opening (13) only if it is fixed by means of the fixing means (16).

5. Production assembly (1) according to any one of the preceding claims wherein the feed frame (8) comprises a first lateral fixing zone (20) and a first attachment device (21) fixed to the first lateral fixing zone (20) and wherein the functional base (2) comprises a second attachment device (22), the first attachment device (21) and the second attachment device (22) being joined together so as to join the feed module (3) and the functional base (2).

6. Production assembly (1) according to the preceding claim wherein one of the first fastening device (21) and the second fastening device (22) comprises at least one first male fastening element (23) and the other of the first fastening device (21) and the second fastening device (22) comprises at least one first female fastening element (24), the at least one first male fastening element (23) being inserted into the at least one first female fastening element (24).

7. Production assembly (1) according to the preceding claim wherein that of the first fastening device (21) and of the second fastening device (23) which includes at least one first female fastening element (24) further includes at least one first locking element (25), the at least one first locking element (25) locking the first male fastening element (23) in the first female fastening element (24).

8. Production assembly (1) according to the preceding claim wherein the at least first male fastening element (23) is inserted into the at least first female fastening element (24) in a first insertion direction (26), and wherein the at least first locking element (25) is inserted into the at least first female fastening element in a second insertion direction (27) different from the first insertion direction (26).

9. Production assembly (1) according to the preceding claim in which the first insertion direction (26) is perpendicular to the second insertion direction (27).

10. Production assembly (1) according to the preceding claim in which the first insertion direction (26) is vertical and in which the second insertion direction (27) is horizontal, the second insertion direction (27) being in particular parallel to the first lateral fixing zone (20).

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