Device for shaping a tubular object

Abstract

The invention relates to a device (1) for shaping a tubular object. This device comprises at least one shaping means (2), a first rotary element (3) comprising the at least one shaping means (2) and means (4) for movably mounting the at least one shaping means (2), a second rotary element (5), drive means (6) for rotating the first rotary element (3) and the second rotary element (5), and means (15) for moving the at least one shaping means (2). This shaping device (1) is characterised in that the drive means (6) comprise: • - a first rotary motor (7) and a second rotary motor (8); • - an epicyclic gear train (9) with a ring gear (90), a sun gear (91), at least one planet gear (92) and a planet carrier (93); • - first input transmission means (10) for transmitting a rotational movement of the first rotary motor (7) to the ring gear (90), second input transmission means (11) for transmitting a rotational movement of the second rotary motor (8) to the sun gear (91), first output transmission means (12) for transmitting a rotational movement of the ring gear (90) to the first rotary element (3) and second output transmission means (13) for transmitting a rotational movement of the planet carrier (93) to the second rotary element (5).

Description

Description Title of the invention: Device for shaping a tubular object

[0001] The present invention relates to a device for shaping a tubular object.

[0002] This invention relates to the field of tool manufacturing, more particularly machine tools, which are configured to shape, more particularly to cut, a tubular object, more particularly a tube, especially a metallic one.

[0003] We already know of such devices for shaping a tubular object.

[0004] Such a shaping device is disclosed in document FR 2835775. This shaping device comprises, on the one hand, a means for shaping the tubular object and, on the other hand, a support means configured to bear against the tubular object diametrically opposite the shaping means. This shaping device includes a first rotating element, which is free to rotate about a first axis of rotation, and which comprises, on the one hand, a first arm, one elbow of which is equipped with the shaping means, as well as means for pivotally mounting this first arm within this first rotating element, and, on the other hand, a second arm, one elbow of which receives a finger whose free end is equipped with the support means and which comprises means for adjusting the extension length of this finger, as well as means for pivotally mounting this second arm within this first rotating element.This shaping device also includes a second rotating element, which is free to rotate about a second axis of rotation, as well as means for pivoting the first and second arms, both within the first rotating element and by the second rotating element. Finally, the shaping device includes means for rotating the first rotating element about the first axis of rotation and the second rotating element about the second axis of rotation.

[0005] This device has a complex design. Furthermore, in this shaping device, the pivoting amplitude of both the first and second arms is limited, meaning that it can only successively shape tubular objects of the same diameter. Shaping tubular objects of different diameters requires, for each diameter, fine-tuning and adjusting the finger extension length, which is tedious and time-consuming. In addition, this shaping device has a single shaping mechanism that wears out quickly and whose replacement is tedious and time-consuming.

[0006] The present invention is intended to remedy, at least in part, the drawbacks of prior art shaping devices.

[0007] For this purpose, the invention relates to a device for shaping a tubular object.This shaping device comprises, on the one hand, at least one means for shaping a tubular object, on the other hand, a first rotating element, which is mobile in rotation about a first axis of rotation, and which comprises said at least one shaping means as well as means for mounting said at least one shaping means in movement within this first rotating element, on the other hand, a second rotating element which is mobile in rotation about a second axis of rotation, on the other hand also, means for driving in rotation which are configured to drive in rotation the first rotating element about the first axis of rotation as well as the second rotating element about the second axis of rotation and, on the other hand also, means for driving in movement said at least one shaping means, this within the first rotating element and by the second rotating element.

[0008] The shaping device is characterized in that the rotary drive means comprise a first rotary motor and a second rotary motor, as well as an epicyclic gear train comprising a ring gear, a planet gear, at least one planet gear, and a planet carrier. These rotary drive means also comprise, on the one hand, first input transmission means configured to transmit a rotary motion from the first rotary motor to the ring gear, and on the other hand, second input transmission means configured to transmit a rotational movement of the second rotary motor to the planetary, on the other hand, of the first output transmission means which are configured to transmit a rotational movement of the ring to the first rotating element and, on the other hand also, of the second output transmission means which are configured to transmit a rotational movement of the planet carrier to the second rotating element.

[0009] According to another characteristic, on the one hand, the first input transmission means comprise an input gear, which has a first number of input teeth, and which is rotationally fixed to the ring, on the other hand, the first output transmission means comprise a first output gear, which has a first number of output teeth, and which is rotationally fixed to the ring and, on the other hand again, the second output transmission means comprise a second output gear, which has a second number of output teeth, and which is rotationally fixed to the planet carrier.

[0010] Another characteristic concerns the fact that the means for mounting in movement of said at least one shaping means include means for mounting in radial translation of said at least one shaping means.

[0011] In fact, the radial translation mounting means comprise, on the one hand, at least one guide path which includes the first rotating element, and on the other hand, at least one carriage, which includes the first rotating element, which cooperates with said at least one guide path, and which receives said at least one shaping means.

[0012] Yet another characteristic concerns the fact that said first rotating element and / or said second rotating element has at least one lateral opening, which is through, which is located in the extension of said at least one guide path, and which is configured so as to allow the passage of said at least one carriage.

[0013] Thus, the shaping device according to the invention comprises a first rotary motor, a second rotary motor, an epicyclic gear train, (first and second) rotating elements, and (input and output) transmission means. These characteristics advantageously allow, on the one hand, for ensuring a synchronous rotation of the (first and second) rotating elements, more particularly for shaping a tubular object, on the other hand, to ensure an asynchronous rotation of the (first and second) rotating elements, with one advancing relative to the other to move said at least shaping means into the active shaping position and, on the other hand, to ensure another asynchronous rotation of the (first and second) rotating elements, with one lagging relative to the other to move said at least shaping means into the inactive shaping position.

[0014] According to another feature, the means for mounting the at least one shaping means in motion include means for mounting the at least one shaping means in radial translation. These features advantageously allow a large range of motion for the at least one shaping means and, thus, the shaping of various tubular objects whose diameters also vary considerably, without adjustment, setting, or disassembly.

[0015] Yet another characteristic is that the first and / or second rotating element has a through opening which advantageously allows the carriage equipped with a shaping means (particularly when it is worn) to be extracted from the first rotating element for replacement and such a carriage (particularly equipped with a new shaping means) to be engaged inside the first rotating element, in a simple, quick and easy manner.

[0016] Other objects and advantages of the present invention will become apparent during the following description relating to embodiments which are given only as indicative and non-limiting examples.

[0017] Understanding this description will be facilitated by referring to the attached drawings, in which:

[0018] [Fig.1] represents a perspective view of a shaping device according to the invention.

[0019] [Fig.2] represents a perspective view and from another angle of view, of the shaping device illustrated in figure 1.

[0020] [Fig.3] is a schematic and perspective view of the shaping device illustrated in figure 2.

[0021] [Fig.4] represents a schematic, front and cross-sectional view of the shaping device according to the invention.

[0022] [Fig.5] is a schematic and side view of the shaping device according to the invention.

[0023] The present invention relates to the field of tool manufacturing, more particularly to the field of machine tool manufacturing, which are configured to shape, more particularly to cut, a tubular object, more particularly a tube, especially a metallic one.

[0024] The invention relates, then, to a shaping device 1 for a tubular object.

[0025] This shaping device 1 comprises at least one shaping means (2; 2') for such a tubular object. According to a preferred embodiment of the invention, this shaping device 1 comprises two shaping means (2; 2') while the shaping device 1 is configured such that these two shaping means (2; 2') are positioned opposite each other on either side of the tubular object to be shaped. According to a preferred embodiment, such a shaping means (2; 2') comprises (or is constituted by) a roller or the like.

[0026] This shaping device 1 also includes a first rotating element 3 which is mobile in rotation around a first axis of rotation X1.

[0027] As can be seen in the figures in the appendix, such a first rotating element 3 comprises at least one plate 30, which takes the form of a disk, and which is mobile in rotation around the first axis of rotation X1.

[0028] This first rotating element 3 also includes said at least one shaping means (2; 2') as well as moving mounting means 4 which are configured to mount said at least one shaping means (2; 2') in motion within this first rotating element 3.

[0029] In this regard, it will be noted that the means of mounting in displacement 4 of said at least one shaping means (2; 2') include means of mounting in radial translation of said at least one shaping means (2; 2').

[0030] In fact, these radial translation mounting means are configured to ensure radial translation mounting of said at least one shaping means (2; 2'), this in the direction of a radius which passes through the first axis of rotation X1.

[0031] As shown in Figures 4 and 5, these radial translation mounting means comprise, on the one hand, at least one guide track (40; 40') included in the first rotating element 3, more particularly in the plate 30 included in the first rotating element 3. Said at least one guide track (40; 40') may be in the form of a rail, a slide, or the like. Said at least one guide track (40; 40') extends radially in the direction of a radius passing through the first axis of rotation X1.

[0032] On the other hand, these radial translation mounting means comprise at least one carriage (41; 41'), which comprises the first rotating element 3, which cooperates with said at least one guide path (40; 40'), more particularly which is movable relative to said at least one guide path (40; 40'), more specifically which slides relative to said at least one guide path (40; 40'), particularly within said at least one guide path (40; 40').

[0033] It is, more particularly, such a trolley (41; 4T) which receives (more particularly which is equipped with) said at least one shaping means (2; 2').

[0034] In this regard, it should be noted that, according to a preferred embodiment of the invention, these mounting means for movement 4 (more particularly these mounting means for radial translation), on the one hand, are configured to mount two shaping means (2; 2') in movement within this first rotating element 3 (in the manner mentioned above and symmetrically with respect to the first axis of rotation X1) and, on the other hand, comprise two guideways (40; 40') as well as two carriages (41; 41'). In this case, these two guideways (40; 40') are symmetrical with respect to the first axis of rotation X1 and are located in line with each other (40; 40').

[0035] According to another feature, the shaping device 1 also includes a second rotating element 5 which is free to rotate about a second axis of rotation X2. This second axis of rotation X2 is at least parallel to the first axis of rotation X1, or even coincides with it. As can be seen in the figures in the appendix, this second rotating element 5 is positioned opposite the first rotating element 3.

[0036] This second rotating element 5 can include at least one plate 50, which adopts the shape of a disk, and which is mobile in rotation around the second axis of rotation X2.

[0037] Yet another characteristic concerns the fact that the shaping device 1 also includes rotational drive means 6 which are configured to drive in rotation the first rotating element 3 around the first axis of rotation X1 as well as the second rotating element 5 around the second axis of rotation X2.

[0038] In this regard, it will be noted that these means of rotational drive 6 comprise a first rotary motor 7 (which comprises a stator and a rotor which is mobile in rotation relative to the stator and around an axis of rotation which is at least parallel to the first axis of rotation X1 and / or the second axis of rotation X2) and a second rotary motor 8 (which comprises a stator and a rotor which is mobile in rotation relative to the stator and around an axis of rotation which is at least parallel to the first axis of rotation X1 and / or the second axis of rotation X2).

[0039] These rotational drive means 6 further comprise an epicyclic gear train 9 which includes a ring gear 90 (more particularly, which is rotatable about an axis of rotation Xt which is at least parallel to the first axis of rotation X1 and / or the second axis of rotation X2), a planet gear 91 (more particularly, which is rotatable about an axis of rotation which is at least parallel to the first axis of rotation X1 and / or the second axis of rotation X2 and / or the axis of rotation Xt about which the ring gear 90 is rotatable, or even coincident with the axis of rotation Xt about which the ring gear 90 is rotatable), at least one satellite gear 92 (more particularly, which cooperates with the ring gear 90 as well as with the planet gear 91) and which is mobile in rotation around an axis of rotation which is at least parallel to the first axis of rotation X1 and / or the second axis of rotation X2 and / or the axis of rotation Xt around which the ring 90 is mobile in rotation) and a satellite carrier 93 (more particularly which receives said at least one satellite 92 and which is mobile in rotation around an axis of rotation which is at least parallel to the first axis of rotation X1 and / or the second axis of rotation X2 and / or the axis of rotation Xt around which the ring 90 is mobile in rotation, or even coincident with the axis of rotation Xt around which the ring 90 is mobile in rotation).

[0040] These rotational drive means 6 also include, on the one hand, first input transmission means 10 which are configured to transmit a rotational movement from the first rotary motor 7 to the ring 90, on the other hand, second input transmission means 11 which are configured to transmit a rotational movement from the second rotary motor 8 to the planetary gear 91, on the other hand again, first output transmission means 12 which are configured to transmit a rotational movement from the ring 90 to the first rotating element 3 and, on the other hand also, second output transmission means 13 which are configured to transmit a rotational movement from the planet carrier 93 to the second rotating element 5.

[0041] In this regard, it will be observed that, on the one hand, the first input transmission means 10 comprise an input gear 100, which has a first number of input teeth NE1, and which is rotationally fixed to the ring 90 (more particularly to rotation around the axis of rotation Xt around which this ring 90 is rotationally mobile), on the other hand, the first output transmission means 12 comprise a first output gear 120, which has a first number of output teeth NS1, and which is rotationally fixed to the ring 90 (more particularly around the axis of rotation Xt around which this ring 90 is rotationally mobile), and, on the other hand again, the second output transmission means 13 comprise a second output gear 130, which has a second number of output teeth NS2,and which is rotationally fixed to the satellite carrier 93 (more specifically around the axis of rotation Xt around which the ring 90 is rotationally mobile).

[0042] In this regard, it should be noted that the first number of input teeth NE1 and the first number of output teeth NS1 are, preferably, identical.

[0043] Yet another characteristic concerns the fact that the first rotary motor 7 has a toothed wheel 70.

[0044] Alternatively or (and preferably) additionally, the first rotating element 3 includes a toothed wheel 31.

[0045] Alternatively or (and preferably) additionally, the second rotating element 5 includes a toothed wheel 51.

[0046] In particular, the gear wheel 31 of the first rotating element 3 and the gear wheel 51 of the second rotating element 5 can have the same number of teeth.

[0047] According to a first embodiment not shown, the gear 70 of the first rotary motor 7 cooperates (more particularly directly) with the input gear 100 of the first input transmission means 10. Alternatively or (and preferably) in addition to this first embodiment, the gear 31 of the first rotating element 3 cooperates (more particularly directly) with the first output gear 120 of the first output transmission means 12. Alternatively or (and preferably) in addition to this first embodiment, the gear 51 of the second rotating element 5 cooperates (more particularly directly) with the second output gear 130 of the second output transmission means 13.

[0048] According to a second embodiment illustrated in the figures in the appendix, the first input transmission means 10 further comprise at least one belt 101, in particular a toothed belt. Alternatively, or preferably in addition to this second embodiment, the first output transmission means 12 further comprise at least one belt 121, in particular a toothed belt. Alternatively, or preferably in addition to this second embodiment, the second output transmission means 13 further comprise at least one belt 131, in particular a toothed belt.

[0049] Also, and according to another characteristic, the belt 101 of the first input transmission means 10 cooperates at least with the input gear 100 of the first input transmission means 10, or even with the gear 70 of the first rotary motor 7.

[0050] Alternatively or (and preferably) additionally, the belt 121 of the first output transmission means 12 cooperates at least with the first output gear 120 of the first output transmission means 12, or even with the gear 31 of the first rotating element 3.

[0051] Alternatively or (and preferably) additionally, the belt 131 of the second output transmission means 13 cooperates at least with the second output gear 130 of the second output transmission means 13, or even with the gear 51 of the second rotating element 5.

[0052] According to another characteristic, the first output transmission means 12 have a first transmission ratio while the second output transmission means 13 have a second transmission ratio.

[0053] Also, and according to another characteristic, the first transmission ratio of the first output transmission means 12 and the second transmission ratio of the second output transmission means 13 are configured so that the first rotating element 3 and the second rotating element 5 rotate synchronously.

[0054] To achieve this, and according to a particular embodiment, the second number of output teeth NS2 is greater than the first number of output teeth NS1. According to a specific embodiment, the first number of output teeth NS1 is 99 while the second number of output teeth NS2 is 100. In such a case, the number of teeth of the gear 31 of the first rotating element 3 can be equal to the number of teeth of the gear 51 of the second rotating element 5.

[0055] However, according to another embodiment, the number of teeth on the gear 31 of the first rotating element 3 is greater than the number of teeth on the gear 51 of the second rotating element 5. In such a case, the second The number of output teeth NS2 can be equal to the first number of output teeth NS1.

[0056] As mentioned above, the shaping device 1 includes moving mounting means 4 of said at least one shaping means (2; 2') which include radial translation mounting means of said at least one shaping means (2; 2') which include at least one guide track (40; 40') as well as at least one carriage (41; 4T).

[0057] In this regard, it will be noted that, according to an additional feature, said first rotating element 3 and / or said second rotating element 5 comprises at least one through lateral opening 14, which is located in the extension of said at least one guide path (40; 40'), and which is configured to allow the passage of said at least one carriage (41; 41'). The presence of such a lateral opening 14 advantageously allows the extraction of at least a part of such a carriage (41; 41') from the first rotating element 3 (in particular for its complete extraction from this first rotating element 3 for its replacement and / or the replacement of its shaping means 2; 2') as well as the introduction of such a carriage (41; 4T) into this first rotating element 3.

[0058] The shaping device 1 also includes moving drive means 15 which are configured to drive said at least one shaping means (2; 2'), this within the first rotating element 3 and by the second rotating element 5.

[0059] In fact, these moving drive means 15 are, more particularly, configured to drive said at least one shaping means (2; 2'), this between at least one inactive shaping position and at least one active shaping position.

[0060] In this regard, it will be observed that these means of driving in movement 15 are, then, more particularly, configured to drive said at least one carriage (41; 41'), this between at least one such inactive shaping position and at least one such active shaping position.

[0061] Additionally, these moving drive means 15 can, furthermore, be configured to drive said at least one trolley (41; 41 ') from a retracted position inside the first rotating element 3 and a position at least partly deployed outside the first rotating element 3, more particularly through said at least one lateral opening 14.

[0062] These means of driving in displacement 15 comprise (or are constituted by) means of driving in radial translation (more particularly in the direction of a radius which passes through the first axis of rotation X1) of said at least one shaping means (2; 2'), more particularly of said at least one carriage (41; 41').

[0063] According to a particular embodiment, these drive means for the displacement 15 of said at least one shaping means (2; 2') comprise, on the one hand, at least one cam (150; 150') comprising the second rotating element 5 (more particularly, comprising the plate 50 of this second rotating element 5) and, on the other hand, at least one follower (151; 151'), which cooperates with said at least one cam (150; 150'), and which comprises the first rotating element 3, more particularly comprising the displacement mounting means 4, more specifically comprising the radial translation mounting means, in particular said at least one carriage (41; 41'). Such a follower (151; 151') may be in the form of a roller, a stop, a block, or the like.

[0064] In the following description, the operation of the shaping device 1 will be described with reference to the technical characteristics described above.

[0065] According to a first mode of operation of the shaping device 1, the first rotary motor 7 is running while the second rotary motor 8 is stopped.

[0066] In this first mode of operation, the first rotating element 3 and the second rotating element 5 rotate synchronously, more particularly due to the appropriate configuration of the first transmission ratio of the first output transmission means 12 and the second transmission ratio of the second output transmission means 13 as described above.

[0067] According to a second operating mode of the shaping device 1, the first rotary motor 7 is stopped while the second rotary motor 8 is running.

[0068] In this second mode of operation, the displacement drive means 15 (more particularly said at least one cam 150; 150') ensure a displacement drive (in radial translation) of said at least one shaping means (2; 2'), more particularly between a retracted position of said at least one carriage (41; 41') inside the first rotating element 3 and a position at least partially deployed of said at least one carriage (41; 41') outside the first rotating element 3 (more particularly through said at least one lateral orifice 14) and vice versa.

[0069] According to a third operating mode of the shaping device 1, the first rotary motor 7 and the second rotary motor 8 operate, more specifically, continuously.

[0070] In this third mode of operation, the displacement drive means 15 (more particularly said at least one cam 150; 150') ensure a displacement drive (in radial translation) of said at least one shaping means (2; 2'), this, either between at least one inactive shaping position and at least one active shaping position, or between at least one active shaping position and at least one inactive shaping position, depending on the direction of rotation of the second rotary motor 8.

Claims

Claims

1. Device (1) for shaping a tubular object, this shaping device (1) comprises, on the one hand, at least one shaping means (2; 2') for shaping a tubular object, on the other hand, a first rotary element (3), which is rotatable about a first axis of rotation (X1), and which comprises said at least one shaping means (2; 2') as well as means for mounting in displacement (4) said at least one shaping means (2; 2') within this first rotary element (3), on the other hand again, a second rotary element (5) which is rotatable about a second axis of rotation (X2), on the other hand also, rotational drive means (6) which are configured to rotate the first rotary element (3) about the first axis of rotation (X1) as well as the second rotary element (5) about the second axis of rotation (X2) and, on the other hand also, means for driving in displacement (15) said at least one shaping means (2;2'), this within the first rotary element (3) and by the second rotary element (5), characterized in that the rotation drive means (6) comprise:; - a first rotary motor (7) and a second rotary motor (8); - an epicyclic gear train (9) which comprises a crown (90), a sun gear (91), at least one satellite (92) and a satellite carrier (93); - on the one hand, first input transmission means (10) which are configured to transmit a rotational movement of the first rotary motor (7) to the crown (90), on the other hand, second input transmission means (11) which are configured to transmit a rotational movement of the second rotary motor (8) to the sun gear (91), on the other hand again, first output transmission means (12) which are configured to transmit a rotational movement of the crown (90) to the first rotary element (3) and, on the other hand also, second output transmission means (13) which are configured to transmit a rotational movement of the planet carrier (93) to the second rotary element (5).

2. Shaping device (1) according to claim 1, characterized in that, on the one hand, the first transmission means input (10) comprise an input toothed wheel (100), which comprises a first number of input teeth (NE1), and which is rotationally fixed to the crown (90), on the other hand, the first output transmission means (12) comprise a first output toothed wheel (120), which comprises a first number of output teeth (NS1), and which is rotationally fixed to the crown (90) and, on the other hand, the second output transmission means (13) comprise a second output toothed wheel (130), which comprises a second number of output teeth NS2), and which is rotationally fixed to the planet carrier (93).

3. Shaping device (1) according to claim 2, characterized in that the first number of input teeth (NE1) and the first number of output teeth (NS1) are identical.

4. A shaping device (1) according to any preceding claim, characterized in that the first transmission ratio of the first output transmission means (12) and the second transmission ratio of the second output transmission means (13) are configured such that the first rotary element (3) and the second rotary element (5) rotate synchronously.

5. Shaping device (1) according to claims 2 and 4, characterized in that the second number of output teeth (NS2) is greater than the first number of output teeth (NS1).

6. Shaping device (1) according to any one of the preceding claims, characterized in that the first rotary motor (7) and / or the first rotary element (3) and / or the second rotary element (5) comprises a toothed wheel (70; 31; 51).

7. Shaping device (1) according to claims 2 and 6, characterized in that the toothed wheel (70) of the first rotary motor (7) cooperates with the input toothed wheel (100) of the first input transmission means (10) and / or that the toothed wheel (31) of the first rotary element (3) cooperates with the first output toothed wheel (120) of the first output transmission means (12) and / or that the toothed wheel (51) of the second rotary element (5) cooperates with the second output toothed wheel (130) of the second output transmission means (13).

8. Shaping device (1) according to claims 4 and 6, characterized in that the number of teeth of the toothed wheel (31) of the first rotating element (3) is greater than the number of teeth of the toothed wheel (51) of the second rotating element (5).

9. Shaping device (1) according to any one of the preceding claims, characterized in that the first input transmission means (10) and / or the first output transmission means (12) and / or the second output transmission means (13) further comprise at least one belt (101; 121; 131), in particular a toothed belt.

10. Shaping device (1) according to claims 2 and 9, characterized in that the belt (101) of the first input transmission means (10) cooperates at least with the input toothed wheel (100) of the first input transmission means (10) and / or that the belt (121) of the first output transmission means (12) cooperates at least with the first output toothed wheel (120) of the first output transmission means (12) and / or that the belt (131) of the second output transmission means (13) cooperates at least with the second output toothed wheel (130) of the second output transmission means (13).

11. Shaping device (1) according to any one of the preceding claims, characterized in that the means for mounting in displacement (4) of said at least one shaping means (2; 2') comprise means for mounting in radial translation of said at least one shaping means (2; 2').

12. Shaping device according to claim 11, characterized in that the radial translation mounting means comprise, on the one hand, at least one guide path (40; 40') which the first rotary element (3) comprises, on the other hand, at least one carriage (41; 41'), which the first rotary element (3) comprises, which cooperates with said at least one guide path (40; 40'), and which receives said at least one shaping means (2; 2').

13. Shaping device (1) according to claim 12, characterized in that said first rotary element (3) and / or said second rotating element (5) comprises at least one lateral orifice (14), which is through, which is located in the extension of said at least one guide path (40; 40'), and which is configured so as to allow the passage of said at least one carriage (41; 41').

14. Shaping device according to any one of the preceding claims, characterized in that the displacement drive means (15) of said at least one shaping means (2; 2') comprise, on the one hand, at least one cam (150; 150') which the second rotary element (5) comprises and, on the other hand, at least one follower (151; 151'), which cooperates with said at least one cam (150; 150'), and which the first rotary element (3) comprises.

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