Wire straightening device

Abstract

TITLE. Wire straightening device The invention relates to a wire straightening device (1) for a wire (F) which comprises, on the one hand, a fixed frame (2), on the other hand, a rotating system (3), mounted for rotation about a main axis of rotation (X), and comprising at least one central receiving means (4) for the wire (F) extending along a central axis at least parallel to the main axis of rotation (X) as well as positioning means (5) for said at least one central receiving means (4) within the rotating system (3) so that said central axis can be positioned at different distances from the main axis of rotation (X).This straightening device (1) is characterized in that the positioning means (5) comprise, on the one hand, a primary rotating element (8), free to rotate about the main axis of rotation (X), and having a primary housing (80) extending along a primary axis parallel to the main axis of rotation (X) and offset from the main axis of rotation (X), and on the other hand, a secondary rotating element (9), positioned inside the primary housing (80), free to rotate about the primary axis and relative to the primary housing (80), and having a secondary housing (90), extending along a secondary axis parallel to the primary axis and offset from the primary axis, and within which said at least one central receiving means (4) is positioned. Figure for the abbreviation: Fig. 1.

Description

Title of the invention: Device for straightening a metal wire

[0001] The invention relates to a device for straightening a metal wire.

[0002] The present invention relates to the field of manufacturing machine tools which are configured to shape a metal wire, more particularly to straighten such a metal wire, with a view to giving it a rectilinear shape.

[0003] The present invention relates, more specifically, to a device for straightening a metal wire, more particularly a metal wire unwound from a winding reel, with a view to giving it, after its straightening, a particular shape adapted to its use.

[0004] Such devices for straightening a metal wire are already known. Such a device comprises a fixed frame and a rotating system which is mounted to rotate about a main axis of rotation relative to this fixed frame. This rotating system comprises at least one central wire receiving means (called a central grain) which extends along a central axis which is at least parallel to the main axis of rotation (more particularly offset relative to this main axis of rotation) as well as positioning means which are configured to position said at least one central receiving means (central grain) within the rotating system so that said central axis can be positioned at different distances from the main axis of rotation.This rotary system also comprises, upstream of said at least one central receiving means (central grain), at least one upstream receiving means of the wire (called upstream grain) which extends along an upstream axis, or even means for positioning said at least one upstream receiving means (upstream grain) within the rotary system. This rotary system also comprises, downstream of said at least one central receiving means (central grain), at least one downstream receiving means of the wire (called downstream grain) which extends along a downstream axis, or even means for positioning said at least one downstream receiving means (downstream grain) within the rotary system.

[0005] Such a device for straightening a metal wire has a certain number of drawbacks. In particular, the means for positioning said at least one central receiving means (central grain) make it possible to position said at least one central receiving means (central grain) only in a limited number of positions and at a limited distance from the main axis of rotation. This complicates (or even prevents) the appropriate straightening of a metal wire with a small radius of curvature, in particular the straightening of such a metal wire at the end of unwinding of such a metal wire from a reel.

[0006] In fact, the rotary system usually comprises a plurality of upstream receiving means (upstream grains), or even a plurality of positioning means operation of these upstream receiving means (upstream grains) and / or a plurality of downstream receiving means (downstream grains), or even a plurality of positioning means of these downstream receiving means (downstream grains). This complicates the design of the straightening device as well as the adjustment of the plurality of these positioning means.

[0007] Furthermore, the actuation of these positioning means is difficult and time-consuming.

[0008] Finally, when actuating these positioning means, it is imperative to position the receiving means (central grain, upstream grain and downstream grain) in a particular manner and so that the rotating system is balanced. In the absence of such balance, the rotating system malfunctions and suffers damage.

[0009] The present invention aims to overcome the drawbacks of the devices for straightening a metal wire of the state of the art.

[0010] To this end, the invention relates to a device for straightening a metal wire, in particular from a winding reel of this metal wire.This straightening device comprises, on the one hand, a fixed chassis, on the other hand, a rotary system, which is mounted in rotation about a main axis of rotation relative to the chassis, and which comprises at least one central receiving means for the metal wire which extends along a central axis which is at least parallel to the main axis of rotation as well as positioning means which are configured to position said at least one central receiving means within the rotary system so that said central axis can be positioned at different distances from the main axis of rotation, on the other hand again and upstream of said at least one central receiving means, at least one upstream receiving means for the metal wire which extends along an upstream axis, and, on the other hand also and downstream of said at least one central receiving means, at least one downstream receiving means for the metal wire which extends along a downstream axis.

[0011] This wire straightening device is characterized in that the positioning means comprise, on the one hand, a primary rotary element, which is rotatable about the main axis of rotation, and which comprises a primary housing which extends along a primary axis which is parallel to the main axis of rotation and offset relative to the main axis of rotation, on the other hand, a secondary rotary element, which is positioned inside the primary housing, which is rotatable about the primary axis and relative to the primary housing, and which comprises a secondary housing, which extends along a secondary axis which is parallel to the primary axis and offset relative to the primary axis, and inside which said at least one central receiving means is positioned.

[0012] According to another characteristic, the straightening device comprises means adjustment means which are configured to adjust the angular position of the secondary rotating element relative to the primary rotating element and / or relative to the primary housing.

[0013] Yet another feature relates to the fact that the straightening device comprises reversible locking means which are configured to reversibly lock the secondary rotary element relative to the primary rotary element and / or inside the primary housing, this in at least one angular position of the secondary rotary element relative to the primary rotary element and / or relative to the primary housing.

[0014] An additional feature relates to the fact that the straightening device comprises reversible immobilization means which are configured to reversibly immobilize said at least one central receiving means relative to the secondary rotating element and / or inside the secondary housing.

[0015] Thus, the wire straightening device comprises positioning means which comprise, on the one hand, a primary rotary element (rotating around the main axis of rotation) with a primary housing (which extends along a primary axis offset from the main axis of rotation), on the other hand, a secondary rotary element (rotating around the primary axis) which is positioned inside the primary housing, and which comprises a secondary housing (which extends along a secondary axis offset from the primary axis) inside which said at least one central receiving means is positioned.These characteristics allow, advantageously and by ensuring a rotation of the secondary rotary element relative to the primary rotary element (more particularly inside the primary housing), to vary the position of said at least one central receiving means relative to the primary rotary element, and, therefore, to vary the distance of the central axis relative to the main axis of rotation. In addition, these characteristics allow a distance of the central axis relative to the main axis of rotation which is notably greater than that permitted by the rectification devices of the state of the art. Furthermore, these characteristics allow the rotary system to be given a particularly reduced size compared to the rectification devices of the state of the art. Finally, these characteristics as well as their particular arrangement allow the rotary system to be given a stable dynamic balance.

[0016] Other aims and advantages of the present invention will appear during the description which follows relating to embodiments which are given only as indicative and non-limiting examples.

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

[0018] [Fig.l] represents a schematic and perspective view of a re- straightening of metal wire according to the invention.

[0019] [Fig.2] represents a schematic, perspective and exploded view of the rotary system which the rectification device illustrated [Fig.l] comprises.

[0020] [Fig.3] represents a schematic and side view of the rotary system that comprises the straightening device illustrated [Fig.l], this in a first position of the secondary rotating element relative to the primary rotating element corresponding to a straight wire.

[0021] [Fig.4] represents a schematic and side view of the rotary system that comprises the straightening device illustrated [Fig.l], this in a second position of the secondary rotating element relative to the primary rotating element corresponding, more particularly, to an intermediate position of straightening of the wire.

[0022] [Fig.5] represents a schematic and side view of the rotary system that comprises the straightening device illustrated [Fig.l], this in a third position of the secondary rotating element relative to the primary rotating element corresponding, more particularly, to an extreme position of straightening of the wire.

[0023] [Fig.6] represents a schematic view, in axial and partial section of the rotary system which comprises the illustrated straightening device [Fig.l], this in the inactive position of cooperation between a toothed crown and a toothed sector which comprises the reversible locking means.

[0024] [Fig.7] represents a schematic view, in axial and partial section of the rotary system which comprises the illustrated straightening device [Fig.l], this in the active position of cooperation between the toothed crown and the toothed sector which comprises the reversible locking means.

[0025] [Fig.8] represents a schematic and cross-sectional view of the rotary system which comprises the straightening device illustrated [Fig.l], this in the inactive position of immobilization of said at least one central receiving means by the reversible immobilization means and in a first position of the secondary rotary element relative to the primary rotary element corresponding to a straight wire.

[0026] [Fig.9] represents a schematic and cross-sectional view of the rotary system which the illustrated straightening device comprises [Fig.l], this in the active position of immobilization of said at least one central receiving means by the reversible immobilization means and in a second position of the secondary rotary element relative to the primary rotary element corresponding, more particularly, to an intermediate position of straightening of the wire.

[0027] [Fig. 10] represents a schematic and cross-sectional view of the rotary system which comprises the straightening device illustrated [Fig.l], this in the active position of immobilization of said at least one central receiving means by the reversible immobilization means and this in a third position of the rotary element secondary to the primary rotating element corresponding, more particularly, to an extreme position of straightening of the wire.

[0028] [Fig. 11] represents a schematic view, from the side and in longitudinal section of the straightening device illustrated [Fig.l], this in a first position of the secondary rotating element relative to the primary rotating element which corresponds to that illustrated in figures 3 and 8 and which corresponds to a straight wire.

[0029] [Fig. 12] represents a schematic view, from the side and in longitudinal section of the straightening device illustrated [Fig.l], this in another position of the secondary rotating element relative to the primary rotating element which corresponds to that illustrated in figures 5 and 10 and which corresponds, more particularly, to an extreme position of straightening of the wire.

[0030] The present invention relates to the field of manufacturing machine tools which are configured to shape a metal wire, more particularly to straighten such a metal wire, with a view to giving it a rectilinear shape.

[0031] The invention then relates to a device 1 for straightening a metal wire F, more particularly a metal wire F initially wound in the form of a coil (not shown) and coming from such a coil. Such a straightening device 1 is then, more particularly, installed between such a coil and a shaping machine (not shown) which is configured to shape such a metal wire F in order to give it a particular shape (in particular complex) adapted to its subsequent use.

[0032] The straightening device 1 comprises, on the one hand, a fixed frame 2 which is intended to be positioned between said coil of metal wire F (more particularly downstream of this coil) and the shaping machine (more particularly upstream of this shaping machine).

[0033] On the other hand, this straightening device 1 comprises a rotary system 3 which is mounted in rotation around a main axis of rotation X relative to the chassis 2, more particularly on this chassis 2.

[0034] This rotary system 3 comprises at least one central receiving means 4 for receiving the metal wire F. Said at least one central receiving means 4 extends along a central axis Xc which is at least parallel to the main axis of rotation X. In fact, said at least one central receiving means 4 comprises a through-orifice 40, which is configured to be passed through by the metal wire F, and which extends along this central axis Xc, so that the metal wire F also extends along this central axis Xc within said at least one central receiving means 4. Such a central receiving means 4 for receiving the metal wire F is known under the name of "grain".

[0035] This rotary system 3 further comprises positioning means 5 which are configured to position said at least one central receiving means 4 within the rotating system 3, this so that said central axis Xc (and, consequently, the metal wire F) can be positioned at different distances from the main axis of rotation X. These positioning means 5 then make it possible to offset this central axis Xc (and, consequently, the metal wire F) relative to the main axis of rotation X.

[0036] On the other hand, the straightening device 1 comprises, upstream of said at least one central receiving means 4 (therefore, between the coil of metal wire F and said at least one central receiving means 4), at least one upstream receiving means 6 of the metal wire F which extends along an upstream axis which is at least parallel to (or even coincident with) the main axis of rotation X. Here again, said at least one upstream receiving means 6 comprises a through-orifice, which is configured to be traversed by the metal wire F, and which extends along this upstream axis, so that the metal wire F also extends along this upstream axis within said at least one upstream receiving means 6. Such an upstream receiving means 6 of the metal wire F is, here again, known under the name of “grain”.

[0037] On the other hand also, the straightening device 1 comprises, downstream of said at least one central receiving means 4 (therefore, between said at least one central receiving means 4 and the shaping machine), at least one downstream receiving means 7 of the metal wire F which extends along a downstream axis which is at least parallel to (or even coincident with) the main axis of rotation X. Here too, said at least one downstream receiving means 7 comprises a through-orifice, which is configured to be crossed by the metal wire F, and which extends along this downstream axis, so that the metal wire F also extends along this downstream axis within said at least one downstream receiving means 7. Such a downstream receiving means 7 of the metal wire F is, here too, known under the name of “grain”.

[0038] According to the invention, the positioning means 5 comprise, on the one hand, a primary rotary element 8, which is movable in rotation around the main axis of rotation X, and which comprises a primary housing 80 which extends along a primary axis XI which is parallel to the main axis of rotation X and which is offset relative to this main axis of rotation X.

[0039] Said primary rotating element 8 is preferably circular, or even has a symmetry of revolution around the main axis of rotation X.

[0040] Alternatively or (and preferably) additionally, said primary housing 80 is preferably circular, or even has a symmetry of revolution around the primary axis XL.

[0041] On the other hand, these positioning means 5 comprise a secondary rotary element 9, which is positioned inside the primary housing 80, which is movable in rotation around the primary axis XI and relative to the primary housing 80 (more particularly inside this primary housing 80), and which comprises a housing secondary axis 90, which extends along a secondary axis X2 which is parallel to the primary axis XI (and, consequently to the main axis of rotation X) and which is offset relative to the primary axis XI, and inside which said at least one central receiving means 4 is positioned.

[0042] Said secondary rotary element 9 is preferably circular, or even has a symmetry of revolution around the primary axis XL.

[0043] Alternatively or (and preferably) additionally, said secondary housing 90 is preferably circular, or even has a symmetry of revolution around the secondary axis X2.

[0044] As mentioned above, the primary rotating element 8 is rotatable about the main axis of rotation X.

[0045] In this regard, it will be observed that the straightening device 1 then comprises rotational mounting means 10 which are configured to mount the primary rotary element 8 in rotation around the main axis of rotation X relative to the chassis 2, more particularly on this chassis 2. Such rotational mounting means 10 may comprise a bearing which comprises, on the one hand, a first ring associated with the chassis 2, on the other hand, a second ring associated with the primary rotary element 8 and, on the other hand, rolling means (in the form of balls, rollers, needles or other) interposed between the first ring and the second ring.

[0046] According to another characteristic, the device 1 for straightening a metal wire F comprises adjustment means 11 which are configured to adjust the angular position of the secondary rotary element 9 (which receives said at least one central receiving means 4) relative to the primary rotary element 8 and / or relative to the primary housing 80 (which this primary rotary element 8 comprises). Such adjustment means 11 then advantageously make it possible to adjust the position of the central receiving means 4 (and, consequently, of the metal wire F to be straightened) relative to the primary rotary element 8 and, more particularly, to adjust the position (more particularly the distance) of the central axis Xc (along which this metal wire F extends) relative to the main axis of rotation X.

[0047] Such adjustment means 11 comprise, on the one hand, a toothed crown 110 which the secondary rotary element 9 comprises, more particularly at the periphery of this secondary rotary element 9.

[0048] On the other hand, these adjustment means 11 comprise a toothed wheel 111, which cooperates with the toothed crown 110, and which comprises or receives the primary rotary element 8, more particularly inside an annex housing 81, which comprises the primary rotary element 8, and which is located on the periphery of the primary housing 80 and / or which extends along an axis parallel to the main axis of rotation X. This toothed wheel 111 is movable in rotation at least relative to this primary rotary element 8 (as well as by relative to the secondary rotating element 9), this around an axis parallel to the main axis of rotation X.

[0049] Furthermore, these adjustment means 11 comprise a control member 112, which is integral in rotation with the toothed wheel 111, and which comprises or receives the primary rotary element 8, more particularly inside said aforementioned annex housing 81.

[0050] According to another characteristic, the device 1 is configured so that said control member 112 is accessible (in order to be actuated) from outside the rotary system 3, more particularly from outside said primary rotary element 8.

[0051] In this regard, it will be observed that the primary rotary element 8 comprises an opening housing 82 while the control member 112 is positioned at least inside this opening housing 82 (or even inside the aforementioned annex housing 81), or even opens out of this opening housing 82. This opening housing 82 is preferably located in the extension of the aforementioned annex housing 81 and / or opens out on one side of the rotary system 3 and / or of the primary rotary element 8.

[0052] The control member 112 may comprise a rod which extends at least inside the opening housing 82 (or even inside the additional housing 81), or which extends through this opening housing 82 and then extends outside the primary rotary element 8.

[0053] This control member 112 may also comprise means for receiving (more particularly in the form of an imprint) a control tool (more particularly in the form of a key, a screwdriver or other).

[0054] In fact, the presence of these adjustment means 11 advantageously makes it possible to make the secondary rotary element 9 (and, consequently, said at least one central receiving means 4) adopt different positions relative to the primary rotary element 8 and, thus, to position the central axis Xc (and, consequently, the metal wire F) at different distances from the main axis of rotation X (and, consequently, in a more or less offset manner relative to this main axis of rotation X).

[0055] In particular, these adjustment means 11 make it possible to position the central axis Xc so that it is, depending on the case, coincident with the main axis of rotation X ([Fig.3] and [Fig.8]) or offset relative to this main axis of rotation X ([Fig.4], [Fig.5], [Fig.8] and [Fig.9],

[0056] According to another characteristic, the device 1 for straightening a metal wire F comprises reversible locking means 12 which are configured to reversibly lock the secondary rotary element 9 relative to the primary rotary element 8 and / or inside the primary housing 80 (which this primary rotary element 8 comprises), this in at least one angular position (or even in a plurality of distinct angular positions) of the secondary rotating element 9 relative to the primary rotating element 8 and / or relative to the primary housing 80.

[0057] These reversible locking means 12 may comprise a dog clutch.

[0058] In this regard, it will be observed that these reversible locking means 12 may comprise, on the one hand, a toothed crown 120 which the secondary rotary element 9 comprises, more particularly at the periphery of this secondary rotary element 9. According to a preferred embodiment, this toothed crown 120 is constituted by the toothed crown 110 which the aforementioned adjustment means 11 comprise.

[0059] On the other hand, these reversible locking means 12 may comprise a toothed sector 121, which the primary rotary element 8 comprises or receives, more particularly inside an additional housing 83 (in particular different from the aforementioned additional housing 81 and / or adjacent to this additional housing 81), which the primary rotary element 8 comprises, and which is located on the periphery of the primary housing 80 and / or which extends along an axis parallel to the main axis of rotation X.

[0060] This toothed sector 121 is movable between, on the one hand, an inactive position of cooperation with the toothed crown 120 ([Fig.6]) and, on the other hand, an active position of cooperation with the toothed crown 120 ([Fig.7]). This active position of cooperation corresponds to an active position of locking of the secondary rotary element 9 relative to the primary rotary element 8 and / or inside the primary housing 80.

[0061] In fact, this toothed sector 121 is movable in translation at least relative to the secondary rotary element 9 (as well as relative to the primary rotary element 8), this along an axis parallel to the main axis of rotation X as well as between the inactive position and the active position of cooperation with the toothed crown 120.

[0062] Furthermore, these reversible locking means 12 may comprise control means 122 which the primary rotary element 8 comprises or receives, more particularly inside the aforementioned additional housing 83.

[0063] These control means 122 are associated with the toothed sector 121 and are configured to control the movement of this toothed sector 121 between the active position of cooperation with the toothed crown 120 and the inactive position of cooperation with the toothed crown 120.

[0064] According to another characteristic, these control means 122 may comprise at least one control member 123 which the primary rotary element 8 comprises or receives, more particularly inside the aforementioned additional housing 83.

[0065] Said at least one control member 123 extends along a control axis at least parallel to the main axis of rotation X.

[0066] In addition, said at least one control member 123 receives (more particularly externally) the toothed sector 121 or is equipped (more particularly externally) with this toothed sector 121.

[0067] Furthermore, said at least one control member 123 is movable (at least in translation along the control axis along which the control member 123 extends) relative to the primary rotary element 8 as well as relative to the secondary rotary element 9, this between, on the one hand, a first position which corresponds to the inactive position of cooperation between the toothed sector 121 and the toothed crown 120 ([Fig.6]) and, on the other hand, a second position which corresponds to the active position of cooperation between the toothed sector 121 and the toothed crown 120 ([Fig.7]).

[0068] Such a control member 123 may take the form of a rod or the like.

[0069] Additionally, these control means 122 may also comprise at least one return means 124 which cooperates with the primary rotary element 8 and with the control member 123, more particularly which is interposed between this primary rotary element 8 and this control member 123.

[0070] Said at least one return means 124 is configured to drive the control member 123 (and thus the toothed sector 121) from the first position (which corresponds to the inactive position of cooperation of the toothed sector 121 with the toothed crown 120) to the second position (which corresponds to the active position of cooperation of the toothed sector 121 with the toothed crown 120).

[0071] Yet another characteristic concerns the fact that the rectifying device 1 is configured so that the control means 122 (more particularly the control member 123) are accessible (for the purpose of being actuated) from outside the rotary system 3 and / or said primary rotary element 8.

[0072] To do this, the additional housing 83 is preferably open, more particularly on the side of the rotary system 3 and / or on the side of the primary rotary element 8 opposite that from which the aforementioned open housing 82 opens.

[0073] Another characteristic concerns the fact that the straightening device 1 comprises reversible immobilization means 13 which are configured to reversibly immobilize said at least one central receiving means 4 relative to the secondary rotary element 9 and / or inside the secondary housing 90.

[0074] In fact, these reversible immobilization means 13 are configured to reversibly immobilize said at least one central receiving means 4 relative to the secondary rotary element 9 and / or inside the secondary housing 90, this in a direction parallel to the main axis of rotation X.

[0075] The reversible immobilization means 13 may comprise, on the one hand, a groove 130 (in particular circular) that comprises said at least one central receiving means 4, on the other hand, a latch 131, that comprises the secondary rotary element 9, and which is movable between an inactive position of cooperation with the groove 130 (which corresponds to an inactive position of immobilization of said at least one central receiving means 4 relative to the secondary rotary element 9 and / or inside the secondary housing 90 [Fig.8]) and an active position of cooperation with the groove 130 (which corresponds to an active position of immobilization of said at least one central receiving means 4 relative to the secondary rotary element 9 and / or inside the secondary housing 90 [Fig.9] and [Fig. 10]).

[0076] In fact, said latch 131 is movable in translation at least relative to the secondary rotary element 9 (as well as relative to the primary rotary element 8), this in a direction perpendicular to the main axis of rotation X.

[0077] Furthermore, these reversible immobilization means 13 may comprise control means 132 which are configured to control the movement of the latch 131 between, on the one hand, the inactive position of cooperation between the latch 131 and the groove 130 [Fig. 8] and, on the other hand, the active position of cooperation between the latch 131 and the groove 130 ([Fig. 9] and [Fig. 10]).

[0078] According to another characteristic, these reversible immobilization means 13 are, more particularly, configured to reversibly immobilize said at least one central receiving means 4 relative to the secondary rotary element 9 and / or inside the secondary housing 90, this under the effect of the rotation of the secondary rotary element 9 relative to the primary rotary element 8 (more particularly under the effect of the actuation of the adjustment means 11 mentioned above).

[0079] In this regard, it will be observed that it is, more particularly, the control means 132 which are configured to control the movement of the latch 131 between the inactive position and the active cooperation position, this under the effect of the rotation of the secondary rotary element 9 relative to the primary rotary element 8 (more particularly under the effect of the actuation of the adjustment means 11 mentioned above).

[0080] In fact, these control means 132 comprise, on the one hand, a cam path 133 which the primary rotary element 8 comprises (more particularly which the primary housing 80 comprises) and, on the other hand, a cam follower 134, which is associated with the latch 131, and which cooperates with the cam path 133.

[0081] In this regard, it will be observed that the cam path 133 comprises, on the one hand, a circular portion 1330 (which the primary housing 80 comprises, more particularly which the wall of the primary housing 80 comprises) and, on the other hand, an arcuate portion 1331 which extends from the circular portion 1330 and relative to this circular portion 1330 (more particularly laterally from the primary housing 80 and relative to this primary housing 80), this diverging.

[0082] As seen in [Fig.8], the secondary rotary element 9 adopts a first position in which the central axis Xc (along which the central receiving means 4 extends) coincides with the main axis of rotation X. In this position, the cam follower 134 cooperates with the arcuate portion 1331 of the cam path 133 and the latch 131 adopts an inactive opposition of cooperation with groove 130.

[0083] As can be seen in figures [Fig.9] and [Fig. 10], the secondary rotary element 9 adopts a second position [Fig.9] and a third position [Fig. 10] in which the central axis Xc (along which the central receiving means 4 extends) is offset relative to the main axis of rotation X. In such a position, the cam follower 134 cooperates with the circular portion 1330 of the cam path 133 and the latch 131 adopts an active opposition of cooperation with the groove 130.

[0084] The transition from the first position to the second position and from the second position to the third position is ensured by actuating the adjustment means 11 mentioned above.

[0085] According to another characteristic, the control means 132 may also comprise at least one return means 135, which the secondary rotary element 9 comprises, which cooperates with the secondary rotary element 9 and the latch 131 (more particularly which is interposed between the secondary rotary element 9 and the latch 131), and which is configured to drive the latch 131 from the active position of cooperation of the latch 131 with the groove 130 ([Fig. 9] and [Fig. 10]) to the inactive position of cooperation of the latch 131 with the groove 130 ([Fig. 8]).

[0086] Yet another characteristic concerns the fact that the reversible immobilization means 13 comprise a part 14 which comprises, on the one hand, a ring 140, which comprises the latch 131, and which is positioned around said at least one central receiving means 4, on the other hand, a finger 141, which extends from the ring 140, and which comprises the cam follower 134 and, on the other hand, receiving means 142 of the return means 135.

[0087] Another characteristic of the straightening device 1 consists in that it comprises means 15 for driving the rotary system 3 in rotation. These means 15 for driving the rotary system 3 in rotation comprise, on the one hand, a motor 150, which is offset laterally relative to the rotary system 3, and which comprises a rotor whose axis of rotation is parallel to the main axis of rotation X and, on the other hand, at least one transmission means 151 (more particularly in the form of a belt or the like) which cooperates with the rotor of the motor and with the rotary system 3.

Claims

Claims

1. Straightening device (1) for a metal wire (F), in particular from a winding reel of this metal wire (F), this straightening device (1) comprises, on the one hand, a fixed frame (2), on the other hand, a rotary system (3), which is mounted in rotation about a main axis of rotation (X) relative to the frame (2), and which comprises at least one central receiving means (4) for the metal wire (F) which extends along a central axis (Xc) which is at least parallel to the main axis of rotation (X) as well as positioning means (5) which are configured to position said at least one central receiving means (4) within the rotary system (3) so that said central axis (Xc) can be positioned at different distances from the main axis of rotation (X), on the other hand again and upstream of said at least one central receiving means (4), at least one upstream receiving means (6) for the metal wire (F) which extends along an upstream axis, and,on the other hand also and downstream of said at least one central receiving means (4), at least one downstream receiving means (7) of the metal wire (F) which extends along a downstream axis, characterized in that the positioning means (5) comprise, on the one hand, a primary rotary element (8), which is rotatable about the main axis of rotation (X), and which comprises a primary housing (80) which extends along a primary axis (XI) which is parallel to the main axis of rotation (X) and offset relative to the main axis of rotation (X), on the other hand, a secondary rotary element (9), which is positioned inside the primary housing (80), which is rotatable about the primary axis (XI) and relative to the primary housing (80), and which comprises a secondary housing (90), which extends along a secondary axis (X2) which is parallel to the primary axis (XI) and offset relative to the primary axis (XI),and inside which said at least one central receiving means (4) is positioned.,

2. Device (1) for straightening a metal wire (F) according to claim 1, characterized in that it comprises rotational mounting means (10) which are configured to mount the primary rotary element (8) in rotation around the main axis of rotation (X) relative to the chassis (2).

3. Device (1) for straightening a metal wire (F) according to any one of the preceding claims, characterized in that it comprises adjustment means (11) which are configured to adjust the angular position of the secondary rotating element (9) relative to the primary rotating element (8) and / or relative to the primary housing (80).

4. Straightening device (1) for a metal wire (F) according to claim 3, characterized in that the adjustment means (11) comprise, on the one hand, a toothed crown (110) which the secondary rotary element (9) comprises, on the other hand, a toothed wheel (111), which cooperates with the toothed crown (110), which the primary rotary element (8) comprises or receives, which is movable in rotation at least relative to this primary rotary element (8) around an axis parallel to the main axis of rotation (X) and, on the other hand, a control member (112), which is integral in rotation with the toothed wheel (111), which the primary rotary element (8) comprises or receives, while the device (1) is configured so that said control member (112) is accessible from outside the rotary system (3).

5. Device (1) for straightening a metal wire (F) according to any one of the preceding claims, characterized in that it comprises reversible locking means (12) which are configured to reversibly lock the secondary rotary element (9) relative to the primary rotary element (8) and / or inside the primary housing (80), this in at least one angular position of the secondary rotary element (9) relative to the primary rotary element (8) and / or relative to the primary housing (80).

6. Straightening device (1) for a metal wire (F) according to claim 5, characterized in that the reversible locking means (12) comprise, on the one hand, a toothed crown (120) which the secondary rotary element (9) comprises, on the other hand, a toothed sector (121), which the primary rotary element (8) comprises or receives, and which is movable between an inactive position and an active position of cooperation with the toothed crown (120) and, on the other hand, control means (122), which the primary rotary element (8) comprises or receives, which are associated with the toothed sector (121), and which are configured to control the movement of the toothed sector (121) between the active position and the inactive position of cooperation with the toothed crown (120).

7. Device (1) for straightening a metal wire (F) according to claim 6, characterized in that the control means (122) comprise at least one control member (123), which comprises or which receives the primary rotating element (8), which receives the toothed sector (121) or which is equipped with the toothed sector (121), and which is movable relative to the primary rotating element (8) as well as relative to the secondary rotating element (9), this between a first position which corresponds to the inactive position and a second position which corresponds to the active position of cooperation between the toothed sector (121) and the toothed crown (120).

8. Device (1) for straightening a metal wire (F) according to claim 7, characterized in that the control means (122) further comprise at least one return means (124), which cooperates with the primary rotary element (8) and with the control member (123), and which is configured to drive the control member (123) from the first position to the second position.

9. Device (1) for straightening a metal wire (F) according to any one of claims 6 to 8, characterized in that it is configured so that the control means (122) are accessible from outside the rotary system (3) and / or said primary rotary element (8).

10. Device (1) for straightening a metal wire (F) according to any one of the preceding claims, characterized in that it comprises reversible immobilization means (13) which are configured to reversibly immobilize said at least one central receiving means (4) relative to the secondary rotary element (9) and / or inside the secondary housing (90).

11. Straightening device (1) for a metal wire (F) according to claim 10, characterized in that the reversible immobilization means (13) are configured to reversibly immobilize said at least one central receiving means (4) relative to the secondary rotary element (9) and / or inside the secondary housing (90), this under the effect of the rotation of the secondary rotary element (9) relative to the primary rotary element (8).

12. Straightening device (1) for a metal wire (F) according to claim 10, characterized in that the reversible immobilization means (13) comprise, on the one hand, a groove (130) which comprises said at least one central receiving means (4), on the other hand, a latch (131), which comprises the secondary rotary element (9), and which is movable between an inactive position and an active position of cooperation with the groove (130), and, on the other hand, control means (132) which are configured to control the movement of the latch (131) between the inactive position and the active position of cooperation between the latch (131) and the groove (130).

13. Straightening device (1) for a metal wire (F) according to claim 12, characterized in that the control means (132) comprise, on the one hand, a cam path (133) which the primary rotary element (8) comprises and, on the other hand, a cam follower (134), which is associated with the latch (131), and which cooperates with the cam path (133).

14. Straightening device (1) for a metal wire (F) according to any one of claims 12 or 13, characterized in that the control means (132) comprise at least one return means (135), which comprises the secondary rotary element (9), which cooperates with the secondary rotary element (9) and the latch (131), and which is configured to drive the latch (131) from the active cooperation position to the inactive cooperation position of the latch (131) with the groove (130).

15. Straightening device (1) according to any one of the preceding claims, characterized in that it comprises means for driving in rotation (15) the rotary system (3), these means for driving in rotation (15) comprise, on the one hand, a motor (150), which is offset laterally relative to the rotary system (3), and which comprises a rotor whose axis of rotation is parallel to the main axis of rotation (X) and, on the other hand, at least one transmission means (151) which cooperates with the rotor of the motor and with the rotary system (3).