EP2155955B1 - Double-twist bunching machine - Google Patents

Abstract

The invention relates to a double-twist bunching machine for producing bunched strand material (14), in particular wires, with an inlet (17) for individual strands (12) which can be supplied to a first deflection point (18) which has a first deflection roller (19), wherein the first deflection roller (19) is arranged in a manner such that it can rotate about an axis of rotation (21) in order to form a first twist, with a hoop (24) which rotates about the axis of rotation (21) and connects the first deflection point (18) to a second deflection point (26), wherein the second deflection point (26) has at least one second deflection roller (32) which is rotatable about the axis of rotation (21) in order to form a second twist.

Description

The invention relates to a double impact Verlitzmaschine according to the preamble of claim 1.

From the JP 02 293 482 A is a Verlitzmaschine known, which is provided for the stranding of single strands to a strand or a strand. This Verlitzmaschine has a rotating bracket, at the respective end deflection or deflection rollers are provided. In the interior of the rotating bracket, a perforated disc is rotated via a rotary-driven ring, so that the supplied single strands are stranded to a stranded verlitzten. So that the individual wires of the Verlitzeinrichtung can be supplied, two mutually associated pull rollers are provided, which subtract the single strands from a roll and fed to the take-off rollers via a first bracket. After stranding the strands the strand is led out by means of a further bracket and a deflection roller in order to process this stranded wire.

From the DE 35 00 949 A1 a double-twist Verlitzmaschine has become known, which is provided for the stranding of single strands to a strand or to a strand. The single strands are fed via an inlet of the Verlitzmaschine a first deflection point. At this first deflection point, a deflection roller is provided in order to guide the supplied single strands along a rotating bracket, which leads to a second deflection point. At this second deflection point, a deflection roller is provided in order to guide the extruded material into a rotation region of the rotating stirrup, in which a coil for winding up the stranded material being stranded is arranged. The first and second deflection rollers in the first and second deflection point lie in a rotation axis of the bracket. It is thereby achieved that at the first deflection point a first impact and at the second deflection point a second impact for the twisting of the individual strands is achieved in order to strand the individual strands into a continuous material.

Such a double-twist Verlitzmaschine has the disadvantage that the storage volume of the coils for the strand extruded is limited by the enclosed rotation range of the bracket. Although the use of very large rotary hoops and small strand diameters makes it possible to achieve a high storage capacity of the reels, the number of strokes and, thus, the operating speed of the double weft stranding machine are reduced because of the larger bracket to be formed. Due to the increased inertial mass, the rotational speed decreases. If the rotating bracket is made small with the size, the storage volume of the coils is reduced, so that increased service life for the change of the bobbin are required. In both cases, the productivity of the double-dash Verlitzmaschine decreases.

From the DE 33 47 739 A1 a Verlitzmaschine has become known, which is intended for the stranding of individual wires. In this Verlitzmaschine the take-up reel for the stranded stranded outside the rotation range of a Verlitzrotors provided whereby the size of the bracket is not determined by the storage volume of the coils. This Verlitzrotor comprises a housing in which rotating rollers are provided, so that when rotating the Verlitzrotors the Stranggut is guided along the rollers. This stranding rotor is followed by a roller pair, which is connected via a gear arrangement with the first stranding rotor. For stranding the individual wires, it is provided that the first stranding rotor operates at a simple rotational speed and rotates the separate and downstream stranding pair at twice the rotational speed with respect to the first stranding rotor. As a result, a stranded composite is achieved. This device has the disadvantage that a structurally complex construction is given by the different rotational speeds and a gearbox interposed therebetween. In addition, a considerable amount of space is required. Furthermore, by such a constructive arrangement, the processing speed is limited by twice the rotational speed of the stranding roller pair located and connected outside the stranding rotor.

The invention is therefore based on the object to provide a double-twist Verlitzmaschine which allows high processing speed or stroke rates, which are largely independent of the coil size and the storage volume of the coil and largely independent of the strand cross-section.

This object is achieved by the features of claims 1 and 6, respectively.

The embodiment of the invention makes it possible for the extruded material to wrap around the at least one further deflecting roller after the feed to the deflecting device, then to the second deflecting roller, wherein the extruded material intersects the feed direction to the feed point and then wraps around the second deflecting roller so that the extruded material passes over the withdrawal point from the deflection is herausführbar. The withdrawal point is preferably in the second deflection point. By this leadership of the stranded around the second and at least one further deflection roller of the deflection device enables a rotation or twisting of the material to be stranded. The second and at least one further deflection roller are preferably rotatably mounted about its longitudinal axis in order to enable high processing speeds.

Due to the configuration of the deflection device in the second deflection point, it is further made possible for the stranded strand material to be guided out of the rotation region of the rotating stirrup after the second impact and fed to a coil arranged outside the rotation region of the stirrup, allowing the size of the rotating stirrup to be independent can be designed by the storage volume of the coil. As a result, smaller straps can be created in the length, which higher impact numbers are possible. These lead to higher production speeds and enable higher output. At the same time a significantly lower power consumption is achieved by the use of smaller brackets in relation to the double-Verlitzmaschine according to the prior art, as a lower drive power required.

In addition, reduce the cost of wear for smaller temples, as they are cheaper to manufacture and require less guide elements for the stranded material to be stranded. Furthermore, the embodiment according to the invention has the advantage that coil bodies of different size can be used for storing the stranded stranded material, the strand diameter does not affect the production time due to increased bobbin change and that a flying bobbin change is possible outside the Verlitzbereichs.

Furthermore, this inventive design of the deflection with at least two pairs aligned and rotatably mounted about the axis of rotation of the strap deflection rollers has the advantage that a safe and accurate guidance of the material and high stranding speeds allows for stranding are. In this arrangement, it is provided that the second deflection roller has a lying in the axis of rotation of the bracket deflection point.

It is preferably provided that the longitudinal axis of the at least one further deflection roller is arranged parallel to the second deflection roller to form a deflection device. As a result, simple geometric conditions are created, which in particular also allow high rotational speeds, so that such a deflection device, the high processing speed, which is possible due to a rotating bracket, not limited. The axes of rotation of the deflection rollers are preferably aligned by the deflection device at right angles to the axis of rotation of the bracket. In particular, the axis of rotation of the bracket between the two longitudinal axes of the pulleys.

According to a further advantageous embodiment of the invention, it is provided that between the feed point and the discharge point of the deflection, the stranded stranded material is guided at least once with a full wrap around the at least two pulleys. This complete looping additionally ensures that unraveling of the stranded material during the passage through the deflection device does not occur.

This deflection with at least two pairwise associated pulleys is preferably associated with a leading role and upstream, which leads the strand to the deflection, wherein the guide roller is laterally offset from the axis of rotation of the bracket and supplies the strand of the off-center feed point of the deflection. As a result of the rotation of the at least two deflecting rollers about the axis of rotation, this lateral offset between the draw-off point and the feed point effects the second stroke for the strand material to be stranded. The lateral offset is preferably kept small in order to keep an imbalance as low as possible, while at the same time preferably ensuring that the individual wraps are guided around the pulleys separated from each other. It is preferably provided that these deflection rollers of the deflection have at least partially trough-shaped depressions to support the strand in the Umschlingungsführung.

According to a preferred embodiment of the invention, it is provided that the deflection device has at least one further guide roller, which is arranged between the rotating bracket and the second deflection roller. As a result of this further guiding role, a change of direction for leading out the material to be extruded is made possible from the rotation region of the rotating stirrup or from the Verlitzmaschine. This guide roller is directly associated with the rotating bracket and first performs a portion of the strand material in the direction of rotation of the bracket before the second guide roller causes a reversal and along the axis of rotation of the rotating bracket after formation of the second shock the stranded stranded material from the rotation region of the bracket out leads. It is preferably provided that the looping of the second deflection roller for a reversal of direction comprises a range of 85 ° to 275 ° before the strand material leaves the second deflection roller at the take-off point.

According to an alternative embodiment of the invention, it is provided that the double-stroke Verlitzmaschine in the end region of the bracket in the second deflection point has a deflection, which consists only of a second deflection roller, and the withdrawal point of the material in the rotation axis of the bracket. This second deflection roller is also rotatably mounted about the rotation axis, wherein preferably the first and second deflection roller are arranged on the same side to the rotation axis or between the rotation axis and the bracket. Furthermore, it is provided that the further deflection roller on the peripheral surface has a circumferential, provided with a pitch groove-shaped depression, which allows at least a full wrap of the strand material. By this embodiment, a simplified embodiment of a deflecting device with respect to the previously described embodiment according to the invention can be provided. In this embodiment, the second deflection roller is preferably rectified to the axis of rotation as the first deflection roller is formed. This means that the direction of a distance between the turning point the axis of rotation of the first deflection roller is the same as the direction of the distance from the second deflection point to the axis of rotation of the second deflection roller. As a result of this configuration of the deflection roller, it is provided that this second deflection roller rotates about the second deflection point and the strand material to be stranded is fed outside the rotation axis of the second deflection roller. By the at least one full wrap a secure twisting or twisting of the strand material is achieved. This embodiment has the advantage that a small number of moving components and thus a low mass to be moved and a small unbalance to be compensated is given.

According to a preferred embodiment of the invention, it is provided that the deflection device is formed by the rotating bracket and the second guide roller, wherein the second guide pulley is arranged to the rotating bracket such that the supplied over the bracket Stranggut the second guide roller for direct lead out of the rotating Area of the temple is supplied. The introduction of a second impact by the second deflection roller is maintained. By this arrangement, a reduction of the moving masses can be achieved.

According to a further preferred embodiment of the invention it is provided that the deflection device has an outlet, which lies in the axis of rotation of the first and second deflection point. As a result, the basic principle of the double-impact Verlinden be maintained and a structurally simple design for leading out the stranded stranded material from the rotating portion of the bracket or the Verlitzmaschine be achieved.

The deflection device preferably has a base body, which receives the second deflection roller and to which the rotating bracket is releasably attached. This allows a simple structural design can be achieved. At the same time, the moving masses can be reduced.

The deflecting device has a rotary bearing around which the main body rotates about the axis of rotation of the rotating stirrup is included. This pivot bearing is firmly connected to a machine frame or machine frame. The rotary bearing is preferably designed as a roller or sliding bearing to accommodate the high rotational speeds. The rotary bearing preferably comprises a through hole in order to discharge the stranded extruded material out of the rotation region of the bracket to the outside. The pivot bearing is formed for example as a tubular or cylindrical component, which has one or more roller, rotary or sliding bearing for receiving the main body.

The deflection device preferably has a Verlitzstein, guide stone or guide bush, which is provided in the rotary bearing rotation. As a result, a controlled lead out of the stranded stranded material from the rotating area of the bracket or from the double-stroke Verlitzmaschine can be achieved. Such Verlitzsteine cause the stranded with two strokes Stranggut can not turn up after passing through the Verlitzsteines, but maintains the stranded or twisted arrangement.

The Verlitzstein is preferably provided interchangeable in the deflection. About a stop this can be quickly and easily positioned in the correct position. Due to the wear of this Verlitzstein is preferably formed of ceramic, carbide, steel with ceramic coating, natural or industrial diamond.

On the main body of the deflection device, a drive element is preferably provided for rotating driving, on which a drive unit engages. As a drive element, a toothed wheel, a pulley, a pulley or the like may be provided to apply the required speed for the working speed via a drive motor and possibly a coupling element of the drive unit

The advantageous arrangement of the coil outside the rotation range of the bracket allows the rotational speed is independent of the size of the coil. The rotational speed can thus be adapted to the other structural conditions and the size of the strand diameter. So far, the rotational speed was dependent on the coil size, that is, for very large coils had to be worked due to the centrifugal forces occurring at a low rotational speed.

Figur 1

eine schematische Ansicht der erfindungsgemäßen Doppel- schlag-Verlitzmaschine,

Figur 2

eine schematisch vergrößerte Ansicht einer Umlenkeinrich- tung zum Herausführen des verlitzten Stranggutes aus der Doppelschlag-Verlitzmaschine,

Figur 3

eine alternative Ausführungsform einer Umlenkeinrichtung zu Figur 2,

Figur 4

eine schematische Ansicht einer weiteren erfindungsgemä- ßen Doppelschlag-Verlitzmaschine und

Figur 5

eine schematisch vergrößerte Ansicht einer Umlenkeinrich- tung der erfindungsgemäßen Doppelschlag-Verlitzmaschine gemäß Figur 4.

The invention and further advantageous embodiments and developments thereof are described in more detail below with reference to the examples shown in the drawings and explained. Show it:

FIG. 1

a schematic view of the double impact Verlitzmaschine invention,

FIG. 2

2 is a diagrammatically enlarged view of a deflection device for removing the stranded stranded material from the double-lap hedging machine;

FIG. 3

an alternative embodiment of a deflection FIG. 2 .

FIG. 4

a schematic view of another inventive double-stroke Verlitzmaschine and

FIG. 5

a schematically enlarged view of a deflection device of the double impact Verlitzmaschine invention FIG. 4 ,

In FIG. 1 a schematic side view of a double-twist Verlitzmaschine 11 is shown. This double-stroke Verlitzmaschine 11 is used for stranding or twisting of several individual strands 12 to a stranded stranded 14. For example, several individual wires are twisted into a strand of wire. In this case, strand cross-sections of, for example, 0.05 mm ² to, for example, 70 mm ² can be processed.

The double Verlitzmaschine 11 is preferably surrounded by a cabin 16, which is provided for safety and sound insulation. Outside the cabin 16, a non-illustrated storage space for coils for providing and supplying single strands 12 or multiple strands is provided. About an inlet 17 enter the single strands 12 to a first deflection point 18. This first deflection point 18 comprises at least one first deflection roller 19, which is mounted rotatably about a rotation axis 21 on a machine frame 22. The rotation axis 21 preferably also corresponds to a feed axis of the inlet 17. The first deflection point 18 receives one end of a bracket 24 which is fixed at an opposite end to a second deflection point 26. The bracket 24 is thereby rotatably supported about the rotation axis 21. Such brackets 24 are formed, for example, from carbon fibers or composite materials and have a plurality of guides 27 or rollers, through which the individual strands are guided from the first to the second deflection point 18, 26. These guides 27 are preferably arranged as ceramic guide elements replaceable on the bracket 24.

The second deflection point 26 is formed by a deflection device 31 which comprises at least one second deflection roller 32, through which the individual strands 12 can be brought out of the cabin 16 via a discharge 34 as stranded material 14 which has been stranded. This second deflection device 31 is attached to the machine frame 22 and arranged rotatably about the rotation axis 21.

Outside the cabin 16, a coil 36 is arranged, which is provided for winding and storing the stranded stranded material 14. Furthermore, a trigger gear 37 is preferably provided outside the cab 16, to ensure a lead out of the stranded stranded material 14 from the working area of the double-twist Verlitzmaschine 11. In addition, a laying device 38 may be arranged in front of the bobbin 36 in order to allow a uniform winding of the stranded stranded material 14 onto the driven bobbin 36. Alternatively, the spool 36 can be mounted traversing to ensure the uniform laying of the male material to be absorbed. Furthermore, a buffer may be provided outside the cab 16, which is followed by a double winder with automatic changing device. As a result, a continuous processing by a flying change of the coils may be possible.

An in FIG. 1 shown first embodiment of the deflection 31 is in FIG. 2 shown enlarged. This deflection device 31 comprises a base body 41, which is received by a pivot bearing 42 about the rotation axis 21 rotatable to the machine frame 22. On the main body 41, the second guide roller 32 is rotatably mounted, which rotates about the second deflection point 26 to apply a second impact on the over the bracket 24 supplied single strands 12. This second deflection point 26 simultaneously forms a withdrawal point of the strand material 14 from the deflection roller 32. The supply of the individual strands 12 to the second deflection roller 32 via a guide roller 44, which takes over the supplied single strands 12 from the bracket 24 and deflects, so that generates a change of direction in the feed direction becomes. Subsequently, the strand material of the deflection roller 32 is fed to a feed point 33 and wraps around the deflection roller 32 preferably in a range between 75 ° and 285 °. As a result, the stranded product 14 can be led out of the working region or rotation region of the bracket 24 after leaving the second deflection point 26. The bracket 24 is releasably secured with its second end on the base body 41.

In the base body 41, a through hole is provided, in which the pivot bearing 42 is inserted. At a arranged outside of the body 41 end of the pivot bearing 42 is fixedly connected to the machine frame 22. The rotary bearing 42 has a central through-bore 43, which forms at least part of an outlet 34. At least one Verlitzstein 46 is provided interchangeably in the central through hole 43, through which the stranded stranded material 14 is passed and secured against independent Aufdrillen. The Verlitzstein 46 is arranged interchangeable in the pivot bearing 42 and is preferably on a stop 47 to ensure a defined position and an independent release of the pivot bearing 42. Furthermore, the at least one Verlitzstein 46 can be arranged outside the deflection 31 as a separate unit in or outside the cabin 16. By the embodiment according to FIG. 2 However, a particularly compact arrangement is possible.

On the main body 41, a drive element 48 is fixed, on which a drive unit 49 for the rotary drive of the main body 41 engages.

In FIG. 3 is an alternative embodiment of a deflecting device 31 to FIG. 2 shown. In this deflection device 31, the supply of the individual strands 12 via the bracket 24 takes place such that the individual strands are deflected directly after leaving the bracket 24 by the second guide roller 32 and transferred to the outlet 34. As a result, a simplification in the design can be achieved. In addition, one or more further guide rollers 51 may be provided in the end region of the bracket 24 in order to ensure an exact transfer of the individual strands 12 to the second guide roller 32. Otherwise, the statements on the deflection device 31 apply according to FIG FIG. 1 and 2 ,

As a further alternative embodiment of the bracket 24, which can take a different course of the arc depending on the rotational speed, it is possible that a fixed frame or a cage for guiding the individual wires 12 may be provided.

The outside of the rotation range of the bracket 24 arranged coil 36 further allows that a device for flying bobbin change the double lay Verlitzmaschine 11 can be followed. Alternatively, a storage unit may be provided outside the Verlitzmaschine 11, which caches the stranded stranded during a bobbin change, so that a continuous operation of the Verlitzmaschine is possible.

Due to the arrangement of the coil 36 outside the rotation range of the bracket 24, the flexibility of the double-twist Verlitzmaschine 11 is flexible in view of the processed diameter of the individual strands 12 and the strand cross-section. In addition, different storage volumes of extruded material can be realized.

In FIG. 4 is a schematic view of another embodiment of the invention a double-twist Verlitzmaschine 11 is shown. This embodiment deviates in the embodiment of the deflecting device 31 from the previously described embodiment and will be explained in more detail below. Incidentally, reference is made to the above figures with respect to the structure and the embodiments in full.

The deflecting device 31 differs from the embodiment of the FIGS. 1 and 2 not only a second deflection roller 32, but comprises at least one further deflection roller 55, which is associated with the second deflection roller 32. The arrangement of the two pulleys 32, 55 and the looping through the strand between the guide roller 44 and the Verlitzstein 46 or the lead-out of the stranded stranded material 14 from the deflection 31 is in FIG. 5 shown in more detail. In the in FIG. 4 shown working position of the Verlitzmaschine 11 is a central axis of the guide roller 32 mirror image to the longitudinal axis of the first guide roller 19 with respect to the rotation axis 21. The second guide roller 32 is therefore arranged opposite to the first embodiment of the rotation axis 21 opposite with respect to the first guide roller 19. However, it is provided that a second deflection point 26, which forms a take-off point from the second deflection roller 32, lies in the axis of rotation 21. The further deflection roller 55 is located opposite the second deflection roller 32 on the other side of the rotation axis 21. As a result, between the second deflection roller 32 and the further deflection roller 55, a distance or gap is formed which is traversed at right angles by the rotation axis 21. The two guide rollers 32, 55 are preferably aligned parallel to each other. The deflection roller 32 and the further deflection roller 55 are preferably aligned at right angles to the axis of rotation 21. The distance between the two deflection rollers 32, 55 is preferably kept low. In the main body 41, the deflection rollers 32, 55 are preferably received rotatably mounted. These can be arranged or accommodated in a simple manner interchangeable.

The stock 14 coming from the bracket 24 is deflected by the guide roller 44 and fed to the further deflection roller 55 at the feed point 33. This feed point 33 is preferably in the intermediate space formed between the two deflection rollers 32, 55. Subsequently, a looping around the deflection roller 55 by a three quarters wrap. The extruded material 14 is then guided around both deflection rollers 32, 55 at least once with a looping around. Subsequently, another three-fourth wrap around the second guide roller 32, before the strand 14 is led out to the second deflection point 26 and the withdrawal point from the deflection 31 and pulled through, for example, by the Verlitzstein 46. The wrapping arrangement is preferably provided such that the individual sections of the material to be stranded 14 are each separated, so that a friction between the individual sections of the strand material 14 is not given. Preferably, the pulleys 32, 55 depressions for guiding the material to be stranded 14 have. Furthermore, it can be provided that one or both deflection rollers 32, 55 are driven in rotation.

The longitudinal axes of the second deflection roller 32 and further deflection roller 55 lie in a common plane. This plane can be aligned perpendicular to the axis of rotation both with respect to the first direction of extension along the longitudinal axes perpendicular to the axis of rotation 21 and with respect to the further direction of extent which connects the two longitudinal axes with each other. Alternatively, it can also be provided that the plane with respect to the further extension direction, which traverses the two longitudinal axes, is arranged at an angle inclined to the axis of rotation 21, as for example in FIG FIG. 4 is shown.

The feed point 33 on the further deflection roller 55 is provided at a distance I spaced from the withdrawal point in the second deflection point 26 of the second deflection roller 32. This distance I or lateral offset is in relation to the distance between the first deflection point 18 and the second deflection point 26 is much smaller or the distance between the first and second deflection point 18, 26 amounts to a multiple of the distance I between the feed point and the take-off point of the material to be stranded 14 in the deflection device 31 according to the FIGS. 4 and 5 ,

Furthermore, it may alternatively be provided that instead of the in FIG. 5 shown at least one full wrap between the second guide roller 32 and the further guide roller 55 are each provided only three-quarters wraps.

In the FIG. 5 described in more detail type of twisting can in an analogous manner in the embodiments of the double-twist Verlitzmaschine 11 according to the FIGS. 2 and 3 be provided. For this purpose, instead of in FIGS. 2 and 3 described pulleys 32, a modified guide roller 32 is used, which has on the outer circumference or its lateral surface a circumferential groove-shaped recess which is provided with a slope. This grooved recess thus extends on the peripheral surface in the manner of a thread or a screw. The groove-shaped depression is provided in such a way that at least one full wrap of the material to be stranded can be guided around the peripheral surface. The withdrawal point of the material to be stranded at the second deflection point remains in the axis of rotation. The supply of the stranded material to be stranded thus takes place outside the axis of rotation 21st

In the embodiment according to FIG. 2 For the use of the modified second deflection roller 32, the upstream guide roller 44 and the end of the bracket 24 associated with the guide roller 44 are provided laterally offset from the second deflection point 26. This lateral offset corresponds at least to the distance that is required in order to realize a full looping of the strand material 14 about the second deflection roller 32, so that the strand material 14 can be pulled off exclusively at the deflection point 26.

This arrangement described above applies analogously to the embodiment of FIG. 3 when using the modified guide roller 32, wherein in this embodiment, only the bracket 24 is disposed slightly outside the axis of rotation 21 of the stranded material 14 to be stranded. Depending on the number and the diameter of the individual strands to be stranded to a continuous material 14, only one full wrap as well as several full wraps can be provided, so that accordingly the second guide roller 32 is adapted thereto. Depending on this, the arrangement of the eccentric offset of the bracket 24 and the guide roller 44 to a substantially rectilinear feed of the stranded material to be stranded 14 to the second guide roller 32 is made possible.

Claims (13)

1. A double-twist bunching machine for fabricating bunched strand material (14), in particular wires, having an inlet (17) for individual strands (12) which may be supplied to a first deflection point (18) that has a first deflection roller (19), the first deflection roller (19) being arranged so as to be rotatable around an axis of rotation (21) for forming a first twist, a bow (24) rotating about the axis of rotation (21) and connecting the first deflection point (18) with a second deflection point (26), the second deflection point (26) having at least one second deflection roller (32) that is rotatable about the axis of rotation (21) for forming a second twist, and a spool (36) onto which the bunched strand material (14) is wound and which is arranged outside the range of rotation of the bow (24), wherein the second deflection roller (32) and at least one further deflection roller (55), which is assigned to the second deflection roller (32), form a deflection device (31) mounted in pairs in a manner such that they can rotate about the axis of rotation (21), and in that a supply point (33) for the strand material (14) is provided on the further deflection roller (55) which lies between the second and the at least one further deflection rollers (32, 55), and a pull-off point of the strand material (14) is provided on the second deflection roller (32) which lies in the second deflection point (26) on the axis of rotation (21), characterised in that the strand material (14) after having passed the supply point (33) of the further deflection roller (55) twines itself and is supplied to the second deflection roller (32), the strand material (14) crossing the supply direction to the supply point (33) and twining itself subsequently around the second deflection roller (32), such that the strand material (14) is guided out of the deflection device (31) at the second deflection point (26).
2. The double-twist bunching machine of claim 1, characterised in that the second and the at least one further deflection rollers (32, 55) are aligned parallel with each other and that their longitudinal axes are preferably perpendicular to the axis of rotation (21).
3. The double-twist bunching machine of any of the preceding claims, characterised in that between the supply point (33) and the second deflection point (26) the bunched strand material (14) is guided in such a manner that it twines itself at least once, by a full twist (56), around the second deflection roller (32) and the at least one further deflection roller (55).
4. The double-twist bunching machine of any of the preceding claims, characterised in that the deflection device (31) comprises a guide roller (44) which is laterally offset with respect to the axis of rotation (21) and supplies the strand material (14) to the supply point (33) of the at least one further deflection roller (55), which is offset from the axis of rotation (21).
5. The double-twist bunching machine of claim 4, characterised in that the deflection device (31) has at least one further guide roller (44) which is arranged between one end of the bow (24) assigned to the deflection device (31) and the second deflection roller (32).
6. A double-twist bunching machine for fabricating bunched strand material (14), in particular wires, having an inlet (17) for individual strands (12) which may be supplied to a first deflection point (18) that has a first deflection roller (19), the first deflection roller (19) being arranged so as to be rotatable around an axis of rotation (21) for forming a first twist, a bow (24) rotating about the axis of rotation (21) and connecting the first deflection point (18) with a second deflection point (26), the second deflection point (26) having at least one second deflection roller (32) that is rotatable about the axis of rotation (21) for forming a second twist, and a spool (36) onto which the bunched strand material (14) is wound and which is arranged outside the range of rotation of the bow (24), wherein the second deflection point (26) a deflection device (31) consisting of a second deflection roller (32) is provided which rotates about the axis of rotation (21) and has a pull-off point of the strand material (14) from the second deflection roller (32) which lies in the deflection point (26), and in that the first and second deflection rollers (19, 32) are arranged between the bow (24) and the axis of rotation (21), characterised in that the further deflection roller (32) is provided with a circumferential, groove-shaped recess having a pitch so as to allow the strand material (14) to twist itself at least once fully around the roller.
7. The double-twist bunching machine of claim 6, characterised in that the end of the bow (24) facing to the deflection device (31) and the second deflection roller (32) in the deflection device (31) are arranged in such a manner that the bunched strand material (14) upon leaving the bow (24) is directly supplied to the second deflection roller (32) and is guided out of the range of rotation of the bow (24) via the second deflection roller (32).
8. The double-twist bunching machine of any of the preceding claims, characterised in that the deflection device (31) has an outlet (34) which lies in the axis of rotation (21) of the first and second deflection points (18, 26).
9. The double-twist bunching machine of any of the preceding claims, characterised in that the deflection device (31) has a main body (41) which accommodates at least the second deflection roller (32) and on which one end of the bow (24) is releasably attached.
10. The double-twist bunching machine of any of the preceding claims, characterised in that the deflection device (31) has a rotary bearing (42) by which the main body (41) is accommodated in such a manner as to be rotatable about the axis of rotation (21) and in that the rotary bearing (42) preferably comprises a through hole through which the bunched strand material (14) is guided out of the range of rotation of the bow (24) and drawn towards the outside.
11. The double-twist bunching machine of any of the preceding claims, characterised in that in the outlet (34), in particular in the rotary bearing (42), a bunching die (46), slide block, or guide bush is provided in such a manner as to be secured against rotation.
12. The double-twist bunching machine of claim 10, characterised in that the bunching die (46) is provided so as to be replaceable in the rotary bearing (42) and is preferably positioned against a stop (47).
13. The double-twist bunching machine of any of the preceding claims, characterised in that on a main body (41) of the deflection device (31) a driving member (48) is provided on which a driving unit (49) for rotatably driving the main body (41) is applied.

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