Winding device and method for producing a winding of a strand-shaped winding material on a carrier body

Abstract

The invention relates to a winding device and to a method for producing a winding of a strand-shaped winding material on a carrier body. The winding device is formed with: a winding nozzle (1), which is designed to feed a strand-shaped winding material for winding onto a non-circular carrier body, and in the case of which the strand-shaped winding material exits via a nozzle opening (8) for feeding; a preforming element (2), which is associated with the winding nozzle (1) and is designed to apply an elastic to plastic preload to the strand-shaped winding material exiting from the nozzle opening (8) before the strand-shaped winding material is applied to the carrier body and, for this purpose, to exert a transverse force on the strand-shaped winding material transversely to the longitudinal extent of the strand-shaped winding material; and a displacement system (3) which is designed to move the winding nozzle (1) and the preforming element (2) together relative to the carrier body in order to wind the strand-shaped winding material. The displacement system (3) is further designed to pivot the preforming element (2) about the nozzle opening (8) and thereby change the relative position of the preforming element (2) with respect to the winding nozzle (1).

Description

[0001] Winding device and method for producing a winding of a strand-shaped winding material on a carrier body

[0002] The invention relates to a winding device and a method for producing a winding of a strand-shaped winding material on a carrier body.

[0003] Such technologies are used to wind strand-like winding material, particularly wire material such as copper wire, onto a carrier body for various applications, which in turn can have a wide variety of cross-sectional shapes. For example, windings for coils in electrical machines are produced in this way.

[0004] Document EP 2 309 626 B1 discloses a winding method in which a strand-like winding material fed from a feed device is wound onto a carrier body with a non-circular cross-section by relative movement of the winding material and the carrier body. Before the winding material is deposited on the surface to be wound, a force is exerted transversely to its longitudinal extent. The transverse force exerts an elastic to plastic prestress on the winding material, which influences the behavior of the winding material upon impact with the carrier body and during progressive winding formation in such a way that the tendency of the laid wire to form bulges between bending points is fully or sufficiently partially compensated. The transverse force is activated cyclically by bringing at least one preforming element, which is movable relative to the feed device, into engagement with the strand of winding material.

[0005] Document EP 3 754 822 A1 relates to a winding device and a method for producing a winding of a strand-shaped winding material on a carrier body. The winding nozzle, which feeds the strand-shaped winding material for winding on the carrier body, is assigned a preforming element with which the strand-shaped winding material is subjected to a transverse force transverse to the longitudinal extent of the strand-shaped winding material before the strand-shaped material is placed on the surface of the carrier body. The preforming element, together with the winding nozzle, is pivotable about the longitudinal axis of the winding nozzle, thus maintaining a relative position of the preforming element and the opening of the winding nozzle. The pivoting of the pin-like preforming element enables adjustment of the applied transverse force, which in the known method is continuously maintained along the circumferential surface of the carrier body.

[0006] The object of the invention is to provide a winding device and a method for producing a winding of a strand-shaped winding material on a carrier body, which enable an improved contour-conforming deposit of a strand-shaped winding material on non-circular carrier bodies, so that in particular an undesirable bulge of the strand-shaped winding material deposited on the carrier body is reduced or substantially completely avoided.

[0007] To achieve this object, a winding device and a method for producing a winding of a strand-shaped winding material on a carrier body are provided according to independent claims 1 and 15. Embodiments are the subject of dependent subclaims.

[0008] According to one aspect, a winding device for producing a winding of a strand-shaped winding material on a carrier body is provided, wherein the winding device is formed with the following: a winding nozzle which is configured to feed a strand-shaped winding material for winding onto a non-circular carrier body, and from which the strand-shaped winding material exits via a nozzle opening for feeding; a preforming element which is assigned to the winding nozzle and is configured to subject the strand-shaped winding material exiting from the nozzle opening to an elastic to plastic pre-stress before the strand-shaped winding material is applied to the carrier body and for this purpose to exert a transverse force on the strand-shaped winding material transversely to the longitudinal extent of the strand-shaped winding material;and a displacement system configured to move the winding nozzle and the preform element together relative to the carrier body for winding the strand-like winding material. The displacement system is further configured to pivot the preform element around the nozzle opening and, in doing so, to change the relative position of the preform element to the winding nozzle.

[0009] According to a further aspect, a method for producing a winding of a strand-shaped winding material on a carrier body is provided, the method comprising the following: winding a strand-shaped winding material onto a non-circular carrier body by means of a winding nozzle, from which the strand-shaped winding material exits through a nozzle opening; subjecting the strand-shaped winding material exiting from the nozzle opening to an elastic to plastic pre-stress by means of a pre-forming element which is assigned to the winding nozzle, before applying the strand-shaped winding material to the carrier body, wherein a transverse force is exerted on the strand-shaped winding material transversely to the longitudinal extent of the strand-shaped winding material; and jointly moving the winding nozzle and the pre-forming element relative to the carrier body for winding the strand-shaped winding material onto the carrier body by means of a displacement system.To change the relative position of the preform element to the winding nozzle, the preform element is pivoted around the nozzle opening by means of the displacement system.

[0010] The intended pivotability of the preform element around the nozzle opening and in particular around the longitudinal direction of the winding nozzle, such that the winding nozzle and preform element are displaced relative to one another, enables efficient adjustment of the relative position of the preform element to the winding nozzle and, during operation, the application-related adaptation of the transverse force applied by the preform element to the strand-shaped winding material emerging from the nozzle opening.

[0011] The preform element can, for example, have a pin or a rod shape, at least in an area of ​​the preform element on which the strand-shaped winding material comes to rest.

[0012] When winding the stranded material onto the carrier body, the carrier body, on the one hand, and the winding nozzle and preforming element, on the other, are moved relative to each other, in particular such that the preforming element and winding nozzle are moved together along the surface contour of the carrier body. With the aid of this relative movement, the stranded material is deposited onto the surface of the carrier body, turn by turn and layer by layer. The carrier body onto which the stranded material is applied can have an oval or polygonal cross-section, for example, a rectangular shape.

[0013] In one example, the winding device can be configured for producing a winding for a coil of an electrical machine. In this or other embodiments, the strand-shaped winding material can be a wire material with, for example, a round or square cross-section, such as copper wire. The preform element can be pivoted around the nozzle opening in an angular range of up to 360 degrees. In this way, the largest possible pivoting range is provided for the relative displacement of the preform element and the nozzle opening or winding nozzle by means of the pivoting movement.

[0014] The displacement system can further be configured to change a pivoting position of the preform element and thereby the relative position of the preform element to the winding nozzle during the winding of the strand-shaped winding material onto the carrier body. This configuration makes it possible to change the relative position between the preform element and the winding nozzle during the winding of the strand-shaped winding material onto the carrier body and the relative movement that occurs between the carrier body, on the one hand, and the preform element and winding nozzle, on the other hand, in particular to adjust the transverse force exerted on the strand-shaped winding material by the preform element. This can be carried out while the carrier body, on the one hand, and the preform element and winding nozzle, on the other, are moved relative to one another.

[0015] The displacement system can be configured to arrange, during the winding of the strand-shaped winding material (i) during application of the strand-shaped winding material in a first region of the carrier body, the preforming element in a first pivoting position relative to the winding nozzle, in which the preforming element applies a first transverse force to the strand-shaped winding material, and (ii) during application of the strand-shaped winding material in a second region of the carrier body, which is different from the first region, to displace the preforming element by pivoting about the nozzle opening into a second pivoting position relative to the winding nozzle, which is different from the first pivoting position, wherein the preforming element applies a second transverse force, which is different from the first transverse force, to the strand-shaped winding material in the second pivoting position, or applies no transverse force.In the first and second pivot positions, the strand-shaped winding material is subjected to different transverse forces, wherein in one of the pivot positions it can be provided that no transverse force at all is exerted on the strand-shaped winding material, in particular the strand-shaped winding material does not come into contact with the preform element, so that there is at least temporarily no contact between the strand-shaped winding material and the preform element, but rather a distance is formed. During the transition between the first and the second pivot position, the transverse force can be increased or reduced. For example, it can be provided that no or a lower transverse force is applied during the so-called head travel of the winding nozzle and preform element relative to the carrier body.Such a head movement is carried out, for example, when the strand-shaped winding material is placed on a front or narrow side of the surface of the carrier body during winding, whereby the winding nozzle is then moved opposite the front or narrow side.

[0016] In this or other embodiments, the displacement system can be controlled by means of an associated control device configured to control the movements of the winding nozzle, preform element, and / or carrier body provided by the displacement system according to control parameters. Using the control parameters, for example, one or more actuators are controlled during winding operation to execute the desired movements. The control device can be configured using software for this purpose.

[0017] In one embodiment, the transition between the first and second pivot positions and the associated change in the transverse force can be initiated by the control device depending on a current or instantaneous relative position of the winding nozzle and preform element relative to the carrier body. For example, a transition between different pivot positions of the preform element relative to the winding nozzle can be provided when the winding nozzle and preform element are located opposite a corner or edge area of ​​the carrier body during winding.

[0018] The transition to a pivoting position, in which the strand-shaped winding material is not subjected to any transverse force by the preforming element, can be provided, for example, at the time of a winding or layer jump during winding of the strand-shaped winding material on the carrier body. This allows, for example, the winding nozzle, in particular the nozzle opening, to be displaced relative to the carrier body to execute the jump, for example, toward it, without this being adversely hindered by the preforming element applying a transverse force to the strand-shaped winding material.

[0019] The displacement system can further be configured to carry out the displacement of the preform element between the first and second pivot positions as a continuous pivoting movement of the preform element, such that the transverse force changes continuously from an actual state (existing transverse force) to a target state (changed transverse force). The continuous pivoting movement between the first and second pivot positions can in particular be carried out as an uninterrupted movement between the first and second pivot positions. For example, the continuous pivoting movement can be used to reduce the applied transverse force on the path from the winding nozzle and preform element towards a corner or edge region of the carrier body. Alternatively, the transition between the first and second pivot positions can occur instantaneously or abruptly (discontinuously) at a time during the winding process.

[0020] The transverse force acting on the strand-shaped winding material can be cyclically activated by means of the displacement system. In this embodiment, the transverse force acting on the strand-shaped winding material is not continuous or ongoing. Rather, the application of the transverse force is interrupted once or several times during winding. Thus, it can be provided that the transverse force does not act continuously on the strand-shaped winding material during the formation of a turn on the carrier body, but is cyclically activated with respect to a contour area of ​​a surface line of the carrier body. The application and non-application of the transverse force to the strand-shaped winding material can be controlled by means of a control device assigned to the displacement system, for example, depending on an impact point at which the strand-shaped winding material strikes the surface of the carrier body.While no transverse force is applied in a first area of ​​the surface of the carrier body, for example in the area of ​​an end or narrow side of the carrier body, the transverse force is applied when the strand-shaped winding material impacts a second area of ​​the surface of the carrier body during winding, for example in the area of ​​a long side of the carrier body.

[0021] The displacement system can be configured to maintain the transverse force acting on the strand-shaped winding material with a substantially constant transverse force during the winding of the strand-shaped winding material onto the carrier body. In contrast to cyclic activation, the displacement system in this embodiment is configured to maintain the transverse force substantially constant during the formation of a winding along the surface of the carrier body, for example, during the production of a complete turn, particularly when the formation of the winding includes one or more head passes.

[0022] The displacement system can further be configured to displace the preform element parallel to the axial direction of the winding nozzle. In particular, the preform element can be displaced in this way relative to the nozzle opening of the winding nozzle, for example by displacing the preform element alone, for example into a position adjacent to the nozzle opening or a position remote from the nozzle opening. In this way, it is possible, for example, to reset the preform element relative to the winding nozzle parallel to the axial direction of the winding nozzle, so that the winding nozzle can be displaced relative to the carrier body during winding without there being a risk of collision between the carrier body and the preform element, for example when inserting the winding nozzle into a groove or gap in the carrier body.The selective displacement of the preform element without simultaneously displacing the winding nozzle can further reduce the mass to be moved during the displacement movement, whereby the displacement speed can be increased compared to a movement of the winding nozzle and preform element together.

[0023] The displacement system can also be configured to subject the winding nozzle to at least one of the following movements: rotating the winding nozzle around its own longitudinal axis and displacing the winding nozzle in the axial direction of the winding nozzle. In this way, the displacement system allows additional degrees of freedom with respect to the movement of the winding nozzle, for example, also relative to the preform element.

[0024] Displacing the winding nozzle in the axial direction during winding without moving the preform element, thereby creating a relative movement between the winding nozzle and the preform element, makes it possible, for example, to reduce the mass that actually needs to be moved during displacement by means of the displacement system or a displacement device assigned to the winding nozzle. This allows for a higher displacement speed, making the winding process more time-efficient. For example, a feed movement of the winding nozzle toward the carrier body can be carried out with minimized mass to be moved and thus faster, for example as a diving or dipping movement (displacing toward the carrier body) during the head travel during winding.

[0025] Rotating the winding nozzle about its own longitudinal axis makes it possible, in one embodiment, to rotate the winding nozzle about its longitudinal axis, while the winding nozzle and preforming element are displaced together relative to the carrier body during winding, for example, rotated around it. Thus, it can be provided to arrange the winding nozzle in a first rotational position when the winding nozzle and preforming element are arranged opposite a first section of the surface of the carrier body during winding, for example, opposite a long side, in order to then displace the winding nozzle into a second rotational position, which is different from the first rotational position, when the preforming element and winding nozzle are arranged opposite a second section of the surface of the carrier body during winding, which is different from the first section, for example a narrow or end side.Moving the winding nozzle, whether by rotating it around its own longitudinal axis and / or moving it along the axial direction, changes the relative position of the winding nozzle and the preform element to each other.

[0026] In this or other embodiments, the displacement system can be formed with a first displacement device associated with the winding nozzle and a second displacement device associated with the preform element. The first and second displacement devices initially enable the respective displacement of the winding nozzle or preform element to be carried out. The first and second displacement devices can be designed separately from one another or partially as an integrated common displacement device.

[0027] In one embodiment, a third displacement device can be provided which is assigned to the winding nozzle and the preform element and is configured to move the preform element and the winding nozzle together relative to the carrier body for winding the strand-shaped winding material onto the carrier body.

[0028] The displacement system can be configured with one or more actuators, such as servomotors, whereby, for example, each displacement device can be assigned at least one actuator. To control the operation of the actuators, they can be connected to the control device.

[0029] The displacement system can further be configured to (i) form a first axial position relative to the preform element during the winding of the strand-shaped winding material in a first region of the carrier body for the winding nozzle, in which first axial position the strand-shaped winding material comes into contact with the preform element for introducing the transverse force in a first element section of the preform element, and (ii) form a second axial position relative to the preform element for the winding nozzle during the winding of the strand-shaped winding material in a second region of the carrier body, which is different from the first region, by means of axial displacement of the winding nozzle and / or the preform element, said second axial position being different from the first axial position, wherein the strand-shaped winding material comes into contact with the preform element in the second axial position for introducing the transverse force in a second element section of the preform element.which is different from the first element section.,

[0030] During the axial displacement of the winding nozzle between the first and second axial positions, the winding material in contact with the preform element slips or slides along the surface of the preform element, whereby the transverse force exerted by the preform element on the strand-shaped winding material remains essentially constant, for example. This makes it possible, for example, to change the relative position of the winding nozzle to the preform element by axially displacing the winding nozzle, for example to perform a turn jump, without necessarily changing the transverse force exerted by the preform element on the strand-shaped winding material.The transverse force application can also be maintained essentially the same if the exit behavior of the strand-shaped winding material from the nozzle opening of the winding nozzle changes, for example an exit angle of the strand-shaped winding material with respect to the longitudinal direction of the winding nozzle.

[0031] In this or other embodiments, a section of the preform element on which the strand-shaped winding material in contact with the preform element slides or slips during the axial displacement of the winding nozzle can be aligned substantially parallel to the axial direction of the winding nozzle.

[0032] A change in the transverse force in the first and second axial positions of the winding nozzle relative to the preforming element can be provided, for example in such a way that the preforming element is simultaneously pivoted about the nozzle opening between the first and second pivoting positions.

[0033] The displacement system can be configured to rotate the preform element together with the winding nozzle about a longitudinal axis of the winding nozzle. Alternatively or additionally, the displacement system can be configured to displace the preform element together with the winding nozzle along the longitudinal axis of the winding nozzle (axial direction). For the joint displacement of the winding nozzle and preform element in such a way that a relative position of the winding nozzle and preform element to one another is not changed, the displacement system can have a further displacement device, which is formed, for example, with a servo motor. In one embodiment, a coupling device is provided with which the winding nozzle and the preform element can be coupled for a joint displacement of the winding nozzle and preform element by means of the displacement system or decoupled for a separate displacement of the winding nozzle and / or preform element by means of the displacement system.

[0034] In order to rotate the preform element together with the winding nozzle about the longitudinal axis of the winding nozzle, it can be provided that the coupling device is configured to detachably couple the first displacement device assigned to the winding nozzle and the second displacement device of the displacement system assigned to the preform element, such that, due to the coupling, the preform element and winding nozzle can be rotated together about the longitudinal axis. The relative position between the winding nozzle and preform element can be maintained by means of the coupling device, in particular also in relation to the axial direction. If the rotation about the longitudinal axis of the winding nozzle is carried out jointly by the preform element and winding nozzle, the displacement devices can be decoupled again.

[0035] In this or other embodiments, the coupling device can be configured or designed to couple the first and second displacement devices only for selected joint movements of the preform element and winding nozzle, for example, joint rotation about the longitudinal axis of the winding nozzle, whereas in the coupled state, a relative displacement of the preform element and winding nozzle in the axial direction of the winding nozzle or preform element can still be carried out. Alternatively, the coupling device blocks the winding nozzle and preform element in the coupled state against any relative movement to one another. This can be provided, for example, for partial sections of the winding of the strand-shaped winding material on the carrier body in order to keep the arrangement of the winding nozzle and preform element as mechanically stable as possible during movement around the carrier body.Decoupling the movements of the winding nozzle and the preform element makes it possible to reduce the mass to be moved during the displacement.

[0036] The preform element can have a contact or working section in which the strand-shaped winding material comes into contact with the preform element to introduce the transverse force. In the region of the contact section, a guide device can be provided which is designed to guide the strand-shaped winding material along the preform element during winding onto the carrier body. The guide device can, for example, be formed with a guide groove and / or a guide notch in which the strand-shaped winding material is guided when it comes into contact with the preform element to be subjected to the transverse force. In this way, the feeding of the strand-shaped winding material to the surface of the carrier body is less dependent on the exit behavior of the strand-shaped winding material from the nozzle opening.

[0037] A clamping device can be arranged upstream of a feed inlet of the winding nozzle, through which the stranded winding material is fed to the winding nozzle, which is configured to clamp the stranded winding material as needed. The clamping device can prevent further advance of the stranded winding material out of the nozzle opening. If, for example, a tensile force arises in the area in front of the nozzle opening when the stranded winding material is separated, the clamping device counteracts this and prevents the stranded winding material from slipping further, for example, into and out of the winding nozzle.

[0038] During the winding process, it may be provided to set a relative position in the axial direction for the preform element and the winding nozzle, in which the preform element does not protrude beyond the front end of the winding nozzle. For example, the strand-shaped winding material can thus come into contact with the preform element at a frontmost (distal) end of the preform element, which avoids a possible collision, for example, when depositing a first turn near a winding base of the carrier body. This makes it possible to apply the transverse force to the strand-shaped winding material by means of the preform element even beginning with the application of the first turn to the carrier body.

[0039] The embodiments explained above in connection with the winding device can be provided accordingly as embodiments of the method for producing the winding of a strand-shaped winding material on the carrier body.

[0040] Further embodiments are explained below with reference to the figures of a drawing. Herein:

[0041] Fig. 1 is a schematic perspective view of an arrangement for a winding device with a winding nozzle, a preforming element, a displacement device, and an associated control device; Fig. 2 is a partially schematic side view of the arrangement with the winding nozzle and preforming element from Fig. 1;

[0042] Fig. 3 is a schematic perspective view of a further arrangement for a winding device with a winding nozzle and a preform element, wherein the winding nozzle is rotatable about its own longitudinal axis;

[0043] Fig. 4 is a schematic representation of a carrier body in cross section as well as a winding nozzle and a preform element during winding;

[0044] Fig. 5 is a schematic representation of a carrier body in cross section as well as a winding nozzle and a preform element during winding according to a further embodiment;

[0045] Fig. 6 is a schematic representation of a carrier body in cross section as well as a winding nozzle and a preform element during winding according to another embodiment;

[0046] Fig. 7 is a schematic representation of an arrangement for a winding device with winding nozzle and preform element with different relative positions in the axial direction;

[0047] Fig. 8 is a schematic representation of an arrangement for a winding device with a winding nozzle and preform element, wherein a guide device is formed on the preform element;

[0048] Fig. 9 is a schematic representation of a carrier body for a winding and associated winding nozzle in different relative positions during winding;

[0049] Fig. 10 is a schematic perspective view of a serial arrangement with several winding devices and

[0050] Fig. 11 is a schematic perspective view of another arrangement for a winding device.

[0051] 1 and 2 show schematic representations of an arrangement for a winding device with a winding nozzle 1, a preforming element 2 assigned to the winding nozzle 1, and a displacement system 3, which is configured to move the winding nozzle 1 and the preforming element 2 during the winding of a strand-shaped winding material 4, for example a wire material, onto a carrier body 5 (cf. Fig. 4). During the winding of the strand-shaped winding material 4, the winding nozzle 1 and the preforming element 2, on the one hand, and the carrier body 5, on the other hand, are moved relative to one another; for example, the winding nozzle 1 and the preforming element 2 are moved around the carrier body 5. In the example shown, the displacement system 3 is formed with a first displacement device 6, which is assigned to the winding nozzle 1 and is configured to displace the winding nozzle 1 at least in the axial direction of the winding nozzle 1, i.e., in the vertical direction of the illustration in Fig. 1.For this purpose, the first displacement device 6 in the example shown is designed with a spindle drive 6a.

[0052] A second displacement device 7 is assigned to the preform element 2 and is configured to pivot the preform element 2 around a nozzle opening 8 of the winding nozzle 1, for example by up to 360°, so that the relative position of the preform element at least to the winding nozzle 1 is thereby changed (cf. in particular further explanations of Figs. 4 to 6 below). In the exemplary embodiment shown, a gear mechanism 7a is provided as part of the second displacement device 7 for pivoting the preform element 2 around the nozzle opening 8 or the winding nozzle 1, which is functionally connected to an associated actuator 7b such that the drive movement provided by the actuator 7b can be converted into a rotational or pivoting movement of the preform element 2.

[0053] The strand-shaped winding material 4 exits the winding nozzle 1 via the nozzle opening 8, to which it is fed via an upstream feed device 1a.

[0054] A third displacement device 9 of the displacement system 3 is assigned to the winding nozzle 1 and the preform element 2 and is configured to move them together relative to the carrier body 5 during winding of the strand-like material onto the carrier body 5. At least one actuator for operating the respective movement can each be assigned to the first, second, and third displacement devices 6, 7, 9, wherein the actuator can be formed, for example, with a servomotor.

[0055] To control the movements, a control device 10 is assigned, which is configured to control the first, second, and / or third displacement device 6, 7, 9 during operation during winding of the strand-shaped winding material 4. For this purpose, the control device 10 can be configured with software to initiate the desired movement components or movements by providing appropriate control signals for different applications.

[0056] In the illustrated embodiment, the preform element 2 is rod- or pin-shaped and has a working or contact section 11, in which the strand-shaped winding material 4 comes into contact during winding by means of contact formation between the preform element 2 and the strand-shaped winding material 4. This makes it possible to exert a transverse force transverse to the longitudinal extent of the strand-shaped winding material 4 on the strand-shaped winding material 4 continuously or intermittently during winding of the strand-shaped winding material 4 onto the carrier body 5, such that the strand-shaped winding material 4 is subjected to an elastic to plastic pre-stress before being deposited on the carrier body 5.As a result, when the strand-shaped winding material 4 is deposited on the carrier body 5, in particular in non-rounded, flat surface areas of the carrier body 5, bulges are avoided which could hinder the contour-conforming deposit of the strand-shaped winding material 4 on the carrier body 5.

[0057] On the input side, the winding nozzle 1 is assigned an upstream clamping device 1b, which makes it possible to clamp the strand-shaped winding material 4 and thus prevent further feed of the strand-shaped winding material 4.

[0058] According to Fig. 2, the strand-shaped winding material 4 exits the nozzle opening of the winding nozzle 1 at an angle of approximately 90°. In the example shown, the axial or longitudinal directions of the winding nozzle 1 and the preform element 2 are essentially parallel to each other.

[0059] Fig. 3 shows a schematic perspective view of another arrangement for a winding device with the winding nozzle 1 and the preform element 2 as well as the first and second associated displacement devices 6, 7, wherein in the embodiment shown, the first displacement device 6 associated with the winding nozzle 1 is configured to displace the winding nozzle 1 not only along its axial direction, but also to rotate it about its own axial direction. In the embodiment shown, a groove 1d extending in the axial direction of the winding nozzle 1 is formed at an upper end 1c of the winding nozzle 1, which groove can be brought into engagement with a pin (not shown) arranged on the gear mechanism 7a in order to transmit a rotational movement to the winding nozzle 1 by means of the second associated displacement device 7.In addition, the displacement system 3 is configured, for example, by means of a transmission element with an associated ball bearing (not shown), which serves to transmit the drive movement of the spindle drive 6a for its axial displacement, in this case to decouple the winding nozzle 1 from the spindle drive 6a. Fig. 4 to 6 show schematic representations of the carrier body 5 in cross section, wherein the carrier body 5 has a rectangular cross-section in the examples shown. The strand-shaped winding material 4 emerging from the nozzle opening is deposited on the carrier body 5 in the form of several turns with the aid of the winding nozzle 1, wherein the winding nozzle 1 and the preform element 2 are moved together around the carrier body 5 and its surface 5a in opposite directions.In this case, the preform element 2 is displaced into different pivoting or rotational positions relative to the nozzle opening 8 of the winding nozzle 1 with the aid of the associated second displacement device 7, such that the preform element 2 is arranged in a first pivoting position 12 at a distance from the strand-shaped winding material 4, so that no transverse force is introduced onto the strand-shaped winding material 4 by the preform element 2. In a second pivoting position 13, the preform element 2 is in contact with the strand-shaped winding material 4 and applies the transverse force thereto, wherein an angle 14 is formed between sections of the strand-shaped winding material 4 on opposite sides of the preform element 2, which angle is greater the greater the exerted transverse force.

[0060] In the embodiment shown in Fig. 4, the transverse force is activated and applied cyclically (intermittently). While the transverse force is applied when depositing the strand-shaped winding material 4 on the longitudinal sides 15 of the carrier body 5, this force is absent when depositing the strand-shaped winding material 4 in the region of the end faces 16 of the carrier body 5 (so-called head travel). The displacement between the first and second pivot positions 12, 13 of the preform element 2 can be controlled with the aid of the control device 10 such that the displacement is adjusted depending on the relative position of the winding nozzle 1 with respect to the carrier body 5.

[0061] Arrows A in Figs. 4 to 6 schematically show the direction of movement of winding nozzle 1 and preform element 2 during winding on the long side 15 of the carrier body 5.

[0062] In the embodiment in Fig. 4, the strand-shaped winding material 4, when brought into contact with the preforming element 2 for force application, is subjected to a constant transverse force, which is why the angle 14 remains essentially constant. In another embodiment according to Fig. 5, the strand-shaped winding material 4 is subjected to different transverse forces by pivoting the preforming element 2 around the nozzle opening of the winding nozzle 1 when the arrangement with winding nozzle 1 and preforming element 2 is moved along the longitudinal side 15 of the carrier body 5, so that the angle 14 changes. Fig. 6 shows a further embodiment in which the winding nozzle 1 is additionally rotated about its own longitudinal axis when moving around the carrier body 5 for winding the strand-shaped winding material 4, wherein the rotation is adjusted depending on the position of the winding nozzle 1 relative to the carrier body 5.

[0063] Fig. 7 shows a schematic representation of the arrangement with winding nozzle 1 and preforming element 2 and associated displacement devices 6, 7 for different relative positions of preforming element 2 and winding nozzle 1 in the axial direction of the winding nozzle 1. In the representations a) to c), the strand-shaped winding material 4 is arranged in different areas of the working section 11 on the preforming element 2, which in the example shown is the result of an axial displacement of the winding nozzle 1, wherein the position of the preforming element 2 in the axial direction remains unchanged in this example. Such an operating mode can, for example, be provided in conjunction with a winding jump during the head travel. The strand-shaped winding material 4 can be subjected to the same transverse force despite the different positions along the working section 11.

[0064] Illustration c) in Fig. 7 shows a relative position of the preform element 2 to the winding nozzle 1, which can prevent a possible collision during the winding process. This is possible during winding, for example, when the preform element 2 protrudes beyond the front end of the winding nozzle 1 in the axial direction of the winding nozzle 1. The relative position shown, in which the strand-like winding material 4 comes to rest on the preform element 2 in the region of the working section 11 at a foremost (distal) end 2a of the preform element 2, avoids a collision, for example when a first turn is laid down close to a winding base of the carrier body 5. This makes it possible to apply the transverse force to the strand-like winding material 4 by means of the preform element 2 even beginning with the application of the first turn.

[0065] When producing the first turn on the carrier body 5, the axial position between the preform element 2 and the winding nozzle 1 can, for example, be adjusted such that the transverse contraction can be exerted on the strand-shaped winding material 4 without the preform element 2 colliding with the carrier body 5. In particular, the preform element 2 can be arranged relative to the winding nozzle 1 such that it does not protrude beyond the strand-shaped winding material 4, as shown in the exemplary illustration c) in Fig. 7. There, the strand-shaped winding material 4 emerges from the winding nozzle 1 at an angle of approximately 90°.

[0066] Illustration d) in Fig. 7 shows how the preform element 2 is arranged at a distance from the strand-shaped winding material 4. This position shown is advantageous, for example, for the initial application of the strand-shaped winding material 4 before the actual winding process, in which the strand-shaped winding material 4 is deposited on the carrier body 5, and for depositing the strand-shaped winding material 4 after the actual winding process in a wire clamp belonging to the carrier body 5 (not shown). The arrangement shown in illustration d) in Fig. 7 is also referred to as "clearing the winding nozzle."

[0067] Fig. 8 shows a schematic representation of the arrangement of the winding nozzle and preform element 2 as well as the associated displacement devices 6, 7. In this example, the strand-shaped winding material 4 is guided in the region of the working section 11 of the preform element 2 in a guide device 17, which is formed, for example, with a groove or a notch. The representations a) to c) in Fig. 8 show the exit behavior of the strand-shaped winding material 4 from the nozzle opening 8 of the winding nozzle 1 under different tensile loads on the strand-shaped winding material 4. With the aid of the guide device 17, the strand-shaped winding material 4 can be fed to the carrier body 5 in a constant manner during winding.

[0068] Fig. 9 shows a schematic representation of the winding of the strand-like winding material 4 onto a carrier body 5, which has a plurality of partial carrier bodies 5.1 5.6, each of which is provided with a winding. The representations a) to e) in Fig. 9 show different relative positions of the winding nozzle 1 to the carrier body 5, such that the winding nozzle 1, starting from the position in representation a) to representation c), is displaced closer to the carrier body 5 and along its axial direction, so that a distance AB becomes smaller. After that, the distance AB becomes larger again until, according to representation e), the starting position according to representation a) is resumed.

[0069] Fig. 10 shows a schematic perspective view of a series arrangement of winding devices 20.1,..., 20.8, each configured according to one of the previously explained embodiments. Fig. 11 shows a schematic perspective view of another arrangement for a winding device. For the joint axial displacement of the winding nozzle 1 and the preform element 2, the displacement system 3 in this embodiment has a further displacement device 30, which can be formed, for example, with a servomotor as the drive device.

[0070] The features disclosed in the above description, the claims and the drawings may be important for the realization of the various embodiments both individually and in any combination.

Claims

Claims 1. Winding device for producing a winding of a strand-shaped winding material (4) on a carrier body (5), with - a winding nozzle (1) which is designed to feed a strand-shaped winding material (4) for winding onto a non-circular carrier body (5), and in which the strand-shaped winding material (4) exits via a nozzle opening (8) for feeding; - a preforming element (2) which is assigned to the winding nozzle (1) and is designed to subject the strand-shaped winding material (4) emerging from the nozzle opening (8) to an elastic to plastic pre-stress before the strand-shaped winding material (4) is applied to the carrier body (5) and to exert a transverse force on the strand-shaped winding material (4) transversely to the longitudinal extent of the strand-shaped winding material (4); and - a displacement system (3) which is configured to move the winding nozzle (1) and the preform element (2) together relative to the carrier body (5) for winding the strand-shaped winding material (4); wherein the displacement system (3) is further configured to pivot the preform element (2) about the nozzle opening (8) and, in doing so, to change the relative position of the preform element (2) to the winding nozzle (1).

2. Winding device according to claim 1, characterized in that the preform element (2) can be pivoted around the nozzle opening (8) in an angular range of up to 360 degrees.

3. Winding device according to claim 1 or 2, characterized in that the displacement system (3) is further configured to change a pivoting position of the preform element (2) and thereby the relative position of the preform element (2) to the winding nozzle (1) during the winding of the strand-shaped winding material (4) onto the carrier body (5).

4. Winding device according to at least one of the preceding claims, characterized in that the displacement system (3) is further configured, during the winding of the strand-shaped winding material (4) - when applying the strand-shaped winding material (4) in a first region of the carrier body, the preform element (2) is in a first pivot position relative to to arrange a winding nozzle (1) in which the preform element (2) applies a first transverse force to the strand-shaped winding material (4), and - when applying the strand-shaped winding material (4) in a second region of the carrier body (5), which is different from the first region, to displace the preform element (2) by pivoting about the nozzle opening (8) into a second pivot position relative to the winding nozzle (1), which is different from the first pivot position, wherein the preform element (2) applies a second transverse force, which is different from the first transverse force, or no transverse force to the strand-shaped winding material (4) in the second pivot position.

5. Winding device according to claim 4, characterized in that the displacement system (3) is further configured to carry out the displacement of the preform element (2) between the first and the second pivot position as a continuous pivoting movement of the preform element (2), such that the transverse force changes continuously.

6. Winding device according to claim 4 or 5, characterized in that the transverse force on the strand-shaped winding material (4) can be activated cyclically by means of the displacement system (3).

7. Winding device according to at least one of claims 1 to 3, characterized in that the displacement system (3) is further configured to maintain the transverse force on the strand-shaped winding material (4) during the winding of the strand-shaped winding material (4) onto the carrier body (5) with a substantially constant transverse force.

8. Winding device according to at least one of the preceding claims, characterized in that the displacement system (3) is further configured to displace the preform element (2) parallel to the axial direction of the winding nozzle (1).

9. Winding device according to at least one of the preceding claims, characterized in that the displacement system (3) is further configured to subject the winding nozzle (1) to at least one of the following movements: - Rotating the winding nozzle (1) around its own longitudinal axis and - Displacement of the winding nozzle (1) in the axial direction of the winding nozzle (1).

10. Winding device according to claim 8 or 9, characterized in that the displacement system (3) is further arranged, during the winding of the strand-shaped winding material (4) - when applying the strand-shaped winding material (4) in a first region of the carrier body (5) for the winding nozzle (1), to form a first axial position relative to the preform element (2), in which the strand-shaped winding material (4) comes to bear against the preform element (2) in order to introduce the transverse force in a first element section of the preform element (2), and - when applying the strand-shaped winding material (4) in a second region of the carrier body (5), which is different from the first region, to form a second axial position for the winding nozzle (1) relative to the preform element (2) by means of axial displacement of the winding nozzle (1) and / or the preform element (2), which second axial position is different from the first axial position, wherein the strand-shaped winding material (4) in the second axial position comes to bear against the preform element (2) in a second element section of the preform element (2), which second element section is different from the first element section, in order to introduce the transverse force.

11. Winding device according to at least one of the preceding claims, characterized in that the displacement system (3) is further configured to rotate the preform element (2) together with the winding nozzle (1) about a longitudinal axis of the winding nozzle (1).

12. Winding device according to at least one of the preceding claims, characterized in that a coupling device is provided with which the winding nozzle (1) and the preforming element (2) can be coupled for a joint displacement of the winding nozzle (1) and preforming element (2) by means of the displacement system (3) or can be decoupled for a separate displacement of the winding nozzle (1) and / or preforming element (2) by means of the displacement system (3).

13. Winding device according to at least one of the preceding claims, characterized in that the preform element (2) has a guide device (16) in a contact section (11) in which the strand-shaped winding material (4) comes to rest on the preform element (2) for introducing the transverse force, which guide device is arranged is designed to guide the strand-shaped winding material (4) on the preform element (2) during winding onto the carrier body (5).

14. Winding device according to at least one of the preceding claims, characterized in that a feed inlet of the winding nozzle (1), via which the strand-shaped winding material (4) is fed to the winding nozzle (1), is preceded by a clamping device (1b) which is designed to clamp the strand-shaped winding material (4).

15. A method for producing a winding of a strand-shaped winding material (4) on a carrier body, the method comprising the following: - winding a strand-shaped winding material (4) onto a non-circular carrier body (5) by means of a winding nozzle (1), from which the strand-shaped winding material (4) exits via a nozzle opening (8); - Applying pressure to the strand-shaped winding material emerging from the nozzle opening (8) (4) before applying the strand-shaped winding material (4) to the carrier body (5) with an elastic to plastic pre-stressing by means of a preforming element (2) which is assigned to the winding nozzle (1), wherein a transverse force is exerted on the strand-shaped winding material (4) transversely to the longitudinal extent of the strand-shaped winding material (4); and - joint movement of the winding nozzle (1) and the preform element (2) relative to the carrier body (5) for winding the strand-shaped winding material (4) onto the carrier body (5) by means of a displacement system (3); wherein the preform element (2) is pivoted about the nozzle opening (8) by means of the displacement system (3) to change the relative position of the preform element (2) to the winding nozzle (1).

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