EP3855462B1 - Device and method for coiling ring cores without cartridges - Google Patents

Description

The invention relates to a device and a method for the magazine-free winding of toroidal cores that can be guided in a toroidal core holder with a wire comprising several wire sections.

A toroidal core coil winding device with a toroidal core holder and an annular magazine guided through the toroidal core opening with elements used for wire guidance and wire magazine storage is, for example, from DE 101 53 896 A1 known. The disadvantage of this known device is that the ring-shaped magazine has to be guided through the ring core for magazine storage and winding and thus ring cores with a small diameter or tube cores through which the magazine cannot be guided due to the spatial requirements of the magazine cannot or cannot be completely wound when winding with thicker wires.

Another toroidal core winding device with a toroidal core holder and a magazine-free wire guide is, for example, from the EP 2 953 149 B1 known. The disadvantage of this known device is that the winding quality can be reduced due to the wire being temporarily uncontrolled during operation and the accuracy of the wire layers on the toroidal core without crossings cannot always be guaranteed.

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The present invention is therefore based on the object of creating a device for the magazine-free winding of toroidal cores and a corresponding winding method, which enable automated and magazine-free winding of toroidal cores with, in particular, a comparatively small toroidal core diameter and of tube cores with a very small diameter. In addition, the device should be simple and robust and can be produced inexpensively. Magazineless winding is understood to mean that an annular magazine does not have to be guided through the toroidal core opening, as in the prior art.
document US 2003/038204 A1 discloses an automatic toroidal winding device for winding toroidal coils by winding wire in a spiral onto a toroidal core.
document DE 101 50 818 A1 discloses a winding or bandaging device for addition to a toroidal core coil winding device, which has an annular magazine designed for wire or tape guidance and magazine storage.

The document US4 884 758 A discloses a device with a toroidal core holder for winding toroidal cores that can be guided in the toroidal core holder with a wire comprising several wire sections.

To solve this problem, the invention provides a device with a toroidal core holder for winding toroidal cores that can be guided in the toroidal core holder with a wire comprising several wire sections, the toroidal core holder driving a toroidal core to be wound and the wire preferably being aligned perpendicular to one another. The device further comprises a substantially circular needle ring arranged in a winding plane essentially parallel to the wire, which is rotatably mounted and can be positioned relative to the toroidal core holder in such a way that the needle ring passes through and around a wire section located in the winding plane during operation in the Toroidal core holder winds guided toroidal core. The needle ring further comprises a deflection roller which is rotatably mounted on the needle ring in a first recess in the winding plane and is designed to wind the wire section located in the winding plane through and around the toroidal core during operation; and a baffle, which is arranged in a second recess in the winding plane adjacent to the first recess on the needle ring and is designed to guide the wire to be wound during operation via a guide groove between the winding plane and a magazine level arranged essentially parallel to the winding plane. The device further comprises a plurality of magazining elements arranged in the magazining level, which are mounted in a stationary and rotatable manner and are designed to magazining wire sections located in the magazining level.

To solve the problem, a method for winding a toroidal core that can be guided in a toroidal core holder with a wire comprising several wire sections without a magazine is also proposed. The method includes the rotation of a needle ring comprising a baffle and a deflection roller through the ring core and also the following steps: guiding a wire section located in a magazine level of the wire magazined on several magazine elements from magazine elements arranged in the magazine level via a guide groove of the baffle onto the deflection roller, which is arranged in a winding plane arranged essentially parallel to the magazining plane; Guiding the wire section located in the winding plane around the deflection roller towards the toroidal core; Winding the toroidal core with the wire section located in the winding plane; and return an unwound wire section located in the winding plane via the deflection roller through the guide groove onto the several magazining elements in the magazining plane.

According to the invention, the magazining takes place via the magazining elements arranged in the magazining plane, in that the wire sections located in the magazining plane are magazined onto the magazining elements. Since a predetermined length of wire from a wire supply is simultaneously wound through and around the toroidal core and stored on the magazine elements, the cycle time for winding is reduced comparatively. Because of the use of the magazine elements, which are not guided through the ring core during magazine storage and winding, and the associated lack of a conventional magazine for wire storage, at the end of winding only a wire section located in the winding plane is guided through the ring core, so that Ring cores with a very small remaining hole diameter (inner diameter of the wound ring core with wound wire layers at the end of winding) can also be wound. Furthermore, toroidal cores with small inner diameters or thicker wires can be wound than is possible with conventional toroidal core winding machines.

In comparison to a conventional toroidal core (coil) winding device with an annular magazine guided through the toroidal core opening, the device according to the invention is of simple construction since the annular magazine can be dispensed with. Due to the relatively simple structure, the device is also robust and inexpensive to manufacture. The method according to the invention thus allows automated and magazine-free winding of toroidal cores with a small inner diameter or tube cores or other core geometries that cannot be wound with conventional toroidal core (coil) winding devices with a magazine.

In comparison to conventional toroidal core winding devices with several wire sections stored in the winding plane, the invention is simple in structure, as it is based on transport rollers, a wire ejector and a wire tensioner can be dispensed with. Due to the relatively simple structure, the device is also robust and inexpensive to manufacture. The method according to the invention thus allows automated and magazine-free winding of toroidal cores with a small inner diameter or tubular cores or other core geometries that cannot be wound with conventional toroidal core winding devices with several wire sections magazined in the winding plane.

According to one aspect, an interruption interrupts the substantially circular shape of the needle ring in an area so that the ring core can be positioned in the circumference of the needle ring or the needle ring in a position intended for winding the ring core, in which the needle ring is arranged so that it can be rotated by the toroidal core. After winding has ended, the needle ring can leave this position again and the toroidal core can be removed from the toroidal core holder. This enables simplified winding, simple automation of the process and a reduction in the process time for winding the toroidal core.

According to a further aspect, the needle ring comprises a toothed ring which is arranged in a drive plane which is arranged essentially parallel to the winding plane and is designed to drive the needle ring in rotation. The ring gear has teeth through which it is rotationally driven by an external drive unit. The rotational movement of the gear ring is transferred to the needle ring so that the toroidal core can be wound. This increases process control and simplifies the handling of the device.

According to a further aspect, the needle ring is designed to simultaneously wind the wire section located in the winding plane during operation through and around the toroidal core guided in the toroidal core holder and to magazine the wire section located in the magazining plane onto the plurality of magazining elements. The wire is initially introduced into the device from a wire supply until a predetermined length of wire is supplied. The predetermined length of wire from the wire supply is simultaneously wound through and around the toroidal core and magazined onto the magazine elements located in the magazine level. If the predetermined length of wire is supplied from the wire supply, the wire is separated from the wire supply so that no further wire is supplied from the wire supply and the wire sections located in the winding plane are wound through and around the toroidal core. This allows the amount of residual wire that cannot be wound on the toroid to be minimized and allows for easy automation of the process.

According to a further aspect, the deflection roller is set up to centrally wind the wire section located in the winding plane through and around the toroidal core. As a result, the quality of the wound toroidal cores can be increased by winding the wire turns perpendicularly onto toroidal cores with a substantially circular geometry via the winding process. In addition, this aspect offers more space within the toroidal core during winding. This enables a lateral relative movement between the toroidal core and the needle ring, for example to bring toroidal cores with non-circular geometry into a central position relative to the needle ring.

According to a further aspect, the device further comprises at least one wire brake, wherein the at least one wire brake is designed to brake the wire section located in the magazine level at intervals by pressing it against at least one of the plurality of magazine elements and to tighten the wire during operation. This allows the tensile load on the wire to be regulated and the load on the wire to be kept constant, thus reducing the risk of the wire breaking off and winding the wire too loosely onto the toroidal core.

According to a further aspect, the plurality of magazine elements are designed as rollers which are rotationally driven at intervals in an interaction with the at least one wire brake. In a preferred embodiment, the magazine elements are mounted on a side facing away from the needle ring and closed off by surrounding areas. Furthermore, in a preferred embodiment, means are provided on a side of the magazine elements facing the needle ring to prevent the elements located in the magazine level from accidentally falling down To avoid wire sections from the magazine elements during winding. These means are preferably a circumferential bevel. In an area of the orbit of the needle ring, which the deflection roller with the wire section located in the winding plane has passed within one revolution, the wire section located in the magazine level is driven via the rollers in the direction of rotation of the needle ring and is not braked via the at least one wire brake. In an area of the orbit of the needle ring that the deflection roller with the wire section located in the winding plane has not yet passed within one rotation, the wire section located in the magazine level is not driven via the rollers in the direction of rotation of the needle ring and is braked via the at least one wire brake. This allows the load on the wire to be kept constant and the risk of breakage is reduced. This also prevents the wire from moving loosely in the system during winding, which can increase the quality of the winding.

• Fig. 1 eine rudimentäre schematische Seitenansicht einer Ausführungsform der Vorrichtung zum magazinlosen Bewickeln von Ringkernen, bei der u.a. die Ringkernhalterung und der Drahtvorrat zur Vereinfachung nicht gezeigt sind;
• Fig. 2 eine rudimentäre schematische Vorderansicht eines Ausschnitts einer Ausführungsform der Vorrichtung zum magazinlosen Bewickeln von Ringkernen, bei der u.a. die Ringkernhalterung und der Drahtvorrat zur Vereinfachung nicht gezeigt sind;
• Fig. 3 eine rudimentäre schematische Seitenansicht einer Ausführungsform der Vorrichtung zum magazinlosen Bewickeln von Ringkernen, bei der u.a. die Ringkernhalterung und der Drahtvorrat zur Vereinfachung nicht gezeigt sind;
• Fig. 4 eine rudimentäre schematische Seitenansicht einer Ausführungsform der Vorrichtung zum magazinlosen Bewickeln von Ringkernen, bei der u.a. die Ringkernhalterung und der Drahtvorrat zur Vereinfachung nicht gezeigt sind;
• Fig. 5 eine rudimentäre schematische Seitenansicht einer Ausführungsform der Vorrichtung zum magazinlosen Bewickeln von Ringkernen, bei der u.a. die Ringkernhalterung und der Drahtvorrat zur Vereinfachung nicht gezeigt sind;
• Fig. 6 ein Ablaufdiagramm eines Verfahrens zum magazinlosen Bewickeln von Ringkernen gemäß einer Ausführungsform der vorliegenden Erfindung.

Embodiments of the invention are explained in more detail below with reference to the attached figures. Show it:

• Fig. 1 a rudimentary schematic side view of an embodiment of the device for magazine-free winding of toroidal cores, in which, among other things, the toroidal core holder and the wire supply are not shown for simplicity;
• Fig. 2 a rudimentary schematic front view of a section of an embodiment of the device for magazine-free winding of toroidal cores, in which, among other things, the toroidal core holder and the wire supply are not shown for simplicity;
• Fig. 3 a rudimentary schematic side view of an embodiment of the device for magazine-free winding of toroidal cores, in which, among other things, the toroidal core holder and the wire supply are not shown for simplicity;
• Fig. 4 a rudimentary schematic side view of an embodiment of the device for magazine-free winding of toroidal cores, in which, among other things, the toroidal core holder and the wire supply are not shown for simplicity;
• Fig. 5 a rudimentary schematic side view of an embodiment of the device for magazine-free winding of toroidal cores, in which, among other things, the toroidal core holder and the wire supply are not shown for simplicity;
• Fig. 6 a flowchart of a method for magazine-free winding of toroidal cores according to an embodiment of the present invention.

The device 1000 for magazine-free winding of toroidal cores 2000 according to Fig. 1 to 3 preferably has a toroidal core holder (not shown) in which the toroidal core 2000 to be wound is held and rotated during winding. According to one embodiment, the toroidal core holder is formed by three pressure rollers (not shown), which are preferably each arranged at an angle of 120° to one another around the toroidal core 2000 and press against the toroidal core 2000 from the outside and thus hold it in the desired position. At least one of the pressure rollers simultaneously drives the toroidal core 2000 and thus sets it in the desired rotation in order to wind the turns around the toroidal core 2000 at a desired distance.

Instead of a magazine, the device 1000 for magazine-free winding of toroidal cores 2000 has several magazine elements 1210, 1220, 1230, 1240 arranged in the magazine level 4200, which are mounted in a stationary and rotatable manner and are set up to magazine wire sections 3200 located in the magazine level 4200. The axis of rotation of the toroidal core 2000 preferably lies essentially in the winding plane 4100, and the axes of rotation of the toroidal core 2000 and the magazine elements 1210, 1220, 1230, 1240 are preferably arranged essentially perpendicular to one another.

According to the in the Fig. 1 to 3 In the embodiment shown, the magazine elements 1210, 1220, 1230, 1240 are arranged evenly distributed along the orbit of the needle ring 1100. The Indian Wire section 3200 located on the magazine level 4200 is magazined onto the magazine elements 1210, 1220, 1230, 1240 and is removed from it as needed during winding. The number of magazine elements 1210, 1220, 1230, 1240 is not limited, but embodiments with at least four magazine elements 1210, 1220, 1230, 1240 are preferred.

For further winding, the toroidal core 2000 is wound by the needle ring 1100 with the deflection roller 1111 with the wire section 3100 located in the winding plane 4100. Due to the rotation of the needle ring 1100 and the deflection roller 1111, a wire section 3200 located in the magazine level 4200 of the wire 3000 magazined onto the several magazine elements 1210, 1220, 1230, 1240 is removed from the magazine elements 1210, 1220, 1230, 1240 via the guide groove 1121 of the ski kane 1122 guided onto the deflection roller 1111. The wire section 3100 located in the winding level 4100 is then guided around the deflection roller 1111 to the toroidal core 2000 and wound around the toroidal core 2000. After winding the toroidal core 2000 with the wire section 3100 located in the winding level 4100, the unwound wire section 3100 located in the winding level 4100 is returned via the deflection roller 1111 through the guide groove 1121 to the several magazine elements 1210, 1220, 1230, 1240 in the magazine level 4200 . As the wire 3000 is progressively wound onto the toroidal core 2000, the amount of wire 3000 is reduced, i.e. the wire sections 3100 located in the winding level 4100 and the wire sections 3200 located in the magazine level 4200, which are guided through the toroidal core 2000. Therefore, in particular, toroidal cores 2000 can also be wound, the remaining hole diameters of which (inner diameter of the wound toroidal core 2000 with wound wire layers as the winding progresses) become small as the winding progresses.

The not yet wound wire section 3200 located in the magazine level 4200 is braked at intervals by the at least one wire brake 1510, 1520, 1530, 1540 by pressing it against at least one of the several magazine elements 1210, 1220, 1230, 1240 and thus tightened during operation. The multiple magazine elements 1210, 1220, 1230, 1240 are according to one Embodiment designed as rollers, which are rotationally driven at intervals in interaction with the at least one wire brake 1510, 1520, 1530, 1540. In a preferred embodiment, the magazine elements 1210, 1220, 1230, 1240 are mounted on a side facing away from the needle ring 1100 and are closed off by surrounding areas. Furthermore, in a preferred embodiment, means are provided on a side of the magazine elements 1210, 1220, 1230, 1240 facing the needle ring 1100 to prevent the wire sections 3200 located in the magazine level 4200 from accidentally falling from the magazine elements 1210, 1220, 1230, 1240 during winding to avoid. Preferably the means are as in Fig. 2 shown circumferential chamfer 1211, 1221, 1231, 1241. As in Fig. 3 shown, in an area of the orbit of the needle ring 1100, which the deflection roller 1111 with the wire section 3100 located in the winding plane 4100 has passed within one revolution, the wire section 3200 located in the magazine level 4200 is driven via the rollers in the direction of rotation of the needle ring 1100 and not braked via the at least one wire brake 1510, 1520, 1530, 1540. In an area of the orbit of the needle ring 1100, which the deflection roller 1111 with the wire section 3100 located in the winding plane 4100 has not yet passed within one rotation, the wire section 3200 located in the magazine level 4200 is not driven via the rollers in the direction of rotation of the needle ring 1100 and braked via the at least one wire brake 1510, 1520, 1530, 1540. This allows the load on the wire 3000 to be kept constant and the risk of it breaking off can be reduced. Furthermore, this prevents the wire 3000 from moving loosely in the system during winding, which can increase the quality of the winding.

According to one embodiment, the method 6000 for magazine-free winding of toroidal cores 2000 can be as follows with reference to Fig. 4 to 6 to be discribed. The toroidal core 2000 is held in the toroidal core holder and rotates during winding. First, a wire end 3300 from the wire supply is guided around the deflection roller 1111 and past the toroidal core 2000, as in Fig. 4 and 5 shown. The wire end 3300 guided past the toroidal core 2000 is fixed (shown as a cross) and the needle ring 1100 wraps a first turn around the toroidal core 2000. The first turns now fix the wire 3000 during further winding and the needle ring 1100 can wind further turns without external fixation. Subsequently, a predetermined length of wire 3000 is introduced from the wire supply into device 1000. The predetermined length of wire 3000 from the wire supply is as in Figure 5 shown, thus simultaneously wound through and around the toroidal core 2000 and magazined onto the magazine elements 1210, 1220, 1230, 1240. The wire 3000 is completely inserted into the device 1000 when the predetermined length of the wire 3000 is magazined onto the magazine elements 1210, 1220, 1230, 1240 located in the magazine level 4200. When the predetermined length of the wire 3000 is supplied from the wire supply and magazined onto the magazine elements 1210, 1220, 1230, 1240, the wire 3000 is separated from the wire supply and therefore no further wire 3000 is supplied from the wire supply and the one located in the winding level 4100 Wire section 3100 is further wound through and around toroidal core 2000, as in Fig. 3 shown. This allows the amount of residual wire that cannot be wound on the toroidal core 2000 to be minimized, thereby enabling automated and magazine-free winding of toroidal cores 2000.

Fig. 6 shows a flowchart 6000 of a method for magazine-free winding of toroidal cores according to an embodiment of the present invention. According to step 6100, the wire section 3200 of the wire from the magazine elements 1210, 1220, 1220, 1220, 1220, 1220, 1220, 1220, 1220, 1220, 1220, 1220, 1220, 1220, 120, 120, 120, 120, 120, 120, 120, 120, 120, 120, 120, 120, 120, 120, 120, 120, 120, 120, 120, 120, 120, 120, 1240 of the chicane in the Magazine level. 1122 guided onto the deflection roller 1111. The deflection roller 1111 is preferably arranged in the winding plane 4100, which is arranged essentially parallel to the magazine level 4200. According to a further step 6200, the wire section 3100 located in the winding plane 4100 is guided around the deflection roller 1111 towards the toroidal core 2000. According to a further step 6300, the toroidal core 2000 is wound with the wire section 3100 located in the winding plane 4100. The toroidal core 2000 is held by the toroidal core holder and rotates during the winding process. According to a further step 6400, an unwound wire section 3100 located in the winding level 4100 is moved over the Deflection roller 1111 is returned through the guide groove 1121 to the several magazine elements 1210, 1220, 1230, 1240 in the magazine level 4200.

For the purposes of the invention, the term toroidal core also includes tubular cores or cores with a special opening geometry and refers in particular to toroidal cores with a small inner diameter or cores with an angled opening geometry as well as tubular cores which, according to their dimensions, cannot be wound with a conventional toroidal core winding device because the magazine is due to of the space required for the magazine cannot be guided through the toroidal core opening. However, the embodiments described here are also suitable for winding other toroidal cores or cores with different openings and also those with larger inner diameters and allow simple and convenient winding.

In the sense of the invention, the term wire also includes all other materials with which toroidal cores or similar objects can be wound according to the invention.

Further advantageous refinements and modifications arise for the person skilled in the art from the exemplary embodiments described here and are understood by him to be part of the invention.

Claims (13)

1. Device (1000) with a toroidal core retaining element for winding toroidal cores (2000), which can be guided in the toroidal core retaining device, with a wire (3000) comprising a multiplicity of wire sections (3100, 3200), and further comprising:

   a substantially circular needle roller (1100), arranged in a winding plane (4100) substantially parallel to the wire (3000) and mounted such as to be rotatably movable and which can be positioned relative to the toroidal core retaining element in such a way that the needle roller (1100) winds a wire section (3100) located in the winding plane (4100) through and about a toroidal core (2000) guided in the toroidal core retaining element when in operation, wherein the needle roller (1100) further comprises:

   a deflecting roller (1111), which is rotationally mounted in a first recess in the winding plane (4100) at the needle roller (1100), and is designed such as to wind the wire section (3100) located in the winding plane (4100) through and about the toroidal core (2000) when in operation; characterized in that the needle roller (1100) further comprises

   a baffle plate (1122), which is arranged in a second recess in the winding plane (4100), adjacent to the first recess at the needle roller (1100), and which is designed to guide the wire (3000) which is to be wound, during operation, via a guide groove (1121) between the winding plane (4100) and a storing plane (4200) arranged substantially parallel to the winding plane (4100),

   and the device (1000) further comprises:
   a multiplicity of storing elements (1210, 1220, 1230, 1240) arranged in the storing plane (4200), which are mounted in a stationary and rotatable manner, and are designed to store the wire sections (3200) located in the storing plane (4200).
2. Device (1000) for winding toroidal cores (2000) according to claim 1, wherein an interruption interrupts the substantially circular form of the needle roller (1100) in one region, such that the needle roller (1100) can be positioned in a position provided for the winding of the toroidal core (2000), and wherein the needle roller (1100) is arranged in such a way that it can be rotated through the toroidal core (2000).
3. Device (1000) for winding toroidal cores (2000) according to any one of the preceding claims, wherein the needle roller (1100) comprises a toothed rim, which is arranged in a drive plane arranged substantially parallel to the winding plane (4100), and is designed to drive the needle roller (1100) rotationally.
4. Device (1000) for winding toroidal cores (2000) according to any one of the preceding claims, wherein the needle roller (1100) is designed such as to wind the wire section (3100) located in the winding plane (4100), when in operation, simultaneously through and about the toroidal core (2000) which is being guided in the toroidal core retaining element and to store the wire section (3200) located in the storing plane (4200) onto the multiplicity of storing elements (1210, 1220, 1230, 1240).
5. Device (1000) for winding toroidal cores (2000) according to any one of the preceding claims, wherein the deflecting roller (1111) is designed such as to wind the wire section (3100) located in the winding plane (4100) centrally through and about the toroidal core (2000).
6. Device (1000) for winding toroidal cores (2000) according to any one of the preceding claims, further comprising at least one wire brake (1510, 1520, 1530, 1540), wherein the at least one wire brake (1510, 1520, 1530, 1540) is designed such as to brake the wire section (3200) located in the storing plane (4200) by pressing at intervals on at least one of the multiplicity of storing elements (1210, 1220, 1230, 1240), and to keep the wire (3000) taut when in operation.
7. Device (1000) for winding toroidal cores (2000) according to claim 6, wherein the multiplicity of storing elements (1210, 1220, 1230, 1240) are rollers, which are driven in rotation at intervals in reciprocal effect with the at least one wire brake (1510, 1520, 1530, 1540).
8. Method for winding a toroidal core (2000), which can be guided in a toroidal core retaining element, with a wire (3000) comprising a multiplicity of wire section (3100, 3200), wherein the method comprises the rotation of a needle roller (1100), comprising a baffle plate (1122) and a deflecting roller (1111), through the toroidal core (2000), and comprises the following steps:

   a. Guiding a wire section (3200), located in a storing plane (4200), of the wire (3000) stored on a multiplicity of storing elements (1210, 1220, 1230, 1240) from storing elements (1210, 1220, 1230, 1240) arranged in the storing plane (4200), via a guide groove (1121) of the baffle plate (1122), and onto the deflecting roller (1111), which is arranged in a winding plane (4100) arranged substantially parallel to the storing plane (4200),

   b. Guiding the wire section (3100) located in the winding plane (4100) about the deflecting roller (1111) as far as the toroidal core (2000);

   c. Winding the toroidal core (2000) with the wire section (3100) located in the winding plane (4100); and

   d. Guiding back a wire section (3100) located in the winding plane (4100) which has not been wound, via the deflecting roller (1111), through the guide groove (1121), and onto the multiplicity of storage elements (1210, 1220, 1230, 1240) in the storing plane (4200).
9. Method for winding a toroidal core (2000) according to claim 8, wherein the toroidal core (2000) guided in the toroidal core retaining element rotates when in operation perpendicular to the rotation of the needle roller (1100).
10. Method for winding a toroidal core (2000) according to any one of claims 8 or 9, wherein the wire (3000) on the storing elements (1210, 1220, 1230, 1240) is tautened at intervals by at least one wire brake (1510, 1520, 1530, 1540).
11. Method for winding a toroidal core (2000) according to any one of claims 8 to 10, wherein the method is carried out by making use of the device (1000) for winding of toroidal cores (2000) according to any one of claims 1 to 7.
12. Method for winding a toroidal core (2000) according to any one of claims 8 to 11, wherein, at the beginning of the method, the wire section (3100) located in the winding plane (4100) is wound simultaneously through and about the toroidal core (2000), and the quantity of wire required is stored on the multiplicity of storing elements (1210, 1220, 1230, 1240) in the storing plane (4200).
13. Method for winding a toroidal core (2000) according to any one of claims 8 to 12, wherein the steps a. to d. are run through repeatedly, in order to wind the desired number of windings of the wire (3000) onto the toroidal core (2000).

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