DE102005062485A1 - Device and method for winding a closed ring core - Google Patents

Abstract

The invention relates to a device for winding a particular closed ring core with winding material, wherein the device has at least one magazine winding carrier for pre-winding and then wrapping the winding material on a toroidal core, and proposes the use of advantageous development that the magazine winding carrier (4) in its cross section, the a Ringkernpositionierebene the device (1) intersects, for receiving a ring profile cross-section of an in the device (1) wound toroidal core (2) surrounds a cavity (6) and in the circumferential direction is partially open or can be opened. The invention also relates to a method for winding a particularly closed toroidal core (2) with winding material (3), wherein the winding material (3) is pre-wound into a magazine winding (36) and wound around the toroidal core (2) by the magazine winding (36). and proposes for advantageous development that the pre-winding into a magazine roll (36) takes place in such a way that the magazine roll (36) forms an inner hollow cross-section (6 ') which is larger in comparison to the ring core profile cross-section and encloses therein a ring core section. The invention further relates to the device according to the invention and producible by the process according to the invention toroidal core chokes and toroidal transformers.

Description

The Invention relates first a device for winding a closed ring core with Winding material, such as metallic wire or tape, in particular for the production of chokes or transformers for the kilowatt to megawatt range, the device at least one magazine winding carrier for Vorwickeln and subsequent Wrapping the winding material has a ring core.

One With such a device in particular producible toroidal transformer for high performance is suitable for example the distribution of electrical energy and points opposite there currently in use so-called oil and dry transformers in thigh construction technical and economic advantages. However, in the known ring transformers for correspondingly high Achievements in manufacturing the difficulty of winding with sufficient for this huge Wire or strip cross sections according to the correspondingly high rigidity of the conductor material applied to the prefabricated toroidal cores. A device of the type mentioned for winding of closed Ring cores for High power transformers and chokes are well known in the art WO 95/12887 known. Therein it is suggested that the winding material on a through this through the toroidal opening through the winding roll, d. H. on a magazine winding carrier, pre-wound and then around the toroidal core and through its inner opening is passed through wherein the winding material is wrapped around the toroidal core. A restriction lies in the fact that the size of the winding roll with the length stock on it directed to the winding material after the clear inner cross section of the toroidal core. The publication suggests therefore for the production of chokes or transformers for high performance with correspondingly large Conductor cross sections before that with the limited length stock first up a Ringkernab section spiral a first winding segment is applied. Subsequently, will for applying another winding segment to another Ring core portion of the toroidal core and the winding device to each other twisted and then wrapping the toroidal core with another Wickelrolle made, so that after repeated repetition one star-shaped arrangement of several, about The winding core segments distributed around the toroidal circumference are formed. This means that the known winding machine for each additional winding roll stopped and new winding material must be inserted therein. The winding material storage reels have a certain size, the cause that the toroid does not shrink below a certain size can be. It should be added that after wrapping the first separate Windings or coils must be interconnected, which is next to the additional Time and the possibly increasing total copper resistance it also means that sources of error become possible. It is added that a complete Enclosure of the Toroidal core not guaranteed can be, so restrictions regarding size and efficiency are to be accepted.

In front In this background, the invention is based on the object Device of the type mentioned use advantageous further, so that in particular the existing disadvantages avoided as much as possible become.

This object is achieved according to the invention first and essentially according to claim 1, wherein it is stated that the magazine winding carrier in its cross section which intersects a Ringkernpositionierebene the device surrounds a cavity for receiving a ring profile portion of a wound in the device ring core and in the circumferential direction partially open or openable. This allows on the one hand, that the magazine winding carrier in the cross section measured at the toroidal cross section has a relatively larger circumference and that in this respect no limitation by the size of the toroidal inner opening, as a toroidal core in the cross section enclosing magazine winding carrier for unwinding or wrapping the winding material from there to the ring core does not need to be performed as in the prior art with its entire cross section through the toroidal inner opening. The diameter or circumference of the magazine winding carrier can be made larger in the cross-section compared to a toroidal core cross-section to a desired extent, for example. Be about twice, three times or more. It is advantageous that a relatively large length supply of the winding material, even with large, eg. For high-power transformers required wire or tape cross-section, is to stockpile on the magazine winding carrier during pre-winding. After the pre-winding, in which the magazine winding support encloses a portion of the toroidal core, the winding material can be directly, or radially inwardly and preferably substantially concentrically wound on the toroidal core, whereby also the mentioned winding material with a comparatively large cross section according to the Enclosure of the toroidal core portion given geometric conditions can be processed in a suitable manner. Preferably Ringkernpositioniermittel may be provided which are adapted to a positioning of a toroidal core to be wound, so that it passes through the cavity in the magazine winding carrier during the pre-wrapping and. The ring corepo Positioning means can be arranged outside and / or inside the magazine winding carrier and in particular also be suitable for the preferably motorized drive of a toroidal core in its circumferential direction. As stated at the outset, the circumference of the magazine winding carrier is designed to be open or open in sections with respect to a passage cross section of the toroidal core. This means that in such a cross section the cavity present in the magazine winding carrier lies within this sectionally open or openable circumference and under an enclosure of a toroidal core section through the magazine winding carrier in the sense of the invention, depending on the embodiment, is also to be understood as partially open or interrupted , With regard to the partially open or openable in cross section circumference of the magazine winding carrier can be designed as a device either in one piece or in several parts. Due to the larger in comparison to conventional magazine reels possible length stock can be achieved that in many applications even with thick conductor cross section when wrapping on the toroidal core to a primary or secondary winding entirely to dispense with a magazine change or its frequency is significantly reduced, causing the described in the prior art in conjunction with the plurality of winding segments to be interconnected disadvantages known or even avoided altogether. It is further preferred that toroidal core drive means are provided, by means of which a toroidal core is rotationally drivable in its circumferential direction. In particular, it is preferred that the toroidal core drive means comprise three rollers or roller pairs arranged in a triangular arrangement in the ring plane of the toroidal core. For adaptation to a toroidal core or to the inner or outer abutment against its wall, at least some of the rollers or roller pairs can be adjustable in their position and connected in turn to the rotary drive of the toroidal core with a rotary drive. In connection with a circumferential drive of the toroidal core, it is possible to wrap the winding material from the magazine winding carrier to the toroidal core not only spirally, but also helically or helically when required in the desired manner. In combination with the possible large length supply opens up according to the invention the possibility to wrap a closed ring core with a correspondingly coiled, over a desired part of the ring core circumference or the entire ring core circumference, possibly even over several revolutions, reaching winding. Furthermore, there is the possibility that for applying the winding material to the ring core is provided around a ring core cross-section, in particular motor-rotatable application device. This can expediently have at least one, in particular resilient or supported by pneumatic or hydraulic pressure medium, pressure roller, by means of which the winding material during wrapping of the magazine winding carrier on the toroidal core is pressed against this. Alternatively or in combination, there is the possibility that the application device has a plurality, preferably three, bending rollers, by means of which the winding material running from the magazine winding carrier can be pre-bent in such a way that a desired looping of the toroidal core cross-section is thereby achieved, in particular independently or if necessary Combination with a pressing element is favored.

According to a first preferred embodiment, it is provided that the magazine winding carrier is designed as a hollow gate segment, which can preferably extend over approximately half the circumference with respect to a ring core positioning plane, and whose core shell is openable or partially open with respect to a cross section lying transversely to this circumferential direction. It is further preferred that the Hohltorussegment has two annular half-shells, which are connected to a preferably the ring plane or Ringkernpositionier-level corresponding or parallel to its parting line connectable or detachable. In dissolved or in the open state, a toroidal core to be wound can be inserted into the interior of the half-shells and these can then be connected to one another. The ring torus is then available as a magazine wrap for pre-winding of winding material available. Depending on the outer diameter or core diameter of the magazine roll carrier in the cross section perpendicular to the circumference of the torus and its circumferential extent (for example over a quarter, preferably about half or three quarters of a circumference), a magazine wrap carrier which is suitable for receiving a considerable length supply of winding material is provided , The toroidal core to be wound can preferably be aligned concentrically relative to the hollow ring segment torus in the ring plane and / or cross-sectional plane perpendicular thereto. According concentric alignment are achieved for the winding or unwinding of winding material from the magazine winding carrier on the toroidal with respect to. A circular cross-section perpendicular to the symmetrical symmetrical, advantageously on a uniform wrapping impacting conditions. The winding or wrapping of winding material can advantageously be carried out by means of the said application device directly from the hollow-tuyere segment to the toroidal core, in particular under constant reduction of the bending radius of the winding material. The Hohltorussegment may preferably be tuned to a toroidal core to be wound in such a way that its hollow cross-section for receiving the toroidal core cross-section including the windings to be mounted thereon is large enough and can with regard to the possibility of adaptation to different toroidal cores and windings interchangeable be.

Concerning the first preferred embodiment It is further preferred that for pre-winding a feeder for winding material is present to the Hohltorussegment having bending roles, their relative position to a pre-bending of winding material to one regarding the on the Hohltorus resulting Vorwickelradius about the same size or slightly larger prebending radius is customizable. For processing winding materials with different elastic and plastic material behavior can in this regard a Adaptability of the feeder be present for example by mutually position adjustable bending rollers. It is further preferred that the feed device to a feed of wrapping material to the hollow gate segment in a direction which a component in the hollow-torus circumferential direction, i. H. a component in or parallel to a toroidal core positioning plane, adapted is. The winding material is the magazine winding carrier or Hollow torus thus supplied in total already pre-bent helically. The Feed can be useful starting from ei a forehead end of the Hohltorussegments done, where from the helical pre-bent winding material or its free end with running Feeder on the curved Ring coat postponed. Depending on the winding material and pre-bending conditions can be self-contained during the pre-winding of this postponement on the Ringtorus. Furthermore you can if necessary, if, for example, the cross section of the winding material too thick and / or the inhibition on the ring torus segment should be too big, on the Ringtorus segment preferably also to support the Umwickelns be provided rollers. Also, in the cavity of the toroidal nucleus if necessary elements for additional Storage of the toroidal be provided.

According to one second preferred embodiment it is possible, that the magazine winding carrier a plurality of annularly distributed guide elements for the winding material, in particular a plurality of guide rollers arranged to form a roller ring, wherein the radial position of the guide elements by means of releasable holders, in particular by means of radially oriented slots one holding surface after loosening adjustable holders, changeable is. Before pre-winding of winding material on the magazine winding carrier can a to be wound, preferably closed ring core with a Peripheral portion between adjacent guide rollers of the magazine winding carrier through in its inner, from the guide rollers Surrounding cavity are introduced so that the magazine winding carrier circumference surrounds the toroidal core portion, whereupon the reference below to a method according to the invention even closer can begin described pre-winding. With reference to the second preferred embodiment the device can be provided that for the unwinding or wrapping of Winding material on the toroidal core applying means a body of revolution which is to be enclosed a ring core portion has a through hole, wherein the the passage opening transverse to the opening axis surrounding cross-section either divisible or to the passage opening in regions, especially half-sided, open. As with the first preferred Embodiment can the applying device for achieving the rotational movement about the toroidal core cross section preferably have a motor drive. In connection with a likewise appropriate motor Drive for the rotary drive of the toroidal core in the ring circumferential direction can also be independent of a special embodiment an electrical control be present, with which the respective drive speeds to achieve windings on the toroid with desired Affect slope or adjust to a suitable ratio to let.

Concerning the said body of revolution of Mooring device is preferred that this means of a Anlegeeinrichtungsantriebes is rotatably drivable around the toroidal core and around that the rotational body at least one within the plane of rotation pneumatically to the toroidal core cross section pivotable pressure roller is provided. It is preferred that the Pressure roller on the rotating body is mounted eccentrically on a pivot axis and that the pressure roller by means of a particular eccentric acting on the pivot axis Pneumatic cylinder or piston is pivotable, wherein the pneumatic cylinder for pressure storage a check valve having. The winding material, i. the tape or the wire, lets itself accordingly by means of the applicator under pneumatic pressure against the toroidal core Spiral around it or preferably helically wound coiling. It exists the possibility, that the pneumatic cylinder before commissioning by means of a pneumatic line with a pressure in one for the particular application desired Height charged and then the supply line is removed again, whereupon the pneumatic pressure in the cylinder, according to the check valve preserved. The application device can thus unhindered, i. without restriction through supply lines, for rotation of the rotating body to the toroidal core cross section are driven. At the end of the winding process can the pressure in the pneumatic cylinder by pressing the pneumatic valve be specifically reduced again, so that the pressure roller can lift off the toroidal core easily.

Another, in the context of the invention so Probably as a development as well as in the context of possible independent claims significant aspect relates to an embodiment of a magazine winding carrier for the device according to the invention, which has a plurality of arranged to a roller ring guide rollers. According to this embodiment, there is the possibility that one or more of the guide rollers are coupled to a guide roller drive for supporting the winding and / or unwinding operation of the magazine reel. While when winding or wrapping of winding material on the toroidal in a likewise within the scope of the invention with freely rotatable, ie non-driven, guide rollers, the magazine winding depending on the rotational position of the applicator or the pressure roller as needed independently with some inertia circumferential movements in the just executes required direction, this circumferential movement can be facilitated in motor drive of the guide rollers and thus improved. It is preferred that the plane of rotation of the application device is parallel to the magazine winding plane or coincides with it, wherein the rotational body lies in a projection on the magazine winding plane wholly or partly within the magazine winding. If the winding material is removed from the radially inside of the magazine winding and fed to the application device, a time-dependent varying distance between the inner circumference of the magazine reel and the contact point of the winding material at the toroidal core cross section results depending on the phase position of the pressing body moving around the annular core cross section. This requires a time-dependent different length and curvature of the applicator section supplied portion of the winding material, so that the magazine winding can independently perform quasi-demand a swirling rotational movement with freely rotatable guide rollers to compensate. The proposed motor drive now eliminates or at least reduces the influence of the inertia of the magazine reel. It is possible, all or only a certain proportion of the guide rollers, each with a separate drive, eg. With an electric motor, stepper motor, etc., equip. Alternatively, however, a central or so far common drive would be conceivable. Appropriately, there is the possibility that means for controlling, in particular for program control, and / or to control the Anlegeeinrichtungsantriebs and / or the guide roller drive are provided, suitable for achieving a desired, in particular temporally variable, ratio of the speeds of Anlegeeinrichtung- and guide roller drives. In particular, it is also possible to drive the guide rollers time-dependent not only with different speed amount, but also in different directions or with different signs. It is further preferred that means are provided for the program control of the applicator drive and / or the guide roller drive, suitable for matching the speed of the drive means for the time-dependent provision of winding material of the magazine winding carrier for the application device. It is thus made possible that the wire or belt section leading from the inner turn of the magazine means to the applying device has a respectively suitable length in coordination with the time-varying rotational position of the contact device. An expedient development may be because the means for controlling and / or regulating the drives are adapted to also influence the speed of the toroidal core drive in coordination with the speed of Anlegeeinrichtungsantrieb and / or guide roller drive in the desired manner. Alternatively or in combination with a programmtechni rule control in which suitable characteristics for the speed ratio can also be determined based on existing experience, a sensor may be present, one of one or more the winding process influencing variables, in particular one of the phase position of the application device and / or the magazine reel and / or the toroidal core and / or the position or the course of the winding material between magazine winding and applying device generates dependent signal, which is fed to the means for controlling and / or regulating the drives.

Another aspect, which may have meaning in the context of the invention as a preferred embodiment or in the context of independent claims, relates to the guide rollers of a magazine winding carrier on which they are arranged to form a roller ring. Accordingly, there is the possibility that the axes of rotation of the guide rollers are held longitudinally displaceable in the winding radial direction on the magazine winding carrier, further comprising, in particular, means for generating a spring-like force with which the guide rollers are acted upon radially inward. A spring-like force is understood to mean, for example, a force generated by a spring and / or by a damper or a comparable manner. It is also possible, among other things, to wind up the magazine reel radially within the roller ring formed from the guide rollers or create by the winding material to the spiral magazine reel as the outermost layer on the outside of the guide rollers unroll, is fed with the guide rollers increasing diameter of the magazine winding can escape radially outward. Suitably, a supply device for the active supply of winding material to the magazine winding carrier may be provided, which has at least three rollers, of which verbun verbun at least one with a rotary drive that is, with the rollers arranged to each other such that the winding material passes through two nips formed by the rollers to create a curvature while being pressed against the driven roller. The creation of the magazine reel radially inside the guide rollers has the advantage that prior to the rewinding or unwinding of the winding material from the magazine reel to the toroidal core, it is possible to dispense with the conversion of the guide rollers from radially inward to radially outward.

The The invention further relates to a method for winding a closed Ring core with winding material, such as metallic wire or tape, especially for the production of chokes or transformers for the kilowatt to megawatt range, wherein the winding material to a magazine winding pre-wound and wrapped by the magazine winding on the toroidal core becomes.

One generic method is also known from WO 95/12887, to which the preceding versions is referenced. Proceeding from this, the object of the invention to develop such a method advantageous, so that the existing disadvantages possible be largely avoided.

These Object is according to the invention first and foremost according to claim 13 solved, taking care that the pre-winding of the winding material to a magazine winding is done such that the magazine winding a inner, compared to the ring core profile cross section larger hollow cross-section forms and encloses a ring core section therein. To the the resulting effects and benefits will be related to the concerning the device according to the invention versions directed. It is preferred that the winding material from the magazine reel with respect Central axis under radially inward in particular continuous reduction of the winding radius the toroid is wrapped. A continuous reduction, d. H. an interim enlargement excluding change, the winding radius is particularly suitable for processing winding material with big, especially for Needed applications in kilowatts to megawatts, Cross sections are advantageous while the processing is just such a winding material due to the rigidity of these conductors specifically in connection with closed ring cores so far problematic was. Alternatively or in combination, there is the possibility that the toroidal core while wrapping or wrapping of winding material from the magazine reel or from a magazine winding carrier is driven continuously in the toroidal circumferential direction, so that on the toroidal core a helical or spiral wound winding is formed. When wrapping, the winding material may preferably by means of a rotating about the toroidal cross-section application device the toroidal circumference are created. In particular, here is the Possibility, that the winding material when wrapping by means of a on the applicator provided pressing roller is pressed against the ring core. alternative or in combination there is the possibility that the winding material when wrapping by means of the application device provided bending rolls to the plant pre-bent against the toroidal core becomes.

According to one first preferred variant of the method, which preferably by means of the first preferred embodiment of the device according to the invention can be realized, the toroid core can be circumferentially sectioned, in particular concentric, in the cavity of a hollow torus segment with cross section openable or partially open cross-core sheath shaped magazine winding carrier arranged and subsequently the winding material are pre-wound on the magazine winding carrier. Appropriately the winding material during pre-winding before reaching the magazine winding carrier one opposite the resulting Vorwickelradius on the magazine winding carrier smaller or about the same size Prebending radius are pre-bent. It is also preferable that the winding material when winding the winding core to achieve a helical coiled wound magazine reel is fed in one direction, which includes a component in the magazine roll carrier circumferential direction.

With regard to a second preferred variant of the method, which is preferably to be realized by means of a device according to the invention according to the second preferred embodiment, the winding material can be pre-wound on a plurality of annularly distributed guide elements having, in particular on a plurality of arranged to a roller ring guide rollers, magazine winding carrier. After the pre-winding according to the invention there is the possibility that the guide elements or guide rollers are successively removed from the inside of the magazine reel and implemented for replacement support according to gradually against the outside of the magazine reel. It is advantageous that the magazine winding, ie the pre-wound on the magazine winding carrier winding material, starting with the inner end on the magazine winding carrier free end radially inward can be directly wrapped on the toroidal core, which is especially for the processing of Winding conductors with a large cross-section to avoid the otherwise caused by the great rigidity difficulties proves to be an advantage. Also with regard to the second preferred variant of the method, the pre-winding on the magazine winding carrier spiral or helical, possibly in several layers, carried out, but is preferred in this variant that the pre-winding is at least substantially spiral. Preferably, a device according to the invention according to the second preferred embodiment for the rotary drive of the magazine reel suitable drive means and preferably a control or regulating device for specifying a Umwickelvorgang favoring ratio of the rotational drive speeds of magazine winding and applying device. Correspondingly, with reference to the second preferred variant of the method according to the invention, the procedure is such that the magazine reel is preferably rotationally driven by motor when rewinding or unwinding winding material, preferably by selective adjustment to the speed with which the application device is rotationally driven the wrapping process takes place. For carrying out the invention, toroidal cores of any known design are basically suitable, ie in particular toroidal cores with solid or with so-called wound cross section. In this case, the cross-section may have, for example, a round shape or, as required, a polygonal, polygonal or the like shape. The device according to the invention or the method are also suitable both for the conversion of closed toroidal cores and, on the other hand, basically also open, slotted and so forth toroidal cores. With regard to the winding material, all materials known to a person skilled in the art are also suitable, in particular with, for example, a round wire or, for example, a rectangular, flat band cross section. On the one hand, it is suitable for bare, ie no insulating jacket exhibiting, winding material. In this case, for the production of insulating layers on the toroidal core, the winding material together with a separate insulating material (eg. Insulating tape) are pre-wound on the preferably same magazine winding carrier and from there co-layered adjacent to the toroidal core. Furthermore, winding material already provided with an insulating layer or an insulating jacket can also be used.

As a further aspect, which may be of importance in the context of the invention both as a preferred embodiment and in the context of independent claims, be provided in a method for winding a particular closed ring core with winding material of a magazine winding that the winding material from the magazine reel in several thread-like coiled and substantially precisely aligned superimposed layers is wound onto the toroidal core to form at least one coiled winding strand whose total cross-sectional thickness corresponds to a particular integer multiples of the cross-sectional thickness of the winding material. Such a method is suitable, in particular with one of the devices described above, to wind a conductor with a thick cross-section, which is preferably suitable for the kilowatt-to-megawatt range of a coil or of a transformer, also on a closed toroidal core. The winding strand produced by the process according to the invention may, for example, have a square or rectangular cross-section whose edge lengths may preferably be in the range of a few millimeters to a few centimeters (for example in the range of 6-12 cm). The method avoids the difficulties previously encountered in processing one-piece or single-layer conductors with corresponding cross-sections. These were that in order to achieve the high bending forces correspondingly strong and therefore expensive winding devices were needed. It should be added that when winding a thick conductor due to the large cross-section, ie due to the strains and tensile forces occurring in the edge phase, the risk of stress cracks was given and the winding single-layer conductor with a large cross section was very expensive. According to the proposal of the invention, that the winding material is wound onto the toroidal core in several precisely fitting layers, it is advantageous to use strip material whose cross-sectional width is greater, in particular larger by at least about one order of magnitude (ie by a factor of 10) than that Cross-sectional thickness or Baudicke. Such a thin band of conductor material is well deformable and can be processed by multiple accurate repetition of the helical winding process to a winding strand with a desired thicker conductor cross-section. If, for example, a square cross-section is to be produced with a band of 60 mm width and a thickness of 0.5 mm, the helical winding on the ring core can be carried out continuously over 120 revolutions of the ring core (or analogously at a band thickness of 1 mm 60 turns). It is possible that at each winding rotation of the toroidal core, the tape is placed back in its transverse direction accurately to the already existing from the previous rotation helical wrapping. Depending on the selected rotational speeds of the toroidal core on the one hand and applying means on the other hand, a desired number of screw threads can be obtained over the toroidal core circumference, for example in the range of 10 to 20 screw flights. In order to achieve an at least substantially accurate superimposition of the layers, it is possible in that prior to the winding of the winding material onto the toroidal core, it is coiled in a thread-like manner with a guide band, along which guide aids project radially outwards along at least one longitudinal side thereof. The guide band may preferably consist of an electrically insulating material. By means of the guide means, the winding material, preferably strip material, is accurately positioned during winding in its transverse direction. An alternative to the guide band may be that the toroidal core is covered with a cross-sectional openable hollow torus prior to winding, from the outer shell guide means for the winding material protrude radially outward, the guide aids spaced from each other along at least one helical course are arranged and wherein the Winding material is wound on the Hohltorus under lateral contact with the guide aids. It may be sufficient if, depending on the number of screw threads, a certain number of guide aids lie only on opposite circumferential regions of the toroidal core cross section. As a further alternative, it is contemplated that are used for the accurate winding of the winding material sensors whose signal is, for example, depending on the days of the winding material and used to drive control of the toroidal core and / or the application device to achieve a tailor-made winding suitable speed ratio of the drives becomes. After winding, it is possible for the formed winding strand to be cut in at least one place to make connections and for the two ends to be spatially separated to form the terminals. If, for example, a plurality of windings are to be formed for a toroidal coil, the winding leg can be separated analogously at a plurality of points distributed over the circumference. The drive of the device can be designed so that the ring core is driven by a motor (ie rotated) and the application device for the strip conductor rotates around the toroidal cross section, depending on the desired number of screw threads of the winding with a correspondingly adapted speed. In this case, the magazine reel can either independently perform needs-based rocking turns in the circumferential direction or driven in the manner described above themselves. The guide aids, or nubs can be used inter alia as increments to determine the toroidal rotation speed.

To other ways the inventive method and in particular to further develop its preferred variants expediently, is also related to the foregoing description of the device according to the invention taken. As the foregoing description shows, the invention is suitable for the production of different ring coils, especially with closed ring core and with thick winding material (conductor wire or - band), like this with toroidal core chokes and ring transformers for high power applications, especially for the kilowatt to megawatt range, in use. This allows the Invention, winding material also with preferably rigid cross-section of a magazine winding carrier with reduction of the bending radius directly either spirally or helically coiled each directed radially inwardly to wind on a toroidal core. The invention eliminates the difficulty which in the prior art is related to the stiffness of these conductors. By on the magazine wi ckel enabled huge length reserve can coils with primary and if necessary in addition Produce secondary winding, which windings for instead of several segments from a continuous ladder can exist, so that no internal interconnections are needed and corresponding circuit errors and avoid contact resistance become. Across from known techniques simplifies the manufacture of toroidal coils, and the ring core can be made even smaller, so that, for example, a Transformer is even more compact. Add to that the advantage that even a closed ring core with the windings in Ringkernumfangsrichtung helical complete can be enclosed, which is in terms of efficiency proves to be an advantage. moreover it is possible, a primary and a secondary winding to wind on the toroidal core, this if necessary, in each case continuously around the entire ring core circumference can be done. But there is also the possibility, for example, the inner primary helically circulating and then several outer, respectively spiral secondary windings applied.

The The invention also relates to a toroidal core choke comprising a closed core Toroidal core and at least one winding, which spirally wound having around the toroidal winding material, wherein on it is turned off that the cross section of the winding material a power range of the toroidal core choke in kilowatt to megawatt range is adjusted. The winding may be preferred with respect to the ring core plane continuously over the at least predominant Proportion of the ring core circumference or over extend the substantially entire ring core circumference.

The invention further relates to a toroidal transformer, comprising a closed ring core and at least one primary winding and one secondary winding, one or both of which having helically wound winding material running around the toroidal core, wherein the cross section of the winding material of the at least one primary and / or or seconds därwicklung is adapted to a power range of the ring transformer in the kilowatt to megawatt range. Expediently, at least one winding with a cross section adapted to the kilowatt to megawatt range with respect to the toroidal core can extend continuously over the at least predominant portion of the toroidal core circumference or over the substantially entire toroidal core circumference.

According to one In another aspect, the invention relates to a toroidal core choke, comprising a particular closed ring core and at least one winding, which thread wound around the toroidal core winding material wherein the winding material in a plurality, substantially precisely on top of each other lying layers of winding material under training at least a thread-like coiled winding strand whose thickness is greater than the thickness of the winding material, in particular its thickness is an integer Is several times the thickness of the winding material, wound up. Prefers can be provided as a winding material strip material whose Cross-section width larger, in particular at least about an order of magnitude (about factor 10) greater than the cross-sectional thickness is. Such a toroidal core choke can itself when using a very thin and thereby well-processed winding material in terms of the cross-section of the winding strand in kilowatts of be adapted to megawatt range. There is in particular the Possibility, that the winding strand has a rectangular, for example. Square cross-section whose thickness is in the range of several millimeters up to a few or several centimeters.

The The invention further includes a toroidal transformer comprising a toroidal core choke, in which the winding material in several, Essentially matching exactly superimposed Layers to form at least one helically wound Winding strand whose thickness is greater than the thickness of the winding material is wound, wherein the thread-like coiled winding strand the primary winding of the toroidal transformer and wherein the secondary winding a Having a number of winding material having spiral windings, which embrace the primary coil and connected to each other in series. Preferably, a plurality be provided by spiral windings, which are over the predominant or substantially Whole ring core circumference substantially equidistantly spaced apart are arranged.

The Invention will be described below with reference to the attached figures, which preferred embodiments show, closer described. It shows:

1 in perspective, the device according to the invention according to a first preferred embodiment and to be wound with winding material toroidal core;

2 a side view in the direction of II after 1 ;

3 a side view in the direction of III after 1 , where from 1 was deviated from the Vorwickeln;

4 a side view in the direction of IV after 2 , where from 2 was deviated from the Vorwickeln;

5 a plan view in the direction V to 4 , where different from 4 was started with wrapping;

6 in perspective, the device according to the invention according to a second preferred embodiment and to be wound with winding material toroidal core during the Vorwickelns;

7 a side view in the direction VII after 6 ;

8th a plan view in the direction of VIII after 7 ;

9 in perspective the in 6 shown device, at the beginning of wrapping after the transfer of the guide rollers;

10 a side view in the direction X after 9 ;

11 a plan view in the direction XI after 10 ;

12 a side view in the direction XII after 9 ;

13 a plan view in the direction XIII after 12 during wrapping;

14 in side view, the device according to the invention according to a further preferred embodiment and to be wound with winding material toroidal core;

15 a plan view in the direction XV after 14 ;

16 a side view in the direction XVI after 15 , but with a simplified front wall for the sake of simplicity;

17 a side view in the direction XVII after 15 but with a simplified front wall for easy visualization,

18 in one too 17 analogous representation of the device according to the invention according to yet another preferred embodiment,

19 in perspective the device according to the invention for winding a toroidal core according to a further preferred embodiment,

20 a sectional view in section plane XXa-XXa,

20a a detail enlargement of the detail XXa 20 .

20b a detail enlargement of the detail XXb 20 .

21 in perspective the in 19 shown device, however, during unwinding of the winding material from the magazine reel to the toroidal core,

22 a sectional view along sectional plane XXII-XXII in 21 .

22a a detail enlargement of the detail XXIIa 22 .

23 a rear view of the device in the direction XXIII according to 21 .

23a a detail enlargement of the detail XXIIIa 23 .

24 in plan view a toroidal core choke according to the invention according to a preferred embodiment,

24a an enlarged detail of the XXIVa detail 24 .

25 a plan view of the toroidal core choke according to the invention according to another preferred embodiment,

26 a sectional view along sectional plane XXVI-XXVI in 25

27 in perspective, a toroidal transformer according to the invention according to a preferred embodiment, in the course of production.

1 shows in perspective a device according to the invention 1 for winding a closed ring core 2 with winding material 3 according to a first preferred embodiment. In the illustrated state of use is already a closed ring core 2 for winding with a winding material 3 in the manner described below in the device 1 brought in. The latter has according to the selected embodiment, a magazine winding carrier 4 which is a half-circumference hollowtorus segment 5 is trained. In its cavity 6 is the closed ring core 2 by means of toroidal positioning means 7 concentric, rotatably supported in the circumferential direction. To the toroid 2 To bring in the position shown, is the Hohltorussegment 5 from two ring segment-shaped half-shells 5 ' . 5 '' formed along one with a centering edge 8th (And optionally with other, not shown centering) provided parting line 9 connectable to each other or are detachable from each other. To fix the closure state shown are in the region of an end face of the half-shells radially inside and outside releasable clamp closures 10 intended. The Hohltorusseg ment 5 can at its periphery accordingly along the parting line 9 for inserting and removing toroidal cores 2 opened and closed again. For positioning the toroidal core 2 are as toroidal positioning 7 three rollers 11 provided whose axes pierce the ring core plane vertically in triangular arrangement. Of these, the two positionally outer rollers can 11 by means of rotatable and position-adjustable tripods 12 from radially outward against a toroidal core inserted in the device 2 swiveled and held in the desired position. To change the position of the intermediate roller roller between them 11 , in particular to their change in distance with respect to a between the outer rollers 11 imaginary connection, is a self-locking in the example chosen variable speed 13 provided, which on a handwheel 14 to use. At the cross section of a selected toroidal core 2 suitably adapted position of the rollers is the toroidal core 2 in the ring plane at the same time laterally and perpendicular thereto, ie in the example shown in the vertical direction, aligned and supported. Depending on the toroidal cross section, the rollers can 11 be adapted separately with regard to their own profile. In the example shown, the middle roller is roll 11 with a drive motor 15 (see. 4 ) coupled to the toroidal core 2 in the circumferential direction, if necessary, to drive by frictional engagement. In the position of use shown, the toroidal core 2 held so that it with its half circumference the cavity 6 of the magazine winding carrier 4 engages, wherein at Drehumfangsantrieb run other toroidal core sections of the Hohltorussegment 5 be enclosed. In the example chosen, but not necessary comes the rollers 11 at the same time the importance of toroidal positioning and toroidal drive means. The device 1 indicates the application of winding material 3 to the ring core 2 a turning around a toroidal cross-section application device 16 on. As well as in connection with the following 2 to 5 becomes clear, this one by means of two parallel compression springs 17 Feedingly supported pressure roller 18 on for pressing of winding material 3 against the toroidal core 2 , The pressure roller 18 is on a sprocket 19 radially inwardly rotationally locked fit held. The feathers 17 are each a sliding pin 20 interspersed, each having one end with the pressure roller 18 is in communication and their respective other end longitudinally displaceable by (not graphically illustrated) radial bores on the sprocket run. In the position of use shown, the toroidal core 2 through a in a vertical frame wall 21 provided, for accessibility upwardly open recess 22 therethrough. In its four corners are on the frame wall 21 each pinion 23 that with an external toothing 24 from sprocket 19 engaged or a Umlaufnut bearing support rollers 23 ' , which with one to the toothing 24 concentric guide bead 24 ' interact, provided so that the sprocket 19 thereby being aligned. The at the bottom of the recess 22 lying pinions 23 is by means of a bevel gear with a in 4 recognizable rotary drive 25 , in the example chosen with an electric motor. By means of this, the application device 16 with the sprocket 19 and the pressure roller 18 be driven to rotate around the toroidal core in the circumferential direction. To the toroid 2 bring in the position shown, is the sprocket 19 run shared, with its halves, if necessary, solve each other or fix each other. The sprocket 19 and at its radially spring-supported pressure roller 18 create a winding device, by means of itself on the winding core 4 or hollow gate segment 5 pre-wound winding material 3 how special 4 seen, essentially concentric to the toroidal core 2 wrap around and thereby by means of spring force to the toroidal core 2 can be pressed. For pre-winding of winding material 3 on the magazine winding carrier 4 has the device 1 a feeder 26 on, which like the magazine winding carrier 4 , the tripods 12 , The gear 13 and the frame wall 21 on a base plate 27 are attached. The feeder 26 pulls the winding material 3 , wel chem in the example is winding wire, and has a to in 3 only symbolically indicated rotary drive 28 (For example, an electric motor) on. As 3 clarifies, runs the winding material 3 first through two rollers and from there, covered by the frame wall 21 and therefore shown in dashed lines, to three bending rollers, which are consistent with the reference numeral 29 marked and in the off 4 apparent manner by means of the rotary drive 28 driven wheels chain are driven. By means of this wire bending device, the winding wire can be bent so that a kind of coil spring is formed, which acts as a magazine winding carrier 4 serving Hohltorussegment 5 From the front side sets out and there forms the memory of which the Ab- or wrapping on the toroidal core 2 can be done. An independent pushing on of the winding material 3 on the magazine winding support is supported by the fact that the position of the bending rollers is adapted to that the winding material is bent as it passes through a Vorwickelradius which is about equal to or slightly larger than the radius of the toroidal core cross section. By a not shown in detail diagrammatically inclined position of the bending rollers 29 is also achieved that the winding material 3 the Hohltorussegment 5 in a direction slightly inclined to the drawing plane, ie, containing a component in Hohltorusumfangsrichtung direction is supplied.

The procedure of the with respect to the 1 to 5 described device 1 is as follows: First, a ring core 2 in the manner described in the device 1 entered and therein with respect to the hollow magazine winding carrier 4 aligned in a Ringkernpositionierebene and rotatably mounted. In addition, the toroidal core 2 also in the Hohltorussegment 5 be stored. Subsequently, the winding material 3 by means of the feeder 2 B retracted and by means of the bending rollers 29 realized bending device pre-bent in the manner already described, as the magazine winding carrier 4 serving Hohltorussegment 5 supplied from one end side in a slightly oblique direction and thereby pushed onto the magazine winding carrier cross-section as to this rotating screw or helical winding. The pre-winding, ie the refilling of the magazine, can take as long as one for the subsequent winding on the toroidal core 2 sufficient stock of length as magazine winding 36 on the magazine winding carrier 4 is wound helically. In the embodiment shown, the half shells 5 ' and 5 '' at its other, opposite, ie magazinendseitigen front end in the region of the clamp closures 10 on the outside radial projections 30 on, on the one hand for reinforcement and on the other hand as a stop for the helically pre-wound winding material 3 serve. After pre-winding, the winding wire can 3 with the help of the application device 16 with the pressure roller 18 and the sprocket 19 comprehensive winding device on the toroidal core 2 directly from or to be wrapped, this starting with the rear, ie the application device 16 facing free end of the magazine reel happens. This free end can be done manually or automatically by severing the winding material 3 in the area behind the feeder 26 formed and between pressure roller 28 and toroidal core 2 be trapped. Starting with this free end becomes the winding material 3 from the pressure roller 18 against the toroidal core 2 pressed on and the applying device 16 with pressure roller 18 in a desired direction of rotation D, which is due to the eruption in 4 becomes visible, turned around the toroidal core cross-section. The speed at which the winding material 3 from the hollow gate segment 5 is withdrawn again, in particular the diameter ratio between magazine winding carrier 4 and toroidal core 2 , from the rotational speed of the application device 16 and the rotational speed R of the toroidal core 2 in the direction of rotation R (see. 5 ). With regard to the differing cross-sectional circumferences of magazine winding carrier 4 and toroidal core 2 can the magazine winding when unwinding or wrapping either independently or, for example. Motor assisted to perform a rotation about the (curved) Wick development axis. Depending on the mentioned diameter ratio can with the semi-circumference pre-wound length stock on the toroidal core 2 an over its entire circumference reaching or possibly even multi-layer winding can be applied. To the position of the rollers 11 to the through the winding 31 on the toroidal core 2 To adapt enlarged cross-section, these can, for example, in a manner not shown resiliently against the toroidal core 2 be supported.

In the manner described can be with the device 1 z. B. initially a primary winding, which preferably has a few windings with a thick cross-section, and then outside about z. B. a secondary winding, which preferably has a larger number of turns with less thick cross-section, each applied from a continuous conductor. Specifically, this can also be done for the production of large transformers with a closed ring core and winding material of a correspondingly large and rigid cross-section.

The 6 to 13 relate to the device according to the invention 1 according to a second preferred embodiment, wherein in their function corresponding features are denoted by the same reference numerals. 6 shows in perspective the device 1 and a closed ring core 2 standing with one on a magazine winding carrier 4 the device spirally pre-wound winding material 3 , in the example chosen a band with a flat cross section, is to be wrapped. The magazine winding carrier 4 has in this selected embodiment a plurality of arranged to a roller ring guide rollers 32 on, which on axle journal 33 are rotatably mounted. The leadership roles 32 are on a rack wall 34 overall ring-like, each held in the radial direction variable position by the axle journal 33 one each in the frame wall 34 radially oriented longitudinal groove 35 passes through and in the desired radial position by means of suitable (in the direction of 6 behind ter the frame wall lying clamping means, for example. With a threaded end 47 of the axle journal 33 screwed nut 48 ) is detectable. It becomes clear that the leadership roles 32 of the multi-part magazine winding carrier also in this embodiment 4 have lateral guide walls. In the example chosen here, their spacing corresponds approximately to the width of the ribbon-like winding material 3 , Accordingly, the winding material became 3 after inserting the closed ring core 2 into the device 1 , as in 6 shown on the magazine winding carrier 4 spiraling to a magazine winding 36 pre-wound with a sufficient length for the desired application. It is clear that the radial support and the in 6 Example shown also for lateral support or guidance of the magazine reel 36 serving circumference of the magazine winding carrier 4 in several parts from the spaced guide rollers 32 formed and thereby in the circumferential direction at the interstices of the guide rollers 32 open, leaving a toroidal core to be wound 2 can be positioned in the position shown before the pre-winding. To the toroid 2 in the in 6 to keep selected horizontal toroidal positioning plane are as toroidal positioning 7 as an example, again three rolls of rollers 11 provided, which are shown schematically simplified, in structure and function but with respect to the 1 to 5 described toroidal positioning 7 correspond. Furthermore, a pillow block 37 provided, from the bearing shell for inserting or removing a closed ring core 2 a segment 38 Removable or subsequently re-insertable and attachable. The pillow block 37 has a frontally projecting, also by removing the segment 38 divisible sleeve 49 on which an inserted toroidal core 2 surrounds with sufficient radial distance for the intended winding and on which outside of the application device 16 is rotatably mounted. The pillow block 37 is like the frame wall 34 on a base plate 27 attached and can be adapted to different geometric requirements or replaced. Around the closed ring core 2 sideways through the space between two guide rollers 32 to be able to use through is in the frame wall 34 a cutout at the edge 39 brought in. Analog could - as an alternative to the illustrated embodiment of the pillow block 37 - This area in the upper Umschließungsbereich also be circumferentially open to the toroidal core 2 without first folding or removing a peripheral segment into the position required for the desired positioning. For receiving the ring profile cross section of the closed ring core 2 and the windings to be applied thereon surrounds the multi-part magazine winding carrier device 4 in its cross section which intersects said toroidal positioning plane, a cavity 6 , at the edge in the circumferential direction between the guide rollers 32 is partially open. The in the operating condition according to 6 already pre-wound magazine wraps 36 forms an inner, in comparison to the ring core profile cross-section by a multiple larger hollow cross-section 6 ' and encloses therein a narrow portion of the closed ring core 2 , In addition, the in 6 shown device 1 for applying pre-wound winding material 3 to the ring core 2 a pivotable about the toroidal cross-section application device 16 whose structure and function will be described on. In the example, the toroidal positioning means are used 7 analogous to the embodiment of 1 to 5 also as toroidal drive means with which a rotary drive of the toroidal core 2 in the circumferential direction is possible. These toroidal core drive means shown only in section are analogous to the roll rollers described in connection with the first preferred embodiment 11 (see also 1 to 3 ), of which the middle one has a drive. The 7 and 8th show that too 6 described situation in a frontal side view and in a plan view.

9 clarifies regarding the in 6 shown device 1 a later operating state or process step. At this time, during the pre-winding process, they are still radially inside the magazine reel 36 arranged annularly arranged guide rollers 32 already step by step individually with its axle journal 33 from the frame wall 34 detached and then at the same longitudinal groove 35 from radially outside again against the magazine reel 36 been scheduled. This can be done in the (not shown in the drawings) way that the journal 33 initially only a leadership role 32 for example, by twisting one in the direction of 9 behind the frame wall 34 lying clamping screw 48 from a threaded end 47 detached and out of the longitudinal groove 35 is pulled, then radially outside again in the same longitudinal groove 35 plugged therein from radially outward against the magazine winding 36 pushed and with the clamping screw 47 is backed up again. If this conversion step by step individually or at least only in limited groups of leadership roles, the magazine wrap 36 in the meantime, from the remaining guide rollers of the magazine roll carrier 4 held. The implementation of the guide rollers 32 brings the advantage that now the winding material 3 from the inside of the magazine roll 36 unrolled radially inward as needed and on the toroidal core 2 can be wrapped or wound up. With regard to the different cross sections or circumferences of toroidal core 2 and magazine winding carrier 4 can the magazine wrap 36 when unwinding or wrapping the winding material 3 on the toroid 2 self-propelled or, for example, motor-assisted to execute a rotation with demand-driven speed, which is achieved by the support on the rotatable guide rollers 32 is relieved. In the context of the invention is basically, ie independently of the specific embodiment, also the possibility to dispense with an additional drive of the application device in the case of a wound during wrapping with appropriate speed appropriate magazine winding. In the 9 perspective shown in the situation 10 and 11 shown in a frontal side view and a top view.

12 points in the direction XII 9 ie in too 10 opposite viewing direction, the same situation, the rack wall 34 for ease of illustration, as indicated by the dash-dot line, is shown transparent. So it becomes clear that from the radial inside of the magazine winding 36 unwound winding material 3 from a pressure roller 18 the applying device 16 against the cross section of toroidal core 2 is pressed while the applying device 16 for generating a winding on the toroidal core 2 is rotated in the direction indicated by the arrow. The pressure by the pressure roller 18 can be either adjustable rigid or, for example, resilient, by means of pneumatic (eg., Gas spring) or hydraulic pressure medium. The applying device 16 is itself designed as a rotational body, which for enclosing a toroidal core portion, a passage opening 41 having. This rotary body is divided into two parts with a parting line 42 executed so that the halves for inserting a toroidal core 2 separated or unfolded and then closed again and together by means of suitable fasteners 43 can be attached. 12 clarifies that the winding material 3 from the magazine wrap 36 with respect to its imaginary central axis, radially inward, with continuous reduction of the winding radius to the toroidal core 2 is wrapped. For rotational drive of the application device 16 eg in the in 12 shown arrow direction can not shown, for example, on the pillow block 37 attached motor (eg electric motor) serve. By means of the addressed toroidal drive means, the toroidal core 2 , z. B. as indicated by the arrow in 13 indicated, are rotated in the circumferential direction. Depending on a desired coordination between the rotational speeds of application device 16 and toroidal core 2 can, as in the top view in 13 shown on the toroidal core 2 a helical winding 31 with of this drive ratio sen dependent pitch are applied. In the in the 6 to 13 Ausfüh shown embodiment is the application device 16 on one of the pillow block 37 rotatably supported projecting sleeve, alternatively would be at a correspondingly reduced inner opening and a recording directly on the toroidal core 2 conceivable.

The 14 to 17 show one to the with respect to the 6 to 13 described embodiment substantially functionally identical further preferred embodiment of the device according to the invention 1 , It is using the same reference numerals for simplicity in the 16 and 17 the front view in the viewing direction (indicated by the dash-dot border) shown transparent. In the opposite direction, the different 16 and 17 in addition, that the leadership roles 32 in 16 still from radially inside and in 17 already from radially outside against the magazine winding 36 are attached. The pre-winding to the first supported by radially inside magazine magazine 36 can be carried out in a manner familiar to the person skilled in the art. In the in the 14 to 17 embodiment shown is provided that the around the toroidal core 2 rotating application device 16 as a rotational body a round, open to one side through hole 41 having. On a pedestal wall 44 are, the frame wall 34 zuweisend, distributed in a ring and matched to the outer contour of the application device 16 a plurality of support rollers 45 rotatably mounted. These are motor-driven (in a manner not shown in the drawings), preferably by frictional engagement, the application device 16 to drive in the direction of the rotary arrow. As in the embodiment described above, the winding material 3 from one to the docking device 16 around the toroidal cross section rotating pressure roller 18 against the toroidal core 2 pressed to produce a desired winding. Instead of the pressure roller 18 could also be provided presses or a pulling mechanism.

18 shows a frontal side view of another preferred embodiment of the device according to the invention 1 , which is largely identical to the construction and function described above. The difference is that at the docking facility 16 instead of a pressure roller 18 three bending rolls 46 are provided. With these, that is from the inside of the magazine wrap 36 unwound winding material 3 when passing through such vorgebogen that it is to the ring core 2 invests. With respect to the 14 to 18 Although preferred embodiments of the invention are described, although not shown in the drawing, analogous ring core positioning means are also provided in the form of three roller rolls, of which the middle one has a rotary drive.

19 shows in perspective a device according to the invention 1 for winding a toroidal core 2 with winding material 3 According to a further preferred embodiment, corresponding to the preceding embodiments corresponding or equivalent elements are denoted by corresponding reference numerals. The toroid 2 is above a console 50 by means of three as toroidal positioning means 7 serving roll rollers 11 aligned in the Ringkernpositionierebene and rotationally driven in its circumferential direction. On a holding frame 51 are to form the magazine winding carrier 4 several guide rollers 32 arranged in an annular manner, wherein the magazine winding plane spanned thereby is perpendicular to the ring core plane in space. 19 shows the device when winding winding material 3 on the magazine winding carrier 4 for producing a magazine roll 36 which has a cross section of the toroidal core 2 embraces. For this purpose, in the embodiment, a feeder 52 provided for the active supply of the winding material in the radially outer peripheral position of the spiral magazine roll. At the device 52 It is a 3-roll chair, where at least one of the three rollers 53 in a manner not shown by means of the electric motor 54 for driving the winding material 3 is driven. The rollers 53 are arranged to each other, that the selected in the example strip material is plastically pre-bent when passing two nips with a desired curvature and driven frictionally in this course. 20 relates to a sectional view along a behind the console 50 extending cutting plane. The winding of the winding material 3 happens so that the formed magazine wrap 36 immediately within the leadership roles 32 located. To allow the guide rollers 32 can dodge radially outward at a radial growth of the magazine reel, the guide rollers 32 on the magazine winding carrier 4 in winding radial direction by means of radial grooves 55 held longitudinally displaceable (see. 20b ). To always sufficient support of the magazine wrap 36 Achieve are at the leading roles 32 graphically not shown with means for generating a guide rollers radially inwardly acting spring force available. It is further provided that the guide rollers 32 each by an electric motor 56 can be rotationally driven, which can be actively supported if necessary, the winding and / or the unwinding of the magazine reel. The electric motors 56 are connected by means not graphically represented for controlling and / or regulating the temporal drive speed course.

21 shows in perspective the in 19 illustrated device 1 after pre-winding the magazine reel 36 , where already with the wrapping of winding material 3 on the toroid 2 was started. 22 again shows a sectional view and 23 a corresponding rear view. To the winding material 3 around the toroidal core 2 to wrap is one in its fundamental function of in 12 shown embodiment comparable application device 16 intended. This has a rotation body 57 on that with its center opening 58 a cross section of the toroidal core 2 to attack. To the rotation body 57 in the manner shown around the toroidal core 2 can put a screwed circumferential segment 57 ' first loosened and attached again after the desired positioning. The said center opening 58 is such that between the body of revolution 57 and the annular core cross-section a radial distance, suitable for receiving the windings to be generated, remains. The rotation body 57 is in the position shown by means of several circumferentially distributed support elements 60 rotatably held. For rotary drive of the rotating body 57 this has a toothing on the outside 59 on (cf. 22a ) engaged with one by means of an electric landing gear drive 61 driven pinion 70 stands. At the rotation body 57 is one within the plane of rotation to the cross section of the toroidal core 2 swinging pressure roller 18 (Vlg. 23a ) intended. Special is the pressure roller 18 eccentric one on the rotary body 57 held pivot axis 62 attached, wherein the pivot lever in the direction of 22a behind the rotation body 57 lies. At the rotation body 57 is another pivot point 63 swiveling a pneumatic cylinder 64 attached, its pneumatic piston 65 at its free end on an eccentric disc 66 is held, so that the pressure roller 18 at the pivot axis 62 is eccentrically pressurized. The pneumatic cylinder 64 has an in 22a indicated check valve 67 on, to which a pneumatic supply line for filling and possibly a derivative for Entlehren of compressed air can be connected.

The rear view according to 23 illustrates the initial phase when winding the winding material 3 on the toroid 2 , The pressure roller 18 moves with the rotation body 57 in the designated direction of rotation to the also of the magazine reel 36 encompassed cross-section of the toroidal core 2 and presses it from the innermost spiral turn of the magazine reel 36 removed winding material 3 pneumatically against the cross section of the toroidal core 2 at. During the rotation of the pressure roller occurs due to the geometric conditions depending on the angular or phase position to form a from the inner circumference of the winding to the toroidal core 2 extending supply arc 68 of time-varying length and curvature. Are the leadership roles 32 (These are in 23 indicated by dashed lines) arranged freely rotatable, the magazine winding 36 to compensate automatically perform rotational movements. In the embodiment shown, in which the guide rollers 32 can be actively driven, the compensating movement of the magazine winding 36 be actively supported by means of a control and / or regulation. While the winding material in the manner described around the cross section of the toroidal core 2 is wound around, there is a rotary drive of the toroidal core 2 in its circumferential direction, so that the winding material 3 wound up like a thread. In the manner already described there is the possibility that the thread-like helix over the entire circumference of the toroidal core 2 extends throughout and that on a thread-like coiled layer in further rounds of the toroidal core 2 one or more further layers of winding material are wound at least substantially accurate fit.

24 shows in plan view a toroidal core choke according to the invention 71 according to a preferred embodiment, which has been prepared in the manner previously described. This has a closed ring core in the example 2 with a winding 72 , which spirally wound around the toroidal core 2 running winding material 3 having. The special feature is that the winding material 3 in several, substantially exactly superposed layers to form a coiled winding strand 73 whose thickness is a multiple of the thickness of the winding material 3 is, wound up. The preparation was carried out in such a way that on the toroidal core 2 first an insulating guide tape 74 was wound with along both edges radially outwardly projecting guide aids 75 in the example chosen rod-pin-like guide nubs, through which it, in addition to a suitable adaptation of the rotational speeds of toroidal core 2 and applying device 16 , has come to the desired precise alignment. Starting from the in 24 shown manufacturing step, the winding strand 73 separated and the ends formed are connected to electrical terminals.

25 shows a toroidal core choke according to the invention 71 according to a further preferred embodiment. The difference to the in 24 variant shown is that in the production instead of the guide band 74 the toroidal core 2 first with a divisible on the circumference of the hollow gate 76 was encased, from the outer jacket guide aids 75 protrude. These are on average the 26 at each upper and lower vertex of the hollow torus 26 arranged (even if in the cutting guide only the upper guide aids 75 are recognizable).

27 shows in perspective a toroidal transformer according to the invention 79 in a preferred embodiment. This includes a toroidal core 2 with a circumferentially extending helically wound winding strand 73 , which in the manner described above consists of a plurality of precisely superimposed layers of winding material 3 was formed. The winding strand 73 represents the primary winding of the toroidal transformer 79 The secondary winding is made of a number of winding material 3 having spiral windings 77 formed, which surround the primary winding and over the circumference of the toroidal core 2 are spaced apart. In the chosen illustration is only a part of the spiral windings 77 shown while the remaining circumference spiral windings are still attached in the course of further production, after which the spiral windings are connected to form the secondary winding with each other in series. The spiral windings 77 can also be made with the device selected for the production of the primary winding, if doing the toroidal core 2 is not rotationally driven or only between the production of individual spiral windings.

All disclosed features are (for itself) essential to the invention. In the disclosure of the application will hereby also the disclosure content of the associated / attached priority documents (Copy of the advance notice) fully included, too for the purpose, features of these documents in claims present Registration with.

Claims (42)

Device for winding a particularly closed ring core with winding material, such as metallic wire or strip, in particular for the production of chokes or transformers for the kilowatt to megawatt range, wherein the device has at least one magazine winding carrier for pre-winding and then wrapping the winding material on a toroidal core, characterized in that the magazine winding carrier ( 4 ) in its cross section, which has a ring core positioning plane of the device ( 1 ), for receiving a ring profile cross-section of a in the device ( 1 ) toroidal core ( 2 ) a cavity ( 6 ) and in the circumferential direction sections open or openable. Device according to Claim 1 or in particular according thereto, characterized in that ring core positioning means ( 7 ), adapted to provide a ring core ( 2 ) is positionable so that it the cavity ( 6 ) of the magazine roll carrier ( 4 ). Device according to one or more of the preceding claims or in particular according thereto, characterized in that ring core drive means are provided, whereby a toroidal core ( 2 ) is rotatably drivable in the circumferential direction, wherein the toroidal drive means in particular three in the ring plane of the toroidal core 2 have distributed in triangular arrangement arranged rollers or pairs of rollers. Device according to one or more of the preceding claims or in particular according thereto, characterized in that for applying the winding material ( 3 ) to the toroidal core ( 2 ) a rotating about a toroidal cross-section application device ( 16 ) is provided. Device according to one or more of the preceding claims or in particular according thereto, characterized in that the application device ( 16 } at least one, in particular resilient or supported by pneumatic or hydraulic pressure medium, pressure roller ( 18 ) having. Device according to one or more of the preceding claims or in particular according thereto, characterized in that the applying device comprises a plurality, in particular three, bending rollers ( 29 . 46 ) having. Device according to one or more of the preceding claims or in particular according thereto, characterized in that the magazine winding carrier ( 4 ) than in particular over approximately half the circumference extending hollow gate segment ( 5 ) is formed, whose core shell is open or partially open with respect to the cross-section lying transversely to the circumferential direction. Device according to one or more of the preceding claims or in particular according thereto, characterized in that the hollow gate segment ( 5 ) two ring segment-shaped half shells ( 5 ' . 5 '' ), which in particular on the ring plane or parallel to its parting line ( 9 ) are connectable or detachable. Device according to one or more of the preceding claims or in particular according thereto, characterized in that a feed device ( 26 ) for winding material ( 3 ) to the hollow gate segment ( 5 ), which bending rollers ( 29 ) whose position is due to a pre-bending of winding material ( 3 ) on a with respect to the Vorwickel radius on the Hohltorus ( 5 ) are approximately equal to or slightly larger Vorbiegeradius customizable. Device according to one or more of preceding claims or in particular according thereto, characterized in that the feeding device ( 26 ) to a supply of winding material ( 3 ) to the hollow gate segment ( 5 ) in a direction containing a component in the hollow-torus circumferential direction. Device according to one or more of the preceding claims or in particular according thereto, characterized in that the magazine winding carrier ( 4 ) a plurality of ring-like distributed arranged guide elements, in particular a plurality arranged to a roller ring guide rollers ( 32 ), wherein the radial position of the guide elements by means of releasable holders, in particular by means of radially oriented slots of a holding surface after release slidable holders, is variable. Device according to one or more of the preceding claims or in particular according thereto, characterized in that the application device ( 16 ) has a rotational body which, for encompassing a toroidal core section, has a passage opening ( 41 ), wherein the passage opening ( 41 ) transverse to the opening axis surrounding cross section either divisible or to the passage opening ( 41 ) Regionally, in particular half-sided, is open. Device according to one or more of the preceding claims or in particular according thereto, characterized in that the rotary body ( 57 ) by means of a landing gear drive ( 61 ) is rotatably drivable around the toroidal core and that on the Rotationskör by ( 57 ) at least one within the plane of rotation pneumatically to the annular core cross section pivotable pressure roller ( 18 ) is provided. Device according to one or more of the preceding claims or in particular according thereto, characterized in that the pressure roller ( 18 ) on the rotary body ( 57 ) on a pivot axis ( 62 ) is mounted eccentrically and that the pressure roller ( 18 ) by means of a particular eccentric on the pivot axis ( 62 ) acting pneumatic cylinder ( 64 ) or piston ( 65 ) is pivotable, wherein the pneumatic cylinder ( 64 ) for pressure storage a check valve ( 67 ) having. Device according to one or more of the preceding claims or in particular according thereto, characterized in that one or more of the guide rollers ( 32 ) of the magazine roll carrier ( 4 ) with a guide roller drive ( 56 ) to support the winding and / or unwinding process of the magazine roll ( 36 ) are coupled. Device according to one or more of the preceding claims or in particular according thereto, characterized in that means for controlling, in particular program control, and / or for controlling the Anlegeeinrichtungsantriebs ( 61 ) and / or the guide roller drive ( 56 ) are provided, suitable for achieving a desired, in particular time-varying, ratio of the speeds of Anlegeeinrichtungs- and guide roller drives. Device according to one or more of the preceding claims or in particular according thereto, characterized in that the axes of rotation of the guide rollers ( 32 ) on the magazine winding carrier ( 4 ) are held longitudinally displaceable in the winding radial direction, in particular means for He generation of a spring-like force are present, with which the guide rollers ( 32 ) acted upon radially inward acting. Device according to one or more of the preceding claims or in particular according thereto, characterized in that a feed device ( 52 ) for the supply of winding material ( 3 ) to the magazine winding carrier ( 4 ), comprising at least three rollers ( 53 ), of which at least one with a rotary drive ( 54 ), the rollers ( 53 ) are arranged to one another such that the winding material ( 3 ) creating a curvature through two of the rolls ( 53 ) formed nip and against the driven roller ( 53 ) is pressed. Method for winding a particular closed ring core ( 2 ) with winding material ( 3 ), such as metallic wire or strip, in particular for the production of chokes or transformers for the kilowatt to megawatt range, wherein the winding material ( 3 ) to a magazine roll ( 36 ) and from the magazine reel ( 36 ) on the toroidal core ( 2 ), characterized in that the pre-winding into a magazine reel ( 36 ) such that the magazine roll ( 36 ) an inner, compared to the annular core profile cross section larger hollow cross-section ( 6 ' ) forms and encloses a ring core section therein. Method according to the preceding claim or in particular according thereto, characterized in that the winding material ( 3 ) from the magazine roll ( 36 ) With respect to the central axis radially inwardly, in particular continuous reduction of the winding radius on the toroidal core ( 2 ) is wrapped. Method according to one or more of the preceding claims or in particular according thereto, characterized in that the toroidal core ( 2 ) while wrapping continuously in toroidal core is driven in the direction of rotation, so that on the toroidal core ( 2 ) a helically coiled winding ( 31 ) is formed. Method according to one or more of the preceding claims or in particular according thereto, characterized in that the winding material ( 3 ) during wrapping by means of a rotating around the annular core cross-section application device ( 16 ) is applied to the toroidal circumference. Method according to one or more of the preceding claims or in particular according thereto, characterized in that the winding material ( 3 ) when wrapping by means of a at the application device ( 16 ) provided pressure roller ( 18 ) against the toroidal core ( 2 ) is pressed. Method according to one or more of the preceding claims or in particular according thereto, characterized in that the winding material ( 3 ) when wrapping by means of the application device ( 16 ) provided bending rolls ( 29 ) to rest against the toroidal core ( 2 ) is pre-bent. Method according to one or more of the preceding claims or in particular according thereto, characterized in that the toroidal core ( 2 ) circumferentially, in particular concentrically, in the cavity ( 6 ) as a hollow gate segment ( 5 ) with a cross-section openable or partially cross-sectionally open core sheath shaped magazine winding carrier ( 4 ) and then the winding material ( 3 ) on the magazine winding carrier ( 4 ) is pre-wound. Method according to one or more of the preceding claims or in particular according thereto, characterized in that the winding material ( 3 ) during pre-winding before reaching the magazine winding carrier ( 4 ) is pre-bent to a Vorbogenadius slightly larger or approximately equal to the Vorwickelradius on the magazine winding carrier. Method according to one or more of the preceding claims or in particular according thereto, characterized in that the winding material ( 3 ) during pre-winding the magazine winding carrier ( 4 ) to obtain a helically wound wound magazine reel ( 36 ) is supplied in a direction containing a component in a magazine-winding carrier circumferential direction. Method according to one or more of the preceding claims or in particular according thereto, characterized in that the winding material ( 3 ) on a plurality of ring-like distributed arranged guide elements, in particular on a plurality of arranged to a roller ring guide rollers ( 32 ), magazine winding carrier ( 4 ) is pre-wound. Method according to one or more of the preceding claims or in particular according thereto, characterized in that after the pre-winding the guide elements or guide rollers ( 32 ) successively from the inside of the magazine roll ( 36 ) and against the outside of the magazine reel ( 36 ) are implemented. Method according to one or more of the preceding claims or in particular according thereto, characterized in that after the transfer of the guide elements or guide rollers ( 32 ) of the magazine wrap ( 36 ) with its radially inner end portion starting on the toroidal core ( 2 ) is wrapped. Method according to one or more of the preceding claims or in particular according thereto, characterized in that the winding material ( 3 ) from the magazine roll ( 36 ) in several thread-like coiled, substantially exactly superimposed layers ( 78 ) on the toroidal core ( 2 ) is wound to form at least one coiled winding strand ( 73 ) whose total cross-sectional thickness is in particular a multiple of the cross-sectional thickness of the winding material ( 3 ) corresponds. Method according to one or more of the preceding claims or in particular according thereto, characterized in that as winding material ( 3 ) Strip material is used whose cross-sectional width is greater, in particular by at least an order of magnitude greater, than the cross-sectional thickness. Method according to one or more of the preceding claims or in particular according thereto, characterized in that prior to winding of the winding material ( 3 ) on the toroidal core ( 2 ) the toroidal core ( 2 ) thread-like coiled with a guide tape ( 74 ) is wrapped along its at least one longitudinal side guide aids ( 75 ) protrude radially outward. Method according to one or more of the preceding claims or in particular according thereto, characterized in that for the accurately fitting winding of the winding material ( 3 ) Sensors are used whose signal is dependent on the position of the winding material and for drive control or regulation of the toroidal core ( 2 ) and / or a piecing device while achieving a suitable speed for the accurate winding ratio of the drive or drives is used. Method according to one or more of the preceding claims or in particular according thereto, characterized in that after winding of the winding material ( 3 ) on the toroidal core ( 2 ) the winding strand ( 73 ) is separated at least one point for the production of terminals. Method according to one or more of the preceding claims or in particular according thereto, characterized in that the toroidal core ( 2 ) with a cross-sectional openable hollow gate ( 76 ) is encased, from the outer shell of guide aids ( 75 ) for the winding material ( 3 ) protrude radially outward, wherein the guide means ( 75 ) spaced apart along at least one helical course are arranged, and that the winding material ( 3 ) on the Hohltorus ( 76 ) under lateral abutment on the guide aids ( 75 ) is wound up. Ring core choke, comprising a closed ring core and at least one winding, which spirally wound around the ring core extending winding material, characterized in that the cross section of the winding material ( 3 ) is adapted to a power range of the toroidal core choke in the kilowatt to megawatt range and that the winding ( 31 ) extends continuously over the at least predominant portion of the ring core circumference, in particular over the substantially entire ring core circumference, with respect to the ring core plane. A toroidal transformer, comprising a closed ring core and at least one primary winding and one secondary winding, of which one or both have helically wound winding material running around the toroidal core, characterized in that the cross section of the winding material ( 3 ) of the at least one primary and / or secondary winding is adapted to a power range of the ring transformer in the kilowatt to megawatt range and that at least one winding ( 31 ) with adapted to the kilowatt to megawatt range cross section with respect to the toroidal core continuously over the at least predominant portion of the ring core circumference, in particular over the substantially entire ring core circumference extends. Ring core choke, comprising a particularly closed ring core ( 2 } and at least one winding ( 72 ), which spirally wound around the toroidal core ( 2 ) extending winding material ( 3 ), characterized in that the winding material ( 3 ) in several, substantially exactly superimposed layers ( 78 ) of winding material ( 3 ) with formation of at least one thread-like coiled winding strand ( 73 ) whose thickness is greater than the thickness, in particular a multiple of the thickness, of the winding material ( 3 ) is wound up. Ring core choke according to one or more of the preceding claims or in particular according thereto, characterized in that as winding material ( 3 ) Strip material is provided, whose cross-sectional width is greater, in particular by at least about an order of magnitude larger than the cross-sectional thickness. Toroidal core choke according to one or more of the preceding claims or in particular according thereto, characterized in that the winding strand ( 73 ) has a rectangular, in particular square cross-section whose thickness is in the range of several millimeters to a few or several centimeters. Toroidal transformer, in particular according to one or more of the preceding claims, characterized in that a toroidal core choke ( 71 ) is provided according to one or more of the preceding claims, whose thread-like coiled winding strand ( 73 ) forms the primary winding, and that the secondary winding comprises a number of winding material having spiral windings which engage around the primary coil and are connected to each other in series.