EP2992539A1 - Method for producing an induction component and an induction component - Google Patents

Method for producing an induction component and an induction component

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Publication number
EP2992539A1
EP2992539A1 EP15712918.0A EP15712918A EP2992539A1 EP 2992539 A1 EP2992539 A1 EP 2992539A1 EP 15712918 A EP15712918 A EP 15712918A EP 2992539 A1 EP2992539 A1 EP 2992539A1
Authority
EP
European Patent Office
Prior art keywords
block
coil
plate
induction
induction component
Prior art date
Legal status (The legal status is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the status listed.)
Granted
Application number
EP15712918.0A
Other languages
German (de)
French (fr)
Other versions
EP2992539B1 (en
Inventor
Markus Stark
Klaus Richter
Dorian DEGEN
Current Assignee (The listed assignees may be inaccurate. Google has not performed a legal analysis and makes no representation or warranty as to the accuracy of the list.)
Wuerth Elektronik Eisos GmbH and Co KG
Original Assignee
Wuerth Elektronik Eisos GmbH and Co KG
Priority date (The priority date is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the date listed.)
Filing date
Publication date
Application filed by Wuerth Elektronik Eisos GmbH and Co KG filed Critical Wuerth Elektronik Eisos GmbH and Co KG
Publication of EP2992539A1 publication Critical patent/EP2992539A1/en
Application granted granted Critical
Publication of EP2992539B1 publication Critical patent/EP2992539B1/en
Active legal-status Critical Current
Anticipated expiration legal-status Critical

Links

Classifications

    • H—ELECTRICITY
    • H01—ELECTRIC ELEMENTS
    • H01F—MAGNETS; INDUCTANCES; TRANSFORMERS; SELECTION OF MATERIALS FOR THEIR MAGNETIC PROPERTIES
    • H01F41/00—Apparatus or processes specially adapted for manufacturing or assembling magnets, inductances or transformers; Apparatus or processes specially adapted for manufacturing materials characterised by their magnetic properties
    • H01F41/02—Apparatus or processes specially adapted for manufacturing or assembling magnets, inductances or transformers; Apparatus or processes specially adapted for manufacturing materials characterised by their magnetic properties for manufacturing cores, coils, or magnets
    • H—ELECTRICITY
    • H01—ELECTRIC ELEMENTS
    • H01F—MAGNETS; INDUCTANCES; TRANSFORMERS; SELECTION OF MATERIALS FOR THEIR MAGNETIC PROPERTIES
    • H01F41/00—Apparatus or processes specially adapted for manufacturing or assembling magnets, inductances or transformers; Apparatus or processes specially adapted for manufacturing materials characterised by their magnetic properties
    • H01F41/02—Apparatus or processes specially adapted for manufacturing or assembling magnets, inductances or transformers; Apparatus or processes specially adapted for manufacturing materials characterised by their magnetic properties for manufacturing cores, coils, or magnets
    • H01F41/04—Apparatus or processes specially adapted for manufacturing or assembling magnets, inductances or transformers; Apparatus or processes specially adapted for manufacturing materials characterised by their magnetic properties for manufacturing cores, coils, or magnets for manufacturing coils
    • H—ELECTRICITY
    • H01—ELECTRIC ELEMENTS
    • H01F—MAGNETS; INDUCTANCES; TRANSFORMERS; SELECTION OF MATERIALS FOR THEIR MAGNETIC PROPERTIES
    • H01F27/00—Details of transformers or inductances, in general
    • H01F27/28—Coils; Windings; Conductive connections
    • H01F27/2823—Wires
    • H—ELECTRICITY
    • H01—ELECTRIC ELEMENTS
    • H01F—MAGNETS; INDUCTANCES; TRANSFORMERS; SELECTION OF MATERIALS FOR THEIR MAGNETIC PROPERTIES
    • H01F27/00—Details of transformers or inductances, in general
    • H01F27/28—Coils; Windings; Conductive connections
    • H01F27/2823—Wires
    • H01F27/2828—Construction of conductive connections, of leads
    • H—ELECTRICITY
    • H01—ELECTRIC ELEMENTS
    • H01F—MAGNETS; INDUCTANCES; TRANSFORMERS; SELECTION OF MATERIALS FOR THEIR MAGNETIC PROPERTIES
    • H01F27/00—Details of transformers or inductances, in general
    • H01F27/28—Coils; Windings; Conductive connections
    • H01F27/29—Terminals; Tapping arrangements for signal inductances
    • H01F27/292—Surface mounted devices
    • H—ELECTRICITY
    • H01—ELECTRIC ELEMENTS
    • H01F—MAGNETS; INDUCTANCES; TRANSFORMERS; SELECTION OF MATERIALS FOR THEIR MAGNETIC PROPERTIES
    • H01F41/00—Apparatus or processes specially adapted for manufacturing or assembling magnets, inductances or transformers; Apparatus or processes specially adapted for manufacturing materials characterised by their magnetic properties
    • H01F41/02—Apparatus or processes specially adapted for manufacturing or assembling magnets, inductances or transformers; Apparatus or processes specially adapted for manufacturing materials characterised by their magnetic properties for manufacturing cores, coils, or magnets
    • H01F41/04—Apparatus or processes specially adapted for manufacturing or assembling magnets, inductances or transformers; Apparatus or processes specially adapted for manufacturing materials characterised by their magnetic properties for manufacturing cores, coils, or magnets for manufacturing coils
    • H01F41/10—Connecting leads to windings
    • H—ELECTRICITY
    • H01—ELECTRIC ELEMENTS
    • H01F—MAGNETS; INDUCTANCES; TRANSFORMERS; SELECTION OF MATERIALS FOR THEIR MAGNETIC PROPERTIES
    • H01F5/00—Coils

Definitions

  • the invention relates to a method for producing an induction component and to an induction component produced by this method.
  • a method of manufacturing an induction component or inductor is already known (KR 10-1044607).
  • a coil core, a coil sheath and a lid made of a metallic-magnetic powder and pressed with the previously wound coil in a mold.
  • the winding ends are in the region of the front side of the inductor produced in this way.
  • KR 10-1044608 In another known method (KR 10-1044608), a plurality of terminal terminals in a first form and a plurality of individual coils are inserted into a second mold. The two forms are stacked and the coil terminals are soldered to the connection terminals.
  • the invention has for its object to provide a method for producing induction components, which leads to induction components with high quality and can be easily performed.
  • the invention proposes a method with the features mentioned in claim 1. Further developments of the invention are the subject of dependent claims.
  • a block is produced from a particularly pulverulent and / or ferromagnetic substrate in which the coils are embedded in a predefined orientation. Care is taken to ensure that the winding end forming the winding start is oriented in a certain orientation relative to the block. Pre-compression is then performed to establish some homogeneity within the block and to fix the coils within the block in their spatial orientation.
  • the pre-compressed block is placed on a plate having a mark for each coil. The marking is assigned in particular to the beginning of the winding. The combination of block and plate is pressed.
  • the substrate of the block is solidified and, inter alia, generates an impression of the marking in the side of the block associated with the plate.
  • the marking shows us the orientation of the coil and in particular the position of the winding start of the coils.
  • the coils and the associated markings are preferably arranged within a predetermined grid.
  • the surface of the block may be divided into non-overlapping areas, each area being associated with exactly one coil.
  • the markers are then arranged so that they each lie within an area associated with a coil.
  • the markings are arranged such that, after dividing the block into induction components, each induction component has an imprint of a marking on its upper side.
  • the upper side of the induction component is opposite to a lower side of the induction component with the exposed winding ends or connection contacts.
  • the pre-pressing can be carried out isostatically in order to solidify the substrate of the block as homogeneously as possible and without cracks.
  • the block After pressing, the block is released from the platen and the ends of the coil windings are exposed.
  • the block In the case of a winding wire which is circular in cross-section, it is also possible to carry out a partial removal of the wire up to approximately half of the cross section.
  • connection contacts The exposed ends of the coil windings are provided with connection contacts.
  • the block is divided to form the induction components each containing at least one coil or a double coil.
  • induction components that contain more than one coil.
  • an iron powder mixture having an iron content of, for example, 98% may be used.
  • winding ends of the coil which must be contacted, can be bent in a development of the invention such that they extend transversely to the axis of the coil in its end region.
  • winding ends protrude beyond the outer contour of the bobbin.
  • insulated wire is used, in particular paint-insulated wire.
  • a coil is provided with a core before it is embedded in the block.
  • This core can also be used, for example, to serve as a support for the wire during winding.
  • the wire is wound in this case on the core.
  • the coil is wound without a core and embedded in the block without a core.
  • the coil core can then be formed in this case by introducing the substrate powder into the interior of the coil and the subsequent pressing.
  • To perform the pre-compression can be provided to insert the block or the substrate with the coils used in a molding press and perform the pre-compression in this molding press.
  • the pre-pressing can be carried out according to a time / pressure profile.
  • this profile is chosen so that there is no damage to the insulation of the wire of the coil or the coil itself.
  • the block with the inserted coils is placed on a support plate before performing the isostatic pressing.
  • a low surface roughness of the support plate is ensured that the top of the induction component is also smooth. This improves the possibility of using a suction pad to treat the induction components in a pick-and-place procedure.
  • a material layer of an elastic material can be placed in a further development of the invention prior to performing the isostatic pressing, for example a silicone mat. This is to During the isostatic pressing, a disadvantageous deformation of the underside of the resulting induction components, in particular in the area of the end of the coil and thus of the subsequent wire exit, is avoided.
  • the unit consisting of support plate, pre-pressed block and the layer of elastic material is evacuated gas-tight and introduced into a fluid-filled pressure vessel in which the isostatic pressing under a certain pressure and / or with a determined temperature is carried out.
  • the pressure and / or the temperature can follow a predetermined time course.
  • the winding ends can be exposed by a mechanical process in which not only the insulation of the winding ends is removed, but also the wire is optionally provided with a larger contacting surface.
  • the exposure can be carried out by means of a milling process, in which optionally a circular winding wire is cut to half its cross section.
  • the subsequent dicing of the block containing the plurality of bobbins can be carried out by known methods, for example by mechanical sawing.
  • Figure 1 is a perspective view of a coil
  • Figure 2 is the view of the spool of Figure 1 from the side;
  • Figure 3 is a section through the block with inserted coils during the extortion / extortion; the process of isostatic pressing;
  • FIG. 5 shows the method step of exposing the coil ends of the coils
  • Figure 6 shows the result of exposing the coil ends
  • Figure 7 shows the induction components produced by the cutting of the block
  • Figure 8 is a perspective view of an induction component according to the invention
  • FIG. 9 shows the partially opened induction component of FIG. 8.
  • FIG. 1 shows the perspective view of a coil 8, which has the coil ends 6, 7 at its one axial end, shown at the top in FIG. Both winding ends 6, 7 are bent so that they extend transversely to the axis of the coil 8 and project beyond the outer contour of the coil 8 to the outside. In addition, the two winding ends 6, 7 extend along a diameter of the coil form.
  • the coil 8 has two winding layers, which are arranged one inside the other.
  • FIG. 2 shows the coil 8 of FIG. 1 from the side.
  • the winding ends 6, 7 of the winding forming the coil project beyond the outer contour of the coil and lie in a common plane.
  • a plurality of coils 8 are now embedded in a block of a substrate, wherein the substrate is formed, in particular, from a powder, in particular an iron powder mixture.
  • FIG. 3 shows the arrangement of a block 1 in a molding press 9, wherein the block 1 may consist of a first substrate powder before closing the press.
  • the block 1 may consist of a first substrate powder before closing the press.
  • the coil ends assume a specific orientation with respect to the side edges of the block 1.
  • the block 1 is in the molding press on a backing plate 1 1.
  • the upper part 12 of the molding press 9 is pressurized in the direction of the arrows 13, wherein the course of the pressure a time / pressure profile equivalent. This profile is selected so that the absorbed energy can not damage the wire insulation or the pre-grouted structure.
  • a pressure of 250 kg / cm 2 can be applied.
  • a second substrate powder is applied to the block 1 and a second pressing operation takes place.
  • the block 1 can, if necessary, to achieve required dimensions of the block 1 and the induction components produced therefrom in the molding press 9 are provided with a further layer of substrate powder, which is then pressed.
  • the substrate powder may be the same as or different from the first substrate powder.
  • a pressure of 200 to 270 kg / cm 2 can be applied.
  • the block 1 is now removed from the molding press 9 of FIG. 3 and introduced into a pressure vessel 14, which is shown schematically in FIG.
  • a support plate 15 with a block 1 facing top
  • the surface quality does not exceed a roughness of 0.1 ⁇ , and therefore may also be referred to as a polished plate.
  • This top 16 contains for each coil 8, a mark forming projection 17 in the form of a small cone.
  • Each of these cones 17 is associated with the orientation of the winding ends 6, 7 of the respective coil 8, in particular the winding start. In other words, the winding start of each coil 8 is in each case opposite a cone 17.
  • On the support plate 15 of the block 1 is placed aligned accordingly.
  • a silicone layer 18 is now placed.
  • the unit of block 1, support plate 15 and silicone layer 18 is then packed liquid-tight and optionally evacuated.
  • the pressure vessel 14 is completely filled with liquid, for example with water, and placed under pressure on all sides, as indicated by the arrows 19.
  • the silicone layer 18 is intended to prevent damage to the winding ends 6, 7 contained in the layer 10 during pressurization.
  • the cones 17 generate a complementary recess 21 in the bottom 3 of the block. 1
  • the pressure is much higher than in the previous pressing operations, for example, at least ten times the pressure, in particular 4500 kg / cm 2 .
  • a temperature and pressure profile over time can be followed.
  • a temperature application can take place.
  • the pressurization is advantageously carried out according to a predetermined time / pressure profile.
  • the temperature application can also follow a predetermined time / temperature profile.
  • FIG. 7 shows, starting from FIG. 6, how individual inductors 24 are produced from the contiguous block 1 by sawing.
  • FIG. 8 shows an inductor 24 in a perspective view.
  • the former underside 3 of the block 1 now forms the top of the inductor 24.
  • a hole 21 is seen, which was generated by the cone 17 of the base plate 15.
  • two terminal contact elements 25 are mounted, which are each electrically and mechanically connected to a coil end 6 and 7 respectively. This connection of the contact elements 25 with the winding ends 6, 7 is indicated in FIG. 9, in which the substrate 8, which is actually tightly surrounding the substrate, is not shown.
  • the top of the inductor having been pressed by means of the polished platen 15, has a very low surface roughness and therefore can be gripped reliably with the smallest suction pads in a pick-and-place process.
  • the inductor 24 has an edge length of between about 1 mm and 5 mm.

Abstract

The invention proposes a method for producing induction components. A plurality of coils is embedded in a block of in particular powdery substrate with a predefined orientation of the coil ends. The block is placed on a board having a marking for each coil. The combination of the block and the board is pressed. The winding ends are exposed by means of milling and provided with contacts. The block is then mechanically cut into individual elements which each contain a coil.

Description

Verfahren zum Herstellen eines Induktionsbauteils und Induktionsbauteil  Method for producing an induction component and induction component
Die Erfindung betrifft ein Verfahren zum Herstellen eines Induktionsbauteils und ein nach diesem Verfahren hergestelltes Induktionsbauteil. The invention relates to a method for producing an induction component and to an induction component produced by this method.
Es ist bereits ein Verfahren zum Herstellen eines Induktionsbauteils oder Induktors bekannt (KR 10-1044607). Dabei wird ein Spulenkern, ein Spulenmantel und ein Deckel aus einem metallisch-magnetischen Pulver hergestellt und mit der vorher gewickelten Spule in einer Form verpresst. Die Wicklungsenden liegen im Bereich der Stirnseite des auf diese Weise hergestellten Induktors. A method of manufacturing an induction component or inductor is already known (KR 10-1044607). In this case, a coil core, a coil sheath and a lid made of a metallic-magnetic powder and pressed with the previously wound coil in a mold. The winding ends are in the region of the front side of the inductor produced in this way.
Bei einem weiteren bekannten Verfahren (KR 10-1044 608) wird eine Vielzahl von Anschlussterminals in eine erste Form und eine Vielzahl einzelner Spulen in eine zweite Form eingelegt. Die beiden Formen werden aufeinandergelegt und die Spulenanschlüsse mit den Anschlussterminals verlötet. In another known method (KR 10-1044608), a plurality of terminal terminals in a first form and a plurality of individual coils are inserted into a second mold. The two forms are stacked and the coil terminals are soldered to the connection terminals.
Bei einem nochmals weiteren bekannten Verfahren (KR 10-201 1 -0100096) werden Spulenkern, Spulenmantel und Spulendeckel zusammen mit der Spule in einer Form verpresst. Die in der Stirnfläche des so entstandenen Induktors liegenden Wicklungsenden werden durch Sputtern kontaktiert. In yet another known method (KR 10-201 1 -0100096) spool core, coil shell and coil cover are pressed together with the coil in a mold. The lying in the end face of the resulting inductor winding ends are contacted by sputtering.
Der Erfindung liegt die Aufgabe zu Grunde, ein Verfahren zum Herstellen von Induktionsbauteilen zu schaffen, das zu Induktionsbauteilen mit hoher Qualität führt und sich leicht durchführen lässt. The invention has for its object to provide a method for producing induction components, which leads to induction components with high quality and can be easily performed.
Zur Lösung dieser Aufgabe schlägt die Erfindung ein Verfahren mit den im Anspruch 1 genannten Merkmalen vor. Weiterbildungen der Erfindung sind Gegenstand von Unteransprüchen. To solve this problem, the invention proposes a method with the features mentioned in claim 1. Further developments of the invention are the subject of dependent claims.
Das Verfahren sieht also vor, dass einzelne Spulen gewickelt werden. Diese Spulen können beliebige Formen aufweisen. Der dazu verwendete Draht kann ebenfalls einen beliebigen Querschnitt aufweisen. Es wird ein Block aus einem insbesondere pulverförmigen und/oder ferromagnetischem Substrat hergestellt, in den die Spulen in einer vordefinierten Ausrichtung eingebettet sind. Dabei wird darauf geachtet, dass das den Wicklungsanfang bildende Wicklungsende in einer bestimmten Ausrichtung gegenüber dem Block orientiert ist. Es erfolgt dann eine Vorverpressung, um eine gewisse Homogenität innerhalb des Blocks herzustellen und die Spulen innerhalb des Blocks in ihrer räumlichen Ausrichtung zu fixieren. Der vorverpresste Block wird auf eine Platte aufgelegt, die für jede Spule eine Markierung aufweist. Die Markierung ist insbesondere dem Wicklungsanfang zugeordnet. Die Kombination aus Block und Platte wird gepresst. Dabei wird das Substrat des Blocks verfestigt und unter anderem ein Abdruck der Markierung in der der Platte zugeordneten Seite des Blocks erzeugt. Die Markierung zeigt uns die Ausrichtung der Spule und insbesondere die Position des Wicklungsanfangs der Spulen an. Vorzugsweise sind die Spulen und die zugeordneten Markierungen innerhalb eines vorgegebenen Rasters angeordnet. Die Oberfläche des Blocks kann in nicht überlappende Bereiche unterteilt sein, wobei jeder Bereich genau einer Spule zugeordnet ist. Die Markierungen werden dann so angeordnet, dass sie jeweils innerhalb eines, einer Spule zugeordneten Bereichs zu liegen kommen. Vorteilhafterweise sind die Markierungen so angeordnet, dass nach dem Zerteilen des Blockes in Induktionsbauteile jedes Induktionsbauteil auf seiner Oberseite einen Abdruck einer Markierung aufweist. Die Oberseite des Induktionsbauteils liegt einer Unterseite des Induktionsbauteils mit den freigelegten Wicklungsenden beziehungsweise Anschlusskontakten gegenüber. The method thus provides that individual coils are wound. These coils can have any shapes. The wire used for this purpose can also have any desired cross section. A block is produced from a particularly pulverulent and / or ferromagnetic substrate in which the coils are embedded in a predefined orientation. Care is taken to ensure that the winding end forming the winding start is oriented in a certain orientation relative to the block. Pre-compression is then performed to establish some homogeneity within the block and to fix the coils within the block in their spatial orientation. The pre-compressed block is placed on a plate having a mark for each coil. The marking is assigned in particular to the beginning of the winding. The combination of block and plate is pressed. In this case, the substrate of the block is solidified and, inter alia, generates an impression of the marking in the side of the block associated with the plate. The marking shows us the orientation of the coil and in particular the position of the winding start of the coils. The coils and the associated markings are preferably arranged within a predetermined grid. The surface of the block may be divided into non-overlapping areas, each area being associated with exactly one coil. The markers are then arranged so that they each lie within an area associated with a coil. Advantageously, the markings are arranged such that, after dividing the block into induction components, each induction component has an imprint of a marking on its upper side. The upper side of the induction component is opposite to a lower side of the induction component with the exposed winding ends or connection contacts.
Das Vorpressen kann isostatisch erfolgen, um das Substrat des Blocks möglichst homogen und ohne Risse zu verfestigen. The pre-pressing can be carried out isostatically in order to solidify the substrate of the block as homogeneously as possible and without cracks.
Nach Verpressen wird der Block von der Auflagenplatte gelöst und die Enden der Spulenwicklungen werden freigelegt. Bei einem im Querschnitt kreisrunden Wicklungsdraht kann auch ein teilweiser Abtrag des Drahtes bis etwa auf die Hälfte des Querschnitts erfolgen. After pressing, the block is released from the platen and the ends of the coil windings are exposed. In the case of a winding wire which is circular in cross-section, it is also possible to carry out a partial removal of the wire up to approximately half of the cross section.
Die freigelegten Enden der Spulenwicklungen werden mit Anschlusskontakten versehen. The exposed ends of the coil windings are provided with connection contacts.
Der Block wird zur Bildung der jeweils mindestens eine Spule oder eine Doppelspule enthaltenden Induktionsbauteile zerteilt. The block is divided to form the induction components each containing at least one coil or a double coil.
Falls dies im Einzelfall gewünscht ist, kann auch eine Zerteilung in Induktionsbauteile erfolgen, die mehr als eine Spule enthalten. If this is desired in individual cases, it can also be divided into induction components that contain more than one coil.
In Weiterbildung der Erfindung kann vorgesehen sein, den Block aus ferromagnetischem Pulver in einem Druckverfahren durch Pressen zu formen. Beispielsweise kann ein Eisenpulvergemisch mit einem Eisen- Anteil von beispielsweise 98 % verwendet werden. In development of the invention can be provided to form the block of ferromagnetic powder in a printing process by pressing. For example, an iron powder mixture having an iron content of, for example, 98% may be used.
Die Wicklungsenden der Spule, die kontaktiert werden müssen, können in Weiterbildung der Erfindung derart abgebogen werden, dass sie in ihrem Endbereich quer zur Achse der Spule verlaufen. Insbesondere kann vorgesehen sein, dass die Wicklungsenden über die Außenkontur des Spulenkörpers hinaus ragen. The winding ends of the coil, which must be contacted, can be bent in a development of the invention such that they extend transversely to the axis of the coil in its end region. In particular, it can be provided that the winding ends protrude beyond the outer contour of the bobbin.
In nochmaliger Weiterbildung kann erfindungsgemäß vorgesehen sein, dass zum Herstellen der Spulen isolierter Draht verwendet wird, insbesondere lackisolierter Draht. In a further development can be inventively provided that for producing the coils insulated wire is used, in particular paint-insulated wire.
Es ist möglich und liegt im Rahmen der Erfindung, dass eine Spule, bevor sie in den Block eingebettet wird, mit einem Kern versehen wird. Dieser Kern kann beispielsweise auch dazu verwendet werden, als Halterung für den Draht während des Wickeins zu dienen. Der Draht wird also in diesem Fall auf den Kern aufgewickelt. It is possible and within the scope of the invention that a coil is provided with a core before it is embedded in the block. This core can also be used, for example, to serve as a support for the wire during winding. The wire is wound in this case on the core.
Es liegt ebenfalls im Rahmen der Erfindung, dass die Spule ohne Kern gewickelt und ohne Kern in den Block eingebettet wird. Der Spulenkern kann in diesem Fall dann durch das Einbringen des Substratpulvers in das Innere der Spule und das nachfolgende Verpressen gebildet werden. It is also within the scope of the invention that the coil is wound without a core and embedded in the block without a core. The coil core can then be formed in this case by introducing the substrate powder into the interior of the coil and the subsequent pressing.
Zum Durchführen der Vorverpressung kann vorgesehen sein, den Block beziehungsweise das Substrat mit den eingesetzten Spulen in eine Formpresse einzulegen und in dieser Formpresse die Vorverpressung durchzuführen. To perform the pre-compression can be provided to insert the block or the substrate with the coils used in a molding press and perform the pre-compression in this molding press.
Vorzugsweise kann das Vorverpressen entsprechend einem Zeit-/Druck-Profil erfolgen. Dabei wird dieses Profil so gewählt, dass es nicht zu einer Beschädigung der Isolierung des Drahtes der Spulen oder auch der Spulen selbst kommt. Preferably, the pre-pressing can be carried out according to a time / pressure profile. In this case, this profile is chosen so that there is no damage to the insulation of the wire of the coil or the coil itself.
Es wurde eingangs erwähnt, dass der Block mit den eingelegten Spulen vor dem Durchführen der isostatischen Verpressung auf eine Auflagenplatte aufgelegt wird. Die Seite des Blocks, die auf der Auflagenplatte liegt, bildet später die Oberseite des Induktionsbauteils, die also der zur Anbringung an der Leiterplatte bestimmten Unterseite gegenüberliegt. Durch Verwendung einer eine geringe Oberflächenrauigkeit aufweisenden Auflagenplatte wird dafür gesorgt, dass die Oberseite des Induktionsbauteils ebenfalls glatt ist. Dies verbessert die Möglichkeit, mithilfe eines Sauggreifers die Induktionsbauteile im pick-and-place Verfahren zu behandeln. Beispielsweise wird eine Auflagenplatte mit einer Oberflächenrauigkeit von R = 0,1 μηη oder weniger verwendet, wodurch sehr kleine Sauggreifer eingesetzt werden können. It was mentioned in the introduction that the block with the inserted coils is placed on a support plate before performing the isostatic pressing. The side of the block, which lies on the support plate, later forms the top of the induction component, which therefore faces the underside intended for attachment to the printed circuit board. By using a low surface roughness of the support plate is ensured that the top of the induction component is also smooth. This improves the possibility of using a suction pad to treat the induction components in a pick-and-place procedure. For example, a support plate with a surface roughness of R = 0.1 μηη or less is used, whereby very small suction pads can be used.
Auf die Seite des Blocks, auf der die Wicklungsenden der Spulen liegen, kann in Weiterbildung der Erfindung vor der Durchführung der isostatischen Verpressung eine Materialschicht aus einem elastischen Material aufgelegt werden, beispielsweise eine Silikonmatte. Damit soll wäh- rend des isostatischen Verpressens eine nachteilige Verformung der Unterseite der entstehenden Induktionsbauteile besonders im Bereich der Wicklungsendenden und somit des späteren Drahtaustritts vermieden werden. On the side of the block on which lie the winding ends of the coils, a material layer of an elastic material can be placed in a further development of the invention prior to performing the isostatic pressing, for example a silicone mat. This is to During the isostatic pressing, a disadvantageous deformation of the underside of the resulting induction components, in particular in the area of the end of the coil and thus of the subsequent wire exit, is avoided.
In Weiterbildung der Erfindung kann vorgesehen sein, dass die Einheit aus Auflagenplatte, vor- verpresstem Block und der Schicht aus elastischem Material gasdicht evakuiert und in einen mit Flüssigkeit gefüllten Druckbehälter eingebracht wird, in dem das isostatische Verpressen unter einem bestimmten Druck und/oder mit einer bestimmten Temperatur durchgeführt wird. Der Druck und/oder die Temperatur können einem vorgegebenen Zeitverlauf folgen. In a further development of the invention it can be provided that the unit consisting of support plate, pre-pressed block and the layer of elastic material is evacuated gas-tight and introduced into a fluid-filled pressure vessel in which the isostatic pressing under a certain pressure and / or with a determined temperature is carried out. The pressure and / or the temperature can follow a predetermined time course.
Nach der Beendigung des isostatischen Verpressens kann das Freilegen der Wicklungsenden durch einen mechanischen Vorgang erfolgen, bei dem nicht nur die Isolierung der Wicklungsenden entfernt, sondern auch der Draht gegebenenfalls mit einer größeren Kontaktierungsflä- che versehen wird. Beispielsweise kann das Freilegen mithilfe eines Fräsvorgangs erfolgen, bei dem gegebenenfalls ein kreisrunder Wicklungsdraht bis zur Hälfte seines Querschnitts abgefräst wird. After completion of the isostatic pressing, the winding ends can be exposed by a mechanical process in which not only the insulation of the winding ends is removed, but also the wire is optionally provided with a larger contacting surface. For example, the exposure can be carried out by means of a milling process, in which optionally a circular winding wire is cut to half its cross section.
Anschließend erfolgt eine Kontaktierung der freigelegten Wicklungsenden durch ein bekanntes Verfahren. Subsequently, a contacting of the exposed winding ends by a known method.
Das anschließende Zerteilen des die Vielzahl von Spulen enthaltenden Blocks kann mithilfe bekannter Verfahren durchgeführt werden, beispielsweise durch ein mechanisches Zersägen. The subsequent dicing of the block containing the plurality of bobbins can be carried out by known methods, for example by mechanical sawing.
Weitere Merkmale, Einzelheiten und Vorzüge der Erfindung ergeben sich aus den Ansprüchen und der Zusammenfassung, deren beider Wortlaut durch Bezugnahme zum Inhalt der Beschreibung gemacht wird, der folgenden Beschreibung bevorzugter Ausführungsformen der Erfindung sowie anhand der Zeichnung. Hierbei zeigen: Further features, details and advantages of the invention will become apparent from the claims and the abstract, the wording of which is incorporated by reference into the content of the description, the following description of preferred embodiments of the invention and with reference to the drawing. Hereby show:
Figur 1 eine perspektivische Ansicht einer Spule; Figure 1 is a perspective view of a coil;
Figur 2 die Ansicht der Spule der Figur 1 von der Seite; Figure 2 is the view of the spool of Figure 1 from the side;
Figur 3 einen Schnitt durch den Block mit eingelegten Spulen beim Von/erpressen; den Vorgang des isostatischen Verpressens; Figure 3 is a section through the block with inserted coils during the extortion / extortion; the process of isostatic pressing;
Figur 5 den Verfahrensschritt des Freilegens der Wicklungsenden der Spulen; Figur 6 das Ergebnis des Freilegens der Wicklungsenden; FIG. 5 shows the method step of exposing the coil ends of the coils; Figure 6 shows the result of exposing the coil ends;
Figur 7 die durch das Zerteilen des Blocks hergestellten Induktionsbauteile; Figur 8 die perspektivische Ansicht eines Induktionsbauteils nach der Erfindung; Figur 9 das teilweise geöffnete Induktionsbauteil der Figur 8. Figure 7 shows the induction components produced by the cutting of the block; Figure 8 is a perspective view of an induction component according to the invention; FIG. 9 shows the partially opened induction component of FIG. 8.
Das von der Erfindung vorgeschlagene Verfahren wird nun anhand eines Beispiels erläutert. The method proposed by the invention will now be explained by way of example.
Die Figur 1 zeigt die perspektivische Ansicht einer Spule 8, die an ihrem einen axialen Ende, in Figur 1 oben dargestellt, die Wicklungsenden 6, 7 aufweist. Beide Wicklungsenden 6, 7 sind so abgebogen, dass sie quer zu der Achse der Spule 8 verlaufen und über die Außenkontur der Spule 8 nach außen vorstehen. Außerdem verlaufen die beiden Wicklungsenden 6, 7 längs eines Durchmessers der Spulenform. Die Spule 8 weist zwei Wicklungslagen auf, die ineinander angeordnet sind. FIG. 1 shows the perspective view of a coil 8, which has the coil ends 6, 7 at its one axial end, shown at the top in FIG. Both winding ends 6, 7 are bent so that they extend transversely to the axis of the coil 8 and project beyond the outer contour of the coil 8 to the outside. In addition, the two winding ends 6, 7 extend along a diameter of the coil form. The coil 8 has two winding layers, which are arranged one inside the other.
Die Figur 2 zeigt die Spule 8 der Figur 1 von der Seite. Auch hier ist zu sehen, dass die Wicklungsenden 6, 7 der die Spule bildenden Wicklung über die Außenkontur der Spule vorstehen und in einer gemeinsamen Ebene liegen. FIG. 2 shows the coil 8 of FIG. 1 from the side. Here, too, it can be seen that the winding ends 6, 7 of the winding forming the coil project beyond the outer contour of the coil and lie in a common plane.
Im weiteren Verfahren werden nun mehrere Spulen 8 in einen Block aus einem Substrat eingebettet, wobei das Substrat insbesondere aus einem Pulver, insbesondere ein Eisenpulvergemisch, gebildet ist. In the further method, a plurality of coils 8 are now embedded in a block of a substrate, wherein the substrate is formed, in particular, from a powder, in particular an iron powder mixture.
Die Figur 3 zeigt nun die Anordnung eines Blocks 1 in einer Formpresse 9, wobei der Block 1 vor dem Schließen der Presse aus einem ersten Substratpulver bestehen kann. Bei dem Einbetten der Spulen in den Block 1 wird darauf geachtet, dass die Wicklungsenden eine bestimmte Orientierung gegenüber den Seitenkanten des Blocks 1 einnehmen. In einer Schicht 10 liegen die Wicklungsenden 6, 7. Der Block 1 liegt in der Formpresse auf einer Unterlagenplatte 1 1. Das Oberteil 12 der Formpresse 9 wird in Richtung der Pfeile 13 druckbeaufschlagt, wobei der Verlauf des Drucks einem Zeit-/Druck-Profil entspricht. Dieses Profil wird so ausgewählt, dass die absorbierte Energie zu keiner Beschädigung der Drahtisolation oder des vorverpress- ten Gefüges führen kann. Bei diesem Pressvorgang des ersten Substratpulvers kann beispielsweise ein Druck von 250 kg/cm2 aufgebracht werden. Gegebenenfalls kann, um geforderte Abmessungen des Blocks 1 einzuhalten, nach dem ersten Pressvorgang ein zweites Substratpulver auf den Block 1 aufgetragen werden und ein zweiter Pressvorgang erfolgen. Der Block 1 kann, falls erforderlich, zum Erreichen von geforderten Abmessungen des Blocks 1 bzw. der daraus hergestellten Induktionsbauteile in der Formpresse 9 mit einer weiteren Schicht aus Substratpulver versehen werden, die dann verpresst wird. Das Substratpulver kann dabei gleich oder verschieden zum ersten Substratpulver sein. Die Verwendung von unterschiedlichen Substratpulvern bei den einzelnen Pressvorgängen mit unterschiedlich magnetischen Eigenschaften erlaubt es, eine gewünschte Induktivität der hergestellten Induktionsbauteile einzustellen. Bei diesem zweiten Pressvorgang kann beispielsweise ein Druck von 200 bis 270 kg/cm2 aufgebracht werden. Nach Ablauf der dem Profil entsprechenden Zeit ist damit die Vorverpressung des Blocks 1 mit den Spulen 8 erledigt. 3 shows the arrangement of a block 1 in a molding press 9, wherein the block 1 may consist of a first substrate powder before closing the press. When embedding the coils in the block 1, care is taken that the coil ends assume a specific orientation with respect to the side edges of the block 1. In a layer 10, the coil ends 6, 7. The block 1 is in the molding press on a backing plate 1 1. The upper part 12 of the molding press 9 is pressurized in the direction of the arrows 13, wherein the course of the pressure a time / pressure profile equivalent. This profile is selected so that the absorbed energy can not damage the wire insulation or the pre-grouted structure. In this pressing operation of the first substrate powder, for example, a pressure of 250 kg / cm 2 can be applied. Optionally, in order to comply with required dimensions of the block 1, after the first pressing operation, a second substrate powder is applied to the block 1 and a second pressing operation takes place. The block 1 can, if necessary, to achieve required dimensions of the block 1 and the induction components produced therefrom in the molding press 9 are provided with a further layer of substrate powder, which is then pressed. The substrate powder may be the same as or different from the first substrate powder. The use of different substrate powders in the individual pressing operations with different magnetic properties makes it possible to set a desired inductance of the manufactured induction components. In this second pressing operation, for example, a pressure of 200 to 270 kg / cm 2 can be applied. After the time corresponding to the profile, the pre-compression of the block 1 with the coils 8 is completed.
Der Block 1 wird jetzt aus der Formpresse 9 der Fig. 3 entnommen und in einen Druckbehälter 14 eingebracht, der schematisch in Figur 4 dargestellt ist. In dem Druckbehälter 14 befindet sich eine Auflagenplatte 15 mit einer dem Block 1 zugewandten Oberseite, deren Oberflächengüte eine Rauigkeit von 0,1 μηη nicht überschreitet, und die daher auch als polierte Platte bezeichnet werden kann. Diese Oberseite 16 enthält für jede Spule 8 einen, eine Markierung bildenden Vorsprung 17 in Form eines kleinen Kegels. Jeder dieser Kegel 17 ist der Ausrichtung der Wicklungsenden 6, 7 der jeweiligen Spule 8 zugeordnet, insbesondere dem Wicklungsanfang. Mit anderen Worten liegt dem Wicklungsanfang jeder Spule 8 jeweils ein Kegel 17 gegenüber. Auf die Auflagenplatte 15 wird der Block 1 entsprechend ausgerichtet aufgelegt. Auf die auf der Oberseite 2 des Blocks 1 aufgebrachte Schicht 10 wird jetzt eine Silikonschicht 18 aufgelegt. Zweckmäßigerweise wird die Einheit aus Block 1 , Auflagenplatte 15 und Silikonschicht 18 dann flüssigkeitsdicht verpackt und gegebenenfalls evakuiert. Anschließend wird der Druckbehälter 14 vollständig mit Flüssigkeit gefüllt, beispielsweise mit Wasser, und allseits unter Druck gesetzt, wie dies durch die Pfeile 19 angedeutet ist. Die Silikonschicht 18 soll eine Beschädigung der in der Schicht 10 enthaltenen Wicklungsenden 6, 7 während der Druckbeaufschlagung verhindern. Durch die Beaufschlagung mit Druck erzeugen die Kegel 17 eine komplementäre Vertiefung 21 in der Unterseite 3 des Blocks 1 . Bei diesem isostatischem Pressen liegt der Druck wesentlich höher als bei den vorausgegangenen Pressvorgängen, beispielsweise bei mindestens dem zehnfachen Druck, insbesondere 4500 kg/cm2. Beim isostatischen Pressen kann vorteilhafterweise einem Temperatur- und Druckprofil über der Zeit gefolgt werden. The block 1 is now removed from the molding press 9 of FIG. 3 and introduced into a pressure vessel 14, which is shown schematically in FIG. In the pressure vessel 14 is a support plate 15 with a block 1 facing top, the surface quality does not exceed a roughness of 0.1 μηη, and therefore may also be referred to as a polished plate. This top 16 contains for each coil 8, a mark forming projection 17 in the form of a small cone. Each of these cones 17 is associated with the orientation of the winding ends 6, 7 of the respective coil 8, in particular the winding start. In other words, the winding start of each coil 8 is in each case opposite a cone 17. On the support plate 15 of the block 1 is placed aligned accordingly. On the applied on the top 2 of the block 1 layer 10, a silicone layer 18 is now placed. Conveniently, the unit of block 1, support plate 15 and silicone layer 18 is then packed liquid-tight and optionally evacuated. Subsequently, the pressure vessel 14 is completely filled with liquid, for example with water, and placed under pressure on all sides, as indicated by the arrows 19. The silicone layer 18 is intended to prevent damage to the winding ends 6, 7 contained in the layer 10 during pressurization. By applying pressure, the cones 17 generate a complementary recess 21 in the bottom 3 of the block. 1 In this isostatic pressing the pressure is much higher than in the previous pressing operations, for example, at least ten times the pressure, in particular 4500 kg / cm 2 . In isostatic pressing, advantageously, a temperature and pressure profile over time can be followed.
Während der Druckbeaufschlagung kann auch eine Temperaturbeaufschlagung erfolgen. Die Druckbeaufschlagung erfolgt vorteilhafterweise gemäß einem vorgegebenen Zeit-/Druckprofil. Die Temperaturbeaufschlagung kann ebenfalls einen vorgegebenen Zeit-/ Temperaturprofil folgen. Nach der Beendigung des isostatischen Verpressens wird der so hergestellte, mit der Schicht 10 versehene Block aus dem Druckbehälter 14 entnommen. Die Spulen 8 sind vollständig in den Block 1 eingebettet. In der Unterseite 3 des Blocks 1 sind die jeweils eine Markierung darstellenden durch die Kegel 17 erzeugten Vertiefungen 21 ausgebildet, die dem jeweiligen Wickelanfang der Spulen 8 gegenüberliegen. During the pressurization also a temperature application can take place. The pressurization is advantageously carried out according to a predetermined time / pressure profile. The temperature application can also follow a predetermined time / temperature profile. After completion of the isostatic pressing, the thus prepared block 10 is removed from the pressure vessel 14. The coils 8 are completely embedded in the block 1. In the bottom 3 of the block 1, each of which a mark representing by the cone 17 generated recesses 21 are formed, which are opposite to the respective winding start of the coil 8.
Als nächstes wird die Oberseite der Schicht 10, die in Figur 5 am linken Ende noch zu sehen ist, mithilfe eines Fräsers 22 soweit abgetragen, dass die Wicklungsenden 6, 7 jeder Spule 8 von ihrer Isolierung befreit und insbesondere bis etwa zur Hälfte ihres Querschnitts freigelegt werden. Dies ist im rechten Teil der Figur 5 dargestellt. Next, the upper side of the layer 10, which can still be seen in FIG. 5 at the left end, is removed by means of a milling cutter 22 so far that the winding ends 6, 7 of each coil 8 are stripped of their insulation and, in particular, exposed to about half their cross section become. This is shown in the right part of FIG.
Als Ergebnis liegt nun ein Block 1 vor, siehe Fig. 6, bei dem die Wicklungsenden 6, 7 aller Spulen 8 freigelegt sind. Diese Wicklungsenden 6, 7 können nun mit einem bekannten Verfahren mit Anschlusskontakten versehen werden. As a result, there is now a block 1, see Fig. 6, in which the winding ends 6, 7 of all coils 8 are exposed. These winding ends 6, 7 can now be provided with connection contacts by a known method.
Anschließend werden die als Endprodukte gewünschten Induktionsbauteile durch Zerteilen des Blocks 1 hergestellt, siehe Figur 7. Figur 7 zeigt, ausgehend von Figur 6, wie aus dem zusammenhängenden Block 1 durch Zersägen einzelne Induktoren 24 hergestellt sind. Subsequently, the induction components desired as end products are produced by dividing the block 1, see FIG. 7. FIG. 7 shows, starting from FIG. 6, how individual inductors 24 are produced from the contiguous block 1 by sawing.
Die jetzt folgende Figur 8 zeigt einen Induktor 24 in perspektivischer Ansicht. Die ehemalige Unterseite 3 des Blocks 1 bildet jetzt die Oberseite des Induktors 24. In dieser Oberseite ist ein Loch 21 zu sehen, das von dem Kegel 17 der Unterlagenplatte 15 erzeugt wurde. Auf der die Unterseite des Induktors 24 bildenden ehemaligen Oberseite des Blocks 1 sind zwei Anschlusskontaktelemente 25 angebracht, die jeweils mit einem Wicklungsende 6 bzw. 7 elektrisch und mechanisch verbunden sind. Diese Verbindung der Kontaktelemente 25 mit den Wicklungsenden 6, 7 ist in der Figur 9 angedeutet, bei der das die Spulen 8 eigentlich dicht umgebende Substrat nicht dargestellt ist. Die Oberseite des Induktors weist, da sie mittels der polierten Auflageplatte 15 gepresst wurde, eine sehr geringe Oberflächenrauigkeit auf und kann daher mit kleinsten Sauggreifern bei einem pick-and-place-Verfahren zuverlässig ergriffen werden. Typischerweise weist der Induktor 24 eine Kantenlänge zwischen etwa 1 mm und 5mm auf. Das Loch 21 , das als kegelförmiges Sackloch ausgebildet ist, gibt die Orientierung des Wicklungsanfangs an, so dass das Induktionsbauteil 24 mit der gewünschten Orientierung des Wicklungsanfangs automatisch platziert werden kann. The following figure 8 shows an inductor 24 in a perspective view. The former underside 3 of the block 1 now forms the top of the inductor 24. In this upper side, a hole 21 is seen, which was generated by the cone 17 of the base plate 15. On the underside of the inductor 24 forming the former upper side of the block 1, two terminal contact elements 25 are mounted, which are each electrically and mechanically connected to a coil end 6 and 7 respectively. This connection of the contact elements 25 with the winding ends 6, 7 is indicated in FIG. 9, in which the substrate 8, which is actually tightly surrounding the substrate, is not shown. The top of the inductor, having been pressed by means of the polished platen 15, has a very low surface roughness and therefore can be gripped reliably with the smallest suction pads in a pick-and-place process. Typically, the inductor 24 has an edge length of between about 1 mm and 5 mm. The hole 21, which is formed as a conical blind hole, indicates the orientation of the winding start, so that the induction component 24 can be placed automatically with the desired orientation of the winding start.

Claims

Patentansprüche claims
1 . Verfahren zum Herstellen von Induktionsbauteilen (24) mit folgenden Verfahrensschritten: 1 . Method for producing induction components (24) with the following method steps:
es wird eine Vielzahl einzelner Spulen (8) mit den beiden aus dem Spulenkörper herausragenden Enden (6, 7) der Wicklungen hergestellt;  a plurality of individual coils (8) are produced with the two ends (6, 7) of the windings protruding from the coil former;
jede Spule (8) der Vielzahl von Spulen (8) wird mit einer vorgegebenen Ausrichtung der Wicklungsenden (6, 7) in einen Block (1 ) aus einem, insbesondere pulverförmigen Substrat eingebettet;  each coil (8) of the plurality of coils (8) is embedded with a predetermined orientation of the coil ends (6, 7) in a block (1) of a, in particular powdery substrate;
der Block (1 ) wird auf eine für jede Spule (8) eine Markierung (17) aufweisende Platte (15) aufgelegt, wobei die Anzahl der Markierungen (17) der Anzahl der Spulen (8) entspricht;  the block (1) is placed on a plate (15) having a marking (17) for each spool (8), the number of marks (17) corresponding to the number of spools (8);
die Kombination aus Block (1 ) und Platte (15) wird gepresst,  the combination of block (1) and plate (15) is pressed,
2. Verfahren nach Anspruch 1 , dadurch gekennzeichnet, dass die Markierungen (17) so angeordnet sind, dass nach dem Zerteilen des Blocks (1 ) in einzelne Induktionsbauteile (24) jedes Induktionsbauteil (24) auf seiner Oberseite einen Abdruck einer Markierung (17) aufweist, wobei die Oberseite einer Unterseite des Induktionsbauteils (24) mit freigelegten Wicklungsenden gegenüberliegt. 2. The method according to claim 1, characterized in that the markings (17) are arranged so that after the division of the block (1) into individual induction components (24) each induction component (24) on its upper side an impression of a mark (17) with the upper side facing a lower side of the induction component (24) with exposed coil ends.
3. Verfahren nach Anspruch 1 oder 2, dadurch gekennzeichnet, dass die Markierungen (17) so angeordnet sind, dass die Markierungen (17) jeweils innerhalb eines Bereichs der Oberfläche des Blocks (1 ) zu liegen kommen, der einer jeweiligen Spule zugeordnet ist, wobei sich die den einzelnen Spulen zugeordneten Bereiche der Oberfläche des Blocks (1 ) nicht überschneiden. A method according to claim 1 or 2, characterized in that the markings (17) are arranged such that the markings (17) each lie within a region of the surface of the block (1) associated with a respective coil, wherein the individual coil associated areas of the surface of the block (1) do not overlap.
4. Verfahren nach einem der vorstehenden Ansprüche, bei dem der Block (1 ) vorver- presst wird und der vorverpresste Block auf die Platte (15) aufgelegt wird. 4. Method according to one of the preceding claims, in which the block (1) is pre-pressed and the pre-pressed block is placed on the plate (15).
5. Verfahren nach einem der vorstehenden Ansprüche, bei dem die Kombination aus Block (1 ) und Platte (15) isostatisch gepresst wird. 5. The method according to any one of the preceding claims, wherein the combination of block (1) and plate (15) is isostatically pressed.
6. Verfahren nach einem der vorstehenden Ansprüche, mit folgenden Verfahrensschritten: 6. The method according to any one of the preceding claims, with the following method steps:
nach dem, insbesondere isostatischen, Verpressen werden die Enden (6, 7) der Spulenwicklungen freigelegt; die freigelegten Enden (6, 7) der Spulenwicklungen werden mit Anschlusskontakten versehen; after, in particular isostatic, pressing the ends (6, 7) of the coil windings are exposed; the exposed ends (6, 7) of the coil windings are provided with connection contacts;
der Block (1 ) wird anschließend zur Bildung der einzelnen Induktionsbauteile (24) zerteilt.  the block (1) is then divided to form the individual induction components (24).
7. Verfahren nach wenigstens einem der vorhergehenden Ansprüche, bei dem die Wicklungsenden (6, 7) derart gebogen werden, dass sie quer zur Achse der Spule verlaufen. A method according to at least one of the preceding claims, wherein the coil ends (6, 7) are bent so as to be transverse to the axis of the coil.
8. Verfahren nach wenigstens einem der vorhergehenden Ansprüche, bei dem die Wicklungsenden (6, 7) über die Außenkontur des Spulenkörpers hinaus ragen. 8. The method according to at least one of the preceding claims, wherein the winding ends (6, 7) protrude beyond the outer contour of the bobbin.
9. Verfahren nach wenigstens einem der vorhergehenden Ansprüche, bei dem eine Spule (8) vor dem Einbetten in den Block (1 ) mit einem Kern versehen wird. 9. The method according to at least one of the preceding claims, wherein a coil (8) is provided with a core before embedding in the block (1).
10. Verfahren nach wenigstens einem der vorhergehenden Ansprüche, bei dem die Vor- verpressung einem Zeit Druck-Profil entsprechend erfolgt. 10. The method according to at least one of the preceding claims, wherein the pre-compression takes place in accordance with a time pressure profile.
1 1 . Verfahren nach wenigstens einem der vorhergehenden Ansprüche, bei dem eine Platte (15) mit einer geringen Oberflächenrauigkeit, insbesondere R=0,^m oder weniger, verwendet wird. 1 1. Method according to at least one of the preceding claims, wherein a plate (15) with a low surface roughness, in particular R = 0, m or less, is used.
12. Verfahren nach wenigstens einem der vorhergehenden Ansprüche, bei dem vor dem isostatischen Verpressen auf die der Platte (15) gegenüberliegenden Seite (2) des Blocks (1 ) eine Schicht aus elastischem Material aufgelegt wird. 12. The method according to at least one of the preceding claims, wherein before the isostatic pressing on the plate (15) opposite side (2) of the block (1) a layer of elastic material is placed.
13. Verfahren nach wenigstens einem der vorhergehenden Ansprüche, bei der das isostatische Verpressen in einem mit Flüssigkeit gefüllten Druckbehälter (14) durchgeführt wird. 13. The method according to at least one of the preceding claims, wherein the isostatic pressing in a liquid-filled pressure vessel (14) is performed.
14. Verfahren nach wenigstens einem der vorhergehenden Ansprüche, bei dem das Freilegen der Wicklungsenden (6, 7) durch einen mechanischen Vorgang erfolgt. 14. The method according to at least one of the preceding claims, wherein the exposure of the coil ends (6, 7) takes place by a mechanical operation.
15. Induktionsbauteil (24) mit einer Spule (8) , herstellbar entsprechend einem Verfahren nach wenigstens einem der vorhergehenden Ansprüche. 15. induction component (24) with a coil (8), producible according to a method according to at least one of the preceding claims.
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RU2016144982A (en) 2018-05-24
AU2015251105B2 (en) 2017-12-07
RU2660808C2 (en) 2018-07-10
HK1222473A1 (en) 2017-06-30
RU2016144982A3 (en) 2018-05-24
SG11201607661XA (en) 2016-10-28
TW201606821A (en) 2016-02-16
CN106575570B (en) 2018-07-03
TWI578344B (en) 2017-04-11
US9761373B2 (en) 2017-09-12
KR20160136416A (en) 2016-11-29
IL247682B (en) 2018-01-31
CA2944379A1 (en) 2015-10-29
KR101867204B1 (en) 2018-07-17
CN106575570A (en) 2017-04-19
CA2944379C (en) 2018-06-12
AU2015251105A1 (en) 2016-09-29
DE102014207635A1 (en) 2015-10-29
EP2992539B1 (en) 2017-05-10
JP2017514309A (en) 2017-06-01
ES2632479T3 (en) 2017-09-13
JP6404943B2 (en) 2018-10-17
US20170032892A1 (en) 2017-02-02

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