EP3134907B1 - Method for producing an induction component - Google Patents
Method for producing an induction component Download PDFInfo
- Publication number
- EP3134907B1 EP3134907B1 EP15717127.3A EP15717127A EP3134907B1 EP 3134907 B1 EP3134907 B1 EP 3134907B1 EP 15717127 A EP15717127 A EP 15717127A EP 3134907 B1 EP3134907 B1 EP 3134907B1
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- 230000006698 induction Effects 0.000 title claims description 23
- 238000004519 manufacturing process Methods 0.000 title description 7
- 238000004804 winding Methods 0.000 claims description 41
- 239000000758 substrate Substances 0.000 claims description 33
- 238000000034 method Methods 0.000 claims description 32
- 239000000843 powder Substances 0.000 claims description 30
- 238000000465 moulding Methods 0.000 claims description 20
- 238000003825 pressing Methods 0.000 claims description 10
- 239000007788 liquid Substances 0.000 claims description 2
- 230000000873 masking effect Effects 0.000 claims description 2
- 239000000463 material Substances 0.000 claims 1
- 238000011161 development Methods 0.000 description 6
- 230000018109 developmental process Effects 0.000 description 6
- 238000000462 isostatic pressing Methods 0.000 description 6
- 230000006835 compression Effects 0.000 description 5
- 238000007906 compression Methods 0.000 description 5
- 230000005294 ferromagnetic effect Effects 0.000 description 4
- 229920001296 polysiloxane Polymers 0.000 description 3
- 238000004544 sputter deposition Methods 0.000 description 3
- 239000003302 ferromagnetic material Substances 0.000 description 2
- 238000009413 insulation Methods 0.000 description 2
- 229910000679 solder Inorganic materials 0.000 description 2
- 230000000295 complement effect Effects 0.000 description 1
- 230000001419 dependent effect Effects 0.000 description 1
- 238000001514 detection method Methods 0.000 description 1
- 238000000227 grinding Methods 0.000 description 1
- 238000002955 isolation Methods 0.000 description 1
- 230000005291 magnetic effect Effects 0.000 description 1
- 239000006247 magnetic powder Substances 0.000 description 1
- 239000002184 metal Substances 0.000 description 1
- 238000001465 metallisation Methods 0.000 description 1
- 238000003801 milling Methods 0.000 description 1
- 239000000203 mixture Substances 0.000 description 1
- 238000002360 preparation method Methods 0.000 description 1
- 239000007787 solid Substances 0.000 description 1
- 230000003746 surface roughness Effects 0.000 description 1
- XLYOFNOQVPJJNP-UHFFFAOYSA-N water Substances O XLYOFNOQVPJJNP-UHFFFAOYSA-N 0.000 description 1
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Classifications
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- H—ELECTRICITY
- H01—ELECTRIC ELEMENTS
- H01F—MAGNETS; INDUCTANCES; TRANSFORMERS; SELECTION OF MATERIALS FOR THEIR MAGNETIC PROPERTIES
- H01F17/00—Fixed inductances of the signal type
- H01F17/04—Fixed inductances of the signal type with magnetic core
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- 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
- H01F27/24—Magnetic cores
- H01F27/255—Magnetic cores made from particles
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- 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
-
- 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
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- 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
- H01F41/0206—Manufacturing of magnetic cores by mechanical means
- H01F41/0246—Manufacturing of magnetic circuits by moulding or by pressing powder
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- 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
- H01F41/06—Coil winding
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- 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
- H01F41/12—Insulating of windings
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- 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
- H01F41/12—Insulating of windings
- H01F41/127—Encapsulating or impregnating
-
- H—ELECTRICITY
- H01—ELECTRIC ELEMENTS
- H01F—MAGNETS; INDUCTANCES; TRANSFORMERS; SELECTION OF MATERIALS FOR THEIR MAGNETIC PROPERTIES
- H01F17/00—Fixed inductances of the signal type
- H01F17/04—Fixed inductances of the signal type with magnetic core
- H01F2017/048—Fixed inductances of the signal type with magnetic core with encapsulating core, e.g. made of resin and magnetic powder
Definitions
- the invention relates to a method for producing an induction component and to an induction component produced by this method.
- a method for producing an inductor is already known (US Pat. 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.
- a plurality of terminal terminals are set in a first shape and a plurality of individual coils are set in a second shape.
- the two forms are stacked and the coil terminals are soldered to the connection terminals.
- the invention is based on the object to provide a method for the manufacture of induction components, which can be carried out easily and with the aid of a variety of induction components can be produced simultaneously.
- the invention proposes a method with the features mentioned in claim 1. Further developments of the invention are the subject of dependent claims.
- a multiplicity of coils are arranged next to one another and embedded in a block of pressed ferromagnetic substrate common to all coils.
- the interior of the coils arranged in the block is filled with the powdered, for example, ferromagnetic substrate, and the substrate powder is then pressed.
- the wires leading to the coil turns of each coil are exposed and provided with terminal contacts. Only then is a division of the block in the individual induction components, which then normally contain only a single coil. In some cases, induction components can also be made by dividing the block containing more than one coil.
- the individual coils of the plurality of coils can be identical to one another. But it is also possible that the coils deviate from each other, both in number of turns and in shape.
- the block is formed only after the coils have been arranged, for example by the substrate powder being applied around the coils and then being pressed.
- the block is first produced by pressing the substrate powder for each coil of a cavity which corresponds in shape and size to a respective coil, and that the coils are then inserted into the cavity.
- a teaching is provided which has a plurality of juxtaposed and mutually parallel pin.
- a winding wire can then make the coils by wrapping the individual pins using a suitable device. It can be provided that a continuous wire for a plurality of coils, possibly also for all coils, is used.
- this gage may also serve to locate the coils during manufacture of the ferromagnetic material block.
- the gauge is placed in a molding press with the coils wound on its spigot. Subsequently, the substrate powder is poured into the molding press until the pins are completely covered with powder. Then, a compression of the substrate powder, so that is produced as a result of the provided with the embedded coil block.
- the teaching is removed with the pin from the block, so that now the block remains with the coils whose interior is hollow.
- the block can now be turned over, so that the leading into the interior of the coil opening is directed upward.
- the block is placed in a molding press and replenished substrate powder, which now fills the interior of the coil.
- a prefabricated spool core can be used.
- the top of the block Prior to attaching the terminal contacts can be provided in a further development of the invention, the top of the block, so the side on which the wires between the coils, to provide with cuts between the coils. In making these cuts, continuous wires can be separated so that at the same time the coil ends of the coils are defined.
- the attachment of the terminal contacts for example by sputtering, then takes place in the incisions, so that the walls of the incisions are provided with metallization.
- a masking before the application of the connection contacts can then be done in rows.
- a gauge 1 is used, which can be used several times.
- This teaching 1 is in FIG. 1 and FIG. 2 shown. It contains a wire winding plate 2, which is formed at right angles in the example shown. On top of the wire winding plate 2 are three rows of Pins 3 arranged, which are aligned in four columns. In the example shown all circular cylindrical pin 3 have the same diameter and, as from FIG. 2 shows the same length. All pins 3 on the top of the wire winding plate 2 are perpendicular to the wire winding plate and are thereby aligned parallel to each other. The distance between the individual pins 3 in the direction of the rows is identical, as well as in the direction of the columns. The pins 3 go over with a radius in the plate 2, which ensures that the coil, see Fig.
- winding end and winding start are guided out of the coil in a radius to the outside. This prevents damage to the insulation of the winding wire and also kinking and damaging of the winding wire when embedding in the substrate and when pressing the substrate.
- a wire 4 is now wound around the pins, which is continuous in the example shown in Figure 3 for each of a number of pins 3. This results in a coil 5 for each pin 3.
- the number of windings in each coil 5 may be identical.
- FIG. 3 illustrated arrangement in which a separate wire 4 is used for each row of pins 3, an arrangement is also possible in which a continuous wire 4 is used for all pins 3.
- FIG. 4 shows schematically the wound teaching of FIG. 3 from the side, ie from the same direction as the view of FIG. 2 ,
- the overhanging the side edges of the wire winding plate 2 part of the wire 4 is cut off, and the teaching 1 is now inserted into a schematically illustrated molding press 6, see Fig. 5 ,
- the gauge 1 is oriented so that the wire winding plate 2 is below and the pins 3 protrude with the coil 5 in the interior of the molding press 6.
- a first substrate powder 7 is introduced into the interior of the molding press 6 until the pins 3 are completely hidden in the substrate powder 7.
- the substrate powder 7 is now pressed to form a solid block, which is not shown in detail. In this pressing operation of the first substrate powder 7, for example, a pressure of 250 kg / cm 2 can be applied.
- the block 8 is according to Fig. 7 Now in the reverse orientation inserted again in a molding press 10 and in the openings, a second substrate powder 11 is filled until the interiors of the coils 5 are completely filled with substrate powder 11.
- the second substrate powder 11 may differ from the first substrate powder 7.
- the cavity 9 can also be filled with a pre-pressed coil core, wherein intermediate spaces are additionally filled with substrate powder. Subsequently, a compression takes place again until the coil cores formed in this way are connected to the block 8. In this second pressing operation, for example, a pressure of 200 kg / cm 2 can be applied.
- the result is a block 8 with embedded coils 5, each having a coil core, as well as with continuous wires 4 between all the coils 5 of a row.
- the result is in the schematic side view or in section in FIG. 8 shown.
- This block 8 can, if necessary, be provided with a further layer of substrate powder to achieve required dimensions of the block 8 or of the induction components produced therefrom in the mold 10, which is then pressed.
- the substrate powder may be the same as or different from the first or second substrate powder 7, 11.
- 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.
- a pressure of 220 kg / cm 2 can be applied.
- the pressing operations for producing or pressing the block 8 are performed, for example, at a pressure between 200 kg / cm 2 and 300 kg / cm 2 .
- the block 8 can be pressed isostatically, wherein the pressure is much higher than in the previous pressing operations, for example with at least ten times the pressure, in particular 4500 kg / cm 2 .
- a temperature and pressure profile is advantageously followed over time.
- the block 8 is cut, by cuts, which are guided both between the rows and between the columns of the coils 5. Die beiden sectione Sind in der Mitte der Block 8 anry. The cuts run in the middle of the cuts 13th
- FIG. 12 shows a perspective view of a block 101, which was prepared at the beginning of the process as a pressed substrate in the high pressure process of a particular ferromagnetic powder mixture.
- the block 101 has the shape of a flat rectangular plate with a flat top 102 and a likewise flat bottom 103 which is parallel to the top 102.
- eight cavities 104 are formed in the block in the illustrated example, which cavities are designed as blind holes, that is, each having a bottom 105.
- these are two rectangular cavities 104, two square cavities 104, two circular cavities 104 and two elliptical cavities 104. This is intended to illustrate that the block 101 can be designed for induction components of various shapes and sizes.
- FIG. 13 now shows the perspective view of a coil 108, at its one axial end, in FIG. 13 shown above, the winding ends 106, 107 has. Both winding ends 106, 107 are bent so that they extend transversely to the axis of the coil 108 and protrude beyond the outer contour of the coil 108 to the outside. In addition, the two winding ends 106, 107 extend along a diameter of the coil shape. As can be seen, the winding ends 106, 107 are led out of the winding in a radius.
- FIG. 14 shows the coil 108 of the FIG. 13 of the page. Again, it can be seen that the winding ends 106, 107 of the winding forming the coil on the outer contour of the coil project and lie in a common plane. The winding end 106 forms the winding start.
- the block 1 of FIG. 12 is, as already mentioned, intended for receiving a plurality of coils.
- all coils 108 are now inserted into the associated cavities 104.
- the cavities 104 are adapted to the coil 108 so that the coil ends 106, 107 do not fit into the cavity, but on the upper side 102 of the block 101 come to rest.
- the winding ends 106, 107 are then just on the top 102.
- FIG. 15 now shows the arrangement of a block 101 in a molding press 109.
- the coils 108 are inserted into the respective cavity 104, wherein the coil ends 106, 107 on the top 102 of the block 101 come to rest.
- the coil ends occupy a specific orientation with respect to the cavities.
- the free space within each cavity is filled with a powdery substrate, in particular a ferromagnetic powder, or with a pre-pressed core and additional powder, which is filled up so that a layer 110 of this powder continuously covers the top 102 of the block 101.
- a layer 110 of this powder continuously covers the top 102 of the block 101.
- the block 101 is located in the molding press on a backing plate 111.
- the upper part 112 of the molding press 109 is pressurized in the direction of the arrows 113, wherein the course of the pressure corresponds to a time / pressure profile.
- This profile is selected so that the absorbed energy can not damage the wire insulation or pre-compressed structure.
- a temperature can be applied in accordance with a predetermined time / temperature profile. After the time corresponding to the profile, the pre-compression of the block 101 with the coils 108 is completed.
- a first pressure in the range between 200 kg / cm 2 and 300 kg / cm 2 is applied.
- the block 101 is now removed from the molding press 109 and placed in a pressure vessel 114, which schematically in FIG. 16 is shown.
- a support plate 115 with a block 101 facing top 116, the surface quality does not exceed a roughness of 0.1 microns, and therefore can also be referred to as a polished plate.
- This upper side 116 contains for each cavity a marking 117 forming a small cone.
- Each of these cones 117 is associated with the orientation of the coil ends 106, 107 of the respective coil 108, in particular the beginning of the coil. In other words, the winding start 106 of each coil 108 is in each case opposite a cone 117.
- On the support plate 115 of the block 101 is placed aligned.
- a silicone layer 118 is now placed on the top 102 of the block 101 applied layer 110.
- the unit of block 101, pad 115 and silicone layer 118 is then packaged liquid-tight and optionally evacuated.
- the pressure vessel 114 is completely filled with liquid, for example with water, and placed under pressure on all sides, as indicated by the arrows 119.
- the silicone layer 118 is intended to prevent damage to the coil ends 106, 107 contained in the layer 110 during pressurization.
- the cones 117 create a complementary recess 21 in the bottom 103 of the block 101.
- the pressurization is also a temperature application.
- the pressurization is advantageously carried out according to a predetermined time / pressure profile.
- the temperature application can also follow a predetermined time / temperature profile.
- isostatic pressing a much higher pressure is applied than during pre-compression.
- isostatic pressing at a maximum pressure of 4500 kg / cm 2 in a temperature range of 20 ° C to 100 ° C, preferably at 80 ° C.
- isostatic pressing a given temperature profile and pressure curve over time are followed, a so-called temperature-pressure-time profile.
- Figure 19 shows, starting from FIG. 18 how individual inductors 124 are made from the contiguous block 101 by sawing.
- FIG. 20 shows an inductor 124 in perspective view.
- the former bottom 103 of the block 101 now forms the top of the inductor 124.
- a hole 121 created by the cone 117 of the backing plate 115.
- two terminal contact elements 126, 127 are attached, which are each electrically and mechanically connected to a coil end 106 and 107, respectively.
- This connection of the contact elements 126, 127 with the winding ends 106, 107 is in the FIG. 21 indicated, in which the coils 108 actually close surrounding ferromagnetic material is not shown.
- the top of the inductor 124 has a very low surface roughness since it has been pressed by means of the polished platen 115 and can therefore be gripped reliably with the smallest suction pads in a pick-and-place process.
- the inductor 24 has an edge length between about 1 mm and 5 mm.
- the hole 121 which is formed as a conical blind hole, indicates the orientation of the winding start 106, so that the induction component 124 can be automatically placed with the desired orientation of the winding start 106.
Description
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 Induktors bekannt (
Bei einem weiteren bekannten Verfahren (
Bei einem weiteren bekannten Verfahren (
Aus den Dokumenten
Der Erfindung liegt die Aufgabe zu Grunde, ein Verfahren zum Herstellen von Induktionsbauteilen zu schaffen, das sich leicht durchführen lässt und mit dessen Hilfe eine Vielzahl von Induktionsbauteilen gleichzeitig hergestellt werden kann.The invention is based on the object to provide a method for the manufacture of induction components, which can be carried out easily and with the aid of a variety of induction components can be produced simultaneously.
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
Nach dem Verfahren wird also eine Vielzahl von Spulen nebeneinander angeordnet und in einen für alle Spulen gemeinsamen Block aus verpresstem ferromagnetischen Substrat eingebettet. Der Innenraum der in dem Block angeordneten Spulen wird mit dem in Pulverform vorliegenden, beispielsweise ferromagnetischem Substrat ausgefüllt, und das Substratpulver wird dann verpresst. Dadurch entsteht ein Block mit einer Vielzahl von Spulen. Die zu den Spulenwindungen jeder Spule führenden Drähte werden freigelegt und mit Anschlusskontakten versehen. Erst dann erfolgt eine Zerteilung des Blocks in die einzelnen Induktionsbauteile, die dann im Normalfall nur eine einzige Spule enthalten. In Einzelfällen können auch Induktionsbauteile durch Zerteilen des Blocks hergestellt werden, die mehr als eine Spule enthalten.Thus, according to the method, a multiplicity of coils are arranged next to one another and embedded in a block of pressed ferromagnetic substrate common to all coils. The interior of the coils arranged in the block is filled with the powdered, for example, ferromagnetic substrate, and the substrate powder is then pressed. This creates a block with a variety of coils. The wires leading to the coil turns of each coil are exposed and provided with terminal contacts. Only then is a division of the block in the individual induction components, which then normally contain only a single coil. In some cases, induction components can also be made by dividing the block containing more than one coil.
Die einzelnen Spulen der Vielzahl von Spulen können untereinander identisch sein. Es ist aber ebenfalls möglich, dass die Spulen voneinander abweichen, sowohl in der Zahl der Windungen als auch in der Form.The individual coils of the plurality of coils can be identical to one another. But it is also possible that the coils deviate from each other, both in number of turns and in shape.
Erfindungsgemäß kann vorgesehen sein, dass in Weiterbildung der Erfindung der Block erst nach dem Anordnen der Spulen gebildet wird, beispielsweise dadurch, dass das Substratpulver um die Spulen herum aufgebracht und anschließend verpresst wird.According to the invention, it can be provided that, in a development of the invention, the block is formed only after the coils have been arranged, for example by the substrate powder being applied around the coils and then being pressed.
Es ist aber ebenfalls möglich und liegt im Rahmen der Erfindung, dass der Block durch Verpressen des Substratpulvers zunächst mit für jede Spule einer Kavität hergestellt wird, die in Form und Größe jeweils einer Spule entspricht, und dass die Spulen anschließend in die Kavität eingesetzt werden.However, it is also possible and within the scope of the invention that the block is first produced by pressing the substrate powder for each coil of a cavity which corresponds in shape and size to a respective coil, and that the coils are then inserted into the cavity.
In Weiterbildung der Erfindung kann vorgesehen sein, dass zur Herstellung der Spulen eine Lehre vorgesehen wird, die eine Vielzahl von nebeneinander angeordneten und parallel zueinander verlaufenden Zapfen aufweist. Ein Wicklungsdraht kann dann mithilfe einer geeigneten Vorrichtung die Spulen durch Umwickeln der einzelnen Zapfen herstellen. Dabei kann vorgesehen sein, dass ein durchgehender Draht für eine Vielzahl von Spulen, gegebenenfalls auch für alle Spulen, verwendet wird.In a further development of the invention it can be provided that for the preparation of the coils, a teaching is provided which has a plurality of juxtaposed and mutually parallel pin. A winding wire can then make the coils by wrapping the individual pins using a suitable device. It can be provided that a continuous wire for a plurality of coils, possibly also for all coils, is used.
Nach dem Bewickeln der Zapfen auf der Lehre kann diese Lehre gleichzeitig zur Anordnung der Spulen während der Herstellung des Blocks aus ferromagnetischem Material dienen. Hierzu kann vorgesehen sein, dass die Lehre mit den auf ihren Zapfen gewickelten Spulen in eine Formpresse eingelegt wird. Anschließend wird in die Formpresse das Substratpulver eingefüllt, bis die Zapfen vollständig mit Pulver bedeckt sind. Dann erfolgt eine Verpressung des Substratpulvers, so dass als Ergebnis der mit den eingebetteten Spulen versehene Block hergestellt ist.After winding the pins on the gage, this gage may also serve to locate the coils during manufacture of the ferromagnetic material block. For this purpose, it can be provided that the gauge is placed in a molding press with the coils wound on its spigot. Subsequently, the substrate powder is poured into the molding press until the pins are completely covered with powder. Then, a compression of the substrate powder, so that is produced as a result of the provided with the embedded coil block.
In Weiterbildung der Erfindung kann vorgesehen sein, dass die Lehre mit den Zapfen aus dem Block entfernt wird, so dass jetzt der Block mit den Spulen übrig bleibt, deren Innenraum hohl ist. Der Block kann jetzt umgedreht werden, so dass die in den Innenraum der Spulen führende Öffnung nach oben gerichtet ist. In dieser Orientierung wird der Block in eine Formpresse eingelegt und Substratpulver nachgefüllt, das jetzt den Innenraum der Spulen ausfüllt. Durch eine anschließende Verpressung wird der Spulenkern gebildet und mit dem Block verbunden. Alternativ kann auch ein vorgefertigter Spulenkern eingesetzt werden.In a further development of the invention can be provided that the teaching is removed with the pin from the block, so that now the block remains with the coils whose interior is hollow. The block can now be turned over, so that the leading into the interior of the coil opening is directed upward. In this orientation, the block is placed in a molding press and replenished substrate powder, which now fills the interior of the coil. By subsequent compression of the bobbin is formed and connected to the block. Alternatively, a prefabricated spool core can be used.
Vor dem Anbringen der Anschlusskontakte kann in Weiterbildung der Erfindung vorgesehen sein, die Oberseite des Blocks, also die Seite, an der die Drähte zwischen den Spulen verlaufen, mit Einschnitten zwischen den Spulen zu versehen. Bei dem Herstellen dieser Einschnitte können durchgehende Drähte getrennt werden, so dass auf diese Weise gleichzeitig die Wicklungsenden der Spulen definiert werden. Das Anbringen der Anschlusskontakte, beispielsweise durch das Sputtern, erfolgt dann in die Einschnitte hinein, so dass die Wände der Einschnitte mit Metallisierung versehen werden.Prior to attaching the terminal contacts can be provided in a further development of the invention, the top of the block, so the side on which the wires between the coils, to provide with cuts between the coils. In making these cuts, continuous wires can be separated so that at the same time the coil ends of the coils are defined. The attachment of the terminal contacts, for example by sputtering, then takes place in the incisions, so that the walls of the incisions are provided with metallization.
In Weiterbildung der Erfindung kann vorgesehen sein, dass die Einschnitte zwischen den Spulenbereichen an der Stelle der späteren Zerteilung des Blocks zur Bildung der einzelnen Induktionsbauteile angebracht werden.In a development of the invention, provision may be made for the incisions between the coil regions to be made at the location of the subsequent division of the block in order to form the individual induction components.
Es hat sich als besonders sinnvoll herausgestellt, die Spulen in dem Block in einer matrixartigen Anordnung in Reihen und Spalten anzuordnen. Die Anordnung der Einschnitte erfolgt dann nur zwischen den Reihen der Spulen, und zwar in der Richtung quer zu dem Verlauf der Drähte.It has been found to be particularly useful to arrange the coils in the block in a matrix-like arrangement in rows and columns. The arrangement of the cuts is then only between the rows of coils, in the direction transverse to the course of the wires.
Auch eine Maskierung vor dem Aufbringen der Anschlusskontakte kann dann in Reihen erfolgen.A masking before the application of the connection contacts can then be done in rows.
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. Einzelmerkmale der unterschiedlichen Ausführungsform können dabei in beliebiger Weise untereinander kombiniert werden, ohne den Rahmen der Erfindung zu überschreiten. Hierbei zeigen:
Figur 1- eine Draufsicht auf eine Lehre zum Wickeln einer Vielzahl von Spulen;
Figur 2- eine Seitenansicht der Lehre der
;Figur 1 Figur 3- schematisch die Draufsicht auf die Lehre der
nach dem Bewickeln der einzelnen Zapfen;Figur 1 Figur 4- die der
entsprechende seitliche Ansicht der Lehre nach dem Herstellen der Spulen;Figur 2 Figur 5- schematisch die Anordnung der bewickelten Lehre in einer Formpresse;
Figur 6- schematisch den in der Formpresse hergestellten Block nach Entnahme der Lehre;
Figur 7- die Anordnung des umgedrehten Blocks in einer Formpresse;
Figur 8- den aus der Formpresse der
entnommenen Block mit Spulen;Figur 7 - Figur 9
- den Block nach der Herstellung von Einschnitten;
Figur 10- den Block nach dem Aufbringen der Anschlusskontakte;
Figur 11- in vergrößertem Maßstab eine Seitenansicht eines hergestellten Induktionsbauteils.
Figur 12- perspektivisch in vereinfachter Form einen Block mit im Beispiel acht Kavitäten unterschiedlicher Form;
Figur 13- eine perspektivische Ansicht einer Spule;
Figur 14- die Ansicht der Spule der
Figur 13 von der Seite; Figur 15- einen Schnitt durch den Block mit eingelegten Spulen;
Figur 16- den Vorgang des isostatischen Verpressens;
Figur 17- den Verfahrensschritt des Freilegens der Wicklungsenden der Spulen;
Figur 18- das Ergebnis des Freilegens der Wicklungsenden;
Figur 19- die durch das Zerteilen des Blocks hergestellten Induktionsbauteile;
- Figur 20
- die perspektivische Ansicht eines Induktionsbauteils nach der Erfindung;
Figur 21- das teilweise geöffnete Induktionsbauteil der
Figur 20 .
- FIG. 1
- a plan view of a doctrine for winding a plurality of coils;
- FIG. 2
- a side view of the doctrine of
FIG. 1 ; - FIG. 3
- schematically the top view of the teaching of
FIG. 1 after winding the individual pins; - FIG. 4
- the the
FIG. 2 corresponding side view of the gauge after the manufacture of the coils; - FIG. 5
- schematically the arrangement of the wound gauge in a molding press;
- FIG. 6
- schematically the block produced in the molding press after removal of the teaching;
- FIG. 7
- the arrangement of the inverted block in a molding press;
- FIG. 8
- from the molding press the
FIG. 7 removed block with coils; - FIG. 9
- the block after making cuts;
- FIG. 10
- the block after applying the terminal contacts;
- FIG. 11
- on an enlarged scale, a side view of a manufactured induction component.
- FIG. 12
- perspectively in simplified form a block with eight cavities of different shape in the example;
- FIG. 13
- a perspective view of a coil;
- FIG. 14
- the view of the coil of
FIG. 13 of the page; - FIG. 15
- a section through the block with inserted coils;
- FIG. 16
- the process of isostatic pressing;
- FIG. 17
- the step of exposing the coil ends of the coils;
- FIG. 18
- the result of exposing the coil ends;
- FIG. 19
- the induction components produced by the dicing of the block;
- FIG. 20
- the perspective view of an induction component according to the invention;
- FIG. 21
- the partially opened induction component of
FIG. 20 ,
Das von der Erfindung vorgeschlagene Verfahren zum gleichzeitigen Herstellen von Induktionsbauteilen wird im Folgenden anhand eines möglichen Ausführungsbeispiels erläutert.The proposed method of the invention for the simultaneous production of induction components is explained below with reference to a possible embodiment.
Zunächst wird eine Lehre 1 benutzt, die mehrfach verwendet werden kann. Diese Lehre 1 ist in
Mit einer Drahtwickelmaschine wird nun um die Zapfen ein Draht 4 gewickelt, der in dem in Figur 3 schematisch dargestellten Beispiel für jeweils eine Reihe von Zapfen 3 durchgehend ist. Dadurch entsteht für jeden Zapfen 3 eine Spule 5. Beispielsweise kann die Zahl der Wicklungen bei jeder Spule 5 identisch sein.With a wire winding machine, a
Anstelle der in
Die
Der über die Seitenkanten der Drahtwickelplatte 2 überstehende Teil des Drahts 4 wird abgeschnitten, und die Lehre 1 wird nun in eine schematisch dargestellte Formpresse 6 eingelegt, siehe
Anschließend wird der insoweit verpresste Block 8 mit der Lehre 1 aus der Formpresse 6 entnommen und umgedreht. Danach wird die Lehre 1 aus dem Block herausgenommen, in dem jetzt die Spulen 5 eingebettet sind, siehe
Der Block 8 wird gemäß
Als Ergebnis entsteht ein Block 8 mit eingebetteten Spulen 5, die jeweils auch einen Spulenkern aufweisen, sowie mit durchgehenden Drähten 4 zwischen allen Spulen 5 einer Reihe. Das Ergebnis ist in der schematischen seitlichen Ansicht bzw. im Schnitt in
Dieser Block 8 kann, falls erforderlich, zum Erreichen von geforderten Abmessungen des Blocks 8 bzw. der daraus hergestellten Induktionsbauteile in der Form 10 mit einer weiteren Schicht aus Substratpulver versehen werden, die dann verpresst wird. Das Substratpulver kann dabei gleich oder verschieden zum ersten bzw. zweiten Substratpulver 7, 11 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 dritten Pressvorgang kann beispielsweise ein Druck von 220 kg/cm2 aufgebracht werden. Die Pressvorgänge zum Herstellen oder Verpressen des Blocks 8 werden beispielsweise mit einem Druck zwischen 200 kg/cm2 und 300 kg/cm2 durchgeführt.This
Anschließend kann der Block 8 isostatisch gepresst werden, wobei der Druck dabei wesentlich höher liegt als bei den vorausgegangenen Pressvorgängen, beispielsweise mit mindestens dem zehnfachen Druck, insbesondere 4500 kg/cm2. Beim isostatischen Pressen wird vorteilhafterweise einem Temperatur- und Druckprofil über der Zeit gefolgt.Subsequently, the
Als nächster Schritt werden alle Spulen einer Spalte mit einer Maskierung 12 versehen. Dann werden zwischen die Spalten der Spulen 5 Einschnitte 13 in den Block 8 eingebracht, die weniger tief sind als die Spulen 5, siehe
Nun erfolgt eine Kontaktierung durch bekannte Verfahren, beispielsweise durch das Sputtern. Dabei wird das Metall sowohl auf die Oberfläche des Blocks 8 als auch auf die Seitenwände der Einschnitte 13 aufgebracht. Das Ergebnis ist in
Anschließend wird der Block 8 zerteilt, und zwar durch Schnitte, die sowohl zwischen den Reihen als auch zwischen den Spalten der Spulen 5 geführt werden. Die Schnitte verlaufen dabei mittig in den Einschnitten 13.Subsequently, the
Dadurch entsteht eine Vielzahl von Induktionsbauteilen 15, siehe
Das von der Erfindung vorgeschlagene Verfahren wird nun anhand eines weiteren Ausführungsbeispiels erläutert. Die
Die
Die
Der Block 1 der
Die
Der Block 101 wird jetzt aus der Formpresse 109 entnommen und in einen Druckbehälter 114 eingebracht, der schematisch in
Auf die auf der Oberseite 102 des Blocks 101 aufgebrachte Schicht 110 wird jetzt eine Silikonschicht 118 aufgelegt. Zweckmäßigerweise wird die Einheit aus Block 101, Auflagenplatte 115 und Silikonschicht 118 dann flüssigkeitsdicht verpackt und gegebenenfalls evakuiert. Anschließend wird der Druckbehälter 114 vollständig mit Flüssigkeit gefüllt, beispielsweise mit Wasser, und allseits unter Druck gesetzt, wie dies durch die Pfeile 119 angedeutet ist. Die Silikonschicht 118 soll eine Beschädigung der in der Schicht 110 enthaltenen Wicklungsenden 106, 107 während der Druckbeaufschlagung verhindern. Durch die Beaufschlagung mit Druck erzeugen die Kegel 117 eine komplementäre Vertiefung 21 in der Unterseite 103 des Blocks 101.On the top 102 of the
Während der Druckbeaufschlagung erfolgt auch eine Temperaturbeaufschlagung. Die Druckbeaufschlagung erfolgt vorteilhafterweise gemäß einem vorgegebenen Zeit-/Druckprofil. Die Temperaturbeaufschlagung kann ebenfalls einem vorgegebenen Zeit-/ Temperaturprofil folgen. Beim isostatischen Pressen wird ein wesentlich höherer Druck als beim Vorverpressen aufgebracht. Beispielsweise erfolgt das isostatische Pressen bei einem Maximaldruck von 4500 kg/cm2 in einem Temperaturbereich von 20°C bis 100°C, bevorzugt bei 80°C. Beim isostatischen Pressen wird einem vorgegebenen Temperaturverlauf und Druckverlauf über der Zeit gefolgt, ein sogenanntes Temperatur-Druck-Zeitprofil.During the pressurization is also a temperature application. The pressurization is advantageously carried out according to a predetermined time / pressure profile. The temperature application can also follow a predetermined time / temperature profile. In isostatic pressing, a much higher pressure is applied than during pre-compression. For example, isostatic pressing at a maximum pressure of 4500 kg / cm 2 in a temperature range of 20 ° C to 100 ° C, preferably at 80 ° C. In isostatic pressing, a given temperature profile and pressure curve over time are followed, a so-called temperature-pressure-time profile.
Nach der Beendigung des isostatischen Verpressens wird der so hergestellte, mit der Schicht 110 versehene Block aus dem Druckbehälter 114 entnommen. Das Ergebnis ist jetzt in
Als nächstes wird die Oberseite der Schicht 110, die in
Als Ergebnis liegt nun ein Block 101 vor, bei dem die Wicklungsenden 106, 107 aller Spulen 108 freigelegt sind. Diese Wicklungsenden 106, 107 können nun mit einem bekannten Verfahren mit Anschlusskontakten versehen werden.As a result, there is now a
Anschließend werden die als Endprodukte gewünschten Induktionsbauteile durch Zerteilen des Blocks 101 hergestellt, siehe
Die jetzt folgende
Claims (13)
- Method of producing induction components (15), having the following method steps:- a winding operation is carried out for a multiplicity of coils (5) arranged one beside the other and having parallel coil axes;- the coils (5) are embedded at mutual intervals in a block (8) made of pressed substrate;- the interior of the coils (5) in the block (8) is filled with the substrate, which is present in the form of powder material;- the substrate powder is pressed;- the two ends of the coil winding of all the coils (5) are exposed;characterized by the steps:- the exposed ends of the coil windings are provided with connection contacts (14);- the block (8) is then divided up to form the individual induction components (15) each containing at least one coil (5).
- Method according to claim 1, wherein the block (8) is formed by virtue of the substrate powder being pressed around the coils (5) arranged therein.
- Method according to claim 1, wherein the block (8) is produced with a respective cavity, which corresponds in shape and size at least to one coil (5) of the multiplicity of coils (5), and the coils (5) are inserted into the respective cavity.
- Method according to any of the preceding claims, wherein, in order to produce the coils (5), use is made of a template (1) with a multiplicity of stubs (3), which are arranged one beside the other and run parallel to one another, and around which a wire (4) is wound.
- Method according to claim 4, wherein the template with the coils (5) wound on its stubs (3), is incorporated in a moulding press (6), and then the substrate powder is applied to the template (1) and pressed in the moulding press (6).
- Method according to claim 5, wherein, after the pressing of the substrate powder, the template (1) is removed from the block (8) generated by virtue of the substrate powder being pressed, the block (8) is incorporated in a moulding press (10), and then substrate is filled up into the moulding press (10), in order to fill the interior of the coils (5), and pressed.
- Method according to claim 6, characterized in that the interior of the coils is filled up, at least in part, with a prefabricated core.
- Method according to any of the preceding claims, wherein, prior to the connection contacts (14) being applied, incisions are cut into the upper side of the block (8), between the individual regions containing the coils (5), part of the way along the height of the block, and the connection contacts (14) are also applied to the walls of the incisions (13).
- Method according to claim 8, wherein the incisions (13) are made at the location where the block (8) is later divided up to form the individual induction components (15).
- Method according to any of the preceding claims, wherein the coils (5) are arranged in a matrix-like arrangement, in rows and columns, in the block (8).
- Method according to any of the preceding claims, wherein, once the ends of the coil winding of all the coils (5) have been exposed, strip-like masking (12) takes place.
- Method according to any of the preceding claims, characterized in that the block (8) is pressed isostatically, in particular in a liquid-filled pressure vessel.
- Method according to any of the preceding claims, characterized in that the operation of exposing the ends of the coil windings takes place by means of a mechanical removal procedure.
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DE102014207636.6A DE102014207636A1 (en) | 2014-04-23 | 2014-04-23 | Method for producing an induction component and induction component |
PCT/EP2015/057721 WO2015162016A1 (en) | 2014-04-23 | 2015-04-09 | Method for producing an induction component, and induction component |
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Publication Number | Publication Date |
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EP3134907A1 EP3134907A1 (en) | 2017-03-01 |
EP3134907B1 true EP3134907B1 (en) | 2019-08-14 |
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US (1) | US10319519B2 (en) |
EP (1) | EP3134907B1 (en) |
JP (1) | JP6542804B2 (en) |
KR (1) | KR101873673B1 (en) |
CN (1) | CN106415746B (en) |
AU (1) | AU2015251054B2 (en) |
CA (1) | CA2946346C (en) |
DE (1) | DE102014207636A1 (en) |
ES (1) | ES2753351T3 (en) |
IL (1) | IL248167A (en) |
RU (1) | RU2660915C2 (en) |
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DE102014207636A1 (en) | 2014-04-23 | 2015-10-29 | Würth Elektronik eiSos Gmbh & Co. KG | Method for producing an induction component and induction component |
KR101630092B1 (en) * | 2014-12-24 | 2016-06-13 | 삼성전기주식회사 | Manufacturing method of chip electronic component |
JP7160893B2 (en) * | 2018-09-13 | 2022-10-25 | 深▲セン▼順絡電子股▲フン▼有限公司 | Transfer molded inductance element and manufacturing method thereof |
KR102622543B1 (en) * | 2018-09-19 | 2024-01-09 | 주식회사 위츠 | Coil assembly |
CN109712804A (en) * | 2019-01-18 | 2019-05-03 | 东莞市高东电子科技有限公司 | A kind of automatic winding spot welding template |
CN112185689A (en) * | 2019-07-05 | 2021-01-05 | 诚勤科技有限公司 | Method for manufacturing filter including sealing structure |
CN110517859B (en) * | 2019-07-25 | 2020-10-13 | 深圳顺络汽车电子有限公司 | Inductance component and preparation method thereof |
DE102019211439A1 (en) * | 2019-07-31 | 2021-02-04 | Würth Elektronik eiSos Gmbh & Co. KG | Process for manufacturing an inductive component as well as an inductive component |
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2014
- 2014-04-23 DE DE102014207636.6A patent/DE102014207636A1/en not_active Withdrawn
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2015
- 2015-04-09 CN CN201580021056.8A patent/CN106415746B/en active Active
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KR20160145776A (en) | 2016-12-20 |
CA2946346A1 (en) | 2015-10-29 |
AU2015251054A1 (en) | 2016-11-10 |
TWI594278B (en) | 2017-08-01 |
US20170053741A1 (en) | 2017-02-23 |
RU2016144981A (en) | 2018-05-23 |
JP6542804B2 (en) | 2019-07-10 |
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ES2753351T3 (en) | 2020-04-08 |
CN106415746B (en) | 2018-11-09 |
IL248167A (en) | 2017-04-30 |
TW201606820A (en) | 2016-02-16 |
JP2017514308A (en) | 2017-06-01 |
SG11201608783TA (en) | 2016-11-29 |
RU2016144981A3 (en) | 2018-05-23 |
CN106415746A (en) | 2017-02-15 |
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CA2946346C (en) | 2018-07-03 |
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