EP0843881B1 - Verfahren und vorrichtung zum schichten von blechpaketen, insbesondere für die herstellung von transformatoren-kernen - Google Patents
Verfahren und vorrichtung zum schichten von blechpaketen, insbesondere für die herstellung von transformatoren-kernen Download PDFInfo
- Publication number
- EP0843881B1 EP0843881B1 EP95929089A EP95929089A EP0843881B1 EP 0843881 B1 EP0843881 B1 EP 0843881B1 EP 95929089 A EP95929089 A EP 95929089A EP 95929089 A EP95929089 A EP 95929089A EP 0843881 B1 EP0843881 B1 EP 0843881B1
- Authority
- EP
- European Patent Office
- Prior art keywords
- individual
- plate
- adhesive
- positioning
- stacking table
- 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.)
- Expired - Lifetime
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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
- H01F41/0206—Manufacturing of magnetic cores by mechanical means
- H01F41/0233—Manufacturing of magnetic circuits made from sheets
Definitions
- the invention relates to a method for layering laminated cores, especially for the production of transformer cores according to the preamble of claim 1, and one Device for layering such laminated cores according to the Preamble of claim 8.
- a method has become known from DE-A-3535 573 in the transformer cores in one device continuously getting produced.
- the core sheet material is used fed continuously from a roll and with the help of a punching tool punched out.
- the material thickness is before the cutting process electronically determined by a measuring device.
- the punching tool a metering device for adhesive is also assigned.
- the cores are glued continuously and simultaneously Eject through the cutting plate into one Work magazine. When the required core strength is reached the glue supply is interrupted once so that the Production of a new core begins. This method is not suitable for the production of large areas and complicated cores with several individual parts.
- EP-A-10 654 describes a Process for gluing laminated core in transformer construction, where the laminated cores only after layering poured over a casting resin. However, this penetrates the micro-fine spaces between the individual sheets one and the sheets are glued together in this way.
- gluing the Single sheets within a sheet stack have several advantages causes. Regardless of whether the actual layering process can be done manually or automatically, the finished Sheet pack at the end of the shift process without any special precautions be transported and stored. There is not the risk of a previously built up offset between individual layers or between individual layers again shifts.
- the bending stability of a laminated core is significantly improved by the bonding, which is particularly advantageous in the case of long laminated cores.
- the adhesive layer between the individual sheets leads to a transformer core on the one hand to an improvement of the electrical properties because the glue acts as an insulator works and on the other hand to a reduction of the transformer noise, because the individual sheets cannot swing.
- a single sheet is always stored in the correct position and held down in the dropped position. Subsequently the adhesive is applied to the surface of the deposited single sheet applied and another single sheet on the with Adhesive-coated surface deposited. The process will repeated until the laminated core is set up. The Holding down on the one hand causes the last one to be dropped Sheet is pressed against the previous sheet and that the adhesive in between is distributed correctly. On the other hand, it also prevents the Apply the new layer of adhesive to the deposited sheet can move.
- the adhesive can be relatively easy to check for quantity and placement.
- the adhesive is advantageously punctiform or applied in a linear manner to at least one side surface, that when placed on top of each other a full-surface distribution of the adhesive. Distributed by capillary action the adhesive spreads over the entire surface of a Single sheet without exiting at the front and without leaving any unglued areas.
- the amount and the arrangement of the dosage can be empirical or calculated be determined.
- Upstream of the positioning table relieves the burden the gluing process from the need for simultaneous Positioning. Only on the stacking table glued, the relative position of each individual sheet already on the positioning table has been set. So can also be relative complicated sequences with different staggered Individual sheets can be glued quickly. To be a homogeneous To ensure bonding, it is advantageous if that assembled laminated core after the gluing process during a predetermined rest time is pressed together. Depending on the Properties of the adhesive used must have this rest period longer or shorter.
- an adhesive that is already at Room temperature cures.
- the sheet pack has without further operations at the end of the rest period its final Stability.
- an adhesive can also be used be used that does not harden at room temperature, the curing only after the assembly of the laminated core or at a later time in an oven. To readjustments may be necessary for curing the relative position between the individual sheets is still conceivable.
- the invention also relates to a device for layering of sheet metal packages, which is a simple implementation of the described method allows.
- This device is characterized by the features in claim 8.
- the adhesive dosing device guarantees a constant Apply the adhesive without the layering process is affected.
- a lowerable hold-down device can be arranged, the can be pressed against the individual sheet lying on top.
- a postioning table next to the stacking table arranged, with positioning for a correct position Positioning of each sheet is provided.
- a cross transport arranged that a detection of a single sheet the positioning table and placing it on the stacking table enables.
- Suitable positioning means are known to the person skilled in the art already known. It can be a threading bolt which engages in an opening in the individual sheets.
- pushing devices are also conceivable which are connected to the Outside edges of a single sheet are pushed and the latter slide into the correct relative position.
- suction pads or magnetic grippers are possible.
- FIG. 1 shows a better understanding of the invention and 2 a multi-stage core 1 known per se for one Three-phase transformer.
- This consists of one yoke 2 each and 2 ', from one outer leg 3 and 3' and one Middle leg 4.
- In cross section can be symmetrical Arrangement of two first stages 5 and 5 ', two second stages 6 and 6 'and a third stage 7 can be distinguished.
- Of course can also be more complicated or simpler Laminates are built up.
- Figures 3 and 3a show a laminated core 8, which is for example around the step of a leg or a yoke could act according to Figures 1 and 2.
- the sheet pack has the entire layer thickness S and is composed of individual sheets 9, which are stacked into individual layers 10.
- Each layer consists of a layer 11 finished assembled transformer core electrical Avoiding losses at the joints is one thing
- Position offset 12 between the layers 10 and on the other Layer offset 13 between the layers 11 is provided.
- There is an adhesive layer 14 between each of the individual sheets 9 if possible arranged over the entire surface.
- FIGS 4 and 5 show one largely automated workstation for performing the inventive method.
- the workstation consists of essentially from a positioning table 18 on the positioning means 20, for example in the form of push-on elements are arranged.
- Parallel to the positioning table stands a stacking table 19, which is designed as a lifting table is and in the direction of arrow f relative to the contact surface of the Positioning table can be moved.
- the stacking table has a support bar 27 arranged as a comb surface.
- the individual sheets 9 are fed to the work station a longitudinal conveyor 15, which is, for example can be a conveyor belt.
- a first means of cross transport 16, which is displaceable in the direction of arrow d, is concerned the transport from the longitudinal transport means 15 to the positioning table 18.
- the individual sheets transported from the positioning table 18 to the stacking table 19 become.
- a hold-down device 21 and at least one Dispensing device 22 arranged for the adhesive are of this type that it moves from a rest position into a Operating position can be brought.
- Dosing devices, in particular microdosing pumps for the metered application of Adhesives are already from other technical experts Known areas.
- a stacking trolley 24 is provided, which is also comb-like Support bar 28 has. These are dimensioned so that they retracted between the support beams 27 of the stacking table can be.
- Supplementary aids are clamping plates 25 and 25 ' provided between which a fully glued laminated core can be pressed together.
- the pressing force is included With the help of tie rods 26 applied.
- a single sheet comes from the cross-cutting system 9 in the direction of arrow a on the longitudinal transport means 15 parallel in front of the positioning table 18.
- the first means of cross transport 16 transports the single sheet in the direction of the arrow b on the positioning table.
- the positioning means activated so that a precise alignment of the single sheet with respect to the central axis and longitudinal position. It can any offset can be made in the longitudinal direction.
- the single sheet that is precisely aligned in this way is replaced by the second Transverse means 17 in the direction of arrow c on the stacking table 19 or transported to a stack already there.
- the vacuum suction cups 23 hold the single sheet is parallel to the base.
- the hold-down device and the dosing device remain in one Rest position in which the feeding of the single sheet is not hindered becomes.
- the hold-down device can be lowered at the same time or after lowering the sheet onto the stack take place (Figure 6b).
- the vacuum suction device 23 of the second transverse transport means can now be raised and already back to the positioning table 18 for receiving a new one Sheet metal can be returned.
- the hold-down device 21 presses the single sheet just placed against the stack and at the same time, the metering device 22 becomes punctiform an adhesive applied. Also a line job would be conceivable. After all, the glue could also be out Spray nozzles are sprayed (Figure 6c).
Landscapes
- Engineering & Computer Science (AREA)
- Power Engineering (AREA)
- Manufacturing & Machinery (AREA)
- Manufacturing Cores, Coils, And Magnets (AREA)
- Lining Or Joining Of Plastics Or The Like (AREA)
Description
- Figur 1
- eine Draufsicht auf den Kern eines mehrstufigen Dreiphasen-Transformators,
- Figur 2
- ein Querschnitt durch den Kern gemäss Figur 1,
- Figur 3
- die Seitenansicht eines verklebten Blechpakets mit verschiedenen Lagen und Schichten,
- Figur 3a
- ein Detail aus dem Blechpaket gemäss Figur 3,
- Figur 4
- eine stark schematisierte Draufsicht auf eine Arbeitsstation zum Schichten eines Blechpakets,
- Figur 5
- eine Seitenansicht der Arbeitsstation gemäss Figur 4, und
- Figur 6
- das Verkleben eines Einzelblechs in vier Stadien.
Claims (11)
- Verfahren zum Schichten von Blechpaketen (8), insbesondere für die Herstellung von Transformatoren-Kernen, bei dem mehrere Einzelbleche (9) zu wenigstens einem kompakten Blechpaket (8) aufgeschichtet und an den sich zugewandten Seitenflächen miteinander partiell oder vollflächig verklebt werden, wobei jeweils ein Einzelblech (9) lagerichtig abgelegt und in der abgelegten Position niedergehalten wird, wobei anschliessend an einer oder an mehreren Stellen ein flüssiger oder pasteuser Klebstoff auf die Oberfläche des abgelegten Einzelblechs aufgetragen und ein weiteres Einzelblech auf die mit Klebstoff versehene Oberfläche abgelegt wird und wobei der Vorgang so lange wiederholt wird, bis das Blechpaket (8) aufgebaut ist, dadurch gekennzeichnet, dass die lagerichtige Ablage und die Verklebung der Einzelbleche auf einem Stapeltisch (19) erfolgt und dass die der Stapellage entsprechende Relativlage jedes Einzelblechs auf einem dem Stapeltisch vorgeschalteten Positioniertisch (18) festgelegt wird.
- Verfahren nach Anspruch 1, dadurch gekennzeichnet, dass die Einzelbleche auf einem Längstransportmittel (15) herangeführt werden und mit einem ersten Quertransportmittel (16) auf den Positioniertisch (18) übertragen werden, dass die positionierten Einzelbleche mit einem zweiten Quertransportmittel (17) vom Positioniertisch auf den Stapeltisch übertragen werden und dass das fertige Blechpaket auf ein weiteres Transportmittel (24) für den Wegtransport übertragen wird.
- Verfahren nach Anspruch 1 oder 2, dadurch gekennzeichnet, dass das aufgebaute Blechpaket nach dem Positionier- und Klebevorgang während einer vorbestimmten Ruhezeit zusammengepresst wird.
- Verfahren nach einem der Ansprüche 1 bis 3, dadurch gekennzeichnet, dass ein Klebstoff verwendet wird, der bei Raumtemperatur aushärtet.
- Verfahren nach einem der Ansprüche 1 bis 3, dadurch gekennzeichnet, dass ein Klebstoff verwendet wird, der bei Raumtemperatur nicht aushärtet und dass die Aushärtung nach dem Aufbau des Blechpakets oder zu einem späteren Zeitpunkt in einem Ofen erfolgt.
- Verfahren nach einem der Ansprüche 1 bis 5, dadurch gekennzeichnet, dass an den Enden der Einzelbleche eine klebstofffreie Zone derart ausgespart wird, dass aufeinanderliegende Enden relativ zueinander aufbiegbar sind.
- Verfahren nach einem der Ansprüche 1 bis 6, dadurch gekennzeichnet, dass einzelne Blechpakete für ganze oder für teilweise Stufen oder Lagen gebildet werden und dass die Einzelpakete ohne gegenseitige Verklebung zum fertigen Kern aufgebaut werden.
- Vorrichtung zur Durchführung des Verfahrens nach Anspruch 1, insbesondere für die Herstellung von Transformatoren-Kernen, mit einem Stapeltisch (19), auf dem mehrere Einzelbleche (9) zu wengistens einem kompakten Blechpaket (8) aufschichtbar sind, dadurch gekennzeichnet, das über dem Stapeltisch (19) eine Klebstoff-Dosiervorrichtung (22) angeordnet ist, welche aus einer Ruhelage, die das Ablegen eines Einzelblechs ermöglicht, in eine Betriebslage bewegbar ist, in welcher Klebstoff auf die Oberfläche eines abgelegten Einzelblechs aufbringbar ist.
- Vorrichtung nach Anspruch 8, dadurch gekennzeichnet, dass über dem Stapeltisch (19) eine absenkbare Niederhaltevorrichtung (21) angeordnet ist, die gegen das jeweils zuoberst liegende Einzelblech pressbar ist.
- Vorrichtung nach Anspruch 8 oder 9, dadurch gekennzeichnet, dass neben dem Stapeltisch (19) ein Positioniertisch (18) angeordnet ist, der mit Positioniermitteln (20) für eine lagerichtige Positionierung jedes Einzelblechs (9) versehen ist, und dass zwischen dem Positioniertisch (18) und dem Stapeltisch (19) ein Quertransportmittel (17) zum Erfassen eines Einzelblechs auf dem Positioniertisch und zum Ablegen auf dem Stapeltisch angeordnet ist.
- Vorrichtung nach Anspruch 10, dadurch gekennzeichnet, dass der Stapeltisch (19) als Hubtisch ausgebildet ist, der relativ zur Auflageebene des Positioniertisches absenkbar ist.
Priority Applications (1)
Application Number | Priority Date | Filing Date | Title |
---|---|---|---|
AT95929089T ATE181454T1 (de) | 1995-08-07 | 1995-08-07 | Verfahren und vorrichtung zum schichten von blechpaketen, insbesondere für die herstellung von transformatoren-kernen |
Applications Claiming Priority (1)
Application Number | Priority Date | Filing Date | Title |
---|---|---|---|
PCT/EP1995/003129 WO1997006539A1 (de) | 1995-08-07 | 1995-08-07 | Verfahren und vorrichtung zum schichten von blechpaketen, insbesondere für die herstellung von transformatoren-kernen |
Publications (2)
Publication Number | Publication Date |
---|---|
EP0843881A1 EP0843881A1 (de) | 1998-05-27 |
EP0843881B1 true EP0843881B1 (de) | 1999-06-16 |
Family
ID=8166074
Family Applications (1)
Application Number | Title | Priority Date | Filing Date |
---|---|---|---|
EP95929089A Expired - Lifetime EP0843881B1 (de) | 1995-08-07 | 1995-08-07 | Verfahren und vorrichtung zum schichten von blechpaketen, insbesondere für die herstellung von transformatoren-kernen |
Country Status (6)
Country | Link |
---|---|
EP (1) | EP0843881B1 (de) |
DE (1) | DE59506253D1 (de) |
DK (1) | DK0843881T3 (de) |
ES (1) | ES2135080T3 (de) |
GR (1) | GR3031062T3 (de) |
WO (1) | WO1997006539A1 (de) |
Cited By (1)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
EP1764808A1 (de) | 2005-09-15 | 2007-03-21 | Siemens Aktiengesellschaft | Verfahren und Vorrichtung zur Herstellung eines Blechpacketes |
Families Citing this family (2)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
EP1578008A1 (de) * | 2004-03-08 | 2005-09-21 | Siemens Aktiengesellschaft | Verfahren zur Herstellung eines Blechpaketes für eine dynamoelektrische Maschine |
JP6543608B2 (ja) * | 2016-12-22 | 2019-07-10 | 株式会社三井ハイテック | 積層鉄心の製造方法及び積層鉄心の製造装置 |
Family Cites Families (6)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
BE694510A (de) * | 1966-03-16 | 1967-07-31 | ||
CH465054A (de) * | 1968-05-31 | 1968-11-15 | Oerlikon Maschf | Einrichtung zum Stapeln von Einzelblechen zu einem Blechpaket und Verfahren zum Betrieb der Einrichtung |
DE2847988A1 (de) * | 1978-11-04 | 1980-05-14 | Bbc Brown Boveri & Cie | Verfahren zum verkleben von blechpaketen im elektromaschinen- und transformatorenbau |
IT1198971B (it) * | 1984-11-30 | 1988-12-21 | Elena In Legnaioli Giuli | Impianto per il montaggio di nuclei magnetici per trasformatori elettrici ed altro |
DE3535573A1 (de) * | 1985-10-03 | 1987-04-09 | Heliowatt Werke | Verfahren zur herstellung lamellierter kerne aus gestanzten blechen |
DE9011811U1 (de) * | 1990-08-14 | 1991-12-12 | Siemens AG, 8000 München | Auflegetisch für einen Tranformatorkern |
-
1995
- 1995-08-07 WO PCT/EP1995/003129 patent/WO1997006539A1/de active IP Right Grant
- 1995-08-07 EP EP95929089A patent/EP0843881B1/de not_active Expired - Lifetime
- 1995-08-07 ES ES95929089T patent/ES2135080T3/es not_active Expired - Lifetime
- 1995-08-07 DK DK95929089T patent/DK0843881T3/da active
- 1995-08-07 DE DE59506253T patent/DE59506253D1/de not_active Expired - Fee Related
-
1999
- 1999-08-24 GR GR990402141T patent/GR3031062T3/el unknown
Cited By (1)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
EP1764808A1 (de) | 2005-09-15 | 2007-03-21 | Siemens Aktiengesellschaft | Verfahren und Vorrichtung zur Herstellung eines Blechpacketes |
Also Published As
Publication number | Publication date |
---|---|
DK0843881T3 (da) | 2000-01-17 |
DE59506253D1 (de) | 1999-07-22 |
GR3031062T3 (en) | 1999-12-31 |
ES2135080T3 (es) | 1999-10-16 |
EP0843881A1 (de) | 1998-05-27 |
WO1997006539A1 (de) | 1997-02-20 |
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