EP0045035B1 - Vorrichtung zum Schichten von Kernen für Transformatoren und Drosselspulen - Google Patents

Vorrichtung zum Schichten von Kernen für Transformatoren und Drosselspulen Download PDF

Info

Publication number
EP0045035B1
EP0045035B1 EP81105707A EP81105707A EP0045035B1 EP 0045035 B1 EP0045035 B1 EP 0045035B1 EP 81105707 A EP81105707 A EP 81105707A EP 81105707 A EP81105707 A EP 81105707A EP 0045035 B1 EP0045035 B1 EP 0045035B1
Authority
EP
European Patent Office
Prior art keywords
guide bars
metal sheets
core
bridge
groove
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
Application number
EP81105707A
Other languages
German (de)
English (en)
French (fr)
Other versions
EP0045035A1 (de
Inventor
Ernst Manzinger
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.)
Transformatoren Union AG
Original Assignee
Transformatoren Union AG
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 Transformatoren Union AG filed Critical Transformatoren Union AG
Priority to AT81105707T priority Critical patent/ATE8086T1/de
Publication of EP0045035A1 publication Critical patent/EP0045035A1/de
Application granted granted Critical
Publication of EP0045035B1 publication Critical patent/EP0045035B1/de
Expired legal-status Critical Current

Links

Images

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 device for layering cores for transformers and choke coils with a plurality of individual sheets per layer and with mutually overlapping and mutually overlapping cutting lines, the individual sheets being guided and held mechanically at least while being placed on the core.
  • transformer cores made from the grain-oriented sheet metal that is generally used today should be built in such a way that holes or other cross-sectional changes in the active iron are avoided.
  • Such holes or changes in cross-section cause, in addition to the known increase in the no-load losses, increased risks with regard to iron fire and, in the case of design-related proximity of the core bandages to the holes, an abnormally high increase in the no-load losses in the surge voltage test of the transformer.
  • the cause of the last-mentioned effect lies in the formation of partial cross sections with relatively small resistances to the circumferential stress. The formation of these partial cross-sections is caused by high local package pressure at the holes and at the same time high circumferential pressure by core bandages.
  • cores are usually still designed with holes in the active iron even when using grain-oriented sheet metal. These holes are often used to receive core press studs, but mostly and primarily to receive threading studs during core layering.
  • the core layering by means of threading bolts has been shown to bring considerable advantages in terms of production time compared to the core layering, for example with step stops in step wood, as are occasionally used for cores made of non-perforated metal sheets.
  • each sheet of a core layer is provided with two holes, with the aid of which the sheet is pushed over corresponding threading bolts. After the target layer height of the core has been reached and the threading bolts have been removed, the holes in the core remain partly free or partly serve, for example in the yokes, for receiving press bolts.
  • DE-A No. 2163700 also discloses a device for layering cores from unperforated individual sheets.
  • the individual sheets of the lower yoke are moved mechanically at stops, placed in the correct position on the core and then each serve as stops for the individual sheets of the core legs.
  • this device cannot be used economically due to the considerable mechanical effort required.
  • the invention is therefore based on the object of building transformer cores from non-perforated metal sheets and, at the same time, achieving equally favorable production times when layering the cores, as can be achieved with core layers with threaded bolts.
  • this is made possible by a device into which individual sheets which are free of special holes and recesses provided for mechanical guidance can be inserted and which have at least two corners of their contours, preferably including an acute angle, in cross-section prismatic, vertically arranged grooves in stop rails are guided, the stop rails are vertically stepless and horizontal, apart from a stepless fine adjustment, adjustable in steps corresponding to half the sheet width gradation, and the respective position of the stop rails is indicated.
  • the stop rails can be displaced in the horizontal direction, transversely parallel and at 45 ° to the axial direction of the core legs, and that at the corners formed by the lower yoke and the outer core legs, a common stop rail each for the yoke and leg plates is provided and that the parts which lock the horizontally displaceable shaft of a stop rail are carried by a spring-loaded lever.
  • the groove in each of the stop rails is formed by two mutually parallel surfaces lying opposite one another over an enlarged groove base (T-groove) and is closed to the outside of each of these two surfaces, one against each other by 45 and 135 ° around the Groove axis turned surface. Only for guiding the free tip of the middle leg is provided a stop rail with double groove that can be moved transversely and parallel to its axial direction.
  • T-groove enlarged groove base
  • two stop rails assigned to the same core leg are each slidably fastened with their holder on a bridge which is also displaceable transversely to the axial direction of the core leg and all bridges are displaceable on a common base plate, the position of the individual bridges through windows in their supports of Scales on the base plate and the position of the stop rails on the bridge can be read from a scale on the bridge through windows in the holder of the stop rails.
  • the position of the bridge on the base plate shows the displacement of the associated stop rail transverse to the leg axes and the position of the brackets on the bridges shows the displacement of the associated stop rail parallel to the leg axes.
  • the device according to the invention is very advantageous because it enables the layering transformer core also made from non-perforated metal sheets, under practically the same conditions that exist when laminating transformer cores from metal sheets with so-called thread holes.
  • stop rails 1 are required in a device constructed according to the invention. These stop rails 1 are arranged such that each of the single sheets 10 with each one end is supported on one of the stop rails 1. Except for the stop rail 1 holding the free end of the middle leg 14, which has a double groove 16, all other stop rails are provided with a groove 15 into which the tips of the individual sheets 10 of the outer core legs 12 and 13 and of the middle leg 14 engage. This ensures that both the individual sheets of the yoke 11 and the individual sheets of the core legs 12, 13 and 14 are laterally displaced relative to one another in the individual sheet metal layers.
  • the arrangement according to FIG. 2 shows a three-legged core with longitudinally divided individual sheets 10, so that twice as many stop rails 1 are required for guiding and holding the individual sheets 10 compared to the embodiment with undivided sheets.
  • a stop rail 1 with a double groove 16 serves to receive the tips of the free end of the middle leg 14. All other stop rails 1 have the same shape as in the arrangement according to FIG. 1.
  • the groove 15 in the stop rails 1 is T-shaped in cross section, that is, it has an enlarged groove base.
  • the side walls flanking the groove 15 are parallel to one another. Starting from these parallel side surfaces, each is adjoined by a surface rotated by 45 and 135 ° about the groove axis.
  • the angles 45 and 135 ° are determined by the angle at which the obliquely cut end edges of the individual sheets of the core legs and the yokes meet. This oblique edge usually forms angles of 45 or 135 ° with the longitudinal edges of the individual sheets.
  • Fig. 3 shows the attachment of a stop rail 1 via a shaft 2 in a clamping piece 7, which in turn is carried by two guide columns 6.
  • the guide columns 6 are firmly anchored in a base plate serving as a holder 9.
  • the upper side of the shaft 2 is provided with notches 3, into which wedges (not designated in any more detail) are pressed by a spring-loaded lever 4.
  • a clamping nut actuated via a lever 8 is also used.
  • the height of the clamping piece 7 on the guide columns 6 is infinitely variable.
  • the clamping piece 7 can either be clamped by actuating the lever 8 with the associated clamping nut or by actuating a further clamping nut.
  • FIG. 4 shows the combination of two stop rails 1 together with their holders on a bridge 17, on which they can be moved together with their holders 9.
  • the position of each of the two brackets can be read on a scale 22.
  • the bridge 17 in turn rests at each of its two ends with a plate-shaped support 19 on a base plate 18.
  • the connection between the base plate 18 and the supports 19 is made by bolts provided in the supports 19, which engage in holes 20 of rows of holes in the base plate 18 .
  • the exact position of the bridge 17 can be read on scales 23.
  • the device according to the invention for layering transformer cores is equipped with a variable number of bridges 17 depending on the type of core to be layered. 1, three bridges 17 are provided for a normal three-leg core and six bridges 17 for a three-leg core with longitudinally divided individual sheets. To bridge a five-legged core (not shown) with undivided sheets in the longitudinal direction, five bridges 17 with two stop rails 1 would therefore be required.

Landscapes

  • Engineering & Computer Science (AREA)
  • Power Engineering (AREA)
  • Manufacturing & Machinery (AREA)
  • Manufacturing Cores, Coils, And Magnets (AREA)
EP81105707A 1980-07-28 1981-07-20 Vorrichtung zum Schichten von Kernen für Transformatoren und Drosselspulen Expired EP0045035B1 (de)

Priority Applications (1)

Application Number Priority Date Filing Date Title
AT81105707T ATE8086T1 (de) 1980-07-28 1981-07-20 Vorrichtung zum schichten von kernen fuer transformatoren und drosselspulen.

Applications Claiming Priority (2)

Application Number Priority Date Filing Date Title
DE3028605 1980-07-28
DE3028605A DE3028605C2 (de) 1980-07-28 1980-07-28 Vorrichtung zum Schichten von Kernen für Transformatoren und Drosselspulen

Publications (2)

Publication Number Publication Date
EP0045035A1 EP0045035A1 (de) 1982-02-03
EP0045035B1 true EP0045035B1 (de) 1984-06-20

Family

ID=6108302

Family Applications (1)

Application Number Title Priority Date Filing Date
EP81105707A Expired EP0045035B1 (de) 1980-07-28 1981-07-20 Vorrichtung zum Schichten von Kernen für Transformatoren und Drosselspulen

Country Status (4)

Country Link
EP (1) EP0045035B1 (ja)
JP (1) JPS5753920A (ja)
AT (1) ATE8086T1 (ja)
DE (1) DE3028605C2 (ja)

Families Citing this family (6)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
DE3623271A1 (de) * 1986-07-10 1988-01-21 Volta Werke Electricitaet Lamellierter eisenkern fuer transformatoren und drosseln mit zwei oder drei bewickelten kernschenkeln
DE3735661A1 (de) * 1987-10-21 1989-05-03 Siemens Ag Vorrichtung zum schichten von lamellierten eisenkernen fuer transformatoren und drosselspulen
ES2618581T3 (es) * 2007-08-09 2017-06-21 Abb Technology Ag Barra colectora de bobina para un transformador y método para su fabricación
DE102010061022B3 (de) 2010-12-03 2012-03-01 Wilhelm Hedrich Vakuumanlagen Gmbh & Co. Kg Verfahren und Vorrichtung zum Herstellen eines Stapels von Blechen
CN106829512B (zh) * 2017-02-10 2018-12-18 济南奥图自动化股份有限公司 一种伺服叠装对缝机构
CN108152616B (zh) * 2017-12-14 2023-06-27 马鞍山豪远电子有限公司 一种变压器铁芯的性能检测装置、变压器制造系统及方法

Family Cites Families (13)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US2332922A (en) * 1940-06-26 1943-10-26 Kuperus Jan Magnetic circuit comprising a laminated coiled core
GB799505A (en) * 1955-03-25 1958-08-13 Mullard Radio Valve Co Ltd An improved transformer core clamping device
FR1519526A (fr) * 1966-02-15 1968-04-05 Perfectionnements aux noyaux magnétiques feuilletés
DE1638406B1 (de) * 1967-08-23 1970-09-24 Licentia Gmbh Verfahren zum Zusammenpressen und zur Dickenmessung von Schichtkernen fuer Induktionsgeraete und Vorrichtung zur Durchfuehrung des Verfahrens
NL7013117A (ja) * 1970-09-04 1972-03-07
DE7134945U (de) * 1971-09-14 1973-12-20 Habermann H Vorrichtung zum wechselseitigen einschichten von blechen in das fenster einer gewickelten spule
DE2163700C3 (de) * 1971-12-22 1979-03-15 Transformatoren Union Ag, 7000 Stuttgart Verfahren und Vorrichtung zum automatischen Schichten von Einzelblechen für das untere Joch und die Schenkel mehrschenkeliger Kerne für Transformatoren, Drosselspulen u.dgl
BE792926A (fr) * 1971-12-22 1973-04-16 Transformatoren Union Ag Dispositif pour empiler les toles de noyaux de fer feuilletes de transformateurs, bobines de self et appareils a induction analogues
BE779905A (fr) * 1972-02-25 1972-08-25 Acec Noyau magnetique pour self de lissage.
US3927454A (en) * 1973-04-13 1975-12-23 Hitachi Ltd Apparatus for producing laminated magnetic cores for inductive electric apparatus
US3792397A (en) * 1973-07-02 1974-02-12 Allis Chalmers Stationary induction apparatus having sound attenuating core clamping means
DE2537410C2 (de) * 1975-08-22 1983-08-11 Brown, Boveri & Cie Ag, 6800 Mannheim Vorrichtung zum Stapeln von Einzelblechen zu einem Blechpaket
DE2613150A1 (de) * 1976-03-27 1977-09-29 Transformatoren Union Ag Maschinelle transformatoren-kernfertigung

Also Published As

Publication number Publication date
DE3028605C2 (de) 1983-10-27
JPS5753920A (ja) 1982-03-31
EP0045035A1 (de) 1982-02-03
DE3028605A1 (de) 1982-02-25
ATE8086T1 (de) 1984-07-15

Similar Documents

Publication Publication Date Title
DE2105633A1 (de) Plattenspannvorrichtung bei Stahlstichmaschinen
EP0339235A2 (de) Tisch mit höhenverstellbarer und kippbarer Tischplatte
EP0045035B1 (de) Vorrichtung zum Schichten von Kernen für Transformatoren und Drosselspulen
EP0106989A1 (de) Korb zum Festhalten von Teilen auf einem Boden während ihrer Wärmebehandlung
EP0849030A1 (de) Schweisslehre
DE3224065C2 (de) Verstellbare Stranggießkokille für Vielfachstranggießanlagen
DE2646020A1 (de) Bauteilsatz zur herstellung von kastenmauern
DE3212414C2 (ja)
DE725311C (de) Blechbiegepresse
EP0477423B1 (de) Rahmenverbundsystem
DE2729938C3 (de) Doppelbandpresse zum Herstellen von Preßplatten
DE2560661C2 (ja)
EP0766075B1 (de) Verfahren zur gleichzeitigen Prüfung von mehreren Kraftaufnehmern, insbesondere Wägezellen, mit einer Drucklast
DE3516187A1 (de) Steinsaegegatter mit horizontal schwingendem rahmen
DE3623271C2 (ja)
DE2730647B2 (de) Unterstützung für eine Fahrschiene
DE3113512A1 (de) "strehlmaschine"
DE2727287A1 (de) Verfahren und vorrichtung zum biegen profilierter bleche, platten, baender u.dgl.
DE3717900C2 (de) Gattersäge mit bei auf und ab bewegtem Sägerahmen seitwärts verstellbaren Sägeblättern
DE3735661C2 (ja)
DE102009007711A1 (de) Seitenwand für ein Schienenfahrzeug
DE9015425U1 (de) Schweißvorrichtung bzw. -lehre
DE3233308C2 (ja)
CH624318A5 (en) Method and apparatus for bending a corrugated sheet and a corrugated sheet bent by this method
DE694758C (de) Vorrichtung zur axialen Verstellung von Walzen

Legal Events

Date Code Title Description
PUAI Public reference made under article 153(3) epc to a published international application that has entered the european phase

Free format text: ORIGINAL CODE: 0009012

17P Request for examination filed

Effective date: 19811028

AK Designated contracting states

Designated state(s): AT CH LI NL SE

GRAA (expected) grant

Free format text: ORIGINAL CODE: 0009210

AK Designated contracting states

Designated state(s): AT CH LI NL SE

REF Corresponds to:

Ref document number: 8086

Country of ref document: AT

Date of ref document: 19840715

Kind code of ref document: T

PGFP Annual fee paid to national office [announced via postgrant information from national office to epo]

Ref country code: SE

Payment date: 19840930

Year of fee payment: 4

PGFP Annual fee paid to national office [announced via postgrant information from national office to epo]

Ref country code: CH

Payment date: 19841023

Year of fee payment: 4

PLBE No opposition filed within time limit

Free format text: ORIGINAL CODE: 0009261

STAA Information on the status of an ep patent application or granted ep patent

Free format text: STATUS: NO OPPOSITION FILED WITHIN TIME LIMIT

26N No opposition filed
PGFP Annual fee paid to national office [announced via postgrant information from national office to epo]

Ref country code: AT

Payment date: 19860625

Year of fee payment: 6

PGFP Annual fee paid to national office [announced via postgrant information from national office to epo]

Ref country code: NL

Payment date: 19870731

Year of fee payment: 7

PG25 Lapsed in a contracting state [announced via postgrant information from national office to epo]

Ref country code: AT

Effective date: 19890720

PG25 Lapsed in a contracting state [announced via postgrant information from national office to epo]

Ref country code: SE

Effective date: 19890721

PG25 Lapsed in a contracting state [announced via postgrant information from national office to epo]

Ref country code: LI

Effective date: 19890731

Ref country code: CH

Effective date: 19890731

PG25 Lapsed in a contracting state [announced via postgrant information from national office to epo]

Ref country code: NL

Effective date: 19900201

NLV4 Nl: lapsed or anulled due to non-payment of the annual fee
REG Reference to a national code

Ref country code: CH

Ref legal event code: PL

EUG Se: european patent has lapsed

Ref document number: 81105707.4

Effective date: 19900418