EP0045035A1 - Dispositif d'assemblage de noyaux pour transformateurs et inductances - Google Patents

Dispositif d'assemblage de noyaux pour transformateurs et inductances Download PDF

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Publication number
EP0045035A1
EP0045035A1 EP81105707A EP81105707A EP0045035A1 EP 0045035 A1 EP0045035 A1 EP 0045035A1 EP 81105707 A EP81105707 A EP 81105707A EP 81105707 A EP81105707 A EP 81105707A EP 0045035 A1 EP0045035 A1 EP 0045035A1
Authority
EP
European Patent Office
Prior art keywords
stop rails
stop
bridge
rails
core
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
EP81105707A
Other languages
German (de)
English (en)
Other versions
EP0045035B1 (fr
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/fr
Application granted granted Critical
Publication of EP0045035B1 publication Critical patent/EP0045035B1/fr
Expired legal-status Critical Current

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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 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 of the grain-oriented sheet metal that is generally used today should, if possible, be constructed in such a way that holes or other cross-sectional changes in the active iron are avoided.
  • These holes or cross-sectional changes cause, in addition to the known increase in no-load losses, increased risks with regard to iron firing and in the case of constructively related proximity of core bandages the holes abnormally high increase in open circuit losses when surge testing the transformer.
  • the reason for 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 bolts, but mostly and primarily to receive threading bolts during core layering.
  • the core layering by means of threading bolts has been shown to bring considerable advantages with regard to the production time compared to the core layering, for example with step stops in step woods such as they are used occasionally for cores made of non-perforated sheet metal.
  • 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.
  • the invention is therefore based on the object of building transformer cores from non-perforated metal sheets and at the same time achieving the same favorable production times when layering the cores as are achieved with core layers with threaded bolts.
  • this is made possible by a device into which individual sheets, free of special holes and recesses provided for mechanical guidance, can be inserted, on at least two of them preferably the corners, which enclose an acute angle, are guided in stop rails in vertically arranged prismatic grooves in cross section, the stop rails being vertically steplessly and horizontally, apart from a continuously fine adjustment, in steps corresponding to half the sheet width gradation and the respective position of the Stop rails is displayed.
  • stop rails in the horizontal direction can be moved transversely, parallel and at 45 ° to the axial direction of the core legs, that at the corners formed by the lower yoke and the outer core legs each have a common for the yoke and leg plates Stop rail is provided and that the horizontally displaceable shaft of a stop rail parts are supported 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 each of these two surfaces is externally closed by 45 ° and 135 ° 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 the axial direction thereof.
  • 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 a transformer core to be layered even from non-perforated metal sheets, under practically the same conditions that exist when layering transformer cores from metal sheets with so-called thread holes.
  • each with a single sheet 10 for a lower yoke 11, outer core legs 12 and 13 and a middle leg 14, six 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 has one end is supported on one of the stop rails 1. Until the stop rail 1 holding the free end of the middle leg 14 and having 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 layers.
  • the arrangement according to FIG. 2 shows a three-leg 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. Based on these parallel side faces close to a respective against this by 45 ° and by 135 0 rotated about the groove axis surfaces on these.
  • the angles 45 0 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 fixed in a base plate serving as a holder 9 anchored.
  • the shaft 2 is provided on its upper side with notches 3, into which wedges (not further specified) 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 summary of two stop rails 1 together with their brackets on a bridge 17 on which they can be moved together with their brackets 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 are in holes 20 of rows of holes in the base plate 18 intervention.
  • 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, there are three bridges 17 and 15 for a normal three-legged core and six bridges 17 are provided for a three-legged core with longitudinally divided individual sheets. To bridge a five-legged core (not shown) with undivided sheets in the longitudinal direction, five bridges 17 each with two stop rails 1 would 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 Dispositif d'assemblage de noyaux pour transformateurs et inductances Expired EP0045035B1 (fr)

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 true EP0045035A1 (fr) 1982-02-03
EP0045035B1 EP0045035B1 (fr) 1984-06-20

Family

ID=6108302

Family Applications (1)

Application Number Title Priority Date Filing Date
EP81105707A Expired EP0045035B1 (fr) 1980-07-28 1981-07-20 Dispositif d'assemblage de noyaux pour transformateurs et inductances

Country Status (4)

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

Cited By (4)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
DE3735661A1 (de) * 1987-10-21 1989-05-03 Siemens Ag Vorrichtung zum schichten von lamellierten eisenkernen fuer transformatoren und drosselspulen
US7752735B2 (en) * 2007-08-09 2010-07-13 Abb Technology Ag Coil bus transformer and a method of manufacturing the same
CN106829512A (zh) * 2017-02-10 2017-06-13 济南奥图自动化股份有限公司 一种伺服叠装对缝机构
CN108152616A (zh) * 2017-12-14 2018-06-12 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

Families Citing this family (2)

* 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
DE102010061022B3 (de) 2010-12-03 2012-03-01 Wilhelm Hedrich Vakuumanlagen Gmbh & Co. Kg Verfahren und Vorrichtung zum Herstellen eines Stapels von Blechen

Citations (7)

* 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
NL7013117A (fr) * 1970-09-04 1972-03-07
FR2173171A1 (fr) * 1972-02-25 1973-10-05 Acec Self de lissage.
US3792397A (en) * 1973-07-02 1974-02-12 Allis Chalmers Stationary induction apparatus having sound attenuating core clamping means
US3927454A (en) * 1973-04-13 1975-12-23 Hitachi Ltd Apparatus for producing laminated magnetic cores for inductive electric apparatus

Family Cites Families (6)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
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
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
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

Patent Citations (7)

* 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
NL7013117A (fr) * 1970-09-04 1972-03-07
FR2173171A1 (fr) * 1972-02-25 1973-10-05 Acec 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

Cited By (4)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
DE3735661A1 (de) * 1987-10-21 1989-05-03 Siemens Ag Vorrichtung zum schichten von lamellierten eisenkernen fuer transformatoren und drosselspulen
US7752735B2 (en) * 2007-08-09 2010-07-13 Abb Technology Ag Coil bus transformer and a method of manufacturing the same
CN106829512A (zh) * 2017-02-10 2017-06-13 济南奥图自动化股份有限公司 一种伺服叠装对缝机构
CN108152616A (zh) * 2017-12-14 2018-06-12 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

Also Published As

Publication number Publication date
DE3028605C2 (de) 1983-10-27
DE3028605A1 (de) 1982-02-25
EP0045035B1 (fr) 1984-06-20
JPS5753920A (fr) 1982-03-31
ATE8086T1 (de) 1984-07-15

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