EP0545033A2 - Procédé pour lier un enroulement électrique avec un noyau magnétique - Google Patents

Procédé pour lier un enroulement électrique avec un noyau magnétique Download PDF

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Publication number
EP0545033A2
EP0545033A2 EP92117265A EP92117265A EP0545033A2 EP 0545033 A2 EP0545033 A2 EP 0545033A2 EP 92117265 A EP92117265 A EP 92117265A EP 92117265 A EP92117265 A EP 92117265A EP 0545033 A2 EP0545033 A2 EP 0545033A2
Authority
EP
European Patent Office
Prior art keywords
winding
core
heat
voltage source
bonding
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
EP92117265A
Other languages
German (de)
English (en)
Other versions
EP0545033B1 (fr
EP0545033A3 (en
Inventor
Heinz Autenrieth
Friedrich Ing. Stegmaier
Dieter Dipl.-Ing. Betz
Hubert Singer
Gunter Dr. Dipl.-Phys. Funk
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.)
Robert Bosch GmbH
Original Assignee
Robert Bosch GmbH
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 Robert Bosch GmbH filed Critical Robert Bosch GmbH
Publication of EP0545033A2 publication Critical patent/EP0545033A2/fr
Publication of EP0545033A3 publication Critical patent/EP0545033A3/de
Application granted granted Critical
Publication of EP0545033B1 publication Critical patent/EP0545033B1/fr
Anticipated expiration legal-status Critical
Expired - Lifetime 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

Definitions

  • the invention relates to a method according to the preamble of the main claim.
  • the assembled parts are brought to the required adhesive temperature in a circulating air oven in known methods, are held at this for a predetermined time and then at a lower curing temperature.
  • the heating process in a convection oven takes approx. 60 minutes, the curing time for adhesives usually used approx. 40 minutes.
  • the method according to the invention with the characterizing features of claim 1 has the advantage that the gluing point is heated in about 2 minutes and thus considerably faster.
  • the heating of the winding due to the current flow, on the one hand, and the eddy currents acting on the core surface, on the other hand directly heat the surfaces to be bonded, which results in a simultaneous and extensive hardening of the adhesive. The result is minimal residual stresses and better adhesion.
  • the alternating field can be generated directly by means of this. It is also achieved that the winding itself heats up due to its ohmic resistance. This further reduces the temperature gradient on the adhesive surfaces with the effects described above.
  • the space requirement in the production line is considerably reduced, since a convection oven and / or an induction oven are saved. If a suitable high-frequency current / voltage source is used, several coils can also be connected to the associated cores at the same time. Quality monitoring of the gluing process can advantageously be carried out by scanning the electrical parameters. This is possible because the proposed method achieves a very high thermal efficiency and only minimal radiation losses occur.
  • 10 denotes a unit to be connected, consisting of a core 12, a first winding 14 and a second winding 16.
  • the unit 10 essentially corresponds to the internal structure of an ignition coil.
  • the core 12 is composed of individual lamellae and the first and second windings 14 and 16 correspond to the primary and secondary coils.
  • the windings 14, 16 are cast and surround the core 12 in a cylindrical shape.
  • the surfaces to be bonded thus correspond to the contact surfaces between core 12 and winding 14.
  • the adhesive is applied to the surfaces to be bonded on one or both sides.
  • a high-frequency current / voltage source 18 in the form of an HF generator is connected to the first winding 14 and a resistor 20 and a capacitor 22 are connected in parallel to the second winding 16.
  • the first winding 14 generates an electromagnetic field in its environment, which on the one hand induces a voltage in the second winding 16 and on the other hand eddy currents on the surface of the core 12. Due to their ohmic resistance, the second winding also heats up. In addition, the surface layer of the core 12 heats up due to the eddy currents and hysteresis losses.
  • the unit 10 in particular the contact surfaces between the core 12 and the first winding 14, heats up quickly and evenly in this way.
  • the second winding 16 is loaded by the resistor 20 and overvoltages which could lead to the destruction of the winding 16 are avoided.
  • the capacitor 22 counteracts parasitic vibrations in the winding 16 and suppresses the magical occurrence of glow discharges.
  • the unit 10 is brought to the processing or curing temperature of the adhesive, this temperature is maintained with reduced power supply until the adhesive has cured. It is also conceivable that after the unit 10 has been heated, the complete unit 10 is placed in an already preheated oven, in which it then remains until it has hardened. If a fast-curing adhesive is used, the amount of heat applied is sufficient and the thermal aftertreatment can be omitted.
  • electrical parameters can be tapped on the modules 18, 20, 22 or on their feed lines to the unit 10 and fed to a quality control unit (not shown).
  • transformers e.g. B. leg transformers with separate primary and secondary windings or windings of motors with the associated iron yoke parts.
  • the primary coil was connected to an AC voltage of 160 V and a frequency of 20 - 40 kHz in order to achieve appropriate heating.
  • the secondary coil was connected with a resistance of 12 k ⁇ and in parallel with a capacitor with 2 n F.
  • the heating time to a temperature of 120 ° C was 2 minutes with this ignition coil.

Landscapes

  • Engineering & Computer Science (AREA)
  • Power Engineering (AREA)
  • Manufacturing & Machinery (AREA)
  • Insulating Of Coils (AREA)
  • General Induction Heating (AREA)
  • Manufacture Of Motors, Generators (AREA)
  • Adhesives Or Adhesive Processes (AREA)
EP92117265A 1991-11-30 1992-10-09 Procédé pour lier un enroulement électrique avec un noyau magnétique Expired - Lifetime EP0545033B1 (fr)

Applications Claiming Priority (2)

Application Number Priority Date Filing Date Title
DE4139541A DE4139541A1 (de) 1991-11-30 1991-11-30 Verfahren zum verbinden einer elektrischen wicklung mit einem eisenkern
DE4139541 1991-11-30

Publications (3)

Publication Number Publication Date
EP0545033A2 true EP0545033A2 (fr) 1993-06-09
EP0545033A3 EP0545033A3 (en) 1993-10-27
EP0545033B1 EP0545033B1 (fr) 1997-01-15

Family

ID=6445981

Family Applications (1)

Application Number Title Priority Date Filing Date
EP92117265A Expired - Lifetime EP0545033B1 (fr) 1991-11-30 1992-10-09 Procédé pour lier un enroulement électrique avec un noyau magnétique

Country Status (3)

Country Link
EP (1) EP0545033B1 (fr)
DE (2) DE4139541A1 (fr)
ES (1) ES2097253T3 (fr)

Cited By (4)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US6855760B1 (en) 1999-05-26 2005-02-15 Henkel Kommanditgesellschaft Auf Aktien Detachable adhesive compounds
US7147742B2 (en) 2000-08-03 2006-12-12 Henkel Kommanditgesellschaft Auf Aktien ( Henkel Kgaa) Method for accelerating the curing of adhesives
US7407704B2 (en) 1999-10-27 2008-08-05 Henkel Kgaa Process for adhesive separation of bonded joints
DE102013003612A1 (de) * 2013-03-01 2014-09-04 Gerhard Fauner Verfahren zum Härten und/oder Bauteil schonenden Lösen von Klebverbindungen im elektromagnetischen Feld

Families Citing this family (6)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
DE4432978C2 (de) * 1994-09-16 2001-02-08 Vem Elektroantriebe Gmbh Vorrichtung und Verfahren zur induktiven Erwärmung getränkter elektrischer Baugruppen
DE19718872C1 (de) * 1997-05-03 1998-06-25 Gottlob Thumm Gmbh Maschbau Elektrische Erwärmungsvorrichtung für ein eine Wicklung aufweisendes elektrisches Bauteil
DE19844399C1 (de) * 1998-05-19 1999-09-23 Gottlob Thumm Gmbh Maschbau Elektrische Aufwärmvorrichtung für ein ein geschichtetes Blechpaket aufweisendes elektrisches Bauteil
DE19822434C1 (de) * 1998-05-19 1999-08-12 Gottlob Thumm Gmbh Maschbau Elektrische Aufwärmvorrichtung für ein mit einer Wicklung versehenes Bauteil
DE19914591B4 (de) * 1999-03-31 2004-04-15 Conti Temic Microelectronic Gmbh Verfahren zur Herstellung von Elektromagneten
DE10345265B4 (de) * 2003-09-27 2006-07-13 Ajax Tocco Magnethermic Corp., Warren Verfahren und Vorrichtung zum Imprägnieren, Verfestigen und Elektroisolieren von ein- oder mehrlagige Wicklungen tragenden Körpern

Family Cites Families (1)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
DE2838727A1 (de) * 1978-09-06 1980-03-20 Bosch Gmbh Robert Elektrische wicklung und verfahren zu ihrer herstellung

Cited By (4)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US6855760B1 (en) 1999-05-26 2005-02-15 Henkel Kommanditgesellschaft Auf Aktien Detachable adhesive compounds
US7407704B2 (en) 1999-10-27 2008-08-05 Henkel Kgaa Process for adhesive separation of bonded joints
US7147742B2 (en) 2000-08-03 2006-12-12 Henkel Kommanditgesellschaft Auf Aktien ( Henkel Kgaa) Method for accelerating the curing of adhesives
DE102013003612A1 (de) * 2013-03-01 2014-09-04 Gerhard Fauner Verfahren zum Härten und/oder Bauteil schonenden Lösen von Klebverbindungen im elektromagnetischen Feld

Also Published As

Publication number Publication date
EP0545033B1 (fr) 1997-01-15
ES2097253T3 (es) 1997-04-01
DE59207892D1 (de) 1997-02-27
EP0545033A3 (en) 1993-10-27
DE4139541A1 (de) 1993-06-03

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