FR2380125A1 - Methode de fabrication d'un moteur miniature en matiere plastique - Google Patents

Methode de fabrication d'un moteur miniature en matiere plastique

Info

Publication number
FR2380125A1
FR2380125A1 FR7803749A FR7803749A FR2380125A1 FR 2380125 A1 FR2380125 A1 FR 2380125A1 FR 7803749 A FR7803749 A FR 7803749A FR 7803749 A FR7803749 A FR 7803749A FR 2380125 A1 FR2380125 A1 FR 2380125A1
Authority
FR
France
Prior art keywords
immediately before
completely filled
injection pressure
mfr
reduced immediately
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
FR7803749A
Other languages
English (en)
Other versions
FR2380125B1 (fr
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.)
Hitachi Ltd
Original Assignee
Hitachi Ltd
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 Hitachi Ltd filed Critical Hitachi Ltd
Publication of FR2380125A1 publication Critical patent/FR2380125A1/fr
Application granted granted Critical
Publication of FR2380125B1 publication Critical patent/FR2380125B1/fr
Granted legal-status Critical Current

Links

Classifications

    • H—ELECTRICITY
    • H02—GENERATION; CONVERSION OR DISTRIBUTION OF ELECTRIC POWER
    • H02K—DYNAMO-ELECTRIC MACHINES
    • H02K15/00—Methods or apparatus specially adapted for manufacturing, assembling, maintaining or repairing of dynamo-electric machines
    • H02K15/14—Casings; Enclosures; Supports
    • B—PERFORMING OPERATIONS; TRANSPORTING
    • B29—WORKING OF PLASTICS; WORKING OF SUBSTANCES IN A PLASTIC STATE IN GENERAL
    • B29C—SHAPING OR JOINING OF PLASTICS; SHAPING OF MATERIAL IN A PLASTIC STATE, NOT OTHERWISE PROVIDED FOR; AFTER-TREATMENT OF THE SHAPED PRODUCTS, e.g. REPAIRING
    • B29C45/00—Injection moulding, i.e. forcing the required volume of moulding material through a nozzle into a closed mould; Apparatus therefor
    • B29C45/14—Injection moulding, i.e. forcing the required volume of moulding material through a nozzle into a closed mould; Apparatus therefor incorporating preformed parts or layers, e.g. injection moulding around inserts or for coating articles
    • B29C45/14639—Injection moulding, i.e. forcing the required volume of moulding material through a nozzle into a closed mould; Apparatus therefor incorporating preformed parts or layers, e.g. injection moulding around inserts or for coating articles for obtaining an insulating effect, e.g. for electrical components
    • H—ELECTRICITY
    • H02—GENERATION; CONVERSION OR DISTRIBUTION OF ELECTRIC POWER
    • H02K—DYNAMO-ELECTRIC MACHINES
    • H02K15/00—Methods or apparatus specially adapted for manufacturing, assembling, maintaining or repairing of dynamo-electric machines
    • H02K15/12—Impregnating, heating or drying of windings, stators, rotors or machines

Landscapes

  • Engineering & Computer Science (AREA)
  • Manufacturing & Machinery (AREA)
  • Power Engineering (AREA)
  • Mechanical Engineering (AREA)
  • Manufacture Of Motors, Generators (AREA)
  • Motor Or Generator Frames (AREA)

Abstract

Méthode de fabrication d'un moteur miniature en matière plastique caractérisée en ce que, lors du moulage d'un carter ou d'un support d'extrémité en matière plastique thermodurcissable qui est un élément placé autour d'un stator du moteur miniature, la pression injectée dans le moule est abaissée par rapport à la pression interne de la matière plastique du moule et immédiatement avant la fin du remplissage de la matière plastique dans ledit moule. Plus particulièrement la pression injectée de la matière plastique dans le moule est transformée en deux étapes d'abord une pression élevée (à peu près 80 kg/cm**2) et ensuite une pression basse (à peu près 20 kg/cm**2).
FR7803749A 1977-02-10 1978-02-10 Methode de fabrication d'un moteur miniature en matiere plastique Granted FR2380125A1 (fr)

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
JP1294877A JPS5399401A (en) 1977-02-10 1977-02-10 Preparing small motor of synthetic resin

Publications (2)

Publication Number Publication Date
FR2380125A1 true FR2380125A1 (fr) 1978-09-08
FR2380125B1 FR2380125B1 (fr) 1981-06-12

Family

ID=11819493

Family Applications (1)

Application Number Title Priority Date Filing Date
FR7803749A Granted FR2380125A1 (fr) 1977-02-10 1978-02-10 Methode de fabrication d'un moteur miniature en matiere plastique

Country Status (3)

Country Link
JP (1) JPS5399401A (fr)
DE (1) DE2805659A1 (fr)
FR (1) FR2380125A1 (fr)

Cited By (1)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
ES2042398A2 (es) * 1992-03-03 1993-12-01 Astier Turro Jaime Motor electrico.

Families Citing this family (7)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
JPS55142632A (en) * 1979-03-31 1980-11-07 Toyota Motor Corp Low-pressure injecting method using screw inlying injection molding machine
JPS5619365A (en) * 1979-07-23 1981-02-24 Toshiba Corp Manufacture of stator
DE3279339D1 (en) * 1982-05-09 1989-02-16 Technoplas Inc Injection molding method and apparatus
DE3336173C2 (de) * 1983-10-05 1985-08-29 Maschinenfabrik Lauffer GmbH & Co KG, 7240 Horb Presse mit mehreren Spritzkolben zur gleichzeitigen Herstellung mehrerer Kunststoffpreßteile
DE3819686A1 (de) * 1988-06-09 1989-12-14 Siemens Ag Verfahren zum umspritzen von elektrischen bauelementen mit duroplastischen kunststoffen
US5964694A (en) * 1997-04-02 1999-10-12 Guidant Corporation Method and apparatus for cardiac blood flow assistance
JP7113694B2 (ja) * 2018-07-31 2022-08-05 株式会社三井ハイテック 鉄心製品の製造方法及び鉄心製品の製造装置

Citations (6)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US2058938A (en) * 1928-03-17 1936-10-27 Herbert F Apple Plastic molding
FR1270900A (fr) * 1960-10-12 1961-09-01 Ankerwerk Gebrueder Goller Procédé de fabrication de corps en matière thermoplastique moulés
FR1338839A (fr) * 1962-11-12 1963-09-27 Lucifer Sa Procédé pour noyer un enroulement dans un mélange de matière synthétique thermoplastique et enroulement obtenu par ce procédé
GB1208387A (en) * 1967-03-10 1970-10-14 Drymit S A Mould for use in an injection moulding process
FR2153026A1 (fr) * 1971-09-15 1973-04-27 Gen Electric
FR2299103A1 (fr) * 1975-01-31 1976-08-27 Ube Industries Procede et appareil d'injection d'une matiere fondue sous pression et produit ainsi obtenu

Patent Citations (6)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US2058938A (en) * 1928-03-17 1936-10-27 Herbert F Apple Plastic molding
FR1270900A (fr) * 1960-10-12 1961-09-01 Ankerwerk Gebrueder Goller Procédé de fabrication de corps en matière thermoplastique moulés
FR1338839A (fr) * 1962-11-12 1963-09-27 Lucifer Sa Procédé pour noyer un enroulement dans un mélange de matière synthétique thermoplastique et enroulement obtenu par ce procédé
GB1208387A (en) * 1967-03-10 1970-10-14 Drymit S A Mould for use in an injection moulding process
FR2153026A1 (fr) * 1971-09-15 1973-04-27 Gen Electric
FR2299103A1 (fr) * 1975-01-31 1976-08-27 Ube Industries Procede et appareil d'injection d'une matiere fondue sous pression et produit ainsi obtenu

Cited By (1)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
ES2042398A2 (es) * 1992-03-03 1993-12-01 Astier Turro Jaime Motor electrico.

Also Published As

Publication number Publication date
JPS5738099B2 (fr) 1982-08-13
DE2805659A1 (de) 1978-08-17
JPS5399401A (en) 1978-08-30
FR2380125B1 (fr) 1981-06-12

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Legal Events

Date Code Title Description
ST Notification of lapse