JPS5790930A - Apparatus for manufacturing resin molded electric equipment - Google Patents

Apparatus for manufacturing resin molded electric equipment

Info

Publication number
JPS5790930A
JPS5790930A JP16692180A JP16692180A JPS5790930A JP S5790930 A JPS5790930 A JP S5790930A JP 16692180 A JP16692180 A JP 16692180A JP 16692180 A JP16692180 A JP 16692180A JP S5790930 A JPS5790930 A JP S5790930A
Authority
JP
Japan
Prior art keywords
metal mold
resin
metal
mold
electric equipment
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.)
Pending
Application number
JP16692180A
Other languages
Japanese (ja)
Inventor
Saburo Yoshida
Tamio Takeda
Yasuyuki Kobayashi
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.)
Toshiba Corp
Original Assignee
Toshiba Corp
Tokyo Shibaura Electric Co 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 Toshiba Corp, Tokyo Shibaura Electric Co Ltd filed Critical Toshiba Corp
Priority to JP16692180A priority Critical patent/JPS5790930A/en
Publication of JPS5790930A publication Critical patent/JPS5790930A/en
Pending legal-status Critical Current

Links

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
    • H01F41/04—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 for manufacturing coils
    • H01F41/12—Insulating of windings
    • H01F41/127—Encapsulating or impregnating

Landscapes

  • Engineering & Computer Science (AREA)
  • Power Engineering (AREA)
  • Manufacturing & Machinery (AREA)
  • Insulating Of Coils (AREA)

Abstract

PURPOSE:To obtain the mold without voids and cracks in the case the electric equipment and its parts are molded to form a unitary body by resin by employing a metal mold and a heating furnace, by providing heat sources at the lower part of the metal mold, and making the temperature of the lower part of the metal mold higher than the temperature in the furnace. CONSTITUTION:The metal mold having a resin injecting hole 11c is constituted by divided metal molds 11a and 11b. Heat source inserting holes 5a and 5b are provided in the lower part of said metal molds. The heat sources 6a and 6b comprising electric heaters are inserted in said holes 5a and 5b and connected to a power source 7 by connecting wires 7a and 7b. In this constitution, levels A-C are sequentially set from the bottom of the metal mold in the upward direction of the height. The temperatures of the levels are tA, tB, and tC, respectively. Then the relationship tA>tB>tC which is in the reverse order with respect to the normal order is obtained. The volume of the contraction of the resin 3 when the hardening of the resin begins from the bottom of the metal mold, is always supplied from the top. Therefore the voids and the cracks are not generated, and the molded product without defects in appearance and electric insulation can be obtained.
JP16692180A 1980-11-27 1980-11-27 Apparatus for manufacturing resin molded electric equipment Pending JPS5790930A (en)

Priority Applications (1)

Application Number Priority Date Filing Date Title
JP16692180A JPS5790930A (en) 1980-11-27 1980-11-27 Apparatus for manufacturing resin molded electric equipment

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
JP16692180A JPS5790930A (en) 1980-11-27 1980-11-27 Apparatus for manufacturing resin molded electric equipment

Publications (1)

Publication Number Publication Date
JPS5790930A true JPS5790930A (en) 1982-06-05

Family

ID=15840114

Family Applications (1)

Application Number Title Priority Date Filing Date
JP16692180A Pending JPS5790930A (en) 1980-11-27 1980-11-27 Apparatus for manufacturing resin molded electric equipment

Country Status (1)

Country Link
JP (1) JPS5790930A (en)

Cited By (2)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
JPH04119609A (en) * 1990-09-10 1992-04-21 Toshiba Corp Manufacture of molded coil
JP2010263088A (en) * 2009-05-07 2010-11-18 Sumitomo Electric Ind Ltd Reactor structure and method of manufacturing the same

Cited By (2)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
JPH04119609A (en) * 1990-09-10 1992-04-21 Toshiba Corp Manufacture of molded coil
JP2010263088A (en) * 2009-05-07 2010-11-18 Sumitomo Electric Ind Ltd Reactor structure and method of manufacturing the same

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