JPS5584640A - Production of anisotropic resin magnet - Google Patents

Production of anisotropic resin magnet

Info

Publication number
JPS5584640A
JPS5584640A JP15753978A JP15753978A JPS5584640A JP S5584640 A JPS5584640 A JP S5584640A JP 15753978 A JP15753978 A JP 15753978A JP 15753978 A JP15753978 A JP 15753978A JP S5584640 A JPS5584640 A JP S5584640A
Authority
JP
Japan
Prior art keywords
product
plate
mold
magnetic
metal mold
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
JP15753978A
Other languages
Japanese (ja)
Other versions
JPS5944975B2 (en
Inventor
Takeshi Anpo
Takahiro Motone
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.)
Daido Steel Co Ltd
Original Assignee
Daido Steel 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 Daido Steel Co Ltd filed Critical Daido Steel Co Ltd
Priority to JP15753978A priority Critical patent/JPS5944975B2/en
Publication of JPS5584640A publication Critical patent/JPS5584640A/en
Publication of JPS5944975B2 publication Critical patent/JPS5944975B2/en
Expired legal-status Critical Current

Links

Classifications

    • 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
    • B29C45/0013—Injection moulding, i.e. forcing the required volume of moulding material through a nozzle into a closed mould; Apparatus therefor using fillers dispersed in the moulding material, e.g. metal particles

Landscapes

  • Chemical & Material Sciences (AREA)
  • Dispersion Chemistry (AREA)
  • Engineering & Computer Science (AREA)
  • Manufacturing & Machinery (AREA)
  • Mechanical Engineering (AREA)
  • Manufacturing Cores, Coils, And Magnets (AREA)
  • Injection Moulding Of Plastics Or The Like (AREA)

Abstract

PURPOSE:To improve use life of a metal mold and enhance magnetic properties of a product with a small magnetomotive force by a method wherein a metal mold having a core of ferromagnetic material and a non-magnetic plate thicker than a product is used for the production of an anisotropic resin magnet by injection molding in a magnetic field. CONSTITUTION:A lower mold plate 2 of an injection molding machine is fitted with an electromagnet 3 and a magnetic pole 4, on which is fixed a metal mold consisting of ferromagnetic mold plates 8-10,12,13 and a non-magnetic mold plate 11. The plate 11 to constitute a product portion is set thicker than a product cavity, and the metal mold is provided therein with a core 16 of ferromagnetic material having a thickness corresponding to the increment of thickness. With a magnetic field developed in a cavity 6 by the electromagnet 3, a mixture of a magnet powder and a resin is injection molded to form a product. Wear of the plate 11 is reduced because the core 16 is applied with a part of the mold fastening force. Magnetic properties of the product magnet can be improved because the magnetic field in the cavity can be strengthened.
JP15753978A 1978-12-22 1978-12-22 Manufacturing method of anisotropic resin magnet Expired JPS5944975B2 (en)

Priority Applications (1)

Application Number Priority Date Filing Date Title
JP15753978A JPS5944975B2 (en) 1978-12-22 1978-12-22 Manufacturing method of anisotropic resin magnet

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
JP15753978A JPS5944975B2 (en) 1978-12-22 1978-12-22 Manufacturing method of anisotropic resin magnet

Publications (2)

Publication Number Publication Date
JPS5584640A true JPS5584640A (en) 1980-06-26
JPS5944975B2 JPS5944975B2 (en) 1984-11-02

Family

ID=15651882

Family Applications (1)

Application Number Title Priority Date Filing Date
JP15753978A Expired JPS5944975B2 (en) 1978-12-22 1978-12-22 Manufacturing method of anisotropic resin magnet

Country Status (1)

Country Link
JP (1) JPS5944975B2 (en)

Cited By (7)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
JPS5854620A (en) * 1981-09-28 1983-03-31 Dai Ichi Seiko Co Ltd Injection molding machine for plastic magnet
JPS59130410A (en) * 1983-01-17 1984-07-27 Japan Steel Works Ltd:The Mold clamping apparatus for plastic magnetic injection molding machine
JPS59143312A (en) * 1983-02-04 1984-08-16 Japan Steel Works Ltd:The Magnetic field generating equipment of plastic magnet injection molder
JPS60101731U (en) * 1983-12-14 1985-07-11 セイコーエプソン株式会社 Mold for magnetic field injection molding
JPS6194327U (en) * 1984-11-27 1986-06-18
JPS629922A (en) * 1985-07-09 1987-01-17 Sumitomo Bakelite Co Ltd Injection molding machine for anisotropic resin magnet
US4666387A (en) * 1984-10-18 1987-05-19 The Japan Steel Works, Ltd. Press apparatus for magnetic injection molding machines

Cited By (9)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
JPS5854620A (en) * 1981-09-28 1983-03-31 Dai Ichi Seiko Co Ltd Injection molding machine for plastic magnet
JPS59130410A (en) * 1983-01-17 1984-07-27 Japan Steel Works Ltd:The Mold clamping apparatus for plastic magnetic injection molding machine
JPH0423408B2 (en) * 1983-01-17 1992-04-22 Japan Steel Works Ltd
JPS59143312A (en) * 1983-02-04 1984-08-16 Japan Steel Works Ltd:The Magnetic field generating equipment of plastic magnet injection molder
JPH04373B2 (en) * 1983-02-04 1992-01-07 Japan Steel Works Ltd
JPS60101731U (en) * 1983-12-14 1985-07-11 セイコーエプソン株式会社 Mold for magnetic field injection molding
US4666387A (en) * 1984-10-18 1987-05-19 The Japan Steel Works, Ltd. Press apparatus for magnetic injection molding machines
JPS6194327U (en) * 1984-11-27 1986-06-18
JPS629922A (en) * 1985-07-09 1987-01-17 Sumitomo Bakelite Co Ltd Injection molding machine for anisotropic resin magnet

Also Published As

Publication number Publication date
JPS5944975B2 (en) 1984-11-02

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