JPS63234508A - Manufacture of rare-earth plastic magnet ringlike molded body - Google Patents

Manufacture of rare-earth plastic magnet ringlike molded body

Info

Publication number
JPS63234508A
JPS63234508A JP6793687A JP6793687A JPS63234508A JP S63234508 A JPS63234508 A JP S63234508A JP 6793687 A JP6793687 A JP 6793687A JP 6793687 A JP6793687 A JP 6793687A JP S63234508 A JPS63234508 A JP S63234508A
Authority
JP
Japan
Prior art keywords
core
molded body
ringlike
mold
injection molding
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
JP6793687A
Other languages
Japanese (ja)
Other versions
JPH0727834B2 (en
Inventor
Shigeo Yamaki
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 JP6793687A priority Critical patent/JPH0727834B2/en
Publication of JPS63234508A publication Critical patent/JPS63234508A/en
Publication of JPH0727834B2 publication Critical patent/JPH0727834B2/en
Anticipated expiration legal-status Critical
Expired - Lifetime legal-status Critical Current

Links

Abstract

PURPOSE: To make it possible to easily form a nondeformed molded body using a simple and low-priced injection molding metal mold by a method wherein, using the injection molding metal mold provided with a specific strip groove on the circumferential surface of a core member, a ringlike molding body is fixed to the core memory, and after the mold has been released, the molding body is picked out by projecting it from the core member.
CONSTITUTION: A strip groove 16 of 0.001W1 mm in depth is provided on the circumferential surface of an injection molding metal mold whereon the cavity of the core 10 will be formed. When a plastic magnetic ringlike molded body is formed, material is injected from the nozzle of an injection molding machine, it is filled up in a ring- shaped cavity 17 and molded in a magnetic field. When the molding is completed, a movable metal mold member is separated from a fixed mold member by moving a movable mold supporting plate, and then an ejector rod 14 is thrusted up, the knockout plate 6 coupled with the ejector bars 15 and 16 is pushed up and the ringlike molded body left around a core 8 is picked out from the core 10. As a result, the molded body can be formed easily using an uncomplicated structure and low-priced mold without deformation.
COPYRIGHT: (C)1988,JPO&Japio
JP6793687A 1987-03-24 1987-03-24 Manufacturing method of rare earth plastic magnet ring-shaped compact Expired - Lifetime JPH0727834B2 (en)

Priority Applications (1)

Application Number Priority Date Filing Date Title
JP6793687A JPH0727834B2 (en) 1987-03-24 1987-03-24 Manufacturing method of rare earth plastic magnet ring-shaped compact

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
JP6793687A JPH0727834B2 (en) 1987-03-24 1987-03-24 Manufacturing method of rare earth plastic magnet ring-shaped compact

Publications (2)

Publication Number Publication Date
JPS63234508A true JPS63234508A (en) 1988-09-29
JPH0727834B2 JPH0727834B2 (en) 1995-03-29

Family

ID=13359312

Family Applications (1)

Application Number Title Priority Date Filing Date
JP6793687A Expired - Lifetime JPH0727834B2 (en) 1987-03-24 1987-03-24 Manufacturing method of rare earth plastic magnet ring-shaped compact

Country Status (1)

Country Link
JP (1) JPH0727834B2 (en)

Cited By (1)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
CN106925778A (en) * 2015-12-30 2017-07-07 上海三环磁性材料有限公司 A kind of anisotropic bonded magnet planar orientation mould

Cited By (1)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
CN106925778A (en) * 2015-12-30 2017-07-07 上海三环磁性材料有限公司 A kind of anisotropic bonded magnet planar orientation mould

Also Published As

Publication number Publication date
JPH0727834B2 (en) 1995-03-29

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