JPS6474362A - Manufacture of sealing member for sealing magnetic fluid - Google Patents

Manufacture of sealing member for sealing magnetic fluid

Info

Publication number
JPS6474362A
JPS6474362A JP62228573A JP22857387A JPS6474362A JP S6474362 A JPS6474362 A JP S6474362A JP 62228573 A JP62228573 A JP 62228573A JP 22857387 A JP22857387 A JP 22857387A JP S6474362 A JPS6474362 A JP S6474362A
Authority
JP
Japan
Prior art keywords
polepiece
annular
resin
sealing
hardened
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
JP62228573A
Other languages
Japanese (ja)
Inventor
Tadayoshi Toida
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.)
NSK Ltd
Original Assignee
NSK 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 NSK Ltd filed Critical NSK Ltd
Priority to JP62228573A priority Critical patent/JPS6474362A/en
Publication of JPS6474362A publication Critical patent/JPS6474362A/en
Pending legal-status Critical Current

Links

Landscapes

  • Sealing Using Fluids, Sealing Without Contact, And Removal Of Oil (AREA)
  • Injection Moulding Of Plastics Or The Like (AREA)

Abstract

PURPOSE:To reduce cost by forming a magnet engagement part which is firmly engage with an annular polepiece on hardening of a resin magnet and inserting the annular polepiece into the annular cavity of a metal mold and pouring the resin magnet in molten state from a gate. CONSTITUTION:Since a plurality of circular holes h1 are formed on an annular polepiece 21, said polepiece 21 is inserted into the annular cavity 23 on a metal mold K, and the resin magnet in molten state is poured from a gate 24, and the both sides of the polepiece 21 are charged with the resin magnet passing through the circular holes h1, and the magnets are hardened. The hardened resin magnets 25 are connected at the circular part h1, and firmly joined on both surfaces or the polepiece 21. Therefore, a sealing member C1 can be obtained from the integral joining of the annular polepiece 21 and the hardened annular resin magnets 25.
JP62228573A 1987-09-14 1987-09-14 Manufacture of sealing member for sealing magnetic fluid Pending JPS6474362A (en)

Priority Applications (1)

Application Number Priority Date Filing Date Title
JP62228573A JPS6474362A (en) 1987-09-14 1987-09-14 Manufacture of sealing member for sealing magnetic fluid

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
JP62228573A JPS6474362A (en) 1987-09-14 1987-09-14 Manufacture of sealing member for sealing magnetic fluid

Publications (1)

Publication Number Publication Date
JPS6474362A true JPS6474362A (en) 1989-03-20

Family

ID=16878480

Family Applications (1)

Application Number Title Priority Date Filing Date
JP62228573A Pending JPS6474362A (en) 1987-09-14 1987-09-14 Manufacture of sealing member for sealing magnetic fluid

Country Status (1)

Country Link
JP (1) JPS6474362A (en)

Cited By (1)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
JPH0341274U (en) * 1989-08-31 1991-04-19

Cited By (1)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
JPH0341274U (en) * 1989-08-31 1991-04-19

Similar Documents

Publication Publication Date Title
JPS6474362A (en) Manufacture of sealing member for sealing magnetic fluid
JPS5712167A (en) Magnetic fluid sealing device
JPH01129741A (en) Magnet for rotor
JPS57197139A (en) Composite molding of metal plate and resin
EP0299353A3 (en) Method of making form elements for construction with permanent forms and elements made by same
JPS648850A (en) Manufacture of rotor
JPS5584640A (en) Production of anisotropic resin magnet
JPS6481634A (en) Manufacture of rotor
ES2113259A1 (en) Manufacture of simple mold for rubber crawler
JPS5785560A (en) Manufacture of rotor
JPS5424968A (en) Joining of resin to the inner surface of through-hole in metal plate
JPS5668254A (en) Rotor molding die for miniature motor of watch
JPS5854620A (en) Injection molding machine for plastic magnet
JPS53115439A (en) Friction disc of electromagnetic clutch and brake and its preparation
JPS61273920A (en) Injection molding method for molded products with embedded inserts
JPH0523307Y2 (en)
JPH0857824A (en) Method for shaping molding die
JPS5482607A (en) Rotor for inductor motor
JPS57207318A (en) Manufacture of magnetic circuit component part
JPS55115317A (en) Manufacturing method of anisotropic cylindrical polymeric magnet
JPS54138065A (en) Device for manufacturing plastic magnet
JPH07214281A (en) Insert device of magnetic material parts
JPS5763236A (en) Molding metal mold
JPS5963405U (en) plastic magnets
JPS55115316A (en) Manufacturing method of anisotropic cylindrical polymeric magnet