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JPS5721806A - Forming method and device for drum-shaped core - Google Patents

Forming method and device for drum-shaped core

Info

Publication number
JPS5721806A
JPS5721806A JP9622780A JP9622780A JPS5721806A JP S5721806 A JPS5721806 A JP S5721806A JP 9622780 A JP9622780 A JP 9622780A JP 9622780 A JP9622780 A JP 9622780A JP S5721806 A JPS5721806 A JP S5721806A
Authority
JP
Japan
Prior art keywords
projection
cavity
collar
mold
outer 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
JP9622780A
Other languages
Japanese (ja)
Other versions
JPS6313325B2 (en
Inventor
Keiichi Motoyoshi
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.)
TDK Corp
Original Assignee
TDK Corp
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 TDK Corp filed Critical TDK Corp
Priority to JP9622780A priority Critical patent/JPS5721806A/en
Publication of JPS5721806A publication Critical patent/JPS5721806A/en
Publication of JPS6313325B2 publication Critical patent/JPS6313325B2/ja
Granted legal-status Critical Current

Links

Classifications

    • B—PERFORMING OPERATIONS; TRANSPORTING
    • B30—PRESSES
    • B30B—PRESSES IN GENERAL
    • B30B11/00—Presses specially adapted for forming shaped articles from material in particulate or plastic state, e.g. briquetting presses, tabletting presses
    • B30B11/02—Presses specially adapted for forming shaped articles from material in particulate or plastic state, e.g. briquetting presses, tabletting presses using a ram exerting pressure on the material in a moulding space
    • B30B11/04—Presses specially adapted for forming shaped articles from material in particulate or plastic state, e.g. briquetting presses, tabletting presses using a ram exerting pressure on the material in a moulding space co-operating with a fixed mould
    • 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
    • H01F41/0206—Manufacturing of magnetic cores by mechanical means
    • H01F41/0246—Manufacturing of magnetic circuits by moulding or by pressing powder

Landscapes

  • Engineering & Computer Science (AREA)
  • Power Engineering (AREA)
  • Mechanical Engineering (AREA)
  • Manufacturing & Machinery (AREA)
  • Coils Or Transformers For Communication (AREA)

Abstract

PURPOSE:To reduce the number of steps of forming a drum-shaped core and to improve the yield of forming the core by filling material powder in a mold to form a projection in the center axial direction of the portion to become a collar, pressing only the projection in the middle moled and press molding it with outer mold disposed around the periphery. CONSTITUTION:Frame molds 10A, 10B divided, for example, into two are fromed in tapered shape on the outer peripheral surfaces, are then tightened integrally at both molds by a tapered ring 11 engaged with the molds, and a mortar 12 is formed. The mortar 12 forms a rolled core molding cavity 13, a large-diameter collar molding upper cavity 14A and a collar molding lower cavity 14B. An upper outer mold 21 is inserted from above to the cavity 14A, and a lower outer mold 31 is inserted from below to the cavity 14B, and a core having a projection at the center axial direction of the collar is formed. After the material powder is thrown from a throwing tube 15, an upper middle mold 22 is press-fitted from above, a lower middle mold 32 is press-fitted from below, into the upper outer mold 21 to upper projection and into the lower outer mold 31 to the lower projection, respectively to form a planar collar.
JP9622780A 1980-07-16 1980-07-16 Forming method and device for drum-shaped core Granted JPS5721806A (en)

Priority Applications (1)

Application Number Priority Date Filing Date Title
JP9622780A JPS5721806A (en) 1980-07-16 1980-07-16 Forming method and device for drum-shaped core

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
JP9622780A JPS5721806A (en) 1980-07-16 1980-07-16 Forming method and device for drum-shaped core

Publications (2)

Publication Number Publication Date
JPS5721806A true JPS5721806A (en) 1982-02-04
JPS6313325B2 JPS6313325B2 (en) 1988-03-25

Family

ID=14159338

Family Applications (1)

Application Number Title Priority Date Filing Date
JP9622780A Granted JPS5721806A (en) 1980-07-16 1980-07-16 Forming method and device for drum-shaped core

Country Status (1)

Country Link
JP (1) JPS5721806A (en)

Cited By (1)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US6205625B1 (en) 1998-07-06 2001-03-27 Emhart Inc. Weld stud

Cited By (1)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US6205625B1 (en) 1998-07-06 2001-03-27 Emhart Inc. Weld stud

Also Published As

Publication number Publication date
JPS6313325B2 (en) 1988-03-25

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