JPS60204195A - Acoustic device member and its manufacture - Google Patents

Acoustic device member and its manufacture

Info

Publication number
JPS60204195A
JPS60204195A JP5962984A JP5962984A JPS60204195A JP S60204195 A JPS60204195 A JP S60204195A JP 5962984 A JP5962984 A JP 5962984A JP 5962984 A JP5962984 A JP 5962984A JP S60204195 A JPS60204195 A JP S60204195A
Authority
JP
Grant status
Application
Patent type
Prior art keywords
material
resin material
metallic die
manufacture
vibration proof
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
JP5962984A
Inventor
Osamu Hasegawa
Shiro Iwakura
Yoshio Sakamoto
Original Assignee
Trio Kenwood 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

Links

Classifications

    • BPERFORMING OPERATIONS; TRANSPORTING
    • B29WORKING OF PLASTICS; WORKING OF SUBSTANCES IN A PLASTIC STATE, IN GENERAL
    • B29CSHAPING OR JOINING OF PLASTICS; SHAPING OF MATERIAL IN A PLASTIC STATE, NOT OTHERWISE PROVIDED FOR; AFTER-TREATMENT OF THE SHAPED PRODUCTS, e.g. REPAIRING
    • B29C45/00Injection moulding, i.e. forcing the required volume of moulding material through a nozzle into a closed mould; Apparatus therefor
    • B29C45/17Component parts, details or accessories; Auxiliary operations
    • B29C45/1703Introducing an auxiliary fluid into the mould
    • B29C45/1704Introducing an auxiliary fluid into the mould the fluid being introduced into the interior of the injected material which is still in a molten state, e.g. for producing hollow articles
    • BPERFORMING OPERATIONS; TRANSPORTING
    • B29WORKING OF PLASTICS; WORKING OF SUBSTANCES IN A PLASTIC STATE, IN GENERAL
    • B29CSHAPING OR JOINING OF PLASTICS; SHAPING OF MATERIAL IN A PLASTIC STATE, NOT OTHERWISE PROVIDED FOR; AFTER-TREATMENT OF THE SHAPED PRODUCTS, e.g. REPAIRING
    • B29C45/00Injection moulding, i.e. forcing the required volume of moulding material through a nozzle into a closed mould; Apparatus therefor
    • B29C45/16Making multilayered or multicoloured articles
    • HELECTRICITY
    • H04ELECTRIC COMMUNICATION TECHNIQUE
    • H04RLOUDSPEAKERS, MICROPHONES, GRAMOPHONE PICK-UPS OR LIKE ACOUSTIC ELECTROMECHANICAL TRANSDUCERS; DEAF-AID SETS; PUBLIC ADDRESS SYSTEMS
    • H04R7/00Diaphragms for electromechanical transducers; Cones
    • H04R7/02Diaphragms for electromechanical transducers; Cones characterised by the construction
    • BPERFORMING OPERATIONS; TRANSPORTING
    • B29WORKING OF PLASTICS; WORKING OF SUBSTANCES IN A PLASTIC STATE, IN GENERAL
    • B29CSHAPING OR JOINING OF PLASTICS; SHAPING OF MATERIAL IN A PLASTIC STATE, NOT OTHERWISE PROVIDED FOR; AFTER-TREATMENT OF THE SHAPED PRODUCTS, e.g. REPAIRING
    • B29C45/00Injection moulding, i.e. forcing the required volume of moulding material through a nozzle into a closed mould; Apparatus therefor
    • B29C45/17Component parts, details or accessories; Auxiliary operations
    • B29C45/1703Introducing an auxiliary fluid into the mould
    • B29C45/1704Introducing an auxiliary fluid into the mould the fluid being introduced into the interior of the injected material which is still in a molten state, e.g. for producing hollow articles
    • B29C2045/1715Filled hollows

Abstract

PURPOSE:To manufacture an acoustic device member with light weight, large strength and excellent vibration proof characteristic by injecting a resin material having the vibration proof characteristic into a resin material molded in a metallic die. CONSTITUTION:A male metallic die 4, a female metallic die 5 and an injection nozzle 7 are provided. The resin material 2 is injected to a space 6 between the dies 4, 5 from the nozzle 7 so as to expand the material 2 into the space 6. A gas 8 is jetted into the material 2 and after lots of ribs are formed and the internal gas 8 is extracted. Then the resin material 3 having the vibration proof characteristic is injected into the rib from the nozzle 7, and after the material 3 is filled in, and the molding is finished by removing the male metallic die 4.
JP5962984A 1984-03-29 1984-03-29 Acoustic device member and its manufacture Pending JPS60204195A (en)

Priority Applications (1)

Application Number Priority Date Filing Date Title
JP5962984A JPS60204195A (en) 1984-03-29 1984-03-29 Acoustic device member and its manufacture

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
JP5962984A JPS60204195A (en) 1984-03-29 1984-03-29 Acoustic device member and its manufacture

Publications (1)

Publication Number Publication Date
JPS60204195A true true JPS60204195A (en) 1985-10-15

Family

ID=13118714

Family Applications (1)

Application Number Title Priority Date Filing Date
JP5962984A Pending JPS60204195A (en) 1984-03-29 1984-03-29 Acoustic device member and its manufacture

Country Status (1)

Country Link
JP (1) JPS60204195A (en)

Cited By (1)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
EP0552040A1 (en) * 1992-01-15 1993-07-21 Patrick Arthur Leach Method and apparatus for making a loudspeaker cone and surround assembly

Citations (1)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
JPS54128728A (en) * 1978-03-30 1979-10-05 Asahi Chem Ind Co Ltd Structure for acoustic device and production thereof

Patent Citations (1)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
JPS54128728A (en) * 1978-03-30 1979-10-05 Asahi Chem Ind Co Ltd Structure for acoustic device and production thereof

Cited By (3)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
EP0552040A1 (en) * 1992-01-15 1993-07-21 Patrick Arthur Leach Method and apparatus for making a loudspeaker cone and surround assembly
GB2273678A (en) * 1992-01-15 1994-06-29 Patrick Arthur Leach Method and apparatus for making a loudspeaker cone and surround assembly
GB2273678B (en) * 1992-01-15 1995-05-03 Patrick Arthur Leach Method and apparatus for making a loudspeaker cone and surround assembly

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