JPS55162696A - Manufacture for speaker diaphragm plate - Google Patents

Manufacture for speaker diaphragm plate

Info

Publication number
JPS55162696A
JPS55162696A JP7150879A JP7150879A JPS55162696A JP S55162696 A JPS55162696 A JP S55162696A JP 7150879 A JP7150879 A JP 7150879A JP 7150879 A JP7150879 A JP 7150879A JP S55162696 A JPS55162696 A JP S55162696A
Authority
JP
Japan
Prior art keywords
mold
air
jetting
air hole
film
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
JP7150879A
Other languages
Japanese (ja)
Inventor
Seiichi Tanaka
Kazuro Okuzawa
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.)
Panasonic Holdings Corp
Original Assignee
Matsushita Electric Industrial 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 Matsushita Electric Industrial Co Ltd filed Critical Matsushita Electric Industrial Co Ltd
Priority to JP7150879A priority Critical patent/JPS55162696A/en
Publication of JPS55162696A publication Critical patent/JPS55162696A/en
Pending legal-status Critical Current

Links

Classifications

    • H—ELECTRICITY
    • H04—ELECTRIC COMMUNICATION TECHNIQUE
    • H04R—LOUDSPEAKERS, MICROPHONES, GRAMOPHONE PICK-UPS OR LIKE ACOUSTIC ELECTROMECHANICAL TRANSDUCERS; DEAF-AID SETS; PUBLIC ADDRESS SYSTEMS
    • H04R31/00—Apparatus or processes specially adapted for the manufacture of transducers or diaphragms therefor
    • H04R31/003—Apparatus or processes specially adapted for the manufacture of transducers or diaphragms therefor for diaphragms or their outer suspension

Landscapes

  • Engineering & Computer Science (AREA)
  • Manufacturing & Machinery (AREA)
  • Physics & Mathematics (AREA)
  • Acoustics & Sound (AREA)
  • Signal Processing (AREA)
  • Blow-Moulding Or Thermoforming Of Plastics Or The Like (AREA)
  • Diaphragms For Electromechanical Transducers (AREA)

Abstract

PURPOSE:To perform the mold easily and with good accuracy for high efficiency, by holding the thermoplastic resin film excellent in heat resistance in a metal mold, by suctioning air from the air hole of lower mold with heating and molding through jetting from the air hole of upper mold. CONSTITUTION:The lower mold 10 is heated with the heater 14, polyparabanic acid film 17 is fed, the upper mold 15 is lowered and the circumference of the film 17 is clipped to soften the film, and molding is made by taking off the air in the mold concave 11 from the suction air hole 7 with a vacuum pump. In this case, air is jetted from the jetting air hole 16 of the upper mold 15 to perform the finished mold. The mutual operation of jetting and suction increases the shortening of the mold time and the accuracy of shape, and the air pressure for jetting and suction is 3kg/cm<2> or more. Thus, the diaphragm plate small in the mass can be obtained in excellent quality.
JP7150879A 1979-06-06 1979-06-06 Manufacture for speaker diaphragm plate Pending JPS55162696A (en)

Priority Applications (1)

Application Number Priority Date Filing Date Title
JP7150879A JPS55162696A (en) 1979-06-06 1979-06-06 Manufacture for speaker diaphragm plate

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
JP7150879A JPS55162696A (en) 1979-06-06 1979-06-06 Manufacture for speaker diaphragm plate

Publications (1)

Publication Number Publication Date
JPS55162696A true JPS55162696A (en) 1980-12-18

Family

ID=13462697

Family Applications (1)

Application Number Title Priority Date Filing Date
JP7150879A Pending JPS55162696A (en) 1979-06-06 1979-06-06 Manufacture for speaker diaphragm plate

Country Status (1)

Country Link
JP (1) JPS55162696A (en)

Cited By (4)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
JPS5869198A (en) * 1981-10-21 1983-04-25 Onkyo Corp Forming method of cone type diaphragm
JPS6033799A (en) * 1983-08-04 1985-02-21 Onkyo Corp Plastic diaphragm and its manufacture
JPS60102094A (en) * 1983-11-08 1985-06-06 Matsushita Electric Ind Co Ltd Manufacture of diaphragm for flat speaker
WO2006001292A1 (en) * 2004-06-28 2006-01-05 Matsushita Electric Industrial Co., Ltd. Production facility for speaker diaphragm, method of manufacturing speaker diaphragm using the production facility, and speaker diaphragm

Cited By (5)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
JPS5869198A (en) * 1981-10-21 1983-04-25 Onkyo Corp Forming method of cone type diaphragm
JPH0237760B2 (en) * 1981-10-21 1990-08-27 Onkyo Kk
JPS6033799A (en) * 1983-08-04 1985-02-21 Onkyo Corp Plastic diaphragm and its manufacture
JPS60102094A (en) * 1983-11-08 1985-06-06 Matsushita Electric Ind Co Ltd Manufacture of diaphragm for flat speaker
WO2006001292A1 (en) * 2004-06-28 2006-01-05 Matsushita Electric Industrial Co., Ltd. Production facility for speaker diaphragm, method of manufacturing speaker diaphragm using the production facility, and speaker diaphragm

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