JPS56130802A - Tone arm constituent - Google Patents

Tone arm constituent

Info

Publication number
JPS56130802A
JPS56130802A JP3336380A JP3336380A JPS56130802A JP S56130802 A JPS56130802 A JP S56130802A JP 3336380 A JP3336380 A JP 3336380A JP 3336380 A JP3336380 A JP 3336380A JP S56130802 A JPS56130802 A JP S56130802A
Authority
JP
Japan
Prior art keywords
mold
polyvinyl chloride
mixed
resin
tone arm
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
JP3336380A
Other languages
Japanese (ja)
Inventor
Nobuhiro Tsukagoshi
Shinichi Yokozeki
Sumio Hagiwara
Masataka Uchitoi
Toshikazu Yoshino
Yasuyuki Arai
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.)
Pioneer Corp
Original Assignee
Pioneer Electronic 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 Pioneer Electronic Corp filed Critical Pioneer Electronic Corp
Priority to JP3336380A priority Critical patent/JPS56130802A/en
Priority to GB8107439A priority patent/GB2072211A/en
Publication of JPS56130802A publication Critical patent/JPS56130802A/en
Pending legal-status Critical Current

Links

Classifications

    • B—PERFORMING OPERATIONS; TRANSPORTING
    • B29—WORKING OF PLASTICS; WORKING OF SUBSTANCES IN A PLASTIC STATE IN GENERAL
    • B29C—SHAPING OR JOINING OF PLASTICS; SHAPING OF MATERIAL IN A PLASTIC STATE, NOT OTHERWISE PROVIDED FOR; AFTER-TREATMENT OF THE SHAPED PRODUCTS, e.g. REPAIRING
    • B29C70/00—Shaping composites, i.e. plastics material comprising reinforcements, fillers or preformed parts, e.g. inserts
    • B29C70/58—Shaping composites, i.e. plastics material comprising reinforcements, fillers or preformed parts, e.g. inserts comprising fillers only, e.g. particles, powder, beads, flakes, spheres
    • B29C70/62—Shaping composites, i.e. plastics material comprising reinforcements, fillers or preformed parts, e.g. inserts comprising fillers only, e.g. particles, powder, beads, flakes, spheres the filler being oriented during moulding
    • B—PERFORMING OPERATIONS; TRANSPORTING
    • B29—WORKING OF PLASTICS; WORKING OF SUBSTANCES IN A PLASTIC STATE IN GENERAL
    • B29C—SHAPING OR JOINING OF PLASTICS; SHAPING OF MATERIAL IN A PLASTIC STATE, NOT OTHERWISE PROVIDED FOR; AFTER-TREATMENT OF THE SHAPED PRODUCTS, e.g. REPAIRING
    • B29C43/00—Compression moulding, i.e. applying external pressure to flow the moulding material; Apparatus therefor
    • B29C43/02—Compression moulding, i.e. applying external pressure to flow the moulding material; Apparatus therefor of articles of definite length, i.e. discrete articles
    • G—PHYSICS
    • G11—INFORMATION STORAGE
    • G11B—INFORMATION STORAGE BASED ON RELATIVE MOVEMENT BETWEEN RECORD CARRIER AND TRANSDUCER
    • G11B3/00—Recording by mechanical cutting, deforming or pressing, e.g. of grooves or pits; Reproducing by mechanical sensing; Record carriers therefor
    • G11B3/02—Arrangements of heads
    • G11B3/10—Arranging, supporting, or driving of heads or of transducers relatively to record carriers
    • G11B3/30—Supporting in an inoperative position
    • G11B3/31—Construction of arms
    • G—PHYSICS
    • G11—INFORMATION STORAGE
    • G11B—INFORMATION STORAGE BASED ON RELATIVE MOVEMENT BETWEEN RECORD CARRIER AND TRANSDUCER
    • G11B3/00—Recording by mechanical cutting, deforming or pressing, e.g. of grooves or pits; Reproducing by mechanical sensing; Record carriers therefor
    • G11B3/44—Styli, e.g. sapphire, diamond
    • G11B3/46—Constructions or forms ; Dispositions or mountings, e.g. attachment of point to shank
    • B—PERFORMING OPERATIONS; TRANSPORTING
    • B29—WORKING OF PLASTICS; WORKING OF SUBSTANCES IN A PLASTIC STATE IN GENERAL
    • B29K—INDEXING SCHEME ASSOCIATED WITH SUBCLASSES B29B, B29C OR B29D, RELATING TO MOULDING MATERIALS OR TO MATERIALS FOR MOULDS, REINFORCEMENTS, FILLERS OR PREFORMED PARTS, e.g. INSERTS
    • B29K2707/00—Use of elements other than metals for preformed parts, e.g. for inserts
    • B29K2707/04—Carbon
    • B—PERFORMING OPERATIONS; TRANSPORTING
    • B29—WORKING OF PLASTICS; WORKING OF SUBSTANCES IN A PLASTIC STATE IN GENERAL
    • B29L—INDEXING SCHEME ASSOCIATED WITH SUBCLASS B29C, RELATING TO PARTICULAR ARTICLES
    • B29L2023/00—Tubular articles
    • B—PERFORMING OPERATIONS; TRANSPORTING
    • B29—WORKING OF PLASTICS; WORKING OF SUBSTANCES IN A PLASTIC STATE IN GENERAL
    • B29L—INDEXING SCHEME ASSOCIATED WITH SUBCLASS B29C, RELATING TO PARTICULAR ARTICLES
    • B29L2031/00—Other particular articles
    • B29L2031/34—Electrical apparatus, e.g. sparking plugs or parts thereof
    • B29L2031/345—Accessories for radios, record players or the like

Landscapes

  • Engineering & Computer Science (AREA)
  • Mechanical Engineering (AREA)
  • Chemical & Material Sciences (AREA)
  • Composite Materials (AREA)
  • Compositions Of Macromolecular Compounds (AREA)
  • Soundproofing, Sound Blocking, And Sound Damping (AREA)

Abstract

PURPOSE: To improve the high internal loss and temperature resistance characteristics, by forming a tone arm with the kneading with the mixing material consisting of rubber material mixed to the mixture of postchlorinated polyvinyl chloride and polymethylmethacrylate or single postchlorinated polyvinyl chloride, and flake graphite powder.
CONSTITUTION: The resin material 1 added with rubber material as required, to the mixed resin material of postchlorinated polyvinyl chloride and polymethylmethacrylate or single postchlorinated polyvinyl chloride, and flake graphite powder 2 are mixed (mixing ratio is 10W90wt% graphite powder and 90W10wt% resin), and plasticizer and stabilizer are added as required. This is heated and mixed at 130W 180°C of softening and melting temperature of resin with kneader or roll. Further, the material 3 is put in the mold 4 corresponding to the shape of tone arm constituent, the mold 5 is fitted to the mold 4 and the material 3 is flowed to the corners of the molds 4, 5 through the pressure exerted under heating condition, and the molds 4, 5 are cooled to obtain the mold 6, e.g. head shell 7.
COPYRIGHT: (C)1981,JPO&Japio
JP3336380A 1980-03-18 1980-03-18 Tone arm constituent Pending JPS56130802A (en)

Priority Applications (2)

Application Number Priority Date Filing Date Title
JP3336380A JPS56130802A (en) 1980-03-18 1980-03-18 Tone arm constituent
GB8107439A GB2072211A (en) 1980-03-18 1981-03-10 Tone-arm elements

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
JP3336380A JPS56130802A (en) 1980-03-18 1980-03-18 Tone arm constituent

Publications (1)

Publication Number Publication Date
JPS56130802A true JPS56130802A (en) 1981-10-14

Family

ID=12384494

Family Applications (1)

Application Number Title Priority Date Filing Date
JP3336380A Pending JPS56130802A (en) 1980-03-18 1980-03-18 Tone arm constituent

Country Status (2)

Country Link
JP (1) JPS56130802A (en)
GB (1) GB2072211A (en)

Cited By (1)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US5425910A (en) * 1992-12-31 1995-06-20 A. R. Arena Products, Inc. Resin wall formation for collapsible shipping container

Families Citing this family (1)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US4766996A (en) * 1983-09-30 1988-08-30 Garrett Aerospace Rollers with oriented fiber reinforcement and method

Citations (1)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
JPS5528510A (en) * 1978-08-18 1980-02-29 Pioneer Electronic Corp Tone arm for record reproduction

Patent Citations (1)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
JPS5528510A (en) * 1978-08-18 1980-02-29 Pioneer Electronic Corp Tone arm for record reproduction

Cited By (1)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US5425910A (en) * 1992-12-31 1995-06-20 A. R. Arena Products, Inc. Resin wall formation for collapsible shipping container

Also Published As

Publication number Publication date
GB2072211A (en) 1981-09-30

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