JPH0521053B2 - - Google Patents

Info

Publication number
JPH0521053B2
JPH0521053B2 JP21667784A JP21667784A JPH0521053B2 JP H0521053 B2 JPH0521053 B2 JP H0521053B2 JP 21667784 A JP21667784 A JP 21667784A JP 21667784 A JP21667784 A JP 21667784A JP H0521053 B2 JPH0521053 B2 JP H0521053B2
Authority
JP
Japan
Prior art keywords
punch
mold
lever
center hole
hydraulic cylinder
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.)
Expired - Lifetime
Application number
JP21667784A
Other languages
English (en)
Japanese (ja)
Other versions
JPS6194732A (ja
Inventor
Yasuhisa Kono
Ikuo Watanabe
Shunsuke Matsuda
Masaaki Haruhara
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 JP21667784A priority Critical patent/JPS6194732A/ja
Publication of JPS6194732A publication Critical patent/JPS6194732A/ja
Publication of JPH0521053B2 publication Critical patent/JPH0521053B2/ja
Granted 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
    • B29C45/00—Injection moulding, i.e. forcing the required volume of moulding material through a nozzle into a closed mould; Apparatus therefor
    • B29C45/17—Component parts, details or accessories; Auxiliary operations
    • B29C45/26—Moulds
    • B29C45/263—Moulds with mould wall parts provided with fine grooves or impressions, e.g. for record discs
    • 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
    • B29C45/00—Injection moulding, i.e. forcing the required volume of moulding material through a nozzle into a closed mould; Apparatus therefor
    • B29C45/17—Component parts, details or accessories; Auxiliary operations
    • B29C45/38—Cutting-off equipment for sprues or ingates

Landscapes

  • Engineering & Computer Science (AREA)
  • Manufacturing & Machinery (AREA)
  • Mechanical Engineering (AREA)
  • Moulds For Moulding Plastics Or The Like (AREA)
  • Manufacturing Optical Record Carriers (AREA)
JP21667784A 1984-10-16 1984-10-16 光学デイスク成形金型 Granted JPS6194732A (ja)

Priority Applications (1)

Application Number Priority Date Filing Date Title
JP21667784A JPS6194732A (ja) 1984-10-16 1984-10-16 光学デイスク成形金型

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
JP21667784A JPS6194732A (ja) 1984-10-16 1984-10-16 光学デイスク成形金型

Publications (2)

Publication Number Publication Date
JPS6194732A JPS6194732A (ja) 1986-05-13
JPH0521053B2 true JPH0521053B2 (enrdf_load_stackoverflow) 1993-03-23

Family

ID=16692191

Family Applications (1)

Application Number Title Priority Date Filing Date
JP21667784A Granted JPS6194732A (ja) 1984-10-16 1984-10-16 光学デイスク成形金型

Country Status (1)

Country Link
JP (1) JPS6194732A (enrdf_load_stackoverflow)

Also Published As

Publication number Publication date
JPS6194732A (ja) 1986-05-13

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