JPS55161628A - Injection molding method - Google Patents

Injection molding method

Info

Publication number
JPS55161628A
JPS55161628A JP6887879A JP6887879A JPS55161628A JP S55161628 A JPS55161628 A JP S55161628A JP 6887879 A JP6887879 A JP 6887879A JP 6887879 A JP6887879 A JP 6887879A JP S55161628 A JPS55161628 A JP S55161628A
Authority
JP
Japan
Prior art keywords
pressure
cavities
resin
die
value
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
JP6887879A
Other languages
Japanese (ja)
Other versions
JPS6323896B2 (en
Inventor
Masao Takagi
Hisashi Nichibe
Terunori Maruyama
Moriji Kamoshita
Hiromi Horikawa
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.)
Hitachi Ltd
Original Assignee
Hitachi 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 Hitachi Ltd filed Critical Hitachi Ltd
Priority to JP6887879A priority Critical patent/JPS55161628A/en
Publication of JPS55161628A publication Critical patent/JPS55161628A/en
Publication of JPS6323896B2 publication Critical patent/JPS6323896B2/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
    • B29C45/76—Measuring, controlling or regulating

Landscapes

  • Engineering & Computer Science (AREA)
  • Manufacturing & Machinery (AREA)
  • Mechanical Engineering (AREA)
  • Injection Moulding Of Plastics Or The Like (AREA)

Abstract

PURPOSE:To eliminate a defective molding and improve an efficiency of molding in a die having a plurality of cavities therein by a method wherein a molding condition in each of the cavities is meausred and a temperature in the die is controlled based on said measured information. CONSTITUTION:Both an upper and lower limits of the most suitable resin charging pressure for each of the cavities 3a, 3b and 3c are predetermined in advance, and a charging step is transferred to a pressure keeping step when the resin pressure in said cavity satisfies said pressure range, the resin pressure in each of the cavities during the change-over of the charging step to the pressure keeping step is continuously stored for each of the forming cycles, and then the temperature in te respective cavity is independently controlled in response to the stored information of said resin pressure. The cavity pressure is measured by the pressure sensor 13, the pressure is changed to another value by means 14, while the changed value is compared with a standard pressure range setting value, and the value is applied from the controller 16 via power amplifier 17 to operate both the die temperature control valve 10 and the electro-hydraulic control valve 18.
JP6887879A 1979-06-04 1979-06-04 Injection molding method Granted JPS55161628A (en)

Priority Applications (1)

Application Number Priority Date Filing Date Title
JP6887879A JPS55161628A (en) 1979-06-04 1979-06-04 Injection molding method

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
JP6887879A JPS55161628A (en) 1979-06-04 1979-06-04 Injection molding method

Publications (2)

Publication Number Publication Date
JPS55161628A true JPS55161628A (en) 1980-12-16
JPS6323896B2 JPS6323896B2 (en) 1988-05-18

Family

ID=13386353

Family Applications (1)

Application Number Title Priority Date Filing Date
JP6887879A Granted JPS55161628A (en) 1979-06-04 1979-06-04 Injection molding method

Country Status (1)

Country Link
JP (1) JPS55161628A (en)

Cited By (3)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
JPS5871135A (en) * 1981-09-26 1983-04-27 エヌ　ベー　フイリップス　フルーイランペン　ファブリケン Method and device for optimizing injection molding process
JPS61295807A (en) * 1985-06-22 1986-12-26 株式会社フジクラ Formation cv cable connection
JP2002086500A (en) * 2000-09-12 2002-03-26 Futaba Corp Method and apparatus for detecting defective product, and molding apparatus

Citations (1)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
JPS5195459A (en) * 1975-02-18 1976-08-21 NETSUKASOSEIJUSHISEIKEISOCHI

Patent Citations (1)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
JPS5195459A (en) * 1975-02-18 1976-08-21 NETSUKASOSEIJUSHISEIKEISOCHI

Cited By (5)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
JPS5871135A (en) * 1981-09-26 1983-04-27 エヌ　ベー　フイリップス　フルーイランペン　ファブリケン Method and device for optimizing injection molding process
JPH0337493B2 (en) * 1981-09-26 1991-06-05 Fuiritsupusu Furuuiranpenfuaburiken Nv
JPS61295807A (en) * 1985-06-22 1986-12-26 株式会社フジクラ Formation cv cable connection
JPH0532968B2 (en) * 1985-06-22 1993-05-18 Fujikura Kk
JP2002086500A (en) * 2000-09-12 2002-03-26 Futaba Corp Method and apparatus for detecting defective product, and molding apparatus

Also Published As

Publication number Publication date
JPS6323896B2 (en) 1988-05-18

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