JPS5651339A - Method and apparatus for injection molding of synthetic resin - Google Patents

Method and apparatus for injection molding of synthetic resin

Info

Publication number
JPS5651339A
JPS5651339A JP12678579A JP12678579A JPS5651339A JP S5651339 A JPS5651339 A JP S5651339A JP 12678579 A JP12678579 A JP 12678579A JP 12678579 A JP12678579 A JP 12678579A JP S5651339 A JPS5651339 A JP S5651339A
Authority
JP
Japan
Prior art keywords
pressure
cavities
plural
flow rate
heat medium
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
JP12678579A
Other languages
Japanese (ja)
Other versions
JPS6323897B2 (en
Inventor
Masao Takagi
Hiromi Horikawa
Moriji Kamoshita
Hisashi Nichibe
Terunori Maruyama
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 JP12678579A priority Critical patent/JPS5651339A/en
Publication of JPS5651339A publication Critical patent/JPS5651339A/en
Publication of JPS6323897B2 publication Critical patent/JPS6323897B2/ja
Granted legal-status Critical Current

Links

Abstract

PURPOSE: To obtain a proper molding continuously by regulating working oil and heat medium in the manufacture of a plural number of resin moldings by using molds with plural cavities.
CONSTITUTION: Using the mold 1 with plural cavities 3a, 3b, and 3c, plural resin moldings are injected concurrently. In this case, the pressure and flow rate of the working oil to be supplied to an injection cylinder 6 are controlled in such a way that the rising gradient of filling pressure in the filling process of molding resin into one cavity (or the main cavity, e.g., 3b) chosen as the main control target and also the falling gradient of pressure in the pressure-keeping process are kept at given set values. At the same time, for the other cavities 3a and 3c, for example, the value of the falling gradient of pressure kept in the pressure-keeping process is continuously measured, and when the measured value exceeds an allowable set value, the flow rate of heat medium to the other cavities 3a and 3c, for example, is regulated.
COPYRIGHT: (C)1981,JPO&Japio
JP12678579A 1979-10-03 1979-10-03 Method and apparatus for injection molding of synthetic resin Granted JPS5651339A (en)

Priority Applications (1)

Application Number Priority Date Filing Date Title
JP12678579A JPS5651339A (en) 1979-10-03 1979-10-03 Method and apparatus for injection molding of synthetic resin

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
JP12678579A JPS5651339A (en) 1979-10-03 1979-10-03 Method and apparatus for injection molding of synthetic resin

Publications (2)

Publication Number Publication Date
JPS5651339A true JPS5651339A (en) 1981-05-08
JPS6323897B2 JPS6323897B2 (en) 1988-05-18

Family

ID=14943869

Family Applications (1)

Application Number Title Priority Date Filing Date
JP12678579A Granted JPS5651339A (en) 1979-10-03 1979-10-03 Method and apparatus for injection molding of synthetic resin

Country Status (1)

Country Link
JP (1) JPS5651339A (en)

Cited By (2)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
JP2002086500A (en) * 2000-09-12 2002-03-26 Futaba Corp Method and apparatus for detecting defective product, and molding apparatus
JP2021528285A (en) * 2018-06-22 2021-10-21 アイエムフラックス インコーポレイテッド Systems and approaches for controlling injection molding machines

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 (2)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
JP2002086500A (en) * 2000-09-12 2002-03-26 Futaba Corp Method and apparatus for detecting defective product, and molding apparatus
JP2021528285A (en) * 2018-06-22 2021-10-21 アイエムフラックス インコーポレイテッド Systems and approaches for controlling injection molding machines

Also Published As

Publication number Publication date
JPS6323897B2 (en) 1988-05-18

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