JPH0270417A - Injection molding machine - Google Patents

Injection molding machine

Info

Publication number
JPH0270417A
JPH0270417A JP17869687A JP17869687A JPH0270417A JP H0270417 A JPH0270417 A JP H0270417A JP 17869687 A JP17869687 A JP 17869687A JP 17869687 A JP17869687 A JP 17869687A JP H0270417 A JPH0270417 A JP H0270417A
Authority
JP
Japan
Prior art keywords
pressure
hydraulic pressure
mold
injection hydraulic
resin
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
JP17869687A
Other languages
Japanese (ja)
Other versions
JPH0367854B2 (en
Inventor
Shigetaka Shioda
Katsuyoshi Shimodaira
Kiyoshi Kinoshita
Hiroshi Asai
Hiroharu Kato
Norikazu Kuroda
Toshio Kishigami
Original Assignee
Mitsubishi Heavy Ind 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 Mitsubishi Heavy Ind Ltd filed Critical Mitsubishi Heavy Ind Ltd
Priority to JP17869687A priority Critical patent/JPH0367854B2/ja
Publication of JPH0270417A publication Critical patent/JPH0270417A/en
Publication of JPH0367854B2 publication Critical patent/JPH0367854B2/ja
Expired legal-status Critical Current

Links

Classifications

    • BPERFORMING OPERATIONS; TRANSPORTING
    • B29WORKING OF PLASTICS; WORKING OF SUBSTANCES IN A PLASTIC STATE IN GENERAL
    • B29CSHAPING OR JOINING OF PLASTICS; SHAPING OF MATERIAL IN A PLASTIC STATE, NOT OTHERWISE PROVIDED FOR; AFTER-TREATMENT OF THE SHAPED PRODUCTS, e.g. REPAIRING
    • B29C45/00Injection moulding, i.e. forcing the required volume of moulding material through a nozzle into a closed mould; Apparatus therefor
    • B29C45/17Component parts, details or accessories; Auxiliary operations
    • B29C45/76Measuring, controlling or regulating
    • B29C45/77Measuring, controlling or regulating of velocity or pressure of moulding material

Abstract

PURPOSE:To prevent injection hydraulic pressure from changing over in the state that resin is not filled yet in a mold by setting a screw reaching the preset position when the pressure in a mold is controlled with injection hydraulic pressure and changing over the injection hydraulic pressure from high pressure to low pressure when the injection hydraulic pressure reaches the set value. CONSTITUTION:When a screw 1 moves forward are resin is filled in a mold 5, the resin fed into the mold 5 thereafter compresses the resin in the mold 5 to rise injection hydraulic pressure suddenly. When the injection hydraulic pressure rises up to the hydraulic pressure Pc set in a setting device 11 at the point D, a signal is transmitted from a comparison device 12 to a sequence controller 13. At that time, as the screw 1 already reaches the point D, the signal from a comparison device 15 is also transmitted to the sequence controller 13, and a signal is issued from the sequence controller 13 to an electromagnetic proportional pressure valve 8, and the set pressure of the electromagnetic proportional pressure valve 8 is changed over to low pressure Pk and the injection hydraulic pressure is also changed over to Pk.
JP17869687A 1987-07-17 1987-07-17 Expired JPH0367854B2 (en)

Priority Applications (1)

Application Number Priority Date Filing Date Title
JP17869687A JPH0367854B2 (en) 1987-07-17 1987-07-17

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
JP17869687A JPH0367854B2 (en) 1987-07-17 1987-07-17

Related Parent Applications (1)

Application Number Title Priority Date Filing Date
JP51120924A Division JPS6139175B2 (en) 1976-10-08 1976-10-08

Publications (2)

Publication Number Publication Date
JPH0270417A true JPH0270417A (en) 1990-03-09
JPH0367854B2 JPH0367854B2 (en) 1991-10-24

Family

ID=16052953

Family Applications (1)

Application Number Title Priority Date Filing Date
JP17869687A Expired JPH0367854B2 (en) 1987-07-17 1987-07-17

Country Status (1)

Country Link
JP (1) JPH0367854B2 (en)

Also Published As

Publication number Publication date
JPH0367854B2 (en) 1991-10-24

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