JPS5789937A - Controller for moving speed and revolution speed of screw in injection molding machine - Google Patents

Controller for moving speed and revolution speed of screw in injection molding machine

Info

Publication number
JPS5789937A
JPS5789937A JP16706980A JP16706980A JPS5789937A JP S5789937 A JPS5789937 A JP S5789937A JP 16706980 A JP16706980 A JP 16706980A JP 16706980 A JP16706980 A JP 16706980A JP S5789937 A JPS5789937 A JP S5789937A
Authority
JP
Japan
Prior art keywords
screw
speed
revolution speed
injection molding
molding machine
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
JP16706980A
Other languages
Japanese (ja)
Inventor
Toshio Inami
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.)
NIPPON SEIKOSHO KK
Japan Steel Works Ltd
Original Assignee
NIPPON SEIKOSHO KK
Japan Steel Works 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 NIPPON SEIKOSHO KK, Japan Steel Works Ltd filed Critical NIPPON SEIKOSHO KK
Priority to JP16706980A priority Critical patent/JPS5789937A/en
Publication of JPS5789937A publication Critical patent/JPS5789937A/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
    • 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 control an injection molding machine at low cost without using any pressure difference compensating mechanism by a method wherein detected values of the revolution speed and the moving speed of a screw are compared to signals fed from screw speed setters and the comparison results are fed back so as to make the detected values conform to the signals. CONSTITUTION:A signal b1 generated by a revolution speed detector 15 and corresponding to the revolution speed of the screw 5 is impressed on an amplifier 3, and the signal b from the setter 16 for the revolution speed of the screw is also impressed on the amplifier 3. The signals b, b1 are compared to each other in the amplifier 3, and an output signal d corresponding to the difference between the signals b, b1 is impressed on a coil 17 for a control valve 1a to control the revolution speed of the screw 5. Similarly, the linear moving speed of the screw 5 detected by a speed detector 12 is represented by a signal a1 and is feedback-controlled. Accordingly, the screw speed of the screw of an injection molding machine can be controlled at low cost without requiring any expensive pressure difference compensating mechanism.
JP16706980A 1980-11-26 1980-11-26 Controller for moving speed and revolution speed of screw in injection molding machine Pending JPS5789937A (en)

Priority Applications (1)

Application Number Priority Date Filing Date Title
JP16706980A JPS5789937A (en) 1980-11-26 1980-11-26 Controller for moving speed and revolution speed of screw in injection molding machine

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
JP16706980A JPS5789937A (en) 1980-11-26 1980-11-26 Controller for moving speed and revolution speed of screw in injection molding machine

Publications (1)

Publication Number Publication Date
JPS5789937A true JPS5789937A (en) 1982-06-04

Family

ID=15842823

Family Applications (1)

Application Number Title Priority Date Filing Date
JP16706980A Pending JPS5789937A (en) 1980-11-26 1980-11-26 Controller for moving speed and revolution speed of screw in injection molding machine

Country Status (1)

Country Link
JP (1) JPS5789937A (en)

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