JPS55128440A - Controlling method for molding apparatus - Google Patents

Controlling method for molding apparatus

Info

Publication number
JPS55128440A
JPS55128440A JP3743979A JP3743979A JPS55128440A JP S55128440 A JPS55128440 A JP S55128440A JP 3743979 A JP3743979 A JP 3743979A JP 3743979 A JP3743979 A JP 3743979A JP S55128440 A JPS55128440 A JP S55128440A
Authority
JP
Japan
Prior art keywords
metal mold
photo
path
photoelectric conversion
conversion element
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
JP3743979A
Other languages
Japanese (ja)
Inventor
Shunichi Hashimoto
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.)
KINSEI KK
Original Assignee
KINSEI KK
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 KINSEI KK filed Critical KINSEI KK
Priority to JP3743979A priority Critical patent/JPS55128440A/en
Publication of JPS55128440A publication Critical patent/JPS55128440A/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
    • B29C45/7626—Measuring, controlling or regulating the ejection or removal of moulded articles

Landscapes

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

Abstract

PURPOSE:To prevent the damage of a metal mold and avoid the tie-up of a molding cycle by a method wherein a photo-path is provided along the surface of one metal mold of a forming apparatus and the completion of the release of a molded body from the metal mold is detected by a photoelectric conversion element provided for the photo-path so as to control the molding operation. CONSTITUTION:An injection molding apparatus consists of a fixed-side platen 1, a movable-side platen 2 reciprocated only at a stated stroke by a hydraulic system, a fixed metal mold 5, a movable metal mold 11 and others. On one metal mold, at least, a photo-path 12 is set in parallel with and near to the cavity surface of the movable metal mold 11, for example, and a photoelectric conversion element 14 to detect electrically the change of luminous energy of the photo-path 12 i.e. the interception of photo-beam thereof is provided. By this, whether the release of a molded body M from the metal mold 11 is completed or not is detected as a signal from the photoelectric conversion element 14 and the signal is supplied to a control circuit 20 to perform the control of the hydraulic system and, resultingly, of the molding operation.
JP3743979A 1979-03-29 1979-03-29 Controlling method for molding apparatus Pending JPS55128440A (en)

Priority Applications (1)

Application Number Priority Date Filing Date Title
JP3743979A JPS55128440A (en) 1979-03-29 1979-03-29 Controlling method for molding apparatus

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
JP3743979A JPS55128440A (en) 1979-03-29 1979-03-29 Controlling method for molding apparatus

Publications (1)

Publication Number Publication Date
JPS55128440A true JPS55128440A (en) 1980-10-04

Family

ID=12497534

Family Applications (1)

Application Number Title Priority Date Filing Date
JP3743979A Pending JPS55128440A (en) 1979-03-29 1979-03-29 Controlling method for molding apparatus

Country Status (1)

Country Link
JP (1) JPS55128440A (en)

Cited By (1)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
EP0191642A2 (en) * 1985-02-14 1986-08-20 Nifco Inc. Photoelectric monitor for mold

Cited By (1)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
EP0191642A2 (en) * 1985-02-14 1986-08-20 Nifco Inc. Photoelectric monitor for mold

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