JPS54124063A - Mold protection in press - Google Patents

Mold protection in press

Info

Publication number
JPS54124063A
JPS54124063A JP3211078A JP3211078A JPS54124063A JP S54124063 A JPS54124063 A JP S54124063A JP 3211078 A JP3211078 A JP 3211078A JP 3211078 A JP3211078 A JP 3211078A JP S54124063 A JPS54124063 A JP S54124063A
Authority
JP
Japan
Prior art keywords
value
pressure
mold
monitoring
mold closing
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
JP3211078A
Other languages
Japanese (ja)
Inventor
Norikazu Kuroda
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.)
Mitsubishi Heavy Industries Ltd
Original Assignee
Mitsubishi Heavy Industries 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 Industries Ltd filed Critical Mitsubishi Heavy Industries Ltd
Priority to JP3211078A priority Critical patent/JPS54124063A/en
Publication of JPS54124063A publication Critical patent/JPS54124063A/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
    • B29C45/7653—Measuring, controlling or regulating mould clamping forces
    • 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
    • B29C45/84—Safety devices
    • B29C45/844—Preventing damage caused by obstructions or foreign matter caught between mould halves during mould closing, e.g. moulded parts or runners

Landscapes

  • Engineering & Computer Science (AREA)
  • Manufacturing & Machinery (AREA)
  • Mechanical Engineering (AREA)
  • Control Of Presses (AREA)
  • Moulds For Moulding Plastics Or The Like (AREA)

Abstract

PURPOSE:To make it possible to set the protection pressure monitoring value simply with certainty without causing errors in setting, by making the maximum value of the mold closing pneumatic pressure, measured in the mold protection period, the monitoring pressure value in the next molding cycle. CONSTITUTION:A control unit reads the change in pressure of a booster cylinder, compares the mold closing pneumatic pressure measered in the mold protecting period with the monitoring value determined in the previous molding cycle, and gives an abnormal signal the moment the measured value exceeds the monitoring value. Thus, the mold closing operation is stopped. Only one easy steeing of the initial value permits the detection of abnormality with certainty earlier than the conventional method, and achieves an outstanding effect.
JP3211078A 1978-03-20 1978-03-20 Mold protection in press Pending JPS54124063A (en)

Priority Applications (1)

Application Number Priority Date Filing Date Title
JP3211078A JPS54124063A (en) 1978-03-20 1978-03-20 Mold protection in press

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
JP3211078A JPS54124063A (en) 1978-03-20 1978-03-20 Mold protection in press

Publications (1)

Publication Number Publication Date
JPS54124063A true JPS54124063A (en) 1979-09-26

Family

ID=12349751

Family Applications (1)

Application Number Title Priority Date Filing Date
JP3211078A Pending JPS54124063A (en) 1978-03-20 1978-03-20 Mold protection in press

Country Status (1)

Country Link
JP (1) JPS54124063A (en)

Cited By (3)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
JPS5976653A (en) * 1982-10-26 1984-05-01 Ube Ind Ltd Detection of abnormality in die clamping device for molding machine
JPH01113220A (en) * 1987-10-27 1989-05-01 Japan Steel Works Ltd:The Protection of mold in injection molding machine and protection device
CN108215106A (en) * 2018-03-22 2018-06-29 宁波弘讯科技股份有限公司 A kind of oil cylinder overshoot control method and injection mold

Cited By (4)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
JPS5976653A (en) * 1982-10-26 1984-05-01 Ube Ind Ltd Detection of abnormality in die clamping device for molding machine
JPH0228454B2 (en) * 1982-10-26 1990-06-25 Ube Industries
JPH01113220A (en) * 1987-10-27 1989-05-01 Japan Steel Works Ltd:The Protection of mold in injection molding machine and protection device
CN108215106A (en) * 2018-03-22 2018-06-29 宁波弘讯科技股份有限公司 A kind of oil cylinder overshoot control method and injection mold

Similar Documents

Publication Publication Date Title
SE393069B (en) BRAKE PRESSURE CONTROL VALVE UNIT IN A PNEUMATIC BRAKE SYSTEM
FR2324647A1 (en) LOW TEMPERATURE RUBBER VULCANIZATION PROCESS
GB1443139A (en) Press with hydraulic overload safety device and ram weight counter balancing mechanism
ZA751329B (en) Tire press and mold leakage control
BE868401A (en) PROCESS FOR MANUFACTURING SEQUENCE COPOLYMERS, RUBBER AND PRESSURE SENSITIVE ADHESIVES, PREPARED FROM THESE COPOLYMERS
JPS54124063A (en) Mold protection in press
CS182836B2 (en) Press,in particular for vulcanisation of tyres
ES419181A1 (en) Casting mould having a ventilation duct
EP0096183A3 (en) Method of protecting the moulds during injection moulding
JPS57142337A (en) Method and apparatus for automatically controlling injection molding
JPS53323A (en) Exhaust circulation control system
JPS6325935B2 (en)
JPS57142336A (en) Method and apparatus for measuring gate seal time in injection molding
JPS5581130A (en) Controller for injection molding machine
JPS56150520A (en) Abnormality detecting method for foam molding process
JPS5525388A (en) Improper mold detector for plastic injection molding machine
JPS53138467A (en) Plunger for transfer mold
JPS5769027A (en) Method of controlling removing time from mold in rim molding and apparatus therefor
JPS5787932A (en) Mold for injection compression molding
JPS5732922A (en) Method and device for mold attachment and clamp adjustment of injection molding machine
JPS53120769A (en) Injection control of injection molding machine
GB1002408A (en) An improved method and mechanism for injection moulding
JPH07137111A (en) Mold protecting method for injection molding machine
GB1333984A (en) Moulding presses
JPS5835468Y2 (en) Molding abnormality alarm device