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JPS6487320A - Mold monitoring device of injection molder - Google Patents

Mold monitoring device of injection molder

Info

Publication number
JPS6487320A
JPS6487320A JP62246836A JP24683687A JPS6487320A JP S6487320 A JPS6487320 A JP S6487320A JP 62246836 A JP62246836 A JP 62246836A JP 24683687 A JP24683687 A JP 24683687A JP S6487320 A JPS6487320 A JP S6487320A
Authority
JP
Japan
Prior art keywords
light
band
mold
light emitting
optical fibers
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
JP62246836A
Other languages
Japanese (ja)
Inventor
Yoshiyuki Arima
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.)
Nifco Inc
Original Assignee
Nifco Inc
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 Nifco Inc filed Critical Nifco Inc
Priority to JP62246836A priority Critical patent/JPS6487320A/en
Publication of JPS6487320A publication Critical patent/JPS6487320A/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
    • B29C45/84—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)
  • Geophysics And Detection Of Objects (AREA)
  • Moulds For Moulding Plastics Or The Like (AREA)
  • Injection Moulding Of Plastics Or The Like (AREA)

Abstract

PURPOSE:To surely detect residual item by a method wherein optical fibers on light emitting side are bundled at their one ends so as to make the incidence of light from a light emitting element possible and arranged in a band shape at their other ends and at the same time optical fibers on light receiving side are arranged in a band shape at their one ends and bundled at their other ends so as to detect the residual item in a mold by means of the band-shaped light. CONSTITUTION:The light, which is emitted from a light emitting diode 23 on light emitting side 21, is incident upon one end 11A of an optical fiber bundle 11 so as to be turned into the band-shaped light at the other end 11B in order to be irradiated to the other end 11B of the optical fibers on light receiving side 22. If residual items 28 present in a mold 27, a part of the band-shaped light is stopped. The output from the one end 11A on the light receiving side is received in the form of light by a phototransistor 25 so as to be inputted in a comparator in order to be compared with a reference level signal. If a controlling section judges the presence of the molded item left in the mold, the command inhibiting the transfer to the next cycle is issued.
JP62246836A 1987-09-30 1987-09-30 Mold monitoring device of injection molder Pending JPS6487320A (en)

Priority Applications (1)

Application Number Priority Date Filing Date Title
JP62246836A JPS6487320A (en) 1987-09-30 1987-09-30 Mold monitoring device of injection molder

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
JP62246836A JPS6487320A (en) 1987-09-30 1987-09-30 Mold monitoring device of injection molder

Publications (1)

Publication Number Publication Date
JPS6487320A true JPS6487320A (en) 1989-03-31

Family

ID=17154418

Family Applications (1)

Application Number Title Priority Date Filing Date
JP62246836A Pending JPS6487320A (en) 1987-09-30 1987-09-30 Mold monitoring device of injection molder

Country Status (1)

Country Link
JP (1) JPS6487320A (en)

Cited By (1)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US7271381B2 (en) 2003-08-19 2007-09-18 Minebea Co., Ltd. Device to detect individual moving objects having very small dimensions

Cited By (1)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US7271381B2 (en) 2003-08-19 2007-09-18 Minebea Co., Ltd. Device to detect individual moving objects having very small dimensions

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