JPS57174829A - Detecting method of defective head of bulb encapsulator - Google Patents

Detecting method of defective head of bulb encapsulator

Info

Publication number
JPS57174829A
JPS57174829A JP5940181A JP5940181A JPS57174829A JP S57174829 A JPS57174829 A JP S57174829A JP 5940181 A JP5940181 A JP 5940181A JP 5940181 A JP5940181 A JP 5940181A JP S57174829 A JPS57174829 A JP S57174829A
Authority
JP
Japan
Prior art keywords
ring burner
flame port
bulb
inner pressure
encapsulator
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
JP5940181A
Other languages
Japanese (ja)
Inventor
Hiroyuki Maruyama
Fumio Tanabe
Mutsumi Hattori
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 Electric Corp
Original Assignee
Mitsubishi Electric Corp
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 Electric Corp filed Critical Mitsubishi Electric Corp
Priority to JP5940181A priority Critical patent/JPS57174829A/en
Publication of JPS57174829A publication Critical patent/JPS57174829A/en
Pending legal-status Critical Current

Links

Classifications

    • H—ELECTRICITY
    • H01—ELECTRIC ELEMENTS
    • H01J—ELECTRIC DISCHARGE TUBES OR DISCHARGE LAMPS
    • H01J9/00—Apparatus or processes specially adapted for the manufacture, installation, removal, maintenance of electric discharge tubes, discharge lamps, or parts thereof; Recovery of material from discharge tubes or lamps
    • H01J9/42—Measurement or testing during manufacture

Landscapes

  • Engineering & Computer Science (AREA)
  • Manufacturing & Machinery (AREA)
  • Manufacture Of Electron Tubes, Discharge Lamp Vessels, Lead-In Wires, And The Like (AREA)

Abstract

PURPOSE:To prevent the deterioration of the production yield of the fluorescent lamp, by measuring the inner pressure of a ring burner thereby detecting the abnormality such as the choking of the flame port of a ring burner in the early time. CONSTITUTION:At the thermal encapsulating position, a bulb 14 and a stem 9 are encapsulated by the flame through a flame port 16 to be produced when the burning gas is burnt by a ring burner 7. When a encapsulating head 2 passed through said position will reach to the inner pressure measuring position, the compressed air is fed through a piping 11 to the ring burner 7 and ejected through the flame port 16 of the ring burner 7. The pressure in the piping 11 is measured by a sensor 12 and collected in a data logger 17 then the inner pressure for every rotation is compared to detect the abnormality of the ring burner 7 such as the choking of the flame port 16.
JP5940181A 1981-04-20 1981-04-20 Detecting method of defective head of bulb encapsulator Pending JPS57174829A (en)

Priority Applications (1)

Application Number Priority Date Filing Date Title
JP5940181A JPS57174829A (en) 1981-04-20 1981-04-20 Detecting method of defective head of bulb encapsulator

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
JP5940181A JPS57174829A (en) 1981-04-20 1981-04-20 Detecting method of defective head of bulb encapsulator

Publications (1)

Publication Number Publication Date
JPS57174829A true JPS57174829A (en) 1982-10-27

Family

ID=13112213

Family Applications (1)

Application Number Title Priority Date Filing Date
JP5940181A Pending JPS57174829A (en) 1981-04-20 1981-04-20 Detecting method of defective head of bulb encapsulator

Country Status (1)

Country Link
JP (1) JPS57174829A (en)

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