JPS5562815A - Press molding method for thick optical glass molding - Google Patents

Press molding method for thick optical glass molding

Info

Publication number
JPS5562815A
JPS5562815A JP13573778A JP13573778A JPS5562815A JP S5562815 A JPS5562815 A JP S5562815A JP 13573778 A JP13573778 A JP 13573778A JP 13573778 A JP13573778 A JP 13573778A JP S5562815 A JPS5562815 A JP S5562815A
Authority
JP
Japan
Prior art keywords
gob
mold
heated
glass
molding
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.)
Granted
Application number
JP13573778A
Other languages
Japanese (ja)
Other versions
JPS6138130B2 (en
Inventor
Takeyoshi Hiramoto
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.)
OBARA OPTICAL GLASS
Ohara Inc
Original Assignee
OBARA OPTICAL GLASS
Ohara 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 OBARA OPTICAL GLASS, Ohara Inc filed Critical OBARA OPTICAL GLASS
Priority to JP13573778A priority Critical patent/JPS5562815A/en
Publication of JPS5562815A publication Critical patent/JPS5562815A/en
Publication of JPS6138130B2 publication Critical patent/JPS6138130B2/ja
Granted legal-status Critical Current

Links

Classifications

    • C—CHEMISTRY; METALLURGY
    • C03—GLASS; MINERAL OR SLAG WOOL
    • C03B—MANUFACTURE, SHAPING, OR SUPPLEMENTARY PROCESSES
    • C03B11/00—Pressing molten glass or performed glass reheated to equivalent low viscosity without blowing
    • C03B11/02—Pressing molten glass or performed glass reheated to equivalent low viscosity without blowing in machines with rotary tables
    • C—CHEMISTRY; METALLURGY
    • C03—GLASS; MINERAL OR SLAG WOOL
    • C03B—MANUFACTURE, SHAPING, OR SUPPLEMENTARY PROCESSES
    • C03B11/00—Pressing molten glass or performed glass reheated to equivalent low viscosity without blowing
    • C03B11/06—Construction of plunger or mould
    • C03B11/08—Construction of plunger or mould for making solid articles, e.g. lenses
    • C—CHEMISTRY; METALLURGY
    • C03—GLASS; MINERAL OR SLAG WOOL
    • C03B—MANUFACTURE, SHAPING, OR SUPPLEMENTARY PROCESSES
    • C03B19/00—Other methods of shaping glass
    • C03B19/02—Other methods of shaping glass by casting molten glass, e.g. injection moulding
    • C—CHEMISTRY; METALLURGY
    • C03—GLASS; MINERAL OR SLAG WOOL
    • C03B—MANUFACTURE, SHAPING, OR SUPPLEMENTARY PROCESSES
    • C03B7/00—Distributors for the molten glass; Means for taking-off charges of molten glass; Producing the gob, e.g. controlling the gob shape, weight or delivery tact
    • C03B7/10—Cutting-off or severing the glass flow with the aid of knives or scissors or non-contacting cutting means, e.g. a gas jet; Construction of the blades used
    • C—CHEMISTRY; METALLURGY
    • C03—GLASS; MINERAL OR SLAG WOOL
    • C03B—MANUFACTURE, SHAPING, OR SUPPLEMENTARY PROCESSES
    • C03B7/00—Distributors for the molten glass; Means for taking-off charges of molten glass; Producing the gob, e.g. controlling the gob shape, weight or delivery tact
    • C03B7/14—Transferring molten glass or gobs to glass blowing or pressing machines

Landscapes

  • Chemical & Material Sciences (AREA)
  • Engineering & Computer Science (AREA)
  • Materials Engineering (AREA)
  • Organic Chemistry (AREA)
  • Manufacturing & Machinery (AREA)
  • Glass Melting And Manufacturing (AREA)
  • Manufacture, Treatment Of Glass Fibers (AREA)

Abstract

PURPOSE: To efficiently obtain the title molding with no defect by preforming molten glass from a duct into a glass gob and sucking the top of the gob to transfer the gob into a heating furnace after which the gob is heated, supplied into a mold, and press molded.
CONSTITUTION: Molten glass flowing out of duct 1 is poured into the preforming mold consisting of lower mold 4 and barrel mold 5, cut with cutting edge 6, and supplied as glass gob 7.1 in order. Gob 7.1 is solidified in the vicinity of the contact part between molds 4, 5 during moving, forming preformed glass gob 7.2. At a taking-out position, suction cylinder 10 of a vacuum transfer unit is lowered to suck the central part of the top of gob 7.2, which is then suspended and heated in an electrically heating furnace to a predetermined state. By lowering cylinder 10 heated glass gob 7.2 is supplied into mold 14 for press molding, the top of gob 7.2 is rapidly heated, and upper mold 15 is lowered to obtain molding 7.3.
COPYRIGHT: (C)1980,JPO&Japio
JP13573778A 1978-11-06 1978-11-06 Press molding method for thick optical glass molding Granted JPS5562815A (en)

Priority Applications (1)

Application Number Priority Date Filing Date Title
JP13573778A JPS5562815A (en) 1978-11-06 1978-11-06 Press molding method for thick optical glass molding

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
JP13573778A JPS5562815A (en) 1978-11-06 1978-11-06 Press molding method for thick optical glass molding

Publications (2)

Publication Number Publication Date
JPS5562815A true JPS5562815A (en) 1980-05-12
JPS6138130B2 JPS6138130B2 (en) 1986-08-27

Family

ID=15158684

Family Applications (1)

Application Number Title Priority Date Filing Date
JP13573778A Granted JPS5562815A (en) 1978-11-06 1978-11-06 Press molding method for thick optical glass molding

Country Status (1)

Country Link
JP (1) JPS5562815A (en)

Cited By (6)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
JPS5884134A (en) * 1981-10-30 1983-05-20 コ−ニング　グラス　ワ−クス Formation of precision glass product
JPS62246831A (en) * 1986-04-21 1987-10-28 Hitachi Ltd Mold-release device for press-molded article of glass
KR100446051B1 (en) * 1999-06-29 2004-08-30 호야 가부시키가이샤 Method of producing glass products, method of producing press-molded products, and apparatus for producing glass mass products
KR100462935B1 (en) * 1998-12-09 2004-12-23 호야 가부시키가이샤 Method and apparatus for press molding a glass product
JP2008094654A (en) * 2006-10-11 2008-04-24 Konica Minolta Opto Inc Method and apparatus for manufacturing optical element
EP1757563A3 (en) * 2005-08-26 2008-07-02 Schott AG Process of making a glass gob

Cited By (9)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
JPS5884134A (en) * 1981-10-30 1983-05-20 コ−ニング　グラス　ワ−クス Formation of precision glass product
JPS6132263B2 (en) * 1981-10-30 1986-07-25 Corning Glass Works
JPS62246831A (en) * 1986-04-21 1987-10-28 Hitachi Ltd Mold-release device for press-molded article of glass
JPH0572334B2 (en) * 1986-04-21 1993-10-12 Hitachi Ltd
KR100462935B1 (en) * 1998-12-09 2004-12-23 호야 가부시키가이샤 Method and apparatus for press molding a glass product
KR100446051B1 (en) * 1999-06-29 2004-08-30 호야 가부시키가이샤 Method of producing glass products, method of producing press-molded products, and apparatus for producing glass mass products
EP1757563A3 (en) * 2005-08-26 2008-07-02 Schott AG Process of making a glass gob
DE102005041033B4 (en) * 2005-08-26 2010-10-28 Schott Ag Process for producing a pressed glass product
JP2008094654A (en) * 2006-10-11 2008-04-24 Konica Minolta Opto Inc Method and apparatus for manufacturing optical element

Also Published As

Publication number Publication date
JPS6138130B2 (en) 1986-08-27

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