JPS56140032A - Heater for bending glass plate - Google Patents

Heater for bending glass plate

Info

Publication number
JPS56140032A
JPS56140032A JP4115280A JP4115280A JPS56140032A JP S56140032 A JPS56140032 A JP S56140032A JP 4115280 A JP4115280 A JP 4115280A JP 4115280 A JP4115280 A JP 4115280A JP S56140032 A JPS56140032 A JP S56140032A
Authority
JP
Japan
Prior art keywords
heater
plate
glass plate
bending line
curved shape
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
JP4115280A
Other languages
Japanese (ja)
Other versions
JPS606290B2 (en
Inventor
Hiroshi Tsuji
Taichi Sakai
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.)
AGC Inc
Original Assignee
Asahi Glass Co 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 Asahi Glass Co Ltd filed Critical Asahi Glass Co Ltd
Priority to JP4115280A priority Critical patent/JPS606290B2/en
Publication of JPS56140032A publication Critical patent/JPS56140032A/en
Publication of JPS606290B2 publication Critical patent/JPS606290B2/en
Expired legal-status Critical Current

Links

Classifications

    • C—CHEMISTRY; METALLURGY
    • C03—GLASS; MINERAL OR SLAG WOOL
    • C03B—MANUFACTURE, SHAPING, OR SUPPLEMENTARY PROCESSES
    • C03B23/00—Re-forming shaped glass
    • C03B23/02—Re-forming glass sheets
    • C03B23/023—Re-forming glass sheets by bending
    • C03B23/025—Re-forming glass sheets by bending by gravity
    • C03B23/0258—Gravity bending involving applying local or additional heating, cooling or insulating means
    • C—CHEMISTRY; METALLURGY
    • C03—GLASS; MINERAL OR SLAG WOOL
    • C03B—MANUFACTURE, SHAPING, OR SUPPLEMENTARY PROCESSES
    • C03B23/00—Re-forming shaped glass
    • C03B23/02—Re-forming glass sheets
    • C03B23/023—Re-forming glass sheets by bending
    • C03B23/025—Re-forming glass sheets by bending by gravity
    • C03B23/027—Re-forming glass sheets by bending by gravity with moulds having at least two upward pivotable mould sections

Landscapes

  • Chemical & Material Sciences (AREA)
  • Engineering & Computer Science (AREA)
  • Materials Engineering (AREA)
  • Organic Chemistry (AREA)
  • Re-Forming, After-Treatment, Cutting And Transporting Of Glass Products (AREA)

Abstract

PURPOSE: To efficiently bend a glass plate at about 20W150R curvature along the desired bending line by locally heating the plate with a heater of a desired curved shape formed by attaching a resistance heating wire to an insulating heat-resistant member.
CONSTITUTION: Core metal 30 of a desired curved shape is enclosed with insulating heat-resistant rodlike body 31, and after arranging a pair of alumina rods 34, resistance heating wire 33 is spirally wound around the body 31 with a ceramic cushion material 32 in-between to form a heater having a plane radiating face A to a glass surface. The width of the effective radiating face is preferably about 3W50mm. Said heater is set over the glass plate mounted on bending dies preferably at about 2W50mm space along the bending line. The plate is preheated to about 640W670°C, and by supplying an electric current to the heater, the plate is locally heated to about 690W730°C and bent along the bending line.
COPYRIGHT: (C)1981,JPO&Japio
JP4115280A 1980-04-01 1980-04-01 Heating device for bending glass plates Expired JPS606290B2 (en)

Priority Applications (1)

Application Number Priority Date Filing Date Title
JP4115280A JPS606290B2 (en) 1980-04-01 1980-04-01 Heating device for bending glass plates

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
JP4115280A JPS606290B2 (en) 1980-04-01 1980-04-01 Heating device for bending glass plates

Publications (2)

Publication Number Publication Date
JPS56140032A true JPS56140032A (en) 1981-11-02
JPS606290B2 JPS606290B2 (en) 1985-02-16

Family

ID=12600439

Family Applications (1)

Application Number Title Priority Date Filing Date
JP4115280A Expired JPS606290B2 (en) 1980-04-01 1980-04-01 Heating device for bending glass plates

Country Status (1)

Country Link
JP (1) JPS606290B2 (en)

Cited By (1)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
JPS58120526A (en) * 1981-12-29 1983-07-18 Asahi Glass Co Ltd Bending method for glass blank for laminated glass

Cited By (2)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
JPS58120526A (en) * 1981-12-29 1983-07-18 Asahi Glass Co Ltd Bending method for glass blank for laminated glass
JPS6210932B2 (en) * 1981-12-29 1987-03-09 Asahi Glass Co Ltd

Also Published As

Publication number Publication date
JPS606290B2 (en) 1985-02-16

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