GB2014980A - Calibrating glass tube sections - Google Patents

Calibrating glass tube sections

Info

Publication number
GB2014980A
GB2014980A GB7906177A GB7906177A GB2014980A GB 2014980 A GB2014980 A GB 2014980A GB 7906177 A GB7906177 A GB 7906177A GB 7906177 A GB7906177 A GB 7906177A GB 2014980 A GB2014980 A GB 2014980A
Authority
GB
United Kingdom
Prior art keywords
tube section
calibration
glass
glass tube
tube sections
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.)
Withdrawn
Application number
GB7906177A
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.)
QVF GLASTECH GmbH
Original Assignee
QVF GLASTECH GmbH
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 QVF GLASTECH GmbH filed Critical QVF GLASTECH GmbH
Publication of GB2014980A publication Critical patent/GB2014980A/en
Withdrawn legal-status Critical Current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
    • C03B23/04—Re-forming tubes or rods
    • C03B23/055—Re-forming tubes or rods by rolling
    • C—CHEMISTRY; METALLURGY
    • C03—GLASS; MINERAL OR SLAG WOOL
    • C03B—MANUFACTURE, SHAPING, OR SUPPLEMENTARY PROCESSES
    • C03B23/00—Re-forming shaped glass
    • C03B23/04—Re-forming tubes or rods
    • C03B23/049—Re-forming tubes or rods by pressing
    • C03B23/0496—Re-forming tubes or rods by pressing for expanding in a radial way, e.g. by forcing a mandrel through a tube or rod

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

The invention relates to a calibration technique in which a glass tube section is heated to a softening temperature, is reshaped to a required dimension and is then allowed to cool. According to the invention the tube section 3 is gripped by rotatable clamps 1 and heated by a device 2. A shaping member 6 is then used to press the softened glass against a calibration surface 4. The surface 4 and member 6 can be moved axially while the tube section 3 is rotated by the clamps 1 so that the surface 4 and member 6 move spirally or helically with respect to the glass. If external calibration is required, the shaping member can be arranged inside the tube section with the calibration surface outside the tube section. The invention makes it possible to calibrate, with acceptable tolerances, glass tube sections having larger diameters than the maximum diameters which can be accurately calibrated using existing methods and equipment. <IMAGE>
GB7906177A 1978-02-22 1979-02-21 Calibrating glass tube sections Withdrawn GB2014980A (en)

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
DE19782807596 DE2807596A1 (en) 1978-02-22 1978-02-22 METHOD AND DEVICE FOR CALIBRATING GLASS TUBE SECTIONS

Publications (1)

Publication Number Publication Date
GB2014980A true GB2014980A (en) 1979-09-05

Family

ID=6032668

Family Applications (1)

Application Number Title Priority Date Filing Date
GB7906177A Withdrawn GB2014980A (en) 1978-02-22 1979-02-21 Calibrating glass tube sections

Country Status (4)

Country Link
JP (1) JPS54158427A (en)
DE (1) DE2807596A1 (en)
FR (1) FR2418207A1 (en)
GB (1) GB2014980A (en)

Families Citing this family (3)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
DD233747A3 (en) * 1983-04-11 1986-03-12 Komb Feinmechanische Werke Hal METHOD AND DEVICE FOR PRODUCING A TRANSVERSAL EMBROIDERED OR RIBBED INTERNAL TUBE OF A DOUBLE-WALL SPECIAL GAS DISCHARGE TUBE HIGH ANGLE ELECTIVITY
DE3942566A1 (en) * 1989-12-22 1991-07-04 Schott Glaswerke METHOD AND DEVICE FOR THE EXTERNAL CALIBRATION OF GLASS TUBE SECTIONS
US6314765B1 (en) * 1998-10-06 2001-11-13 Alcatel Method and apparatus for controlling the shape and position of a deformable object

Also Published As

Publication number Publication date
JPS54158427A (en) 1979-12-14
DE2807596A1 (en) 1979-08-30
FR2418207A1 (en) 1979-09-21

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Legal Events

Date Code Title Description
WAP Application withdrawn, taken to be withdrawn or refused ** after publication under section 16(1)