Vertical drawing method for producing a cylindrical glass body and device for carrying out said method
US7891213B2 · kind B2 · utility
Assignee
Inventors
Key dates
| Filing date | Nov 26, 2004 |
| Grant date | Feb 22, 2011 |
| Priority date | — |
| Expiry date | Jun 14, 2026 |
Classification
- Technology area (CPC C)Chemistry; Metallurgy
- CPC primaryC03B2205/46
- WIPO fieldOther special machines
- WIPO sectorMechanical engineering
Abstract
According to a known vertical drawing method for producing a cylindrical glass body, the cylinder longitudinal axis of the glass cylinder is adjusted by hand in relation to the longitudinal axis of a heating tube. The aim of the invention is to optimize the stability of said glass body. Said aim is achieved, whereby adjustment comprises the steps of detecting a value for a first radial x-y position of the cylinder longitudinal axis (16) of the glass cylinder (4) in a first horizontal detection plane (E1), drawing the glass cylinder (4), placed in the first x-y position, to form a test glass strand (10), measuring an actual state of a radial circular, or annular dimension of the test glass strand, determining a deviation between the actual state and a set state of said circular, or annular dimension with regard to the size and position thereof, while considering the position of the glass cylinder (4) in relation to the inner wall of the heating tube (1) during drawing, calculating a corrected x-y position of the cylinder longitudinal axis (16) by means of a correction factor (K), the value and position of the deviation, arranging the glass cylinder (4) into the heating tube (1), so …
Source: USPTO / EPO open patent data. Objective bibliographic and citation counts.