| US 7,414,223 B2 | ||
| Method and apparatus for monitoring safety glass production or controlling a treatment process | ||
| Toivo Janhunen, Kangasala (Finland) | ||
| Assigned to Tamglass Ltd. Oy, Tampere (Finland) | ||
| Appl. No. 10/548,526 PCT Filed Mar. 11, 2004, PCT No. PCT/FI2004/050026 § 371(c)(1), (2), (4) Date Nov. 29, 2005, PCT Pub. No. WO2004/080905, PCT Pub. Date Sep. 23, 2004. |
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| Claims priority of application No. 20035031 (FI), filed on Mar. 12, 2003. | ||
| Prior Publication US 2006/0108346 A1, May 25, 2006 | ||
| Int. Cl. F27B 9/40 (2006.01); C03B 29/08 (2006.01); C03B 25/08 (2006.01); C03B 27/044 (2006.01); G01B 11/24 (2006.01) | ||
| U.S. Cl. 219—388 [219/400; 219/411; 219/502; 65/29.12; 65/29.14; 65/29.16; 65/377; 65/162] | 8 Claims |
| 1. A method for monitoring and controlling heat treatment in safety glass production, said method comprising:
conveying flat glass panels through at least one heat treatment, reading, prior to the heat treatment, information which represents
a load of glass panels and using the load information to control production or treatment parameters, wherein are the following
steps
applying high intensity light to a conveying plane, in which the load of glass panels travels towards a tempering or heat-strengthening
treatment, and load information is read by means of at least one camera, which is directed to see by way of a mirror the light
reflected from the glass, and the load information is used in the tempering or heat-strengthening treatment for controlling
both radiation heating and convection heating, and the load information is also utilized for monitoring the production of
glass and for recording data associated with production,
wherein the high intensity light is applied to the bottom surface of the conveying panel and the light reflected therefrom
is reflected with the mirror to the at least one camera positioned below the conveying plane.
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