专利摘要:
In a device for hardening flat glass, the glass sheets (1) between a heating zone (2) and a quenching zone (3) are supported on both sides by air bearings. The nozzles (7) from which pressurized air exits to form the air bearings are skewed so as to face away from the heating zone (2) toward the quench zone (3), thereby preventing cooled air from the quench zone (FIG. 3) in the direction of the heating zone (2) flows.
公开号:AT510416A4
申请号:T542/2011
申请日:2011-04-18
公开日:2012-04-15
发明作者:Leopold Ing Mader
申请人:Inova Lisec Technologiezentrum;
IPC主号:
专利说明:

• · ♦ · · · · · · · · ··· *
The invention relates to a method and a device with which flat glass can be hardened.
The hardening of flat glass takes place in such a way that the glass is heated to a temperature above the hardening temperature (usually about 650 ° C.) and then quenched, so that this hardening stress arises in the glass. For the hardening of glass, many devices have become known, a problem regularly being to separate the heating zone from the quenching or cooling zone.
The invention is based on the object to suggest a simple and effective solution here.
This object is achieved by a method having the features of claim 1.
The object according to the invention is also achieved by a device which has the features of the independent claim directed to the device.
Preferred and advantageous embodiment of the invention are the subject of the dependent claims.
Since, in the procedure according to the invention, the flat glass emerging from the heating zone is supported on both sides by air bearings, not only is the effective separation between the heating and quenching zones ensured, but gentle transport of the heated glass sheet from the heating zone into the quench zone is ensured.
The separation of heating zone to cooling zone is particularly effective when the nozzles from which the gas exits the formation of the air bearings, are inclined so that they point away from the heating zone to the cooling zone. In addition, it can be provided in the invention that the nozzles for the quenching causing gas in the quenching zone are aligned so that they are directed to the nozzles for ds air bearings, wherein between the nozzles for forming the air bearings on the one hand and the nozzles on the other hand, a gap is provided for the formation of the quench zone, which allows the outflow of gas (usually air).
Further details and features of the invention will become apparent from the following description of a preferred embodiment of the invention with reference to the schematic drawing.
In the arrangement according to the invention, a glass sheet 1 from the heating zone 2, which is formed for example by a series of Keraruikdüsen from which heated gas (air) exits, directed in a quenching zone 3, which is formed from at least one pair of nozzles 4, the both sides of the transport path 5 of the glass sheet 1, which is to be hardened, are arranged and from which filled gas (air) exits. The nozzles 4 provided in the quench zone are adjustable transversely to the transport path 5 (arrows 6), so that the distance of the nozzles 4 from one another can be adapted to the thickness of the glass pane 1 to be hardened.
Between the heating zone 2, formed by ceramic nozzles on the one hand, and the quench zone 3, formed by at least one pair of quenching nozzles 4 on the other hand, according to the invention at least two opposing nozzles 7 (support nozzles) are provided, from which a gaseous medium (air) in the direction of the conveyor track 5 of the glass sheet 1, which is to be cured, emerges. The nozzles 7 are arranged transversely (arrows 8) to the transport path 4 of the glass pane 1 to be hardened. Thus, on both sides of the glass panes 1 arranged air bearings (each between a nozzle 7 and the glass pane 1) are formed.
The outlet openings 9 from which support nozzles 7, from which the gas (air) exits, forms the air bearing, are aligned so that they are inclined away from the heating zone 2. This prevents chilled gas from the quenching zone 3 for
Heating zone 2 flows towards and impairs their effectiveness.
In addition, it is achieved that the formed on both sides of the glass sheet 1 gas bearing {air bearings) by adjusting the nozzles 7 transverse to the conveying path 5 of the glass sheet 1 to be cured of the glass to a small distance from this, can be effectively formed.
In a preferred embodiment, these air bearings can also be formed between the glass pane 1 to be hardened and the quenching nozzles 4 (nozzles in the quench zone 3), by approximating them correspondingly to the glass pane 1.
Also, the outlet openings 10 in the nozzles 4 of the quench zone 3 are inclined to the plane of the transport path 5 and indeed so that they are inclined to the nozzles 7 for forming the air bearing. It can thus be achieved that gas (air) between the support nozzles 7 and the quenching nozzles 4 can flow outwards (arrows 11).
In practice, the operation of the device according to the invention proceeds in such a way that the support nozzles 7 and also the nozzles 4 in the quench zone 3 are initially arranged in a position (standby position) remote from the transport path 5 of the glass pane 1 to be hardened. Only when the front edge of the glass sheet 1 from the heating zone 2 and between the support nozzles 7 occurs, they are so far approximated that on both sides of the glass sheet 1, this stabilizing and leading gas bearing (air bearings) are formed.
In practice, multiple pairs of backup nozzles 7 may be provided as well as multiple pairs of quench nozzles 4. Pairs of backup nozzles 7 may also be provided between pairs of quench nozzles 4.
In summary, an embodiment of the invention can be described as follows.
In a device for hardening flat glass, the glass sheets 1 between a heating zone 2 and a quenching zone 3 are supported on both sides by air bearings- The nozzles 7, from which pressurized air exiting to form the air bearings, are inclined so that they from the heating zone 2 away from the quenching zone 3, thereby preventing cooled air from flowing from the quenching zone 3 in the direction of the heating zone 2.
权利要求:
Claims (6)
[1]


1. A method for hardening flat glass, wherein flat glass is heated in a heating zone to the hardening temperature and quenched in a downstream quenching zone, characterized in that between the heating zone and the quenching zone, the glass sheet on both sides by gas bearings, in particular air bearings, is supported.
[2]
2. The method according to claim 1, characterized in that the air bearings are formed between support nozzles and the glass sheet.
[3]
3. The method according to claim 2, characterized in that the support nozzles, from which the gas exits to form the gas bearing, are put into operation as soon as the front edge of the glass to be hardened arrives in the region of the support nozzles.
[4]
4. The method according to any one of claims 1 to 3, characterized in that the gas flows in the quenching zone in the direction of the support nozzles.
[5]
5. The method according to any one of claims 2 to 4, characterized in that the gas flows from the support nozzles and from the nozzles of the quenching zone in a region between the support nozzles and the nozzles of the quenching zone.
[6]
6. Arrangement for carrying out the method according to one of claims 1 to 5 with a heating zone (2), which is formed by at least two ceramic nozzles, which are acted upon with hot gas, and a quenching zone (3) of at least two nozzles ( 4) is formed, which are acted upon with cooled gas, characterized in that between the heating zone (2) and the quenching zone (3) at least a pair of opposing support nozzles (7) is provided. Arrangement according to claim 6, characterized in that the support nozzles (7) transversely (arrows 8) to the transport plane (5) of the glass pane (1) are adjustable. Arrangement according to claim 6 or 7, characterized in that the outlet openings (9) of the support nozzles (7) to the plane of the transport path (5) of the glass pane (1) are inclined at an acute angle. Arrangement according to Claim 8, characterized in that the outlet openings (9) of the support nozzles (7) are inclined from the heating zone (2) to the quench zone (3)
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法律状态:
2017-12-15| MM01| Lapse because of not paying annual fees|Effective date: 20170418 |
优先权:
申请号 | 申请日 | 专利标题
ATA542/2011A|AT510416B1|2011-04-18|2011-04-18|METHOD AND DEVICE FOR HARDENING GLASS|ATA542/2011A| AT510416B1|2011-04-18|2011-04-18|METHOD AND DEVICE FOR HARDENING GLASS|
CN201280019399.7A| CN103781733B|2011-04-18|2012-01-26|Method and apparatus for hard glass|
US14/112,558| US9221708B2|2011-04-18|2012-01-26|Method and device for tempering glass|
EP12706432.7A| EP2616396B1|2011-04-18|2012-01-26|Method and device for tempering glass|
JP2014505455A| JP6159315B2|2011-04-18|2012-01-26|Method for tempering glass|
PCT/AT2012/000012| WO2012142629A1|2011-04-18|2012-01-26|Method and device for tempering glass|
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