CN206408095U - A kind of super-thin electronic glass shaping equipment - Google Patents
A kind of super-thin electronic glass shaping equipment Download PDFInfo
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- CN206408095U CN206408095U CN201720099447.8U CN201720099447U CN206408095U CN 206408095 U CN206408095 U CN 206408095U CN 201720099447 U CN201720099447 U CN 201720099447U CN 206408095 U CN206408095 U CN 206408095U
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- 239000011521 glass Substances 0.000 title claims abstract description 102
- 238000007493 shaping process Methods 0.000 title claims abstract description 59
- 238000001514 detection method Methods 0.000 claims abstract description 28
- 238000007599 discharging Methods 0.000 claims abstract description 4
- IJGRMHOSHXDMSA-UHFFFAOYSA-N Atomic nitrogen Chemical compound N#N IJGRMHOSHXDMSA-UHFFFAOYSA-N 0.000 claims description 84
- XKRFYHLGVUSROY-UHFFFAOYSA-N Argon Chemical compound [Ar] XKRFYHLGVUSROY-UHFFFAOYSA-N 0.000 claims description 74
- XLYOFNOQVPJJNP-UHFFFAOYSA-N water Substances O XLYOFNOQVPJJNP-UHFFFAOYSA-N 0.000 claims description 47
- 229910052757 nitrogen Inorganic materials 0.000 claims description 39
- 229910052786 argon Inorganic materials 0.000 claims description 37
- 238000010438 heat treatment Methods 0.000 claims description 31
- 239000008367 deionised water Substances 0.000 claims description 28
- 229910021641 deionized water Inorganic materials 0.000 claims description 28
- 239000007788 liquid Substances 0.000 claims description 20
- 239000006060 molten glass Substances 0.000 claims description 19
- 239000010410 layer Substances 0.000 claims description 16
- 238000007496 glass forming Methods 0.000 claims description 13
- UGFAIRIUMAVXCW-UHFFFAOYSA-N Carbon monoxide Chemical compound [O+]#[C-] UGFAIRIUMAVXCW-UHFFFAOYSA-N 0.000 claims description 12
- 239000003546 flue gas Substances 0.000 claims description 12
- 239000002918 waste heat Substances 0.000 claims description 12
- 239000007789 gas Substances 0.000 claims description 11
- 229910001873 dinitrogen Inorganic materials 0.000 claims description 8
- 229910001868 water Inorganic materials 0.000 claims description 8
- 239000012535 impurity Substances 0.000 claims description 4
- 229910001220 stainless steel Inorganic materials 0.000 claims description 4
- 239000010935 stainless steel Substances 0.000 claims description 4
- 239000000498 cooling water Substances 0.000 claims description 3
- 239000011229 interlayer Substances 0.000 claims description 3
- 238000000465 moulding Methods 0.000 abstract description 32
- 238000000034 method Methods 0.000 abstract description 15
- 230000008569 process Effects 0.000 abstract description 8
- 229910052751 metal Inorganic materials 0.000 abstract description 3
- 239000002184 metal Substances 0.000 abstract description 3
- 238000010926 purge Methods 0.000 abstract description 3
- 231100000252 nontoxic Toxicity 0.000 abstract description 2
- 230000003000 nontoxic effect Effects 0.000 abstract description 2
- 230000000740 bleeding effect Effects 0.000 abstract 1
- ATJFFYVFTNAWJD-UHFFFAOYSA-N Tin Chemical compound [Sn] ATJFFYVFTNAWJD-UHFFFAOYSA-N 0.000 description 13
- 238000004519 manufacturing process Methods 0.000 description 12
- 239000000758 substrate Substances 0.000 description 12
- 239000004973 liquid crystal related substance Substances 0.000 description 7
- 238000006124 Pilkington process Methods 0.000 description 6
- 238000005485 electric heating Methods 0.000 description 4
- 238000002844 melting Methods 0.000 description 4
- 230000008018 melting Effects 0.000 description 4
- BASFCYQUMIYNBI-UHFFFAOYSA-N platinum Chemical compound [Pt] BASFCYQUMIYNBI-UHFFFAOYSA-N 0.000 description 4
- HEMHJVSKTPXQMS-UHFFFAOYSA-M Sodium hydroxide Chemical compound [OH-].[Na+] HEMHJVSKTPXQMS-UHFFFAOYSA-M 0.000 description 3
- 230000000694 effects Effects 0.000 description 3
- 238000005265 energy consumption Methods 0.000 description 3
- 230000009471 action Effects 0.000 description 2
- 238000000137 annealing Methods 0.000 description 2
- 230000009286 beneficial effect Effects 0.000 description 2
- 238000007664 blowing Methods 0.000 description 2
- 238000005034 decoration Methods 0.000 description 2
- 238000005516 engineering process Methods 0.000 description 2
- 230000007613 environmental effect Effects 0.000 description 2
- 239000005329 float glass Substances 0.000 description 2
- 238000007306 functionalization reaction Methods 0.000 description 2
- 238000000227 grinding Methods 0.000 description 2
- 230000017525 heat dissipation Effects 0.000 description 2
- 239000000463 material Substances 0.000 description 2
- 238000004377 microelectronic Methods 0.000 description 2
- 238000002156 mixing Methods 0.000 description 2
- 238000012986 modification Methods 0.000 description 2
- 230000004048 modification Effects 0.000 description 2
- 229910052697 platinum Inorganic materials 0.000 description 2
- 238000005498 polishing Methods 0.000 description 2
- 238000012545 processing Methods 0.000 description 2
- 229920006395 saturated elastomer Polymers 0.000 description 2
- 230000009466 transformation Effects 0.000 description 2
- XUIMIQQOPSSXEZ-UHFFFAOYSA-N Silicon Chemical compound [Si] XUIMIQQOPSSXEZ-UHFFFAOYSA-N 0.000 description 1
- 229910001413 alkali metal ion Inorganic materials 0.000 description 1
- PNEYBMLMFCGWSK-UHFFFAOYSA-N aluminium oxide Inorganic materials [O-2].[O-2].[O-2].[Al+3].[Al+3] PNEYBMLMFCGWSK-UHFFFAOYSA-N 0.000 description 1
- 230000004888 barrier function Effects 0.000 description 1
- 230000008901 benefit Effects 0.000 description 1
- 238000006243 chemical reaction Methods 0.000 description 1
- 238000005520 cutting process Methods 0.000 description 1
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- 230000005484 gravity Effects 0.000 description 1
- 239000011261 inert gas Substances 0.000 description 1
- 238000009413 insulation Methods 0.000 description 1
- 239000012774 insulation material Substances 0.000 description 1
- 230000015654 memory Effects 0.000 description 1
- 239000000203 mixture Substances 0.000 description 1
- 230000005693 optoelectronics Effects 0.000 description 1
- 238000001259 photo etching Methods 0.000 description 1
- 230000005622 photoelectricity Effects 0.000 description 1
- 238000012805 post-processing Methods 0.000 description 1
- 238000004321 preservation Methods 0.000 description 1
- 230000009467 reduction Effects 0.000 description 1
- 238000000926 separation method Methods 0.000 description 1
- 229910052710 silicon Inorganic materials 0.000 description 1
- 239000010703 silicon Substances 0.000 description 1
- HBMJWWWQQXIZIP-UHFFFAOYSA-N silicon carbide Chemical compound [Si+]#[C-] HBMJWWWQQXIZIP-UHFFFAOYSA-N 0.000 description 1
- 229910010271 silicon carbide Inorganic materials 0.000 description 1
- 238000000638 solvent extraction Methods 0.000 description 1
- 238000005507 spraying Methods 0.000 description 1
- 230000000087 stabilizing effect Effects 0.000 description 1
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Classifications
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- Y—GENERAL TAGGING OF NEW TECHNOLOGICAL DEVELOPMENTS; GENERAL TAGGING OF CROSS-SECTIONAL TECHNOLOGIES SPANNING OVER SEVERAL SECTIONS OF THE IPC; TECHNICAL SUBJECTS COVERED BY FORMER USPC CROSS-REFERENCE ART COLLECTIONS [XRACs] AND DIGESTS
- Y02—TECHNOLOGIES OR APPLICATIONS FOR MITIGATION OR ADAPTATION AGAINST CLIMATE CHANGE
- Y02P—CLIMATE CHANGE MITIGATION TECHNOLOGIES IN THE PRODUCTION OR PROCESSING OF GOODS
- Y02P40/00—Technologies relating to the processing of minerals
- Y02P40/50—Glass production, e.g. reusing waste heat during processing or shaping
- Y02P40/57—Improving the yield, e-g- reduction of reject rates
Landscapes
- Surface Treatment Of Glass (AREA)
Abstract
The utility model discloses a kind of super-thin electronic glass shaping equipment, including forming tank, shaping medium feed system, detection control apparatus, heater and shaping edge machine, the forming tank is divided into high-temperature molding section and low temperature moulding section with glass metal traffic direction along its length；It is glass metal to be formed above the forming tank, top in forming tank is provided with hook, fixed on hook and lock the bottom in two layers of shaping medium blender, forming tank provided with some purging devices and discharging valve, the both sides of forming tank are additionally provided with the air bleeding valve for pressure release.Following target can be reached with the former：1. the electronic glass thickness after one-shot forming is in below 0.5mm；2. make electronic glass be up to state standards in every regulation, meet following process use requirement；3. in forming process nontoxic pollution-free, while shaping medium cost is low.
Description
Technical Field
The utility model relates to an ultra-thin electronic glass technical field especially relates to an ultra-thin electronic glass former.
Background
The ultrathin electronic glass is electronic glass with the thickness of 0.1-1.1 mm. The electronic glass is a kind of high-tech product applicable to the fields of electronics, microelectronics and optoelectronics, and is mainly used for manufacturing integrated circuits and glass materials of components with the functions of photoelectricity, thermoelectricity, acoustooptical and magneto-optical.
The substrate glass is one of ultrathin electronic glass, and is one of special ultrathin electronic glass which is most widely applied and most rapidly developed in high and new technologies such as microelectronics, photoelectronics, new energy and the like at present; the method mainly comprises the steps of preparing liquid crystal substrate glass, preparing substrate glass for solar cells, preparing substrate glass for memories and preparing substrate glass for photoetching in the manufacturing process of integrated circuits.
At present, the global market share of liquid crystal substrate glass is about 60% of the American corning company, about 20% of the Japanese Asahi glass company, and about 20% of other companies such as Schottky, electric glass, and domestic rainbow. In addition, the production line of the G6 generation and below (the size of the G6 panel is 1500 × 1800mm) is mainly used in China at present, and the higher the generation, the larger the size, the wider the plate width and the larger the area of the substrate glass can be produced, the larger the product can be cut from one substrate glass, the higher the cutting rate is, and the lower the cost is. Therefore, the production line of G8.5 generation (panel size 2200 × 2500mm) has a significant advantage in producing 60 inches or more of liquid crystal substrate glass. However, the market of liquid crystal substrate glass and cover plates produced by the production line of G8.5 generation and above is monopolized by foreign companies, and currently, two mainstream forming methods are adopted: overflow method and float method.
The overflow method, the patent of the United states Corning company, produces glass with good quality, does not need secondary processing such as grinding and polishing, and the like, but has large production line investment, the main investment is that the lining of melting and forming equipment is completely wrapped by platinum, and the investment of the platinum lining is huge. And the higher the generation of liquid crystal substrate glass (G8.5 generation and above) produced by the overflow method, the more expensive the equipment investment, and the higher the technical requirements.
The float process has the characteristics of large tonnage, wide plate width and low production cost; only Asahi glass company has been successfully mass-produced. However, in the float process, a tin bath is used as a forming device, and metal tin is heated to be liquid and kept at a temperature required by forming in the forming process. Although the forming temperature of the float glass is only 650-1050 ℃, the forming temperature of the ultrathin electronic glass is higher due to the high alumina content and high viscosity in the composition, and generally reaches 700-1250 ℃. When the glass is formed by the float method, the lower surface of the glass is easy to be stained with tin due to the existence of metallic tin, secondary treatment such as grinding and polishing is needed, the post processing cost is high, the performance of the ultrathin electronic glass product produced by the float method can not meet the requirements of high-generation liquid crystal substrate glass, and higher energy consumption is needed for heating the metallic tin. Therefore, the technological barrier is encountered in the development of ultra-thin electronic glass in advanced generation by the float process.
Therefore, a molding device capable of being applied to ultra-thin electronic glass is needed in the art.
SUMMERY OF THE UTILITY MODEL
The utility model aims at the technical defects in the prior art, and provides an ultrathin electronic glass forming device which can obviously improve the product performance, comprising a forming groove, a forming medium supply system which provides gaseous forming medium in the forming groove, a detection control device which is used for detecting and controlling the parameters of the forming medium and the forming parameters, a heating device which is used for reaching the temperature of the forming medium and the forming temperature, and a forming edge-drawing machine which is arranged above the two sides of the forming groove and used for drawing glass liquid to form the glass liquid, wherein the forming groove is sequentially divided into a high-temperature forming section and a low-temperature forming section along the length direction and the running direction of the glass liquid; the upper portion in the shaping inslot is equipped with the couple, and it has two-layer shaping medium blender to fix and lock on the couple, and the bottom in the shaping inslot is equipped with a plurality of purgers that are used for regularly clearing up shaping medium blender and the valve that drains that is used for regularly discharging cooling water and impurity, and the both sides in shaping groove still are equipped with the discharge valve that is used for the pressure release.
The body of the forming groove is a shell with an inverted trapezoid longitudinal section, a heat-insulating layer is coated outside the shell, the length of the shell is 35-42m, the depth of the shell is 180-350mm, and the angle between the side surface and the bottom surface is 10-22 degrees.
The forming medium mixer is a stainless steel plate with a plurality of through holes uniformly distributed, the first forming medium mixer and the second forming medium mixer are sequentially arranged in the forming groove from bottom to top by the two layers of forming medium mixers, and the through holes of the first forming medium mixer and the second forming medium mixer are arranged in a staggered mode.
The thickness of the first forming medium mixer is 12-15mm, the aperture is 40-60 mu m, and the distance between the centers of two adjacent holes is 90-120 mu m.
The thickness of the second forming medium mixer is 7-8mm, the aperture of the small holes distributed on the second forming medium mixer is 20-30 mu m, and the distance between the centers of two adjacent small holes is 60-90 mu m.
The distance between the second forming medium mixer and the molten glass is 5-8mm, and the distance between the second forming medium mixer and the first forming medium mixer is 10-25 mm.
The forming medium supply system comprises a nitrogen station for providing nitrogen and argon, a water station for providing deionized water and forming medium outlets uniformly distributed at the bottom of the forming groove; the forming medium outlet is divided into a nitrogen outlet arranged in the high-temperature forming section and the low-temperature forming section, an argon outlet arranged in the high-temperature forming section and a steam outlet arranged in the low-temperature forming section; the nitrogen station is connected with the nitrogen outlet and the argon outlet through a nitrogen pipeline and an argon pipelineThe water station is connected with a water vapor outlet through a deionized water pipeline; the nitrogen pipeline, the argon pipeline and the deionized water pipeline are all provided with valves, and N used in the heating pipeline is also arranged2Ar and deionized water make the deionized water become the flue gas waste heat heating system of vapor.
And heat-insulating interlayers are also arranged outside the nitrogen pipeline, the argon pipeline and the deionized water pipeline between the flue gas waste heat heating system and the forming medium outlet.
The detection control device comprises a pressure detection control device, a temperature detection control device and a flow detection control device; wherein, pressure detection controlling means sets up between shaping medium mixer and glass liquid and between shaping medium mixer and the shaping tank bottom, and temperature detection controlling means sets up between two-layer shaping medium mixer, and flow detection controlling means sets up on nitrogen gas pipeline, argon gas pipeline, deionized water pipeline.
The heating device comprises a flue gas waste heat heating system and an electric heating system arranged between the shell of the forming groove and the heat insulation layer.
Compared with the prior art, the beneficial effects of the utility model are that:
the utility model discloses an ultra-thin electronic glass former compares with current molten tin bath former, because the shaping medium does not use tin, has consequently thoroughly solved glass surface tin sticky and has melted the high problem of tin unit energy consumption. Still because the utility model discloses a forming medium is nitrogen gas, argon gas and saturated vapor in the former, does not pollute the environment, low to the transformation degree of existing equipment, the forming medium source is extensive, with low costs, and can make full use of the used heat that the glass melting furnace produced heats the forming medium, can satisfy the domestic development requirement to the upsizing of ultra-thin electronic glass, and the glass size of producing can reach more than 2200 x 2500mm, can satisfy G8.5 generation and above electronic glass's requirement completely. Use the utility model discloses a former can reach following effect: the thinning is realized, and the thickness of the electronic glass formed in one step is less than 0.5 mm; realizing functionalization, so that the electronic glass reaches various specifications in the GB/T20314-2006 thin float glass standard for liquid crystal displays, and meets the use requirements of subsequent processing; and the environment-friendly effect is realized, and the ultra-thin electronic glass is green in forming process, non-toxic, free of pollution to the environment and low in forming medium cost.
Drawings
Fig. 1 is a schematic structural view of the ultra-thin electronic glass forming apparatus of the present invention;
FIG. 2 shows a longitudinal section through the profiled groove in FIG. 1;
FIG. 3 is a top view of the second forming medium mixer of FIG. 1;
figure 4 shows a side view of the profiled groove of figure 1.
Detailed Description
The utility model discloses a former for ultra-thin electronic glass includes shaping groove, shaping medium feed system, detection controlling means, heating device.
Wherein the forming tank is a device for forming the molten glass. The forming medium supply system is used for respectively conveying forming media, namely high-temperature nitrogen, argon and superheated saturated steam into the forming groove through pipelines, and then mixing the forming media for glass forming. The detection control device is used for detecting and adjusting parameters in each pipeline and the forming groove and ensuring the stability of the parameters. The heating device is arranged for ensuring the requirement of the molding temperature, the silicon carbide rod is mainly adopted to heat the molding groove shell, the shell conducts heat to the molding medium in the molding groove, and the temperature of the molding groove is ensured to meet the molding requirement.
The present invention will be described in more detail and further illustrated with reference to specific examples, which are not intended to limit the present invention in any way.
The utility model provides an ultra-thin electronic glass former, as shown in fig. 1, draw limit machine 24 including shaping groove 2, shaping medium feed system, detection control device, heating device and shaping. Wherein,
first, forming groove
The forming tank 2 includes a housing 3 and an insulating layer 4 covering the housing 3, as shown in fig. 2. The shell 3 is a long groove body, the longitudinal section of the long groove body is in an inverted trapezoid shape, namely, the opening of the trapezoid is gradually enlarged from bottom to top, the angle between the inclined edge of the trapezoid and the bottom edge is 10-22 degrees, the length of the shell 3 is 35-42m, and the depth is 180-350 mm. Above the housing 3 is the molten glass 1 to be formed and divided into a high temperature forming section and a low temperature forming section along the length and the direction of travel of the molten glass (as indicated by the arrows in fig. 4). The heat preservation layer 4 adopts multilayer insulation material to reduce the heat dissipation of casing 3, the energy saving.
The upper part in the housing 3 is provided with a molding medium mixer. The forming medium mixer is a stainless steel plate with a plurality of through holes uniformly distributed, the stainless steel material is 310S, and two layers, namely a first forming medium mixer 6 and a second forming medium mixer 5, are arranged from bottom to top. The thickness of the first forming medium mixer 6 is 12-15mm, the aperture is 40-60 μm, and the circle center distance between two adjacent holes is 90-120 μm. The thickness of the second forming medium mixer 5 is 7-8mm, the aperture of the small holes 20 distributed on the second forming medium mixer is 20-30 μm, and the distance between the centers of two adjacent small holes is 60-90 μm, as shown in FIG. 3. The distance between the second forming medium mixer 5 and the molten glass 1 to be formed is 5-8mm, and the distance between the second forming medium mixer 5 and the first forming medium mixer 6 is 10-25 mm. The second molding medium mixer 5 is staggered with the through holes of the first molding medium mixer 6 to enable further mixing of the molding medium.
Hooks 23 are also provided on both sides of the interior of the housing 3 at positions corresponding to the molding medium mixer for fixing and locking the molding medium mixer in the housing 3. The space between the bottom of the forming trough 2 and the first forming medium mixer 6 is a bottom trough. Inner side of bottom of shell 3 of forming groove 2A plurality of purgers 22 are also arranged, which can periodically purge the molding medium mixer to purge impurities on the surface of the molding medium mixer, wherein the purgers 22 adopt a pressure of 0.4-0.7MPa and a flow of 40-60Nm3And/h, blowing by using 150-280 ℃ nitrogen, wherein the pressure is increased rapidly during blowing, so that the exhaust valves 17 are required to be symmetrically arranged on two sides of the forming groove 2 for automatic pressure relief. The bottom of the low-temperature forming section of the forming groove 2 is also provided with a water drain valve 19 which is used for periodically discharging the liquefied cooling water and other impurities in the forming process.
Second, forming medium supply system
The forming medium supply system includes a nitrogen station 9 that supplies nitrogen gas and argon gas, a water station 10 that supplies deionized water, and a forming medium outlet 7.
The forming medium outlets 7 are uniformly distributed at the bottom of the forming groove 2 and are divided into a nitrogen outlet, an argon outlet and a water vapor outlet; wherein, nitrogen gas export evenly distributed is in the bottom of shaping groove high temperature shaping section and low temperature shaping section, and argon gas export only distributes in the bottom of shaping groove high temperature shaping section, and the vapor outlet then distributes in the bottom of shaping groove low temperature shaping section.
The nitrogen station 9 is used for preparing nitrogen and argon by an air separation method, and the nitrogen station 9 is connected with a nitrogen pipeline 12 and an argon pipeline 11 for respectively conveying the nitrogen and the argon to a nitrogen outlet and an argon outlet. The water station 10 stores deionized water and is connected with a deionized water pipeline 13 to convey the deionized water to a water vapor outlet. The nitrogen pipeline 12, the argon pipeline 11 and the deionized water pipeline 13 are all provided with valves 8 and a flue gas waste heat heating system 21 for heating N in the pipelines2Ar and deionized water, and heating the deionized water to steam; to reduce heat dissipation in the pipes, a heated forming medium (N) is fed2Ar and water vapor) is provided with a heat insulating interlayer 14.
The nitrogen and the argon are used as forming media of the high-temperature forming section, are firstly preliminarily mixed at the lower part of the high-temperature forming section of the forming groove, then move upwards to the first forming media mixer 6 and the second forming media mixer 5, and are acted on the bottom surface of the molten glass to be formed after being fully mixed, so that the molten glass is preliminarily formed. The nitrogen and the water vapor are used as forming media of the low-temperature forming section, are firstly primarily mixed at the lower part of the low-temperature forming section of the forming groove, then move upwards to the first forming media mixer 6 and the second forming media mixer 5, and are fully mixed to act on the bottom surface of the primarily formed glass, so that the primarily formed glass is finally formed.
The junction of the high-temperature forming section and the low-temperature forming section is not strictly isolated, so that the junction actually has both high-temperature forming medium and low-temperature forming medium, namely nitrogen, argon and water vapor, and the temperature and the pressure are also between the high-temperature forming section and the low-temperature forming section, so that the continuity of forming parameters is ensured, and the quality of the molten glass is stable in the forming process.
Third, detect the controlling device
The detection control device is divided into a pressure detection control device, a temperature detection control device and a flow detection control device, and is arranged on the nitrogen pipeline 12, the argon pipeline 11, the deionized water pipeline 13 and the forming groove 2.
The flow detection control device 25 is provided only on the nitrogen gas pipe 12, the argon gas pipe 11 and the deionized water pipe 13, and is used for detecting and controlling N2Ar and deionized water (or water vapor).
A pressure detection control device 15 in the forming groove 2 is arranged above the second forming medium mixer 5 and below the bottom surface of the molten glass 1 and is used for detecting the pressure of the forming medium and controlling the pressure of the forming medium to be kept between 10 and 20Pa, when the pressure is higher than 20Pa, exhaust valves 17 on two sides of the forming groove are automatically opened to carry out pressure relief until the pressure is reduced to 10 to 20Pa, and when the pressure is lower than 10Pa, a control system improves the supply pressure of the forming medium to improve the pressure of the forming medium to be between 10 and 20 Pa; the glass can be blown up by too high pressure, the surface of the formed glass is uneven, the glass can deform and warp downwards under the action of gravity by too low pressure, and the formed glass can not meet the use requirements of electronic glass by too high or too low pressure. The pressure detection control device 15 is also arranged between the first molding medium mixer 6 and the molding groove 2, namely in the bottom groove, and is used for adjusting the temperature, pressure and flow parameters of the molding medium, and the bottom groove has a larger space and can be used for stabilizing the pressure of the molding medium and ensuring the stability of other parameters of the molding medium.
The temperature detection control device 16 is provided between the first molding medium mixer 6 and the second molding medium mixer 5, and detects the temperature of the molding medium.
Fourth, heating device
The heating device comprises a flue gas waste heat heating system 21 and an electric heating system 18. Wherein, the flue gas waste heat heating system 21 is arranged on the nitrogen pipeline 12, the argon pipeline 11 and the deionized water pipeline 13 in the forming medium supply system. An electric heating system 18 is arranged between the shell 3 and the heat-insulating layer 4 of the forming groove 2 and is used for providing the temperature required by forming.
Because the temperature is controlled in the forming groove in a partitioning mode, different heating powers can be adopted according to temperature requirements of different positions, the relative power of the entering end of the forming groove is large, the installed power is 280kw, the temperature of the rear end of the forming groove is low, the relative power is low, meanwhile, the forming medium and the glass also have certain temperatures, the installed power is 120kw, and the installed power of the whole electric heating system is 400 kw. The full power load is realized when the production operation is started, the operation heating power is 350kw, the power required for heating is reduced due to the temperature of the forming medium and the glass residual heat during normal operation, and the heating power is 220kw at this time.
Five, shaping edge roller
The forming edge-drawing machine 24 is arranged above the forming groove 2, a plurality of forming grooves are symmetrically arranged along the length direction of the forming groove 2, and the molten glass 1 to be formed is formed under the traction action of the forming edge-drawing machine 24. Because the high temperature shaping section is responsible for preliminary shaping, the low temperature shaping section is responsible for accurate shaping, consequently, the parameter of the shaping edge roller 24 during operation of high temperature shaping section and low temperature shaping section both sides is different, and the shaping edge roller 24 of high temperature shaping section both sides is used for waiting the shaping glass liquid preliminary shaping to required thickness and the within range of size, and the shaping edge roller 24 of low temperature shaping section both sides is used for the glass liquid accurate shaping after the preliminary shaping to required thickness and size.
Based on the forming equipment, the forming method of the ultrathin electronic glass comprises the following steps:
(1) debugging of a forming medium of the high-temperature forming section: opening valves of the nitrogen pipeline 12 and the argon pipeline 11 and a flue gas waste heat heating system 21 to mix N2Heating Ar, spraying into a high-temperature molding section in the molding groove 2 through a nitrogen outlet and an argon outlet, and adding 85-95% N by volume percentage2And 5-15% of Ar as a high-temperature section molding medium are sequentially mixed by a first molding medium mixer 6 and a second molding medium mixer 5; the pressure of the mixed high-temperature section molding medium is 10-20Pa, and the temperature is 960-1280 ℃;
(2) primary molding: the forming groove 2 is connected with the melting area, the molten glass 1 is led to the upper part of the forming groove 2, the forming medium at the high-temperature section is sprayed upwards at the moment, micro-positive pressure is formed on the lower surface of the molten glass, and meanwhile, the forming edge-drawing machine 24 draws the molten glass to preliminarily form the molten glass into preliminary molten glass with the required size and thickness;
when glass liquid is just introduced, in order to prevent the glass liquid which just flows in from being blown up, the pressure of a forming medium at a high-temperature section can be slightly lower, then the positions of two sides of the glass are fixed through a forming edge-drawing machine, namely, the size is determined, and then the thickness of the formed glass is determined by adjusting the logarithm, the speed and the angle of the forming edge-drawing machine;
(3) debugging of a forming medium of the low-temperature forming section: the valves of the nitrogen pipeline 12 and the deionized water pipeline 13 and the flue gas waste heat heating system 21 are opened, and the deionized water is heated into steam and heated N2Respectively sprayed into the low-temperature forming section of the forming groove 2 through a water vapor outlet and a nitrogen outlet, and N with the volume percentage of 70-90 percent is used2And 10-30% of H2O (g) is taken as a low-temperature section forming medium and is mixed with the first forming medium in sequenceThe combiner 6 and the second forming medium mixer 5 are mixed; the pressure of the mixed low-temperature section forming medium is 8-16Pa, and the temperature is 690-960 ℃;
(4) and (3) accurate forming: when the working procedure is achieved, the viscosity of the glass liquid is very high, the size and the thickness of the glass liquid are mainly finely adjusted, and all indexes of a final glass product are ensured; then, the preliminarily formed glass liquid continues to move to a low-temperature forming section along the direction of the forming groove 2, a forming medium in the low-temperature section is sprayed upwards, micro-positive pressure is formed on the lower surface of the preliminarily formed glass liquid, meanwhile, a forming edge-drawing machine 24 draws the glass liquid, the preliminarily formed glass liquid with the required size and thickness is finely adjusted to the required size and thickness, accurate forming is completed, and the ultrathin electronic glass is obtained; and a glass outlet of the forming groove is connected with an annealing kiln, and the formed ultrathin electronic glass is annealed to eliminate the stress of the glass.
The utility model discloses a forming medium upwards spouts in the former, and the surface forms the pressure-fired below the glass liquid, makes the glass liquid float in the forming medium top that has certain pressure, draws the shaping of realization glass liquid on the forming medium through pulling of limit machine simultaneously through the shaping, has stopped that glass floats on molten tin liquid and makes the condition that the tin is stained with to the glass lower surface take place among the prior art, has reduced the secondary operation behind the shaping of ultra-thin electronic glass, improves the yield, reduction in production cost. The utility model discloses use nitrogen gas and argon gas as the shaping medium of high temperature shaping section because argon gas is inert gas, does not take place chemical reaction with other medium, and the nature is stable, and the density of argon gas is 1.784kg/m3The density of the glass is higher than that of nitrogen and air, and the buoyancy generated by the high density of the gas with the same volume is large, so that the glass is favorably formed; the equipment for preparing nitrogen in the existing tin bath forming technology can be directly used in the production process, and only a fractionating tower for preparing argon is needed to be added. The utility model uses the steam as the forming medium of the low-temperature forming section, because the low-temperature forming section belongs to the accurate forming stage, the forming temperature is not required to be so high, the steam replaces the argon gas to meet the requirement of the forming temperature, the production cost and the energy consumption can be reduced, and the connection with the subsequent annealing process is facilitated;in addition, the source of the water vapor is purified deionized water, and the heat source is from the waste heat of the flue gas, so that the comprehensive utilization of energy is realized; furthermore, the water vapor can react chemically with the glass surface (H)2O+Na+→NaOH+H+) And dissolving out alkali metal ions on the surface of the glass, so that an alkali-poor layer is formed on the surface of the glass, and a silicon-rich layer is formed on the surface of the glass, thereby being beneficial to improving the chemical property and the mechanical property of the electronic glass (such as repairing microcracks on the surface of the glass). It is thus clear that adopt the utility model discloses a former not only can realize ultra-thin electronic glass's shaping, reduces tin to glass's pollution, can also reduce the crazing line on glass surface, plays the effect of restoreing glass surface.
The utility model provides a what the forming medium used in ultra-thin electronic glass former is nitrogen gas, argon and vapor, to the environment pollution-free, low to the transformation degree of existing equipment, the forming medium source is extensive, with low costs, and can the make full use of glass melting furnace produced used heat the forming medium, can satisfy internal maximization to electronic glass, the slimming, the functionalization, the feature of environmental protection, green in ultra-thin electronic glass manufacture process, the requirement of product environmental protection, be of value to popularization and application.
The foregoing is only a preferred embodiment of the present invention, and it should be noted that, for those skilled in the art, many modifications and decorations can be made without departing from the principle of the present invention, and these modifications and decorations should be regarded as the contents of the present invention.
Claims (10)
1. The ultrathin electronic glass forming equipment is characterized by comprising a forming groove, a forming medium supply system for supplying a gaseous forming medium to the forming groove, a detection control device for detecting and controlling parameters of the forming medium and forming parameters, a heating device for reaching the temperature of the forming medium and the forming temperature, and a forming edge roller which is arranged above two sides of the forming groove and used for drawing molten glass to form the molten glass, wherein the forming groove is sequentially divided into a high-temperature forming section and a low-temperature forming section along the length direction and the running direction of the molten glass; the upper portion in the shaping inslot is equipped with the couple, and it has two-layer shaping medium blender to fix and lock on the couple, and the bottom in the shaping inslot is equipped with a plurality of purgers that are used for regularly clearing up shaping medium blender and the valve that drains that is used for regularly discharging cooling water and impurity, and the both sides in shaping groove still are equipped with the discharge valve that is used for the pressure release.
2. The ultra-thin electronic glass forming apparatus as claimed in claim 1, wherein the forming groove has a body with an inverted trapezoidal longitudinal section, the body is covered with a heat insulating layer, the length of the body is 35-42m, the depth is 180 mm and 350mm, and the angle between the side surface and the bottom surface is 10-22 °.
3. The ultra-thin electronic glass forming apparatus of claim 2, wherein the forming medium mixer is a stainless steel plate with a plurality of through holes uniformly distributed, the first forming medium mixer and the second forming medium mixer are sequentially arranged in the forming groove from bottom to top in the two layers of forming medium mixers, and the through holes of the first forming medium mixer and the second forming medium mixer are arranged in a staggered manner.
4. The ultra-thin electronic glass forming apparatus of claim 3, wherein the first forming medium mixer has a thickness of 12-15mm, a hole diameter of 40-60 μm, and a distance between centers of two adjacent holes of 90-120 μm.
5. The ultra-thin electronic glass forming apparatus of claim 4, wherein the thickness of the second forming medium mixer is 7-8mm, the aperture of the small holes distributed on the mixer is 20-30 μm, and the distance between the centers of two adjacent small holes is 60-90 μm.
6. The ultra-thin electronic glass forming apparatus of claim 5, wherein the distance between the second forming medium mixer and the molten glass is 5-8mm, and the distance between the second forming medium mixer and the first forming medium mixer is 10-25 mm.
7. According to the rightThe ultra-thin electronic glass forming apparatus of claim 6, wherein the forming medium supply system comprises a nitrogen station for providing nitrogen and argon, a water station for providing deionized water, and forming medium outlets uniformly distributed at the bottom of the forming tank; the forming medium outlet is divided into a nitrogen outlet arranged in the high-temperature forming section and the low-temperature forming section, an argon outlet arranged in the high-temperature forming section and a steam outlet arranged in the low-temperature forming section; the nitrogen station is connected with the nitrogen outlet and the argon outlet through a nitrogen pipeline and an argon pipeline, and the water station is connected with the water vapor outlet through a deionized water pipeline; the nitrogen pipeline, the argon pipeline and the deionized water pipeline are all provided with valves, and N used in the heating pipeline is also arranged2Ar and deionized water make the deionized water become the flue gas waste heat heating system of vapor.
8. The ultra-thin electronic glass forming apparatus according to claim 7, wherein heat insulating interlayers are further disposed outside the nitrogen pipeline, the argon pipeline and the deionized water pipeline between the flue gas waste heat heating system and the forming medium outlet.
9. The ultra-thin electronic glass forming apparatus as claimed in any one of claims 1 to 8, wherein the detection control means comprises a pressure detection control means, a temperature detection control means, and a flow rate detection control means; wherein, pressure detection controlling means sets up between shaping medium mixer and glass liquid and between shaping medium mixer and the shaping tank bottom, and temperature detection controlling means sets up between two-layer shaping medium mixer, and flow detection controlling means sets up on nitrogen gas pipeline, argon gas pipeline, deionized water pipeline.
10. The ultra-thin electronic glass forming apparatus of claim 9, wherein the heating device comprises a flue gas waste heat heating system and an electrical heating system disposed between the housing and the insulating layer of the forming trough.
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Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN107056021A (en) * | 2017-01-23 | 2017-08-18 | 秦皇岛玻璃工业研究设计院 | A kind of super-thin electronic glass shaping equipment and forming method |
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Cited By (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN107056021A (en) * | 2017-01-23 | 2017-08-18 | 秦皇岛玻璃工业研究设计院 | A kind of super-thin electronic glass shaping equipment and forming method |
| CN107056021B (en) * | 2017-01-23 | 2023-03-28 | 秦皇岛玻璃工业研究设计院有限公司 | Ultrathin electronic glass forming equipment and forming method |
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Address after: Hebei Street West Harbor area, 066004 Hebei city of Qinhuangdao province No. 91 Patentee after: Qinhuangdao glass industry research and Design Institute Co., Ltd. Address before: Hebei Street West Harbor area, 066004 Hebei city of Qinhuangdao province No. 91 Patentee before: Qinhuangdao Glass Industry Research and Design Inst. |
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