CN105050970A - Device for manufacturing glass sheet and method for manufacturing glass sheet - Google Patents
Device for manufacturing glass sheet and method for manufacturing glass sheet Download PDFInfo
- Publication number
- CN105050970A CN105050970A CN201480016389.7A CN201480016389A CN105050970A CN 105050970 A CN105050970 A CN 105050970A CN 201480016389 A CN201480016389 A CN 201480016389A CN 105050970 A CN105050970 A CN 105050970A
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- China
- Prior art keywords
- glass ribbon
- glass
- rotating member
- driving roll
- manufacturing installation
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- 239000011521 glass Substances 0.000 title claims abstract description 194
- 238000004519 manufacturing process Methods 0.000 title claims abstract description 41
- 238000000034 method Methods 0.000 title claims description 18
- 238000000137 annealing Methods 0.000 claims abstract description 30
- 229910052751 metal Inorganic materials 0.000 claims abstract description 25
- 239000002184 metal Substances 0.000 claims abstract description 25
- ATJFFYVFTNAWJD-UHFFFAOYSA-N Tin Chemical compound [Sn] ATJFFYVFTNAWJD-UHFFFAOYSA-N 0.000 claims description 58
- 239000005357 flat glass Substances 0.000 claims description 49
- 238000009434 installation Methods 0.000 claims description 30
- 238000003825 pressing Methods 0.000 claims description 18
- 229910001315 Tool steel Inorganic materials 0.000 claims description 16
- 230000004941 influx Effects 0.000 claims description 4
- 238000005520 cutting process Methods 0.000 claims description 3
- 230000007246 mechanism Effects 0.000 abstract description 21
- 238000000465 moulding Methods 0.000 abstract description 6
- 239000006060 molten glass Substances 0.000 abstract 1
- 229910052581 Si3N4 Inorganic materials 0.000 description 15
- HQVNEWCFYHHQES-UHFFFAOYSA-N silicon nitride Chemical compound N12[Si]34N5[Si]62N3[Si]51N64 HQVNEWCFYHHQES-UHFFFAOYSA-N 0.000 description 14
- 238000005245 sintering Methods 0.000 description 13
- 239000010959 steel Substances 0.000 description 13
- 229910000831 Steel Inorganic materials 0.000 description 12
- CPLXHLVBOLITMK-UHFFFAOYSA-N magnesium oxide Inorganic materials [Mg]=O CPLXHLVBOLITMK-UHFFFAOYSA-N 0.000 description 10
- 239000000395 magnesium oxide Substances 0.000 description 10
- AXZKOIWUVFPNLO-UHFFFAOYSA-N magnesium;oxygen(2-) Chemical compound [O-2].[Mg+2] AXZKOIWUVFPNLO-UHFFFAOYSA-N 0.000 description 10
- 239000000463 material Substances 0.000 description 10
- 239000003513 alkali Substances 0.000 description 9
- 239000003795 chemical substances by application Substances 0.000 description 9
- 239000007789 gas Substances 0.000 description 9
- 238000005057 refrigeration Methods 0.000 description 9
- 238000005452 bending Methods 0.000 description 7
- 239000003507 refrigerant Substances 0.000 description 7
- 229910052782 aluminium Inorganic materials 0.000 description 6
- 150000001875 compounds Chemical class 0.000 description 6
- 238000010438 heat treatment Methods 0.000 description 6
- 239000011777 magnesium Substances 0.000 description 5
- 239000012528 membrane Substances 0.000 description 5
- 230000036961 partial effect Effects 0.000 description 5
- 230000001681 protective effect Effects 0.000 description 5
- 230000000979 retarding effect Effects 0.000 description 5
- 239000010936 titanium Substances 0.000 description 5
- 238000003466 welding Methods 0.000 description 5
- 238000005516 engineering process Methods 0.000 description 4
- 239000000203 mixture Substances 0.000 description 4
- 239000000843 powder Substances 0.000 description 4
- 230000008569 process Effects 0.000 description 4
- 229910000975 Carbon steel Inorganic materials 0.000 description 3
- 238000006124 Pilkington process Methods 0.000 description 3
- 239000000919 ceramic Substances 0.000 description 3
- 238000006243 chemical reaction Methods 0.000 description 3
- 239000011651 chromium Substances 0.000 description 3
- 238000000576 coating method Methods 0.000 description 3
- 239000000470 constituent Substances 0.000 description 3
- 239000007769 metal material Substances 0.000 description 3
- HBMJWWWQQXIZIP-UHFFFAOYSA-N silicon carbide Chemical compound [Si+]#[C-] HBMJWWWQQXIZIP-UHFFFAOYSA-N 0.000 description 3
- 239000005361 soda-lime glass Substances 0.000 description 3
- 238000004544 sputter deposition Methods 0.000 description 3
- 239000010935 stainless steel Substances 0.000 description 3
- 229910001220 stainless steel Inorganic materials 0.000 description 3
- XLYOFNOQVPJJNP-UHFFFAOYSA-N water Substances O XLYOFNOQVPJJNP-UHFFFAOYSA-N 0.000 description 3
- IJGRMHOSHXDMSA-UHFFFAOYSA-N Atomic nitrogen Chemical compound N#N IJGRMHOSHXDMSA-UHFFFAOYSA-N 0.000 description 2
- OKTJSMMVPCPJKN-UHFFFAOYSA-N Carbon Chemical compound [C] OKTJSMMVPCPJKN-UHFFFAOYSA-N 0.000 description 2
- VYZAMTAEIAYCRO-UHFFFAOYSA-N Chromium Chemical compound [Cr] VYZAMTAEIAYCRO-UHFFFAOYSA-N 0.000 description 2
- 101000803685 Homo sapiens Vacuolar protein sorting-associated protein 4A Proteins 0.000 description 2
- 208000037656 Respiratory Sounds Diseases 0.000 description 2
- 102100035085 Vacuolar protein sorting-associated protein 4A Human genes 0.000 description 2
- CXOWYMLTGOFURZ-UHFFFAOYSA-N azanylidynechromium Chemical compound [Cr]#N CXOWYMLTGOFURZ-UHFFFAOYSA-N 0.000 description 2
- 230000015572 biosynthetic process Effects 0.000 description 2
- 230000008602 contraction Effects 0.000 description 2
- 238000001816 cooling Methods 0.000 description 2
- 238000000151 deposition Methods 0.000 description 2
- 230000000694 effects Effects 0.000 description 2
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- 229910010271 silicon carbide Inorganic materials 0.000 description 2
- 229910052719 titanium Inorganic materials 0.000 description 2
- 238000011144 upstream manufacturing Methods 0.000 description 2
- 229910052727 yttrium Inorganic materials 0.000 description 2
- 229910000851 Alloy steel Inorganic materials 0.000 description 1
- 101100465829 Dictyostelium discoideum psmD14 gene Proteins 0.000 description 1
- 101000803689 Homo sapiens Vacuolar protein sorting-associated protein 4B Proteins 0.000 description 1
- 101000596394 Homo sapiens Vesicle-fusing ATPase Proteins 0.000 description 1
- UFHFLCQGNIYNRP-UHFFFAOYSA-N Hydrogen Chemical compound [H][H] UFHFLCQGNIYNRP-UHFFFAOYSA-N 0.000 description 1
- FYYHWMGAXLPEAU-UHFFFAOYSA-N Magnesium Chemical compound [Mg] FYYHWMGAXLPEAU-UHFFFAOYSA-N 0.000 description 1
- 101100230207 Oryza sativa subsp. japonica GSK1 gene Proteins 0.000 description 1
- 101150077645 SKS1 gene Proteins 0.000 description 1
- -1 SKS11 Proteins 0.000 description 1
- 101150019161 SKS2 gene Proteins 0.000 description 1
- 101100203325 Saccharomyces cerevisiae (strain ATCC 204508 / S288c) SKT5 gene Proteins 0.000 description 1
- 101100361291 Schizosaccharomyces pombe (strain 972 / ATCC 24843) rpn11 gene Proteins 0.000 description 1
- XUIMIQQOPSSXEZ-UHFFFAOYSA-N Silicon Chemical compound [Si] XUIMIQQOPSSXEZ-UHFFFAOYSA-N 0.000 description 1
- GWEVSGVZZGPLCZ-UHFFFAOYSA-N Titan oxide Chemical compound O=[Ti]=O GWEVSGVZZGPLCZ-UHFFFAOYSA-N 0.000 description 1
- RTAQQCXQSZGOHL-UHFFFAOYSA-N Titanium Chemical compound [Ti] RTAQQCXQSZGOHL-UHFFFAOYSA-N 0.000 description 1
- MCMNRKCIXSYSNV-UHFFFAOYSA-N Zirconium dioxide Chemical compound O=[Zr]=O MCMNRKCIXSYSNV-UHFFFAOYSA-N 0.000 description 1
- 239000000853 adhesive Substances 0.000 description 1
- 230000001070 adhesive effect Effects 0.000 description 1
- 229910000272 alkali metal oxide Inorganic materials 0.000 description 1
- 229910045601 alloy Inorganic materials 0.000 description 1
- 239000000956 alloy Substances 0.000 description 1
- 239000004411 aluminium Substances 0.000 description 1
- XAGFODPZIPBFFR-UHFFFAOYSA-N aluminium Chemical compound [Al] XAGFODPZIPBFFR-UHFFFAOYSA-N 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
- 239000012298 atmosphere Substances 0.000 description 1
- 229910052799 carbon Inorganic materials 0.000 description 1
- 239000010962 carbon steel Substances 0.000 description 1
- 230000008859 change Effects 0.000 description 1
- 229910052804 chromium Inorganic materials 0.000 description 1
- 238000009770 conventional sintering Methods 0.000 description 1
- 238000005260 corrosion Methods 0.000 description 1
- 230000007797 corrosion Effects 0.000 description 1
- 238000009792 diffusion process Methods 0.000 description 1
- 238000009826 distribution Methods 0.000 description 1
- 230000009977 dual effect Effects 0.000 description 1
- 230000003628 erosive effect Effects 0.000 description 1
- 210000003414 extremity Anatomy 0.000 description 1
- ZZUFCTLCJUWOSV-UHFFFAOYSA-N furosemide Chemical compound C1=C(Cl)C(S(=O)(=O)N)=CC(C(O)=O)=C1NCC1=CC=CO1 ZZUFCTLCJUWOSV-UHFFFAOYSA-N 0.000 description 1
- 229910052739 hydrogen Inorganic materials 0.000 description 1
- 239000001257 hydrogen Substances 0.000 description 1
- 230000006872 improvement Effects 0.000 description 1
- 239000012535 impurity Substances 0.000 description 1
- 238000003780 insertion Methods 0.000 description 1
- 230000037431 insertion Effects 0.000 description 1
- 239000007788 liquid Substances 0.000 description 1
- 238000002844 melting Methods 0.000 description 1
- 230000008018 melting Effects 0.000 description 1
- 229910044991 metal oxide Inorganic materials 0.000 description 1
- 150000004706 metal oxides Chemical class 0.000 description 1
- 239000011812 mixed powder Substances 0.000 description 1
- 229910052757 nitrogen Inorganic materials 0.000 description 1
- 239000012299 nitrogen atmosphere Substances 0.000 description 1
- 230000003647 oxidation Effects 0.000 description 1
- 238000007254 oxidation reaction Methods 0.000 description 1
- TWNQGVIAIRXVLR-UHFFFAOYSA-N oxo(oxoalumanyloxy)alumane Chemical compound O=[Al]O[Al]=O TWNQGVIAIRXVLR-UHFFFAOYSA-N 0.000 description 1
- SIWVEOZUMHYXCS-UHFFFAOYSA-N oxo(oxoyttriooxy)yttrium Chemical compound O=[Y]O[Y]=O SIWVEOZUMHYXCS-UHFFFAOYSA-N 0.000 description 1
- 238000007747 plating Methods 0.000 description 1
- 230000002829 reductive effect Effects 0.000 description 1
- VSZWPYCFIRKVQL-UHFFFAOYSA-N selanylidenegallium;selenium Chemical compound [Se].[Se]=[Ga].[Se]=[Ga] VSZWPYCFIRKVQL-UHFFFAOYSA-N 0.000 description 1
- 238000007493 shaping process Methods 0.000 description 1
- 238000003860 storage Methods 0.000 description 1
- 239000000758 substrate Substances 0.000 description 1
- 229910052721 tungsten Inorganic materials 0.000 description 1
- 210000001364 upper extremity Anatomy 0.000 description 1
- 229910052720 vanadium Inorganic materials 0.000 description 1
- VWQVUPCCIRVNHF-UHFFFAOYSA-N yttrium atom Chemical compound [Y] VWQVUPCCIRVNHF-UHFFFAOYSA-N 0.000 description 1
- 229910052726 zirconium Inorganic materials 0.000 description 1
Classifications
-
- C—CHEMISTRY; METALLURGY
- C03—GLASS; MINERAL OR SLAG WOOL
- C03B—MANUFACTURE, SHAPING, OR SUPPLEMENTARY PROCESSES
- C03B18/00—Shaping glass in contact with the surface of a liquid
- C03B18/02—Forming sheets
- C03B18/04—Changing or regulating the dimensions of the molten glass ribbon
- C03B18/06—Changing or regulating the dimensions of the molten glass ribbon using mechanical means, e.g. restrictor bars, edge rollers
-
- C—CHEMISTRY; METALLURGY
- C03—GLASS; MINERAL OR SLAG WOOL
- C03B—MANUFACTURE, SHAPING, OR SUPPLEMENTARY PROCESSES
- C03B35/00—Transporting of glass products during their manufacture, e.g. hot glass lenses, prisms
- C03B35/14—Transporting hot glass sheets or ribbons, e.g. by heat-resistant conveyor belts or bands
- C03B35/16—Transporting hot glass sheets or ribbons, e.g. by heat-resistant conveyor belts or bands by roller conveyors
- C03B35/18—Construction of the conveyor rollers ; Materials, coatings or coverings thereof
-
- C—CHEMISTRY; METALLURGY
- C03—GLASS; MINERAL OR SLAG WOOL
- C03B—MANUFACTURE, SHAPING, OR SUPPLEMENTARY PROCESSES
- C03B35/00—Transporting of glass products during their manufacture, e.g. hot glass lenses, prisms
- C03B35/14—Transporting hot glass sheets or ribbons, e.g. by heat-resistant conveyor belts or bands
- C03B35/16—Transporting hot glass sheets or ribbons, e.g. by heat-resistant conveyor belts or bands by roller conveyors
- C03B35/18—Construction of the conveyor rollers ; Materials, coatings or coverings thereof
- C03B35/181—Materials, coatings, loose coverings or sleeves thereof
Landscapes
- Chemical & Material Sciences (AREA)
- Engineering & Computer Science (AREA)
- Materials Engineering (AREA)
- Organic Chemistry (AREA)
- Mechanical Engineering (AREA)
- Re-Forming, After-Treatment, Cutting And Transporting Of Glass Products (AREA)
- Glass Compositions (AREA)
Abstract
A device for manufacturing a glass sheet, for supplying molten glass onto a molten metal (S) in a float bath (20) from an inflow port of the float bath (20), spreading a glass ribbon (G) in a width direction through use of a support roll (40) inserted from both sides of the float bath (20) in a molding region of the float bath (20), and molding the glass ribbon (G) to a predetermined thickness, wherein a glass ribbon delivery mechanism (70) is provided having drive rolls (71A-71C) for delivering the glass ribbon (G) in a downstream direction to an annealing region (L3) between a molding region (L2) and a float bath exit (29). The glass ribbon delivery mechanism (70) causes the drive rolls (71A-71C) to contact edge parts of the glass ribbon (G) on both sides thereof in the width direction and drives the drive rolls (71A-71C) so that the edge parts on both sides are delivered in the downstream direction.
Description
Technical field
The present invention relates to the manufacturing installation of sheet glass and the manufacture method of sheet glass.
Background technology
As the manufacturing process of sheet glass, widely use float glass process.Float glass process is directed into by melten glass on the molten metal (such as molten tin) that is accommodated in bath, melten glass flowed along prescribed direction, makes the method for the glass ribbon of band plate-like.Glass ribbon is raised from molten metal by runner after being cooled slowly in the process flowed in the horizontal direction, in annealing furnace annealing, forms plate glass.After plate glass is taken out of from annealing furnace, utilize cutting machine to cut into the size shape of regulation, make product glass plates.
, the glass of the state thinner than equilibrium thickness is in the tendency of shrinking in the width direction.If shrink excessive, then the Thickness Ratio target thickness of product glass plates can be caused thick.
So, in order to suppress the contraction of the width of glass ribbon, adopt the support roll (such as with reference to patent documentation 1) of supporting glass band all the time.Arrange multipair support roll in the width both sides of glass ribbon, support roll applies tension force to glass ribbon in the direction of the width.
Support roll has the rotating member with the surface contact of glass ribbon in leading section.Rotating member in such as discoid, and has the jog of gear-like in periphery.The protuberance of jog is absorbed in glass ribbon, suppresses the contraction of glass ribbon thus.
In the manufacturing installation of sheet glass, in float tin groove, be reserving with melten glass, the glass ribbon that molten metal flows is configured as specific thickness.
Prior art document
Patent documentation
Patent documentation 1: Japanese Patent Laid-Open 2011-225386 publication
Summary of the invention
Technical problem to be solved by this invention
; in recent years; require the thickness of sheet glass obtained thinner, particularly when glass for display substrate plate, require the sheet glass made preferred below 0.7mm, more preferably below 0.5mm, further preferred below 0.3mm, particularly preferably below 0.2mm, be more preferably below 0.1mm.
Glass ribbon is carried to downstream than the outlet of float tin groove near the runner at rear and the rotation of transport roller by being configured in.Therefore, in float tin groove, utilize runner and transport roller to apply the pulling force of downstream to carry to glass ribbon.
On the other hand, in the manufacturing installation of above-mentioned sheet glass, when producing relative velocity difference between the translational speed and the transporting velocity of runner moving glass band of the glass ribbon pulled out from float tin groove, easily there is the problem of the flaw that generation contacts with runner below glass ribbon.
When the speed of rotation of runner declines relative to the translational speed of the glass ribbon pulled out from float tin groove, likely there is waveform distortions in glass ribbon near the outlet of float tin groove.
Near the outlet of float tin groove, when glass ribbon is promoted to the crackle that width occurs in the process of the height location of runner, can occur glass ribbon be cut off and cannot continuously by glass ribbon pull out problem.
By sheet glass comparatively unfertile land be shaped time also easily there are these phenomenons.
So, the object of this invention is to provide the manufacturing installation of the sheet glass solved the problems of the technologies described above and the manufacture method of sheet glass.
The technical scheme that technical solution problem adopts
In order to solve the problems of the technologies described above, the present invention has following formation.
According to a form of the present invention, a kind of manufacturing installation of sheet glass is provided, it is for supply melten glass from the influx of float tin groove to the molten metal in float tin groove, at the shaped region of above-mentioned float tin groove, support roll is utilized to be expanded in the width direction by glass ribbon and be configured as the manufacturing installation of the sheet glass of specific thickness, it is characterized in that, annealing region between above-mentioned shaped region and float tin groove outlet arranges the glass ribbon discharge unit had for the driving roll by above-mentioned glass ribbon fed downstream direction, above-mentioned glass ribbon discharge unit makes the both sides portion contacts of the width of above-mentioned driving roll and above-mentioned glass ribbon, and make above-mentioned driving roll the mode in fed downstream direction, edge, above-mentioned both sides to be driven.
Invention effect
According to the present invention, the sheet glass of high-quality stably can be obtained.
Accompanying drawing explanation
Fig. 1 is the sectional elevation of an example of the schematic arrangement of the manufacturing installation of sheet glass from top view embodiment 1.
Fig. 2 is the longitudinal section of an example of the schematic arrangement of the manufacturing installation of the sheet glass observing embodiment 1 from side.
Fig. 3 is the partial, longitudinal cross-sectional of the mounting structure representing support roll.
Fig. 4 is the partial, longitudinal cross-sectional of the mounting structure representing driving roll.
Fig. 5 is the figure of the pottery rotating member from end on observation driving roll.
Fig. 6 is the longitudinal section of the cross-sectional shape representing pottery rotating member processed.
Fig. 7 is the figure amplifying the mounting structure representing rotating member.
Fig. 8 is the figure of the variation representing glass ribbon delivering mechanism.
Fig. 9 is the figure of the tool steel rotating member from end on observation driving roll.
Figure 10 is the longitudinal section of the cross-sectional shape of the tool steel rotating member represented along X-X line in Fig. 9.
Figure 11 is the figure of the protuberance that rotating member is described.
Figure 12 is the figure of the shape of tapered part for illustration of protuberance.
Figure 13 is the sectional elevation of an example of the schematic arrangement of the manufacturing installation of sheet glass from top view embodiment 2.
Figure 14 is the longitudinal section of an example of the schematic arrangement of the manufacturing installation of the sheet glass observing embodiment 2 from side.
Embodiment
Below, with reference to accompanying drawing, one embodiment of the present invention is described.In following accompanying drawing, identical or corresponding symbol are marked with to identical or corresponding structure, and the description thereof will be omitted.
(embodiment 1)
Fig. 1 is the sectional elevation of an example of the schematic arrangement of manufacturing installation 10 from the sheet glass of top view embodiment 1.Fig. 2 is the longitudinal section of an example of the schematic arrangement of the manufacturing installation 10 of the sheet glass observing embodiment 1 from side.
As shown in Fig. 1 ~ 2, the manufacturing installation 10 of sheet glass is the device being manufactured sheet glass by float glass process, and it has following structure: melten glass is being imported molten tin bath and after being configured as glass ribbon G, is carrying out the annealing temperature of glass ribbon G slowly reduced.
The melting kiln generating melten glass is provided with at the upstream side of the manufacturing installation 10 of sheet glass.
The manufacturing installation 10 of sheet glass has float tin groove 20.The bath 22 of float tin groove 20 by storage molten metal (such as molten tin) S, the periphery upper limb along bath 22 and the sidewall 24 that arranges and to be connected with sidewall 24 and the top 26 etc. covering the top of bath 22 is formed.The gas feeding path 30 supplying reducing gas in the space 28 formed between bath 22 and courtyard 26 is provided with on top 26.In addition, be inserted with the well heater 32 as heating source in gas feeding path 30, the heating part 32a of well heater 32 is configured in the top of molten metal S, glass ribbon G.
Use the manufacturing process of above-mentioned manufacturing installation 10 to be following methods: to be imported to molten metal S from the influx of float tin groove 20 by melten glass, this melten glass is flowed along prescribed direction, thus make the glass ribbon G of band plate-like.After cooled in the process that glass ribbon G flows in downstream (X-direction in Fig. 1, Fig. 2), runner is utilized to promote from molten metal S, in annealing furnace annealing, after being taken out of from annealing furnace, utilize cutting machine to be cut into the size shape of regulation, form product glass plates.
In order to prevent the oxidation of molten metal S, the space 28 in float tin groove 20 is filled with the reducing gas supplied from gas feeding path 30.Reducing gas comprises the hydrogen of such as 1 ~ 15 volume % and the nitrogen of 85 ~ 99 volume %.In order to prevent air to be mixed into from the gap etc. of sidewall 24, the space 28 in float tin groove 20 is set as the air pressure higher than normal atmosphere.
In order to regulate the temperature distribution in float tin groove 20, such as on the flow direction (X-direction) and width (Y-direction) of glass ribbon G every arranging multiple well heater 32 with interval, with grid-like configuration.The output rating of well heater 32 is controlled, and make flow direction (X-direction) upstream side the closer to glass ribbon G, the temperature of glass ribbon G is higher.In addition, the output rating of well heater 32 is controlled so as to make the thickness of slab of glass ribbon G evenly upper at width (Y-direction).
The inside of float tin groove 20 has: low adhesive region, i.e. the supply area L1 of supply melten glass as mentioned above; In its downstream side, the glass ribbon G flowed on molten metal S both sides (width) expansion is to the left and right configured as the shaped region L2 of specific thickness; And to the annealing region L3 that glass ribbon G anneals between shaped region L2 and the outlet 29 of float tin groove 20.Multiple well heater 32 is configured with on the top 26 of each region L1 ~ L3.In addition, what produced by each well heater 32 in each regional control adds heat, by the temperature of adjustment by the glass ribbon G of each region L1 ~ L3, controls the viscosity of glass ribbon G.In addition, annealing region L3 is preferably the temperature region lower than the softening temperature of glass ribbon G.
The viscosity being supplied to the melten glass of supply area L1 is such as 10
4dPas.
In shaped region L2, the viscosity of glass ribbon G is such as 10
4.5~ 10
7.5dPas.
In shaped region L2, in order to suppress the glass ribbon G in float tin groove 20 to shrink in the direction of the width, there are the multiple support rolls 40 suppressing glass ribbon G to shrink in the direction of the width.
Fig. 3 is the partial, longitudinal cross-sectional of the mounting structure representing support roll.As shown in Figure 3, support roll 40 is formed primarily of rotating member 50, transom 60 and shaft component 65.The front end of shaft component 65 is run through the sidewall 24 of bath 22 and inserts in float tin groove 20, and cardinal extremity is connected with the drive unit 34 be configured in outside sidewall 24.Drive unit 34 is made up of drivingmotor and retarding mechanism etc., and rotating member 50 is rotated to the direct of travel of glass ribbon G.The protuberance of the periphery of rotating member 50 is absorbed in the upper surface of glass ribbon G, and the condition of not shrinking in the direction of the width to make glass ribbon G applies tension force to the width end of glass ribbon G.
The temperature of the glass ribbon G in the L3 of annealing region is adjusted to such as less than 736 DEG C when soda-lime glass (soda-limeglass), is adjusted to such as less than 937 DEG C when non-alkali glass.Based on the temperature treatment that above-mentioned well heater controls, the viscosity of the glass ribbon G in the L3 of annealing region can be adjusted to and is such as greater than 10
7.65dPas.The viscosity of the glass ribbon G in the L3 of this annealing region with by compared with during shaped region L2, become harder.Driving roll 71A ~ the 71C of glass ribbon delivering mechanism 70 described later is to be formed the mode in glass ribbon G fed downstream direction (X-direction).
The temperature of the glass ribbon G in the L3 of annealing region is better the temperature of the scope that glass ribbon width can not reduce, and specifically than glass softening point, (glass viscosity is 10
7.65temperature during dPas) low temperature.The viscosity of the glass ribbon in the L3 of annealing region is preferably greater than 10
7.65dPas, more preferably 10
8.3more than dPas, preferred 10 further
9.3more than dPas.
Be configured with for the glass ribbon delivering mechanism (glass ribbon discharge unit) 70 by glass ribbon G fed downstream direction (X-direction) at annealing region L3.This glass ribbon delivering mechanism 70 comprises: multiple driving roll 71A ~ 71C glass ribbon G downstream driven in the mode sent by glass ribbon G by the translational speed of regulation and drive unit 78.
(glass ribbon delivering mechanism 70, molten tin bath case 80, annealing furnace 90)
Fig. 4 is the partial, longitudinal cross-sectional of the mounting structure representing driving roll.As shown in Figure 4, glass ribbon delivering mechanism 70 has multiple driving roll 71A ~ 71C and drive unit 78.Driving roll 71A ~ 71C is made up of pottery system or metal rotating member 120, transom 74 and shaft component 76.Above-mentioned metal is such as carbon steel, stainless steel etc.
The drive unit 78 of glass ribbon delivering mechanism 70 has the drivingmotor of drive shaft component 76 rotation respectively.Drive unit 78 is made up of drivingmotor and retarding mechanism etc., and controlled device 100 controls as the rotating speed corresponding to the translational speed of glass ribbon G, by the shaft component 76 of driving roll 71A ~ 71C, transom 74, the rotary driving force of rotating member 120 is passed to glass ribbon G.Take this, with the translational speed specified, glass ribbon G is sent to float tin groove outlet.
As depicted in figs. 1 and 2, molten tin bath case 80 and annealing furnace 90 is provided with in the outlet 29 than float tin groove 20 closer to downstream part.Promote and the multiple runner 82A ~ 82C carried at the molten tin bath case 80 glass ribbon G be provided with for the outlet 29 from float tin groove 20 is flowed out.Molten tin bath case 80 has the drive unit 84 driving runner 82A ~ 82C to rotate.Drive unit 84 is made up of drivingmotor and retarding mechanism etc., utilizes the control signal that self-control device 100 exports, and drives each runner 82A ~ 82C to rotate with the rotating speed specified.
Control device 100 carrys out drived control drive unit 78 to make the transporting velocity of the driving roll 71A ~ 71C moving glass band G condition identical with the transporting velocity of runner 82A ~ 82C moving glass band G.Therefore, relative velocity difference can not be produced between the translational speed and the transporting velocity of runner 82A ~ 82C moving glass band G of the glass ribbon G flowed out from float tin groove 20.Consequently, can not with flaw on the surface of the glass ribbon G contacted with each transport roller 92A ~ 92N of annealing furnace 90 with runner 82A ~ 82C, and can prevent that the waveform distortions of glass ribbon G and glass ribbon G's produce the cut-out etc. caused because of crackle.
In addition, in multiple runner 82A ~ 82C, can using at least close to the outlet 29 of float tin groove 20 configuration first runner 82A as rotating freely roller.
The drive unit 94 that annealing furnace 90 has multiple transport roller 92A ~ 92N and drives each transport roller 92A ~ 92N to rotate.Drive unit 94 is made up of drivingmotor and retarding mechanism etc., utilizes the control signal that self-control device 100 exports, and drives each transport roller 92A ~ 92N to rotate with the rotating speed specified.In addition, annealing furnace 90, to downstream extension, in fig. 1 and 2, only illustrates transport roller 92A, 92B, eliminates other transport rollers for convenience of explanation.
(rotating member 120)
Fig. 5 is the front view of the rotating member 120 representing driving roll 71A ~ 71C.Fig. 6 (a) ~ (c) is the example of the sectional view of VI-VI Line along Fig. 5.Fig. 7 is the figure amplifying the mounting structure representing rotating member 120.
Such as shown in Fig. 6 (a), periphery 122 complete cycle of the rotating member 120 shown in Fig. 5 is all cross-sectional shape is the bending protruded outward towards footpath.The axial central part of the periphery 122 of rotating member 120 is given prominence to outward towards footpath compared with axial both ends.Rotating member 120 does not have the concavo-convex of gear-like at periphery 122.Concavo-convex even without gear-like, rotating member 120 because be pottery system, so also frictional force can be produced on the surface of glass ribbon G.
The projection that multiple height is 0.1 ~ 10mm can be set at the periphery 122 of rotating member 120, also the groove that multiple degree of depth is 0.1 ~ 10mm can be set at the periphery 122 of rotating member 120.In addition, projection and groove can be set simultaneously at the periphery 122 of rotating member 120.The height of projection and the degree of depth of groove with the periphery 122 of rotating member 120 for benchmark is measured.The height of projection and the radius r shown in depth ratio Fig. 6 (a) of groove, Rb, the Rc shown in the radius of curvature R a shown in Fig. 6 (b) and Fig. 6 (c) are little.Thus, by arranging little projection, groove at periphery 122, produce frictional force on the surface of glass ribbon G.
No matter rotating member 120 is pottery system or metal, and all do not circulate in inside refrigeration agent, so near rotating member 120, glass ribbon G can not be cooled consumingly, is not easy to slide relative to glass ribbon G.
Such as, as shown in Fig. 6 (b), above-mentioned convex forniciform radius of curvature R a is preferably R1 ~ R100mm, more preferably R3 ~ R50mm when considering grasping force when engaging with glass ribbon G, further preferred R5 ~ R30mm, particularly preferably R10 ~ R20mm.In addition, in above-mentioned convex bending, such as, as shown in Fig. 6 (c), the radius of curvature R b of above-mentioned axial central part and the radius of curvature R c at above-mentioned axial both ends can be compound R.Now, radius of curvature R b, Rc are all preferably R1 ~ R100mm, more preferably R3 ~ R50mm, further preferred R5 ~ R30mm, particularly preferably R10 ~ R20mm.In addition, in above-mentioned convex bending, a part can have par, but when not having par, grasping force when engaging with glass ribbon G is more stable, so preferably.
If consider grasping force when engaging with glass ribbon G, then the width d of the radial direction of the rotating member 120 in the above-mentioned convex bending shown in Fig. 6 (b) is preferably more than 0.5mm, more preferably more than 1mm, further preferred more than 2mm.Similarly, the width d of the radial direction of the rotating member 120 in above-mentioned convex bending is preferably below 5mm, more preferably below 4mm.
About the radius r of the rotating member 120 shown in Fig. 6 (b), if consideration prevents transom 74 from contacting with glass ribbon G and the horizontality of shaft component 76, then preferred at more than 100mm, more preferably more than 150mm, preferred more than 180mm further, if the fine setting considering the position adjustment of rotating member 120 and glass ribbon G and the speed of rotation of rotating member 120, then preferred at below 350mm, more preferably below 300mm, further preferred below 270mm.
About the thickness w of rotating member 120, if consider grasping force when engaging with glass ribbon G, then preferred at more than 5mm, more preferably more than 10mm, preferred more than 15mm further, particularly preferably more than 30mm, improves the flatness of glass ribbon G and prevents the unwanted expansion grasping width if consider, then preferred at below 120mm, more preferably below 100mm, preferred below 80mm further, also further preferably below 60mm, particularly preferably below 40mm.
Like this, as shown in Fig. 5 (a) ~ (c), periphery 122 complete cycle of rotating member 120 is all cross-sectional shape is the bending protruded outward towards footpath, does not have the concavo-convex of gear-like, so not cracky, can reduce shaping and tooling cost.In addition, when the structure of Fig. 5 (a) ~ (c), stably glass ribbon G can be configured as plate glass, so preferably.But, can arrange little concavo-convex at the periphery 122 of rotating member 120.When periphery 122 arrange this little concavo-convex, more can obtain the frictional force on the surface to glass ribbon G.
Rotating member 120 shown in Fig. 4 does not have refrigerant flow path in inside, is formed by pottery.Pottery and the metallographic phase ratio such as steel in the past and refractory alloy, hot strength is high, so do not need necessary refrigerant flow path in the past.Therefore, because refrigeration agent is not in the internal flow of rotating member 120, so near rotating member 120, glass ribbon G is not easily cooled strongly.Consequently, the temperature of glass ribbon G and the thickness of glass ribbon G become stable, so the flatness of product glass plates improves.In addition, because near rotating member 120, glass ribbon G not easily by strong cooling, not easily hardening, even if so reduce at above-mentioned glass temperature, in annealing region L3 that glass surface is hardening, the gripping properties of rotating member 120 couples of glass ribbon G also improves.This effect glass ribbon G temperature step-down, flow direction downstream side is significant.
As pottery, be not particularly limited, such as silicon carbide (SiC) matter pottery, silicon nitride (Si can be used
3n
4) matter pottery etc.Silicon carbide and the silicon nitride patience to the steam of the spittle of molten metal S and molten metal S is high, in addition, hot strength and creep properties excellent.
The kind of pottery can be selected according to the kind etc. of product glass plates (namely being annealed and cooled sheet glass by glass ribbon G).Such as, when sheet glass is non-alkali glass, the silicon nitride pottery of resistance to sudden heating excellence is suitable.This is because: when non-alkali glass, there is the tendency that temperature in float tin groove 20 is high, so resistance to sudden heating is higher, the degree of freedom of operation is higher.In addition, be because: high temperature, easily becomes problem with the reactivity of glass ribbon G and molten tin S, but silicon nitride pottery also have lower tendency for reactivity.In addition, when the kind of sheet glass is soda-lime glass, outside silicon nitride matter pottery, Silicon carbide ceramic or alumina-based ceramic can be used.
The composition of sheet glass used in present embodiment such as represents containing following compositions with the mass percent of oxide compound benchmark: the SiO of 50 ~ 75%
2, 0.1 ~ 24% Al
2o
3, 0 ~ 12% B
2o
3, 0 ~ 10% MgO, the CaO of 0 ~ 14.5%, SrO, the BaO of 0 ~ 13.5%, the Na of 0 ~ 20% of 0 ~ 24%
2o, 0 ~ 20% K
2o, 0 ~ 5% ZrO
2, the MgO+CaO+SrO+BaO of 5 ~ 29.5%, the Na of 0 ~ 20%
2o+K
2o.
Non-alkali glass is alkali-free metal oxide (Na in fact
2o, K
2o, Li
2o) glass.Total amount (the Na of the content of the alkalimetal oxide in non-alkali glass
2o+K
2o+Li
2o) can be such as less than 0.1%.
Non-alkali glass such as represents with the mass percent of oxide compound benchmark, the SiO containing 50 ~ 70%, preferably 50 ~ 66%
2, 10.5 ~ 24% Al
2o
3, 0 ~ 12% B
2o
3, the MgO of 0 ~ 10%, preferably 0 ~ 8%, the CaO of 0 ~ 14.5%, SrO, the BaO of 0 ~ 13.5%, the ZrO of 0 ~ 5% of 0 ~ 24%
2, the MgO+CaO+SrO+BaO containing 8 ~ 29.5%, preferably 9 ~ 29.5%.
Non-alkali glass is being considered, in the deliquescent situation that strain point is high, preferably to represent containing SiO with the mass percent of oxide compound benchmark
2: 58 ~ 66%, Al
2o
3: 15 ~ 22%, B
2o
3: 5 ~ 12%, MgO:0 ~ 8%, CaO:0 ~ 9%, SrO:3 ~ 12.5%, BaO:0 ~ 2%, containing MgO+CaO+SrO+BaO:9 ~ 18%.
Non-alkali glass, when considering high strain-point, preferably represents containing SiO with the mass percent of oxide compound benchmark
2: 54 ~ 73%, Al
2o
3: 10.5 ~ 22.5%, B
2o
3: 0 ~ 5.5%, MgO:0 ~ 10%, CaO:0 ~ 9%, SrO:0 ~ 16%, BaO:0 ~ 2.5%, MgO+CaO+SrO+BaO:8 ~ 26%.
When the kind of sheet glass is non-alkali glass, in rotating member 120, the part at least contacted with glass ribbon G is silicon nitride pottery, need not the entirety of rotating member 120 be all that silicon nitride is ceramic.Such as, on the base material that can form at metal, carbon or other pottery, the layer of silicon nitride pottery is formed by film forming, joint or be fitted together to etc.Like this, diverse pottery can be used at each position of rotating member 120.In addition, in present embodiment, the entirety of rotating member 120 is formed by silicon nitride pottery.
Silicon nitride pottery can be that the mixed powder of the powder of the powder and sintering aid that comprise silicon nitride is made molding and the sintered compact sintering this molding and obtain.As sintering method, use conventional sintering process, pressure sintering method (comprising hot pressed sintering, gas pressure sintering) etc.As sintering aid, can use and such as be selected from aluminum oxide (Al
2o
3), magnesium oxide (MgO), titanium oxide (TiO
2), zirconium white (ZrO
2) and yttrium oxide (Y
2o
3) at least one.
Silicon nitride pottery is better that the content of aluminium (Al) is at below 0.1 quality %, preferably lower than 1 quality %, the content of magnesium (Mg) is at below 0.7 quality %, preferably lower than 0.7 quality %, and the content of titanium (Ti) is at below 0.9 quality %, preferably lower than 0.9 quality %.If Al content, Mg content and Ti content are in above-mentioned scope, be then not easy to react with glass ribbon G, in addition not easily glassivation band G, so good weather resistance can be obtained.In addition, Al content, Mg content and Ti content can be 0 quality % respectively.
Silicon nitride pottery is better the content of zirconium (Zr) is below 3.5 quality %, preferably lower than 3.5 quality %, the content of yttrium (Y) is more than 0.5 quality %, be preferably greater than 0.5 quality % and at below 10 quality %, more preferably less than 10 quality %.Zr and Y and Al and Mg, Ti compare, be not easily with the composition of glass ribbon G phase mutual diffusion, so can contain in above-mentioned scope.By containing in above-mentioned scope, the sintering of alpha-silicon nitride powders can be promoted.In addition, Zr is any composition, and Zr content can be 0 quality %.
In addition, the silicon nitride pottery of present embodiment is the sintered compact obtained by normal pressure-sintered method or pressure sintering method, but also can be the sintered compact obtained by reaction sintering.Reaction sintering is the method that the molding obtained by the powder forming by Pure Silicon Metal (Si) carries out heating in nitrogen atmosphere.Reaction sintering, because do not use sintering aid, so can obtain highly purified sintered compact, improves sintered compact to the weather resistance of glass ribbon G.
At the center of rotating member 120, run through and be formed with circular hole 124.Insertion rod portion 74c in circular hole 124.The internal diameter of circular hole 124 is larger than the external diameter of bar portion 74c.
As shown in Figure 7, run through at rotating member 120 and be formed with a pair patchhole 126.Axle portion 75,75 is inserted in each patchhole 126.The internal diameter of each patchhole is larger than the external diameter in corresponding axle portion 75,75.
(shaft component 76)
As shown in Figure 7, shaft component 76 can be formed by metallic substance such as stainless steel (being expressed as the steel of SUS in Japanese Industrial Standards (JIS)) and carbon steels (being expressed as the steel of SC in Japanese Industrial Standards (JIS)).Can be reeled in the periphery of shaft component 76 lagging material etc.
As shown in Figure 4, shaft component 76 runs through sidewall 24, and in the outside of float tin groove 20, the drive unit 78 formed with by electric motor and step-down gear etc. is connected.By making drive unit 78 work, centered by the central axis of shaft component 76, shaft component 76, transom 74 and rotating member 120 rotate integratedly.
Transom 74 is the components be connected with rotating member 120 by shaft component 76.Transom 74 is in such as tubular, and the external diameter of the end of shaft component 76 side of transom 74 is identical with internal diameter with the external diameter of the outer tube of shaft component 76 respectively with internal diameter.Transom 74 docks with the outer tube of shaft component 76, such as, connected coaxially by welding.Preferred transom 74 is the materials of easily welding with shaft component 76, and more preferably both are formed by same material.
(transom 74)
Transom 74 is integrated with shaft component 76 one-tenth, can be formed by the metallic substance such as steel and refractory alloy.Rotating member 120 is arranged on transom 74 in the mode that can dismantle.
Transom 74 has integratedly: the axle portion 74a integrated with shaft component 76; The flange part 74b of the ring-type outstanding outward to the footpath of axle portion 74a from the leading section of axle portion 74a; With the bar portion 74c that leading section and the axle portion 74a from axle portion 74a extends coaxially.
Axle portion 74a docks with shaft component 76, such as integrated by welding.Flange part 74b is outstanding outward to the footpath of axle portion 74a from the leading section (with the end of shaft component 76 opposition side) of axle portion 74a.
Bar portion 74c extends coaxially from the leading section of axle portion 74a and axle portion 74a.Bar portion 74c runs through rotating member 120, has outer screw section in leading section.By being fastened to nut 73 and the flange part 74b of outer screw section, moving axially of rotating member 120 is restricted.By being unloaded from outer screw section by nut 73, the dismounting of rotating member 120 can be carried out.
Transom 74 has axle portion 67 and 68, and axle portion 67 and 68 is fixed on the face of the front of flange part 74b, with the centerline axis parallel of bar portion 74c.By axle portion 75 and bar portion 74c, transom 74 and rotating member 120 can be made to rotate integratedly.
As shown in Figure 7, rotating member 120 is run through in axle portion 75 respectively, has outer screw section in leading section.By being fastened to nut 77 and the flange part 74b of outer screw section, moving axially of rotating member 120 is restricted.By being unloaded from outer screw section by nut 77, the dismounting of rotating member 120 can be carried out.
(variation of glass ribbon delivering mechanism)
Fig. 8 is the figure of the variation representing glass ribbon delivering mechanism.As shown in Figure 8, the glass ribbon delivering mechanism 70A of variation has multiple driving roll 71A ~ 71C and drive unit 78.Driving roll 71A ~ 71C is made up of the rotating member 72 of instrument steel, transom 74A and shaft component 76A.
(shaft component 76A)
Shaft component 76A has refrigerant flow path in inside, cooled by the refrigeration agent flowed in refrigerant flow path, shaft component 76A can be formed by metallic substance such as stainless steel (being expressed as the steel of SUS in Japanese Industrial Standards (JIS)) or carbon steels (being expressed as the steel of SC in Japanese Industrial Standards (JIS)).Can be reeled in the periphery of shaft component 76A lagging material etc.
Shaft component 76A is such as dual pipe, is made up of inner and outer tubes.Refrigerant flow path is formed by the inner space of interior pipe and the space that formed between the periphery and the inner peripheral surface of outer tube of interior pipe.
As refrigeration agent, use the gases such as liquid or air such as water.Refrigeration agent, by the inner space of interior pipe, after being supplied to the inner space of transom 74A and rotating member 72, by the space formed between the periphery and the inner peripheral surface of outer tube of interior pipe, is discharged to the outside.Be discharged to outside refrigeration agent to be cooled by water cooler, be again back to the inner space of interior pipe.In addition, the flow direction of refrigeration agent can be in the other direction.
As shown in Figure 8, shaft component 76A runs through sidewall 24, and in the outside of float tin groove 20, the drive unit 34 formed with by electric motor and step-down gear etc. is connected.By making drive unit 34 work, centered by the central axis of shaft component 76A, shaft component 76A, transom 74 and rotating member 72 rotate integratedly.
Transom 74A is the component be connected with rotating member 72 by shaft component 76A.Transom 74A has the inner space be communicated with the refrigerant flow path of shaft component 76A in inside.Transom 74A is in such as tubular, and the external diameter of the end of the shaft component 76A side of transom 74A is identical with internal diameter with the external diameter of the outer tube of shaft component 76A respectively with internal diameter.Transom 74A docks with the outer tube of shaft component 76A, such as, connected coaxially by welding.Preferred transom 74A is the material of easily welding with shaft component 76A, and more preferably both are formed by same material.
(rotating member 72 of driving roll)
Fig. 9 is the front view of the rotating member representing variation.Figure 10 is the partial enlarged drawing in the cross section of X-X line along Fig. 9.Figure 11 is the cross section that the figure of the protuberance that rotating member 72 is described, Figure 12 (a) represent the tapered part of protuberance, and Figure 12 (b) represents spacing and the height of protuberance.
As shown in Figure 9, rotating member 72 is in the form of annular discs, and the central axis of rotating member 72 and the central axis of shaft component 76 are on the same line.In addition, rotating member 72 contacts with the surface (being upper surface in present embodiment) of glass ribbon G in periphery.Glass ribbon G, by rotating, sends along prescribed direction (X-direction) by rotating member 72.
Glass ribbon G, by rotating, sends along prescribed direction (X-direction) by rotating member 72.
As shown in Figure 10 and Figure 11, rotating member 72 has the inner space 72c as refrigerant flow path in inside.This inner space 72c, by the opening portion formed in the rear side of rotating member 72, is communicated with the inner space of transom 74A.
Multiple protuberance 72b is in the circumferential to arrange at equal intervals.Due to protuberance 72b, even if to reduce at above-mentioned glass temperature, in the hardening annealing region L3 of glass surface, rotating member 72 also not easily produces relative to the edge, both sides of glass ribbon G and skids.In addition, as shown in Figure 10, the protuberance 72b of gear-like is formed with 2 row in the periphery of main part 72a, but also can form more than 3 row, also can only form 1 row.In addition, preventing the cooling of glass ribbon G if consider, is then better the protuberance 72b that formation 1 ~ 2 arranges.
Each protuberance 72b can be the tapered (such as tetrapyamid shape) being easily absorbed in glass ribbon G.
About protuberance 72b above-mentioned tapered part with perpendicular to shaft component 76A face angulation A or B (with reference to Figure 12 (a)), when considering the grasping force to glass ribbon G, be preferably less than 45 °, more preferably less than 30 °, preferably less than 25 ° further.In addition, if consider the intensity of above-mentioned tapered part, then angle A or B are preferably more than 15 °.
About the width C (with reference to Figure 12 (a)) of the leading section of the above-mentioned tapered part of protuberance 72b, if consider the grasping force to glass ribbon G, be then preferably below 2mm, more preferably below 1mm, further preferred below 0.5mm.Above-mentioned leading section must be not necessarily linearity, also can be curve-like or compound shape.
About the space D (with reference to Figure 12 (b)) of protuberance 72b, if consider the grasping force to glass ribbon G, then preferred at below 6.5mm, more preferably below 5.5mm.In addition, if consider intensity and the processibility of above-mentioned tapered part, then space D is preferably more than 1.5mm, more preferably more than 2.5mm.
About the height E (with reference to Figure 12 (b)) of protuberance 72b, if consider the grasping force to glass ribbon G, be then preferably more than 4mm, more preferably more than 5mm.In addition, if consider intensity and the processibility of above-mentioned tapered part, then height E is preferably below 8mm, more preferably below 7mm.
About the radius of rotating member 72, if consideration prevents transom 74 from contacting with glass ribbon G and the horizontality of shaft component 76, then preferred at more than 100mm, more preferably more than 150mm, preferred more than 180mm further, if the fine setting considering the position adjustment of rotating member 72 and glass ribbon G and the speed of rotation of rotating member 72, then preferred at below 350mm, more preferably below 300mm, further preferred below 270mm.
In rotating member 72, at least protuberance 72b is formed by tool steel, preferably Hot Work Tool Steel.In addition, in present embodiment, main part 72a is also formed by tool steel.
Here, " Hot Work Tool Steel " refers to the alloy tool steel of " hot forged mould is used " in " SKD " recorded in JISG4404.
As tool steel, be not particularly limited, the steel etc. being expressed as SKS, SKD, SKT, SKH in such as Japanese Industrial Standards (JIS) can be used.Tool steel can use such as SKS4, SKS41, SKS42, SKS43, SKS44, SKS1, SKS11, SKS2, SK21, SKS5, SKS51, SKS7, SKS8, SKS3, SKS31, SKS93, SKD1, SKD11, SKD12, SKD2, SKD4, SKD5, SKD6, SKD61, SKT1, SKT2, SKT3, SKT4, SKT5, SKT6, SKH2, SKH3, SKH4A, SKH4B, SKH40, SKH5, SKH51, SKH52, SKH53, SKH54, SKH55, SKH56, SKH57, SKH58, SKH59, SKH10 etc., or the exploitation steel of each company to be improved by these material categorys.Such exploitation steel take Fe as principal constituent, the content of preferred C is 0.3 ~ 2.5 quality %, the content of Si is 0 ~ 1.1 quality %, the content of Mn is 0 ~ 1.1 quality %, the content of the content of Ni to be the content of 0 ~ 2.0 quality %, Cr be 0 ~ 13.5 quality %, Mo is 0 ~ 5.0 quality %, the content of V is that the content of 0 ~ 4.0 quality %, W is 0 ~ 10.0 quality %, the content of Co is 0 ~ 10.0 quality %.As Hot Work Tool Steel, be not particularly limited, the improvement steel of SKD61 and each company can be used.Such Hot Work Tool Steel take Fe as principal constituent, the content of preferred C is 0.3 ~ 0.5 quality %, the content of Si is 0.3 ~ 1.20 quality %, the content of Mn is 0.4 ~ 0.9 quality %, the content of Ni is 0 ~ 1.8 quality %, the content of the content of Cr to be the content of 1.3 ~ 5.50 quality %, Mo be 0.4 ~ 2.7 quality %, V is 0.2 ~ 1.7 quality.From the viewpoint of processibility and cost, Hot Work Tool Steel is preferably SKD61.SKD61 take Fe as principal constituent, as Japanese Industrial Standards (JIS) defined, be the content of C be 0.35 ~ 0.42 quality %, the content of Si is 0.80 ~ 1.20 quality %, the content of Mn is 0.25 ~ 0.50 quality %, the content of P is 0 ~ 0.030 quality %, the content of S is 0 ~ 0.020 quality %, the content of Cr is 4.80 ~ 5.50 quality %, the content of Mo is 1.00 ~ 1.50 quality %, the content of V is the steel of 0.80 ~ 1.15 quality %, also can containing the impurity inevitably contained.SKD61 is also expressed as X40CrMoV5-1 in international standard (ISO4957:1999).
Compared with the material in the past such as tool steel and SUS or SC, hot strength is high, so can suppress the distortion of the protuberance 72b being absorbed in glass ribbon G, improves the weather resistance of rotating member 72.
Compared with material in the past such as tool steel and SUS or SC etc., hot strength is high, so can be done sharply by protuberance 72b in the mode making protuberance 72b easily be absorbed in glass ribbon G.Because the downstream side in float tin groove 20, glass ribbon G becomes colder, harder, so this Be very effective, in the temperature province that cannot use in the past, can use driving roll 71A ~ 71C.
As shown in figure 11, rotating member 72 is at the protective membrane 72d can at least partially with excellent corrosion resistance of outside surface.Particularly preferably there is the protective membrane 72d comprising chromium nitride or chromium metal.Chromium nitride and chromium metal for the spittle of molten tin S or the erosion resistance of steam higher than Hot Work Tool Steel, so the resistance to tin of rotating member 72 can be improved.
Protective membrane 72d covers the outside surface of protuberance 72b, and a part for the outside surface of main body covered portion 72a.
As the film of protective membrane 72d, there are such as plating, vapour deposition method, sputtering method, CVD, ion coating method, sputtering process etc., suitably can select according to the shape of protuberance 72b etc.Such as, when protuberance 72b is done sharp-pointed, the dry coating method such as preferred vapour deposition method, sputtering method, ion coating method.
(embodiment 2)
Figure 13 is the sectional elevation of an example of the schematic arrangement of the manufacturing installation 10A of sheet glass from top view embodiment 2.Figure 14 is the longitudinal section of an example of the schematic arrangement of the manufacturing installation 10A of the sheet glass observing embodiment 2 from side.In addition, in figs. 13 and 14, same-sign is marked with to the part identical with embodiment 1, and omits the description.
As shown in Figure 13 and Figure 14, there is above runner 82A ~ 82C that the manufacturing installation 10A of the sheet glass of embodiment 2 configures in the downstream of the outlet 29 of float tin groove 20 the pressing roller 171A ~ 171C of glass ribbon pressing mechanism (glass ribbon pressing unit) 170, and the drive unit 178 driving each pressing roller 171A ~ 171C to rotate.Drive unit 178 is made up of drivingmotor and retarding mechanism etc., and controlled device 100 controls as the rotating speed corresponding to the translational speed of glass ribbon G.
Pressing roller 171A ~ the 171C of this glass ribbon pressing mechanism 170 is configured in the runner 82A ~ 82C configured with the downstream exported at float tin groove and distinguishes in opposite directions.
Pressing roller 171A ~ 171C is same with above-mentioned driving roll 71A ~ 71C, is made up of pottery system or metal rotating member 120, transom 74 and shaft component 76.Pressing roller 171A ~ 171C is with the both sides portion contacts of the width with glass ribbon G, press runner 82A ~ 82C by the mode that edge, the both sides downstream of glass ribbon G is sent.Then, the glass ribbon G be sent from the outlet 29 of float tin groove 20 by the rotation of driving roll 71A ~ 71C is sent to downstream direction further by the rotation of pressing roller 171A ~ 171C and runner 82A ~ 82C.
As mentioned above, the pottery system of the rotating member 120 of pressing roller 171A ~ 171C or metal periphery 122 are such as shown in Fig. 6 (a), and complete cycle is all cross-sectional shape is the bending protruded outward towards footpath.In addition, because do not circulate refrigeration agent in the inside of pottery system and metal rotating member 120, so near rotating member 120, glass ribbon G can not be cooled consumingly, is not easy to produce relative to glass ribbon G to skid.
The shaft component 76 of pressing roller 171A ~ 171C extends to the outside of molten tin bath case 80, is connected with the drive unit 178 in the outside being configured in molten tin bath case 80.The control signal that drive unit 178 utilizes self-control device 100 to export, carries out rotation with the condition reaching the transporting velocity identical with runner 82A ~ 82C and controls.
Also the rotating member 72 of instrument steel can be used to replace above-mentioned pottery system or metal rotating member 120.Such as shown in Figure 8 and Figure 9, rotating member 72 is set to the rotating member 72 of the concavo-convex 72b in periphery with gear-like, not easily produces on the surface of glass ribbon G and skids.In addition, because pressing roller 171A ~ 171C is located at the outside of float tin groove 20, so above-mentioned water cooler and the path of refrigeration agent also can not be arranged.
In addition, the structure of any 1 or 2 arranged in above-mentioned pressing roller 171A ~ 171C can be also set to.
Pressing roller 171A ~ 171C can be set to the quantity corresponding to the configurable number of runner 82A ~ 82C, or, the also configurable quantity being less than the configurable number of runner 82A ~ 82C.
Also can using at least close to first pressing roller 171A of the outlet 29 of float tin groove 20 and runner 82A as rotating freely roller.
Above, preferred embodiment of the present invention and embodiment are described in detail, but the present invention is not subject to the restriction of above-mentioned specific embodiment and embodiment, in the scope of technology contents of the present invention described in the claims, can do various distortion, change.
Patent application claims, based on the right of priority of No. 2013-104537, the Japanese patent application of filing an application on May 16th, 2013, quotes its full content in present patent application.
Nomenclature
10, the manufacturing installation of 10A sheet glass
20 float tin grooves
22 baths
24 sidewalls
26 tops
28 spaces
29 outlets
30 gas feeding path
32 well heaters
32a heating part
34,78,84,94,178 drive units
40 support rolls
50,72,120 rotating members
60,74,74A transom
65,76,76A shaft component
67,68,75 axle portions
70,70A glass ribbon delivering mechanism
71A ~ 71C driving roll
72a main part
72b protuberance
72c inner space
72d protective membrane
73,77 nuts
74a axle portion
74b flange part
74c bar portion
80 molten tin bath casees
82A ~ 82C runner
90 annealing furnaces
92A ~ 92N transport roller
100 control device
122 peripherys
124 circular holes
126 patchholes
170 glass ribbon pressing mechanisms
171A ~ 171C pressing roller
G glass ribbon
S molten metal
L1 supply area
L2 shaped region
L3 annealing region
Claims (10)
1. the manufacturing installation of sheet glass, it is for supply melten glass from the influx of float tin groove to the molten metal in float tin groove, at the shaped region of described float tin groove, support roll is utilized to be expanded in the width direction by glass ribbon and be configured as the manufacturing installation of the sheet glass of specific thickness, it is characterized in that, annealing region between described shaped region and float tin groove outlet arranges the glass ribbon discharge unit had for the driving roll by described glass ribbon fed downstream direction, described glass ribbon discharge unit makes the both sides portion contacts of the width of described driving roll and described glass ribbon, and make described driving roll the mode in fed downstream direction, edge, described both sides to be driven.
2. the manufacturing installation of sheet glass as claimed in claim 1, it is characterized in that, described annealing region is the region that the temperature of described glass ribbon is lower than the softening temperature of glass ribbon.
3. the manufacturing installation of sheet glass as claimed in claim 1 or 2, it is characterized in that, described driving roll has the rotating member formed by pottery.
4. the manufacturing installation of sheet glass as claimed in claim 1 or 2, it is characterized in that, described driving roll has the rotating member formed by metal.
5. the manufacturing installation of sheet glass as claimed in claim 1 or 2, it is characterized in that, described driving roll has the rotating member being formed on the outer periphery multiple protuberance, and at least described protuberance is formed by tool steel.
6. the manufacturing installation of the sheet glass according to any one of Claims 1 to 5, is characterized in that, with the glass handling speed identical with the runner for being pulled out from described float tin groove by described glass ribbon to drive described driving roll.
7. the manufacturing installation of sheet glass as claimed in claim 6, is characterized in that, at least adjacent with described outlet runner rotates freely by contacting with described glass ribbon.
8. the manufacturing installation of the sheet glass according to any one of claim 1 ~ 7, it is characterized in that, clipping described glass ribbon, the glass ribbon had for the pressing roller by described glass ribbon fed downstream direction is set with described runner position in opposite directions and presses unit.
9. the manufacture method of sheet glass, it is for supply melten glass from the influx of float tin groove to the molten metal in float tin groove, at the shaped region of described float tin groove, support roll is utilized to be expanded in the width direction by glass ribbon and be configured as the manufacture method of the sheet glass of specific thickness, it is characterized in that, annealing region between described shaped region and float tin groove outlet arranges the glass ribbon discharge unit had for the driving roll by described glass ribbon fed downstream direction, described glass ribbon discharge unit makes the both sides portion contacts of the width of described driving roll and described glass ribbon, and make described driving roll the mode in fed downstream direction, edge, described both sides to be driven.
10. the manufacture method of sheet glass as claimed in claim 9, is characterized in that having the operation of annealing to the described glass ribbon utilizing described driving roll to send, cutting.
Applications Claiming Priority (3)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| JP2013104537 | 2013-05-16 | ||
| JP2013-104537 | 2013-05-16 | ||
| PCT/JP2014/056041 WO2014185131A1 (en) | 2013-05-16 | 2014-03-07 | Device for manufacturing glass sheet and method for manufacturing glass sheet |
Publications (2)
| Publication Number | Publication Date |
|---|---|
| CN105050970A true CN105050970A (en) | 2015-11-11 |
| CN105050970B CN105050970B (en) | 2018-05-15 |
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Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN201480016389.7A Active CN105050970B (en) | 2013-05-16 | 2014-03-07 | The manufacture device of glass plate and the manufacture method of glass plate |
Country Status (4)
| Country | Link |
|---|---|
| JP (1) | JP6103048B2 (en) |
| KR (1) | KR102153290B1 (en) |
| CN (1) | CN105050970B (en) |
| WO (1) | WO2014185131A1 (en) |
Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN112759233A (en) * | 2019-10-21 | 2021-05-07 | Ａｇｃ株式会社 | Glass plate manufacturing device and glass plate manufacturing method |
Citations (3)
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|---|---|---|---|---|
| GB1063981A (en) * | 1962-11-20 | 1967-04-05 | Pilkington Brothers Ltd | Improvements in or relating to the manufacture of flat glass |
| US3661548A (en) * | 1969-06-30 | 1972-05-09 | Nippon Sheet Glass Co Ltd | Apparatus for manufacturing glass ribbon by float process |
| JPH01219029A (en) * | 1988-02-29 | 1989-09-01 | Hoya Corp | Formation of thin sheet glass |
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| JPH11228163A (en) * | 1998-02-12 | 1999-08-24 | Asahi Glass Co Ltd | Method and apparatus for transporting ribbon-shaped material |
| JP5309858B2 (en) * | 2007-10-12 | 2013-10-09 | セントラル硝子株式会社 | Method for producing thin glass plate by float method |
| WO2010064948A1 (en) * | 2008-12-05 | 2010-06-10 | Artur Bagratovich Bagdasarov | Folding camping trailer |
| JP5565062B2 (en) | 2010-04-15 | 2014-08-06 | 旭硝子株式会社 | Float glass manufacturing apparatus and float glass manufacturing method |
| JPWO2011136122A1 (en) * | 2010-04-26 | 2013-07-18 | 日本電気硝子株式会社 | Glass plate manufacturing method and apparatus |
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2014
- 2014-03-07 WO PCT/JP2014/056041 patent/WO2014185131A1/en active Application Filing
- 2014-03-07 JP JP2015516969A patent/JP6103048B2/en not_active Expired - Fee Related
- 2014-03-07 CN CN201480016389.7A patent/CN105050970B/en active Active
- 2014-03-07 KR KR1020157023523A patent/KR102153290B1/en active IP Right Grant
Patent Citations (3)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| GB1063981A (en) * | 1962-11-20 | 1967-04-05 | Pilkington Brothers Ltd | Improvements in or relating to the manufacture of flat glass |
| US3661548A (en) * | 1969-06-30 | 1972-05-09 | Nippon Sheet Glass Co Ltd | Apparatus for manufacturing glass ribbon by float process |
| JPH01219029A (en) * | 1988-02-29 | 1989-09-01 | Hoya Corp | Formation of thin sheet glass |
Non-Patent Citations (1)
| Title |
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| 孙步功: "《机械制造基础》", 30 April 2008, 中国电力出版社 * |
Cited By (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN112759233A (en) * | 2019-10-21 | 2021-05-07 | Ａｇｃ株式会社 | Glass plate manufacturing device and glass plate manufacturing method |
| CN112759233B (en) * | 2019-10-21 | 2023-11-17 | Ａｇｃ株式会社 | Apparatus for manufacturing glass plate and method for manufacturing glass plate |
Also Published As
| Publication number | Publication date |
|---|---|
| KR102153290B1 (en) | 2020-09-08 |
| KR20160007483A (en) | 2016-01-20 |
| JP6103048B2 (en) | 2017-03-29 |
| CN105050970B (en) | 2018-05-15 |
| JPWO2014185131A1 (en) | 2017-02-23 |
| WO2014185131A1 (en) | 2014-11-20 |
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