CN105143119A - Support roller, method for molding glass plate, method for manufacturing glass plate, and device for manufacturing glass plate - Google Patents
Support roller, method for molding glass plate, method for manufacturing glass plate, and device for manufacturing glass plate Download PDFInfo
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- CN105143119A CN105143119A CN201480021500.1A CN201480021500A CN105143119A CN 105143119 A CN105143119 A CN 105143119A CN 201480021500 A CN201480021500 A CN 201480021500A CN 105143119 A CN105143119 A CN 105143119A
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- rotating member
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- glass ribbon
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- C—CHEMISTRY; METALLURGY
- C04—CEMENTS; CONCRETE; ARTIFICIAL STONE; CERAMICS; REFRACTORIES
- C04B—LIME, MAGNESIA; SLAG; CEMENTS; COMPOSITIONS THEREOF, e.g. MORTARS, CONCRETE OR LIKE BUILDING MATERIALS; ARTIFICIAL STONE; CERAMICS; REFRACTORIES; TREATMENT OF NATURAL STONE
- C04B35/00—Shaped ceramic products characterised by their composition; Ceramics compositions; Processing powders of inorganic compounds preparatory to the manufacturing of ceramic products
- C04B35/515—Shaped ceramic products characterised by their composition; Ceramics compositions; Processing powders of inorganic compounds preparatory to the manufacturing of ceramic products based on non-oxide ceramics
- C04B35/56—Shaped ceramic products characterised by their composition; Ceramics compositions; Processing powders of inorganic compounds preparatory to the manufacturing of ceramic products based on non-oxide ceramics based on carbides or oxycarbides
- C04B35/565—Shaped ceramic products characterised by their composition; Ceramics compositions; Processing powders of inorganic compounds preparatory to the manufacturing of ceramic products based on non-oxide ceramics based on carbides or oxycarbides based on silicon carbide
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- 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
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- C04B35/00—Shaped ceramic products characterised by their composition; Ceramics compositions; Processing powders of inorganic compounds preparatory to the manufacturing of ceramic products
- C04B35/515—Shaped ceramic products characterised by their composition; Ceramics compositions; Processing powders of inorganic compounds preparatory to the manufacturing of ceramic products based on non-oxide ceramics
- C04B35/58—Shaped ceramic products characterised by their composition; Ceramics compositions; Processing powders of inorganic compounds preparatory to the manufacturing of ceramic products based on non-oxide ceramics based on borides, nitrides, i.e. nitrides, oxynitrides, carbonitrides or oxycarbonitrides or silicides
- C04B35/584—Shaped ceramic products characterised by their composition; Ceramics compositions; Processing powders of inorganic compounds preparatory to the manufacturing of ceramic products based on non-oxide ceramics based on borides, nitrides, i.e. nitrides, oxynitrides, carbonitrides or oxycarbonitrides or silicides based on silicon nitride
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- C04B2235/00—Aspects relating to ceramic starting mixtures or sintered ceramic products
- C04B2235/02—Composition of constituents of the starting material or of secondary phases of the final product
- C04B2235/30—Constituents and secondary phases not being of a fibrous nature
- C04B2235/32—Metal oxides, mixed metal oxides, or oxide-forming salts thereof, e.g. carbonates, nitrates, (oxy)hydroxides, chlorides
- C04B2235/3205—Alkaline earth oxides or oxide forming salts thereof, e.g. beryllium oxide
- C04B2235/3206—Magnesium oxides or oxide-forming salts thereof
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- C04B2235/00—Aspects relating to ceramic starting mixtures or sintered ceramic products
- C04B2235/02—Composition of constituents of the starting material or of secondary phases of the final product
- C04B2235/30—Constituents and secondary phases not being of a fibrous nature
- C04B2235/32—Metal oxides, mixed metal oxides, or oxide-forming salts thereof, e.g. carbonates, nitrates, (oxy)hydroxides, chlorides
- C04B2235/3217—Aluminum oxide or oxide forming salts thereof, e.g. bauxite, alpha-alumina
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- C04B2235/00—Aspects relating to ceramic starting mixtures or sintered ceramic products
- C04B2235/02—Composition of constituents of the starting material or of secondary phases of the final product
- C04B2235/30—Constituents and secondary phases not being of a fibrous nature
- C04B2235/32—Metal oxides, mixed metal oxides, or oxide-forming salts thereof, e.g. carbonates, nitrates, (oxy)hydroxides, chlorides
- C04B2235/3224—Rare earth oxide or oxide forming salts thereof, e.g. scandium oxide
- C04B2235/3225—Yttrium oxide or oxide-forming salts thereof
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- C04B2235/00—Aspects relating to ceramic starting mixtures or sintered ceramic products
- C04B2235/02—Composition of constituents of the starting material or of secondary phases of the final product
- C04B2235/30—Constituents and secondary phases not being of a fibrous nature
- C04B2235/32—Metal oxides, mixed metal oxides, or oxide-forming salts thereof, e.g. carbonates, nitrates, (oxy)hydroxides, chlorides
- C04B2235/3231—Refractory metal oxides, their mixed metal oxides, or oxide-forming salts thereof
- C04B2235/3232—Titanium oxides or titanates, e.g. rutile or anatase
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- C04B2235/00—Aspects relating to ceramic starting mixtures or sintered ceramic products
- C04B2235/02—Composition of constituents of the starting material or of secondary phases of the final product
- C04B2235/30—Constituents and secondary phases not being of a fibrous nature
- C04B2235/32—Metal oxides, mixed metal oxides, or oxide-forming salts thereof, e.g. carbonates, nitrates, (oxy)hydroxides, chlorides
- C04B2235/3231—Refractory metal oxides, their mixed metal oxides, or oxide-forming salts thereof
- C04B2235/3244—Zirconium oxides, zirconates, hafnium oxides, hafnates, or oxide-forming salts thereof
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- C04B2235/00—Aspects relating to ceramic starting mixtures or sintered ceramic products
- C04B2235/70—Aspects relating to sintered or melt-casted ceramic products
- C04B2235/72—Products characterised by the absence or the low content of specific components, e.g. alkali metal free alumina ceramics
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- Ceramic Engineering (AREA)
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- Organic Chemistry (AREA)
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- Re-Forming, After-Treatment, Cutting And Transporting Of Glass Products (AREA)
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Abstract
Provided is a support roller that supports a strip-shaped glass ribbon and that comprises: a rotating member that comes into contact with the glass ribbon; a shaft member that has a refrigerant flow path in the interior thereof and that rotates together with the rotating member; and a protruding member that protrudes from the outer periphery of the shaft member and that comprises a branch path that branches from the refrigerant flow path. The rotating member is formed from ceramic. A heat transfer member that has higher thermal conductivity than the rotating member is arranged between the protruding member and the rotating member.
Description
Technical field
The present invention relates to the manufacturing installation of support roll, the forming method of sheet glass, the manufacture method of sheet glass and sheet glass.
Background technology
The forming method of sheet glass possesses operation melten glass being molded into dull and stereotyped banded glass ribbon.The glass ribbon that Thickness Ratio equilibrium thickness is thin can shrink in the direction of the width.Thus, in order to the thickness of glass ribbon is remained desired thickness, use the support roll (for example, referring to patent documentation 1) in the direction of the width glass ribbon being applied to tension force.Support roll uses in pairs, pushes the edge, both sides of glass ribbon.Multipair support roll configures with interval along the travel direction of glass ribbon.Support roll has the rotating member contacted with glass ribbon in leading section, by making rotating member rotate, sent by glass ribbon along prescribed direction.Glass ribbon, while prescribed direction movement, cools hardening gradually.
Prior art document
Patent documentation
Patent documentation 1: Japanese Patent Laid-Open 2011-225386 publication
Summary of the invention
Invent technical problem to be solved
Existing rotating member is formed by metallic substance, and thermotolerance is lower.On the other hand, there is such problem of easily breaking because thermograde is different in the rotating member formed by pottery.
The present invention does for solving the problems of the technologies described above, and its object is to provides a kind of support roll that the rotating member of pottery system can be suppressed to break.
The technical scheme that technical solution problem adopts
In order to solve the problems of the technologies described above, according to an aspect of the present invention, provide a kind of support roll,
Described support roll is the support roll supported dull and stereotyped banded glass ribbon, comprising:
Rotating member, described rotating member contacts with described glass ribbon;
Shaft component, described shaft component has refrigerant flow path in inside, and rotates together with described rotating member; And
Stretch out component, described in stretch out component there is point branch road of diverging out from described refrigerant flow path, and to stretch out from the periphery of described shaft component,
Described rotating member is formed by pottery,
The heat transfer member being configured with between component and described rotating member and there is the thermal conductivity higher than the thermal conductivity of described rotating member is stretched out described.
Invention effect
According to an aspect of the present invention, a kind of support roll suppressing the rotating member of pottery system to break can be provided.
Accompanying drawing explanation
Fig. 1 is the part sectioned view of the shaped device of the sheet glass representing an embodiment of the present invention.
Fig. 2 is the vertical view of the substructure of the shaped device of the sheet glass representing Fig. 1.
Fig. 3 is the sectional view of the support roll representing an embodiment of the present invention.
Fig. 4 is the chart of melten glass relative to the time variations of the wettability of sintered compact of representation case 1 ~ example 4.
Fig. 5 is the sectional view of the rotating member representing variation.
Fig. 6 is the first width figure of the size of the convex form of the rotating member representing Fig. 5.
Fig. 7 is the second width figure of the size of the convex form of the rotating member representing Fig. 5.
Fig. 8 is the sectional view of the rotating member representing another variation.
Embodiment
Below, with reference to accompanying drawing, embodiments of the present invention are described.In accompanying drawing below, the symbol identical or corresponding to identical or corresponding structure mark, and omit the description.
Fig. 1 is the part sectioned view of the shaped device of the sheet glass representing an embodiment of the present invention.Fig. 2 is the vertical view of the substructure of the shaped device of the sheet glass representing Fig. 1.
Melten glass is shaped to dull and stereotyped banded glass ribbon 14 by shaped device 10.Shaped device 10 comprises the bath 20 of accommodating molten metal (such as molten tin) 16, the melten glass be supplied to continuously on molten metal 16 is flowed along prescribed direction (X-direction in Fig. 2) on molten metal 16, and is shaped to dull and stereotyped banded.After glass ribbon 14 is cooled in the process flowed along prescribed direction (X-direction in Fig. 2), utilize runner, by glass ribbon 14 from molten metal pull-up, and in annealing furnace annealing, after glass ribbon is taken out of from annealing furnace, utilize stapling machine to cut into the size shape of regulation, and become goods, i.e. sheet glass.
Shaped device 10 comprises the bath 20 of accommodating molten metal 16, the sidewall 24 etc. being arranged at the top board 22 above bath 20 and being blocked in the gap between bath 20 and top board 22.Top board 22 is provided with gas supplying path 32, in gas supplying path 32, inserts the well heater 34 as heating source.
Reducing gas is supplied to the superjacent air space of molten metal 16 by gas supplying path 32, prevents the oxidation of molten metal 16.Reducing gas is such as containing the hydrogen of 1 ~ 15 volume % and the nitrogen of 85 ~ 99 volume %.
Above molten metal 16 and glass ribbon 14, be provided with multiple well heater 34 with interval along the travel direction of glass ribbon 14 and width.The output of well heater 34 is to make from upstream side towards downstream side, and the mode of the temperature of glass ribbon 14 step-down controls.In addition, the output of well heater 34 controls in the upper uniform mode of width (Y-direction) to make the thickness of glass ribbon 14.
Shaped device 10 has support roll 40, and this support roll 40 is for suppressing dull and stereotyped banded glass ribbon 14 contraction in the direction of the width.Support roll 40 uses in pairs, pushes the edge, both sides of glass ribbon 14.Multipair support roll 40 configures with interval along the travel direction of glass ribbon 14.Support roll 40 has the rotating member 42 contacted with glass ribbon 14 in leading section, by making rotating member 42 rotate, sent by glass ribbon 14 along prescribed direction.Glass ribbon 14 while prescribed direction movement, gradually cooling and hardening.
Fig. 3 is the sectional view of the support roll representing an embodiment of the present invention.Support roll 40 by rotating member 42, bearing components 44, as stretch out component flange 46, heat transfer member 48, pressing member 50, first elastomerics 54, heat insulating component 60, core component 64, second elastomerics 64 etc. is formed.
Rotating member 42 such as also can have concavo-convex 43 of the gear-like contacted with glass ribbon 14 as shown in the figure in periphery, to suppress the sideslip relative to glass ribbon 14.Gear-like concavo-convex 43 protuberance shape without particular limitation of, but such as also can be formed as front end tapered shape (such as tetrapyamid shape) as shown in Figure 3.As shown in Figure 1, concavo-convex 43 of gear-like forms row along the thickness direction (Y-direction of Fig. 1) of the periphery of rotating member 42, but also can form multiple row.
Rotating member 42 does not have refrigerant flow path in inside.In addition, because the shaft component 44 inserted in the through hole of rotating member 42 is components different from rotating member 42, therefore, the refrigerant flow path 45 being formed at shaft component 44 is the refrigerant flow paths of the outside being formed at rotating member 42.
Rotating member 42 is formed by the pottery that thermotolerance is higher than metallic substance.As the pottery of rotating member 42, be not particularly limited, but such as can use silicon carbide (SiC) matter pottery, silicon nitride (Si
3n
4) matter pottery etc.Silicon carbide and silicon nitride high relative to the tolerance of the spittle of molten metal 16 and the steam of molten metal 16, in addition, excellent in hot strength and creep properties.
The kind of the pottery of rotating member 42 can according to selections such as the kinds of glass.Such as, when non-alkali glass, because the mold temperature of glass is high, therefore preferred silicon nitride excellent on resistance to sudden heating pottery.Silicon nitride pottery with the reactivity of non-alkali glass this aspect low on be also excellent.On the other hand, when receiving lime glass, outside silicon nitride pottery, Silicon carbide ceramic and alumina-based ceramic can also be used.
When non-alkali glass, as long as the part at least contacted with glass ribbon 14 in rotating member 42 is silicon nitride pottery, rotating member 42 entirety may not be silicon nitride pottery.Such as, the layer of silicon nitride pottery also can be formed on the base material be made up of the pottery outside Silicon carbide ceramic.
Silicon nitride pottery also can be the sintered compact after the formed body be made to the mixed powder of the powder with the powder containing silicon nitride and sintering aid sinters.As sintering method, there is normal pressure-sintered method, pressure sintering method (comprising hot pressed sintering, gaseous tension sintering).As sintering aid, such as, can use and 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.
In silicon nitride pottery, the content of aluminium (Al) is at below 0.1 quality %, be preferably lower than 1 quality %, the content of magnesium (Mg) is at below 0.7 quality %, be preferably lower than 0.7 quality %, the content of titanium (Ti), at below 0.9 quality %, is preferably lower than 0.9 quality %.If Al content, Mg content and Ti content are above-mentioned scope, then rotating member 42 is low with the reactivity of glass ribbon 14, and in addition, rotating member 42 and glass ribbon 14 not easily stick, and can obtain good weather resistance.Al content, Mg content and Ti content also can be respectively 0 quality %.
In silicon nitride pottery, the content of zirconium (Zr) is at below 3.5 quality %, be preferably lower than 3.5 quality %, the content of yttrium (Y) at more than 0.5 quality %, be preferably higher than 0.5 quality %, and at below 10 quality %, be preferably lower than 10 quality %.Compared with Al and Mg, Ti, Zr and Y is not easy the composition with the mutual diffusion of glass ribbon 14 phase, therefore also can contain Zr and Y in above-mentioned scope.By containing Zr and Y in above-mentioned scope, the sintering of silicon nitride powder can be promoted.Zr is any composition, and Zr content also 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 heated in nitrogen atmosphere by the formed body of the powder compacting by Pure Silicon Metal (Si).Reaction sintering, owing to not using sintering aid, therefore can obtain highly purified sintered compact, can improve the weather resistance of sintered compact relative to glass ribbon 14.
As the sheet glass of goods, being not particularly limited, such as, can be the sheet glass of the flat-panel monitor (FPD) such as liquid-crystal display (LCD) and plasma display (PDP), OLED display.In recent years, the slimming of FPD advances, and the thin plateization of the sheet glass of FPD also advances.Particularly, when glass for display substrate plate, preferred below 0.7mm, more preferably below 0.3mm is required, more preferably the sheet glass of below 0.2mm, particularly preferably below 0.1mm.Thus, the lower thickness of glass ribbon 14, while the convergent force enhancing of the width of glass ribbon 14, the mold temperature of glass ribbon 14 uprises.To describe in detail hereinafter, the support roll 40 of present embodiment due to rotating member 42 and as the flange 46 stretching out component between be configured with heat conduction member 48, this heat conduction member 48 has the thermal conductivity higher than rotating member 42, therefore rotating member 42 can be suppressed to break, be suitable for the shaping of the sheet glass of FPD.
Kind as the sheet glass of goods is not particularly limited.The composition of sheet glass such as represents, containing SiO with the quality % of oxide compound benchmark
2: 50 ~ 75%, Al
2o
3: 0.1 ~ 24%, B
2o
3: 0 ~ 12%, MgO:0 ~ 10%, CaO:0 ~ 14.5%, SrO:0 ~ 24%, BaO:0 ~ 13.5%, Na
2o:0 ~ 20%, K
2o:0 ~ 20%, ZrO
2: 0 ~ 5%, MgO+CaO+SrO+BaO:5 ~ 29.5%, Na
2o+K
2o:0 ~ 20%.
Sheet glass such as also can be formed by non-alkali glass.Non-alkali glass is in fact not containing alkalimetal oxide (Na
2o, K
2o, Li
2o etc.) glass.In non-alkali glass, the total amount of the content of alkalimetal oxide can at below 0.1 quality %.
Non-alkali glass such as represents, containing SiO with the quality % of oxide compound benchmark
2: 50 ~ 75% (preferably 50 ~ 66%), Al
2o
3: 10.5 ~ 24%, B
2o
3: 0 ~ 12%, MgO:0 ~ 10% (preferably 0 ~ 8%), CaO:0 ~ 14.5%, SrO:0 ~ 24%, BaO:0 ~ 13.5%, ZrO
2: 0 ~ 5%, MgO+CaO+SrO+BaO:8 ~ 29.5% (preferably 9 ~ 29.5%).
In non-alkali glass, when realizing high DEFORMATION POINTS and high resolution at the same time, preferably represent, containing SiO with the quality % 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%, MgO+CaO+SrO+BaO:9 ~ 18%.
In non-alkali glass, when special hope obtains high DEFORMATION POINTS, preferably represent, containing SiO with the quality % 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%.
As shown in Figure 1, shaft component 44 runs through sidewall 24, and is connected with the drive unit 36 be configured at outside sidewall 24.Drive unit 36 is made up of electric motor or step-down gear etc., and shaft component 44 is rotated centered by the medullary ray of shaft component 44.Shaft component 44 is inserted through in the through hole of the central part being formed at rotating member 42, rotates together with rotating member 42.
Shaft component 44 such as can be formed as cylindric by metallic substance, has the refrigerant flow path 45 that the refrigeration agents such as water supply flow through in inside.As long as refrigeration agent fluid, it also can be air etc.
Flange 46 also can be integrally formed with shaft component 44.Flange 46 extending radially out in the midway of shaft component 44 from the rotating member outer Zhou Dynasty 42 of shaft component 44.Be formed with point branch road of diverging out from the refrigerant flow path 45 of shaft component 44 in the inner circumferential of flange 46, point branch road 47 extends near the periphery of flange 46.Utilize the refrigeration agent flow through in point branch road 47, flange 46 is cooled.
Heat transfer member 48 is such as formed as ring-type.The internal diameter of heat transfer member 48 is larger than the external diameter of shaft component 44, and heat transfer member 48 does not contact with shaft component 44.Heat transfer member 48 is by being formed in locating by the locating slot 49 on the side of rotating member 42 side of flange 46.
Heat transfer member 48 is arranged between flange 46 and rotating member 42, has the thermal conductivity higher than rotating member 42, will transmit the heat dissipation of the rotating member 42 come to flange 46 from glass ribbon 14.The periphery of rotating member 42 remains on and with glass ribbon 14, the temperature of such degree can not occur to bind, thus can reduce rotating torques.
At this, the thermal conductivity of heat conduction member 48 and the thermal conductivity of rotating member 42 measure under the use temperature of support roll 40.Under the use temperature of support roll 40, the thermal conductivity of heat conduction member 48 is preferably 30 ~ 200W/ (m DEG C).
Because flange 46 pairs of heat conduction members 48 cool, heat conduction member 48 cools rotating member 42 from the side, therefore with rotating member 42 from compared with the cooled situation of inner circumferential, the thermograde in the radial direction of rotating member 42 can be made to become mild, the breakage caused because of the thermal stresses of rotating member 42 can be suppressed.
As long as heat transfer member 48 has the thermal conductivity higher than rotating member 42, such as, formed by metal and carbon etc.Metal and carbon ratio pottery softness, thus heat conduction member 48 and rotating member 42 easily close contact.Therefore, thermal contact resistance is low, and heat transfer efficiency is good.From the viewpoint of thermotolerance, particularly preferably carbon.
When heat conduction member 48 is formed by the material identical with flange 46, heat conduction member 48 and flange 46 also can be made to be integrally formed.
Rotating member 42 is pressed into heat conduction member 48 by pressing member 50, reduces the thermal contact resistance between heat conduction member 48 and rotating member 42.Pressing member 50 is that baseline configuration is in the side contrary with heat conduction member 48 with rotating member 42.
Pressing member 50 is such as made up of pressing member body 51 and contact part 52.Pressing member body 51 is such as formed by metal, and shaft component 44 is inserted through in the through hole of the central part being formed at pressing member body 51.Contact part 52 also can be formed as ring-type in the same manner as heat transfer member 48.The external diameter of contact part 52 is larger than the internal diameter of shaft component 44, and contact part 52 intensively pushes the opposite side of the contact part of the heat conduction member 48 in rotating member 42 in the mode do not contacted with shaft component 44.Contact part 52 is formed by metal or carbon.From the viewpoint of thermotolerance, particularly preferably carbon.Contact part 52 is by being formed in locating by the locating slot 53 on the side of rotating member 42 side of pressing member body 51.When contact part 52 is formed by the material identical with pressing member body 51, contact part 52 and pressing member body 51 also can be made to be integrally formed.
The pressing member 50 that first elastomerics 54 freely can be shifted along the axis of shaft component 44 pushes towards rotating member 42.First elastomerics 52 is such as made up of disc spring, and shaft component 44 is inserted through in the through hole being formed at the first elastomerics 54.Shaft component 44 has screw spindle part 44a, between the first nut 58 that the first elastomerics 54 is configured in the state of shrinking than state of nature and screw spindle part 44a screws togather and rotating member 42.When producing dimensional change because of temperature variation etc., utilizing pressing member 50, all the time rotating member 42 being pressed to heat transfer member 48.
In addition, the first elastomerics 54 of present embodiment is made up of disc spring, but also can be made up of whisker, and the structure of the first elastomerics 54 is not particularly limited.In addition, can there is no the first elastomerics 54 yet, in this case, by the first nut 58 is screwed, the first nut 58 pairs of pressing members 50 are pressed, and makes pressing member 50 that rotating member 42 is urged to heat conduction member 48.
Heat insulating component 60 is such as formed as tubular.From the viewpoint of processibility and cost, heat insulating component 60 also can be divided into multiple dividing body (such as two semi-cut bodies) in the circumferential.
Heat insulating component 60 is configured between the inner circumferential of rotating member 42 and the periphery of shaft component 44, has the thermal conductivity lower than rotating member 42, suppresses the heat dissipation of rotating member 42 to shaft component 44.Thermograde in the radial direction of rotating member 42 becomes more mild, can suppress the breakage caused because of the thermal stresses of rotating member 42.
At this, the thermal conductivity of heat insulating component 60 and the thermal conductivity of rotating member 42 measure under the use temperature of support roll 40.Under the use temperature of support roll 40, the thermal conductivity of heat insulating component 60 is preferably 0.01 ~ 30W/ (m DEG C).
As long as the thermal conductivity of the material of the material thermal conductivity ratio rotating member 42 of heat insulating component 60 is low, is not particularly limited, such as, can uses slate etc.Slate can be the natural slate that is made up of rock such as such as slate clay and be mixed in the artificial slate of filamentary material in cement any one.
The periphery of heat insulating component 60 is the contact surfaces contacted with the inner peripheral surface of rotating member 42, is more along the medullary ray of rotating member 42 towards flange 46, the taper that diameter diminishes.Similarly, the inner peripheral surface of rotating member 42 is the contact surfaces contacted with the periphery of heat insulating component 60, is more along the medullary ray of rotating member 42 towards flange 46, the taper that diameter diminishes.If the contact surface of at least any one party in the heat insulating component contacted with each other 60 and rotating member 42 is taper, then can reduce loosening between heat insulating component 60 and rotating member 42.In addition, taper towards also can be contrary, each contact surface also can be that diameter becomes large taper more along the medullary ray of rotating member 42 towards flange 46.
Are components that the medullary ray of heat insulating component 60 is alignd with the medullary ray of shaft component 44 to core component 64, such as, are formed as tubular, and are configured between the inner circumferential of heat insulating component 60 and the periphery of shaft component 44.Also can be formed by metal in the same manner as shaft component 44 core component 64.Due to less to the thermal expansion difference of core component 64 and shaft component 44, therefore can make to set narrower to the gap between core component 64 and shaft component 44, can reduce loosening between core component 64 and shaft component 44.
When heat insulating component 60 is circumferentially divided into multiple dividing body, core component 64 is played to the effect of the aligned in position making multiple dividing body.
Being the contact surfaces contacted with the inner peripheral surface of heat insulating component 60 to the periphery of core component 64, is more along the medullary ray of rotating member 42 towards flange 46, the taper that diameter diminishes.Similarly, the inner peripheral surface of heat insulating component 60 is the contact surfaces contacted with to the periphery of core component 64, is more along the medullary ray of rotating member 42 towards flange 46, the taper that diameter diminishes.If what contact with each other is taper to the contact surface of at least any one party in core component 64 and heat insulating component 60, then can reduce loosening between core component 64 and heat insulating component 60.In addition, taper towards also can be contrary, each contact surface also can be that diameter becomes large taper more along the medullary ray of rotating member 42 towards flange 46.
In addition, in the present embodiment, be configured with core component 64 between the inner circumferential of heat insulating component 60 and the periphery of shaft component 44, but also not to core component 64, can also have a little gap between the inner circumferential of heat insulating component 60 and the periphery of shaft component 44.
Second elastomerics 66 by can along the axis of shaft component 44 be freely shifted to core component 64, the heat insulating component 60 that freely can be shifted along the axis of shaft component 44 pushes towards flange 46.Second elastomerics 66 is such as made up of disc spring, and shaft component 44 is inserted through in the through hole being formed at the second elastomerics 66.The second nut 68 that second elastomerics 66 is configured in the state of shrinking than state of nature and the screw spindle part 44a of shaft component 44 screws togather and between core component 64.When there is dimensional change because of temperature variation etc., can prevent from separating core component 64 and heat insulating component 60, in addition, can prevent heat insulating component 60 from separating with rotating member 42.
In addition, the second elastomerics 66 of present embodiment is made up of disc spring, but also can be made up of whisker, is not particularly limited the structure of the second elastomerics 66.When not to core component 64, the second elastomerics 66 contacts with heat insulating component 60, is pushed by heat insulating component 60 towards flange 46.In addition, can there is no the second elastomerics 66 yet, in this case, by the second nut 68 is screwed, make core component 64 and heat insulating component 60 close contact, make heat insulating component 60 and rotating member 42 close contact.
In the support roll 40 of present embodiment, consider the formability of glass ribbon 14, preferably use in the forming area (glass ribbon 14 is the region of the range of viscosities of 104.5 ~ 107.5dPas) and the first low-temperature region (glass ribbon 14 is the region of the range of viscosities of 106.7 ~ 107.65dPas) of shaped device 10, more preferably use in forming area (glass ribbon 14 is the region of the range of viscosities of 104.5 ~ 107.5dPas) and the second low-temperature region (glass ribbon 14 is the region of the range of viscosities of 107.5 (not containing) ~ 107.65dPas).When non-alkali glass, glass ribbon 14 is the temperature range that the region of the range of viscosities of 104.5 ~ 107.5dPas is equivalent to that glass ribbon 14 is in 946 ~ 1200 DEG C, glass ribbon 14 is the temperature range that the region of the range of viscosities of 106.7 ~ 107.65dPas is equivalent to that glass ribbon 14 is in 937 ~ 1000 DEG C, and the region of the range of viscosities of glass ribbon 14 (not containing the) ~ 107.65dPas that is 107.5 is equivalent to glass ribbon 14 and is in more than 937 DEG C, temperature range lower than 946 DEG C.
In addition, support roll 40 also can combinationally use with the support roll of general structure, can also use in a part for forming area, the first low-temperature region, the second low-temperature region etc.
(embodiment)
In example 1 ~ example 4, sintered compact is studied relative to the relation between impurity contained in the wettability of melten glass and sintered compact.
Evaluate test film and test board according to each example, to different silicon nitride (Si
3n
4) sintered compact of matter pottery carries out processing to make.
The content of the impurity in sintered compact is measured from the sintered compact test film cut that is square by glow discharge spectrometry analysis.Impurity as determination object is the impurity comprised as sintering aid, is aluminium (Al), magnesium (Mg), titanium (Ti), zirconium (Zr), yttrium (Y).
Utilize high temperature wettability trier (Ai Fake science and engineering Co., Ltd. (ア Le バ ッ Network science and engineering society) system, WET1200), measure the wettability of sintered compact relative to melten glass.Specifically, the square glass sheet of non-alkali glass (Asahi Glass Co., Ltd (Asahi Glass society) system, AN100) is processed on the test film that thickness is 1mm, in nitrogen atmosphere, 1150 DEG C are warming up in 10 minutes, and keep ten minutes at 1150 DEG C, to generate melten glass, then in 90 seconds, temperature is reduced to 1050 DEG C from 1150 DEG C, and maintain 1050 DEG C, the contact angle of drop is measured.After being determined at moment of being reduced to 1050 DEG C and from this moment two hours, carry out after four hours, after six hours, after eight hours.Contact angle is larger, means that melten glass is more not easy to bedew on sintered compact, therefore represents that the reactivity of melten glass and sintered compact is low.In addition, the time variations of contact angle is fewer, means that more easily continuing this adhesional wetting not easily spends.
The result evaluated is shown in table 1 and Fig. 4.In the diagram, the longitudinal axis represents contact angle (°), and transverse axis represents the elapsed time (h: hour).In addition, 10000 quality ppm are 1 quality %.
Table 1
From table 1 and Fig. 4, if the content of Al is at below 0.1 quality %, be preferably lower than 0.1 quality %, the content of Mg is at below 0.7 quality %, be preferably lower than 0.7 quality %, the content of Ti is at below 0.9 quality %, be preferably lower than 0.9 quality %, the content of Zr is at below 3.5 quality %, be preferably lower than 3.5 quality %, the content of Y is at more than 0.5 quality % and at below 10 quality %, be preferably higher than 0.5 quality %, lower than 10 quality %, then the time variations of contact angle is fewer, contact angle after 8 hours is larger, therefore good weather resistance can be obtained.
Above, the embodiment etc. of the manufacture method of support roll, sheet glass and the manufacturing installation of sheet glass is illustrated, but the present invention is not limited to above-mentioned embodiment.Carry out being out of shape and improving in the scope of the content that the present invention can record in detail in the claims.
Such as, the support roll 40 of above-mentioned embodiment can use being molded over by glass ribbon 14 in the float glass process on molten metal 16, but also may be used for other forming method, such as, also may be used for fusion method.
The rotating member 42 of above-mentioned embodiment has the concavo-convex of gear-like in periphery, but also can not have the concavo-convex of gear-like in periphery.Owing to not flowing in the inside of refrigeration agent at rotating member, therefore near rotating member, glass ribbon can not strongly be cooled, and is not easy hardening.Thus, even if do not have the concavo-convex of gear-like, rotating member is also easy to be pressed glass ribbon, thus can suppress the contraction on the width of glass ribbon.
Fig. 5 is the sectional view of the rotating member representing variation.Fig. 6 is the first width figure of the size of the convex form of the rotating member representing Fig. 5.Fig. 7 is the first width figure of the size of the convex form of the rotating member representing Fig. 5.
Use the rotating member 242 shown in Fig. 5, to replace the rotating member 42 shown in Fig. 3.The cross-sectional shape of the periphery complete cycle of rotating member 242 is formed as the bending protruded to radial outside, and axial central part is than protruding outside more towards radial direction of axial both ends.The periphery complete cycle of rotating member 242 has identical cross-sectional shape.Owing to there is no the concavo-convex of gear-like, be therefore not easy breakage, can shaping and tooling cost be reduced.
Such as, as shown in Figure 6, the grasping force between consideration and glass ribbon 14, the forniciform radius of curvature R a of above-mentioned protrusion is preferably R1 ~ R100mm, is more preferably R3 ~ R50, is more preferably R5 ~ R30, is particularly preferably R10 ~ R20.In addition, in the bending of above-mentioned protrusion, such as shown in Figure 7, 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 also can be compound R.Now, radius of curvature R b, Rc are all preferably R1 ~ R100mm, are more preferably R3 ~ R50, are more preferably R5 ~ R30, are particularly preferably R10 ~ R20.In addition, in the bending of above-mentioned protrusion, also can have par in a part, but more can make to stablize with the grasping force of glass ribbon 14 owing to not having par, thus preferably.
Consider and grasping force between glass ribbon 14, the width d of the radial direction of the forniciform rotating member 242 of the above-mentioned protrusion shown in Fig. 6 is preferably more than 0.5mm, is more preferably more than 1mm, is more preferably more than 2mm.Similarly, the width d of the radial direction of the forniciform rotating member 242 of above-mentioned protrusion is preferably below 5mm, is more preferably below 4mm.
Consider and prevent flange 46 and the contact of glass ribbon 14 and the horizontality of shaft component 44, the radius r of the rotating member 242 shown in Fig. 6 is preferably more than 100mm, is more preferably more than 150mm, is more preferably more than 180mm; Consider the fine setting of the speed of rotation of position adjustments between rotating member 242 and glass ribbon 14 and rotating member 242, the radius r of rotating member 242 is preferably less than 350, is more preferably below 300mm, is more preferably below 270mm.
Consider and grasping force between glass ribbon 14, the thickness w of rotating member 242 is preferably more than 5mm, is more preferably more than 10mm, is more preferably more than 15mm, is particularly preferably more than 30mm; Consider the flatness of raising glass ribbon 14 and prevent the unwanted expansion grasping width, the thickness w of rotating member 242 is preferably below 120mm, is more preferably below 100mm, is more preferably below 60mm, is particularly preferably below 40mm.
Fig. 8 is the sectional view of the rotating member representing another variation.Use the rotating member 342 shown in Fig. 8, to replace the rotating member 42 shown in Fig. 3.The cross-sectional shape of the periphery of rotating member 342 is smooth, and rotating member 342 has the boundary portion of cross-sectional shape with fillet between periphery and side.Boundary portion is formed by modes such as chamferings.
In the variation shown in the variation shown in Fig. 5 and Fig. 8, also can the projection that multiple height is 0.1 ~ 10mm be set on the periphery of rotating member, can also the groove that multiple degree of depth is 0.1 ~ 10mm be set on the periphery of rotating member.In addition, projection and groove two side can also be provided with on the periphery of rotating member.The height of projection and the degree of depth of groove with the periphery of rotating member for reference plane carries out computation and measurement.The height of projection and the radius r shown in depth ratio Fig. 6 of groove, the radius of curvature R b shown in the radius of curvature R a shown in Fig. 6 and Fig. 7, Rc are little.
This application claims the right of priority of No. 2013-104378, the Japanese Patent Patent that on May 16th, 2013 files an application to Japan Office, and include the full content of No. 2013-104378, Japanese Patent Patent in the application.
(nomenclature)
10 shaped devices
40 support rolls
42 rotating members
43 is concavo-convex
44 shaft components
46 flanges (stretching out component)
48 heat transfer members
50 pressing members
51 pressing member bodies
52 contact parts
54 first elastomericss
60 heat insulating components
64 pairs of core components
66 second elastomericss.
Claims (15)
1. a support roll, supports dull and stereotyped banded glass ribbon, it is characterized in that, comprising:
Rotating member, described rotating member contacts with described glass ribbon;
Shaft component, described shaft component has refrigerant flow path in inside, and rotates together with described rotating member; And
Stretch out component, described in stretch out component there is point branch road of diverging out from described refrigerant flow path, and to stretch out from the periphery of described shaft component,
Described rotating member is formed by pottery,
The heat transfer member being configured with between component and described rotating member and there is the thermal conductivity higher than the thermal conductivity of described rotating member is stretched out described.
2. support roll as claimed in claim 1, is characterized in that having described rotating member by the pressing member be pressed on described heat transfer member.
3. support roll as claimed in claim 2, is characterized in that, having can the described pressing member of free displacement pushes to described rotating member on the direction of principal axis of described shaft component the first elastomerics.
4. the support roll according to any one of claims 1 to 3, is characterized in that,
Described shaft component through the through hole being formed at described rotating member,
Between the inner circumferential and the periphery of described shaft component of described rotating member, configuration has the heat insulating component of the thermal conductivity lower than the thermal conductivity of described rotating member.
5. support roll as claimed in claim 4, it is characterized in that, the contact surface contacted with described heat insulating component in described rotating member is taper.
6. the support roll as described in claim 4 or 5, is characterized in that, the contact surface contacted with described rotating member in described heat insulating component is taper.
7. the support roll as described in claim 5 or 6, is characterized in that, have can on the direction of principal axis of described shaft component free displacement described heat insulating component to described stretch out component pushing the second elastomerics.
8. the support roll according to any one of claim 1 ~ 7, is characterized in that, the part at least contacted with described glass ribbon in described rotating member is formed by silicon nitride pottery.
9. support roll as claimed in claim 8, it is characterized in that, described silicon nitride pottery is sintered compact, and the content of aluminium (Al) is at below 0.1 quality %, the content of magnesium (Mg) is at below 0.7 quality %, and the content of titanium (Ti) is at below 0.9 quality %.
10. support roll as claimed in claim 9, it is characterized in that, in described silicon nitride pottery, the content of zirconium (Zr) is at below 3.5 quality %, and the content of yttrium (Y) is at more than 0.5 quality %, below 10 quality %.
11. support rolls according to any one of claim 1 ~ 10, is characterized in that, the cross-sectional shape of the periphery complete cycle of described rotating member is formed as the bending protruded to radial outside.
12. support rolls according to any one of claim 1 ~ 10, it is characterized in that, described rotating member has the concavo-convex of gear-like in periphery.
The forming method of 13. 1 kinds of sheet glass, is characterized in that, has the operation using the support roll according to any one of claim 1 ~ 12 to support dull and stereotyped banded glass ribbon.
The manufacture method of 14. 1 kinds of sheet glass, is characterized in that, has the operation using the support roll according to any one of claim 1 ~ 12 to support dull and stereotyped banded glass ribbon, afterwards, has the operation of described glass ribbon annealing, cut-out.
The shaped device of 15. 1 kinds of sheet glass, is characterized in that, has the support roll according to any one of claim 1 ~ 12.
Applications Claiming Priority (3)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| JP2013104378 | 2013-05-16 | ||
| JP2013-104378 | 2013-05-16 | ||
| PCT/JP2014/056033 WO2014185126A1 (en) | 2013-05-16 | 2014-03-07 | Support roller, method for molding glass plate, method for manufacturing glass plate, and device for manufacturing glass plate |
Publications (2)
| Publication Number | Publication Date |
|---|---|
| CN105143119A true CN105143119A (en) | 2015-12-09 |
| CN105143119B CN105143119B (en) | 2017-06-13 |
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| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN201480021500.1A Active CN105143119B (en) | 2013-05-16 | 2014-03-07 | The manufacture device of backing roll, the forming method of glass plate, the manufacture method of glass plate and glass plate |
Country Status (4)
| Country | Link |
|---|---|
| JP (1) | JP6137306B2 (en) |
| KR (1) | KR102153288B1 (en) |
| CN (1) | CN105143119B (en) |
| WO (1) | WO2014185126A1 (en) |
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| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN105110607B (en) * | 2015-08-28 | 2017-05-24 | 河南省海川电子玻璃有限公司 | Ceramic edge rolling wheel for glass edge roller and preparation method thereof |
Citations (4)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| JPH10212128A (en) * | 1997-01-29 | 1998-08-11 | Asahi Glass Co Ltd | Apparatus for producing float glass |
| CN1558880A (en) * | 2000-04-28 | 2004-12-29 | 新日本制铁株式会社 | Valve body for adjusting flow rate of hot gas and method for preparing the same |
| CN201052995Y (en) * | 2007-06-16 | 2008-04-30 | 金晶(集团)有限公司 | Glass edge-pulling machine head |
| CN102803164A (en) * | 2009-06-19 | 2012-11-28 | 旭硝子株式会社 | Top roller, float glass production device, and float glass production method |
Family Cites Families (5)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| JPS4727649Y1 (en) * | 1969-10-14 | 1972-08-22 | ||
| JPH0222336U (en) * | 1988-07-29 | 1990-02-14 | ||
| JPH08277131A (en) * | 1995-04-05 | 1996-10-22 | Asahi Glass Co Ltd | Edge roll apparatus for producing float glass |
| TW450861B (en) * | 1998-05-13 | 2001-08-21 | Toyo Kohan Co Ltd | Manufacturing method of a combination material of metal foil and ceramic, and metal foil laminated ceramic substrate |
| JP5565062B2 (en) | 2010-04-15 | 2014-08-06 | 旭硝子株式会社 | Float glass manufacturing apparatus and float glass manufacturing method |
-
2014
- 2014-03-07 WO PCT/JP2014/056033 patent/WO2014185126A1/en active Application Filing
- 2014-03-07 CN CN201480021500.1A patent/CN105143119B/en active Active
- 2014-03-07 JP JP2015516964A patent/JP6137306B2/en active Active
- 2014-03-07 KR KR1020157025749A patent/KR102153288B1/en active IP Right Grant
Patent Citations (4)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| JPH10212128A (en) * | 1997-01-29 | 1998-08-11 | Asahi Glass Co Ltd | Apparatus for producing float glass |
| CN1558880A (en) * | 2000-04-28 | 2004-12-29 | 新日本制铁株式会社 | Valve body for adjusting flow rate of hot gas and method for preparing the same |
| CN201052995Y (en) * | 2007-06-16 | 2008-04-30 | 金晶(集团)有限公司 | Glass edge-pulling machine head |
| CN102803164A (en) * | 2009-06-19 | 2012-11-28 | 旭硝子株式会社 | Top roller, float glass production device, and float glass production method |
Also Published As
| Publication number | Publication date |
|---|---|
| KR20160010401A (en) | 2016-01-27 |
| KR102153288B1 (en) | 2020-09-08 |
| JP6137306B2 (en) | 2017-05-31 |
| JPWO2014185126A1 (en) | 2017-02-23 |
| CN105143119B (en) | 2017-06-13 |
| WO2014185126A1 (en) | 2014-11-20 |
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