CN114845961A - Molding device, manufacturing facility provided with same, and method for manufacturing glass plate - Google Patents
Molding device, manufacturing facility provided with same, and method for manufacturing glass plate Download PDFInfo
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- CN114845961A CN114845961A CN202080089382.3A CN202080089382A CN114845961A CN 114845961 A CN114845961 A CN 114845961A CN 202080089382 A CN202080089382 A CN 202080089382A CN 114845961 A CN114845961 A CN 114845961A
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- glass
- plate member
- main body
- manufacturing
- forming
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- 239000011521 glass Substances 0.000 title claims abstract description 113
- 238000004519 manufacturing process Methods 0.000 title claims description 89
- 238000000465 moulding Methods 0.000 title description 19
- 238000000034 method Methods 0.000 title description 10
- 239000000463 material Substances 0.000 claims abstract description 57
- 239000006060 molten glass Substances 0.000 claims abstract description 39
- PXHVJJICTQNCMI-UHFFFAOYSA-N Nickel Chemical compound [Ni] PXHVJJICTQNCMI-UHFFFAOYSA-N 0.000 claims description 21
- VYPSYNLAJGMNEJ-UHFFFAOYSA-N Silicium dioxide Chemical compound O=[Si]=O VYPSYNLAJGMNEJ-UHFFFAOYSA-N 0.000 claims description 19
- CPLXHLVBOLITMK-UHFFFAOYSA-N Magnesium oxide Chemical compound [Mg]=O CPLXHLVBOLITMK-UHFFFAOYSA-N 0.000 claims description 15
- MCMNRKCIXSYSNV-UHFFFAOYSA-N Zirconium dioxide Chemical compound O=[Zr]=O MCMNRKCIXSYSNV-UHFFFAOYSA-N 0.000 claims description 14
- KZHJGOXRZJKJNY-UHFFFAOYSA-N dioxosilane;oxo(oxoalumanyloxy)alumane Chemical compound O=[Si]=O.O=[Si]=O.O=[Al]O[Al]=O.O=[Al]O[Al]=O.O=[Al]O[Al]=O KZHJGOXRZJKJNY-UHFFFAOYSA-N 0.000 claims description 10
- 229910052863 mullite Inorganic materials 0.000 claims description 10
- ZOKXTWBITQBERF-UHFFFAOYSA-N Molybdenum Chemical compound [Mo] ZOKXTWBITQBERF-UHFFFAOYSA-N 0.000 claims description 9
- 229910052750 molybdenum Inorganic materials 0.000 claims description 9
- 239000011733 molybdenum Substances 0.000 claims description 9
- 239000000395 magnesium oxide Substances 0.000 claims description 8
- 229910052814 silicon oxide Inorganic materials 0.000 claims description 8
- OKTJSMMVPCPJKN-UHFFFAOYSA-N Carbon Chemical compound [C] OKTJSMMVPCPJKN-UHFFFAOYSA-N 0.000 claims description 7
- 229910052799 carbon Inorganic materials 0.000 claims description 7
- 229910052759 nickel Inorganic materials 0.000 claims description 7
- 239000010453 quartz Substances 0.000 claims description 7
- HBMJWWWQQXIZIP-UHFFFAOYSA-N silicon carbide Chemical compound [Si+]#[C-] HBMJWWWQQXIZIP-UHFFFAOYSA-N 0.000 claims description 7
- 229910001220 stainless steel Inorganic materials 0.000 claims description 7
- 239000010935 stainless steel Substances 0.000 claims description 7
- 229910052845 zircon Inorganic materials 0.000 claims description 7
- GFQYVLUOOAAOGM-UHFFFAOYSA-N zirconium(iv) silicate Chemical compound [Zr+4].[O-][Si]([O-])([O-])[O-] GFQYVLUOOAAOGM-UHFFFAOYSA-N 0.000 claims description 7
- 230000035939 shock Effects 0.000 description 11
- 239000011248 coating agent Substances 0.000 description 7
- 238000000576 coating method Methods 0.000 description 7
- PNEYBMLMFCGWSK-UHFFFAOYSA-N aluminium oxide Inorganic materials [O-2].[O-2].[O-2].[Al+3].[Al+3] PNEYBMLMFCGWSK-UHFFFAOYSA-N 0.000 description 4
- 238000005520 cutting process Methods 0.000 description 4
- 230000009257 reactivity Effects 0.000 description 4
- 229910044991 metal oxide Inorganic materials 0.000 description 3
- 150000004706 metal oxides Chemical class 0.000 description 3
- 230000008859 change Effects 0.000 description 2
- 238000007796 conventional method Methods 0.000 description 2
- 230000003247 decreasing effect Effects 0.000 description 2
- 238000010586 diagram Methods 0.000 description 2
- 238000009826 distribution Methods 0.000 description 2
- 238000003280 down draw process Methods 0.000 description 2
- 230000000694 effects Effects 0.000 description 2
- 230000004927 fusion Effects 0.000 description 2
- 238000007496 glass forming Methods 0.000 description 2
- 238000012423 maintenance Methods 0.000 description 2
- 230000007246 mechanism Effects 0.000 description 2
- 238000002844 melting Methods 0.000 description 2
- 230000008018 melting Effects 0.000 description 2
- 229910052751 metal Inorganic materials 0.000 description 2
- 239000002184 metal Substances 0.000 description 2
- 230000008569 process Effects 0.000 description 2
- 239000000377 silicon dioxide Substances 0.000 description 2
- 238000010583 slow cooling Methods 0.000 description 2
- 230000004308 accommodation Effects 0.000 description 1
- 230000008901 benefit Effects 0.000 description 1
- 239000011449 brick Substances 0.000 description 1
- 230000008878 coupling Effects 0.000 description 1
- 238000010168 coupling process Methods 0.000 description 1
- 238000005859 coupling reaction Methods 0.000 description 1
- 238000007499 fusion processing Methods 0.000 description 1
- 239000012535 impurity Substances 0.000 description 1
- AXZKOIWUVFPNLO-UHFFFAOYSA-N magnesium;oxygen(2-) Chemical compound [O-2].[Mg+2] AXZKOIWUVFPNLO-UHFFFAOYSA-N 0.000 description 1
- 239000000203 mixture Substances 0.000 description 1
- 230000004048 modification Effects 0.000 description 1
- 238000012986 modification 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
- RVTZCBVAJQQJTK-UHFFFAOYSA-N oxygen(2-);zirconium(4+) Chemical compound [O-2].[O-2].[Zr+4] RVTZCBVAJQQJTK-UHFFFAOYSA-N 0.000 description 1
- 239000002994 raw material Substances 0.000 description 1
- 230000037303 wrinkles Effects 0.000 description 1
- 229910001928 zirconium oxide Inorganic materials 0.000 description 1
Images
Classifications
-
- C—CHEMISTRY; METALLURGY
- C03—GLASS; MINERAL OR SLAG WOOL
- C03B—MANUFACTURE, SHAPING, OR SUPPLEMENTARY PROCESSES
- C03B17/00—Forming molten glass by flowing-out, pushing-out, extruding or drawing downwardly or laterally from forming slits or by overflowing over lips
- C03B17/06—Forming glass sheets
Landscapes
- Chemical & Material Sciences (AREA)
- Engineering & Computer Science (AREA)
- Materials Engineering (AREA)
- Organic Chemistry (AREA)
- Re-Forming, After-Treatment, Cutting And Transporting Of Glass Products (AREA)
Abstract
A forming apparatus for forming a glass ribbon by forming molten glass, the forming apparatus comprising a main body and a plate member provided at least in a portion of the main body which comes into contact with the glass, wherein the plate member has a thickness in a range of 0.5mm to 100mm, and the plate member is made of a material inert to the glass.
Description
Technical Field
The present invention relates to a forming device for a glass plate manufacturing apparatus, a manufacturing apparatus provided with the forming device, and a glass plate manufacturing method.
Background
The glass sheet can be continuously produced by a method such as a Fusion (Fusion) method or a Slit down draw (Slit draw) method.
For example, in the melting method, molten glass obtained by melting a glass raw material is supplied to an upper portion of a forming apparatus (hereinafter, referred to as "forming apparatus"). The forming apparatus has a substantially wedge shape with a downwardly pointed cross section, and the molten glass flows down along two opposite side surfaces of the forming apparatus. The molten glass flowing down along the both side surfaces merges at a lower end portion (also referred to as a "merging point") of the forming apparatus and is integrated, and the glass ribbon is formed. Thereafter, the glass ribbon is drawn downward while being gradually cooled by a drawing means such as a roller, and is cut into a predetermined size (for example, patent document 1).
In the slit down-draw method, a forming apparatus that houses molten glass has a slit-shaped opening at the bottom. The molten glass flows down through the opening and becomes a glass ribbon. Thereafter, the glass ribbon is slowly cooled and thereafter cut, whereby a glass sheet is manufactured.
Patent document 1: japanese patent laid-open publication No. 2016-028005
In the manufacturing facility for manufacturing a glass sheet by the above-described method or another method, a structure capable of withstanding rapid temperature rise and temperature fall is desired for a forming apparatus from the viewpoint of improving the manufacturing efficiency of the glass sheet or the like. However, for this reason, a material having a strong thermal shock is required as the forming means.
However, in general, a material having such thermal shock resistance is often highly reactive with glass, and has a problem that it is difficult to use the material as a material for a molding apparatus. Therefore, in the conventional forming apparatus, the temperature increase rate and the temperature decrease rate cannot be increased in most cases, and therefore, there is a problem that it is difficult to improve the production efficiency of the glass sheet.
Disclosure of Invention
The present invention has been made in view of such a background, and an object of the present invention is to provide a forming apparatus for a glass sheet manufacturing facility, which can rapidly raise and lower the temperature compared to the conventional one. Further, the present invention aims to provide a glass sheet manufacturing facility provided with such a forming apparatus. Further, the present invention aims to provide a method for producing a glass sheet, which can raise and lower the temperature more rapidly than conventional methods.
In the present invention, there is provided a forming apparatus for forming a glass ribbon by forming molten glass, comprising:
a main body, and
a plate member provided at least in a portion of the main body which is in contact with the glass,
the thickness of the plate member is in the range of 0.5mm to 100mm, and the plate member is made of a material inert to the glass.
Further, in the present invention, there is provided a manufacturing apparatus for continuously manufacturing a glass sheet, characterized in that,
comprises a forming device for forming molten glass into a glass ribbon,
the molding apparatus includes:
a main body, and
a plate member provided at least in a portion of the main body which is in contact with the glass,
the thickness of the plate member is in the range of 0.5mm to 100mm, and the plate member is made of a material inert to the glass.
Further, the present invention provides a method for producing a glass plate, characterized in that,
comprising the step of forming a glass ribbon from molten glass using a forming device,
the molding apparatus includes:
a main body, and
a plate member provided at least in a portion of the main body which is in contact with the glass,
the thickness of the plate member is in the range of 0.5mm to 100mm, and the plate member is made of a material inert to the glass.
The present invention can provide a forming apparatus for a glass sheet manufacturing facility, which can raise and lower the temperature more rapidly than before. Further, the present invention can provide a glass sheet manufacturing apparatus provided with such a forming device. Further, the present invention can provide a method for producing a glass plate, which can raise and lower the temperature more rapidly than conventional methods.
Drawings
Fig. 1 is a diagram schematically showing a configuration example of a glass plate manufacturing apparatus according to an embodiment of the present invention.
FIG. 2 is a sectional view schematically showing a section along the line A-A of the apparatus for producing a glass sheet shown in FIG. 1.
Fig. 3 is a diagram schematically showing an example of the configuration of an apparatus for producing a glass sheet according to another embodiment of the present invention.
Detailed Description
Hereinafter, an embodiment of the present invention will be described with reference to the drawings.
(apparatus for manufacturing glass plate according to one embodiment of the present invention)
An apparatus for manufacturing a glass sheet according to an embodiment of the present invention will be described with reference to fig. 1 and 2.
Fig. 1 and 2 schematically show a configuration of a glass plate manufacturing facility (hereinafter, referred to as "first manufacturing facility") 100 according to an embodiment of the present invention. In the first manufacturing apparatus 100, a glass sheet can be continuously manufactured by a fusion process.
Further, fig. 2 is a view schematically showing a cross section along the line a-a of the first manufacturing apparatus 100 in fig. 1.
As shown in fig. 1 and 2, the first manufacturing apparatus 100 includes: a forming apparatus 110, a furnace 150 for housing the forming apparatus 110, and a plurality of rollers 160 disposed below the forming apparatus 110. Further, although not shown, the first manufacturing facility 100 further includes a cutting member below the furnace 150.
The forming apparatus 110 has a function of forming the glass ribbon GR from the molten glass MG. The forming apparatus 110 is connected to the supply pipe 105, and the molten glass MG is supplied to the forming apparatus 110 through the supply pipe 105.
The forming device 110 has a body 120 and a plate member 130.
The main body 120 of the molding device 110 has a substantially wedge-like cross-sectional shape as shown in fig. 2. More specifically, the main body 120 has: the recess 122 provided in the upper surface 121 of the main body 120, the first side surface 124a and the second side surface 124b facing each other, and the lower end portion 129 serving as an intersection of the first side surface 124a and the second side surface 124 b.
The recess 122 is formed along the longitudinal direction of the body 120, i.e., the X direction in fig. 1 and 2.
The first side 124a has a first upper side 126a and a first lower side 128 a. Likewise, the second side 124b has a second upper side 126b and a second lower side 128 b.
The first upper side surface 126a and the second upper side surface 126b extend in the substantially longitudinal direction (X direction) and the substantially vertical direction (Z direction) of the main body 120, and are therefore arranged substantially parallel to the XZ plane. On the other hand, the first lower surface 128a and the second lower surface 128b are arranged to be inclined with respect to the vertical direction (Z direction), and intersect each other at a lower end 129 of the main body 120.
An upper portion of the first lower side 128a is connected to a lower portion of the first upper side 126a, and an upper portion of the second lower side 128b is connected to a lower portion of the second upper side 126 b.
Further, the plate member 130 of the forming device 110 is provided at least at a portion directly contacting the glass on the exposed surface of the main body 120.
For example, in the example shown in fig. 2, the plate member 130 is provided so as to cover the upper surface 121, the recess 122, the first side surface 124a (the first upper side surface 126a and the first lower side surface 128a), and the second side surface 124b (the second upper side surface 126b and the second lower side surface 128b) of the main body 120.
Further, the forming device 110 has a shape that substantially conforms to the shape of the body 120. That is, the forming device 110 has an upper surface 111, a concave portion 112, a first side surface 114a (a first upper side surface 116a and a first lower side surface 118a), a second side surface 114b (a second upper side surface 116b and a second lower side surface 118b), and a lower end portion 119, which have similar shapes to the corresponding portions of the main body 120. These portions are formed by the exposed surfaces of the plate members 130.
Each of the rollers 160 has a function of conveying the glass ribbon GR downward while adjusting the thickness of the glass ribbon GR.
When a glass sheet is produced using the first production facility 100, first, molten glass MG is supplied to the forming device 110 via the supply pipe 105.
The molten glass MG supplied to the forming device 110 is accommodated in the recess 112. However, when the molten glass MG exceeding the accommodation volume of the recess 112 is supplied, the molten glass MG overflows along the first side surface 114a and the second side surface 114b of the forming device 110 and flows downward.
Thereby, a first molten glass portion 190a is formed on the first upper side 116a of the forming device 110, and a second molten glass portion 190b is formed on the second upper side 116b of the forming device 110.
Thereafter, the first molten glass portion 190a flows out further downward along the first lower surface 118a of the forming device 110. Similarly, the second molten glass portion 190b flows further downward along the second lower side 118b of the forming device 110.
As a result, the first molten glass portion 190a and the second molten glass portion 190b reach the lower end 119 of the forming device 110, and are integrated therein. Thereby, the glass ribbon GR is formed.
Thereafter, the glass ribbon GR is further pulled downward in the vertical direction by the roller 160, and slow cooling is performed in this process.
Thereafter, the glass ribbon GR that has been sufficiently gradually cooled is discharged from the furnace 150 and cut into a predetermined size by a cutting mechanism (not shown).
Through the above steps, a glass sheet can be continuously produced.
Here, from the viewpoint of improving the efficiency of producing glass sheets, etc., a structure capable of withstanding rapid temperature rise and temperature fall is desired for a forming apparatus included in a glass sheet production facility.
However, in the conventional manufacturing facility, the main part of the molding apparatus is often made of a material such as a heat-resistant brick, and if rapid temperature rise and temperature fall are performed, the main body may be damaged by thermal shock. Therefore, the conventional manufacturing equipment has a problem that the temperature increase rate and the temperature decrease rate cannot be increased almost at all. Here, the damage by the thermal shock includes either or both of brittle fracture in which the material is cracked due to a temperature distribution generated by a rapid temperature change, and ductile deformation in which the material is deformed due to a large temperature distribution generated by a rapid temperature change.
In order to cope with such a problem, it is conceivable to use a material having strong thermal shock as a material of the main body. However, a material having good thermal shock resistance generally has high reactivity with glass, and is difficult to use as a main body of a molding apparatus.
In contrast, in the first manufacturing apparatus 100, the main portion of the forming device 110 has the main body 120 and the plate member 130 having a thickness in the range of 0.5mm to 100 mm. The plate member 130 is made of a material inert to the molten glass MG, and is provided at a position of the main body 120 in contact with the molten glass MG.
In the first manufacturing apparatus 100 having such a feature, since the main body 120 is protected by the plate member 130, the possibility that the main body 120 of the forming device 110 comes into contact with the molten glass MG can be intentionally suppressed at the time of manufacturing a glass sheet. Therefore, the material having thermal shock resistance can be selected for the body 120.
In addition, the plate member 130 of the forming apparatus 110 has a thickness in the range of 0.5mm to 100mm, and thus has a characteristic of being not easily broken even if it receives thermal shock.
In the first manufacturing apparatus 100, the plate member 130 is applied as a "plate" to the main body 120, unlike a coating film such as a coating film.
Generally, a coating film is provided on an object to be set in close contact with the object to be set. Therefore, when a coating film is provided on the main body of the molding apparatus, when the molding apparatus is subjected to a load of rapid temperature rise and temperature fall, the coating film may peel off from the main body, wrinkle, or crack due to a difference in thermal expansion between the main body and the coating film.
However, in the plate member 130 provided as a plate on the main body 120, strict adhesion is not required between the main body 120 and the plate member 130. Therefore, even when the plate member 130 is used, a problem due to a difference in thermal expansion between the plate member and the main body 120 is less likely to occur.
According to the above-described effects, the temperature of the molding device 110 can be rapidly increased and decreased in the first manufacturing facility 100. In addition, in this way, in the first manufacturing apparatus 100, the glass sheet can be manufactured more efficiently.
In addition, in the forming apparatus 110, the plate member 130 is easily removed from the main body 120. Therefore, when the glass sheet to be manufactured is changed to another glass sheet having higher reactivity with respect to the sheet member 130, the forming apparatus 110 of the present invention may simply replace the sheet member 130 with a sheet member 130 made of another material. Therefore, the glass sheet can be more efficiently produced in the forming apparatus 110.
In addition, in the conventional forming apparatus, when the forming apparatus is corroded or deteriorated in the production of the glass sheet, it is necessary to replace the entire forming apparatus, and therefore, it takes time and cost. However, in the forming apparatus 110, since the plate member 130 is easily detached from the body 120, when the plate member 130 is corroded or deteriorated in the manufacture of a glass plate, only the plate member 130 may be replaced. Therefore, the forming apparatus 110 can efficiently and inexpensively perform maintenance and management of the facility in manufacturing the glass sheet.
(Components constituting the Molding apparatus)
Next, each component constituting the forming device 110 in the first manufacturing apparatus 100 will be described in more detail.
(Main body 120)
The body 120 is made of a material having a strong thermal shock.
Specifically, the main body 120 has a thermal conductivity κ (W/mK) and a thermal expansion coefficient ρ (10) at room temperature -6 K), the ratio κ/ρ is 1 or more.
Such materials have the following characteristics: even if the temperature is rapidly raised from room temperature to the glass forming temperature (for example, 500 to 1500 ℃), or the temperature is rapidly lowered from the glass forming temperature to room temperature, damage is less likely to occur.
Examples of the material having the ratio κ/ρ of 1 or more include carbon (C) having a ratio κ/ρ of 23.5, silicon carbide (SiC) having a ratio κ/ρ of 60.0, a silicon oxide sintered body having a ratio κ/ρ of 2.7, nickel (Ni) having a ratio κ/ρ of 7.3, molybdenum (Mo) having a ratio κ/ρ of 28.8, stainless steel having a ratio κ/ρ of 1.2, an alumina sintered body having a ratio κ/ρ of 4.4, and a mullite sintered body having a ratio κ/ρ of 1.2. The silica sintered body may contain a component other than silica in an amount of usually 0.2 to 5 wt% based on the whole sintered body. The alumina sintered body may contain a component other than alumina in an amount of usually 0.2 to 10 wt% based on the whole amount of the sintered body. The mullite sintered body may contain a component other than mullite in an amount of usually 0.5 to 5 wt% based on the entire sintered body.
(plate member 130)
The plate member 130 is made of a material inert with respect to the glass to be used. Examples of the material for the plate member 130 include metal oxides such as silicon oxide, zirconium oxide, aluminum oxide, and magnesium oxide. These metal oxides may be composed of only 1 kind, but may be composed of 2 or more kinds. The metal constituting the metal oxide may contain 2 or more kinds of complex oxides. Further, a metal such as molybdenum may be contained. Specifically, the material may be one or more materials selected from the group consisting of quartz, zirconia, mullite, zircon, magnesia, alumina, and molybdenum. The material constituting the plate member 130 preferably contains impurities in an amount of 1 wt% or less based on the total amount of the material.
Depending on the composition of the glass used, the material inert to glass will vary. Therefore, as a material constituting the plate member 130, a material having a low reactivity with respect to the glass used, that is, an inert material is appropriately selected.
As described above, the thickness of the plate member 130 is in the range of 0.5mm to 100 mm. The thickness is preferably in the range of 0.75mm to 50mm, more preferably in the range of 1mm to 30 mm.
Further, the plate member 130 may be configured by combining a plurality of plate-like members having substantially the same shape or different shapes. For example, the plate member 130 may be configured by a plurality of members for attaching the plate member 130 to a desired surface of the main body 120. Alternatively, the plate member 130 may be configured by disposing a plurality of members for the plate member 130 on a desired surface of the main body 120 and then coupling these members to each other.
(apparatus for manufacturing other glass plate according to one embodiment of the present invention)
Next, a manufacturing apparatus of a glass plate according to another embodiment of the present invention will be described with reference to fig. 3.
Fig. 3 schematically shows one configuration example of a glass plate manufacturing apparatus (hereinafter, referred to as "second manufacturing apparatus") 200 according to another embodiment of the present invention. In the second manufacturing apparatus 200, a glass sheet can be continuously manufactured by the slot down-draw method.
As shown in fig. 3, the second manufacturing apparatus 200 includes: a forming apparatus 210, a furnace 250 for housing the forming apparatus 210, and a plurality of rollers 260 disposed below the forming apparatus 210. Further, although not shown, the second manufacturing facility 200 further includes a cutting member below the furnace 250.
The forming apparatus 210 has a function of forming the glass ribbon GR from the molten glass MG. The forming device 210 is connected to a supply pipe (not shown), and the molten glass MG is supplied to the forming device 210 through the supply pipe.
The forming device 210 has a main body 220 and a plate member 230.
The main body 220 of the molding device 210 has a "box-like" cross-sectional shape as shown in fig. 3. More specifically, the main body 220 has an inner side 221, an inner bottom 225, an outer bottom 227, and a slit 229. The slit 229 penetrates from the inner bottom surface 225 to the outer bottom surface 227.
The plate member 230 of the forming apparatus 210 is provided at least at a portion directly contacting the glass on the exposed surface of the main body 220.
For example, in the example shown in fig. 3, the plate member 230 is provided so as to cover the inner side surface 221, the inner bottom surface 225, and the slit 229 of the main body 220.
The forming device 210 has a shape that generally conforms to the shape of the body 220. For example, forming device 210 has an interior side 211, an interior bottom 215, and a slot 219, each of which has a shape similar to corresponding respective portions of body 220. These portions are formed by the exposed surfaces of the plate members 230.
In addition, although not shown in fig. 3, the members of the forming device 210 extend in a direction perpendicular to the paper surface. Therefore, the forming device 210 shown in fig. 3 has an elongated shape along the longitudinal direction (X direction).
Each roller 260 has a function of conveying the glass ribbon GR downward while adjusting the thickness of the glass ribbon GR discharged from the forming apparatus 210.
When a glass sheet is manufactured using such a second manufacturing facility 200, first, molten glass MG is supplied to the forming device 210 via a supply pipe (not shown).
The molten glass MG supplied to the forming apparatus 210 is first contained in an interior defined by an inner side surface 211 and an inner bottom surface 215.
Next, the molten glass MG flows out downward through the slit 219 of the forming device 210, and is cooled down in the middle thereof. Thereby, the glass ribbon GR is formed.
Thereafter, the glass ribbon GR is further pulled downward in the vertical direction by the rollers 260, and slow cooling is performed in the process.
Thereafter, the glass ribbon GR that has been sufficiently gradually cooled is discharged from the furnace 250 and cut into a predetermined size by a cutting mechanism (not shown).
In the second manufacturing apparatus 200, the glass sheet can be continuously manufactured through the above steps.
Here, in the second manufacturing apparatus 200, the main portion of the forming device 210 has a main body 220 and a plate member 230 having a thickness in the range of 0.5mm to 100 mm. The plate member 230 is made of a material inert to the molten glass MG, and is provided at a position of the main body 220 contacting the glass.
In the second manufacturing apparatus 200 having such a feature, since the main body 220 is protected by the plate member 230, the possibility that the main body 220 of the forming device 210 comes into contact with glass can be intentionally suppressed at the time of manufacturing the glass sheet. Therefore, the material of the body 220 can be selected to have thermal shock resistance.
In addition, the plate member 230 of the forming apparatus 210 has a thickness in the range of 0.5mm to 100mm, and thus has a characteristic of being hard to be broken even if a thermal shock is received.
In the second manufacturing apparatus 200, the plate member 230 is applied as a "plate" to the main body 220, unlike a film such as a coating film. Therefore, a problem due to a difference in thermal expansion between the plate member 230 and the main body 220 is also less likely to occur.
According to the above-described effects, the temperature of the second manufacturing facility 200 can be rapidly increased and decreased with respect to the molding device 210. In addition, thereby, in the second manufacturing apparatus 200, the glass sheet can be manufactured more efficiently.
In addition, in the molding device 210, the plate member 230 is easily removed from the main body 220. Therefore, when the glass plate to be manufactured is changed to another glass plate having high reactivity with respect to the plate member 230, the forming apparatus 210 may replace the plate member 230 with a plate member 230 made of another material. Thus, the forming device 210 can more efficiently manufacture the glass sheet.
In addition, in the conventional forming apparatus, when the forming apparatus is corroded or deteriorated in the production of the glass sheet, the entire forming apparatus needs to be replaced, which takes a lot of time and cost. However, in the forming apparatus 210, since the plate member 230 is easily detached from the main body 220, when the plate member 230 is corroded or deteriorated in the manufacture of a glass plate, only the plate member 230 may be replaced. Therefore, the forming apparatus 210 can efficiently and inexpensively perform maintenance and management of the equipment at the time of manufacturing the glass sheet.
The main body 220 and the plate member 230 of the molding apparatus 210 can be referred to the descriptions of the main body 120 and the plate member 130 of the molding apparatus 110. Therefore, it is not further described here.
The configuration and features of the embodiment of the present invention have been described above with reference to the molding device 110 of the first manufacturing facility 100 and the molding device 210 of the second manufacturing facility 200.
However, these are merely examples, and the apparatus for manufacturing a glass sheet and the forming device of the present invention may have other configurations, as will be apparent to those skilled in the art having the benefit of this disclosure.
The present application claims priority from japanese patent application No. 2019-238256, which was filed on 27.12.2019, the entire contents of which are incorporated herein by reference.
Description of the reference numerals
100 … a first manufacturing facility; 105 … supply tube; 110 … forming device; 111 … the upper surface of the forming device; 112 … forming a recess of the device; 114a … a first side of a forming device; 114b … forming a second side of the device; 116a … a first upper side of the forming device; 116b … a second upper side of the forming device; 118a … forming a first lower side of the device; 118b … form a second, lower side of the device; 119 … lower end of the former; 120 … a body; 121 … upper surface of the body; 122 … a recess of the body; 124a …; 124b … on a second side of the body; 126a … on a first upper side of the body; 126b … on a second upper side of the body; 128a … a first lower side of the body; 128b … on a second, lower side of the body; the lower end of the 129 … body; 130 … a plate member; 150 … furnace; 160 … rollers; 190a … first molten glass portion; 190b … second molten glass portion; 200 … second manufacturing equipment; 210 … forming means; 211 … inner side of forming device; 215 … the inner bottom surface of the forming device; 219 … slits of the former; 220 … a main body; the inner side of the body 221 …; 225 … an interior bottom surface of the body; 227 … the outer bottom surface of the body; 229 … slits in the body; 230 … a plate member; a 250 … furnace; 260 … roller; GR … glass ribbon; MG … molten glass.
The claims (modification according to treaty clause 19)
1. A forming apparatus for forming a glass ribbon by forming molten glass,
the forming apparatus is characterized by comprising:
a main body, and
a plate member provided at least in a portion of the main body which is in contact with the glass,
the plate member has a thickness in the range of 0.5mm to 100mm, and is made of a material inert to the glass.
(modified) the forming apparatus according to claim 1,
the thermal conductivity of the body at room temperature is represented by k (W/mK), and the thermal expansion coefficient is represented by ρ (10) -6 K), the body is made of a material having a kappa/rho ratio of 1 or more.
3. Forming device according to claim 1 or 2,
the body is made of one or more materials selected from the group consisting of carbon (C), silicon carbide (SiC), a silicon oxide sintered body, nickel (Ni), molybdenum (Mo), and stainless steel.
4. A forming apparatus according to any one of claims 1 to 3,
the plate member is made of one or more materials selected from the group consisting of quartz, zirconia, mullite, zircon and magnesia.
5. A manufacturing apparatus which continuously manufactures glass sheets,
the manufacturing apparatus is characterized in that it is provided with,
comprises a forming device for forming molten glass into a glass ribbon,
the forming device comprises:
a main body, and
a plate member provided at least in a portion of the main body which is in contact with the glass,
the plate member has a thickness in the range of 0.5mm to 100mm, and is made of a material inert to the glass.
(as modified) the manufacturing apparatus according to claim 5,
the thermal conductivity of the body at room temperature is represented by k (W/mK), and the thermal expansion coefficient is represented by ρ (10) -6 K), the body is made of a material having a kappa/rho ratio of 1 or more.
7. The manufacturing apparatus according to claim 5 or 6,
the body is made of one or more materials selected from the group consisting of carbon (C), silicon carbide (SiC), a silicon oxide sintered body, nickel (Ni), molybdenum (Mo), and stainless steel.
8. The manufacturing apparatus according to any one of claims 5 to 7,
the plate member is made of one or more materials selected from the group consisting of quartz, zirconia, mullite, zircon and magnesia.
9. A method for producing a glass plate,
the manufacturing method is characterized in that the manufacturing method comprises the following steps,
comprising the step of forming a glass ribbon from molten glass using a forming device,
the forming device comprises:
a main body, and
a plate member provided at least in a portion of the main body which is in contact with the glass,
the plate member has a thickness in the range of 0.5mm to 100mm, and is made of a material inert to the glass.
(modified) the manufacturing method according to claim 9,
the thermal conductivity of the body at room temperature is represented by k (W/mK), and the thermal expansion coefficient is represented by ρ (10) -6 K), the body is made of a material having a kappa/rho ratio of 1 or more.
11. The manufacturing method according to claim 9 or 10,
the body is made of one or more materials selected from the group consisting of carbon (C), silicon carbide (SiC), a silicon oxide sintered body, nickel (Ni), molybdenum (Mo), and stainless steel.
12. The production method according to any one of claims 9 to 11,
the plate member is made of one or more materials selected from the group consisting of quartz, zirconia, mullite, zircon and magnesia.
Claims (12)
1. A forming apparatus for forming a glass ribbon by forming molten glass,
the forming apparatus is characterized by comprising:
a main body, and
a plate member provided at least in a portion of the main body which is in contact with the glass,
the plate member has a thickness in the range of 0.5mm to 100mm, and is made of a material inert to the glass.
2. The forming apparatus according to claim 1,
the thermal conductivity of the body at room temperature is represented by k (W/mK), and the thermal expansion coefficient is represented by ρ (10) -6 K) In this case, the main body is made of a material having a kappa/rho ratio of 1 or more.
3. Forming device according to claim 1 or 2,
the body is made of one or more materials selected from the group consisting of carbon (C), silicon carbide (SiC), a silicon oxide sintered body, nickel (Ni), molybdenum (Mo), and stainless steel.
4. A forming apparatus according to any one of claims 1 to 3,
the plate member is made of one or more materials selected from the group consisting of quartz, zirconia, mullite, zircon and magnesia.
5. A manufacturing apparatus which continuously manufactures glass sheets,
the manufacturing apparatus is characterized in that it is provided with,
comprises a forming device for forming molten glass into a glass ribbon,
the forming device comprises:
a main body, and
a plate member provided at least in a portion of the main body which is in contact with the glass,
the plate member has a thickness in the range of 0.5mm to 100mm, and is made of a material inert to the glass.
6. The manufacturing apparatus according to claim 5,
the thermal conductivity of the body at room temperature is represented by k (W/mK), and the thermal expansion coefficient is represented by ρ (10) -6 K) In this case, the main body is made of a material having a kappa/rho ratio of 1 or more.
7. The manufacturing apparatus according to claim 5 or 6,
the body is made of one or more materials selected from the group consisting of carbon (C), silicon carbide (SiC), a silicon oxide sintered body, nickel (Ni), molybdenum (Mo), and stainless steel.
8. The manufacturing apparatus according to any one of claims 5 to 7,
the plate member is made of one or more materials selected from the group consisting of quartz, zirconia, mullite, zircon and magnesia.
9. A method for producing a glass plate,
the manufacturing method is characterized in that the manufacturing method comprises the following steps,
comprising the step of forming a glass ribbon from molten glass using a forming device,
the forming device comprises:
a main body, and
a plate member provided at least in a portion of the main body which is in contact with the glass,
the plate member has a thickness in the range of 0.5mm to 100mm, and is made of a material inert to the glass.
10. The manufacturing method according to claim 9,
the thermal conductivity of the body at room temperature is represented by k (W/mK), and the thermal expansion coefficient is represented by ρ (10) -6 K) In this case, the main body is made of a material having a kappa/rho ratio of 1 or more.
11. The manufacturing method according to claim 9 or 10,
the body is made of one or more materials selected from the group consisting of carbon (C), silicon carbide (SiC), a silicon oxide sintered body, nickel (Ni), molybdenum (Mo), and stainless steel.
12. The production method according to any one of claims 9 to 11,
the plate member is made of one or more materials selected from the group consisting of quartz, zirconia, mullite, zircon and magnesia.
Applications Claiming Priority (3)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| JP2019-238256 | 2019-12-27 | ||
| JP2019238256 | 2019-12-27 | ||
| PCT/JP2020/047660 WO2021132150A1 (en) | 2019-12-27 | 2020-12-21 | Molding device, production facility equipped with said molding device, and method for producing glass plate |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN114845961A true CN114845961A (en) | 2022-08-02 |
Family
ID=76574171
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN202080089382.3A Pending CN114845961A (en) | 2019-12-27 | 2020-12-21 | Molding device, manufacturing facility provided with same, and method for manufacturing glass plate |
Country Status (4)
| Country | Link |
|---|---|
| JP (1) | JPWO2021132150A1 (en) |
| CN (1) | CN114845961A (en) |
| TW (1) | TW202134193A (en) |
| WO (1) | WO2021132150A1 (en) |
Citations (3)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| JP2014205581A (en) * | 2013-04-10 | 2014-10-30 | ＡｖａｎＳｔｒａｔｅ株式会社 | Method and apparatus for producing glass substrate |
| JP2015048278A (en) * | 2013-09-02 | 2015-03-16 | 日本電気硝子株式会社 | Sheet glass molding, production method of sheet glass molding, production device of sheet glass, and production method of sheet glass |
| WO2019093080A1 (en) * | 2017-11-08 | 2019-05-16 | 日本電気硝子株式会社 | Production method for glass article and production device therefor |
Family Cites Families (5)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| JP4507148B2 (en) * | 2000-10-24 | 2010-07-21 | 株式会社ニッカトー | Heat treatment member made of mullite sintered body |
| JP2007197303A (en) * | 2005-09-29 | 2007-08-09 | Nippon Electric Glass Co Ltd | Method for forming refractory molded product for being mounted in plate glass molding apparatus and refractory molded product, and method for molding plate glass and plate glass |
| JP2009132595A (en) * | 2007-10-29 | 2009-06-18 | Nippon Electric Glass Co Ltd | Refractory material for glass production, method for producing the same, glass melting furnace, and method for producing glass article |
| RU2656647C1 (en) * | 2011-04-13 | 2018-06-06 | Сэнт-Гобэн Керамикс Энд Пластикс, Инк. | Refractory product containing beta-alumina |
| US10047000B2 (en) * | 2014-01-15 | 2018-08-14 | Corning Incorporated | Method of making glass sheets with vehicle pretreatment of refractory |
-
2020
- 2020-12-21 WO PCT/JP2020/047660 patent/WO2021132150A1/en active Application Filing
- 2020-12-21 CN CN202080089382.3A patent/CN114845961A/en active Pending
- 2020-12-21 JP JP2021567436A patent/JPWO2021132150A1/ja active Pending
- 2020-12-24 TW TW109145979A patent/TW202134193A/en unknown
Patent Citations (3)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| JP2014205581A (en) * | 2013-04-10 | 2014-10-30 | ＡｖａｎＳｔｒａｔｅ株式会社 | Method and apparatus for producing glass substrate |
| JP2015048278A (en) * | 2013-09-02 | 2015-03-16 | 日本電気硝子株式会社 | Sheet glass molding, production method of sheet glass molding, production device of sheet glass, and production method of sheet glass |
| WO2019093080A1 (en) * | 2017-11-08 | 2019-05-16 | 日本電気硝子株式会社 | Production method for glass article and production device therefor |
Also Published As
| Publication number | Publication date |
|---|---|
| JPWO2021132150A1 (en) | 2021-07-01 |
| TW202134193A (en) | 2021-09-16 |
| WO2021132150A1 (en) | 2021-07-01 |
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