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CN203173971U - Glass plate manufacturing device - Google Patents

Glass plate manufacturing device Download PDF

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Publication number
CN203173971U
CN203173971U CN2011900005560U CN201190000556U CN203173971U CN 203173971 U CN203173971 U CN 203173971U CN 2011900005560 U CN2011900005560 U CN 2011900005560U CN 201190000556 U CN201190000556 U CN 201190000556U CN 203173971 U CN203173971 U CN 203173971U
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CN
China
Prior art keywords
cooling
mentioned
plate
sheet glass
adjusted
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CN2011900005560U
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Chinese (zh)
Inventor
前田伸广
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Avanstrate Inc
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Avanstrate Inc
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    • CCHEMISTRY; METALLURGY
    • C03GLASS; MINERAL OR SLAG WOOL
    • C03BMANUFACTURE, SHAPING, OR SUPPLEMENTARY PROCESSES
    • C03B17/00Forming molten glass by flowing-out, pushing-out, extruding or drawing downwardly or laterally from forming slits or by overflowing over lips
    • C03B17/06Forming glass sheets
    • CCHEMISTRY; METALLURGY
    • C03GLASS; MINERAL OR SLAG WOOL
    • C03BMANUFACTURE, SHAPING, OR SUPPLEMENTARY PROCESSES
    • C03B17/00Forming molten glass by flowing-out, pushing-out, extruding or drawing downwardly or laterally from forming slits or by overflowing over lips
    • C03B17/06Forming glass sheets
    • C03B17/067Forming glass sheets combined with thermal conditioning of the sheets
    • CCHEMISTRY; METALLURGY
    • C03GLASS; MINERAL OR SLAG WOOL
    • C03BMANUFACTURE, SHAPING, OR SUPPLEMENTARY PROCESSES
    • C03B18/00Shaping glass in contact with the surface of a liquid
    • C03B18/02Forming sheets
    • CCHEMISTRY; METALLURGY
    • C03GLASS; MINERAL OR SLAG WOOL
    • C03BMANUFACTURE, SHAPING, OR SUPPLEMENTARY PROCESSES
    • C03B18/00Shaping glass in contact with the surface of a liquid
    • C03B18/02Forming sheets
    • C03B18/18Controlling or regulating the temperature of the float bath; Composition or purification of the float bath
    • YGENERAL TAGGING OF NEW TECHNOLOGICAL DEVELOPMENTS; GENERAL TAGGING OF CROSS-SECTIONAL TECHNOLOGIES SPANNING OVER SEVERAL SECTIONS OF THE IPC; TECHNICAL SUBJECTS COVERED BY FORMER USPC CROSS-REFERENCE ART COLLECTIONS [XRACs] AND DIGESTS
    • Y02TECHNOLOGIES OR APPLICATIONS FOR MITIGATION OR ADAPTATION AGAINST CLIMATE CHANGE
    • Y02PCLIMATE CHANGE MITIGATION TECHNOLOGIES IN THE PRODUCTION OR PROCESSING OF GOODS
    • Y02P40/00Technologies relating to the processing of minerals
    • Y02P40/50Glass production, e.g. reusing waste heat during processing or shaping
    • Y02P40/57Improving the yield, e-g- reduction of reject rates

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  • 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 glass plate manufacturing device provided by the utility model is the glass plate manufacturing device which enables molten glass (90) overflowing from a shaped body to flow along the two side surfaces of the shaped body (10) and then converge close to the lower end part of the shaped body for manufacturing a glass plate (91), and can adjust the cooling speed of the glass plate. The glass plate manufacturing device comprises a plurality of cooling adjusting plates and temperature control units, wherein the plurality of cooling adjusting plates are configured in parallel at the positions lower than the converging point of the molten glass in the flowing direction of the molten glass, and are used for adjusting the cooling speed of the glass plate; and the temperature control units are arranged corresponding to the cooling adjusting plates, and are used for controlling the temperature of the cooling adjusting plates.

Description

The sheet glass manufacturing installation
Technical field
The utility model relates to a kind of sheet glass manufacturing installation.
Background technology
Before, adopt as one of manufacture method of sheet glass scorification is arranged.Scorification is to make the melten glass that flows in the molding make sheet glass from the molding overflow.,, break away from and become sheet glass from molding thereafter at the interflow, bottom of molding in after molding flows down from the melten glass of molding overflow.Sheet glass cools off by the environment in the stove, changes to Hookean region through the viscoelasticity zone from the stickiness zone.Herein, the situation of being cooled off unevenly because of the convection current that in stove, produces for the scope of the sheet glass that prevents to cool off equably in the viscoelasticity zone of glass, patent documentation 1(Japanese kokai publication hei 2-225326 communique for example) shown in, proposes to have the technology that tabular component is set in the both sides of sheet glass.
The utility model content
[utility model problem to be solved]
Follow the increase in demand of glass substrate in recent years, need to improve the turnout of sheet glass.Yet, when adopting the situation of previous technology, be difficult to fully control the speed of cooling of sheet glass, so can't fully expect the raising of turnout.
Therefore, problem of the present utility model is to provide a kind of sheet glass manufacturing installation that can adjust the speed of cooling of sheet glass.
[technique means of dealing with problems]
Sheet glass manufacturing installation of the present utility model is in making from the melten glass of molding overflow after the two sides along molding flow down, near the interflow bottom of molding and make the sheet glass person, and it possesses a plurality of coolings and adjusts plates, and temperature control unit.A plurality of coolings are adjusted plate in locating more on the lower to dispose side by side along the flow direction of melten glass than the junction of two streams of melten glass, and the speed of cooling of sheet glass is adjusted.It is corresponding and arrange that plate is adjusted in temperature control unit and each cooling, and temperature of each cooling adjustment plate is controlled.
Cooling arranged side by side is adjusted plate by adjusting the corresponding temperature control unit of plate and be subjected to temperature control respectively with each cooling on the flow direction of melten glass.Cooling is adjusted plate and is controlled in the mode of the temperature homogeneity that keeps width by temperature control unit, thereby the speed of cooling of sheet glass is adjusted.
By this, can carry out the temperature control of sheet glass effectively.
Again, be preferably, a plurality of coolings are adjusted plate and are disposed at the below of environment partition member up and down.The environment partition member is disposed near junction of two streams of melten glass and separates upside environment and the downside environment of junction of two streams up and down.
In the space of the heat of blocking molding by environment partition member up and down, cooling is adjusted plate the speed of cooling of melten glass is controlled, so temperature control unit is difficult to involve to molding to the influence of cooling.Do not make the temperature control that changes and namely can carry out the sheet glass in the viscoelasticity zone efficiently along the best glass viscosity of the melten glass that flows on the molding again.
And then, being preferably, each cooling adjustment plate extends in the horizontal direction that the flow direction with melten glass intersects, and temperature control unit comprises pipe.The fluid that circulation is cooled off or heated the integral body of each cooling adjustment plate in the pipe.
Can be by the fluid that in pipe, flows, the integral body of cooling off the adjustment plate from each of the rear side of sheet glass subtend face pair and sheet glass subtend is cooled off or is heated.
And then, being preferably, pipe comprises to be responsible for and looped pipeline.Be responsible for along cooling off the length direction of adjusting plate and disposing.Looped pipeline is linked to the person in charge's both sides respectively.Looped pipeline is to being responsible for the gas that transmits as heat exchange medium.Again, be preferably, the person in charge has a plurality of blow-off outlets.A plurality of blow-off outlets will blow out outside being responsible for from the gas that looped pipeline transmits and blow to cooling adjustment plate.
By adjusting plate and from a plurality of blow-off outlet blow gas, can cool off the temperature control of adjusting plate effectively with respect to cooling.
And then, being preferably, a plurality of blow-off outlets are according to having set size respectively apart from the distance of the sidepiece of being responsible for, so that the gas volume that blows out from each blow-off outlet becomes even.
By the size and location of adjusting the blow-off outlet of plate blow gas towards cooling are regulated, even if to change to a certain degree to the pressure of pipe gas supplied, also can make the amount of cooling water on the width of the upwardly extending cooling adjustment of the 1st side slab integral roughly remain fixing.Adjust amount of cooling water on the width of slab integral by cooling and roughly remain fixingly, can make the preferable sheet glass of possessing higher planeness.
Again, be preferably, it is channel-section steel that plate is adjusted in cooling, the principal part of channel-section steel and sheet glass subtend.By this, can improve the intensity that plate is adjusted in cooling.
And then, being preferably, the manufacturing installation of sheet glass also possesses the 1st encirclement member, the 2nd and surrounds member, reaches heat insulating component.The 1st surrounds member surrounds the 1st pipe and forms the 1st space.So-called the 1st pipe refers to circulate and the 1st cooling is adjusted plate cools off or the pipe of the fluid that heat, and so-called the 1st space refers to the space in order to the speed of cooling of adjusting the 1st cooling adjustment plate.The 2nd surrounds member surrounds the 2nd pipe and forms the 2nd space.So-called the 2nd pipe refers to circulate and adjusts the 2nd cooling of plate and adjust that plate cools off or the pipe of the fluid that heats being adjacent to the 1st cooling.So-called the 2nd space refers to adjust the space of the speed of cooling of plate in order to adjust the 2nd cooling.Heat insulating component is disposed between the 1st space and the 2nd space, blocks the movement of the heat between the 1st space and the 2nd space.
Owing to block the movement of the heat in the 1st space and the 2nd space by heat insulating component, when the temperature control of plate is adjusted in the 1st cooling, can reduce the Temperature Influence of the 2nd cooling being adjusted plate.
Again, be preferably, the manufacturing installation of sheet glass also possesses the gas control unit.The gas control unit is controlled blowing to cooling off the gas flow of adjusting plate.By this, can reduce from a blow-off outlet and adjust the influence that gas that plate blows causes the gas that blows out from another blow-off outlet to cooling.
[effect of utility model]
With sheet glass manufacturing installation of the present utility model, can carry out the temperature control of sheet glass effectively.
Description of drawings
Fig. 1 is the summary pie graph of sheet glass manufacturing installation;
Fig. 2 is the summary pie graph (sectional view) of building mortion;
Fig. 3 is the summary pie graph (side-view) of building mortion;
Fig. 4 adjusts the figure of plate for the expression cooling;
Fig. 5 is for representing by the figure of cooling adjustment plate with the space that surrounds member formation;
Fig. 6 for expression from be responsible for the gas blow out and blow out after the figure of gas flow;
Fig. 7 is the figure of the formation of expression pipe;
Fig. 8 is expression control device and the figure that is connected in each mechanism of control device.
Embodiment
(1) whole formation
In Fig. 1, represent the summary pie graph of the sheet glass manufacturing installation 100 of the 1st embodiment of the present utility model.Sheet glass manufacturing installation 100 is to adopt scorification to make the device of sheet glass 91.Be used in the glass substrate of flat-panel monitors such as liquid-crystal display or plasma display panel by the sheet glass 91 of sheet glass manufacturing installation 100 manufacturings.Again, in present embodiment, sheet glass manufacturing installation 100 is made the sheet glass 91 of the glass substrate that is used in the G5 size.Sheet glass manufacturing installation 100 is made banded sheet glass 91 continuously.
Sheet glass manufacturing installation 100 mainly comprises fusion groove 200, limpid groove 300, reaches building mortion 101.In fusion groove 200, the raw material of glass is fused and is generated melten glass.Thereafter, melten glass is sent in the limpid groove 300.In limpid groove 300, carry out the removal of the bubble in the melten glass.Thereafter, melten glass is sent to building mortion 101.
In Fig. 2 and Fig. 3, the summary of expression building mortion 101 constitutes.Fig. 2 is the sectional view of building mortion 101.Fig. 3 is the side-view of building mortion 101.As Fig. 2, Fig. 3 and shown in Figure 6, building mortion 101 mainly by molding 10, up and down environment partition member 20,20, a plurality of cooling roller 30, cooling adjustment unit 40a~40f, surround member 70a, 70b, 70c, a plurality of heat insulating component 71, a plurality of withdrawing roll 60 down, and control device 80 constitute.Below, at length each formation that comprises in the building mortion 101 is described.
(2) constitute in detail
(2-1) molding
Molding 10 is configured as tabular glass (sheet glass 91) by making melten glass 90 overflows with melten glass 90.Molding 10 has influx 12(with reference to Fig. 3).Melten glass 90 via fusion groove 200 and limpid groove 300 flows into from influx 12.As shown in Figure 2, molding 10 has section shape and is the shape of 5 limit shapes roughly.Roughly the front end of 5 limit shapes is equivalent to the bottom of molding 10.In molding, be formed with groove 11.Groove 11 extends on the length direction of molding 10.Particularly, groove 11 extends to the 2nd end with the 1st end subtend from the 1st end that is provided with influx 12.Groove 11 forms as follows: the darkest near the influx 12, and along with shoaling gradually near the 2nd end.Two sides from the melten glass 90 of molding 10 overflows along molding 10 and flowing down, and in the interflow, bottom of molding 10.
(2-2) environment partition member up and down
Environment partition member 20,20 is disposed near the junction of two streams of melten glass 90 up and down.
Again, as shown in Figure 2, environment partition member 20,20 is disposed at the thickness direction both sides of sheet glass 91 up and down.Environment partition member 20, the 20th up and down, lagging material.That is, environment partition member 20,20 upside environment and downside environment by the junction of two streams of separating melten glass 90 up and down, and blocking-up heat is from environment partition member 20 up and down, 20 the downward side shifting of upside.
(2-3) cooling roller
A plurality of cooling rollers 30 are tabular melten glass 90(sheet glass 91 with collaborating in the bottom of molding 10) contact, and for glass being cooled off and arranging.
(2-4) cooling adjustment unit
Cooling adjustment unit 40a~40f is the unit that the speed of cooling of sheet glass 91 is adjusted.In present embodiment, be provided with 6 cooling adjustment unit 40a~40f.As shown in Figures 2 and 3, cooling adjustment unit 40a~40f is disposed at environment partition member 20 up and down, 20 below.Again, cooling adjustment unit 40a~40f disposes side by side along the flowing down direction of sheet glass 91.A plurality of cooling adjustment unit 40a~40f are seamlessly arranged side by side.Each cools off adjustment unit 40a~40f and is the formation that can be controlled independently.In present embodiment, cooling adjustment unit 40a~40f is respectively with along the flowing down direction of sheet glass 91 and the mode that can interim ground cool off sheet glass 91 is controlled.
In cooling adjustment unit 40a, comprise cooling adjust plate 41a, and cooling adjusted temperature control unit 50a(that the temperature of plate 41a controls with reference to Fig. 6).In the same manner, in cooling adjustment unit 40b, comprise cooling and adjust plate 41b, and cooling adjusted the temperature control unit that the temperature of plate 41b is controlled, in cooling adjustment unit 40c, comprise cooling and adjust plate 41c, and cooling adjusted the temperature control unit that the temperature of plate 41c is controlled.40d-40f is also identical for other cooling adjustment units.The temperature control unit of controlling for the temperature of cooling being adjusted plate 41b, 41c, only figure is shown with pipe 51b, 51c(that temperature control unit comprises with reference to Fig. 5).Moreover the formation of all cooling adjustment unit 40a~40f is all identical.Therefore, below lifting cooling adjustment unit 40a is example, the cooling that cooling adjustment unit 40a is comprised adjust plate 41a, and temperature control unit 50a describe.Cooling adjustment unit 40a is disposed at upstream with respect to the flowing down direction of sheet glass 91 in 6 cooling adjustment unit 40a~40f.
(2-4-1) plate is adjusted in cooling
It is the near surface that is disposed at sheet glass 91 that plate 41a is adjusted in cooling, and the member that the speed of cooling of sheet glass 91 is adjusted.Cooling adjust plate 41a with melten glass 90(sheet glass 91) direction (the being horizontal direction) extension that intersects of flow direction.The length of the length direction of cooling adjustment plate 41a slightly is shorter than the length of the width of sheet glass 91.In present embodiment, the length that the length direction of plate 41a is adjusted in cooling is 1,500mm.
It is the hardware of having implemented bending process that plate 41a is adjusted in cooling.Be preferably, hardware is the stable on heating member that has in atmosphere more than 600 ℃.Again, be preferably, hardware has the above thermal conductivity of 30W/m K at least.As mentioned above, by using the higher hardware of thermal conductivity, the surface of plate 41a is adjusted in cooling and the temperature head at the back side diminishes, and the difference of the thermal expansion on surface and the thermal expansion at the back side is suppressed, and is suppressed thereby cool off the warpage of adjusting plate 41a.Again, because thermal conductivity is higher, therefore when producing the situation of the temperature head of cooling off the each several part of adjusting plate 41a, this temperature head is also promptly relaxed.And then, owing to use the higher hardware of thermal conductivity to adjust plate 41a as cooling, so the cooling efficiency of sheet glass 91 also uprises.For the emissivity characteristic of hardware, in order to ensure higher rate of heat exchange, being preferably in the use temperature zone is more than 0.85.In present embodiment, use pure nickel (thermal conductivity: 90.7W/m K) as hardware.
As shown in Figure 4, cooling adjust plate 41a by kink 42a, and major portion 43a constitute.Kink 42a is positioned at the upper and lower of the hardware that extends in the horizontal direction, and is the bending part of hardware.The part except kink 42a in the hardware that extends on horizontal direction is major portion 43a.Major portion 43a has the smooth face (subtend face) with sheet glass 91 subtends.Particularly, cooling adjustment plate 41a is channel-section steel (channel-section steel).
Can suitably change the size h of major portion 43a herein, in order to obtain required speed of cooling.For example, the flow according to the per unit width of glass changes.Again, be preferably, major portion 43a has the above thickness t of set value.Particularly, thickness t is preferably more than about 4mm.From the viewpoint of thermal capacity, thickness t is more preferred from more than the 6mm and then is preferably more than the 8mm.When the situation of the channel-section steel of the thickness t of using this degree, the thermal capacity that plate 41a is adjusted in cooling fully becomes greatly, and the homogeneity of the temperature distribution of sheet glass 91 more improves thereby temperature head diminishes.Again, the size w of kink 42a is about 20mm~about 50mm.Moreover cooling is adjusted the cooling of plate 41a and adjacency and is adjusted plate 41b spiral shell solid (with reference to Fig. 5).Particularly, cooling off the kink 42a that adjusts plate 41a and the kink 42b spiral shell that cools off adjustment plate 41b links admittedly.Therefore, kink 42a is as long as have the size of can spiral shell solid degree basically.Yet kink 42a also helps to increase the second moment of area that plate 41a is adjusted in cooling, so the too short situation of kink 42a is not good.
(2-4-2) temperature control unit
Temperature control unit 50a adjusts the temperature that plate 41a is adjusted in cooling.Particularly, temperature control unit 50a is with along the flowing down direction of sheet glass 91 and the mode of interim ground cooled glass plate 91 is adjusted the temperature of plate 41a and adjusted to the cooling of correspondence.
Temperature control unit 50a mainly by pipe 51a, thermistor 56(with reference to Fig. 7), and gas control unit 57a constitute.
A) pipe
The fluid that pipe 51a circulation is cooled off or heated in order to the integral body of cooling being adjusted plate 41a.Herein, the fluid of so-called circulation in pipe refers to gas (for example rare gas element such as air or nitrogen).In pipe 51a, comprise person in charge 52a, reach looped pipeline 531a, 532a.
As shown in Figure 6, be responsible for 52a along cooling off the length direction of adjusting plate 41a and disposing.In being responsible on the 52a, a plurality of blow-off outlets 521 have been formed uniformly.Particularly, a plurality of blow-off outlets 521 are formed on the position with respect to the medullary ray C symmetry of being responsible for 52a.Again, as shown in Figure 5, blow-off outlet 521 be arranged on the position of cooling off the major portion 43a subtend of adjusting plate 41a on.That is, the gas that blows out from blow-off outlet 521 blows the major portion 43a that adjusts plate 41a to cooling.More specifically, the gas that blows out from blow-off outlet 521 blows to the rear side of subtend face.Blow-off outlet 521 is according to having set size respectively apart from the distance of the sidepiece of being responsible for 52a.That is, the size of blow-off outlet 521 is also with respect to the medullary ray C symmetry of being responsible for 52a.Herein, the sidepiece in being responsible for 52a comprises the 1st sidepiece and the 2nd sidepiece.The 1st sidepiece and the 2nd sidepiece are benchmark with the medullary ray C of the length direction of person in charge 52a, are disposed on the position of symmetry.Again, the so-called set size quantitative change size uniformly that refers to the gas that blows out from each blow-off outlet 521.Particularly, the size of blow-off outlet 521 be form blow-off outlet 521 the position more away from sidepiece then more big (with reference to Fig. 7).
Looped pipeline 531a, 532a are to being responsible for the pipe of 52a transmission as the gas of heat exchange medium.Looped pipeline 531a, 532a are connected to the both sides (the 1st sidepiece and the 2nd sidepiece) of being responsible for 52a.Particularly, the 1st sidepiece in being responsible for 52a is connected with the 1st looped pipeline 531a, and the 2nd sidepiece in being responsible for 52a is connected with the 2nd looped pipeline 532a.As shown in Figure 6, the 1st looped pipeline 531a and the 2nd looped pipeline 532a are connected with gas feed unit 54.The amount that is sent to the gas of the 1st looped pipeline 531a and the 2nd looped pipeline 532a from gas feed unit 54 is to adjust by air supply valve 55.
B) thermistor
Thermistor 56 is measured the temperature that plate 41a is adjusted in cooling.Thermistor 56 is equipped with a plurality of on the length direction of cooling adjustment plate 41a.The temperature that plate 41a is adjusted in the cooling of measuring by thermistor 56 is sent to control device 80 described below.
C) gas control unit
Gas control unit 57a is the unit of controlling to the gas flow of cooling adjustment plate 41a blowing.Particularly, gas control unit 57a controls as follows: blow the flows lengthwise that can not adjust plate 41a to the gas of cooling adjustment plate 41a in cooling.More specifically, as shown in Figure 6, gas control unit 57a controls gas flow as follows: be responsible for gas that the blow-off outlet 521 of 52a blows out certainly before the length direction that blows after plate 41a is adjusted in cooling and adjust plate 41a along cooling flows, to mobile with the diametical direction d2 of blow-off direction d1.Gas control unit 57a constitutes as follows: by controlling toward the mode that direction d2 flows with the gas that will blow out from blow-off outlet 521, the gas that blows out from a blow-off outlet 521 can not impact the gas flow direction d1 that blows out from another blow-off outlet 521.Going up the gas that flows in direction d2 discharges outside stove.
(2-5) surround member
Encirclement member 70a, 70b, 70c form space 72a, the 72b that controls in order to the temperature of cooling being adjusted plate 41a, 41b, 41c, the member of 72c.Encirclement member 70a, 70b, 70c are connected in cooling and adjust plate 41a, kink 42a, the 42b of 41b, 41c, 42c.Cooling adjust plate 41a, 41b, 41c, be connected in that the encirclement member 70a of plate 41a, 41b, 41c is adjusted in cooling, 70b, 70c form and surround pipe 51a, 51b, space 72a, the 72b of 51c, 72c.
Particularly, as shown in Figure 5, adjust plate 41a in the 1st cooling and be connected with the 1st encirclement member 70a, 70a.Adjust plate 41a and the 1st by the 1st cooling and surround member 70a, 70a, form the 1st space 72a that surrounds the 1st pipe 51a.Adjust the temperature that plate 41a is adjusted in the 1st cooling by the 1st space 72a.
Adjust plate 41b in the 2nd cooling and be connected with the 2nd encirclement member 70b, 70b again.Adjust plate 41b and the 2nd by the 2nd cooling and surround member 70b, 70b, form the 2nd space 72b that surrounds the 2nd pipe 51b.Adjust the temperature that plate 41b is adjusted in the 2nd cooling by the 2nd space 72b.
And then, adjust plate 41c in the 3rd cooling and be connected with the 3rd encirclement member 70c, adjust plate 41c and the 3rd by the 3rd cooling and surround member 70c, form the 3rd space 72c of encirclement the 3rd pipe 51c.Adjust the temperature that plate 41c is adjusted in the 3rd cooling by the 3rd space 72c.
Moreover the effect of surrounding member 70a, 70b, 70c also can realize by following a plurality of heat insulating components 71, thus surround member 70a, 70b, 70c also can be thermal baffle, and also can make following a plurality of heat insulating component 71 dual-purposes for surrounding the effect of member.
(2-6) heat insulating component
A plurality of heat insulating components 71 are members of movement of heat of space 72a, 72b, the 72c of blocking-up adjacency.Particularly, a plurality of heat insulating components 71 are disposed between the encirclement member 70a, 70b, 70c of the space 72a, the 72b that form adjacency, 72c.More specifically, as shown in Figure 5, heat insulating component 71 be disposed at form the 1st of the 1st space 72a surround member 70a, with the 2nd encirclement member 70b that forms the 2nd space 72b that is adjacent to the 1st space 72a between, block the movement of the heat between the 1st space 72a and the 2nd space 72b.Again, heat insulating component 71 be disposed at form the 2nd of the 2nd space 72b surround member 70b, with the 3rd encirclement member 70c that forms the 3rd space 72c that is adjacent to the 2nd space 72b between, block the movement of the heat between the 2nd space 72b and the 3rd space 72c.
Withdrawing roll (2-7)
What a plurality of down withdrawing rolls 60 were disposed at sheet glass 91 with respect to cooling adjustment unit 40a~40f flows down the direction downstream, and downdraw sheet 91 downwards.
A plurality of down withdrawing rolls 60 are disposed at thickness direction both sides (with reference to Fig. 2), and the width both sides (with reference to Fig. 3) of sheet glass 91 of sheet glass 91.A plurality of withdrawing rolls 60 down drive by motor (not shown).Again, a plurality of withdrawing rolls 60 down rotate to the inside with respect to sheet glass 91.By this, the two pairs of following withdrawing rolls 60 downdraw sheet 91 downwards.
(2-8) control device
Control device 80 by CPU, RAM, ROM, and hard disc etc. constitute.As shown in Figure 8, control device 80 and a plurality of cooling rollers 30, a plurality of withdrawing roll 60 down, gas control unit 57a, gas feed unit 54, air supply valve 55, and thermistor 56 etc. be connected.
80 pairs of cooling rollers 30 of control device, down withdrawing roll 60, gas control unit 57a, and the driving part of gas feed unit 54 control.Again, switching or the aperture of 80 pairs of air supply valves 55 of control device are controlled.Again, control device 80 obtains the temperature of measuring by thermistor 56 and stores.And then control device 80 is adjusted the feed rate of gas based on the temperature of measuring by thermistor 56.
(3) molar behavior
Two sides from the melten glass 90 of molding 10 overflows along molding 10 flow down, at the interflow, bottom of molding 10.The melten glass 90 that collaborates in the bottom of molding 10 becomes tabular (sheet glass 91) and further flows down thereafter.Sheet glass 91 is by cooling roller 30 clamping width both ends, thereby both ends are cooled.Again, the part except the width both ends of sheet glass 91 is by a plurality of cooling adjustment unit 40a~40f, and direction is adjusted speed of cooling interimly under the longshore current.Particularly, control as follows: adjust plate 41a, and the 1st temperature control unit 50a corresponding with the 1st cooling adjustment plate 41a by the 1st cooling, and that the temperature of the width of sheet glass 91 becomes is fixing.Thereafter, sheet glass 91 by with the 1st cooling adjust plate 41a side by side the 2nd cooling of configuration adjust plate 41b, and with corresponding the 2nd temperature control unit 50b of the 2nd cooling adjustment plate 41b and further cooled off.At this moment, the 2nd temperature control unit 50b is control as follows again also: the temperature that makes the 2nd cooling adjust the length direction of plate 41b becomes fixing, and the temperature of the width of sheet glass 91 is become evenly.As mentioned above, a plurality of cooling adjustment unit 40a~40f simultaneously make the temperature of the width of sheet glass 91 become evenly, and one side along the cooled glass plate 91 of sheet glass 91 with flowing down the direction stage.Thereafter, sheet glass 91 is further drop-down downwards by following withdrawing roll 60, is that unit cuts off with set length thereafter.
(4) feature
(4-1)
In the sheet glass manufacturing installation 100 of above-described embodiment, in building mortion 101, a plurality of cooling adjustment unit 40a~40f are along sheet glass 91(melten glass 90) the direction that flows down dispose side by side.The cooling that comprises among cooling adjustment unit 40a~40f is adjusted the temperature of plate 41a, 41b, 41c and is adjusted by the temperature control unit 50a of correspondence.That is, in sheet glass manufacturing installation 100, the degree of freedom of the control of the speed of cooling of the above-below direction of sheet glass 91 (length direction) is improved.
In previous sheet glass manufacturing installation, by near configuration tabular component sheet glass, prevent the situation that the cooling because of the convection current sheet glass that produces becomes inhomogeneous in stove, but do not have the mechanism that can on the drop-down direction of sheet glass, at random adjust the temperature of tabular component.Follow the increase in demand of glass substrate, expectation is controlled the speed of cooling of sheet glass and is improved the turnout of sheet glass, but in previous sheet glass manufacturing installation, required amount of cooling water in order to ensure following turnout to increase can't realize that the sheet glass that does not have device integral body pulls down the maximization of direction and improves turnout fully.
In the sheet glass manufacturing installation 100 of above-described embodiment, in building mortion 101, use cooling adjustment unit 40a~40f for the speed of cooling of adjusting sheet glass 91.In cooling adjustment unit 40a~40f, comprise cooling respectively and adjust plate 41a, 41b, 41c and temperature control unit 50a, and adjust by the temperature that temperature control unit 50a adjusts plate 41a, 41b, 41c to cooling, so can adjust according to required speed of cooling to sheet glass 91.By this, can not make that device is whole to maximize and efficiently speed of cooling is controlled in limited space, so can improve the turnout of sheet glass 91.
(4-2)
In the sheet glass manufacturing installation 100 of above-described embodiment, in building mortion 101, use a plurality of cooling adjustment unit 40a~40f again.The cooling that comprises among the one cooling adjustment unit 40a is adjusted plate 41a and is extended on the width of sheet glass 91.And temperature control unit 50a cools off the temperature control of the integral body of adjusting plate 41a.Therefore, can keep the state of the temperature on the width of sheet glass 91 equably, along the temperature that direction reduces sheet glass 91 that flows down of sheet glass 91 interimly.The interior planeness quality of effective width that can keep by this, sheet glass 91 well.
(4-3)
In the sheet glass manufacturing installation 100 of above-described embodiment, environment partition member 20 up and down, 20 below be provided with a plurality of cooling adjustment unit 40a~40f. Environment partition member 20,20 below become by environment partition member 20 up and down, 20 and the space of the heat of blocking-up molding 10 up and down.Cooling adjustment unit 40a~40f controls the speed of cooling of melten glass 90 in the space that the heat of molding 10 is blocked.By this, reduce the influence that the temperature at the mobile melten glass of molding is caused, thereby can carry out temperature control efficiently.
(4-4)
In above-described embodiment, the person in charge 52a that adjusts plate 41a, 41b, 41c blow gas to cooling adjusts plate 41a with cooling, 41b, 41c extend on horizontal direction in the same manner.
Again, person in charge 52a has and cooling adjustment plate 41a, 41b, 41c subtend and the empty blow-off outlet of opening set distance interval and arranging.Blow-off outlet is according to setting size apart from the position that links the sidepiece that looped pipeline is arranged.Cooling is adjusted the temperature of plate 41a, 41b, 41c and is adjusted by the gas that blows from blow-off outlet.By this, the temperature that cooling is adjusted on the width of plate 41a, 41b, 41c is carried out temperature control near uniform mode.
(4-5)
Again, in above-described embodiment, the blow-off outlet 521 that person in charge 52a has is that symmetry axis has different sizes according to the distance of distance sidepiece with the medullary ray C on the width.Supply with the cooling gas of the pressure that equates from both sides by the loop pipe arrangement, so the distance of sidepiece (gas is the supply position to the person in charge from looped pipeline) till blow-off outlet 521 is more far away, pressure loss is more big.That is, the position of blow-off outlet 521 is more far away apart from sidepiece, and the pressure of the gas that blows out from blow-off outlet 521 more descends, thereby is difficult to guarantee sufficient flow in all blow-off outlets 521.Therefore, in above-described embodiment, change the size (port area) of each blow-off outlet according to the distance of distance sidepiece.Particularly, more away from sidepiece, the port area of blow-off outlet 521 is more big.Again, blow-off outlet 521 is formed at respect to medullary ray C becomes on the position of symmetry.Its result becomes uniform mode with the temperature on the length direction of cooling adjustment plate 41a, and gas blows out from being responsible for 52a.By this, plate 41a is adjusted in each cooling, 41b, 41c roughly remain uniform temperature, thereby can make the sheet glass 91 of preferable planeness on width.
(4-6)
And then in above-described embodiment, plate 41a is adjusted in cooling, 41b, 41c are channel-section steel.Namely, cooling is adjusted plate 41a and is had kink 42a and major portion 43a, kink 42a is the part of bending up and down of the hardware that extends on horizontal direction, major portion 43a is the part except kink 42a in the hardware that extends on horizontal direction, is the smooth face with sheet glass 91 subtends.Therefore, cooling is adjusted plate 41a, 41b by adopting this bending structure, and becomes big with respect to the second moment of area of the stress in bending of in-plane, so can suppress because of the surface of major portion 43a and the distortion of the temperature head generation at the back side.That is, can suppress to cool off the bending of adjusting plate 41a, 41b, thus the distance that prevents sheet glass (glass ribbon) 91 and cooling adjustment plate 41a, 41b different situation according to the position and significantly on the drop-down direction of sheet glass especially.
By this, can suppress the deterioration of the planeness in the process of cooling of glass ribbon.
Again, in above-described embodiment, the major portion 43a that plate 41a is adjusted in cooling has the above thickness t of about 4mm.By this, when producing the situation of temperature inequality on the glass subtend opposite surfaces width of Yu Zaiyu cooling adjustment plate 41a, the temperature head of glass subtend face is relaxed by the thermal conduction of cooling adjustment plate 41a inside, thereby can suppress the temperature of sheet glass 91 is controlled the influence that causes.Again, when the sheet glass 91 between inflow cooling adjustment plate has originally had the situation of temperature inequality on width, interior temperature homogeneity is higher if the face of plate is adjusted in cooling, then follows and the heat exchange of adjusting plate, and the temperature inequality that sheet glass 91 has is relaxed.
(4-7)
In above-described embodiment, be following formation: by using encirclement member 70a, 70b, 70c and a plurality of heat insulating component 71, one cooling adjustment unit 40a to be difficult to the cooling adjustment unit 40b of adjacency is impacted again.Particularly, adjust the encirclement member 70a that connects on plate (plate is adjusted in the 1st cooling) 41a, adjust between the encirclement member 70b that is connected on plate (the 2nd cooling adjustment plate) 41b with the cooling of the 2nd cooling adjustment unit 40b in the cooling of the 1st cooling adjustment unit 40a, dispose heat insulating component 71, thus the 1st space 72a that adjusts in order to the temperature of the 1st cooling being adjusted plate 41a, with blocked in order to the movement of the heat between the 2nd space 72b that the temperature of the 2nd cooling adjustment plate 41b is adjusted.
By this, can reduce the influence that a cooling adjustment unit 40b who cools off the adjacency of adjustment unit 40a causes.
(4-8)
And then, in above-described embodiment, control the gas flow of adjusting after plate 41a blows to cooling off by gas control unit 57a.Gas control unit 57a is to adjusting the just in time opposite direction d2 circulation of blow-off direction d1 of the gas of plate 41a to cooling with pipe certainly.By this, can reduce the influence that the gas that blows out from a blow-off outlet 521 causes the gas flow direction d1 that blows out from another blow-off outlet 521.
(5) variation
(5-1) variation A
In above-described embodiment, the example of using scorification to make the situation of sheet glass 91 is illustrated, but adopts when using the formation of a plurality of cooling adjustment unit 40a~40f also can draw manufactured sheet glass 91 under using discharge orifice situation.
(5-2) variation B
In above-described embodiment, adopt pure nickel as the higher material of thermal conductivity, but also can use other materials as the higher material of thermal conductivity.For example, also can be molybdenum, sintered sic, recrystallize SiC, synthetic graphite, iron, tungsten etc.Yet, when adopting the situation of molybdenum, be preferably under non-oxygenated environment and use.When under well-oxygenated environment, using the situation of molybdenum, be preferably and implement the resistance to oxidation coating again.Again, sintered sic can adopt under well-oxygenated environment, synthetic graphite, iron, and tungsten can when the situation under non-oxygenated environment, used, adopt.Again, comparatively ideally be, for promote to cool off adjust plate and sheet glass because of the caused heat exchange of thermal radiation, when using the situation of the not high material of emissivity, will in its stable on heating component surface be coated with improve emissivity the material person as cooling adjustment plate 41a, 41b, 41c.
(5-3) variation C
In above-described embodiment, use channel-section steel (channel-section steel shape) to adjust plate 41a, 41b, 41c as cooling, but plate 41a is adjusted in cooling, 41b, 41c are not limited to above-mentioned shape, also can be other shapes.At this moment, be preferably and be made as following formation: the contact that the cooling of adjacency is adjusted between plate 41a, 41b is made as irreducible minimum, and the thermal conduction between plate 41a, 41b is adjusted in the cooling of inhibition adjacency.For example, cooling adjust plate 41a, 41b, 41c also can be for the polygon post shapes of round bar (cylinder) shape or odd number etc.
(5-4) variation D
In above-described embodiment, be formed uniformly a plurality of blow-off outlets 521 being responsible for 52a, but this a plurality of blow-off outlets 521 can also form based on the distance interval of the size of the distance of distance sidepiece and blow-off outlet 521.
(5-5) variation E
In above-described embodiment, example during as the used sheet glass 91 of the glass substrate of making the G5 size, illustration has the length of cooling off on the length direction of adjusting plate 41a, 41b, 41c or the quantity (6) of cooling off adjustment unit 40a~40f, but also can adjust the length of length direction or the quantity of cooling adjustment unit according to the size of the sheet glass of making 91.
(5-6) variation F
Again, comparatively ideal is that in above-described embodiment, the major portion 43a that plate 41a is adjusted in cooling keeps higher linearity on width, but also can be convex-concave on short transverse.By this, can suppress flowing of the upstream that produces along sheet glass 91, thereby suppress the generation of the speed of cooling difference that causes because of the position.
(5-7) variation G
In the sheet glass manufacturing installation 100 of above-described embodiment, also can be the formation of 54 pairs one coolings of gas feed unit adjustment unit 40a supply gas, also can be the formation of 54 pairs of a plurality of cooling adjustment unit 40a~40f supply gas of a gas feed unit again.
Nomenclature
10 moldinies
11 grooves
Environment partition member about in the of 20
30 cooling rollers
40a~40f cools off adjustment unit
Plate is adjusted in 41a, 41b, 41c cooling
42a, 42b, 42c kink
43a, 43b major portion
The 50a temperature control unit
51a, 51b, 51c pipe
52a is responsible for
55 air supply valves
57a gas control unit
60 times withdrawing rolls
90 melten glass
91 sheet glass
100 sheet glass manufacturing installations
101 building mortions
521 blow-off outlets
531a, 532a looped pipeline
Patent documentation
Patent documentation 1: Japanese kokai publication hei 2-225326 communique

Claims (8)

1. a sheet glass manufacturing installation (100), it makes from the melten glass (90) of molding (10) overflow after the two sides along above-mentioned molding flow down, melten glass collaborated near the bottom of above-mentioned molding and make sheet glass (91), it is characterized in that possessing:
Plate (41a, 41b, 41c) is adjusted in a plurality of coolings, more locates to dispose side by side along the flow direction of above-mentioned melten glass in the below in the junction of two streams of more above-mentioned melten glass, and the speed of cooling of above-mentioned sheet glass is adjusted; And
Temperature control unit (50a), to adjust plate corresponding and arrange with each cooling for it, and temperature of each cooling adjustment plate is controlled.
2. sheet glass manufacturing installation according to claim 1, wherein,
Above-mentioned a plurality of cooling is adjusted plate and is disposed at the below of environment partition member (20) up and down, and environment partition member (20) is upside environment and the downside environment that is disposed near junction of two streams of above-mentioned melten glass and separates above-mentioned junction of two streams up and down.
3. sheet glass manufacturing installation according to claim 1 and 2, wherein,
Above-mentioned each cooling adjustment plate extends in the horizontal direction that the flow direction with above-mentioned melten glass intersects,
The said temperature control unit comprises that the integral body of plate being adjusted in above-mentioned each cooling for circulation is cooled off or the pipe (51a) of the fluid that heats.
4. sheet glass manufacturing installation according to claim 3, wherein,
Aforementioned tube comprises:
Be responsible for (52a), it is adjusted the length direction of plate and disposes along above-mentioned cooling; And
Looped pipeline (531a, 532a), it is linked to the above-mentioned person in charge's both sides respectively, to the gas of above-mentioned person in charge's transmission as heat exchange medium; And
The above-mentioned person in charge has in order to blowing out outside the above-mentioned person in charge from the gas of above-mentioned looped pipeline transmission and blow to a plurality of blow-off outlets (521) of above-mentioned cooling adjustment plate.
5. sheet glass manufacturing installation according to claim 4, wherein,
Above-mentioned a plurality of blow-off outlet is according to having set size respectively apart from the distance of the above-mentioned person in charge's sidepiece, so that the quantitative change of the above-mentioned gas that blows out from each blow-off outlet gets evenly.
6. sheet glass manufacturing installation according to claim 1 and 2, wherein,
It is channel-section steel that plate is adjusted in above-mentioned cooling, the principal part of above-mentioned channel-section steel and above-mentioned sheet glass subtend.
7. sheet glass manufacturing installation according to claim 3, wherein,
Also possess:
The 1st surrounds member (70a), and it surrounds that circulation adjusts to the 1st cooling that plate (41a) cools off or i.e. the 1st pipe (51a) of the aforementioned tube of the fluid that heat, forms the 1st space of adjusting in order to the temperature of above-mentioned the 1st cooling adjustment plate (72a);
The 2nd surrounds member (70b), it surrounds circulation to being adjacent to above-mentioned the 1st cooling and adjusting that the 2nd cooling of plate adjusts that plate (41b) cools off or i.e. the 2nd pipe (51b) of the aforementioned tube of the fluid that heat, forms the 2nd space of adjusting in order to the temperature of above-mentioned the 2nd cooling adjustment plate (72b); And
Heat insulating component (71), it is disposed between above-mentioned the 1st space and above-mentioned the 2nd space, blocks the movement of the heat between above-mentioned the 1st space and above-mentioned the 2nd space.
8. sheet glass manufacturing installation according to claim 4, wherein,
Also possesses the mobile gas control unit of controlling (57a) of adjusting the above-mentioned gas of plate to above-mentioned cooling to blowing.
CN2011900005560U 2010-08-04 2011-08-04 Glass plate manufacturing device Expired - Lifetime CN203173971U (en)

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TW201213247A (en) 2012-04-01

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