CN106007340A - Glass-melting method, process for manufacturing glass substrate and glass-melting apparatus - Google Patents
Glass-melting method, process for manufacturing glass substrate and glass-melting apparatus Download PDFInfo
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- CN106007340A CN106007340A CN201610346555.0A CN201610346555A CN106007340A CN 106007340 A CN106007340 A CN 106007340A CN 201610346555 A CN201610346555 A CN 201610346555A CN 106007340 A CN106007340 A CN 106007340A
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- electrode body
- glass
- hole
- electrode
- central shaft
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Classifications
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- C—CHEMISTRY; METALLURGY
- C03—GLASS; MINERAL OR SLAG WOOL
- C03B—MANUFACTURE, SHAPING, OR SUPPLEMENTARY PROCESSES
- C03B5/00—Melting in furnaces; Furnaces so far as specially adapted for glass manufacture
- C03B5/16—Special features of the melting process; Auxiliary means specially adapted for glass-melting furnaces
- C03B5/18—Stirring devices; Homogenisation
- C03B5/183—Stirring devices; Homogenisation using thermal means, e.g. for creating convection currents
- C03B5/185—Electric means
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- C—CHEMISTRY; METALLURGY
- C03—GLASS; MINERAL OR SLAG WOOL
- C03B—MANUFACTURE, SHAPING, OR SUPPLEMENTARY PROCESSES
- C03B5/00—Melting in furnaces; Furnaces so far as specially adapted for glass manufacture
- C03B5/02—Melting in furnaces; Furnaces so far as specially adapted for glass manufacture in electric furnaces, e.g. by dielectric heating
- C03B5/027—Melting in furnaces; Furnaces so far as specially adapted for glass manufacture in electric furnaces, e.g. by dielectric heating by passing an electric current between electrodes immersed in the glass bath, i.e. by direct resistance heating
-
- C—CHEMISTRY; METALLURGY
- C03—GLASS; MINERAL OR SLAG WOOL
- C03B—MANUFACTURE, SHAPING, OR SUPPLEMENTARY PROCESSES
- C03B5/00—Melting in furnaces; Furnaces so far as specially adapted for glass manufacture
- C03B5/16—Special features of the melting process; Auxiliary means specially adapted for glass-melting furnaces
-
- C—CHEMISTRY; METALLURGY
- C03—GLASS; MINERAL OR SLAG WOOL
- C03B—MANUFACTURE, SHAPING, OR SUPPLEMENTARY PROCESSES
- C03B5/00—Melting in furnaces; Furnaces so far as specially adapted for glass manufacture
- C03B5/16—Special features of the melting process; Auxiliary means specially adapted for glass-melting furnaces
- C03B5/42—Details of construction of furnace walls, e.g. to prevent corrosion; Use of materials for furnace walls
Abstract
Provided are: a glass-melting method by which the increase in frictional resistance between an electrode and a through hole of a melting vessel in thrusting the electrode through the through hole is suppressed to enable stable and long-term melting of glass in the melting vessel; a process for manufacturing a glass substrate; and a glass-melting apparatus. This glass-melting method includes: a measurement step for measuring, in subjecting an electrode which has shortened to pushing with a pressing member toward molten glass, the inclination of the rear end face of the electrode with respect to the central axis of a through hole; a deciding step for deciding, on the basis of the result obtained in the measurement step, the pressing direction in which the pressing member is to be pressed; and a pressing step for pressing the rear end face of the electrode with the pressing member in the pressing direction decided in the deciding step.
Description
The relevant information of divisional application
The application is divisional application.The original application of this division is filing date JIUYUE in 2013 24 days, Application No.
201380003757.X, invention entitled " melting method of glass, the manufacture method of glass substrate and the fusing device of glass "
Application for a patent for invention case.
Technical field
The present invention relates to the melting method of glass, the manufacture method of glass substrate and the fusing device of glass.
Background technology
Such as in the case of the glass substrate manufacturing flat faced display (FPD, flat panel display), generally
Input is made to melt to the frit melted in groove and manufacture melten glass.This melten glass after by the clarification such as de-bubble,
Forming device is utilized to be configured to foliated glass.Glass substrate is obtained by being cut off with specific length by this foliated glass.
When making frit melt and to manufacture melten glass, the frit put into the liquid level of melten glass passes through
The flame of burner etc. melts.Specifically, frit is by the heat radiation of furnace wall heated by burner etc. or high temperature
Change gaseous environment and at leisure start melt, thus in melten glass downwards melt.On the other hand, melten glass accumulates
In melting groove, the pair of electrodes contacted with melten glass is used to be passed through electricity.By this energising, melten glass self produces joule
Heat, melten glass self is heated by this Joule heat.
As for melting the material that the electrode of groove is used, it is well known that use platinum or platinum-rhodium alloy, molybdenum, oxidation
The heat-resisting material such as stannum (patent documentation 1).
[prior art document]
[patent documentation]
[patent documentation 1]: Japanese Patent Laid-Open 2003-292323 publication
Summary of the invention
[inventing problem to be solved]
But, using stannum oxide or the electrode of molybdenum, the part of the front end contacted with melten glass produces loss because of erosion,
Time dependent ground short and smallization.When more retreating because of the more specific position of front position of the caused electrode of erosion, there is more electric current
Flow through the misgivings melting the wall of groove and cause the wall melting groove to be etched.Therefore, if electrode is etched and causes its front end
More specific position, position more retreats, then in the way of must becoming ad-hoc location to make the front end of electrode, by electrode to melting groove
Inner side press-in.
Electrode is arranged in the through hole being arranged at the wall melting groove.When by electrode to the inner side press-in melting groove, as
Really the frictional resistance between electrode and through hole is relatively big, then have and the wall melting groove is applied power and the wall melting groove is caused damage
Filtration.
Thus, it is an object of the invention to, it is provided that a kind of electrode reduced when electrode being pressed in the through hole melting groove
And frictional resistance between through hole and melting groove can be used to melt the melting method of glass of glass, glass base steadily in the long term
The manufacture method of plate and the fusing device of glass.
[solving the technological means of problem]
One embodiment of the present invention is the melting groove by being provided with the electrode comprising stannum oxide at least one pair of through hole
The method that middle received glass melts.This glass melting method includes: determination step, by pressing member by short and smallization
Electrode when extruding to melten glass direction, measure the rear end face inclination relative to the central shaft of described through hole of described electrode
Degree；Deciding step, based on the measurement result obtained in described determination step, and determines the pressing direction of described pressing member；
And pressing step, based on the pressing direction obtained in described deciding step, and press described electrode by described pressing member
Rear end face.
In above-mentioned embodiment, preferably in described deciding step, in the way of making the gradient reduction of described rear end face
Determine described pressing direction.
Additionally, in above-mentioned embodiment, preferably in described pressing step, protruding outside by described melting groove
Described electrode at least some of from the state that direction that the central shaft with described through hole intersects is supported, presses described electrode
Rear end face.
Another embodiment of the present invention is the manufacture method of the glass substrate comprising above-mentioned glass melting method.
Additionally, another embodiment of the invention is the fusing device of a kind of glass, comprising: melt groove, it is at least
A pair through hole is provided with the electrode comprising stannum oxide；Pressing member, its by the described electrode of short and smallization to melten glass
Direction extrudes；And determinator, it measures the rear end face gradient relative to the central shaft of described through hole of described electrode.
[effect of invention]
According to above-mentioned embodiment, it is possible to decrease between electrode and through hole when electrode press-in being melted in the through hole of groove
Frictional resistance, thus can use melting groove melt glass steadily in the long term.
Accompanying drawing explanation
Fig. 1 is the block diagram of the step of the manufacture method of the glass that present embodiment is described.
Fig. 2 is to schematically show the figure from melting step to the device cutting off step carried out shown in Fig. 1.
Fig. 3 is the figure melting groove that explanation carries out the melting step shown in Fig. 1.
Fig. 4 is the sectional view near the electrode body in the xz plane of the xyz orthogonal coordinate system shown in Fig. 3.
Fig. 5 is the sectional view near the electrode body on the x/y plane of this orthogonal coordinate system.
Fig. 6 be from the x direction of this orthogonal coordinate system observe electrode body near face enlarged drawing.
Fig. 7 (a), (b) are the sectional views of the gradient representing the electrode body in the xz plane of this orthogonal coordinate system.
Fig. 8 (a), (b) are the sectional views of the gradient representing the electrode body on the x/y plane of this orthogonal coordinate system.
Detailed description of the invention
Hereinafter, the manufacture method of the glass of present embodiment is illustrated.Fig. 1 is the glass base that present embodiment is described
The block diagram of the step of the manufacture method of plate.
The manufacture method of glass substrate mainly includes melting step (ST1), clarification steps (ST2), homogenization step
(ST3), supplying step (ST4), forming step (ST5), slow cooling step (ST6) and cut-out step (ST7).Additionally include mill
Cutting step, grinding steps, cleaning step, inspection step and packing step etc., the multiple glass plates at packing step lamination are removed
Deliver to the dealer of supplier.
Fig. 2 is to schematically show to carry out from melting step (ST1) to the installation drawing cutting off step (ST7).This device is such as
As shown in Fig. 2, mainly include fusing device 200, forming device 300 and shearing device 400.Fusing device 200 mainly includes melting
Solve groove 201, defecator 202, agitator tank the 203, the 1st pipe arrangement the 204 and the 2nd pipe arrangement 205.
In melting step (ST1), the frit being fed to melt in groove 201 utilizes from burner 206 (with reference to figure
3) flame sent heats and melts, and thus manufactures melten glass MG.Thereafter, use electrode body 208 (with reference to Fig. 3) to melted glass
Glass MG carries out electrified regulation.
Clarification steps (ST2) is carried out in defecator 202.By the melten glass MG in defecator 202 is heated,
O contained in melten glass MG2Deng the oxygen that produced by the reduction reaction of clarifier of bubble absorption and grow up, and float up to
Discharge on liquid level.Or, the gas componant such as oxygen in bubble is absorbed in melted glass because of the oxidation reaction of clarifier
In glass, thus bubble collapse.
In homogenization step (ST3), the melten glass MG in the agitator tank 203 by the 1st pipe arrangement 204 supply is used
Agitator is stirred, and carries out homogenizing of glass ingredient with this.
In supplying step (ST4), melten glass MG is supplied to forming device 300 by the 2nd pipe arrangement 205.
In forming device 300, form step (ST5) and slow cooling step (ST6).
In forming step (ST5), melten glass MG is configured to foliated glass and forms foliated glass stream.In this enforcement
In mode, use overflow downdraw.In slow cooling step (ST6), to the foliated glass shaped and flow to become desired
Thickness, and do not produce internal stress, and then the constant big mode of percent thermal shrinkage cools down.
In cutting off step (ST7), at shearing device 400, the foliated glass supplied from forming device 300 is cut to spy
Fixed length, is derived from glass substrate.Through cut off glass substrate so that be cut to certain size and manufacturing objective chi
Very little glass substrate.Thereafter, to glass substrate carry out end face grinding and grind after be carried out, and then check bubble or
The presence or absence of the abnormal defect such as striped, and will check that the glass substrate for certified products is packed as end article.
Fig. 3 is the figure melting groove 201 that explanation carries out melting step.
Melt groove 201 and there is the wall 210 being made up of the refractory body component as refractory brick.Melt groove 201 to have by wall 210
Around inner space.The inner space melting groove 201 includes: liquid bath B, and it heats and houses the glass putting into extremely above-mentioned space
The melten glass MG that raw material melts；And the upper space A as gas phase, it is formed at the upper strata of melten glass MG, and supplies
Put into frit.
On the wall 210 of upper space A, it is provided with and makes burning such as the burning gases being mixed with fuel and oxygen etc. send fire
The burner 206 of flame.The refractory body component of upper space A is heated by flame and makes wall 210 become high by burner 206
Temperature.Frit, by becoming the radiant heat of the wall 210 of high temperature, melts by becoming the environment heating of the gas phase of high temperature in addition
Solve.
Melt groove 201 liquid bath B to wall 210,210, be respectively arranged with 3 through hole 210a.At through hole
210a is configured with the 3 pairs of electrode body 208 comprising the conductive material that stannum oxide or molybdenum etc. have thermostability.This embodiment party
In formula, electrode body 208 comprises stannum oxide.3 pairs of electrode body 208 both pass through through hole 210a from the lateral liquid bath B melting groove 201
Internal face extend.
In the figure of each centering of 3 pairs of electrode body 208, the electrode body of inner side is not shown.3 pairs of electrode body 208 each to wear
Cross melten glass MG mutually to mode be arranged in through hole 210a.Each pair of electrode body 208 becomes anelectrode and negative electrode
And flow through electric current at this interelectrode melten glass MG.Joule heat, melten glass is produced at melten glass MG by this energising
MG is heated by the Joule heat self sent.In melting groove 201, melten glass MG is heated to such as more than 1500 DEG C.?
The melten glass MG of heating is delivered to defecator 202 by glass supply pipe.
In the present embodiment, be provided with 3 pairs of electrode body 208 melting in groove 201, but may also set up 1 to, 2 to or
Person 4 is to above electrode body.That is, in present embodiment, each at least one pair of through hole 210a, 210a is used to be provided with electricity
The melting groove 201 of polar body 208, and melt being accommodated in the glass melted in groove 201.
Hereinafter, use and vertical direction is set to z-axis and xyz orthogonal coordinate system that x/y plane is horizontal plane illustrates.As
As shown in Fig. 3, melt groove 201 liquid bath B to wall 210,210 be set to parallel with yz plane.
Fig. 4 is to melt the sectional view parallel with xz plane near the electrode body 208 of groove 201 and through hole 210a.Fig. 5 is
The sectional view parallel with x/y plane near electrode body 208 and through hole 210a.Fig. 6 is to observe electrode body 208 from x direction and pass through
Enlarged drawing is faced near through hole 210a.Fig. 4 to Fig. 6 omits the diagram of the adapter etc. being arranged in electrode body 208.
Electrode body 208 is by banding in the way of a direction extension by electrode body key element 208a of multiple strips
Complex, each of electrode body key element 208a is passed through electricity to melten glass MG.The front end face 208f of electrode body 208 and rear end face
208b is constituted in the way of vertical with the central shaft C1 of electrode body 208.In Fig. 4 to Fig. 6, by longitudinally 4 sections, the total of horizontal 4 row
16 electrode body key elements 208a are constituted.The electrode body 208 as complex comprising electrode body key element 208a be not limited to as
Be made up of 16 electrode body key elements 208a of total of longitudinally 4 sections, horizontal 4 row as present embodiment, add up to radical, longitudinal hop count,
Laterally line number limits the most especially.Such as, electrode body 208 also can be made up of 1 electrode body key element 208a.
As shown in Figures 4 and 5, the wall 210 melting groove 201 is structure using the refractory body component lamination as refractory brick
Become.Wall 210 is provided with through hole 210a.The wall of the central shaft C1 and through hole 210a of through hole 210a is set to and x-axis
Parallel.That is, the wall of the central shaft C1 and through hole 210a of through hole 210a is set perpendicularly to the wall parallel with yz plane
210。
Electrode body 208 is inserted and is arranged in this through hole 210a.That is, electrode body 208 extends to the internal face of liquid bath B, and
By the refractory body component around the electrode body 208 constituting wall 210, specifically by the lower section in the figure being positioned at electrode body 208, on
The refractory body component of side and side keeps.In Fig. 4 and Fig. 5, the central shaft of the central shaft C2 and through hole 210a of electrode body 208
C1 is consistent.
Electrode body 208 makes the position alignment internal face (inner surface of wall 210) in liquid bath B of front end face 208f when arranging
Position P0.That is, the front end face 208f of electrode body 208 and the internal face melting groove 201 adjoin without jump.That is, front end face
208f can configure at grade with the internal face of liquid bath B.It addition, the front end face 208f of electrode 208 also can be with from through hole
To the inner side of liquid bath B, prominent mode to a certain degree configures 210a, but by making the position alignment of front end face 208f in liquid bath B's
The position P0 of internal face, it is possible to decrease the erosion of electrode body 208 and composition melt the erosion of the refractory body component of the wall 210 of groove 201.
Electrode body 208 causes the leading section contacted with melten glass MG to be melt because melten glass MG is carried out electrified regulation
Melt glass MG corrode and wear and tear, as shown in Figures 4 and 5 as, the position of front end face 208f is to the position P0 of the internal face of relatively liquid bath B
More by melting the outside retrogressing of groove 201.So, if the front end face 208f of electrode body 208 becomes from the inwall of liquid bath B towards passing through
Through hole 210a inner side depression state, the most not only to electrode body 208,208 between voltage rise, near electrode body 208
Wall 210 be the most easily etched.Therefore, melt groove 201 outside be provided with in order to by electrode body 208 to melten glass MG side
To the pressing structure 220 of press-in.
Pressing structure (pressing member) 220 includes the Horizontal clamp 221 being arranged in the rear end face 208b of electrode body 208 and hangs down
Straight fixture 222, pressing power is made to act on the worm screw jack 223 of vertical clamp 222, reference plane setting device 224 and measure rule
225。
As shown in Figure 6, Horizontal clamp 221 frame is in all electrode body key elements 208a adjacent in the horizontal direction, and divides
It is not arranged on to lowermost each section of the uppermost of electrode body key element 208a.Vertical clamp 222 frame is in vertically side
In each of adjacent Horizontal clamp 221.
As shown in Figures 4 and 5, worm screw jack 223 includes flange part 223a, pressing axis 223b and drive division 223c.
Flange part 223a is can be fixed on the optional position of the tectosome of the not shown frame-like being arranged at the outside melting groove 201
Mode is arranged, can by the adjustment such as bolt and electrode body 208 to the gradient in face.Pressing axis 223b is set to and flange part
223a is vertical, and is formed with trapezoidal thread at outer peripheral face.Drive division 223c includes having cogged worm gear.Gear is in inner peripheral portion shape
Become to have trapezoidal thread to be screwed together in the trapezoidal thread of pressing axis 223b.At drive division 223c, not shown handle is installed, when making
During rotatable handle, the gear of worm gear rotates, the pressing axis 223b side that edge is vertical with flange part 223a by the effect of trapezoidal thread
March forward and retreat.Worm screw jack 223 is by making when the front end making pressing axis 223b is connected to vertical clamp 222
Pressing axis 223b is advanced to x-axis negative direction, and makes to act on electrode body by pressure via vertical clamp 222 and Horizontal clamp 221
The rear end face 208b of 208.In present embodiment, worm screw jack 223 is provided with 1, but arranging of worm screw jack 223 counts also
Can be more than 2.
As shown in Figure 4, reference plane setting device 224 can use the most commercially available laser marker or laser leveling
Instrument.Reference plane setting device 224 is with by can sky around along vertical and horizontal plane irradiating laser light from body 224a
Between set the mode of datum level or datum line and constitute.In present embodiment, as shown in Figure 3 as, by with melt groove 201 wall
210 is parallel and leave the vertical face of specific range D0 with wall 210 and be set as datum level R.That is, datum level R is set as and yz plane
Parallel.Additionally, the central shaft C1 of the through hole 210a being arranged on the wall 210 melting groove 201 and the wall of through hole 210a, if
It is set to vertical with wall 210.Therefore, datum level R is perpendicular to central shaft C1 and the wall of through hole 210a of through hole 210a.Measure
Rule (determinator) 225 is the rule that can measure the distance between 2, measures the arbitrfary point on the rear end face 208b of electrode body 208 and base
The distance of quasi-face R.
As shown in Figures 4 and 5, electrode body 208 is inserted into the wall 210 being arranged at the liquid bath B melting groove 201 with leading section
On through hole 210a in, and rearward end from through hole 210a to the state configuration protruding outside melting groove 201.In electrode body
The lower section of the rearward end of 208, be provided with by melt groove 201 electrode body 208 protruding outside at least some of from pass through
The electrode support table 230 that the z direction that the central shaft C1 of through hole 210a intersects is supported.
As shown in Fig. 4 and Fig. 6, electrode support table 230 includes pedestal portion 231, lifting unit 232, set screw 233, absolutely
Edge 234 and electrode support sector 235.Pedestal portion 231 supports lifting unit 232 via set screw 233.Lifting unit 232 is with logical
Overregulate the mode that screw 233 lifts along vertical direction (z direction) to constitute.Lifting unit 232 is configured with and comprises insulator
Insulation division 234.Insulation division 234 is configured with the electrode support sector 235 comprising refractory brick.Electrode support table 230 is by regulation
It is suitable height that screw 233 makes lifting unit 232 lift and make electrode support sector 235, thus so that the central shaft of electrode body 208
C2 becomes the mode supporting electrode body 208 of level.
Secondly, the effect to present embodiment illustrates.
In the melting step (ST1) of the manufacture method of the glass substrate shown in Fig. 1, in the liquid bath B's at melting groove 201
After the through hole 210a of wall 210 configures electrode body 208, supply frit in melting groove 201.Frit is by combustion
The flame that burner 206 sends heats and melts, and melten glass MG accumulates in liquid bath B.Thereafter, use electrode body 208 to molten
Melt glass MG and carry out electrified regulation.When the long-term electrified regulation persistently carrying out melten glass MG, the leading section quilt of electrode body 208
Melten glass MG corrodes.Thus, as shown in Figures 4 and 5 as, the position of the front end face 208f of electrode body 208 is from initial position
P0 retreats to the inner side of through hole 210a.
So, at the melting groove 201 by being provided with the electrode body 208 comprising stannum oxide at least one pair of through hole 210a
In the method that middle received glass melts, it is necessary to by the electrode body 208 of short and smallization melten glass MG in melting groove 201
The step that direction extrudes.Hereinafter, carry out by the step that electrode body 208 extrudes to the melten glass MG direction melted in groove 201
Explanation.
Fig. 7 is the sectional view parallel with xz plane, and (a) is the sectional view of the periphery of the electrode body 208 before representing press-in,
B () is the sectional view of the periphery of the electrode body 208 after representing press-in.Fig. 8 is the sectional view parallel with x/y plane, and (a) is to represent
The sectional view of the periphery of the electrode body 208 before press-in, (b) is the sectional view of the periphery of the electrode body 208 after representing press-in.Separately
Outward, Fig. 7 omits the diagram of electrode support table 230.
As shown in (a) of Fig. 7, electrode body 208, in vertical, exists in which that mandrel C2 is relative to through hole 210a's
The situation that central shaft C1 tilts.Additionally, as shown in (a) of Fig. 8, electrode body 208, in horizontal plane, exists in which mandrel C2 phase
When the central shaft C1 of through hole 210a tilts.
In present embodiment, by the central shaft C2 of the electrode body 208 in xz plane (vertical face) relative to through hole 210a
The gradient of central shaft C1 be set to tilted upward degree, and by the central shaft C2 phase of the electrode body 208 in x/y plane (horizontal plane)
Gradient for the central shaft C1 of through hole 210a is set to lateral inclination.It addition, in the xz plane shown in Fig. 7, at electricity
The gradient of the central shaft C2 of polar body 208 be just in the case of, can say that the central shaft C2 of electrode body 208 is relative to through hole 210a
Central shaft C1 or x-axis be inclined upwardly, in the gradient of central shaft C2 of electrode body 208 in the case of negative, electrode can be said
The central shaft C2 of the body 208 central shaft C1 relative to through hole 210a or x-axis are downward-sloping.Additionally, put down at the xy shown in Fig. 8
In face, in the case of the gradient of the central shaft C2 of electrode body 208 is just, can say the central shaft C2 of electrode body 208 relative to
The central shaft C1 of through hole 210a or x-axis are tilted to the right, and the gradient at the central shaft C2 of electrode body 208 is negative situation
Under, can say that the central shaft C2 of the electrode body 208 central shaft C1 relative to through hole 210a or x-axis are tilted to the left.
The reason tilted as the central shaft C2 of electrode body 208 as the so central shaft C1 relative to through hole 210a, deposits
Such as by the thermal expansion of wall 210 caused by the temperature rising of melting groove 201, the deadweight of rearward end of electrode body 208, worm screw thousand
The not shown tectosome of the flange part 223a of fixing bad, the fixing worm screw jack 223 of the flange part 223a on jin top 223
The situations such as warpage.
If it is when the central shaft C2 of the electrode body 208 central shaft C1 relative to through hole 210a tilts, uncomfortable
Electrode body 208 is just extruded by the pressing direction of local determining electrode body 208 to melten glass MG direction, then can be in electrode body 208
And produce bigger frictional force between through hole 210a, and cause the power that the press-in needs of electrode body 208 are bigger.If at this shape
Under state, electrode 208 is pressed in through hole 210a, then has the wall 210 of the liquid bath B melting groove 201 to be damaged by bigger power
Misgivings.
Thus, in present embodiment, the electrode body 208 of short and smallization is being constructed 220 in melting groove 201 by pressing
Melten glass MG direction when extruding, implement to measure the rear end face 208b central shaft relative to through hole 210a of electrode body 208
The determination step of the gradient of C1.
Specifically, as shown in (a) of Fig. 7, after the multiple Site Determination datum level R in z direction and electrode body 208
The distance in the x direction between end face 208b.In present embodiment, the front end of mensuration rule 225 is made to be connected to the rear end of electrode body 208
Face 208b, uses level indicator or reference plane setting device 224 to remain parallel with x-axis by mensuration rule 225.In this condition, read
Go out the scale measuring rule 225 being irradiated the laser light representing datum level R from reference plane setting device 224, measure electrode with this
The distance in the x direction between the rear end face 208b and datum level R of body 208.Carry out this step at multiple positions in z direction, and survey
Distance D1 in x direction between the rear end face 208b and datum level R of fixed electrode body 208, D2, after thus obtaining electrode body 208
End face 208b gradient in xz face.It addition, the distance in the x direction between the rear end face 208b and datum level R of electrode body 208
Mensuration, preferably carry out with upper bit at 3.
Herein, the rear end face 208b of electrode body 208 is set to vertical with the central shaft C2 of electrode body 208.Additionally, through hole
The central shaft C1 of 210a is parallel with x-axis.Therefore, ask according to the gradient of the rear end face 208b of the electrode body 208 in xz plane
Go out the gradient of the central shaft C2 of electrode body 208 in xz plane, and then obtain the central shaft C2 of electrode body 208 in xz plane
The gradient of the central shaft C1 relative to through hole 210a.
Similarly, as shown in Fig. 8 (a), the multiple mensuration datum level R in y direction and the rear end face of electrode body 208
The distance in the x direction between 208b.In present embodiment, such as, the front end of mensuration rule 225 is made to be connected to the rear end of electrode body 208
The left end of face 208b and right-hand member, and measure the x direction between the rear end face 208b of electrode body 208 and datum level R distance D3,
D4.Thus, obtain the gradient of the rear end face 208b of electrode body 208 in x/y plane, and then obtain the electrode body in x/y plane
The gradient of the central shaft C2 of the 208 central shaft C1 relative to through hole 210a.
So, after measuring the gradient of the electrode body 208 central shaft C1 relative to through hole 210a, implement based on survey
Determine the measurement result obtained in step and determine to utilize the rear end face of pressing structure (pressing member) 220 pressing electrode body 208
The deciding step in the direction of 208b.In deciding step, preferably to reduce the side of the gradient of the rear end face 208b of electrode body 208
Formula determines pressing direction.Additionally, in deciding step, determine pressing direction and the rear end face 208b of rear end face 208b the most in the lump
Pressing position.
Specifically, as shown in (a) of Fig. 7, determine to utilize the rear end face of pressing structure 220 pressing electrode body 208
The direction of 208b.In present embodiment, in the same manner as the situation of the gradient of the rear end face 208b measuring electrode body 208, such as Fig. 7
As shown in (a) and Fig. 8 (a), by measuring the convex of the rule 225 multiple Site Determination worm screw jack 223 in z direction and y direction
Distance d1 between edge 223a and datum level R, d2, d3, d4, and obtain the inclination relative to datum level R of flange part 223a
Degree.It addition, the mensuration of the distance between flange part 223a and datum level R, preferably carry out with upper bit at 3.
Secondly, in the way of making flange part 223a parallel with datum level R, adjust flange part by not shown set screw
The gradient of 223a.Thus, the side of the rear end face 208b of the pressing axis 223b pressing electrode body 208 of worm screw jack 223 is utilized
Parallel with x-axis to becoming.That is, the pressing direction of the rear end face 208b of electrode body 208 is parallel with the central shaft C1 of through hole 210a.
In addition, it is possible to as above determine pressing position together with decision pressing direction.Or, it is possible to do not press
The decision in direction and carry out the decision of pressing position.The decision of pressing position can be carried out in such a way.In electrode body 208
In the case of the central shaft C2 central shaft C1 relative to through hole 210a is downward-sloping, makes worm screw jack 223 move, and make profit
Pressing position relatively central shaft C2 more top with the rear end face 208b of pressing axis 223b pressing electrode body 208.Otherwise, in electrode body
In the case of the central shaft C2 of the 208 central shaft C1 relative to through hole 210a is inclined upwardly, worm screw jack 223 is made to move,
And make to utilize the pressing position relatively central shaft C2 of the rear end face 208b of pressing axis 223b pressing electrode body 208 further below.Additionally, such as
As shown in (a) of Fig. 8, in the situation that the central shaft C2 of the electrode body 208 central shaft C1 relative to through hole 210a is tilted to the right
Under, make worm screw jack 223 move, and make to utilize the pressing position of the rear end face 208b of pressing axis 223b pressing electrode body 208
Relatively central shaft C2 more left.Otherwise, it is tilted to the left at the central shaft C2 of the electrode body 208 central shaft C1 relative to through hole 210a
In the case of, make worm screw jack 223 move, and make to utilize the rear end face 208b of pressing axis 223b pressing electrode body 208 by
Pressure relatively central shaft C2 more right, position.
That is, the pressing position of the rear end face 208b of pressing structure 220 pressing electrode body 208 is utilized, with electrode body 208
The side that the central shaft C1 relative to through hole 210a of the central shaft C2 with electrode body 208 tilts it is determined as on the basis of central shaft C2
To contrary side.
As above the rear end face 208b of determining electrode body 208 pressing position and/or pressing direction after, implement to pass through
Pressing member 220 presses the pressing step of the rear end face 208b of electrode body 208.Specifically, pressing by worm screw jack 223
Last item 223b and press the rear end face 208b of electrode body 208 via Horizontal clamp 221 and vertical clamp 222.
Now, as shown in (a) of Fig. 7 and (a) of Fig. 8, in present embodiment, the rear end face 208b's of electrode body 208
Pressing direction is parallel with the central shaft C1 of through hole 210a.Therefore, even if at the central shaft C2 of electrode body 208 relative to through hole
In the case of the central shaft C1 of 210a tilts, by electrode body 208 is pressed into along the central shaft C1 of through hole 210a, it is possible to reduce
The gradient of the central shaft C2 of electrode body 208.Therefore, it is possible to decrease electrode body when electrode body 208 is pressed in through hole 210a
Frictional resistance between 208 and through hole 210a.
Additionally, in present embodiment, the pressing position of pressing member 220 is on the basis of the central shaft C2 of electrode body 208,
It is decided to be the side in opposite direction that the central shaft C1 relative to through hole 210a of the central shaft C2 with electrode body 208 tilts.Cause
This, when by pressing structure 220 pressing electrode body 208, act on the central shaft C2 phase such as making electrode body 208 to electrode body 208
For electrode body 208 through hole 210a central shaft C1 gradient reduce as revolving force.Therefore, even if in electrode body
In the case of the central shaft C2 of the 208 central shaft C1 relative to through hole 210a tilts, along with by electrode body 208 to melten glass
MG direction extrudes, and can reduce the gradient of the central shaft C1 of the electrode body 208 central shaft C1 relative to through hole 210a.By
This, as shown in Fig. 7 (b) and Fig. 8 (b), extruding electrode body 208 until before electrode body 208 to melten glass MG direction
Time till the position P0 of end face 208f arrival target, can be with the central shaft C2 of the central shaft C1 of through hole 210a Yu electrode body 208
Electrode body 208 is pressed in through hole 210a by consistent mode.Thus, it is possible to decrease between electrode body 208 and through hole 210a
Frictional resistance, thus can prevent the wall 210 melting the liquid bath B of groove 201 from damaging because of the press-in of electrode body 208, melting can be used
Groove 201 melts glass steadily in the long term.
Additionally, be provided with electrode support table 230 in present embodiment, this electrode support table 230 is by pressing structure 220
Pressing electrode body 208 rear end face time, by melt groove 201 electrode body 208 protruding outside at least some of from pass through
The direction that the central shaft C1 of through hole 210a intersects is supported.Therefore, when electrode body 208 is extruded to melten glass MG direction, can
Prevent the central shaft C2 of the electrode body 208 central shaft C1 relative to through hole 210a downward-sloping.Additionally, adjustable ground arranges electricity
The height of pole support table 230, therefore can suitably set the height of electrode support table 230, thus can more efficiently prevent from electrode
Body 208 tilts because of deadweight.
As described above, according to the melting method of glass, the manufacture method of glass substrate and the glass of present embodiment
The fusing device of glass, it is possible to decrease the electrode body 208 when electrode body 208 being pressed in the through hole 208a melting groove 201 is with through
Frictional resistance between the 208a of hole, thus melting groove 201 can be used to melt glass steadily in the long term.
It addition, the present invention is not limited to above-mentioned embodiment, it is possible to enter without departing from the spirit and scope of the invention
The various improvement of row or change.
Such as, the press-in of electrode body 208 can be divided into be repeated several times the step of the gradient being measured rear end face 208b with
Determine pressing position or the step in pressing direction of pressing structure 220.Thus, the central shaft C1 of electrode body 208 can simultaneously be measured
The gradient of the central shaft C1 relative to through hole 210a, one is carried out in the face of pressing position and the pressing direction of pressing structure 220
Inching.
In addition, it is possible to the most suitably determine in the degree of gradient of the rear end face 208b according to electrode body 208
After pressing position, do not change pressing direction and directly by pressing structure 220, this electrode body 208 is pressed into through hole 210a
In.
In addition, it is possible to do not change pressing position and only pressing direction is determined as optimum orientation.In this case, pressing side
To being to incline towards the central shaft C1 relative to through hole 210a of the central shaft C2 with the electrode body 208 in xz plane and x/y plane
The mode in oblique direction in opposite direction sets.Thus, make the central shaft C2 of reduction electrode body 208 relative to through hole 210a's
The revolving force of the gradient of central shaft C1 acts on electrode body 208, thus can reduce the central shaft C2 of electrode body 208 relative to passing through
The gradient of the central shaft C1 of through hole 210a.
As long as the pressing direction of the rear end face 208b of electrode body 208 is the inclining of rear end face 208b that can reduce electrode body 208
The direction of gradient, the most also can not be parallel with the central shaft C1 of through hole 210a.As such as shown in (a) of Fig. 7, in electrode body
The central shaft C2 of the 208 central shaft C1 relative to through hole 210a or x-axis downward-sloping in the case of, utilize worm screw jack
The pressing direction of the rear end face 208b of the pressing axis 223b pressing electrode body 208 of 223, also can be to determine in the way of oblique upper
Pressing direction.Otherwise, it is inclined upwardly at central shaft C1 relative to through hole 210a of the central shaft C2 of electrode body 208 or x-axis
In the case of, utilize the pressing direction of the rear end face 208b of the pressing axis 223b pressing electrode body 208 of worm screw jack 223, also
Can determine to press direction in the way of obliquely downward.Additionally, as shown in (a) of Fig. 8, at the central shaft C2 of electrode body 208
In the case of central shaft C1 relative to through hole 210a or x-axis are tilted to the right, utilize the pressing axis of worm screw jack 223
The pressing direction of the rear end face 208b of 223b pressing electrode body 208, also can be to determine pressing direction in the way of oblique left.Instead
It, in the case of central shaft C1 relative to through hole 210a of the central shaft C2 of electrode body 208 or x-axis are tilted to the left, profit
The pressing direction of the rear end face 208b of electrode body 208 is pressed by pressing axis 223b of worm screw jack 223, also can be with towards the rightest
The mode of side determines to press direction.The side in opposite direction that direction is determined as tilting will be pressed with electrode body 208 as so
To, the revolving force of reduction gradient can be made to act on electrode body 208, thus the gradient of electrode body 208 can be reduced.
Additionally, in the above-described embodiment, pressing structure 220 is set to press via Horizontal clamp 221 and vertical clamp 222
The composition of the rear end face 208b of electrode body 208, but such as it is used as the integral part of fixture of cancellate fixture or tabular
The rear end face 208b of pressing electrode body 208.
Additionally, in the above-described embodiment, illustrate to use the example measuring rule 225 as determinator, but as long as being can be
Distance person between multiple mensuration datum level R and the rear end face 208b of electrode body, then be used as optical profile type etc. contactless
Range sensor as determinator.In addition, it is possible to by arranging acceleration transducer at the rear end face of Horizontal clamp 221, and
Use this acceleration transducer to measure acceleration of gravity, and obtain the gradient of the rear end face of electrode.
Additionally, in the above-described embodiment, electrode support table 230 is set to the composition of supporting electrode body 208 from below.So
And, as long as being by electrode body 208 protruding outside at least some of from the central shaft with through hole 210a melting groove 201
The composition that the direction that C1 intersects is supported, it indicates that the direction of electrode body 208 is not particularly limited.Such as, it is possible to by electrode body 208
Rearward end from support suspended above or from tilted direction support.
[industrial applicability]
The method of the present invention, when manufacturing glass substrate by shaping molten glass, can particularly advantageously carry out glass
Melt step.
[explanation of symbol]
201 melt groove
208 electrode body (electrode)
208b rear end face
210a through hole
220 pressings structure (pressing member)
225 determinators
C1, C2 central shaft
MG melten glass
Claims (4)
1. a melting method for glass, it is the melting groove by being provided with the electrode comprising stannum oxide at least one pair of through hole
The method that middle received glass melts, it is characterised in that:
When the described electrode of short and smallization melten glass direction in described melting groove being extruded by pressing member, so that
The mode that the gradient of the rear end face of described electrode reduces presses the rear end face of described electrode by described pressing member, to reduce
Frictional resistance between described through hole and described electrode.
The melting method of glass the most according to claim 1, wherein,
At least some of of described electrode protruding outside to described melting groove is being handed over from the central shaft with described through hole
Under the state that the direction of fork is supported, press the rear end face of described electrode.
The melting method of glass the most according to claim 1 and 2, wherein,
Described electrode is the complex of multiple electrode banding.
4. the manufacture method of a glass substrate, it is characterised in that: it comprises the glass according to any one of claims 1 to 3
Melting method.
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| JP2012-218822 | 2012-09-28 | ||
| JP2012218822 | 2012-09-28 | ||
| CN201380003757.XA CN103917498B (en) | 2012-09-28 | 2013-09-24 | The fusing device of the melting method of glass, the manufacture method of glass substrate and glass |
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| Application Number | Title | Priority Date | Filing Date |
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| CN201380003757.XA Division CN103917498B (en) | 2012-09-28 | 2013-09-24 | The fusing device of the melting method of glass, the manufacture method of glass substrate and glass |
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| CN201380003757.XA Active CN103917498B (en) | 2012-09-28 | 2013-09-24 | The fusing device of the melting method of glass, the manufacture method of glass substrate and glass |
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| JP6722021B2 (en) * | 2016-03-31 | 2020-07-15 | ＡｖａｎＳｔｒａｔｅ株式会社 | Glass substrate manufacturing method and glass melting apparatus |
| CN112805250A (en) | 2018-09-06 | 2021-05-14 | 康宁公司 | Smelting furnace electrode carrying device |
Citations (3)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| JP2003292323A (en) * | 2002-04-01 | 2003-10-15 | Nippon Electric Glass Co Ltd | Glass-fusing furnace and glass-fusing method |
| CN101381197A (en) * | 2008-10-20 | 2009-03-11 | 河南安飞电子玻璃有限公司 | Fluxing apparatus of LCD glass melting furnace |
| JP2012162422A (en) * | 2011-02-08 | 2012-08-30 | Nippon Electric Glass Co Ltd | Method for manufacturing glass article and glass melting furnace |
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| EP2530057B1 (en) * | 2011-05-31 | 2019-04-10 | Corning Incorporated | Glass melt handling equipment and method |
| JP6002525B2 (en) * | 2011-09-30 | 2016-10-05 | ＡｖａｎＳｔｒａｔｅ株式会社 | Manufacturing method of glass plate |
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Patent Citations (3)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| JP2003292323A (en) * | 2002-04-01 | 2003-10-15 | Nippon Electric Glass Co Ltd | Glass-fusing furnace and glass-fusing method |
| CN101381197A (en) * | 2008-10-20 | 2009-03-11 | 河南安飞电子玻璃有限公司 | Fluxing apparatus of LCD glass melting furnace |
| JP2012162422A (en) * | 2011-02-08 | 2012-08-30 | Nippon Electric Glass Co Ltd | Method for manufacturing glass article and glass melting furnace |
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| Publication number | Publication date |
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| JPWO2014050826A1 (en) | 2016-08-22 |
| WO2014050826A1 (en) | 2014-04-03 |
| JP5706544B2 (en) | 2015-04-22 |
| CN103917498A (en) | 2014-07-09 |
| JP5941175B2 (en) | 2016-06-29 |
| JP2015155369A (en) | 2015-08-27 |
| CN103917498B (en) | 2016-07-06 |
| CN106007340B (en) | 2018-10-12 |
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