CN102753492A - Low run-out edge rollers for use with glass ribbons - Google Patents
Low run-out edge rollers for use with glass ribbons Download PDFInfo
- Publication number
- CN102753492A CN102753492A CN2011800093867A CN201180009386A CN102753492A CN 102753492 A CN102753492 A CN 102753492A CN 2011800093867 A CN2011800093867 A CN 2011800093867A CN 201180009386 A CN201180009386 A CN 201180009386A CN 102753492 A CN102753492 A CN 102753492A
- Authority
- CN
- China
- Prior art keywords
- edge
- glass ribbon
- glass
- wheel assembly
- rollers wheel
- Prior art date
- Legal status (The legal status is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the status listed.)
- Pending
Links
- 239000011521 glass Substances 0.000 title claims abstract description 178
- 239000000919 ceramic Substances 0.000 claims abstract description 12
- 230000000712 assembly Effects 0.000 claims abstract description 4
- 238000000429 assembly Methods 0.000 claims abstract description 4
- 238000000034 method Methods 0.000 claims description 31
- 238000010009 beating Methods 0.000 claims description 24
- 230000013011 mating Effects 0.000 claims description 15
- 239000005357 flat glass Substances 0.000 claims description 14
- 230000008569 process Effects 0.000 claims description 12
- 238000004519 manufacturing process Methods 0.000 claims description 10
- 238000005516 engineering process Methods 0.000 claims description 8
- 230000004927 fusion Effects 0.000 claims description 8
- 238000005520 cutting process Methods 0.000 claims description 4
- 230000003321 amplification Effects 0.000 abstract description 4
- 238000010276 construction Methods 0.000 abstract description 4
- 238000003199 nucleic acid amplification method Methods 0.000 abstract description 4
- 239000007789 gas Substances 0.000 description 20
- 238000000465 moulding Methods 0.000 description 12
- 239000000463 material Substances 0.000 description 11
- 230000008901 benefit Effects 0.000 description 6
- 230000000694 effects Effects 0.000 description 6
- 230000007246 mechanism Effects 0.000 description 5
- 230000015572 biosynthetic process Effects 0.000 description 4
- 230000008859 change Effects 0.000 description 4
- 238000009826 distribution Methods 0.000 description 4
- 238000003280 down draw process Methods 0.000 description 4
- 230000007704 transition Effects 0.000 description 4
- 239000011324 bead Substances 0.000 description 3
- 239000004744 fabric Substances 0.000 description 3
- IJGRMHOSHXDMSA-UHFFFAOYSA-N Atomic nitrogen Chemical compound N#N IJGRMHOSHXDMSA-UHFFFAOYSA-N 0.000 description 2
- 230000009471 action Effects 0.000 description 2
- 238000001816 cooling Methods 0.000 description 2
- 239000012530 fluid Substances 0.000 description 2
- 238000010438 heat treatment Methods 0.000 description 2
- 238000012423 maintenance Methods 0.000 description 2
- 238000002844 melting Methods 0.000 description 2
- 230000008018 melting Effects 0.000 description 2
- 230000004048 modification Effects 0.000 description 2
- 238000012986 modification Methods 0.000 description 2
- 230000009467 reduction Effects 0.000 description 2
- 238000007634 remodeling Methods 0.000 description 2
- 230000004044 response Effects 0.000 description 2
- 239000000758 substrate Substances 0.000 description 2
- OKTJSMMVPCPJKN-UHFFFAOYSA-N Carbon Chemical compound [C] OKTJSMMVPCPJKN-UHFFFAOYSA-N 0.000 description 1
- QCWXUUIWCKQGHC-UHFFFAOYSA-N Zirconium Chemical compound [Zr] QCWXUUIWCKQGHC-UHFFFAOYSA-N 0.000 description 1
- 238000005299 abrasion Methods 0.000 description 1
- QVGXLLKOCUKJST-UHFFFAOYSA-N atomic oxygen Chemical compound [O] QVGXLLKOCUKJST-UHFFFAOYSA-N 0.000 description 1
- 229910010293 ceramic material Inorganic materials 0.000 description 1
- 238000004140 cleaning Methods 0.000 description 1
- 230000019771 cognition Effects 0.000 description 1
- 230000003247 decreasing effect Effects 0.000 description 1
- 230000002950 deficient Effects 0.000 description 1
- 238000010586 diagram Methods 0.000 description 1
- 230000000916 dilatatory effect Effects 0.000 description 1
- 230000002349 favourable effect Effects 0.000 description 1
- 239000000835 fiber Substances 0.000 description 1
- 239000002657 fibrous material Substances 0.000 description 1
- 230000006870 function Effects 0.000 description 1
- 230000009477 glass transition Effects 0.000 description 1
- 229910002804 graphite Inorganic materials 0.000 description 1
- 239000010439 graphite Substances 0.000 description 1
- 230000001771 impaired effect Effects 0.000 description 1
- 239000012212 insulator Substances 0.000 description 1
- 239000004973 liquid crystal related substance Substances 0.000 description 1
- 230000007774 longterm Effects 0.000 description 1
- 229910052757 nitrogen Inorganic materials 0.000 description 1
- TWNQGVIAIRXVLR-UHFFFAOYSA-N oxo(oxoalumanyloxy)alumane Chemical compound O=[Al]O[Al]=O TWNQGVIAIRXVLR-UHFFFAOYSA-N 0.000 description 1
- 239000001301 oxygen Substances 0.000 description 1
- 229910052760 oxygen Inorganic materials 0.000 description 1
- 230000035515 penetration Effects 0.000 description 1
- 239000012858 resilient material Substances 0.000 description 1
- 238000005096 rolling process Methods 0.000 description 1
- 238000007665 sagging Methods 0.000 description 1
- 238000007789 sealing Methods 0.000 description 1
- 238000000926 separation method Methods 0.000 description 1
- 238000007493 shaping process Methods 0.000 description 1
- 238000004088 simulation Methods 0.000 description 1
- 238000012546 transfer Methods 0.000 description 1
- 238000013519 translation Methods 0.000 description 1
- 229910052726 zirconium Inorganic materials 0.000 description 1
Images
Classifications
-
- C—CHEMISTRY; METALLURGY
- C03—GLASS; MINERAL OR SLAG WOOL
- C03B—MANUFACTURE, SHAPING, OR SUPPLEMENTARY PROCESSES
- C03B17/00—Forming molten glass by flowing-out, pushing-out, extruding or drawing downwardly or laterally from forming slits or by overflowing over lips
- C03B17/06—Forming glass sheets
- C03B17/068—Means for providing the drawing force, e.g. traction or draw rollers
-
- C—CHEMISTRY; METALLURGY
- C03—GLASS; MINERAL OR SLAG WOOL
- C03B—MANUFACTURE, SHAPING, OR SUPPLEMENTARY PROCESSES
- C03B17/00—Forming molten glass by flowing-out, pushing-out, extruding or drawing downwardly or laterally from forming slits or by overflowing over lips
- C03B17/06—Forming glass sheets
-
- C—CHEMISTRY; METALLURGY
- C03—GLASS; MINERAL OR SLAG WOOL
- C03B—MANUFACTURE, SHAPING, OR SUPPLEMENTARY PROCESSES
- C03B18/00—Shaping glass in contact with the surface of a liquid
- C03B18/02—Forming sheets
- C03B18/04—Changing or regulating the dimensions of the molten glass ribbon
- C03B18/06—Changing or regulating the dimensions of the molten glass ribbon using mechanical means, e.g. restrictor bars, edge rollers
-
- C—CHEMISTRY; METALLURGY
- C03—GLASS; MINERAL OR SLAG WOOL
- C03B—MANUFACTURE, SHAPING, OR SUPPLEMENTARY PROCESSES
- C03B35/00—Transporting of glass products during their manufacture, e.g. hot glass lenses, prisms
- C03B35/14—Transporting hot glass sheets or ribbons, e.g. by heat-resistant conveyor belts or bands
- C03B35/16—Transporting hot glass sheets or ribbons, e.g. by heat-resistant conveyor belts or bands by roller conveyors
-
- C—CHEMISTRY; METALLURGY
- C03—GLASS; MINERAL OR SLAG WOOL
- C03B—MANUFACTURE, SHAPING, OR SUPPLEMENTARY PROCESSES
- C03B35/00—Transporting of glass products during their manufacture, e.g. hot glass lenses, prisms
- C03B35/14—Transporting hot glass sheets or ribbons, e.g. by heat-resistant conveyor belts or bands
- C03B35/16—Transporting hot glass sheets or ribbons, e.g. by heat-resistant conveyor belts or bands by roller conveyors
- C03B35/165—Supports or couplings for roller ends, e.g. trunions, gudgeons
-
- C—CHEMISTRY; METALLURGY
- C03—GLASS; MINERAL OR SLAG WOOL
- C03B—MANUFACTURE, SHAPING, OR SUPPLEMENTARY PROCESSES
- C03B35/00—Transporting of glass products during their manufacture, e.g. hot glass lenses, prisms
- C03B35/14—Transporting hot glass sheets or ribbons, e.g. by heat-resistant conveyor belts or bands
- C03B35/16—Transporting hot glass sheets or ribbons, e.g. by heat-resistant conveyor belts or bands by roller conveyors
- C03B35/18—Construction of the conveyor rollers ; Materials, coatings or coverings thereof
-
- C—CHEMISTRY; METALLURGY
- C03—GLASS; MINERAL OR SLAG WOOL
- C03B—MANUFACTURE, SHAPING, OR SUPPLEMENTARY PROCESSES
- C03B35/00—Transporting of glass products during their manufacture, e.g. hot glass lenses, prisms
- C03B35/14—Transporting hot glass sheets or ribbons, e.g. by heat-resistant conveyor belts or bands
- C03B35/16—Transporting hot glass sheets or ribbons, e.g. by heat-resistant conveyor belts or bands by roller conveyors
- C03B35/18—Construction of the conveyor rollers ; Materials, coatings or coverings thereof
- C03B35/189—Disc rollers
Landscapes
- Chemical & Material Sciences (AREA)
- Engineering & Computer Science (AREA)
- Materials Engineering (AREA)
- Organic Chemistry (AREA)
- Mechanical Engineering (AREA)
- Re-Forming, After-Treatment, Cutting And Transporting Of Glass Products (AREA)
- Registering, Tensioning, Guiding Webs, And Rollers Therefor (AREA)
Abstract
Edge rollers (26) for glass ribbons (20) are disclosed in which the run-out generating portion of the roller's bearing assembly (50) is located inboard of the ribbon's edge, e.g., over the ribbon's edge portion (34). Such a location reduces the amplification of run-out which occurs with conventional edge roller constructions. By eliminating the amplification, run-out at the surface of the ribbon can, for example, be reduced from 1-3 mm to 0.05-0.15 mm. To withstand the elevated temperatures which exist inboard of the ribbon's edge, the edge roller assemblies can employ gas or ceramic bearings.
Description
The benefit of priority that No. the 61/304th, 890, the U.S. Provisional Patent Application that the application requires to submit on February 16th, 2010.
The field
The present invention relates to be used for the edge running roller of glass ribbon, and be specifically related to be used to reduce dancing method and apparatus by this running roller generation.
Background technology
A method that forms thin glass plate is that the drawing process through drawing glassribbons from the container of melten glass forms thin glass plate.This can for example pass through from the last drawing process of container (for example Fu Ke (Foucault) or section this (Colburn)) drawing glassribbons that makes progress, or through accomplishing from the down draw process (for example groove or molten mass) of the downward drawing glassribbons of molding usually.In case the formation glass ribbon is then from this each sheet glass of glass ribbon cutting.
In conventional drawing process, melten glass forms the glass ribbon that is included in the drawing chamber that is limited the guard shield around glass ribbon.Wherein, guard shield is used to keep the interior constant heating power environment in zone that limited the guard shield around glass ribbon.Running roller is to passing guard shield and near its edge, contacting with glass ribbon.These edge running rollers can be used for glass ribbon is applied traction force, so that glass ribbon is applied lateral pull, or only are the glass-guiding bands.Thereby, can apply turning force to running roller through motor, or running roller can be rotate freely and through the glass ribbon that descends running roller is applied turning force.Under any situation, running roller all rotates.
Producing running roller mechanism allows running roller from motion of glass contact zone level and/or catenary motion usually.Rolling axle move with the geometric tolerances that adapt to running roller, running roller beat and tolerance when moving changes and the normal change of thickness of glass.In addition, producing running roller mechanism allows running roller to move away from glass to be used to keep path, process to restart and other actual consideration usually.
Opposing is produced in the running roller supporting device the free-moving frictional force of edge running roller and is changed running roller usually and be applied to the power on the glass ribbon; This shows as undesired perturbation or STRESS VARIATION in the glass ribbon, and this can be solidified in the glass to the resilient material transit time from cohesive material when glass.Specifically, the kinematics of edge running roller can influence glass ribbon and from the geometrical shape and the stress homogeneity of the sheet glass of glass ribbon cutting.Any running roller rotates the motion that defective also can cause glass ribbon.Glass ribbon motion can for example have the amplitude of 1 to 3mm scope, but this interfere sheet glass form technology and influence its geometrical shape in transitional region, the glass in wherein drawing carries out the transition to elasticity from viscosity gradually.Will appreciate that from LCD glass experience and simulation to make glass ribbon motion minimum to obtain the importance of low-stress and high-precision Flatness.
Although common use comprises the high-quality material of high quality bearing assembly and makes the edge running roller; And beating of production system is not unusual height in the practice, is detectable and is prior for thinner, higher and wideer forming property from the dancing technogenic influence.Discuss like hereinafter; The present invention solves the level of flapping that existing edge running roller is had in the following manner: the source of beating is discerned in (1); And (2) provide such edge rollers wheel construction, and it eliminates this source and therefore can realize suitable intrinsicly beat but not using the running roller of the structure that discloses to compare beating of reduction degree with having of beating.
Running roller can be used for the glass ribbon of virtually any size or thickness although these reductions are beated, and they are especially favourable when glass ribbon rigidity is low.The process orientation that reduces rigidity comprises thinner product, wideer product and the process of Geng Gao.All these directions are all in the market requirement of seeking to meet thinner and wideer sheet glass, for example with as the relevant market requirement of sheet glass that is used as substrate in the demonstration products production such as liquid-crystal display (LCD).Thereby expection is along with technology for making glass continues the response market requirement, and the relevant advantage of edge rollers wheel construction that discloses with this paper can become more and more valuable.
Summary of the invention
According to first aspect, disclosed a kind of edge rollers wheel assembly (26) that is used for glass ribbon (20), comprising:
(A) supporting member (38), this supporting member (38) limits longitudinal axis (39);
(B) bearing assembly (50), this bearing assembly comprise generation dancing part; And
(C) head (36), this head (36) has the outside surface that comprises glass mating part (37);
Wherein:
(i) this head (36) is pivotally mounted to supporting member (38) through bearing assembly (50), and this rotation is carried out around longitudinal axis (39); And
(ii) the generation part of beating of the glass mating part (37) of head (36) and bearing assembly (50) is positioned at each position of axis (39) longitudinally, makes that roll assembly is between (26) usage period on the edge of, and each position is all in the edge of glass ribbon (20).
According to second aspect, disclose a kind of method of making sheet glass, this method comprises:
(A) use drawing process to produce glass ribbon (20); And
(B) from glass ribbon (20) cutting glass plate;
Wherein:
(i) this glass ribbon (20) has edge section (34);
(ii) step (A) comprises that the edge section (34) that makes glass ribbon contacts with the glass matching surface (37) of edge rollers wheel assembly (26);
(iii) this edge rollers wheel assembly (26) comprises bearing assembly (50); And
(iv) at least the generation dancing of bearing assembly (50) partly have the edge section (34) that is positioned at glass ribbon stride the glass ribbon position.
It is convenient that the Reference numeral that in to the above-mentioned summary of all respects of the present disclosure, uses has been merely the reader, and do not want also not should be understood to restriction scope of the present invention.More generally, it is understandable that above describe, in general terms and following detailed description all are example of the present invention, is for the understanding to the overall or framework of essence of the present invention and characteristic is provided.
Set forth in the additional feature and advantage of the present invention detailed description below, and to those skilled in the art, a part can from this explanation, become understand or through as be able to cognition in this example ground embodiment of the present invention.Comprise accompanying drawing so that further understanding of the present invention to be provided, accompanying drawing is included in this specification sheets and constitutes the part of this specification sheets.Should be understood that in the specification sheets with accompanying drawing in the of the present invention various characteristics that disclose can use and make up use separately.By non-restrictive example, various characteristics of the present invention capable of being combined are as following others.
According to the third aspect; The edge rollers wheel assembly of aspect 1 is provided; Wherein glass ribbon has the edge section; And the beating of the glass mating part of head and bearing assembly produces part and is positioned at each position of axis longitudinally, makes on the edge of roll assembly between the usage period, each position have be positioned at the edge section stride the glass ribbon position.
According to fourth aspect, the edge rollers wheel assembly of aspect 1 or 3 is provided, wherein:
(a) this assembly comprises second head and second bearing assembly, and this second head comprises the glass mating part, and second bearing assembly comprises generation dancing part;
(b) second head is pivotally mounted to supporting member through second bearing assembly, and this rotation is carried out around longitudinal axis; And
(c) the generation part of beating of the glass mating part of second head and second bearing assembly is positioned at each position of axis longitudinally, makes that roll assembly is between the usage period on the edge of, and each position is all in the edge of glass ribbon.
According to the 5th aspect; The edge rollers wheel assembly of aspect 4 is provided; Wherein glass ribbon has two edge sections; And each glass mating part is beated with each and is produced part and be positioned at the position of axis longitudinally, makes on the edge of roll assembly between the usage period, this position have be positioned at the edge section stride the glass ribbon position.
According to the 6th aspect, the edge rollers wheel assembly of arbitrary aspect among aspect 1 or the 3-5 is provided, wherein bearing assembly adopts air cushion.
According to the 7th aspect, the edge rollers wheel assembly of aspect 6 is provided, wherein the gas of air cushion is air.
According to eight aspect, the edge rollers wheel assembly of aspect 6 or aspect 7 is provided, wherein bearing assembly comprises the opposing head sub-component of axial-movement longitudinally.
According to the 9th aspect, the edge rollers wheel assembly of aspect 8 is provided, wherein sub-component adopts air cushion.
According to the tenth aspect, the edge rollers wheel assembly of arbitrary aspect among aspect 1 or the 3-9 is provided, wherein head is isolated to reduce assembly heat passage from glass ribbon between the usage period.
According to the tenth one side, the edge rollers wheel assembly of arbitrary aspect among aspect 1 or the 3-10 is provided, wherein the far-end of head comprises ceramic cap.
According to the 12 aspect, provide a kind of drawing process to produce the equipment of sheet glass through the production glass ribbon, this equipment comprises the edge rollers wheel assembly of arbitrary aspect among aspect 1 or the 3-11.
According to the 13 aspect, the equipment of aspect 12 is provided, this equipment comprises the second edge rollers wheel assembly of arbitrary aspect among aspect 1 or the 3-11, wherein equipment between the usage period two edge rollers wheel assemblies cooperate with the two opposite sides of glass ribbon.
According to the 14 aspect, the method for aspect 2 is provided, wherein bearing assembly adopts air cushion and this method to comprise to make gas pass the edge rollers wheel assembly to form air cushion.
According to the 15 aspect, the method for aspect 14 is provided, wherein bearing assembly comprises the sub-component of striding the glass ribbon motion of the glass matching surface of opposing edge rollers wheel assembly.
According to the 16 aspect, the method for aspect 15 is provided, wherein this sub-component adopts air cushion and this method to comprise to make gas pass the edge rollers wheel assembly to form air cushion.
According to the 17 aspect, the method for arbitrary aspect among aspect 2 or the 14-16 is provided, wherein the edge rollers wheel assembly comprises ceramic end cap, this pottery end cap minimizing is taken the heat passage of assembly to from glass.
According to the tenth eight aspect, the method for arbitrary aspect among aspect 2 or the 14-17 is provided, wherein drawing process is a fusion downdraw technology.
Description of drawings
Fig. 1 is the schematic side elevation of exemplary fusion down draw process according to an embodiment of the invention.
Fig. 2 is the schematic edge view via the part of the glass ribbon of down draw process formation, and wherein the edge mate of glass ribbon is in pairs between the opposite edges running roller.
Fig. 3 is the synoptic diagram of the reason of excessively beating of conventional edge running roller.
Fig. 4 is the schematic side elevation of the exemplary embodiment of edge drum assembly according to the present invention.
Fig. 5 is the schematic side view in partial cross-section of the exemplary embodiment of edge drum assembly according to the present invention that adopts gas bearing.
Fig. 6 is the schematic side elevation of the embodiment of Fig. 5 of dissecing fully.
Fig. 7 is the schematic side view in partial cross-section of modification of the embodiment of Fig. 5, and its middle roll is inertia running roller rather than driven running roller.
Fig. 8 is the schematic side view in partial cross-section of the exemplary embodiment of edge drum assembly according to the present invention that adopts ceramic bearing.
Embodiment
Draw thin band material and show that will have the modern times that form such as televisor and graphoscope less than about 2 millimeters thickness sheet glass using required Flatness strict standard needs carefully all aspects of control ME.But, must notice especially that glass ribbon carries out the transition to the period of elastic stage from viscous state.Even very little power changes on the glass ribbon, especially the variation itself in the power that applies near the cylinder surface in contact place of glass transition temperature can be revealed as the perturbation that should be in the original flat surfaces.
In exemplary fusion type down draw process, melten glass is supplied to molding, this molding be included in the upper surface of molding at its open-topped passage.The melten glass overflow goes out the wall of passage, and along the convergence flow downwards of molding, meets till the line place (that is, " root ") on institute edge meets at convergence surface up to the glass flows of separating.Glass flows separately links or fusion at there, to become the single glass ribbon that flows downward from molding.Localized each running roller (or " cylinder ") is used for dilatory or this glass ribbon of tractive downwards along the glass ribbon edge; And/or glass ribbon applied tension force, this tension force also helps in this technology, to keep the width of glass ribbon and/or restraint strap position wholly or in part simply.That is, some running rollers can be by phonomoter institute driven in rotation, and other running roller rotates freely.
Along with band descends from molding, melting material carries out the transition to the viscoelastic state and finally carries out the transition to elastic stage from the viscous state in the molding at.When glass ribbon was cooled to elastic stage, glass ribbon was by the sheet glass of being crossed over its width delineation and separately separating with formation along this score.
Be in fluid, viscous state period at glass ribbon, the stress that is applied on the melting material discharges immediately.But when glass ribbon cools and viscosity increased, the stress that causes can not discharge so soon, up to reaching that stress that (1) cause will be kept by glass and till (2) glass ribbon shape can remain on the TR in the glass.The both is the reason of undesirable residual stress and the finished product warpage.Therefore, it is desirable to, during stress and shape can be solidified in the glass, the power that is applied on the glass ribbon was consistent as far as possible with the glass ribbon shape.A reason of this variation is from the edge running roller.(note changing the variation that also can cause thickness of glass and other products characteristic from the power of edge running roller.) to be power and position consistency require for the ultralow stress of realizing LCD substrate for example and high flat degree experience is very important.
But the edge running roller can be taked any form, in all cases, and paired running roller pinching or clamping glass ribbon.Running roller is positioned at the opposite edge of glass ribbon in pairs, thereby for the specific vertical position (promptly arriving the distance of root) along glass ribbon length, uses two pairs of edge running rollers usually.The edge running roller can pass through such as electronic or fluid motor-driven, or the edge running roller can be freely to rotate.The edge running roller at opposite edge place can shared leap glass ribbon the width common support structure (for example common axis) of extending; Or each edge running roller can have the independently supporting structure (axle of self) of himself; This independently the head that only extends to running roller of supporting structure be positioned at the necessary length of required lateral position on the glass ribbon with related surface in contact, required lateral position is the high quality zone of glass ribbon and the edge section 34 between the glass ribbon edge.This surface in contact is designed to bear owing to contact the long term high temperature that produces with glass ribbon, surpasses 900 ℃ sometimes, and preferably utilizes stupalith, and for example surface in contact is made up of the ceramic fiber material dish usually.In addition, it is (transverse to the draw direction) of level that the longitudinal axis of edge rollers wheel assembly need not, but can be with respect to inclined to increase the pulling force of crossing over the glass ribbon width.
The location and the supporting device that are used for every pair of edge running roller are designed to adapt to the gap that changes between the surface in contact of running roller.For example, running roller adapts to the fluctuation of the thickness of glass at glass ribbon edge.The cylinder axostylus axostyle not exclusively is straight and receives warpage sometimes.Cylinder surface be not usually fully circle or centering.The cylinder material behavior can change along with cylinder rotates.In addition, the cylinder material is along with senile abrasion and diameter reduce, and the cylinder properties of materials wears out along with running roller and changes sometimes.The function of idler structure is to allow running roller to horizontally separated, and then along with the running roller operation more furthers together once more.
Production edge rollers wheel mechanism is designed to allow this motion at the running roller run duration, attempts to keep being applied to the consistent pinching power of glass simultaneously.Therefore, running roller usually by bias force towards the plane of glass ribbon inside pressurized.Running roller between pinching power be used to make cylinder to slide minimum and for being that keying action is arranged to level and the vertical pulling force that glass ribbon applies by running roller.The mechanism that applies this bias force should adapt to that above-mentioned reason causes inwardly with outwards moves (the edge cylinder between the gap broaden).For example, the edge running roller can comprise the lever and the fulcrum structure of lateral translation edge running roller supporting member.Can use counterweight to come lever is applied enough power, thereby but edge running roller surface in contact clamping glass ribbon, and still allow running roller to move transverse to the glass ribbon plane in response to the surface in contact excentricity that for example changes.But, also can use other method that applies bias force, the line of motion draws or the spring of push roller wheel assembly along being scheduled to such as being arranged to.
Illustrated in fig. 1 is exemplary fusion pull-down device 10, and this fusion downdraw equipment comprises the molding 12 that contains passage or groove 14 and convergence profiled surface 16.Assembling profiled surface 16 joins at root 18 places.(not shown) is supplied with melten glass to groove 14 from the source, and the wall of the excessive spout of melten glass also descends as separated flow on the outside surface of molding.Mobile melten glass separated flow can merge formation glass ribbon 20 at root 18 on the profiled surface 16 assembling.
When glass ribbon 20 arrived final thickness and viscosity, band was crossed over its width and is separated so that independent sheet glass or sheet to be provided.Along with melten glass continues to be supplied to molding, and the band lengthening, other sheet glass separated from this band.
Guard shield 22 centers on the upper area of root 18 below glass ribbons 20 and encloses part 24 with the top envelope of holding molding 12 and is connected.Guard shield 22 can be positioned on it to regulate the platform of glass ribbon temperature as various heating and/or cooling apparatus.Because than the buoyancy of warm air and the hottest temperature in the guard shield topmost length, internal pressure raises on the guard shield height in the guard shield inner 30.Opening in the wall of guard shield 22 causes from the upwards inner air of guard shield base portion with leakage and flows and usually the thermal condition in the guard shield is had remarkably influenced.Thereby, it is desirable to opening and leak minimum and be consistent for a long time.
Edge rollers wheel assembly 26 is positioned at the predetermined vertical position of root 18 belows, thereby and can comprise that being used for that glass ribbon is applied pulling force makes its driven edge running roller and/or glass-guiding band that moves along arrow 21 directions of Fig. 1 and limit the non-driven inertia running roller that it moves and/or helps to keep to cross over the pulling force of glass ribbon width.As stated, the common support structure that running roller can shared leap glass ribbon width, or each running roller can have the supporting structure of himself.As noted above, the edge running roller is generally arranging, each right running roller of running roller is positioned on the opposition side at edge of glass ribbon (referring to Fig. 2).In addition, also as noted above, the edge running roller has a pair of running roller to self being generally arranging at each glass ribbon edge, place, given vertical position.
As stated, of the present invention relating in one aspect to explored the high level dancing reason of finding in the conventional edge running roller.Fig. 3 illustrates this exploration.In the figure, Reference numeral 42 is bearing assemblies of conventional running roller, and Reference numeral 44 is its rotation axiss, and Reference numeral 46 is its heads that contact with the edge section 34 of glass ribbon in the glass ribbon cocked bead 48.As shown in the drawing, the zone of action distance of separation 40 between bearing assembly 42 and running roller head and the glass ribbon.In the practice, normally 1/3rd to half meters of this distances.Because this distance, intrinsic the beating of edge rollers wheel assembly highly amplified at the glass ribbon place.This amplification causes the variation of the contact position of type shown in four width of cloth figure that form Fig. 3 right part again.Specifically, first width of cloth and last width of cloth illustrate the nominal contact position of running roller head and glass ribbon 20 among these figure, and middle two pairs illustrate the periodically changed of the contact position that causes owing to beating of amplification.These of contact position change directly makes the glass ribbon motion.Friction in the sealing of production roller system in addition,, pivot and the slide mechanism causes the variation of the pinching power of actual transfer on the cylinder surface.This causes the level that is applied to glass ribbon and the variation of vertical pulling force again.Power changes and motion all disturbs glass-pulling to handle and influence the stress and the warpage of soleplate.
Fig. 4 illustrates according to edge rollers wheel construction of the present invention, and it is compared with the conventional edge running roller of Fig. 3 to reduce and beats.As shown in Figure 4, edge rollers wheel assembly 26 comprises supporting member 38, bearing assembly 50 and the head 36 that limits longitudinal axis 39, and the outside surface of head 36 comprises glass mating part 37.Shown in Fig. 4-8, supporting member 38 is the form of axle, but also can use other structure that is used for this supporting member if desired.Supporting member 38 can be fixed usually, but rotates so that bar is sagging or warpage is minimum under its situation that Li Wendu moves aloft if desired.Head 36 is pivotally connected to supporting member 38 through bearing assembly 50, rotates and carries out around longitudinal axis 39.The glass mating part 37 of head outside surface and bearing assembly are positioned near the same end of edge rollers wheel assembly.Like this, as shown in Figure 4, between the usage period, they all are positioned at the cocked bead 48 of glass ribbon, and specifically, they all are positioned at the edge section 34 of glass ribbon.
Although in certain embodiments, whole bearing assembly is in the cocked bead of glass ribbon, and in the practice, only partly (bearing surface that promptly rotates) need be in the edge of glass ribbon in the generation of beating of bearing assembly.For example; Among the embodiment of the Fig. 5-7 that discusses hereinafter; Only bearing surface and air cushion need be inner at the glass ribbon edge; And the rest part of bearing assembly, for example the portions of proximal of gas ports, gas passage, transverse bearing etc. can be positioned at the quite big distance in outside, glass ribbon edge section and not form beating of excessive degree.Be placed in the glass ribbon edge through beating of bearing assembly produced part, the scale effect that is caused by the distance 40 of Fig. 3 significantly reduces or eliminates fully according to the structure of roll assembly.Beating, to reduce be significant.For example, being used for beating usually of Fig. 3 system possibly be 1-3 millimeter magnitude.On the other hand, with the system of Fig. 4-8, this value can be for example in 0.05-0.15 millimeter scope.
Be positioned at the intramarginal bearing assembly of glass ribbon and partly need bear the higher operating temperature relevant with this position.Fig. 5 and 6 illustrates the edge rollers wheel assembly that adopts the air cushion bearing system, and such temperature can be born by this air cushion bearing system.Be used in the gas air normally in this bearing, avoid the greasy dirt that occurs usually in the pneupress system but also can use as other gas of nitrogen.
The general arrangement of each parts of system shown in Fig. 5.As shown here, its outside surface comprises that the shell 60 of the glass contact material 61 that cooperates with the edge section of glass ribbon is installed to supporting member 38 through gas bearing 62, and a surface of shell forms the part of supporting member far-end.Glass contact material 61 is pottery normally, and can be the form of ceramic fiber dish or ceramic monolith.In order to prevent end motion, this system comprises radial gas bearing provided 63.This bearing opposing is from the axial force of pulling force in the glass ribbon, especially under the situation of edge rollers wheel assembly that has a down dip.
As shown in Figure 6, supporting member 38 comprises and is used to introduce and from the gas passage 64,65,66 and 67 of assembly removal gas.Specifically, as shown in arrow 68, gas under pressure gets into assembly and is distributed to passage 65 and 66 through passage 64 at port 69 places.Shown in arrow 70 and 71, passage 65 provides gas to bearing 63 radially.Shown in arrow 72, passage 66 provides the main air cushion at bearing assembly 73 places in the gap.Shown in arrow 74, after passing gap 73, gas is removed from bearing assembly through passage 67, and passage 67 can be connected to vacuum collection device (not shown) so that the introducing in roll assembly position gas to the guard shield 22 inner 30 is minimum on the edge of.This gas can for example influence the degree of cleaning of glass ribbon and the temperature distribution of glass ribbon, and the temperature distribution of glass ribbon can influence stress distribution and/or its shape of glass ribbon again.
In order to make the edge running roller minimum to the glass ribbon Effect on Temperature Distribution, the far-end 75 of roll assembly specifically is that the far-end of head among Fig. 6 embodiment can be made up of (referring to the Reference numeral 76 of for example Fig. 6) the stupalith with low heat conductivity.Like this, the cooling of the gas of edge rollers wheel assembly far-end through passing assembly is more not remarkable, thereby the edge rollers wheel assembly does not constitute the significantly strong scatterer of imitating of glass ribbon.If desired, ceramic end cap or the sub-component that comprises end cap can be made removable.Since the end of edge rollers wheel assembly can be under glass ribbon breaks situation since the glass that descends and impaired, this substitutability can reduce running cost and be convenient to maintenance operation.Be additional to or replace ceramic end cap, can heat insulator 79 be included in this assembly to reduce the heat effect of roll assembly.
The embodiment of Fig. 5-6 comprises elongated shell 60, and this elongated shell 60 is suitable for being attached to electronic or the oil motor (not shown).In typical fusion draw machine, a plurality of edges running roller is the inertia running roller that not driven by motor.In these cases, shell 60 can be made than remarkable weak point shown in Figure 7.This shorter structure can reduce the cost of this assembly.In addition, shell 60 can be processed by graphite, but then can comprise the non-carrier of oxygen of shielding gas.
Except gas bearing, also can use the pyroceramic bearing that can buy from each manufacturers, for example have the bearing of the operating surface of forming by for example zirconium or aluminum oxide.Fig. 8 illustrates the embodiment that adopts this bearing.For this embodiment, ball 77 is all processed by high temperature ceramic material with seat ring 78, can be identical or different material for ball and seat ring.
Although the edge rollers wheel assembly shown in Fig. 4-8 adopts single head 36, disclosed herein beating reduces technology and can be applicable to one equally and be installed in rotation on the assembly on the supporting member 38 with head portion, shown in the uppermost margin roll assembly of Fig. 1.
The low edge running roller of beating that this paper discloses produces various advantages in sheet glass is made.As stated, have been found that conventional running roller produces High variation power and also gives glass ribbon with motion, this can produce warpage, stress and/or variation in thickness jointly.Through reducing beating of glass ribbon surface, can reduce the motion that power variation and running roller are applied to glass.As stated, beating that available edge rollers wheel assembly disclosed herein is realized reduces and can for example be decreased to 0.05-0.15mm from 1-3mm in 20/several magnitude.But reduce similar the reducing that realizable force changes from beating.Importantly, power changes motion all reduces with glass ribbon combination and can produce and be superior to independent separately attainable technological advantage about the warpage that reduces, the STRESS VARIATION that reduces and/or the variation in thickness aspect that reduces.
Except its advantage of beating, edge rollers wheel assembly disclosed herein can have simpler and firmer structure, relates to than conventional edge running roller less components and the littler overall dimension of generation.In addition, the big I of the glass mating part of the head of this assembly is less than the size that is used for conventional running roller, and this can reduce near the heat effect the cylinder, and this heat effect can produce stress and the polarizing effect in the finished product.
In addition, because in exemplary embodiments, supporting member 38 does not rotate, the depth of penetration of the head of edge rollers wheel assembly can more easily change with the specific dimensions that adapts to concrete shaping drawing through the length that changes supporting member.This can realize through for example supporting member being divided into two or more parts.Like this,, can common header be used for the supporting member of different lengths, therefore reduce the quantity of the specific features relevant with the edge rollers wheel assembly of given glass manufacturing machine for the manufacturing of using differing formed technology.This structure also can be convenient to maintenance through making it be easy to install and disassembling the edge rollers wheel assembly.In fact, this structure can be used for allowing when glass ribbon is continued to drive by other assembly, removing and safeguarding a pair of edge rollers wheel assembly.
To be conspicuous from the aforementioned various remodeling that do not depart from the scope of the present invention open with spirit for those of ordinary skill in the art.Following claims is intended to cover remodeling, modification and the equivalent of this specific embodiment of setting forth and these embodiment.
Claims (18)
1. edge rollers wheel assembly that is used for glass ribbon, said edge rollers wheel assembly comprises:
(A) supporting member, said supporting member limits longitudinal axis;
(B) bearing assembly, said bearing assembly comprise generation dancing part; And
(C) head, said head has the outside surface that comprises the glass mating part;
Wherein:
(i) said head is pivotally mounted to said supporting member through said bearing assembly, and said rotation is carried out around said longitudinal axis; And
(ii) said the beating of the said glass mating part of said head and said bearing assembly produces each position that part is positioned at the said longitudinal axis in edge, makes that between the said edge rollers wheel assembly usage period, said each position is all in the edge of said glass ribbon.
2. edge rollers wheel assembly as claimed in claim 1; It is characterized in that; Said glass ribbon has the edge section; The said glass mating part of said head and said bearing assembly said beats and produces part and be positioned at each position along said longitudinal axis, makes between the said edge rollers wheel assembly usage period, and what said each position all had the edge section that is positioned at said glass ribbon strides the glass ribbon position.
3. like claim 1 or the described edge rollers wheel assembly of claim 2, it is characterized in that:
(a) said assembly comprises second head and second bearing assembly, and said second head comprises the glass mating part, and said second bearing assembly comprises generation dancing part;
(b) said second head is pivotally mounted to said supporting member through said second bearing assembly, and said rotation is carried out around said longitudinal axis; And
(c) said the beating of the said glass mating part of said second head and said second bearing assembly produces each position that part is positioned at the said longitudinal axis in edge; Make that between the said edge rollers wheel assembly usage period, said each position is all in the edge of said glass ribbon.
4. edge rollers wheel assembly as claimed in claim 3; It is characterized in that; Said glass ribbon has two edge sections; And each glass mating part is beated with each and is produced part and be positioned at the position along said longitudinal axis, makes between the said edge rollers wheel assembly usage period, said position have be positioned at the edge section stride the glass ribbon position.
5. like each described edge rollers wheel assembly among the claim 1-4, it is characterized in that said bearing assembly adopts air cushion.
6. edge rollers wheel assembly as claimed in claim 5 is characterized in that the gas of said air cushion is air.
7. like claim 5 or the described edge rollers wheel assembly of claim 6, it is characterized in that said bearing assembly comprises sub-component, said sub-component is resisted said head moving along said longitudinal axis.
8. edge rollers wheel assembly as claimed in claim 7 is characterized in that, said sub-component adopts air cushion.
9. like each described edge rollers wheel assembly among the claim 5-8, it is characterized in that, said head is isolated to reduce assembly heat passage from said glass ribbon between the usage period.
10. like each described edge rollers wheel assembly among the claim 1-9, it is characterized in that the far-end of said head comprises ceramic cap.
11. the drawing process that passes through the production glass ribbon is produced the equipment of sheet glass, comprises like each described edge rollers wheel assembly among the claim 1-10.
12. equipment as claimed in claim 11 is characterized in that, comprises that wherein said two edge rollers wheel assemblies cooperate with the two opposite sides of said glass ribbon between the usage period at said equipment like each described second edge rollers wheel assembly among the claim 1-10.
13. a method of making sheet glass, said method comprises:
(A) use drawing process to produce glass ribbon; And
(B) from said glass ribbon cutting glass plate;
Wherein:
(i) said glass ribbon has the edge section;
(ii) step (A) comprises that the edge section that makes said glass ribbon contacts with the glass matching surface of said edge rollers wheel assembly;
(iii) said edge rollers wheel assembly comprises bearing assembly; And
What (iv) the generation dancing of said at least bearing assembly partly had the edge section that is positioned at said glass ribbon strides the glass ribbon position.
14. method as claimed in claim 13 is characterized in that, said bearing assembly adopts air cushion, and said method comprises and makes gas pass said edge rollers wheel assembly to form said air cushion.
15. method as claimed in claim 14 is characterized in that, said bearing assembly comprises sub-component, and the glass ribbon of striding that said sub-component is resisted the said glass matching surface of said edge rollers wheel assembly moves.
16. method as claimed in claim 15 is characterized in that, said sub-component adopts air cushion, and said method comprises and makes gas pass said edge rollers wheel assembly to form said air cushion.
17. each the described method as among the claim 13-16 is characterized in that said edge rollers wheel assembly comprises ceramic end cap, said ceramic end cap minimizing is taken the heat passage of said assembly to from said glass.
18. each the described method as among the claim 13-17 is characterized in that said drawing process is a fusion downdraw technology.
Applications Claiming Priority (3)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| US30489010P | 2010-02-16 | 2010-02-16 | |
| US61/304,890 | 2010-02-16 | ||
| PCT/US2011/023861 WO2011102982A1 (en) | 2010-02-16 | 2011-02-07 | Low run-out edge rollers for use with glass ribbons |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN102753492A true CN102753492A (en) | 2012-10-24 |
Family
ID=43769295
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN2011800093867A Pending CN102753492A (en) | 2010-02-16 | 2011-02-07 | Low run-out edge rollers for use with glass ribbons |
Country Status (5)
| Country | Link |
|---|---|
| JP (1) | JP2013519626A (en) |
| KR (1) | KR20130024887A (en) |
| CN (1) | CN102753492A (en) |
| TW (1) | TW201130754A (en) |
| WO (1) | WO2011102982A1 (en) |
Cited By (3)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN111018319A (en) * | 2019-11-23 | 2020-04-17 | 石家庄旭新光电科技有限公司 | Stress adjustment control method for liquid crystal glass substrate |
| CN113880405A (en) * | 2021-09-24 | 2022-01-04 | 彩虹（合肥）液晶玻璃有限公司 | Self-correcting traction roller structure for liquid crystal substrate glass forming |
| CN114214826A (en) * | 2021-12-16 | 2022-03-22 | 邵阳东信棉业有限公司 | Dust collector is used in surface fabric production |
Families Citing this family (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| US20110100057A1 (en) * | 2009-10-29 | 2011-05-05 | Gaylo Keith R | Method and apparatus for reducing heat loss from edge directors in a glass making process |
Citations (7)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| BE334007A (en) * | ||||
| US3709673A (en) * | 1970-11-25 | 1973-01-09 | Ppg Industries Inc | Edge-roll machine in float glass apparatus |
| JPH05124826A (en) * | 1991-10-31 | 1993-05-21 | Hoya Corp | Device for producing glass plate |
| US5316129A (en) * | 1993-03-02 | 1994-05-31 | Vesuvius Crucible Company | Ceramic conveyor roll having flat-sided spring retainer for non-rotatably mounting end caps to roller |
| DE19544995C1 (en) * | 1995-12-02 | 1997-04-03 | Kramer Carl | Horizontal toughening line for flat glass |
| JP2008045652A (en) * | 2006-08-14 | 2008-02-28 | Oiles Ind Co Ltd | Static pressure gas bearing |
| US20080128247A1 (en) * | 2006-12-01 | 2008-06-05 | Apro System Co., Ltd. | Apparatus for conveying |
Family Cites Families (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| WO2011007656A1 (en) * | 2009-07-13 | 2011-01-20 | 旭硝子株式会社 | Glass plate production method and production device |
-
2011
- 2011-02-07 CN CN2011800093867A patent/CN102753492A/en active Pending
- 2011-02-07 WO PCT/US2011/023861 patent/WO2011102982A1/en active Application Filing
- 2011-02-07 JP JP2012553931A patent/JP2013519626A/en not_active Ceased
- 2011-02-07 KR KR1020127023869A patent/KR20130024887A/en not_active Application Discontinuation
- 2011-02-15 TW TW100104950A patent/TW201130754A/en unknown
Patent Citations (7)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| BE334007A (en) * | ||||
| US3709673A (en) * | 1970-11-25 | 1973-01-09 | Ppg Industries Inc | Edge-roll machine in float glass apparatus |
| JPH05124826A (en) * | 1991-10-31 | 1993-05-21 | Hoya Corp | Device for producing glass plate |
| US5316129A (en) * | 1993-03-02 | 1994-05-31 | Vesuvius Crucible Company | Ceramic conveyor roll having flat-sided spring retainer for non-rotatably mounting end caps to roller |
| DE19544995C1 (en) * | 1995-12-02 | 1997-04-03 | Kramer Carl | Horizontal toughening line for flat glass |
| JP2008045652A (en) * | 2006-08-14 | 2008-02-28 | Oiles Ind Co Ltd | Static pressure gas bearing |
| US20080128247A1 (en) * | 2006-12-01 | 2008-06-05 | Apro System Co., Ltd. | Apparatus for conveying |
Cited By (3)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN111018319A (en) * | 2019-11-23 | 2020-04-17 | 石家庄旭新光电科技有限公司 | Stress adjustment control method for liquid crystal glass substrate |
| CN113880405A (en) * | 2021-09-24 | 2022-01-04 | 彩虹（合肥）液晶玻璃有限公司 | Self-correcting traction roller structure for liquid crystal substrate glass forming |
| CN114214826A (en) * | 2021-12-16 | 2022-03-22 | 邵阳东信棉业有限公司 | Dust collector is used in surface fabric production |
Also Published As
| Publication number | Publication date |
|---|---|
| WO2011102982A1 (en) | 2011-08-25 |
| KR20130024887A (en) | 2013-03-08 |
| TW201130754A (en) | 2011-09-16 |
| JP2013519626A (en) | 2013-05-30 |
Similar Documents
| Publication | Publication Date | Title |
|---|---|---|
| JP5645063B2 (en) | Glass film manufacturing apparatus and manufacturing method | |
| KR101849401B1 (en) | Method of producing glass sheets | |
| EP2548851B1 (en) | Method for manufacturing belt-shaped glass film | |
| KR101669708B1 (en) | Active edge roll control in a glass drawing process | |
| CN102050562B (en) | Low friction edge roll to minimize force cycling | |
| CN102753492A (en) | Low run-out edge rollers for use with glass ribbons | |
| CN105073661B (en) | For the method for the device and leveling glass plate that flatten glass plate | |
| TWI468352B (en) | Method for shaping regions on a glass ribbon | |
| US20110126593A1 (en) | Apparatus and method for separating a glass sheet | |
| KR20120038967A (en) | Glass plate production method and production device | |
| JP6239226B2 (en) | Method and apparatus for removal of peripheral edge of glass sheet | |
| CN101679100A (en) | Constant force scoring device and using method thereof | |
| WO2015029669A1 (en) | Method for conveying thin sheet glass, conveyance device, cutting method, and method for producing glass article | |
| TWI636969B (en) | Glass plate manufacturing method and glass plate | |
| US11802069B2 (en) | Systems and methods for processing thin glass ribbons | |
| RU2499772C1 (en) | Method of producing float glass | |
| KR102660244B1 (en) | Systems and methods for processing thin glass ribbons | |
| JP5500377B2 (en) | Glass film manufacturing method and manufacturing apparatus | |
| JP7193542B2 (en) | Glass manufacturing apparatus and method for separating glass ribbon | |
| US20240025791A1 (en) | Systems and methods for processing thin glass ribbons | |
| KR20110047164A (en) | Low friction edge rolls to minimize force circulation | |
| WO2013043399A1 (en) | Isolator for use in separating glass sheets from a glass ribbon |
Legal Events
| Date | Code | Title | Description |
|---|---|---|---|
| C06 | Publication | ||
| PB01 | Publication | ||
| C10 | Entry into substantive examination | ||
| SE01 | Entry into force of request for substantive examination | ||
| C02 | Deemed withdrawal of patent application after publication (patent law 2001) | ||
| WD01 | Invention patent application deemed withdrawn after publication |
Application publication date: 20121024 |