CN103113018A - Pulling rolls for use in glass manufacturing processes and glass manufacturing processes incorporating the same - Google Patents
Pulling rolls for use in glass manufacturing processes and glass manufacturing processes incorporating the same Download PDFInfo
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- CN103113018A CN103113018A CN2012105357463A CN201210535746A CN103113018A CN 103113018 A CN103113018 A CN 103113018A CN 2012105357463 A CN2012105357463 A CN 2012105357463A CN 201210535746 A CN201210535746 A CN 201210535746A CN 103113018 A CN103113018 A CN 103113018A
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- elastic element
- pulling roll
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- sheave
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- 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
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Abstract
In one embodiment, a pulling roll for drawing glass sheet in a down-draw process includes a shaft member and a compliant cover assembly positioned on the shaft member. The compliant cover assembly includes at least one traction disk positioned on the shaft member. The at least one traction disk includes an annular hub and a plurality of spring elements integrally formed with the annular hub. The spring elements project outward from the annular hub such that a free end of each spring element is positioned radially outward from a base of each spring element. Each of the spring elements has a spring constant in a range from about 2 lbf/mm to about 2000 lbf/mm. When the compliant cover assembly is engaged with a planar surface of a glass sheet, the spring elements deflect radially inward, towards a center of the annular hub, thereby preventing damage to the glass sheet.
Description
Technical field
The right of priority of the international patent application no PCT/US11/54525 of the appointment U.S. that requires to submit on October 3rd, 2011 according to 35.U.S.C. § 365 the application, its content is relevant and incorporate in full by reference this paper into.
This specification sheets relates generally to the pulling roll of using in the sheet glass manufacturing processed, relates more specifically to comprise elastic element sheet glass is applied the pulling roll of drawing force.
Background technology
Pulling roll is used in the sheet glass manufacturing processed, applying drawing force to glass ribbon or bar, thereby forms independent sheet glass.When glass is pulled out by melten glass, for example in the downward drawing smelting process of overflow, as U.S. Patent number 3,338,696 and 3,682,609 describe, or in similar glass manufacturing process, the amount that pulling roll applies drawing force to glass is used for controlling the nominal thickness of glass.
Pulling roll is usually designed to the outward flange of contact glass bar, usually only in the medial region of the thickening flange that forms glass bar utmost point edge.Because pulling roll is directly to contact the glass bar surface, glass surface can produce destruction due to the wearing character of pulling roll material.For example, thus the surface that glass particle can embed pulling roll causes glass when pulling roll contact glass destruction.
Same, if decompose when the material of pulling roll uses under the high temperature of glass drawing process, pulling roll can be deviate from particulate matter.Thereby this particulate matter can embed soft glass in formation defective on glass.In addition, result from particulate matter in glass drawing process (for example, chip, powder, glass fragment is like that) thus the surface that can embed pulling roll produces repeated defective on glass bar.The destruction to glass bar that any these mechanism cause may cause the uncontrollable and/or too early breakage of sheet glass in the drawing process, thereby has reduced manufacturing efficient and increased cost.
Therefore, the design of the another kind of the pulling roll of using needs in glass manufacturing process.
Summary of the invention
Embodiment described herein relates to the pulling roll of using in glass drawing process, too early and/or uncontrollable damaged generation of sheet glass when it reduces with pulling roll drawing.Also disclose the method for utilizing pulling roll to form sheet glass, it alleviates in glass drawing process the too early and/or uncontrollable breakage of sheet glass.
According to an embodiment, a kind ofly can comprise that for reducing sheet glass pulling roll too early and/or uncontrollable breakage shaft component and the conformability that is positioned on shaft component coat assembly.Conformability coats assembly can comprise that at least one is positioned at the sheave on shaft component.Described at least one sheave can comprise annular wheel hub and elastic element a plurality of and that annular wheel hub is integrally formed.A plurality of elastic elements can be protruding by annular wheel hub, makes base portion that the free end of each elastic element in a plurality of elastic elements is positioned to each elastic element from a plurality of elastic elements radially outward.In described a plurality of elastic element, each can have from about 2lbf/mm to about 2000lbf/mm the radial elastic coefficient of (approximately 8.9N/mm to approximately 8896.4N/mm) scope.When conformability coats assembly and engages with the plane of sheet glass, at least a portion of a plurality of elastic elements radially inside, towards the center deflection of annular wheel hub, thereby prevent from damaging sheet glass.
In another embodiment, a kind ofly can comprise that for reducing sheet glass pulling roll too early and/or uncontrollable breakage shaft component and the conformability that is positioned on shaft component coat assembly.Conformability coats assembly can comprise a plurality of sheaves that are positioned on shaft component.In a plurality of sheaves each sheave can with adjacent sheave rotation offset, and in a plurality of sheave, each sheave can comprise annular wheel hub and elastic element a plurality of and that annular wheel hub is integrally formed.A plurality of elastic elements can be protruding by annular wheel hub, makes base portion that the free end of each elastic element in a plurality of elastic elements is positioned to each elastic element from a plurality of elastic elements radially outward.In described a plurality of elastic element, each elastic element is can be between free end and base portion crooked along the reverse direction of the downward drawing sense of rotation of pulling roll.In described a plurality of elastic element, each elastic element can have from about 2lbf/mm to about 2000lbf/mm the radial elastic coefficient of (approximately 8.9N/mm to approximately 8896.4N/mm) scope.When conformability coats assembly and engages with the plane of sheet glass, described elastic element radially inside, towards the center deflection of annular wheel hub, thereby prevent from damaging sheet glass.
Also have, in the another one embodiment, a kind of method that reduces the formation sheet glass of the too early and/or uncontrollable breakage of sheet glass can comprise that melten glass prepares burden to form melten glass and melten glass is configured as sheet glass.Thereafter, sheet glass at least first surface can contact with at least one pulling roll and transmit sheet glass with downstream.Described at least one pulling roll can comprise that shaft component and the conformability that is positioned on shaft component coat assembly.Conformability coats assembly can comprise a plurality of sheaves that are positioned on shaft component.In a plurality of sheaves, each can comprise the annular wheel hub integrally formed with a plurality of elastic elements, these a plurality of elastic elements are protruding from annular wheel hub, make base portion that the free end of each in a plurality of elastic elements is positioned to from a plurality of elastic elements each radially outward.In described a plurality of elastic element, each can have from about 2lbf/mm to about 2000lbf/mm the radial elastic coefficient of (approximately 8.9N/mm to approximately 8896.4N/mm) scope.When conformability coats the first surface at least of assembly contact glass plate, described elastic element radially inwardly, towards the center deflection of annular wheel hub, thereby prevent from damaging sheet glass.
Other feature ﹠ benefits of the present invention will be set forth in the following detailed description, and those skilled in the art are apparent or implement the part that embodiment described herein recognizes by the description of this paper, comprise detailed description subsequently, claim, and accompanying drawing.
Should be understood that the general remark of front and subsequently detailed description described numerous embodiments, aim to provide character and feature that general introduction or framework are used for understanding the claimed subject thing.Accompanying drawing is involved further to be understood numerous embodiments to provide, and is merged in a part that consists of this specification sheets.Accompanying drawing has been showed numerous embodiments described herein, and together is used for explaining principle and the operation of claimed subject thing with specification sheets.
Description of drawings
Figure 1A has schematically shown the glass pulling device that is used to form sheet glass according to one or more embodiments of this paper displaying and description;
Figure 1B has schematically shown the cross section that is used for the drawing assembly that comprises a pair of relative pulling roll of drawing sheet glass;
Fig. 2 has schematically shown according to this paper and has showed and the partial exploded view of the pulling roll that is formed by a plurality of sheaves of one or more embodiments of describing;
Fig. 3 has schematically shown the sheave according to Fig. 2 pulling roll of one or more embodiments of this paper displaying and description;
Fig. 4 has schematically shown annular wheel hub and the single elastic element that is used for Fig. 3 sheave of illustration purpose;
Fig. 5 has schematically shown the sheave that is used for pulling roll, and wherein the elastic element of sheave has compound curvature;
Fig. 6 has schematically shown the sheave that is used for pulling roll, and wherein the elastic element of sheave comprises contact feet;
Fig. 7 has schematically shown the sheave that is used for pulling roll, and wherein the elastic element of sheave is connected by wheel rim;
Fig. 8 has schematically shown the sheave that is used for pulling roll, and wherein elastic element has the top angled with respect to the bottom;
Fig. 9 has schematically shown annular wheel hub and the single elastic element that is used for Fig. 8 sheave of illustration purpose;
Figure 10 has schematically shown another embodiment according to the sheave that is used for pulling roll of one or more embodiments of this paper displaying and description; With
The part that Figure 11 has schematically shown the sheave of pulling roll engages with glass pane surface.
Embodiment
To introduce in detail now for the manufacture of the pulling roll of sheet glass and the numerous embodiments of the technology for making glass that adopts it.In situation as possible, identical Reference numeral is used for representing identical or similar parts in whole accompanying drawing.Fig. 2 has schematically shown an embodiment of pulling roll.Pulling roll usually comprises shaft component and coats assembly with the conformability that is positioned on shaft component.Conformability coats assembly and is formed by a plurality of sheaves, and described sheave has the elastic element that extends radially outwardly from annular wheel hub.Described elastic element has usually from about 2lbf/mm to about 2000lbf/mm the coefficient of elasticity of (approximately 8.9N/mm to approximately 8896.4N/mm) scope.Described pulling roll and the method for using this pulling roll drawing sheet glass, this paper will be described in more detail by the concrete introduction to accompanying drawing.
The sheet glass material usually can form melten glass by melten glass batching and thereafter melten glass is configured as sheet glass and obtain.Exemplary method comprises float glass technology, slit drawing process and fusion downdraw technique.In each of these techniques, one or more pulling roll can be used to contact glass plate and downstream transmits sheet glass.
For example with reference to Figure 1A, schematically shown the glass manufacturing apparatus 100 that is used for being formed by melten glass the sheet glass material of an example, it is configured as sheet glass with the melting drawing machine with melten glass.Described glass manufacturing apparatus 100 comprises melt container 101, refining vessel 103, mixing vessel 104, transport box 108 and melting drawing machine (FDM) 120.As shown in arrow 102, preparing glass charge is introduced into melt container 101.Batching is melted and forms melten glass 106.Refining vessel 103 has the high temperature process district that acceptance comes from the melten glass 106 of melt container 101, and removes therein the bubble in melten glass 106.Refining vessel 103 is connected by pipe connecting 105 with mixing vessel 104.That is to say the melten glass that flows to mixing vessel 104 from refining vessel 103 pipe connecting 105 of flowing through.Mixing vessel 104 is connected by pipe connecting 107 in order with transport box 108, makes the melten glass that flows to transport box 108 from mixing vessel 104 pipe connecting 107 of flowing through.
With reference to Figure 1B, schematically shown the cross section of drawing assembly 150.As shown in Figure 1B, drawing assembly 150 generally includes a pair of relative pulling roll 200a, 200b, the relative two sides of its contact glass plate 148.Therefore, be to be understood that sheet glass 148 at pulling roll 200a, is impacted between 200b.Pulling roll 200a, 200b can be initiatively (be pulling roll 200a, the 200b active rotation, therefore give drawing gravitation so that sheet glass 148 downstream 151 are transmitted) or passive (be pulling roll 200a, 200b contact glass plate 148 keeps stable when making sheet glass by other pulling roll downstream 151 drawings).
Although pulling roll 200a, the 200b device that utilizes the melting drawing machine to form sheet glass that is incorporated into as described herein, but be to be understood that pulling roll may be employed with similar technological process, make the preparing glass charge melting form melten glass in this technological process, then melten glass forms sheet glass and by the pulling roll drawing.As implement the mode of mode and non-limiting, and pulling roll described herein also can be utilized and drawing technique upwards, the slit drawing process, and float glass process drawing technique and other similar glass drawing technique combine.
Concise and to the point description as mentioned, therefore the direct contact glass plate of the pulling roll in above-mentioned technological process due to the wearing character of traditional pulling roll, may produce the destruction for glass surface.For example, glass particle may embed the surface of traditional pulling roll, the destruction that causes glass when pulling roll contact glass.Similarly, particulate matter can be decomposed and deviate to traditional pulling roll when high temperature extends use.This particulate matter can embed soft glass, thereby forms defective in glass.No matter originate, such defective and/or destroy may cause in glass drawing process the too early and/or uncontrollable breakage of sheet glass, makes efficient and increases cost thereby reduce.Pulling roll described herein is utilized the elastic element contact glass plate.Elastic element is formed by the material of high temperatures, and, so pulling roll is difficult for decomposing or deviating from particulate matter after extending use.In addition, pulling roll forms open architecture between elastic element, makes particulate matter easily be wrapped in the tractive roll body, rather than it is surperficial to embed pulling roll.
Referring now to Fig. 2, schematically shown the example pulling roll 200 that is used for the technology for making glass process.Pulling roll 200 generally includes shaft component 202 and coats assembly 208 with the conformability that is positioned on shaft component 202.Conformability coats assembly 208 and comprises a plurality of sheaves 210 that are positioned on shaft component 202 and form the surface in contact 209 of conformability coating assembly.Although the embodiment of the pulling roll 200 that Fig. 2 represents comprises a plurality of sheaves, be to be understood that conformability coats assembly 208 and can be formed by single sheave.
Referring now to Fig. 3 and 4, schematically shown the sheave 210 that is used for pulling roll 200 conformabilitys coating assemblies.In embodiment described herein, sheave 210 generally includes annular wheel hub 206 and a plurality of elastic elements 204.A plurality of elastic elements 204 are one-body molded and radially outward stretched out by annular wheel hub 206 with annular wheel hub 206, as shown in Figure 3.Best as shown in Figure 4, each elastic element 204 is in base portion 214 and 212 extensions of free end.Especially, each elastic element 204 integrally is attached to annular wheel hub 206 at base portion 214, makes the free end 212 of elastic element be positioned to from base portion 214 and annular wheel hub 206 radially outward.In the embodiment of sheave 210 shown in Figure 3, annular wheel hub 206 and a plurality of elastic elements 204 are substantially at same plane.
The elastic element 204 of each sheave 210 is designed to respect to annular wheel hub 206 elastic bendings, makes when pulling roll pressurized contact glass plate surface so that sheet glass is applied drawing gravitation, and elastic element 204 is with respect to flexibly displacement of annular wheel hub 206.Thus, when sheet glass was applied drawing gravitation, elastic element 204 did not damage sheet glass.
More specifically, the elastic element 204 of each sheave usually have from about 2lbf/mm to about 2000lbf/mm (approximately 8.9N/mm to approximately 8896.4N/mm) or and even from about 5lbf/mm to about 1500lbf/mm the radial elastic coefficient (namely the edge is from the coefficient of elasticity of the radially projecting of annular wheel hub 206) of (approximately 22.2N/mm to approximately 6672.3N/mm) scope.Coefficient of elasticity drops on these scopes can produce the pulling roll of enough complying with, thereby when not damaging sheet glass, also enough firmly so that enough tractive force to be provided to glass pane surface, promotes pulling roll to the drawing of sheet glass.
As mentioned above, chip, for example glass fragment or other particulate matters, can contact pulling roll in the drawing process downwards.In order to prevent that thereby chip from embedding the sheet glass that the pulling roll conformability coats the surface in contact destruction pulling roll drawing of assembly, the elastic element 204 of sheave 210 is enough complied with in axial and tangential direction, make when chip is impacted between the surface in contact of conformability coating assembly, tangential and/or the axial displacement of elastic element, make chip by allowing chip fully by between the elastic element of pulling roll or be wrapped in conformability and coat among assembly, coat the surface of assembly away from conformability, thereby alleviate the damage to sheet glass.In pulling roll embodiment as herein described, elastic element 204 usually have enough low axial elasticity coefficient (namely as shown in Figure 3 coordinate axis+/-coefficient of elasticity on the z direction) so that set the inclination angle (being the major axis angle with respect to the horizontal plane of roller) of roller.For example, the axial elasticity coefficient can be from about 0.25lbf/mm to about 150lbf/mm (approximately 1.1N/mm to approximately 667.2N/mm) or and even from about 5lbf/mm to about 75lbf/mm (approximately 22.2N/mm to approximately 333.6N/mm).The tangential coefficient of elasticity coefficient of elasticity of arrow 240 directions (namely) enough height is kept constant plate with impact and is moved speed to prevent the free-ended excessive deflection of elastic element.In embodiment as herein described, tangential coefficient of elasticity can be from about 2lbf/mm to about 75lbf/mm (approximately 8.9N/mm to approximately 333.6N/mm) or and even from about 5lbf/mm to about 50lbf/mm (approximately 22.2N/mm to approximately 222.4N/mm).
Referring now to Fig. 2-4, in the embodiment of pulling roll described herein, the elastic element 204 of sheave 210 forms on annular wheel hub, makes spacing G between the base portion of adjacent elastic element 204 along the circumferential direction more than or equal to about 0.01mm.Described spacing is enough to allow chip by between elastic element adjacent on circumferential direction 204, rather than embeds the surface in contact 209 that conformability coats assembly 208.In some embodiments, spacing G can be more than or equal to about 0.05mm.
Still with reference to Fig. 2-4, in the embodiment of pulling roll 200 described herein, the annular wheel hub 206 of sheave 210 has the outside diameter d in from about 18mm to about 75mm scope usually, and the D outer diameter of sheave 210 is in from about 60mm to about 200mm scope simultaneously.Therefore, the conformability that is to be understood that pulling roll 200 coats assembly and also has external diameter in from about 60mm to about 200mm scope.
The axial width t of elastic element 204 (be coordinate axis shown in Figure 3+/-thickness of Z direction) and the thickness of annular wheel hub 206 usually in the scope from about 0.50mm to about 105mm.In addition, for given material, thereby the axial width t of elastic element 204 can increase or reduce the axial elasticity coefficient of adjusting elastic element 204.In some embodiments, the axial width of annular wheel hub 206 can be greater than the axial width of elastic element 204.In these embodiments, in the time of on sheave 210 is fixed in shaft component 202, annular wheel hub 206 is used to obtain required spacing between axially adjacent elastic element 204.Therefore, be to be understood that sheave 210 can be formed by the annular wheel hub with different thickness, thereby obtain required spacing between axially adjacent elastic element.
In the embodiment of pulling roll 200 described herein, when pulling roll was compressed against on the plane of glass substrate, elastic element 204 can be shaped as specific curved surface to realize required mechanical response (being required recoverable deformation and pressure).For example, the embodiment of the pulling roll 200 that Fig. 2-4 expression is made of the sheave 210 with the elastic element of bending between free end 212 and base portion 214, make when the free end of elastic element and sheet glass plane engagement, elastic element is radially inwardly flexibly crooked towards the center of annular wheel hub.In some embodiments, the radius of curvature R of elastic element 204 is constant between free end 212 and base portion 214.In these embodiments, radius of curvature R can be from about 10mm to about 80mm and even from about 10mm to about 40mm.In these embodiments, elastic element 204 reverse direction along the downward drawing sense of rotation of pulling roll usually is crooked, makes elastic element 204 be easy to bending when the contact glass plate surface.For example, when the pulling roll 200a of Figure 1B had clockwise downward drawing sense of rotation, elastic element 204 was to counterclockwise crooked.
In other embodiments, elastic element 204 can have compound curvature.For example, in some embodiments, the free end 212 from the base portion 214 of elastic element 204 to elastic element 204, the radius-of-curvature of each elastic element can increase.In other embodiments, the free end 212 from the base portion 214 of elastic element to elastic element 204, the radius-of-curvature of each elastic element can reduce.Also have in other embodiment, elastic element 204 can be formed by compound curvature, and wherein the difference of elastic element joint has different radius and/or crooked to different directions.For example, Fig. 5 has represented the embodiment of sheave 234, and wherein elastic element has bottom 227 (being that elastic element is near the part of annular wheel hub 206) and top 226.In this embodiment, the bottom 227 of each elastic element 204 has first curvature radius and to counterclockwise crooked, meanwhile the top 226 of elastic element 204 have second, different radius-of-curvature and crooked to clockwise direction.In these embodiments, the top 226 of the elastic element reverse direction along the downward drawing sense of rotation of pulling roll usually is crooked.Therefore, in sheave shown in Figure 5 234 embodiments, the direction of the downward drawing of pulling roll should be counterclockwise.
Referring now to Fig. 6, schematically shown another embodiment of sheave 230.In this embodiment, sheave 230 is formed by the elastic element 204 that is included in the contact feet 216 that each elastic element 204 free end 212 forms.Contact feet 216 has increased elastic element 204 and with the contact area between the glass pane surface of sheave 230 drawings.The increase of the contact area between elastic element 204 and glass pane surface has improved the frictional force between sheave and sheet glass, permission gives sheet glass larger moment of torsion by shaft component, thereby do not reducing in the elasticity situation of elastic element 204, increase the gravitation that pulls down that puts on sheet glass, thereby alleviate the possible damage of sheet glass in downward drawing process.
As indicated above, sheave can form the keyway that prevents that sheave from rotating on shaft component.In sheave shown in Figure 6 230 embodiments, keyway 250 is openings that form on annular wheel hub 206.Keyway 250 by moulding holding the corresponding key that is attached on shaft component (showing), thereby prevent that sheave 230 from rotating on shaft component.
Referring now to Fig. 7, schematically shown another embodiment of sheave 232.In this embodiment, sheave 232 comprises wheel rim 218.Wheel rim 218 is connected the free end of the adjacent elastic element on the free end of each elastic element in a plurality of elastic elements and same sheave.In this embodiment, wheel rim 218 has increased elastic element and with the contact area between the glass pane surface of sheave 232 drawings.The elastic element 204 that wheel rim 218 brings and the increase of the contact area between glass pane surface have improved the frictional force between sheave and sheet glass, allow to give sheet glass larger moment of torsion by shaft component, thereby increase the gravitation that pulls down that puts on sheet glass.In addition, the elasticity of flexure element 204 of sheave 232 allows wheel rim with respect to annular wheel hub 206 displacements, thereby alleviates the possible damage of sheet glass in downward drawing process.
Although this paper has described the pulling roll that is made of the sheave with elasticity of flexure element, be to be understood that other embodiments of sheave also can be expected.For example, Fig. 8 and 9 has represented the sheave 236 that formed by angled elastic element 204.Particularly, sheave 236 comprises annular wheel hub 206, and itself and a plurality of elastic element 204 that is extended by annular wheel hub 206 outward radials as above are integrally formed.Each elastic element comprises top 226 and bottom 227, and the top 226 of elastic element 204 is with respect to the angled α in bottom 227.The top 226 of elastic element 204 227 provides point of inflection with the intersection point on top 226 with respect to bottom 227 angulations in the bottom, has promoted to have the formation of the elastic element of required coefficient of elasticity.Particularly, the position of point of inflection and angle α can be selected the coefficient of elasticity that realizes that elastic element is required.Angle α between top 226 and bottom 227 can for, without limitation, approximately 10 the degree or even approximately 30 the degree.In some embodiments, angle α can be approximately 45 degree or even approximately 60 degree.
Sheave shown in Fig. 3-9 can keep the material of its mechanical characteristics to form by can be up to the about high temperature of 900 ℃ in running into the downward drawing process of glass the time.Suitable material comprises, without limitation, and metal, pottery, metal-base composites and mineral based material.For example, sheave can comprise by nickel-base alloy, and without limitation, Rene 41, and Haynes 282, or similarly nickel-base alloy forms.The example of suitable stupalith comprises, without limitation, and silicon nitride, silicon carbide, aluminum oxide, norbide, SIALON, or similar stupalith.Suitable mineral material comprises, without limitation, block mica material is as phlogopite.Sheave as shown in Fig. 3-9 can adopt traditional working method, for example electrodischarge machining(E.D.M.) (EDM) or water jet machining method.
Figure 10 has schematically shown an optional embodiment of sheave 238.Sheave 238 comprises annular wheel hub 206 and a plurality of elastic elements 204.In this embodiment, elastic element 204 is the staple fibres (namely in the coefficient of elasticity in 60lbf/mm to 2000lbf/mm scope) that are shaped to realize required coefficient of elasticity.But in this embodiment, elastic element 204 can form by optionally eroding the wheel hub material, thereby forms independently elastic element.The sheave 238 of the present embodiment material that shown in Fig. 3-9, the embodiment of sheave is identical by mentioned earlier forms.
After sheave formed, sheave can be with the coated materials of improving antioxidant property and wear resisting property.For example, sheave can be by Stellite 6, and Stellite 12 or other similarly can improve the antioxidant property of sheave and/or the coated material of wear resisting property applies.
Referring again to Fig. 2, single sheave 210 is assembled on shaft component 202, and the key 225 that forms on the keyway 250 that makes each sheave 210 and shaft component 202 is meshed.In the embodiment of pulling roll shown in Figure 2 200, sheave 210 is positioned to against shoulder 222 and is spun on by nut (show) on the screw thread 224 of shaft component that sheave is fixed on shaft component 202, thereby the conformability that forms pulling roll coats assembly 208.In some embodiments, each sheave is positioned on shaft component, make between adjacent sheave axial spacing S (being the spacing on coordinate axis z direction shown in Figure 2) can from approximately greater than 0.0mm to about 25mm or even from about 0.0mm to about 25mm.In some embodiments, the axial spacing S between adjacent sheave can be from about 0.75mm to about 6mm.Axial spacing S between adjacent sheave, together with at the spacing G between elastic element (shown in Figure 3) on single sheave, allowing chip to enter into conformability coats assembly 208 and passes conformability coating assembly, rather than embed the surface that conformability coats assembly, thereby prevent in the drawing process damage to sheet glass.
In the embodiment of pulling roll shown in Figure 2 200, when sheave was positioned on key 225, single sheave 210 was bonded and makes each sheave and the rotation of adjacent sheave depart from, and therefore the elastic element on axial adjacent sheave can be not aligned with each other.But in other embodiments, single sheave 210 may by bonding similarly, make the elastic element on axial adjacent sheave aligned with each other.
Referring now to Figure 1B and 11, in downward drawing forming of glass process, the pulling roll 200a of drawing assembly 150,200b at the first plane 149 and the second plane 152 contact glass plates 148, make free end 212 contact glass plates of elastic element 204 at least respectively.When each elastic element contact glass plate surperficial, elastic element radially inwardly, the direction of arrow 350 (namely towards) deflection towards the center of annular wheel hub 206, transmission comes from the moment of torsion of shaft component to sheet glass 148, thus downstream 151 drawing sheet glass.For example, as shown in figure 11, pulling roll is 153 rotations in the counterclockwise direction.Elastic element 204a and 204c do not have the surface 149 of contact glass plate 148, and therefore, elastic element 204a and 204c do not have deflection.But, when elastic element 204b rotation contacts as for the surface 149 of sheet glass 148, elastic element radially inwardly, towards the center deflection of annular wheel hub 206, when the shaft component of rotation applies torque on sheet glass by pulling roll, thus downstream 151 drawing glass.
Still with reference to Figure 11, in the situation that chip or other particulate matters are present in sheet glass 148 surfaces 149, for example particle 300, when sheet glass 148 downstream 151 drawing, the contact particle 300 elastic element 204 due to particle 300 axially to intrinsic deflection, thereby reduced the point load of particle 300 for sheet glass 148 surfaces 149, therefore alleviated the damage for sheet glass.In addition, particle 300 only limits to one group of elastic element that closely is connected of single elastic element or part for the arbitrfary point load on sheet glass 148 surfaces according to the size of particle.Therefore, remaining elastic element can keep contacting with sheet glass and continue to give the sheet glass drawing gravitation.
Be to be understood that pulling roll as herein described can be used for glass manufacturing process with drawing and/or guiding glass sheets.Particularly, the elastic element of sheave provides level and smooth resilient contact surfaces, and it does not cause glass pane surface and damages the ground contact glass plate.Because pulling roll is made of the material that is suitable for using under high temperature, pulling roll at high temperature extends and is difficult for decomposing or deviating to pollute particulate matter and/or the chip of glass drawing process when using.Further, the elastic element of sheave reduces the damage to sheet glass being axially, radially and tangentially enough elasticly particulate matter is wrapped up between elastic element promoting.
The elastic element of pulling roll described herein has increased roller conformability radially, thereby provides more uniform power to sheet glass.In addition, elastic element has also increased the contact area on roller surface, has reduced simultaneously contact pressure and shearing force for sheet glass.Especially, elastic element is alleviated or has been removed the point load that the glass pane surface particle causes, correspondingly, and the cracking of minimizing sheet glass and/or badly damaged.
The various modifications of the apparent embodiment described herein of those skilled in the art and distortion do not deviate from purport and the scope that will protect theme.Therefore, modification and the distortion of covering numerous embodiments described herein provide modification and the distortion that belongs in claims and equal deformation range thereof.
Claims (33)
1. the pulling roll of a drawing sheet glass in downward drawing technique, this pulling roll comprises:
Shaft component; With
The conformability that is positioned on shaft component coats assembly, and this conformability coats assembly and comprises that at least one is positioned at the sheave on shaft component, and described at least one sheave comprises:
Annular wheel hub; With
A plurality of elastic elements integrally formed with annular wheel hub, these a plurality of elastic elements are protruding by annular wheel hub, make base portion that the free end of each elastic element in a plurality of elastic elements is positioned to each elastic element from a plurality of elastic elements radially outward, in wherein said a plurality of elastic element, each has from about 2lbf/mm to the about radial elastic coefficient of 2000lbf/mm scope, when conformability coating assembly engages with the plane of sheet glass, at least a portion of a plurality of elastic elements radially inwardly, towards the center deflection of annular wheel hub, thereby prevent from damaging sheet glass.
2. the pulling roll of a drawing sheet glass in downward drawing technique, this pulling roll comprises:
Shaft component; With
The conformability that is positioned on shaft component coats assembly, and this conformability coats assembly and comprises a plurality of sheaves that are positioned on shaft component, wherein each sheave and adjacent sheave rotation offset in a plurality of sheaves, and in a plurality of sheaves, each sheave comprises:
Annular wheel hub; With
The elastic elements that a plurality of and annular wheel hub are integrally formed, these a plurality of elastic elements are protruding by annular wheel hub, make base portion that the free end of each elastic element in a plurality of elastic elements is positioned to each elastic element from a plurality of elastic elements radially outward, wherein:
In described a plurality of elastic element, each elastic element is along the reverse direction bending of the downward drawing sense of rotation of pulling roll between free end and base portion; With
In described a plurality of elastic element, each elastic element has from about 2lbf/mm to the about radial elastic coefficient of 2000lbf/mm scope, wherein, when conformability coating assembly engages with the plane of sheet glass, elastic element radially inwardly, towards the center deflection of annular wheel hub, thereby prevent from damaging sheet glass.
3. pulling roll as claimed in claim 1, is characterized in that, in described a plurality of elastic elements, each elastic element is crooked between free end and base portion.
4. pulling roll as claimed in claim 3, is characterized in that, each elastic element is crooked along the reverse direction of the downward drawing sense of rotation of pulling roll.
5. as claim 2 or pulling roll claimed in claim 3, it is characterized in that, in described a plurality of elastic elements, each elastic element has from about 10mm to the about radius-of-curvature of 80mm.
6. as claim 2 or pulling roll claimed in claim 3, it is characterized in that, in described a plurality of elastic elements, each elastic element has constant radius-of-curvature.
7. pulling roll as claimed in claim 3, is characterized in that, in described a plurality of elastic elements, each elastic element has compound radius-of-curvature.
8. as claim 1 or pulling roll claimed in claim 2, it is characterized in that, annular wheel hub has outside diameter d, makes 18mm≤d≤75mm.
9. as claim 1 or pulling roll claimed in claim 2, it is characterized in that, in described a plurality of elastic elements, each elastic element has thickness T along the circumferential direction, makes 0.50mm≤T≤3.0mm.
10. as claim 1 or pulling roll claimed in claim 2, it is characterized in that, in described a plurality of elastic elements between adjacent elastic element at along the circumferential direction separation distance G for making G 〉=0.01mm.
11. as claim 1 or pulling roll claimed in claim 2, it is characterized in that, conformability coats assembly and has D outer diameter, makes 60mm≤D≤200mm.
12. as claim 1 or pulling roll claimed in claim 2, it is characterized in that, in described a plurality of elastic elements, each elastic element has axial width t, makes 0.50mm≤t≤105mm.
13. pulling roll as claimed in claim 1 is characterized in that, at least one sheave comprises a plurality of sheaves.
14. as claim 2 or the described pulling roll of claim 13, it is characterized in that, the axial spacing S in a plurality of sheaves between each sheave is for making 0.0mm≤S≤25mm.
15. pulling roll as claimed in claim 1 is characterized in that, at least one sheave comprises along the circumferential direction rotation offset of a plurality of sheaves and each sheave and adjacent sheave.
16. as claim 1 or pulling roll claimed in claim 2, it is characterized in that, annular wheel hub comprise with shaft component on the keyway of the corresponding key engagement that forms.
17. as claim 1 or pulling roll claimed in claim 2, it is characterized in that, annular wheel hub comprise with shaft component on the key of the corresponding keyway engagement that forms.
18. as claim 1 or pulling roll claimed in claim 2, it is characterized in that, further comprise wheel rim, described wheel rim is connected the free end of each elastic element in a plurality of elastic elements described in single sheave with the free end of adjacent elastic element.
19. as claim 1 or pulling roll claimed in claim 2, it is characterized in that, in a plurality of elastic elements, each elastic element further comprises the contact feet integrally formed with each elastic element free end.
20. pulling roll as claimed in claim 1 is characterized in that, in a plurality of elastic elements, each elastic element comprises top and bottom, and its middle and upper part is angled with respect to the bottom.
21. pulling roll as claimed in claim 1 is characterized in that, conformability coats assembly by metallic substance, stupalith, or mineral material forms.
22. pulling roll as claimed in claim 1 is characterized in that, conformability coats assembly and is formed by nickel-base alloy.
23. as claim 1 or pulling roll claimed in claim 2, it is characterized in that, in a plurality of elastic elements, each has from about 0.25lbf/mm to the about axial elasticity coefficient of 150lbf/mm.
24. as claim 1 or pulling roll claimed in claim 2, it is characterized in that, in a plurality of elastic elements, each has from about 2lbf/mm to the about tangential coefficient of elasticity of 75lbf/mm.
25. a method that forms sheet glass, described method comprises:
Melten glass prepares burden to form melten glass;
Melten glass is configured as sheet glass;
The first surface of sheet glass is contacted with at least one pulling roll, transmit sheet glass with downstream, wherein at least one pulling roll comprises:
Shaft component; With
The conformability that is positioned on shaft component coats assembly, and this conformability coats assembly and comprises:
a plurality of sheaves that are positioned on shaft component, in a plurality of sheaves, each comprises the annular wheel hub integrally formed with a plurality of elastic elements, these a plurality of elastic elements are protruding from annular wheel hub, make base portion that the free end of each in a plurality of elastic elements is positioned to from a plurality of elastic elements each radially outward, in wherein said a plurality of elastic element, each has from about 2lbf/mm to the about radial elastic coefficient of 2000lbf/mm scope, when conformability coats the first surface of assembly contact glass plate, described elastic element is radially inside, center deflection towards annular wheel hub, thereby prevent from damaging sheet glass.
26. method as claimed in claim 25 is characterized in that, in a plurality of elastic elements, each elastic element is crooked between free end and base portion.
27. method as claimed in claim 25 is characterized in that, in a plurality of elastic elements, each elastic element has constant radius-of-curvature.
28. method as claimed in claim 25 is characterized in that, in a plurality of elastic elements, each elastic element has compound radius-of-curvature.
29. method as claimed in claim 25 is characterized in that, in a plurality of elastic elements, each elastic element has axial width t, makes 0.50mm≤t≤105mm.
30. method as claimed in claim 25 is characterized in that, in a plurality of elastic elements, each elastic element has thickness T along the circumferential direction, makes 0.50mm≤T≤3.0mm.
31. method as claimed in claim 25 is characterized in that, each sheave and adjacent sheave be rotation offset along the circumferential direction.
32. method as claimed in claim 25, it is characterized in that, in a plurality of sheaves, each sheave further comprises wheel rim, and described wheel rim is connected the free end of each elastic element in a plurality of elastic elements described in single sheave with the free end of adjacent elastic element.
33. method as claimed in claim 25 is characterized in that, in a plurality of elastic elements, each elastic element further comprises the contact feet integrally formed with each elastic element free end.
Applications Claiming Priority (2)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| USPCT/US2011/054525 | 2011-10-03 | ||
| PCT/US2011/054525 WO2013052026A1 (en) | 2011-10-03 | 2011-10-03 | Pulling rolls for use in glass manufacturing processes and glass manufacturing processes incorporating the same |
Publications (2)
| Publication Number | Publication Date |
|---|---|
| CN103113018A true CN103113018A (en) | 2013-05-22 |
| CN103113018B CN103113018B (en) | 2016-06-15 |
Family
ID=48044010
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN201210535746.3A Expired - Fee Related CN103113018B (en) | 2011-10-03 | 2012-10-08 | The pulling roll used in glass manufacturing process and the technology for making glass adopting it |
Country Status (4)
| Country | Link |
|---|---|
| JP (1) | JP6027383B2 (en) |
| CN (1) | CN103113018B (en) |
| TW (1) | TW201318981A (en) |
| WO (1) | WO2013052026A1 (en) |
Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN106242250A (en) * | 2016-07-27 | 2016-12-21 | 彩虹（合肥）液晶玻璃有限公司 | A kind of device and method adjusting glass plate warpage |
Families Citing this family (3)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| US9016093B2 (en) | 2012-11-13 | 2015-04-28 | Corning Incorporated | Pulling rolls with spring elements having increased angular length for use in glass manufacturing and processes incorporating the same |
| US9676651B2 (en) * | 2014-08-07 | 2017-06-13 | Corning Incorporated | Pull-roll cartridges for use in glass manufacturing processes and methods for making and using the same |
| JP2022091351A (en) * | 2020-12-09 | 2022-06-21 | 日本電気硝子株式会社 | Method for manufacturing glass film |
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2011
- 2011-10-03 WO PCT/US2011/054525 patent/WO2013052026A1/en active Application Filing
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2012
- 2012-10-03 TW TW101136571A patent/TW201318981A/en unknown
- 2012-10-03 JP JP2012221133A patent/JP6027383B2/en not_active Expired - Fee Related
- 2012-10-08 CN CN201210535746.3A patent/CN103113018B/en not_active Expired - Fee Related
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| JPH10291826A (en) * | 1997-04-16 | 1998-11-04 | Hoya Corp | Production of glass pane and apparatus for production therefor |
| CN1549795A (en) * | 2001-07-30 | 2004-11-24 | 环球咨询公司 | Tightening a fiber roll cover |
| CN1649800A (en) * | 2002-03-22 | 2005-08-03 | 康宁股份有限公司 | Pulling rolls for use in manufacturing sheet glass |
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| CN106242250A (en) * | 2016-07-27 | 2016-12-21 | 彩虹（合肥）液晶玻璃有限公司 | A kind of device and method adjusting glass plate warpage |
| CN106242250B (en) * | 2016-07-27 | 2019-07-12 | 彩虹（合肥）液晶玻璃有限公司 | A kind of device and method adjusting glass slab warping |
Also Published As
| Publication number | Publication date |
|---|---|
| WO2013052026A1 (en) | 2013-04-11 |
| JP6027383B2 (en) | 2016-11-16 |
| TW201318981A (en) | 2013-05-16 |
| JP2013079188A (en) | 2013-05-02 |
| CN103113018B (en) | 2016-06-15 |
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