WO2017205364A1 - Système et procédé de gestion de perturbation de cylindre - Google Patents

Système et procédé de gestion de perturbation de cylindre Download PDF

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Publication number
WO2017205364A1
WO2017205364A1 PCT/US2017/033980 US2017033980W WO2017205364A1 WO 2017205364 A1 WO2017205364 A1 WO 2017205364A1 US 2017033980 W US2017033980 W US 2017033980W WO 2017205364 A1 WO2017205364 A1 WO 2017205364A1
Authority
WO
WIPO (PCT)
Prior art keywords
roll
glass
ribbon
glass ribbon
vessel
Prior art date
Application number
PCT/US2017/033980
Other languages
English (en)
Inventor
Tomohiro ABURADA
Jae Hyun Yu
Original Assignee
Corning Incorporated
Priority date (The priority date 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 date listed.)
Filing date
Publication date
Application filed by Corning Incorporated filed Critical Corning Incorporated
Priority to KR1020187037472A priority Critical patent/KR20190001607A/ko
Priority to JP2018561277A priority patent/JP2019516661A/ja
Priority to CN201780032503.9A priority patent/CN109153592A/zh
Publication of WO2017205364A1 publication Critical patent/WO2017205364A1/fr

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Classifications

    • 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
    • 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
    • C03B18/00—Shaping glass in contact with the surface of a liquid
    • C03B18/02—Forming sheets
    • C03B18/20—Composition of the atmosphere above the float bath; Treating or purifying the atmosphere above the float bath
    • 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
    • C03B35/188—Rollers specially adapted for supplying a gas, e.g. porous or foraminous rollers with internal air supply
    • 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
    • C03B17/064—Forming glass sheets by the overflow downdraw fusion process; Isopipes therefor
    • Y—GENERAL TAGGING OF NEW TECHNOLOGICAL DEVELOPMENTS; GENERAL TAGGING OF CROSS-SECTIONAL TECHNOLOGIES SPANNING OVER SEVERAL SECTIONS OF THE IPC; TECHNICAL SUBJECTS COVERED BY FORMER USPC CROSS-REFERENCE ART COLLECTIONS [XRACs] AND DIGESTS
    • Y02—TECHNOLOGIES OR APPLICATIONS FOR MITIGATION OR ADAPTATION AGAINST CLIMATE CHANGE
    • Y02P—CLIMATE CHANGE MITIGATION TECHNOLOGIES IN THE PRODUCTION OR PROCESSING OF GOODS
    • Y02P40/00—Technologies relating to the processing of minerals
    • Y02P40/50—Glass production, e.g. reusing waste heat during processing or shaping
    • Y02P40/57—Improving the yield, e-g- reduction of reject rates

Definitions

  • the present disclosure relates generally to systems and methods for glass roll management and more particularly to systems and methods for glass roll management in the event of an upset.
  • Embodiments disclosed herein include a method for responding to an upset event in the production of a glass article.
  • the method includes monitoring the amount of glass on the outer circumference of at least one roll contacting a glass ribbon.
  • the method also includes remotely removing the at least one roll from contact with the glass ribbon if the amount of glass on the outer circumference of the roll exceeds a predetermined amount.
  • Embodiments disclosed herein also include a system for responding to an upset event in the production of a glass article.
  • the system includes a mechanism for monitoring the amount of glass on the outer circumference of at least one roll contacting a glass ribbon.
  • the system also includes a mechanism for remotely removing the at least one roll from contact with the glass ribbon if the amount of glass on the outer circumference of the roll exceeds a predetermined amount.
  • FIG. 1 is a schematic view of an example fusion down draw glass making process
  • FIG. 2 is a front view of a portion of a glass ribbon and a pair of edge rolls and a pair of pulling rolls contacting the glass ribbon according to embodiments disclosed herein;
  • FIGS. 3 A and 3B are side cutaway views of a portion of a glass ribbon and a pair of edge rolls and a pair of pulling rolls being removed from contact with the glass ribbon in the thickness direction of the ribbon according to embodiments disclosed herein;
  • FIG. 4 is front view of a portion of a glass ribbon and a pair of edge rolls and a pair of pulling rolls being moved away from the ribbon in the widthwise direction of the ribbon according to embodiments disclosed herein;
  • FIGS. 5A and 5B are front cutaway views of a portion of a wall of an enclosure and an edge roll and a pulling roll being removed from the enclosure according to embodiments disclosed herein;
  • FIG. 6 is a flowchart illustrating method steps according to embodiments disclosed herein.
  • Ranges can be expressed herein as from “about” one particular value, and/or to "about” another particular value. When such a range is expressed, another embodiment includes from the one particular value and/or to the other particular value. Similarly, when values are expressed as approximations, for example by use of the antecedent "about,” it will be understood that the particular value forms another embodiment. It will be further understood that the endpoints of each of the ranges are significant both in relation to the other endpoint, and independently of the other endpoint.
  • upset refers to any condition under which a glass manufacturing process is interrupted such that high quality glass articles, such as glass sheets, cannot be made for at least a temporary period.
  • upsets include conditions under which formation of a high quality glass article at least temporarily falls significantly outside of predetermined specifications, including conditions where an enclosure housing a molten glass ribbon begins to fill up with molten glass in an undesirable manner.
  • edge roll refers to a roll or roller intended to come into contact with a glass sheet or ribbon, including a molten glass sheet or ribbon, such as, for example, a molten glass sheet or ribbon having a viscosity ranging from about 10 4 poise to about 10 13 poise.
  • the edge roll can, for example, provide a tension in at least a widthwise direction of a glass sheet or ribbon.
  • an edge roll may be expected to comprise a refractory material and may further be expected to be idle in that it does not impart a significant external rotational force or torque on the glass sheet or ribbon.
  • the term "pulling roll” refers to a roll or roller intended to come into contact with a glass sheet or ribbon, including a molten glass sheet or ribbon, such as, for example, a molten glass sheet or ribbon having a viscosity ranging from about 10 7 6 poise to about 10 14 5 poise.
  • the pulling roll can, for example, provide a tension in at least a widthwise direction of a glass sheet or ribbon.
  • the pulling roll can also, for example, provide for a pulling force or tension in a lengthwise direction of a glass sheet or ribbon (i.e., in a draw direction of the glass sheet or ribbon).
  • a pulling roll may be expected to comprise a refractory material and may further be expected to be driven (e.g. , by a motor, such as a servo motor) in that it exhibits a significant external rotational force or torque when applied to the glass sheet or ribbon.
  • a motor such as a servo motor
  • at least two pulling rolls are in contact with a molten glass sheet or ribbon they may be driven to exhibit the same or different external rotational forces or torques.
  • different pulling rolls may exhibit the same or different torques or rotational velocities.
  • roll may refer to at least one of an edge roll and a pulling roll.
  • the glass manufacturing apparatus 10 can comprise a glass melting furnace 12 that can include a melting vessel 14.
  • glass melting furnace 12 can optionally include one or more additional components such as heating elements (e.g. , combustion burners or electrodes) that heat raw materials and convert the raw materials into molten glass.
  • heating elements e.g. , combustion burners or electrodes
  • glass melting furnace 12 may include thermal management devices (e.g., insulation components) that reduce heat lost from a vicinity of the melting vessel.
  • glass melting furnace 12 may include electronic devices and/or electromechanical devices that facilitate melting of the raw materials into a glass melt.
  • glass melting furnace 12 may include support structures (e.g., support chassis, support member, etc.) or other components.
  • Glass melting vessel 14 is typically comprised of refractory material, such as a refractory ceramic material, for example a refractory ceramic material comprising alumina or zirconia. In some examples glass melting vessel 14 may be constructed from refractory ceramic bricks. Specific embodiments of glass melting vessel 14 will be described in more detail below.
  • the glass melting furnace may be incorporated as a component of a glass manufacturing apparatus to fabricate a glass substrate, for example a glass ribbon of a continuous length.
  • the glass melting furnace of the disclosure may be incorporated as a component of a glass manufacturing apparatus comprising a slot draw apparatus, a float bath apparatus, a down-draw apparatus such as a fusion process, an up- draw apparatus, a press-rolling apparatus, a tube drawing apparatus or any other glass manufacturing apparatus that would benefit from the aspects disclosed herein.
  • FIG. 1 schematically illustrates glass melting furnace 12 as a component of a fusion down-draw glass manufacturing apparatus 10 for fusion drawing a glass ribbon for subsequent processing into individual glass sheets.
  • the glass manufacturing apparatus 10 can optionally include an upstream glass manufacturing apparatus 16 that is positioned upstream relative to glass melting vessel 14. In some examples, a portion of, or the entire upstream glass manufacturing apparatus 16, may be incorporated as part of the glass melting furnace 12.
  • the upstream glass manufacturing apparatus 16 can include a storage bin 18, a raw material delivery device 20 and a motor 22 connected to the raw material delivery device.
  • Storage bin 18 can store a quantity of raw materials 24 that can be fed into melting vessel 14 of glass melting furnace 12, as indicated by arrow 26.
  • Raw materials 24 typically comprise one or more glass forming metal oxides and one or more modifying agents.
  • raw material delivery device 20 can be powered by motor 22 such that raw material delivery device 20 delivers a predetermined amount of raw materials 24 from the storage bin 18 to melting vessel 14.
  • motor 22 can power raw material delivery device 20 to introduce raw materials 24 at a controlled rate based on a level of molten glass sensed downstream from melting vessel 14.
  • Glass manufacturing apparatus 10 can also optionally include a downstream glass manufacturing apparatus 30 positioned downstream relative to glass melting furnace 12. In some examples, a portion of downstream glass manufacturing apparatus 30 may be incorporated as part of glass melting furnace 12. In some instances, first connecting conduit 32 discussed below, or other portions of the downstream glass manufacturing apparatus 30, may be incorporated as part of glass melting furnace 12. Elements of the downstream glass manufacturing apparatus, including first connecting conduit 32, may be formed from a precious metal. Suitable precious metals include platinum group metals selected from the group of metals consisting of platinum, iridium, rhodium, osmium, ruthenium and palladium, or alloys thereof.
  • downstream components of the glass manufacturing apparatus may be formed from a platinum-rhodium alloy including from about 70 to about 90% by weight platinum and from about 10% to about 30% by weight rhodium.
  • platinum-rhodium alloy including from about 70 to about 90% by weight platinum and from about 10% to about 30% by weight rhodium.
  • suitable metals can include molybdenum, palladium, rhenium, tantalum, titanium, tungsten and alloys thereof.
  • Downstream glass manufacturing apparatus 30 can include a first conditioning (i.e., processing) vessel, such as fining vessel 34, located downstream from melting vessel 14 and coupled to melting vessel 14 by way of the above-referenced first connecting conduit 32.
  • a first conditioning (i.e., processing) vessel such as fining vessel 34
  • molten glass 28 may be gravity fed from melting vessel 14 to fining vessel 34 by way of first connecting conduit 32.
  • gravity may cause molten glass 28 to pass through an interior pathway of first connecting conduit 32 from melting vessel 14 to fining vessel 34.
  • other conditioning vessels may be positioned downstream of melting vessel 14, for example between melting vessel 14 and fining vessel 34.
  • a conditioning vessel may be employed between the melting vessel and the fining vessel wherein molten glass from a primary melting vessel is further heated to continue the melting process, or cooled to a temperature lower than the temperature of the molten glass in the melting vessel before entering the fining vessel.
  • Bubbles may be removed from molten glass 28 within fining vessel 34 by various techniques.
  • raw materials 24 may include multivalent compounds (i.e. fining agents) such as tin oxide that, when heated, undergo a chemical reduction reaction and release oxygen.
  • fining agents include without limitation arsenic, antimony, iron and cerium.
  • Fining vessel 34 is heated to a temperature greater than the melting vessel temperature, thereby heating the molten glass and the fining agent.
  • Oxygen bubbles produced by the temperature-induced chemical reduction of the fining agent(s) rise through the molten glass within the fining vessel, wherein gases in the molten glass produced in the melting furnace can diffuse or coalesce into the oxygen bubbles produced by the fining agent.
  • the enlarged gas bubbles can then rise to a free surface of the molten glass in the fining vessel and thereafter be vented out of the fining vessel.
  • the oxygen bubbles can further induce mechanical mixing of the molten glass in the fining vessel.
  • Downstream glass manufacturing apparatus 30 can further include another conditioning vessel such as a mixing vessel 36 for mixing the molten glass.
  • Mixing vessel 36 may be located downstream from the fining vessel 34.
  • Mixing vessel 36 can be used to provide a homogenous glass melt composition, thereby reducing cords of chemical or thermal inhomogeneity that may otherwise exist within the fined molten glass exiting the fining vessel.
  • fining vessel 34 may be coupled to mixing vessel 36 by way of a second connecting conduit 38.
  • molten glass 28 may be gravity fed from the fining vessel 34 to mixing vessel 36 by way of second connecting conduit 38. For instance, gravity may cause molten glass 28 to pass through an interior pathway of second connecting conduit 38 from fining vessel 34 to mixing vessel 36.
  • mixing vessel 36 is shown downstream of fining vessel 34, mixing vessel 36 may be positioned upstream from fining vessel 34.
  • downstream glass manufacturing apparatus 30 may include multiple mixing vessels, for example a mixing vessel upstream from fining vessel 34 and a mixing vessel downstream from fining vessel 34. These multiple mixing vessels may be of the same design, or they may be of different designs.
  • Downstream glass manufacturing apparatus 30 can further include another conditioning vessel such as delivery vessel 40 that may be located downstream from mixing vessel 36.
  • Delivery vessel 40 may condition molten glass 28 to be fed into a downstream forming device.
  • delivery vessel 40 can act as an accumulator and/or flow controller to adjust and/or provide a consistent flow of molten glass 28 to forming body 42 by way of exit conduit 44.
  • mixing vessel 36 may be coupled to delivery vessel 40 by way of third connecting conduit 46.
  • molten glass 28 may be gravity fed from mixing vessel 36 to delivery vessel 40 by way of third connecting conduit 46.
  • gravity may drive molten glass 28 through an interior pathway of third connecting conduit 46 from mixing vessel 36 to delivery vessel 40.
  • Downstream glass manufacturing apparatus 30 can further include forming apparatus 48 comprising the above-referenced forming body 42 and inlet conduit 50.
  • Exit conduit 44 can be positioned to deliver molten glass 28 from delivery vessel 40 to inlet conduit 50 of forming apparatus 48.
  • exit conduit 44 may be nested within and spaced apart from an inner surface of inlet conduit 50, thereby providing a free surface of molten glass positioned between the outer surface of exit conduit 44 and the inner surface of inlet conduit 50.
  • Forming body 42 in a fusion down draw glass making apparatus can comprise a trough 52 positioned in an upper surface of the forming body and converging forming surfaces 54 that converge in a draw direction along a bottom edge 56 of the forming body.
  • Molten glass delivered to the forming body trough via delivery vessel 40, exit conduit 44 and inlet conduit 50 overflows side walls of the trough and descends along the converging forming surfaces 54 as separate flows of molten glass.
  • the separate flows of molten glass join below and along bottom edge 56 to produce a single ribbon of glass 58 that is drawn in a draw direction 60 from bottom edge 56 by applying tension to the glass ribbon, such as by gravity, edge rolls 72 and pulling rolls 82, to control the dimensions of the glass ribbon as the glass cools and a viscosity of the glass increases. Accordingly, glass ribbon 58 goes through a visco-elastic transition and acquires mechanical properties that give the glass ribbon 58 stable dimensional characteristics.
  • Glass ribbon 58 may in some embodiments be separated into individual glass sheets 62 by a glass separation apparatus 100 in an elastic region of the glass ribbon.
  • a robot 64 may then transfer the individual glass sheets 62 to a conveyor system using gripping tool 65, whereupon the individual glass sheets may be further processed.
  • FIG. 2 illustrates a front view of a portion of a glass ribbon 58 and a pair of edge rolls 72 and a pair of pulling rolls 82 contacting the glass ribbon 58 according to
  • FIG. 2 shows a pair of edge rolls 72 and a pair of pulling rolls 82 on each side of the ribbon
  • embodiments disclosed herein may include or be applied to any number of edge rolls and/or pulling rolls in any configuration (e.g., edge rolls above pulling rolls, as shown in FIG. 2, or edge rolls below pulling rolls, such as edge rolls alternating with pulling rolls along the length of the ribbon in the draw direction, etc.).
  • edge rolls 72 are each part of an edge roll assembly 70 that includes a support shaft 74 attached to the edge roll 72, such that the edge roll 72 can be mounted on the support shaft 74 and coaxial thereto.
  • the support shaft 74 can be, for example, made of metal or other materials that withstand temperatures at which a glass ribbon 58 can be drawn.
  • the support shaft 74 can, in turn, be connected to a motor 75, such as a servo motor, that is mounted on a slideable mounting block 76 that can move laterally along a slide 77 in order to enable the edge roll 72 to be moved relative to the glass ribbon 58 via, for example, operation of the motor 75.
  • Edge roll assembly 70 may also include an adjustment mechanism 78 to enable precise and measured movement of edge roll 72, e.g., in an incremental manner, based for example, on interfacing gears, grooves or the like.
  • pulling rolls 82 are each part of a pulling roll assembly 80 that includes a support shaft 84 attached to the pulling roll 82, such that the pulling roll 82 can be mounted on the support shaft 84 and coaxial thereto.
  • the support shaft 84 can be, for example, made of metal or other materials that withstand temperatures at which a glass ribbon 58 can be drawn.
  • the support shaft 84 can, in turn, be connected to a motor 85, such as a servo motor, that is mounted on a slideable mounting block 86 that can move laterally along a slide 87 in order to enable the pulling roll 82 to be moved relative to the glass ribbon 58 via, for example, operation of the motor 85 (the motor may or may not be the same motor that provides the force to turn the associated roll).
  • Pulling roll assembly 80 may also include an adjustment mechanism 88 to enable precise and measured movement of pulling roll 82, e.g., in an incremental manner, based for example, on interfacing gears, grooves or the like.
  • FIGS. 3 A and 3B illustrate side cutaway views of a portion of a glass ribbon 58 and a pair of edge rolls 72 and a pair of pulling rolls 82 in the process of being removed from contact with the glass ribbon 58 in the thickness direction of the ribbon according to embodiments disclosed herein.
  • edge rolls 72 and pulling rolls 82 contact the glass ribbon 58 on opposite sides of the glass ribbon 58.
  • edge rolls 72 and pulling rolls 82 have been removed from contact with the glass ribbon 58 by moving the rolls away from the glass ribbon 58 in opposing directions relative to the thickness direction of the glass ribbon 58, as illustrated by arrows 90 with respect to the edge rolls 72 and by arrows 95 with respect to the pulling rolls 82.
  • FIG. 4 illustrates a front view of a portion of a glass ribbon 58 and a pair of edge rolls 72 and a pair of pulling rolls 82 in the process of being moved away from the ribbon in the widthwise direction of the glass ribbon 58 according to embodiments disclosed herein.
  • edge rolls 72 move in the direction of arrows 92 as a result of lateral movement of slideable mounting block 76 along slide 77.
  • pulling rolls 82 move in the direction of arrows 97 as a result of lateral movement of slideable mounting block 86 along slide 87.
  • FIGS. 3A and 3B can be used in concert with the embodiment illustrated in FIG. 4 to remove the edge rolls 72 and/or the pulling rolls 82 from contact with the glass ribbon 58, first by moving the rolls away from the glass ribbon 58 in opposing directions relative to the thickness direction of the glass ribbon 58 (as shown, for example, in FIGS. 3A and 3B) and then subsequently moving the rolls away from the ribbon in the widthwise direction of the glass ribbon 58 (as shown, for example, in FIG. 4).
  • FIGS. 5 A and 5B illustrate front cutaway views of a portion of a wall 100 of an enclosure housing a glass ribbon (not shown in FIGS. 5A and 5B) and an edge roll 72 and a pulling roll 82 in the process of being removed from the enclosure according to embodiments disclosed herein.
  • seal plates 102 and 104 can be first moved or removed, for example, by remote control or manually, in order to facilitate movement of edge rolls 72 and/or pulling rolls 82 from enclosure.
  • Edge rolls 72 can then move in the direction of arrow 94 as a result of lateral movement of slideable mounting block 76 along slide 77.
  • pulling rolls 82 can move in the direction of arrow 99 as a result of lateral movement of slideable mounting block 86 along slide 87.
  • FIG. 6 is a flowchart illustrating method steps according to embodiments disclosed herein. Specifically, the flowchart of FIG. 6 shows exemplary steps for responding to an upset event according to embodiments disclosed herein.
  • hexagon 200 represents a stable process in the manufacture of a glass article, such as a glass sheet.
  • Box 202 represents an upset or upset event, as defined herein. The upset may be detected, for example, by an operator and/or by a process control system that is configured to detect an upset event.
  • Box 204 represents a step of increasing a gas flow, such as air flow, around at least one roll, such as at least one edge roll and/or at least one pulling roll, such as the edge rolls 72 and pulling rolls 82 illustrated in FIG. 2.
  • Such increase in gas flow can, for example, be accomplished by at least one of flowing more air throughout the enclosure and flowing air through nozzles or orifices that are directed toward the at least one edge roll and/or at least one pulling roll.
  • Such increase of gas flow can occur while the at least one roll is still in contact with the glass ribbon and it can also continue to occur after the at least one roll is removed from contact with the glass ribbon. While some amount of gas, such as air, may already flow in an enclosure housing the glass ribbon, increasing the flow rate of the gas can help minimize or prevent wrapping of glass around a roll, such as an edge roll or pulling roll.
  • Increasing the gas flow can be accomplished remotely, such as by an operator or process control system activating, by remote control, an automated mechanism to increase the gas flow around the at least one roll to be above a predetermined level.
  • the degree of glass wrapping around a roll can, in some embodiments, be a function of the viscosity of the glass ribbon in closest proximity to the roll in the sense that the amount of adhesion between the glass and the roll may be, to at least some extent, a function of the viscosity of the glass, such as when the viscosity of the glass ribbon, at the point of contact with the roll, ranges from about 10 4 poise to about 10 14 5 poise, such as from about 10 7 6 poise to about 10 13 poise.
  • diamond 206 represents a first decision point with respect to wrapping of glass around at least one roll, such as at least one edge roll and/or at least one pulling roll. Specifically, if the amount of glass on the outer circumference of the roll exceeds a predetermined amount, such as when the glass on the outer circumference has a radial thickness that exceeds the thickness of the glass ribbon, the at least one roll can be removed from contact with the glass ribbon, as represented by box 208 and shown, for example, in FIGS. 2-4 with respect to edge rolls 72 and pulling rolls 82.
  • Determination of whether the amount of glass on the outer surface of at least one roll exceeds a predetermined amount can be accomplished, for example, by monitoring the amount of glass on the outer circumference of at least one roll by using, for example, a camera or other monitoring device, which can, in turn, be monitored by an operator and/or be included as a component of a process control system. Removal of the at least one roll can, for example, be accomplished remotely, such as by an operator or process control system activating, by remote control, an automated mechanism to remove the at least one roll from contact with the glass ribbon.
  • expedited removal of at least one roll may not be selected as part of remaining steps of an upset recovery procedure, as represented by box 218.
  • the at least one roll may still be removed at some point but, if the amount of glass on the outer circumference of the roll does not exceed a predetermined amount, roll removal may have a lower relative priority in an upset recovery procedure and may, for example, be performed manually or remotely through use of an automated system.
  • a stable process for manufacturing a glass article may be resumed, as represented by hexagon 220.
  • Diamond 210 represents a second decision point with respect to removing the at least one edge roll from an enclosure housing the glass ribbon and the at least one edge roll. Specifically, if upset conditions in the enclosure exceed a predetermined threshold, such as where irreparable damage to at least one roll is expected to be imminent, the at least one roll can be removed from the enclosure, as represented by box 212 and shown, for example, in FIGS. 5 A and 5B with respect to edge rolls 72 and pulling rolls 82. Removal of the at least one roll can, for example, be accomplished remotely, such as by an operator or process control system activating, by remote control, an automated mechanism to remove the at least one roll from the enclosure. Such removal can also include an operator or process control system activating an automated mechanism to remove sealing components, such as seal plates 102 and 104 in FIG. 5 A, in order to facilitate removal of the at least one roll from the enclosure.
  • a predetermined threshold such as where irreparable damage to at least one roll is expected to be imminent
  • Removal of the at least one roll can, for example, be accomplished remotely,
  • upset conditions in the enclosure housing the glass ribbon do not exceed a predetermined threshold
  • expedited removal of at least one roll from the enclosure may not be selected as part of remaining steps of an upset recovery procedure.
  • the at least one roll can still be removed from the enclosure at some point, but if upset conditions in the enclosure housing the glass ribbon do not exceed a predetermined amount, roll removal from the enclosure may have a lower relative priority in an upset recovery procedure and may, for example, be performed manually or remotely through use of an automated system.
  • the at least one roll After the at least one roll has been removed from the enclosure, it can be replaced by at least one replacement roll, as represented by box 214, such as by positioning the replacement roll on a support shaft when the roll assembly is outside of the enclosure. Once the at least one replacement roll has been positioned on a support shaft, the roll assembly can be repositioned back inside the enclosure, as represented by box 216.

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  • Chemical & Material Sciences (AREA)
  • Engineering & Computer Science (AREA)
  • Materials Engineering (AREA)
  • Organic Chemistry (AREA)
  • Re-Forming, After-Treatment, Cutting And Transporting Of Glass Products (AREA)
  • Mechanical Engineering (AREA)

Abstract

L'invention concerne un procédé et un système permettant de répondre à un événement de perturbation au cours de la production d'un article en verre. Le procédé et le système comprennent la surveillance de la quantité de verre sur la circonférence externe d'au moins un cylindre en contact avec un ruban de verre et comprennent en outre la séparation à distance dudit cylindre en contact avec le ruban de verre si la quantité de verre sur la circonférence externe du cylindre dépasse une quantité prédéfinie.
PCT/US2017/033980 2016-05-25 2017-05-23 Système et procédé de gestion de perturbation de cylindre WO2017205364A1 (fr)

Priority Applications (3)

Application Number Priority Date Filing Date Title
KR1020187037472A KR20190001607A (ko) 2016-05-25 2017-05-23 롤 업셋 관리를 위한 시스템 및 방법
JP2018561277A JP2019516661A (ja) 2016-05-25 2017-05-23 ロールのアップセット管理のためのシステム及び方法
CN201780032503.9A CN109153592A (zh) 2016-05-25 2017-05-23 用于辊混乱管理的系统和方法

Applications Claiming Priority (2)

Application Number Priority Date Filing Date Title
US201662341248P 2016-05-25 2016-05-25
US62/341,248 2016-05-25

Publications (1)

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WO2017205364A1 true WO2017205364A1 (fr) 2017-11-30

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PCT/US2017/033980 WO2017205364A1 (fr) 2016-05-25 2017-05-23 Système et procédé de gestion de perturbation de cylindre

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KR (1) KR20190001607A (fr)
CN (1) CN109153592A (fr)
TW (1) TW201802043A (fr)
WO (1) WO2017205364A1 (fr)

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CN114516717A (zh) * 2022-03-04 2022-05-20 甘肃旭康材料科技有限公司 牵引轮间距调节系统及玻璃生产线

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