Method and apparatus for producing glass ribbon

Abstract

The glass manufacturing apparatus includes a feeding device positioned at an upstream end of a travel path extending in a travel direction. The feeding device directs a glass ribbon along the travel path. A first guide device is positioned adjacent to a first side of the travel path and guides the glass ribbon from a first orientation to a second orientation. A second guide device is positioned adjacent to the first side of the travel path downstream from the first guide device. The second guide device extends along an axis and contacts the glass ribbon across a width of the glass ribbon perpendicular to the travel direction. The second guide device moves relative to the first guide device along multiple guide paths perpendicular to the axis. A method of manufacturing glass is provided.

Description

CROSS-REFERENCE TO RELATED APPLICATIONS

[0001] This application claims the benefit of priority under 35 U.S.C. § 119 of U.S. Provisional Application No. 63 / 422,152, filed November 3, 2022, the contents of which are incorporated by reference in their entirety. [Technical Field]

[0002] The present disclosure relates generally to an apparatus and method for producing a glass ribbon, and more particularly to a method for producing a glass ribbon using a guide apparatus. [Background technology]

[0003] It is known to produce glass ribbons using glass manufacturing devices. Conventional forming devices are known to operate by drawing down a constant amount of molten material from a glass ribbon forming device as a glass ribbon. However, the glass ribbon may emerge with warping across the width of the glass ribbon, particularly for glass ribbons below a certain thickness. The warping is undesirable and can reduce the quality of the glass ribbon. Summary of the Invention

[0004] The following presents a simplified summary of the disclosure in order to provide a basic understanding of some aspects described in the detailed description.

[0005] A method of manufacturing glass using a guider is described. For example, a glass ribbon can be redirected by a turning device to move from a vertical orientation to a horizontal orientation. Once the horizontal orientation is reached, a guider can contact the glass ribbon and apply tension. Applying tension to the glass ribbon can reduce warpage in the glass ribbon. Furthermore, the position of the guider relative to the glass ribbon can be adjusted; that is, the guider can be movable along multiple guide paths. In this manner, the guider can be positioned to change the amount of tension applied to the glass ribbon. Furthermore, by adjusting the position of the guider, the guider can accommodate variations in the glass ribbon, such as the thickness of the glass ribbon, the position of the glass ribbon relative to the guider, etc.

[0006] In an aspect, a glass manufacturing apparatus can include a feeding device positioned at an upstream end of a travel path extending in a travel direction. The feeding device can direct the glass ribbon along the travel path in the travel direction of the feeding device. The glass manufacturing apparatus can include a first guide device positioned adjacent to a first side of the travel path and configured to guide the glass ribbon from a first orientation to a second orientation different from the first orientation. The glass manufacturing apparatus can include a second guide device positioned adjacent to the first side of the travel path downstream from the first guide device. The second guide device can extend along an axis and contact the glass ribbon across a width of the glass ribbon perpendicular to the travel direction. The second guide device can move relative to the first guide device along multiple guide paths perpendicular to the axis.

[0007] In an aspect, the glass manufacturing apparatus can include a support bracket attached to the first guide device and the second guide device, wherein the support bracket and the second guide device can move relative to the first guide device.

[0008] In an aspect, the support bracket can include a mounting arm attached to a first guide device at a first location on the mounting arm and attached to a second guide device at a second location on the mounting arm. The mounting arm can include an elongated opening extending along an opening axis parallel to a first guide path of the plurality of guide paths and configured to receive a fastener therethrough such that the mounting arm can translate along the opening axis.

[0009] In an aspect, the support bracket can include an adjustment member having a channel capable of receiving an elongated guide arm therein. The elongated guide arm can be attached to an end of the first guide device. The adjustment member can move along the elongated guide arm along a second guide path of the plurality of guide paths.

[0010] In an embodiment, the first guide path and the second guide path may form an angle within a range of about 45 degrees to about 135 degrees.

[0011] In an aspect, the support bracket can include a retention block including a block opening having an end of the second inductor received therein. The block opening can be bounded on a first side and unbounded on an opposite second side by a wall of the retention block.

[0012] In an embodiment, the first directing device can include a gas bearing spaced apart from the travel path and configured to direct gas toward the travel path to guide the glass ribbon.

[0013] In an embodiment, the second directing device can include a roller extending along an axis and configured to contact the first major surface of the glass ribbon.

[0014] In an aspect, a glass manufacturing apparatus may include a feeding device positioned at an upstream end of a traveling path extending in a traveling direction. The feeding device may direct the glass ribbon along the traveling path in the traveling direction of the feeding device. The glass manufacturing apparatus may include a first guide device positioned adjacent to a first side of the traveling path and configured to guide the glass ribbon from a first orientation to a second orientation different from the first orientation. The glass manufacturing apparatus may include a second guide device positioned adjacent to the first side of the traveling path downstream from the first guide device. The second guide device may contact the glass ribbon across a width of the glass ribbon perpendicular to the traveling direction. The glass manufacturing apparatus may include a support bracket attached to the first guide device and the second guide device. The support bracket may move the second guide device relative to the first guide device along a first guide path parallel to the first orientation of the glass ribbon and a second guide path forming an angle with respect to the first guide path within a range of about 45 degrees to about 135 degrees.

[0015] In aspects, the support bracket can include a mounting arm attached to a first guide device at a first location on the mounting arm and attached to a second guide device at a second location on the mounting arm. The mounting arm can include an elongated opening that extends along an opening axis that is parallel to the first guide path and that is configured to receive a fastener therethrough such that the mounting arm can be translatable along the opening axis.

[0016] In an aspect, the support bracket can include an adjustment member having a channel within which an elongated guide arm is received. The elongated guide arm can be attached to an end of the first guide device. The adjustment member can move along the elongated guide arm along the second guide path.

[0017] In an aspect, the support bracket can include a retention block including a block opening having an end of the second inductor received therein. The block opening can be bounded on a first side and unbounded on an opposite second side by a wall of the retention block.

[0018] In an aspect, the support bracket can include a retention block including a block opening having an end of the second inductor received therein. The block opening can be bounded on a first side and unbounded on an opposite second side by a wall of the retention block.

[0019] In an embodiment, the first directing device can include a gas bearing spaced apart from the travel path and configured to direct gas toward the travel path to guide the glass ribbon.

[0020] In an aspect, the second directing device can include a roller configured to contact the first major surface of the glass ribbon. The second directing device can be configured to apply tension to the glass ribbon to reduce warpage of the glass ribbon.

[0021] In an embodiment, a method of manufacturing glass can include moving a glass ribbon along a travel path in a travel direction. The method can include directing the glass ribbon from a first orientation to a second orientation different from the first orientation by engaging the glass ribbon with a first guide device positioned adjacent a first side of the travel path. The method can include contacting the glass ribbon with a second guide device positioned downstream from the first guide device across a width of the glass ribbon perpendicular to the travel direction. The method can include adjusting a position of the second guide device relative to the glass ribbon by moving the second guide device along one or more of a first guide path parallel to the first orientation of the glass ribbon or a second guide path forming an angle with the first guide path within a range of about 45 degrees to about 135 degrees.

[0022] In an embodiment, directing the glass ribbon with the first directing device can include directing a gas from the first directing device toward the glass ribbon.

[0023] In an embodiment, contacting the glass ribbon across a width of the glass ribbon can include contacting a first major surface of the glass ribbon.

[0024] In an embodiment, adjusting the position of the second guider can include changing a distance separating the first guider from the second guider. The second guider can apply tension to the glass ribbon, thereby reducing warpage of the glass ribbon.

[0025] Additional features and advantages of the embodiments disclosed herein are set forth in the detailed description that follows, and in part will be apparent to those skilled in the art from that description or may be learned by practicing the embodiments described herein, including the following detailed description, claims, and accompanying drawings. It is to be understood that both the foregoing general description and the following detailed description present embodiments that are intended to provide an overview or framework for understanding the nature and features of the embodiments disclosed herein. The accompanying drawings are included to provide a further understanding, and are incorporated in and constitute a part of this specification. The drawings illustrate various aspects of the present disclosure and, together with the description, serve to explain its principles and operation.

[0026] These and other features, aspects, and advantages will be better understood when the following detailed description is read in conjunction with the accompanying drawings. [Brief explanation of the drawings]

[0027] [Figure 1] 1A and 1B illustrate schematic diagrams of exemplary embodiments of a glass manufacturing apparatus according to aspects of the present disclosure. [Figure 2] 2 illustrates area of ​​interest 2 of FIG. 1 of a glass manufacturing apparatus according to an embodiment of the present disclosure. [Figure 3]1 illustrates a perspective view of a turning device of a glass manufacturing apparatus according to an aspect of the present disclosure. [Figure 4] 4 shows a cross-sectional view of a turning device taken along line 4-4 of FIG. 3, according to an embodiment of the present disclosure. [Figure 5] 5 shows a cross-sectional view of a turning device taken along line 5-5 of FIG. 3, according to an embodiment of the present disclosure. [Figure 6] 6 shows a side view of a turning device taken along line 6-6 of FIG. 5, according to an embodiment of the present disclosure. [Figure 7] 7 shows an end view of a guide device for a turning device taken along line 7-7 of FIG. 2, according to an embodiment of the present disclosure. DETAILED DESCRIPTION OF THE INVENTION

[0028] DETAILED DESCRIPTION OF THE INVENTION Aspects will now be described more fully hereinafter with reference to the accompanying drawings, in which illustrative aspects are shown. Wherever possible, the same reference numbers are used throughout the drawings to refer to the same or like parts. This disclosure may, however, be embodied in many different forms and should not be construed as limited to the aspects set forth herein.

[0029] As used herein, the term "about" means that amounts, sizes, formulas, parameters, and other quantities and properties are not, and need not be, exact and may be approximate and / or larger or smaller, as desired, to reflect tolerances, conversion factors, rounding, measurement errors, etc., and other factors known to those of ordinary skill in the art.

[0030] Ranges may be expressed herein as from "about" one value and / or to "about" another value. When such a range is expressed, the aspect includes from the one value to the other value. Similarly, when values ​​are expressed as approximations, by use of the antecedent "about," it will be understood that the values ​​form another aspect. 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.

[0031] Directional terms used herein, such as up, down, right, left, front, back, top, bottom, upper, lower, etc., are merely for reference as drawn in the figures and are not intended to imply absolute orientation.

[0032] Unless otherwise expressly stated, it is in no way intended that any method described herein be construed as requiring its steps to be performed in a particular order, or that any apparatus require a particular orientation. Thus, where a method claim does not actually recite an order to be followed, or where any apparatus claim does not actually recite an order or orientation for individual components, or where the claim or description otherwise specifically states that the steps are to be limited to a particular order or that no particular order or orientation for the apparatus components is recited, no order or orientation is intended to be inferred in any respect. This applies to any possible implicit basis for interpretation, including logical considerations relative to the arrangement of steps, operational flow, component order, or component orientation, apparent meaning derived from grammatical construction or punctuation, and the number or type of aspects described in the specification.

[0033] As used herein, the singular forms "a," "an," and "the" include plural references unless the context clearly dictates otherwise. Thus, for example, reference to "a component" includes aspects having two or more such components unless the context clearly dictates otherwise.

[0034] The words "exemplary" and "example," or various variations thereof, are used herein to mean serving as an example, instance, or illustration. Any aspect or design described herein as "exemplary" or "example" is not to be construed as preferred or advantageous over other aspects or designs. Furthermore, examples are provided for purposes of clarity and understanding only and are not meant to limit or restrict in any way the subject matter of this disclosure, or relevant portions thereof. It will be appreciated that numerous additional or alternative examples of varying scope could be presented but have been omitted for purposes of brevity.

[0035] As used herein, the terms "comprising" and "including," and variations thereof, unless otherwise indicated, are intended to be synonymous and open-ended. A list of elements following the transitional phrase "comprising" or "including" is a non-exclusive list, such that there may be other elements than those specifically listed.

[0036] As used herein, the terms "substantial," "substantially," and variations thereof are intended to indicate that a described feature is equal to or approximately equal to a value or description. For example, a "substantially planar" surface is intended to indicate a surface that is planar or approximately planar. Furthermore, "substantially" is intended to indicate that two values ​​are equal or approximately equal. The term "substantially" can indicate values ​​within about 10% of each other, for example, within about 5% of each other, or within about 2% of each other.

[0037] Modifications may be made to this disclosure without departing from the scope or spirit of the claimed subject matter. Unless otherwise specified, "first," "second," etc. are not intended to imply temporal aspects, spatial aspects, ordering, etc. Rather, such terms are used merely as identifiers, names, etc. for features, elements, items, etc. For example, a first end and a second end generally correspond to end A and end B or two different ends.

[0038] The present disclosure relates to glass manufacturing apparatus and methods for producing glass ribbons. For purposes of this application, a "ribbon" may be considered one or more of a glass ribbon in a viscous state, a glass ribbon in an elastic state (e.g., at room temperature), and / or a glass ribbon in a viscoelastic state between a viscous state and an elastic state. A glass ribbon may include a glass ribbon of indefinite length, or one or more separated glass articles (e.g., separated ribbons, separated sheets, etc.) having multiple, e.g., four, separate edges. Methods and apparatus for producing glass ribbons are now described as exemplary embodiments. As shown generally in FIG. 1 , in an embodiment, an exemplary glass manufacturing apparatus 100 may include a feed apparatus 101 having a feed conduit through which a flow of molten glass 103 may exit the feed apparatus 101. For example, the feed apparatus 101 may include an elongated passageway having an opening at an end of the feed apparatus 101. In an embodiment, the feeder 101 can be oriented along the direction of gravity such that the flow of molten glass 103 can flow downward from the feeder 101 along the direction of gravity.

[0039] In an embodiment, the feeding apparatus 101 can be positioned at an upstream end of a travel path 119 extending in a travel direction 117. The feeding apparatus 101 can direct (e.g., convey, feed, etc.) a flow of molten glass 103 along the travel path 119 in the travel direction 117. In an embodiment, the glass manufacturing apparatus 100 can include one or more pairs of opposing forming rolls, such as a first forming roll 107 and a second forming roll 109. The second forming roll 109 can be spaced from the first forming roll 107 to define a gap 105. The gap 105 provides a glass ribbon 123 having a width and thickness 121. In an embodiment, the first forming roll 107 and the second forming roll 109 can rotate in opposite directions relative to one another. For example, in the orientation shown in FIG. 1 , the first forming roll 107 can rotate in a clockwise direction, while the second forming roll 109 can rotate in a counterclockwise direction. In an embodiment, first forming roll 107 and second forming roll 109 receive the flow of molten glass 103 along a travel path 119 within gap 105. In an embodiment, first forming roll 107 can extend along an axis 111 that is parallel to travel path 119 and perpendicular to travel direction 117. Second forming roll 109 can extend along an axis 113 that is parallel to travel path 119 and perpendicular to travel direction 117. The flow of molten glass 103 can accumulate between first forming roll 107 and second forming roll 109, whereby first forming roll 107 and second forming roll 109 can flatten, thin, and smooth the flow of molten glass 103 into a glass ribbon 123. Glass ribbon 123 includes a first major surface 127 and a second major surface 129.

[0040] The turning device 130 can be located downstream from the forming rolls 107, 109 relative to the traveling direction 117 to change the direction of travel of the traveling path 119. For example, the turning device 130 can be oriented to turn the glass ribbon 123 approximately 90 degrees so that the glass ribbon 123 can move from a substantially vertical orientation (e.g., first orientation 131) upstream from the turning device 130 to a horizontal orientation (e.g., second orientation 132) downstream from the turning device 130. The turning device 130 can extend along an axis parallel to the traveling path 119, and the turning device 130 is configured to direct the glass ribbon 123 along the traveling path 119 in a second traveling direction 135 that is not parallel to the traveling direction 117. In an embodiment, a support surface 139 can be positioned downstream from the turning device 130 (e.g., relative to the traveling direction of the glass ribbon 123), and the support surface 139 is configured to support the glass ribbon 123. In embodiments, the support surface 139 can include a conveyor (e.g., a belt conveyor), one or more air bearings, one or more rollers, etc. Accordingly, a method of producing glass can include moving the glass ribbon 123 along the travel path 119 in the travel direction 117, 135.

[0041] In embodiments, the glass ribbon 123 may include one or more of, for example, soda-lime glass, borosilicate glass, aluminoborosilicate glass, alkali-containing glass, alkali-free glass, aluminosilicate, borosilicate, aluminoborosilicate, silicate, glass-ceramic, or other materials including glass. In embodiments, the glass ribbon 123 may be used in a variety of display and non-display applications, including, but not limited to, liquid crystal displays (LCDs), electrophoretic displays (EPDs), organic light-emitting diode displays (OLEDs), plasma display panels (PDPs), micro LED displays, mini LED displays, organic light-emitting diode lighting, light-emitting diode lighting, augmented reality (AR), virtual reality (VR), touch sensors, photovoltaic cells, flip phones, or other applications. In embodiments, the glass ribbon 123 may be used as a back glass cover for smartphones or other glass bodies for electronic components with non-uniform thickness.

[0042] FIG. 2 illustrates area of ​​interest 2 of FIG. 1 of a portion of a turning device 130 for directing the glass ribbon 123 from a substantially vertical orientation (e.g., first orientation 131) to a horizontal orientation (e.g., second orientation 132). In an embodiment, the turning device 130 can include one or more guiding devices for guiding the glass ribbon 123, e.g., a first guiding device 201 and a second guiding device 203. The first guiding device 201 can be positioned upstream from the second guiding device 203 with respect to the traveling direction 117, 135 of the glass ribbon 123. In an embodiment, the first guiding device 201 can be positioned adjacent to a first side 207 of the traveling path such that the first guiding device 201 can guide the glass ribbon 123 from the first orientation 131 to a second orientation 132 that is different from the first orientation 131. In an embodiment, the first side 207 can face the first major surface 127. In an embodiment, the first guide device 201 can include a gas bearing spaced apart from the travel path and configured to direct gas toward the travel path to guide the glass ribbon 123. For example, the first guide device 201 can be substantially hollow and can include a plurality of openings extending through a surface 209 of the first guide device 201. The surface 209 can be adjacent to and proximate to the first major surface 127 such that the gas can pass through the plurality of openings toward the glass ribbon 123 and impinge on the glass ribbon 123. In this manner, the gas can facilitate directing the glass ribbon 123 while limiting contact of the glass ribbon 123 with the surface 209 of the first guide device 201. In an embodiment, the surface 209 can include a rounded semicircular shape that can match the shape of the travel path along which the glass ribbon 123 travels as it passes through the first guide device 201.

[0043] The turning device 130 may include a second guide device 203 positioned adjacent a first side 207 of the travel path and downstream from the first guide device 201 relative to the direction of travel of the glass ribbon 123. The second guide device 203 may extend along an axis 215 and may contact the glass ribbon 123 across a width of the glass ribbon 123 (e.g., width 701 shown in FIG. 7 ) perpendicular to the direction of travel 135. In an embodiment, the second guide device 203 may include a roller extending along the axis 215, the roller configured to contact a first major surface 127 of the glass ribbon 123. Thus, the method may include guiding the glass ribbon 123 from a first orientation 131 to a second orientation 132 different from the first orientation 131 by engaging the glass ribbon 123 with the first guide device 201 positioned adjacent the first side 207 of the travel path 119. In embodiments, the second directing device 203 is not limited to a roller, but may comprise an air bearing that can emit gas toward the glass ribbon 123 to apply a force to the glass ribbon 123.

[0044] 3 shows a perspective view of the turning device 130. In an embodiment, the turning device 130 can include a support bracket 301 for attaching the first directing device 201 to the second directing device 203. For example, the support bracket 301 can be attached to the first directing device 201 and the second directing device 203 (e.g., to ends of the first directing device 201 and the second directing device 203), and the support bracket 301 and the second directing device 203 are configured to move relative to the first directing device 201. In an embodiment, directing the glass ribbon 123 with the first directing device 201 can include directing a gas from the first directing device 201 toward the glass ribbon 123.

[0045] The support bracket 301 can include a mounting arm 303 extending between the first guide device 201 and the second guide device 203. For example, in embodiments, the mounting arm 303 can extend in a non-linear manner, including, for example, an L-shape. The mounting arm 303 can include a first arm portion 305 and a second arm portion 307, where the first arm portion 305 is angled relative to the second arm portion 307. In embodiments, the first arm portion 305 can form an angle with the second arm portion 307 that is in the range of about 70 degrees to about 110 degrees, or in the range of 80 degrees to about 100 degrees, or about 90 degrees. In an embodiment, the first arm portion 305 can extend substantially horizontally along a first linear axis (e.g., parallel to the glass ribbon 123 in the second orientation 132), and the second arm portion 307 can extend substantially vertically along a second linear axis (e.g., parallel to the glass ribbon 123 in the first orientation 131). The mounting arm 303 can be attached to the first guide device 201 at a first location of the mounting arm 303 (e.g., the end of the first arm portion 305 attached to the first guide device 201) and attached to the second guide device 203 at a second location of the mounting arm 303 (e.g., the end of the second arm portion 307 attached to the second guide device 203).

[0046] The mounting arm 303, e.g., second arm portion 307, can include an elongated opening 311 extending along an opening axis 313 that is parallel to a first guide path 317 of the multiple guide paths. In this manner, the mounting arm 303 can receive a fastener 319 through the elongated opening 311 such that the mounting arm 303 can be translatable (e.g., movable, slidable, etc.) along the opening axis 313. The elongated opening 311 can extend entirely through the second arm portion 307, e.g., from one side to the other of the second arm portion 307, with the elongated opening 311 being bounded by a wall of the second arm portion 307. In an aspect, the fastener 319 can extend through the elongated opening 311 such that the mounting arm 303 can move relative to the fastener 319.

[0047] The support bracket 301 can include a mounting block 323 in contact with and attached to the second arm portion 307. For example, the mounting block 323 can extend along the opening axis 313 and be positioned adjacent to the elongated opening 311. The support bracket 301 can include an adjustment member 325 in contact with and attached to the mounting block 323, with the mounting block 323 positioned between the adjustment member 325 and the second arm portion 307. One or more fasteners can extend through the elongated opening 311 to attach the second arm portion 307 to the mounting block 323 and / or the adjustment member 325. In an aspect, the support bracket 301 can include a mounting plate 327 in contact with and attached to the adjustment member 325 such that the adjustment member 325 can be positioned between the mounting block 323 and the mounting plate 327.

[0048] The support bracket 301 can include a retaining block 331 attached to the first arm portion 305. The retaining block 331 can be attached to the end of the first arm portion 305 in several ways, such as via mechanical fasteners, adhesives, welding, etc. FIG. 4 illustrates a cross-sectional view of a portion of the support bracket 301 taken along line 4-4 in FIG. 3. As shown in FIG. 4, the retaining block 331 can include a block opening 401 capable of receiving an end 403 of the second guide device 203 therein. In embodiments, the block opening 401 can be bounded on a first side by a wall 407 of the retaining block 331 and unbounded on an opposite second side capable of receiving the end 403. In embodiments, the block opening 401 can be on an opposite side of the retaining block 331 from the second direction of travel 135 of the glass ribbon 123. For example, as the glass ribbon 123 moves in contact with the second guide device 203, the glass ribbon 123 may move in the second travel direction 135. In an embodiment, the second travel direction 135 may first pass through the block opening 401 and subsequently through the wall 407, such that the wall 407 is downstream from the block opening 401 relative to the second travel direction 135. In this manner, when the glass ribbon 123 contacts the second guide device 203 and applies a force to the second guide device 203 in the second travel direction 135, the end 403 may contact and be urged toward the wall 407 to remain within the block opening 401, thus limiting the likelihood that the end 403 will be removed from the block opening 401. Thus, an operator can remove the end 403 from the block opening 401 when desired (e.g., by moving the end 403 in a direction opposite to the second travel direction 135). In embodiments, one or more tension nuts, washers, etc. may be attached to the end of the second guide device 203 (e.g., on the outside of the retaining block 331) to help maintain the second guide device 203 within the retaining block 331.

[0049] In an embodiment, the guide arm 415 can pass through the opening 417 in the adjustment member 325, and the guide arm 415 is attached to the first guide device 201. For example, an end of the guide arm 415 can be attached to an end of the first guide device 201 such that the guide arm 415 can be fixed relative to the first guide device 201. The adjustment member 325 can include a first mounting wall 421 and a second mounting wall 423, where the first mounting wall 421 is spaced apart from the second mounting wall 423 to form the opening 417 therebetween. In an embodiment, the first mounting wall 421 and the second mounting wall 423 can be angled to match the shape and inclination of the guide arm 415. In an embodiment, the opening 417 can be larger than the size of the guide arm 415 to allow the adjustment member 325 to move relative to the guide arm 415. For example, the guide arm 415 can extend along an axis 427. Thus, adjustment member 325 can move relative to guide arm 415 along axis 427. In an embodiment, some or all of support bracket 301 can include stainless steel. In an embodiment, when second guide device 203 includes a roller, second guide device 203 can include one or more of ceramic, silicon carbide, graphite, or fused silica.

[0050] FIG. 5 shows a cross-sectional view of support bracket 301 taken along line 5-5 in FIG. 3. In an embodiment, mounting block 323 can extend between first surface 501 and second surface 503. First surface 501 contacts and is attached to second arm portion 307, and second surface 503 can be parallel to and spaced apart from first surface 501. Mounting block 323 can include one or more openings extending partially or completely through mounting block 323, through first surface 501, and to second surface 503. For example, mounting block 323 can include a first opening 507 extending through mounting block 323 from first surface 501 to second surface 503. First opening 507 can be sized to receive first fastener 509, with the head of first fastener 509 positioned within a recess in first surface 501. In an embodiment, first fastener 509 can exit first opening 507 at second surface 503 such that first fastener 509 can be attached (e.g., by threading) to adjustment member 325.

[0051] Mounting block 323 can include a second opening 513 extending through mounting block 323 from first surface 501 to second surface 503. Second opening 513 can be sized to receive fastener 319 (e.g., also shown in FIG. 3 ). In embodiments, fastener 319 can extend through elongated opening 311 and through second opening 513 such that fastener 319 can exit second opening 513 at second surface 503. In this manner, fastener 319 can be attached (e.g., by threaded engagement) to adjustment member 325. In embodiments, head 515 of fastener 319 can be sized larger than elongated opening 311 such that head 515 can reside on the opposite side of second arm portion 307 from mounting block 323.

[0052] The mounting block 323 may include a third opening 519 extending partially through the mounting block 323 from the first surface 501 toward the second surface 503. The third opening 519 may be sized to receive the third fastener 521. In an aspect, the third fastener 521 may extend partially through the mounting block 323 such that the third fastener 521 does not have to contact the adjustment member 325. The third fastener 521 and the third opening 519 may threadably mate such that the third fastener 521 can be attached to the mounting block 323 by engaging the third opening 519. In an embodiment, the head of third fastener 521 may be larger than elongated opening 311 so that third fastener 521 can remain within elongated opening 311 and so that the head of third fastener 521 can remain on the opposite side of second arm portion 307 from mounting block 323.

[0053] Mounting block 323 may include a fourth opening 525 extending through mounting block 323 from first surface 501 to second surface 503. Fourth opening 525 may be sized to receive a fourth fastener 527, with a head of fourth fastener 527 positioned within a recess in first surface 501. In an aspect, fourth fastener 527 may exit fourth opening 525 at second surface 503 such that fourth fastener 527 may be attached (e.g., by threading) to adjustment member 325. In an aspect, first opening 507 and fourth opening 525 may be substantially the same size and shape and may be spaced apart from second opening 513 and third opening 519 positioned between first opening 507 and fourth opening 525. In an embodiment, first fastener 509 and fourth fastener 527 may be substantially the same size and shape, and first fastener 509 and fourth fastener 527 are attached to adjustment member 325 .

[0054] The mounting block 323 can include a fifth opening 531 extending partially through the mounting block 323 from the first surface 501 toward the second surface 503. The fifth opening 531 can be sized to receive a fifth fastener 533. In an aspect, the fifth fastener 533 can extend partially through the mounting block 323 such that the fifth fastener 533 does not have to contact the adjustment member 325. The fifth fastener 533 and the fifth opening 531 can threadably mate such that the fifth fastener 533 can be attached to the mounting block 323 by engaging with the fifth opening 531. In an embodiment, the head of fifth fastener 533 may be sized larger than elongated opening 311 such that fifth fastener 533 can remain within elongated opening 311 and the head of fifth fastener 533 can remain on the opposite side of second arm portion 307 from mounting block 323. Fourth opening 525 may be positioned between third opening 519 and fifth opening 531.

[0055] The third fastener 521 and the fifth fastener 533 can collectively restrict the mounting block 323 from rotating relative to the mounting arm 303 while allowing the mounting arm 303 to move (e.g., slide, translate, etc.) relative to the mounting arm 303 along the first guide path 317 (e.g., parallel to the opening axis 313). For example, the third fastener 521 and the fifth fastener 533 can be tightened (e.g., turned) and further inserted into the third opening 519 and the fifth opening 531 of the mounting block 323, which can bias the second arm portion 307 into contact with the mounting block 323. When the third fastener 521 and the fifth fastener 533 are tightened, the second arm portion 307 can be fixed and not movable relative to the mounting block 323 along the first guide path 317. In aspects, third fastener 521 and fifth fastener 533 may be loosened to allow mounting arm 303 to move relative to mounting arm 303 along first guide path 317. For example, third fastener 521 and fifth fastener 533 may be loosened (e.g., unscrewed) and retracted from third opening 519 and fifth opening 531, which may reduce the force applied by third fastener 521 and fifth fastener 533 to second arm portion 307 toward mounting block 323. With third fastener 521 and fifth fastener 533 relaxed, second arm portion 307 can move relative to mounting arm 303 along first guide path 317, e.g., by second arm portion 307 moving upward or downward as third fastener 521 and fifth fastener 533 remain within elongated opening 311. When second arm portion 307 reaches a desired position along first guide path 317, third fastener 521 and fifth fastener 533 can be tightened, thus urging second arm portion 307 toward mounting block 323 and securing mounting arm 303 in a static position relative to mounting block 323.

[0056] In embodiments, adjustment member 325 can extend between a first surface 541 and a second surface 543. First surface 541 can contact and be attached to second surface 503 of mounting block 323. Second surface 543 can be parallel to and spaced apart from first surface 541. In embodiments, second surface 543 can be non-planar and include first surface portion 545, second surface portion 547, and third surface portion 549, for example. First surface portion 545 and third surface portion 549 can be parallel to and coplanar with first surface portion 545. Second surface portion 547 can be parallel to first surface portion 545 and third surface portion 549 and can be non-planar with first surface portion 545 and third surface portion 549. The second surface portion 547 is positioned between and recessed from the first surface portion 545 and the third surface portion 549 such that the distance separating the first surface portion 541 and the second surface portion 547 is less than the distance separating the first surface portion 541 and the first surface portion 545 or the third surface portion 549. In an aspect, the adjustment member 325 can include a channel 551 capable of receiving the guide arm 415 therein. For example, the channel 551 can be bounded by the second surface portion 547, by the first mounting wall 421 (e.g., extending between the first surface portion 545 and the second surface portion 547), and by the second mounting wall 423 (e.g., extending between the second surface portion 547 and the third surface portion 549). The first mounting wall 421 and the second mounting wall 423, also shown in FIG. 4, may be angled to match the shape and angle of the guide arm 415.

[0057] Adjustment member 325 can include one or more openings, e.g., first opening 555, second opening 557, and third opening 559. In an embodiment, first opening 555 can extend through adjustment member 325 from first surface 541 to second surface 543, e.g., first surface portion 545. For example, adjustment member 325 can be aligned with mounting block 323 such that first opening 555 can extend coaxially with first opening 507. In this manner, first fastener 509 can extend through first opening 507 and into first opening 555. In an embodiment, first fastener 509 can be threadedly engaged with an inner surface of first opening 555 such that first fastener 509 can be attached to adjustment member 325 (e.g., by threading into first opening 555). First fastener 509 may extend partially, but not completely, through first opening 555 such that first fastener 509 may penetrate first surface 541 but may not exit first opening 555 at first surface portion 545 of second surface 543. In embodiments, first openings 507, 555 may extend along an axis that does not intersect channel 551.

[0058] In embodiments, second opening 557 can extend through adjustment member 325 from first surface 541 to second surface 543, e.g., second surface portion 547. For example, adjustment member 325 can be aligned with mounting block 323 such that second opening 557 can extend coaxially with second opening 513. In this manner, fastener 319 can extend through second opening 513 and into second opening 557. In embodiments, fastener 319 can be threadedly engaged with an inner surface of second opening 557 such that fastener 319 can be attached to adjustment member 325 (e.g., by threading into second opening 557). In embodiments, fastener 319 can extend completely through second opening 557 such that fastener 319 can penetrate first surface 541 and exit second opening 557 at second surface portion 547. In an embodiment, the fastener 319 can contact the guide arm 415 and apply a force to the guide arm (e.g., in a direction away from the mounting block 323). The second opening 513, 557 can extend along an axis that intersects the channel 551.

[0059] In embodiments, third opening 559 can extend through adjustment member 325 from first surface 541 to second surface 543, e.g., third surface portion 549. For example, adjustment member 325 can be aligned with mounting block 323 such that third opening 559 can extend coaxially with fourth opening 525. In this manner, fourth fastener 527 can extend through fourth opening 525 and into third opening 559. In embodiments, fourth fastener 527 can be threadedly engaged with an inner surface of third opening 559 such that fourth fastener 527 can be attached to adjustment member 325 (e.g., by threading into third opening 559). Fourth fastener 527 may extend partially, but not completely, through third opening 559 such that fourth fastener 527 may penetrate first surface 541 but may not exit third opening 559 at third surface portion 549 of second surface 543. In an aspect, fourth opening 525 and third opening 559 may extend along an axis that does not intersect channel 551.

[0060] In an embodiment, the mounting plate 327 can extend between a first surface 565 and a second surface 567. The first surface 565 can contact and be attached to the second surface 543 (e.g., first surface portion 545 and third surface portion 549) of the adjustment member 325. The first surface 565 can be parallel to and spaced apart from the second surface 567, and the first surface 565 and second surface 567 are substantially planar. In an embodiment, the first surface 565 can be parallel to and spaced apart from the second surface portion 547 of the second surface 543 of the adjustment member 325 such that the second surface portion 547, the first surface 565, and the walls 421, 423 can form a channel 551 in which the guide arm 415 is received.

[0061] The mounting plate 327 can include one or more openings, e.g., a first opening 571 and a second opening 573. In an embodiment, the first opening 571 can extend through the mounting plate 327 from the first surface 565 to the second surface 567. The mounting plate 327 can be aligned with the adjustment member 325 such that the first opening 571 can extend coaxially with the first opening 555 of the adjustment member 325 and the first opening 507 of the mounting block 323. In this manner, the first fastener 575 can extend through the first opening 571 and into the first opening 555 of the adjustment member 325. The first fastener 575 can be threaded with an inner surface of the first opening 555 (e.g., by passing through the first opening 571 and threading into the first opening 555) to attach the mounting plate 327 to the adjustment member 325. The first fastener 575 may extend completely through the first opening 571 in the mounting plate 327 and partially through the first opening 555 in the adjustment member 325, for example, from the first surface portion 545 toward the first surface 541.

[0062] In an aspect, the second opening 573 can extend through the mounting plate 327 from the first surface 565 to the second surface 567. The mounting plate 327 can be aligned with the adjustment member 325 such that the second opening 573 can extend coaxially with the third opening 559 of the adjustment member 325 and the fourth opening 525 of the mounting block 323. In this manner, the second fastener 577 can extend through the second opening 573 and into the third opening 559 of the adjustment member 325. The second fastener 577 can be threaded with an inner surface of the third opening 559 (e.g., by passing through the second opening 573 and threading into the third opening 559) such that the second fastener 577 can attach the mounting plate 327 to the adjustment member 325. The second fastener 577 may extend completely through the second opening 573 in the mounting plate 327 and partially through the third opening 559 in the adjustment member 325, for example, from the third surface portion 549 toward the first surface 541.

[0063] The width of channel 551 (e.g., the distance between second surface portion 547 of adjustment member 325 and first surface 565 of mounting plate 327) can be less than or equal to the width of guide arm 415. Mounting block 323, adjustment member 325, and mounting plate 327 can be fixed relative to one another such that adjustment member 325 and mounting plate 327 can move relative to guide arm 415. In aspects, adjustment member 325 and mounting plate 327 can be selectively fixed relative to guide arm 415 such that, when fixed, adjustment member 325 and mounting plate 327 do not have to move relative to guide arm 415. For example, to secure the adjustment member 325 and mounting plate 327 relative to the guide arm 415 (e.g., to prevent relative movement between the guide arm 415, adjustment member 325, and mounting plate 327), fastener 319 can be turned and threaded into second opening 557 so that end 581 of fastener 319 can contact and abut guide arm 415. End 581 can apply a force to the guide arm 415, biasing the guide arm 415 toward the mounting plate 327 and thus limiting movement of the adjustment member 325 and mounting plate 327 relative to the guide arm 415. To allow movement and / or adjustment of the adjustment member 325 and mounting plate 327 relative to the guide arm 415, fastener 319 can be unscrewed to move end 581 away from the guide arm 415 so that the guide arm 415 does not have to be biased toward the mounting plate 327. 5 are merely exemplary, and the lengths of fasteners 319, 509, 521, 527, 533, 575, 577 represent exemplary embodiments. In embodiments, fasteners 319, 509, 521, 527, 533, 575, 577 can be longer or shorter than shown and still function substantially identically as described herein.

[0064] FIG. 6 shows an end of the support bracket 301 as viewed along line 6-6 in FIG. 5. In an embodiment, the second guide device 203 can move relative to the first guide device 201 along multiple guide paths that are perpendicular to the axis 215. For example, the support bracket 301 can move the second guide device 203 relative to the first guide device 201 along a first guide path 317 that is parallel to the first orientation 131 of the glass ribbon 123 and a second guide path 603 that forms an angle 605 with respect to the first guide path 317 within a range of about 45 degrees to about 135 degrees. In an embodiment, the first guide path 317 is parallel to the opening axis 313 of the elongated opening 311 and perpendicular to the glass ribbon 123 when the glass ribbon 123 is in the second orientation 132. The mounting arm 303 can move along a first guide path 317 relative to the mounting block 323, the adjustment member 325, and the mounting plate 327. Thus, due to the first guide device 201 being attached to the mounting arm 303, the first guide device 201 and the mounting arm 303 can move together along the first guide path 317. By moving along the first guide path 317, the second guide device 203 can move toward or away from the glass ribbon 123 (e.g., perpendicular to the direction of gravity).

[0065] In an embodiment, the second guide path 603 can be parallel to the axis 427 of the guide arm 415. Thus, the method can include adjusting a position of the second guide device 203 relative to the glass ribbon 123 by moving the second guide device 203 along one or more of: a first guide path 317 that is parallel to the first orientation 131 of the glass ribbon 123; or a second guide path 603 that forms an angle 605 with the first guide path 317 that is within a range of about 45 degrees to about 135 degrees. In an embodiment, adjusting the position of the second guide device 203 can include changing a distance 609 separating the first guide device 201 from the second guide device 203. For example, by moving the second guide device 203 along the second guide path 603, the second guide device 203 can be moved toward the first guide device 201 (e.g., shown in FIG. 6 by the first movement direction 611) or away from the first guide device 201 (e.g., shown by the second movement direction 613).

[0066] FIG. 7 shows a side view of the second guider 203 and the glass ribbon 123 taken along line 7-7 in FIG. 2. In an embodiment, the second guider 203 can extend along an axis 215 and can contact the glass ribbon 123 across a width 701 of the glass ribbon 123 perpendicular to the traveling direction (e.g., the second traveling direction 135 shown in FIG. 1). In an embodiment, the axis 215 of the second guider 203 can be oriented substantially parallel to the first major surface 127 and the second major surface 129 of the glass ribbon 123, with the support surface 139 positioned on the opposite side of the glass ribbon 123 from the second guider 203. For example, the second guider 203 can contact the first major surface 127, while the support surface 139 can be located on the side facing the second major surface 129. The support surface 139 may be positioned below the glass ribbon 123 relative to the direction of gravity to support the glass ribbon 123, and the support surface 139 may comprise a conveyor, one or more air bearings, one or more rollers, etc. In embodiments, the glass ribbon 123 may have a width 701 in the range of about 200 millimeters ("mm") to about 350 mm and a thickness in the range of about 0.5 mm to about 8 mm. The glass ribbon 123 may have a uniform thickness or a non-uniform thickness. In embodiments, when moving from the first orientation 131 to the second orientation 132 and engaging the guide devices 201, 203, the glass ribbon 123 may have a thickness of about 1×10 5 Poise ~ approx. 1 x 10 9 It can have a viscosity in the poise range.

[0067] In embodiments, when the glass ribbon 123 has a thickness less than a certain thickness, e.g., about 0.8 mm, the glass ribbon 123 may experience warping across the width 701 of the glass ribbon 123. To reduce the warping and flatten the glass ribbon 123, the second guiding device 203 contacts the first major surface 127 and applies a downward force to the glass ribbon 123 in a direction toward the support surface 139. While the second guiding device 203 contacts the first major surface 127, the glass ribbon 123 moves along a traveling direction (e.g., second traveling direction 135 shown in FIG. 1 ). The second guiding device 203 can be moved along the first guiding path 317 and / or the second guiding path 603 (e.g., shown in FIG. 6 ) to accommodate characteristics of the glass ribbon 123, such as the position of the glass ribbon 123 relative to the second guiding device 203 and / or the support surface 139, the thickness of the glass ribbon 123, etc. In this manner, the second guide device 203 can adjust the length of the travel path of the glass ribbon 123 from the first guide device 201 to a location downstream of the second guide device 203. For example, when the second guide device 203 contacts the glass ribbon 123 and applies a downward force or tension, the second guide device 203 can increase the length of the travel path of the glass ribbon 123, which has the effect of reducing bowing in the glass ribbon 123.

[0068] Moving the second guide device 203 may allow for adjusting the magnitude of the force applied to the glass ribbon 123 by the second guide device 203, thus minimizing warpage while reducing the likelihood of damage to the glass ribbon 123. Accordingly, the portion of the glass ribbon 123 downstream from the second guide device 203 relative to the traveling direction may be flattened and may have reduced or zero warpage across the width 701. Thus, in aspects, the method may include contacting the glass ribbon 123 with the second guide device 203 positioned downstream from the first guide device 201 across the width 701 of the glass ribbon 123 perpendicular to the traveling direction (e.g., the second traveling direction 135). Contacting the glass ribbon 123 across the width 701 of the glass ribbon 123 may include contacting a first major surface 127 of the glass ribbon 123. Although the support bracket 301 is shown attached to one end of the first guide device 201 and one end of the second guide device 203, substantially identical support brackets can be positioned on opposite ends of the first guide device 201 and the second guide device 203, and the support brackets function in substantially the same manner. In this manner, the guide device can simultaneously move both ends of the second guide device 203 along multiple guide paths 317, 603. In embodiments, downstream of the second guide device 203, the glass ribbon 123 can have a camber that is less than about 100 micrometers (“microns”), where the camber is the maximum deviation from a flat surface or nominal plane.

[0069] While various aspects have been described in detail with reference to certain illustrative and specific examples thereof, it should be understood that the disclosure should not be considered as so limited, as numerous modifications and combinations of the disclosed features are possible without departing from the scope of the following claims.

Claims

1. 1. A glass manufacturing apparatus comprising: a feeding device positioned at an upstream end of a travel path extending in a travel direction, the feeding device configured to direct the glass ribbon along the travel path in the travel direction of the feeding device; a first directing device positioned adjacent a first side of the travel path and configured to direct the glass ribbon from a first orientation to a second orientation different from the first orientation; a second guide device positioned adjacent to the first side of the travel path downstream from the first guide device, the second guide device extending along an axis and configured to contact the glass ribbon across a width of the glass ribbon perpendicular to the direction of travel, the second guide device configured to move relative to the first guide device along a plurality of guide paths perpendicular to the axis.

2. 10. The glass manufacturing apparatus of claim 1, further comprising a support bracket attached to the first guide device and the second guide device, the support bracket and the second guide device configured to move relative to the first guide device.

3. 3. The glass manufacturing apparatus of claim 2, wherein the support bracket comprises a mounting arm attached to the first guide device at a first location on the mounting arm and attached to the second guide device at a second location on the mounting arm, the mounting arm comprising an elongated opening extending along an opening axis parallel to a first guide path of the plurality of guide paths and configured to receive a fastener therethrough such that the mounting arm is translatable along the opening axis.

4. 4. The glass manufacturing apparatus of claim 3, wherein the support bracket comprises an adjustment member having a channel within which an elongated guide arm is received, the elongated guide arm being attached to an end of the first guide device, and the adjustment member is configured to move along the elongated guide arm along a second guide path of the plurality of guide paths.

5. 5. The glass manufacturing apparatus of claim 4, wherein the first and second guide paths form an angle within a range of about 45 degrees to about 135 degrees.

6. 6. The glass manufacturing apparatus of claim 2, wherein the support bracket comprises a retaining block having a block opening within which an end of the second guide device is received, the block opening being bounded on a first side and unbounded on an opposite second side by a wall of the retaining block.

7. 7. The glass manufacturing apparatus of claim 1, wherein the first directing device is spaced from the travel path and comprises a gas bearing configured to direct gas toward the travel path to direct the glass ribbon.

8. 7. The glass manufacturing apparatus of claim 1, wherein the second directing device comprises a roller extending along the axis and configured to contact a first major surface of the glass ribbon.

9. The glass manufacturing apparatus of any one of claims 1 to 8, wherein the second directing device is configured to apply tension to the glass ribbon.

10. 1. A glass manufacturing apparatus comprising: a feeding device positioned at an upstream end of a travel path extending in a travel direction, the feeding device configured to direct the glass ribbon along the travel path in the travel direction of the feeding device; a first directing device positioned adjacent a first side of the travel path and configured to direct the glass ribbon from a first orientation to a second orientation different from the first orientation; a second guide device positioned adjacent to the first side of the path of travel downstream from the first guide device, the second guide device configured to contact the glass ribbon across a width of the glass ribbon perpendicular to the direction of travel; a support bracket attached to the first guide device and the second guide device, the support bracket configured to move the second guide device relative to the first guide device along a first guide path that is parallel to the first orientation of the glass ribbon and a second guide path that forms an angle with the first guide path that is within a range of about 45 degrees to about 135 degrees.

11. 11. The glass manufacturing apparatus of claim 10, wherein the support bracket comprises a mounting arm attached to the first guide device at a first location on the mounting arm and attached to the second guide device at a second location on the mounting arm, the mounting arm comprising an elongated opening extending along an opening axis parallel to the first guide path and configured to receive a fastener therethrough such that the mounting arm is translatable along the opening axis.

12. 12. The glass manufacturing apparatus of claim 11, wherein the support bracket comprises an adjustment member having a channel within which an elongated guide arm is received, the elongated guide arm being attached to an end of the first guide device, and the adjustment member configured to move along the elongated guide arm along the second guide path.

13. 13. The glass manufacturing apparatus of any one of claims 9 to 12, wherein the support bracket comprises a retaining block having a block opening within which an end of the second guide device is received, the block opening being bounded on a first side and unbounded on an opposite second side by a wall of the retaining block.

14. 14. The glass manufacturing apparatus of claim 9, wherein the first directing device comprises a gas bearing spaced apart from the travel path and configured to direct gas towards the travel path to direct the glass ribbon.

15. 15. The glass manufacturing apparatus of any one of claims 9 to 14, wherein the second directing device comprises a roller configured to contact a first major surface of the glass ribbon.

16. The glass manufacturing apparatus of any one of claims 10 to 15, wherein the second directing device is configured to apply tension to the glass ribbon.

17. 1. A method of making glass, comprising: Moving the glass ribbon in a traveling direction along a traveling path; guiding the glass ribbon from a first orientation to a second orientation different from the first orientation by engaging the glass ribbon with a first guiding device positioned adjacent a first side of the path of travel; contacting the glass ribbon with a second directing device positioned downstream from the first directing device across a width of the glass ribbon perpendicular to the traveling direction; adjusting a position of the second guide device relative to the glass ribbon by moving the second guide device along one or more of a first guide path that is parallel to the first orientation of the glass ribbon or a second guide path that forms an angle with the first guide path that is in a range of about 45 degrees to about 135 degrees.

18. 20. The method of claim 17, wherein the directing the glass ribbon with the first directing device comprises directing a gas from the first directing device toward the glass ribbon.

19. 19. The method of claim 17 or 18, wherein the contacting the glass ribbon across the width of the glass ribbon comprises contacting a first major surface of the glass ribbon.

20. 20. The method of any one of claims 17 to 19, wherein adjusting the position of the second guidance device comprises changing a distance separating the first guidance device from the second guidance device.

21. 21. The method of any one of claims 17 to 20, wherein the second directing device applies tension to the glass ribbon so as to reduce warpage of the glass ribbon.

Images