WO2021126542A1

WO2021126542A1 - Reciprocating score device

Info

Publication number: WO2021126542A1
Application number: PCT/US2020/063184
Authority: WO
Inventors: Nils Paul FORNELL
Original assignee: Corning Incorporated
Priority date: 2019-12-16
Filing date: 2020-12-04
Publication date: 2021-06-24
Also published as: TW202126596A

Abstract

A device and method for scoring a glass ribbon is provided. The device includes an arm adapted to extend across and in proximity to the surface of the glass ribbon; a slidable carriage coupled to the arm that includes a scoring member adapted to pivot between a scoring position where the scoring member contacts the glass ribbon to create a score line as the carriage moves along the arm, and a retracted position where the scoring member does not contact the glass ribbon. The device further includes an actuator for moving the carriage along the arm and for pivoting the scoring member between scoring and retracted positions; and a nosing adapted to contact a surface of the glass ribbon at an area aligned through the glass ribbon with the area contacted by the scoring member, and the aligned contact areas move in tandem as the carriage moves along the arm.

Description

RECIPROCATING SCORE DEVICE

RELATED APPLICATION

[0001] This application claims the benefit of priority under 35 U.S.C. § 119 of U.S. Provisional Application Serial No. 62/948502 filed on December 16, 2019, the content of which is relied upon and incorporated herein by reference in its entirety.

BACKGROUND

[0002] The present disclosure relates to a device and method for scoring glass ribbon, and more particularly to a device and method for scoring a ribbon of thin glass produced in a continuous process.

[0003] The demand for thinner glass sheets has increased in recent years, as thin glass sheets are routinely used in electronic devices. Scoring and separating thinner glass ribbon into glass sheets is a more complicated process than scoring and separating a thicker glass ribbon into sheets because thicker glass can bear a relatively large amount pressure applied to a surface by a scoring element, whereas thinner glass is easily deformed (e.g., bend) under the same pressure. Additionally, ribbons of thinner glass have a faster flow time relative to a thicker glass ribbon in otherwise similar manufacturing conditions. The technology for scoring and breaking thinner glass ribbon into sheets has been outpaced by the demand for and processing of thin glass sheets.

SUMMARY

[0004] A scoring device for manufacturing a glass sheet from a glass ribbon is provided. In various embodiments, the glass ribbon is traveling in a flow direction, and the glass ribbon comprises a first major surface, a second major surface opposite the first major surface, and a thickness defined by a distance between the first and second major surfaces. The scoring device can comprise: a first arm adapted to extend across the glass ribbon in proximity to the first major surface; a first slidable carriage coupled to the first arm, the first slidable carriage comprising a first scoring member adapted to pivot between a scoring position, where the first scoring member contacts the first major surface of the glass ribbon to create a score line as the first slidable carriage moves along the first arm, and a retracted position, where the first scoring member does not contact the first major surface of the glass ribbon; one or more actuators adapted to move the first slidable carriage along the first arm and to pivot the first scoring member between the scoring position and the retracted position; and a first nosing adapted to contact the second major surface of the glass ribbon at a first contact area, wherein the first contact area is aligned through the glass ribbon with a second contact area defined by where the first scoring member contacts the first major surface when in the scoring position, and wherein the first and second contact areas move in tandem as the first slidable carriage moves along the first arm.

[0005] In some embodiments, the first nosing comprises a cylindrical shape and is oriented to extend across the glass ribbon, wherein the first nosing comprises a primary surface and a secondary surface projecting from the primary surface, wherein the secondary surface extends helically along a longitudinal axis of the cylindrical first nosing; and wherein the first nosing is adapted to rotate about the longitudinal axis, whereby the secondary surface contacts the first contact area and the primary surface does not contact the second major surface of the glass ribbon.

[0006] In some embodiments, the first nosing comprises a fork and a wheel coupled to the fork; and the first nosing is adapted to move the wheel along the score line and contact the wheel to the first contact area as the wheel moves.

[0007] A method of manufacturing a glass sheet is provided. In various embodiments, the method comprises providing a glass ribbon having a first major surface, a second major surface opposite the first major surface, and a thickness defined by a distance between the first and second major surfaces, wherein the glass ribbon is traveling in a flow direction; and scoring the first major surface of the glass ribbon with a scoring device to provide a score line in the glass ribbon; wherein the scoring device comprises: a first arm adapted to extend across the glass ribbon in proximity to the first major surface, a first slidable carriage coupled to the first arm, the first slidable carriage comprising a first scoring member adapted to pivot between a scoring position, where the first scoring member contacts the first major surface of the glass ribbon to create a score line as the first slidable carriage moves along the first arm, and a retracted position, where the first scoring member does not contact the first major surface of the glass ribbon; one or more actuators adapted to move the first slidable carriage along the first arm and to pivot the first scoring member between the scoring position and the retracted position; and a first nosing adapted to contact the second major surface of the glass ribbon at a first contact area, wherein the first contact area is aligned through the glass ribbon with a second contact area defined by where the first scoring member contacts the first major surface when in the scoring position, and wherein the first and second contact areas move in tandem as the first slidable carriage moves along the first arm. [0008] In some embodiments, the scoring device further comprises a second arm adapted to extend across the glass ribbon in proximity to the first major surface, wherein the first and second arms are spaced apart from one another in a parallel orientation; a second slidable carriage coupled to the second arm, the second slidable carriage comprising a second scoring member adapted to pivot between a scoring position, where the second scoring member contacts the first major surface of the glass ribbon to create a score line as the second slidable carriage moves along the second arm, and a retracted position, where the second scoring member does not contact the first major surface of the glass ribbon; and a second nosing adapted to contact the second major surface of the glass ribbon at a third contact area, wherein the third contact area is aligned through the glass ribbon with a fourth contact area defined by where the second scoring member contacts the first major surface when in the scoring position and moving across the first major surface of the glass ribbon, and wherein the third and fourth contact areas move in tandem as the second slidable carriage moves along the second arm during the scoring step

[0009] In some embodiments, each of the first and second nosings comprises a cylindrical shape and is oriented to extend across the glass ribbon, each of the first and second nosings comprises a primary surface and a secondary surface projecting from the primary surface, the secondary surface extends helically along a longitudinal axis of the cylindrical first and second nosings; and each of the first and second nosings is adapted to rotate about the longitudinal axis, whereby the secondary surface contacts the first and third contact areas, respectively, and the primary surfaces do not contact the second major surface of the glass ribbon during the scoring step.

[0010] In some embodiments, each of the first and second nosings comprises a fork and a wheel coupled to the fork; and each of the first and second nosings is adapted to move the wheel along the score line and contact the wheel to the first and third contact areas, respectively, as the wheel moves.

[0011] Additional features and advantages of the embodiments disclosed herein will be set forth in the detailed description that follows, and in part will be clear to those skilled in the art from that description or recognized by practicing the embodiments described herein, including the detailed description which follows, the claims, as well as the appended drawings. [0012] Both the foregoing general description and the following detailed description present embodiments intended to provide an overview or framework for understanding the nature and character of the embodiments disclosed herein. The accompanying drawings are included to provide further understanding and are incorporated into and constitute a part of this specification. The drawings illustrate various embodiments of the disclosure, and together with the description explain the principles and operations thereof.

BRIEF DESCRIPTION OF THE DRAWINGS

[0013] FIG. l is a schematic view of a scoring device, in accordance with embodiments described herein;

[0014] FIG. 2 is a schematic view of a scoring device, in accordance with other embodiments described herein;

[0015] FIG. 3 is a front view of an arm and slidable carriages, in accordance with FIG. 1;

[0016] FIG. 4A is a cross-sectional view of an arm and slidable carriage, in accordance with FIG. 1;

[0017] FIG. 4B is a cross-sectional view through line Y — Y' line in FIG. 3;

[0018] FIG. 5 is an enlarged oblique side view of the nosing and scoring element, in accordance with FIG. 1;

[0019] FIG. 6 is an enlarged oblique view of a nosing and scoring element, in accordance with some embodiments described herein; and

[0020] FIG. 7 is an enlarged oblique view of a nosing and scoring element, in accordance with some embodiments described herein.

PET All ED DESCRIPTION

[0021] Reference will now be made in detail to embodiments of the present disclosure, examples of which are illustrated in the accompanying drawings. Whenever possible, the same reference numerals will be used throughout the drawings to refer to the same or like parts. However, this disclosure can be embodied in many different forms and should not be construed as limited to the embodiments set forth herein.

[0022] As used herein, the term “about” means that amounts, sizes, formulations, parameters, and other quantities and characteristics are not and need not be exact, but may be approximate and/or larger or smaller, as desired, reflecting tolerances, conversion factors, rounding off, measurement error and the like, and other factors known to those of skill in the art.

[0023] 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 to the other particular value. Similarly, when values are expressed as approximations 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.

[0024] Directional terms as used herein — for example, up, down, right, left, front, back, top, bottom — are made only with reference to the figures as drawn and are not intended to imply absolute orientation.

[0025] Unless otherwise expressly stated, it is in no way intended that any method set forth herein be construed as requiring that its steps be performed in a specific order, nor that with any apparatus, specific orientations be required. Accordingly, where a method claim does not actually recite an order to be followed by its steps, or that any apparatus claim does not actually recite an order or orientation to individual components, or it is not otherwise specifically stated in the claims or description that the steps are to be limited to a specific order, or that a specific order or orientation to components of an apparatus is not recited, it is in no way intended that an order or orientation be inferred in any respect. This holds for any possible non-express basis for interpretation, including: matters of logic with respect to arrangement of steps, operational flow, order of components, or orientation of components; plain meaning derived from grammatical organization or punctuation, and; the number or type of embodiments described in the specification.

[0026] 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 indicates otherwise.

[0027] The word “exemplary,” “example,” or various forms thereof are used herein to mean serving as an example, instance, or illustration. Any aspect or design described herein as “exemplary” or as an “example” should not be construed as preferred or advantageous over other aspects or designs. Furthermore, examples are provided solely for purposes of clarity and understanding and are not meant to limit or restrict the disclosed subject matter or relevant portions of this disclosure in any manner. It can be appreciated that a myriad of additional or alternate examples of varying scope could have been presented but have been omitted for purposes of brevity.

[0028] As used herein, the terms “comprising” and “including,” and variations thereof, shall be construed as synonymous and open-ended, unless otherwise indicated. A list of elements following the transitional phrases comprising or including is a non-exclusive list, such that elements in addition to those specifically recited in the list may also be present.

[0029] The terms “substantial,” “substantially,” and variations thereof as used herein are intended to note that a described feature is equal or approximately equal to a value or description. For example, a “substantially planar” surface is intended to denote a surface that is planar or approximately planar. Moreover, “substantially” is intended to denote that two values are equal or approximately equal. In some embodiments, “substantially” may denote values within about 10% of each other, such as within about 5% of each other, or within about 2% of each other.

[0030] In various embodiments, a scoring device for scoring a glass ribbon and a method of manufacturing a glass sheet from a glass ribbon are provided. The glass ribbon can be provided by any suitable glass-forming process. For example, in some embodiments, the glass forming process includes a down-draw, up-draw, float, fusion, slot draw, or press rolling process of preparing a glass ribbon. In various embodiments, the glass ribbon (G) comprises a first major surface (SI), a second major surface (S2) opposite the first major surface (SI), and a thickness (T) defined by a distance between the first and second major surfaces (SI, S2).

[0031] The glass-forming process and method of scoring the glass ribbon can be continuous or non-continuous. In some embodiments, the method is a continuous process. According to various embodiments described herein, the method results in a reduced sheet- to-sheet cycle time. In this context, sheet-to- sheet cycle time means the time between scoring and separating a first glass sheet from the glass ribbon and scoring and separating a second glass sheet from the glass ribbon. In some embodiments, the method described herein results in a significant decrease in the total process cycle time.

[0032] In some embodiments, as shown in FIGs. 1 and 5, the glass ribbon (G) is in a vertical orientation and traveling in a vertical flow direction. In such embodiments, the scoring device (2) comprises an arm (4) adapted to extend across the glass ribbon (G). The arm (4) is positioned to be in proximity to the first major surface (SI). In such embodiments, the device (2) further comprises a nosing (8) adapted to contact the second major surface (S2) of the glass ribbon (G). In some embodiments, the device (2) comprises a first slidable carriage (6a), which is coupled to the arm (4). In some embodiments, the scoring device comprises a plurality of slidable carriages. As shown in FIGs. 1 and 5, for example, the device (2) includes a second slidable carriage (6b) coupled to the arm (4).

[0033] In some embodiments, the first slidable carriage (6a) comprises a first scoring member (12a) adapted to move (e.g., pivot) between a scoring position (20a), where the first scoring member (12a) contacts the first major surface (SI) of the glass ribbon (G) to create a score line as the first slidable carriage (6a) moves along the arm (4), and a retracted position (20b), where the scoring member (12) does not contact the first major surface (SI) of the glass ribbon (G). In some embodiments, the second slidable carriage (6b) comprises a second scoring member (12b) adapted to move (e.g., pivot) between a scoring position (20a), where the second scoring member (12b) contacts the first major surface (SI) of the glass ribbon (G) to create the score line as the second slidable carriage (6b) moves along the arm (4), and a retracted position (20b), where the second scoring member (12b) does not contact the first major surface (SI) of the glass ribbon (G).

[0034] As shown in FIG. 5, for example, one of the two slidable carriages (6a, 6b) is in the scoring position (20a) and the other is in the retracted position (20b). When in the scoring position (20a), the scoring member (12a) is pivoted toward the glass ribbon (G) and contacts the glass at a second contact area (28b). In such embodiments, the first contact area (28a) is aligned through the glass ribbon (G) with the second contact area (28b). During the scoring process, the first and second contact areas (28a, 28b) move in tandem as the first slidable carriage (6a) moves along the first arm (4) and the nosing (8) rotates. [0035] In some embodiments, as shown in FIGs. 3, 4 A, and 4B, the first and second slidable carriages (6a, 6b) are adapted to move (e.g., reciprocate) along the arm (4) in opposing directions. In such embodiments, when one of the first and second scoring members (12a, 12b) is in the scoring position (20a) the other is in the retracted position (20b). In some embodiments, when one of the first and second slidable carriages (12a, 12b) moves along the arm (4) to create the score line in the glass ribbon (G), the other of the first and second slidable carriages (12a, 12b) moves to a position proximate to an edge of the glass ribbon (G) (e.g., an original position that the slidable carriage resets to before being actuated across the glass ribbon). In some embodiments, the score line created in the second contact area (28b) would be the same whether it is created by the first scoring element (12a) or the second scoring element (12b).

[0036] In various embodiments, the scoring device (2) comprises one or more actuators for controlling the moving components. In some embodiments, as shown in FIGs. 3 and 5, the device (2) comprises an actuator (18) for controlling the movement of the first slidable carriage (6a) and the second slidable carriage (6b) along the arm (4). In some embodiments, as shown in FIG. 5, the device (2) comprises an actuator (14) for controlling the movement (e.g., pivot) of the first and second scoring members (12a, 12b) between the scoring position (20a) and the retracted position (20b).

[0037] In some embodiments, the one or more actuators for controlling the movement of the slidable carriages (6a, 6b) along the arm (4) can be a belt-driven actuator, a screw- driven actuator, a servo-driven actuator, a pneumatic-driven actuator, or a chain. In some embodiments, the one or more actuators can be a hydraulic piston, pneumatic piston, or other actuator for controlling the movement of the scoring members (12a, 12b) between the scoring position (20a) and the retracted position (20b).

[0038] In some embodiments, the nosing (8) is a rotary nosing (8a). As shown in FIGs. 1, 2, 5, and 7, the rotary nosing (8, 8a) comprises a cylindrical shape that is oriented to extend across the glass ribbon (G). In such embodiments, the nosing (8, 8a) comprises a primary surface (10a) and a secondary surface (10b) projecting out from the primary surface (10a). In some embodiments, as shown in FIGs. 2, 5, and 7, the secondary surface (10b) extends helically along a longitudinal axis of the cylindrical first nosing (8, 8a). In such embodiments, the nosing (8) is adapted to rotate about its longitudinal axis, such that the secondary surface (10b) contacts the first contact area (28a) and the primary surface (10a) does not contact the second major surface (S2) of the glass ribbon (G). In such embodiments, as the glass ribbon (G) travels along the flow direction, the nosing (8) rotates such that the secondary surface (10b) is always in contact with the second major surface (S2) of the glass ribbon (G).

[0039] In some embodiments, the nosing (8) is adapted to rotate at a first rate (Rl), the glass ribbon (G) traveling in the flow direction moves at a second rate (R2), and the first and second rates are controlled and synchronized so the score line is substantially perpendicular to the flow direction of the glass ribbon.

[0040] In some embodiments, as shown in FIG. 2, the glass ribbon (G) is in a horizontal orientation and traveling in a horizontal flow direction. In such embodiments, the scoring device (2) can include a plurality of arms (4) and nosings (8). In FIG. 2, for example, the scoring device includes a first arm (4a) and a second arm (4b), and each arm is adapted to extend across the glass ribbon (G) in proximity to the first major surface (SI). In some embodiments, the first and second arms (4a, 4b) are spaced apart from one another and positioned in a parallel orientation.

[0041] In some embodiments, the first slidable carriage (6a) is coupled to the first arm (4a) and the second slidable carriage (6b) is coupled to the second arm (4b). The first slidable carriage (4a) includes a first scoring member (12a), and the second slidable carriage (4b) includes a second scoring member (12b). In such embodiments, each scoring member (12a, 12b) is adapted to move (e.g. pivot) between a scoring position (20a), where the scoring member contacts the first major surface (SI) of the glass ribbon (G) to create a score line as the slidable carriage (6a, 6b) moves along the arm (4a, 4b), and a retracted position (20b), where the scoring member (12a, 12b) does not contact the first major surface (SI) of the glass ribbon (G).

[0042] In some embodiments, the scoring device (2) can include a second nosing (8b) adapted to contact the second major surface (S2) of the glass ribbon (G) at a third contact area, wherein the third contact area is aligned through the glass ribbon with a fourth contact area defined by where the second scoring member (12b) contacts the first major surface (SI) when in the scoring position (20a) and moving across the first major surface (SI) of the glass ribbon (G), and wherein the third and fourth contact areas move in tandem as the second slidable carriage (6b) moves along the second arm (4b). In FIG 2, the second nosing (8b), third contact area, and fourth contact area are omitted for clarity. The third and fourth contact areas are analogous to the first and second contact areas (28a, 28b) shown in FIG. 5.

[0043] In some embodiments, the nosing is a roller nosing. For example, in some embodiments, the nosing(s) (8, 8a, 8b) comprises a fork (24) and a wheel (26) coupled to the fork (24). In such embodiments, the nosing is adapted to move the wheel (26) along the score line and contact the wheel (26) to the first contact area (28a) as the wheel moves. In FIG. 6, for example, the glass ribbon (G) is oriented horizontally and is provided to the scoring device (2) using a conveyor (30). In such embodiments, the scoring device (2) is configured to score the glass when the scoring element (12) contacts the first surface (SI) of the glass as the slidable carriage (6) moves across the first surface (SI) of the glass ribbon (G) and the nosing (8b) contacts the second surface (S2) of the glass.

[0044] In some embodiments, the scoring member(s) (12a, 12b) can be any suitable scoring device. For example, the scoring member can be a scoring wheel, a scoring tip, a laser, etc. In some embodiments, the scoring member is a scoring wheel comprising a poly crystalline diamond, carbide, or any other suitable glass cutting material. In some embodiments, the score line is substantially perpendicular to the flow direction of the glass ribbon.

[0045] In some embodiment, the one or more actuators controlling the scoring member can be used to adjust the pressure applied through the scoring member (12) to the first major surface (SI) of the glass ribbon (G). For example, if the scoring member (12) material wears down after a number of cycles, the pressure can be increased to compensate for the wear in order to maintain a constant score depth throughout a continuous process.

[0046] In some embodiments, the score depth (D) is less than the thickness (T) of the glass ribbon (G). For example, in some embodiments, the score depth (D) is in a range of about 1% to about 25% of the thickness (T) of the glass ribbon (G), or about 3% to about 15% of the thickness (T(. In some embodiments, the thickness (T) of the glass ribbon (G) is in a range of about 0.5 mm to about 2.0 mm, or about 1 mm to about 1.5 mm. The end points of all ranges are interchangeable and the ranges are inclusive of all subranges within.

[0047] In some embodiments, the nosing (8) and nosing wheel (26), as shown in FIGs. 6 and 7, can comprise any suitable material. In some embodiments, for example, the material is silicone or any other material suitable for high-temperature manufacturing conditions.

[0048] In various embodiments, a method of manufacturing a glass sheet from a glass ribbon (G) is disclosed. In some embodiments, the method comprises providing a glass ribbon (G) having a first major surface (SI), a second major surface (S2) opposite the first major surface (SI), and a thickness (T) defined by a distance between the first and second major surfaces (SI, S2). In some embodiments, the glass ribbon (G) is provided through a glass forming process such as down-draw, up-draw, float, fusion, slot draw, or press rolling.

In some embodiments, the glass ribbon (G) is continuously traveling in a flow direction. In various embodiments, the method comprises scoring the first major surface (SI) of the glass ribbon (G) with a scoring device (2) to provide a score line (L) in the glass ribbon (G). The scoring device (2) can be one of the various embodiments disclosed herein.

[0049] In some embodiments, the method comprises providing the glass ribbon (G) in a vertical orientation. In some embodiments, the method comprises providing the glass ribbon (G) in a horizontal orientation.

[0050] In some embodiments, the method comprises one or more additional steps. For example, in some embodiments, the method further comprises separating the glass sheet from the glass ribbon (G) at the score line (L). In some embodiments, the method comprises moving the glass sheet from the scoring device (2) to another location. In some embodiments, the method comprises a cleaning, polishing, or additional scoring step.

[0051] It will be apparent to those skilled in the art that various modifications and variations can be made to embodiments of the present disclosure without departing from the spirit and scope of the disclosure. Thus, it is intended that the present disclosure cover such modifications and variations provided they come within the scope of the appended claims and their equivalents.

Claims

CLAIMS What is claimed is:

1. A scoring device for manufacturing a glass sheet from a glass ribbon traveling in a flow direction, wherein the glass ribbon comprises a first major surface, a second major surface opposite the first major surface, and a thickness defined by a distance between the first and second major surfaces, the scoring device comprising: a first arm adapted to extend across the glass ribbon in proximity to the first major surface; a first slidable carriage coupled to the first arm, the first slidable carriage comprising a first scoring member adapted to pivot between a scoring position, where the first scoring member contacts the first major surface of the glass ribbon to create a score line as the first slidable carriage moves along the first arm, and a retracted position, where the first scoring member does not contact the first major surface of the glass ribbon; one or more actuators adapted to move the first slidable carriage along the first arm and to pivot the first scoring member between the scoring position and the retracted position; and a first nosing adapted to contact the second major surface of the glass ribbon at a first contact area, wherein the first contact area is aligned through the glass ribbon with a second contact area defined by where the first scoring member contacts the first major surface when in the scoring position, and wherein the first and second contact areas move in tandem as the first slidable carriage moves along the first arm.

2. The scoring device of claim 1, further comprising a second slidable carriage coupled to the first arm, the second slidable carriage comprising a second scoring member adapted to pivot between a scoring position, where the second scoring member contacts the first major surface of the glass ribbon to create the score line as the second slidable carriage moves along the first arm, and a retracted position, where the second scoring member does not contact the first major surface of the glass ribbon; wherein the one or more actuators is adapted to move the second slidable carriage along the first arm and to pivot the second scoring member between the scoring position and the retracted position; and wherein the first and second slidable carriages are adapted to reciprocate along the first arm in opposing directions, whereby: when one of the first and second scoring members is in the scoring position the other is in the retracted position, when one of the first and second slidable carriages moves along the first arm to create the score line in the glass ribbon, the other of the first and second slidable carriages resets to a position proximate to an edge of the glass ribbon, and the score line created in the second contact area is the same whether it is created by the first scoring element or the second scoring element.

3. The scoring device of claim 1, wherein the first nosing comprises a cylindrical shape and is oriented to extend across the glass ribbon, wherein the first nosing comprises a primary surface and a secondary surface projecting from the primary surface, wherein the secondary surface extends helically along a longitudinal axis of the cylindrical first nosing; and wherein the first nosing is adapted to rotate about the longitudinal axis, whereby the secondary surface contacts the first contact area and the primary surface does not contact the second major surface of the glass ribbon.

4. The scoring device of claim 3, wherein the first nosing is adapted to rotate at a first rate, the glass ribbon traveling in the flow direction moves at a second rate, and the first and second rates are synchronized so the score line is substantially perpendicular to the flow direction of the glass ribbon.

5. The scoring device of claim 1, wherein the first nosing comprises a fork and a wheel coupled to the fork; and wherein the first nosing is adapted to move the wheel along the score line and contact the wheel to the first contact area as the wheel moves.

6. The scoring device of claim 1, further comprising: a second arm adapted to extend across the glass ribbon in proximity to the first major surface, wherein the first and second arms are spaced apart from one another in a parallel orientation; a second slidable carriage coupled to the second arm, the second slidable carriage comprising a second scoring member adapted to pivot between a scoring position, where the second scoring member contacts the first major surface of the glass ribbon to create a score line as the second slidable carriage moves along the second arm, and a retracted position, where the second scoring member does not contact the first major surface of the glass ribbon; and a second nosing adapted to contact the second major surface of the glass ribbon at a third contact area, wherein the third contact area is aligned through the glass ribbon with a fourth contact area defined by where the second scoring member contacts the first major surface when in the scoring position and moving across the first major surface of the glass ribbon, and wherein the third and fourth contact areas move in tandem as the second slidable carriage moves along the second arm.

7. The scoring device of claim 6, wherein each of the first and second nosings comprises a cylindrical shape and is oriented to extend across the glass ribbon, wherein each of the first and second nosings comprises a primary surface and a secondary surface projecting from the primary surface, wherein the secondary surface extends helically along a longitudinal axis of the cylindrical first and second nosings; and wherein each of the first and second nosings is adapted to rotate about the longitudinal axis, whereby the secondary surface contacts the third contact area and the primary surface does not contact the second major surface of the glass ribbon.

8. The scoring device of claim 6, wherein each of the first and second nosings comprises a fork and a wheel coupled to the fork; and wherein each of the first and second nosings is adapted to move the wheel along the score line and contact the wheel to the first and third contact areas, respectively, as the wheel moves.

9. The scoring device of claim 1, wherein the one or more actuators are selected from a belt-driven actuator, a screw-driven actuator, a servo-driven actuator, a pneumatic- driven actuator, or a chain.

10. The scoring device of claim 1, wherein the score line is substantially perpendicular to the flow direction of the glass ribbon.

11. A method of manufacturing a glass sheet, comprising: providing a glass ribbon having a first major surface, a second major surface opposite the first major surface, and a thickness defined by a distance between the first and second major surfaces, wherein the glass ribbon is traveling in a flow direction; and scoring the first major surface of the glass ribbon with a scoring device to provide a score line in the glass ribbon; wherein the scoring device comprises: a first arm adapted to extend across the glass ribbon in proximity to the first major surface, a first slidable carriage coupled to the first arm, the first slidable carriage comprising a first scoring member adapted to pivot between a scoring position, where the first scoring member contacts the first major surface of the glass ribbon to create a score line as the first slidable carriage moves along the first arm, and a retracted position, where the first scoring member does not contact the first major surface of the glass ribbon; one or more actuators adapted to move the first slidable carriage along the first arm and to pivot the first scoring member between the scoring position and the retracted position; and a first nosing adapted to contact the second major surface of the glass ribbon at a first contact area, wherein the first contact area is aligned through the glass ribbon with a second contact area defined by where the first scoring member contacts the first major surface when in the scoring position, and wherein the first and second contact areas move in tandem as the first slidable carriage moves along the first arm.

12. The method of claim 11, wherein the providing the glass ribbon step comprises orienting the glass ribbon in a vertical orientation.

13. The method of claim 12, wherein the scoring device further comprises a second slidable carriage coupled to the first arm, the second slidable carriage comprising a second scoring member adapted to pivot between a scoring position, where the second scoring member contacts the first major surface of the glass ribbon to create the score line as the second slidable carriage moves along the first arm, and a retracted position, where the second scoring member does not contact the first major surface of the glass ribbon; wherein the one or more actuators is adapted to move the second slidable carriage along the first arm and to pivot the second scoring member between the scoring position and the retracted position; and wherein the first and second slidable carriages are adapted to reciprocate along the first arm in opposing directions, whereby: when one of the first and second scoring members is in the scoring position the other is in the retracted position, when one of the first and second slidable carriages moves along the first arm to create the score line in the glass ribbon, the other slidable carriage resets to a position proximate to an edge of the glass ribbon, and the score line created in the second contact area is the same whether it is created by the first scoring element or the second scoring element.

14. The method of claim 12, wherein the first nosing comprises a cylindrical shape and is oriented to extend across the glass ribbon, wherein the first nosing comprises a primary surface and a secondary surface projecting from the primary surface, wherein the secondary surface extends helically along a longitudinal axis of the cylindrical first nosing; and wherein the first nosing is adapted to rotate about the longitudinal axis, whereby the secondary surface contacts the first contact area and the primary surface does not contact the second major surface of the glass ribbon during the scoring step.

15. The method of claim 14, wherein the first nosing rotates at a first rate, the glass ribbon travels in the flow direction at a second rate, and the first and second rates are synchronized so the score line is created substantially perpendicular to the flow direction of the glass ribbon.

16. The method of claim 11, wherein the providing the glass ribbon step comprises a conveyor for maintaining the glass ribbon in a horizontal orientation.

17. The method of claim 16, wherein the scoring device further comprises: a second arm adapted to extend across the glass ribbon in proximity to the first major surface, wherein the first and second arms are spaced apart from one another in a parallel orientation; a second slidable carriage coupled to the second arm, the second slidable carriage comprising a second scoring member adapted to pivot between a scoring position, where the second scoring member contacts the first major surface of the glass ribbon to create a score line as the second slidable carriage moves along the second arm, and a retracted position, where the second scoring member does not contact the first major surface of the glass ribbon; and a second nosing adapted to contact the second major surface of the glass ribbon at a third contact area, wherein the third contact area is aligned through the glass ribbon with a fourth contact area defined by where the second scoring member contacts the first major surface when in the scoring position and moving across the first major surface of the glass ribbon, and wherein the third and fourth contact areas move in tandem as the second slidable carriage moves along the second arm during the scoring step.

18. The method of claim 17, wherein each of the first and second nosings comprises a cylindrical shape and is oriented to extend across the glass ribbon, wherein each of the first and second nosings comprises a primary surface and a secondary surface projecting from the primary surface, wherein the secondary surface extends helically along a longitudinal axis of the cylindrical first and second nosings; and wherein each of the first and second nosings is adapted to rotate about the longitudinal axis, whereby the secondary surface contacts the first and third contact areas, respectively, and the primary surfaces do not contact the second major surface of the glass ribbon during the scoring step.

19. The method of claim 17, wherein each of the first and second nosings comprises a fork and a wheel coupled to the fork; and wherein each of the first and second nosings is adapted to move the wheel along the score line and contact the wheel to the first and third contact areas, respectively, as the wheel moves.

20. The method of claim 11, wherein the score line comprises a score depth that is less than the thickness of the glass ribbon.

21. The method of claim 11, wherein the one or more actuators are selected from a belt-driven actuator, a screw-driven actuator, a servo-driven actuator, a pneumatic-driven actuator, or a chain.

22. The method of claim 11, wherein the providing the glass ribbon step comprises a glass forming process selected from down-draw, up-draw, float, fusion, slot draw, or press rolling.

23. The method of claim 11, further comprising separating the glass sheet from the glass ribbon at the score line.

24. The method of claim 11, wherein the score line provided is substantially perpendicular to the flow direction of the glass ribbon.