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WO2012030621A1 - Appareil et procédé de rayage de feuille de verre - Google Patents

Appareil et procédé de rayage de feuille de verre Download PDF

Info

Publication number
WO2012030621A1
WO2012030621A1 PCT/US2011/049128 US2011049128W WO2012030621A1 WO 2012030621 A1 WO2012030621 A1 WO 2012030621A1 US 2011049128 W US2011049128 W US 2011049128W WO 2012030621 A1 WO2012030621 A1 WO 2012030621A1
Authority
WO
WIPO (PCT)
Prior art keywords
wheel
glass
anvil
score
actuator
Prior art date
Application number
PCT/US2011/049128
Other languages
English (en)
Inventor
Scott W Deming
William W Johnson
Original Assignee
Corning Incorporated
Priority date (The priority date is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the date listed.)
Filing date
Publication date
Application filed by Corning Incorporated filed Critical Corning Incorporated
Priority to JP2013527129A priority Critical patent/JP5856171B2/ja
Priority to CN2011800414088A priority patent/CN103068756A/zh
Priority to KR1020137007818A priority patent/KR101667448B1/ko
Publication of WO2012030621A1 publication Critical patent/WO2012030621A1/fr

Links

Classifications

    • C—CHEMISTRY; METALLURGY
    • C03—GLASS; MINERAL OR SLAG WOOL
    • C03B—MANUFACTURE, SHAPING, OR SUPPLEMENTARY PROCESSES
    • C03B33/00—Severing cooled glass
    • C03B33/02—Cutting or splitting sheet glass or ribbons; Apparatus or machines therefor
    • C03B33/0215—Cutting or splitting sheet glass or ribbons; Apparatus or machines therefor the ribbon being in a substantially vertical plane
    • C—CHEMISTRY; METALLURGY
    • C03—GLASS; MINERAL OR SLAG WOOL
    • C03B—MANUFACTURE, SHAPING, OR SUPPLEMENTARY PROCESSES
    • C03B33/00—Severing cooled glass
    • C03B33/02—Cutting or splitting sheet glass or ribbons; Apparatus or machines therefor
    • C—CHEMISTRY; METALLURGY
    • C03—GLASS; MINERAL OR SLAG WOOL
    • C03B—MANUFACTURE, SHAPING, OR SUPPLEMENTARY PROCESSES
    • C03B17/00—Forming molten glass by flowing-out, pushing-out, extruding or drawing downwardly or laterally from forming slits or by overflowing over lips
    • C03B17/06—Forming glass sheets
    • C—CHEMISTRY; METALLURGY
    • C03—GLASS; MINERAL OR SLAG WOOL
    • C03B—MANUFACTURE, SHAPING, OR SUPPLEMENTARY PROCESSES
    • C03B33/00—Severing cooled glass
    • C03B33/10—Glass-cutting tools, e.g. scoring tools

Definitions

  • the present invention relates to an apparatus and method for scoring glass sheets and, more particularly, glass sheets suitable for use in flat panel display devices.
  • FIG. 7 shows a flat anvil configuration.
  • the glass 104 is being drawn in direction 106, the down-draw direction.
  • the cross draw direction extends perpendicular to the plane of the page.
  • the anvil 120 is a straight bar, extending into the page, then the glass potentially is flattened along both the cross-draw and down-draw directions as the score wheel 140 is pressed against the glass 104 to make a score line.
  • the score wheel is moved along the glass in the cross draw direction, it rotates about axis 142 in direction 144.
  • the score wheel 140 would still flatten the glass in the down-draw direction as it presses the glass 140 against the anvil.
  • the glass 104 is contoured in the down draw direction so that although it contacts the anvil 120 at the bottom thereof, it bends away from the anvil as it extends in the up draw direction.
  • the score wheel 140 would also flatten the glass 104 in the cross-draw direction when the shape of the glass 104 deviates from the arc-shaped curve of the anvil. That is, the curved anvil still cannot follow waviness of the glass 104 when the waviness has a different radius of curvature than the arc shape of the anvil.
  • the present disclosure is directed to a scoring apparatuses and methods that improve the glass scoring process by reducing stresses placed on the glass during scoring.
  • the anvil described herein is a moving wheel anvil.
  • the wheel anvil may be positioned by proximity sensing and control, which allows the scoring process to follow the out-of-plane contours of the glass. Having the scoring process and equipment follow the contours of the glass prevents stress to the glass that would occur if the glass is forced to the contours of a fixed shape. Thus, stress to the glass created during scoring is reduced.
  • a scoring apparatus comprising: a housing;
  • a range finder coupled to the housing.
  • the apparatus of aspect 1 further comprising an actuator coupled between the housing and the wheel-anvil, wherein the actuator moves the wheel-anvil to a position based on signals from the range finder.
  • the apparatus of aspect 2 wherein the actuator is a voice coil or servo-motor.
  • the apparatus of any one of aspects 1-5 wherein the wheel-anvil has one of a spherical, ellipsoidal, flattened-spherical, or flattened-ellipsoidal, shape.
  • the apparatus of any one of aspects 1-5 wherein the wheel-anvil has a cylindrical shape.
  • the apparatus of any one of aspects 1-7 further comprising a second wheel anvil coupled to the housing.
  • a method of scoring glass comprising:
  • the method of aspect 9 further comprising: during the moving so as to produce a score line, determining a second position of the glass relative to the wheel anvil and moving the wheel anvil in accordance therewith so as to maintain contact between the wheel anvil and the glass.
  • the method of aspect 9 or aspect 10 wherein the wheel-anvil has one of a spherical, ellipsoidal, flattened-spherical, or flattened-ellipsoidal, shape.
  • FIG. 1 is a schematic view of a scoring apparatus according to a first embodiment, as seen in the down draw direction.
  • FIG. 3 is a schematic view of an ellipsoidal wheel anvil and scoring wheel as seen in the cross draw direction.
  • FIG. 4 is a schematic view of an ellipsoidal wheel anvil having a flattened equatorial portion.
  • FIG. 6 is a schematic view of equipment for forming glass.
  • FIG. 7 is a schematic view of a flat anvil according to the related art.
  • a wheel anvil can be used to score a glass sheet without undesirably flattening the glass, which produces unwanted stress in the glass.
  • the wheel anvil can follow any waviness contour, without having to know the contour beforehand.
  • the length-scale of the contour that the wheel anvil can follow is related to the size, shape, and radius of curvature of the wheel anvil.
  • the wheel anvil can follow out-of- plane contours in the width (or cross draw) direction of the glass, but the wheel anvil also is capable of allowing out-of-plane contours in the glass-flow (or down draw) direction— without flattening the glass— because of its narrow contact area with the glass.
  • the narrow contact area reduces the amount of the anvil surface that presses the glass flat and, thus, reduces stresses in the glass during scoring.
  • FIG. 1 schematically shows a scoring apparatus 2, as viewed in a down-draw direction, according to one embodiment.
  • the glass 4 as shown in FIG. 1 is being drawn in a direction into the page.
  • the scoring apparatus 2 may be coupled to the equipment for forming the glass 4, or any other suitable structure so that it may move relative to the glass 4 in a direction 37 and direction 57 opposite thereto.
  • the scoring apparatus 2 may be mounted to a traveling anvil machine (TAM, see 205 in FIG. 6) as used at the bottom of a glass ribbon drawing machine (See 200 in FIG. 6), to separate sheets of glass from the ribbon, as would be understood by one of skill in the art.
  • TAM traveling anvil machine
  • Housing 20 provides a mounting place for wheel anvil 22, an actuator 26, and a range finder 28.
  • the wheel anvil 22 is mounted to a shaft 24 by a rotation axis 25.
  • the shaft 24 is coupled to the housing 20 for movement in the direction of arrow 35 toward and away from the glass 4.
  • the actuator 26 is coupled to the shaft 24, as shown schematically by arrow 33, so as to move the shaft 24 in the direction of arrow 35.
  • the actuator 26 may be a voice coil, or a servo motor, for example.
  • the actuator receives a signal from the range finder 28, via path 31, and then moves the shaft 24 in the direction of arrow 35 based on the signal received.
  • the actuator 26 can position the shaft 24, and thus the periphery of the wheel anvil 22, to a defined position that coincides with the surface of the glass 4 so as to support the glass 4 against a force from the score wheel 42 during a scoring operation.
  • the actuator 26 can move the wheel anvil 22 to a position away from the expected plane of the glass 4, and move in a direction of arrow 57.
  • the scoring operation may be performed in a reverse direction for the next score line. That is, one score operation may be performed with the score wheel 42 and anvil 22 in contact with the glass 4 as the housings 20 and 40 move in concert in the direction of arrow 37, and another wherein the housings 20 and 40 then move in the direction of arrow 57.
  • range finders having a resolution on the order of microns are available.
  • One or more additional range finders could monitor the distance just before and just after the anvil wheel-sheet contact point to help the actuator 26 anticipate how to accurately translate the wheel anvil 22.
  • having range finders on opposite sides (in the direction of arrows 37, 57) of the housing 20 would facilitate producing score lines with either direction of movement of the scoring apparatus 2.
  • the second housing 40 provides a mount for the score wheel 42 and an actuator 46.
  • the score wheel 42 is mounted to a shaft 44 by a rotation axis 45.
  • the shaft 44 is coupled to the second housing 40 for movement in a direction along arrow 55 toward and away from the glass 4.
  • the actuator 46 is coupled to the shaft 44, as shown schematically by arrow 53, so as to move the shaft 44 in the direction of arrow 55.
  • the actuator 46 may be a voice coil, a servo motor, or a constant force actuator for example.
  • the actuator 46 may be configured to push the shaft 44, and thus the score wheel 42, toward the glass 4 so as to achieve a constant force as resisted by the glass 4 supported by the wheel anvil 22.
  • a suitable constant force actuator is available from Keyence, and also from SMAC of Carlsbad, CA.
  • the amount of force may be suitably chosen so as to produce an appropriate score line in the glass. The amount of force will depend upon one or more of the thickness and hardness of the glass 4, the configuration of the score wheel 42, and the desired depth of the score line.
  • the score wheel 42 will follow along to maintain contact with the glass 4.
  • the wheel anvil 22 and score wheel 42 follow the waviness of the glass 4, instead of flattening the glass 4 which introduces undesired stresses in the glass 4.
  • the wheel anvil 22 may be made out of, and/or covered with, rubber, silicone, or
  • the wheel anvil 22 may have various configurations as shown in FIGS. 2-4.
  • the glass 4 is shown as moving in a down-draw direction 6, wherein the cross-draw direction, i.e., width of the glass 4 ribbon perpendicular to the direction of draw, extends perpendicular to the plane of the paper.
  • the wheel anvil 22 is cylindrically shaped.
  • the wheel anvil 22 rotates in direction 39 about its longitudinal axis that coincides with the axis of rotation 25 as the housing 20 moves in the cross draw direction with the wheel anvil in contact with the glass 4.
  • This cylindrical wheel anvil 22 will follow the out-of-plane contours in the width direction of the glass 4, i.e., the cross-draw direction.
  • the radius of the cylindrical wheel anvil 22 will determine the length-scale, or radius -of-curvature, of waviness contours it can follow. There is a trade-off between the detailed waviness that the wheel anvil 22 can follow, and practical considerations, such as the precision of synchronization between the scoring wheel 42 and the wheel anvil 22.
  • FIG. 4 shows an ellipsoid with a flattened equatorial portion 23.
  • the equator could be flattened parallel to its axis of rotation 25 as shown, or the equator can be reshaped with a larger radius of curvature. This will expand the "target" for score wheel/glass/wheel anvil contact.
  • the range finder 28 sends a beam 30 toward the glass 4 to find the position of the glass 4 relative to the range finder 28.
  • Actuator 26 receives a signal, indicative of the relative position of the glass 4, via path 31 from the range finder 28, and drives the shaft 24 so as to place the periphery of the wheel anvil 22 in that position supporting the glass 4.
  • the actuator 46 drives the shaft 44 with a predetermined force so that the score wheel 42 contacts the glass.
  • the housings 20 and 40 When both the wheel anvil 22 and the score wheel 42 are in contact with the glass 4, the housings 20 and 40 will then move together in the cross draw direction either in the direction of arrow 37 or in the direction of arrow 57. As the housings 20, 40 move in the direction of arrow 37, the wheel anvil 22 will rotate in the direction of arrow 39, and the score wheel will rotate in the direction of arrow 59 (see FIGS. 2-4, for example), due to frictional engagement with the glass 4. During movement of the housings 20, 40, as the scoring operation continues, the actuator 26 continues to receive positional information from the range finder 28.
  • FIG. 5 Another embodiment of scoring apparatus 2 is shown in FIG. 5 which, similarly to FIG. 1, schematically shows the scoring apparatus 2 as viewed in a down-draw direction. That is, the glass 4 as shown in FIG. 5 is being drawn in a direction into the page.
  • the scoring apparatus 2 includes a housing 20 mounting a wheel anvil 22 on one side of the glass 4, and a second housing 40 mounting a score wheel 42 on the opposite side of the glass 4.
  • the configuration and operation of the second embodiment are similar to that described above in connection with the first embodiment, wherein like elements are shown with like reference numerals, and mainly the differences from the first embodiment will be explained.
  • FIG. 5 shows glass 4 as having an out of plane contour in the cross-draw direction.
  • the second embodiment includes two wheel anvils 22 coupled to shaft 24.
  • the two wheel anvils 22 may be idler rollers and covered with a silicone material to prevent damage to the glass 4.
  • alignment in the cross draw direction of the score wheel 42 with the support for the glass is less critical because an enlarged support area is provided between the two tangents of the wheel anvils 22 where they meet the glass 4.
  • the support area may be decreased by staggering and/or overlapping the wheel anvils 22 if so desired.
  • the operation of the second embodiment is substantially the same as that set forth with respect to the first.
  • the glass 4 is shown as being generally planar in the cross- draw direction in FIG.1 , instead it may have a cross-draw contour as shown in FIG. 5.
  • the glass 4 is shown in FIG. 5 as having a contour in the cross-draw direction, instead it may be generally planar as shown in FIG.1. In any of the preceding cases, the glass 4 may have a contour in the down-draw direction, or may be relatively planar.

Landscapes

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

Abstract

La présente invention porte sur des appareils et sur des procédés de rayage qui améliorent un processus de rayage de verre en réduisant les contraintes appliquées au verre pendant le rayage. Un appareil de rayage (2) comprend : un boîtier (20) auquel est couplée une enclume à roue (22), un actionneur (26) et un télémètre (28) ; un boîtier (40) auquel est couplée une roue de rayage (42) et un actionneur (46). L'actionneur (26) entraîne une périphérie de l'enclume à roue (22) vers une position, sur la base de signaux provenant du télémètre (28), afin de porter le verre (4) pendant le rayage. L'actionneur (46) entraîne la route de rayage (42) de façon à obtenir une force constante contre le verre. Par conséquent, l'enclume à roue (22) et la roue de rayage (42) peuvent suivre un contour hors du plan du verre (4) tout en restant en contact avec celui-ci.
PCT/US2011/049128 2010-08-30 2011-08-25 Appareil et procédé de rayage de feuille de verre WO2012030621A1 (fr)

Priority Applications (3)

Application Number Priority Date Filing Date Title
JP2013527129A JP5856171B2 (ja) 2010-08-30 2011-08-25 ガラスシート罫書き装置および方法
CN2011800414088A CN103068756A (zh) 2010-08-30 2011-08-25 玻璃板刻划装置和方法
KR1020137007818A KR101667448B1 (ko) 2010-08-30 2011-08-25 유리 시트 스코어링 장치 및 방법

Applications Claiming Priority (2)

Application Number Priority Date Filing Date Title
US37813710P 2010-08-30 2010-08-30
US61/378,137 2010-08-30

Publications (1)

Publication Number Publication Date
WO2012030621A1 true WO2012030621A1 (fr) 2012-03-08

Family

ID=44584669

Family Applications (1)

Application Number Title Priority Date Filing Date
PCT/US2011/049128 WO2012030621A1 (fr) 2010-08-30 2011-08-25 Appareil et procédé de rayage de feuille de verre

Country Status (5)

Country Link
JP (1) JP5856171B2 (fr)
KR (1) KR101667448B1 (fr)
CN (1) CN103068756A (fr)
TW (1) TWI518042B (fr)
WO (1) WO2012030621A1 (fr)

Cited By (3)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
JP2013144635A (ja) * 2011-12-15 2013-07-25 Amagasaki Kosakusho:Kk 倣い制御を備えた硬質脆性板のスクライブライン形成装置及びその形成方法
WO2014088985A1 (fr) * 2012-12-07 2014-06-12 Corning Incorporated Dispositif et procédé d'aplatissement de feuilles de verre
CN106045292A (zh) * 2015-04-15 2016-10-26 塔工程有限公司 划线设备

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* Cited by examiner, † Cited by third party
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JP6598347B2 (ja) * 2014-12-29 2019-10-30 ＡｖａｎＳｔｒａｔｅ株式会社 ガラス基板の製造方法
GB2551184B (en) * 2016-06-09 2019-10-16 Aston Martin Lagonda Ltd A device for perforating panels of material
JP6798289B2 (ja) * 2016-12-02 2020-12-09 日本電気硝子株式会社 板ガラスの製造方法
GB201820560D0 (en) 2018-12-17 2019-01-30 Aston Martin Lagonda Ltd Assemblies for engines
KR102589334B1 (ko) * 2021-10-12 2023-10-16 (주)하나기술 절단성이 개선된 초박막 유리 절단 장치 및 이를 이용한 절단 방법

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US4018372A (en) * 1975-12-05 1977-04-19 The Fletcher-Terry Company Glass cutting method and apparatus
WO2008005250A1 (fr) * 2006-06-30 2008-01-10 Corning Incorporated Procédés et appareil permettant de réduire les variations de contrainte dans les feuilles de verre produites à partir d'un ruban de verre
US20080276785A1 (en) * 2007-05-09 2008-11-13 Mohamed Dahroug Constant force scoring device and method for using same

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JP2002316829A (ja) * 2001-04-17 2002-10-31 Seiko Epson Corp ガラス基板の切断方法、電気光学装置の製造方法、電気光学装置、電子機器、およびスクライブ溝形成装置
JP2004026539A (ja) * 2002-06-24 2004-01-29 Nakamura Tome Precision Ind Co Ltd ガラス基板の割断加工方法及びその装置
US20070039990A1 (en) * 2005-05-06 2007-02-22 Kemmerer Marvin W Impact induced crack propagation in a brittle material
KR101442894B1 (ko) * 2008-07-14 2014-09-22 아사히 가라스 가부시키가이샤 유리 리본의 분할 절단선 가공 장치 및 유리 리본의 분할 절단선 가공 방법
US20110126593A1 (en) * 2009-11-30 2011-06-02 Rashid Abdul-Rahman Apparatus and method for separating a glass sheet
US8146385B2 (en) * 2010-04-29 2012-04-03 Corning Incorporated Methods for separating glass sheets from continuous glass ribbons
JP5782507B2 (ja) * 2010-05-20 2015-09-24 コーニング インコーポレイテッド フュージョンドロー法のリボンポジション制御方式

Patent Citations (3)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US4018372A (en) * 1975-12-05 1977-04-19 The Fletcher-Terry Company Glass cutting method and apparatus
WO2008005250A1 (fr) * 2006-06-30 2008-01-10 Corning Incorporated Procédés et appareil permettant de réduire les variations de contrainte dans les feuilles de verre produites à partir d'un ruban de verre
US20080276785A1 (en) * 2007-05-09 2008-11-13 Mohamed Dahroug Constant force scoring device and method for using same

Cited By (4)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
JP2013144635A (ja) * 2011-12-15 2013-07-25 Amagasaki Kosakusho:Kk 倣い制御を備えた硬質脆性板のスクライブライン形成装置及びその形成方法
WO2014088985A1 (fr) * 2012-12-07 2014-06-12 Corning Incorporated Dispositif et procédé d'aplatissement de feuilles de verre
CN105073661A (zh) * 2012-12-07 2015-11-18 康宁股份有限公司 用于整平玻璃板的装置和整平玻璃板的方法
CN106045292A (zh) * 2015-04-15 2016-10-26 塔工程有限公司 划线设备

Also Published As

Publication number Publication date
JP5856171B2 (ja) 2016-02-09
TW201213254A (en) 2012-04-01
KR20130102568A (ko) 2013-09-17
CN103068756A (zh) 2013-04-24
TWI518042B (zh) 2016-01-21
JP2013540680A (ja) 2013-11-07
KR101667448B1 (ko) 2016-10-18

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